Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 16 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 17 | #include "thread.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 18 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 19 | #include <pthread.h> |
Elliott Hughes | 2acf36d | 2012-04-17 13:30:13 -0700 | [diff] [blame] | 20 | #include <signal.h> |
Brian Carlstrom | dbf05b7 | 2011-12-15 00:55:24 -0800 | [diff] [blame] | 21 | #include <sys/resource.h> |
| 22 | #include <sys/time.h> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 23 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 24 | #include <algorithm> |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 25 | #include <bitset> |
Elliott Hughes | eb4f614 | 2011-07-15 17:43:51 -0700 | [diff] [blame] | 26 | #include <cerrno> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 27 | #include <iostream> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 28 | #include <list> |
Ian Rogers | c7dd295 | 2014-10-21 23:31:19 -0700 | [diff] [blame] | 29 | #include <sstream> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 30 | |
Ian Rogers | 166db04 | 2013-07-26 12:05:57 -0700 | [diff] [blame] | 31 | #include "arch/context.h" |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 32 | #include "art_field-inl.h" |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 33 | #include "art_method-inl.h" |
Vladimir Marko | 80afd02 | 2015-05-19 18:08:00 +0100 | [diff] [blame] | 34 | #include "base/bit_utils.h" |
Evgenii Stepanov | 1e13374 | 2015-05-20 12:30:59 -0700 | [diff] [blame] | 35 | #include "base/memory_tool.h" |
Elliott Hughes | 76b6167 | 2012-12-12 17:47:30 -0800 | [diff] [blame] | 36 | #include "base/mutex.h" |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 37 | #include "base/timing_logger.h" |
Ian Rogers | c7dd295 | 2014-10-21 23:31:19 -0700 | [diff] [blame] | 38 | #include "base/to_str.h" |
Mathieu Chartier | dabdc0f | 2016-03-04 14:58:03 -0800 | [diff] [blame^] | 39 | #include "base/systrace.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 40 | #include "class_linker-inl.h" |
Elliott Hughes | 46e251b | 2012-05-22 15:10:45 -0700 | [diff] [blame] | 41 | #include "debugger.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 42 | #include "dex_file-inl.h" |
Ian Rogers | 7655f29 | 2013-07-29 11:07:13 -0700 | [diff] [blame] | 43 | #include "entrypoints/entrypoint_utils.h" |
Mathieu Chartier | d889178 | 2014-03-02 13:28:37 -0800 | [diff] [blame] | 44 | #include "entrypoints/quick/quick_alloc_entrypoints.h" |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 45 | #include "gc_map.h" |
Ian Rogers | 1d54e73 | 2013-05-02 21:10:01 -0700 | [diff] [blame] | 46 | #include "gc/accounting/card_table-inl.h" |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 47 | #include "gc/allocator/rosalloc.h" |
Ian Rogers | 1d54e73 | 2013-05-02 21:10:01 -0700 | [diff] [blame] | 48 | #include "gc/heap.h" |
| 49 | #include "gc/space/space.h" |
Ian Rogers | 22d5e73 | 2014-07-15 22:23:51 -0700 | [diff] [blame] | 50 | #include "handle_scope-inl.h" |
Mathieu Chartier | c56057e | 2014-05-04 13:18:58 -0700 | [diff] [blame] | 51 | #include "indirect_reference_table-inl.h" |
Elliott Hughes | c5f7c91 | 2011-08-18 14:00:42 -0700 | [diff] [blame] | 52 | #include "jni_internal.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 53 | #include "mirror/class_loader.h" |
Ian Rogers | 22d5e73 | 2014-07-15 22:23:51 -0700 | [diff] [blame] | 54 | #include "mirror/class-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 55 | #include "mirror/object_array-inl.h" |
| 56 | #include "mirror/stack_trace_element.h" |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 57 | #include "monitor.h" |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 58 | #include "oat_quick_method_header.h" |
Ian Rogers | 22d5e73 | 2014-07-15 22:23:51 -0700 | [diff] [blame] | 59 | #include "object_lock.h" |
Sebastien Hertz | fd3077e | 2014-04-23 10:32:43 +0200 | [diff] [blame] | 60 | #include "quick_exception_handler.h" |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 61 | #include "quick/quick_method_frame_info.h" |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 62 | #include "reflection.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 63 | #include "runtime.h" |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 64 | #include "scoped_thread_state_change.h" |
Elliott Hughes | 46e251b | 2012-05-22 15:10:45 -0700 | [diff] [blame] | 65 | #include "ScopedLocalRef.h" |
Anwar Ghuloum | 3c539ff | 2013-06-20 08:58:23 -0700 | [diff] [blame] | 66 | #include "ScopedUtfChars.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 67 | #include "stack.h" |
Nicolas Geoffray | 6bc4374 | 2015-10-12 18:11:10 +0100 | [diff] [blame] | 68 | #include "stack_map.h" |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 69 | #include "thread_list.h" |
Ian Rogers | 22d5e73 | 2014-07-15 22:23:51 -0700 | [diff] [blame] | 70 | #include "thread-inl.h" |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 71 | #include "utils.h" |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 72 | #include "verifier/dex_gc_map.h" |
Mathieu Chartier | 12d625f | 2015-03-13 11:33:37 -0700 | [diff] [blame] | 73 | #include "verifier/method_verifier.h" |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 74 | #include "verify_object-inl.h" |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 75 | #include "vmap_table.h" |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 76 | #include "well_known_classes.h" |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 77 | #include "interpreter/interpreter.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 78 | |
Yu Li | eac4424 | 2015-06-29 10:50:03 +0800 | [diff] [blame] | 79 | #if ART_USE_FUTEXES |
| 80 | #include "linux/futex.h" |
| 81 | #include "sys/syscall.h" |
| 82 | #ifndef SYS_futex |
| 83 | #define SYS_futex __NR_futex |
| 84 | #endif |
| 85 | #endif // ART_USE_FUTEXES |
| 86 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 87 | namespace art { |
| 88 | |
Ian Rogers | 0878d65 | 2013-04-18 17:38:35 -0700 | [diff] [blame] | 89 | bool Thread::is_started_ = false; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 90 | pthread_key_t Thread::pthread_key_self_; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 91 | ConditionVariable* Thread::resume_cond_ = nullptr; |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 92 | const size_t Thread::kStackOverflowImplicitCheckSize = GetStackOverflowReservedBytes(kRuntimeISA); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 93 | |
Evgenii Stepanov | 1e13374 | 2015-05-20 12:30:59 -0700 | [diff] [blame] | 94 | // For implicit overflow checks we reserve an extra piece of memory at the bottom |
| 95 | // of the stack (lowest memory). The higher portion of the memory |
| 96 | // is protected against reads and the lower is available for use while |
| 97 | // throwing the StackOverflow exception. |
| 98 | constexpr size_t kStackOverflowProtectedSize = 4 * kMemoryToolStackGuardSizeScale * KB; |
| 99 | |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 100 | static const char* kThreadNameDuringStartup = "<native thread without managed peer>"; |
| 101 | |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 102 | void Thread::InitCardTable() { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 103 | tlsPtr_.card_table = Runtime::Current()->GetHeap()->GetCardTable()->GetBiasedBegin(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 104 | } |
| 105 | |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 106 | static void UnimplementedEntryPoint() { |
| 107 | UNIMPLEMENTED(FATAL); |
| 108 | } |
| 109 | |
Andreas Gampe | 3cfa4d0 | 2015-10-06 17:04:01 -0700 | [diff] [blame] | 110 | void InitEntryPoints(JniEntryPoints* jpoints, QuickEntryPoints* qpoints); |
Ian Rogers | 7655f29 | 2013-07-29 11:07:13 -0700 | [diff] [blame] | 111 | |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 112 | void Thread::InitTlsEntryPoints() { |
Elliott Hughes | 3ea0f42 | 2012-04-16 17:01:43 -0700 | [diff] [blame] | 113 | // Insert a placeholder so we can easily tell if we call an unimplemented entry point. |
Andreas Gampe | 3cfa4d0 | 2015-10-06 17:04:01 -0700 | [diff] [blame] | 114 | uintptr_t* begin = reinterpret_cast<uintptr_t*>(&tlsPtr_.jni_entrypoints); |
Xingxing Pan | acbb308 | 2014-10-16 13:41:58 +0800 | [diff] [blame] | 115 | uintptr_t* end = reinterpret_cast<uintptr_t*>(reinterpret_cast<uint8_t*>(&tlsPtr_.quick_entrypoints) + |
| 116 | sizeof(tlsPtr_.quick_entrypoints)); |
Ian Rogers | 7655f29 | 2013-07-29 11:07:13 -0700 | [diff] [blame] | 117 | for (uintptr_t* it = begin; it != end; ++it) { |
| 118 | *it = reinterpret_cast<uintptr_t>(UnimplementedEntryPoint); |
| 119 | } |
Andreas Gampe | 3cfa4d0 | 2015-10-06 17:04:01 -0700 | [diff] [blame] | 120 | InitEntryPoints(&tlsPtr_.jni_entrypoints, &tlsPtr_.quick_entrypoints); |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 121 | } |
| 122 | |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 123 | void Thread::InitStringEntryPoints() { |
| 124 | ScopedObjectAccess soa(this); |
| 125 | QuickEntryPoints* qpoints = &tlsPtr_.quick_entrypoints; |
| 126 | qpoints->pNewEmptyString = reinterpret_cast<void(*)()>( |
| 127 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newEmptyString)); |
| 128 | qpoints->pNewStringFromBytes_B = reinterpret_cast<void(*)()>( |
| 129 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_B)); |
| 130 | qpoints->pNewStringFromBytes_BI = reinterpret_cast<void(*)()>( |
| 131 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BI)); |
| 132 | qpoints->pNewStringFromBytes_BII = reinterpret_cast<void(*)()>( |
| 133 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BII)); |
| 134 | qpoints->pNewStringFromBytes_BIII = reinterpret_cast<void(*)()>( |
| 135 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BIII)); |
| 136 | qpoints->pNewStringFromBytes_BIIString = reinterpret_cast<void(*)()>( |
| 137 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BIIString)); |
| 138 | qpoints->pNewStringFromBytes_BString = reinterpret_cast<void(*)()>( |
| 139 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BString)); |
| 140 | qpoints->pNewStringFromBytes_BIICharset = reinterpret_cast<void(*)()>( |
| 141 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BIICharset)); |
| 142 | qpoints->pNewStringFromBytes_BCharset = reinterpret_cast<void(*)()>( |
| 143 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BCharset)); |
| 144 | qpoints->pNewStringFromChars_C = reinterpret_cast<void(*)()>( |
| 145 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromChars_C)); |
| 146 | qpoints->pNewStringFromChars_CII = reinterpret_cast<void(*)()>( |
| 147 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromChars_CII)); |
| 148 | qpoints->pNewStringFromChars_IIC = reinterpret_cast<void(*)()>( |
| 149 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromChars_IIC)); |
| 150 | qpoints->pNewStringFromCodePoints = reinterpret_cast<void(*)()>( |
| 151 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromCodePoints)); |
| 152 | qpoints->pNewStringFromString = reinterpret_cast<void(*)()>( |
| 153 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromString)); |
| 154 | qpoints->pNewStringFromStringBuffer = reinterpret_cast<void(*)()>( |
| 155 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromStringBuffer)); |
| 156 | qpoints->pNewStringFromStringBuilder = reinterpret_cast<void(*)()>( |
| 157 | soa.DecodeMethod(WellKnownClasses::java_lang_StringFactory_newStringFromStringBuilder)); |
| 158 | } |
| 159 | |
Hiroshi Yamauchi | 3b4c189 | 2013-09-12 21:33:12 -0700 | [diff] [blame] | 160 | void Thread::ResetQuickAllocEntryPointsForThread() { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 161 | ResetQuickAllocEntryPoints(&tlsPtr_.quick_entrypoints); |
Hiroshi Yamauchi | 3b4c189 | 2013-09-12 21:33:12 -0700 | [diff] [blame] | 162 | } |
| 163 | |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 164 | class DeoptimizationContextRecord { |
Sebastien Hertz | f795869 | 2015-06-09 14:09:14 +0200 | [diff] [blame] | 165 | public: |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 166 | DeoptimizationContextRecord(const JValue& ret_val, |
| 167 | bool is_reference, |
| 168 | bool from_code, |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 169 | mirror::Throwable* pending_exception, |
| 170 | DeoptimizationContextRecord* link) |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 171 | : ret_val_(ret_val), |
| 172 | is_reference_(is_reference), |
| 173 | from_code_(from_code), |
| 174 | pending_exception_(pending_exception), |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 175 | link_(link) {} |
Sebastien Hertz | f795869 | 2015-06-09 14:09:14 +0200 | [diff] [blame] | 176 | |
| 177 | JValue GetReturnValue() const { return ret_val_; } |
| 178 | bool IsReference() const { return is_reference_; } |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 179 | bool GetFromCode() const { return from_code_; } |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 180 | mirror::Throwable* GetPendingException() const { return pending_exception_; } |
| 181 | DeoptimizationContextRecord* GetLink() const { return link_; } |
| 182 | mirror::Object** GetReturnValueAsGCRoot() { |
Sebastien Hertz | f795869 | 2015-06-09 14:09:14 +0200 | [diff] [blame] | 183 | DCHECK(is_reference_); |
| 184 | return ret_val_.GetGCRoot(); |
| 185 | } |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 186 | mirror::Object** GetPendingExceptionAsGCRoot() { |
| 187 | return reinterpret_cast<mirror::Object**>(&pending_exception_); |
| 188 | } |
Sebastien Hertz | f795869 | 2015-06-09 14:09:14 +0200 | [diff] [blame] | 189 | |
| 190 | private: |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 191 | // The value returned by the method at the top of the stack before deoptimization. |
Sebastien Hertz | f795869 | 2015-06-09 14:09:14 +0200 | [diff] [blame] | 192 | JValue ret_val_; |
Sebastien Hertz | 54b6248 | 2015-08-20 12:07:57 +0200 | [diff] [blame] | 193 | |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 194 | // Indicates whether the returned value is a reference. If so, the GC will visit it. |
| 195 | const bool is_reference_; |
| 196 | |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 197 | // Whether the context was created from an explicit deoptimization in the code. |
| 198 | const bool from_code_; |
| 199 | |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 200 | // The exception that was pending before deoptimization (or null if there was no pending |
| 201 | // exception). |
| 202 | mirror::Throwable* pending_exception_; |
| 203 | |
| 204 | // A link to the previous DeoptimizationContextRecord. |
| 205 | DeoptimizationContextRecord* const link_; |
| 206 | |
| 207 | DISALLOW_COPY_AND_ASSIGN(DeoptimizationContextRecord); |
Sebastien Hertz | f795869 | 2015-06-09 14:09:14 +0200 | [diff] [blame] | 208 | }; |
| 209 | |
| 210 | class StackedShadowFrameRecord { |
| 211 | public: |
| 212 | StackedShadowFrameRecord(ShadowFrame* shadow_frame, |
| 213 | StackedShadowFrameType type, |
| 214 | StackedShadowFrameRecord* link) |
| 215 | : shadow_frame_(shadow_frame), |
| 216 | type_(type), |
| 217 | link_(link) {} |
| 218 | |
| 219 | ShadowFrame* GetShadowFrame() const { return shadow_frame_; } |
| 220 | StackedShadowFrameType GetType() const { return type_; } |
| 221 | StackedShadowFrameRecord* GetLink() const { return link_; } |
| 222 | |
| 223 | private: |
| 224 | ShadowFrame* const shadow_frame_; |
| 225 | const StackedShadowFrameType type_; |
| 226 | StackedShadowFrameRecord* const link_; |
| 227 | |
| 228 | DISALLOW_COPY_AND_ASSIGN(StackedShadowFrameRecord); |
| 229 | }; |
| 230 | |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 231 | void Thread::PushDeoptimizationContext(const JValue& return_value, |
| 232 | bool is_reference, |
| 233 | bool from_code, |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 234 | mirror::Throwable* exception) { |
| 235 | DeoptimizationContextRecord* record = new DeoptimizationContextRecord( |
| 236 | return_value, |
| 237 | is_reference, |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 238 | from_code, |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 239 | exception, |
| 240 | tlsPtr_.deoptimization_context_stack); |
| 241 | tlsPtr_.deoptimization_context_stack = record; |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 242 | } |
| 243 | |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 244 | void Thread::PopDeoptimizationContext(JValue* result, |
| 245 | mirror::Throwable** exception, |
| 246 | bool* from_code) { |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 247 | AssertHasDeoptimizationContext(); |
| 248 | DeoptimizationContextRecord* record = tlsPtr_.deoptimization_context_stack; |
| 249 | tlsPtr_.deoptimization_context_stack = record->GetLink(); |
| 250 | result->SetJ(record->GetReturnValue().GetJ()); |
| 251 | *exception = record->GetPendingException(); |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 252 | *from_code = record->GetFromCode(); |
Mingyao Yang | 1f2d3ba | 2015-05-18 12:12:50 -0700 | [diff] [blame] | 253 | delete record; |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | void Thread::AssertHasDeoptimizationContext() { |
| 257 | CHECK(tlsPtr_.deoptimization_context_stack != nullptr) |
| 258 | << "No deoptimization context for thread " << *this; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 259 | } |
| 260 | |
Mingyao Yang | 1f2d3ba | 2015-05-18 12:12:50 -0700 | [diff] [blame] | 261 | void Thread::PushStackedShadowFrame(ShadowFrame* sf, StackedShadowFrameType type) { |
| 262 | StackedShadowFrameRecord* record = new StackedShadowFrameRecord( |
| 263 | sf, type, tlsPtr_.stacked_shadow_frame_record); |
| 264 | tlsPtr_.stacked_shadow_frame_record = record; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 265 | } |
| 266 | |
Andreas Gampe | 639bdd1 | 2015-06-03 11:22:45 -0700 | [diff] [blame] | 267 | ShadowFrame* Thread::PopStackedShadowFrame(StackedShadowFrameType type, bool must_be_present) { |
Mingyao Yang | 1f2d3ba | 2015-05-18 12:12:50 -0700 | [diff] [blame] | 268 | StackedShadowFrameRecord* record = tlsPtr_.stacked_shadow_frame_record; |
Andreas Gampe | 639bdd1 | 2015-06-03 11:22:45 -0700 | [diff] [blame] | 269 | if (must_be_present) { |
| 270 | DCHECK(record != nullptr); |
| 271 | DCHECK_EQ(record->GetType(), type); |
| 272 | } else { |
| 273 | if (record == nullptr || record->GetType() != type) { |
| 274 | return nullptr; |
| 275 | } |
| 276 | } |
Mingyao Yang | 1f2d3ba | 2015-05-18 12:12:50 -0700 | [diff] [blame] | 277 | tlsPtr_.stacked_shadow_frame_record = record->GetLink(); |
| 278 | ShadowFrame* shadow_frame = record->GetShadowFrame(); |
| 279 | delete record; |
| 280 | return shadow_frame; |
Andreas Gampe | 2a0d4ec | 2014-06-02 22:05:22 -0700 | [diff] [blame] | 281 | } |
| 282 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 283 | class FrameIdToShadowFrame { |
| 284 | public: |
| 285 | static FrameIdToShadowFrame* Create(size_t frame_id, |
| 286 | ShadowFrame* shadow_frame, |
| 287 | FrameIdToShadowFrame* next, |
| 288 | size_t num_vregs) { |
| 289 | // Append a bool array at the end to keep track of what vregs are updated by the debugger. |
| 290 | uint8_t* memory = new uint8_t[sizeof(FrameIdToShadowFrame) + sizeof(bool) * num_vregs]; |
| 291 | return new (memory) FrameIdToShadowFrame(frame_id, shadow_frame, next); |
| 292 | } |
| 293 | |
| 294 | static void Delete(FrameIdToShadowFrame* f) { |
| 295 | uint8_t* memory = reinterpret_cast<uint8_t*>(f); |
| 296 | delete[] memory; |
| 297 | } |
| 298 | |
| 299 | size_t GetFrameId() const { return frame_id_; } |
| 300 | ShadowFrame* GetShadowFrame() const { return shadow_frame_; } |
| 301 | FrameIdToShadowFrame* GetNext() const { return next_; } |
| 302 | void SetNext(FrameIdToShadowFrame* next) { next_ = next; } |
| 303 | bool* GetUpdatedVRegFlags() { |
| 304 | return updated_vreg_flags_; |
| 305 | } |
| 306 | |
| 307 | private: |
| 308 | FrameIdToShadowFrame(size_t frame_id, |
| 309 | ShadowFrame* shadow_frame, |
| 310 | FrameIdToShadowFrame* next) |
| 311 | : frame_id_(frame_id), |
| 312 | shadow_frame_(shadow_frame), |
| 313 | next_(next) {} |
| 314 | |
| 315 | const size_t frame_id_; |
| 316 | ShadowFrame* const shadow_frame_; |
| 317 | FrameIdToShadowFrame* next_; |
| 318 | bool updated_vreg_flags_[0]; |
| 319 | |
| 320 | DISALLOW_COPY_AND_ASSIGN(FrameIdToShadowFrame); |
| 321 | }; |
| 322 | |
| 323 | static FrameIdToShadowFrame* FindFrameIdToShadowFrame(FrameIdToShadowFrame* head, |
| 324 | size_t frame_id) { |
| 325 | FrameIdToShadowFrame* found = nullptr; |
| 326 | for (FrameIdToShadowFrame* record = head; record != nullptr; record = record->GetNext()) { |
| 327 | if (record->GetFrameId() == frame_id) { |
| 328 | if (kIsDebugBuild) { |
| 329 | // Sanity check we have at most one record for this frame. |
| 330 | CHECK(found == nullptr) << "Multiple records for the frame " << frame_id; |
| 331 | found = record; |
| 332 | } else { |
| 333 | return record; |
| 334 | } |
| 335 | } |
| 336 | } |
| 337 | return found; |
| 338 | } |
| 339 | |
| 340 | ShadowFrame* Thread::FindDebuggerShadowFrame(size_t frame_id) { |
| 341 | FrameIdToShadowFrame* record = FindFrameIdToShadowFrame( |
| 342 | tlsPtr_.frame_id_to_shadow_frame, frame_id); |
| 343 | if (record != nullptr) { |
| 344 | return record->GetShadowFrame(); |
| 345 | } |
| 346 | return nullptr; |
| 347 | } |
| 348 | |
| 349 | // Must only be called when FindDebuggerShadowFrame(frame_id) returns non-nullptr. |
| 350 | bool* Thread::GetUpdatedVRegFlags(size_t frame_id) { |
| 351 | FrameIdToShadowFrame* record = FindFrameIdToShadowFrame( |
| 352 | tlsPtr_.frame_id_to_shadow_frame, frame_id); |
| 353 | CHECK(record != nullptr); |
| 354 | return record->GetUpdatedVRegFlags(); |
| 355 | } |
| 356 | |
| 357 | ShadowFrame* Thread::FindOrCreateDebuggerShadowFrame(size_t frame_id, |
| 358 | uint32_t num_vregs, |
| 359 | ArtMethod* method, |
| 360 | uint32_t dex_pc) { |
| 361 | ShadowFrame* shadow_frame = FindDebuggerShadowFrame(frame_id); |
| 362 | if (shadow_frame != nullptr) { |
| 363 | return shadow_frame; |
| 364 | } |
| 365 | VLOG(deopt) << "Create pre-deopted ShadowFrame for " << PrettyMethod(method); |
| 366 | shadow_frame = ShadowFrame::CreateDeoptimizedFrame(num_vregs, nullptr, method, dex_pc); |
| 367 | FrameIdToShadowFrame* record = FrameIdToShadowFrame::Create(frame_id, |
| 368 | shadow_frame, |
| 369 | tlsPtr_.frame_id_to_shadow_frame, |
| 370 | num_vregs); |
| 371 | for (uint32_t i = 0; i < num_vregs; i++) { |
| 372 | // Do this to clear all references for root visitors. |
| 373 | shadow_frame->SetVRegReference(i, nullptr); |
| 374 | // This flag will be changed to true if the debugger modifies the value. |
| 375 | record->GetUpdatedVRegFlags()[i] = false; |
| 376 | } |
| 377 | tlsPtr_.frame_id_to_shadow_frame = record; |
| 378 | return shadow_frame; |
| 379 | } |
| 380 | |
| 381 | void Thread::RemoveDebuggerShadowFrameMapping(size_t frame_id) { |
| 382 | FrameIdToShadowFrame* head = tlsPtr_.frame_id_to_shadow_frame; |
| 383 | if (head->GetFrameId() == frame_id) { |
| 384 | tlsPtr_.frame_id_to_shadow_frame = head->GetNext(); |
| 385 | FrameIdToShadowFrame::Delete(head); |
| 386 | return; |
| 387 | } |
| 388 | FrameIdToShadowFrame* prev = head; |
| 389 | for (FrameIdToShadowFrame* record = head->GetNext(); |
| 390 | record != nullptr; |
| 391 | prev = record, record = record->GetNext()) { |
| 392 | if (record->GetFrameId() == frame_id) { |
| 393 | prev->SetNext(record->GetNext()); |
| 394 | FrameIdToShadowFrame::Delete(record); |
| 395 | return; |
| 396 | } |
| 397 | } |
| 398 | LOG(FATAL) << "No shadow frame for frame " << frame_id; |
| 399 | UNREACHABLE(); |
| 400 | } |
| 401 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 402 | void Thread::InitTid() { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 403 | tls32_.tid = ::art::GetTid(); |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 404 | } |
| 405 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 406 | void Thread::InitAfterFork() { |
Elliott Hughes | 8029cbe | 2012-05-22 09:13:08 -0700 | [diff] [blame] | 407 | // One thread (us) survived the fork, but we have a new tid so we need to |
| 408 | // update the value stashed in this Thread*. |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 409 | InitTid(); |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 410 | } |
| 411 | |
Brian Carlstrom | 78128a6 | 2011-09-15 17:21:19 -0700 | [diff] [blame] | 412 | void* Thread::CreateCallback(void* arg) { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 413 | Thread* self = reinterpret_cast<Thread*>(arg); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 414 | Runtime* runtime = Runtime::Current(); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 415 | if (runtime == nullptr) { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 416 | LOG(ERROR) << "Thread attaching to non-existent runtime: " << *self; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 417 | return nullptr; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 418 | } |
| 419 | { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 420 | // TODO: pass self to MutexLock - requires self to equal Thread::Current(), which is only true |
| 421 | // after self->Init(). |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 422 | MutexLock mu(nullptr, *Locks::runtime_shutdown_lock_); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 423 | // Check that if we got here we cannot be shutting down (as shutdown should never have started |
| 424 | // while threads are being born). |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 425 | CHECK(!runtime->IsShuttingDownLocked()); |
Andreas Gampe | 449357d | 2015-06-01 22:29:51 -0700 | [diff] [blame] | 426 | // Note: given that the JNIEnv is created in the parent thread, the only failure point here is |
| 427 | // a mess in InitStackHwm. We do not have a reasonable way to recover from that, so abort |
| 428 | // the runtime in such a case. In case this ever changes, we need to make sure here to |
| 429 | // delete the tmp_jni_env, as we own it at this point. |
| 430 | CHECK(self->Init(runtime->GetThreadList(), runtime->GetJavaVM(), self->tlsPtr_.tmp_jni_env)); |
| 431 | self->tlsPtr_.tmp_jni_env = nullptr; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 432 | Runtime::Current()->EndThreadBirth(); |
| 433 | } |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 434 | { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 435 | ScopedObjectAccess soa(self); |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 436 | self->InitStringEntryPoints(); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 437 | |
| 438 | // Copy peer into self, deleting global reference when done. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 439 | CHECK(self->tlsPtr_.jpeer != nullptr); |
| 440 | self->tlsPtr_.opeer = soa.Decode<mirror::Object*>(self->tlsPtr_.jpeer); |
| 441 | self->GetJniEnv()->DeleteGlobalRef(self->tlsPtr_.jpeer); |
| 442 | self->tlsPtr_.jpeer = nullptr; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 443 | self->SetThreadName(self->GetThreadName(soa)->ToModifiedUtf8().c_str()); |
Narayan Kamath | a0b3451 | 2014-10-07 12:51:26 +0100 | [diff] [blame] | 444 | |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 445 | ArtField* priorityField = soa.DecodeField(WellKnownClasses::java_lang_Thread_priority); |
Narayan Kamath | a0b3451 | 2014-10-07 12:51:26 +0100 | [diff] [blame] | 446 | self->SetNativePriority(priorityField->GetInt(self->tlsPtr_.opeer)); |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 447 | Dbg::PostThreadStart(self); |
| 448 | |
| 449 | // Invoke the 'run' method of our java.lang.Thread. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 450 | mirror::Object* receiver = self->tlsPtr_.opeer; |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 451 | jmethodID mid = WellKnownClasses::java_lang_Thread_run; |
Jeff Hao | 39b6c24 | 2015-05-19 20:30:23 -0700 | [diff] [blame] | 452 | ScopedLocalRef<jobject> ref(soa.Env(), soa.AddLocalReference<jobject>(receiver)); |
| 453 | InvokeVirtualOrInterfaceWithJValues(soa, ref.get(), mid, nullptr); |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 454 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 455 | // Detach and delete self. |
| 456 | Runtime::Current()->GetThreadList()->Unregister(self); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 457 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 458 | return nullptr; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 459 | } |
| 460 | |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 461 | Thread* Thread::FromManagedThread(const ScopedObjectAccessAlreadyRunnable& soa, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 462 | mirror::Object* thread_peer) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 463 | ArtField* f = soa.DecodeField(WellKnownClasses::java_lang_Thread_nativePeer); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 464 | Thread* result = reinterpret_cast<Thread*>(static_cast<uintptr_t>(f->GetLong(thread_peer))); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 465 | // Sanity check that if we have a result it is either suspended or we hold the thread_list_lock_ |
| 466 | // to stop it from going away. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 467 | if (kIsDebugBuild) { |
| 468 | MutexLock mu(soa.Self(), *Locks::thread_suspend_count_lock_); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 469 | if (result != nullptr && !result->IsSuspended()) { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 470 | Locks::thread_list_lock_->AssertHeld(soa.Self()); |
| 471 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 472 | } |
| 473 | return result; |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 474 | } |
| 475 | |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 476 | Thread* Thread::FromManagedThread(const ScopedObjectAccessAlreadyRunnable& soa, |
| 477 | jobject java_thread) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 478 | return FromManagedThread(soa, soa.Decode<mirror::Object*>(java_thread)); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 479 | } |
| 480 | |
Elliott Hughes | ab7b9dc | 2012-03-27 13:16:29 -0700 | [diff] [blame] | 481 | static size_t FixStackSize(size_t stack_size) { |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 482 | // A stack size of zero means "use the default". |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 483 | if (stack_size == 0) { |
| 484 | stack_size = Runtime::Current()->GetDefaultStackSize(); |
| 485 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 486 | |
Brian Carlstrom | 6414a97 | 2012-04-14 14:20:04 -0700 | [diff] [blame] | 487 | // Dalvik used the bionic pthread default stack size for native threads, |
| 488 | // so include that here to support apps that expect large native stacks. |
| 489 | stack_size += 1 * MB; |
| 490 | |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 491 | // It's not possible to request a stack smaller than the system-defined PTHREAD_STACK_MIN. |
| 492 | if (stack_size < PTHREAD_STACK_MIN) { |
| 493 | stack_size = PTHREAD_STACK_MIN; |
| 494 | } |
| 495 | |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 496 | if (Runtime::Current()->ExplicitStackOverflowChecks()) { |
| 497 | // It's likely that callers are trying to ensure they have at least a certain amount of |
| 498 | // stack space, so we should add our reserved space on top of what they requested, rather |
| 499 | // than implicitly take it away from them. |
Andreas Gampe | 7ea6f79 | 2014-07-14 16:21:44 -0700 | [diff] [blame] | 500 | stack_size += GetStackOverflowReservedBytes(kRuntimeISA); |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 501 | } else { |
| 502 | // If we are going to use implicit stack checks, allocate space for the protected |
| 503 | // region at the bottom of the stack. |
Dave Allison | b090a18 | 2014-08-14 17:02:48 +0000 | [diff] [blame] | 504 | stack_size += Thread::kStackOverflowImplicitCheckSize + |
| 505 | GetStackOverflowReservedBytes(kRuntimeISA); |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 506 | } |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 507 | |
| 508 | // Some systems require the stack size to be a multiple of the system page size, so round up. |
| 509 | stack_size = RoundUp(stack_size, kPageSize); |
| 510 | |
| 511 | return stack_size; |
| 512 | } |
| 513 | |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 514 | // Global variable to prevent the compiler optimizing away the page reads for the stack. |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 515 | uint8_t dont_optimize_this; |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 516 | |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 517 | // Install a protected region in the stack. This is used to trigger a SIGSEGV if a stack |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 518 | // overflow is detected. It is located right below the stack_begin_. |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 519 | // |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 520 | // There is a little complexity here that deserves a special mention. On some |
| 521 | // architectures, the stack created using a VM_GROWSDOWN flag |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 522 | // to prevent memory being allocated when it's not needed. This flag makes the |
| 523 | // kernel only allocate memory for the stack by growing down in memory. Because we |
| 524 | // want to put an mprotected region far away from that at the stack top, we need |
| 525 | // to make sure the pages for the stack are mapped in before we call mprotect. We do |
| 526 | // this by reading every page from the stack bottom (highest address) to the stack top. |
| 527 | // We then madvise this away. |
Evgenii Stepanov | 4abf451 | 2015-07-13 10:41:57 -0700 | [diff] [blame] | 528 | |
| 529 | // AddressSanitizer does not like the part of this functions that reads every stack page. |
| 530 | // Looks a lot like an out-of-bounds access. |
| 531 | ATTRIBUTE_NO_SANITIZE_ADDRESS |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 532 | void Thread::InstallImplicitProtection() { |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 533 | uint8_t* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize; |
| 534 | uint8_t* stack_himem = tlsPtr_.stack_end; |
| 535 | uint8_t* stack_top = reinterpret_cast<uint8_t*>(reinterpret_cast<uintptr_t>(&stack_himem) & |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 536 | ~(kPageSize - 1)); // Page containing current top of stack. |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 537 | |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 538 | // First remove the protection on the protected region as will want to read and |
| 539 | // write it. This may fail (on the first attempt when the stack is not mapped) |
| 540 | // but we ignore that. |
| 541 | UnprotectStack(); |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 542 | |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 543 | // Map in the stack. This must be done by reading from the |
| 544 | // current stack pointer downwards as the stack may be mapped using VM_GROWSDOWN |
| 545 | // in the kernel. Any access more than a page below the current SP might cause |
| 546 | // a segv. |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 547 | |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 548 | // Read every page from the high address to the low. |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 549 | for (uint8_t* p = stack_top; p >= pregion; p -= kPageSize) { |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 550 | dont_optimize_this = *p; |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 551 | } |
| 552 | |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 553 | VLOG(threads) << "installing stack protected region at " << std::hex << |
| 554 | static_cast<void*>(pregion) << " to " << |
| 555 | static_cast<void*>(pregion + kStackOverflowProtectedSize - 1); |
| 556 | |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 557 | // Protect the bottom of the stack to prevent read/write to it. |
| 558 | ProtectStack(); |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 559 | |
| 560 | // Tell the kernel that we won't be needing these pages any more. |
Dave Allison | 69dfe51 | 2014-07-11 17:11:58 +0000 | [diff] [blame] | 561 | // NB. madvise will probably write zeroes into the memory (on linux it does). |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 562 | uint32_t unwanted_size = stack_top - pregion - kPageSize; |
| 563 | madvise(pregion, unwanted_size, MADV_DONTNEED); |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 564 | } |
| 565 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 566 | void Thread::CreateNativeThread(JNIEnv* env, jobject java_peer, size_t stack_size, bool is_daemon) { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 567 | CHECK(java_peer != nullptr); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 568 | Thread* self = static_cast<JNIEnvExt*>(env)->self; |
Andreas Gampe | 5662383 | 2015-07-09 21:53:15 -0700 | [diff] [blame] | 569 | |
| 570 | if (VLOG_IS_ON(threads)) { |
| 571 | ScopedObjectAccess soa(env); |
| 572 | |
| 573 | ArtField* f = soa.DecodeField(WellKnownClasses::java_lang_Thread_name); |
| 574 | mirror::String* java_name = reinterpret_cast<mirror::String*>(f->GetObject( |
| 575 | soa.Decode<mirror::Object*>(java_peer))); |
| 576 | std::string thread_name; |
| 577 | if (java_name != nullptr) { |
| 578 | thread_name = java_name->ToModifiedUtf8(); |
| 579 | } else { |
| 580 | thread_name = "(Unnamed)"; |
| 581 | } |
| 582 | |
| 583 | VLOG(threads) << "Creating native thread for " << thread_name; |
| 584 | self->Dump(LOG(INFO)); |
| 585 | } |
| 586 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 587 | Runtime* runtime = Runtime::Current(); |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 588 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 589 | // Atomically start the birth of the thread ensuring the runtime isn't shutting down. |
| 590 | bool thread_start_during_shutdown = false; |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 591 | { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 592 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 593 | if (runtime->IsShuttingDownLocked()) { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 594 | thread_start_during_shutdown = true; |
| 595 | } else { |
| 596 | runtime->StartThreadBirth(); |
| 597 | } |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 598 | } |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 599 | if (thread_start_during_shutdown) { |
| 600 | ScopedLocalRef<jclass> error_class(env, env->FindClass("java/lang/InternalError")); |
| 601 | env->ThrowNew(error_class.get(), "Thread starting during runtime shutdown"); |
| 602 | return; |
| 603 | } |
| 604 | |
| 605 | Thread* child_thread = new Thread(is_daemon); |
| 606 | // Use global JNI ref to hold peer live while child thread starts. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 607 | child_thread->tlsPtr_.jpeer = env->NewGlobalRef(java_peer); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 608 | stack_size = FixStackSize(stack_size); |
| 609 | |
Anwar Ghuloum | 3c50a4b | 2013-06-21 13:05:23 -0700 | [diff] [blame] | 610 | // Thread.start is synchronized, so we know that nativePeer is 0, and know that we're not racing to |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 611 | // assign it. |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 612 | env->SetLongField(java_peer, WellKnownClasses::java_lang_Thread_nativePeer, |
| 613 | reinterpret_cast<jlong>(child_thread)); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 614 | |
Andreas Gampe | 449357d | 2015-06-01 22:29:51 -0700 | [diff] [blame] | 615 | // Try to allocate a JNIEnvExt for the thread. We do this here as we might be out of memory and |
| 616 | // do not have a good way to report this on the child's side. |
| 617 | std::unique_ptr<JNIEnvExt> child_jni_env_ext( |
| 618 | JNIEnvExt::Create(child_thread, Runtime::Current()->GetJavaVM())); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 619 | |
Andreas Gampe | 449357d | 2015-06-01 22:29:51 -0700 | [diff] [blame] | 620 | int pthread_create_result = 0; |
| 621 | if (child_jni_env_ext.get() != nullptr) { |
| 622 | pthread_t new_pthread; |
| 623 | pthread_attr_t attr; |
| 624 | child_thread->tlsPtr_.tmp_jni_env = child_jni_env_ext.get(); |
| 625 | CHECK_PTHREAD_CALL(pthread_attr_init, (&attr), "new thread"); |
| 626 | CHECK_PTHREAD_CALL(pthread_attr_setdetachstate, (&attr, PTHREAD_CREATE_DETACHED), |
| 627 | "PTHREAD_CREATE_DETACHED"); |
| 628 | CHECK_PTHREAD_CALL(pthread_attr_setstacksize, (&attr, stack_size), stack_size); |
| 629 | pthread_create_result = pthread_create(&new_pthread, |
| 630 | &attr, |
| 631 | Thread::CreateCallback, |
| 632 | child_thread); |
| 633 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attr), "new thread"); |
| 634 | |
| 635 | if (pthread_create_result == 0) { |
| 636 | // pthread_create started the new thread. The child is now responsible for managing the |
| 637 | // JNIEnvExt we created. |
| 638 | // Note: we can't check for tmp_jni_env == nullptr, as that would require synchronization |
| 639 | // between the threads. |
| 640 | child_jni_env_ext.release(); |
| 641 | return; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 642 | } |
Andreas Gampe | 449357d | 2015-06-01 22:29:51 -0700 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | // Either JNIEnvExt::Create or pthread_create(3) failed, so clean up. |
| 646 | { |
| 647 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
| 648 | runtime->EndThreadBirth(); |
| 649 | } |
| 650 | // Manually delete the global reference since Thread::Init will not have been run. |
| 651 | env->DeleteGlobalRef(child_thread->tlsPtr_.jpeer); |
| 652 | child_thread->tlsPtr_.jpeer = nullptr; |
| 653 | delete child_thread; |
| 654 | child_thread = nullptr; |
| 655 | // TODO: remove from thread group? |
| 656 | env->SetLongField(java_peer, WellKnownClasses::java_lang_Thread_nativePeer, 0); |
| 657 | { |
| 658 | std::string msg(child_jni_env_ext.get() == nullptr ? |
| 659 | "Could not allocate JNI Env" : |
| 660 | StringPrintf("pthread_create (%s stack) failed: %s", |
| 661 | PrettySize(stack_size).c_str(), strerror(pthread_create_result))); |
| 662 | ScopedObjectAccess soa(env); |
| 663 | soa.Self()->ThrowOutOfMemoryError(msg.c_str()); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 664 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 665 | } |
| 666 | |
Andreas Gampe | 449357d | 2015-06-01 22:29:51 -0700 | [diff] [blame] | 667 | bool Thread::Init(ThreadList* thread_list, JavaVMExt* java_vm, JNIEnvExt* jni_env_ext) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 668 | // This function does all the initialization that must be run by the native thread it applies to. |
| 669 | // (When we create a new thread from managed code, we allocate the Thread* in Thread::Create so |
| 670 | // we can handshake with the corresponding native thread when it's ready.) Check this native |
| 671 | // thread hasn't been through here already... |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 672 | CHECK(Thread::Current() == nullptr); |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 673 | |
| 674 | // Set pthread_self_ ahead of pthread_setspecific, that makes Thread::Current function, this |
| 675 | // avoids pthread_self_ ever being invalid when discovered from Thread::Current(). |
| 676 | tlsPtr_.pthread_self = pthread_self(); |
| 677 | CHECK(is_started_); |
| 678 | |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 679 | SetUpAlternateSignalStack(); |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 680 | if (!InitStackHwm()) { |
| 681 | return false; |
| 682 | } |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 683 | InitCpu(); |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 684 | InitTlsEntryPoints(); |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 685 | RemoveSuspendTrigger(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 686 | InitCardTable(); |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 687 | InitTid(); |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 688 | interpreter::InitInterpreterTls(this); |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 689 | |
Andreas Gampe | 4382f1e | 2015-08-05 01:08:53 +0000 | [diff] [blame] | 690 | #ifdef __ANDROID__ |
| 691 | __get_tls()[TLS_SLOT_ART_THREAD_SELF] = this; |
| 692 | #else |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 693 | CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, this), "attach self"); |
Andreas Gampe | 4382f1e | 2015-08-05 01:08:53 +0000 | [diff] [blame] | 694 | #endif |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 695 | DCHECK_EQ(Thread::Current(), this); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 696 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 697 | tls32_.thin_lock_thread_id = thread_list->AllocThreadId(this); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 698 | |
Andreas Gampe | 449357d | 2015-06-01 22:29:51 -0700 | [diff] [blame] | 699 | if (jni_env_ext != nullptr) { |
| 700 | DCHECK_EQ(jni_env_ext->vm, java_vm); |
| 701 | DCHECK_EQ(jni_env_ext->self, this); |
| 702 | tlsPtr_.jni_env = jni_env_ext; |
| 703 | } else { |
| 704 | tlsPtr_.jni_env = JNIEnvExt::Create(this, java_vm); |
| 705 | if (tlsPtr_.jni_env == nullptr) { |
| 706 | return false; |
| 707 | } |
Andreas Gampe | 3f5881f | 2015-04-08 10:26:16 -0700 | [diff] [blame] | 708 | } |
| 709 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 710 | thread_list->Register(this); |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 711 | return true; |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 712 | } |
| 713 | |
Mathieu Chartier | 664bebf | 2012-11-12 16:54:11 -0800 | [diff] [blame] | 714 | Thread* Thread::Attach(const char* thread_name, bool as_daemon, jobject thread_group, |
| 715 | bool create_peer) { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 716 | Runtime* runtime = Runtime::Current(); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 717 | if (runtime == nullptr) { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 718 | LOG(ERROR) << "Thread attaching to non-existent runtime: " << thread_name; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 719 | return nullptr; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 720 | } |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 721 | Thread* self; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 722 | { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 723 | MutexLock mu(nullptr, *Locks::runtime_shutdown_lock_); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 724 | if (runtime->IsShuttingDownLocked()) { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 725 | LOG(ERROR) << "Thread attaching while runtime is shutting down: " << thread_name; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 726 | return nullptr; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 727 | } else { |
| 728 | Runtime::Current()->StartThreadBirth(); |
| 729 | self = new Thread(as_daemon); |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 730 | bool init_success = self->Init(runtime->GetThreadList(), runtime->GetJavaVM()); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 731 | Runtime::Current()->EndThreadBirth(); |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 732 | if (!init_success) { |
| 733 | delete self; |
| 734 | return nullptr; |
| 735 | } |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 736 | } |
| 737 | } |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 738 | |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 739 | self->InitStringEntryPoints(); |
| 740 | |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 741 | CHECK_NE(self->GetState(), kRunnable); |
| 742 | self->SetState(kNative); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 743 | |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 744 | // If we're the main thread, ClassLinker won't be created until after we're attached, |
| 745 | // so that thread needs a two-stage attach. Regular threads don't need this hack. |
Elliott Hughes | d9c67be | 2012-02-02 19:54:06 -0800 | [diff] [blame] | 746 | // In the compiler, all threads need this hack, because no-one's going to be getting |
| 747 | // a native peer! |
Mathieu Chartier | 664bebf | 2012-11-12 16:54:11 -0800 | [diff] [blame] | 748 | if (create_peer) { |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 749 | self->CreatePeer(thread_name, as_daemon, thread_group); |
Andreas Gampe | 4b1d4ec | 2015-10-01 16:47:26 -0700 | [diff] [blame] | 750 | if (self->IsExceptionPending()) { |
| 751 | // We cannot keep the exception around, as we're deleting self. Try to be helpful and log it. |
| 752 | { |
| 753 | ScopedObjectAccess soa(self); |
| 754 | LOG(ERROR) << "Exception creating thread peer:"; |
| 755 | LOG(ERROR) << self->GetException()->Dump(); |
| 756 | self->ClearException(); |
| 757 | } |
| 758 | runtime->GetThreadList()->Unregister(self); |
| 759 | // Unregister deletes self, no need to do this here. |
| 760 | return nullptr; |
| 761 | } |
Elliott Hughes | 06e3ad4 | 2012-02-07 14:51:57 -0800 | [diff] [blame] | 762 | } else { |
| 763 | // These aren't necessary, but they improve diagnostics for unit tests & command-line tools. |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 764 | if (thread_name != nullptr) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 765 | self->tlsPtr_.name->assign(thread_name); |
Elliott Hughes | 22869a9 | 2012-03-27 14:08:24 -0700 | [diff] [blame] | 766 | ::art::SetThreadName(thread_name); |
Brian Carlstrom | 3ea69c0 | 2014-08-18 15:38:34 -0700 | [diff] [blame] | 767 | } else if (self->GetJniEnv()->check_jni) { |
| 768 | LOG(WARNING) << *Thread::Current() << " attached without supplying a name"; |
Elliott Hughes | 22869a9 | 2012-03-27 14:08:24 -0700 | [diff] [blame] | 769 | } |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 770 | } |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 771 | |
Andreas Gampe | 5662383 | 2015-07-09 21:53:15 -0700 | [diff] [blame] | 772 | if (VLOG_IS_ON(threads)) { |
| 773 | if (thread_name != nullptr) { |
| 774 | VLOG(threads) << "Attaching thread " << thread_name; |
| 775 | } else { |
| 776 | VLOG(threads) << "Attaching unnamed thread."; |
| 777 | } |
| 778 | ScopedObjectAccess soa(self); |
| 779 | self->Dump(LOG(INFO)); |
| 780 | } |
| 781 | |
Daniel Mihalyi | dfafeef | 2014-10-20 11:47:56 +0200 | [diff] [blame] | 782 | { |
| 783 | ScopedObjectAccess soa(self); |
| 784 | Dbg::PostThreadStart(self); |
| 785 | } |
| 786 | |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 787 | return self; |
| 788 | } |
| 789 | |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 790 | void Thread::CreatePeer(const char* name, bool as_daemon, jobject thread_group) { |
| 791 | Runtime* runtime = Runtime::Current(); |
| 792 | CHECK(runtime->IsStarted()); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 793 | JNIEnv* env = tlsPtr_.jni_env; |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 794 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 795 | if (thread_group == nullptr) { |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 796 | thread_group = runtime->GetMainThreadGroup(); |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 797 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 798 | ScopedLocalRef<jobject> thread_name(env, env->NewStringUTF(name)); |
Mathieu Chartier | e07fd17 | 2014-11-10 16:58:19 -0800 | [diff] [blame] | 799 | // Add missing null check in case of OOM b/18297817 |
Vladimir Marko | 4451205 | 2014-11-12 15:41:57 +0000 | [diff] [blame] | 800 | if (name != nullptr && thread_name.get() == nullptr) { |
Mathieu Chartier | e07fd17 | 2014-11-10 16:58:19 -0800 | [diff] [blame] | 801 | CHECK(IsExceptionPending()); |
| 802 | return; |
| 803 | } |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 804 | jint thread_priority = GetNativePriority(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 805 | jboolean thread_is_daemon = as_daemon; |
| 806 | |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 807 | ScopedLocalRef<jobject> peer(env, env->AllocObject(WellKnownClasses::java_lang_Thread)); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 808 | if (peer.get() == nullptr) { |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 809 | CHECK(IsExceptionPending()); |
| 810 | return; |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 811 | } |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 812 | { |
| 813 | ScopedObjectAccess soa(this); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 814 | tlsPtr_.opeer = soa.Decode<mirror::Object*>(peer.get()); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 815 | } |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 816 | env->CallNonvirtualVoidMethod(peer.get(), |
| 817 | WellKnownClasses::java_lang_Thread, |
| 818 | WellKnownClasses::java_lang_Thread_init, |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 819 | thread_group, thread_name.get(), thread_priority, thread_is_daemon); |
Andreas Gampe | 4b1d4ec | 2015-10-01 16:47:26 -0700 | [diff] [blame] | 820 | if (IsExceptionPending()) { |
| 821 | return; |
| 822 | } |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 823 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 824 | Thread* self = this; |
| 825 | DCHECK_EQ(self, Thread::Current()); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 826 | env->SetLongField(peer.get(), WellKnownClasses::java_lang_Thread_nativePeer, |
| 827 | reinterpret_cast<jlong>(self)); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 828 | |
| 829 | ScopedObjectAccess soa(self); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 830 | StackHandleScope<1> hs(self); |
Andreas Gampe | 5a4b8a2 | 2014-09-11 08:30:08 -0700 | [diff] [blame] | 831 | MutableHandle<mirror::String> peer_thread_name(hs.NewHandle(GetThreadName(soa))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 832 | if (peer_thread_name.Get() == nullptr) { |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 833 | // The Thread constructor should have set the Thread.name to a |
| 834 | // non-null value. However, because we can run without code |
| 835 | // available (in the compiler, in tests), we manually assign the |
| 836 | // fields the constructor should have set. |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 837 | if (runtime->IsActiveTransaction()) { |
| 838 | InitPeer<true>(soa, thread_is_daemon, thread_group, thread_name.get(), thread_priority); |
| 839 | } else { |
| 840 | InitPeer<false>(soa, thread_is_daemon, thread_group, thread_name.get(), thread_priority); |
| 841 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 842 | peer_thread_name.Assign(GetThreadName(soa)); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 843 | } |
Elliott Hughes | 225f5a1 | 2012-06-11 11:23:48 -0700 | [diff] [blame] | 844 | // 'thread_name' may have been null, so don't trust 'peer_thread_name' to be non-null. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 845 | if (peer_thread_name.Get() != nullptr) { |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 846 | SetThreadName(peer_thread_name->ToModifiedUtf8().c_str()); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 847 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 848 | } |
| 849 | |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 850 | template<bool kTransactionActive> |
| 851 | void Thread::InitPeer(ScopedObjectAccess& soa, jboolean thread_is_daemon, jobject thread_group, |
| 852 | jobject thread_name, jint thread_priority) { |
| 853 | soa.DecodeField(WellKnownClasses::java_lang_Thread_daemon)-> |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 854 | SetBoolean<kTransactionActive>(tlsPtr_.opeer, thread_is_daemon); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 855 | soa.DecodeField(WellKnownClasses::java_lang_Thread_group)-> |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 856 | SetObject<kTransactionActive>(tlsPtr_.opeer, soa.Decode<mirror::Object*>(thread_group)); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 857 | soa.DecodeField(WellKnownClasses::java_lang_Thread_name)-> |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 858 | SetObject<kTransactionActive>(tlsPtr_.opeer, soa.Decode<mirror::Object*>(thread_name)); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 859 | soa.DecodeField(WellKnownClasses::java_lang_Thread_priority)-> |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 860 | SetInt<kTransactionActive>(tlsPtr_.opeer, thread_priority); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 861 | } |
| 862 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 863 | void Thread::SetThreadName(const char* name) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 864 | tlsPtr_.name->assign(name); |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 865 | ::art::SetThreadName(name); |
| 866 | Dbg::DdmSendThreadNotification(this, CHUNK_TYPE("THNM")); |
| 867 | } |
| 868 | |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 869 | bool Thread::InitStackHwm() { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 870 | void* read_stack_base; |
| 871 | size_t read_stack_size; |
Elliott Hughes | 6d3fc56 | 2014-08-27 11:47:01 -0700 | [diff] [blame] | 872 | size_t read_guard_size; |
| 873 | GetThreadStack(tlsPtr_.pthread_self, &read_stack_base, &read_stack_size, &read_guard_size); |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 874 | |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 875 | tlsPtr_.stack_begin = reinterpret_cast<uint8_t*>(read_stack_base); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 876 | tlsPtr_.stack_size = read_stack_size; |
Elliott Hughes | 36ecb78 | 2012-04-17 16:55:45 -0700 | [diff] [blame] | 877 | |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 878 | // The minimum stack size we can cope with is the overflow reserved bytes (typically |
| 879 | // 8K) + the protected region size (4K) + another page (4K). Typically this will |
| 880 | // be 8+4+4 = 16K. The thread won't be able to do much with this stack even the GC takes |
| 881 | // between 8K and 12K. |
| 882 | uint32_t min_stack = GetStackOverflowReservedBytes(kRuntimeISA) + kStackOverflowProtectedSize |
| 883 | + 4 * KB; |
| 884 | if (read_stack_size <= min_stack) { |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 885 | // Note, as we know the stack is small, avoid operations that could use a lot of stack. |
| 886 | LogMessage::LogLineLowStack(__PRETTY_FUNCTION__, __LINE__, ERROR, |
| 887 | "Attempt to attach a thread with a too-small stack"); |
| 888 | return false; |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 889 | } |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 890 | |
Vladimir Marko | b8f2f63 | 2015-01-02 14:23:26 +0000 | [diff] [blame] | 891 | // This is included in the SIGQUIT output, but it's useful here for thread debugging. |
| 892 | VLOG(threads) << StringPrintf("Native stack is at %p (%s with %s guard)", |
| 893 | read_stack_base, |
| 894 | PrettySize(read_stack_size).c_str(), |
| 895 | PrettySize(read_guard_size).c_str()); |
| 896 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 897 | // Set stack_end_ to the bottom of the stack saving space of stack overflows |
Mathieu Chartier | 8e219ae | 2014-08-19 14:29:46 -0700 | [diff] [blame] | 898 | |
| 899 | Runtime* runtime = Runtime::Current(); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 900 | bool implicit_stack_check = !runtime->ExplicitStackOverflowChecks() && !runtime->IsAotCompiler(); |
Dave Allison | b090a18 | 2014-08-14 17:02:48 +0000 | [diff] [blame] | 901 | ResetDefaultStackEnd(); |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 902 | |
| 903 | // Install the protected region if we are doing implicit overflow checks. |
| 904 | if (implicit_stack_check) { |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 905 | // The thread might have protected region at the bottom. We need |
| 906 | // to install our own region so we need to move the limits |
| 907 | // of the stack to make room for it. |
Dave Allison | 216cf23 | 2014-08-18 15:49:51 -0700 | [diff] [blame] | 908 | |
Elliott Hughes | 6d3fc56 | 2014-08-27 11:47:01 -0700 | [diff] [blame] | 909 | tlsPtr_.stack_begin += read_guard_size + kStackOverflowProtectedSize; |
| 910 | tlsPtr_.stack_end += read_guard_size + kStackOverflowProtectedSize; |
| 911 | tlsPtr_.stack_size -= read_guard_size; |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 912 | |
| 913 | InstallImplicitProtection(); |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 914 | } |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 915 | |
| 916 | // Sanity check. |
| 917 | int stack_variable; |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 918 | CHECK_GT(&stack_variable, reinterpret_cast<void*>(tlsPtr_.stack_end)); |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 919 | |
| 920 | return true; |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 921 | } |
| 922 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 923 | void Thread::ShortDump(std::ostream& os) const { |
| 924 | os << "Thread["; |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 925 | if (GetThreadId() != 0) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 926 | // If we're in kStarting, we won't have a thin lock id or tid yet. |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 927 | os << GetThreadId() |
Mathieu Chartier | b28412e | 2015-04-24 15:28:36 -0700 | [diff] [blame] | 928 | << ",tid=" << GetTid() << ','; |
Elliott Hughes | e091855 | 2011-10-28 17:18:29 -0700 | [diff] [blame] | 929 | } |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 930 | os << GetState() |
Mathieu Chartier | b28412e | 2015-04-24 15:28:36 -0700 | [diff] [blame] | 931 | << ",Thread*=" << this |
| 932 | << ",peer=" << tlsPtr_.opeer |
| 933 | << ",\"" << (tlsPtr_.name != nullptr ? *tlsPtr_.name : "null") << "\"" |
| 934 | << "]"; |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 935 | } |
| 936 | |
Nicolas Geoffray | a73280d | 2016-02-15 13:05:16 +0000 | [diff] [blame] | 937 | void Thread::Dump(std::ostream& os, bool dump_native_stack, BacktraceMap* backtrace_map) const { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 938 | DumpState(os); |
Nicolas Geoffray | a73280d | 2016-02-15 13:05:16 +0000 | [diff] [blame] | 939 | DumpStack(os, dump_native_stack, backtrace_map); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 940 | } |
| 941 | |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 942 | mirror::String* Thread::GetThreadName(const ScopedObjectAccessAlreadyRunnable& soa) const { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 943 | ArtField* f = soa.DecodeField(WellKnownClasses::java_lang_Thread_name); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 944 | return (tlsPtr_.opeer != nullptr) ? |
| 945 | reinterpret_cast<mirror::String*>(f->GetObject(tlsPtr_.opeer)) : nullptr; |
Elliott Hughes | fc86162 | 2011-10-17 17:57:47 -0700 | [diff] [blame] | 946 | } |
| 947 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 948 | void Thread::GetThreadName(std::string& name) const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 949 | name.assign(*tlsPtr_.name); |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 950 | } |
| 951 | |
Jeff Hao | 57dac6e | 2013-08-15 16:36:24 -0700 | [diff] [blame] | 952 | uint64_t Thread::GetCpuMicroTime() const { |
Elliott Hughes | 0a18df8 | 2015-01-09 15:16:16 -0800 | [diff] [blame] | 953 | #if defined(__linux__) |
Jeff Hao | 57dac6e | 2013-08-15 16:36:24 -0700 | [diff] [blame] | 954 | clockid_t cpu_clock_id; |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 955 | pthread_getcpuclockid(tlsPtr_.pthread_self, &cpu_clock_id); |
Jeff Hao | 57dac6e | 2013-08-15 16:36:24 -0700 | [diff] [blame] | 956 | timespec now; |
| 957 | clock_gettime(cpu_clock_id, &now); |
Ian Rogers | 0f67847 | 2014-03-10 16:18:37 -0700 | [diff] [blame] | 958 | return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000) + now.tv_nsec / UINT64_C(1000); |
Elliott Hughes | 0a18df8 | 2015-01-09 15:16:16 -0800 | [diff] [blame] | 959 | #else // __APPLE__ |
Jeff Hao | 57dac6e | 2013-08-15 16:36:24 -0700 | [diff] [blame] | 960 | UNIMPLEMENTED(WARNING); |
| 961 | return -1; |
| 962 | #endif |
| 963 | } |
| 964 | |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 965 | // Attempt to rectify locks so that we dump thread list with required locks before exiting. |
| 966 | static void UnsafeLogFatalForSuspendCount(Thread* self, Thread* thread) NO_THREAD_SAFETY_ANALYSIS { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 967 | LOG(ERROR) << *thread << " suspend count already zero."; |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 968 | Locks::thread_suspend_count_lock_->Unlock(self); |
| 969 | if (!Locks::mutator_lock_->IsSharedHeld(self)) { |
| 970 | Locks::mutator_lock_->SharedTryLock(self); |
| 971 | if (!Locks::mutator_lock_->IsSharedHeld(self)) { |
| 972 | LOG(WARNING) << "Dumping thread list without holding mutator_lock_"; |
| 973 | } |
| 974 | } |
| 975 | if (!Locks::thread_list_lock_->IsExclusiveHeld(self)) { |
| 976 | Locks::thread_list_lock_->TryLock(self); |
| 977 | if (!Locks::thread_list_lock_->IsExclusiveHeld(self)) { |
| 978 | LOG(WARNING) << "Dumping thread list without holding thread_list_lock_"; |
| 979 | } |
| 980 | } |
| 981 | std::ostringstream ss; |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 982 | Runtime::Current()->GetThreadList()->Dump(ss); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 983 | LOG(FATAL) << ss.str(); |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 984 | } |
| 985 | |
Yu Li | eac4424 | 2015-06-29 10:50:03 +0800 | [diff] [blame] | 986 | bool Thread::ModifySuspendCount(Thread* self, int delta, AtomicInteger* suspend_barrier, |
| 987 | bool for_debugger) { |
Ian Rogers | 2966e13 | 2014-04-02 08:34:36 -0700 | [diff] [blame] | 988 | if (kIsDebugBuild) { |
| 989 | DCHECK(delta == -1 || delta == +1 || delta == -tls32_.debug_suspend_count) |
| 990 | << delta << " " << tls32_.debug_suspend_count << " " << this; |
| 991 | DCHECK_GE(tls32_.suspend_count, tls32_.debug_suspend_count) << this; |
| 992 | Locks::thread_suspend_count_lock_->AssertHeld(self); |
| 993 | if (this != self && !IsSuspended()) { |
| 994 | Locks::thread_list_lock_->AssertHeld(self); |
| 995 | } |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 996 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 997 | if (UNLIKELY(delta < 0 && tls32_.suspend_count <= 0)) { |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 998 | UnsafeLogFatalForSuspendCount(self, this); |
Yu Li | eac4424 | 2015-06-29 10:50:03 +0800 | [diff] [blame] | 999 | return false; |
| 1000 | } |
| 1001 | |
| 1002 | uint16_t flags = kSuspendRequest; |
| 1003 | if (delta > 0 && suspend_barrier != nullptr) { |
| 1004 | uint32_t available_barrier = kMaxSuspendBarriers; |
| 1005 | for (uint32_t i = 0; i < kMaxSuspendBarriers; ++i) { |
| 1006 | if (tlsPtr_.active_suspend_barriers[i] == nullptr) { |
| 1007 | available_barrier = i; |
| 1008 | break; |
| 1009 | } |
| 1010 | } |
| 1011 | if (available_barrier == kMaxSuspendBarriers) { |
| 1012 | // No barrier spaces available, we can't add another. |
| 1013 | return false; |
| 1014 | } |
| 1015 | tlsPtr_.active_suspend_barriers[available_barrier] = suspend_barrier; |
| 1016 | flags |= kActiveSuspendBarrier; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1017 | } |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 1018 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1019 | tls32_.suspend_count += delta; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1020 | if (for_debugger) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1021 | tls32_.debug_suspend_count += delta; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1022 | } |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 1023 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1024 | if (tls32_.suspend_count == 0) { |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 1025 | AtomicClearFlag(kSuspendRequest); |
| 1026 | } else { |
Yu Li | eac4424 | 2015-06-29 10:50:03 +0800 | [diff] [blame] | 1027 | // Two bits might be set simultaneously. |
| 1028 | tls32_.state_and_flags.as_atomic_int.FetchAndOrSequentiallyConsistent(flags); |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 1029 | TriggerSuspend(); |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 1030 | } |
Yu Li | eac4424 | 2015-06-29 10:50:03 +0800 | [diff] [blame] | 1031 | return true; |
| 1032 | } |
| 1033 | |
| 1034 | bool Thread::PassActiveSuspendBarriers(Thread* self) { |
| 1035 | // Grab the suspend_count lock and copy the current set of |
| 1036 | // barriers. Then clear the list and the flag. The ModifySuspendCount |
| 1037 | // function requires the lock so we prevent a race between setting |
| 1038 | // the kActiveSuspendBarrier flag and clearing it. |
| 1039 | AtomicInteger* pass_barriers[kMaxSuspendBarriers]; |
| 1040 | { |
| 1041 | MutexLock mu(self, *Locks::thread_suspend_count_lock_); |
| 1042 | if (!ReadFlag(kActiveSuspendBarrier)) { |
| 1043 | // quick exit test: the barriers have already been claimed - this is |
| 1044 | // possible as there may be a race to claim and it doesn't matter |
| 1045 | // who wins. |
| 1046 | // All of the callers of this function (except the SuspendAllInternal) |
| 1047 | // will first test the kActiveSuspendBarrier flag without lock. Here |
| 1048 | // double-check whether the barrier has been passed with the |
| 1049 | // suspend_count lock. |
| 1050 | return false; |
| 1051 | } |
| 1052 | |
| 1053 | for (uint32_t i = 0; i < kMaxSuspendBarriers; ++i) { |
| 1054 | pass_barriers[i] = tlsPtr_.active_suspend_barriers[i]; |
| 1055 | tlsPtr_.active_suspend_barriers[i] = nullptr; |
| 1056 | } |
| 1057 | AtomicClearFlag(kActiveSuspendBarrier); |
| 1058 | } |
| 1059 | |
| 1060 | uint32_t barrier_count = 0; |
| 1061 | for (uint32_t i = 0; i < kMaxSuspendBarriers; i++) { |
| 1062 | AtomicInteger* pending_threads = pass_barriers[i]; |
| 1063 | if (pending_threads != nullptr) { |
| 1064 | bool done = false; |
| 1065 | do { |
| 1066 | int32_t cur_val = pending_threads->LoadRelaxed(); |
| 1067 | CHECK_GT(cur_val, 0) << "Unexpected value for PassActiveSuspendBarriers(): " << cur_val; |
| 1068 | // Reduce value by 1. |
| 1069 | done = pending_threads->CompareExchangeWeakRelaxed(cur_val, cur_val - 1); |
| 1070 | #if ART_USE_FUTEXES |
| 1071 | if (done && (cur_val - 1) == 0) { // Weak CAS may fail spuriously. |
| 1072 | futex(pending_threads->Address(), FUTEX_WAKE, -1, nullptr, nullptr, 0); |
| 1073 | } |
| 1074 | #endif |
| 1075 | } while (!done); |
| 1076 | ++barrier_count; |
| 1077 | } |
| 1078 | } |
| 1079 | CHECK_GT(barrier_count, 0U); |
| 1080 | return true; |
| 1081 | } |
| 1082 | |
| 1083 | void Thread::ClearSuspendBarrier(AtomicInteger* target) { |
| 1084 | CHECK(ReadFlag(kActiveSuspendBarrier)); |
| 1085 | bool clear_flag = true; |
| 1086 | for (uint32_t i = 0; i < kMaxSuspendBarriers; ++i) { |
| 1087 | AtomicInteger* ptr = tlsPtr_.active_suspend_barriers[i]; |
| 1088 | if (ptr == target) { |
| 1089 | tlsPtr_.active_suspend_barriers[i] = nullptr; |
| 1090 | } else if (ptr != nullptr) { |
| 1091 | clear_flag = false; |
| 1092 | } |
| 1093 | } |
| 1094 | if (LIKELY(clear_flag)) { |
| 1095 | AtomicClearFlag(kActiveSuspendBarrier); |
| 1096 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1097 | } |
| 1098 | |
Mathieu Chartier | 752a0e6 | 2013-06-27 11:03:27 -0700 | [diff] [blame] | 1099 | void Thread::RunCheckpointFunction() { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1100 | Closure *checkpoints[kMaxCheckpoints]; |
| 1101 | |
| 1102 | // Grab the suspend_count lock and copy the current set of |
| 1103 | // checkpoints. Then clear the list and the flag. The RequestCheckpoint |
| 1104 | // function will also grab this lock so we prevent a race between setting |
| 1105 | // the kCheckpointRequest flag and clearing it. |
| 1106 | { |
| 1107 | MutexLock mu(this, *Locks::thread_suspend_count_lock_); |
| 1108 | for (uint32_t i = 0; i < kMaxCheckpoints; ++i) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1109 | checkpoints[i] = tlsPtr_.checkpoint_functions[i]; |
| 1110 | tlsPtr_.checkpoint_functions[i] = nullptr; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1111 | } |
| 1112 | AtomicClearFlag(kCheckpointRequest); |
| 1113 | } |
| 1114 | |
| 1115 | // Outside the lock, run all the checkpoint functions that |
| 1116 | // we collected. |
| 1117 | bool found_checkpoint = false; |
| 1118 | for (uint32_t i = 0; i < kMaxCheckpoints; ++i) { |
| 1119 | if (checkpoints[i] != nullptr) { |
Mathieu Chartier | dabdc0f | 2016-03-04 14:58:03 -0800 | [diff] [blame^] | 1120 | ScopedTrace trace("Run checkpoint function"); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1121 | checkpoints[i]->Run(this); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1122 | found_checkpoint = true; |
| 1123 | } |
| 1124 | } |
| 1125 | CHECK(found_checkpoint); |
Mathieu Chartier | 752a0e6 | 2013-06-27 11:03:27 -0700 | [diff] [blame] | 1126 | } |
| 1127 | |
Mathieu Chartier | 0e4627e | 2012-10-23 16:13:36 -0700 | [diff] [blame] | 1128 | bool Thread::RequestCheckpoint(Closure* function) { |
Chris Dearman | 59cde53 | 2013-12-04 18:53:49 -0800 | [diff] [blame] | 1129 | union StateAndFlags old_state_and_flags; |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1130 | old_state_and_flags.as_int = tls32_.state_and_flags.as_int; |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 1131 | if (old_state_and_flags.as_struct.state != kRunnable) { |
| 1132 | return false; // Fail, thread is suspended and so can't run a checkpoint. |
| 1133 | } |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1134 | |
| 1135 | uint32_t available_checkpoint = kMaxCheckpoints; |
| 1136 | for (uint32_t i = 0 ; i < kMaxCheckpoints; ++i) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1137 | if (tlsPtr_.checkpoint_functions[i] == nullptr) { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1138 | available_checkpoint = i; |
| 1139 | break; |
| 1140 | } |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 1141 | } |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1142 | if (available_checkpoint == kMaxCheckpoints) { |
| 1143 | // No checkpoint functions available, we can't run a checkpoint |
| 1144 | return false; |
| 1145 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1146 | tlsPtr_.checkpoint_functions[available_checkpoint] = function; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1147 | |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 1148 | // Checkpoint function installed now install flag bit. |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 1149 | // We must be runnable to request a checkpoint. |
Mathieu Chartier | 5f51d4b | 2013-12-03 14:24:05 -0800 | [diff] [blame] | 1150 | DCHECK_EQ(old_state_and_flags.as_struct.state, kRunnable); |
Chris Dearman | 59cde53 | 2013-12-04 18:53:49 -0800 | [diff] [blame] | 1151 | union StateAndFlags new_state_and_flags; |
| 1152 | new_state_and_flags.as_int = old_state_and_flags.as_int; |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 1153 | new_state_and_flags.as_struct.flags |= kCheckpointRequest; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1154 | bool success = tls32_.state_and_flags.as_atomic_int.CompareExchangeStrongSequentiallyConsistent( |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 1155 | old_state_and_flags.as_int, new_state_and_flags.as_int); |
Ian Rogers | 8c1b5f7 | 2014-07-09 22:02:36 -0700 | [diff] [blame] | 1156 | if (UNLIKELY(!success)) { |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 1157 | // The thread changed state before the checkpoint was installed. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1158 | CHECK_EQ(tlsPtr_.checkpoint_functions[available_checkpoint], function); |
| 1159 | tlsPtr_.checkpoint_functions[available_checkpoint] = nullptr; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1160 | } else { |
| 1161 | CHECK_EQ(ReadFlag(kCheckpointRequest), true); |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 1162 | TriggerSuspend(); |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 1163 | } |
Ian Rogers | 8c1b5f7 | 2014-07-09 22:02:36 -0700 | [diff] [blame] | 1164 | return success; |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 1165 | } |
| 1166 | |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1167 | Closure* Thread::GetFlipFunction() { |
| 1168 | Atomic<Closure*>* atomic_func = reinterpret_cast<Atomic<Closure*>*>(&tlsPtr_.flip_function); |
| 1169 | Closure* func; |
| 1170 | do { |
| 1171 | func = atomic_func->LoadRelaxed(); |
| 1172 | if (func == nullptr) { |
| 1173 | return nullptr; |
| 1174 | } |
| 1175 | } while (!atomic_func->CompareExchangeWeakSequentiallyConsistent(func, nullptr)); |
| 1176 | DCHECK(func != nullptr); |
| 1177 | return func; |
| 1178 | } |
| 1179 | |
| 1180 | void Thread::SetFlipFunction(Closure* function) { |
| 1181 | CHECK(function != nullptr); |
| 1182 | Atomic<Closure*>* atomic_func = reinterpret_cast<Atomic<Closure*>*>(&tlsPtr_.flip_function); |
| 1183 | atomic_func->StoreSequentiallyConsistent(function); |
| 1184 | } |
| 1185 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1186 | void Thread::FullSuspendCheck() { |
Mathieu Chartier | dabdc0f | 2016-03-04 14:58:03 -0800 | [diff] [blame^] | 1187 | ScopedTrace trace(__FUNCTION__); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1188 | VLOG(threads) << this << " self-suspending"; |
| 1189 | // Make thread appear suspended to other threads, release mutator_lock_. |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1190 | tls32_.suspended_at_suspend_check = true; |
Mathieu Chartier | f1d666e | 2015-09-03 16:13:34 -0700 | [diff] [blame] | 1191 | // Transition to suspended and back to runnable, re-acquire share on mutator_lock_. |
| 1192 | ScopedThreadSuspension(this, kSuspended); |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1193 | tls32_.suspended_at_suspend_check = false; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1194 | VLOG(threads) << this << " self-reviving"; |
| 1195 | } |
| 1196 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1197 | void Thread::DumpState(std::ostream& os, const Thread* thread, pid_t tid) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1198 | std::string group_name; |
| 1199 | int priority; |
| 1200 | bool is_daemon = false; |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1201 | Thread* self = Thread::Current(); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 1202 | |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1203 | // If flip_function is not null, it means we have run a checkpoint |
| 1204 | // before the thread wakes up to execute the flip function and the |
| 1205 | // thread roots haven't been forwarded. So the following access to |
| 1206 | // the roots (opeer or methods in the frames) would be bad. Run it |
| 1207 | // here. TODO: clean up. |
| 1208 | if (thread != nullptr) { |
| 1209 | ScopedObjectAccessUnchecked soa(self); |
| 1210 | Thread* this_thread = const_cast<Thread*>(thread); |
| 1211 | Closure* flip_func = this_thread->GetFlipFunction(); |
| 1212 | if (flip_func != nullptr) { |
| 1213 | flip_func->Run(this_thread); |
| 1214 | } |
| 1215 | } |
| 1216 | |
Mathieu Chartier | c7a966d | 2014-04-10 18:06:32 -0700 | [diff] [blame] | 1217 | // Don't do this if we are aborting since the GC may have all the threads suspended. This will |
| 1218 | // cause ScopedObjectAccessUnchecked to deadlock. |
Nicolas Geoffray | db97871 | 2014-12-09 13:33:38 +0000 | [diff] [blame] | 1219 | if (gAborting == 0 && self != nullptr && thread != nullptr && thread->tlsPtr_.opeer != nullptr) { |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1220 | ScopedObjectAccessUnchecked soa(self); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1221 | priority = soa.DecodeField(WellKnownClasses::java_lang_Thread_priority) |
| 1222 | ->GetInt(thread->tlsPtr_.opeer); |
| 1223 | is_daemon = soa.DecodeField(WellKnownClasses::java_lang_Thread_daemon) |
| 1224 | ->GetBoolean(thread->tlsPtr_.opeer); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1225 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1226 | mirror::Object* thread_group = |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1227 | soa.DecodeField(WellKnownClasses::java_lang_Thread_group)->GetObject(thread->tlsPtr_.opeer); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1228 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1229 | if (thread_group != nullptr) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 1230 | ArtField* group_name_field = |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1231 | soa.DecodeField(WellKnownClasses::java_lang_ThreadGroup_name); |
| 1232 | mirror::String* group_name_string = |
| 1233 | reinterpret_cast<mirror::String*>(group_name_field->GetObject(thread_group)); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1234 | group_name = (group_name_string != nullptr) ? group_name_string->ToModifiedUtf8() : "<null>"; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1235 | } |
| 1236 | } else { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1237 | priority = GetNativePriority(); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 1238 | } |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1239 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1240 | std::string scheduler_group_name(GetSchedulerGroupName(tid)); |
Elliott Hughes | 1bac54f | 2012-03-16 12:48:31 -0700 | [diff] [blame] | 1241 | if (scheduler_group_name.empty()) { |
| 1242 | scheduler_group_name = "default"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1243 | } |
| 1244 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1245 | if (thread != nullptr) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1246 | os << '"' << *thread->tlsPtr_.name << '"'; |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1247 | if (is_daemon) { |
| 1248 | os << " daemon"; |
| 1249 | } |
| 1250 | os << " prio=" << priority |
Ian Rogers | d9c4fc9 | 2013-10-01 19:45:43 -0700 | [diff] [blame] | 1251 | << " tid=" << thread->GetThreadId() |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 1252 | << " " << thread->GetState(); |
| 1253 | if (thread->IsStillStarting()) { |
| 1254 | os << " (still starting up)"; |
| 1255 | } |
| 1256 | os << "\n"; |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1257 | } else { |
Elliott Hughes | 289be85 | 2012-06-12 13:57:20 -0700 | [diff] [blame] | 1258 | os << '"' << ::art::GetThreadName(tid) << '"' |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1259 | << " prio=" << priority |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1260 | << " (not attached)\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1261 | } |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1262 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1263 | if (thread != nullptr) { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1264 | MutexLock mu(self, *Locks::thread_suspend_count_lock_); |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1265 | os << " | group=\"" << group_name << "\"" |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1266 | << " sCount=" << thread->tls32_.suspend_count |
| 1267 | << " dsCount=" << thread->tls32_.debug_suspend_count |
| 1268 | << " obj=" << reinterpret_cast<void*>(thread->tlsPtr_.opeer) |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1269 | << " self=" << reinterpret_cast<const void*>(thread) << "\n"; |
| 1270 | } |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 1271 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1272 | os << " | sysTid=" << tid |
| 1273 | << " nice=" << getpriority(PRIO_PROCESS, tid) |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 1274 | << " cgrp=" << scheduler_group_name; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1275 | if (thread != nullptr) { |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 1276 | int policy; |
| 1277 | sched_param sp; |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1278 | CHECK_PTHREAD_CALL(pthread_getschedparam, (thread->tlsPtr_.pthread_self, &policy, &sp), |
| 1279 | __FUNCTION__); |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 1280 | os << " sched=" << policy << "/" << sp.sched_priority |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1281 | << " handle=" << reinterpret_cast<void*>(thread->tlsPtr_.pthread_self); |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 1282 | } |
| 1283 | os << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1284 | |
| 1285 | // Grab the scheduler stats for this thread. |
| 1286 | std::string scheduler_stats; |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1287 | if (ReadFileToString(StringPrintf("/proc/self/task/%d/schedstat", tid), &scheduler_stats)) { |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 1288 | scheduler_stats.resize(scheduler_stats.size() - 1); // Lose the trailing '\n'. |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1289 | } else { |
| 1290 | scheduler_stats = "0 0 0"; |
| 1291 | } |
| 1292 | |
Elliott Hughes | ba0b9c5 | 2012-09-20 11:25:12 -0700 | [diff] [blame] | 1293 | char native_thread_state = '?'; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1294 | int utime = 0; |
| 1295 | int stime = 0; |
| 1296 | int task_cpu = 0; |
Brian Carlstrom | 2921201 | 2013-09-12 22:18:30 -0700 | [diff] [blame] | 1297 | GetTaskStats(tid, &native_thread_state, &utime, &stime, &task_cpu); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1298 | |
Elliott Hughes | ba0b9c5 | 2012-09-20 11:25:12 -0700 | [diff] [blame] | 1299 | os << " | state=" << native_thread_state |
| 1300 | << " schedstat=( " << scheduler_stats << " )" |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1301 | << " utm=" << utime |
| 1302 | << " stm=" << stime |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1303 | << " core=" << task_cpu |
| 1304 | << " HZ=" << sysconf(_SC_CLK_TCK) << "\n"; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1305 | if (thread != nullptr) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1306 | os << " | stack=" << reinterpret_cast<void*>(thread->tlsPtr_.stack_begin) << "-" |
| 1307 | << reinterpret_cast<void*>(thread->tlsPtr_.stack_end) << " stackSize=" |
| 1308 | << PrettySize(thread->tlsPtr_.stack_size) << "\n"; |
Mathieu Chartier | 9db911e | 2014-06-04 11:23:58 -0700 | [diff] [blame] | 1309 | // Dump the held mutexes. |
| 1310 | os << " | held mutexes="; |
| 1311 | for (size_t i = 0; i < kLockLevelCount; ++i) { |
| 1312 | if (i != kMonitorLock) { |
| 1313 | BaseMutex* mutex = thread->GetHeldMutex(static_cast<LockLevel>(i)); |
| 1314 | if (mutex != nullptr) { |
| 1315 | os << " \"" << mutex->GetName() << "\""; |
| 1316 | if (mutex->IsReaderWriterMutex()) { |
| 1317 | ReaderWriterMutex* rw_mutex = down_cast<ReaderWriterMutex*>(mutex); |
Ian Rogers | a9d8c4c | 2014-07-07 21:38:36 -0700 | [diff] [blame] | 1318 | if (rw_mutex->GetExclusiveOwnerTid() == static_cast<uint64_t>(tid)) { |
Mathieu Chartier | 9db911e | 2014-06-04 11:23:58 -0700 | [diff] [blame] | 1319 | os << "(exclusive held)"; |
| 1320 | } else { |
Mathieu Chartier | 9db911e | 2014-06-04 11:23:58 -0700 | [diff] [blame] | 1321 | os << "(shared held)"; |
| 1322 | } |
| 1323 | } |
| 1324 | } |
| 1325 | } |
| 1326 | } |
| 1327 | os << "\n"; |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 1328 | } |
| 1329 | } |
| 1330 | |
| 1331 | void Thread::DumpState(std::ostream& os) const { |
| 1332 | Thread::DumpState(os, this, GetTid()); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 1333 | } |
| 1334 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1335 | struct StackDumpVisitor : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 1336 | StackDumpVisitor(std::ostream& os_in, Thread* thread_in, Context* context, bool can_allocate_in) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1337 | SHARED_REQUIRES(Locks::mutator_lock_) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 1338 | : StackVisitor(thread_in, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| 1339 | os(os_in), |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 1340 | can_allocate(can_allocate_in), |
| 1341 | last_method(nullptr), |
| 1342 | last_line_number(0), |
| 1343 | repetition_count(0), |
| 1344 | frame_count(0) {} |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1345 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1346 | virtual ~StackDumpVisitor() { |
Elliott Hughes | e85d2e9 | 2012-05-01 14:02:10 -0700 | [diff] [blame] | 1347 | if (frame_count == 0) { |
| 1348 | os << " (no managed stack frames)\n"; |
| 1349 | } |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1350 | } |
| 1351 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1352 | bool VisitFrame() SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1353 | ArtMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1354 | if (m->IsRuntimeMethod()) { |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1355 | return true; |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 1356 | } |
Mathieu Chartier | ef76c3f | 2015-07-17 18:46:32 -0700 | [diff] [blame] | 1357 | m = m->GetInterfaceMethodIfProxy(sizeof(void*)); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1358 | const int kMaxRepetition = 3; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1359 | mirror::Class* c = m->GetDeclaringClass(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1360 | mirror::DexCache* dex_cache = c->GetDexCache(); |
Ian Rogers | b861dc0 | 2011-11-14 17:00:05 -0800 | [diff] [blame] | 1361 | int line_number = -1; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1362 | if (dex_cache != nullptr) { // be tolerant of bad input |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 1363 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
Mathieu Chartier | c751fdc | 2014-03-30 15:25:44 -0700 | [diff] [blame] | 1364 | line_number = dex_file.GetLineNumFromPC(m, GetDexPc(false)); |
Ian Rogers | b861dc0 | 2011-11-14 17:00:05 -0800 | [diff] [blame] | 1365 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1366 | if (line_number == last_line_number && last_method == m) { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1367 | ++repetition_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1368 | } else { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1369 | if (repetition_count >= kMaxRepetition) { |
| 1370 | os << " ... repeated " << (repetition_count - kMaxRepetition) << " times\n"; |
| 1371 | } |
| 1372 | repetition_count = 0; |
| 1373 | last_line_number = line_number; |
| 1374 | last_method = m; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1375 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1376 | if (repetition_count < kMaxRepetition) { |
| 1377 | os << " at " << PrettyMethod(m, false); |
| 1378 | if (m->IsNative()) { |
| 1379 | os << "(Native method)"; |
| 1380 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 1381 | const char* source_file(m->GetDeclaringClassSourceFile()); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1382 | os << "(" << (source_file != nullptr ? source_file : "unavailable") |
Brian Carlstrom | 2e450bf | 2013-09-06 15:39:46 -0700 | [diff] [blame] | 1383 | << ":" << line_number << ")"; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1384 | } |
| 1385 | os << "\n"; |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1386 | if (frame_count == 0) { |
Sebastien Hertz | 26f7286 | 2015-09-15 09:52:07 +0200 | [diff] [blame] | 1387 | Monitor::DescribeWait(os, GetThread()); |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1388 | } |
| 1389 | if (can_allocate) { |
Andreas Gampe | 956a522 | 2014-08-16 13:41:10 -0700 | [diff] [blame] | 1390 | // Visit locks, but do not abort on errors. This would trigger a nested abort. |
| 1391 | Monitor::VisitLocks(this, DumpLockedObject, &os, false); |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1392 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1393 | } |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 1394 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1395 | ++frame_count; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1396 | return true; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1397 | } |
Elliott Hughes | 4993bbc | 2013-01-10 15:41:25 -0800 | [diff] [blame] | 1398 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1399 | static void DumpLockedObject(mirror::Object* o, void* context) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1400 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Elliott Hughes | 4993bbc | 2013-01-10 15:41:25 -0800 | [diff] [blame] | 1401 | std::ostream& os = *reinterpret_cast<std::ostream*>(context); |
Ian Rogers | d803bc7 | 2014-04-01 15:33:03 -0700 | [diff] [blame] | 1402 | os << " - locked "; |
| 1403 | if (o == nullptr) { |
| 1404 | os << "an unknown object"; |
| 1405 | } else { |
Mathieu Chartier | 4d7f61d | 2014-04-17 14:43:39 -0700 | [diff] [blame] | 1406 | if ((o->GetLockWord(false).GetState() == LockWord::kThinLocked) && |
Ian Rogers | d803bc7 | 2014-04-01 15:33:03 -0700 | [diff] [blame] | 1407 | Locks::mutator_lock_->IsExclusiveHeld(Thread::Current())) { |
| 1408 | // Getting the identity hashcode here would result in lock inflation and suspension of the |
| 1409 | // current thread, which isn't safe if this is the only runnable thread. |
| 1410 | os << StringPrintf("<@addr=0x%" PRIxPTR "> (a %s)", reinterpret_cast<intptr_t>(o), |
| 1411 | PrettyTypeOf(o).c_str()); |
| 1412 | } else { |
Mathieu Chartier | e6a8eec | 2015-01-06 14:17:57 -0800 | [diff] [blame] | 1413 | // IdentityHashCode can cause thread suspension, which would invalidate o if it moved. So |
| 1414 | // we get the pretty type beofre we call IdentityHashCode. |
| 1415 | const std::string pretty_type(PrettyTypeOf(o)); |
| 1416 | os << StringPrintf("<0x%08x> (a %s)", o->IdentityHashCode(), pretty_type.c_str()); |
Ian Rogers | d803bc7 | 2014-04-01 15:33:03 -0700 | [diff] [blame] | 1417 | } |
| 1418 | } |
| 1419 | os << "\n"; |
Elliott Hughes | 4993bbc | 2013-01-10 15:41:25 -0800 | [diff] [blame] | 1420 | } |
| 1421 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1422 | std::ostream& os; |
Ian Rogers | 0878d65 | 2013-04-18 17:38:35 -0700 | [diff] [blame] | 1423 | const bool can_allocate; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1424 | ArtMethod* last_method; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1425 | int last_line_number; |
| 1426 | int repetition_count; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 1427 | int frame_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1428 | }; |
| 1429 | |
Ian Rogers | 33e9566 | 2013-05-20 20:29:14 -0700 | [diff] [blame] | 1430 | static bool ShouldShowNativeStack(const Thread* thread) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1431 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Elliott Hughes | aef701d | 2013-04-05 18:15:40 -0700 | [diff] [blame] | 1432 | ThreadState state = thread->GetState(); |
| 1433 | |
| 1434 | // In native code somewhere in the VM (one of the kWaitingFor* states)? That's interesting. |
| 1435 | if (state > kWaiting && state < kStarting) { |
| 1436 | return true; |
| 1437 | } |
| 1438 | |
| 1439 | // In an Object.wait variant or Thread.sleep? That's not interesting. |
| 1440 | if (state == kTimedWaiting || state == kSleeping || state == kWaiting) { |
| 1441 | return false; |
| 1442 | } |
| 1443 | |
Christopher Ferris | 2366f4e | 2014-09-19 17:23:59 -0700 | [diff] [blame] | 1444 | // Threads with no managed stack frames should be shown. |
| 1445 | const ManagedStack* managed_stack = thread->GetManagedStack(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 1446 | if (managed_stack == nullptr || (managed_stack->GetTopQuickFrame() == nullptr && |
| 1447 | managed_stack->GetTopShadowFrame() == nullptr)) { |
Christopher Ferris | 2366f4e | 2014-09-19 17:23:59 -0700 | [diff] [blame] | 1448 | return true; |
| 1449 | } |
| 1450 | |
Elliott Hughes | aef701d | 2013-04-05 18:15:40 -0700 | [diff] [blame] | 1451 | // In some other native method? That's interesting. |
| 1452 | // We don't just check kNative because native methods will be in state kSuspended if they're |
| 1453 | // calling back into the VM, or kBlocked if they're blocked on a monitor, or one of the |
| 1454 | // thread-startup states if it's early enough in their life cycle (http://b/7432159). |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1455 | ArtMethod* current_method = thread->GetCurrentMethod(nullptr); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1456 | return current_method != nullptr && current_method->IsNative(); |
Elliott Hughes | aef701d | 2013-04-05 18:15:40 -0700 | [diff] [blame] | 1457 | } |
| 1458 | |
Mathieu Chartier | c751fdc | 2014-03-30 15:25:44 -0700 | [diff] [blame] | 1459 | void Thread::DumpJavaStack(std::ostream& os) const { |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1460 | // If flip_function is not null, it means we have run a checkpoint |
| 1461 | // before the thread wakes up to execute the flip function and the |
| 1462 | // thread roots haven't been forwarded. So the following access to |
| 1463 | // the roots (locks or methods in the frames) would be bad. Run it |
| 1464 | // here. TODO: clean up. |
| 1465 | { |
| 1466 | Thread* this_thread = const_cast<Thread*>(this); |
| 1467 | Closure* flip_func = this_thread->GetFlipFunction(); |
| 1468 | if (flip_func != nullptr) { |
| 1469 | flip_func->Run(this_thread); |
| 1470 | } |
| 1471 | } |
| 1472 | |
Andreas Gampe | 986c6fb | 2014-10-02 21:00:06 -0700 | [diff] [blame] | 1473 | // Dumping the Java stack involves the verifier for locks. The verifier operates under the |
| 1474 | // assumption that there is no exception pending on entry. Thus, stash any pending exception. |
Mathieu Chartier | bef89c9 | 2015-01-09 09:46:49 -0800 | [diff] [blame] | 1475 | // Thread::Current() instead of this in case a thread is dumping the stack of another suspended |
| 1476 | // thread. |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 1477 | StackHandleScope<1> scope(Thread::Current()); |
Andreas Gampe | 986c6fb | 2014-10-02 21:00:06 -0700 | [diff] [blame] | 1478 | Handle<mirror::Throwable> exc; |
Andreas Gampe | 986c6fb | 2014-10-02 21:00:06 -0700 | [diff] [blame] | 1479 | bool have_exception = false; |
| 1480 | if (IsExceptionPending()) { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 1481 | exc = scope.NewHandle(GetException()); |
Andreas Gampe | 986c6fb | 2014-10-02 21:00:06 -0700 | [diff] [blame] | 1482 | const_cast<Thread*>(this)->ClearException(); |
| 1483 | have_exception = true; |
| 1484 | } |
| 1485 | |
Ian Rogers | 700a402 | 2014-05-19 16:49:03 -0700 | [diff] [blame] | 1486 | std::unique_ptr<Context> context(Context::Create()); |
Mathieu Chartier | c751fdc | 2014-03-30 15:25:44 -0700 | [diff] [blame] | 1487 | StackDumpVisitor dumper(os, const_cast<Thread*>(this), context.get(), |
| 1488 | !tls32_.throwing_OutOfMemoryError); |
| 1489 | dumper.WalkStack(); |
Andreas Gampe | 986c6fb | 2014-10-02 21:00:06 -0700 | [diff] [blame] | 1490 | |
| 1491 | if (have_exception) { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 1492 | const_cast<Thread*>(this)->SetException(exc.Get()); |
Andreas Gampe | 986c6fb | 2014-10-02 21:00:06 -0700 | [diff] [blame] | 1493 | } |
Mathieu Chartier | c751fdc | 2014-03-30 15:25:44 -0700 | [diff] [blame] | 1494 | } |
| 1495 | |
Nicolas Geoffray | a73280d | 2016-02-15 13:05:16 +0000 | [diff] [blame] | 1496 | void Thread::DumpStack(std::ostream& os, |
| 1497 | bool dump_native_stack, |
| 1498 | BacktraceMap* backtrace_map) const { |
Jeff Hao | ed1790e | 2013-04-12 09:58:14 -0700 | [diff] [blame] | 1499 | // TODO: we call this code when dying but may not have suspended the thread ourself. The |
| 1500 | // IsSuspended check is therefore racy with the use for dumping (normally we inhibit |
| 1501 | // the race with the thread_suspend_count_lock_). |
Ian Rogers | eef2e54 | 2014-06-24 22:48:01 -0700 | [diff] [blame] | 1502 | bool dump_for_abort = (gAborting > 0); |
| 1503 | bool safe_to_dump = (this == Thread::Current() || IsSuspended()); |
| 1504 | if (!kIsDebugBuild) { |
| 1505 | // We always want to dump the stack for an abort, however, there is no point dumping another |
| 1506 | // thread's stack in debug builds where we'll hit the not suspended check in the stack walk. |
| 1507 | safe_to_dump = (safe_to_dump || dump_for_abort); |
| 1508 | } |
| 1509 | if (safe_to_dump) { |
Ian Rogers | f08e473 | 2013-04-09 09:45:49 -0700 | [diff] [blame] | 1510 | // If we're currently in native code, dump that stack before dumping the managed stack. |
Nicolas Geoffray | a73280d | 2016-02-15 13:05:16 +0000 | [diff] [blame] | 1511 | if (dump_native_stack && (dump_for_abort || ShouldShowNativeStack(this))) { |
Ian Rogers | f08e473 | 2013-04-09 09:45:49 -0700 | [diff] [blame] | 1512 | DumpKernelStack(os, GetTid(), " kernel: ", false); |
Nicolas Geoffray | 6bc4374 | 2015-10-12 18:11:10 +0100 | [diff] [blame] | 1513 | ArtMethod* method = GetCurrentMethod(nullptr, !dump_for_abort); |
Christopher Ferris | 6cff48f | 2014-01-26 21:36:13 -0800 | [diff] [blame] | 1514 | DumpNativeStack(os, GetTid(), backtrace_map, " native: ", method); |
Ian Rogers | f08e473 | 2013-04-09 09:45:49 -0700 | [diff] [blame] | 1515 | } |
Mathieu Chartier | c751fdc | 2014-03-30 15:25:44 -0700 | [diff] [blame] | 1516 | DumpJavaStack(os); |
Ian Rogers | f08e473 | 2013-04-09 09:45:49 -0700 | [diff] [blame] | 1517 | } else { |
| 1518 | os << "Not able to dump stack of thread that isn't suspended"; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 1519 | } |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 1520 | } |
| 1521 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 1522 | void Thread::ThreadExitCallback(void* arg) { |
| 1523 | Thread* self = reinterpret_cast<Thread*>(arg); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1524 | if (self->tls32_.thread_exit_check_count == 0) { |
| 1525 | LOG(WARNING) << "Native thread exiting without having called DetachCurrentThread (maybe it's " |
| 1526 | "going to use a pthread_key_create destructor?): " << *self; |
Ian Rogers | 0878d65 | 2013-04-18 17:38:35 -0700 | [diff] [blame] | 1527 | CHECK(is_started_); |
Andreas Gampe | 4382f1e | 2015-08-05 01:08:53 +0000 | [diff] [blame] | 1528 | #ifdef __ANDROID__ |
| 1529 | __get_tls()[TLS_SLOT_ART_THREAD_SELF] = self; |
| 1530 | #else |
Elliott Hughes | 6a607ad | 2012-07-13 20:40:00 -0700 | [diff] [blame] | 1531 | CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, self), "reattach self"); |
Andreas Gampe | 4382f1e | 2015-08-05 01:08:53 +0000 | [diff] [blame] | 1532 | #endif |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1533 | self->tls32_.thread_exit_check_count = 1; |
Elliott Hughes | 6a607ad | 2012-07-13 20:40:00 -0700 | [diff] [blame] | 1534 | } else { |
| 1535 | LOG(FATAL) << "Native thread exited without calling DetachCurrentThread: " << *self; |
| 1536 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 1537 | } |
| 1538 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 1539 | void Thread::Startup() { |
Ian Rogers | 0878d65 | 2013-04-18 17:38:35 -0700 | [diff] [blame] | 1540 | CHECK(!is_started_); |
| 1541 | is_started_ = true; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1542 | { |
Brian Carlstrom | 6d69f59 | 2013-07-16 17:18:16 -0700 | [diff] [blame] | 1543 | // MutexLock to keep annotalysis happy. |
| 1544 | // |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 1545 | // Note we use null for the thread because Thread::Current can |
Brian Carlstrom | 6d69f59 | 2013-07-16 17:18:16 -0700 | [diff] [blame] | 1546 | // return garbage since (is_started_ == true) and |
| 1547 | // Thread::pthread_key_self_ is not yet initialized. |
| 1548 | // This was seen on glibc. |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1549 | MutexLock mu(nullptr, *Locks::thread_suspend_count_lock_); |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1550 | resume_cond_ = new ConditionVariable("Thread resumption condition variable", |
| 1551 | *Locks::thread_suspend_count_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1552 | } |
| 1553 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 1554 | // Allocate a TLS slot. |
Ian Rogers | f4d4da1 | 2014-11-11 16:10:33 -0800 | [diff] [blame] | 1555 | CHECK_PTHREAD_CALL(pthread_key_create, (&Thread::pthread_key_self_, Thread::ThreadExitCallback), |
| 1556 | "self key"); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 1557 | |
| 1558 | // Double-check the TLS slot allocation. |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1559 | if (pthread_getspecific(pthread_key_self_) != nullptr) { |
| 1560 | LOG(FATAL) << "Newly-created pthread TLS slot is not nullptr"; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 1561 | } |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 1562 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 1563 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 1564 | void Thread::FinishStartup() { |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 1565 | Runtime* runtime = Runtime::Current(); |
| 1566 | CHECK(runtime->IsStarted()); |
Brian Carlstrom | b82b687 | 2011-10-26 17:18:07 -0700 | [diff] [blame] | 1567 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1568 | // Finish attaching the main thread. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1569 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 1570 | Thread::Current()->CreatePeer("main", false, runtime->GetMainThreadGroup()); |
Andreas Gampe | 4b1d4ec | 2015-10-01 16:47:26 -0700 | [diff] [blame] | 1571 | Thread::Current()->AssertNoPendingException(); |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 1572 | |
Elliott Hughes | af8d15a | 2012-05-29 09:12:18 -0700 | [diff] [blame] | 1573 | Runtime::Current()->GetClassLinker()->RunRootClinits(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 1574 | } |
| 1575 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 1576 | void Thread::Shutdown() { |
Ian Rogers | 0878d65 | 2013-04-18 17:38:35 -0700 | [diff] [blame] | 1577 | CHECK(is_started_); |
| 1578 | is_started_ = false; |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 1579 | CHECK_PTHREAD_CALL(pthread_key_delete, (Thread::pthread_key_self_), "self key"); |
Ian Rogers | 33e9566 | 2013-05-20 20:29:14 -0700 | [diff] [blame] | 1580 | MutexLock mu(Thread::Current(), *Locks::thread_suspend_count_lock_); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1581 | if (resume_cond_ != nullptr) { |
Ian Rogers | 0878d65 | 2013-04-18 17:38:35 -0700 | [diff] [blame] | 1582 | delete resume_cond_; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1583 | resume_cond_ = nullptr; |
Ian Rogers | 0878d65 | 2013-04-18 17:38:35 -0700 | [diff] [blame] | 1584 | } |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 1585 | } |
| 1586 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1587 | Thread::Thread(bool daemon) : tls32_(daemon), wait_monitor_(nullptr), interrupted_(false) { |
| 1588 | wait_mutex_ = new Mutex("a thread wait mutex"); |
| 1589 | wait_cond_ = new ConditionVariable("a thread wait condition variable", *wait_mutex_); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1590 | tlsPtr_.instrumentation_stack = new std::deque<instrumentation::InstrumentationStackFrame>; |
| 1591 | tlsPtr_.name = new std::string(kThreadNameDuringStartup); |
Dave Allison | 8ce6b90 | 2014-08-26 11:07:58 -0700 | [diff] [blame] | 1592 | tlsPtr_.nested_signal_state = static_cast<jmp_buf*>(malloc(sizeof(jmp_buf))); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1593 | |
Roland Levillain | 33d6903 | 2015-06-18 18:20:59 +0100 | [diff] [blame] | 1594 | static_assert((sizeof(Thread) % 4) == 0U, |
| 1595 | "art::Thread has a size which is not a multiple of 4."); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1596 | tls32_.state_and_flags.as_struct.flags = 0; |
| 1597 | tls32_.state_and_flags.as_struct.state = kNative; |
| 1598 | memset(&tlsPtr_.held_mutexes[0], 0, sizeof(tlsPtr_.held_mutexes)); |
Mathieu Chartier | 0651d41 | 2014-04-29 14:37:57 -0700 | [diff] [blame] | 1599 | std::fill(tlsPtr_.rosalloc_runs, |
Hiroshi Yamauchi | 7ed9c56 | 2016-02-02 15:22:09 -0800 | [diff] [blame] | 1600 | tlsPtr_.rosalloc_runs + kNumRosAllocThreadLocalSizeBracketsInThread, |
Mathieu Chartier | 73d1e17 | 2014-04-11 17:53:48 -0700 | [diff] [blame] | 1601 | gc::allocator::RosAlloc::GetDedicatedFullRun()); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1602 | for (uint32_t i = 0; i < kMaxCheckpoints; ++i) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1603 | tlsPtr_.checkpoint_functions[i] = nullptr; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1604 | } |
Yu Li | eac4424 | 2015-06-29 10:50:03 +0800 | [diff] [blame] | 1605 | for (uint32_t i = 0; i < kMaxSuspendBarriers; ++i) { |
| 1606 | tlsPtr_.active_suspend_barriers[i] = nullptr; |
| 1607 | } |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1608 | tlsPtr_.flip_function = nullptr; |
Hiroshi Yamauchi | 0b71357 | 2015-06-16 18:29:23 -0700 | [diff] [blame] | 1609 | tlsPtr_.thread_local_mark_stack = nullptr; |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1610 | tls32_.suspended_at_suspend_check = false; |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 1611 | } |
| 1612 | |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 1613 | bool Thread::IsStillStarting() const { |
| 1614 | // You might think you can check whether the state is kStarting, but for much of thread startup, |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 1615 | // the thread is in kNative; it might also be in kVmWait. |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 1616 | // You might think you can check whether the peer is null, but the peer is actually created and |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 1617 | // assigned fairly early on, and needs to be. |
| 1618 | // It turns out that the last thing to change is the thread name; that's a good proxy for "has |
| 1619 | // this thread _ever_ entered kRunnable". |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1620 | return (tlsPtr_.jpeer == nullptr && tlsPtr_.opeer == nullptr) || |
| 1621 | (*tlsPtr_.name == kThreadNameDuringStartup); |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 1622 | } |
| 1623 | |
Andreas Gampe | d9efea6 | 2014-07-21 22:56:08 -0700 | [diff] [blame] | 1624 | void Thread::AssertPendingException() const { |
Mathieu Chartier | a61894d | 2015-04-23 16:32:54 -0700 | [diff] [blame] | 1625 | CHECK(IsExceptionPending()) << "Pending exception expected."; |
| 1626 | } |
| 1627 | |
| 1628 | void Thread::AssertPendingOOMException() const { |
| 1629 | AssertPendingException(); |
| 1630 | auto* e = GetException(); |
| 1631 | CHECK_EQ(e->GetClass(), DecodeJObject(WellKnownClasses::java_lang_OutOfMemoryError)->AsClass()) |
| 1632 | << e->Dump(); |
Andreas Gampe | d9efea6 | 2014-07-21 22:56:08 -0700 | [diff] [blame] | 1633 | } |
| 1634 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1635 | void Thread::AssertNoPendingException() const { |
| 1636 | if (UNLIKELY(IsExceptionPending())) { |
| 1637 | ScopedObjectAccess soa(Thread::Current()); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 1638 | mirror::Throwable* exception = GetException(); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1639 | LOG(FATAL) << "No pending exception expected: " << exception->Dump(); |
| 1640 | } |
| 1641 | } |
| 1642 | |
Mathieu Chartier | 8d7672e | 2014-02-25 10:57:16 -0800 | [diff] [blame] | 1643 | void Thread::AssertNoPendingExceptionForNewException(const char* msg) const { |
| 1644 | if (UNLIKELY(IsExceptionPending())) { |
| 1645 | ScopedObjectAccess soa(Thread::Current()); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 1646 | mirror::Throwable* exception = GetException(); |
Ian Rogers | c114b5f | 2014-07-21 08:55:01 -0700 | [diff] [blame] | 1647 | LOG(FATAL) << "Throwing new exception '" << msg << "' with unexpected pending exception: " |
Mathieu Chartier | 8d7672e | 2014-02-25 10:57:16 -0800 | [diff] [blame] | 1648 | << exception->Dump(); |
| 1649 | } |
| 1650 | } |
| 1651 | |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1652 | class MonitorExitVisitor : public SingleRootVisitor { |
| 1653 | public: |
| 1654 | explicit MonitorExitVisitor(Thread* self) : self_(self) { } |
| 1655 | |
| 1656 | // NO_THREAD_SAFETY_ANALYSIS due to MonitorExit. |
| 1657 | void VisitRoot(mirror::Object* entered_monitor, const RootInfo& info ATTRIBUTE_UNUSED) |
| 1658 | OVERRIDE NO_THREAD_SAFETY_ANALYSIS { |
| 1659 | if (self_->HoldsLock(entered_monitor)) { |
| 1660 | LOG(WARNING) << "Calling MonitorExit on object " |
| 1661 | << entered_monitor << " (" << PrettyTypeOf(entered_monitor) << ")" |
| 1662 | << " left locked by native thread " |
| 1663 | << *Thread::Current() << " which is detaching"; |
| 1664 | entered_monitor->MonitorExit(self_); |
| 1665 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 1666 | } |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1667 | |
| 1668 | private: |
| 1669 | Thread* const self_; |
| 1670 | }; |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1671 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 1672 | void Thread::Destroy() { |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1673 | Thread* self = this; |
| 1674 | DCHECK_EQ(self, Thread::Current()); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1675 | |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1676 | if (tlsPtr_.jni_env != nullptr) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1677 | { |
| 1678 | ScopedObjectAccess soa(self); |
| 1679 | MonitorExitVisitor visitor(self); |
| 1680 | // On thread detach, all monitors entered with JNI MonitorEnter are automatically exited. |
| 1681 | tlsPtr_.jni_env->monitors.VisitRoots(&visitor, RootInfo(kRootVMInternal)); |
| 1682 | } |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1683 | // Release locally held global references which releasing may require the mutator lock. |
| 1684 | if (tlsPtr_.jpeer != nullptr) { |
| 1685 | // If pthread_create fails we don't have a jni env here. |
| 1686 | tlsPtr_.jni_env->DeleteGlobalRef(tlsPtr_.jpeer); |
| 1687 | tlsPtr_.jpeer = nullptr; |
| 1688 | } |
| 1689 | if (tlsPtr_.class_loader_override != nullptr) { |
| 1690 | tlsPtr_.jni_env->DeleteGlobalRef(tlsPtr_.class_loader_override); |
| 1691 | tlsPtr_.class_loader_override = nullptr; |
| 1692 | } |
| 1693 | } |
| 1694 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1695 | if (tlsPtr_.opeer != nullptr) { |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1696 | ScopedObjectAccess soa(self); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1697 | // We may need to call user-supplied managed code, do this before final clean-up. |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1698 | HandleUncaughtExceptions(soa); |
| 1699 | RemoveFromThreadGroup(soa); |
Elliott Hughes | 534da07 | 2012-03-27 15:17:42 -0700 | [diff] [blame] | 1700 | |
Anwar Ghuloum | 3c50a4b | 2013-06-21 13:05:23 -0700 | [diff] [blame] | 1701 | // this.nativePeer = 0; |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1702 | if (Runtime::Current()->IsActiveTransaction()) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1703 | soa.DecodeField(WellKnownClasses::java_lang_Thread_nativePeer) |
| 1704 | ->SetLong<true>(tlsPtr_.opeer, 0); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1705 | } else { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1706 | soa.DecodeField(WellKnownClasses::java_lang_Thread_nativePeer) |
| 1707 | ->SetLong<false>(tlsPtr_.opeer, 0); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1708 | } |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1709 | Dbg::PostThreadDeath(self); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1710 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1711 | // Thread.join() is implemented as an Object.wait() on the Thread.lock object. Signal anyone |
| 1712 | // who is waiting. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1713 | mirror::Object* lock = |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1714 | soa.DecodeField(WellKnownClasses::java_lang_Thread_lock)->GetObject(tlsPtr_.opeer); |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 1715 | // (This conditional is only needed for tests, where Thread.lock won't have been set.) |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1716 | if (lock != nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1717 | StackHandleScope<1> hs(self); |
| 1718 | Handle<mirror::Object> h_obj(hs.NewHandle(lock)); |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame] | 1719 | ObjectLock<mirror::Object> locker(self, h_obj); |
Yevgeny Rouban | 63e8a68 | 2014-04-16 18:26:09 +0700 | [diff] [blame] | 1720 | locker.NotifyAll(); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1721 | } |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1722 | tlsPtr_.opeer = nullptr; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1723 | } |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1724 | |
Hiroshi Yamauchi | a1b94c6 | 2014-12-17 15:49:56 -0800 | [diff] [blame] | 1725 | { |
| 1726 | ScopedObjectAccess soa(self); |
| 1727 | Runtime::Current()->GetHeap()->RevokeThreadLocalBuffers(this); |
Hiroshi Yamauchi | 0b71357 | 2015-06-16 18:29:23 -0700 | [diff] [blame] | 1728 | if (kUseReadBarrier) { |
| 1729 | Runtime::Current()->GetHeap()->ConcurrentCopyingCollector()->RevokeThreadLocalMarkStack(this); |
| 1730 | } |
Hiroshi Yamauchi | a1b94c6 | 2014-12-17 15:49:56 -0800 | [diff] [blame] | 1731 | } |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 1732 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 1733 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 1734 | Thread::~Thread() { |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1735 | CHECK(tlsPtr_.class_loader_override == nullptr); |
| 1736 | CHECK(tlsPtr_.jpeer == nullptr); |
| 1737 | CHECK(tlsPtr_.opeer == nullptr); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1738 | bool initialized = (tlsPtr_.jni_env != nullptr); // Did Thread::Init run? |
Alexei Zavjalov | 1efa0a9 | 2014-02-04 02:08:31 +0700 | [diff] [blame] | 1739 | if (initialized) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1740 | delete tlsPtr_.jni_env; |
| 1741 | tlsPtr_.jni_env = nullptr; |
Alexei Zavjalov | 1efa0a9 | 2014-02-04 02:08:31 +0700 | [diff] [blame] | 1742 | } |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 1743 | CHECK_NE(GetState(), kRunnable); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1744 | CHECK_NE(ReadFlag(kCheckpointRequest), true); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1745 | CHECK(tlsPtr_.checkpoint_functions[0] == nullptr); |
| 1746 | CHECK(tlsPtr_.checkpoint_functions[1] == nullptr); |
| 1747 | CHECK(tlsPtr_.checkpoint_functions[2] == nullptr); |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 1748 | CHECK(tlsPtr_.flip_function == nullptr); |
| 1749 | CHECK_EQ(tls32_.suspended_at_suspend_check, false); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1750 | |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 1751 | // Make sure we processed all deoptimization requests. |
| 1752 | CHECK(tlsPtr_.deoptimization_context_stack == nullptr) << "Missed deoptimization"; |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 1753 | CHECK(tlsPtr_.frame_id_to_shadow_frame == nullptr) << |
| 1754 | "Not all deoptimized frames have been consumed by the debugger."; |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 1755 | |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 1756 | // We may be deleting a still born thread. |
| 1757 | SetStateUnsafe(kTerminated); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1758 | |
| 1759 | delete wait_cond_; |
| 1760 | delete wait_mutex_; |
| 1761 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1762 | if (tlsPtr_.long_jump_context != nullptr) { |
| 1763 | delete tlsPtr_.long_jump_context; |
Ian Rogers | c928de9 | 2013-02-27 14:30:44 -0800 | [diff] [blame] | 1764 | } |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 1765 | |
Alexei Zavjalov | 1efa0a9 | 2014-02-04 02:08:31 +0700 | [diff] [blame] | 1766 | if (initialized) { |
| 1767 | CleanupCpu(); |
| 1768 | } |
| 1769 | |
Sebastien Hertz | 597c4f0 | 2015-01-26 17:37:14 +0100 | [diff] [blame] | 1770 | if (tlsPtr_.single_step_control != nullptr) { |
| 1771 | delete tlsPtr_.single_step_control; |
| 1772 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1773 | delete tlsPtr_.instrumentation_stack; |
| 1774 | delete tlsPtr_.name; |
| 1775 | delete tlsPtr_.stack_trace_sample; |
Dave Allison | 8ce6b90 | 2014-08-26 11:07:58 -0700 | [diff] [blame] | 1776 | free(tlsPtr_.nested_signal_state); |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 1777 | |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1778 | Runtime::Current()->GetHeap()->AssertThreadLocalBuffersAreRevoked(this); |
Hiroshi Yamauchi | cf58d4a | 2013-09-26 14:21:22 -0700 | [diff] [blame] | 1779 | |
Elliott Hughes | d8af159 | 2012-04-16 20:40:15 -0700 | [diff] [blame] | 1780 | TearDownAlternateSignalStack(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 1781 | } |
| 1782 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1783 | void Thread::HandleUncaughtExceptions(ScopedObjectAccess& soa) { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1784 | if (!IsExceptionPending()) { |
| 1785 | return; |
| 1786 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1787 | ScopedLocalRef<jobject> peer(tlsPtr_.jni_env, soa.AddLocalReference<jobject>(tlsPtr_.opeer)); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1788 | ScopedThreadStateChange tsc(this, kNative); |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 1789 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1790 | // Get and clear the exception. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1791 | ScopedLocalRef<jthrowable> exception(tlsPtr_.jni_env, tlsPtr_.jni_env->ExceptionOccurred()); |
| 1792 | tlsPtr_.jni_env->ExceptionClear(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1793 | |
| 1794 | // If the thread has its own handler, use that. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1795 | ScopedLocalRef<jobject> handler(tlsPtr_.jni_env, |
| 1796 | tlsPtr_.jni_env->GetObjectField(peer.get(), |
| 1797 | WellKnownClasses::java_lang_Thread_uncaughtHandler)); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1798 | if (handler.get() == nullptr) { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1799 | // Otherwise use the thread group's default handler. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1800 | handler.reset(tlsPtr_.jni_env->GetObjectField(peer.get(), |
| 1801 | WellKnownClasses::java_lang_Thread_group)); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1802 | } |
| 1803 | |
| 1804 | // Call the handler. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1805 | tlsPtr_.jni_env->CallVoidMethod(handler.get(), |
Andreas Gampe | c8ccf68 | 2014-09-29 20:07:43 -0700 | [diff] [blame] | 1806 | WellKnownClasses::java_lang_Thread__UncaughtExceptionHandler_uncaughtException, |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1807 | peer.get(), exception.get()); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1808 | |
| 1809 | // If the handler threw, clear that exception too. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1810 | tlsPtr_.jni_env->ExceptionClear(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1811 | } |
| 1812 | |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1813 | void Thread::RemoveFromThreadGroup(ScopedObjectAccess& soa) { |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 1814 | // this.group.removeThread(this); |
| 1815 | // group can be null if we're in the compiler or a test. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1816 | mirror::Object* ogroup = soa.DecodeField(WellKnownClasses::java_lang_Thread_group) |
| 1817 | ->GetObject(tlsPtr_.opeer); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1818 | if (ogroup != nullptr) { |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1819 | ScopedLocalRef<jobject> group(soa.Env(), soa.AddLocalReference<jobject>(ogroup)); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1820 | ScopedLocalRef<jobject> peer(soa.Env(), soa.AddLocalReference<jobject>(tlsPtr_.opeer)); |
Ian Rogers | cfaa455 | 2012-11-26 21:00:08 -0800 | [diff] [blame] | 1821 | ScopedThreadStateChange tsc(soa.Self(), kNative); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1822 | tlsPtr_.jni_env->CallVoidMethod(group.get(), |
| 1823 | WellKnownClasses::java_lang_ThreadGroup_removeThread, |
| 1824 | peer.get()); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 1825 | } |
| 1826 | } |
| 1827 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1828 | size_t Thread::NumHandleReferences() { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1829 | size_t count = 0; |
Ian Rogers | c0542af | 2014-09-03 16:16:56 -0700 | [diff] [blame] | 1830 | for (HandleScope* cur = tlsPtr_.top_handle_scope; cur != nullptr; cur = cur->GetLink()) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1831 | count += cur->NumberOfReferences(); |
| 1832 | } |
| 1833 | return count; |
| 1834 | } |
| 1835 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1836 | bool Thread::HandleScopeContains(jobject obj) const { |
| 1837 | StackReference<mirror::Object>* hs_entry = |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1838 | reinterpret_cast<StackReference<mirror::Object>*>(obj); |
Ian Rogers | c0542af | 2014-09-03 16:16:56 -0700 | [diff] [blame] | 1839 | for (HandleScope* cur = tlsPtr_.top_handle_scope; cur!= nullptr; cur = cur->GetLink()) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1840 | if (cur->Contains(hs_entry)) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 1841 | return true; |
| 1842 | } |
| 1843 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1844 | // JNI code invoked from portable code uses shadow frames rather than the handle scope. |
| 1845 | return tlsPtr_.managed_stack.ShadowFramesContain(hs_entry); |
TDYa127 | 28f1a14 | 2012-03-15 21:51:52 -0700 | [diff] [blame] | 1846 | } |
| 1847 | |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1848 | void Thread::HandleScopeVisitRoots(RootVisitor* visitor, uint32_t thread_id) { |
Mathieu Chartier | 4809d0a | 2015-04-07 10:39:04 -0700 | [diff] [blame] | 1849 | BufferedRootVisitor<kDefaultBufferedRootCount> buffered_visitor( |
| 1850 | visitor, RootInfo(kRootNativeStack, thread_id)); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1851 | for (HandleScope* cur = tlsPtr_.top_handle_scope; cur; cur = cur->GetLink()) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1852 | for (size_t j = 0, count = cur->NumberOfReferences(); j < count; ++j) { |
Mathieu Chartier | 9086b65 | 2015-04-14 09:35:18 -0700 | [diff] [blame] | 1853 | // GetReference returns a pointer to the stack reference within the handle scope. If this |
| 1854 | // needs to be updated, it will be done by the root visitor. |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 1855 | buffered_visitor.VisitRootIfNonNull(cur->GetHandle(j).GetReference()); |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1856 | } |
| 1857 | } |
| 1858 | } |
| 1859 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1860 | mirror::Object* Thread::DecodeJObject(jobject obj) const { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1861 | if (obj == nullptr) { |
| 1862 | return nullptr; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1863 | } |
| 1864 | IndirectRef ref = reinterpret_cast<IndirectRef>(obj); |
| 1865 | IndirectRefKind kind = GetIndirectRefKind(ref); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1866 | mirror::Object* result; |
Ian Rogers | c0542af | 2014-09-03 16:16:56 -0700 | [diff] [blame] | 1867 | bool expect_null = false; |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 1868 | // The "kinds" below are sorted by the frequency we expect to encounter them. |
| 1869 | if (kind == kLocal) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1870 | IndirectReferenceTable& locals = tlsPtr_.jni_env->locals; |
Hiroshi Yamauchi | 196851b | 2014-05-29 12:16:04 -0700 | [diff] [blame] | 1871 | // Local references do not need a read barrier. |
| 1872 | result = locals.Get<kWithoutReadBarrier>(ref); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1873 | } else if (kind == kHandleScopeOrInvalid) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1874 | // TODO: make stack indirect reference table lookup more efficient. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1875 | // Check if this is a local reference in the handle scope. |
| 1876 | if (LIKELY(HandleScopeContains(obj))) { |
| 1877 | // Read from handle scope. |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1878 | result = reinterpret_cast<StackReference<mirror::Object>*>(obj)->AsMirrorPtr(); |
Mathieu Chartier | c645f1d | 2014-03-06 18:11:53 -0800 | [diff] [blame] | 1879 | VerifyObject(result); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1880 | } else { |
Ian Rogers | c0542af | 2014-09-03 16:16:56 -0700 | [diff] [blame] | 1881 | tlsPtr_.jni_env->vm->JniAbortF(nullptr, "use of invalid jobject %p", obj); |
| 1882 | expect_null = true; |
| 1883 | result = nullptr; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1884 | } |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 1885 | } else if (kind == kGlobal) { |
Mathieu Chartier | 30b5e27 | 2015-09-01 11:14:34 -0700 | [diff] [blame] | 1886 | result = tlsPtr_.jni_env->vm->DecodeGlobal(ref); |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 1887 | } else { |
| 1888 | DCHECK_EQ(kind, kWeakGlobal); |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1889 | result = tlsPtr_.jni_env->vm->DecodeWeakGlobal(const_cast<Thread*>(this), ref); |
Ian Rogers | c0542af | 2014-09-03 16:16:56 -0700 | [diff] [blame] | 1890 | if (Runtime::Current()->IsClearedJniWeakGlobal(result)) { |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 1891 | // This is a special case where it's okay to return null. |
Ian Rogers | c0542af | 2014-09-03 16:16:56 -0700 | [diff] [blame] | 1892 | expect_null = true; |
| 1893 | result = nullptr; |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 1894 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1895 | } |
| 1896 | |
Ian Rogers | c0542af | 2014-09-03 16:16:56 -0700 | [diff] [blame] | 1897 | if (UNLIKELY(!expect_null && result == nullptr)) { |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1898 | tlsPtr_.jni_env->vm->JniAbortF(nullptr, "use of deleted %s %p", |
| 1899 | ToStr<IndirectRefKind>(kind).c_str(), obj); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1900 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 1901 | return result; |
| 1902 | } |
| 1903 | |
Hiroshi Yamauchi | 04302db | 2015-11-11 23:45:34 -0800 | [diff] [blame] | 1904 | bool Thread::IsJWeakCleared(jweak obj) const { |
| 1905 | CHECK(obj != nullptr); |
| 1906 | IndirectRef ref = reinterpret_cast<IndirectRef>(obj); |
| 1907 | IndirectRefKind kind = GetIndirectRefKind(ref); |
| 1908 | CHECK_EQ(kind, kWeakGlobal); |
| 1909 | return tlsPtr_.jni_env->vm->IsWeakGlobalCleared(const_cast<Thread*>(this), ref); |
| 1910 | } |
| 1911 | |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1912 | // Implements java.lang.Thread.interrupted. |
| 1913 | bool Thread::Interrupted() { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 1914 | MutexLock mu(Thread::Current(), *wait_mutex_); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1915 | bool interrupted = IsInterruptedLocked(); |
| 1916 | SetInterruptedLocked(false); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1917 | return interrupted; |
| 1918 | } |
| 1919 | |
| 1920 | // Implements java.lang.Thread.isInterrupted. |
| 1921 | bool Thread::IsInterrupted() { |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 1922 | MutexLock mu(Thread::Current(), *wait_mutex_); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1923 | return IsInterruptedLocked(); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1924 | } |
| 1925 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1926 | void Thread::Interrupt(Thread* self) { |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1927 | MutexLock mu(self, *wait_mutex_); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1928 | if (interrupted_) { |
| 1929 | return; |
| 1930 | } |
| 1931 | interrupted_ = true; |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1932 | NotifyLocked(self); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1933 | } |
| 1934 | |
| 1935 | void Thread::Notify() { |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1936 | Thread* self = Thread::Current(); |
| 1937 | MutexLock mu(self, *wait_mutex_); |
| 1938 | NotifyLocked(self); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1939 | } |
| 1940 | |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1941 | void Thread::NotifyLocked(Thread* self) { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 1942 | if (wait_monitor_ != nullptr) { |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 1943 | wait_cond_->Signal(self); |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1944 | } |
| 1945 | } |
| 1946 | |
Ian Rogers | 68d8b42 | 2014-07-17 11:09:10 -0700 | [diff] [blame] | 1947 | void Thread::SetClassLoaderOverride(jobject class_loader_override) { |
| 1948 | if (tlsPtr_.class_loader_override != nullptr) { |
| 1949 | GetJniEnv()->DeleteGlobalRef(tlsPtr_.class_loader_override); |
| 1950 | } |
| 1951 | tlsPtr_.class_loader_override = GetJniEnv()->NewGlobalRef(class_loader_override); |
| 1952 | } |
| 1953 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1954 | class CountStackDepthVisitor : public StackVisitor { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1955 | public: |
Brian Carlstrom | 93ba893 | 2013-07-17 21:31:49 -0700 | [diff] [blame] | 1956 | explicit CountStackDepthVisitor(Thread* thread) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1957 | SHARED_REQUIRES(Locks::mutator_lock_) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 1958 | : StackVisitor(thread, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 1959 | depth_(0), skip_depth_(0), skipping_(true) {} |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1960 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 1961 | bool VisitFrame() SHARED_REQUIRES(Locks::mutator_lock_) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1962 | // We want to skip frames up to and including the exception's constructor. |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 1963 | // Note we also skip the frame if it doesn't have a method (namely the callee |
| 1964 | // save frame) |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1965 | ArtMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1966 | if (skipping_ && !m->IsRuntimeMethod() && |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1967 | !mirror::Throwable::GetJavaLangThrowable()->IsAssignableFrom(m->GetDeclaringClass())) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1968 | skipping_ = false; |
| 1969 | } |
| 1970 | if (!skipping_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1971 | if (!m->IsRuntimeMethod()) { // Ignore runtime frames (in particular callee save). |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 1972 | ++depth_; |
| 1973 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1974 | } else { |
| 1975 | ++skip_depth_; |
| 1976 | } |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 1977 | return true; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1978 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1979 | |
| 1980 | int GetDepth() const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1981 | return depth_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1982 | } |
| 1983 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1984 | int GetSkipDepth() const { |
| 1985 | return skip_depth_; |
| 1986 | } |
| 1987 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1988 | private: |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1989 | uint32_t depth_; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1990 | uint32_t skip_depth_; |
| 1991 | bool skipping_; |
Sebastien Hertz | 26f7286 | 2015-09-15 09:52:07 +0200 | [diff] [blame] | 1992 | |
| 1993 | DISALLOW_COPY_AND_ASSIGN(CountStackDepthVisitor); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1994 | }; |
| 1995 | |
Sebastien Hertz | ee1d79a | 2014-02-21 15:46:30 +0100 | [diff] [blame] | 1996 | template<bool kTransactionActive> |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 1997 | class BuildInternalStackTraceVisitor : public StackVisitor { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1998 | public: |
Roland Levillain | 3887c46 | 2015-08-12 18:15:42 +0100 | [diff] [blame] | 1999 | BuildInternalStackTraceVisitor(Thread* self, Thread* thread, int skip_depth) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 2000 | : StackVisitor(thread, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| 2001 | self_(self), |
| 2002 | skip_depth_(skip_depth), |
| 2003 | count_(0), |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2004 | trace_(nullptr), |
| 2005 | pointer_size_(Runtime::Current()->GetClassLinker()->GetImagePointerSize()) {} |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 2006 | |
Mathieu Chartier | 4e2cb09 | 2015-07-22 16:17:51 -0700 | [diff] [blame] | 2007 | bool Init(int depth) SHARED_REQUIRES(Locks::mutator_lock_) ACQUIRE(Roles::uninterruptible_) { |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2008 | // Allocate method trace as an object array where the first element is a pointer array that |
| 2009 | // contains the ArtMethod pointers and dex PCs. The rest of the elements are the declaring |
| 2010 | // class of the ArtMethod pointers. |
| 2011 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 2012 | StackHandleScope<1> hs(self_); |
| 2013 | mirror::Class* array_class = class_linker->GetClassRoot(ClassLinker::kObjectArrayClass); |
| 2014 | // The first element is the methods and dex pc array, the other elements are declaring classes |
| 2015 | // for the methods to ensure classes in the stack trace don't get unloaded. |
| 2016 | Handle<mirror::ObjectArray<mirror::Object>> trace( |
| 2017 | hs.NewHandle( |
| 2018 | mirror::ObjectArray<mirror::Object>::Alloc(hs.Self(), array_class, depth + 1))); |
| 2019 | if (trace.Get() == nullptr) { |
| 2020 | // Acquire uninterruptible_ in all paths. |
| 2021 | self_->StartAssertNoThreadSuspension("Building internal stack trace"); |
Mathieu Chartier | 566fc92 | 2015-09-29 10:21:55 -0700 | [diff] [blame] | 2022 | self_->AssertPendingOOMException(); |
| 2023 | return false; |
| 2024 | } |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2025 | mirror::PointerArray* methods_and_pcs = class_linker->AllocPointerArray(self_, depth * 2); |
| 2026 | const char* last_no_suspend_cause = |
| 2027 | self_->StartAssertNoThreadSuspension("Building internal stack trace"); |
| 2028 | if (methods_and_pcs == nullptr) { |
| 2029 | self_->AssertPendingOOMException(); |
| 2030 | return false; |
| 2031 | } |
| 2032 | trace->Set(0, methods_and_pcs); |
| 2033 | trace_ = trace.Get(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2034 | // If We are called from native, use non-transactional mode. |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2035 | CHECK(last_no_suspend_cause == nullptr) << last_no_suspend_cause; |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 2036 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 2037 | } |
| 2038 | |
Mathieu Chartier | 4e2cb09 | 2015-07-22 16:17:51 -0700 | [diff] [blame] | 2039 | virtual ~BuildInternalStackTraceVisitor() RELEASE(Roles::uninterruptible_) { |
| 2040 | self_->EndAssertNoThreadSuspension(nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2041 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 2042 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2043 | bool VisitFrame() SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2044 | if (trace_ == nullptr) { |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 2045 | return true; // We're probably trying to fillInStackTrace for an OutOfMemoryError. |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 2046 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 2047 | if (skip_depth_ > 0) { |
| 2048 | skip_depth_--; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 2049 | return true; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 2050 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2051 | ArtMethod* m = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2052 | if (m->IsRuntimeMethod()) { |
| 2053 | return true; // Ignore runtime frames (in particular callee save). |
Ian Rogers | 6b0870d | 2011-12-15 19:38:12 -0800 | [diff] [blame] | 2054 | } |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2055 | mirror::PointerArray* trace_methods_and_pcs = GetTraceMethodsAndPCs(); |
| 2056 | trace_methods_and_pcs->SetElementPtrSize<kTransactionActive>(count_, m, pointer_size_); |
| 2057 | trace_methods_and_pcs->SetElementPtrSize<kTransactionActive>( |
| 2058 | trace_methods_and_pcs->GetLength() / 2 + count_, |
| 2059 | m->IsProxyMethod() ? DexFile::kDexNoIndex : GetDexPc(), |
| 2060 | pointer_size_); |
| 2061 | // Save the declaring class of the method to ensure that the declaring classes of the methods |
| 2062 | // do not get unloaded while the stack trace is live. |
| 2063 | trace_->Set(count_ + 1, m->GetDeclaringClass()); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2064 | ++count_; |
Elliott Hughes | 530fa00 | 2012-03-12 11:44:49 -0700 | [diff] [blame] | 2065 | return true; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 2066 | } |
| 2067 | |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2068 | mirror::PointerArray* GetTraceMethodsAndPCs() const SHARED_REQUIRES(Locks::mutator_lock_) { |
| 2069 | return down_cast<mirror::PointerArray*>(trace_->Get(0)); |
| 2070 | } |
| 2071 | |
| 2072 | mirror::ObjectArray<mirror::Object>* GetInternalStackTrace() const { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2073 | return trace_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 2074 | } |
| 2075 | |
| 2076 | private: |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 2077 | Thread* const self_; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 2078 | // How many more frames to skip. |
| 2079 | int32_t skip_depth_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2080 | // Current position down stack trace. |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2081 | uint32_t count_; |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2082 | // An object array where the first element is a pointer array that contains the ArtMethod |
| 2083 | // pointers on the stack and dex PCs. The rest of the elements are the declaring |
| 2084 | // class of the ArtMethod pointers. trace_[i+1] contains the declaring class of the ArtMethod of |
| 2085 | // the i'th frame. |
| 2086 | mirror::ObjectArray<mirror::Object>* trace_; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2087 | // For cross compilation. |
Sebastien Hertz | 26f7286 | 2015-09-15 09:52:07 +0200 | [diff] [blame] | 2088 | const size_t pointer_size_; |
| 2089 | |
| 2090 | DISALLOW_COPY_AND_ASSIGN(BuildInternalStackTraceVisitor); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 2091 | }; |
| 2092 | |
Sebastien Hertz | ee1d79a | 2014-02-21 15:46:30 +0100 | [diff] [blame] | 2093 | template<bool kTransactionActive> |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 2094 | jobject Thread::CreateInternalStackTrace(const ScopedObjectAccessAlreadyRunnable& soa) const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2095 | // Compute depth of stack |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 2096 | CountStackDepthVisitor count_visitor(const_cast<Thread*>(this)); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2097 | count_visitor.WalkStack(); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 2098 | int32_t depth = count_visitor.GetDepth(); |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 2099 | int32_t skip_depth = count_visitor.GetSkipDepth(); |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 2100 | |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 2101 | // Build internal stack trace. |
Sebastien Hertz | ee1d79a | 2014-02-21 15:46:30 +0100 | [diff] [blame] | 2102 | BuildInternalStackTraceVisitor<kTransactionActive> build_trace_visitor(soa.Self(), |
| 2103 | const_cast<Thread*>(this), |
| 2104 | skip_depth); |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 2105 | if (!build_trace_visitor.Init(depth)) { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2106 | return nullptr; // Allocation failed. |
Ian Rogers | 283ed0d | 2012-02-16 15:25:09 -0800 | [diff] [blame] | 2107 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2108 | build_trace_visitor.WalkStack(); |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2109 | mirror::ObjectArray<mirror::Object>* trace = build_trace_visitor.GetInternalStackTrace(); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 2110 | if (kIsDebugBuild) { |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2111 | mirror::PointerArray* trace_methods = build_trace_visitor.GetTraceMethodsAndPCs(); |
| 2112 | // Second half of trace_methods is dex PCs. |
| 2113 | for (uint32_t i = 0; i < static_cast<uint32_t>(trace_methods->GetLength() / 2); ++i) { |
| 2114 | auto* method = trace_methods->GetElementPtrSize<ArtMethod*>( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2115 | i, Runtime::Current()->GetClassLinker()->GetImagePointerSize()); |
| 2116 | CHECK(method != nullptr); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 2117 | } |
| 2118 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2119 | return soa.AddLocalReference<jobject>(trace); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2120 | } |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 2121 | template jobject Thread::CreateInternalStackTrace<false>( |
| 2122 | const ScopedObjectAccessAlreadyRunnable& soa) const; |
| 2123 | template jobject Thread::CreateInternalStackTrace<true>( |
| 2124 | const ScopedObjectAccessAlreadyRunnable& soa) const; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2125 | |
Nicolas Geoffray | 7642cfc | 2015-02-26 10:56:09 +0000 | [diff] [blame] | 2126 | bool Thread::IsExceptionThrownByCurrentMethod(mirror::Throwable* exception) const { |
| 2127 | CountStackDepthVisitor count_visitor(const_cast<Thread*>(this)); |
| 2128 | count_visitor.WalkStack(); |
| 2129 | return count_visitor.GetDepth() == exception->GetStackDepth(); |
| 2130 | } |
| 2131 | |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 2132 | jobjectArray Thread::InternalStackTraceToStackTraceElementArray( |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2133 | const ScopedObjectAccessAlreadyRunnable& soa, |
| 2134 | jobject internal, |
| 2135 | jobjectArray output_array, |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 2136 | int* stack_depth) { |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2137 | // Decode the internal stack trace into the depth, method trace and PC trace. |
| 2138 | // Subtract one for the methods and PC trace. |
| 2139 | int32_t depth = soa.Decode<mirror::Array*>(internal)->GetLength() - 1; |
| 2140 | DCHECK_GE(depth, 0); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2141 | |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2142 | ClassLinker* const class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2143 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 2144 | jobjectArray result; |
Mathieu Chartier | 530825b | 2013-09-25 17:56:49 -0700 | [diff] [blame] | 2145 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2146 | if (output_array != nullptr) { |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 2147 | // Reuse the array we were given. |
| 2148 | result = output_array; |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 2149 | // ...adjusting the number of frames we'll write to not exceed the array length. |
Mathieu Chartier | 530825b | 2013-09-25 17:56:49 -0700 | [diff] [blame] | 2150 | const int32_t traces_length = |
| 2151 | soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(result)->GetLength(); |
| 2152 | depth = std::min(depth, traces_length); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 2153 | } else { |
| 2154 | // Create java_trace array and place in local reference table |
Mathieu Chartier | 530825b | 2013-09-25 17:56:49 -0700 | [diff] [blame] | 2155 | mirror::ObjectArray<mirror::StackTraceElement>* java_traces = |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2156 | class_linker->AllocStackTraceElementArray(soa.Self(), depth); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2157 | if (java_traces == nullptr) { |
| 2158 | return nullptr; |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 2159 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2160 | result = soa.AddLocalReference<jobjectArray>(java_traces); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 2161 | } |
| 2162 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2163 | if (stack_depth != nullptr) { |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 2164 | *stack_depth = depth; |
| 2165 | } |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 2166 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 2167 | for (int32_t i = 0; i < depth; ++i) { |
Mathieu Chartier | 910e827 | 2015-09-30 09:24:22 -0700 | [diff] [blame] | 2168 | mirror::ObjectArray<mirror::Object>* decoded_traces = |
| 2169 | soa.Decode<mirror::Object*>(internal)->AsObjectArray<mirror::Object>(); |
| 2170 | // Methods and dex PC trace is element 0. |
| 2171 | DCHECK(decoded_traces->Get(0)->IsIntArray() || decoded_traces->Get(0)->IsLongArray()); |
| 2172 | mirror::PointerArray* const method_trace = |
| 2173 | down_cast<mirror::PointerArray*>(decoded_traces->Get(0)); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2174 | // Prepare parameters for StackTraceElement(String cls, String method, String file, int line) |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2175 | ArtMethod* method = method_trace->GetElementPtrSize<ArtMethod*>(i, sizeof(void*)); |
| 2176 | uint32_t dex_pc = method_trace->GetElementPtrSize<uint32_t>( |
| 2177 | i + method_trace->GetLength() / 2, sizeof(void*)); |
Jeff Hao | 228d6b8 | 2013-12-03 15:00:05 -0800 | [diff] [blame] | 2178 | int32_t line_number; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2179 | StackHandleScope<3> hs(soa.Self()); |
| 2180 | auto class_name_object(hs.NewHandle<mirror::String>(nullptr)); |
| 2181 | auto source_name_object(hs.NewHandle<mirror::String>(nullptr)); |
Jeff Hao | 228d6b8 | 2013-12-03 15:00:05 -0800 | [diff] [blame] | 2182 | if (method->IsProxyMethod()) { |
| 2183 | line_number = -1; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2184 | class_name_object.Assign(method->GetDeclaringClass()->GetName()); |
Jeff Hao | 228d6b8 | 2013-12-03 15:00:05 -0800 | [diff] [blame] | 2185 | // source_name_object intentionally left null for proxy methods |
| 2186 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 2187 | line_number = method->GetLineNumFromDexPC(dex_pc); |
Jeff Hao | 228d6b8 | 2013-12-03 15:00:05 -0800 | [diff] [blame] | 2188 | // Allocate element, potentially triggering GC |
| 2189 | // TODO: reuse class_name_object via Class::name_? |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 2190 | const char* descriptor = method->GetDeclaringClassDescriptor(); |
Brian Carlstrom | 7c6aca2 | 2014-01-31 18:44:56 -0800 | [diff] [blame] | 2191 | CHECK(descriptor != nullptr); |
Jeff Hao | 228d6b8 | 2013-12-03 15:00:05 -0800 | [diff] [blame] | 2192 | std::string class_name(PrettyDescriptor(descriptor)); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2193 | class_name_object.Assign( |
| 2194 | mirror::String::AllocFromModifiedUtf8(soa.Self(), class_name.c_str())); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2195 | if (class_name_object.Get() == nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2196 | soa.Self()->AssertPendingOOMException(); |
Brian Carlstrom | 7c6aca2 | 2014-01-31 18:44:56 -0800 | [diff] [blame] | 2197 | return nullptr; |
Jeff Hao | 228d6b8 | 2013-12-03 15:00:05 -0800 | [diff] [blame] | 2198 | } |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 2199 | const char* source_file = method->GetDeclaringClassSourceFile(); |
Brian Carlstrom | 7c6aca2 | 2014-01-31 18:44:56 -0800 | [diff] [blame] | 2200 | if (source_file != nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2201 | source_name_object.Assign(mirror::String::AllocFromModifiedUtf8(soa.Self(), source_file)); |
| 2202 | if (source_name_object.Get() == nullptr) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2203 | soa.Self()->AssertPendingOOMException(); |
Brian Carlstrom | 7c6aca2 | 2014-01-31 18:44:56 -0800 | [diff] [blame] | 2204 | return nullptr; |
| 2205 | } |
Jeff Hao | 228d6b8 | 2013-12-03 15:00:05 -0800 | [diff] [blame] | 2206 | } |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 2207 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2208 | const char* method_name = method->GetInterfaceMethodIfProxy(sizeof(void*))->GetName(); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2209 | CHECK(method_name != nullptr); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2210 | Handle<mirror::String> method_name_object( |
| 2211 | hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), method_name))); |
| 2212 | if (method_name_object.Get() == nullptr) { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2213 | return nullptr; |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 2214 | } |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 2215 | mirror::StackTraceElement* obj = mirror::StackTraceElement::Alloc( |
| 2216 | soa.Self(), class_name_object, method_name_object, source_name_object, line_number); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2217 | if (obj == nullptr) { |
| 2218 | return nullptr; |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 2219 | } |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 2220 | // We are called from native: use non-transactional mode. |
| 2221 | soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(result)->Set<false>(i, obj); |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 2222 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 2223 | return result; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 2224 | } |
| 2225 | |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2226 | void Thread::ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) { |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 2227 | va_list args; |
| 2228 | va_start(args, fmt); |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2229 | ThrowNewExceptionV(exception_class_descriptor, fmt, args); |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 2230 | va_end(args); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 2231 | } |
| 2232 | |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2233 | void Thread::ThrowNewExceptionV(const char* exception_class_descriptor, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2234 | const char* fmt, va_list ap) { |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 2235 | std::string msg; |
| 2236 | StringAppendV(&msg, fmt, ap); |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2237 | ThrowNewException(exception_class_descriptor, msg.c_str()); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 2238 | } |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 2239 | |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2240 | void Thread::ThrowNewException(const char* exception_class_descriptor, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2241 | const char* msg) { |
Mathieu Chartier | 8d7672e | 2014-02-25 10:57:16 -0800 | [diff] [blame] | 2242 | // Callers should either clear or call ThrowNewWrappedException. |
| 2243 | AssertNoPendingExceptionForNewException(msg); |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2244 | ThrowNewWrappedException(exception_class_descriptor, msg); |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 2245 | } |
| 2246 | |
Nicolas Geoffray | ee07703 | 2015-03-09 14:56:37 +0000 | [diff] [blame] | 2247 | static mirror::ClassLoader* GetCurrentClassLoader(Thread* self) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2248 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2249 | ArtMethod* method = self->GetCurrentMethod(nullptr); |
Nicolas Geoffray | ee07703 | 2015-03-09 14:56:37 +0000 | [diff] [blame] | 2250 | return method != nullptr |
| 2251 | ? method->GetDeclaringClass()->GetClassLoader() |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2252 | : nullptr; |
| 2253 | } |
| 2254 | |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2255 | void Thread::ThrowNewWrappedException(const char* exception_class_descriptor, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2256 | const char* msg) { |
| 2257 | DCHECK_EQ(this, Thread::Current()); |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2258 | ScopedObjectAccessUnchecked soa(this); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2259 | StackHandleScope<3> hs(soa.Self()); |
Nicolas Geoffray | ee07703 | 2015-03-09 14:56:37 +0000 | [diff] [blame] | 2260 | Handle<mirror::ClassLoader> class_loader(hs.NewHandle(GetCurrentClassLoader(soa.Self()))); |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2261 | ScopedLocalRef<jobject> cause(GetJniEnv(), soa.AddLocalReference<jobject>(GetException())); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2262 | ClearException(); |
| 2263 | Runtime* runtime = Runtime::Current(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2264 | auto* cl = runtime->GetClassLinker(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2265 | Handle<mirror::Class> exception_class( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2266 | hs.NewHandle(cl->FindClass(this, exception_class_descriptor, class_loader))); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2267 | if (UNLIKELY(exception_class.Get() == nullptr)) { |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 2268 | CHECK(IsExceptionPending()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2269 | LOG(ERROR) << "No exception class " << PrettyDescriptor(exception_class_descriptor); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 2270 | return; |
| 2271 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2272 | |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 2273 | if (UNLIKELY(!runtime->GetClassLinker()->EnsureInitialized(soa.Self(), exception_class, true, |
| 2274 | true))) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2275 | DCHECK(IsExceptionPending()); |
| 2276 | return; |
| 2277 | } |
| 2278 | DCHECK(!runtime->IsStarted() || exception_class->IsThrowableClass()); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2279 | Handle<mirror::Throwable> exception( |
| 2280 | hs.NewHandle(down_cast<mirror::Throwable*>(exception_class->AllocObject(this)))); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2281 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 2282 | // If we couldn't allocate the exception, throw the pre-allocated out of memory exception. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2283 | if (exception.Get() == nullptr) { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2284 | SetException(Runtime::Current()->GetPreAllocatedOutOfMemoryError()); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 2285 | return; |
| 2286 | } |
| 2287 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2288 | // Choose an appropriate constructor and set up the arguments. |
| 2289 | const char* signature; |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2290 | ScopedLocalRef<jstring> msg_string(GetJniEnv(), nullptr); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2291 | if (msg != nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2292 | // Ensure we remember this and the method over the String allocation. |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2293 | msg_string.reset( |
| 2294 | soa.AddLocalReference<jstring>(mirror::String::AllocFromModifiedUtf8(this, msg))); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2295 | if (UNLIKELY(msg_string.get() == nullptr)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2296 | CHECK(IsExceptionPending()); // OOME. |
| 2297 | return; |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 2298 | } |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2299 | if (cause.get() == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2300 | signature = "(Ljava/lang/String;)V"; |
| 2301 | } else { |
| 2302 | signature = "(Ljava/lang/String;Ljava/lang/Throwable;)V"; |
| 2303 | } |
| 2304 | } else { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2305 | if (cause.get() == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2306 | signature = "()V"; |
| 2307 | } else { |
| 2308 | signature = "(Ljava/lang/Throwable;)V"; |
| 2309 | } |
Brian Carlstrom | ebd1fd2 | 2011-12-07 15:46:26 -0800 | [diff] [blame] | 2310 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2311 | ArtMethod* exception_init_method = |
| 2312 | exception_class->FindDeclaredDirectMethod("<init>", signature, cl->GetImagePointerSize()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2313 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2314 | CHECK(exception_init_method != nullptr) << "No <init>" << signature << " in " |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2315 | << PrettyDescriptor(exception_class_descriptor); |
| 2316 | |
| 2317 | if (UNLIKELY(!runtime->IsStarted())) { |
| 2318 | // Something is trying to throw an exception without a started runtime, which is the common |
| 2319 | // case in the compiler. We won't be able to invoke the constructor of the exception, so set |
| 2320 | // the exception fields directly. |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2321 | if (msg != nullptr) { |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2322 | exception->SetDetailMessage(down_cast<mirror::String*>(DecodeJObject(msg_string.get()))); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2323 | } |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2324 | if (cause.get() != nullptr) { |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2325 | exception->SetCause(down_cast<mirror::Throwable*>(DecodeJObject(cause.get()))); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2326 | } |
Ian Rogers | c45b8b5 | 2014-05-03 01:39:59 -0700 | [diff] [blame] | 2327 | ScopedLocalRef<jobject> trace(GetJniEnv(), |
| 2328 | Runtime::Current()->IsActiveTransaction() |
| 2329 | ? CreateInternalStackTrace<true>(soa) |
| 2330 | : CreateInternalStackTrace<false>(soa)); |
| 2331 | if (trace.get() != nullptr) { |
| 2332 | exception->SetStackState(down_cast<mirror::Throwable*>(DecodeJObject(trace.get()))); |
| 2333 | } |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2334 | SetException(exception.Get()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2335 | } else { |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2336 | jvalue jv_args[2]; |
| 2337 | size_t i = 0; |
| 2338 | |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2339 | if (msg != nullptr) { |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2340 | jv_args[i].l = msg_string.get(); |
| 2341 | ++i; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2342 | } |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2343 | if (cause.get() != nullptr) { |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 2344 | jv_args[i].l = cause.get(); |
| 2345 | ++i; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2346 | } |
Jeff Hao | 39b6c24 | 2015-05-19 20:30:23 -0700 | [diff] [blame] | 2347 | ScopedLocalRef<jobject> ref(soa.Env(), soa.AddLocalReference<jobject>(exception.Get())); |
| 2348 | InvokeWithJValues(soa, ref.get(), soa.EncodeMethod(exception_init_method), jv_args); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2349 | if (LIKELY(!IsExceptionPending())) { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2350 | SetException(exception.Get()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2351 | } |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 2352 | } |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 2353 | } |
| 2354 | |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 2355 | void Thread::ThrowOutOfMemoryError(const char* msg) { |
Andreas Gampe | e4301ff | 2015-02-17 19:25:29 -0800 | [diff] [blame] | 2356 | LOG(WARNING) << StringPrintf("Throwing OutOfMemoryError \"%s\"%s", |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2357 | msg, (tls32_.throwing_OutOfMemoryError ? " (recursive case)" : "")); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2358 | if (!tls32_.throwing_OutOfMemoryError) { |
| 2359 | tls32_.throwing_OutOfMemoryError = true; |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 2360 | ThrowNewException("Ljava/lang/OutOfMemoryError;", msg); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2361 | tls32_.throwing_OutOfMemoryError = false; |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 2362 | } else { |
Andreas Gampe | e4301ff | 2015-02-17 19:25:29 -0800 | [diff] [blame] | 2363 | Dump(LOG(WARNING)); // The pre-allocated OOME has no stack, so help out and log one. |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2364 | SetException(Runtime::Current()->GetPreAllocatedOutOfMemoryError()); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 2365 | } |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 2366 | } |
| 2367 | |
Elliott Hughes | 498508c | 2011-10-17 14:58:22 -0700 | [diff] [blame] | 2368 | Thread* Thread::CurrentFromGdb() { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 2369 | return Thread::Current(); |
| 2370 | } |
| 2371 | |
| 2372 | void Thread::DumpFromGdb() const { |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 2373 | std::ostringstream ss; |
| 2374 | Dump(ss); |
Elliott Hughes | 9557241 | 2011-12-13 18:14:20 -0800 | [diff] [blame] | 2375 | std::string str(ss.str()); |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 2376 | // log to stderr for debugging command line processes |
| 2377 | std::cerr << str; |
Andreas Gampe | c60e1b7 | 2015-07-30 08:57:50 -0700 | [diff] [blame] | 2378 | #ifdef __ANDROID__ |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 2379 | // log to logcat for debugging frameworks processes |
| 2380 | LOG(INFO) << str; |
| 2381 | #endif |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 2382 | } |
| 2383 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2384 | // Explicitly instantiate 32 and 64bit thread offset dumping support. |
| 2385 | template void Thread::DumpThreadOffset<4>(std::ostream& os, uint32_t offset); |
| 2386 | template void Thread::DumpThreadOffset<8>(std::ostream& os, uint32_t offset); |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 2387 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2388 | template<size_t ptr_size> |
| 2389 | void Thread::DumpThreadOffset(std::ostream& os, uint32_t offset) { |
| 2390 | #define DO_THREAD_OFFSET(x, y) \ |
| 2391 | if (offset == x.Uint32Value()) { \ |
| 2392 | os << y; \ |
Brian Carlstrom | f69863b | 2013-07-17 21:53:13 -0700 | [diff] [blame] | 2393 | return; \ |
| 2394 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2395 | DO_THREAD_OFFSET(ThreadFlagsOffset<ptr_size>(), "state_and_flags") |
| 2396 | DO_THREAD_OFFSET(CardTableOffset<ptr_size>(), "card_table") |
| 2397 | DO_THREAD_OFFSET(ExceptionOffset<ptr_size>(), "exception") |
| 2398 | DO_THREAD_OFFSET(PeerOffset<ptr_size>(), "peer"); |
| 2399 | DO_THREAD_OFFSET(JniEnvOffset<ptr_size>(), "jni_env") |
| 2400 | DO_THREAD_OFFSET(SelfOffset<ptr_size>(), "self") |
| 2401 | DO_THREAD_OFFSET(StackEndOffset<ptr_size>(), "stack_end") |
| 2402 | DO_THREAD_OFFSET(ThinLockIdOffset<ptr_size>(), "thin_lock_thread_id") |
| 2403 | DO_THREAD_OFFSET(TopOfManagedStackOffset<ptr_size>(), "top_quick_frame_method") |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2404 | DO_THREAD_OFFSET(TopShadowFrameOffset<ptr_size>(), "top_shadow_frame") |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 2405 | DO_THREAD_OFFSET(TopHandleScopeOffset<ptr_size>(), "top_handle_scope") |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2406 | DO_THREAD_OFFSET(ThreadSuspendTriggerOffset<ptr_size>(), "suspend_trigger") |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 2407 | #undef DO_THREAD_OFFSET |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 2408 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2409 | #define JNI_ENTRY_POINT_INFO(x) \ |
| 2410 | if (JNI_ENTRYPOINT_OFFSET(ptr_size, x).Uint32Value() == offset) { \ |
| 2411 | os << #x; \ |
| 2412 | return; \ |
| 2413 | } |
| 2414 | JNI_ENTRY_POINT_INFO(pDlsymLookup) |
| 2415 | #undef JNI_ENTRY_POINT_INFO |
| 2416 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2417 | #define QUICK_ENTRY_POINT_INFO(x) \ |
| 2418 | if (QUICK_ENTRYPOINT_OFFSET(ptr_size, x).Uint32Value() == offset) { \ |
| 2419 | os << #x; \ |
| 2420 | return; \ |
| 2421 | } |
| 2422 | QUICK_ENTRY_POINT_INFO(pAllocArray) |
| 2423 | QUICK_ENTRY_POINT_INFO(pAllocArrayResolved) |
| 2424 | QUICK_ENTRY_POINT_INFO(pAllocArrayWithAccessCheck) |
| 2425 | QUICK_ENTRY_POINT_INFO(pAllocObject) |
| 2426 | QUICK_ENTRY_POINT_INFO(pAllocObjectResolved) |
| 2427 | QUICK_ENTRY_POINT_INFO(pAllocObjectInitialized) |
| 2428 | QUICK_ENTRY_POINT_INFO(pAllocObjectWithAccessCheck) |
| 2429 | QUICK_ENTRY_POINT_INFO(pCheckAndAllocArray) |
| 2430 | QUICK_ENTRY_POINT_INFO(pCheckAndAllocArrayWithAccessCheck) |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 2431 | QUICK_ENTRY_POINT_INFO(pAllocStringFromBytes) |
| 2432 | QUICK_ENTRY_POINT_INFO(pAllocStringFromChars) |
| 2433 | QUICK_ENTRY_POINT_INFO(pAllocStringFromString) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2434 | QUICK_ENTRY_POINT_INFO(pInstanceofNonTrivial) |
| 2435 | QUICK_ENTRY_POINT_INFO(pCheckCast) |
| 2436 | QUICK_ENTRY_POINT_INFO(pInitializeStaticStorage) |
| 2437 | QUICK_ENTRY_POINT_INFO(pInitializeTypeAndVerifyAccess) |
| 2438 | QUICK_ENTRY_POINT_INFO(pInitializeType) |
| 2439 | QUICK_ENTRY_POINT_INFO(pResolveString) |
Fred Shih | 37f05ef | 2014-07-16 18:38:08 -0700 | [diff] [blame] | 2440 | QUICK_ENTRY_POINT_INFO(pSet8Instance) |
| 2441 | QUICK_ENTRY_POINT_INFO(pSet8Static) |
| 2442 | QUICK_ENTRY_POINT_INFO(pSet16Instance) |
| 2443 | QUICK_ENTRY_POINT_INFO(pSet16Static) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2444 | QUICK_ENTRY_POINT_INFO(pSet32Instance) |
| 2445 | QUICK_ENTRY_POINT_INFO(pSet32Static) |
| 2446 | QUICK_ENTRY_POINT_INFO(pSet64Instance) |
| 2447 | QUICK_ENTRY_POINT_INFO(pSet64Static) |
| 2448 | QUICK_ENTRY_POINT_INFO(pSetObjInstance) |
| 2449 | QUICK_ENTRY_POINT_INFO(pSetObjStatic) |
Fred Shih | 37f05ef | 2014-07-16 18:38:08 -0700 | [diff] [blame] | 2450 | QUICK_ENTRY_POINT_INFO(pGetByteInstance) |
| 2451 | QUICK_ENTRY_POINT_INFO(pGetBooleanInstance) |
| 2452 | QUICK_ENTRY_POINT_INFO(pGetByteStatic) |
| 2453 | QUICK_ENTRY_POINT_INFO(pGetBooleanStatic) |
| 2454 | QUICK_ENTRY_POINT_INFO(pGetShortInstance) |
| 2455 | QUICK_ENTRY_POINT_INFO(pGetCharInstance) |
| 2456 | QUICK_ENTRY_POINT_INFO(pGetShortStatic) |
| 2457 | QUICK_ENTRY_POINT_INFO(pGetCharStatic) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2458 | QUICK_ENTRY_POINT_INFO(pGet32Instance) |
| 2459 | QUICK_ENTRY_POINT_INFO(pGet32Static) |
| 2460 | QUICK_ENTRY_POINT_INFO(pGet64Instance) |
| 2461 | QUICK_ENTRY_POINT_INFO(pGet64Static) |
| 2462 | QUICK_ENTRY_POINT_INFO(pGetObjInstance) |
| 2463 | QUICK_ENTRY_POINT_INFO(pGetObjStatic) |
| 2464 | QUICK_ENTRY_POINT_INFO(pAputObjectWithNullAndBoundCheck) |
| 2465 | QUICK_ENTRY_POINT_INFO(pAputObjectWithBoundCheck) |
| 2466 | QUICK_ENTRY_POINT_INFO(pAputObject) |
| 2467 | QUICK_ENTRY_POINT_INFO(pHandleFillArrayData) |
| 2468 | QUICK_ENTRY_POINT_INFO(pJniMethodStart) |
| 2469 | QUICK_ENTRY_POINT_INFO(pJniMethodStartSynchronized) |
| 2470 | QUICK_ENTRY_POINT_INFO(pJniMethodEnd) |
| 2471 | QUICK_ENTRY_POINT_INFO(pJniMethodEndSynchronized) |
| 2472 | QUICK_ENTRY_POINT_INFO(pJniMethodEndWithReference) |
| 2473 | QUICK_ENTRY_POINT_INFO(pJniMethodEndWithReferenceSynchronized) |
| 2474 | QUICK_ENTRY_POINT_INFO(pQuickGenericJniTrampoline) |
| 2475 | QUICK_ENTRY_POINT_INFO(pLockObject) |
| 2476 | QUICK_ENTRY_POINT_INFO(pUnlockObject) |
| 2477 | QUICK_ENTRY_POINT_INFO(pCmpgDouble) |
| 2478 | QUICK_ENTRY_POINT_INFO(pCmpgFloat) |
| 2479 | QUICK_ENTRY_POINT_INFO(pCmplDouble) |
| 2480 | QUICK_ENTRY_POINT_INFO(pCmplFloat) |
Mark Mendell | a4f1220 | 2015-08-06 15:23:34 -0400 | [diff] [blame] | 2481 | QUICK_ENTRY_POINT_INFO(pCos) |
| 2482 | QUICK_ENTRY_POINT_INFO(pSin) |
| 2483 | QUICK_ENTRY_POINT_INFO(pAcos) |
| 2484 | QUICK_ENTRY_POINT_INFO(pAsin) |
| 2485 | QUICK_ENTRY_POINT_INFO(pAtan) |
| 2486 | QUICK_ENTRY_POINT_INFO(pAtan2) |
| 2487 | QUICK_ENTRY_POINT_INFO(pCbrt) |
| 2488 | QUICK_ENTRY_POINT_INFO(pCosh) |
| 2489 | QUICK_ENTRY_POINT_INFO(pExp) |
| 2490 | QUICK_ENTRY_POINT_INFO(pExpm1) |
| 2491 | QUICK_ENTRY_POINT_INFO(pHypot) |
| 2492 | QUICK_ENTRY_POINT_INFO(pLog) |
| 2493 | QUICK_ENTRY_POINT_INFO(pLog10) |
| 2494 | QUICK_ENTRY_POINT_INFO(pNextAfter) |
| 2495 | QUICK_ENTRY_POINT_INFO(pSinh) |
| 2496 | QUICK_ENTRY_POINT_INFO(pTan) |
| 2497 | QUICK_ENTRY_POINT_INFO(pTanh) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2498 | QUICK_ENTRY_POINT_INFO(pFmod) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2499 | QUICK_ENTRY_POINT_INFO(pL2d) |
| 2500 | QUICK_ENTRY_POINT_INFO(pFmodf) |
| 2501 | QUICK_ENTRY_POINT_INFO(pL2f) |
| 2502 | QUICK_ENTRY_POINT_INFO(pD2iz) |
| 2503 | QUICK_ENTRY_POINT_INFO(pF2iz) |
| 2504 | QUICK_ENTRY_POINT_INFO(pIdivmod) |
| 2505 | QUICK_ENTRY_POINT_INFO(pD2l) |
| 2506 | QUICK_ENTRY_POINT_INFO(pF2l) |
| 2507 | QUICK_ENTRY_POINT_INFO(pLdiv) |
| 2508 | QUICK_ENTRY_POINT_INFO(pLmod) |
| 2509 | QUICK_ENTRY_POINT_INFO(pLmul) |
| 2510 | QUICK_ENTRY_POINT_INFO(pShlLong) |
| 2511 | QUICK_ENTRY_POINT_INFO(pShrLong) |
| 2512 | QUICK_ENTRY_POINT_INFO(pUshrLong) |
| 2513 | QUICK_ENTRY_POINT_INFO(pIndexOf) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2514 | QUICK_ENTRY_POINT_INFO(pStringCompareTo) |
| 2515 | QUICK_ENTRY_POINT_INFO(pMemcpy) |
| 2516 | QUICK_ENTRY_POINT_INFO(pQuickImtConflictTrampoline) |
| 2517 | QUICK_ENTRY_POINT_INFO(pQuickResolutionTrampoline) |
| 2518 | QUICK_ENTRY_POINT_INFO(pQuickToInterpreterBridge) |
| 2519 | QUICK_ENTRY_POINT_INFO(pInvokeDirectTrampolineWithAccessCheck) |
| 2520 | QUICK_ENTRY_POINT_INFO(pInvokeInterfaceTrampolineWithAccessCheck) |
| 2521 | QUICK_ENTRY_POINT_INFO(pInvokeStaticTrampolineWithAccessCheck) |
| 2522 | QUICK_ENTRY_POINT_INFO(pInvokeSuperTrampolineWithAccessCheck) |
| 2523 | QUICK_ENTRY_POINT_INFO(pInvokeVirtualTrampolineWithAccessCheck) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2524 | QUICK_ENTRY_POINT_INFO(pTestSuspend) |
| 2525 | QUICK_ENTRY_POINT_INFO(pDeliverException) |
| 2526 | QUICK_ENTRY_POINT_INFO(pThrowArrayBounds) |
| 2527 | QUICK_ENTRY_POINT_INFO(pThrowDivZero) |
| 2528 | QUICK_ENTRY_POINT_INFO(pThrowNoSuchMethod) |
| 2529 | QUICK_ENTRY_POINT_INFO(pThrowNullPointer) |
| 2530 | QUICK_ENTRY_POINT_INFO(pThrowStackOverflow) |
Mingyao Yang | d43b3ac | 2015-04-01 14:03:04 -0700 | [diff] [blame] | 2531 | QUICK_ENTRY_POINT_INFO(pDeoptimize) |
Douglas Leung | d9cb8ae | 2014-07-09 14:28:35 -0700 | [diff] [blame] | 2532 | QUICK_ENTRY_POINT_INFO(pA64Load) |
| 2533 | QUICK_ENTRY_POINT_INFO(pA64Store) |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 2534 | QUICK_ENTRY_POINT_INFO(pNewEmptyString) |
| 2535 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_B) |
| 2536 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_BI) |
| 2537 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_BII) |
| 2538 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_BIII) |
| 2539 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_BIIString) |
| 2540 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_BString) |
| 2541 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_BIICharset) |
| 2542 | QUICK_ENTRY_POINT_INFO(pNewStringFromBytes_BCharset) |
| 2543 | QUICK_ENTRY_POINT_INFO(pNewStringFromChars_C) |
| 2544 | QUICK_ENTRY_POINT_INFO(pNewStringFromChars_CII) |
| 2545 | QUICK_ENTRY_POINT_INFO(pNewStringFromChars_IIC) |
| 2546 | QUICK_ENTRY_POINT_INFO(pNewStringFromCodePoints) |
| 2547 | QUICK_ENTRY_POINT_INFO(pNewStringFromString) |
| 2548 | QUICK_ENTRY_POINT_INFO(pNewStringFromStringBuffer) |
| 2549 | QUICK_ENTRY_POINT_INFO(pNewStringFromStringBuilder) |
Hiroshi Yamauchi | 1cc71eb | 2015-05-07 10:47:27 -0700 | [diff] [blame] | 2550 | QUICK_ENTRY_POINT_INFO(pReadBarrierJni) |
Roland Levillain | 7c1559a | 2015-12-15 10:55:36 +0000 | [diff] [blame] | 2551 | QUICK_ENTRY_POINT_INFO(pReadBarrierMark) |
Man Cao | 1aee900 | 2015-07-14 22:31:42 -0700 | [diff] [blame] | 2552 | QUICK_ENTRY_POINT_INFO(pReadBarrierSlow) |
Roland Levillain | 0d5a281 | 2015-11-13 10:07:31 +0000 | [diff] [blame] | 2553 | QUICK_ENTRY_POINT_INFO(pReadBarrierForRootSlow) |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2554 | #undef QUICK_ENTRY_POINT_INFO |
| 2555 | |
Elliott Hughes | 98e2017 | 2012-04-24 15:38:13 -0700 | [diff] [blame] | 2556 | os << offset; |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 2557 | } |
| 2558 | |
jeffhao | 94d6df4 | 2012-11-26 16:02:12 -0800 | [diff] [blame] | 2559 | void Thread::QuickDeliverException() { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2560 | // Get exception from thread. |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2561 | mirror::Throwable* exception = GetException(); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2562 | CHECK(exception != nullptr); |
Sebastien Hertz | 520633b | 2015-09-08 17:03:36 +0200 | [diff] [blame] | 2563 | bool is_deoptimization = (exception == GetDeoptimizationException()); |
| 2564 | if (!is_deoptimization) { |
| 2565 | // This is a real exception: let the instrumentation know about it. |
| 2566 | instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| 2567 | if (instrumentation->HasExceptionCaughtListeners() && |
| 2568 | IsExceptionThrownByCurrentMethod(exception)) { |
| 2569 | // Instrumentation may cause GC so keep the exception object safe. |
| 2570 | StackHandleScope<1> hs(this); |
| 2571 | HandleWrapper<mirror::Throwable> h_exception(hs.NewHandleWrapper(&exception)); |
| 2572 | instrumentation->ExceptionCaughtEvent(this, exception); |
| 2573 | } |
| 2574 | // Does instrumentation need to deoptimize the stack? |
| 2575 | // Note: we do this *after* reporting the exception to instrumentation in case it |
| 2576 | // now requires deoptimization. It may happen if a debugger is attached and requests |
| 2577 | // new events (single-step, breakpoint, ...) when the exception is reported. |
| 2578 | is_deoptimization = Dbg::IsForcedInterpreterNeededForException(this); |
| 2579 | if (is_deoptimization) { |
| 2580 | // Save the exception into the deoptimization context so it can be restored |
| 2581 | // before entering the interpreter. |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 2582 | PushDeoptimizationContext( |
| 2583 | JValue(), /*is_reference */ false, /* from_code */ false, exception); |
Sebastien Hertz | 520633b | 2015-09-08 17:03:36 +0200 | [diff] [blame] | 2584 | } |
| 2585 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 2586 | // Don't leave exception visible while we try to find the handler, which may cause class |
Elliott Hughes | d07986f | 2011-12-06 18:27:45 -0800 | [diff] [blame] | 2587 | // resolution. |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 2588 | ClearException(); |
Sebastien Hertz | fd3077e | 2014-04-23 10:32:43 +0200 | [diff] [blame] | 2589 | QuickExceptionHandler exception_handler(this, is_deoptimization); |
| 2590 | if (is_deoptimization) { |
| 2591 | exception_handler.DeoptimizeStack(); |
| 2592 | } else { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 2593 | exception_handler.FindCatch(exception); |
Sebastien Hertz | fd3077e | 2014-04-23 10:32:43 +0200 | [diff] [blame] | 2594 | } |
| 2595 | exception_handler.UpdateInstrumentationStack(); |
| 2596 | exception_handler.DoLongJump(); |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 2597 | } |
| 2598 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 2599 | Context* Thread::GetLongJumpContext() { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2600 | Context* result = tlsPtr_.long_jump_context; |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2601 | if (result == nullptr) { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 2602 | result = Context::Create(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2603 | } else { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2604 | tlsPtr_.long_jump_context = nullptr; // Avoid context being shared. |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 2605 | result->Reset(); |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 2606 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 2607 | return result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 2608 | } |
| 2609 | |
Andreas Gampe | 4a8c3fa | 2014-07-16 22:20:31 -0700 | [diff] [blame] | 2610 | // Note: this visitor may return with a method set, but dex_pc_ being DexFile:kDexNoIndex. This is |
| 2611 | // so we don't abort in a special situation (thinlocked monitor) when dumping the Java stack. |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 2612 | struct CurrentMethodVisitor FINAL : public StackVisitor { |
Andreas Gampe | 6ec8ebd | 2014-07-25 13:36:56 -0700 | [diff] [blame] | 2613 | CurrentMethodVisitor(Thread* thread, Context* context, bool abort_on_error) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2614 | SHARED_REQUIRES(Locks::mutator_lock_) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 2615 | : StackVisitor(thread, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| 2616 | this_object_(nullptr), |
| 2617 | method_(nullptr), |
| 2618 | dex_pc_(0), |
Andreas Gampe | 6ec8ebd | 2014-07-25 13:36:56 -0700 | [diff] [blame] | 2619 | abort_on_error_(abort_on_error) {} |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2620 | bool VisitFrame() OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2621 | ArtMethod* m = GetMethod(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2622 | if (m->IsRuntimeMethod()) { |
| 2623 | // Continue if this is a runtime method. |
| 2624 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2625 | } |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2626 | if (context_ != nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2627 | this_object_ = GetThisObject(); |
| 2628 | } |
| 2629 | method_ = m; |
Andreas Gampe | 6ec8ebd | 2014-07-25 13:36:56 -0700 | [diff] [blame] | 2630 | dex_pc_ = GetDexPc(abort_on_error_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2631 | return false; |
| 2632 | } |
| 2633 | mirror::Object* this_object_; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2634 | ArtMethod* method_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2635 | uint32_t dex_pc_; |
Andreas Gampe | 6ec8ebd | 2014-07-25 13:36:56 -0700 | [diff] [blame] | 2636 | const bool abort_on_error_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2637 | }; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2638 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2639 | ArtMethod* Thread::GetCurrentMethod(uint32_t* dex_pc, bool abort_on_error) const { |
Andreas Gampe | 6ec8ebd | 2014-07-25 13:36:56 -0700 | [diff] [blame] | 2640 | CurrentMethodVisitor visitor(const_cast<Thread*>(this), nullptr, abort_on_error); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2641 | visitor.WalkStack(false); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2642 | if (dex_pc != nullptr) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2643 | *dex_pc = visitor.dex_pc_; |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 2644 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2645 | return visitor.method_; |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 2646 | } |
| 2647 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2648 | bool Thread::HoldsLock(mirror::Object* object) const { |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2649 | if (object == nullptr) { |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 2650 | return false; |
| 2651 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2652 | return object->GetLockOwnerThreadId() == GetThreadId(); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 2653 | } |
| 2654 | |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 2655 | // RootVisitor parameters are: (const Object* obj, size_t vreg, const StackVisitor* visitor). |
| 2656 | template <typename RootVisitor> |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2657 | class ReferenceMapVisitor : public StackVisitor { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 2658 | public: |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2659 | ReferenceMapVisitor(Thread* thread, Context* context, RootVisitor& visitor) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2660 | SHARED_REQUIRES(Locks::mutator_lock_) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 2661 | // We are visiting the references in compiled frames, so we do not need |
| 2662 | // to know the inlined frames. |
| 2663 | : StackVisitor(thread, context, StackVisitor::StackWalkKind::kSkipInlinedFrames), |
| 2664 | visitor_(visitor) {} |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 2665 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2666 | bool VisitFrame() SHARED_REQUIRES(Locks::mutator_lock_) { |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 2667 | if (false) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2668 | LOG(INFO) << "Visiting stack roots in " << PrettyMethod(GetMethod()) |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2669 | << StringPrintf("@ PC:%04x", GetDexPc()); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 2670 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2671 | ShadowFrame* shadow_frame = GetCurrentShadowFrame(); |
Dave Allison | 0aded08 | 2013-11-07 13:15:11 -0800 | [diff] [blame] | 2672 | if (shadow_frame != nullptr) { |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2673 | VisitShadowFrame(shadow_frame); |
| 2674 | } else { |
| 2675 | VisitQuickFrame(); |
| 2676 | } |
| 2677 | return true; |
| 2678 | } |
| 2679 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2680 | void VisitShadowFrame(ShadowFrame* shadow_frame) SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2681 | ArtMethod* m = shadow_frame->GetMethod(); |
Mathieu Chartier | 10e5ea9 | 2015-08-13 12:56:31 -0700 | [diff] [blame] | 2682 | VisitDeclaringClass(m); |
Hiroshi Yamauchi | 92d1a66 | 2014-05-15 21:43:59 -0700 | [diff] [blame] | 2683 | DCHECK(m != nullptr); |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2684 | size_t num_regs = shadow_frame->NumberOfVRegs(); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 2685 | DCHECK(m->IsNative() || shadow_frame->HasReferenceArray()); |
| 2686 | // handle scope for JNI or References for interpreter. |
| 2687 | for (size_t reg = 0; reg < num_regs; ++reg) { |
| 2688 | mirror::Object* ref = shadow_frame->GetVRegReference(reg); |
| 2689 | if (ref != nullptr) { |
| 2690 | mirror::Object* new_ref = ref; |
| 2691 | visitor_(&new_ref, reg, this); |
| 2692 | if (new_ref != ref) { |
| 2693 | shadow_frame->SetVRegReference(reg, new_ref); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 2694 | } |
| 2695 | } |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2696 | } |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 2697 | // Mark lock count map required for structured locking checks. |
| 2698 | shadow_frame->GetLockCountData().VisitMonitors(visitor_, -1, this); |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2699 | } |
| 2700 | |
| 2701 | private: |
Mathieu Chartier | 10e5ea9 | 2015-08-13 12:56:31 -0700 | [diff] [blame] | 2702 | // Visiting the declaring class is necessary so that we don't unload the class of a method that |
| 2703 | // is executing. We need to ensure that the code stays mapped. |
| 2704 | void VisitDeclaringClass(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | e7f75f3 | 2016-02-01 16:08:15 -0800 | [diff] [blame] | 2705 | mirror::Class* klass = method->GetDeclaringClassUnchecked<kWithoutReadBarrier>(); |
Mathieu Chartier | 10e5ea9 | 2015-08-13 12:56:31 -0700 | [diff] [blame] | 2706 | // klass can be null for runtime methods. |
| 2707 | if (klass != nullptr) { |
| 2708 | mirror::Object* new_ref = klass; |
| 2709 | visitor_(&new_ref, -1, this); |
| 2710 | if (new_ref != klass) { |
| 2711 | method->CASDeclaringClass(klass, new_ref->AsClass()); |
| 2712 | } |
| 2713 | } |
| 2714 | } |
| 2715 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2716 | void VisitQuickFrame() SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | 10e5ea9 | 2015-08-13 12:56:31 -0700 | [diff] [blame] | 2717 | ArtMethod** cur_quick_frame = GetCurrentQuickFrame(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2718 | DCHECK(cur_quick_frame != nullptr); |
Mathieu Chartier | 10e5ea9 | 2015-08-13 12:56:31 -0700 | [diff] [blame] | 2719 | ArtMethod* m = *cur_quick_frame; |
| 2720 | VisitDeclaringClass(m); |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 2721 | |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2722 | // Process register map (which native and runtime methods don't have) |
| 2723 | if (!m->IsNative() && !m->IsRuntimeMethod() && !m->IsProxyMethod()) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 2724 | const OatQuickMethodHeader* method_header = GetCurrentOatQuickMethodHeader(); |
| 2725 | if (method_header->IsOptimized()) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2726 | auto* vreg_base = reinterpret_cast<StackReference<mirror::Object>*>( |
| 2727 | reinterpret_cast<uintptr_t>(cur_quick_frame)); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 2728 | uintptr_t native_pc_offset = method_header->NativeQuickPcOffset(GetCurrentQuickFramePc()); |
| 2729 | CodeInfo code_info = method_header->GetOptimizedCodeInfo(); |
David Brazdil | f677ebf | 2015-05-29 16:29:43 +0100 | [diff] [blame] | 2730 | StackMapEncoding encoding = code_info.ExtractEncoding(); |
| 2731 | StackMap map = code_info.GetStackMapForNativePcOffset(native_pc_offset, encoding); |
Nicolas Geoffray | e12997f | 2015-05-22 14:01:33 +0100 | [diff] [blame] | 2732 | DCHECK(map.IsValid()); |
David Brazdil | f677ebf | 2015-05-29 16:29:43 +0100 | [diff] [blame] | 2733 | MemoryRegion mask = map.GetStackMask(encoding); |
Nicolas Geoffray | 9889396 | 2015-01-21 12:32:32 +0000 | [diff] [blame] | 2734 | // Visit stack entries that hold pointers. |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2735 | for (size_t i = 0; i < mask.size_in_bits(); ++i) { |
| 2736 | if (mask.LoadBit(i)) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 2737 | auto* ref_addr = vreg_base + i; |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2738 | mirror::Object* ref = ref_addr->AsMirrorPtr(); |
| 2739 | if (ref != nullptr) { |
| 2740 | mirror::Object* new_ref = ref; |
| 2741 | visitor_(&new_ref, -1, this); |
| 2742 | if (ref != new_ref) { |
| 2743 | ref_addr->Assign(new_ref); |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2744 | } |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2745 | } |
| 2746 | } |
| 2747 | } |
Nicolas Geoffray | 9889396 | 2015-01-21 12:32:32 +0000 | [diff] [blame] | 2748 | // Visit callee-save registers that hold pointers. |
David Brazdil | f677ebf | 2015-05-29 16:29:43 +0100 | [diff] [blame] | 2749 | uint32_t register_mask = map.GetRegisterMask(encoding); |
Nicolas Geoffray | 9889396 | 2015-01-21 12:32:32 +0000 | [diff] [blame] | 2750 | for (size_t i = 0; i < BitSizeOf<uint32_t>(); ++i) { |
| 2751 | if (register_mask & (1 << i)) { |
| 2752 | mirror::Object** ref_addr = reinterpret_cast<mirror::Object**>(GetGPRAddress(i)); |
| 2753 | if (*ref_addr != nullptr) { |
| 2754 | visitor_(ref_addr, -1, this); |
| 2755 | } |
| 2756 | } |
| 2757 | } |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2758 | } else { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 2759 | const uint8_t* native_gc_map = method_header->GetNativeGcMap(); |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2760 | CHECK(native_gc_map != nullptr) << PrettyMethod(m); |
| 2761 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 2762 | // Can't be null or how would we compile its instructions? |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2763 | DCHECK(code_item != nullptr) << PrettyMethod(m); |
| 2764 | NativePcOffsetToReferenceMap map(native_gc_map); |
Pavel Vyssotski | 41f9cc2 | 2015-06-16 17:57:37 +0600 | [diff] [blame] | 2765 | size_t num_regs = map.RegWidth() * 8; |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2766 | if (num_regs > 0) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 2767 | uintptr_t native_pc_offset = method_header->NativeQuickPcOffset(GetCurrentQuickFramePc()); |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2768 | const uint8_t* reg_bitmap = map.FindBitMap(native_pc_offset); |
| 2769 | DCHECK(reg_bitmap != nullptr); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 2770 | const VmapTable vmap_table(method_header->GetVmapTable()); |
| 2771 | QuickMethodFrameInfo frame_info = method_header->GetFrameInfo(); |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2772 | // For all dex registers in the bitmap |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2773 | DCHECK(cur_quick_frame != nullptr); |
| 2774 | for (size_t reg = 0; reg < num_regs; ++reg) { |
| 2775 | // Does this register hold a reference? |
| 2776 | if (TestBitmap(reg, reg_bitmap)) { |
| 2777 | uint32_t vmap_offset; |
| 2778 | if (vmap_table.IsInContext(reg, kReferenceVReg, &vmap_offset)) { |
| 2779 | int vmap_reg = vmap_table.ComputeRegister(frame_info.CoreSpillMask(), vmap_offset, |
| 2780 | kReferenceVReg); |
| 2781 | // This is sound as spilled GPRs will be word sized (ie 32 or 64bit). |
| 2782 | mirror::Object** ref_addr = |
| 2783 | reinterpret_cast<mirror::Object**>(GetGPRAddress(vmap_reg)); |
| 2784 | if (*ref_addr != nullptr) { |
| 2785 | visitor_(ref_addr, reg, this); |
| 2786 | } |
| 2787 | } else { |
| 2788 | StackReference<mirror::Object>* ref_addr = |
Nicolas Geoffray | 15b9d52 | 2015-03-12 15:05:13 +0000 | [diff] [blame] | 2789 | reinterpret_cast<StackReference<mirror::Object>*>(GetVRegAddrFromQuickCode( |
| 2790 | cur_quick_frame, code_item, frame_info.CoreSpillMask(), |
| 2791 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), reg)); |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 2792 | mirror::Object* ref = ref_addr->AsMirrorPtr(); |
| 2793 | if (ref != nullptr) { |
| 2794 | mirror::Object* new_ref = ref; |
| 2795 | visitor_(&new_ref, reg, this); |
| 2796 | if (ref != new_ref) { |
| 2797 | ref_addr->Assign(new_ref); |
| 2798 | } |
Mathieu Chartier | 423d2a3 | 2013-09-12 17:33:56 -0700 | [diff] [blame] | 2799 | } |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 2800 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2801 | } |
Shih-wei Liao | 4f894e3 | 2011-09-27 21:33:19 -0700 | [diff] [blame] | 2802 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 2803 | } |
| 2804 | } |
| 2805 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 2806 | } |
| 2807 | |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2808 | // Visitor for when we visit a root. |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2809 | RootVisitor& visitor_; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 2810 | }; |
| 2811 | |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2812 | class RootCallbackVisitor { |
| 2813 | public: |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2814 | RootCallbackVisitor(RootVisitor* visitor, uint32_t tid) : visitor_(visitor), tid_(tid) {} |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2815 | |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2816 | void operator()(mirror::Object** obj, size_t vreg, const StackVisitor* stack_visitor) const |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2817 | SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2818 | visitor_->VisitRoot(obj, JavaFrameRootInfo(tid_, stack_visitor, vreg)); |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2819 | } |
| 2820 | |
| 2821 | private: |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2822 | RootVisitor* const visitor_; |
Mathieu Chartier | 83c8ee0 | 2014-01-28 14:50:23 -0800 | [diff] [blame] | 2823 | const uint32_t tid_; |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 2824 | }; |
| 2825 | |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2826 | void Thread::VisitRoots(RootVisitor* visitor) { |
| 2827 | const uint32_t thread_id = GetThreadId(); |
| 2828 | visitor->VisitRootIfNonNull(&tlsPtr_.opeer, RootInfo(kRootThreadObject, thread_id)); |
Sebastien Hertz | fd3077e | 2014-04-23 10:32:43 +0200 | [diff] [blame] | 2829 | if (tlsPtr_.exception != nullptr && tlsPtr_.exception != GetDeoptimizationException()) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2830 | visitor->VisitRoot(reinterpret_cast<mirror::Object**>(&tlsPtr_.exception), |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 2831 | RootInfo(kRootNativeStack, thread_id)); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 2832 | } |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2833 | visitor->VisitRootIfNonNull(&tlsPtr_.monitor_enter_object, RootInfo(kRootNativeStack, thread_id)); |
| 2834 | tlsPtr_.jni_env->locals.VisitRoots(visitor, RootInfo(kRootJNILocal, thread_id)); |
| 2835 | tlsPtr_.jni_env->monitors.VisitRoots(visitor, RootInfo(kRootJNIMonitor, thread_id)); |
| 2836 | HandleScopeVisitRoots(visitor, thread_id); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2837 | if (tlsPtr_.debug_invoke_req != nullptr) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2838 | tlsPtr_.debug_invoke_req->VisitRoots(visitor, RootInfo(kRootDebugger, thread_id)); |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 2839 | } |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 2840 | // Visit roots for deoptimization. |
Mingyao Yang | 1f2d3ba | 2015-05-18 12:12:50 -0700 | [diff] [blame] | 2841 | if (tlsPtr_.stacked_shadow_frame_record != nullptr) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2842 | RootCallbackVisitor visitor_to_callback(visitor, thread_id); |
| 2843 | ReferenceMapVisitor<RootCallbackVisitor> mapper(this, nullptr, visitor_to_callback); |
Mingyao Yang | 1f2d3ba | 2015-05-18 12:12:50 -0700 | [diff] [blame] | 2844 | for (StackedShadowFrameRecord* record = tlsPtr_.stacked_shadow_frame_record; |
| 2845 | record != nullptr; |
| 2846 | record = record->GetLink()) { |
| 2847 | for (ShadowFrame* shadow_frame = record->GetShadowFrame(); |
| 2848 | shadow_frame != nullptr; |
| 2849 | shadow_frame = shadow_frame->GetLink()) { |
| 2850 | mapper.VisitShadowFrame(shadow_frame); |
| 2851 | } |
Sebastien Hertz | 714f175 | 2014-04-28 15:03:08 +0200 | [diff] [blame] | 2852 | } |
| 2853 | } |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 2854 | for (DeoptimizationContextRecord* record = tlsPtr_.deoptimization_context_stack; |
| 2855 | record != nullptr; |
| 2856 | record = record->GetLink()) { |
| 2857 | if (record->IsReference()) { |
| 2858 | visitor->VisitRootIfNonNull(record->GetReturnValueAsGCRoot(), |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 2859 | RootInfo(kRootThreadObject, thread_id)); |
Andreas Gampe | 2a0d4ec | 2014-06-02 22:05:22 -0700 | [diff] [blame] | 2860 | } |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 2861 | visitor->VisitRootIfNonNull(record->GetPendingExceptionAsGCRoot(), |
| 2862 | RootInfo(kRootThreadObject, thread_id)); |
| 2863 | } |
| 2864 | if (tlsPtr_.frame_id_to_shadow_frame != nullptr) { |
| 2865 | RootCallbackVisitor visitor_to_callback(visitor, thread_id); |
| 2866 | ReferenceMapVisitor<RootCallbackVisitor> mapper(this, nullptr, visitor_to_callback); |
| 2867 | for (FrameIdToShadowFrame* record = tlsPtr_.frame_id_to_shadow_frame; |
| 2868 | record != nullptr; |
| 2869 | record = record->GetNext()) { |
| 2870 | mapper.VisitShadowFrame(record->GetShadowFrame()); |
| 2871 | } |
Andreas Gampe | 2a0d4ec | 2014-06-02 22:05:22 -0700 | [diff] [blame] | 2872 | } |
Mathieu Chartier | d0ad2ee | 2015-03-31 14:59:59 -0700 | [diff] [blame] | 2873 | for (auto* verifier = tlsPtr_.method_verifier; verifier != nullptr; verifier = verifier->link_) { |
| 2874 | verifier->VisitRoots(visitor, RootInfo(kRootNativeStack, thread_id)); |
Mathieu Chartier | 12d625f | 2015-03-13 11:33:37 -0700 | [diff] [blame] | 2875 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 2876 | // Visit roots on this thread's stack |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2877 | Context* context = GetLongJumpContext(); |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2878 | RootCallbackVisitor visitor_to_callback(visitor, thread_id); |
Mathieu Chartier | e34fa1d | 2015-01-14 14:55:47 -0800 | [diff] [blame] | 2879 | ReferenceMapVisitor<RootCallbackVisitor> mapper(this, context, visitor_to_callback); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2880 | mapper.WalkStack(); |
| 2881 | ReleaseLongJumpContext(context); |
Mathieu Chartier | 423d2a3 | 2013-09-12 17:33:56 -0700 | [diff] [blame] | 2882 | for (instrumentation::InstrumentationStackFrame& frame : *GetInstrumentationStack()) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2883 | visitor->VisitRootIfNonNull(&frame.this_object_, RootInfo(kRootVMInternal, thread_id)); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 2884 | } |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 2885 | } |
| 2886 | |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2887 | class VerifyRootVisitor : public SingleRootVisitor { |
| 2888 | public: |
| 2889 | void VisitRoot(mirror::Object* root, const RootInfo& info ATTRIBUTE_UNUSED) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 2890 | OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_) { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2891 | VerifyObject(root); |
| 2892 | } |
| 2893 | }; |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 2894 | |
Ian Rogers | 04d7aa9 | 2013-03-16 14:29:17 -0700 | [diff] [blame] | 2895 | void Thread::VerifyStackImpl() { |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2896 | VerifyRootVisitor visitor; |
Ian Rogers | 700a402 | 2014-05-19 16:49:03 -0700 | [diff] [blame] | 2897 | std::unique_ptr<Context> context(Context::Create()); |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 2898 | RootCallbackVisitor visitor_to_callback(&visitor, GetThreadId()); |
| 2899 | ReferenceMapVisitor<RootCallbackVisitor> mapper(this, context.get(), visitor_to_callback); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 2900 | mapper.WalkStack(); |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 2901 | } |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 2902 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2903 | // Set the stack end to that to be used during a stack overflow |
| 2904 | void Thread::SetStackEndForStackOverflow() { |
Brian Carlstrom | 7571e8b | 2013-08-12 17:04:14 -0700 | [diff] [blame] | 2905 | // During stack overflow we allow use of the full stack. |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2906 | if (tlsPtr_.stack_end == tlsPtr_.stack_begin) { |
Brian Carlstrom | 7571e8b | 2013-08-12 17:04:14 -0700 | [diff] [blame] | 2907 | // However, we seem to have already extended to use the full stack. |
| 2908 | LOG(ERROR) << "Need to increase kStackOverflowReservedBytes (currently " |
Andreas Gampe | 7ea6f79 | 2014-07-14 16:21:44 -0700 | [diff] [blame] | 2909 | << GetStackOverflowReservedBytes(kRuntimeISA) << ")?"; |
Brian Carlstrom | 7571e8b | 2013-08-12 17:04:14 -0700 | [diff] [blame] | 2910 | DumpStack(LOG(ERROR)); |
| 2911 | LOG(FATAL) << "Recursive stack overflow."; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2912 | } |
| 2913 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2914 | tlsPtr_.stack_end = tlsPtr_.stack_begin; |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 2915 | |
| 2916 | // Remove the stack overflow protection if is it set up. |
| 2917 | bool implicit_stack_check = !Runtime::Current()->ExplicitStackOverflowChecks(); |
| 2918 | if (implicit_stack_check) { |
| 2919 | if (!UnprotectStack()) { |
| 2920 | LOG(ERROR) << "Unable to remove stack protection for stack overflow"; |
| 2921 | } |
| 2922 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2923 | } |
| 2924 | |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 2925 | void Thread::SetTlab(uint8_t* start, uint8_t* end) { |
Mathieu Chartier | 692fafd | 2013-11-29 17:24:40 -0800 | [diff] [blame] | 2926 | DCHECK_LE(start, end); |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2927 | tlsPtr_.thread_local_start = start; |
| 2928 | tlsPtr_.thread_local_pos = tlsPtr_.thread_local_start; |
| 2929 | tlsPtr_.thread_local_end = end; |
| 2930 | tlsPtr_.thread_local_objects = 0; |
Mathieu Chartier | 692fafd | 2013-11-29 17:24:40 -0800 | [diff] [blame] | 2931 | } |
| 2932 | |
Hiroshi Yamauchi | c93c530 | 2014-03-20 16:15:37 -0700 | [diff] [blame] | 2933 | bool Thread::HasTlab() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2934 | bool has_tlab = tlsPtr_.thread_local_pos != nullptr; |
Hiroshi Yamauchi | c93c530 | 2014-03-20 16:15:37 -0700 | [diff] [blame] | 2935 | if (has_tlab) { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2936 | DCHECK(tlsPtr_.thread_local_start != nullptr && tlsPtr_.thread_local_end != nullptr); |
Hiroshi Yamauchi | c93c530 | 2014-03-20 16:15:37 -0700 | [diff] [blame] | 2937 | } else { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 2938 | DCHECK(tlsPtr_.thread_local_start == nullptr && tlsPtr_.thread_local_end == nullptr); |
Hiroshi Yamauchi | c93c530 | 2014-03-20 16:15:37 -0700 | [diff] [blame] | 2939 | } |
| 2940 | return has_tlab; |
| 2941 | } |
| 2942 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 2943 | std::ostream& operator<<(std::ostream& os, const Thread& thread) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 2944 | thread.ShortDump(os); |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 2945 | return os; |
| 2946 | } |
| 2947 | |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 2948 | void Thread::ProtectStack() { |
| 2949 | void* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize; |
| 2950 | VLOG(threads) << "Protecting stack at " << pregion; |
| 2951 | if (mprotect(pregion, kStackOverflowProtectedSize, PROT_NONE) == -1) { |
| 2952 | LOG(FATAL) << "Unable to create protected region in stack for implicit overflow check. " |
| 2953 | "Reason: " |
| 2954 | << strerror(errno) << " size: " << kStackOverflowProtectedSize; |
| 2955 | } |
| 2956 | } |
| 2957 | |
| 2958 | bool Thread::UnprotectStack() { |
| 2959 | void* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize; |
| 2960 | VLOG(threads) << "Unprotecting stack at " << pregion; |
| 2961 | return mprotect(pregion, kStackOverflowProtectedSize, PROT_READ|PROT_WRITE) == 0; |
| 2962 | } |
| 2963 | |
Sebastien Hertz | 597c4f0 | 2015-01-26 17:37:14 +0100 | [diff] [blame] | 2964 | void Thread::ActivateSingleStepControl(SingleStepControl* ssc) { |
| 2965 | CHECK(Dbg::IsDebuggerActive()); |
| 2966 | CHECK(GetSingleStepControl() == nullptr) << "Single step already active in thread " << *this; |
| 2967 | CHECK(ssc != nullptr); |
| 2968 | tlsPtr_.single_step_control = ssc; |
| 2969 | } |
| 2970 | |
| 2971 | void Thread::DeactivateSingleStepControl() { |
| 2972 | CHECK(Dbg::IsDebuggerActive()); |
| 2973 | CHECK(GetSingleStepControl() != nullptr) << "Single step not active in thread " << *this; |
| 2974 | SingleStepControl* ssc = GetSingleStepControl(); |
| 2975 | tlsPtr_.single_step_control = nullptr; |
| 2976 | delete ssc; |
| 2977 | } |
Dave Allison | 648d711 | 2014-07-25 16:15:27 -0700 | [diff] [blame] | 2978 | |
Sebastien Hertz | 1558b57 | 2015-02-25 15:05:59 +0100 | [diff] [blame] | 2979 | void Thread::SetDebugInvokeReq(DebugInvokeReq* req) { |
| 2980 | CHECK(Dbg::IsDebuggerActive()); |
| 2981 | CHECK(GetInvokeReq() == nullptr) << "Debug invoke req already active in thread " << *this; |
| 2982 | CHECK(Thread::Current() != this) << "Debug invoke can't be dispatched by the thread itself"; |
| 2983 | CHECK(req != nullptr); |
| 2984 | tlsPtr_.debug_invoke_req = req; |
| 2985 | } |
| 2986 | |
| 2987 | void Thread::ClearDebugInvokeReq() { |
Sebastien Hertz | 1558b57 | 2015-02-25 15:05:59 +0100 | [diff] [blame] | 2988 | CHECK(GetInvokeReq() != nullptr) << "Debug invoke req not active in thread " << *this; |
| 2989 | CHECK(Thread::Current() == this) << "Debug invoke must be finished by the thread itself"; |
Sebastien Hertz | cbc5064 | 2015-06-01 17:33:12 +0200 | [diff] [blame] | 2990 | DebugInvokeReq* req = tlsPtr_.debug_invoke_req; |
Sebastien Hertz | 1558b57 | 2015-02-25 15:05:59 +0100 | [diff] [blame] | 2991 | tlsPtr_.debug_invoke_req = nullptr; |
Sebastien Hertz | cbc5064 | 2015-06-01 17:33:12 +0200 | [diff] [blame] | 2992 | delete req; |
Sebastien Hertz | 1558b57 | 2015-02-25 15:05:59 +0100 | [diff] [blame] | 2993 | } |
| 2994 | |
Mathieu Chartier | d0ad2ee | 2015-03-31 14:59:59 -0700 | [diff] [blame] | 2995 | void Thread::PushVerifier(verifier::MethodVerifier* verifier) { |
| 2996 | verifier->link_ = tlsPtr_.method_verifier; |
Mathieu Chartier | 12d625f | 2015-03-13 11:33:37 -0700 | [diff] [blame] | 2997 | tlsPtr_.method_verifier = verifier; |
| 2998 | } |
| 2999 | |
Mathieu Chartier | d0ad2ee | 2015-03-31 14:59:59 -0700 | [diff] [blame] | 3000 | void Thread::PopVerifier(verifier::MethodVerifier* verifier) { |
Mathieu Chartier | 12d625f | 2015-03-13 11:33:37 -0700 | [diff] [blame] | 3001 | CHECK_EQ(tlsPtr_.method_verifier, verifier); |
Mathieu Chartier | d0ad2ee | 2015-03-31 14:59:59 -0700 | [diff] [blame] | 3002 | tlsPtr_.method_verifier = verifier->link_; |
Mathieu Chartier | 12d625f | 2015-03-13 11:33:37 -0700 | [diff] [blame] | 3003 | } |
| 3004 | |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 3005 | size_t Thread::NumberOfHeldMutexes() const { |
| 3006 | size_t count = 0; |
| 3007 | for (BaseMutex* mu : tlsPtr_.held_mutexes) { |
Mathieu Chartier | 90ef3db | 2015-08-04 15:19:41 -0700 | [diff] [blame] | 3008 | count += mu != nullptr ? 1 : 0; |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 3009 | } |
| 3010 | return count; |
| 3011 | } |
| 3012 | |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 3013 | |
| 3014 | void Thread::DeoptimizeWithDeoptimizationException(JValue* result) { |
| 3015 | DCHECK_EQ(GetException(), Thread::GetDeoptimizationException()); |
| 3016 | ClearException(); |
| 3017 | ShadowFrame* shadow_frame = |
| 3018 | PopStackedShadowFrame(StackedShadowFrameType::kDeoptimizationShadowFrame); |
| 3019 | mirror::Throwable* pending_exception = nullptr; |
| 3020 | bool from_code = false; |
| 3021 | PopDeoptimizationContext(result, &pending_exception, &from_code); |
| 3022 | CHECK(!from_code) << "Deoptimizing from code should be done with single frame deoptimization"; |
| 3023 | SetTopOfStack(nullptr); |
| 3024 | SetTopOfShadowStack(shadow_frame); |
| 3025 | |
| 3026 | // Restore the exception that was pending before deoptimization then interpret the |
| 3027 | // deoptimized frames. |
| 3028 | if (pending_exception != nullptr) { |
| 3029 | SetException(pending_exception); |
| 3030 | } |
| 3031 | interpreter::EnterInterpreterFromDeoptimize(this, shadow_frame, from_code, result); |
| 3032 | } |
| 3033 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 3034 | } // namespace art |