auto import from //depot/cupcake/@135843
diff --git a/include/utils/MemoryHeapBase.h b/include/utils/MemoryHeapBase.h
new file mode 100644
index 0000000..574acf4
--- /dev/null
+++ b/include/utils/MemoryHeapBase.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_MEMORY_HEAP_BASE_H
+#define ANDROID_MEMORY_HEAP_BASE_H
+
+#include <stdlib.h>
+#include <stdint.h>
+
+#include <utils/IMemory.h>
+
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class MemoryHeapBase : public virtual BnMemoryHeap
+{
+public:
+ enum {
+ READ_ONLY = IMemoryHeap::READ_ONLY,
+ MAP_ONCE = IMemoryHeap::MAP_ONCE,
+ // memory won't be mapped locally, but will be mapped in the remote
+ // process.
+ DONT_MAP_LOCALLY = 0x00000100
+ };
+
+ /*
+ * maps the memory referenced by fd. but DOESN'T take ownership
+ * of the filedescriptor (it makes a copy with dup()
+ */
+ MemoryHeapBase(int fd, size_t size, uint32_t flags = 0);
+
+ /*
+ * maps memory from the given device
+ */
+ MemoryHeapBase(const char* device, size_t size = 0, uint32_t flags = 0);
+
+ /*
+ * maps memory from ashmem, with the given name for debugging
+ */
+ MemoryHeapBase(size_t size, uint32_t flags = 0, char const* name = NULL);
+
+ virtual ~MemoryHeapBase();
+
+ /* implement IMemoryHeap interface */
+ virtual int getHeapID() const;
+ virtual void* getBase() const;
+ virtual size_t getSize() const;
+ virtual uint32_t getFlags() const;
+
+ const char* getDevice() const;
+
+ /* this closes this heap -- use carefully */
+ void dispose();
+
+ /* this is only needed as a workaround, use only if you know
+ * what you are doing */
+ status_t setDevice(const char* device) {
+ if (mDevice == 0)
+ mDevice = device;
+ return mDevice ? NO_ERROR : ALREADY_EXISTS;
+ }
+
+protected:
+ MemoryHeapBase();
+ // init() takes ownership of fd
+ status_t init(int fd, void *base, int size,
+ int flags = 0, const char* device = NULL);
+
+private:
+ status_t mapfd(int fd, size_t size);
+
+ int mFD;
+ size_t mSize;
+ void* mBase;
+ uint32_t mFlags;
+ const char* mDevice;
+ bool mNeedUnmap;
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_MEMORY_HEAP_BASE_H