Move long-running calls to async with listeners.

Now that we're using Binder, we can have callers provide explicit
listeners for every request instead of trying to squeeze them all
into unsolicited socket events.

Move benchmarking to be async to avoid blocking other commands for
up to several minutes.  Remove post-trim benchmarking flag, since
benchmarking now requires a separate callback.  Will bring back in
a future CL.

Test: cts-tradefed run commandAndExit cts-dev -m CtsAppSecurityHostTestCases -t android.appsecurity.cts.AdoptableHostTest
Test: adb shell sm fstrim
Bug: 62201209, 13758960
Change-Id: I0f2ebf1ac3b4252ecd6b44303f2887adfdb58e86
diff --git a/BenchmarkTask.h b/BenchmarkTask.h
new file mode 100644
index 0000000..dfa3922
--- /dev/null
+++ b/BenchmarkTask.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2015 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_VOLD_BENCHMARK_TASK_H
+#define ANDROID_VOLD_BENCHMARK_TASK_H
+
+#include "android/os/IVoldTaskListener.h"
+#include "Utils.h"
+
+#include <string>
+#include <thread>
+
+namespace android {
+namespace vold {
+
+class BenchmarkTask {
+public:
+    BenchmarkTask(const std::string& path,
+            const android::sp<android::os::IVoldTaskListener>& listener);
+    virtual ~BenchmarkTask();
+
+    void start();
+
+private:
+    std::string mPath;
+    android::sp<android::os::IVoldTaskListener> mListener;
+    std::thread mThread;
+
+    void run();
+
+    DISALLOW_COPY_AND_ASSIGN(BenchmarkTask);
+};
+
+}  // namespace vold
+}  // namespace android
+
+#endif