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48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
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// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/trace_event/java_heap_dump_provider_android.h"
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#include "base/android/java_runtime.h"
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#include "base/trace_event/process_memory_dump.h"
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namespace base {
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namespace trace_event {
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// static
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JavaHeapDumpProvider* JavaHeapDumpProvider::GetInstance() {
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return Singleton<JavaHeapDumpProvider,
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LeakySingletonTraits<JavaHeapDumpProvider>>::get();
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}
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JavaHeapDumpProvider::JavaHeapDumpProvider() {
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}
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JavaHeapDumpProvider::~JavaHeapDumpProvider() {
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}
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// Called at trace dump point time. Creates a snapshot with the memory counters
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// for the current process.
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bool JavaHeapDumpProvider::OnMemoryDump(const MemoryDumpArgs& args,
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ProcessMemoryDump* pmd) {
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// These numbers come from java.lang.Runtime stats.
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long total_heap_size = 0;
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long free_heap_size = 0;
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android::JavaRuntime::GetMemoryUsage(&total_heap_size, &free_heap_size);
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MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("java_heap");
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outer_dump->AddScalar(MemoryAllocatorDump::kNameSize,
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MemoryAllocatorDump::kUnitsBytes, total_heap_size);
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MemoryAllocatorDump* inner_dump =
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pmd->CreateAllocatorDump("java_heap/allocated_objects");
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inner_dump->AddScalar(MemoryAllocatorDump::kNameSize,
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MemoryAllocatorDump::kUnitsBytes,
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total_heap_size - free_heap_size);
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return true;
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}
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} // namespace trace_event
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} // namespace base
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