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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/trace_event/java_heap_dump_provider_android.h"
#include "base/android/java_runtime.h"
#include "base/trace_event/process_memory_dump.h"
namespace base {
namespace trace_event {
// static
JavaHeapDumpProvider* JavaHeapDumpProvider::GetInstance() {
return Singleton<JavaHeapDumpProvider,
LeakySingletonTraits<JavaHeapDumpProvider>>::get();
}
// Called at trace dump point time. Creates a snapshot with the memory counters
// for the current process.
bool JavaHeapDumpProvider::OnMemoryDump(const MemoryDumpArgs& args,
ProcessMemoryDump* pmd) {
// These numbers come from java.lang.Runtime stats.
uint64_t total_heap_size = 0;
uint64_t free_heap_size = 0;
android::JavaRuntime::GetMemoryUsage(&total_heap_size, &free_heap_size);
MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("java_heap");
outer_dump->AddScalar(MemoryAllocatorDump::kNameSize,
MemoryAllocatorDump::kUnitsBytes, total_heap_size);
MemoryAllocatorDump* inner_dump =
pmd->CreateAllocatorDump("java_heap/allocated_objects");
inner_dump->AddScalar(MemoryAllocatorDump::kNameSize,
MemoryAllocatorDump::kUnitsBytes,
total_heap_size - free_heap_size);
return true;
}
} // namespace trace_event
} // namespace base
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