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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_TRACING_GRAPHICS_MEMORY_DUMP_PROVIDER_ANDROID_H_
#define COMPONENTS_TRACING_GRAPHICS_MEMORY_DUMP_PROVIDER_ANDROID_H_
#include <stddef.h>
#include <string>
#include "base/containers/hash_tables.h"
#include "base/gtest_prod_util.h"
#include "base/macros.h"
#include "base/memory/singleton.h"
#include "base/trace_event/memory_dump_provider.h"
#include "components/tracing/tracing_export.h"
namespace tracing {
// Dump provider which collects memory stats about graphics memory on Android.
// This requires the presence of the memtrack_helper daemon, which must be
// executed separetely via a (root) adb shell command. The dump provider will
// fail (and hence disabled by the MemoryDumpManager) in absence of the helper.
// See the design-doc https://goo.gl/4Y30p9 for more details.
class TRACING_EXPORT GraphicsMemoryDumpProvider
: public base::trace_event::MemoryDumpProvider {
public:
static GraphicsMemoryDumpProvider* GetInstance();
// MemoryDumpProvider implementation.
bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
base::trace_event::ProcessMemoryDump* pmd) override;
private:
FRIEND_TEST_ALL_PREFIXES(GraphicsMemoryDumpProviderTest, ParseResponse);
friend struct base::DefaultSingletonTraits<GraphicsMemoryDumpProvider>;
void ParseResponseAndAddToDump(const char* buf,
size_t length,
base::trace_event::ProcessMemoryDump* pmd);
GraphicsMemoryDumpProvider();
~GraphicsMemoryDumpProvider() override;
static const char kDumpBaseName[]; // Used by the unittest.
// Stores key names coming from the memtrack helper in long-lived storage.
// This is to allow using cheap char* strings in tracing without copies.
base::hash_set<std::string> key_names_;
DISALLOW_COPY_AND_ASSIGN(GraphicsMemoryDumpProvider);
};
} // namespace tracing
#endif // COMPONENTS_TRACING_GRAPHICS_MEMORY_DUMP_PROVIDER_ANDROID_H_
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