// 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 SQL_SQL_MEMORY_DUMP_PROVIDER_H_

#define SQL_SQL_MEMORY_DUMP_PROVIDER_H_

#include "base/component_export.h"

#include "base/memory/singleton.h"

#include "base/trace_event/memory_dump_provider.h"

namespace sql {

// Adds process-wide memory usage statistics about sqlite to chrome://tracing.

// sql::Database::OnMemoryDump adds per-connection memory statistics.

class COMPONENT_EXPORT(SQL) SqlMemoryDumpProvider

: public base::trace_event::MemoryDumpProvider {

public:

static SqlMemoryDumpProvider* GetInstance();

SqlMemoryDumpProvider(const SqlMemoryDumpProvider&) = delete;

SqlMemoryDumpProvider& operator=(const SqlMemoryDumpProvider&) = delete;

// MemoryDumpProvider implementation.

bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,

base::trace_event::ProcessMemoryDump* pmd) override;

private:

friend struct base::DefaultSingletonTraits<SqlMemoryDumpProvider>;

SqlMemoryDumpProvider();

~SqlMemoryDumpProvider() override;

};

} // namespace sql

#endif // SQL_SQL_MEMORY_DUMP_PROVIDER_H_