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// Copyright 2014 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 MOJO_COMMON_ENVIRONMENT_DATA_H_
#define MOJO_COMMON_ENVIRONMENT_DATA_H_
#include <map>
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "mojo/common/mojo_common_export.h"
namespace mojo {
namespace common {
// EnvironmentData is used to store arbitrary key/value pairs in the
// environment. The key/value pairs are owned by the Environment and deleted
// when it is deleted.
class MOJO_COMMON_EXPORT EnvironmentData {
public:
class MOJO_COMMON_EXPORT Data {
public:
Data() {}
virtual ~Data() {}
};
EnvironmentData();
~EnvironmentData();
static EnvironmentData* GetInstance();
void SetData(const void* key, scoped_ptr<Data> data);
Data* GetData(const void* key);
private:
typedef std::map<const void*, Data*> DataMap;
static EnvironmentData* instance_;
base::Lock data_lock_;
DataMap data_map_;
DISALLOW_COPY_AND_ASSIGN(EnvironmentData);
};
} // namespace common
} // namespace mojo
#endif // MOJO_COMMON_ENVIRONMENT_DATA_H_
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