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// Copyright 2013 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 CONTENT_CHILD_QUOTA_MESSAGE_FILTER_H_
#define CONTENT_CHILD_QUOTA_MESSAGE_FILTER_H_
#include <map>
#include "base/synchronization/lock.h"
#include "content/child/child_message_filter.h"
namespace base {
class MessageLoopProxy;
}
namespace content {
class ThreadSafeSender;
class QuotaMessageFilter : public ChildMessageFilter {
public:
explicit QuotaMessageFilter(ThreadSafeSender* thread_safe_sender);
// Generates a new request_id, registers { request_id, thread_id } map to
// the message filter and returns the request_id.
// This method can be called on any thread.
int GenerateRequestID(int thread_id);
// Clears all requests from the thread_id.
void ClearThreadRequests(int thread_id);
protected:
virtual ~QuotaMessageFilter();
private:
// ChildMessageFilter implementation:
virtual base::TaskRunner* OverrideTaskRunnerForMessage(
const IPC::Message& msg) OVERRIDE;
virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
typedef std::map<int, int> RequestIdToThreadId;
scoped_refptr<base::MessageLoopProxy> main_thread_loop_proxy_;
scoped_refptr<ThreadSafeSender> thread_safe_sender_;
base::Lock request_id_map_lock_;
RequestIdToThreadId request_id_map_;
int next_request_id_;
DISALLOW_COPY_AND_ASSIGN(QuotaMessageFilter);
};
} // namespace content
#endif // CONTENT_CHILD_QUOTA_MESSAGE_FILTER_H_
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