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// Copyright (c) 2010 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 REMOTING_PROTOCOL_BUFFERED_SOCKET_WRITER_H_
#define REMOTING_PROTOCOL_BUFFERED_SOCKET_WRITER_H_
#include <deque>
#include "base/lock.h"
#include "base/ref_counted.h"
#include "net/base/io_buffer.h"
#include "net/socket/socket.h"
class MessageLoop;
namespace net {
class Socket;
} // namespace net
namespace remoting {
class BufferedSocketWriter
: public base::RefCountedThreadSafe<BufferedSocketWriter> {
public:
typedef Callback1<int>::Type WriteFailedCallback;
BufferedSocketWriter();
virtual ~BufferedSocketWriter();
// Initializes the writer. Must be called on the thread that will be used
// to access the socket in the future. |callback| will be called after each
// failed write.
void Init(net::Socket* socket, WriteFailedCallback* callback);
// Puts a new data chunk in the buffer. Returns false and doesn't enqueue
// the data if called before Init(). Can be called on any thread.
bool Write(scoped_refptr<net::IOBufferWithSize> buffer);
// Returns current size of the buffer. Can be called on any thread.
int GetBufferSize();
// Returns number of chunks that are currently in the buffer waiting
// to be written. Can be called on any thread.
int GetBufferChunks();
// Stops writing and drops current buffers.
void Close();
private:
typedef std::deque<scoped_refptr<net::IOBufferWithSize> > DataQueue;
void DoWrite();
void OnWritten(int result);
net::Socket* socket_;
MessageLoop* message_loop_;
scoped_ptr<WriteFailedCallback> write_failed_callback_;
Lock lock_;
DataQueue queue_;
int buffer_size_;
scoped_refptr<net::DrainableIOBuffer> current_buf_;
bool write_pending_;
net::CompletionCallbackImpl<BufferedSocketWriter> written_callback_;
bool closed_;
};
} // namespace remoting
#endif // REMOTING_PROTOCOL_BUFFERED_SOCKET_WRITER_H_
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