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+// Copyright (c) 2011 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 IPC_IPC_CHANNEL_WIN_H_
+#define IPC_IPC_CHANNEL_WIN_H_
+#pragma once
+
+#include "ipc/ipc_channel.h"
+
+#include <queue>
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
+
+namespace base {
+class NonThreadSafe;
+}
+
+namespace IPC {
+
+class Channel::ChannelImpl : public MessageLoopForIO::IOHandler {
+ public:
+ // Mirror methods of Channel, see ipc_channel.h for description.
+ ChannelImpl(const IPC::ChannelHandle &channel_handle, Mode mode,
+ Listener* listener);
+ ~ChannelImpl();
+ bool Connect();
+ void Close();
+ void set_listener(Listener* listener) { listener_ = listener; }
+ bool Send(Message* message);
+ static bool IsNamedServerInitialized(const std::string& channel_id);
+ private:
+ static const std::wstring PipeName(const std::string& channel_id);
+ bool CreatePipe(const IPC::ChannelHandle &channel_handle, Mode mode);
+
+ bool ProcessConnection();
+ bool ProcessIncomingMessages(MessageLoopForIO::IOContext* context,
+ DWORD bytes_read);
+ bool ProcessOutgoingMessages(MessageLoopForIO::IOContext* context,
+ DWORD bytes_written);
+
+ // MessageLoop::IOHandler implementation.
+ virtual void OnIOCompleted(MessageLoopForIO::IOContext* context,
+ DWORD bytes_transfered, DWORD error);
+ private:
+ struct State {
+ explicit State(ChannelImpl* channel);
+ ~State();
+ MessageLoopForIO::IOContext context;
+ bool is_pending;
+ };
+
+ State input_state_;
+ State output_state_;
+
+ HANDLE pipe_;
+
+ Listener* listener_;
+
+ // Messages to be sent are queued here.
+ std::queue<Message*> output_queue_;
+
+ // We read from the pipe into this buffer
+ char input_buf_[Channel::kReadBufferSize];
+
+ // Large messages that span multiple pipe buffers, get built-up using
+ // this buffer.
+ std::string input_overflow_buf_;
+
+ // In server-mode, we have to wait for the client to connect before we
+ // can begin reading. We make use of the input_state_ when performing
+ // the connect operation in overlapped mode.
+ bool waiting_connect_;
+
+ // This flag is set when processing incoming messages. It is used to
+ // avoid recursing through ProcessIncomingMessages, which could cause
+ // problems. TODO(darin): make this unnecessary
+ bool processing_incoming_;
+
+ ScopedRunnableMethodFactory<ChannelImpl> factory_;
+
+ scoped_ptr<base::NonThreadSafe> thread_check_;
+
+ DISALLOW_COPY_AND_ASSIGN(ChannelImpl);
+};
+
+} // namespace IPC
+
+#endif // IPC_IPC_CHANNEL_WIN_H_