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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 MOJO_SYSTEM_MESSAGE_PIPE_DISPATCHER_H_
#define MOJO_SYSTEM_MESSAGE_PIPE_DISPATCHER_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "mojo/public/system/system_export.h"
#include "mojo/system/dispatcher.h"
namespace mojo {
namespace system {
class MessagePipe;
// This is the |Dispatcher| implementation for message pipes (created by the
// Mojo primitive |MojoCreateMessagePipe()|). This class is thread-safe.
class MOJO_SYSTEM_EXPORT MessagePipeDispatcher : public Dispatcher {
public:
MessagePipeDispatcher();
// Must be called before any other methods. (This method is not thread-safe.)
void Init(scoped_refptr<MessagePipe> message_pipe, unsigned port);
private:
friend class base::RefCountedThreadSafe<MessagePipeDispatcher>;
virtual ~MessagePipeDispatcher();
// |Dispatcher| implementation/overrides:
virtual void CancelAllWaitersNoLock() OVERRIDE;
virtual MojoResult CloseImplNoLock() OVERRIDE;
virtual MojoResult WriteMessageImplNoLock(
const void* bytes, uint32_t num_bytes,
const std::vector<Dispatcher*>* dispatchers,
MojoWriteMessageFlags flags) OVERRIDE;
virtual MojoResult ReadMessageImplNoLock(
void* bytes, uint32_t* num_bytes,
std::vector<scoped_refptr<Dispatcher> >* dispatchers,
uint32_t* num_dispatchers,
MojoReadMessageFlags flags) OVERRIDE;
virtual MojoResult AddWaiterImplNoLock(Waiter* waiter,
MojoWaitFlags flags,
MojoResult wake_result) OVERRIDE;
virtual void RemoveWaiterImplNoLock(Waiter* waiter) OVERRIDE;
virtual scoped_refptr<Dispatcher>
CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE;
// Protected by |lock()|:
scoped_refptr<MessagePipe> message_pipe_; // This will be null if closed.
unsigned port_;
DISALLOW_COPY_AND_ASSIGN(MessagePipeDispatcher);
};
} // namespace system
} // namespace mojo
#endif // MOJO_SYSTEM_MESSAGE_PIPE_DISPATCHER_H_