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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_DATA_PIPE_CONSUMER_DISPATCHER_H_
#define MOJO_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "mojo/system/dispatcher.h"
#include "mojo/system/system_impl_export.h"
namespace mojo {
namespace system {
class DataPipe;
// This is the |Dispatcher| implementation for the consumer handle for data
// pipes (created by the Mojo primitive |MojoCreateDataPipe()|). This class is
// thread-safe.
class MOJO_SYSTEM_IMPL_EXPORT DataPipeConsumerDispatcher : public Dispatcher {
public:
DataPipeConsumerDispatcher();
// Must be called before any other methods.
void Init(scoped_refptr<DataPipe> data_pipe);
// |Dispatcher| public methods:
virtual Type GetType() const OVERRIDE;
private:
virtual ~DataPipeConsumerDispatcher();
// |Dispatcher| protected methods:
virtual void CancelAllWaitersNoLock() OVERRIDE;
virtual void CloseImplNoLock() OVERRIDE;
virtual scoped_refptr<Dispatcher>
CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE;
virtual MojoResult ReadDataImplNoLock(UserPointer<void> elements,
UserPointer<uint32_t> num_bytes,
MojoReadDataFlags flags) OVERRIDE;
virtual MojoResult BeginReadDataImplNoLock(
UserPointer<const void*> buffer,
UserPointer<uint32_t> buffer_num_bytes,
MojoReadDataFlags flags) OVERRIDE;
virtual MojoResult EndReadDataImplNoLock(uint32_t num_bytes_read) OVERRIDE;
virtual HandleSignalsState GetHandleSignalsStateImplNoLock() const OVERRIDE;
virtual MojoResult AddWaiterImplNoLock(
Waiter* waiter,
MojoHandleSignals signals,
uint32_t context,
HandleSignalsState* signals_state) OVERRIDE;
virtual void RemoveWaiterImplNoLock(
Waiter* waiter,
HandleSignalsState* signals_state) OVERRIDE;
virtual bool IsBusyNoLock() const OVERRIDE;
// Protected by |lock()|:
scoped_refptr<DataPipe> data_pipe_; // This will be null if closed.
DISALLOW_COPY_AND_ASSIGN(DataPipeConsumerDispatcher);
};
} // namespace system
} // namespace mojo
#endif // MOJO_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_
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