1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MOJO_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_ 6 #define MOJO_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "base/memory/ref_counted.h" 11 #include "mojo/system/dispatcher.h" 12 #include "mojo/system/system_impl_export.h" 13 14 namespace mojo { 15 namespace system { 16 17 class DataPipe; 18 19 // This is the |Dispatcher| implementation for the producer handle for data 20 // pipes (created by the Mojo primitive |MojoCreateDataPipe()|). This class is 21 // thread-safe. 22 class MOJO_SYSTEM_IMPL_EXPORT DataPipeProducerDispatcher : public Dispatcher { 23 public: 24 DataPipeProducerDispatcher(); 25 26 // Must be called before any other methods. 27 void Init(scoped_refptr<DataPipe> data_pipe); 28 29 private: 30 friend class base::RefCountedThreadSafe<DataPipeProducerDispatcher>; 31 virtual ~DataPipeProducerDispatcher(); 32 33 // |Dispatcher| implementation/overrides: 34 virtual void CancelAllWaitersNoLock() OVERRIDE; 35 virtual MojoResult CloseImplNoLock() OVERRIDE; 36 virtual MojoResult WriteDataImplNoLock(const void* elements, 37 uint32_t* num_elements, 38 MojoWriteDataFlags flags) OVERRIDE; 39 virtual MojoResult BeginWriteDataImplNoLock( 40 void** buffer, 41 uint32_t* buffer_num_elements, 42 MojoWriteDataFlags flags) OVERRIDE; 43 virtual MojoResult EndWriteDataImplNoLock( 44 uint32_t num_elements_written) OVERRIDE; 45 virtual MojoResult AddWaiterImplNoLock(Waiter* waiter, 46 MojoWaitFlags flags, 47 MojoResult wake_result) OVERRIDE; 48 virtual void RemoveWaiterImplNoLock(Waiter* waiter) OVERRIDE; 49 virtual scoped_refptr<Dispatcher> 50 CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE; 51 52 // Protected by |lock()|: 53 scoped_refptr<DataPipe> data_pipe_; // This will be null if closed. 54 55 DISALLOW_COPY_AND_ASSIGN(DataPipeProducerDispatcher); 56 }; 57 58 } // namespace system 59 } // namespace mojo 60 61 #endif // MOJO_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_ 62
