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| 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 THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_ | |
| 6 #define THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_ | |
| 7 | |
| 8 #include "base/memory/ref_counted.h" | |
| 9 #include "mojo/public/cpp/system/macros.h" | |
| 10 #include "third_party/mojo/src/mojo/edk/system/dispatcher.h" | |
| 11 #include "third_party/mojo/src/mojo/edk/system/system_impl_export.h" | |
| 12 | |
| 13 namespace mojo { | |
| 14 namespace system { | |
| 15 | |
| 16 class DataPipe; | |
| 17 | |
| 18 // This is the |Dispatcher| implementation for the consumer handle for data | |
| 19 // pipes (created by the Mojo primitive |MojoCreateDataPipe()|). This class is | |
| 20 // thread-safe. | |
| 21 class MOJO_SYSTEM_IMPL_EXPORT DataPipeConsumerDispatcher final | |
| 22 : public Dispatcher { | |
| 23 public: | |
| 24 static scoped_refptr<DataPipeConsumerDispatcher> Create() { | |
| 25 return make_scoped_refptr(new DataPipeConsumerDispatcher()); | |
| 26 } | |
| 27 | |
| 28 // Must be called before any other methods. | |
| 29 void Init(scoped_refptr<DataPipe> data_pipe) MOJO_NOT_THREAD_SAFE; | |
| 30 | |
| 31 // |Dispatcher| public methods: | |
| 32 Type GetType() const override; | |
| 33 | |
| 34 // The "opposite" of |SerializeAndClose()|. (Typically this is called by | |
| 35 // |Dispatcher::Deserialize()|.) | |
| 36 static scoped_refptr<DataPipeConsumerDispatcher> | |
| 37 Deserialize(Channel* channel, const void* source, size_t size); | |
| 38 | |
| 39 // Get access to the |DataPipe| for testing. | |
| 40 DataPipe* GetDataPipeForTest(); | |
| 41 | |
| 42 private: | |
| 43 DataPipeConsumerDispatcher(); | |
| 44 ~DataPipeConsumerDispatcher() override; | |
| 45 | |
| 46 // |Dispatcher| protected methods: | |
| 47 void CancelAllAwakablesNoLock() override; | |
| 48 void CloseImplNoLock() override; | |
| 49 scoped_refptr<Dispatcher> CreateEquivalentDispatcherAndCloseImplNoLock() | |
| 50 override; | |
| 51 MojoResult ReadDataImplNoLock(UserPointer<void> elements, | |
| 52 UserPointer<uint32_t> num_bytes, | |
| 53 MojoReadDataFlags flags) override; | |
| 54 MojoResult BeginReadDataImplNoLock(UserPointer<const void*> buffer, | |
| 55 UserPointer<uint32_t> buffer_num_bytes, | |
| 56 MojoReadDataFlags flags) override; | |
| 57 MojoResult EndReadDataImplNoLock(uint32_t num_bytes_read) override; | |
| 58 HandleSignalsState GetHandleSignalsStateImplNoLock() const override; | |
| 59 MojoResult AddAwakableImplNoLock(Awakable* awakable, | |
| 60 MojoHandleSignals signals, | |
| 61 uintptr_t context, | |
| 62 HandleSignalsState* signals_state) override; | |
| 63 void RemoveAwakableImplNoLock(Awakable* awakable, | |
| 64 HandleSignalsState* signals_state) override; | |
| 65 void StartSerializeImplNoLock(Channel* channel, | |
| 66 size_t* max_size, | |
| 67 size_t* max_platform_handles) override | |
| 68 MOJO_NOT_THREAD_SAFE; | |
| 69 bool EndSerializeAndCloseImplNoLock( | |
| 70 Channel* channel, | |
| 71 void* destination, | |
| 72 size_t* actual_size, | |
| 73 embedder::PlatformHandleVector* platform_handles) override | |
| 74 MOJO_NOT_THREAD_SAFE; | |
| 75 bool IsBusyNoLock() const override; | |
| 76 | |
| 77 // This will be null if closed. | |
| 78 scoped_refptr<DataPipe> data_pipe_ MOJO_GUARDED_BY(mutex()); | |
| 79 | |
| 80 MOJO_DISALLOW_COPY_AND_ASSIGN(DataPipeConsumerDispatcher); | |
| 81 }; | |
| 82 | |
| 83 } // namespace system | |
| 84 } // namespace mojo | |
| 85 | |
| 86 #endif // THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_ | |
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