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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 MOJO_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_ | |
6 #define MOJO_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "base/memory/ref_counted.h" | |
10 #include "mojo/system/dispatcher.h" | |
11 #include "mojo/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 producer handle for data | |
19 // pipes (created by the Mojo primitive |MojoCreateDataPipe()|). This class is | |
20 // thread-safe. | |
21 class MOJO_SYSTEM_IMPL_EXPORT DataPipeProducerDispatcher : public Dispatcher { | |
22 public: | |
23 DataPipeProducerDispatcher(); | |
24 | |
25 // Must be called before any other methods. | |
26 void Init(scoped_refptr<DataPipe> data_pipe); | |
27 | |
28 // |Dispatcher| public methods: | |
29 virtual Type GetType() const override; | |
30 | |
31 private: | |
32 virtual ~DataPipeProducerDispatcher(); | |
33 | |
34 // |Dispatcher| protected methods: | |
35 virtual void CancelAllWaitersNoLock() override; | |
36 virtual void CloseImplNoLock() override; | |
37 virtual scoped_refptr<Dispatcher> | |
38 CreateEquivalentDispatcherAndCloseImplNoLock() override; | |
39 virtual MojoResult WriteDataImplNoLock(UserPointer<const void> elements, | |
40 UserPointer<uint32_t> num_bytes, | |
41 MojoWriteDataFlags flags) override; | |
42 virtual MojoResult BeginWriteDataImplNoLock( | |
43 UserPointer<void*> buffer, | |
44 UserPointer<uint32_t> buffer_num_bytes, | |
45 MojoWriteDataFlags flags) override; | |
46 virtual MojoResult EndWriteDataImplNoLock( | |
47 uint32_t num_bytes_written) override; | |
48 virtual HandleSignalsState GetHandleSignalsStateImplNoLock() const override; | |
49 virtual MojoResult AddWaiterImplNoLock( | |
50 Waiter* waiter, | |
51 MojoHandleSignals signals, | |
52 uint32_t context, | |
53 HandleSignalsState* signals_state) override; | |
54 virtual void RemoveWaiterImplNoLock( | |
55 Waiter* waiter, | |
56 HandleSignalsState* signals_state) override; | |
57 virtual bool IsBusyNoLock() const override; | |
58 | |
59 // Protected by |lock()|: | |
60 scoped_refptr<DataPipe> data_pipe_; // This will be null if closed. | |
61 | |
62 DISALLOW_COPY_AND_ASSIGN(DataPipeProducerDispatcher); | |
63 }; | |
64 | |
65 } // namespace system | |
66 } // namespace mojo | |
67 | |
68 #endif // MOJO_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_ | |
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