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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_EDK_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_ | |
6 #define MOJO_EDK_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "base/memory/ref_counted.h" | |
10 #include "mojo/edk/system/dispatcher.h" | |
11 #include "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 : public Dispatcher { | |
22 public: | |
23 DataPipeConsumerDispatcher(); | |
24 | |
25 // Must be called before any other methods. | |
26 void Init(scoped_refptr<DataPipe> data_pipe); | |
27 | |
28 // |Dispatcher| public methods: | |
29 Type GetType() const override; | |
30 | |
31 private: | |
32 ~DataPipeConsumerDispatcher() override; | |
33 | |
34 // |Dispatcher| protected methods: | |
35 void CancelAllAwakablesNoLock() override; | |
36 void CloseImplNoLock() override; | |
37 scoped_refptr<Dispatcher> CreateEquivalentDispatcherAndCloseImplNoLock() | |
38 override; | |
39 MojoResult ReadDataImplNoLock(UserPointer<void> elements, | |
40 UserPointer<uint32_t> num_bytes, | |
41 MojoReadDataFlags flags) override; | |
42 MojoResult BeginReadDataImplNoLock(UserPointer<const void*> buffer, | |
43 UserPointer<uint32_t> buffer_num_bytes, | |
44 MojoReadDataFlags flags) override; | |
45 MojoResult EndReadDataImplNoLock(uint32_t num_bytes_read) override; | |
46 HandleSignalsState GetHandleSignalsStateImplNoLock() const override; | |
47 MojoResult AddAwakableImplNoLock(Awakable* awakable, | |
48 MojoHandleSignals signals, | |
49 uint32_t context, | |
50 HandleSignalsState* signals_state) override; | |
51 void RemoveAwakableImplNoLock(Awakable* awakable, | |
52 HandleSignalsState* signals_state) override; | |
53 bool IsBusyNoLock() const override; | |
54 | |
55 // Protected by |lock()|: | |
56 scoped_refptr<DataPipe> data_pipe_; // This will be null if closed. | |
57 | |
58 DISALLOW_COPY_AND_ASSIGN(DataPipeConsumerDispatcher); | |
59 }; | |
60 | |
61 } // namespace system | |
62 } // namespace mojo | |
63 | |
64 #endif // MOJO_EDK_SYSTEM_DATA_PIPE_CONSUMER_DISPATCHER_H_ | |
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