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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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