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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_ | 5 #ifndef MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_ |
6 #define MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_ | 6 #define MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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82 | 82 |
83 // These are called by the dispatcher to implement its methods of | 83 // These are called by the dispatcher to implement its methods of |
84 // corresponding names. In all cases, the port |port| must be open. | 84 // corresponding names. In all cases, the port |port| must be open. |
85 void CancelAllAwakables(unsigned port); | 85 void CancelAllAwakables(unsigned port); |
86 void Close(unsigned port); | 86 void Close(unsigned port); |
87 // Unlike |MessagePipeDispatcher::WriteMessage()|, this does not validate its | 87 // Unlike |MessagePipeDispatcher::WriteMessage()|, this does not validate its |
88 // arguments. | 88 // arguments. |
89 MojoResult WriteMessage(unsigned port, | 89 MojoResult WriteMessage(unsigned port, |
90 UserPointer<const void> bytes, | 90 UserPointer<const void> bytes, |
91 uint32_t num_bytes, | 91 uint32_t num_bytes, |
92 std::vector<DispatcherTransport>* transports, | 92 std::vector<HandleTransport>* transports, |
93 MojoWriteMessageFlags flags); | 93 MojoWriteMessageFlags flags); |
94 MojoResult ReadMessage(unsigned port, | 94 MojoResult ReadMessage(unsigned port, |
95 UserPointer<void> bytes, | 95 UserPointer<void> bytes, |
96 UserPointer<uint32_t> num_bytes, | 96 UserPointer<uint32_t> num_bytes, |
97 DispatcherVector* dispatchers, | 97 DispatcherVector* dispatchers, |
98 uint32_t* num_dispatchers, | 98 uint32_t* num_dispatchers, |
99 MojoReadMessageFlags flags); | 99 MojoReadMessageFlags flags); |
100 HandleSignalsState GetHandleSignalsState(unsigned port) const; | 100 HandleSignalsState GetHandleSignalsState(unsigned port) const; |
101 MojoResult AddAwakable(unsigned port, | 101 MojoResult AddAwakable(unsigned port, |
102 Awakable* awakable, | 102 Awakable* awakable, |
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129 | 129 |
130 private: | 130 private: |
131 MessagePipe(); | 131 MessagePipe(); |
132 ~MessagePipe() override; | 132 ~MessagePipe() override; |
133 | 133 |
134 // This is used internally by |WriteMessage()| and by |OnReadMessage()|. | 134 // This is used internally by |WriteMessage()| and by |OnReadMessage()|. |
135 // |transports| may be non-null only if it's nonempty and |message| has no | 135 // |transports| may be non-null only if it's nonempty and |message| has no |
136 // dispatchers attached. Must be called with |lock_| held. | 136 // dispatchers attached. Must be called with |lock_| held. |
137 MojoResult EnqueueMessageNoLock(unsigned port, | 137 MojoResult EnqueueMessageNoLock(unsigned port, |
138 std::unique_ptr<MessageInTransit> message, | 138 std::unique_ptr<MessageInTransit> message, |
139 std::vector<DispatcherTransport>* transports) | 139 std::vector<HandleTransport>* transports) |
140 MOJO_EXCLUSIVE_LOCKS_REQUIRED(mutex_); | 140 MOJO_EXCLUSIVE_LOCKS_REQUIRED(mutex_); |
141 | 141 |
142 // Helper for |EnqueueMessageNoLock()|. | 142 // Helper for |EnqueueMessageNoLock()|. |
143 MojoResult AttachTransportsNoLock( | 143 MojoResult AttachTransportsNoLock(unsigned port, |
144 unsigned port, | 144 MessageInTransit* message, |
145 MessageInTransit* message, | 145 std::vector<HandleTransport>* transports) |
146 std::vector<DispatcherTransport>* transports) | |
147 MOJO_EXCLUSIVE_LOCKS_REQUIRED(mutex_); | 146 MOJO_EXCLUSIVE_LOCKS_REQUIRED(mutex_); |
148 | 147 |
149 mutable util::Mutex mutex_; | 148 mutable util::Mutex mutex_; |
150 std::unique_ptr<MessagePipeEndpoint> endpoints_[2] MOJO_GUARDED_BY(mutex_); | 149 std::unique_ptr<MessagePipeEndpoint> endpoints_[2] MOJO_GUARDED_BY(mutex_); |
151 | 150 |
152 MOJO_DISALLOW_COPY_AND_ASSIGN(MessagePipe); | 151 MOJO_DISALLOW_COPY_AND_ASSIGN(MessagePipe); |
153 }; | 152 }; |
154 | 153 |
155 } // namespace system | 154 } // namespace system |
156 } // namespace mojo | 155 } // namespace mojo |
157 | 156 |
158 #endif // MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_ | 157 #endif // MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_ |
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