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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 #include "mojo/edk/system/message_pipe.h" | 5 #include "mojo/edk/system/message_pipe.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "mojo/edk/system/channel_endpoint.h" | 8 #include "mojo/edk/system/channel_endpoint.h" |
9 #include "mojo/edk/system/local_message_pipe_endpoint.h" | 9 #include "mojo/edk/system/local_message_pipe_endpoint.h" |
10 #include "mojo/edk/system/message_in_transit.h" | 10 #include "mojo/edk/system/message_in_transit.h" |
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93 unsigned port, | 93 unsigned port, |
94 UserPointer<const void> bytes, | 94 UserPointer<const void> bytes, |
95 uint32_t num_bytes, | 95 uint32_t num_bytes, |
96 std::vector<DispatcherTransport>* transports, | 96 std::vector<DispatcherTransport>* transports, |
97 MojoWriteMessageFlags flags) { | 97 MojoWriteMessageFlags flags) { |
98 DCHECK(port == 0 || port == 1); | 98 DCHECK(port == 0 || port == 1); |
99 return EnqueueMessageInternal( | 99 return EnqueueMessageInternal( |
100 GetPeerPort(port), | 100 GetPeerPort(port), |
101 make_scoped_ptr(new MessageInTransit( | 101 make_scoped_ptr(new MessageInTransit( |
102 MessageInTransit::kTypeMessagePipeEndpoint, | 102 MessageInTransit::kTypeMessagePipeEndpoint, |
103 MessageInTransit::kSubtypeMessagePipeEndpointData, | 103 MessageInTransit::kSubtypeMessagePipeEndpointData, num_bytes, bytes)), |
104 num_bytes, | |
105 bytes)), | |
106 transports); | 104 transports); |
107 } | 105 } |
108 | 106 |
109 MojoResult MessagePipe::ReadMessage(unsigned port, | 107 MojoResult MessagePipe::ReadMessage(unsigned port, |
110 UserPointer<void> bytes, | 108 UserPointer<void> bytes, |
111 UserPointer<uint32_t> num_bytes, | 109 UserPointer<uint32_t> num_bytes, |
112 DispatcherVector* dispatchers, | 110 DispatcherVector* dispatchers, |
113 uint32_t* num_dispatchers, | 111 uint32_t* num_dispatchers, |
114 MojoReadMessageFlags flags) { | 112 MojoReadMessageFlags flags) { |
115 DCHECK(port == 0 || port == 1); | 113 DCHECK(port == 0 || port == 1); |
116 | 114 |
117 base::AutoLock locker(lock_); | 115 base::AutoLock locker(lock_); |
118 DCHECK(endpoints_[port]); | 116 DCHECK(endpoints_[port]); |
119 | 117 |
120 return endpoints_[port]->ReadMessage( | 118 return endpoints_[port]->ReadMessage(bytes, num_bytes, dispatchers, |
121 bytes, num_bytes, dispatchers, num_dispatchers, flags); | 119 num_dispatchers, flags); |
122 } | 120 } |
123 | 121 |
124 HandleSignalsState MessagePipe::GetHandleSignalsState(unsigned port) const { | 122 HandleSignalsState MessagePipe::GetHandleSignalsState(unsigned port) const { |
125 DCHECK(port == 0 || port == 1); | 123 DCHECK(port == 0 || port == 1); |
126 | 124 |
127 base::AutoLock locker(const_cast<base::Lock&>(lock_)); | 125 base::AutoLock locker(const_cast<base::Lock&>(lock_)); |
128 DCHECK(endpoints_[port]); | 126 DCHECK(endpoints_[port]); |
129 | 127 |
130 return endpoints_[port]->GetHandleSignalsState(); | 128 return endpoints_[port]->GetHandleSignalsState(); |
131 } | 129 } |
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158 DCHECK(port == 0 || port == 1); | 156 DCHECK(port == 0 || port == 1); |
159 | 157 |
160 base::AutoLock locker(lock_); | 158 base::AutoLock locker(lock_); |
161 DCHECK(endpoints_[port]); | 159 DCHECK(endpoints_[port]); |
162 DCHECK_EQ(endpoints_[port]->GetType(), MessagePipeEndpoint::kTypeLocal); | 160 DCHECK_EQ(endpoints_[port]->GetType(), MessagePipeEndpoint::kTypeLocal); |
163 | 161 |
164 // The local peer is already closed, so just make a |ChannelEndpoint| that'll | 162 // The local peer is already closed, so just make a |ChannelEndpoint| that'll |
165 // send the already-queued messages. | 163 // send the already-queued messages. |
166 if (!endpoints_[GetPeerPort(port)]) { | 164 if (!endpoints_[GetPeerPort(port)]) { |
167 scoped_refptr<ChannelEndpoint> channel_endpoint(new ChannelEndpoint( | 165 scoped_refptr<ChannelEndpoint> channel_endpoint(new ChannelEndpoint( |
168 nullptr, | 166 nullptr, 0, static_cast<LocalMessagePipeEndpoint*>( |
169 0, | 167 endpoints_[port].get())->message_queue())); |
170 static_cast<LocalMessagePipeEndpoint*>(endpoints_[port].get()) | |
171 ->message_queue())); | |
172 endpoints_[port]->Close(); | 168 endpoints_[port]->Close(); |
173 endpoints_[port].reset(); | 169 endpoints_[port].reset(); |
174 return channel_endpoint; | 170 return channel_endpoint; |
175 } | 171 } |
176 | 172 |
177 // TODO(vtl): Allowing this case is a temporary hack. It'll set up a | 173 // TODO(vtl): Allowing this case is a temporary hack. It'll set up a |
178 // |MessagePipe| with two proxy endpoints, which will then act as a proxy | 174 // |MessagePipe| with two proxy endpoints, which will then act as a proxy |
179 // (rather than trying to connect the two ends directly). | 175 // (rather than trying to connect the two ends directly). |
180 DLOG_IF(WARNING, | 176 DLOG_IF(WARNING, endpoints_[GetPeerPort(port)]->GetType() != |
181 endpoints_[GetPeerPort(port)]->GetType() != | 177 MessagePipeEndpoint::kTypeLocal) |
182 MessagePipeEndpoint::kTypeLocal) | |
183 << "Direct message pipe passing across multiple channels not yet " | 178 << "Direct message pipe passing across multiple channels not yet " |
184 "implemented; will proxy"; | 179 "implemented; will proxy"; |
185 | 180 |
186 scoped_ptr<MessagePipeEndpoint> old_endpoint(endpoints_[port].Pass()); | 181 scoped_ptr<MessagePipeEndpoint> old_endpoint(endpoints_[port].Pass()); |
187 scoped_refptr<ChannelEndpoint> channel_endpoint(new ChannelEndpoint( | 182 scoped_refptr<ChannelEndpoint> channel_endpoint(new ChannelEndpoint( |
188 this, | 183 this, port, static_cast<LocalMessagePipeEndpoint*>(old_endpoint.get()) |
189 port, | 184 ->message_queue())); |
190 static_cast<LocalMessagePipeEndpoint*>(old_endpoint.get()) | |
191 ->message_queue())); | |
192 endpoints_[port].reset(new ProxyMessagePipeEndpoint(channel_endpoint.get())); | 185 endpoints_[port].reset(new ProxyMessagePipeEndpoint(channel_endpoint.get())); |
193 old_endpoint->Close(); | 186 old_endpoint->Close(); |
194 | 187 |
195 return channel_endpoint; | 188 return channel_endpoint; |
196 } | 189 } |
197 | 190 |
198 MojoResult MessagePipe::EnqueueMessage(unsigned port, | 191 MojoResult MessagePipe::EnqueueMessage(unsigned port, |
199 scoped_ptr<MessageInTransit> message) { | 192 scoped_ptr<MessageInTransit> message) { |
200 return EnqueueMessageInternal(port, message.Pass(), nullptr); | 193 return EnqueueMessageInternal(port, message.Pass(), nullptr); |
201 } | 194 } |
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290 MojoResult MessagePipe::HandleControlMessage( | 283 MojoResult MessagePipe::HandleControlMessage( |
291 unsigned /*port*/, | 284 unsigned /*port*/, |
292 scoped_ptr<MessageInTransit> message) { | 285 scoped_ptr<MessageInTransit> message) { |
293 LOG(WARNING) << "Unrecognized MessagePipe control message subtype " | 286 LOG(WARNING) << "Unrecognized MessagePipe control message subtype " |
294 << message->subtype(); | 287 << message->subtype(); |
295 return MOJO_RESULT_UNKNOWN; | 288 return MOJO_RESULT_UNKNOWN; |
296 } | 289 } |
297 | 290 |
298 } // namespace system | 291 } // namespace system |
299 } // namespace mojo | 292 } // namespace mojo |
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