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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/system/message_pipe.h" | 5 #include "mojo/system/message_pipe.h" |
| 6 | 6 |
| 7 #include "base/logging.h" | 7 #include "base/logging.h" |
| 8 #include "mojo/system/channel_endpoint.h" | 8 #include "mojo/system/channel_endpoint.h" |
| 9 #include "mojo/system/local_message_pipe_endpoint.h" | 9 #include "mojo/system/local_message_pipe_endpoint.h" |
| 10 #include "mojo/system/message_in_transit.h" | 10 #include "mojo/system/message_in_transit.h" |
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| 151 endpoints_[port]->RemoveWaiter(waiter, signals_state); | 151 endpoints_[port]->RemoveWaiter(waiter, signals_state); |
| 152 } | 152 } |
| 153 | 153 |
| 154 scoped_refptr<ChannelEndpoint> MessagePipe::ConvertLocalToProxy(unsigned port) { | 154 scoped_refptr<ChannelEndpoint> MessagePipe::ConvertLocalToProxy(unsigned port) { |
| 155 DCHECK(port == 0 || port == 1); | 155 DCHECK(port == 0 || port == 1); |
| 156 | 156 |
| 157 base::AutoLock locker(lock_); | 157 base::AutoLock locker(lock_); |
| 158 DCHECK(endpoints_[port]); | 158 DCHECK(endpoints_[port]); |
| 159 DCHECK_EQ(endpoints_[port]->GetType(), MessagePipeEndpoint::kTypeLocal); | 159 DCHECK_EQ(endpoints_[port]->GetType(), MessagePipeEndpoint::kTypeLocal); |
| 160 | 160 |
| 161 bool is_peer_open = !!endpoints_[GetPeerPort(port)]; | |
| 162 | |
| 163 // TODO(vtl): Allowing this case is a temporary hack. It'll set up a | 161 // TODO(vtl): Allowing this case is a temporary hack. It'll set up a |
| 164 // |MessagePipe| with two proxy endpoints, which will then act as a proxy | 162 // |MessagePipe| with two proxy endpoints, which will then act as a proxy |
| 165 // (rather than trying to connect the two ends directly). | 163 // (rather than trying to connect the two ends directly). |
| 166 DLOG_IF(WARNING, | 164 DLOG_IF(WARNING, |
| 167 is_peer_open && | 165 !!endpoints_[GetPeerPort(port)] && |
| 168 endpoints_[GetPeerPort(port)]->GetType() != | 166 endpoints_[GetPeerPort(port)]->GetType() != |
| 169 MessagePipeEndpoint::kTypeLocal) | 167 MessagePipeEndpoint::kTypeLocal) |
| 170 << "Direct message pipe passing across multiple channels not yet " | 168 << "Direct message pipe passing across multiple channels not yet " |
| 171 "implemented; will proxy"; | 169 "implemented; will proxy"; |
| 172 | 170 |
| 173 scoped_ptr<MessagePipeEndpoint> old_endpoint(endpoints_[port].Pass()); | 171 scoped_ptr<MessagePipeEndpoint> old_endpoint(endpoints_[port].Pass()); |
| 174 scoped_refptr<ChannelEndpoint> channel_endpoint( | 172 scoped_refptr<ChannelEndpoint> channel_endpoint( |
| 175 new ChannelEndpoint(this, port)); | 173 new ChannelEndpoint(this, port)); |
| 176 endpoints_[port].reset( | 174 endpoints_[port].reset(new ProxyMessagePipeEndpoint(channel_endpoint.get())); |
| 177 new ProxyMessagePipeEndpoint(channel_endpoint.get(), is_peer_open)); | |
| 178 channel_endpoint->TakeMessages(static_cast<LocalMessagePipeEndpoint*>( | 175 channel_endpoint->TakeMessages(static_cast<LocalMessagePipeEndpoint*>( |
| 179 old_endpoint.get())->message_queue()); | 176 old_endpoint.get())->message_queue()); |
| 180 old_endpoint->Close(); | 177 old_endpoint->Close(); |
| 181 | 178 |
| 182 return channel_endpoint; | 179 return channel_endpoint; |
| 183 } | 180 } |
| 184 | 181 |
| 185 MojoResult MessagePipe::EnqueueMessage(unsigned port, | 182 MojoResult MessagePipe::EnqueueMessage(unsigned port, |
| 186 scoped_ptr<MessageInTransit> message) { | 183 scoped_ptr<MessageInTransit> message) { |
| 187 return EnqueueMessageInternal(port, message.Pass(), nullptr); | 184 return EnqueueMessageInternal(port, message.Pass(), nullptr); |
| 188 } | 185 } |
| 189 | 186 |
| 190 void MessagePipe::Run(unsigned port) { | |
| 191 DCHECK(port == 0 || port == 1); | |
| 192 | |
| 193 base::AutoLock locker(lock_); | |
| 194 DCHECK(endpoints_[port]); | |
| 195 if (!endpoints_[port]->Run()) | |
| 196 endpoints_[port].reset(); | |
| 197 } | |
| 198 | |
| 199 void MessagePipe::OnRemove(unsigned port) { | 187 void MessagePipe::OnRemove(unsigned port) { |
| 200 unsigned destination_port = GetPeerPort(port); | 188 unsigned destination_port = GetPeerPort(port); |
| 201 | 189 |
| 202 base::AutoLock locker(lock_); | 190 base::AutoLock locker(lock_); |
| 203 // A |OnPeerClose()| can come in first, before |OnRemove()| gets called. | 191 // A |OnPeerClose()| can come in first, before |OnRemove()| gets called. |
| 204 if (!endpoints_[port]) | 192 if (!endpoints_[port]) |
| 205 return; | 193 return; |
| 206 | 194 |
| 207 endpoints_[port]->OnRemove(); | 195 endpoints_[port]->OnRemove(); |
| 208 if (endpoints_[destination_port]) { | 196 if (endpoints_[destination_port]) { |
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| 302 MojoResult MessagePipe::HandleControlMessage( | 290 MojoResult MessagePipe::HandleControlMessage( |
| 303 unsigned /*port*/, | 291 unsigned /*port*/, |
| 304 scoped_ptr<MessageInTransit> message) { | 292 scoped_ptr<MessageInTransit> message) { |
| 305 LOG(WARNING) << "Unrecognized MessagePipe control message subtype " | 293 LOG(WARNING) << "Unrecognized MessagePipe control message subtype " |
| 306 << message->subtype(); | 294 << message->subtype(); |
| 307 return MOJO_RESULT_UNKNOWN; | 295 return MOJO_RESULT_UNKNOWN; |
| 308 } | 296 } |
| 309 | 297 |
| 310 } // namespace system | 298 } // namespace system |
| 311 } // namespace mojo | 299 } // namespace mojo |
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