agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 1 | // Copyright (c) 2006-2008 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 | #include "base/message_loop.h" |
erg@chromium.org | a752852 | 2010-07-16 02:23:23 +0900 | [diff] [blame] | 6 | #include "base/ref_counted.h" |
| 7 | #include "base/scoped_ptr.h" |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 8 | #include "base/thread.h" |
| 9 | #include "ipc/ipc_channel_proxy.h" |
| 10 | #include "ipc/ipc_logging.h" |
| 11 | #include "ipc/ipc_message_utils.h" |
| 12 | |
| 13 | namespace IPC { |
| 14 | |
jcampan@chromium.org | 1c86b55 | 2009-07-29 07:09:45 +0900 | [diff] [blame] | 15 | //------------------------------------------------------------------------------ |
| 16 | |
| 17 | // This task ensures the message is deleted if the task is deleted without |
| 18 | // having been run. |
| 19 | class SendTask : public Task { |
| 20 | public: |
| 21 | SendTask(ChannelProxy::Context* context, Message* message) |
| 22 | : context_(context), |
| 23 | message_(message) { |
| 24 | } |
| 25 | |
| 26 | virtual void Run() { |
| 27 | context_->OnSendMessage(message_.release()); |
| 28 | } |
| 29 | |
| 30 | private: |
| 31 | scoped_refptr<ChannelProxy::Context> context_; |
| 32 | scoped_ptr<Message> message_; |
| 33 | |
| 34 | DISALLOW_COPY_AND_ASSIGN(SendTask); |
| 35 | }; |
| 36 | |
| 37 | //------------------------------------------------------------------------------ |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 38 | |
erg@google.com | 20b66e3 | 2010-10-01 05:06:30 +0900 | [diff] [blame] | 39 | ChannelProxy::MessageFilter::MessageFilter() {} |
| 40 | |
erg@google.com | 2ec53b4 | 2010-09-24 07:43:53 +0900 | [diff] [blame] | 41 | ChannelProxy::MessageFilter::~MessageFilter() {} |
| 42 | |
| 43 | void ChannelProxy::MessageFilter::OnFilterAdded(Channel* channel) {} |
| 44 | |
| 45 | void ChannelProxy::MessageFilter::OnFilterRemoved() {} |
| 46 | |
| 47 | void ChannelProxy::MessageFilter::OnChannelConnected(int32 peer_pid) {} |
| 48 | |
| 49 | void ChannelProxy::MessageFilter::OnChannelError() {} |
| 50 | |
| 51 | void ChannelProxy::MessageFilter::OnChannelClosing() {} |
| 52 | |
| 53 | bool ChannelProxy::MessageFilter::OnMessageReceived(const Message& message) { |
| 54 | return false; |
| 55 | } |
| 56 | |
mpcomplete@chromium.org | 78bc975 | 2010-10-23 07:19:24 +0900 | [diff] [blame] | 57 | void ChannelProxy::MessageFilter::OnDestruct() const { |
erg@google.com | 2ec53b4 | 2010-09-24 07:43:53 +0900 | [diff] [blame] | 58 | delete this; |
| 59 | } |
| 60 | |
| 61 | //------------------------------------------------------------------------------ |
| 62 | |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 63 | ChannelProxy::Context::Context(Channel::Listener* listener, |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 64 | MessageLoop* ipc_message_loop) |
| 65 | : listener_message_loop_(MessageLoop::current()), |
| 66 | listener_(listener), |
| 67 | ipc_message_loop_(ipc_message_loop), |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 68 | peer_pid_(0), |
| 69 | channel_connected_called_(false) { |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 70 | } |
| 71 | |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 72 | void ChannelProxy::Context::CreateChannel(const IPC::ChannelHandle& handle, |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 73 | const Channel::Mode& mode) { |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 74 | DCHECK(channel_.get() == NULL); |
| 75 | channel_id_ = handle.name; |
| 76 | channel_.reset(new Channel(handle, mode, this)); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | bool ChannelProxy::Context::TryFilters(const Message& message) { |
| 80 | #ifdef IPC_MESSAGE_LOG_ENABLED |
satish@chromium.org | aa87060 | 2010-12-13 17:18:55 +0900 | [diff] [blame] | 81 | Logging* logger = Logging::GetInstance(); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 82 | if (logger->Enabled()) |
| 83 | logger->OnPreDispatchMessage(message); |
| 84 | #endif |
| 85 | |
| 86 | for (size_t i = 0; i < filters_.size(); ++i) { |
| 87 | if (filters_[i]->OnMessageReceived(message)) { |
| 88 | #ifdef IPC_MESSAGE_LOG_ENABLED |
| 89 | if (logger->Enabled()) |
| 90 | logger->OnPostDispatchMessage(message, channel_id_); |
| 91 | #endif |
| 92 | return true; |
| 93 | } |
| 94 | } |
| 95 | return false; |
| 96 | } |
| 97 | |
| 98 | // Called on the IPC::Channel thread |
jam@chromium.org | 8a2c784 | 2010-12-24 15:19:28 +0900 | [diff] [blame^] | 99 | bool ChannelProxy::Context::OnMessageReceived(const Message& message) { |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 100 | // First give a chance to the filters to process this message. |
| 101 | if (!TryFilters(message)) |
| 102 | OnMessageReceivedNoFilter(message); |
jam@chromium.org | 8a2c784 | 2010-12-24 15:19:28 +0900 | [diff] [blame^] | 103 | return true; |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | // Called on the IPC::Channel thread |
jam@chromium.org | 8a2c784 | 2010-12-24 15:19:28 +0900 | [diff] [blame^] | 107 | bool ChannelProxy::Context::OnMessageReceivedNoFilter(const Message& message) { |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 108 | // NOTE: This code relies on the listener's message loop not going away while |
| 109 | // this thread is active. That should be a reasonable assumption, but it |
| 110 | // feels risky. We may want to invent some more indirect way of referring to |
| 111 | // a MessageLoop if this becomes a problem. |
| 112 | listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod( |
| 113 | this, &Context::OnDispatchMessage, message)); |
jam@chromium.org | 8a2c784 | 2010-12-24 15:19:28 +0900 | [diff] [blame^] | 114 | return true; |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | // Called on the IPC::Channel thread |
| 118 | void ChannelProxy::Context::OnChannelConnected(int32 peer_pid) { |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 119 | // Add any pending filters. This avoids a race condition where someone |
| 120 | // creates a ChannelProxy, calls AddFilter, and then right after starts the |
| 121 | // peer process. The IO thread could receive a message before the task to add |
| 122 | // the filter is run on the IO thread. |
| 123 | OnAddFilter(); |
| 124 | |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 125 | peer_pid_ = peer_pid; |
| 126 | for (size_t i = 0; i < filters_.size(); ++i) |
| 127 | filters_[i]->OnChannelConnected(peer_pid); |
| 128 | |
| 129 | // See above comment about using listener_message_loop_ here. |
| 130 | listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod( |
| 131 | this, &Context::OnDispatchConnected)); |
| 132 | } |
| 133 | |
| 134 | // Called on the IPC::Channel thread |
| 135 | void ChannelProxy::Context::OnChannelError() { |
| 136 | for (size_t i = 0; i < filters_.size(); ++i) |
| 137 | filters_[i]->OnChannelError(); |
| 138 | |
| 139 | // See above comment about using listener_message_loop_ here. |
| 140 | listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod( |
| 141 | this, &Context::OnDispatchError)); |
| 142 | } |
| 143 | |
| 144 | // Called on the IPC::Channel thread |
| 145 | void ChannelProxy::Context::OnChannelOpened() { |
| 146 | DCHECK(channel_ != NULL); |
| 147 | |
| 148 | // Assume a reference to ourselves on behalf of this thread. This reference |
| 149 | // will be released when we are closed. |
| 150 | AddRef(); |
| 151 | |
| 152 | if (!channel_->Connect()) { |
| 153 | OnChannelError(); |
| 154 | return; |
| 155 | } |
| 156 | |
| 157 | for (size_t i = 0; i < filters_.size(); ++i) |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 158 | filters_[i]->OnFilterAdded(channel_.get()); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | // Called on the IPC::Channel thread |
| 162 | void ChannelProxy::Context::OnChannelClosed() { |
| 163 | // It's okay for IPC::ChannelProxy::Close to be called more than once, which |
| 164 | // would result in this branch being taken. |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 165 | if (!channel_.get()) |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 166 | return; |
| 167 | |
| 168 | for (size_t i = 0; i < filters_.size(); ++i) { |
| 169 | filters_[i]->OnChannelClosing(); |
| 170 | filters_[i]->OnFilterRemoved(); |
| 171 | } |
| 172 | |
| 173 | // We don't need the filters anymore. |
| 174 | filters_.clear(); |
| 175 | |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 176 | channel_.reset(); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 177 | |
| 178 | // Balance with the reference taken during startup. This may result in |
| 179 | // self-destruction. |
| 180 | Release(); |
| 181 | } |
| 182 | |
| 183 | // Called on the IPC::Channel thread |
| 184 | void ChannelProxy::Context::OnSendMessage(Message* message) { |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 185 | if (!channel_.get()) { |
ananta@chromium.org | 999f297 | 2010-09-03 06:45:50 +0900 | [diff] [blame] | 186 | delete message; |
| 187 | OnChannelClosed(); |
| 188 | return; |
| 189 | } |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 190 | if (!channel_->Send(message)) |
| 191 | OnChannelError(); |
| 192 | } |
| 193 | |
| 194 | // Called on the IPC::Channel thread |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 195 | void ChannelProxy::Context::OnAddFilter() { |
| 196 | std::vector<scoped_refptr<MessageFilter> > filters; |
| 197 | { |
| 198 | AutoLock auto_lock(pending_filters_lock_); |
| 199 | filters.swap(pending_filters_); |
| 200 | } |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 201 | |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 202 | for (size_t i = 0; i < filters.size(); ++i) { |
| 203 | filters_.push_back(filters[i]); |
| 204 | |
| 205 | // If the channel has already been created, then we need to send this |
| 206 | // message so that the filter gets access to the Channel. |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 207 | if (channel_.get()) |
| 208 | filters[i]->OnFilterAdded(channel_.get()); |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 209 | // Ditto for the peer process id. |
| 210 | if (peer_pid_) |
| 211 | filters[i]->OnChannelConnected(peer_pid_); |
| 212 | } |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | // Called on the IPC::Channel thread |
| 216 | void ChannelProxy::Context::OnRemoveFilter(MessageFilter* filter) { |
| 217 | for (size_t i = 0; i < filters_.size(); ++i) { |
| 218 | if (filters_[i].get() == filter) { |
| 219 | filter->OnFilterRemoved(); |
| 220 | filters_.erase(filters_.begin() + i); |
| 221 | return; |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | NOTREACHED() << "filter to be removed not found"; |
| 226 | } |
| 227 | |
| 228 | // Called on the listener's thread |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 229 | void ChannelProxy::Context::AddFilter(MessageFilter* filter) { |
| 230 | AutoLock auto_lock(pending_filters_lock_); |
| 231 | pending_filters_.push_back(make_scoped_refptr(filter)); |
| 232 | ipc_message_loop_->PostTask( |
| 233 | FROM_HERE, |
| 234 | NewRunnableMethod(this, &Context::OnAddFilter)); |
| 235 | } |
| 236 | |
| 237 | // Called on the listener's thread |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 238 | void ChannelProxy::Context::OnDispatchMessage(const Message& message) { |
| 239 | if (!listener_) |
| 240 | return; |
| 241 | |
| 242 | OnDispatchConnected(); |
| 243 | |
| 244 | #ifdef IPC_MESSAGE_LOG_ENABLED |
satish@chromium.org | aa87060 | 2010-12-13 17:18:55 +0900 | [diff] [blame] | 245 | Logging* logger = Logging::GetInstance(); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 246 | if (message.type() == IPC_LOGGING_ID) { |
| 247 | logger->OnReceivedLoggingMessage(message); |
| 248 | return; |
| 249 | } |
| 250 | |
| 251 | if (logger->Enabled()) |
| 252 | logger->OnPreDispatchMessage(message); |
| 253 | #endif |
| 254 | |
| 255 | listener_->OnMessageReceived(message); |
| 256 | |
| 257 | #ifdef IPC_MESSAGE_LOG_ENABLED |
| 258 | if (logger->Enabled()) |
| 259 | logger->OnPostDispatchMessage(message, channel_id_); |
| 260 | #endif |
| 261 | } |
| 262 | |
| 263 | // Called on the listener's thread |
| 264 | void ChannelProxy::Context::OnDispatchConnected() { |
| 265 | if (channel_connected_called_) |
| 266 | return; |
| 267 | |
| 268 | channel_connected_called_ = true; |
| 269 | if (listener_) |
| 270 | listener_->OnChannelConnected(peer_pid_); |
| 271 | } |
| 272 | |
| 273 | // Called on the listener's thread |
| 274 | void ChannelProxy::Context::OnDispatchError() { |
| 275 | if (listener_) |
| 276 | listener_->OnChannelError(); |
| 277 | } |
| 278 | |
| 279 | //----------------------------------------------------------------------------- |
| 280 | |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 281 | ChannelProxy::ChannelProxy(const IPC::ChannelHandle& channel_handle, |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 282 | Channel::Mode mode, |
| 283 | Channel::Listener* listener, |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 284 | MessageLoop* ipc_thread) |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 285 | : context_(new Context(listener, ipc_thread)) { |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 286 | Init(channel_handle, mode, ipc_thread, true); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 287 | } |
| 288 | |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 289 | ChannelProxy::ChannelProxy(const IPC::ChannelHandle& channel_handle, |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 290 | Channel::Mode mode, |
| 291 | MessageLoop* ipc_thread, |
| 292 | Context* context, |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 293 | bool create_pipe_now) |
| 294 | : context_(context) { |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 295 | Init(channel_handle, mode, ipc_thread, create_pipe_now); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 296 | } |
| 297 | |
erg@google.com | 2ec53b4 | 2010-09-24 07:43:53 +0900 | [diff] [blame] | 298 | ChannelProxy::~ChannelProxy() { |
| 299 | Close(); |
| 300 | } |
| 301 | |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 302 | void ChannelProxy::Init(const IPC::ChannelHandle& channel_handle, |
| 303 | Channel::Mode mode, MessageLoop* ipc_thread_loop, |
| 304 | bool create_pipe_now) { |
| 305 | #if defined(OS_POSIX) |
| 306 | // When we are creating a server on POSIX, we need its file descriptor |
| 307 | // to be created immediately so that it can be accessed and passed |
| 308 | // to other processes. Forcing it to be created immediately avoids |
| 309 | // race conditions that may otherwise arise. |
| 310 | if (mode == Channel::MODE_SERVER) { |
| 311 | create_pipe_now = true; |
| 312 | } |
| 313 | #endif // defined(OS_POSIX) |
| 314 | |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 315 | if (create_pipe_now) { |
| 316 | // Create the channel immediately. This effectively sets up the |
| 317 | // low-level pipe so that the client can connect. Without creating |
| 318 | // the pipe immediately, it is possible for a listener to attempt |
| 319 | // to connect and get an error since the pipe doesn't exist yet. |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 320 | context_->CreateChannel(channel_handle, mode); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 321 | } else { |
| 322 | context_->ipc_message_loop()->PostTask(FROM_HERE, NewRunnableMethod( |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 323 | context_.get(), &Context::CreateChannel, channel_handle, mode)); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | // complete initialization on the background thread |
| 327 | context_->ipc_message_loop()->PostTask(FROM_HERE, NewRunnableMethod( |
| 328 | context_.get(), &Context::OnChannelOpened)); |
| 329 | } |
| 330 | |
| 331 | void ChannelProxy::Close() { |
| 332 | // Clear the backpointer to the listener so that any pending calls to |
| 333 | // Context::OnDispatchMessage or OnDispatchError will be ignored. It is |
| 334 | // possible that the channel could be closed while it is receiving messages! |
| 335 | context_->Clear(); |
| 336 | |
| 337 | if (context_->ipc_message_loop()) { |
| 338 | context_->ipc_message_loop()->PostTask(FROM_HERE, NewRunnableMethod( |
| 339 | context_.get(), &Context::OnChannelClosed)); |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | bool ChannelProxy::Send(Message* message) { |
| 344 | #ifdef IPC_MESSAGE_LOG_ENABLED |
satish@chromium.org | aa87060 | 2010-12-13 17:18:55 +0900 | [diff] [blame] | 345 | Logging::GetInstance()->OnSendMessage(message, context_->channel_id()); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 346 | #endif |
| 347 | |
jcampan@chromium.org | 1c86b55 | 2009-07-29 07:09:45 +0900 | [diff] [blame] | 348 | context_->ipc_message_loop()->PostTask(FROM_HERE, |
| 349 | new SendTask(context_.get(), message)); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 350 | return true; |
| 351 | } |
| 352 | |
| 353 | void ChannelProxy::AddFilter(MessageFilter* filter) { |
jam@chromium.org | e57135c | 2010-12-03 04:16:07 +0900 | [diff] [blame] | 354 | context_->AddFilter(filter); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | void ChannelProxy::RemoveFilter(MessageFilter* filter) { |
willchan@chromium.org | 3298847 | 2010-10-20 08:48:38 +0900 | [diff] [blame] | 358 | context_->ipc_message_loop()->PostTask( |
| 359 | FROM_HERE, NewRunnableMethod( |
| 360 | context_.get(), |
| 361 | &Context::OnRemoveFilter, |
| 362 | make_scoped_refptr(filter))); |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 363 | } |
| 364 | |
nsylvain@chromium.org | c12dde3 | 2009-07-24 03:17:55 +0900 | [diff] [blame] | 365 | void ChannelProxy::ClearIPCMessageLoop() { |
| 366 | context()->ClearIPCMessageLoop(); |
| 367 | } |
| 368 | |
abarth@chromium.org | 07af1a6 | 2010-11-13 03:01:34 +0900 | [diff] [blame] | 369 | #if defined(OS_POSIX) && !defined(OS_NACL) |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 370 | // See the TODO regarding lazy initialization of the channel in |
| 371 | // ChannelProxy::Init(). |
| 372 | // We assume that IPC::Channel::GetClientFileDescriptorMapping() is thread-safe. |
| 373 | int ChannelProxy::GetClientFileDescriptor() const { |
dmaclach@chromium.org | 058c4a7 | 2010-12-09 04:28:09 +0900 | [diff] [blame] | 374 | Channel *channel = context_.get()->channel_.get(); |
| 375 | // Channel must have been created first. |
| 376 | DCHECK(channel) << context_.get()->channel_id_; |
agl@chromium.org | 1c6dcf2 | 2009-07-23 08:57:21 +0900 | [diff] [blame] | 377 | return channel->GetClientFileDescriptor(); |
| 378 | } |
| 379 | #endif |
| 380 | |
| 381 | //----------------------------------------------------------------------------- |
| 382 | |
| 383 | } // namespace IPC |