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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 "base/bind.h" |
5 #include "base/location.h" | 6 #include "base/location.h" |
6 #include "base/memory/ref_counted.h" | 7 #include "base/memory/ref_counted.h" |
7 #include "base/memory/scoped_ptr.h" | 8 #include "base/memory/scoped_ptr.h" |
8 #include "ipc/ipc_channel_proxy.h" | 9 #include "ipc/ipc_channel_proxy.h" |
9 #include "ipc/ipc_logging.h" | 10 #include "ipc/ipc_logging.h" |
10 #include "ipc/ipc_message_utils.h" | 11 #include "ipc/ipc_message_utils.h" |
11 | 12 |
12 namespace IPC { | 13 namespace IPC { |
13 | 14 |
14 //------------------------------------------------------------------------------ | 15 //------------------------------------------------------------------------------ |
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104 OnMessageReceivedNoFilter(message); | 105 OnMessageReceivedNoFilter(message); |
105 return true; | 106 return true; |
106 } | 107 } |
107 | 108 |
108 // Called on the IPC::Channel thread | 109 // Called on the IPC::Channel thread |
109 bool ChannelProxy::Context::OnMessageReceivedNoFilter(const Message& message) { | 110 bool ChannelProxy::Context::OnMessageReceivedNoFilter(const Message& message) { |
110 // NOTE: This code relies on the listener's message loop not going away while | 111 // NOTE: This code relies on the listener's message loop not going away while |
111 // this thread is active. That should be a reasonable assumption, but it | 112 // this thread is active. That should be a reasonable assumption, but it |
112 // feels risky. We may want to invent some more indirect way of referring to | 113 // feels risky. We may want to invent some more indirect way of referring to |
113 // a MessageLoop if this becomes a problem. | 114 // a MessageLoop if this becomes a problem. |
114 listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod( | 115 listener_message_loop_->PostTask( |
115 this, &Context::OnDispatchMessage, message)); | 116 FROM_HERE, base::Bind(&Context::OnDispatchMessage, this, message)); |
116 return true; | 117 return true; |
117 } | 118 } |
118 | 119 |
119 // Called on the IPC::Channel thread | 120 // Called on the IPC::Channel thread |
120 void ChannelProxy::Context::OnChannelConnected(int32 peer_pid) { | 121 void ChannelProxy::Context::OnChannelConnected(int32 peer_pid) { |
121 // Add any pending filters. This avoids a race condition where someone | 122 // Add any pending filters. This avoids a race condition where someone |
122 // creates a ChannelProxy, calls AddFilter, and then right after starts the | 123 // creates a ChannelProxy, calls AddFilter, and then right after starts the |
123 // peer process. The IO thread could receive a message before the task to add | 124 // peer process. The IO thread could receive a message before the task to add |
124 // the filter is run on the IO thread. | 125 // the filter is run on the IO thread. |
125 OnAddFilter(); | 126 OnAddFilter(); |
126 | 127 |
127 peer_pid_ = peer_pid; | 128 peer_pid_ = peer_pid; |
128 for (size_t i = 0; i < filters_.size(); ++i) | 129 for (size_t i = 0; i < filters_.size(); ++i) |
129 filters_[i]->OnChannelConnected(peer_pid); | 130 filters_[i]->OnChannelConnected(peer_pid); |
130 | 131 |
131 // See above comment about using listener_message_loop_ here. | 132 // See above comment about using listener_message_loop_ here. |
132 listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod( | 133 listener_message_loop_->PostTask( |
133 this, &Context::OnDispatchConnected)); | 134 FROM_HERE, base::Bind(&Context::OnDispatchConnected, this)); |
134 } | 135 } |
135 | 136 |
136 // Called on the IPC::Channel thread | 137 // Called on the IPC::Channel thread |
137 void ChannelProxy::Context::OnChannelError() { | 138 void ChannelProxy::Context::OnChannelError() { |
138 for (size_t i = 0; i < filters_.size(); ++i) | 139 for (size_t i = 0; i < filters_.size(); ++i) |
139 filters_[i]->OnChannelError(); | 140 filters_[i]->OnChannelError(); |
140 | 141 |
141 // See above comment about using listener_message_loop_ here. | 142 // See above comment about using listener_message_loop_ here. |
142 listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod( | 143 listener_message_loop_->PostTask( |
143 this, &Context::OnDispatchError)); | 144 FROM_HERE, base::Bind(&Context::OnDispatchError, this)); |
144 } | 145 } |
145 | 146 |
146 // Called on the IPC::Channel thread | 147 // Called on the IPC::Channel thread |
147 void ChannelProxy::Context::OnChannelOpened() { | 148 void ChannelProxy::Context::OnChannelOpened() { |
148 DCHECK(channel_ != NULL); | 149 DCHECK(channel_ != NULL); |
149 | 150 |
150 // Assume a reference to ourselves on behalf of this thread. This reference | 151 // Assume a reference to ourselves on behalf of this thread. This reference |
151 // will be released when we are closed. | 152 // will be released when we are closed. |
152 AddRef(); | 153 AddRef(); |
153 | 154 |
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225 } | 226 } |
226 | 227 |
227 NOTREACHED() << "filter to be removed not found"; | 228 NOTREACHED() << "filter to be removed not found"; |
228 } | 229 } |
229 | 230 |
230 // Called on the listener's thread | 231 // Called on the listener's thread |
231 void ChannelProxy::Context::AddFilter(MessageFilter* filter) { | 232 void ChannelProxy::Context::AddFilter(MessageFilter* filter) { |
232 base::AutoLock auto_lock(pending_filters_lock_); | 233 base::AutoLock auto_lock(pending_filters_lock_); |
233 pending_filters_.push_back(make_scoped_refptr(filter)); | 234 pending_filters_.push_back(make_scoped_refptr(filter)); |
234 ipc_message_loop_->PostTask( | 235 ipc_message_loop_->PostTask( |
235 FROM_HERE, | 236 FROM_HERE, base::Bind(&Context::OnAddFilter, this)); |
236 NewRunnableMethod(this, &Context::OnAddFilter)); | |
237 } | 237 } |
238 | 238 |
239 // Called on the listener's thread | 239 // Called on the listener's thread |
240 void ChannelProxy::Context::OnDispatchMessage(const Message& message) { | 240 void ChannelProxy::Context::OnDispatchMessage(const Message& message) { |
241 if (!listener_) | 241 if (!listener_) |
242 return; | 242 return; |
243 | 243 |
244 OnDispatchConnected(); | 244 OnDispatchConnected(); |
245 | 245 |
246 #ifdef IPC_MESSAGE_LOG_ENABLED | 246 #ifdef IPC_MESSAGE_LOG_ENABLED |
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317 } | 317 } |
318 #endif // defined(OS_POSIX) | 318 #endif // defined(OS_POSIX) |
319 | 319 |
320 if (create_pipe_now) { | 320 if (create_pipe_now) { |
321 // Create the channel immediately. This effectively sets up the | 321 // Create the channel immediately. This effectively sets up the |
322 // low-level pipe so that the client can connect. Without creating | 322 // low-level pipe so that the client can connect. Without creating |
323 // the pipe immediately, it is possible for a listener to attempt | 323 // the pipe immediately, it is possible for a listener to attempt |
324 // to connect and get an error since the pipe doesn't exist yet. | 324 // to connect and get an error since the pipe doesn't exist yet. |
325 context_->CreateChannel(channel_handle, mode); | 325 context_->CreateChannel(channel_handle, mode); |
326 } else { | 326 } else { |
327 context_->ipc_message_loop()->PostTask(FROM_HERE, NewRunnableMethod( | 327 context_->ipc_message_loop()->PostTask( |
328 context_.get(), &Context::CreateChannel, channel_handle, mode)); | 328 FROM_HERE, base::Bind(&Context::CreateChannel, context_.get(), |
| 329 channel_handle, mode)); |
329 } | 330 } |
330 | 331 |
331 // complete initialization on the background thread | 332 // complete initialization on the background thread |
332 context_->ipc_message_loop()->PostTask(FROM_HERE, NewRunnableMethod( | 333 context_->ipc_message_loop()->PostTask( |
333 context_.get(), &Context::OnChannelOpened)); | 334 FROM_HERE, base::Bind(&Context::OnChannelOpened, context_.get())); |
334 } | 335 } |
335 | 336 |
336 void ChannelProxy::Close() { | 337 void ChannelProxy::Close() { |
337 // Clear the backpointer to the listener so that any pending calls to | 338 // Clear the backpointer to the listener so that any pending calls to |
338 // Context::OnDispatchMessage or OnDispatchError will be ignored. It is | 339 // Context::OnDispatchMessage or OnDispatchError will be ignored. It is |
339 // possible that the channel could be closed while it is receiving messages! | 340 // possible that the channel could be closed while it is receiving messages! |
340 context_->Clear(); | 341 context_->Clear(); |
341 | 342 |
342 if (context_->ipc_message_loop()) { | 343 if (context_->ipc_message_loop()) { |
343 context_->ipc_message_loop()->PostTask(FROM_HERE, NewRunnableMethod( | 344 context_->ipc_message_loop()->PostTask( |
344 context_.get(), &Context::OnChannelClosed)); | 345 FROM_HERE, base::Bind(&Context::OnChannelClosed, context_.get())); |
345 } | 346 } |
346 } | 347 } |
347 | 348 |
348 bool ChannelProxy::Send(Message* message) { | 349 bool ChannelProxy::Send(Message* message) { |
349 if (outgoing_message_filter()) | 350 if (outgoing_message_filter()) |
350 message = outgoing_message_filter()->Rewrite(message); | 351 message = outgoing_message_filter()->Rewrite(message); |
351 | 352 |
352 #ifdef IPC_MESSAGE_LOG_ENABLED | 353 #ifdef IPC_MESSAGE_LOG_ENABLED |
353 Logging::GetInstance()->OnSendMessage(message, context_->channel_id()); | 354 Logging::GetInstance()->OnSendMessage(message, context_->channel_id()); |
354 #endif | 355 #endif |
355 | 356 |
356 context_->ipc_message_loop()->PostTask(FROM_HERE, | 357 context_->ipc_message_loop()->PostTask(FROM_HERE, |
357 new SendTask(context_.get(), message)); | 358 new SendTask(context_.get(), message)); |
358 return true; | 359 return true; |
359 } | 360 } |
360 | 361 |
361 void ChannelProxy::AddFilter(MessageFilter* filter) { | 362 void ChannelProxy::AddFilter(MessageFilter* filter) { |
362 context_->AddFilter(filter); | 363 context_->AddFilter(filter); |
363 } | 364 } |
364 | 365 |
365 void ChannelProxy::RemoveFilter(MessageFilter* filter) { | 366 void ChannelProxy::RemoveFilter(MessageFilter* filter) { |
366 context_->ipc_message_loop()->PostTask( | 367 context_->ipc_message_loop()->PostTask( |
367 FROM_HERE, NewRunnableMethod( | 368 FROM_HERE, base::Bind(&Context::OnRemoveFilter, context_.get(), |
368 context_.get(), | 369 make_scoped_refptr(filter))); |
369 &Context::OnRemoveFilter, | |
370 make_scoped_refptr(filter))); | |
371 } | 370 } |
372 | 371 |
373 void ChannelProxy::ClearIPCMessageLoop() { | 372 void ChannelProxy::ClearIPCMessageLoop() { |
374 context()->ClearIPCMessageLoop(); | 373 context()->ClearIPCMessageLoop(); |
375 } | 374 } |
376 | 375 |
377 #if defined(OS_POSIX) && !defined(OS_NACL) | 376 #if defined(OS_POSIX) && !defined(OS_NACL) |
378 // See the TODO regarding lazy initialization of the channel in | 377 // See the TODO regarding lazy initialization of the channel in |
379 // ChannelProxy::Init(). | 378 // ChannelProxy::Init(). |
380 int ChannelProxy::GetClientFileDescriptor() { | 379 int ChannelProxy::GetClientFileDescriptor() { |
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395 Channel* channel = context_.get()->channel_.get(); | 394 Channel* channel = context_.get()->channel_.get(); |
396 // Channel must have been created first. | 395 // Channel must have been created first. |
397 DCHECK(channel) << context_.get()->channel_id_; | 396 DCHECK(channel) << context_.get()->channel_id_; |
398 return channel->GetClientEuid(client_euid); | 397 return channel->GetClientEuid(client_euid); |
399 } | 398 } |
400 #endif | 399 #endif |
401 | 400 |
402 //----------------------------------------------------------------------------- | 401 //----------------------------------------------------------------------------- |
403 | 402 |
404 } // namespace IPC | 403 } // namespace IPC |
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