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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "content/common/child_thread.h" | 5 #include "content/common/child_thread.h" |
6 | 6 |
7 #include "base/allocator/allocator_extension.h" | 7 #include "base/allocator/allocator_extension.h" |
8 #include "base/command_line.h" | 8 #include "base/command_line.h" |
9 #include "base/message_loop.h" | 9 #include "base/message_loop.h" |
10 #include "base/process.h" | 10 #include "base/process.h" |
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76 channel_->Close(); | 76 channel_->Close(); |
77 | 77 |
78 // The ChannelProxy object caches a pointer to the IPC thread, so need to | 78 // The ChannelProxy object caches a pointer to the IPC thread, so need to |
79 // reset it as it's not guaranteed to outlive this object. | 79 // reset it as it's not guaranteed to outlive this object. |
80 // NOTE: this also has the side-effect of not closing the main IPC channel to | 80 // NOTE: this also has the side-effect of not closing the main IPC channel to |
81 // the browser process. This is needed because this is the signal that the | 81 // the browser process. This is needed because this is the signal that the |
82 // browser uses to know that this process has died, so we need it to be alive | 82 // browser uses to know that this process has died, so we need it to be alive |
83 // until this process is shut down, and the OS closes the handle | 83 // until this process is shut down, and the OS closes the handle |
84 // automatically. We used to watch the object handle on Windows to do this, | 84 // automatically. We used to watch the object handle on Windows to do this, |
85 // but it wasn't possible to do so on POSIX. | 85 // but it wasn't possible to do so on POSIX. |
86 channel_->ClearIPCMessageLoop(); | 86 channel_->ClearIPCTaskRunner(); |
87 } | 87 } |
88 | 88 |
89 void ChildThread::OnChannelError() { | 89 void ChildThread::OnChannelError() { |
90 set_on_channel_error_called(true); | 90 set_on_channel_error_called(true); |
91 MessageLoop::current()->Quit(); | 91 MessageLoop::current()->Quit(); |
92 } | 92 } |
93 | 93 |
94 bool ChildThread::Send(IPC::Message* msg) { | 94 bool ChildThread::Send(IPC::Message* msg) { |
95 DCHECK(MessageLoop::current() == message_loop()); | 95 DCHECK(MessageLoop::current() == message_loop()); |
96 if (!channel_.get()) { | 96 if (!channel_.get()) { |
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276 } | 276 } |
277 | 277 |
278 // The child process shutdown sequence is a request response based mechanism, | 278 // The child process shutdown sequence is a request response based mechanism, |
279 // where we send out an initial feeler request to the child process host | 279 // where we send out an initial feeler request to the child process host |
280 // instance in the browser to verify if it's ok to shutdown the child process. | 280 // instance in the browser to verify if it's ok to shutdown the child process. |
281 // The browser then sends back a response if it's ok to shutdown. This avoids | 281 // The browser then sends back a response if it's ok to shutdown. This avoids |
282 // race conditions if the process refcount is 0 but there's an IPC message | 282 // race conditions if the process refcount is 0 but there's an IPC message |
283 // inflight that would addref it. | 283 // inflight that would addref it. |
284 Send(new ChildProcessHostMsg_ShutdownRequest); | 284 Send(new ChildProcessHostMsg_ShutdownRequest); |
285 } | 285 } |
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