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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 "content/browser/child_process_launcher.h" | 5 #include "content/browser/child_process_launcher.h" |
6 | 6 |
7 #include <utility> // For std::pair. | 7 #include <utility> // For std::pair. |
8 | 8 |
9 #include "base/command_line.h" | 9 #include "base/command_line.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
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37 | 37 |
38 // Having the functionality of ChildProcessLauncher be in an internal | 38 // Having the functionality of ChildProcessLauncher be in an internal |
39 // ref counted object allows us to automatically terminate the process when the | 39 // ref counted object allows us to automatically terminate the process when the |
40 // parent class destructs, while still holding on to state that we need. | 40 // parent class destructs, while still holding on to state that we need. |
41 class ChildProcessLauncher::Context | 41 class ChildProcessLauncher::Context |
42 : public base::RefCountedThreadSafe<ChildProcessLauncher::Context> { | 42 : public base::RefCountedThreadSafe<ChildProcessLauncher::Context> { |
43 public: | 43 public: |
44 Context() | 44 Context() |
45 : client_(NULL), | 45 : client_(NULL), |
46 client_thread_id_(BrowserThread::UI), | 46 client_thread_id_(BrowserThread::UI), |
47 starting_(true), | 47 starting_(true) |
48 terminate_child_on_shutdown_(true) | |
49 #if defined(OS_LINUX) | 48 #if defined(OS_LINUX) |
50 , zygote_(false) | 49 , zygote_(false) |
51 #endif | 50 #endif |
52 { | 51 { |
53 } | 52 } |
54 | 53 |
55 void Launch( | 54 void Launch( |
56 #if defined(OS_WIN) | 55 #if defined(OS_WIN) |
57 const FilePath& exposed_dir, | 56 const FilePath& exposed_dir, |
58 #elif defined(OS_POSIX) | 57 #elif defined(OS_POSIX) |
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81 cmd_line)); | 80 cmd_line)); |
82 } | 81 } |
83 | 82 |
84 void ResetClient() { | 83 void ResetClient() { |
85 // No need for locking as this function gets called on the same thread that | 84 // No need for locking as this function gets called on the same thread that |
86 // client_ would be used. | 85 // client_ would be used. |
87 CHECK(BrowserThread::CurrentlyOn(client_thread_id_)); | 86 CHECK(BrowserThread::CurrentlyOn(client_thread_id_)); |
88 client_ = NULL; | 87 client_ = NULL; |
89 } | 88 } |
90 | 89 |
91 void set_terminate_child_on_shutdown(bool terminate_on_shutdown) { | |
92 terminate_child_on_shutdown_ = terminate_on_shutdown; | |
93 } | |
94 | |
95 private: | 90 private: |
96 friend class base::RefCountedThreadSafe<ChildProcessLauncher::Context>; | 91 friend class base::RefCountedThreadSafe<ChildProcessLauncher::Context>; |
97 friend class ChildProcessLauncher; | 92 friend class ChildProcessLauncher; |
98 | 93 |
99 ~Context() { | 94 ~Context() { |
100 Terminate(); | 95 Terminate(); |
101 } | 96 } |
102 | 97 |
103 void LaunchInternal( | 98 void LaunchInternal( |
104 #if defined(OS_WIN) | 99 #if defined(OS_WIN) |
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208 client_->OnProcessLaunched(); | 203 client_->OnProcessLaunched(); |
209 } else { | 204 } else { |
210 Terminate(); | 205 Terminate(); |
211 } | 206 } |
212 } | 207 } |
213 | 208 |
214 void Terminate() { | 209 void Terminate() { |
215 if (!process_.handle()) | 210 if (!process_.handle()) |
216 return; | 211 return; |
217 | 212 |
218 if (!terminate_child_on_shutdown_) | |
219 return; | |
220 | |
221 // On Posix, EnsureProcessTerminated can lead to 2 seconds of sleep! So | 213 // On Posix, EnsureProcessTerminated can lead to 2 seconds of sleep! So |
222 // don't this on the UI/IO threads. | 214 // don't this on the UI/IO threads. |
223 BrowserThread::PostTask( | 215 BrowserThread::PostTask( |
224 BrowserThread::PROCESS_LAUNCHER, FROM_HERE, | 216 BrowserThread::PROCESS_LAUNCHER, FROM_HERE, |
225 NewRunnableFunction( | 217 NewRunnableFunction( |
226 &ChildProcessLauncher::Context::TerminateInternal, | 218 &ChildProcessLauncher::Context::TerminateInternal, |
227 #if defined(OS_LINUX) | 219 #if defined(OS_LINUX) |
228 zygote_, | 220 zygote_, |
229 #endif | 221 #endif |
230 process_.handle())); | 222 process_.handle())); |
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258 ProcessWatcher::EnsureProcessTerminated(handle); | 250 ProcessWatcher::EnsureProcessTerminated(handle); |
259 } | 251 } |
260 #endif // OS_POSIX | 252 #endif // OS_POSIX |
261 process.Close(); | 253 process.Close(); |
262 } | 254 } |
263 | 255 |
264 Client* client_; | 256 Client* client_; |
265 BrowserThread::ID client_thread_id_; | 257 BrowserThread::ID client_thread_id_; |
266 base::Process process_; | 258 base::Process process_; |
267 bool starting_; | 259 bool starting_; |
268 // Controls whether the child process should be terminated on browser | |
269 // shutdown. Default behavior is to terminate the child. | |
270 bool terminate_child_on_shutdown_; | |
271 | 260 |
272 #if defined(OS_LINUX) | 261 #if defined(OS_LINUX) |
273 bool zygote_; | 262 bool zygote_; |
274 #endif | 263 #endif |
275 }; | 264 }; |
276 | 265 |
277 | 266 |
278 ChildProcessLauncher::ChildProcessLauncher( | 267 ChildProcessLauncher::ChildProcessLauncher( |
279 #if defined(OS_WIN) | 268 #if defined(OS_WIN) |
280 const FilePath& exposed_dir, | 269 const FilePath& exposed_dir, |
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337 } | 326 } |
338 | 327 |
339 void ChildProcessLauncher::SetProcessBackgrounded(bool background) { | 328 void ChildProcessLauncher::SetProcessBackgrounded(bool background) { |
340 BrowserThread::PostTask( | 329 BrowserThread::PostTask( |
341 BrowserThread::PROCESS_LAUNCHER, FROM_HERE, | 330 BrowserThread::PROCESS_LAUNCHER, FROM_HERE, |
342 NewRunnableMethod( | 331 NewRunnableMethod( |
343 context_.get(), | 332 context_.get(), |
344 &ChildProcessLauncher::Context::SetProcessBackgrounded, | 333 &ChildProcessLauncher::Context::SetProcessBackgrounded, |
345 background)); | 334 background)); |
346 } | 335 } |
347 | |
348 void ChildProcessLauncher::SetTerminateChildOnShutdown( | |
349 bool terminate_on_shutdown) { | |
350 if (context_) | |
351 context_->set_terminate_child_on_shutdown(terminate_on_shutdown); | |
352 } | |
353 | |
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