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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 "base/threading/thread.h" | 5 #include "base/threading/thread.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/lazy_instance.h" | 8 #include "base/lazy_instance.h" |
| 9 #include "base/location.h" | 9 #include "base/location.h" |
| 10 #include "base/synchronization/waitable_event.h" | 10 #include "base/synchronization/waitable_event.h" |
| 11 #include "base/third_party/dynamic_annotations/dynamic_annotations.h" | 11 #include "base/third_party/dynamic_annotations/dynamic_annotations.h" |
| 12 #include "base/threading/thread_id_name_manager.h" | 12 #include "base/threading/thread_id_name_manager.h" |
| 13 #include "base/threading/thread_local.h" | 13 #include "base/threading/thread_local.h" |
| 14 #include "base/threading/thread_restrictions.h" | 14 #include "base/threading/thread_restrictions.h" |
| 15 | 15 |
| 16 #if defined(OS_WIN) | |
| 17 #include "base/win/scoped_com_initializer.h" | |
| 18 #endif | |
| 19 | |
| 20 namespace base { | 16 namespace base { |
| 21 | 17 |
| 22 namespace { | 18 namespace { |
| 23 | 19 |
| 24 // We use this thread-local variable to record whether or not a thread exited | 20 // We use this thread-local variable to record whether or not a thread exited |
| 25 // because its Stop method was called. This allows us to catch cases where | 21 // because its Stop method was called. This allows us to catch cases where |
| 26 // MessageLoop::QuitWhenIdle() is called directly, which is unexpected when | 22 // MessageLoop::QuitWhenIdle() is called directly, which is unexpected when |
| 27 // using a Thread to setup and run a MessageLoop. | 23 // using a Thread to setup and run a MessageLoop. |
| 28 base::LazyInstance<base::ThreadLocalBoolean> lazy_tls_bool = | 24 base::LazyInstance<base::ThreadLocalBoolean> lazy_tls_bool = |
| 29 LAZY_INSTANCE_INITIALIZER; | 25 LAZY_INSTANCE_INITIALIZER; |
| (...skipping 19 matching lines...) Expand all Loading... |
| 49 timer_slack(TIMER_SLACK_NONE), | 45 timer_slack(TIMER_SLACK_NONE), |
| 50 stack_size(size), | 46 stack_size(size), |
| 51 priority(ThreadPriority::NORMAL) { | 47 priority(ThreadPriority::NORMAL) { |
| 52 } | 48 } |
| 53 | 49 |
| 54 Thread::Options::~Options() { | 50 Thread::Options::~Options() { |
| 55 } | 51 } |
| 56 | 52 |
| 57 Thread::Thread(const std::string& name) | 53 Thread::Thread(const std::string& name) |
| 58 : | 54 : |
| 59 #if defined(OS_WIN) | |
| 60 com_status_(NONE), | |
| 61 #endif | |
| 62 stopping_(false), | 55 stopping_(false), |
| 63 running_(false), | 56 running_(false), |
| 64 thread_(0), | 57 thread_(0), |
| 65 message_loop_(nullptr), | 58 message_loop_(nullptr), |
| 66 message_loop_timer_slack_(TIMER_SLACK_NONE), | 59 message_loop_timer_slack_(TIMER_SLACK_NONE), |
| 67 name_(name) { | 60 name_(name) { |
| 68 } | 61 } |
| 69 | 62 |
| 70 Thread::~Thread() { | 63 Thread::~Thread() { |
| 71 Stop(); | 64 Stop(); |
| 72 } | 65 } |
| 73 | 66 |
| 74 bool Thread::Start() { | 67 bool Thread::Start() { |
| 75 Options options; | 68 Options options; |
| 76 #if defined(OS_WIN) | |
| 77 if (com_status_ == STA) | |
| 78 options.message_loop_type = MessageLoop::TYPE_UI; | |
| 79 #endif | |
| 80 return StartWithOptions(options); | 69 return StartWithOptions(options); |
| 81 } | 70 } |
| 82 | 71 |
| 83 bool Thread::StartWithOptions(const Options& options) { | 72 bool Thread::StartWithOptions(const Options& options) { |
| 84 DCHECK(!message_loop_); | 73 DCHECK(!message_loop_); |
| 85 #if defined(OS_WIN) | |
| 86 DCHECK((com_status_ != STA) || | |
| 87 (options.message_loop_type == MessageLoop::TYPE_UI)); | |
| 88 #endif | |
| 89 | |
| 90 SetThreadWasQuitProperly(false); | 74 SetThreadWasQuitProperly(false); |
| 91 | 75 |
| 92 MessageLoop::Type type = options.message_loop_type; | 76 MessageLoop::Type type = options.message_loop_type; |
| 93 if (!options.message_pump_factory.is_null()) | 77 if (!options.message_pump_factory.is_null()) |
| 94 type = MessageLoop::TYPE_CUSTOM; | 78 type = MessageLoop::TYPE_CUSTOM; |
| 95 | 79 |
| 96 message_loop_timer_slack_ = options.timer_slack; | 80 message_loop_timer_slack_ = options.timer_slack; |
| 97 message_loop_ = new MessageLoop(type, options.message_pump_factory); | 81 message_loop_ = new MessageLoop(type, options.message_pump_factory); |
| 98 | 82 |
| 99 start_event_.reset(new WaitableEvent(false, false)); | 83 start_event_.reset(new WaitableEvent(false, false)); |
| (...skipping 118 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 218 PlatformThread::SetName(name_.c_str()); | 202 PlatformThread::SetName(name_.c_str()); |
| 219 ANNOTATE_THREAD_NAME(name_.c_str()); // Tell the name to race detector. | 203 ANNOTATE_THREAD_NAME(name_.c_str()); // Tell the name to race detector. |
| 220 | 204 |
| 221 // Lazily initialize the message_loop so that it can run on this thread. | 205 // Lazily initialize the message_loop so that it can run on this thread. |
| 222 DCHECK(message_loop_); | 206 DCHECK(message_loop_); |
| 223 scoped_ptr<MessageLoop> message_loop(message_loop_); | 207 scoped_ptr<MessageLoop> message_loop(message_loop_); |
| 224 message_loop_->BindToCurrentThread(); | 208 message_loop_->BindToCurrentThread(); |
| 225 message_loop_->set_thread_name(name_); | 209 message_loop_->set_thread_name(name_); |
| 226 message_loop_->SetTimerSlack(message_loop_timer_slack_); | 210 message_loop_->SetTimerSlack(message_loop_timer_slack_); |
| 227 | 211 |
| 228 #if defined(OS_WIN) | |
| 229 scoped_ptr<win::ScopedCOMInitializer> com_initializer; | |
| 230 if (com_status_ != NONE) { | |
| 231 com_initializer.reset((com_status_ == STA) ? | |
| 232 new win::ScopedCOMInitializer() : | |
| 233 new win::ScopedCOMInitializer(win::ScopedCOMInitializer::kMTA)); | |
| 234 } | |
| 235 #endif | |
| 236 | |
| 237 // Make sure the thread_id() returns current thread. | 212 // Make sure the thread_id() returns current thread. |
| 238 // (This internally acquires lock against PlatformThread::Create) | 213 // (This internally acquires lock against PlatformThread::Create) |
| 239 DCHECK_EQ(thread_id(), PlatformThread::CurrentId()); | 214 DCHECK_EQ(thread_id(), PlatformThread::CurrentId()); |
| 240 | 215 |
| 241 // Let the thread do extra initialization. | 216 // Let the thread do extra initialization. |
| 242 Init(); | 217 Init(); |
| 243 | 218 |
| 244 { | 219 { |
| 245 AutoLock lock(running_lock_); | 220 AutoLock lock(running_lock_); |
| 246 running_ = true; | 221 running_ = true; |
| 247 } | 222 } |
| 248 | 223 |
| 249 start_event_->Signal(); | 224 start_event_->Signal(); |
| 250 | 225 |
| 251 Run(message_loop_); | 226 Run(message_loop_); |
| 252 | 227 |
| 253 { | 228 { |
| 254 AutoLock lock(running_lock_); | 229 AutoLock lock(running_lock_); |
| 255 running_ = false; | 230 running_ = false; |
| 256 } | 231 } |
| 257 | 232 |
| 258 // Let the thread do extra cleanup. | 233 // Let the thread do extra cleanup. |
| 259 CleanUp(); | 234 CleanUp(); |
| 260 | 235 |
| 261 #if defined(OS_WIN) | |
| 262 com_initializer.reset(); | |
| 263 #endif | |
| 264 | |
| 265 // Assert that MessageLoop::Quit was called by ThreadQuitHelper. | 236 // Assert that MessageLoop::Quit was called by ThreadQuitHelper. |
| 266 DCHECK(GetThreadWasQuitProperly()); | 237 DCHECK(GetThreadWasQuitProperly()); |
| 267 | 238 |
| 268 // We can't receive messages anymore. | 239 // We can't receive messages anymore. |
| 269 // (The message loop is destructed at the end of this block) | 240 // (The message loop is destructed at the end of this block) |
| 270 message_loop_ = NULL; | 241 message_loop_ = NULL; |
| 271 } | 242 } |
| 272 | 243 |
| 273 } // namespace base | 244 } // namespace base |
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