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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/browser/browser_thread_impl.h" | 5 #include "content/browser/browser_thread_impl.h" |
6 | 6 |
7 #include "base/atomicops.h" | 7 #include "base/atomicops.h" |
8 #include "base/bind.h" | 8 #include "base/bind.h" |
| 9 #include "base/compiler_specific.h" |
9 #include "base/lazy_instance.h" | 10 #include "base/lazy_instance.h" |
10 #include "base/message_loop.h" | 11 #include "base/message_loop.h" |
11 #include "base/message_loop_proxy.h" | 12 #include "base/message_loop_proxy.h" |
12 #include "base/threading/sequenced_worker_pool.h" | 13 #include "base/threading/sequenced_worker_pool.h" |
13 #include "base/threading/thread_restrictions.h" | 14 #include "base/threading/thread_restrictions.h" |
14 | 15 |
15 namespace content { | 16 namespace content { |
16 | 17 |
17 namespace { | 18 namespace { |
18 | 19 |
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178 // An implementation of MessageLoopProxy to be used in conjunction | 179 // An implementation of MessageLoopProxy to be used in conjunction |
179 // with BrowserThread. | 180 // with BrowserThread. |
180 class BrowserThreadMessageLoopProxy : public base::MessageLoopProxy { | 181 class BrowserThreadMessageLoopProxy : public base::MessageLoopProxy { |
181 public: | 182 public: |
182 explicit BrowserThreadMessageLoopProxy(BrowserThread::ID identifier) | 183 explicit BrowserThreadMessageLoopProxy(BrowserThread::ID identifier) |
183 : id_(identifier) { | 184 : id_(identifier) { |
184 } | 185 } |
185 | 186 |
186 // MessageLoopProxy implementation. | 187 // MessageLoopProxy implementation. |
187 virtual bool PostTask(const tracked_objects::Location& from_here, | 188 virtual bool PostTask(const tracked_objects::Location& from_here, |
188 const base::Closure& task) { | 189 const base::Closure& task) OVERRIDE { |
189 return BrowserThread::PostTask(id_, from_here, task); | 190 return BrowserThread::PostTask(id_, from_here, task); |
190 } | 191 } |
191 | 192 |
192 virtual bool PostDelayedTask(const tracked_objects::Location& from_here, | 193 virtual bool PostDelayedTask( |
193 const base::Closure& task, int64 delay_ms) { | 194 const tracked_objects::Location& from_here, |
| 195 const base::Closure& task, int64 delay_ms) OVERRIDE{ |
194 return BrowserThread::PostDelayedTask(id_, from_here, task, delay_ms); | 196 return BrowserThread::PostDelayedTask(id_, from_here, task, delay_ms); |
195 } | 197 } |
196 | 198 |
197 virtual bool PostNonNestableTask(const tracked_objects::Location& from_here, | 199 virtual bool PostNonNestableTask(const tracked_objects::Location& from_here, |
198 const base::Closure& task) { | 200 const base::Closure& task) OVERRIDE { |
199 return BrowserThread::PostNonNestableTask(id_, from_here, task); | 201 return BrowserThread::PostNonNestableTask(id_, from_here, task); |
200 } | 202 } |
201 | 203 |
202 virtual bool PostNonNestableDelayedTask( | 204 virtual bool PostNonNestableDelayedTask( |
203 const tracked_objects::Location& from_here, | 205 const tracked_objects::Location& from_here, |
204 const base::Closure& task, | 206 const base::Closure& task, |
205 int64 delay_ms) { | 207 int64 delay_ms) OVERRIDE { |
206 return BrowserThread::PostNonNestableDelayedTask(id_, from_here, task, | 208 return BrowserThread::PostNonNestableDelayedTask(id_, from_here, task, |
207 delay_ms); | 209 delay_ms); |
208 } | 210 } |
209 | 211 |
210 virtual bool BelongsToCurrentThread() { | 212 virtual bool RunsTasksOnCurrentThread() const OVERRIDE { |
211 return BrowserThread::CurrentlyOn(id_); | 213 return BrowserThread::CurrentlyOn(id_); |
212 } | 214 } |
213 | 215 |
214 private: | 216 private: |
215 BrowserThread::ID id_; | 217 BrowserThread::ID id_; |
216 DISALLOW_COPY_AND_ASSIGN(BrowserThreadMessageLoopProxy); | 218 DISALLOW_COPY_AND_ASSIGN(BrowserThreadMessageLoopProxy); |
217 }; | 219 }; |
218 | 220 |
219 // static | 221 // static |
220 bool BrowserThread::PostBlockingPoolTask( | 222 bool BrowserThread::PostBlockingPoolTask( |
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362 AtomicWord* storage = reinterpret_cast<AtomicWord*>( | 364 AtomicWord* storage = reinterpret_cast<AtomicWord*>( |
363 &globals.thread_delegates[identifier]); | 365 &globals.thread_delegates[identifier]); |
364 AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange( | 366 AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange( |
365 storage, reinterpret_cast<AtomicWord>(delegate)); | 367 storage, reinterpret_cast<AtomicWord>(delegate)); |
366 | 368 |
367 // This catches registration when previously registered. | 369 // This catches registration when previously registered. |
368 DCHECK(!delegate || !old_pointer); | 370 DCHECK(!delegate || !old_pointer); |
369 } | 371 } |
370 | 372 |
371 } // namespace content | 373 } // namespace content |
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