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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 "cc/base/worker_pool.h" | 5 #include "cc/base/worker_pool.h" |
| 6 | 6 |
| 7 #include <algorithm> | 7 #include <algorithm> |
| 8 | 8 |
| 9 #include "base/bind.h" | 9 #include "base/bind.h" |
| 10 #include "base/debug/trace_event.h" | 10 #include "base/debug/trace_event.h" |
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| 170 next_thread_index_(0), | 170 next_thread_index_(0), |
| 171 running_task_count_(0), | 171 running_task_count_(0), |
| 172 shutdown_(false) { | 172 shutdown_(false) { |
| 173 base::AutoLock lock(lock_); | 173 base::AutoLock lock(lock_); |
| 174 | 174 |
| 175 while (workers_.size() < num_threads) { | 175 while (workers_.size() < num_threads) { |
| 176 scoped_ptr<base::DelegateSimpleThread> worker = make_scoped_ptr( | 176 scoped_ptr<base::DelegateSimpleThread> worker = make_scoped_ptr( |
| 177 new base::DelegateSimpleThread( | 177 new base::DelegateSimpleThread( |
| 178 this, | 178 this, |
| 179 thread_name_prefix + | 179 thread_name_prefix + |
| 180 base::StringPrintf("Worker%lu", workers_.size() + 1).c_str())); | 180 base::StringPrintf( |
| 181 "Worker%lu", |
| 182 static_cast<unsigned long>(workers_.size() + 1)).c_str())); |
| 181 worker->Start(); | 183 worker->Start(); |
| 182 workers_.push_back(worker.Pass()); | 184 workers_.push_back(worker.Pass()); |
| 183 } | 185 } |
| 184 } | 186 } |
| 185 | 187 |
| 186 WorkerPool::Inner::~Inner() { | 188 WorkerPool::Inner::~Inner() { |
| 187 base::AutoLock lock(lock_); | 189 base::AutoLock lock(lock_); |
| 188 | 190 |
| 189 DCHECK(shutdown_); | 191 DCHECK(shutdown_); |
| 190 | 192 |
| 191 // Cancel all pending callbacks. | 193 // Cancel all pending callbacks. |
| 192 weak_ptr_factory_.InvalidateWeakPtrs(); | 194 weak_ptr_factory_.InvalidateWeakPtrs(); |
| 193 | 195 |
| 194 DCHECK_EQ(pending_tasks_.size(), 0); | 196 DCHECK_EQ(0u, pending_tasks_.size()); |
| 195 DCHECK_EQ(completed_tasks_.size(), 0); | 197 DCHECK_EQ(0u, completed_tasks_.size()); |
| 196 DCHECK_EQ(running_task_count_, 0); | 198 DCHECK_EQ(0u, running_task_count_); |
| 197 } | 199 } |
| 198 | 200 |
| 199 void WorkerPool::Inner::Shutdown() { | 201 void WorkerPool::Inner::Shutdown() { |
| 200 { | 202 { |
| 201 base::AutoLock lock(lock_); | 203 base::AutoLock lock(lock_); |
| 202 | 204 |
| 203 DCHECK(!shutdown_); | 205 DCHECK(!shutdown_); |
| 204 shutdown_ = true; | 206 shutdown_ = true; |
| 205 | 207 |
| 206 // Wake up a worker so it knows it should exit. This will cause all workers | 208 // Wake up a worker so it knows it should exit. This will cause all workers |
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| 423 // for completed tasks delay is 0. | 425 // for completed tasks delay is 0. |
| 424 check_for_completed_tasks_delay == base::TimeDelta()))) { | 426 check_for_completed_tasks_delay == base::TimeDelta()))) { |
| 425 } | 427 } |
| 426 | 428 |
| 427 WorkerPool::~WorkerPool() { | 429 WorkerPool::~WorkerPool() { |
| 428 Shutdown(); | 430 Shutdown(); |
| 429 | 431 |
| 430 // Cancel all pending callbacks. | 432 // Cancel all pending callbacks. |
| 431 weak_ptr_factory_.InvalidateWeakPtrs(); | 433 weak_ptr_factory_.InvalidateWeakPtrs(); |
| 432 | 434 |
| 433 DCHECK_EQ(completed_tasks_.size(), 0); | 435 DCHECK_EQ(0u, completed_tasks_.size()); |
| 434 } | 436 } |
| 435 | 437 |
| 436 void WorkerPool::Shutdown() { | 438 void WorkerPool::Shutdown() { |
| 437 inner_->Shutdown(); | 439 inner_->Shutdown(); |
| 438 DispatchCompletionCallbacks(); | 440 DispatchCompletionCallbacks(); |
| 439 } | 441 } |
| 440 | 442 |
| 441 void WorkerPool::PostTaskAndReply( | 443 void WorkerPool::PostTaskAndReply( |
| 442 const Callback& task, const base::Closure& reply) { | 444 const Callback& task, const base::Closure& reply) { |
| 443 PostTask(make_scoped_ptr(new WorkerPoolTaskImpl( | 445 PostTask(make_scoped_ptr(new WorkerPoolTaskImpl( |
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| 564 TRACE_EVENT_SCOPE_THREAD); | 566 TRACE_EVENT_SCOPE_THREAD); |
| 565 CancelCheckForCompletedTasks(); | 567 CancelCheckForCompletedTasks(); |
| 566 DispatchCompletionCallbacks(); | 568 DispatchCompletionCallbacks(); |
| 567 // Schedule another check for completed tasks if not idle. | 569 // Schedule another check for completed tasks if not idle. |
| 568 if (!is_idle) | 570 if (!is_idle) |
| 569 ScheduleCheckForCompletedTasks(); | 571 ScheduleCheckForCompletedTasks(); |
| 570 } | 572 } |
| 571 } | 573 } |
| 572 | 574 |
| 573 } // namespace cc | 575 } // namespace cc |
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