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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project 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 "src/libplatform/task-queue.h" | 5 #include "src/libplatform/task-queue.h" |
6 | 6 |
7 #include "src/base/logging.h" | 7 #include "src/base/logging.h" |
8 | 8 |
9 namespace v8 { | 9 namespace v8 { |
10 namespace platform { | 10 namespace platform { |
11 | 11 |
12 TaskQueue::TaskQueue() : process_queue_semaphore_(0), terminated_(false) {} | 12 TaskQueue::TaskQueue() : process_queue_semaphore_(0), terminated_(false) {} |
13 | 13 |
14 | 14 |
15 TaskQueue::~TaskQueue() { | 15 TaskQueue::~TaskQueue() { |
16 base::LockGuard<base::Mutex> guard(&lock_); | 16 base::LockGuard<base::Mutex> guard(&lock_); |
17 ASSERT(terminated_); | 17 DCHECK(terminated_); |
18 ASSERT(task_queue_.empty()); | 18 DCHECK(task_queue_.empty()); |
19 } | 19 } |
20 | 20 |
21 | 21 |
22 void TaskQueue::Append(Task* task) { | 22 void TaskQueue::Append(Task* task) { |
23 base::LockGuard<base::Mutex> guard(&lock_); | 23 base::LockGuard<base::Mutex> guard(&lock_); |
24 ASSERT(!terminated_); | 24 DCHECK(!terminated_); |
25 task_queue_.push(task); | 25 task_queue_.push(task); |
26 process_queue_semaphore_.Signal(); | 26 process_queue_semaphore_.Signal(); |
27 } | 27 } |
28 | 28 |
29 | 29 |
30 Task* TaskQueue::GetNext() { | 30 Task* TaskQueue::GetNext() { |
31 for (;;) { | 31 for (;;) { |
32 { | 32 { |
33 base::LockGuard<base::Mutex> guard(&lock_); | 33 base::LockGuard<base::Mutex> guard(&lock_); |
34 if (!task_queue_.empty()) { | 34 if (!task_queue_.empty()) { |
35 Task* result = task_queue_.front(); | 35 Task* result = task_queue_.front(); |
36 task_queue_.pop(); | 36 task_queue_.pop(); |
37 return result; | 37 return result; |
38 } | 38 } |
39 if (terminated_) { | 39 if (terminated_) { |
40 process_queue_semaphore_.Signal(); | 40 process_queue_semaphore_.Signal(); |
41 return NULL; | 41 return NULL; |
42 } | 42 } |
43 } | 43 } |
44 process_queue_semaphore_.Wait(); | 44 process_queue_semaphore_.Wait(); |
45 } | 45 } |
46 } | 46 } |
47 | 47 |
48 | 48 |
49 void TaskQueue::Terminate() { | 49 void TaskQueue::Terminate() { |
50 base::LockGuard<base::Mutex> guard(&lock_); | 50 base::LockGuard<base::Mutex> guard(&lock_); |
51 ASSERT(!terminated_); | 51 DCHECK(!terminated_); |
52 terminated_ = true; | 52 terminated_ = true; |
53 process_queue_semaphore_.Signal(); | 53 process_queue_semaphore_.Signal(); |
54 } | 54 } |
55 | 55 |
56 } } // namespace v8::platform | 56 } } // namespace v8::platform |
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