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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 #ifndef BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_ | 5 #ifndef BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_ |
6 #define BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_ | 6 #define BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "base/base_export.h" | 10 #include "base/base_export.h" |
11 #include "base/macros.h" | 11 #include "base/macros.h" |
12 #include "base/task_scheduler/task_tracker.h" | 12 #include "base/task_scheduler/task_tracker.h" |
13 | 13 |
14 namespace base { | 14 namespace base { |
15 | 15 |
16 class MessageLoopForIO; | 16 class MessageLoopForIO; |
17 | 17 |
18 namespace internal { | 18 namespace internal { |
19 | 19 |
20 struct Task; | 20 struct Task; |
21 | 21 |
22 // A TaskTracker that instantiates a FileDescriptorWatcher in the scope in which | 22 // A TaskTracker that instantiates a FileDescriptorWatcher in the scope in which |
23 // a task runs. Used on all POSIX platforms except NaCl SFI. | 23 // a task runs. Used on all POSIX platforms except NaCl SFI. Start() must be |
24 // called before the TaskTracker can run tasks. | |
24 class BASE_EXPORT TaskTrackerPosix : public TaskTracker { | 25 class BASE_EXPORT TaskTrackerPosix : public TaskTracker { |
25 public: | 26 public: |
27 TaskTrackerPosix(); | |
28 ~TaskTrackerPosix(); | |
29 | |
26 // |watch_file_descriptor_message_loop| is used to setup FileDescriptorWatcher | 30 // |watch_file_descriptor_message_loop| is used to setup FileDescriptorWatcher |
27 // in the scope in which a Task runs. | 31 // in the scope in which a Task runs. |
28 TaskTrackerPosix(MessageLoopForIO* watch_file_descriptor_message_loop); | 32 void Start(MessageLoopForIO* watch_file_descriptor_message_loop); |
29 ~TaskTrackerPosix(); | |
30 | 33 |
31 private: | 34 private: |
32 // TaskTracker: | 35 // TaskTracker: |
33 void PerformRunTask(std::unique_ptr<Task> task) override; | 36 void PerformRunTask(std::unique_ptr<Task> task) override; |
34 | 37 |
35 MessageLoopForIO* const watch_file_descriptor_message_loop_; | 38 // Set in Start() and cannot be read before Start(). |
gab
2017/04/12 19:17:34
s/cannot/must not/
fdoray
2017/04/13 12:29:08
n/a. superseded by comment about external synchron
| |
39 MessageLoopForIO* watch_file_descriptor_message_loop_; | |
36 | 40 |
37 DISALLOW_COPY_AND_ASSIGN(TaskTrackerPosix); | 41 DISALLOW_COPY_AND_ASSIGN(TaskTrackerPosix); |
38 }; | 42 }; |
39 | 43 |
40 } // namespace internal | 44 } // namespace internal |
41 } // namespace base | 45 } // namespace base |
42 | 46 |
43 #endif // BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_ | 47 #endif // BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_ |
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