jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 1 | // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
danakj | 0393da3 | 2015-03-10 09:31:16 +0900 | [diff] [blame] | 5 | #ifndef BASE_PENDING_TASK_H_ |
| 6 | #define BASE_PENDING_TASK_H_ |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 7 | |
ajwong | 8d51d07 | 2017-02-10 08:52:40 +0900 | [diff] [blame^] | 8 | #include <array> |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 9 | #include <queue> |
| 10 | |
rsleevi@chromium.org | 3f19acb | 2011-11-18 15:08:02 +0900 | [diff] [blame] | 11 | #include "base/base_export.h" |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 12 | #include "base/callback.h" |
| 13 | #include "base/location.h" |
avi@chromium.org | b45ec93 | 2013-06-29 00:14:18 +0900 | [diff] [blame] | 14 | #include "base/time/time.h" |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 15 | #include "base/tracking_info.h" |
| 16 | |
| 17 | namespace base { |
| 18 | |
| 19 | // Contains data about a pending task. Stored in TaskQueue and DelayedTaskQueue |
| 20 | // for use by classes that queue and execute tasks. |
rsleevi@chromium.org | 3f19acb | 2011-11-18 15:08:02 +0900 | [diff] [blame] | 21 | struct BASE_EXPORT PendingTask : public TrackingInfo { |
tzik | e82b7e8 | 2016-10-14 23:34:58 +0900 | [diff] [blame] | 22 | PendingTask(const tracked_objects::Location& posted_from, OnceClosure task); |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 23 | PendingTask(const tracked_objects::Location& posted_from, |
tzik | e82b7e8 | 2016-10-14 23:34:58 +0900 | [diff] [blame] | 24 | OnceClosure task, |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 25 | TimeTicks delayed_run_time, |
| 26 | bool nestable); |
tzik | c74f6fe | 2016-07-08 05:20:06 +0900 | [diff] [blame] | 27 | PendingTask(PendingTask&& other); |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 28 | ~PendingTask(); |
| 29 | |
tzik | c74f6fe | 2016-07-08 05:20:06 +0900 | [diff] [blame] | 30 | PendingTask& operator=(PendingTask&& other); |
| 31 | |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 32 | // Used to support sorting. |
| 33 | bool operator<(const PendingTask& other) const; |
| 34 | |
| 35 | // The task to run. |
tzik | e82b7e8 | 2016-10-14 23:34:58 +0900 | [diff] [blame] | 36 | OnceClosure task; |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 37 | |
| 38 | // The site this PendingTask was posted from. |
| 39 | tracked_objects::Location posted_from; |
| 40 | |
ajwong | 8d51d07 | 2017-02-10 08:52:40 +0900 | [diff] [blame^] | 41 | // Task backtrace. |
| 42 | std::array<const void*, 4> task_backtrace; |
| 43 | |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 44 | // Secondary sort key for run time. |
| 45 | int sequence_num; |
| 46 | |
| 47 | // OK to dispatch from a nested loop. |
| 48 | bool nestable; |
cpu | 410a98e | 2014-08-29 08:25:37 +0900 | [diff] [blame] | 49 | |
| 50 | // Needs high resolution timers. |
| 51 | bool is_high_res; |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 52 | }; |
| 53 | |
danakj | b82557d | 2016-06-16 05:47:47 +0900 | [diff] [blame] | 54 | using TaskQueue = std::queue<PendingTask>; |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 55 | |
jhawkins@chromium.org | 303de23 | 2011-11-18 08:26:53 +0900 | [diff] [blame] | 56 | // PendingTasks are sorted by their |delayed_run_time| property. |
danakj | b82557d | 2016-06-16 05:47:47 +0900 | [diff] [blame] | 57 | using DelayedTaskQueue = std::priority_queue<base::PendingTask>; |
jhawkins@chromium.org | 303de23 | 2011-11-18 08:26:53 +0900 | [diff] [blame] | 58 | |
jhawkins@chromium.org | 2af12f2 | 2011-11-16 08:36:30 +0900 | [diff] [blame] | 59 | } // namespace base |
| 60 | |
danakj | 0393da3 | 2015-03-10 09:31:16 +0900 | [diff] [blame] | 61 | #endif // BASE_PENDING_TASK_H_ |