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Side by Side Diff: third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.h

Issue 2276353002: Remove after wakeup logic and replace PumpTask with Fences (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Slight simplification Created 4 years, 3 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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 THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_TASK_QUEUE_MANAGER_H_ 5 #ifndef THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_TASK_QUEUE_MANAGER_H_
6 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_TASK_QUEUE_MANAGER_H_ 6 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_TASK_QUEUE_MANAGER_H_
7 7
8 #include <map> 8 #include <map>
9 9
10 #include "base/atomic_sequence_num.h" 10 #include "base/atomic_sequence_num.h"
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157 void OnTaskQueueEnabled(internal::TaskQueueImpl* queue) override; 157 void OnTaskQueueEnabled(internal::TaskQueueImpl* queue) override;
158 void OnTriedToSelectBlockedWorkQueue( 158 void OnTriedToSelectBlockedWorkQueue(
159 internal::WorkQueue* work_queue) override; 159 internal::WorkQueue* work_queue) override;
160 160
161 // Called by the task queue to register a new pending task. 161 // Called by the task queue to register a new pending task.
162 void DidQueueTask(const internal::TaskQueueImpl::Task& pending_task); 162 void DidQueueTask(const internal::TaskQueueImpl::Task& pending_task);
163 163
164 // Use the selector to choose a pending task and run it. 164 // Use the selector to choose a pending task and run it.
165 void DoWork(base::TimeTicks run_time, bool from_main_thread); 165 void DoWork(base::TimeTicks run_time, bool from_main_thread);
166 166
167 // Delayed Tasks with run_times <= Now() are enqueued onto the work queue. 167 // Delayed Tasks with run_times <= Now() are enqueued onto the work queue and
168 // Reloads any empty work queues which have automatic pumping enabled and 168 // reloads any empty work queues.
169 // which are eligible to be auto pumped based on the |previous_task| which was 169 void UpdateWorkQueues(LazyNow lazy_now);
170 // run and |should_trigger_wakeup|. Call with an empty |previous_task| if no
171 // task was just run.
172 void UpdateWorkQueues(bool should_trigger_wakeup,
173 const internal::TaskQueueImpl::Task* previous_task,
174 LazyNow lazy_now);
175 170
176 // Chooses the next work queue to service. Returns true if |out_queue| 171 // Chooses the next work queue to service. Returns true if |out_queue|
177 // indicates the queue from which the next task should be run, false to 172 // indicates the queue from which the next task should be run, false to
178 // avoid running any tasks. 173 // avoid running any tasks.
179 bool SelectWorkQueueToService(internal::WorkQueue** out_work_queue); 174 bool SelectWorkQueueToService(internal::WorkQueue** out_work_queue);
180 175
181 // Runs a single nestable task from the |queue|. On exit, |out_task| will 176 // Runs a single nestable task from the |queue|. On exit, |out_task| will
182 // contain the task which was executed. Non-nestable task are reposted on the 177 // contain the task which was executed. Non-nestable task are reposted on the
183 // run loop. The queue must not be empty. 178 // run loop. The queue must not be empty.
184 enum class ProcessTaskResult { 179 enum class ProcessTaskResult {
185 DEFERRED, 180 DEFERRED,
186 EXECUTED, 181 EXECUTED,
187 TASK_QUEUE_MANAGER_DELETED 182 TASK_QUEUE_MANAGER_DELETED
188 }; 183 };
189 ProcessTaskResult ProcessTaskFromWorkQueue( 184 ProcessTaskResult ProcessTaskFromWorkQueue(internal::WorkQueue* work_queue);
190 internal::WorkQueue* work_queue,
191 internal::TaskQueueImpl::Task* out_previous_task);
192 185
193 bool RunsTasksOnCurrentThread() const; 186 bool RunsTasksOnCurrentThread() const;
194 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, 187 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
195 const base::Closure& task, 188 const base::Closure& task,
196 base::TimeDelta delay); 189 base::TimeDelta delay);
197 190
198 internal::EnqueueOrder GetNextSequenceNumber(); 191 internal::EnqueueOrder GetNextSequenceNumber();
199 192
200 // Calls MaybeAdvanceTime on all time domains and returns true if one of them 193 // Calls MaybeAdvanceTime on all time domains and returns true if one of them
201 // was able to advance. 194 // was able to advance.
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255 scoped_refptr<DeletionSentinel> deletion_sentinel_; 248 scoped_refptr<DeletionSentinel> deletion_sentinel_;
256 base::WeakPtrFactory<TaskQueueManager> weak_factory_; 249 base::WeakPtrFactory<TaskQueueManager> weak_factory_;
257 250
258 DISALLOW_COPY_AND_ASSIGN(TaskQueueManager); 251 DISALLOW_COPY_AND_ASSIGN(TaskQueueManager);
259 }; 252 };
260 253
261 } // namespace scheduler 254 } // namespace scheduler
262 } // namespace blink 255 } // namespace blink
263 256
264 #endif // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_TASK_QUEUE_MANAGER_ H_ 257 #endif // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_TASK_QUEUE_MANAGER_ H_
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