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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/scheduler/child/scheduler_helper.h"
#include "base/time/default_tick_clock.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/trace_event_argument.h"
#include "components/scheduler/base/task_queue_impl.h"
#include "components/scheduler/child/scheduler_tqm_delegate.h"
namespace scheduler {
SchedulerHelper::SchedulerHelper(
scoped_refptr<SchedulerTqmDelegate> task_queue_manager_delegate,
const char* tracing_category,
const char* disabled_by_default_tracing_category,
const char* disabled_by_default_verbose_tracing_category)
: task_queue_manager_delegate_(task_queue_manager_delegate),
task_queue_manager_(
new TaskQueueManager(task_queue_manager_delegate,
tracing_category,
disabled_by_default_tracing_category,
disabled_by_default_verbose_tracing_category)),
control_task_runner_(NewTaskQueue(
TaskQueue::Spec("control_tq")
.SetWakeupPolicy(TaskQueue::WakeupPolicy::DONT_WAKE_OTHER_QUEUES)
.SetShouldNotifyObservers(false))),
control_after_wakeup_task_runner_(NewTaskQueue(
TaskQueue::Spec("control_after_wakeup_tq")
.SetPumpPolicy(TaskQueue::PumpPolicy::AFTER_WAKEUP)
.SetWakeupPolicy(TaskQueue::WakeupPolicy::DONT_WAKE_OTHER_QUEUES)
.SetShouldNotifyObservers(false))),
default_task_runner_(NewTaskQueue(TaskQueue::Spec("default_tq")
.SetShouldMonitorQuiescence(true))),
observer_(nullptr),
tracing_category_(tracing_category),
disabled_by_default_tracing_category_(
disabled_by_default_tracing_category) {
control_task_runner_->SetQueuePriority(TaskQueue::CONTROL_PRIORITY);
control_after_wakeup_task_runner_->SetQueuePriority(
TaskQueue::CONTROL_PRIORITY);
task_queue_manager_->SetWorkBatchSize(4);
DCHECK(task_queue_manager_delegate_);
task_queue_manager_delegate_->SetDefaultTaskRunner(
default_task_runner_.get());
}
SchedulerHelper::~SchedulerHelper() {
Shutdown();
}
void SchedulerHelper::Shutdown() {
CheckOnValidThread();
if (task_queue_manager_)
task_queue_manager_->SetObserver(nullptr);
task_queue_manager_.reset();
task_queue_manager_delegate_->RestoreDefaultTaskRunner();
}
scoped_refptr<TaskQueue> SchedulerHelper::NewTaskQueue(
const TaskQueue::Spec& spec) {
DCHECK(task_queue_manager_.get());
return task_queue_manager_->NewTaskQueue(spec);
}
scoped_refptr<TaskQueue> SchedulerHelper::DefaultTaskRunner() {
CheckOnValidThread();
return default_task_runner_;
}
scoped_refptr<TaskQueue> SchedulerHelper::ControlTaskRunner() {
return control_task_runner_;
}
scoped_refptr<TaskQueue> SchedulerHelper::ControlAfterWakeUpTaskRunner() {
return control_after_wakeup_task_runner_;
}
void SchedulerHelper::SetWorkBatchSizeForTesting(size_t work_batch_size) {
CheckOnValidThread();
DCHECK(task_queue_manager_.get());
task_queue_manager_->SetWorkBatchSize(work_batch_size);
}
TaskQueueManager* SchedulerHelper::GetTaskQueueManagerForTesting() {
CheckOnValidThread();
return task_queue_manager_.get();
}
const scoped_refptr<SchedulerTqmDelegate>&
SchedulerHelper::scheduler_tqm_delegate() const {
return task_queue_manager_delegate_;
}
bool SchedulerHelper::GetAndClearSystemIsQuiescentBit() {
CheckOnValidThread();
DCHECK(task_queue_manager_.get());
return task_queue_manager_->GetAndClearSystemIsQuiescentBit();
}
void SchedulerHelper::AddTaskObserver(
base::MessageLoop::TaskObserver* task_observer) {
CheckOnValidThread();
if (task_queue_manager_)
task_queue_manager_->AddTaskObserver(task_observer);
}
void SchedulerHelper::RemoveTaskObserver(
base::MessageLoop::TaskObserver* task_observer) {
CheckOnValidThread();
if (task_queue_manager_)
task_queue_manager_->RemoveTaskObserver(task_observer);
}
void SchedulerHelper::SetObserver(Observer* observer) {
CheckOnValidThread();
observer_ = observer;
DCHECK(task_queue_manager_);
task_queue_manager_->SetObserver(this);
}
RealTimeDomain* SchedulerHelper::real_time_domain() const {
CheckOnValidThread();
DCHECK(task_queue_manager_);
return task_queue_manager_->real_time_domain();
}
void SchedulerHelper::RegisterTimeDomain(TimeDomain* time_domain) {
CheckOnValidThread();
DCHECK(task_queue_manager_);
task_queue_manager_->RegisterTimeDomain(time_domain);
}
void SchedulerHelper::UnregisterTimeDomain(TimeDomain* time_domain) {
CheckOnValidThread();
if (task_queue_manager_)
task_queue_manager_->UnregisterTimeDomain(time_domain);
}
void SchedulerHelper::OnUnregisterTaskQueue(
const scoped_refptr<TaskQueue>& queue) {
if (observer_)
observer_->OnUnregisterTaskQueue(queue);
}
void SchedulerHelper::OnTriedToExecuteBlockedTask(
const TaskQueue& queue,
const base::PendingTask& task) {
if (observer_)
observer_->OnTriedToExecuteBlockedTask(queue, task);
}
TaskQueue* SchedulerHelper::CurrentlyExecutingTaskQueue() const {
if (!task_queue_manager_)
return nullptr;
return task_queue_manager_->currently_executing_task_queue();
}
} // namespace scheduler
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