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// Copyright 2014 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/worker_scheduler_impl.h"
#include "base/bind.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/trace_event_argument.h"
#include "components/scheduler/base/task_queue.h"
#include "components/scheduler/child/scheduler_tqm_delegate.h"
namespace scheduler {
WorkerSchedulerImpl::WorkerSchedulerImpl(
scoped_refptr<SchedulerTqmDelegate> main_task_runner)
: helper_(main_task_runner,
"worker.scheduler",
TRACE_DISABLED_BY_DEFAULT("worker.scheduler"),
TRACE_DISABLED_BY_DEFAULT("worker.scheduler.debug")),
idle_helper_(&helper_,
this,
"worker.scheduler",
TRACE_DISABLED_BY_DEFAULT("worker.scheduler"),
"WorkerSchedulerIdlePeriod",
base::TimeDelta::FromMilliseconds(300)) {
initialized_ = false;
TRACE_EVENT_OBJECT_CREATED_WITH_ID(
TRACE_DISABLED_BY_DEFAULT("worker.scheduler"), "WorkerScheduler", this);
}
WorkerSchedulerImpl::~WorkerSchedulerImpl() {
TRACE_EVENT_OBJECT_DELETED_WITH_ID(
TRACE_DISABLED_BY_DEFAULT("worker.scheduler"), "WorkerScheduler", this);
}
void WorkerSchedulerImpl::Init() {
initialized_ = true;
idle_helper_.EnableLongIdlePeriod();
}
scoped_refptr<TaskQueue> WorkerSchedulerImpl::DefaultTaskRunner() {
DCHECK(initialized_);
return helper_.DefaultTaskRunner();
}
scoped_refptr<SingleThreadIdleTaskRunner>
WorkerSchedulerImpl::IdleTaskRunner() {
DCHECK(initialized_);
return idle_helper_.IdleTaskRunner();
}
bool WorkerSchedulerImpl::CanExceedIdleDeadlineIfRequired() const {
DCHECK(initialized_);
return idle_helper_.CanExceedIdleDeadlineIfRequired();
}
bool WorkerSchedulerImpl::ShouldYieldForHighPriorityWork() {
// We don't consider any work as being high priority on workers.
return false;
}
void WorkerSchedulerImpl::AddTaskObserver(
base::MessageLoop::TaskObserver* task_observer) {
DCHECK(initialized_);
helper_.AddTaskObserver(task_observer);
}
void WorkerSchedulerImpl::RemoveTaskObserver(
base::MessageLoop::TaskObserver* task_observer) {
DCHECK(initialized_);
helper_.RemoveTaskObserver(task_observer);
}
void WorkerSchedulerImpl::Shutdown() {
DCHECK(initialized_);
helper_.Shutdown();
}
SchedulerHelper* WorkerSchedulerImpl::GetSchedulerHelperForTesting() {
return &helper_;
}
bool WorkerSchedulerImpl::CanEnterLongIdlePeriod(base::TimeTicks,
base::TimeDelta*) {
return true;
}
base::TimeTicks WorkerSchedulerImpl::CurrentIdleTaskDeadlineForTesting() const {
return idle_helper_.CurrentIdleTaskDeadline();
}
} // namespace scheduler
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