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c374d11fac
Bug: b/235812579 Change-Id: I9fa3dc4a65044df8b44fff4e9bfeac7233fa381c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/266080 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37248}
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
/*
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* Copyright 2019 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/task_utils/repeating_task.h"
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#include "absl/memory/memory.h"
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#include "api/task_queue/pending_task_safety_flag.h"
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#include "api/task_queue/to_queued_task.h"
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#include "rtc_base/logging.h"
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#include "rtc_base/time_utils.h"
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namespace webrtc {
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namespace webrtc_repeating_task_impl {
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RepeatingTaskBase::RepeatingTaskBase(
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TaskQueueBase* task_queue,
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TaskQueueBase::DelayPrecision precision,
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TimeDelta first_delay,
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Clock* clock,
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rtc::scoped_refptr<PendingTaskSafetyFlag> alive_flag)
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: task_queue_(task_queue),
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precision_(precision),
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clock_(clock),
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next_run_time_(clock_->CurrentTime() + first_delay),
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alive_flag_(std::move(alive_flag)) {}
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RepeatingTaskBase::~RepeatingTaskBase() = default;
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bool RepeatingTaskBase::Run() {
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RTC_DCHECK_RUN_ON(task_queue_);
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// Return true to tell the TaskQueue to destruct this object.
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if (!alive_flag_->alive())
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return true;
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TimeDelta delay = RunClosure();
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RTC_DCHECK_GE(delay, TimeDelta::Zero());
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// A delay of +infinity means that the task should not be run again.
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// Alternatively, the closure might have stopped this task. In either which
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// case we return true to destruct this object.
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if (delay.IsPlusInfinity() || !alive_flag_->alive())
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return true;
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TimeDelta lost_time = clock_->CurrentTime() - next_run_time_;
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next_run_time_ += delay;
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delay -= lost_time;
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delay = std::max(delay, TimeDelta::Zero());
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task_queue_->PostDelayedTaskWithPrecision(precision_, absl::WrapUnique(this),
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delay.ms());
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// Return false to tell the TaskQueue to not destruct this object since we
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// have taken ownership with absl::WrapUnique.
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return false;
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}
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} // namespace webrtc_repeating_task_impl
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void RepeatingTaskHandle::Stop() {
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if (repeating_task_) {
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repeating_task_->SetNotAlive();
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repeating_task_ = nullptr;
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}
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}
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bool RepeatingTaskHandle::Running() const {
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return repeating_task_ != nullptr;
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}
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namespace webrtc_repeating_task_impl {
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// These methods are empty, but can be externally equipped with actions using
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// dtrace.
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void RepeatingTaskHandleDTraceProbeStart() {}
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void RepeatingTaskHandleDTraceProbeDelayedStart() {}
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void RepeatingTaskImplDTraceProbeRun() {}
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} // namespace webrtc_repeating_task_impl
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} // namespace webrtc
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