25e735239c
This is useful in cases where a class needs to use a flag for controlling operations on a task queue but initialization needs to complete before tasks are allowed to run. Example CL that needs this (for MediaChannel): https://webrtc-review.googlesource.com/c/src/+/215405 Bug: webrtc:11993 Change-Id: Icd7dd16ee7447647266d6de000a4db3fd0447618 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215583 Commit-Queue: Tommi <tommi@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33773}
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/*
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* Copyright 2020 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/pending_task_safety_flag.h"
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#include "rtc_base/ref_counted_object.h"
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namespace webrtc {
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// static
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rtc::scoped_refptr<PendingTaskSafetyFlag> PendingTaskSafetyFlag::Create() {
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return new rtc::RefCountedObject<PendingTaskSafetyFlag>(true);
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}
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rtc::scoped_refptr<PendingTaskSafetyFlag>
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PendingTaskSafetyFlag::CreateDetached() {
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rtc::scoped_refptr<PendingTaskSafetyFlag> safety_flag(
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new rtc::RefCountedObject<PendingTaskSafetyFlag>(true));
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safety_flag->main_sequence_.Detach();
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return safety_flag;
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}
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rtc::scoped_refptr<PendingTaskSafetyFlag>
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PendingTaskSafetyFlag::CreateDetachedInactive() {
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rtc::scoped_refptr<PendingTaskSafetyFlag> safety_flag(
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new rtc::RefCountedObject<PendingTaskSafetyFlag>(false));
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safety_flag->main_sequence_.Detach();
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return safety_flag;
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}
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void PendingTaskSafetyFlag::SetNotAlive() {
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RTC_DCHECK_RUN_ON(&main_sequence_);
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alive_ = false;
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}
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void PendingTaskSafetyFlag::SetAlive() {
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RTC_DCHECK_RUN_ON(&main_sequence_);
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alive_ = true;
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}
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bool PendingTaskSafetyFlag::alive() const {
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RTC_DCHECK_RUN_ON(&main_sequence_);
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return alive_;
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}
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} // namespace webrtc
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