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86ee89f73e
On a 32bit system, this reduces the allocation size of the flag down from 12 bytes to 8, and removes the need for a vtable (the extra 4 bytes are the vtable pointer). The downside is that this change makes the binary layout of the flag, less compatible with RefCountedObject<> based reference counting objects and thus we don't immediately get the benefits of identical COMDAT folding and subsequently there's a slight binary size increase. With wider use, the binary size benefits will come. Bug: none Change-Id: I04129771790a3258d6accaf0ab1258b7a798a55e Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215681 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33793}
51 lines
1.4 KiB
C++
51 lines
1.4 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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namespace webrtc {
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// static
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rtc::scoped_refptr<PendingTaskSafetyFlag> PendingTaskSafetyFlag::Create() {
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return new 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 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 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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