From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- third_party/libwebrtc/rtc_base/one_time_event.h | 60 +++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 third_party/libwebrtc/rtc_base/one_time_event.h (limited to 'third_party/libwebrtc/rtc_base/one_time_event.h') diff --git a/third_party/libwebrtc/rtc_base/one_time_event.h b/third_party/libwebrtc/rtc_base/one_time_event.h new file mode 100644 index 0000000000..d33ddbd587 --- /dev/null +++ b/third_party/libwebrtc/rtc_base/one_time_event.h @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef RTC_BASE_ONE_TIME_EVENT_H_ +#define RTC_BASE_ONE_TIME_EVENT_H_ + +#include "rtc_base/synchronization/mutex.h" + +namespace webrtc { +// Provides a simple way to perform an operation (such as logging) one +// time in a certain scope. +// Example: +// OneTimeEvent firstFrame; +// ... +// if (firstFrame()) { +// RTC_LOG(LS_INFO) << "This is the first frame". +// } +class OneTimeEvent { + public: + OneTimeEvent() {} + bool operator()() { + MutexLock lock(&mutex_); + if (happened_) { + return false; + } + happened_ = true; + return true; + } + + private: + bool happened_ = false; + Mutex mutex_; +}; + +// A non-thread-safe, ligher-weight version of the OneTimeEvent class. +class ThreadUnsafeOneTimeEvent { + public: + ThreadUnsafeOneTimeEvent() {} + bool operator()() { + if (happened_) { + return false; + } + happened_ = true; + return true; + } + + private: + bool happened_ = false; +}; + +} // namespace webrtc + +#endif // RTC_BASE_ONE_TIME_EVENT_H_ -- cgit v1.2.3