mirror of
https://github.com/danog/libtgvoip.git
synced 2024-12-11 16:49:52 +01:00
5caaaafa42
I'm now using the entire audio processing module from WebRTC as opposed to individual DSP algorithms pulled from there before. Seems to work better this way.
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
/*
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* Copyright (c) 2016 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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#ifndef RTC_BASE_RACE_CHECKER_H_
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#define RTC_BASE_RACE_CHECKER_H_
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#include "rtc_base/checks.h"
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#include "rtc_base/platform_thread_types.h"
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#include "rtc_base/thread_annotations.h"
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namespace rtc {
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namespace internal {
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class RaceCheckerScope;
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} // namespace internal
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// Best-effort race-checking implementation. This primitive uses no
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// synchronization at all to be as-fast-as-possible in the non-racy case.
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class RTC_LOCKABLE RaceChecker {
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public:
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friend class internal::RaceCheckerScope;
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RaceChecker();
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private:
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bool Acquire() const RTC_EXCLUSIVE_LOCK_FUNCTION();
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void Release() const RTC_UNLOCK_FUNCTION();
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// Volatile to prevent code being optimized away in Acquire()/Release().
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mutable volatile int access_count_ = 0;
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mutable volatile PlatformThreadRef accessing_thread_;
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};
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namespace internal {
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class RTC_SCOPED_LOCKABLE RaceCheckerScope {
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public:
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explicit RaceCheckerScope(const RaceChecker* race_checker)
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RTC_EXCLUSIVE_LOCK_FUNCTION(race_checker);
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bool RaceDetected() const;
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~RaceCheckerScope() RTC_UNLOCK_FUNCTION();
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private:
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const RaceChecker* const race_checker_;
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const bool race_check_ok_;
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};
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class RTC_SCOPED_LOCKABLE RaceCheckerScopeDoNothing {
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public:
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explicit RaceCheckerScopeDoNothing(const RaceChecker* race_checker)
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RTC_EXCLUSIVE_LOCK_FUNCTION(race_checker) {}
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~RaceCheckerScopeDoNothing() RTC_UNLOCK_FUNCTION() {}
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};
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} // namespace internal
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} // namespace rtc
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#define RTC_CHECK_RUNS_SERIALIZED(x) \
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rtc::internal::RaceCheckerScope race_checker(x); \
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RTC_CHECK(!race_checker.RaceDetected())
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#if RTC_DCHECK_IS_ON
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#define RTC_DCHECK_RUNS_SERIALIZED(x) \
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rtc::internal::RaceCheckerScope race_checker(x); \
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RTC_DCHECK(!race_checker.RaceDetected())
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#else
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#define RTC_DCHECK_RUNS_SERIALIZED(x) \
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rtc::internal::RaceCheckerScopeDoNothing race_checker(x)
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#endif
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#endif // RTC_BASE_RACE_CHECKER_H_
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