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library/cpp/yt/threading/count_down_latch.h
42 строки
908 B
babenko
YT-18571: Move count_down_latch to library/cpp/yt/threading
30 май 2023, 12:09
30 май 2023, 12:09
808347b
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#pragma once #include "public.h" #ifndef _linux_ #include <util/system/condvar.h> #include <util/system/mutex.h> #endif namespace NYT::NThreading { //////////////////////////////////////////////////////////////////////////////// //! A synchronization aid that allows one or more threads to wait until //! a set of operations being performed in other threads completes. /*! * See https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CountDownLatch.html */ class TCountDownLatch final { public: explicit TCountDownLatch(int count); void CountDown(); void Wait() const; bool TryWait() const; int GetCount() const; private: std::atomic<int> Count_; #ifndef _linux_ mutable TCondVar ConditionVariable_; mutable TMutex Mutex_; #endif }; //////////////////////////////////////////////////////////////////////////////// } // namespace NYT::NThreading