Jamie Reece Wilson
a454a2d71e
[*] Reverted a change for UNIX: always never-spin acquire under observational lock [*] Decreased common case of syscall operations under Linux and UNIX [*] Unix signaling: prevent waits while during condvar wake up by unlocking before the signal [*] NT no wait: semaphores must not spin under lock
34 lines
855 B
C++
34 lines
855 B
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuSemaphore.Unix.hpp
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Date: 2021-6-12
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Author: Reece
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***/
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#pragma once
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#include "AuConditionMutex.Unix.hpp"
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namespace Aurora::Threading::Primitives
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{
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struct SemaphoreImpl : ISemaphore
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{
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SemaphoreImpl(long intialValue = 0);
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~SemaphoreImpl();
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bool HasOSHandle(AuMach &mach) override;
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bool HasLockImplementation() override;
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auline bool TryLockNoSpin();
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bool TryLock() override;
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bool LockMS(AuUInt64 timeout) override;
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bool LockNS(AuUInt64 timeout) override;
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void Lock() override;
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void Unlock(long count) override;
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void Unlock() override;
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private:
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AuInt32 value_ {};
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pthread_cond_t pthreadCv_ {};
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UnixConditionMutex mutex_;
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};
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} |