49 lines
737 B
C++
49 lines
737 B
C++
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// Copyright (c) 2011, NetEase Inc. All rights reserved.
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//
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// Author: rl
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// Date: 2011/6/9
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//
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// Lock implemetation on windows
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#include "lock.h"
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#if defined(OS_WIN)
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namespace nbase
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{
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NLock::NLock()
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{
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// The second parameter is the spin count, for short-held locks it avoid the
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// contending thread from going to sleep which helps performance greatly.
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::InitializeCriticalSectionAndSpinCount(&os_lock_, 2000);
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}
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NLock::~NLock()
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{
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::DeleteCriticalSection(&os_lock_);
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}
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bool NLock::Try()
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{
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if (::TryEnterCriticalSection(&os_lock_))
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{
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return true;
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}
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return false;
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}
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void NLock::Lock()
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{
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::EnterCriticalSection(&os_lock_);
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}
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void NLock::Unlock()
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{
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::LeaveCriticalSection(&os_lock_);
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}
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} // namespace
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#endif // OS_WIN
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