Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
95 lines
1.9 KiB
C++
95 lines
1.9 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#ifndef CRYINCLUDE_CRYCOMMON_SYNCHRONIZATION_H
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#define CRYINCLUDE_CRYCOMMON_SYNCHRONIZATION_H
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#pragma once
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//---------------------------------------------------------------------------
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// Synchronization policies, for classes (e.g. containers, allocators) that may
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// or may not be multithread-safe.
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//
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// Policies should be used as a template argument to such classes,
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// and these class implementations should then utilise the policy, as a base-class or member.
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//
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//---------------------------------------------------------------------------
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#include "MultiThread.h"
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#include "CryThread.h"
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namespace stl
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{
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template<class Sync>
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struct AutoLock
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{
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ILINE AutoLock(Sync& sync)
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: _sync(sync)
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{
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sync.Lock();
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}
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ILINE ~AutoLock()
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{
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_sync.Unlock();
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}
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private:
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Sync& _sync;
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};
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struct PSyncNone
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{
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void Lock() {}
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void Unlock() {}
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};
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struct PSyncMultiThread
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{
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PSyncMultiThread()
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: _Semaphore(0) {}
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void Lock()
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{
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CryWriteLock(&_Semaphore);
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}
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void Unlock()
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{
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CryReleaseWriteLock(&_Semaphore);
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}
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int IsLocked() const volatile
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{
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return _Semaphore;
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}
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private:
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volatile int _Semaphore;
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};
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#ifdef _DEBUG
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struct PSyncDebug
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: public PSyncMultiThread
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{
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void Lock()
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{
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assert(!IsLocked());
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PSyncMultiThread::Lock();
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}
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};
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#else
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typedef PSyncNone PSyncDebug;
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#endif
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};
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#endif // CRYINCLUDE_CRYCOMMON_SYNCHRONIZATION_H
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