mirror of
https://github.com/moparisthebest/minetest
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80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/*
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This file is a part of the JThread package, which contains some object-
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oriented thread wrappers for different thread implementations.
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Copyright (c) 2000-2006 Jori Liesenborgs (jori.liesenborgs@gmail.com)
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#ifndef JMUTEX_H
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#define JMUTEX_H
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#if (defined(WIN32) || defined(_WIN32_WCE))
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#ifndef _WIN32_WINNT
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#define _WIN32_WINNT 0x0501
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#endif
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#ifndef _WIN32_WCE
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#include <process.h>
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#endif // _WIN32_WCE
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#include <winsock2.h>
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#include <windows.h>
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// CriticalSection is way faster than the alternative
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#define JMUTEX_CRITICALSECTION
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#else // using pthread
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#include <pthread.h>
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#endif // WIN32
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#define ERR_JMUTEX_ALREADYINIT -1
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#define ERR_JMUTEX_NOTINIT -2
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#define ERR_JMUTEX_CANTCREATEMUTEX -3
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class JMutex
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{
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public:
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JMutex();
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~JMutex();
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int Lock();
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int Unlock();
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private:
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#if (defined(WIN32) || defined(_WIN32_WCE))
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#ifdef JMUTEX_CRITICALSECTION
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CRITICAL_SECTION mutex;
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#else // Use standard mutex
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HANDLE mutex;
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#endif // JMUTEX_CRITICALSECTION
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#else // pthread mutex
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pthread_mutex_t mutex;
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bool IsLocked() {
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if (pthread_mutex_trylock(&mutex)) {
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pthread_mutex_unlock(&mutex);
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return true;
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}
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return false;
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}
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#endif // WIN32
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};
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#endif // JMUTEX_H
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