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CnC_Renegade/Code/Tools/wlib/critsec.h

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/*
** Command & Conquer Renegade(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CRITSEC_HEADER
#define CRITSEC_HEADER
#include "wstypes.h"
#ifdef _WIN32
#include <windows.h>
#include <winbase.h>
#elif defined(_UNIX)
#include <pthread.h>
#include <errno.h>
#endif
// Windows headers have a tendency to redefine IN
#ifdef IN
#undef IN
#endif
#define IN const
//
// Critical Section built either on a POSIX Mutex, or a Win32 Critical Section
//
// POSIX version is done by keeping a thread_id and a reference count. Win32 version
// just calls the built in functions.
//
class CritSec
{
public:
CritSec();
~CritSec();
sint32 lock(int *refcount=NULL) RO;
sint32 unlock(void) RO;
protected:
#ifdef _WIN32
mutable CRITICAL_SECTION CritSec_;
#else
mutable pthread_mutex_t Mutex_; // Mutex lock
mutable pthread_t ThreadId_; // Owner of mutex
mutable int RefCount_; // Reference count
#endif
};
#endif