jk_mt.h

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/* ========================================================================= *
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 *                 The Apache Software License,  Version 1.1                 *
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 *          Copyright (c) 1999-2001 The Apache Software Foundation.          *
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 * ========================================================================= *
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 * Redistribution and use in source and binary forms,  with or without modi- *
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 * 1. Redistributions of source code  must retain the above copyright notice *
 *    notice, this list of conditions and the following disclaimer.          *
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 * 2. Redistributions  in binary  form  must  reproduce the  above copyright *
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 *    must include the following acknowlegement:                             *
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 *        Foundation <http://www.apache.org/>."                              *
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 * 4. The names  "The  Jakarta  Project",  "Jk",  and  "Apache  Software     *
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 *    permission, please contact <[e-mail]>.                        *
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/***************************************************************************
 * Description: Multi thread portability code for JK                       *
 * Author:      Gal Shachor <[e-mail]>                           *
 * Version:     $Revision: 1.3 $                                           *
 ***************************************************************************/

#ifndef _JK_MT_H
#define _JK_MT_H

#include "jk_global.h"

/*
 * All WIN32 code is MT, UNIX code that uses pthreads is marked by the POSIX 
 * _REENTRANT define.
 */
#if defined (WIN32) || defined(_REENTRANT)

    /*
     * Marks execution under MT compilation
     */
    #define _MT_CODE

    #ifdef WIN32

        #include <windows.h>

        typedef CRITICAL_SECTION JK_CRIT_SEC;

        #define JK_INIT_CS(x, rc) InitializeCriticalSection(x); rc = JK_TRUE;
        #define JK_DELETE_CS(x, rc) DeleteCriticalSection(x); rc = JK_TRUE;
        #define JK_ENTER_CS(x, rc) EnterCriticalSection(x); rc = JK_TRUE;
        #define JK_LEAVE_CS(x, rc) LeaveCriticalSection(x); rc = JK_TRUE;

    #else /* Unix pthreads */

        #include <pthread.h>

        typedef pthread_mutex_t	JK_CRIT_SEC;

        #define JK_INIT_CS(x, rc)\
            if(pthread_mutex_init(x, NULL)) rc = JK_FALSE; else rc = JK_TRUE; 

        #define JK_DELETE_CS(x, rc)\
            if(pthread_mutex_destroy(x)) rc = JK_FALSE; else rc = JK_TRUE; 

        #define JK_ENTER_CS(x, rc)\
            if(pthread_mutex_lock(x)) rc = JK_FALSE; else rc = JK_TRUE; 

        #define JK_LEAVE_CS(x, rc)\
            if(pthread_mutex_unlock(x)) rc = JK_FALSE; else rc = JK_TRUE; 
    #endif /* Unix pthreads */

#else /* Not an MT code */

    typedef void *JK_CRIT_SEC;

    #define JK_INIT_CS(x, rc) rc = JK_TRUE;
    #define JK_DELETE_CS(x, rc) rc = JK_TRUE;
    #define JK_ENTER_CS(x, rc) rc = JK_TRUE;
    #define JK_LEAVE_CS(x, rc) rc = JK_TRUE;

#endif /* Not an MT code */

#endif /* _JK_MT_H */