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# cpl_multiproc.h

    00001 /**********************************************************************
    00002  * $Id: cpl_multiproc_h-source.html,v 1.3 2002/12/21 19:13:12 warmerda Exp $
    00003  *
    00004  * Project:  CPL - Common Portability Library
    00005  * Purpose:  CPL Multi-Threading, and process handling portability functions.
    00006  * Author:   Frank Warmerdam, warmerdam@pobox.com
    00007  *
    00008  **********************************************************************
    00009  * Copyright (c) 2002, Frank Warmerdam
    00010  *
    00011  * Permission is hereby granted, free of charge, to any person obtaining a
    00012  * copy of this software and associated documentation files (the "Software"),
    00013  * to deal in the Software without restriction, including without limitation
    00014  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00015  * and/or sell copies of the Software, and to permit persons to whom the
    00016  * Software is furnished to do so, subject to the following conditions:
    00017  *
    00018  * The above copyright notice and this permission notice shall be included
    00019  * in all copies or substantial portions of the Software.
    00020  *
    00021  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00022  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00023  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
    00024  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00025  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    00026  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    00027  * DEALINGS IN THE SOFTWARE.
    00028  **********************************************************************
    00029  *
    00030  * $Log: cpl_multiproc_h-source.html,v $
    00030  * Revision 1.3  2002/12/21 19:13:12  warmerda
    00030  * updated
    00030  *
    00031  * Revision 1.2  2002/05/24 04:09:24  warmerda
    00032  * fixed CPL_DLL declarations
    00033  *
    00034  * Revision 1.1  2002/05/24 04:01:01  warmerda
    00035  * New
    00036  *
    00037  **********************************************************************/
    00038
    00039 #ifndef _CPL_MULTIPROC_H_INCLUDED_
    00040 #define _CPL_MULTIPROC_H_INCLUDED_
    00041
    00042 #include "cpl_port.h"
    00043
    00044 // There are three primary implementations of the multi-process support
    00045 // controlled by one of CPL_MULTIPROC_WIN32, CPL_MULTIPROC_PTHREAD or
    00046 // CPL_MULTIPROC_STUB being defined.  If none are defined, the stub
    00047 // implementation will be used.
    00048
    00049 #if defined(WIN32) && !defined(CPL_MULTIPROC_STUB)
    00050 #  define CPL_MULTIPROC_WIN32
    00051 #endif
    00052
    00053 #if !defined(CPL_MULTIPROC_WIN32) && !defined(CPL_MULTIPROC_PTHREAD) \
    00054  && !defined(CPL_MULTIPROC_STUB)
    00055 #  define CPL_MULTIPROC_STUB
    00056 #endif
    00057
    00058 CPL_C_START
    00059
    00060 void CPL_DLL *CPLLockFile( const char *pszPath, double dfWaitInSeconds );
    00061 void  CPL_DLL CPLUnlockFile( void *hLock );
    00062
    00063 void CPL_DLL *CPLCreateMutex();
    00064 int   CPL_DLL CPLAcquireMutex( void *hMutex, double dfWaitInSeconds );
    00065 void  CPL_DLL CPLReleaseMutex( void *hMutex );
    00066 void  CPL_DLL CPLDestroyMutex( void *hMutex );
    00067
    00068 int   CPL_DLL CPLGetPID();
    00069 int   CPL_DLL CPLCreateThread( void (*pfnMain)(void *), void *pArg );
    00070 void  CPL_DLL CPLSleep( double dfWaitInSeconds );
    00071
    00072 CPL_C_END
    00073
    00074 #endif /* _CPL_MULTIPROC_H_INCLUDED_ */