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cpl_multiproc.h
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/**********************************************************************
* $Id: cpl_multiproc.h,v 1.10 2006/01/25 19:52:25 fwarmerdam Exp $
*
* Project: CPL - Common Portability Library
* Purpose: CPL Multi-Threading, and process handling portability functions.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
**********************************************************************
* Copyright (c) 2002, Frank Warmerdam
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
**********************************************************************
*
* $Log: cpl_multiproc.h,v $
* Revision 1.10 2006/01/25 19:52:25 fwarmerdam
* default to avoiding as much mutex overhead as opposed if MUTEX_NONE defined
*
* Revision 1.9 2005/08/24 22:19:27 fwarmerdam
* added CPLCleanupTLS
*
* Revision 1.8 2005/07/08 18:17:52 fwarmerdam
* complete TLS implementation for win32
*
* Revision 1.7 2005/07/08 14:35:26 fwarmerdam
* preliminary TLS support
*
* Revision 1.6 2005/05/23 06:39:49 fwarmerdam
* added CPLMutexHolder stuff
*
* Revision 1.5 2005/05/20 19:19:00 fwarmerdam
* added CPLCreateOrAcquireMutex()
*
* Revision 1.4 2005/04/26 20:52:10 fwarmerdam
* use a typedef type for thread mains (for Sun port)
*
* Revision 1.3 2003/04/23 04:36:55 warmerda
* pthreads based implementation
*
* Revision 1.2 2002/05/24 04:09:24 warmerda
* fixed CPL_DLL declarations
*
* Revision 1.1 2002/05/24 04:01:01 warmerda
* New
*
**********************************************************************/
#ifndef _CPL_MULTIPROC_H_INCLUDED_
#define _CPL_MULTIPROC_H_INCLUDED_
#include "cpl_port.h"
// There are three primary implementations of the multi-process support
// controlled by one of CPL_MULTIPROC_WIN32, CPL_MULTIPROC_PTHREAD or
// CPL_MULTIPROC_STUB being defined. If none are defined, the stub
// implementation will be used.
#if defined(WIN32) && !defined(CPL_MULTIPROC_STUB)
# define CPL_MULTIPROC_WIN32
#endif
#if !defined(CPL_MULTIPROC_WIN32) && !defined(CPL_MULTIPROC_PTHREAD) \
&& !defined(CPL_MULTIPROC_STUB) && !defined(CPL_MULTIPROC_NONE)
# define CPL_MULTIPROC_STUB
#endif
CPL_C_START
typedef void (*CPLThreadFunc)(void *);
void CPL_DLL *CPLLockFile( const char *pszPath, double dfWaitInSeconds );
void CPL_DLL CPLUnlockFile( void *hLock );
void CPL_DLL *CPLCreateMutex();
int CPL_DLL CPLCreateOrAcquireMutex( void **, double dfWaitInSeconds );
int CPL_DLL CPLAcquireMutex( void *hMutex, double dfWaitInSeconds );
void CPL_DLL CPLReleaseMutex( void *hMutex );
void CPL_DLL CPLDestroyMutex( void *hMutex );
int CPL_DLL CPLGetPID();
int CPL_DLL CPLCreateThread( CPLThreadFunc pfnMain, void *pArg );
void CPL_DLL CPLSleep( double dfWaitInSeconds );
const char CPL_DLL *CPLGetThreadingModel();
CPL_C_END
#ifdef __cplusplus
#define CPLMutexHolderD(x) CPLMutexHolder oHolder(x,1000.0,__FILE__,__LINE__);
class CPLMutexHolder
{
private:
void *hMutex;
const char *pszFile;
int nLine;
public:
CPLMutexHolder( void **phMutex, double dfWaitInSeconds = 1000.0,
const char *pszFile = __FILE__,
int nLine = __LINE__ );
~CPLMutexHolder();
};
#endif /* def __cplusplus */
/* -------------------------------------------------------------------- */
/* Thread local storage. */
/* -------------------------------------------------------------------- */
#define CTLS_RLBUFFERINFO 1 /* cpl_conv.cpp */
#define CTLS_DECDMSBUFFER 2 /* cpl_conv.cpp */
#define CTLS_CSVTABLEPTR 3 /* cpl_csv.cpp */
#define CTLS_CSVDEFAULTFILENAME 4 /* cpl_csv.cpp */
#define CTLS_ERRORCONTEXT 5 /* cpl_error.cpp */
#define CTLS_FINDERINFO 6 /* cpl_finder.cpp */
#define CTLS_PATHBUF 7 /* cpl_path.cpp */
#define CTLS_SPRINTFBUF 8 /* cpl_string.cpp */
#define CTLS_MAX 32
CPL_C_START
void CPL_DLL * CPLGetTLS( int nIndex );
void CPL_DLL CPLSetTLS( int nIndex, void *pData, int bFreeOnExit );
void CPL_DLL CPLCleanupTLS();
CPL_C_END
#endif /* _CPL_MULTIPROC_H_INCLUDED_ */