- Main Page
- Related Pages
- Classes
- Files

# cpl_multiproc.h

    00001 /**********************************************************************
    00002  * $Id: cpl_multiproc.h 23728 2012-01-08 01:10:39Z rouault $
    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 #ifndef _CPL_MULTIPROC_H_INCLUDED_
    00031 #define _CPL_MULTIPROC_H_INCLUDED_
    00032
    00033 #include "cpl_port.h"
    00034
    00035 /*
    00036 ** There are three primary implementations of the multi-process support
    00037 ** controlled by one of CPL_MULTIPROC_WIN32, CPL_MULTIPROC_PTHREAD or
    00038 ** CPL_MULTIPROC_STUB being defined.  If none are defined, the stub
    00039 ** implementation will be used.
    00040 */
    00041
    00042 #if defined(WIN32) && !defined(CPL_MULTIPROC_STUB)
    00043 #  define CPL_MULTIPROC_WIN32
    00044 /* MinGW can have pthread support, so disable it to avoid issues */
    00045 /* in cpl_multiproc.cpp */
    00046 #  undef  CPL_MULTIPROC_PTHREAD
    00047 #endif
    00048
    00049 #if !defined(CPL_MULTIPROC_WIN32) && !defined(CPL_MULTIPROC_PTHREAD) \
    00050  && !defined(CPL_MULTIPROC_STUB) && !defined(CPL_MULTIPROC_NONE)
    00051 #  define CPL_MULTIPROC_STUB
    00052 #endif
    00053
    00054 CPL_C_START
    00055
    00056 typedef void (*CPLThreadFunc)(void *);
    00057
    00058 void CPL_DLL *CPLLockFile( const char *pszPath, double dfWaitInSeconds );
    00059 void  CPL_DLL CPLUnlockFile( void *hLock );
    00060
    00061 void CPL_DLL *CPLCreateMutex();
    00062 int   CPL_DLL CPLCreateOrAcquireMutex( void **, double dfWaitInSeconds );
    00063 int   CPL_DLL CPLAcquireMutex( void *hMutex, double dfWaitInSeconds );
    00064 void  CPL_DLL CPLReleaseMutex( void *hMutex );
    00065 void  CPL_DLL CPLDestroyMutex( void *hMutex );
    00066
    00067 GIntBig CPL_DLL CPLGetPID();
    00068 int   CPL_DLL CPLCreateThread( CPLThreadFunc pfnMain, void *pArg );
    00069 void  CPL_DLL CPLSleep( double dfWaitInSeconds );
    00070
    00071 const char CPL_DLL *CPLGetThreadingModel();
    00072
    00073 CPL_C_END
    00074
    00075 #ifdef __cplusplus
    00076
    00077 #define CPLMutexHolderD(x)  CPLMutexHolder oHolder(x,1000.0,__FILE__,__LINE__);
    00078
    00079 class CPL_DLL CPLMutexHolder
    00080 {
    00081   private:
    00082     void       *hMutex;
    00083     const char *pszFile;
    00084     int         nLine;
    00085
    00086   public:
    00087
    00088     CPLMutexHolder( void **phMutex, double dfWaitInSeconds = 1000.0,
    00089                     const char *pszFile = __FILE__,
    00090                     int nLine = __LINE__ );
    00091     ~CPLMutexHolder();
    00092 };
    00093 #endif /* def __cplusplus */
    00094
    00095 /* -------------------------------------------------------------------- */
    00096 /*      Thread local storage.                                           */
    00097 /* -------------------------------------------------------------------- */
    00098
    00099 #define CTLS_RLBUFFERINFO               1         /* cpl_conv.cpp */
    00100 #define CTLS_DECDMSBUFFER               2         /* cpl_conv.cpp */
    00101 #define CTLS_CSVTABLEPTR                3         /* cpl_csv.cpp */
    00102 #define CTLS_CSVDEFAULTFILENAME         4         /* cpl_csv.cpp */
    00103 #define CTLS_ERRORCONTEXT               5         /* cpl_error.cpp */
    00104 #define CTLS_UNUSED1                    6
    00105 #define CTLS_PATHBUF                    7         /* cpl_path.cpp */
    00106 #define CTLS_SPRINTFBUF                 8         /* cpl_string.cpp */
    00107 #define CTLS_SWQ_ERRBUF                 9         /* swq.c */
    00108 #define CTLS_CPLSPRINTF                10         /* cpl_string.h */
    00109 #define CTLS_RESPONSIBLEPID            11         /* gdaldataset.cpp */
    00110 #define CTLS_VERSIONINFO               12         /* gdal_misc.cpp */
    00111 #define CTLS_VERSIONINFO_LICENCE       13         /* gdal_misc.cpp */
    00112 #define CTLS_CONFIGOPTIONS             14         /* cpl_conv.cpp */
    00113 #define CTLS_FINDFILE                  15         /* cpl_findfile.cpp */
    00114
    00115 #define CTLS_MAX                       32
    00116
    00117 CPL_C_START
    00118 void CPL_DLL * CPLGetTLS( int nIndex );
    00119 void CPL_DLL CPLSetTLS( int nIndex, void *pData, int bFreeOnExit );
    00120
    00121 /* Warning : the CPLTLSFreeFunc must not in any case directly or indirectly */
    00122 /* use or fetch any TLS data, or a terminating thread will hang ! */
    00123 typedef void (*CPLTLSFreeFunc)( void* pData );
    00124 void CPL_DLL CPLSetTLSWithFreeFunc( int nIndex, void *pData, CPLTLSFreeFunc pfnFree );
    00125
    00126 void CPL_DLL CPLCleanupTLS();
    00127 CPL_C_END
    00128
    00129 #endif /* _CPL_MULTIPROC_H_INCLUDED_ */

Generated for GDAL by 1.5.6.