GDAL
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00001 /********************************************************************** 00002 * $Id: cpl_multiproc.h 17143 2009-05-28 18:26:05Z 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 #endif 00045 00046 #if !defined(CPL_MULTIPROC_WIN32) && !defined(CPL_MULTIPROC_PTHREAD) \ 00047 && !defined(CPL_MULTIPROC_STUB) && !defined(CPL_MULTIPROC_NONE) 00048 # define CPL_MULTIPROC_STUB 00049 #endif 00050 00051 CPL_C_START 00052 00053 typedef void (*CPLThreadFunc)(void *); 00054 00055 void CPL_DLL *CPLLockFile( const char *pszPath, double dfWaitInSeconds ); 00056 void CPL_DLL CPLUnlockFile( void *hLock ); 00057 00058 void CPL_DLL *CPLCreateMutex(); 00059 int CPL_DLL CPLCreateOrAcquireMutex( void **, double dfWaitInSeconds ); 00060 int CPL_DLL CPLAcquireMutex( void *hMutex, double dfWaitInSeconds ); 00061 void CPL_DLL CPLReleaseMutex( void *hMutex ); 00062 void CPL_DLL CPLDestroyMutex( void *hMutex ); 00063 00064 GIntBig CPL_DLL CPLGetPID(); 00065 int CPL_DLL CPLCreateThread( CPLThreadFunc pfnMain, void *pArg ); 00066 void CPL_DLL CPLSleep( double dfWaitInSeconds ); 00067 00068 const char CPL_DLL *CPLGetThreadingModel(); 00069 00070 CPL_C_END 00071 00072 #ifdef __cplusplus 00073 00074 #define CPLMutexHolderD(x) CPLMutexHolder oHolder(x,1000.0,__FILE__,__LINE__); 00075 00076 class CPL_DLL CPLMutexHolder 00077 { 00078 private: 00079 void *hMutex; 00080 const char *pszFile; 00081 int nLine; 00082 00083 public: 00084 00085 CPLMutexHolder( void **phMutex, double dfWaitInSeconds = 1000.0, 00086 const char *pszFile = __FILE__, 00087 int nLine = __LINE__ ); 00088 ~CPLMutexHolder(); 00089 }; 00090 #endif /* def __cplusplus */ 00091 00092 /* -------------------------------------------------------------------- */ 00093 /* Thread local storage. */ 00094 /* -------------------------------------------------------------------- */ 00095 00096 #define CTLS_RLBUFFERINFO 1 /* cpl_conv.cpp */ 00097 #define CTLS_DECDMSBUFFER 2 /* cpl_conv.cpp */ 00098 #define CTLS_CSVTABLEPTR 3 /* cpl_csv.cpp */ 00099 #define CTLS_CSVDEFAULTFILENAME 4 /* cpl_csv.cpp */ 00100 #define CTLS_ERRORCONTEXT 5 /* cpl_error.cpp */ 00101 #define CTLS_FINDERINFO 6 /* cpl_finder.cpp */ 00102 #define CTLS_PATHBUF 7 /* cpl_path.cpp */ 00103 #define CTLS_SPRINTFBUF 8 /* cpl_string.cpp */ 00104 #define CTLS_SWQ_ERRBUF 9 /* swq.c */ 00105 #define CTLS_CPLSPRINTF 10 /* cpl_string.h */ 00106 #define CTLS_RESPONSIBLEPID 11 /* gdaldataset.cpp */ 00107 #define CTLS_VERSIONINFO 12 /* gdal_misc.cpp */ 00108 #define CTLS_VERSIONINFO_LICENCE 13 /* gdal_misc.cpp */ 00109 #define CTLS_CONFIGOPTIONS 14 /* cpl_conv.cpp */ 00110 #define CTLS_FINDFILE 15 /* cpl_findfile.cpp */ 00111 00112 #define CTLS_MAX 32 00113 00114 CPL_C_START 00115 void CPL_DLL * CPLGetTLS( int nIndex ); 00116 void CPL_DLL CPLSetTLS( int nIndex, void *pData, int bFreeOnExit ); 00117 void CPL_DLL CPLCleanupTLS(); 00118 CPL_C_END 00119 00120 #endif /* _CPL_MULTIPROC_H_INCLUDED_ */