VSIFileManager *VSIFileManager::Get()
{
static volatile GPtrDiff_t nConstructerPID = 0;
if( poManager != NULL )
{
if( nConstructerPID != 0 )
{
GPtrDiff_t nCurrentPID = static_cast<GPtrDiff_t>(CPLGetPID());
if( nConstructerPID != nCurrentPID )
{
{
CPLMutexHolder oHolder( &hVSIFileManagerMutex );
}
if ( nConstructerPID != 0 )
{
VSIDebug1( "nConstructerPID != 0: %d", nConstructerPID);
assert(false);
}
}
}
return poManager;
}
CPLMutexHolder oHolder2( &hVSIFileManagerMutex );
if( poManager == NULL )
{
nConstructerPID = static_cast<GPtrDiff_t>(CPLGetPID());
#ifdef DEBUG_VERBOSE
printf("Thread %d: VSIFileManager in construction\n", nConstructerPID);
#endif
poManager = new VSIFileManager;
VSIInstallLargeFileHandler();
VSIInstallSubFileHandler();
VSIInstallMemFileHandler();
#ifdef HAVE_LIBZ
VSIInstallGZipFileHandler();
VSIInstallZipFileHandler();
#endif
#ifdef HAVE_CURL
VSIInstallCurlFileHandler();
VSIInstallCurlStreamingFileHandler();
VSIInstallS3FileHandler();
VSIInstallS3StreamingFileHandler();
#endif
VSIInstallStdinHandler();
VSIInstallStdoutHandler();
VSIInstallSparseFileHandler();
VSIInstallTarFileHandler();
VSIInstallCryptFileHandler();
//printf("Thread %d: VSIFileManager construction finished\n", nConstructerPID);
nConstructerPID = 0;
}
return poManager;
}
VSIFileManager *VSIFileManager::Get()
{
static volatile int nConstructerPID = 0;
if( poManager != NULL )
{
if( nConstructerPID != 0 )
{
int nCurrentPID = (int)CPLGetPID();
if( nConstructerPID != nCurrentPID )
{
//printf("Thread %d: Waiting for VSIFileManager to be finished by other thread.\n", nCurrentPID);
{
CPLMutexHolder oHolder( &hVSIFileManagerMutex );
}
//printf("Thread %d: End of wait for VSIFileManager construction to be finished\n", nCurrentPID);
CPLAssert(nConstructerPID == 0);
}
}
return poManager;
}
CPLMutexHolder oHolder2( &hVSIFileManagerMutex );
if( poManager == NULL )
{
nConstructerPID = (int)CPLGetPID();
//printf("Thread %d: VSIFileManager in construction\n", nConstructerPID);
poManager = new VSIFileManager;
VSIInstallLargeFileHandler();
VSIInstallSubFileHandler();
VSIInstallMemFileHandler();
#ifdef HAVE_LIBZ
VSIInstallGZipFileHandler();
VSIInstallZipFileHandler();
#endif
#ifdef HAVE_CURL
VSIInstallCurlFileHandler();
VSIInstallCurlStreamingFileHandler();
#endif
VSIInstallStdinHandler();
VSIInstallStdoutHandler();
VSIInstallSparseFileHandler();
VSIInstallTarFileHandler();
//printf("Thread %d: VSIFileManager construction finished\n", nConstructerPID);
nConstructerPID = 0;
}
return poManager;
}
VSIFileManager *VSIFileManager::Get()
{
if( poManager == NULL )
{
poManager = new VSIFileManager;
VSIInstallLargeFileHandler();
VSIInstallMemFileHandler();
#ifdef HAVE_LIBZ
VSIInstallGZipFileHandler();
VSIInstallZipFileHandler();
#endif
}
return poManager;
}
VSILFILE *VSIFileFromMemBuffer( const char *pszFilename,
GByte *pabyData,
vsi_l_offset nDataLength,
int bTakeOwnership )
{
if( VSIFileManager::GetHandler("")
== VSIFileManager::GetHandler("/vsimem/") )
VSIInstallMemFileHandler();
VSIMemFilesystemHandler *poHandler = (VSIMemFilesystemHandler *)
VSIFileManager::GetHandler("/vsimem/");
if (pszFilename == NULL)
return NULL;
CPLString osFilename = pszFilename;
VSIMemFilesystemHandler::NormalizePath( osFilename );
VSIMemFile *poFile = new VSIMemFile;
poFile->osFilename = osFilename;
poFile->bOwnData = bTakeOwnership;
poFile->pabyData = pabyData;
poFile->nLength = nDataLength;
poFile->nAllocLength = nDataLength;
{
CPLMutexHolder oHolder( &poHandler->hMutex );
poHandler->Unlink(osFilename);
poHandler->oFileList[poFile->osFilename] = poFile;
poFile->nRefCount++;
}
return (VSILFILE *) poHandler->Open( osFilename, "r+" );
}
