C++ (Cpp) UnreferenceBlockBase示例

示例#1

文件： gdalhashsetbandblockcache.cpp 项目： OSGeo/gdal

CPLErr GDALHashSetBandBlockCache::UnreferenceBlock( GDALRasterBlock* poBlock )
{
    UnreferenceBlockBase();

    CPLLockHolderOptionalLockD( hLock );
    m_oSet.erase(poBlock);
    return CE_None;
}

示例#2

文件： gdalarraybandblockcache.cpp 项目： rashadkm/lib_gdal

CPLErr GDALArrayBandBlockCache::UnreferenceBlock( GDALRasterBlock* poBlock )
{
    int nXBlockOff = poBlock->GetXOff();
    int nYBlockOff = poBlock->GetYOff();

    UnreferenceBlockBase();

/* -------------------------------------------------------------------- */
/*      Simple case for single level caches.                            */
/* -------------------------------------------------------------------- */
    if( !bSubBlockingActive )
    {
        int nBlockIndex = nXBlockOff + nYBlockOff * poBand->nBlocksPerRow;

        u.papoBlocks[nBlockIndex] = NULL;
    }

/* -------------------------------------------------------------------- */
/*      Identify our subblock.                                          */
/* -------------------------------------------------------------------- */
    else
    {
        int nSubBlock = TO_SUBBLOCK(nXBlockOff) 
            + TO_SUBBLOCK(nYBlockOff) * nSubBlocksPerRow;

/* -------------------------------------------------------------------- */
/*      Check within subblock.                                          */
/* -------------------------------------------------------------------- */
        GDALRasterBlock **papoSubBlockGrid = u.papapoBlocks[nSubBlock];
        if( papoSubBlockGrid == NULL )
            return CE_None;

        int nBlockInSubBlock = WITHIN_SUBBLOCK(nXBlockOff)
            + WITHIN_SUBBLOCK(nYBlockOff) * SUBBLOCK_SIZE;

        papoSubBlockGrid[nBlockInSubBlock] = NULL;
    }

    return CE_None;
}