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Avoid excessive heap memory reallocation when generating EMF 

metarecords in memory.
This commit is contained in:
Dave Belanger 2003-10-08 22:33:35 +00:00 committed by Alexandre Julliard
parent c93c27f420
commit a7bbf47f1b
1 changed files with 10 additions and 6 deletions
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16
dlls/gdi/enhmfdrv/init.c
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@ -185,12 +185,16 @@ BOOL EMFDRV_WriteRecord( PHYSDEV dev, EMR *emr )
if (!WriteFile(physDev->hFile, (char *)emr, emr->nSize, NULL, NULL))
return FALSE;
} else {
len = physDev->emh->nBytes;
emh = HeapReAlloc( GetProcessHeap(), 0, physDev->emh, len );
if (!emh) return FALSE;
physDev->emh = emh;
memcpy((CHAR *)physDev->emh + physDev->emh->nBytes - emr->nSize, emr,
emr->nSize);
DWORD nEmfSize = HeapSize(GetProcessHeap(), 0, physDev->emh);
len = physDev->emh->nBytes;
if (len > nEmfSize) {
nEmfSize += (nEmfSize / 2) + emr->nSize;
emh = HeapReAlloc(GetProcessHeap(), 0, physDev->emh, nEmfSize);
if (!emh) return FALSE;
physDev->emh = emh;
}
memcpy((CHAR *)physDev->emh + physDev->emh->nBytes - emr->nSize, emr,
emr->nSize);
}
return TRUE;
}