Avoid excessive heap memory reallocation when generating EMF

metarecords in memory.

Avoid excessive heap memory reallocation when generating EMF
a7bbf47f · Dave Belanger · Alexandre Julliard · c93c27f4 · a7bbf47f
Commit a7bbf47f authored Oct 08, 2003 by Dave Belanger Committed by Alexandre Julliard Oct 08, 2003
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init.c dlls/gdi/enhmfdrv/init.c +5 -1

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--- a/dlls/gdi/enhmfdrv/init.c
+++ b/dlls/gdi/enhmfdrv/init.c
@@ -185,10 +185,14 @@ BOOL EMFDRV_WriteRecord( PHYSDEV dev, EMR *emr )
 	if (!WriteFile(physDev->hFile, (char *)emr, emr->nSize, NULL, NULL))
 	    return FALSE;
    } else {
+        DWORD nEmfSize = HeapSize(GetProcessHeap(), 0, physDev->emh);
        len = physDev->emh->nBytes;
-	emh = HeapReAlloc( GetProcessHeap(), 0, physDev->emh, len );
+        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);
    }