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GlobalReAlloc16: If heap has GlobalPageLock set, try only with 

HEAP_REALLOC_IN_PLACE_ONLY flag set.
This commit is contained in:
Uwe Bonnes 2001-12-20 00:00:25 +00:00 committed by Alexandre Julliard
parent 1bd9474ee8
commit 9788815b9c
1 changed files with 19 additions and 9 deletions
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28
memory/global.c
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@ -266,7 +266,7 @@ HGLOBAL16 WINAPI GlobalReAlloc16(
) {
WORD selcount;
DWORD oldsize;
void *ptr;
void *ptr, *newptr;
GLOBALARENA *pArena, *pNewArena;
WORD sel = GlobalHandleToSel16( handle );
@ -318,19 +318,28 @@ HGLOBAL16 WINAPI GlobalReAlloc16(
ptr = (void *)pArena->base;
oldsize = pArena->size;
TRACE("oldsize %08lx\n",oldsize);
TRACE("oldbase %p oldsize %08lx newsize %08lx\n", ptr,oldsize,size);
if (ptr && (size == oldsize)) return handle; /* Nothing to do */
if (pArena->flags & GA_DOSMEM)
ptr = DOSMEM_ResizeBlock(ptr, size, NULL);
newptr = DOSMEM_ResizeBlock(ptr, size, NULL);
else
ptr = HeapReAlloc( GetProcessHeap(), 0, ptr, size );
if (!ptr)
/* if more then one reader (e.g. some pointer has been given out by GetVDMPointer32W16),
only try to realloc in place */
newptr = HeapReAlloc( GetProcessHeap(),
(pArena->pageLockCount > 0)?HEAP_REALLOC_IN_PLACE_ONLY:0, ptr, size );
if (!newptr)
{
SELECTOR_FreeBlock( sel );
memset( pArena, 0, sizeof(GLOBALARENA) );
FIXME("Realloc failed lock %d\n",pArena->pageLockCount);
if (pArena->pageLockCount <1)
{
HeapFree( GetProcessHeap(), 0, ptr );
SELECTOR_FreeBlock( sel );
memset( pArena, 0, sizeof(GLOBALARENA) );
}
return 0;
}
ptr = newptr;
/* Reallocate the selector(s) */
@ -350,9 +359,10 @@ HGLOBAL16 WINAPI GlobalReAlloc16(
return 0;
}
/* Fill the new arena block */
/* Fill the new arena block
As we may have used HEAP_REALLOC_IN_PLACE_ONLY, areas may overlap*/
if (pNewArena != pArena) memcpy( pNewArena, pArena, sizeof(GLOBALARENA) );
if (pNewArena != pArena) memmove( pNewArena, pArena, sizeof(GLOBALARENA) );
pNewArena->base = (DWORD)ptr;
pNewArena->size = GetSelectorLimit16(sel) + 1;
pNewArena->selCount = selcount;