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ntdll: Simplify the sanity checks in RtlFreeHeap and RtlReAllocateHeap.

This commit is contained in:
Alexandre Julliard 2006-07-21 13:22:13 +02:00
parent 4ed286b431
commit d49884c3e9
1 changed files with 24 additions and 24 deletions
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48
dlls/ntdll/heap.c
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@ -969,12 +969,6 @@ static BOOL HEAP_IsRealArena( HEAP *heapPtr, /* [in] ptr to the heap */
SUBHEAP *subheap;
BOOL ret = TRUE;
if (!heapPtr || (heapPtr->magic != HEAP_MAGIC))
{
ERR("Invalid heap %p!\n", heapPtr );
return FALSE;
}
flags &= HEAP_NO_SERIALIZE;
flags |= heapPtr->flags;
/* calling HeapLock may result in infinite recursion, so do the critsect directly */
@ -1233,24 +1227,28 @@ BOOLEAN WINAPI RtlFreeHeap( HANDLE heap, ULONG flags, PVOID ptr )
flags &= HEAP_NO_SERIALIZE;
flags |= heapPtr->flags;
if (!(flags & HEAP_NO_SERIALIZE)) RtlEnterCriticalSection( &heapPtr->critSection );
if (!HEAP_IsRealArena( heapPtr, HEAP_NO_SERIALIZE, ptr, QUIET ))
{
if (!(flags & HEAP_NO_SERIALIZE)) RtlLeaveCriticalSection( &heapPtr->critSection );
RtlSetLastWin32ErrorAndNtStatusFromNtStatus( STATUS_INVALID_PARAMETER );
TRACE("(%p,%08lx,%p): returning FALSE\n", heap, flags, ptr );
return FALSE;
}
/* Some sanity checks */
pInUse = (ARENA_INUSE *)ptr - 1;
if (!(subheap = HEAP_FindSubHeap( heapPtr, pInUse ))) goto error;
if ((char *)pInUse < (char *)subheap + subheap->headerSize) goto error;
if (!HEAP_ValidateInUseArena( subheap, pInUse, QUIET )) goto error;
/* Turn the block into a free block */
pInUse = (ARENA_INUSE *)ptr - 1;
subheap = HEAP_FindSubHeap( heapPtr, pInUse );
HEAP_MakeInUseBlockFree( subheap, pInUse );
if (!(flags & HEAP_NO_SERIALIZE)) RtlLeaveCriticalSection( &heapPtr->critSection );
TRACE("(%p,%08lx,%p): returning TRUE\n", heap, flags, ptr );
return TRUE;
error:
if (!(flags & HEAP_NO_SERIALIZE)) RtlLeaveCriticalSection( &heapPtr->critSection );
RtlSetLastWin32ErrorAndNtStatusFromNtStatus( STATUS_INVALID_PARAMETER );
TRACE("(%p,%08lx,%p): returning FALSE\n", heap, flags, ptr );
return FALSE;
}
@ -1292,18 +1290,14 @@ PVOID WINAPI RtlReAllocateHeap( HANDLE heap, ULONG flags, PVOID ptr, SIZE_T size
if (rounded_size < HEAP_MIN_DATA_SIZE) rounded_size = HEAP_MIN_DATA_SIZE;
if (!(flags & HEAP_NO_SERIALIZE)) RtlEnterCriticalSection( &heapPtr->critSection );
if (!HEAP_IsRealArena( heapPtr, HEAP_NO_SERIALIZE, ptr, QUIET ))
{
if (!(flags & HEAP_NO_SERIALIZE)) RtlLeaveCriticalSection( &heapPtr->critSection );
RtlSetLastWin32ErrorAndNtStatusFromNtStatus( STATUS_INVALID_PARAMETER );
TRACE("(%p,%08lx,%p,%08lx): returning NULL\n", heap, flags, ptr, size );
return NULL;
}
pArena = (ARENA_INUSE *)ptr - 1;
if (!(subheap = HEAP_FindSubHeap( heapPtr, pArena ))) goto error;
if ((char *)pArena < (char *)subheap + subheap->headerSize) goto error;
if (!HEAP_ValidateInUseArena( subheap, pArena, QUIET )) goto error;
/* Check if we need to grow the block */
pArena = (ARENA_INUSE *)ptr - 1;
subheap = HEAP_FindSubHeap( heapPtr, pArena );
oldSize = (pArena->size & ARENA_SIZE_MASK);
if (rounded_size > oldSize)
{
@ -1380,6 +1374,12 @@ PVOID WINAPI RtlReAllocateHeap( HANDLE heap, ULONG flags, PVOID ptr, SIZE_T size
TRACE("(%p,%08lx,%p,%08lx): returning %p\n", heap, flags, ptr, size, pArena + 1 );
return (LPVOID)(pArena + 1);
error:
if (!(flags & HEAP_NO_SERIALIZE)) RtlLeaveCriticalSection( &heapPtr->critSection );
RtlSetLastWin32ErrorAndNtStatusFromNtStatus( STATUS_INVALID_PARAMETER );
TRACE("(%p,%08lx,%p,%08lx): returning NULL\n", heap, flags, ptr, size );
return NULL;
}