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Use exception handler for GlobalUnlock, GlobalFree.

This commit is contained in:
Andreas Mohr 2001-11-20 20:26:35 +00:00 committed by Alexandre Julliard
parent ae1c12c4cd
commit 55a14edd17
1 changed files with 67 additions and 48 deletions
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115
memory/global.c
View File

@ -1103,31 +1103,39 @@ LPVOID WINAPI GlobalLock(
BOOL WINAPI GlobalUnlock(
HGLOBAL hmem /* [in] Handle of global memory object */
) {
PGLOBAL32_INTERN pintern;
BOOL locked;
PGLOBAL32_INTERN pintern;
BOOL locked;
if(ISPOINTER(hmem))
return FALSE;
if (ISPOINTER(hmem)) return FALSE;
/* HeapLock(GetProcessHeap()); */
pintern=HANDLE_TO_INTERN(hmem);
if(pintern->Magic==MAGIC_GLOBAL_USED)
{
if((pintern->LockCount<GLOBAL_LOCK_MAX)&&(pintern->LockCount>0))
pintern->LockCount--;
__TRY
{
/* HeapLock(GetProcessHeap()); */
pintern=HANDLE_TO_INTERN(hmem);
if(pintern->Magic==MAGIC_GLOBAL_USED)
{
if((pintern->LockCount<GLOBAL_LOCK_MAX)&&(pintern->LockCount>0))
pintern->LockCount--;
locked = (pintern->LockCount != 0);
if (!locked) SetLastError(NO_ERROR);
}
else
{
WARN("invalid handle\n");
SetLastError(ERROR_INVALID_HANDLE);
locked=FALSE;
}
/* HeapUnlock(GetProcessHeap()); */
return locked;
locked = (pintern->LockCount != 0);
if (!locked) SetLastError(NO_ERROR);
}
else
{
WARN("invalid handle\n");
SetLastError(ERROR_INVALID_HANDLE);
locked=FALSE;
}
/* HeapUnlock(GetProcessHeap()); */
}
__EXCEPT(page_fault)
{
ERR("page fault occurred ! Caused by bug ?\n");
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
__ENDTRY
return locked;
}
@ -1305,35 +1313,46 @@ HGLOBAL WINAPI GlobalReAlloc(
HGLOBAL WINAPI GlobalFree(
HGLOBAL hmem /* [in] Handle of global memory object */
) {
PGLOBAL32_INTERN pintern;
HGLOBAL hreturned = 0;
PGLOBAL32_INTERN pintern;
HGLOBAL hreturned;
if(ISPOINTER(hmem)) /* POINTER */
{
if(!HeapFree(GetProcessHeap(), 0, (LPVOID) hmem)) hmem = 0;
}
else /* HANDLE */
{
/* HeapLock(heap); */
pintern=HANDLE_TO_INTERN(hmem);
if(pintern->Magic==MAGIC_GLOBAL_USED)
{
__TRY
{
hreturned = 0;
if(ISPOINTER(hmem)) /* POINTER */
{
if(!HeapFree(GetProcessHeap(), 0, (LPVOID) hmem)) hmem = 0;
}
else /* HANDLE */
{
/* HeapLock(heap); */
pintern=HANDLE_TO_INTERN(hmem);
/* WIN98 does not make this test. That is you can free a */
/* block you have not unlocked. Go figure!! */
/* if(pintern->LockCount!=0) */
/* SetLastError(ERROR_INVALID_HANDLE); */
if(pintern->Magic==MAGIC_GLOBAL_USED)
{
if(pintern->Pointer)
if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-sizeof(HGLOBAL)))
hreturned=hmem;
if(!HeapFree(GetProcessHeap(), 0, pintern))
hreturned=hmem;
}
/* HeapUnlock(heap); */
}
return hreturned;
/* WIN98 does not make this test. That is you can free a */
/* block you have not unlocked. Go figure!! */
/* if(pintern->LockCount!=0) */
/* SetLastError(ERROR_INVALID_HANDLE); */
if(pintern->Pointer)
if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-sizeof(HGLOBAL)))
hreturned=hmem;
if(!HeapFree(GetProcessHeap(), 0, pintern))
hreturned=hmem;
}
/* HeapUnlock(heap); */
}
}
__EXCEPT(page_fault)
{
ERR("page fault occurred ! Caused by bug ?\n");
SetLastError( ERROR_INVALID_PARAMETER );
return hmem;
}
__ENDTRY
return hreturned;
}