RTDECL(void *) RTHandleTableFree(RTHANDLETABLE hHandleTable, uint32_t h)
{
/* validate the input */
PRTHANDLETABLEINT pThis = (PRTHANDLETABLEINT)hHandleTable;
AssertPtrReturn(pThis, NULL);
AssertReturn(pThis->u32Magic == RTHANDLETABLE_MAGIC, NULL);
AssertReturn(!(pThis->fFlags & RTHANDLETABLE_FLAGS_CONTEXT), NULL);
void *pvObj = NULL;
/* acquire the lock */
rtHandleTableLock(pThis);
/*
* Perform the lookup and retaining.
*/
PRTHTENTRY pEntry = rtHandleTableLookupSimple(pThis, h);
if (pEntry)
{
pvObj = pEntry->pvObj;
if (!RTHT_IS_FREE(pvObj))
{
if (pThis->pfnRetain)
{
int rc = pThis->pfnRetain(hHandleTable, pEntry->pvObj, NULL, pThis->pvRetainUser);
if (RT_FAILURE(rc))
pvObj = NULL;
}
/*
* Link it into the free list.
*/
if (pvObj)
{
PRTHTENTRYFREE pFree = (PRTHTENTRYFREE)pEntry;
RTHT_SET_FREE_IDX(pFree, NIL_RTHT_INDEX);
uint32_t const i = h - pThis->uBase;
if (pThis->iFreeTail == NIL_RTHT_INDEX)
pThis->iFreeHead = pThis->iFreeTail = i;
else
{
PRTHTENTRYFREE pPrev = (PRTHTENTRYFREE)rtHandleTableLookupSimpleIdx(pThis, pThis->iFreeTail);
Assert(pPrev);
RTHT_SET_FREE_IDX(pPrev, i);
pThis->iFreeTail = i;
}
Assert(pThis->cCurAllocated > 0);
pThis->cCurAllocated--;
}
}
else
pvObj = NULL;
}
/* release the lock */
rtHandleTableUnlock(pThis);
return pvObj;
}
RTDECL(void *) RTHandleTableLookupWithCtx(RTHANDLETABLE hHandleTable, uint32_t h, void *pvCtx)
{
void *pvObj = NULL;
PRTHTENTRYCTX pEntry;
PRTHANDLETABLEINT pThis;
/* validate the input */
pThis = (PRTHANDLETABLEINT)hHandleTable;
AssertPtrReturn(pThis, NULL);
AssertReturn(pThis->u32Magic == RTHANDLETABLE_MAGIC, NULL);
AssertReturn(pThis->fFlags & RTHANDLETABLE_FLAGS_CONTEXT, NULL);
/* acquire the lock */
rtHandleTableLock(pThis);
/*
* Perform the lookup and retaining.
*/
pEntry = rtHandleTableLookupWithCtx(pThis, h);
if (pEntry && pEntry->pvCtx == pvCtx)
{
pvObj = pEntry->pvObj;
if (!RTHT_IS_FREE(pvObj))
{
if (pThis->pfnRetain)
{
int rc = pThis->pfnRetain(hHandleTable, pEntry->pvObj, pvCtx, pThis->pvRetainUser);
if (RT_FAILURE(rc))
pvObj = NULL;
}
}
else
pvObj = NULL;
}
/* release the lock */
rtHandleTableUnlock(pThis);
return pvObj;
}