/**
* Deletes one critical section.
*
* @returns Return code from RTCritSectDelete.
*
* @param pVM Pointer to the VM.
* @param pCritSect The critical section.
* @param pPrev The previous critical section in the list.
* @param fFinal Set if this is the final call and statistics shouldn't be deregistered.
*
* @remarks Caller must have entered the ListCritSect.
*/
static int pdmR3CritSectDeleteOne(PVM pVM, PUVM pUVM, PPDMCRITSECTINT pCritSect, PPDMCRITSECTINT pPrev, bool fFinal)
{
/*
* Assert free waiters and so on (c&p from RTCritSectDelete).
*/
Assert(pCritSect->Core.u32Magic == RTCRITSECT_MAGIC);
Assert(pCritSect->Core.cNestings == 0);
Assert(pCritSect->Core.cLockers == -1);
Assert(pCritSect->Core.NativeThreadOwner == NIL_RTNATIVETHREAD);
Assert(RTCritSectIsOwner(&pUVM->pdm.s.ListCritSect));
/*
* Unlink it.
*/
if (pPrev)
pPrev->pNext = pCritSect->pNext;
else
pUVM->pdm.s.pCritSects = pCritSect->pNext;
/*
* Delete it (parts taken from RTCritSectDelete).
* In case someone is waiting we'll signal the semaphore cLockers + 1 times.
*/
ASMAtomicWriteU32(&pCritSect->Core.u32Magic, 0);
SUPSEMEVENT hEvent = (SUPSEMEVENT)pCritSect->Core.EventSem;
pCritSect->Core.EventSem = NIL_RTSEMEVENT;
while (pCritSect->Core.cLockers-- >= 0)
SUPSemEventSignal(pVM->pSession, hEvent);
ASMAtomicWriteS32(&pCritSect->Core.cLockers, -1);
int rc = SUPSemEventClose(pVM->pSession, hEvent);
AssertRC(rc);
RTLockValidatorRecExclDestroy(&pCritSect->Core.pValidatorRec);
pCritSect->pNext = NULL;
pCritSect->pvKey = NULL;
pCritSect->pVMR3 = NULL;
pCritSect->pVMR0 = NIL_RTR0PTR;
pCritSect->pVMRC = NIL_RTRCPTR;
RTStrFree((char *)pCritSect->pszName);
pCritSect->pszName = NULL;
if (!fFinal)
{
STAMR3Deregister(pVM, &pCritSect->StatContentionRZLock);
STAMR3Deregister(pVM, &pCritSect->StatContentionRZUnlock);
STAMR3Deregister(pVM, &pCritSect->StatContentionR3);
#ifdef VBOX_WITH_STATISTICS
STAMR3Deregister(pVM, &pCritSect->StatLocked);
#endif
}
return rc;
}
static int pdmacFileEpClose(PPDMASYNCCOMPLETIONENDPOINT pEndpoint)
{
int rc = VINF_SUCCESS;
PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pEndpoint->pEpClass;
/* Make sure that all tasks finished for this endpoint. */
rc = pdmacFileAioMgrCloseEndpoint(pEpFile->pAioMgr, pEpFile);
AssertRC(rc);
/*
* If the async I/O manager is in failsafe mode this is the only endpoint
* he processes and thus can be destroyed now.
*/
if (pEpFile->pAioMgr->enmMgrType == PDMACEPFILEMGRTYPE_SIMPLE)
pdmacFileAioMgrDestroy(pEpClassFile, pEpFile->pAioMgr);
/* Free cached tasks. */
PPDMACTASKFILE pTask = pEpFile->pTasksFreeHead;
while (pTask)
{
PPDMACTASKFILE pTaskFree = pTask;
pTask = pTask->pNext;
MMR3HeapFree(pTaskFree);
}
/* Destroy the locked ranges tree now. */
RTAvlrFileOffsetDestroy(pEpFile->AioMgr.pTreeRangesLocked, pdmacFileEpRangesLockedDestroy, NULL);
RTFileClose(pEpFile->hFile);
#ifdef VBOX_WITH_STATISTICS
STAMR3Deregister(pEpClassFile->Core.pVM, &pEpFile->StatRead);
STAMR3Deregister(pEpClassFile->Core.pVM, &pEpFile->StatWrite);
#endif
return VINF_SUCCESS;
}
/**
* Destroy a queue.
*
* @returns VBox status code.
* @param pQueue Queue to destroy.
* @thread Emulation thread only.
*/
VMMR3_INT_DECL(int) PDMR3QueueDestroy(PPDMQUEUE pQueue)
{
LogFlow(("PDMR3QueueDestroy: pQueue=%p\n", pQueue));
/*
* Validate input.
*/
if (!pQueue)
return VERR_INVALID_PARAMETER;
Assert(pQueue && pQueue->pVMR3);
PVM pVM = pQueue->pVMR3;
PUVM pUVM = pVM->pUVM;
pdmLock(pVM);
/*
* Unlink it.
*/
if (pQueue->pTimer)
{
if (pUVM->pdm.s.pQueuesTimer != pQueue)
{
PPDMQUEUE pCur = pUVM->pdm.s.pQueuesTimer;
while (pCur)
{
if (pCur->pNext == pQueue)
{
pCur->pNext = pQueue->pNext;
break;
}
pCur = pCur->pNext;
}
AssertMsg(pCur, ("Didn't find the queue!\n"));
}
else
pUVM->pdm.s.pQueuesTimer = pQueue->pNext;
}
else
{
if (pUVM->pdm.s.pQueuesForced != pQueue)
{
PPDMQUEUE pCur = pUVM->pdm.s.pQueuesForced;
while (pCur)
{
if (pCur->pNext == pQueue)
{
pCur->pNext = pQueue->pNext;
break;
}
pCur = pCur->pNext;
}
AssertMsg(pCur, ("Didn't find the queue!\n"));
}
else
pUVM->pdm.s.pQueuesForced = pQueue->pNext;
}
pQueue->pNext = NULL;
pQueue->pVMR3 = NULL;
pdmUnlock(pVM);
/*
* Deregister statistics.
*/
STAMR3Deregister(pVM, &pQueue->cbItem);
STAMR3Deregister(pVM, &pQueue->cbItem);
STAMR3Deregister(pVM, &pQueue->StatAllocFailures);
STAMR3Deregister(pVM, &pQueue->StatInsert);
STAMR3Deregister(pVM, &pQueue->StatFlush);
STAMR3Deregister(pVM, &pQueue->StatFlushLeftovers);
#ifdef VBOX_WITH_STATISTICS
STAMR3Deregister(pVM, &pQueue->StatFlushPrf);
STAMR3Deregister(pVM, (void *)&pQueue->cStatPending);
#endif
/*
* Destroy the timer and free it.
*/
if (pQueue->pTimer)
{
TMR3TimerDestroy(pQueue->pTimer);
pQueue->pTimer = NULL;
}
if (pQueue->pVMRC)
{
pQueue->pVMRC = NIL_RTRCPTR;
pQueue->pVMR0 = NIL_RTR0PTR;
MMHyperFree(pVM, pQueue);
}
else
MMR3HeapFree(pQueue);
return VINF_SUCCESS;
}
