/**
* Deals with any pending dummy request
*
* @returns true if no pending dummy request, false if still pending.
* @param pThis The instance data.
* @param cMillies The number of milliseconds to wait for any
* pending request to finish.
*/
static bool drvscsiAsyncIOLoopNoPendingDummy(PDRVSCSI pThis, uint32_t cMillies)
{
if (!pThis->pPendingDummyReq)
return true;
int rc = RTReqWait(pThis->pPendingDummyReq, cMillies);
if (RT_FAILURE(rc))
return false;
RTReqRelease(pThis->pPendingDummyReq);
pThis->pPendingDummyReq = NULL;
return true;
}
RTDECL(int) RTReqSubmit(PRTREQ hReq, RTMSINTERVAL cMillies)
{
LogFlow(("RTReqQueue: hReq=%p cMillies=%d\n", hReq, cMillies));
/*
* Verify the supplied package.
*/
PRTREQINT pReq = hReq;
AssertPtrReturn(pReq, VERR_INVALID_HANDLE);
AssertReturn(pReq->u32Magic == RTREQ_MAGIC, VERR_INVALID_HANDLE);
AssertMsgReturn(pReq->enmState == RTREQSTATE_ALLOCATED, ("%d\n", pReq->enmState), VERR_RT_REQUEST_STATE);
AssertMsgReturn(pReq->uOwner.hQueue && !pReq->pNext && pReq->EventSem != NIL_RTSEMEVENT,
("Invalid request package! Anyone cooking their own packages???\n"),
VERR_RT_REQUEST_INVALID_PACKAGE);
AssertMsgReturn(pReq->enmType > RTREQTYPE_INVALID && pReq->enmType < RTREQTYPE_MAX,
("Invalid package type %d valid range %d-%d inclusively. This was verified on alloc too...\n",
pReq->enmType, RTREQTYPE_INVALID + 1, RTREQTYPE_MAX - 1),
VERR_RT_REQUEST_INVALID_TYPE);
/*
* Insert it. Donate the caller's reference if RTREQFLAGS_NO_WAIT is set,
* otherwise retain another reference for the queue.
*/
pReq->uSubmitNanoTs = RTTimeNanoTS();
pReq->enmState = RTREQSTATE_QUEUED;
unsigned fFlags = ((RTREQ volatile *)pReq)->fFlags; /* volatile paranoia */
if (!(fFlags & RTREQFLAGS_NO_WAIT))
RTReqRetain(pReq);
if (!pReq->fPoolOrQueue)
rtReqQueueSubmit(pReq->uOwner.hQueue, pReq);
else
rtReqPoolSubmit(pReq->uOwner.hPool, pReq);
/*
* Wait and return.
*/
int rc = VINF_SUCCESS;
if (!(fFlags & RTREQFLAGS_NO_WAIT))
rc = RTReqWait(pReq, cMillies);
LogFlow(("RTReqQueue: returns %Rrc\n", rc));
return rc;
}
