RTDECL(int) RTTraceSetDefaultBuf(RTTRACEBUF hTraceBuf)
{
/* Retain the new buffer. */
if (hTraceBuf != NIL_RTTRACEBUF)
{
uint32_t cRefs = RTTraceBufRetain(hTraceBuf);
if (cRefs >= _1M)
return VERR_INVALID_HANDLE;
}
RTTRACEBUF hOldTraceBuf;
#ifdef IN_RC
hOldTraceBuf = (RTTRACEBUF)ASMAtomicXchgPtr((void **)&g_hDefaultTraceBuf, hTraceBuf);
#else
ASMAtomicXchgHandle(&g_hDefaultTraceBuf, hTraceBuf, &hOldTraceBuf);
#endif
if ( hOldTraceBuf != NIL_RTTRACEBUF
&& hOldTraceBuf != hTraceBuf)
{
/* Race prevention kludge. */
#ifndef IN_RC
RTThreadSleep(33);
#endif
RTTraceBufRelease(hOldTraceBuf);
}
return VINF_SUCCESS;
}
RTDECL(int) RTReqQueueDestroy(RTREQQUEUE hQueue)
{
/*
* Check input.
*/
if (hQueue == NIL_RTREQQUEUE)
return VINF_SUCCESS;
PRTREQQUEUEINT pQueue = hQueue;
AssertPtrReturn(pQueue, VERR_INVALID_HANDLE);
AssertReturn(ASMAtomicCmpXchgU32(&pQueue->u32Magic, RTREQQUEUE_MAGIC_DEAD, RTREQQUEUE_MAGIC), VERR_INVALID_HANDLE);
RTSemEventDestroy(pQueue->EventSem);
pQueue->EventSem = NIL_RTSEMEVENT;
for (unsigned i = 0; i < RT_ELEMENTS(pQueue->apReqFree); i++)
{
PRTREQ pReq = (PRTREQ)ASMAtomicXchgPtr((void **)&pQueue->apReqFree[i], NULL);
while (pReq)
{
PRTREQ pNext = pReq->pNext;
rtReqFreeIt(pReq);
pReq = pNext;
}
}
RTMemFree(pQueue);
return VINF_SUCCESS;
}
/**
* Destruct a status driver instance.
*
* @returns VBox status.
* @param pDrvIns The driver instance data.
*/
DECLCALLBACK(void) VMStatus::drvDestruct(PPDMDRVINS pDrvIns)
{
PDRVMAINSTATUS pData = PDMINS_2_DATA(pDrvIns, PDRVMAINSTATUS);
LogFlow(("VMStatus::drvDestruct: iInstance=%d\n", pDrvIns->iInstance));
if (pData->papLeds)
{
unsigned iLed = pData->iLastLUN - pData->iFirstLUN + 1;
while (iLed-- > 0)
ASMAtomicXchgPtr((void * volatile *)&pData->papLeds[iLed], NULL);
}
}
/**
* Notification about a unit which have been changed.
*
* The driver must discard any pointers to data owned by
* the unit and requery it.
*
* @param pInterface Pointer to the interface structure containing the called function pointer.
* @param iLUN The unit number.
*/
DECLCALLBACK(void) VMStatus::drvUnitChanged(PPDMILEDCONNECTORS pInterface, unsigned iLUN)
{
PDRVMAINSTATUS pData = (PDRVMAINSTATUS)(void *)pInterface;
if (iLUN >= pData->iFirstLUN && iLUN <= pData->iLastLUN)
{
PPDMLED pLed;
int rc = pData->pLedPorts->pfnQueryStatusLed(pData->pLedPorts, iLUN, &pLed);
if (RT_FAILURE(rc))
pLed = NULL;
ASMAtomicXchgPtr((void * volatile *)&pData->papLeds[iLUN - pData->iFirstLUN], pLed);
Log(("drvUnitChanged: iLUN=%d pLed=%p\n", iLUN, pLed));
}
}
static PVBOXMP_CRSHGSMICON_BUFDR vboxMpCrShgsmiBufCacheGetAllocDr(PVBOXMP_CRSHGSMICON_BUFDR_CACHE pCache)
{
PVBOXMP_CRSHGSMICON_BUFDR pBufDr = (PVBOXMP_CRSHGSMICON_BUFDR)ASMAtomicXchgPtr((void * volatile *)&pCache->pBufDr, NULL);
if (!pBufDr)
{
pBufDr = (PVBOXMP_CRSHGSMICON_BUFDR)vboxWddmMemAllocZero(sizeof (*pBufDr));
if (!pBufDr)
{
WARN(("vboxWddmMemAllocZero failed!"));
return NULL;
}
}
return pBufDr;
}