/**
* Perform pending wake ups in work loop context.
*/
static void
deferredInterruptHandler(OSObject *pOwner, IOInterruptEventSource *pSrc, int cInts)
{
NOREF(pOwner); NOREF(pSrc); NOREF(cInts);
VBoxGuestWaitDoWakeUps(&g_DevExt);
}
/**
* DPC handler.
*
* @param pDPC DPC descriptor.
* @param pDevObj Device object.
* @param pIrp Interrupt request packet.
* @param pContext Context specific pointer.
*/
void vboxguestwinDpcHandler(PKDPC pDPC, PDEVICE_OBJECT pDevObj,
PIRP pIrp, PVOID pContext)
{
PVBOXGUESTDEVEXT pDevExt = (PVBOXGUESTDEVEXT)pDevObj->DeviceExtension;
Log(("VBoxGuest::vboxguestwinGuestDpcHandler: pDevExt=0x%p\n", pDevExt));
/* test & reset the counter */
if (ASMAtomicXchgU32(&pDevExt->u32MousePosChangedSeq, 0))
{
Assert(KeGetCurrentIrql() == DISPATCH_LEVEL);
/* we need a lock here to avoid concurrency with the set event ioctl handler thread,
* i.e. to prevent the event from destroyed while we're using it */
KeAcquireSpinLockAtDpcLevel(&pDevExt->win.s.MouseEventAccessLock);
if (pDevExt->win.s.pfnMouseNotify)
{
pDevExt->win.s.pfnMouseNotify(pDevExt->win.s.pvMouseNotify);
}
KeReleaseSpinLockFromDpcLevel(&pDevExt->win.s.MouseEventAccessLock);
}
/* Process the wake-up list we were asked by the scheduling a DPC
* in vboxguestwinIsrHandler(). */
VBoxGuestWaitDoWakeUps(pDevExt);
}
