//.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- DtuEventsSetEvent -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
//
static DtStatus DtuEventsSetEvent(
DtuEvents* pDtuEvents,
UInt EventType,
UInt Value1,
UInt Value2)
{
DtuEvent* pDtuEvent;
// Skip unregistered events
if ((EventType & pDtuEvents->m_EventTypeMask) != 0)
{
DtSpinLockAcquire(&pDtuEvents->m_Lock);
if (EventType == DTU_EVENT_TYPE_IOCONFIG)
{
UInt i;
for (i=0; i<pDtuEvents->m_NumPendingEvents; i++)
{
if (pDtuEvents->m_PendingEvents[i].m_EventType==DTU_EVENT_TYPE_IOCONFIG
&& pDtuEvents->m_PendingEvents[i].m_EventValue1==Value1)
{
// Event is already pending, don't create a duplicate
DtSpinLockRelease(&pDtuEvents->m_Lock);
return DT_STATUS_OK;
}
}
}
// Add new events
if (pDtuEvents->m_NumPendingEvents == MAX_PENDING_EVENTS)
{
// Remove oldest event
DtDbgOut(AVG, EVENTS, "Max. number of events. Remove old event");
DtMemMove(&pDtuEvents->m_PendingEvents[0],
&pDtuEvents->m_PendingEvents[1],
sizeof(DtuEvent) * (MAX_PENDING_EVENTS - 1));
pDtuEvent = &pDtuEvents->m_PendingEvents[MAX_PENDING_EVENTS - 1];
} else {
pDtuEvent = &pDtuEvents->m_PendingEvents[pDtuEvents->m_NumPendingEvents];
pDtuEvents->m_NumPendingEvents++;
}
DtDbgOut(MAX, EVENTS, "New event #%d. Type: %d, Value1: %d, Value2: %d",
pDtuEvents->m_NumPendingEvents, EventType, Value1, Value2);
pDtuEvent->m_EventType = EventType;
pDtuEvent->m_EventValue1 = Value1;
pDtuEvent->m_EventValue2 = Value2;
// Trigger wait function if it was waiting
DtEventSet(&pDtuEvents->m_PendingEvent);
DtSpinLockRelease(&pDtuEvents->m_Lock);
}
return DT_STATUS_OK;
}
//.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- DtaEventsSetEvent -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
//
static DtStatus DtaEventsSetEvent(
DtaEvents* pDtaEvents,
UInt EventType,
UInt Value1,
UInt Value2)
{
DtStatus Result = DT_STATUS_OK;
DtaEvent* pDtaEvent;
// Skip unregistered events
if ((EventType & pDtaEvents->m_EventTypeMask) != 0)
{
DtSpinLockAcquire(&pDtaEvents->m_Lock);
// Add new events
if (pDtaEvents->m_NumPendingEvents == MAX_PENDING_EVENTS)
{
// Remove oldest event
DtDbgOut(AVG, EVENTS, "Max. number of events. Remove old event");
DtMemMove(&pDtaEvents->m_PendingEvents[0],
&pDtaEvents->m_PendingEvents[1],
sizeof(DtaEvent) * (MAX_PENDING_EVENTS - 1));
pDtaEvent = &pDtaEvents->m_PendingEvents[MAX_PENDING_EVENTS - 1];
} else {
pDtaEvent = &pDtaEvents->m_PendingEvents[pDtaEvents->m_NumPendingEvents];
pDtaEvents->m_NumPendingEvents++;
}
DtDbgOut(MAX, EVENTS, "New event #%d. Type: %d, Value1: %d, Value2: %d",
pDtaEvents->m_NumPendingEvents, EventType, Value1, Value2);
pDtaEvent->m_EventType = EventType;
pDtaEvent->m_EventValue1 = Value1;
pDtaEvent->m_EventValue2 = Value2;
// Trigger wait function if it was waiting
DtEventSet(&pDtaEvents->m_PendingEvent);
DtSpinLockRelease(&pDtaEvents->m_Lock);
}
return Result;
}
//-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- DtuEventsGet -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
//
// Return a pending event. This functions blocks if no events are pending.
//
DtStatus DtuEventsGet(
DtuDeviceData* pDvcData,
DtFileObject* pFile,
UInt* pEventType,
UInt* pValue1,
UInt* pValue2,
Bool Wait)
{
DtStatus Result = DT_STATUS_OK;
DtuEvents* pDtuEvents;
if (pFile==NULL || pEventType==NULL || pValue1==NULL || pValue2==NULL)
return DT_STATUS_INVALID_PARAMETER;
// Get corresponding events object
pDtuEvents = DtuEventsGetEventsObject(pDvcData, pFile);
if (pDtuEvents == NULL)
Result = DT_STATUS_NOT_FOUND;
if (DT_SUCCESS(Result))
{
DtEventReset(&pDtuEvents->m_PendingEvent);
if (Wait && pDtuEvents->m_NumPendingEvents==0 && !pDtuEvents->m_CancelInProgress)
{
DtDbgOut(MAX, EVENTS, "Waiting for event");
// Wait for event to be triggered
DtEventWait(&pDtuEvents->m_PendingEvent, -1);
}
// The next request will be rejected by the IoCtl function, so we can reset
// the Cancel state here.
if (pDtuEvents->m_CancelInProgress)
Result = DT_STATUS_CANCELLED;
pDtuEvents->m_CancelInProgress = FALSE;
DtSpinLockAcquire(&pDtuEvents->m_Lock);
// Return pending events
if (pDtuEvents->m_NumPendingEvents != 0)
{
*pEventType = pDtuEvents->m_PendingEvents[0].m_EventType;
*pValue1 = pDtuEvents->m_PendingEvents[0].m_EventValue1;
*pValue2 = pDtuEvents->m_PendingEvents[0].m_EventValue2;
DtDbgOut(MAX, EVENTS, "Event #%d. Type: %d, Value1: %d, Value2: %d",
pDtuEvents->m_NumPendingEvents, *pEventType, *pValue1, *pValue2);
pDtuEvents->m_NumPendingEvents--;
if (pDtuEvents->m_NumPendingEvents != 0)
{
// Remove the old event
DtMemMove(&pDtuEvents->m_PendingEvents[0],
&pDtuEvents->m_PendingEvents[1],
sizeof(DtuEvent) * pDtuEvents->m_NumPendingEvents);
}
} else {
*pEventType = 0;
*pValue1 = 0;
*pValue2 = 0;
if (Result == DT_STATUS_OK)
Result = DT_STATUS_REQUEUE; // No pending events
DtDbgOut(MAX, EVENTS, "Event #%d. No event", pDtuEvents->m_NumPendingEvents);
}
DtSpinLockRelease(&pDtuEvents->m_Lock);
// Decrement refcount
DtuEventsUnrefEventsObject(pDvcData, pDtuEvents);
}
return Result;
}
