public NvInternalResult SignalEvent(uint eventId)
{
if (eventId >= EventsCount)
{
return(NvInternalResult.InvalidInput);
}
NvHostEvent hostEvent = Events[eventId];
if (hostEvent == null)
{
return(NvInternalResult.InvalidInput);
}
NvHostEventState oldState = hostEvent.State;
if (oldState == NvHostEventState.Waiting)
{
hostEvent.State = NvHostEventState.Cancelling;
hostEvent.Cancel(_device.Gpu);
}
hostEvent.State = NvHostEventState.Cancelled;
return(NvInternalResult.Success);
}
private NvInternalResult EventSignal(ref uint userEventId)
{
uint eventId = userEventId & ushort.MaxValue;
if (eventId >= EventsCount)
{
return(NvInternalResult.InvalidInput);
}
lock (_events)
{
NvHostEvent hostEvent = _events[eventId];
if (hostEvent == null)
{
return(NvInternalResult.InvalidInput);
}
hostEvent.Cancel(_device.Gpu);
_device.System.HostSyncpoint.UpdateMin(hostEvent.Fence.Id);
return(NvInternalResult.Success);
}
}
private NvInternalResult EventSignal(ref uint userEventId)
{
uint eventId = userEventId & ushort.MaxValue;
if (eventId >= EventsCount)
{
return(NvInternalResult.InvalidInput);
}
NvHostEvent hostEvent = _events[eventId];
if (hostEvent == null)
{
return(NvInternalResult.InvalidInput);
}
NvHostEventState oldState = hostEvent.State;
if (oldState == NvHostEventState.Waiting)
{
hostEvent.State = NvHostEventState.Cancelling;
hostEvent.Cancel(_device.Gpu);
}
hostEvent.State = NvHostEventState.Cancelled;
return(NvInternalResult.Success);
}
public override void Close()
{
Logger.Warning?.Print(LogClass.ServiceNv, "Closing channel");
lock (_events)
{
// If the device file need to be closed, cancel all user events and dispose events.
for (int i = 0; i < _events.Length; i++)
{
NvHostEvent evnt = _events[i];
if (evnt != null)
{
lock (evnt.Lock)
{
if (evnt.State == NvHostEventState.Waiting)
{
evnt.State = NvHostEventState.Cancelling;
evnt.Cancel(_device.Gpu);
}
else if (evnt.State == NvHostEventState.Signaling)
{
// Wait at max 9ms if the guest app is trying to signal the event while closing it..
int retryCount = 0;
do
{
if (retryCount++ > 9)
{
break;
}
// TODO: This should be handled by the kernel (reschedule the current thread ect), waiting for Kernel decoupling work.
Thread.Sleep(1);
} while (evnt.State != NvHostEventState.Signaled);
}
evnt.CloseEvent(Context);
_events[i] = null;
}
}
}
}
}
