[CommandHipc(31)] // 7.0.0+
// EventFd(u64 initval, nn::socket::EventFdFlags flags) -> (i32 ret, u32 bsd_errno)
public ResultCode EventFd(ServiceCtx context)
{
ulong initialValue = context.RequestData.ReadUInt64();
EventFdFlags flags = (EventFdFlags)context.RequestData.ReadUInt32();
EventFileDescriptor newEventFile = new EventFileDescriptor(initialValue, flags);
LinuxError errno = LinuxError.SUCCESS;
int newSockFd = _context.RegisterFileDescriptor(newEventFile);
if (newSockFd == -1)
{
errno = LinuxError.EBADF;
}
return(WriteBsdResult(context, newSockFd, errno));
}
public LinuxError Poll(List <PollEvent> events, int timeoutMilliseconds, out int updatedCount)
{
updatedCount = 0;
List <ManualResetEvent> waiters = new List <ManualResetEvent>();
for (int i = 0; i < events.Count; i++)
{
PollEvent evnt = events[i];
EventFileDescriptor socket = (EventFileDescriptor)evnt.FileDescriptor;
bool isValidEvent = false;
if (evnt.Data.InputEvents.HasFlag(PollEventTypeMask.Input) ||
evnt.Data.InputEvents.HasFlag(PollEventTypeMask.UrgentInput))
{
waiters.Add(socket.ReadEvent);
isValidEvent = true;
}
if (evnt.Data.InputEvents.HasFlag(PollEventTypeMask.Output))
{
waiters.Add(socket.WriteEvent);
isValidEvent = true;
}
if (!isValidEvent)
{
Logger.Warning?.Print(LogClass.ServiceBsd, $"Unsupported Poll input event type: {evnt.Data.InputEvents}");
return(LinuxError.EINVAL);
}
}
int index = WaitHandle.WaitAny(waiters.ToArray(), timeoutMilliseconds);
if (index != WaitHandle.WaitTimeout)
{
for (int i = 0; i < events.Count; i++)
{
PollEvent evnt = events[i];
EventFileDescriptor socket = (EventFileDescriptor)evnt.FileDescriptor;
if ((evnt.Data.InputEvents.HasFlag(PollEventTypeMask.Input) ||
evnt.Data.InputEvents.HasFlag(PollEventTypeMask.UrgentInput)) &&
socket.ReadEvent.WaitOne(0))
{
waiters.Add(socket.ReadEvent);
}
if ((evnt.Data.InputEvents.HasFlag(PollEventTypeMask.Output)) &&
socket.WriteEvent.WaitOne(0))
{
waiters.Add(socket.WriteEvent);
}
}
}
else
{
return(LinuxError.ETIMEDOUT);
}
return(LinuxError.SUCCESS);
}
