unsafe public int Read(byte *bufP, int count)
{
int r = 0;
var fdarray = new PollFD[1];
fdarray[0].fd = Handle;
fdarray[0].events = PollEvents.POLLIN | PollEvents.EPOLLRDHUP | PollEvents.EPOLLHUP | PollEvents.EPOLLERR;
do
{
if (poll(fdarray, 1, -1) == -1)
{
break;
}
if ((fdarray[0].revents & PollEvents.POLLIN) == 0)
{
break;
}
r = (int)read(Handle, bufP, (SizeT)count);
} while (r < 0 && UnixError.ShouldRetry);
if (r < 0)
{
throw UnixError.GetLastUnixException();
}
return(r);
}
/// <summary>
/// Polls a File Descriptor for the passed in flags.
/// </summary>
/// <param name="fd">The descriptor to poll</param>
/// <param name="flags">The flags to poll for</param>
/// <param name="timeout">The amount of time to wait; -1 for infinite, 0 for immediate return, and a positive number is the number of milliseconds</param>
/// <param name="resultFlags">The flags that were returned by the poll call</param>
/// <returns>
/// Returns a positive number (which is the number of structures with nonzero revent files), 0 for a timeout or no
/// descriptors were ready, or -1 on error.
/// </returns>
internal static unsafe int Poll(int fd, PollFlags flags, int timeout, out PollFlags resultFlags)
{
PollFD pfd = default(PollFD);
pfd.FD = fd;
pfd.Events = flags;
int result = Poll(&pfd, 1, timeout);
resultFlags = pfd.REvents;
return(result);
}
internal static unsafe extern int Poll(PollFD* pollData, uint numberOfPollFds, int timeout);
