poll man page on SmartOS

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POLL.H(3HEAD)							 POLL.H(3HEAD)

NAME
       poll.h, poll - definitions for the poll() function

SYNOPSIS
       #include <poll.h>

DESCRIPTION
       The  <poll.h>  header  defines the pollfd structure, which includes the
       following members:

       int fd
			the following descriptor being polled

       short events
			the input event flags (see below)

       short revents
			the output event flags (see below)

       The <poll.h> header defines the following type through typedef:

       nfds_t
		 an unsigned integer type used for the number of file descrip‐
		 tors

       The  implementation  supports  one  or more programming environments in
       which the width of nfds_t is no greater than the width  of  type	 long.
       The  names  of these programming environments can be obtained using the
       confstr() function or the getconf utility.  See	confstr(3C)  and  get‐
       conf(1).

       The following symbolic constants are defined, zero or more of which can
       be OR'ed together to form the events or revents members	in the	pollfd
       structure:

       POLLIN
		     Data  other  than	high-priority data can be read without
		     blocking.

       POLLRDNORM
		     Normal data can be read without blocking.

       POLLRDBAND
		     Priority data can be read without blocking.

       POLLPRI
		     High priority data can be read without blocking.

       POLLOUT
		     Normal data can be written without blocking.

       POLLWRNORM
		     Equivalent to POLLOUT.

       POLLWRBAND
		     Priority data can be written.

       POLLERR
		     An error has occurred (revents only).

       POLLHUP
		     Device has been disconnected (revents only).

       POLLNVAL
		     Invalid fd member (revents only).

       The significance and semantics of normal, priority,  and	 high-priority
       data are file and device-specific.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌────────────────────┬─────────────────┐
       │  ATTRIBUTE TYPE    │ ATTRIBUTE VALUE │
       ├────────────────────┼─────────────────┤
       │Interface Stability │ Standard	      │
       └────────────────────┴─────────────────┘

SEE ALSO
       getconf(1), poll(2), confstr(3C), attributes(5), standards(5)

				  Sep 9, 2004			 POLL.H(3HEAD)
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