IO::Poll(3p) Perl Programmers Reference Guide IO::Poll(3p) #

IO::Poll(3p) Perl Programmers Reference Guide IO::Poll(3p)

NNAAMMEE #

 IO::Poll - Object interface to system poll call

SSYYNNOOPPSSIISS #

     use IO::Poll qw(POLLRDNORM POLLWRNORM POLLIN POLLHUP);

     $poll = IO::Poll->new();

     $poll->mask($input_handle => POLLIN);
     $poll->mask($output_handle => POLLOUT);

     $poll->poll($timeout);

     $ev = $poll->events($input);

DDEESSCCRRIIPPTTIIOONN #

 "IO::Poll" is a simple interface to the system level poll routine.

MMEETTHHOODDSS #

 mask ( IO [, EVENT_MASK ] )
     If EVENT_MASK is given, then, if EVENT_MASK is non-zero, IO is added
     to the list of file descriptors and the next call to poll will check
     for any event specified in EVENT_MASK. If EVENT_MASK is zero then IO
     will be removed from the list of file descriptors.

     If EVENT_MASK is not given then the return value will be the current
     event mask value for IO.

 poll ( [ TIMEOUT ] )
     Call the system level poll routine. If TIMEOUT is not specified then
     the call will block. Returns the number of handles which had events
     happen, or -1 on error.

 events ( IO )
     Returns the event mask which represents the events that happened on
     IO during the last call to "poll".

 remove ( IO )
     Remove IO from the list of file descriptors for the next poll.

 handles( [ EVENT_MASK ] )
     Returns a list of handles. If EVENT_MASK is not given then a list of
     all handles known will be returned. If EVENT_MASK is given then a
     list of handles will be returned which had one of the events
     specified by EVENT_MASK happen during the last call ti "poll"

SSEEEE AALLSSOO #

 ppoollll(2), IO::Handle, IO::Select

AAUUTTHHOORR #

 Graham Barr. Currently maintained by the Perl Porters.  Please report all
 bugs at <https://github.com/Perl/perl5/issues>.

CCOOPPYYRRIIGGHHTT #

 Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
 This program is free software; you can redistribute it and/or modify it
 under the same terms as Perl itself.

perl v5.36.3 2023-02-15 IO::Poll(3p)