IO::Poll(l)  Perl Programmers Reference Guide IO::Poll(l)



NAME
       IO::Poll - Object interface to system poll call

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

           $poll = new IO::Poll;

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

           $poll->poll($timeout);

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


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

METHODS
       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 happend 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"

SEE ALSO
       poll(l), IO::Handle, IO::Select

AUTHOR
       Graham Barr. Currently maintained by the Perl Porters.
       Please report all bugs to <perl5-porters@perl.org>.

COPYRIGHT
       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 v5.6.1                 2001-03-03            IO::Poll(l)