io::poll(3)

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(2), 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.