IO::Poll - Online Linux Manual PageSection : 3pm
Updated : 2023-01-19
Source : perl v5.36.0
Note : Perl Programmers Reference Guide
NAMEIO::Poll − Object interface to system poll call
SYNOPSIS 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);
DESCRIPTIONIO::Poll is a simple interface to the system level poll routine.
METHODSmask ( 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
SEE ALSOpoll (2), IO::Handle, IO::Select
AUTHORGraham Barr. Currently maintained by the Perl Porters. Please report all bugs at <https://github.com/Perl/perl5/issues>.
COPYRIGHTCopyright (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. 0
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