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MAN page from CentOS 8 perl-IO-1.40-452.module_el8.4.0+646+45e06e4a.x86_64.rpm

IO::Poll

Section: Perl Programmers Reference Guide (3pm)
Updated: 2019-10-24
Index 

NAME

IO::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);
 

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 thelist of file descriptors and the next call to poll will check forany event specified in EVENT_MASK. If EVENT_MASK is zero then IO will beremoved from the list of file descriptors.

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

poll ( [ TIMEOUT ] )
Call the system level poll routine. If TIMEOUT is not specified then thecall will block. Returns the number of handles which had eventshappen, or -1 on error.
events ( IO )
Returns the event mask which represents the events that happened on IOduring 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 allhandles known will be returned. If EVENT_MASK is given then a listof handles will be returned which had one of the events specified byEVENT_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 allbugs to <perlbugAATTperl.org>. 

COPYRIGHT

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


 

Index

NAME
SYNOPSIS
DESCRIPTION
METHODS
SEE ALSO
AUTHOR
COPYRIGHT

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