IO::Poll − Object interface to system poll call
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);
"IO::Poll" is a simple interface to the system level poll routine.
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"
poll(2), IO::Handle, IO::Select
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs at <https://github.com/Perl/perl5/issues>.
Copyright (c) 1997−8 Graham Barr <[email protected]>. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.