IO::Poll - Object interface to system poll call
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IO::Poll - Object interface to system poll call
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);
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 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
poll(2), the IO::Handle manpage, the IO::Select manpage
Graham Barr. Currently maintained by the Perl Porters. Please report all
bugs to <perl5-porters@perl.org>.
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.
IO::Poll - Object interface to system poll call
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