Poll.pm revision 7c478bd95313f5f23a4c958a745db2134aa03244
# IO::Poll.pm
#
# Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
# modify it under the same terms as Perl itself.
use strict;
use Exporter ();
$VERSION = "0.05";
);
@EXPORT_OK = qw(
);
# [0] maps fd's to requested masks
# [1] maps fd's to returned masks
# [2] maps fd's to handles
sub new {
my $class = shift;
$self;
}
sub mask {
my $self = shift;
my $io = shift;
if (@_) {
my $mask = shift;
if($mask) {
} else {
}
}
}
sub poll {
$self->[1] = {};
my @poll = ();
$mask = 0;
}
return $ret
unless $ret > 0;
while(@poll) {
}
return $ret;
}
sub events {
my $self = shift;
my $io = shift;
: 0;
}
sub remove {
my $self = shift;
my $io = shift;
}
sub handles {
my $self = shift;
return values %{$self->[2]} unless @_;
my $events = shift || 0;
my @handles = ();
}
}
return @handles;
}
1;
=head1 NAME
IO::Poll - Object interface to system poll call
=head1 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);
=head1 DESCRIPTION
C<IO::Poll> is a simple interface to the system level poll routine.
=head1 METHODS
=over 4
=item 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.
=item 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.
=item events ( IO )
Returns the event mask which represents the events that happend on IO
during the last call to C<poll>.
=item remove ( IO )
Remove IO from the list of file descriptors for the next poll.
=item 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 C<poll>
=back
=head1 SEE ALSO
L<poll(2)>, L<IO::Handle>, L<IO::Select>
=head1 AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all
bugs to <perl5-porters@perl.org>.
=head1 COPYRIGHT
Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
modify it under the same terms as Perl itself.
=cut