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=encoding utf8 =head1 NAME POSIX::1003::Events - POSIX for the file-system =head1 SYNOPSIS use POSIX::1003::Events; =head1 DESCRIPTION =head1 FUNCTIONS =head2 Standard POSIX =over 4 =item B<FD_CLR>($fd, $set) Remove the file descriptor $fd from the $set. If $fd is not a member of this set, there shall be no effect on the set, nor will an error be returned. =item B<FD_ISSET>($fd, $set) Returns true if the file descriptor $fd is a member of the $set =item B<FD_SET>($fd, $set) Add the file descriptor $fd to the $set If the file descriptor $fd is already in this set, there is no effect on the set, nor will an error be returned. =item B<FD_ZERO>($set) Clear the set =item B<poll>( HASH, [$timeout] ) If $timeout is not defined, the poll will wait until something happend. When C<undef> is returned, then there is an error. With an empy HASH returned, then the poll timed out. Otherwise, the returned HASH contains the FDs where something happened. =item B<select>( $rbits, $wbits, $ebits, [$timeout] ) Perl core contains two functions named C<select>. The second is the one we need here. Without $timeout, the select will wait until an event emerges (or an interrupt). In the example below, C<$rin> is a bit-set indicating on which file-descriptors should be listed for read events (I<data available>) and C<$rout> is a sub-set of that. The bit-sets can be manipulated with the C<FD_*> functions also exported by this module. my ($nfound, $timeleft) = select($rout=$rin, $wout=$win, $eout=$ein, $timeout); my $nfound = select($rout=$rin, $wout=$win, $eout=$ein); The C<select> interface is inefficient when used with many filehandles. You can better use L<poll()|POSIX::1003::Events/"Standard POSIX">. =back =head2 Additional =over 4 =item B<events_names>() Returns a list with all known names, unsorted. =back =head1 CONSTANTS The following constants where detected on your system when the module got installed. The second column shows the value which where returned at that time. =for comment #TABLE_POLL_START If you install the module, the table will be filled-in here =for comment #TABLE_POLL_END =head1 SEE ALSO This module is part of POSIX-1003 distribution version 1.02, built on November 10, 2020. Website: F<http://perl.overmeer.net/CPAN>. The code is based on L<POSIX>, which is released with Perl itself. See also L<POSIX::Util> for additional functionality. =head1 COPYRIGHTS Copyrights 2011-2020 on the perl code and the related documentation by [Mark Overmeer]. For other contributors see ChangeLog. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See F<http://dev.perl.org/licenses/>
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