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=head1 NAME |
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AnyEvent::Impl::Glib - AnyEvent adaptor for Glib |
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=head1 SYNOPSIS |
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|
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use AnyEvent; |
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use Glib; |
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|
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# this module gets loaded automatically as required |
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|
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=head1 DESCRIPTION |
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|
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This module provides transparent support for AnyEvent. You don't have to |
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do anything to make Glib work with AnyEvent except by loading Glib before |
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creating the first AnyEvent watcher. |
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|
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Glib is probably the most inefficient event loop that has ever seen the |
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light of the world: Glib not only scans all its watchers (really, ALL of |
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them, whether I/O-related, timer-related or what not) during each loop |
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iteration, it also does so multiple times and rebuilds the poll list for |
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the kernel each time again, dynamically even. |
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|
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On the positive side, and most importantly, Glib generally works |
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correctly, no quarrels there. |
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|
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If you create many watchers (as in: more than two), you might consider one |
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of the L<Glib::EV>, L<EV::Glib> or L<Glib::Event> modules that map Glib to |
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other, more efficient, event loops. |
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This module uses the default Glib main context for all its watchers. |
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=cut |
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package AnyEvent::Impl::Glib; |
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use AnyEvent (); BEGIN { AnyEvent::common_sense } |
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use Glib 1.210 (); # (stable 1.220 2009, also Glib 2.4+ required, 2004) |
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our $mainloop = Glib::MainContext->default; |
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|
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my %io_cond = ( |
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r => ["in" , "hup"], |
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w => ["out", "hup"], |
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); |
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|
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sub io { |
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my ($class, %arg) = @_; |
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|
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my $cb = $arg{cb}; |
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my $fd = fileno $arg{fh}; |
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defined $fd or $fd = $arg{fh}; |
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|
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my $source = add_watch Glib::IO |
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$fd, |
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$io_cond{$arg{poll}}, |
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sub { &$cb; 1 }; |
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|
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bless \\$source, $class |
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} |
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|
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sub timer { |
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my ($class, %arg) = @_; |
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|
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my $cb = $arg{cb}; |
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my $ival = $arg{interval} * 1000; |
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|
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my $source; $source = add Glib::Timeout $arg{after} < 0 ? 0 : $arg{after} * 1000, |
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$ival ? sub { |
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remove Glib::Source $source; |
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$source = add Glib::Timeout $ival, sub { &$cb; 1 }; |
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&$cb; |
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0 |
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} |
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: sub { &$cb; 0 }; |
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|
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bless \\$source, $class |
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} |
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|
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sub idle { |
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my ($class, %arg) = @_; |
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|
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my $cb = $arg{cb}; |
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my $source = add Glib::Idle sub { &$cb; 1 }; |
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|
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bless \\$source, $class |
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} |
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sub DESTROY { |
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remove Glib::Source $${$_[0]}; |
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} |
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our %pid_w; |
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our %pid_cb; |
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|
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sub child { |
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my ($class, %arg) = @_; |
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|
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$arg{pid} > 0 |
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or Carp::croak "Glib does not support watching for all pids (pid == 0) as attempted"; |
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my $pid = $arg{pid}; |
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my $cb = $arg{cb}; |
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$pid_cb{$pid}{$cb+0} = $cb; |
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$pid_w{$pid} ||= Glib::Child->watch_add ($pid, sub { |
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$_->($_[0], $_[1]) |
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for values %{ $pid_cb{$pid} }; |
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|
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1 |
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}); |
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|
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bless [$pid, $cb+0], "AnyEvent::Impl::Glib::child" |
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} |
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sub AnyEvent::Impl::Glib::child::DESTROY { |
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my ($pid, $icb) = @{ $_[0] }; |
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|
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delete $pid_cb{$pid}{$icb}; |
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unless (%{ $pid_cb{$pid} }) { |
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delete $pid_cb{$pid}; |
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remove Glib::Source delete $pid_w{$pid}; |
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} |
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} |
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#sub loop { |
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# # hackish, but we do not have a mainloop, just a maincontext |
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# $mainloop->iteration (1) while 1; |
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#} |
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|
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sub _poll { |
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$mainloop->iteration (1); |
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} |
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sub AnyEvent::CondVar::Base::_wait { |
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$mainloop->iteration (1) until exists $_[0]{_ae_sent}; |
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} |
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1; |
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=head1 SEE ALSO |
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|
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L<AnyEvent>, L<Glib>. |
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=head1 AUTHOR |
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|
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Marc Lehmann <schmorp@schmorp.de> |
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http://home.schmorp.de/ |
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=cut |
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|
