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1 | =head1 NAME |
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2 | |
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3 | AnyEvent::Impl::Glib - AnyEvent adaptor for Glib |
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4 | |
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5 | =head1 SYNOPSIS |
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6 | |
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7 | use AnyEvent; |
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8 | use Glib; |
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9 | |
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10 | # this module gets loaded automatically as required |
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11 | |
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12 | =head1 DESCRIPTION |
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13 | |
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14 | This module provides transparent support for AnyEvent. You don't have to |
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15 | do anything to make Glib work with AnyEvent except by loading Glib before |
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16 | creating the first AnyEvent watcher. |
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17 | |
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18 | Glib is probably the most inefficient event loop that has ever seen the |
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19 | light of the world: Glib not only scans all its watchers (really, ALL of |
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20 | them, whether I/O-related, timer-related or what not) during each loop |
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21 | iteration, it also does so multiple times and rebuilds the poll list for |
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22 | the kernel each time again, dynamically even. |
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23 | |
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24 | On the positive side, and most importantly, Glib generally works |
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25 | correctly, no quarrels there. |
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26 | |
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27 | If you create many watchers (as in: more than two), you might consider one |
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28 | of the L<Glib::EV>, L<EV::Glib> or L<Glib::Event> modules that map Glib to |
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29 | other, more efficient, event loops. |
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30 | |
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31 | This module uses the default Glib main context for all its watchers. |
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32 | |
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33 | =cut |
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34 | |
| 1 | package AnyEvent::Impl::Glib; |
35 | package AnyEvent::Impl::Glib; |
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36 | |
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37 | no warnings; |
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38 | use strict; |
| 2 | |
39 | |
| 3 | use Glib (); |
40 | use Glib (); |
| 4 | |
41 | |
| 5 | my $maincontext = Glib::MainContext->default; |
42 | our $mainloop = Glib::MainContext->default; |
| 6 | |
43 | |
| 7 | my %RWE = ( |
44 | my %io_cond = ( |
| 8 | in => 'r', |
45 | r => ["in" , "hup"], |
| 9 | out => 'w', |
46 | w => ["out", "hup"], |
| 10 | pri => 'e', |
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| 11 | ); |
47 | ); |
| 12 | |
48 | |
| 13 | sub io { |
49 | sub io { |
| 14 | my ($class, %arg) = @_; |
50 | my ($class, %arg) = @_; |
| 15 | |
51 | |
| 16 | my $self = \%arg, $class; |
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| 17 | my $rcb = \$self->{cb}; |
52 | my $cb = $arg{cb}; |
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53 | my $fd = fileno $arg{fh}; |
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54 | defined $fd or $fd = $arg{fh}; |
| 18 | |
55 | |
| 19 | my @cond; |
56 | my $source = add_watch Glib::IO |
| 20 | push @cond, "in" if $self->{poll} =~ /r/i; |
57 | $fd, |
| 21 | push @cond, "out" if $self->{poll} =~ /w/i; |
58 | $io_cond{$arg{poll}}, |
| 22 | push @cond, "pri" if $self->{poll} =~ /e/i; |
59 | sub { &$cb; 1 }; |
| 23 | |
60 | |
| 24 | $self->{source} = add_watch Glib::IO fileno $self->{fh}, \@cond, sub { |
61 | bless \\$source, $class |
| 25 | $$rcb->(join "", map $RWE{$_}, @{ $_[1] }); |
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| 26 | ! ! $$rcb |
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| 27 | }; |
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| 28 | |
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| 29 | $self |
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| 30 | } |
62 | } |
| 31 | |
63 | |
| 32 | sub timer { |
64 | sub timer { |
| 33 | my ($class, %arg) = @_; |
65 | my ($class, %arg) = @_; |
| 34 | |
66 | |
| 35 | my $self = \%arg, $class; |
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| 36 | my $cb = $self->{cb}; |
67 | my $cb = $arg{cb}; |
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68 | my $ival = $arg{interval} * 1000; |
| 37 | |
69 | |
| 38 | $self->{source} = add Glib::Timeout $self->{after} * 1000, sub { |
70 | my $source; $source = add Glib::Timeout $arg{after} * 1000, |
| 39 | $cb->(); |
71 | $ival ? sub { |
| 40 | 0 |
72 | remove Glib::Source $source; |
| 41 | }; |
73 | $source = add Glib::Timeout $ival, sub { &$cb; 1 }; |
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74 | &$cb; |
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75 | 0 |
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76 | } |
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77 | : sub { &$cb; 0 }; |
| 42 | |
78 | |
| 43 | $self |
79 | bless \\$source, $class |
| 44 | } |
80 | } |
| 45 | |
81 | |
| 46 | sub cancel { |
82 | sub idle { |
| 47 | my ($self) = @_; |
83 | my ($class, %arg) = @_; |
| 48 | |
84 | |
| 49 | return unless HASH:: eq ref $self; |
85 | my $cb = $arg{cb}; |
| 50 | |
86 | my $source = add Glib::Idle sub { &$cb; 1 }; |
| 51 | remove Glib::Source delete $self->{source} if $self->{source}; |
87 | bless \\$source, $class |
| 52 | $self->{cb} = undef; |
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| 53 | delete $self->{cb}; |
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| 54 | } |
88 | } |
| 55 | |
89 | |
| 56 | sub DESTROY { |
90 | sub DESTROY { |
| 57 | my ($self) = @_; |
91 | remove Glib::Source $${$_[0]}; |
| 58 | |
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| 59 | $self->cancel; |
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| 60 | } |
92 | } |
| 61 | |
93 | |
| 62 | sub condvar { |
94 | sub one_event { |
| 63 | my $class = shift; |
95 | $mainloop->iteration (1); |
| 64 | |
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| 65 | bless \my $x, $class; |
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| 66 | } |
96 | } |
| 67 | |
97 | |
| 68 | sub broadcast { |
98 | sub loop { |
| 69 | ${$_[0]}++ |
99 | # hackish, but we do not have a mainloop, just a maincontext |
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100 | $mainloop->iteration (1) while 1; |
| 70 | } |
101 | } |
| 71 | |
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| 72 | sub wait { |
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| 73 | $maincontext->iteration (1) while !${$_[0]}; |
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| 74 | } |
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| 75 | |
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| 76 | $AnyEvent::MODEL = __PACKAGE__; |
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| 77 | |
102 | |
| 78 | 1; |
103 | 1; |
| 79 | |
104 | |
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105 | =head1 SEE ALSO |
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106 | |
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107 | L<AnyEvent>, L<Glib>. |
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108 | |
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109 | =head1 AUTHOR |
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110 | |
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111 | Marc Lehmann <schmorp@schmorp.de> |
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112 | http://home.schmorp.de/ |
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113 | |
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114 | =cut |
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115 | |
