1 |
root |
1.1 |
=head1 NAME |
2 |
|
|
|
3 |
|
|
EV::Loop::Async - run an EV event loop asynchronously |
4 |
|
|
|
5 |
|
|
=head1 SYNOPSIS |
6 |
|
|
|
7 |
|
|
use EV::Loop::Async; |
8 |
|
|
|
9 |
|
|
=head1 DESCRIPTION |
10 |
|
|
|
11 |
|
|
TODO. |
12 |
|
|
|
13 |
|
|
=over 4 |
14 |
|
|
|
15 |
|
|
=cut |
16 |
|
|
|
17 |
|
|
package EV::Loop::Async; |
18 |
|
|
|
19 |
|
|
use common::sense; |
20 |
|
|
|
21 |
|
|
use EV (); |
22 |
|
|
use Async::Interrupt (); |
23 |
|
|
|
24 |
|
|
use base 'EV::Loop'; |
25 |
|
|
|
26 |
|
|
BEGIN { |
27 |
|
|
our $VERSION = '0.02'; |
28 |
|
|
|
29 |
|
|
require XSLoader; |
30 |
|
|
XSLoader::load ("EV::Loop::Async", $VERSION); |
31 |
|
|
} |
32 |
|
|
|
33 |
|
|
=item $loop = EV::Loop::Async::default |
34 |
|
|
|
35 |
|
|
Return the default loop, usable by all programs. The default loop will be |
36 |
|
|
created on the first call to C<default> by calling X<new EV::Loop>, and |
37 |
|
|
should be used by all programs unless they have special requirements. |
38 |
|
|
|
39 |
|
|
=cut |
40 |
|
|
|
41 |
|
|
our ($LOOP, $ASYNC); |
42 |
|
|
|
43 |
|
|
sub default() { |
44 |
|
|
$LOOP || do { |
45 |
|
|
$LOOP = new EV::Loop::Async; |
46 |
|
|
# $ASYNC = $LOOP->async; |
47 |
|
|
|
48 |
|
|
$LOOP |
49 |
|
|
} |
50 |
|
|
} |
51 |
|
|
|
52 |
|
|
|
53 |
|
|
=item $loop = new EV::Loop $flags, [Async-Interrupt-Arguments...] |
54 |
|
|
|
55 |
|
|
This constructor: |
56 |
|
|
|
57 |
|
|
=over 4 |
58 |
|
|
|
59 |
|
|
=item 1. creates a new C<EV::Loop> (similar C<new EV::Loop>). |
60 |
|
|
|
61 |
|
|
=item 2. creates a new L<Async::Interrupt> object and attaches itself to it. |
62 |
|
|
|
63 |
|
|
=item 3. locks the loop (see below). |
64 |
|
|
|
65 |
|
|
=item 4. creates a new background thread. |
66 |
|
|
|
67 |
|
|
=item 5. runs C<< $loop->run >> in that thread. |
68 |
|
|
|
69 |
|
|
=back |
70 |
|
|
|
71 |
|
|
=cut |
72 |
|
|
|
73 |
|
|
sub new { |
74 |
|
|
my ($class, $flags, @asy) = @_; |
75 |
|
|
|
76 |
|
|
my $self = bless $class->SUPER::new ($flags), $class; |
77 |
|
|
my ($c_func, $c_arg) = _c_func $self; |
78 |
|
|
my $asy = new Async::Interrupt @asy, c_cb => [$c_func, $c_arg]; |
79 |
|
|
$self->_attach ($asy, $asy->signal_func); |
80 |
|
|
|
81 |
|
|
$self |
82 |
|
|
} |
83 |
|
|
|
84 |
|
|
=item $loop->nudge |
85 |
|
|
|
86 |
|
|
Wake up the asynchronous loop. This is useful after registering a new |
87 |
|
|
watcher, to ensure that the background event loop integrates the new |
88 |
|
|
watcher(s) (which only happens when it iterates, which you can force by |
89 |
|
|
calling this method). |
90 |
|
|
|
91 |
|
|
Without calling this method, the event loop I<eventually> takes notice |
92 |
|
|
of new watchers, bit when this happens is not wlel-defined (can be |
93 |
|
|
instantaneous, or take a few hours). |
94 |
|
|
|
95 |
|
|
No locking is required. |
96 |
|
|
|
97 |
|
|
Example: lock the loop, create a timer, nudge the loop so it takes notice |
98 |
|
|
of the new timer, then evily busy-wait till the timer fires. |
99 |
|
|
|
100 |
|
|
my $timer; |
101 |
|
|
my $flag; |
102 |
|
|
|
103 |
|
|
{ |
104 |
|
|
$loop->scope_lock; |
105 |
|
|
$timer = $loop->timer (1, 0, sub { $flag = 1 }); |
106 |
|
|
$loop->nudge; |
107 |
|
|
} |
108 |
|
|
|
109 |
|
|
1 until $flag; |
110 |
|
|
|
111 |
|
|
=head1 SEE ALSO |
112 |
|
|
|
113 |
|
|
L<EV>, L<Async::Interrupt>. |
114 |
|
|
|
115 |
|
|
=head1 AUTHOR |
116 |
|
|
|
117 |
|
|
Marc Lehmann <schmorp@schmorp.de> |
118 |
|
|
http://home.schmorp.de/ |
119 |
|
|
|
120 |
|
|
=cut |
121 |
|
|
|
122 |
|
|
1 |
123 |
|
|
|