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1 | package Catalyst::Restarter::Forking; |
2 | |
3 | use Moose; |
4 | |
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5 | extends 'Catalyst::Restarter'; |
6 | |
7 | has _child => ( |
8 | is => 'rw', |
9 | isa => 'Int', |
10 | ); |
11 | |
12 | |
13 | sub _fork_and_start { |
14 | my $self = shift; |
15 | |
16 | if ( my $pid = fork ) { |
17 | $self->_child($pid); |
18 | } |
19 | else { |
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20 | # Only the parent process needs to watch for changes, so the child |
21 | # should release any resources held by the watcher: |
22 | $self->_clear_watcher; |
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23 | $self->start_sub->(); |
24 | } |
25 | } |
26 | |
27 | sub _kill_child { |
28 | my $self = shift; |
29 | |
30 | return unless $self->_child; |
31 | |
32 | return unless kill 0, $self->_child; |
33 | |
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34 | die "Cannot send INT signal to ", $self->_child, ": $!" |
35 | unless kill 'INT', $self->_child; |
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36 | # If we don't wait for the child to exit, we could attempt to |
37 | # start a new server before the old one has given up the port it |
38 | # was listening on. |
39 | wait; |
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40 | } |
41 | |
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42 | __PACKAGE__->meta->make_immutable; |
43 | |
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44 | 1; |
36ff1319 |
45 | |
46 | __END__ |
47 | |
48 | =head1 NAME |
49 | |
50 | Catalyst::Restarter::Forking - Forks and restarts the child process |
51 | |
52 | =head1 DESCRIPTION |
53 | |
54 | This class forks and runs the server in a child process. When it needs |
55 | to restart, it kills the child and creates a new one. |
56 | |
57 | =head1 SEE ALSO |
58 | |
59 | L<Catalyst::Restarter>, L<Catalyst>, <File::ChangeNotify> |
60 | |
61 | =head1 AUTHORS |
62 | |
63 | Catalyst Contributors, see Catalyst.pm |
64 | |
65 | =head1 COPYRIGHT |
66 | |
67 | This program is free software, you can redistribute it and/or modify |
68 | it under the same terms as Perl itself. |
69 | |
70 | =cut |