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package Sprocket::AIO; |
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47
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use Fcntl; |
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14
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8
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3217
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4
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50
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use POE; |
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5
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2825
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use Carp qw( croak ); |
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431
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use strict; |
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248
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52
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use warnings; |
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664
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10
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our $sprocket_aio; |
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BEGIN { |
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559
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eval "use IO::AIO qw( poll_fileno poll_cb 2 )"; |
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4022
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0
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0
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0
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0
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50
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41
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if ( $@ ) { |
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1066
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eval 'sub HAS_AIO () { 0 }'; |
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} else { |
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0
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0
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eval 'sub HAS_AIO () { 1 }'; |
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} |
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} |
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21
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sub import { |
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35
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my ( $class, $args ) = @_; |
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34
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my $package = caller(); |
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25
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13
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50
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33
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79
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croak "Sprocket::AIO expects its arguments in a hash ref" |
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if ( $args && ref( $args ) ne 'HASH' ); |
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28
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50
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60
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unless ( delete $args->{no_auto_export} ) { |
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{ |
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54
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no strict 'refs'; |
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8
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12642
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13
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29
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31
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*{ $package . '::sprocket_aio' } = \$sprocket_aio; |
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65
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32
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} |
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} |
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35
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370
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return if ( !HAS_AIO || delete $args->{no_auto_bootstrap} ); |
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37
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# bootstrap |
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# XXX I don't like this, let's find another way |
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0
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eval( qq| |
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package $package; |
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use IO::AIO 2; |
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sub plugin_start_aio { |
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Sprocket::AIO->new( parent_id => shift->parent_id ); |
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} |
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| ); |
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0
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0
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croak "could not import AIO into $package : $@" |
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if ( $@ ); |
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49
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0
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return; |
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} |
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52
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sub new { |
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0
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0
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0
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my $class = shift; |
54
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0
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0
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return $sprocket_aio if ( $sprocket_aio ); |
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56
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0
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return undef unless ( HAS_AIO ); |
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58
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0
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0
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my $self = $sprocket_aio = bless({ |
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session_id => undef, |
60
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watch_fork_delay => 2, |
61
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@_, |
62
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pid => $$, |
63
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}, ref $class || $class ); |
64
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65
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0
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0
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return $self unless ( $self->{parent_id} ); |
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67
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0
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POE::Session->create( |
68
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object_states => [ |
69
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$self => { |
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_start => '_start', |
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_stop => '_stop', |
72
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poll_cb => 'poll_cb', |
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watch_aio => 'watch_aio', |
74
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watch_fork => 'watch_fork', |
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shutdown => '_shutdown', |
76
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restart => '_restart', |
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}, |
78
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], |
79
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); |
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81
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0
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return $self; |
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} |
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84
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sub _start { |
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0
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0
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my ( $self, $kernel, $session ) = @_[ OBJECT, KERNEL, SESSION ]; |
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87
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0
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$self->{session_id} = $session->ID(); |
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0
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$kernel->alias_set( "$self" ); |
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0
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$kernel->call( $session => 'watch_aio' ); |
90
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91
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0
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0
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$kernel->delay_set( watch_fork => $self->{watch_fork_delay} ) |
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if ( $self->{watch_for_fork} ); |
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94
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0
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$self->_log( v => 2, msg => 'AIO support module started' ); |
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96
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0
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return; |
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} |
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99
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sub watch_aio { |
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0
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0
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0
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my ( $self, $kernel ) = @_[ OBJECT, KERNEL ]; |
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102
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# eval here because poll_fileno isn't imported when IO::AIO isn't installed |
103
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0
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open( my $fh, "<&=".eval "poll_fileno()" ); |
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#or die "error during open in watch_aio $!"; |
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0
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$kernel->select_read( $fh, 'poll_cb' ); |
106
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0
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$self->{fh} = $fh; |
107
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108
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# save our pid for watch_fork |
109
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0
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$self->{pid} = $$; |
110
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111
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0
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return; |
112
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} |
113
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114
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sub watch_fork { |
115
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0
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0
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0
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my ( $self, $kernel ) = @_[ OBJECT, KERNEL ]; |
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117
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0
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0
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if ( $self->{pid} != $$ ) { |
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0
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$self->_log( v => 4, msg => 'fork detected, restarting aio' ); |
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0
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$kernel->call( $_[SESSION] => 'restart' ); |
120
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} |
121
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122
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0
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$kernel->delay_set( watch_fork => $self->{watch_fork_delay} ); |
123
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} |
124
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125
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sub _stop { |
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0
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0
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$_[ OBJECT ]->_log(v => 2, msg => 'stopped'); |
127
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} |
128
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129
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sub _log { |
130
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# TODO replace with $sprocket->log |
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0
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0
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$poe_kernel->call( shift->{parent_id} => _log => ( call => ( caller(1) )[ 3 ], @_ ) ); |
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} |
133
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134
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sub shutdown { |
135
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0
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0
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0
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my $self = shift; |
136
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0
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0
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return $self->{session_id} ? $poe_kernel->call( $self->{session_id} => shutdown => @_ ) : undef; |
137
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} |
138
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139
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sub _shutdown { |
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0
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0
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my ( $self, $kernel ) = @_[ OBJECT, KERNEL ]; |
141
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142
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0
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$kernel->alias_remove( "$self" ); |
143
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0
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$kernel->alarm_remove_all(); |
144
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0
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$kernel->select_read( delete $self->{fh} ); |
145
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0
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$sprocket_aio = undef; |
146
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147
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0
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return; |
148
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} |
149
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150
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sub restart { |
151
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0
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0
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0
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my $self = shift; |
152
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0
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0
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return unless ( $self->{session_id} ); |
153
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0
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return $poe_kernel->call( $self->{session_id} => restart => @_ ); |
154
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} |
155
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156
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sub _restart { |
157
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0
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0
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my ( $self, $kernel, $session ) = @_[ OBJECT, KERNEL, SESSION ]; |
158
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159
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0
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$kernel->select_read( delete $self->{fh} ); |
160
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0
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$kernel->call( $session, 'watch_aio' ); |
161
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162
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0
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$self->_log( v => 2, msg => 'AIO support module restarted' ); |
163
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164
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0
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return; |
165
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} |
166
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167
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1; |
168
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169
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__END__ |