1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | AnyEvent::MP::Node - a single processing node (CPU/process...) |
3 | AnyEvent::MP::Node - represent a node |
4 | |
4 | |
5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | use AnyEvent::MP::Node; |
7 | use AnyEvent::MP::Node; |
8 | |
8 | |
9 | =head1 DESCRIPTION |
9 | =head1 DESCRIPTION |
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10 | |
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11 | This is an internal utility module, horrible to look at, so don't. |
10 | |
12 | |
11 | =cut |
13 | =cut |
12 | |
14 | |
13 | package AnyEvent::MP::Node; |
15 | package AnyEvent::MP::Node; |
14 | |
16 | |
… | |
… | |
19 | use AnyEvent::Socket (); |
21 | use AnyEvent::Socket (); |
20 | |
22 | |
21 | use AnyEvent::MP::Transport (); |
23 | use AnyEvent::MP::Transport (); |
22 | |
24 | |
23 | sub new { |
25 | sub new { |
24 | my ($self, $noderef) = @_; |
26 | my ($self, $id) = @_; |
25 | |
27 | |
26 | $self = bless { noderef => $noderef }, $self; |
28 | $self = bless { id => $id }, $self; |
27 | |
29 | |
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30 | $self->init; |
28 | $self->transport_reset; |
31 | $self->transport_reset; |
29 | |
32 | |
30 | $self |
33 | $self |
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34 | } |
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35 | |
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36 | sub init { |
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37 | # |
31 | } |
38 | } |
32 | |
39 | |
33 | sub send { |
40 | sub send { |
34 | &{ shift->{send} } |
41 | &{ shift->{send} } |
35 | } |
42 | } |
36 | |
43 | |
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44 | # nodes reachable via the network |
37 | package AnyEvent::MP::Node::External; |
45 | package AnyEvent::MP::Node::External; |
38 | |
46 | |
39 | use base "AnyEvent::MP::Node"; |
47 | use base "AnyEvent::MP::Node"; |
40 | |
48 | |
41 | # called at init time, mostly sets {send} |
49 | # called at init time, mostly sets {send} |
… | |
… | |
48 | |
56 | |
49 | $self->{send} = sub { |
57 | $self->{send} = sub { |
50 | push @{$self->{queue}}, shift; |
58 | push @{$self->{queue}}, shift; |
51 | $self->connect; |
59 | $self->connect; |
52 | }; |
60 | }; |
53 | |
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54 | $self->connect |
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55 | if $self->{autoconnect}; |
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56 | } |
61 | } |
57 | |
62 | |
58 | # called only after successful handshake |
63 | # called each time we fail to establish a connection, |
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64 | # or the existing connection failed |
59 | sub transport_error { |
65 | sub transport_error { |
60 | my ($self, @reason) = @_; |
66 | my ($self, @reason) = @_; |
61 | |
67 | |
62 | my $no_transport = !$self->{transport}; |
68 | my $no_transport = !$self->{transport}; |
63 | |
69 | |
64 | delete $self->{connect_w}; |
70 | delete $self->{connect_w}; |
65 | delete $self->{connect_to}; |
71 | delete $self->{connect_to}; |
66 | |
72 | |
67 | delete $self->{queue}; |
73 | delete $self->{queue}; |
68 | $self->transport_reset; |
74 | $self->transport_reset; |
69 | |
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70 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
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71 | unless $no_transport; |
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72 | |
75 | |
73 | if (my $mon = delete $self->{lmon}) { |
76 | if (my $mon = delete $self->{lmon}) { |
74 | $_->(@reason) for map @$_, values %$mon; |
77 | $_->(@reason) for map @$_, values %$mon; |
75 | } |
78 | } |
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79 | |
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80 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
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81 | unless $no_transport; |
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82 | |
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83 | # if we are here and are idle, we nuke ourselves |
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84 | delete $AnyEvent::MP::Kernel::NODE{$self->{id}} |
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85 | unless $self->{transport} || $self->{connect_to}; |
76 | } |
86 | } |
77 | |
87 | |
78 | # called after handshake was successful |
88 | # called after handshake was successful |
79 | sub transport_connect { |
89 | sub transport_connect { |
80 | my ($self, $transport) = @_; |
90 | my ($self, $transport) = @_; |
81 | |
91 | |
82 | # first connect with a master node |
92 | delete $self->{trial}; |
83 | $AnyEvent::MP::Kernel::SLAVE->($self) |
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84 | if ref $AnyEvent::MP::Kernel::SLAVE; |
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85 | |
93 | |
86 | $self->transport_error (transport_error => "switched connections") |
94 | $self->transport_error (transport_error => "switched connections") |
87 | if $self->{transport}; |
95 | if $self->{transport}; |
88 | |
96 | |
89 | delete $self->{connect_w}; |
97 | delete $self->{connect_w}; |
… | |
… | |
102 | $transport->send ($_) |
110 | $transport->send ($_) |
103 | for @{ delete $self->{queue} || [] }; |
111 | for @{ delete $self->{queue} || [] }; |
104 | } |
112 | } |
105 | |
113 | |
106 | sub connect { |
114 | sub connect { |
107 | my ($self) = @_; |
115 | my ($self, @addresses) = @_; |
108 | |
116 | |
109 | return if $self->{transport}; |
117 | return if $self->{transport}; |
110 | |
118 | |
111 | Scalar::Util::weaken $self; |
119 | Scalar::Util::weaken $self; |
112 | |
120 | |
113 | $self->{connect_to} ||= AE::timer |
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114 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
121 | my $monitor = $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT; |
115 | 0, |
122 | |
116 | sub { |
123 | $self->{connect_to} ||= AE::timer $monitor, 0, sub { |
117 | $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); |
124 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
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125 | }; |
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126 | |
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127 | return unless @addresses; |
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128 | return if $self->{connect_w}; |
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129 | |
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130 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); |
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131 | |
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132 | my $interval = $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL; |
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133 | |
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134 | $interval = ($monitor - $interval) / @addresses |
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135 | if ($monitor - $interval) / @addresses < $interval; |
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136 | |
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137 | $interval = 0.4 if $interval < 0.4; |
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138 | |
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139 | my @endpoints; |
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140 | |
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141 | $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub { |
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142 | @endpoints = @addresses |
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143 | unless @endpoints; |
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144 | |
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145 | my $endpoint = shift @endpoints; |
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146 | |
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147 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
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148 | |
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149 | $self->{trial}{$endpoint} ||= do { |
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150 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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151 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
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152 | |
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153 | AnyEvent::MP::Transport::mp_connect |
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154 | $host, $port, |
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155 | sub { delete $self->{trial}{$endpoint} }, |
118 | }; |
156 | }; |
119 | |
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120 | unless ($self->{connect_w}) { |
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121 | my @endpoints; |
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122 | my %trial; |
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123 | |
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124 | $self->{connect_w} = AE::timer |
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125 | rand, |
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126 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
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127 | sub { |
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128 | @endpoints = split /,/, $self->{noderef} |
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129 | unless @endpoints; |
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130 | |
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131 | my $endpoint = shift @endpoints; |
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132 | |
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133 | $trial{$endpoint} ||= do { |
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134 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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135 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{noderef}: not a resolved node reference."); |
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136 | |
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137 | AnyEvent::MP::Transport::mp_connect |
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138 | $host, $port, |
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139 | sub { delete $trial{$endpoint} } |
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140 | ; |
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141 | }; |
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142 | } |
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143 | ; |
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144 | } |
157 | }; |
145 | } |
158 | } |
146 | |
159 | |
147 | sub kill { |
160 | sub kill { |
148 | my ($self, $port, @reason) = @_; |
161 | my ($self, $port, @reason) = @_; |
149 | |
162 | |
… | |
… | |
173 | $self->send (["", mon0 => $portid]); |
186 | $self->send (["", mon0 => $portid]); |
174 | delete $self->{monitor}{$portid}; |
187 | delete $self->{monitor}{$portid}; |
175 | } |
188 | } |
176 | } |
189 | } |
177 | |
190 | |
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191 | # used for direct slave connections as well |
178 | package AnyEvent::MP::Node::Direct; |
192 | package AnyEvent::MP::Node::Direct; |
179 | |
193 | |
180 | use base "AnyEvent::MP::Node::External"; |
194 | use base "AnyEvent::MP::Node::External"; |
181 | |
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182 | package AnyEvent::MP::Node::Indirect; |
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183 | |
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184 | use base "AnyEvent::MP::Node::Direct"; |
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185 | |
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186 | sub master { |
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187 | my ($self) = @_; |
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188 | |
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189 | my (undef, $master) = split /\@/, $self->{noderef}, 2; |
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190 | $master =~ s/!/,/g; |
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191 | $master |
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192 | } |
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193 | |
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194 | sub transport_reset { |
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195 | my ($self) = @_; |
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196 | |
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197 | if ($self->{transport}) { |
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198 | # as an optimisation, immediately nuke slave nodes |
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199 | delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}}; |
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200 | } else { |
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201 | $self->SUPER::transport_reset; |
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202 | return;#d##TODO# |
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203 | |
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204 | my $noderef = $self->{noderef}; |
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205 | my $master = $self->master; |
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206 | |
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207 | # slave nodes are so cool - we can always send to them :) |
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208 | |
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209 | $self->{send} = sub { |
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210 | $self->connect; |
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211 | snd $master, snd => $noderef, @_; |
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212 | }; |
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213 | } |
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214 | } |
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215 | |
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216 | sub connect { |
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217 | my ($self) = @_; |
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218 | |
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219 | #TODO# |
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220 | # # ask for a connection, #TODO# rate-limit this somehow |
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221 | # snd $self->master, relay => $self->{noderef}, connect_node => $AnyEvent::MP::Kernel::NODE; |
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222 | } |
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223 | |
195 | |
224 | package AnyEvent::MP::Node::Self; |
196 | package AnyEvent::MP::Node::Self; |
225 | |
197 | |
226 | use base "AnyEvent::MP::Node"; |
198 | use base "AnyEvent::MP::Node"; |
227 | |
199 | |
… | |
… | |
238 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
210 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
239 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
211 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
240 | }; |
212 | }; |
241 | } |
213 | } |
242 | |
214 | |
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215 | sub transport_connect { |
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216 | my ($self, $tp) = @_; |
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217 | |
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218 | $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); |
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219 | } |
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220 | |
243 | sub kill { |
221 | sub kill { |
244 | my ($self, $port, @reason) = @_; |
222 | my ($self, $port, @reason) = @_; |
245 | |
223 | |
246 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
224 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
247 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
225 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
248 | |
226 | |
249 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
227 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
250 | or !@reason |
228 | or !@reason |
251 | or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); |
229 | or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason"); |
252 | |
230 | |
253 | $_->(@reason) for values %$mon; |
231 | $_->(@reason) for values %$mon; |
254 | } |
232 | } |
255 | |
233 | |
256 | sub monitor { |
234 | sub monitor { |