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 | |
… | |
… | |
33 | |
35 | |
34 | sub init { |
36 | sub init { |
35 | # |
37 | # |
36 | } |
38 | } |
37 | |
39 | |
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40 | #d# only needed for bad global code at the moment |
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41 | sub transport_error { |
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42 | } |
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43 | |
38 | sub send { |
44 | sub send { |
39 | &{ shift->{send} } |
45 | &{ shift->{send} } |
40 | } |
46 | } |
41 | |
47 | |
42 | # nodes reachable via the network |
48 | # nodes reachable via the network |
43 | package AnyEvent::MP::Node::External; |
49 | package AnyEvent::MP::Node::Remote; |
44 | |
50 | |
45 | use base "AnyEvent::MP::Node"; |
51 | use base "AnyEvent::MP::Node"; |
46 | |
52 | |
47 | # called at init time, mostly sets {send} |
53 | # called at init time, mostly sets {send} |
48 | sub transport_reset { |
54 | sub transport_reset { |
… | |
… | |
54 | |
60 | |
55 | $self->{send} = sub { |
61 | $self->{send} = sub { |
56 | push @{$self->{queue}}, shift; |
62 | push @{$self->{queue}}, shift; |
57 | $self->connect; |
63 | $self->connect; |
58 | }; |
64 | }; |
59 | |
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60 | $self->connect |
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61 | if $self->{autoconnect}; |
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62 | } |
65 | } |
63 | |
66 | |
64 | # called only after successful handshake |
67 | # called each time we fail to establish a connection, |
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68 | # or the existing connection failed |
65 | sub transport_error { |
69 | sub transport_error { |
66 | my ($self, @reason) = @_; |
70 | my ($self, @reason) = @_; |
67 | |
71 | |
68 | my $no_transport = !$self->{transport}; |
72 | my $no_transport = !$self->{transport}; |
69 | |
73 | |
… | |
… | |
71 | delete $self->{connect_to}; |
75 | delete $self->{connect_to}; |
72 | |
76 | |
73 | delete $self->{queue}; |
77 | delete $self->{queue}; |
74 | $self->transport_reset; |
78 | $self->transport_reset; |
75 | |
79 | |
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80 | if (my $mon = delete $self->{lmon}) { |
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81 | $_->(@reason) for map @$_, values %$mon; |
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82 | } |
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83 | |
76 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
84 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
77 | unless $no_transport; |
85 | unless $no_transport; |
78 | |
86 | |
79 | if (my $mon = delete $self->{lmon}) { |
87 | # if we are here and are idle, we nuke ourselves |
80 | $_->(@reason) for map @$_, values %$mon; |
88 | delete $AnyEvent::MP::Kernel::NODE{$self->{id}} |
81 | } |
89 | unless $self->{transport} || $self->{connect_to}; |
82 | } |
90 | } |
83 | |
91 | |
84 | # called after handshake was successful |
92 | # called after handshake was successful |
85 | sub transport_connect { |
93 | sub transport_connect { |
86 | my ($self, $transport) = @_; |
94 | my ($self, $transport) = @_; |
87 | |
95 | |
88 | delete $self->{trial}; |
96 | delete $self->{trial}; |
89 | |
97 | |
90 | $self->transport_error (transport_error => "switched connections") |
98 | $self->transport_error (transport_error => $self->{id}, "switched connections") |
91 | if $self->{transport}; |
99 | if $self->{transport}; |
92 | |
100 | |
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101 | delete $self->{connect_addr}; |
93 | delete $self->{connect_w}; |
102 | delete $self->{connect_w}; |
94 | delete $self->{connect_to}; |
103 | delete $self->{connect_to}; |
95 | |
104 | |
96 | $self->{transport} = $transport; |
105 | $self->{transport} = $transport; |
97 | |
106 | |
98 | my $transport_send = $transport->can ("send"); |
107 | my $transport_send = $transport->{send}; |
99 | |
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100 | $self->{send} = sub { |
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101 | $transport_send->($transport, $_[0]); |
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102 | }; |
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103 | |
108 | |
104 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
109 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
105 | |
110 | |
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111 | $self->{send} = $transport_send; |
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112 | |
106 | $transport->send ($_) |
113 | $transport_send->($_) |
107 | for @{ delete $self->{queue} || [] }; |
114 | for @{ delete $self->{queue} || [] }; |
108 | } |
115 | } |
109 | |
116 | |
110 | sub connect { |
117 | sub connect { |
111 | my ($self, @addresses) = @_; |
118 | my ($self) = @_; |
112 | |
119 | |
113 | return if $self->{transport}; |
120 | return if $self->{transport}; |
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121 | return if $self->{connect_w}; |
114 | |
122 | |
115 | Scalar::Util::weaken $self; |
123 | Scalar::Util::weaken $self; |
116 | |
124 | |
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125 | my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
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126 | |
117 | $self->{connect_to} ||= AE::timer |
127 | $self->{connect_to} ||= AE::timer $monitor, 0, sub { |
118 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
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119 | 0, |
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120 | sub { |
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121 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
128 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
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129 | }; |
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130 | |
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131 | # maybe @$addresses? |
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132 | my @addresses = @{ $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}} }; |
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133 | |
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134 | unless (@addresses) { |
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135 | # on global nodes, all bets are off now - we either know the node, or we don't |
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136 | unless ($AnyEvent::MP::Kernel::GLOBAL) { |
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137 | $self->{connect_w} = AnyEvent::MP::Kernel::global_req (g_find => $self->{id}); |
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138 | } |
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139 | return; |
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140 | } |
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141 | |
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142 | $self->{connect_addr} = \@addresses; # a bit weird, but efficient |
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143 | |
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144 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); |
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145 | |
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146 | my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; |
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147 | |
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148 | $interval = ($monitor - $interval) / @addresses |
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149 | if ($monitor - $interval) / @addresses < $interval; |
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150 | |
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151 | $interval = 0.4 if $interval < 0.4; |
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152 | |
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153 | my @endpoints; |
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154 | |
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155 | $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub { |
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156 | @endpoints = @addresses |
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157 | unless @endpoints; |
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158 | |
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159 | my $endpoint = shift @endpoints; |
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160 | |
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161 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
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162 | |
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163 | $self->{trial}{$endpoint} ||= do { |
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164 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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165 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
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166 | |
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167 | AnyEvent::MP::Transport::mp_connect |
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168 | $host, $port, |
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169 | sub { delete $self->{trial}{$endpoint} }, |
122 | }; |
170 | }; |
123 | |
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124 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); |
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125 | return unless @addresses; |
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126 | |
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127 | unless ($self->{connect_w}) { |
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128 | my @endpoints; |
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129 | |
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130 | $self->{connect_w} = AE::timer |
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131 | rand, |
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132 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
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133 | sub { |
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134 | @endpoints = @addresses |
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135 | unless @endpoints; |
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136 | |
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137 | my $endpoint = shift @endpoints; |
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138 | |
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139 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
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140 | |
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141 | $self->{trial}{$endpoint} ||= do { |
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142 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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143 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
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144 | |
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145 | AnyEvent::MP::Transport::mp_connect |
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146 | $host, $port, |
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147 | sub { delete $self->{trial}{$endpoint} }, |
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148 | }; |
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149 | } |
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150 | ; |
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151 | } |
171 | }; |
152 | } |
172 | } |
153 | |
173 | |
154 | sub kill { |
174 | sub kill { |
155 | my ($self, $port, @reason) = @_; |
175 | my ($self, $port, @reason) = @_; |
156 | |
176 | |
157 | $self->send (["", kil => $port, @reason]); |
177 | $self->{send} (["", kil => $port, @reason]); |
158 | } |
178 | } |
159 | |
179 | |
160 | sub monitor { |
180 | sub monitor { |
161 | my ($self, $portid, $cb) = @_; |
181 | my ($self, $portid, $cb) = @_; |
162 | |
182 | |
… | |
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180 | $self->send (["", mon0 => $portid]); |
200 | $self->send (["", mon0 => $portid]); |
181 | delete $self->{monitor}{$portid}; |
201 | delete $self->{monitor}{$portid}; |
182 | } |
202 | } |
183 | } |
203 | } |
184 | |
204 | |
185 | # used for direct slave connections as well |
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186 | package AnyEvent::MP::Node::Direct; |
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187 | |
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188 | use base "AnyEvent::MP::Node::External"; |
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189 | |
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190 | package AnyEvent::MP::Node::Self; |
205 | package AnyEvent::MP::Node::Self; |
191 | |
206 | |
192 | use base "AnyEvent::MP::Node"; |
207 | use base "AnyEvent::MP::Node"; |
193 | |
208 | |
194 | sub connect { |
209 | sub connect { |
195 | # we are trivially connected |
210 | # we are trivially connected |
196 | } |
211 | } |
197 | |
212 | |
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213 | # delay every so often to avoid recursion, also used to delay after spawn |
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214 | our $DELAY = -50; |
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215 | our @DELAY; |
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216 | our $DELAY_W; |
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217 | |
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218 | sub _send_delayed { |
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219 | local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""}; |
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220 | (shift @DELAY)->() |
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221 | while @DELAY; |
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222 | undef $DELAY_W; |
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223 | $DELAY = -50; |
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224 | } |
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225 | |
198 | sub transport_reset { |
226 | sub transport_reset { |
199 | my ($self) = @_; |
227 | my ($self) = @_; |
200 | |
228 | |
201 | Scalar::Util::weaken $self; |
229 | Scalar::Util::weaken $self; |
202 | |
230 | |
203 | $self->{send} = sub { |
231 | $self->{send} = sub { |
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232 | if ($DELAY++ >= 0) { |
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233 | my $msg = $_[0]; |
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234 | push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; |
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235 | $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; |
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236 | return; |
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237 | } |
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238 | |
204 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
239 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
205 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
240 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
206 | }; |
241 | }; |
207 | } |
242 | } |
208 | |
243 | |
… | |
… | |
211 | |
246 | |
212 | $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); |
247 | $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); |
213 | } |
248 | } |
214 | |
249 | |
215 | sub kill { |
250 | sub kill { |
216 | my ($self, $port, @reason) = @_; |
251 | my (undef, @args) = @_; |
217 | |
252 | |
218 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
253 | # we _always_ delay kil's, to avoid calling mon callbacks |
219 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
254 | # from anything but the event loop context. |
220 | |
255 | $DELAY = 1; |
221 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
256 | push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) }; |
222 | or !@reason |
257 | $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; |
223 | or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); |
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224 | |
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225 | $_->(@reason) for values %$mon; |
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226 | } |
258 | } |
227 | |
259 | |
228 | sub monitor { |
260 | sub monitor { |
229 | my ($self, $portid, $cb) = @_; |
261 | # maybe always delay, too? |
230 | |
262 | if ($DELAY_W) { |
231 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
263 | my @args = @_; |
232 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
264 | push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) }; |
233 | |
265 | return; |
234 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
266 | } |
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267 | &AnyEvent::MP::Kernel::_monitor; |
235 | } |
268 | } |
236 | |
269 | |
237 | sub unmonitor { |
270 | sub unmonitor { |
238 | my ($self, $portid, $cb) = @_; |
271 | # no need to always delay |
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272 | if ($DELAY_W) { |
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273 | my @args = @_; |
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274 | push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) }; |
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275 | return; |
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276 | } |
239 | |
277 | |
240 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
278 | &AnyEvent::MP::Kernel::_unmonitor; |
241 | } |
279 | } |
242 | |
280 | |
243 | =head1 SEE ALSO |
281 | =head1 SEE ALSO |
244 | |
282 | |
245 | L<AnyEvent::MP>. |
283 | L<AnyEvent::MP>. |