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 | |
28 | $self->init; |
30 | $self->init; |
29 | $self->transport_reset; |
31 | $self->transport_reset; |
30 | |
32 | |
31 | $self |
33 | $self |
… | |
… | |
38 | sub send { |
40 | sub send { |
39 | &{ shift->{send} } |
41 | &{ shift->{send} } |
40 | } |
42 | } |
41 | |
43 | |
42 | # nodes reachable via the network |
44 | # nodes reachable via the network |
43 | package AnyEvent::MP::Node::External; |
45 | package AnyEvent::MP::Node::Remote; |
44 | |
46 | |
45 | use base "AnyEvent::MP::Node"; |
47 | use base "AnyEvent::MP::Node"; |
46 | |
48 | |
47 | # called at init time, mostly sets {send} |
49 | # called at init time, mostly sets {send} |
48 | sub transport_reset { |
50 | sub transport_reset { |
… | |
… | |
54 | |
56 | |
55 | $self->{send} = sub { |
57 | $self->{send} = sub { |
56 | push @{$self->{queue}}, shift; |
58 | push @{$self->{queue}}, shift; |
57 | $self->connect; |
59 | $self->connect; |
58 | }; |
60 | }; |
59 | |
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60 | $self->connect |
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61 | if $self->{autoconnect}; |
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62 | } |
61 | } |
63 | |
62 | |
64 | # called only after successful handshake |
63 | # called each time we fail to establish a connection, |
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64 | # or the existing connection failed |
65 | sub transport_error { |
65 | sub transport_error { |
66 | my ($self, @reason) = @_; |
66 | my ($self, @reason) = @_; |
67 | |
67 | |
68 | my $no_transport = !$self->{transport}; |
68 | my $no_transport = !$self->{transport}; |
69 | |
69 | |
… | |
… | |
71 | delete $self->{connect_to}; |
71 | delete $self->{connect_to}; |
72 | |
72 | |
73 | delete $self->{queue}; |
73 | delete $self->{queue}; |
74 | $self->transport_reset; |
74 | $self->transport_reset; |
75 | |
75 | |
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76 | if (my $mon = delete $self->{lmon}) { |
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77 | $_->(@reason) for map @$_, values %$mon; |
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78 | } |
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79 | |
76 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
80 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
77 | unless $no_transport; |
81 | unless $no_transport; |
78 | |
82 | |
79 | if (my $mon = delete $self->{lmon}) { |
83 | # if we are here and are idle, we nuke ourselves |
80 | $_->(@reason) for map @$_, values %$mon; |
84 | delete $AnyEvent::MP::Kernel::NODE{$self->{id}} |
81 | } |
85 | unless $self->{transport} || $self->{connect_to}; |
82 | } |
86 | } |
83 | |
87 | |
84 | # called after handshake was successful |
88 | # called after handshake was successful |
85 | sub transport_connect { |
89 | sub transport_connect { |
86 | my ($self, $transport) = @_; |
90 | my ($self, $transport) = @_; |
87 | |
91 | |
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92 | delete $self->{trial}; |
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93 | |
88 | $self->transport_error (transport_error => "switched connections") |
94 | $self->transport_error (transport_error => $self->{id}, "switched connections") |
89 | if $self->{transport}; |
95 | if $self->{transport}; |
90 | |
96 | |
91 | delete $self->{connect_w}; |
97 | delete $self->{connect_w}; |
92 | delete $self->{connect_to}; |
98 | delete $self->{connect_to}; |
93 | |
99 | |
94 | $self->{transport} = $transport; |
100 | $self->{transport} = $transport; |
95 | |
101 | |
96 | my $transport_send = $transport->can ("send"); |
102 | my $transport_send = $transport->{send}; |
97 | |
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98 | $self->{send} = sub { |
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99 | $transport_send->($transport, $_[0]); |
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100 | }; |
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101 | |
103 | |
102 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
104 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
103 | |
105 | |
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106 | $self->{send} = $transport_send; |
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107 | |
104 | $transport->send ($_) |
108 | $transport_send->($_) |
105 | for @{ delete $self->{queue} || [] }; |
109 | for @{ delete $self->{queue} || [] }; |
106 | } |
110 | } |
107 | |
111 | |
108 | sub connect { |
112 | sub connect { |
109 | my ($self) = @_; |
113 | my ($self) = @_; |
110 | |
114 | |
111 | return if $self->{transport}; |
115 | return if $self->{transport}; |
112 | |
116 | return if $self->{connect_w}; |
113 | # just ignore connect requests for slave nodes - let's hope it connects to us instead |
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114 | return if $self->{noderef} =~ /^slave\//; |
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115 | |
117 | |
116 | Scalar::Util::weaken $self; |
118 | Scalar::Util::weaken $self; |
117 | |
119 | |
118 | $self->{connect_to} ||= AE::timer |
120 | $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub { |
119 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
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120 | 0, |
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121 | sub { |
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122 | $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); |
121 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
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122 | }; |
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123 | |
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124 | # maybe @$addresses? |
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125 | my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}}; |
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126 | |
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127 | if ($addresses) { |
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128 | $self->connect_to ($addresses); |
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129 | } else { |
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130 | # on global nodes, all bets are off now - we either know the node, or we don't |
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131 | unless ($AnyEvent::MP::Kernel::GLOBAL) { |
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132 | AnyEvent::MP::Kernel::g_find ($self->{id}); |
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133 | } |
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134 | } |
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135 | } |
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136 | |
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137 | sub connect_to { |
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138 | my ($self, $addresses) = @_; |
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139 | |
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140 | return if $self->{transport}; |
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141 | return if $self->{connect_w}; |
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142 | |
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143 | return unless @$addresses; |
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144 | |
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145 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@$addresses]"); |
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146 | |
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147 | my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
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148 | my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; |
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149 | |
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150 | $interval = ($monitor - $interval) / @$addresses |
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151 | if ($monitor - $interval) / @$addresses < $interval; |
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152 | |
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153 | $interval = 0.4 if $interval < 0.4; |
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154 | |
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155 | my @endpoints = reverse @$addresses; |
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156 | |
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157 | $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub { |
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158 | my $endpoint = pop @endpoints; |
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159 | |
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160 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
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161 | |
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162 | $self->{trial}{$endpoint} ||= do { |
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163 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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164 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
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165 | |
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166 | AnyEvent::MP::Transport::mp_connect |
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167 | $host, $port, |
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168 | sub { delete $self->{trial}{$endpoint} }, |
123 | }; |
169 | }; |
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170 | }; |
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171 | } |
124 | |
172 | |
125 | unless ($self->{connect_w}) { |
173 | sub connect { |
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174 | my ($self) = @_; |
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175 | |
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176 | return if $self->{transport}; |
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177 | return if $self->{connect_w}; |
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178 | |
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179 | Scalar::Util::weaken $self; |
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180 | |
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181 | my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
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182 | |
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183 | $self->{connect_to} ||= AE::timer $monitor, 0, sub { |
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184 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
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185 | }; |
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186 | |
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187 | # maybe @$addresses? |
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188 | my @addresses = @{ $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}} }; |
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189 | |
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190 | unless (@addresses) { |
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191 | # on global nodes, all bets are off now - we either know the node, or we don't |
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192 | unless ($AnyEvent::MP::Kernel::GLOBAL) { |
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193 | AnyEvent::MP::Kernel::g_find ($self->{id}); |
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194 | } |
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195 | return; |
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196 | } |
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197 | |
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198 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); |
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199 | |
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200 | my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; |
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201 | |
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202 | $interval = ($monitor - $interval) / @addresses |
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203 | if ($monitor - $interval) / @addresses < $interval; |
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204 | |
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205 | $interval = 0.4 if $interval < 0.4; |
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206 | |
126 | my @endpoints; |
207 | my @endpoints; |
127 | my %trial; |
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128 | |
208 | |
129 | $self->{connect_w} = AE::timer |
209 | $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub { |
130 | rand, |
210 | @endpoints = @addresses |
131 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
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132 | sub { |
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133 | @endpoints = split /,/, $self->{noderef} |
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134 | unless @endpoints; |
211 | unless @endpoints; |
135 | |
212 | |
136 | my $endpoint = shift @endpoints; |
213 | my $endpoint = shift @endpoints; |
137 | |
214 | |
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215 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
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216 | |
138 | $trial{$endpoint} ||= do { |
217 | $self->{trial}{$endpoint} ||= do { |
139 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
218 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
140 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{noderef}: not a resolved node reference."); |
219 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
141 | |
220 | |
142 | AnyEvent::MP::Transport::mp_connect |
221 | AnyEvent::MP::Transport::mp_connect |
143 | $host, $port, |
222 | $host, $port, |
144 | sub { delete $trial{$endpoint} } |
223 | sub { delete $self->{trial}{$endpoint} }, |
145 | ; |
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146 | }; |
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147 | } |
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148 | ; |
224 | }; |
149 | } |
225 | }; |
150 | } |
226 | } |
151 | |
227 | |
152 | sub kill { |
228 | sub kill { |
153 | my ($self, $port, @reason) = @_; |
229 | my ($self, $port, @reason) = @_; |
154 | |
230 | |
155 | $self->send (["", kil => $port, @reason]); |
231 | $self->{send} (["", kil => $port, @reason]); |
156 | } |
232 | } |
157 | |
233 | |
158 | sub monitor { |
234 | sub monitor { |
159 | my ($self, $portid, $cb) = @_; |
235 | my ($self, $portid, $cb) = @_; |
160 | |
236 | |
… | |
… | |
178 | $self->send (["", mon0 => $portid]); |
254 | $self->send (["", mon0 => $portid]); |
179 | delete $self->{monitor}{$portid}; |
255 | delete $self->{monitor}{$portid}; |
180 | } |
256 | } |
181 | } |
257 | } |
182 | |
258 | |
183 | # used for direct slave connections as well |
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184 | package AnyEvent::MP::Node::Direct; |
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185 | |
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186 | use base "AnyEvent::MP::Node::External"; |
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187 | |
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188 | package AnyEvent::MP::Node::Self; |
259 | package AnyEvent::MP::Node::Self; |
189 | |
260 | |
190 | use base "AnyEvent::MP::Node"; |
261 | use base "AnyEvent::MP::Node"; |
191 | |
262 | |
192 | sub connect { |
263 | sub connect { |
193 | # we are trivially connected |
264 | # we are trivially connected |
194 | } |
265 | } |
195 | |
266 | |
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267 | # delay every so often to avoid recursion, also used to delay after spawn |
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268 | our $DELAY = -50; |
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269 | our @DELAY; |
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270 | our $DELAY_W; |
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271 | |
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272 | sub _send_delayed { |
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273 | local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""}; |
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274 | (shift @DELAY)->() |
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275 | while @DELAY; |
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276 | undef $DELAY_W; |
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277 | $DELAY = -50; |
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278 | } |
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279 | |
196 | sub transport_reset { |
280 | sub transport_reset { |
197 | my ($self) = @_; |
281 | my ($self) = @_; |
198 | |
282 | |
199 | Scalar::Util::weaken $self; |
283 | Scalar::Util::weaken $self; |
200 | |
284 | |
201 | $self->{send} = sub { |
285 | $self->{send} = sub { |
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286 | if ($DELAY++ >= 0) { |
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287 | my $msg = $_[0]; |
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288 | push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; |
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289 | $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; |
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290 | return; |
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291 | } |
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292 | |
202 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
293 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
203 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
294 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
204 | }; |
295 | }; |
205 | } |
296 | } |
206 | |
297 | |
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298 | sub transport_connect { |
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299 | my ($self, $tp) = @_; |
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300 | |
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301 | $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); |
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302 | } |
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303 | |
207 | sub kill { |
304 | sub kill { |
208 | my ($self, $port, @reason) = @_; |
305 | my (undef, @args) = @_; |
209 | |
306 | |
210 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
307 | # we _always_ delay kil's, to avoid calling mon callbacks |
211 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
308 | # from anything but the event loop context. |
212 | |
309 | $DELAY = 1; |
213 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
310 | push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) }; |
214 | or !@reason |
311 | $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; |
215 | or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); |
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216 | |
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217 | $_->(@reason) for values %$mon; |
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218 | } |
312 | } |
219 | |
313 | |
220 | sub monitor { |
314 | sub monitor { |
221 | my ($self, $portid, $cb) = @_; |
315 | # maybe always delay, too? |
222 | |
316 | if ($DELAY_W) { |
223 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
317 | my @args = @_; |
224 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
318 | push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) }; |
225 | |
319 | return; |
226 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
320 | } |
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321 | &AnyEvent::MP::Kernel::_monitor; |
227 | } |
322 | } |
228 | |
323 | |
229 | sub unmonitor { |
324 | sub unmonitor { |
230 | my ($self, $portid, $cb) = @_; |
325 | # no need to always delay |
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326 | if ($DELAY_W) { |
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327 | my @args = @_; |
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328 | push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) }; |
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329 | return; |
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330 | } |
231 | |
331 | |
232 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
332 | &AnyEvent::MP::Kernel::_unmonitor; |
233 | } |
333 | } |
234 | |
334 | |
235 | =head1 SEE ALSO |
335 | =head1 SEE ALSO |
236 | |
336 | |
237 | L<AnyEvent::MP>. |
337 | L<AnyEvent::MP>. |