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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.30 by root, Fri Aug 28 20:57:42 2009 UTC vs.
Revision 1.61 by root, Wed Mar 21 23:48:39 2012 UTC

1=head1 NAME 1=head1 NAME
2 2
3AnyEvent::MP::Node - a single processing node (CPU/process...) 3AnyEvent::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
10
11This is an internal utility module, horrible to look at, so don't.
10 12
11=cut 13=cut
12 14
13package AnyEvent::MP::Node; 15package AnyEvent::MP::Node;
14 16
… …
38sub send { 40sub send {
39 &{ shift->{send} } 41 &{ shift->{send} }
40} 42}
41 43
42# nodes reachable via the network 44# nodes reachable via the network
43package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::Remote;
44 46
45use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
46 48
47# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
48sub transport_reset { 50sub transport_reset {
… …
56 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
57 $self->connect; 59 $self->connect;
58 }; 60 };
59} 61}
60 62
61# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
62sub transport_error { 65sub transport_error {
63 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
64 67
65 my $no_transport = !$self->{transport}; 68 my $no_transport = !$self->{transport};
66 69
… …
74 $_->(@reason) for map @$_, values %$mon; 77 $_->(@reason) for map @$_, values %$mon;
75 } 78 }
76 79
77 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
78 unless $no_transport; 81 unless $no_transport;
82
83 # if we are here and are idle, we nuke ourselves
84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
85 unless $self->{transport} || $self->{connect_to};
79} 86}
80 87
81# called after handshake was successful 88# called after handshake was successful
82sub transport_connect { 89sub transport_connect {
83 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
84 91
85 delete $self->{trial}; 92 delete $self->{trial};
86 93
87 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
88 if $self->{transport}; 95 if $self->{transport};
89 96
90 delete $self->{connect_w}; 97 delete $self->{connect_w};
91 delete $self->{connect_to}; 98 delete $self->{connect_to};
92 99
93 $self->{transport} = $transport; 100 $self->{transport} = $transport;
94 101
95 my $transport_send = $transport->can ("send"); 102 my $transport_send = $transport->{send};
96
97 $self->{send} = sub {
98 $transport_send->($transport, $_[0]);
99 };
100 103
101 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
102 105
106 $self->{send} = $transport_send;
107
103 $transport->send ($_) 108 $transport_send->($_)
104 for @{ delete $self->{queue} || [] }; 109 for @{ delete $self->{queue} || [] };
105} 110}
106 111
107sub connect { 112sub connect {
108 my ($self, @addresses) = @_; 113 my ($self) = @_;
109 114
110 return if $self->{transport}; 115 return if $self->{transport};
116 return if $self->{connect_w};
111 117
112 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
113 119
114 $self->{connect_to} ||= AE::timer 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
115 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
116 0,
117 sub {
118 $self->transport_error (transport_error => $self->{id}, "unable to connect"); 121 $self->transport_error (transport_error => $self->{id}, "unable to connect");
122 };
123
124 # maybe @$addresses?
125 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
126
127 if ($addresses) {
128 $self->connect_to ($addresses);
129 } else {
130 # on global nodes, all bets are off now - we either know the node, or we don't
131 unless ($AnyEvent::MP::Kernel::GLOBAL) {
132 AnyEvent::MP::Kernel::g_find ($self->{id});
133 }
134 }
135}
136
137sub connect_to {
138 my ($self, $addresses) = @_;
139
140 return if $self->{transport};
141 return if $self->{connect_w};
142
143 return unless @$addresses;
144
145 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@$addresses]");
146
147 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
148 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
149
150 $interval = ($monitor - $interval) / @$addresses
151 if ($monitor - $interval) / @$addresses < $interval;
152
153 $interval = 0.4 if $interval < 0.4;
154
155 my @endpoints = reverse @$addresses;
156
157 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
158 my $endpoint = pop @endpoints;
159
160 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
161
162 $self->{trial}{$endpoint} ||= do {
163 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
164 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
165
166 AnyEvent::MP::Transport::mp_connect
167 $host, $port,
168 sub { delete $self->{trial}{$endpoint} },
119 }; 169 };
170 };
171}
120 172
173sub connect {
174 my ($self) = @_;
175
176 return if $self->{transport};
177 return if $self->{connect_w};
178
179 Scalar::Util::weaken $self;
180
181 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
182
183 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
184 $self->transport_error (transport_error => $self->{id}, "unable to connect");
185 };
186
187 # maybe @$addresses?
188 my @addresses = @{ $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}} };
189
121 return unless @addresses; 190 unless (@addresses) {
191 # on global nodes, all bets are off now - we either know the node, or we don't
192 unless ($AnyEvent::MP::Kernel::GLOBAL) {
193 AnyEvent::MP::Kernel::g_find ($self->{id});
194 }
195 return;
196 }
122 197
123 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); 198 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
124 199
125 unless ($self->{connect_w}) { 200 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
201
202 $interval = ($monitor - $interval) / @addresses
203 if ($monitor - $interval) / @addresses < $interval;
204
205 $interval = 0.4 if $interval < 0.4;
206
126 my @endpoints; 207 my @endpoints;
127 208
128 $self->{connect_w} = AE::timer 209 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
129 rand,
130 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
131 sub {
132 @endpoints = @addresses 210 @endpoints = @addresses
133 unless @endpoints; 211 unless @endpoints;
134 212
135 my $endpoint = shift @endpoints; 213 my $endpoint = shift @endpoints;
136 214
137 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); 215 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
138 216
139 $self->{trial}{$endpoint} ||= do { 217 $self->{trial}{$endpoint} ||= do {
140 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 218 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
141 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); 219 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
142 220
143 AnyEvent::MP::Transport::mp_connect 221 AnyEvent::MP::Transport::mp_connect
144 $host, $port, 222 $host, $port,
145 sub { delete $self->{trial}{$endpoint} }, 223 sub { delete $self->{trial}{$endpoint} },
146 };
147 }
148 ; 224 };
149 } 225 };
150} 226}
151 227
152sub kill { 228sub kill {
153 my ($self, $port, @reason) = @_; 229 my ($self, $port, @reason) = @_;
154 230
155 $self->send (["", kil => $port, @reason]); 231 $self->{send} (["", kil => $port, @reason]);
156} 232}
157 233
158sub monitor { 234sub monitor {
159 my ($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
184package AnyEvent::MP::Node::Direct;
185
186use base "AnyEvent::MP::Node::External";
187
188package AnyEvent::MP::Node::Self; 259package AnyEvent::MP::Node::Self;
189 260
190use base "AnyEvent::MP::Node"; 261use base "AnyEvent::MP::Node";
191 262
192sub connect { 263sub connect {
193 # we are trivially connected 264 # we are trivially connected
194} 265}
195 266
267# delay every so often to avoid recursion, also used to delay after spawn
268our $DELAY = -50;
269our @DELAY;
270our $DELAY_W;
271
272our $send_delayed = sub {
273 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
274 (shift @DELAY)->()
275 while @DELAY;
276 undef $DELAY_W;
277 $DELAY = -50;
278};
279
196sub transport_reset { 280sub transport_reset {
197 my ($self) = @_; 281 my ($self) = @_;
198 282
199 Scalar::Util::weaken $self; 283 Scalar::Util::weaken $self;
200 284
201 $self->{send} = sub { 285 $self->{send} = sub {
286 if (++$DELAY > 0) {
287 my $msg = $_[0];
288 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
289 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
290 return;
291 }
292
202 local $AnyEvent::MP::Kernel::SRCNODE = $self; 293 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
203 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 294 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204 }; 295 };
205} 296}
206 297
207sub transport_connect { 298sub transport_connect {
… …
209 300
210 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 301 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
211} 302}
212 303
213sub kill { 304sub kill {
214 my ($self, $port, @reason) = @_; 305 my (undef, @args) = @_;
215 306
216 delete $AnyEvent::MP::Kernel::PORT{$port}; 307 # we _always_ delay kil's, to avoid calling mon callbacks
217 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 308 # from anything but the event loop context.
218 309 $DELAY = 1;
219 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 310 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
220 or !@reason 311 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
221 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
222
223 $_->(@reason) for values %$mon;
224} 312}
225 313
226sub monitor { 314sub monitor {
227 my ($self, $portid, $cb) = @_; 315 # maybe always delay, too?
228 316 if ($DELAY_W) {
229 return $cb->(no_such_port => "cannot monitor nonexistent port") 317 my @args = @_;
230 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 318 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
231 319 return;
232 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 320 }
321 &AnyEvent::MP::Kernel::_monitor;
233} 322}
234 323
235sub unmonitor { 324sub unmonitor {
236 my ($self, $portid, $cb) = @_; 325 # no need to always delay
326 if ($DELAY_W) {
327 my @args = @_;
328 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
329 return;
330 }
237 331
238 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 332 &AnyEvent::MP::Kernel::_unmonitor;
239} 333}
240 334
241=head1 SEE ALSO 335=head1 SEE ALSO
242 336
243L<AnyEvent::MP>. 337L<AnyEvent::MP>.

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