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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.28 by root, Thu Aug 27 21:29:37 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 {
… …
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
60 $self->connect
61 if $self->{autoconnect};
62} 61}
63 62
64# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error { 65sub transport_error {
66 my ($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
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
78 }
79
76 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
82} 86}
83 87
84# called after handshake was successful 88# called after handshake was successful
85sub transport_connect { 89sub transport_connect {
86 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
87 91
88 delete $self->{trial}; 92 delete $self->{trial};
89 93
90 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
91 if $self->{transport}; 95 if $self->{transport};
92 96
93 delete $self->{connect_w}; 97 delete $self->{connect_w};
94 delete $self->{connect_to}; 98 delete $self->{connect_to};
95 99
96 $self->{transport} = $transport; 100 $self->{transport} = $transport;
97 101
98 my $transport_send = $transport->can ("send"); 102 my $transport_send = $transport->{send};
99
100 $self->{send} = sub {
101 $transport_send->($transport, $_[0]);
102 };
103 103
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105 105
106 $self->{send} = $transport_send;
107
106 $transport->send ($_) 108 $transport_send->($_)
107 for @{ delete $self->{queue} || [] }; 109 for @{ delete $self->{queue} || [] };
108} 110}
109 111
110sub connect { 112sub connect {
111 my ($self, @addresses) = @_; 113 my ($self) = @_;
112 114
113 return if $self->{transport}; 115 return if $self->{transport};
116 return if $self->{connect_w};
114 117
115 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
116 119
117 $self->{connect_to} ||= AE::timer 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
118 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
119 0,
120 sub {
121 $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} },
122 }; 169 };
170 };
171}
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
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 }
123 197
124 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); 198 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
125 return unless @addresses;
126 199
127 unless ($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
128 my @endpoints; 207 my @endpoints;
129 208
130 $self->{connect_w} = AE::timer 209 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
131 rand,
132 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
133 sub {
134 @endpoints = @addresses 210 @endpoints = @addresses
135 unless @endpoints; 211 unless @endpoints;
136 212
137 my $endpoint = shift @endpoints; 213 my $endpoint = shift @endpoints;
138 214
139 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); 215 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
140 216
141 $self->{trial}{$endpoint} ||= do { 217 $self->{trial}{$endpoint} ||= do {
142 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 218 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
143 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.");
144 220
145 AnyEvent::MP::Transport::mp_connect 221 AnyEvent::MP::Transport::mp_connect
146 $host, $port, 222 $host, $port,
147 sub { delete $self->{trial}{$endpoint} }, 223 sub { delete $self->{trial}{$endpoint} },
148 };
149 }
150 ; 224 };
151 } 225 };
152} 226}
153 227
154sub kill { 228sub kill {
155 my ($self, $port, @reason) = @_; 229 my ($self, $port, @reason) = @_;
156 230
157 $self->send (["", kil => $port, @reason]); 231 $self->{send} (["", kil => $port, @reason]);
158} 232}
159 233
160sub monitor { 234sub monitor {
161 my ($self, $portid, $cb) = @_; 235 my ($self, $portid, $cb) = @_;
162 236
… …
180 $self->send (["", mon0 => $portid]); 254 $self->send (["", mon0 => $portid]);
181 delete $self->{monitor}{$portid}; 255 delete $self->{monitor}{$portid};
182 } 256 }
183} 257}
184 258
185# used for direct slave connections as well
186package AnyEvent::MP::Node::Direct;
187
188use base "AnyEvent::MP::Node::External";
189
190package AnyEvent::MP::Node::Self; 259package AnyEvent::MP::Node::Self;
191 260
192use base "AnyEvent::MP::Node"; 261use base "AnyEvent::MP::Node";
193 262
194sub connect { 263sub connect {
195 # we are trivially connected 264 # we are trivially connected
196} 265}
197 266
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 $DELAY = -50;
278};
279
198sub transport_reset { 280sub transport_reset {
199 my ($self) = @_; 281 my ($self) = @_;
200 282
201 Scalar::Util::weaken $self; 283 Scalar::Util::weaken $self;
202 284
203 $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
204 local $AnyEvent::MP::Kernel::SRCNODE = $self; 293 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
205 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 294 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
206 }; 295 };
207} 296}
208 297
209sub transport_connect { 298sub transport_connect {
… …
211 300
212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 301 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
213} 302}
214 303
215sub kill { 304sub kill {
216 my ($self, $port, @reason) = @_; 305 my (undef, @args) = @_;
217 306
218 delete $AnyEvent::MP::Kernel::PORT{$port}; 307 # we _always_ delay kil's, to avoid calling mon callbacks
219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 308 # from anything but the event loop context.
220 309 $DELAY = 1;
221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 310 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
222 or !@reason 311 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
223 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
224
225 $_->(@reason) for values %$mon;
226} 312}
227 313
228sub monitor { 314sub monitor {
229 my ($self, $portid, $cb) = @_; 315 # maybe always delay, too?
230 316 if ($DELAY_W) {
231 return $cb->(no_such_port => "cannot monitor nonexistent port") 317 my @args = @_;
232 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 318 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
233 319 return;
234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 320 }
321 &AnyEvent::MP::Kernel::_monitor;
235} 322}
236 323
237sub unmonitor { 324sub unmonitor {
238 my ($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 }
239 331
240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 332 &AnyEvent::MP::Kernel::_unmonitor;
241} 333}
242 334
243=head1 SEE ALSO 335=head1 SEE ALSO
244 336
245L<AnyEvent::MP>. 337L<AnyEvent::MP>.

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