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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.42 by root, Wed Sep 23 11:57:16 2009 UTC vs.
Revision 1.65 by root, Fri Mar 23 21:16:36 2012 UTC

… …
10 10
11This is an internal utility module, horrible to look at, so don't. 11This is an internal utility module, horrible to look at, so don't.
12 12
13=cut 13=cut
14 14
15package AnyEvent::MP::Node; 15package AnyEvent::MP::Node; # base class for nodes
16 16
17use common::sense; 17use common::sense;
18 18
19use AE ();
20use AnyEvent::Util (); 19use AnyEvent ();
21use AnyEvent::Socket (); 20use AnyEvent::Socket ();
22 21
23use AnyEvent::MP::Transport (); 22use AnyEvent::MP::Transport ();
24 23
25sub new { 24sub new {
… …
40sub send { 39sub send {
41 &{ shift->{send} } 40 &{ shift->{send} }
42} 41}
43 42
44# nodes reachable via the network 43# nodes reachable via the network
45package AnyEvent::MP::Node::External; 44package AnyEvent::MP::Node::Remote; # a remote node
46 45
47use base "AnyEvent::MP::Node"; 46use base "AnyEvent::MP::Node";
48 47
49# called at init time, mostly sets {send} 48# called at init time, mostly sets {send}
50sub transport_reset { 49sub transport_reset {
… …
89sub transport_connect { 88sub transport_connect {
90 my ($self, $transport) = @_; 89 my ($self, $transport) = @_;
91 90
92 delete $self->{trial}; 91 delete $self->{trial};
93 92
94 $self->transport_error (transport_error => "switched connections") 93 $self->transport_error (transport_error => $self->{id}, "switched connections")
95 if $self->{transport}; 94 if $self->{transport};
96 95
97 delete $self->{connect_addr};
98 delete $self->{connect_w}; 96 delete $self->{connect_w};
99 delete $self->{connect_to}; 97 delete $self->{connect_to};
100 98
101 $self->{transport} = $transport; 99 $self->{transport} = $transport;
102 100
103 my $transport_send = $transport->can ("send"); 101 my $transport_send = $transport->{send};
104
105 $self->{send} = sub {
106 $transport_send->($transport, $_[0]);
107 };
108 102
109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
110 104
105 $self->{send} = $transport_send;
106
111 $transport->send ($_) 107 $transport_send->($_)
112 for @{ delete $self->{queue} || [] }; 108 for @{ delete $self->{queue} || [] };
113} 109}
114 110
115sub connect { 111sub connect {
116 my ($self, @addresses) = @_; 112 my ($self) = @_;
117 113
118 return if $self->{transport}; 114 return if $self->{transport};
115 return if $self->{connect_w};
119 116
120 Scalar::Util::weaken $self; 117 Scalar::Util::weaken $self;
121 118
122 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; 119 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
123
124 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
125 $self->transport_error (transport_error => $self->{id}, "unable to connect"); 120 $self->transport_error (transport_error => $self->{id}, "unable to connect");
126 }; 121 };
127 122
123 # maybe @$addresses?
124 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
125
126 if ($addresses) {
127 $self->connect_to ($addresses);
128 } else {
129 # on global nodes, all bets are off now - we either know the node, or we don't
130 unless ($AnyEvent::MP::Kernel::GLOBAL) {
131 AnyEvent::MP::Kernel::g_find ($self->{id});
132 }
133 }
134}
135
136sub connect_to {
137 my ($self, $addresses) = @_;
138
139 return if $self->{transport};
140 return if $self->{connect_w};
141
128 return unless @addresses; 142 return unless @$addresses;
129
130 if ($self->{connect_w}) {
131 # sometimes we get told about new addresses after we started to connect
132 unshift @{$self->{connect_addr}}, @addresses;
133 return;
134 } 143
135
136 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
137
138 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); 144 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
139 145
146 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
140 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; 147 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
141 148
142 $interval = ($monitor - $interval) / @addresses 149 $interval = ($monitor - $interval) / @$addresses
143 if ($monitor - $interval) / @addresses < $interval; 150 if ($monitor - $interval) / @$addresses < $interval;
144 151
145 $interval = 0.4 if $interval < 0.4; 152 $interval = 0.4 if $interval < 0.4;
146 153
147 my @endpoints; 154 my @endpoints = reverse @$addresses;
148 155
149 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub { 156 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
150 @endpoints = @addresses
151 unless @endpoints;
152
153 my $endpoint = shift @endpoints; 157 my $endpoint = pop @endpoints;
154 158
155 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); 159 AE::log 9 => "connecting to $self->{id} at $endpoint";
156 160
157 $self->{trial}{$endpoint} ||= do { 161 $self->{trial}{$endpoint} ||= do {
158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 162 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); 163 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
160 164
161 AnyEvent::MP::Transport::mp_connect 165 AnyEvent::MP::Transport::mp_connect
162 $host, $port, 166 $host, $port,
163 sub { delete $self->{trial}{$endpoint} }, 167 sub { delete $self->{trial}{$endpoint} },
164 }; 168 };
… …
166} 170}
167 171
168sub kill { 172sub kill {
169 my ($self, $port, @reason) = @_; 173 my ($self, $port, @reason) = @_;
170 174
171 $self->send (["", kil => $port, @reason]); 175 $self->{send} (["", kil => $port, @reason]);
172} 176}
173 177
174sub monitor { 178sub monitor {
175 my ($self, $portid, $cb) = @_; 179 my ($self, $portid, $cb) = @_;
176 180
… …
194 $self->send (["", mon0 => $portid]); 198 $self->send (["", mon0 => $portid]);
195 delete $self->{monitor}{$portid}; 199 delete $self->{monitor}{$portid};
196 } 200 }
197} 201}
198 202
199# used for direct slave connections as well
200package AnyEvent::MP::Node::Direct;
201
202use base "AnyEvent::MP::Node::External";
203
204package AnyEvent::MP::Node::Self; 203package AnyEvent::MP::Node::Self; # the local node
205 204
206use base "AnyEvent::MP::Node"; 205use base "AnyEvent::MP::Node";
207 206
208sub connect { 207sub connect {
209 # we are trivially connected 208 # we are trivially connected
210} 209}
211 210
212# delay every so often to avoid recursion, also used to delay after spawn 211# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY; 212our $DELAY = -50;
214our @DELAY; 213our @DELAY;
215our $DELAY_W; 214our $DELAY_W;
216 215
217sub _send_delayed { 216our $send_delayed = sub {
218 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""}; 217 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
219 (shift @DELAY)->() 218 (shift @DELAY)->()
220 while @DELAY; 219 while @DELAY;
221 undef $DELAY_W; 220 undef $DELAY_W;
222 $DELAY = -50; 221 $DELAY = -50;
223} 222};
224 223
225sub transport_reset { 224sub transport_reset {
226 my ($self) = @_; 225 my ($self) = @_;
227 226
228 Scalar::Util::weaken $self; 227 Scalar::Util::weaken $self;
229 228
230 $self->{send} = sub { 229 $self->{send} = sub {
231 if ($DELAY++ >= 0) { 230 if (++$DELAY > 0) {
232 my $msg = $_[0]; 231 my $msg = $_[0];
233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; 232 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
234 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; 233 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
235 return; 234 return;
236 } 235 }
237 236
238 local $AnyEvent::MP::Kernel::SRCNODE = $self; 237 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 238 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 }; 239 };
241} 240}
242 241
243sub transport_connect { 242sub transport_connect {
244 my ($self, $tp) = @_; 243 my ($self, $tp) = @_;
245 244
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 245 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
247} 246}
248 247
249sub kill { 248sub kill {
250 my ($self, $port, @reason) = @_; 249 my (undef, @args) = @_;
251 250
252 my $delay_cb = sub { 251 # we _always_ delay kil's, to avoid calling mon callbacks
253 delete $AnyEvent::MP::Kernel::PORT{$port} 252 # from anything but the event loop context.
254 or return; # killing nonexistent ports is O.K. 253 $DELAY = 1;
255 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 254 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
256 255 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
257 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
258 or !@reason
259 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
260
261 $_->(@reason) for values %$mon;
262 };
263
264 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
265} 256}
266 257
267sub monitor { 258sub monitor {
268 my ($self, $portid, $cb) = @_; 259 # maybe always delay, too?
269 260 if ($DELAY_W) {
270 my $delay_cb = sub { 261 my @args = @_;
271 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid") 262 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
272 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 263 return;
273
274 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
275 }; 264 }
276 265 &AnyEvent::MP::Kernel::_monitor;
277 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
278} 266}
279 267
280sub unmonitor { 268sub unmonitor {
281 my ($self, $portid, $cb) = @_; 269 # no need to always delay
282 270 if ($DELAY_W) {
283 my $delay_cb = sub { 271 my @args = @_;
284 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 272 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
273 return;
285 }; 274 }
286 275
287 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb; 276 &AnyEvent::MP::Kernel::_unmonitor;
288} 277}
289 278
290=head1 SEE ALSO 279=head1 SEE ALSO
291 280
292L<AnyEvent::MP>. 281L<AnyEvent::MP>.

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