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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.41 by root, Fri Sep 11 02:32:23 2009 UTC vs.
Revision 1.67 by root, Sun Aug 28 08:23:34 2016 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 {
26 my ($self, $id) = @_; 25 my ($self, $id) = @_;
27 26
28 $self = bless { id => $id }, $self; 27 $self = bless { id => $id }, $self;
29 28
29 # register
30 $AnyEvent::MP::Kernel::NODE{$id} = $self;
31
30 $self->init; 32 $self->init;
31 $self->transport_reset; 33 $self->transport_reset;
32 34
33 $self 35 $self
34} 36}
35 37
38sub DESTROY {
39 # unregister
40 delete $AnyEvent::MP::Kernel::NODE{$_[0]{id}};
41}
42
36sub init { 43sub init {
37 # 44 #
38} 45}
39 46
40sub send { 47sub send {
41 &{ shift->{send} } 48 &{ shift->{send} }
42} 49}
43 50
44# nodes reachable via the network 51# nodes reachable via the network
45package AnyEvent::MP::Node::External; 52package AnyEvent::MP::Node::Remote; # a remote node
46 53
47use base "AnyEvent::MP::Node"; 54use base "AnyEvent::MP::Node";
48 55
49# called at init time, mostly sets {send} 56# called at init time, mostly sets {send}
50sub transport_reset { 57sub transport_reset {
… …
78 } 85 }
79 86
80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 87 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
81 unless $no_transport; 88 unless $no_transport;
82 89
83 # if we are here and are idle, we nuke ourselves 90 # we weaken the node reference, so it can go away if unused
84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}} 91 Scalar::Util::weaken $AnyEvent::MP::Kernel::NODE{$self->{id}}
85 unless $self->{transport} || $self->{connect_to}; 92 unless $self->{connect_to};
93
94 AE::log 9 => "@reason";
86} 95}
87 96
88# called after handshake was successful 97# called after handshake was successful
89sub transport_connect { 98sub transport_connect {
90 my ($self, $transport) = @_; 99 my ($self, $transport) = @_;
91 100
92 delete $self->{trial}; 101 delete $self->{trial};
93 102
94 $self->transport_error (transport_error => "switched connections") 103 $self->transport_error (transport_error => $self->{id}, "switched connections")
95 if $self->{transport}; 104 if $self->{transport};
96 105
97 delete $self->{connect_addr};
98 delete $self->{connect_w}; 106 delete $self->{connect_w};
99 delete $self->{connect_to}; 107 delete $self->{connect_to};
100 108
101 $self->{transport} = $transport; 109 $self->{transport} = $transport;
102 110
103 my $transport_send = $transport->can ("send"); 111 my $transport_send = $transport->{send};
104 112
105 $self->{send} = sub { 113 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
106 $transport_send->($transport, $_[0]); 114
115 $self->{send} = $transport_send;
116
117 $transport_send->($_)
118 for @{ delete $self->{queue} || [] };
119}
120
121sub connect {
122 my ($self) = @_;
123
124 return if $self->{transport};
125 return if $self->{connect_w};
126
127 # we unweaken the node reference, in case it was weakened before
128 $AnyEvent::MP::Kernel::NODE{$self->{id}}
129 = $AnyEvent::MP::Kernel::NODE{$self->{id}};
130
131 Scalar::Util::weaken $self;
132
133 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
134 $self->transport_error (transport_error => $self->{id}, "connect timeout");
107 }; 135 };
108 136
109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 137 # maybe @$addresses?
138 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
110 139
111 $transport->send ($_) 140 if ($addresses) {
112 for @{ delete $self->{queue} || [] }; 141 $self->connect_to ($addresses);
142 } else {
143 # on global nodes, all bets are off now - we either know the node, or we don't
144 if ($AnyEvent::MP::Kernel::GLOBAL) {
145 $self->transport_error (transport_error => $self->{id}, "no known address");
146 } else {
147 AnyEvent::MP::Kernel::g_find ($self->{id});
148 }
149 }
113} 150}
114 151
115sub connect { 152sub connect_to {
116 my ($self, @addresses) = @_; 153 my ($self, $addresses) = @_;
117 154
118 return if $self->{transport}; 155 return if $self->{transport};
156 return if $self->{connect_w};
119 157
120 Scalar::Util::weaken $self; 158 unless (@$addresses) {
121
122 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
123
124 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
125 $self->transport_error (transport_error => $self->{id}, "unable to connect"); 159 $self->transport_error (transport_error => $self->{id}, "no known address");
126 };
127
128 return unless @addresses;
129
130 if ($self->{connect_w}) {
131 # sometimes we get told about new addresses after we started to connect
132 unshift @{$self->{connect_addr}}, @addresses;
133 return; 160 return;
134 } 161 }
135 162
136 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
137
138 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); 163 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
139 164
165 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
140 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; 166 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
141 167
142 $interval = ($monitor - $interval) / @addresses 168 $interval = ($monitor - $interval) / @$addresses
143 if ($monitor - $interval) / @addresses < $interval; 169 if ($monitor - $interval) / @$addresses < $interval;
144 170
145 $interval = 0.4 if $interval < 0.4; 171 $interval = 0.4 if $interval < 0.4;
146 172
147 my @endpoints; 173 my @endpoints = reverse @$addresses;
148 174
149 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub { 175 $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; 176 my $endpoint = pop @endpoints;
154 177
155 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); 178 AE::log 9 => "connecting to $self->{id} at $endpoint";
156 179
157 $self->{trial}{$endpoint} ||= do { 180 $self->{trial}{$endpoint} ||= do {
158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 181 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); 182 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
160 183
161 AnyEvent::MP::Transport::mp_connect 184 AnyEvent::MP::Transport::mp_connect
162 $host, $port, 185 $host, $port,
163 sub { delete $self->{trial}{$endpoint} }, 186 sub { delete $self->{trial}{$endpoint} },
164 }; 187 };
… …
166} 189}
167 190
168sub kill { 191sub kill {
169 my ($self, $port, @reason) = @_; 192 my ($self, $port, @reason) = @_;
170 193
171 $self->send (["", kil => $port, @reason]); 194 $self->{send} (["", kil1 => $port, @reason]);
172} 195}
173 196
174sub monitor { 197sub monitor {
175 my ($self, $portid, $cb) = @_; 198 my ($self, $portid, $cb) = @_;
176 199
… …
194 $self->send (["", mon0 => $portid]); 217 $self->send (["", mon0 => $portid]);
195 delete $self->{monitor}{$portid}; 218 delete $self->{monitor}{$portid};
196 } 219 }
197} 220}
198 221
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; 222package AnyEvent::MP::Node::Self; # the local node
205 223
206use base "AnyEvent::MP::Node"; 224use base "AnyEvent::MP::Node";
207 225
208sub connect { 226sub connect {
209 # we are trivially connected 227 # we are trivially connected
210} 228}
211 229
212# delay every so often to avoid recursion, also used to delay after spawn 230# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY; 231our $DELAY = -50;
214our @DELAY; 232our @DELAY;
215our $DELAY_W; 233our $DELAY_W;
216 234
217sub _send_delayed { 235our $send_delayed = sub {
218 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""}; 236 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
219 (shift @DELAY)->() 237 (shift @DELAY)->()
220 while @DELAY; 238 while @DELAY;
221 undef $DELAY_W; 239 undef $DELAY_W;
222 $DELAY = -50; 240 $DELAY = -50;
223} 241};
224 242
225sub transport_reset { 243sub transport_reset {
226 my ($self) = @_; 244 my ($self) = @_;
227 245
228 Scalar::Util::weaken $self; 246 Scalar::Util::weaken $self;
229 247
230 $self->{send} = sub { 248 $self->{send} = sub {
231 if ($DELAY++ >= 0) { 249 if (++$DELAY > 0) {
232 my $msg = $_[0]; 250 my $msg = $_[0];
233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; 251 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
234 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; 252 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
235 return; 253 return;
236 } 254 }
237 255
238 local $AnyEvent::MP::Kernel::SRCNODE = $self; 256 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 257 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 }; 258 };
241} 259}
242 260
243sub transport_connect { 261sub transport_connect {
244 my ($self, $tp) = @_; 262 my ($self, $tp) = @_;
245 263
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 264 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
247} 265}
248 266
249sub kill { 267sub kill {
250 my ($self, $port, @reason) = @_; 268 my (undef, @args) = @_;
251 269
252 my $delay_cb = sub { 270 # we _always_ delay kil's, to avoid calling mon callbacks
253 delete $AnyEvent::MP::Kernel::PORT{$port}; 271 # from anything but the event loop context.
254 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 272 $DELAY = 1;
255 273 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
256 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 274 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
257 or !@reason
258 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
259
260 $_->(@reason) for values %$mon;
261 };
262
263 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
264} 275}
265 276
266sub monitor { 277sub monitor {
267 my ($self, $portid, $cb) = @_; 278 # maybe always delay, too?
268 279 if ($DELAY_W) {
269 my $delay_cb = sub { 280 my @args = @_;
270 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid") 281 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
271 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 282 return;
272
273 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
274 }; 283 }
275 284 &AnyEvent::MP::Kernel::_monitor;
276 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
277} 285}
278 286
279sub unmonitor { 287sub unmonitor {
280 my ($self, $portid, $cb) = @_; 288 # no need to always delay
281 289 if ($DELAY_W) {
282 my $delay_cb = sub { 290 my @args = @_;
283 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 291 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
292 return;
284 }; 293 }
285 294
286 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb; 295 &AnyEvent::MP::Kernel::_unmonitor;
287} 296}
288 297
289=head1 SEE ALSO 298=head1 SEE ALSO
290 299
291L<AnyEvent::MP>. 300L<AnyEvent::MP>.

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