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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.43 by root, Thu Oct 1 16:11:05 2009 UTC vs.
Revision 1.68 by root, Sun Aug 28 09:39:23 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
177 or return $self->transport_error (transport_error => $self->{id}, "unable to connect to any address");
154 178
155 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); 179 AE::log 9 => "connecting to $self->{id} at $endpoint";
156 180
157 $self->{trial}{$endpoint} ||= do { 181 $self->{trial}{$endpoint} ||= do {
158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 182 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); 183 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
160 184
161 AnyEvent::MP::Transport::mp_connect 185 AnyEvent::MP::Transport::mp_connect
162 $host, $port, 186 $host, $port,
163 sub { delete $self->{trial}{$endpoint} }, 187 sub { delete $self->{trial}{$endpoint} },
164 }; 188 };
… …
166} 190}
167 191
168sub kill { 192sub kill {
169 my ($self, $port, @reason) = @_; 193 my ($self, $port, @reason) = @_;
170 194
171 $self->send (["", kil => $port, @reason]); 195 $self->{send} (["", kil1 => $port, @reason]);
172} 196}
173 197
174sub monitor { 198sub monitor {
175 my ($self, $portid, $cb) = @_; 199 my ($self, $portid, $cb) = @_;
176 200
… …
194 $self->send (["", mon0 => $portid]); 218 $self->send (["", mon0 => $portid]);
195 delete $self->{monitor}{$portid}; 219 delete $self->{monitor}{$portid};
196 } 220 }
197} 221}
198 222
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; 223package AnyEvent::MP::Node::Self; # the local node
205 224
206use base "AnyEvent::MP::Node"; 225use base "AnyEvent::MP::Node";
207 226
208sub connect { 227sub connect {
209 # we are trivially connected 228 # we are trivially connected
… …
212# delay every so often to avoid recursion, also used to delay after spawn 231# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY = -50; 232our $DELAY = -50;
214our @DELAY; 233our @DELAY;
215our $DELAY_W; 234our $DELAY_W;
216 235
217sub _send_delayed { 236our $send_delayed = sub {
218 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""}; 237 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
219 (shift @DELAY)->() 238 (shift @DELAY)->()
220 while @DELAY; 239 while @DELAY;
221 undef $DELAY_W; 240 undef $DELAY_W;
222 $DELAY = -50; 241 $DELAY = -50;
223} 242};
224 243
225sub transport_reset { 244sub transport_reset {
226 my ($self) = @_; 245 my ($self) = @_;
227 246
228 Scalar::Util::weaken $self; 247 Scalar::Util::weaken $self;
229 248
230 $self->{send} = sub { 249 $self->{send} = sub {
231 if ($DELAY++ >= 0) { 250 if (++$DELAY > 0) {
232 my $msg = $_[0]; 251 my $msg = $_[0];
233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; 252 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
234 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; 253 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
235 return; 254 return;
236 } 255 }
237 256
238 local $AnyEvent::MP::Kernel::SRCNODE = $self; 257 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 258 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 }; 259 };
241} 260}
242 261
243sub transport_connect { 262sub transport_connect {
244 my ($self, $tp) = @_; 263 my ($self, $tp) = @_;
245 264
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 265 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
247} 266}
248 267
249sub kill { 268sub kill {
250 my ($self, $port, @reason) = @_; 269 my (undef, @args) = @_;
251 270
252 my $delay_cb = sub { 271 # we _always_ delay kil's, to avoid calling mon callbacks
253 delete $AnyEvent::MP::Kernel::PORT{$port} 272 # from anything but the event loop context.
254 or return; # killing nonexistent ports is O.K. 273 $DELAY = 1;
255 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 274 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
256 275 $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} 276}
266 277
267sub monitor { 278sub monitor {
268 my ($self, $portid, $cb) = @_; 279 # maybe always delay, too?
269 280 if ($DELAY_W) {
270 my $delay_cb = sub { 281 my @args = @_;
271 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid") 282 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
272 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 283 return;
273
274 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
275 }; 284 }
276 285 &AnyEvent::MP::Kernel::_monitor;
277 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
278} 286}
279 287
280sub unmonitor { 288sub unmonitor {
281 my ($self, $portid, $cb) = @_; 289 # no need to always delay
282 290 if ($DELAY_W) {
283 my $delay_cb = sub { 291 my @args = @_;
284 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 292 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
293 return;
285 }; 294 }
286 295
287 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb; 296 &AnyEvent::MP::Kernel::_unmonitor;
288} 297}
289 298
290=head1 SEE ALSO 299=head1 SEE ALSO
291 300
292L<AnyEvent::MP>. 301L<AnyEvent::MP>.

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