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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.33 by root, Sun Aug 30 21:45:51 2009 UTC vs.
Revision 1.69 by root, Sun Aug 28 14:49:44 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_w}; 106 delete $self->{connect_w};
98 delete $self->{connect_to}; 107 delete $self->{connect_to};
99 108
100 $self->{transport} = $transport; 109 $self->{transport} = $transport;
101 110
102 my $transport_send = $transport->can ("send"); 111 my $transport_send = $transport->{send};
103 112
104 $self->{send} = sub { 113 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105 $transport_send->($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 => $self->{id}, "connect timeout");
106 }; 135 };
107 136
108 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 137 # maybe @$addresses?
138 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
109 139
110 $transport->send ($_) 140 if ($addresses) {
111 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 }
112} 150}
113 151
114sub connect { 152sub connect_to {
115 my ($self, @addresses) = @_; 153 my ($self, $addresses) = @_;
116 154
117 return if $self->{transport}; 155 return if $self->{transport};
118
119 Scalar::Util::weaken $self;
120
121 my $monitor = $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT;
122
123 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
124 $self->transport_error (transport_error => $self->{id}, "unable to connect");
125 };
126
127 return unless @addresses;
128 return if $self->{connect_w}; 156 return if $self->{connect_w};
129 157
158 unless (@$addresses) {
159 $self->transport_error (transport_error => $self->{id}, "no known address");
160 return;
161 }
162
130 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); 163 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
131 164
132 my $interval = $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL; 165 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
166 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
133 167
134 $interval = ($monitor - $interval) / @addresses 168 $interval = ($monitor - $interval) / @$addresses
135 if ($monitor - $interval) / @addresses < $interval; 169 if ($monitor - $interval) / @$addresses < $interval;
136 170
137 $interval = 0.4 if $interval < 0.4; 171 $interval = 0.4 if $interval < 0.4;
138 172
139 my @endpoints; 173 my @endpoints = reverse @$addresses;
140 174
141 $self->{connect_w} = AE::timer rand, $interval, sub { 175 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
142 @endpoints = @addresses
143 unless @endpoints;
144
145 my $endpoint = shift @endpoints; 176 my $endpoint = pop @endpoints
177 or return;
146 178
147 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); 179 AE::log 9 => "connecting to $self->{id} at $endpoint";
148 180
149 $self->{trial}{$endpoint} ||= do { 181 $self->{trial}{$endpoint} ||= do {
150 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 182 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
151 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.";
152 184
153 AnyEvent::MP::Transport::mp_connect 185 AnyEvent::MP::Transport::mp_connect
154 $host, $port, 186 $host, $port,
155 sub { delete $self->{trial}{$endpoint} }, 187 sub { delete $self->{trial}{$endpoint} },
156 }; 188 };
… …
158} 190}
159 191
160sub kill { 192sub kill {
161 my ($self, $port, @reason) = @_; 193 my ($self, $port, @reason) = @_;
162 194
163 $self->send (["", kil => $port, @reason]); 195 $self->{send} (["", kil1 => $port, @reason]);
164} 196}
165 197
166sub monitor { 198sub monitor {
167 my ($self, $portid, $cb) = @_; 199 my ($self, $portid, $cb) = @_;
168 200
… …
186 $self->send (["", mon0 => $portid]); 218 $self->send (["", mon0 => $portid]);
187 delete $self->{monitor}{$portid}; 219 delete $self->{monitor}{$portid};
188 } 220 }
189} 221}
190 222
191# used for direct slave connections as well
192package AnyEvent::MP::Node::Direct;
193
194use base "AnyEvent::MP::Node::External";
195
196package AnyEvent::MP::Node::Self; 223package AnyEvent::MP::Node::Self; # the local node
197 224
198use base "AnyEvent::MP::Node"; 225use base "AnyEvent::MP::Node";
199 226
200sub connect { 227sub connect {
201 # we are trivially connected 228 # we are trivially connected
202} 229}
203 230
231# delay every so often to avoid recursion, also used to delay after spawn
232our $DELAY = -50;
233our @DELAY;
234our $DELAY_W;
235
236our $send_delayed = sub {
237 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
238 (shift @DELAY)->()
239 while @DELAY;
240 undef $DELAY_W;
241 $DELAY = -50;
242};
243
204sub transport_reset { 244sub transport_reset {
205 my ($self) = @_; 245 my ($self) = @_;
206 246
207 Scalar::Util::weaken $self; 247 Scalar::Util::weaken $self;
208 248
209 $self->{send} = sub { 249 $self->{send} = sub {
250 if (++$DELAY > 0) {
251 my $msg = $_[0];
252 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
253 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
254 return;
255 }
256
210 local $AnyEvent::MP::Kernel::SRCNODE = $self; 257 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
211 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 258 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
212 }; 259 };
213} 260}
214 261
215sub transport_connect { 262sub transport_connect {
216 my ($self, $tp) = @_; 263 my ($self, $tp) = @_;
217 264
218 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 265 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
219} 266}
220 267
221sub kill { 268sub kill {
222 my ($self, $port, @reason) = @_; 269 my (undef, @args) = @_;
223 270
224 delete $AnyEvent::MP::Kernel::PORT{$port}; 271 # we _always_ delay kil's, to avoid calling mon callbacks
225 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 272 # from anything but the event loop context.
226 273 $DELAY = 1;
227 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 274 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
228 or !@reason 275 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
229 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
230
231 $_->(@reason) for values %$mon;
232} 276}
233 277
234sub monitor { 278sub monitor {
235 my ($self, $portid, $cb) = @_; 279 # maybe always delay, too?
236 280 if ($DELAY_W) {
237 return $cb->(no_such_port => "cannot monitor nonexistent port") 281 my @args = @_;
238 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 282 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
239 283 return;
240 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 284 }
285 &AnyEvent::MP::Kernel::_monitor;
241} 286}
242 287
243sub unmonitor { 288sub unmonitor {
244 my ($self, $portid, $cb) = @_; 289 # no need to always delay
290 if ($DELAY_W) {
291 my @args = @_;
292 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
293 return;
294 }
245 295
246 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 296 &AnyEvent::MP::Kernel::_unmonitor;
247} 297}
248 298
249=head1 SEE ALSO 299=head1 SEE ALSO
250 300
251L<AnyEvent::MP>. 301L<AnyEvent::MP>.

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