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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.17 by root, Mon Aug 10 01:37:19 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
… …
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23sub new { 25sub new {
24 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
25 27
26 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
27}
28 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
29package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::Remote;
30 46
31use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
32 48
33sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
34 my ($self, $msg) = @_; 51 my ($self) = @_;
35 52
36 if ($self->{transport}) { 53 delete $self->{transport};
37 $self->{transport}->send ($msg); 54
38 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
39 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
59 $self->connect;
60 };
61}
62
63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error {
66 my ($self, @reason) = @_;
67
68 my $no_transport = !$self->{transport};
69
70 delete $self->{connect_w};
71 delete $self->{connect_to};
72
73 delete $self->{queue};
74 $self->transport_reset;
75
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
81 unless $no_transport;
82
83 # if we are here and are idle, we nuke ourselves
84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
85 unless $self->{transport} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
90 my ($self, $transport) = @_;
91
92 delete $self->{trial};
93
94 $self->transport_error (transport_error => $self->{id}, "switched connections")
95 if $self->{transport};
96
97 delete $self->{connect_w};
98 delete $self->{connect_to};
99
100 $self->{transport} = $transport;
101
102 my $transport_send = $transport->{send};
103
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105
106 $self->{send} = $transport_send;
107
108 $transport_send->($_)
109 for @{ delete $self->{queue} || [] };
110}
111
112sub connect {
113 my ($self) = @_;
114
115 return if $self->{transport};
116 return if $self->{connect_w};
117
118 Scalar::Util::weaken $self;
119
120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
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);
40 } else { 129 } else {
41 $self->{queue} = [$msg]; 130 # on global nodes, all bets are off now - we either know the node, or we don't
42 $self->connect; 131 unless ($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} },
169 };
43 } 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 }
197
198 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
199
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
207 my @endpoints;
208
209 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
210 @endpoints = @addresses
211 unless @endpoints;
212
213 my $endpoint = shift @endpoints;
214
215 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
216
217 $self->{trial}{$endpoint} ||= do {
218 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
219 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
220
221 AnyEvent::MP::Transport::mp_connect
222 $host, $port,
223 sub { delete $self->{trial}{$endpoint} },
224 };
225 };
44} 226}
45 227
46sub kill { 228sub kill {
47 my ($self, $port, @reason) = @_; 229 my ($self, $port, @reason) = @_;
48 230
49 $self->send (["", kil => $port, @reason]); 231 $self->{send} (["", kil => $port, @reason]);
50} 232}
51 233
52sub monitor { 234sub monitor {
53 my ($self, $portid, $cb) = @_; 235 my ($self, $portid, $cb) = @_;
54 236
55 my $list = $self->{lmon}{$portid} ||= []; 237 my $list = $self->{lmon}{$portid} ||= [];
56 238
57 $self->send (["", mon1 => $portid]) 239 $self->send (["", mon1 => $portid])
58 unless @$list; 240 unless @$list || !length $portid;
59 241
60 push @$list, $cb; 242 push @$list, $cb;
61} 243}
62 244
63sub unmonitor { 245sub unmonitor {
… …
72 $self->send (["", mon0 => $portid]); 254 $self->send (["", mon0 => $portid]);
73 delete $self->{monitor}{$portid}; 255 delete $self->{monitor}{$portid};
74 } 256 }
75} 257}
76 258
77sub set_transport { 259package AnyEvent::MP::Node::Self;
78 my ($self, $transport) = @_;
79 260
80 $self->clr_transport 261use base "AnyEvent::MP::Node";
81 if $self->{transport};
82
83 delete $self->{trial};
84 delete $self->{retry};
85 delete $self->{next_connect};
86
87 $self->{transport} = $transport;
88
89 $transport->send ($_)
90 for @{ delete $self->{queue} || [] };
91}
92
93sub fail {
94 my ($self, @reason) = @_;
95
96 delete $self->{queue};
97
98 if (my $mon = delete $self->{lmon}) {
99 $_->(@reason) for map @$_, values %$mon;
100 }
101}
102
103sub clr_transport {
104 my ($self, @reason) = @_;
105
106 delete $self->{transport};
107 $self->connect;
108}
109 262
110sub connect { 263sub connect {
264 # we are trivially connected
265}
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 $DELAY = -50;
278};
279
280sub transport_reset {
111 my ($self) = @_; 281 my ($self) = @_;
112 282
113 Scalar::Util::weaken $self; 283 Scalar::Util::weaken $self;
114 284
115 $self->{retry} ||= [split /,/, $self->{noderef}]; 285 $self->{send} = sub {
116 286 if (++$DELAY > 0) {
117 my $endpoint = shift @{ $self->{retry} }; 287 my $msg = $_[0];
118 288 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
119 if (defined $endpoint) { 289 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
120 $self->{trial}{$endpoint} ||= do {
121 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
122 or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference.");
123
124 my ($w, $g);
125
126 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
127 delete $self->{trial}{$endpoint};
128 };
129 $g = AnyEvent::MP::Transport::mp_connect
130 $host, $port,
131 sub {
132 delete $self->{trial}{$endpoint}
133 unless @_;
134 $g = shift;
135 };
136 ; 290 return;
137
138 [$w, \$g]
139 }; 291 }
140 } else { 292
141 $self->fail (transport_error => $self->{noderef}, "unable to connect"); 293 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
294 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
142 } 295 };
143
144 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
145 delete $self->{retry};
146 $self->connect;
147 };
148} 296}
149 297
150package AnyEvent::MP::Node::Slave; 298sub transport_connect {
151
152use base "AnyEvent::MP::Node::Direct";
153
154sub connect {
155 my ($self) = @_; 299 my ($self, $tp) = @_;
156 300
157 $self->fail (transport_error => $self->{noderef}, "unable to connect to slave node"); 301 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
158}
159
160package AnyEvent::MP::Node::Self;
161
162use base "AnyEvent::MP::Node";
163
164sub set_transport {
165 Carp::confess "FATAL error, set_transport was called on local node";
166}
167
168sub send {
169 local $AnyEvent::MP::Base::SRCNODE = $_[0];
170 AnyEvent::MP::Base::_inject (@{ $_[1] });
171} 302}
172 303
173sub kill { 304sub kill {
174 my ($self, $port, @reason) = @_; 305 my (undef, @args) = @_;
175 306
176 delete $AnyEvent::MP::Base::PORT{$port}; 307 # we _always_ delay kil's, to avoid calling mon callbacks
177 delete $AnyEvent::MP::Base::PORT_DATA{$port}; 308 # from anything but the event loop context.
178 309 $DELAY = 1;
179 my $mon = delete $AnyEvent::MP::Base::LMON{$port} 310 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
180 or !@reason 311 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
181 or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason");
182
183 $_->(@reason) for values %$mon;
184} 312}
185 313
186sub monitor { 314sub monitor {
187 my ($self, $portid, $cb) = @_; 315 # maybe always delay, too?
188 316 if ($DELAY_W) {
189 return $cb->(no_such_port => "cannot monitor nonexistent port") 317 my @args = @_;
190 unless exists $AnyEvent::MP::Base::PORT{$portid}; 318 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
191 319 return;
192 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 320 }
321 &AnyEvent::MP::Kernel::_monitor;
193} 322}
194 323
195sub unmonitor { 324sub unmonitor {
196 my ($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 }
197 331
198 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 332 &AnyEvent::MP::Kernel::_unmonitor;
199} 333}
200 334
201=head1 SEE ALSO 335=head1 SEE ALSO
202 336
203L<AnyEvent::MP>. 337L<AnyEvent::MP>.

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