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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.1 by root, Fri Jul 31 20:55:46 2009 UTC vs.
Revision 1.59 by root, Sat Mar 3 11:38:43 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 10
11This is an internal utility module, horrible to look at, so don't.
12
11=cut 13=cut
12 14
13package AnyEvent::MP::Node; 15package AnyEvent::MP::Node;
14 16
15use common::sense; 17use common::sense;
16 18
17use AE (); 19use AE ();
20use AnyEvent::Util ();
18use AnyEvent::Socket (); 21use AnyEvent::Socket ();
19 22
20use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
21 24
22use base Exporter::;
23
24our $VERSION = '0.0';
25
26sub new { 25sub new {
27 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
28 27
29 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
30}
31 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
32package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::Remote;
33 46
34use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
35 48
36sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
37 my ($self, $msg) = @_; 51 my ($self) = @_;
38 52
39 if ($self->{transport}) { 53 delete $self->{transport};
40 $self->{transport}->send ($msg); 54
41 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
42 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
43 } else {
44 $self->{queue} = [$msg];
45 $self->connect; 59 $self->connect;
46 } 60 };
47} 61}
48 62
63# called each time we fail to establish a connection,
64# or the existing connection failed
49sub set_transport { 65sub transport_error {
66 my ($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} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
50 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
51 91
52 delete $self->{trial}; 92 delete $self->{trial};
93
94 $self->transport_error (transport_error => $self->{id}, "switched connections")
95 if $self->{transport};
96
53 delete $self->{next_connect}; 97 delete $self->{connect_w};
98 delete $self->{connect_to};
54 99
55 if (
56 exists $self->{remote_uniq}
57 && $self->{remote_uniq} ne $transport->{remote_uniq}
58 ) {
59 # uniq changed, drop queue
60 delete $self->{queue};
61 #TODO: "DOWN"
62 }
63
64 $self->{remote_uniq} = $transport->{remote_uniq};
65 $self->{transport} = $transport; 100 $self->{transport} = $transport;
66 101
102 my $transport_send = $transport->{send};
103
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105
106 $self->{send} = $transport_send;
107
67 $transport->send ($_) 108 $transport_send->($_)
68 for @{ delete $self->{queue} || [] }; 109 for @{ delete $self->{queue} || [] };
69}
70
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75 warn "clr_transport\n";
76} 110}
77 111
78sub connect { 112sub connect {
79 my ($self) = @_; 113 my ($self) = @_;
80 114
115 return if $self->{transport};
116 return if $self->{connect_w};
117
81 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
82 119
83 unless (exists $self->{n_noderef}) { 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
84 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { 121 $self->transport_error (transport_error => $self->{id}, "unable to connect");
85 $self or return;
86 my $noderef = shift->recv;
87
88 $self->{n_noderef} = $noderef;
89
90 $AnyEvent::MP::NODE{$_} = $self
91 for split /,/, $noderef;
92
93 $self->connect;
94 });
95 return;
96 } 122 };
97 123
98 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 124 # maybe @$addresses?
125 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
99 126
100 my $endpoint = shift @{ $self->{retry} }; 127 if ($addresses) {
128 $self->connect_to ($addresses);
129 } else {
130 # on global nodes, all bets are off now - we either know the node, or we don't
131 unless ($AnyEvent::MP::Kernel::GLOBAL) {
132 AnyEvent::MP::Kernel::g_find ($self->{id});
133 }
134 }
135}
101 136
102 if (defined $endpoint) { 137sub connect_to {
138 my ($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
103 $self->{trial}{$endpoint} ||= do { 162 $self->{trial}{$endpoint} ||= do {
104 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 163 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
105 or return; 164 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
106 165
107 my ($w, $g);
108
109 $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub {
110 delete $self->{trial}{$endpoint};
111 };
112 $g = AnyEvent::MP::Transport::mp_connect 166 AnyEvent::MP::Transport::mp_connect
113 $host, $port, 167 $host, $port,
114 sub {
115 delete $self->{trial}{$endpoint} 168 sub { delete $self->{trial}{$endpoint} },
116 unless @_;
117 $g = shift;
118 };
119 ;
120
121 [$w, \$g]
122 }; 169 };
123 } else {
124 delete $self->{retry};
125 } 170 };
171}
126 172
127 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { 173sub connect {
128 $self->connect; 174 my ($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;
129 }; 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 };
226}
227
228sub kill {
229 my ($self, $port, @reason) = @_;
230
231 $self->{send} (["", kil => $port, @reason]);
232}
233
234sub monitor {
235 my ($self, $portid, $cb) = @_;
236
237 my $list = $self->{lmon}{$portid} ||= [];
238
239 $self->send (["", mon1 => $portid])
240 unless @$list || !length $portid;
241
242 push @$list, $cb;
243}
244
245sub unmonitor {
246 my ($self, $portid, $cb) = @_;
247
248 my $list = $self->{lmon}{$portid}
249 or return;
250
251 @$list = grep $_ != $cb, @$list;
252
253 unless (@$list) {
254 $self->send (["", mon0 => $portid]);
255 delete $self->{monitor}{$portid};
256 }
130} 257}
131 258
132package AnyEvent::MP::Node::Self; 259package AnyEvent::MP::Node::Self;
133 260
134use base "AnyEvent::MP::Node"; 261use base "AnyEvent::MP::Node";
135 262
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
272sub _send_delayed {
273 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
274 (shift @DELAY)->()
275 while @DELAY;
276 undef $DELAY_W;
277 $DELAY = -50;
278}
279
136sub set_transport { 280sub transport_reset {
137 die "FATAL error, set_transport was called"; 281 my ($self) = @_;
138}
139 282
140sub send { 283 Scalar::Util::weaken $self;
141 die "self-send not implemented yet\n";#d# 284
285 $self->{send} = sub {
286 if ($DELAY++ >= 0) {
287 my $msg = $_[0];
288 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
289 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
290 return;
291 }
292
293 local $AnyEvent::MP::Kernel::SRCNODE = $self;
294 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
295 };
296}
297
298sub transport_connect {
299 my ($self, $tp) = @_;
300
301 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
302}
303
304sub kill {
305 my (undef, @args) = @_;
306
307 # we _always_ delay kil's, to avoid calling mon callbacks
308 # from anything but the event loop context.
309 $DELAY = 1;
310 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
311 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
312}
313
314sub monitor {
315 # maybe always delay, too?
316 if ($DELAY_W) {
317 my @args = @_;
318 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
319 return;
320 }
321 &AnyEvent::MP::Kernel::_monitor;
322}
323
324sub unmonitor {
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 }
331
332 &AnyEvent::MP::Kernel::_unmonitor;
142} 333}
143 334
144=head1 SEE ALSO 335=head1 SEE ALSO
145 336
146L<AnyEvent>. 337L<AnyEvent::MP>.
147 338
148=head1 AUTHOR 339=head1 AUTHOR
149 340
150 Marc Lehmann <schmorp@schmorp.de> 341 Marc Lehmann <schmorp@schmorp.de>
151 http://home.schmorp.de/ 342 http://home.schmorp.de/

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