1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | AnyEvent::MP::Node - a single processing node (CPU/process...) |
3 | AnyEvent::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 | |
|
|
11 | This is an internal utility module, horrible to look at, so don't. |
|
|
12 | |
11 | =cut |
13 | =cut |
12 | |
14 | |
13 | package AnyEvent::MP::Node; |
15 | package AnyEvent::MP::Node; # base class for nodes |
14 | |
16 | |
15 | use common::sense; |
17 | use common::sense; |
16 | |
18 | |
17 | use AE (); |
|
|
18 | use AnyEvent::Util (); |
19 | use AnyEvent (); |
19 | use AnyEvent::Socket (); |
20 | use AnyEvent::Socket (); |
20 | |
21 | |
21 | use AnyEvent::MP::Transport (); |
22 | use AnyEvent::MP::Transport (); |
22 | |
23 | |
23 | sub new { |
24 | sub new { |
24 | my ($self, $noderef) = @_; |
25 | my ($self, $id) = @_; |
25 | |
26 | |
26 | $self = bless { noderef => $noderef }, $self; |
27 | $self = bless { id => $id }, $self; |
27 | |
28 | |
|
|
29 | $self->init; |
28 | $self->transport_reset; |
30 | $self->transport_reset; |
29 | |
31 | |
30 | $self |
32 | $self |
|
|
33 | } |
|
|
34 | |
|
|
35 | sub init { |
|
|
36 | # |
31 | } |
37 | } |
32 | |
38 | |
33 | sub send { |
39 | sub send { |
34 | &{ shift->{send} } |
40 | &{ shift->{send} } |
35 | } |
41 | } |
36 | |
42 | |
37 | package AnyEvent::MP::Node::External; |
43 | # nodes reachable via the network |
|
|
44 | package AnyEvent::MP::Node::Remote; # a remote node |
38 | |
45 | |
39 | use base "AnyEvent::MP::Node"; |
46 | use base "AnyEvent::MP::Node"; |
40 | |
47 | |
41 | # called at init time, mostly sets {send} |
48 | # called at init time, mostly sets {send} |
42 | sub transport_reset { |
49 | sub transport_reset { |
… | |
… | |
48 | |
55 | |
49 | $self->{send} = sub { |
56 | $self->{send} = sub { |
50 | push @{$self->{queue}}, shift; |
57 | push @{$self->{queue}}, shift; |
51 | $self->connect; |
58 | $self->connect; |
52 | }; |
59 | }; |
53 | |
|
|
54 | $self->connect |
|
|
55 | if $self->{autoconnect}; |
|
|
56 | } |
60 | } |
57 | |
61 | |
58 | # called only after successful handshake |
62 | # called each time we fail to establish a connection, |
|
|
63 | # or the existing connection failed |
59 | sub transport_error { |
64 | sub transport_error { |
60 | my ($self, @reason) = @_; |
65 | my ($self, @reason) = @_; |
61 | |
66 | |
62 | my $no_transport = !$self->{transport}; |
67 | my $no_transport = !$self->{transport}; |
63 | |
68 | |
… | |
… | |
65 | delete $self->{connect_to}; |
70 | delete $self->{connect_to}; |
66 | |
71 | |
67 | delete $self->{queue}; |
72 | delete $self->{queue}; |
68 | $self->transport_reset; |
73 | $self->transport_reset; |
69 | |
74 | |
|
|
75 | if (my $mon = delete $self->{lmon}) { |
|
|
76 | $_->(@reason) for map @$_, values %$mon; |
|
|
77 | } |
|
|
78 | |
70 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
79 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
71 | unless $no_transport; |
80 | unless $no_transport; |
72 | |
81 | |
73 | if (my $mon = delete $self->{lmon}) { |
82 | # if we are here and are idle, we nuke ourselves |
74 | $_->(@reason) for map @$_, values %$mon; |
83 | delete $AnyEvent::MP::Kernel::NODE{$self->{id}} |
75 | } |
84 | unless $self->{transport} || $self->{connect_to}; |
76 | } |
85 | } |
77 | |
86 | |
78 | # called after handshake was successful |
87 | # called after handshake was successful |
79 | sub transport_connect { |
88 | sub transport_connect { |
80 | my ($self, $transport) = @_; |
89 | my ($self, $transport) = @_; |
81 | |
90 | |
82 | # first connect with a master node |
91 | delete $self->{trial}; |
83 | $AnyEvent::MP::Kernel::SLAVE->($self) |
|
|
84 | if ref $AnyEvent::MP::Kernel::SLAVE; |
|
|
85 | |
92 | |
86 | $self->transport_error (transport_error => "switched connections") |
93 | $self->transport_error (transport_error => $self->{id}, "switched connections") |
87 | if $self->{transport}; |
94 | if $self->{transport}; |
88 | |
95 | |
89 | delete $self->{connect_w}; |
96 | delete $self->{connect_w}; |
90 | delete $self->{connect_to}; |
97 | delete $self->{connect_to}; |
91 | |
98 | |
92 | $self->{transport} = $transport; |
99 | $self->{transport} = $transport; |
93 | |
100 | |
94 | my $transport_send = $transport->can ("send"); |
101 | my $transport_send = $transport->{send}; |
95 | |
|
|
96 | $self->{send} = sub { |
|
|
97 | $transport_send->($transport, $_[0]); |
|
|
98 | }; |
|
|
99 | |
102 | |
100 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
103 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
101 | |
104 | |
|
|
105 | $self->{send} = $transport_send; |
|
|
106 | |
102 | $transport->send ($_) |
107 | $transport_send->($_) |
103 | for @{ delete $self->{queue} || [] }; |
108 | for @{ delete $self->{queue} || [] }; |
104 | } |
109 | } |
105 | |
110 | |
106 | sub connect { |
111 | sub connect { |
107 | my ($self) = @_; |
112 | my ($self) = @_; |
108 | |
113 | |
109 | return if $self->{transport}; |
114 | return if $self->{transport}; |
|
|
115 | return if $self->{connect_w}; |
110 | |
116 | |
111 | Scalar::Util::weaken $self; |
117 | Scalar::Util::weaken $self; |
112 | |
118 | |
113 | $self->{connect_to} ||= AE::timer |
119 | $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub { |
114 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
|
|
115 | 0, |
|
|
116 | sub { |
|
|
117 | $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); |
120 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
|
|
121 | }; |
|
|
122 | |
|
|
123 | # maybe @$addresses? |
|
|
124 | my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}}; |
|
|
125 | |
|
|
126 | if ($addresses) { |
|
|
127 | $self->connect_to ($addresses); |
|
|
128 | } else { |
|
|
129 | # on global nodes, all bets are off now - we either know the node, or we don't |
|
|
130 | unless ($AnyEvent::MP::Kernel::GLOBAL) { |
|
|
131 | AnyEvent::MP::Kernel::g_find ($self->{id}); |
|
|
132 | } |
|
|
133 | } |
|
|
134 | } |
|
|
135 | |
|
|
136 | sub connect_to { |
|
|
137 | my ($self, $addresses) = @_; |
|
|
138 | |
|
|
139 | return if $self->{transport}; |
|
|
140 | return if $self->{connect_w}; |
|
|
141 | |
|
|
142 | return unless @$addresses; |
|
|
143 | |
|
|
144 | AE::log 9 => "connecting to $self->{id} with [@$addresses]"; |
|
|
145 | |
|
|
146 | my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
|
|
147 | my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; |
|
|
148 | |
|
|
149 | $interval = ($monitor - $interval) / @$addresses |
|
|
150 | if ($monitor - $interval) / @$addresses < $interval; |
|
|
151 | |
|
|
152 | $interval = 0.4 if $interval < 0.4; |
|
|
153 | |
|
|
154 | my @endpoints = reverse @$addresses; |
|
|
155 | |
|
|
156 | $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub { |
|
|
157 | my $endpoint = pop @endpoints; |
|
|
158 | |
|
|
159 | AE::log 9 => "connecting to $self->{id} at $endpoint"; |
|
|
160 | |
|
|
161 | $self->{trial}{$endpoint} ||= do { |
|
|
162 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
|
|
163 | or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference."; |
|
|
164 | |
|
|
165 | AnyEvent::MP::Transport::mp_connect |
|
|
166 | $host, $port, |
|
|
167 | sub { delete $self->{trial}{$endpoint} }, |
118 | }; |
168 | }; |
119 | |
|
|
120 | unless ($self->{connect_w}) { |
|
|
121 | my @endpoints; |
|
|
122 | my %trial; |
|
|
123 | |
|
|
124 | $self->{connect_w} = AE::timer |
|
|
125 | 0, |
|
|
126 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
|
|
127 | sub { |
|
|
128 | @endpoints = split /,/, $self->{noderef} |
|
|
129 | unless @endpoints; |
|
|
130 | |
|
|
131 | my $endpoint = shift @endpoints; |
|
|
132 | |
|
|
133 | $trial{$endpoint} ||= do { |
|
|
134 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
|
|
135 | or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference."); |
|
|
136 | |
|
|
137 | AnyEvent::MP::Transport::mp_connect |
|
|
138 | $host, $port, |
|
|
139 | sub { delete $trial{$endpoint} } |
|
|
140 | ; |
|
|
141 | }; |
|
|
142 | } |
|
|
143 | ; |
|
|
144 | } |
169 | }; |
145 | } |
170 | } |
146 | |
171 | |
147 | sub kill { |
172 | sub kill { |
148 | my ($self, $port, @reason) = @_; |
173 | my ($self, $port, @reason) = @_; |
149 | |
174 | |
150 | $self->send (["", kil => $port, @reason]); |
175 | $self->{send} (["", kil => $port, @reason]); |
151 | } |
176 | } |
152 | |
177 | |
153 | sub monitor { |
178 | sub monitor { |
154 | my ($self, $portid, $cb) = @_; |
179 | my ($self, $portid, $cb) = @_; |
155 | |
180 | |
156 | my $list = $self->{lmon}{$portid} ||= []; |
181 | my $list = $self->{lmon}{$portid} ||= []; |
157 | |
182 | |
158 | $self->send (["", mon1 => $portid]) |
183 | $self->send (["", mon1 => $portid]) |
159 | unless @$list; |
184 | unless @$list || !length $portid; |
160 | |
185 | |
161 | push @$list, $cb; |
186 | push @$list, $cb; |
162 | } |
187 | } |
163 | |
188 | |
164 | sub unmonitor { |
189 | sub unmonitor { |
… | |
… | |
173 | $self->send (["", mon0 => $portid]); |
198 | $self->send (["", mon0 => $portid]); |
174 | delete $self->{monitor}{$portid}; |
199 | delete $self->{monitor}{$portid}; |
175 | } |
200 | } |
176 | } |
201 | } |
177 | |
202 | |
178 | package AnyEvent::MP::Node::Direct; |
203 | package AnyEvent::MP::Node::Self; # the local node |
179 | |
204 | |
180 | use base "AnyEvent::MP::Node::External"; |
|
|
181 | |
|
|
182 | package AnyEvent::MP::Node::Indirect; |
|
|
183 | |
|
|
184 | use base "AnyEvent::MP::Node::Direct"; |
205 | use base "AnyEvent::MP::Node"; |
185 | |
206 | |
186 | sub master { |
207 | sub connect { |
187 | my ($self) = @_; |
208 | # we are trivially connected |
188 | |
|
|
189 | my (undef, $master) = split /\@/, $self->{noderef}, 2; |
|
|
190 | $master =~ s/!/,/g; |
|
|
191 | $master |
|
|
192 | } |
209 | } |
|
|
210 | |
|
|
211 | # delay every so often to avoid recursion, also used to delay after spawn |
|
|
212 | our $DELAY = -50; |
|
|
213 | our @DELAY; |
|
|
214 | our $DELAY_W; |
|
|
215 | |
|
|
216 | our $send_delayed = sub { |
|
|
217 | $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE; |
|
|
218 | (shift @DELAY)->() |
|
|
219 | while @DELAY; |
|
|
220 | undef $DELAY_W; |
|
|
221 | $DELAY = -50; |
|
|
222 | }; |
193 | |
223 | |
194 | sub transport_reset { |
224 | sub transport_reset { |
195 | my ($self) = @_; |
225 | my ($self) = @_; |
196 | |
226 | |
197 | if ($self->{transport}) { |
|
|
198 | # as an optimisation, immediately nuke slave nodes |
|
|
199 | delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}}; |
|
|
200 | } else { |
|
|
201 | $self->SUPER::transport_reset; |
|
|
202 | return;#d##TODO# |
|
|
203 | |
|
|
204 | my $noderef = $self->{noderef}; |
|
|
205 | my $master = $self->master; |
|
|
206 | |
|
|
207 | # slave nodes are so cool - we can always send to them :) |
|
|
208 | |
|
|
209 | $self->{send} = sub { |
|
|
210 | $self->connect; |
|
|
211 | snd $master, relay => $noderef, @_; |
|
|
212 | }; |
|
|
213 | } |
|
|
214 | } |
|
|
215 | |
|
|
216 | sub connect { |
|
|
217 | my ($self) = @_; |
|
|
218 | |
|
|
219 | #TODO# |
|
|
220 | # # ask for a connection, #TODO# rate-limit this somehow |
|
|
221 | # snd $self->master, relay => $self->{noderef}, connect_node => $AnyEvent::MP::Kernel::NODE; |
|
|
222 | } |
|
|
223 | |
|
|
224 | package AnyEvent::MP::Node::Self; |
|
|
225 | |
|
|
226 | use base "AnyEvent::MP::Node"; |
|
|
227 | |
|
|
228 | sub connect { |
|
|
229 | # we are trivially connected |
|
|
230 | } |
|
|
231 | |
|
|
232 | sub transport_reset { |
|
|
233 | my ($self) = @_; |
|
|
234 | |
|
|
235 | Scalar::Util::weaken $self; |
227 | Scalar::Util::weaken $self; |
236 | |
228 | |
237 | $self->{send} = sub { |
229 | $self->{send} = sub { |
|
|
230 | if (++$DELAY > 0) { |
|
|
231 | my $msg = $_[0]; |
|
|
232 | push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; |
|
|
233 | $DELAY_W ||= AE::timer 0, 0, $send_delayed; |
|
|
234 | return; |
|
|
235 | } |
|
|
236 | |
238 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
237 | local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE; |
239 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
238 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
240 | }; |
239 | }; |
241 | } |
240 | } |
242 | |
241 | |
|
|
242 | sub transport_connect { |
|
|
243 | my ($self, $tp) = @_; |
|
|
244 | |
|
|
245 | AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"; |
|
|
246 | } |
|
|
247 | |
243 | sub kill { |
248 | sub kill { |
244 | my ($self, $port, @reason) = @_; |
249 | my (undef, @args) = @_; |
245 | |
250 | |
246 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
251 | # we _always_ delay kil's, to avoid calling mon callbacks |
247 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
252 | # from anything but the event loop context. |
248 | |
253 | $DELAY = 1; |
249 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
254 | push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) }; |
250 | or !@reason |
255 | $DELAY_W ||= AE::timer 0, 0, $send_delayed; |
251 | or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason"); |
|
|
252 | |
|
|
253 | $_->(@reason) for values %$mon; |
|
|
254 | } |
256 | } |
255 | |
257 | |
256 | sub monitor { |
258 | sub monitor { |
257 | my ($self, $portid, $cb) = @_; |
259 | # maybe always delay, too? |
258 | |
260 | if ($DELAY_W) { |
259 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
261 | my @args = @_; |
260 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
262 | push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) }; |
261 | |
263 | return; |
262 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
264 | } |
|
|
265 | &AnyEvent::MP::Kernel::_monitor; |
263 | } |
266 | } |
264 | |
267 | |
265 | sub unmonitor { |
268 | sub unmonitor { |
266 | my ($self, $portid, $cb) = @_; |
269 | # no need to always delay |
|
|
270 | if ($DELAY_W) { |
|
|
271 | my @args = @_; |
|
|
272 | push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) }; |
|
|
273 | return; |
|
|
274 | } |
267 | |
275 | |
268 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
276 | &AnyEvent::MP::Kernel::_unmonitor; |
269 | } |
277 | } |
270 | |
278 | |
271 | =head1 SEE ALSO |
279 | =head1 SEE ALSO |
272 | |
280 | |
273 | L<AnyEvent::MP>. |
281 | L<AnyEvent::MP>. |