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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.25 by root, Sat Aug 15 15:08:07 2009 UTC vs.
Revision 1.65 by root, Fri Mar 23 21:16:36 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; # base class for nodes
14 16
15use common::sense; 17use common::sense;
16 18
17use AE ();
18use AnyEvent::Util (); 19use AnyEvent ();
19use AnyEvent::Socket (); 20use AnyEvent::Socket ();
20 21
21use AnyEvent::MP::Transport (); 22use AnyEvent::MP::Transport ();
22 23
23sub new { 24sub 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
35sub init {
36 #
31} 37}
32 38
33sub send { 39sub send {
34 &{ shift->{send} } 40 &{ shift->{send} }
35} 41}
36 42
37package AnyEvent::MP::Node::External; 43# nodes reachable via the network
44package AnyEvent::MP::Node::Remote; # a remote node
38 45
39use base "AnyEvent::MP::Node"; 46use base "AnyEvent::MP::Node";
40 47
41# called at init time, mostly sets {send} 48# called at init time, mostly sets {send}
42sub transport_reset { 49sub 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 $self->{autoconnect};
56} 60}
57 61
58# called only after successful handshake 62# called each time we fail to establish a connection,
63# or the existing connection failed
59sub transport_error { 64sub transport_error {
60 my ($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} || $self->{connect_to};
76} 85}
77 86
78# called after handshake was successful 87# called after handshake was successful
79sub transport_connect { 88sub transport_connect {
80 my ($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 $self->{queue} || [] };
104} 109}
105 110
106sub connect { 111sub connect {
107 my ($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
136sub 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 $AnyEvent::MP::Kernel::WARN->(1, "$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
147sub kill { 172sub kill {
148 my ($self, $port, @reason) = @_; 173 my ($self, $port, @reason) = @_;
149 174
150 $self->send (["", kil => $port, @reason]); 175 $self->{send} (["", kil => $port, @reason]);
151} 176}
152 177
153sub monitor { 178sub monitor {
154 my ($self, $portid, $cb) = @_; 179 my ($self, $portid, $cb) = @_;
155 180
… …
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
178package AnyEvent::MP::Node::Direct; 203package AnyEvent::MP::Node::Self; # the local node
179 204
180use base "AnyEvent::MP::Node::External";
181
182package AnyEvent::MP::Node::Indirect;
183
184use base "AnyEvent::MP::Node::Direct"; 205use base "AnyEvent::MP::Node";
185 206
186sub master { 207sub 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
212our $DELAY = -50;
213our @DELAY;
214our $DELAY_W;
215
216our $send_delayed = sub {
217 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
218 (shift @DELAY)->()
219 while @DELAY;
220 undef $DELAY_W;
221 $DELAY = -50;
222};
193 223
194sub transport_reset { 224sub transport_reset {
195 my ($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, snd => $noderef, @_;
212 };
213 }
214}
215
216sub connect {
217 my ($self) = @_;
218
219 #TODO#
220# # ask for a connection, #TODO# rate-limit this somehow
221# snd $self->master, relay => $self->{noderef}, connect_node => $AnyEvent::MP::Kernel::NODE;
222}
223
224package AnyEvent::MP::Node::Self;
225
226use base "AnyEvent::MP::Node";
227
228sub connect {
229 # we are trivially connected
230}
231
232sub transport_reset {
233 my ($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 (@{ $_[0] });
240 }; 239 };
241} 240}
242 241
242sub transport_connect {
243 my ($self, $tp) = @_;
244
245 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
246}
247
243sub kill { 248sub kill {
244 my ($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->(2, "unmonitored local port $port died with reason: @reason");
252
253 $_->(@reason) for values %$mon;
254} 256}
255 257
256sub monitor { 258sub 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} = $cb; 264 }
265 &AnyEvent::MP::Kernel::_monitor;
263} 266}
264 267
265sub unmonitor { 268sub unmonitor {
266 my ($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
273L<AnyEvent::MP>. 281L<AnyEvent::MP>.

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