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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.20 by root, Thu Aug 13 00:23:36 2009 UTC vs.
Revision 1.60 by root, Wed Mar 21 15:22:16 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 ($self, $noderef) = @_; 26 my ($self, $id) = @_;
25 27
26 $self = bless { noderef => $noderef }, $self; 28 $self = bless { id => $id }, $self;
27 29
30 $self->init;
28 $self->transport_reset; 31 $self->transport_reset;
29 32
30 $self 33 $self
34}
35
36sub init {
37 #
31} 38}
32 39
33sub send { 40sub send {
34 &{ shift->{send} } 41 &{ shift->{send} }
35} 42}
36 43
44# nodes reachable via the network
37package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::Remote;
38 46
39use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
40 48
41# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
42sub transport_reset { 50sub transport_reset {
… …
50 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
51 $self->connect; 59 $self->connect;
52 }; 60 };
53} 61}
54 62
55# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
56sub transport_error { 65sub transport_error {
57 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
58 67
59 $self->{transport} 68 my $no_transport = !$self->{transport};
60 or return; 69
70 delete $self->{connect_w};
71 delete $self->{connect_to};
61 72
62 delete $self->{queue}; 73 delete $self->{queue};
63 $self->transport_reset; 74 $self->transport_reset;
64 75
65 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason);
66
67 if (my $mon = delete $self->{lmon}) { 76 if (my $mon = delete $self->{lmon}) {
68 $_->(@reason) for map @$_, values %$mon; 77 $_->(@reason) for map @$_, values %$mon;
69 } 78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
70} 86}
71 87
72# called after handshake was successful 88# called after handshake was successful
73sub transport_connect { 89sub transport_connect {
74 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
75 91
92 delete $self->{trial};
93
76 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
77 if $self->{transport}; 95 if $self->{transport};
78 96
79 delete $self->{connect_w}; 97 delete $self->{connect_w};
80 delete $self->{connect_to}; 98 delete $self->{connect_to};
81 99
82 $self->{transport} = $transport; 100 $self->{transport} = $transport;
83 101
84 my $transport_send = $transport->can ("send"); 102 my $transport_send = $transport->{send};
85
86 $self->{send} = sub {
87 $transport_send->($transport, $_[0]);
88 };
89 103
90 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
91 105
106 $self->{send} = $transport_send;
107
92 $transport->send ($_) 108 $transport_send->($_)
93 for @{ delete $self->{queue} || [] }; 109 for @{ delete $self->{queue} || [] };
94} 110}
95 111
96sub connect { 112sub connect {
97 my ($self) = @_; 113 my ($self) = @_;
98 114
115 return if $self->{transport};
116 return if $self->{connect_w};
117
99 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
100 119
101 $self->{connect_to} ||= AE::timer 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
102 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
103 0,
104 sub {
105 $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); 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);
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}
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} },
106 }; 169 };
170 };
171}
107 172
108 unless ($self->{connect_w}) { 173sub connect {
174 my ($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
109 my @endpoints; 207 my @endpoints;
110 my %trial;
111 208
112 $self->{connect_w} = AE::timer 209 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
113 0, 210 @endpoints = @addresses
114 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
115 sub {
116 @endpoints = split /,/, $self->{noderef}
117 unless @endpoints; 211 unless @endpoints;
118 212
119 my $endpoint = shift @endpoints; 213 my $endpoint = shift @endpoints;
120 214
215 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
216
121 $trial{$endpoint} ||= do { 217 $self->{trial}{$endpoint} ||= do {
122 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 218 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
123 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference."); 219 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
124 220
125 AnyEvent::MP::Transport::mp_connect 221 AnyEvent::MP::Transport::mp_connect
126 $host, $port, 222 $host, $port,
127 sub { delete $trial{$endpoint} } 223 sub { delete $self->{trial}{$endpoint} },
128 ;
129 };
130 }
131 ; 224 };
132 } 225 };
133} 226}
134 227
135sub kill { 228sub kill {
136 my ($self, $port, @reason) = @_; 229 my ($self, $port, @reason) = @_;
137 230
138 $self->send (["", kil => $port, @reason]); 231 $self->{send} (["", kil => $port, @reason]);
139} 232}
140 233
141sub monitor { 234sub monitor {
142 my ($self, $portid, $cb) = @_; 235 my ($self, $portid, $cb) = @_;
143 236
144 my $list = $self->{lmon}{$portid} ||= []; 237 my $list = $self->{lmon}{$portid} ||= [];
145 238
146 $self->send (["", mon1 => $portid]) 239 $self->send (["", mon1 => $portid])
147 unless @$list; 240 unless @$list || !length $portid;
148 241
149 push @$list, $cb; 242 push @$list, $cb;
150} 243}
151 244
152sub unmonitor { 245sub unmonitor {
… …
161 $self->send (["", mon0 => $portid]); 254 $self->send (["", mon0 => $portid]);
162 delete $self->{monitor}{$portid}; 255 delete $self->{monitor}{$portid};
163 } 256 }
164} 257}
165 258
166package AnyEvent::MP::Node::Direct;
167
168use base "AnyEvent::MP::Node::External";
169
170package AnyEvent::MP::Node::Indirect;
171
172use base "AnyEvent::MP::Node::Direct";
173
174sub connect {
175 my ($self) = @_;
176
177 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
178}
179
180package AnyEvent::MP::Node::Self; 259package AnyEvent::MP::Node::Self;
181 260
182use base "AnyEvent::MP::Node"; 261use base "AnyEvent::MP::Node";
183 262
184sub connect { 263sub connect {
185 # we are trivially connected 264 # we are trivially connected
186} 265}
187 266
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 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
274 (shift @DELAY)->()
275 while @DELAY;
276 undef $DELAY_W;
277 $DELAY = -50;
278}
279
188sub transport_reset { 280sub transport_reset {
189 my ($self) = @_; 281 my ($self) = @_;
190 282
191 Scalar::Util::weaken $self; 283 Scalar::Util::weaken $self;
192 284
193 $self->{send} = sub { 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
194 local $AnyEvent::MP::Kernel::SRCNODE = $self; 293 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
195 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 294 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
196 }; 295 };
197} 296}
198 297
298sub transport_connect {
299 my ($self, $tp) = @_;
300
301 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
302}
303
199sub kill { 304sub kill {
200 my ($self, $port, @reason) = @_; 305 my (undef, @args) = @_;
201 306
202 delete $AnyEvent::MP::Kernel::PORT{$port}; 307 # we _always_ delay kil's, to avoid calling mon callbacks
203 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 308 # from anything but the event loop context.
204 309 $DELAY = 1;
205 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 310 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
206 or !@reason 311 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
207 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
208
209 $_->(@reason) for values %$mon;
210} 312}
211 313
212sub monitor { 314sub monitor {
213 my ($self, $portid, $cb) = @_; 315 # maybe always delay, too?
214 316 if ($DELAY_W) {
215 return $cb->(no_such_port => "cannot monitor nonexistent port") 317 my @args = @_;
216 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 318 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
217 319 return;
218 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 320 }
321 &AnyEvent::MP::Kernel::_monitor;
219} 322}
220 323
221sub unmonitor { 324sub unmonitor {
222 my ($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 }
223 331
224 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 332 &AnyEvent::MP::Kernel::_unmonitor;
225} 333}
226 334
227=head1 SEE ALSO 335=head1 SEE ALSO
228 336
229L<AnyEvent::MP>. 337L<AnyEvent::MP>.

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