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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.27 by root, Thu Aug 27 07:12:48 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 ($self, $noderef) = @_; 26 my ($self, $id) = @_;
25 27
26 $self = bless { noderef => $noderef }, $self; 28 $self = bless { id => $id }, $self;
27 29
28 $self->init; 30 $self->init;
29 $self->transport_reset; 31 $self->transport_reset;
30 32
31 $self 33 $self
… …
38sub send { 40sub send {
39 &{ shift->{send} } 41 &{ shift->{send} }
40} 42}
41 43
42# nodes reachable via the network 44# nodes reachable via the network
43package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::Remote;
44 46
45use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
46 48
47# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
48sub transport_reset { 50sub transport_reset {
… …
54 56
55 $self->{send} = sub { 57 $self->{send} = sub {
56 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
57 $self->connect; 59 $self->connect;
58 }; 60 };
59
60 $self->connect
61 if $self->{autoconnect};
62} 61}
63 62
64# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error { 65sub transport_error {
66 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
67 67
68 my $no_transport = !$self->{transport}; 68 my $no_transport = !$self->{transport};
69 69
… …
71 delete $self->{connect_to}; 71 delete $self->{connect_to};
72 72
73 delete $self->{queue}; 73 delete $self->{queue};
74 $self->transport_reset; 74 $self->transport_reset;
75 75
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
78 }
79
76 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
77 unless $no_transport; 81 unless $no_transport;
78 82
79 if (my $mon = delete $self->{lmon}) { 83 # if we are here and are idle, we nuke ourselves
80 $_->(@reason) for map @$_, values %$mon; 84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
81 } 85 unless $self->{transport} || $self->{connect_to};
82} 86}
83 87
84# called after handshake was successful 88# called after handshake was successful
85sub transport_connect { 89sub transport_connect {
86 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
87 91
92 delete $self->{trial};
93
88 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
89 if $self->{transport}; 95 if $self->{transport};
90 96
91 delete $self->{connect_w}; 97 delete $self->{connect_w};
92 delete $self->{connect_to}; 98 delete $self->{connect_to};
93 99
94 $self->{transport} = $transport; 100 $self->{transport} = $transport;
95 101
96 my $transport_send = $transport->can ("send"); 102 my $transport_send = $transport->{send};
97
98 $self->{send} = sub {
99 $transport_send->($transport, $_[0]);
100 };
101 103
102 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
103 105
106 $self->{send} = $transport_send;
107
104 $transport->send ($_) 108 $transport_send->($_)
105 for @{ delete $self->{queue} || [] }; 109 for @{ delete $self->{queue} || [] };
106} 110}
107 111
108sub connect { 112sub connect {
109 my ($self) = @_; 113 my ($self) = @_;
110 114
111 return if $self->{transport}; 115 return if $self->{transport};
112 116 return if $self->{connect_w};
113 # just ignore connect requests for slave nodes - let's hope it connects to us instead
114 return if $self->{noderef} =~ /^slave\//;
115 117
116 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
117 119
118 $self->{connect_to} ||= AE::timer 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
119 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
120 0,
121 sub {
122 $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} },
123 }; 169 };
170 };
171}
124 172
125 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
126 my @endpoints; 207 my @endpoints;
127 my %trial;
128 208
129 $self->{connect_w} = AE::timer 209 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
130 rand, 210 @endpoints = @addresses
131 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
132 sub {
133 @endpoints = split /,/, $self->{noderef}
134 unless @endpoints; 211 unless @endpoints;
135 212
136 my $endpoint = shift @endpoints; 213 my $endpoint = shift @endpoints;
137 214
215 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
216
138 $trial{$endpoint} ||= do { 217 $self->{trial}{$endpoint} ||= do {
139 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 218 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
140 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{noderef}: not a resolved node reference."); 219 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
141 220
142 AnyEvent::MP::Transport::mp_connect 221 AnyEvent::MP::Transport::mp_connect
143 $host, $port, 222 $host, $port,
144 sub { delete $trial{$endpoint} } 223 sub { delete $self->{trial}{$endpoint} },
145 ;
146 };
147 }
148 ; 224 };
149 } 225 };
150} 226}
151 227
152sub kill { 228sub kill {
153 my ($self, $port, @reason) = @_; 229 my ($self, $port, @reason) = @_;
154 230
155 $self->send (["", kil => $port, @reason]); 231 $self->{send} (["", kil => $port, @reason]);
156} 232}
157 233
158sub monitor { 234sub monitor {
159 my ($self, $portid, $cb) = @_; 235 my ($self, $portid, $cb) = @_;
160 236
… …
178 $self->send (["", mon0 => $portid]); 254 $self->send (["", mon0 => $portid]);
179 delete $self->{monitor}{$portid}; 255 delete $self->{monitor}{$portid};
180 } 256 }
181} 257}
182 258
183# used for direct slave connections as well
184package AnyEvent::MP::Node::Direct;
185
186use base "AnyEvent::MP::Node::External";
187
188package AnyEvent::MP::Node::Self; 259package AnyEvent::MP::Node::Self;
189 260
190use base "AnyEvent::MP::Node"; 261use base "AnyEvent::MP::Node";
191 262
192sub connect { 263sub connect {
193 # we are trivially connected 264 # we are trivially connected
194} 265}
195 266
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 $DELAY = -50;
278};
279
196sub transport_reset { 280sub transport_reset {
197 my ($self) = @_; 281 my ($self) = @_;
198 282
199 Scalar::Util::weaken $self; 283 Scalar::Util::weaken $self;
200 284
201 $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
202 local $AnyEvent::MP::Kernel::SRCNODE = $self; 293 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
203 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 294 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204 }; 295 };
205} 296}
206 297
298sub transport_connect {
299 my ($self, $tp) = @_;
300
301 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
302}
303
207sub kill { 304sub kill {
208 my ($self, $port, @reason) = @_; 305 my (undef, @args) = @_;
209 306
210 delete $AnyEvent::MP::Kernel::PORT{$port}; 307 # we _always_ delay kil's, to avoid calling mon callbacks
211 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 308 # from anything but the event loop context.
212 309 $DELAY = 1;
213 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 310 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
214 or !@reason 311 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
215 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
216
217 $_->(@reason) for values %$mon;
218} 312}
219 313
220sub monitor { 314sub monitor {
221 my ($self, $portid, $cb) = @_; 315 # maybe always delay, too?
222 316 if ($DELAY_W) {
223 return $cb->(no_such_port => "cannot monitor nonexistent port") 317 my @args = @_;
224 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 318 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
225 319 return;
226 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 320 }
321 &AnyEvent::MP::Kernel::_monitor;
227} 322}
228 323
229sub unmonitor { 324sub unmonitor {
230 my ($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 }
231 331
232 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 332 &AnyEvent::MP::Kernel::_unmonitor;
233} 333}
234 334
235=head1 SEE ALSO 335=head1 SEE ALSO
236 336
237L<AnyEvent::MP>. 337L<AnyEvent::MP>.

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