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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.3 by root, Sat Aug 1 07:36:30 2009 UTC vs.
Revision 1.67 by root, Sun Aug 28 08:23:34 2016 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 (); 19use AnyEvent ();
18use AnyEvent::Socket (); 20use AnyEvent::Socket ();
19 21
20use AnyEvent::MP::Transport (); 22use AnyEvent::MP::Transport ();
21 23
22use base Exporter::;
23
24our $VERSION = '0.0';
25
26sub new { 24sub new {
27 my ($class, $noderef) = @_; 25 my ($self, $id) = @_;
28 26
29 bless { noderef => $noderef }, $class 27 $self = bless { id => $id }, $self;
30}
31 28
32package AnyEvent::MP::Node::Direct; 29 # register
30 $AnyEvent::MP::Kernel::NODE{$id} = $self;
31
32 $self->init;
33 $self->transport_reset;
34
35 $self
36}
37
38sub DESTROY {
39 # unregister
40 delete $AnyEvent::MP::Kernel::NODE{$_[0]{id}};
41}
42
43sub init {
44 #
45}
46
47sub send {
48 &{ shift->{send} }
49}
50
51# nodes reachable via the network
52package AnyEvent::MP::Node::Remote; # a remote node
33 53
34use base "AnyEvent::MP::Node"; 54use base "AnyEvent::MP::Node";
35 55
36sub send { 56# called at init time, mostly sets {send}
57sub transport_reset {
37 my ($self, $msg) = @_; 58 my ($self) = @_;
38 59
39 if ($self->{transport}) { 60 delete $self->{transport};
40 $self->{transport}->send ($msg); 61
41 } elsif ($self->{queue}) { 62 Scalar::Util::weaken $self;
63
64 $self->{send} = sub {
42 push @{ $self->{queue} }, $msg; 65 push @{$self->{queue}}, shift;
43 } else {
44 $self->{queue} = [$msg];
45 $self->connect; 66 $self->connect;
46 } 67 };
47} 68}
48 69
70# called each time we fail to establish a connection,
71# or the existing connection failed
49sub set_transport { 72sub transport_error {
73 my ($self, @reason) = @_;
74
75 my $no_transport = !$self->{transport};
76
77 delete $self->{connect_w};
78 delete $self->{connect_to};
79
80 delete $self->{queue};
81 $self->transport_reset;
82
83 if (my $mon = delete $self->{lmon}) {
84 $_->(@reason) for map @$_, values %$mon;
85 }
86
87 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
88 unless $no_transport;
89
90 # we weaken the node reference, so it can go away if unused
91 Scalar::Util::weaken $AnyEvent::MP::Kernel::NODE{$self->{id}}
92 unless $self->{connect_to};
93
94 AE::log 9 => "@reason";
95}
96
97# called after handshake was successful
98sub transport_connect {
50 my ($self, $transport) = @_; 99 my ($self, $transport) = @_;
51 100
52 delete $self->{trial}; 101 delete $self->{trial};
102
103 $self->transport_error (transport_error => $self->{id}, "switched connections")
104 if $self->{transport};
105
53 delete $self->{next_connect}; 106 delete $self->{connect_w};
107 delete $self->{connect_to};
54 108
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; 109 $self->{transport} = $transport;
66 110
111 my $transport_send = $transport->{send};
112
113 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
114
115 $self->{send} = $transport_send;
116
67 $transport->send ($_) 117 $transport_send->($_)
68 for @{ delete $self->{queue} || [] }; 118 for @{ delete $self->{queue} || [] };
69}
70
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75 warn "clr_transport\n";
76} 119}
77 120
78sub connect { 121sub connect {
79 my ($self) = @_; 122 my ($self) = @_;
80 123
124 return if $self->{transport};
125 return if $self->{connect_w};
126
127 # we unweaken the node reference, in case it was weakened before
128 $AnyEvent::MP::Kernel::NODE{$self->{id}}
129 = $AnyEvent::MP::Kernel::NODE{$self->{id}};
130
81 Scalar::Util::weaken $self; 131 Scalar::Util::weaken $self;
82 132
83 unless (exists $self->{n_noderef}) { 133 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
84 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { 134 $self->transport_error (transport_error => $self->{id}, "connect timeout");
85 $self or return; 135 };
86 my $noderef = shift->recv;
87 136
88 $self->{n_noderef} = $noderef; 137 # maybe @$addresses?
138 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
89 139
90 $AnyEvent::MP::NODE{$_} = $self 140 if ($addresses) {
91 for split /,/, $noderef; 141 $self->connect_to ($addresses);
92 142 } else {
93 $self->connect; 143 # on global nodes, all bets are off now - we either know the node, or we don't
144 if ($AnyEvent::MP::Kernel::GLOBAL) {
145 $self->transport_error (transport_error => $self->{id}, "no known address");
146 } else {
147 AnyEvent::MP::Kernel::g_find ($self->{id});
94 }); 148 }
149 }
150}
151
152sub connect_to {
153 my ($self, $addresses) = @_;
154
155 return if $self->{transport};
156 return if $self->{connect_w};
157
158 unless (@$addresses) {
159 $self->transport_error (transport_error => $self->{id}, "no known address");
95 return; 160 return;
96 } 161 }
162
163 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
97 164
98 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 165 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
166 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
99 167
100 my $endpoint = shift @{ $self->{retry} }; 168 $interval = ($monitor - $interval) / @$addresses
169 if ($monitor - $interval) / @$addresses < $interval;
101 170
102 if (defined $endpoint) { 171 $interval = 0.4 if $interval < 0.4;
172
173 my @endpoints = reverse @$addresses;
174
175 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
176 my $endpoint = pop @endpoints;
177
178 AE::log 9 => "connecting to $self->{id} at $endpoint";
179
103 $self->{trial}{$endpoint} ||= do { 180 $self->{trial}{$endpoint} ||= do {
104 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 181 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
105 or return; 182 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
106 183
107 my ($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 184 AnyEvent::MP::Transport::mp_connect
113 $host, $port, 185 $host, $port,
114 sub {
115 delete $self->{trial}{$endpoint} 186 sub { delete $self->{trial}{$endpoint} },
116 unless @_;
117 $g = shift;
118 };
119 ;
120
121 [$w, \$g]
122 }; 187 };
123 } else {
124 delete $self->{retry};
125 }
126
127 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub {
128 $self->connect;
129 }; 188 };
130} 189}
131 190
191sub kill {
192 my ($self, $port, @reason) = @_;
193
194 $self->{send} (["", kil1 => $port, @reason]);
195}
196
197sub monitor {
198 my ($self, $portid, $cb) = @_;
199
200 my $list = $self->{lmon}{$portid} ||= [];
201
202 $self->send (["", mon1 => $portid])
203 unless @$list || !length $portid;
204
205 push @$list, $cb;
206}
207
208sub unmonitor {
209 my ($self, $portid, $cb) = @_;
210
211 my $list = $self->{lmon}{$portid}
212 or return;
213
214 @$list = grep $_ != $cb, @$list;
215
216 unless (@$list) {
217 $self->send (["", mon0 => $portid]);
218 delete $self->{monitor}{$portid};
219 }
220}
221
132package AnyEvent::MP::Node::Self; 222package AnyEvent::MP::Node::Self; # the local node
133 223
134use base "AnyEvent::MP::Node"; 224use base "AnyEvent::MP::Node";
135 225
226sub connect {
227 # we are trivially connected
228}
229
230# delay every so often to avoid recursion, also used to delay after spawn
231our $DELAY = -50;
232our @DELAY;
233our $DELAY_W;
234
235our $send_delayed = sub {
236 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
237 (shift @DELAY)->()
238 while @DELAY;
239 undef $DELAY_W;
240 $DELAY = -50;
241};
242
136sub set_transport { 243sub transport_reset {
137 die "FATAL error, set_transport was called"; 244 my ($self) = @_;
138}
139 245
140sub send { 246 Scalar::Util::weaken $self;
247
248 $self->{send} = sub {
249 if (++$DELAY > 0) {
250 my $msg = $_[0];
251 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
252 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
253 return;
254 }
255
256 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
141 AnyEvent::MP::_inject ($_[1]); 257 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
258 };
259}
260
261sub transport_connect {
262 my ($self, $tp) = @_;
263
264 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
265}
266
267sub kill {
268 my (undef, @args) = @_;
269
270 # we _always_ delay kil's, to avoid calling mon callbacks
271 # from anything but the event loop context.
272 $DELAY = 1;
273 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
274 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
275}
276
277sub monitor {
278 # maybe always delay, too?
279 if ($DELAY_W) {
280 my @args = @_;
281 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
282 return;
283 }
284 &AnyEvent::MP::Kernel::_monitor;
285}
286
287sub unmonitor {
288 # no need to always delay
289 if ($DELAY_W) {
290 my @args = @_;
291 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
292 return;
293 }
294
295 &AnyEvent::MP::Kernel::_unmonitor;
142} 296}
143 297
144=head1 SEE ALSO 298=head1 SEE ALSO
145 299
146L<AnyEvent>. 300L<AnyEvent::MP>.
147 301
148=head1 AUTHOR 302=head1 AUTHOR
149 303
150 Marc Lehmann <schmorp@schmorp.de> 304 Marc Lehmann <schmorp@schmorp.de>
151 http://home.schmorp.de/ 305 http://home.schmorp.de/

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