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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.4 by root, Sat Aug 1 15:04:30 2009 UTC vs.
Revision 1.69 by root, Sun Aug 28 14:49:44 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
76 $self->connect;
77} 119}
78 120
79sub connect { 121sub connect {
80 my ($self) = @_; 122 my ($self) = @_;
81 123
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
82 Scalar::Util::weaken $self; 131 Scalar::Util::weaken $self;
83 132
84 unless (exists $self->{n_noderef}) { 133 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
85 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { 134 $self->transport_error (transport_error => $self->{id}, "connect timeout");
86 $self or return; 135 };
87 my $noderef = shift->recv;
88 136
89 $self->{n_noderef} = $noderef; 137 # maybe @$addresses?
138 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
90 139
91 $AnyEvent::MP::NODE{$_} = $self 140 if ($addresses) {
92 for split /,/, $noderef; 141 $self->connect_to ($addresses);
93 142 } else {
94 $self->connect; 143 # on global nodes, all bets are off now - we either know the node, or we don't
144 if ($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});
95 }); 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");
96 return; 160 return;
97 } 161 }
162
163 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
98 164
99 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 165 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
166 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
100 167
101 my $endpoint = shift @{ $self->{retry} }; 168 $interval = ($monitor - $interval) / @$addresses
169 if ($monitor - $interval) / @$addresses < $interval;
102 170
103 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 or return;
178
179 AE::log 9 => "connecting to $self->{id} at $endpoint";
180
104 $self->{trial}{$endpoint} ||= do { 181 $self->{trial}{$endpoint} ||= do {
105 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 182 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
106 or return; 183 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
107 184
108 my ($w, $g);
109
110 $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub {
111 delete $self->{trial}{$endpoint};
112 };
113 $g = AnyEvent::MP::Transport::mp_connect 185 AnyEvent::MP::Transport::mp_connect
114 $host, $port, 186 $host, $port,
115 sub {
116 delete $self->{trial}{$endpoint} 187 sub { delete $self->{trial}{$endpoint} },
117 unless @_;
118 $g = shift;
119 };
120 ;
121
122 [$w, \$g]
123 }; 188 };
124 } else {
125 delete $self->{retry};
126 }
127
128 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub {
129 $self->connect;
130 }; 189 };
131} 190}
132 191
192sub kill {
193 my ($self, $port, @reason) = @_;
194
195 $self->{send} (["", kil1 => $port, @reason]);
196}
197
198sub monitor {
199 my ($self, $portid, $cb) = @_;
200
201 my $list = $self->{lmon}{$portid} ||= [];
202
203 $self->send (["", mon1 => $portid])
204 unless @$list || !length $portid;
205
206 push @$list, $cb;
207}
208
209sub unmonitor {
210 my ($self, $portid, $cb) = @_;
211
212 my $list = $self->{lmon}{$portid}
213 or return;
214
215 @$list = grep $_ != $cb, @$list;
216
217 unless (@$list) {
218 $self->send (["", mon0 => $portid]);
219 delete $self->{monitor}{$portid};
220 }
221}
222
133package AnyEvent::MP::Node::Self; 223package AnyEvent::MP::Node::Self; # the local node
134 224
135use base "AnyEvent::MP::Node"; 225use base "AnyEvent::MP::Node";
136 226
227sub connect {
228 # we are trivially connected
229}
230
231# delay every so often to avoid recursion, also used to delay after spawn
232our $DELAY = -50;
233our @DELAY;
234our $DELAY_W;
235
236our $send_delayed = sub {
237 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
238 (shift @DELAY)->()
239 while @DELAY;
240 undef $DELAY_W;
241 $DELAY = -50;
242};
243
137sub set_transport { 244sub transport_reset {
138 die "FATAL error, set_transport was called"; 245 my ($self) = @_;
139}
140 246
141sub send { 247 Scalar::Util::weaken $self;
248
249 $self->{send} = sub {
250 if (++$DELAY > 0) {
251 my $msg = $_[0];
252 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
253 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
254 return;
255 }
256
257 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
142 AnyEvent::MP::_inject ($_[1]); 258 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
259 };
260}
261
262sub transport_connect {
263 my ($self, $tp) = @_;
264
265 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
266}
267
268sub kill {
269 my (undef, @args) = @_;
270
271 # we _always_ delay kil's, to avoid calling mon callbacks
272 # from anything but the event loop context.
273 $DELAY = 1;
274 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
275 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
276}
277
278sub monitor {
279 # maybe always delay, too?
280 if ($DELAY_W) {
281 my @args = @_;
282 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
283 return;
284 }
285 &AnyEvent::MP::Kernel::_monitor;
286}
287
288sub unmonitor {
289 # no need to always delay
290 if ($DELAY_W) {
291 my @args = @_;
292 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
293 return;
294 }
295
296 &AnyEvent::MP::Kernel::_unmonitor;
143} 297}
144 298
145=head1 SEE ALSO 299=head1 SEE ALSO
146 300
147L<AnyEvent>. 301L<AnyEvent::MP>.
148 302
149=head1 AUTHOR 303=head1 AUTHOR
150 304
151 Marc Lehmann <schmorp@schmorp.de> 305 Marc Lehmann <schmorp@schmorp.de>
152 http://home.schmorp.de/ 306 http://home.schmorp.de/

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