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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.1 by root, Fri Jul 31 20:55:46 2009 UTC vs.
Revision 1.58 by root, Fri Mar 2 19:21:16 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 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;
14 16
15use common::sense; 17use common::sense;
16 18
17use AE (); 19use AE ();
20use AnyEvent::Util ();
18use AnyEvent::Socket (); 21use AnyEvent::Socket ();
19 22
20use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
21 24
22use base Exporter::;
23
24our $VERSION = '0.0';
25
26sub new { 25sub new {
27 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
28 27
29 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
30}
31 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
32package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::Remote;
33 46
34use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
35 48
36sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
37 my ($self, $msg) = @_; 51 my ($self) = @_;
38 52
39 if ($self->{transport}) { 53 delete $self->{transport};
40 $self->{transport}->send ($msg); 54
41 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
42 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
43 } else {
44 $self->{queue} = [$msg];
45 $self->connect; 59 $self->connect;
46 } 60 };
47} 61}
48 62
63# called each time we fail to establish a connection,
64# or the existing connection failed
49sub set_transport { 65sub transport_error {
66 my ($self, @reason) = @_;
67
68 my $no_transport = !$self->{transport};
69
70 delete $self->{connect_w};
71 delete $self->{connect_to};
72
73 delete $self->{queue};
74 $self->transport_reset;
75
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
50 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
51 91
52 delete $self->{trial}; 92 delete $self->{trial};
93
94 $self->transport_error (transport_error => $self->{id}, "switched connections")
95 if $self->{transport};
96
97 delete $self->{connect_addr};
53 delete $self->{next_connect}; 98 delete $self->{connect_w};
99 delete $self->{connect_to};
54 100
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; 101 $self->{transport} = $transport;
66 102
103 my $transport_send = $transport->{send};
104
105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
106
107 $self->{send} = $transport_send;
108
67 $transport->send ($_) 109 $transport_send->($_)
68 for @{ delete $self->{queue} || [] }; 110 for @{ delete $self->{queue} || [] };
69}
70
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75 warn "clr_transport\n";
76} 111}
77 112
78sub connect { 113sub connect {
79 my ($self) = @_; 114 my ($self) = @_;
80 115
116 return if $self->{transport};
117 return if $self->{connect_w};
118
81 Scalar::Util::weaken $self; 119 Scalar::Util::weaken $self;
82 120
83 unless (exists $self->{n_noderef}) { 121 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
84 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub {
85 $self or return;
86 my $noderef = shift->recv;
87 122
88 $self->{n_noderef} = $noderef; 123 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
124 $self->transport_error (transport_error => $self->{id}, "unable to connect");
125 };
89 126
90 $AnyEvent::MP::NODE{$_} = $self 127 # maybe @$addresses?
91 for split /,/, $noderef; 128 my @addresses = @{ $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}} };
92 129
93 $self->connect; 130 unless (@addresses) {
131 # on global nodes, all bets are off now - we either know the node, or we don't
132 unless ($AnyEvent::MP::Kernel::GLOBAL) {
133 AnyEvent::MP::Kernel::g_find ($self->{id});
94 }); 134 }
95 return; 135 return;
96 } 136 }
97 137
98 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 138 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
99 139
100 my $endpoint = shift @{ $self->{retry} }; 140 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
101 141
102 if (defined $endpoint) { 142 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
143
144 $interval = ($monitor - $interval) / @addresses
145 if ($monitor - $interval) / @addresses < $interval;
146
147 $interval = 0.4 if $interval < 0.4;
148
149 my @endpoints;
150
151 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
152 @endpoints = @addresses
153 unless @endpoints;
154
155 my $endpoint = shift @endpoints;
156
157 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
158
103 $self->{trial}{$endpoint} ||= do { 159 $self->{trial}{$endpoint} ||= do {
104 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 160 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
105 or return; 161 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
106 162
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 163 AnyEvent::MP::Transport::mp_connect
113 $host, $port, 164 $host, $port,
114 sub {
115 delete $self->{trial}{$endpoint} 165 sub { delete $self->{trial}{$endpoint} },
116 unless @_;
117 $g = shift;
118 };
119 ;
120
121 [$w, \$g]
122 }; 166 };
123 } else {
124 delete $self->{retry};
125 } 167 };
168}
126 169
127 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { 170sub kill {
128 $self->connect; 171 my ($self, $port, @reason) = @_;
172
173 $self->{send} (["", kil => $port, @reason]);
174}
175
176sub monitor {
177 my ($self, $portid, $cb) = @_;
178
179 my $list = $self->{lmon}{$portid} ||= [];
180
181 $self->send (["", mon1 => $portid])
182 unless @$list || !length $portid;
183
184 push @$list, $cb;
185}
186
187sub unmonitor {
188 my ($self, $portid, $cb) = @_;
189
190 my $list = $self->{lmon}{$portid}
191 or return;
192
193 @$list = grep $_ != $cb, @$list;
194
195 unless (@$list) {
196 $self->send (["", mon0 => $portid]);
197 delete $self->{monitor}{$portid};
129 }; 198 }
130} 199}
131 200
132package AnyEvent::MP::Node::Self; 201package AnyEvent::MP::Node::Self;
133 202
134use base "AnyEvent::MP::Node"; 203use base "AnyEvent::MP::Node";
135 204
205sub connect {
206 # we are trivially connected
207}
208
209# delay every so often to avoid recursion, also used to delay after spawn
210our $DELAY = -50;
211our @DELAY;
212our $DELAY_W;
213
214sub _send_delayed {
215 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
216 (shift @DELAY)->()
217 while @DELAY;
218 undef $DELAY_W;
219 $DELAY = -50;
220}
221
136sub set_transport { 222sub transport_reset {
137 die "FATAL error, set_transport was called"; 223 my ($self) = @_;
138}
139 224
140sub send { 225 Scalar::Util::weaken $self;
141 die "self-send not implemented yet\n";#d# 226
227 $self->{send} = sub {
228 if ($DELAY++ >= 0) {
229 my $msg = $_[0];
230 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
231 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
232 return;
233 }
234
235 local $AnyEvent::MP::Kernel::SRCNODE = $self;
236 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
237 };
238}
239
240sub transport_connect {
241 my ($self, $tp) = @_;
242
243 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
244}
245
246sub kill {
247 my (undef, @args) = @_;
248
249 # we _always_ delay kil's, to avoid calling mon callbacks
250 # from anything but the event loop context.
251 $DELAY = 1;
252 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
253 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
254}
255
256sub monitor {
257 # maybe always delay, too?
258 if ($DELAY_W) {
259 my @args = @_;
260 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
261 return;
262 }
263 &AnyEvent::MP::Kernel::_monitor;
264}
265
266sub unmonitor {
267 # no need to always delay
268 if ($DELAY_W) {
269 my @args = @_;
270 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
271 return;
272 }
273
274 &AnyEvent::MP::Kernel::_unmonitor;
142} 275}
143 276
144=head1 SEE ALSO 277=head1 SEE ALSO
145 278
146L<AnyEvent>. 279L<AnyEvent::MP>.
147 280
148=head1 AUTHOR 281=head1 AUTHOR
149 282
150 Marc Lehmann <schmorp@schmorp.de> 283 Marc Lehmann <schmorp@schmorp.de>
151 http://home.schmorp.de/ 284 http://home.schmorp.de/

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