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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 1.62 by root, Thu Mar 22 00:48:29 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
53 delete $self->{next_connect}; 97 delete $self->{connect_w};
98 delete $self->{connect_to};
54 99
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; 100 $self->{transport} = $transport;
66 101
102 my $transport_send = $transport->{send};
103
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105
106 $self->{send} = $transport_send;
107
67 $transport->send ($_) 108 $transport_send->($_)
68 for @{ delete $self->{queue} || [] }; 109 for @{ delete $self->{queue} || [] };
69}
70
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75
76 $self->connect;
77} 110}
78 111
79sub connect { 112sub connect {
80 my ($self) = @_; 113 my ($self) = @_;
81 114
115 return if $self->{transport};
116 return if $self->{connect_w};
117
82 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
83 119
84 unless (exists $self->{n_noderef}) { 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
85 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { 121 $self->transport_error (transport_error => $self->{id}, "unable to connect");
86 $self or return;
87 my $noderef = shift->recv;
88
89 $self->{n_noderef} = $noderef;
90
91 $AnyEvent::MP::NODE{$_} = $self
92 for split /,/, $noderef;
93
94 $self->connect;
95 });
96 return;
97 } 122 };
98 123
99 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 124 # maybe @$addresses?
125 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
100 126
101 my $endpoint = shift @{ $self->{retry} }; 127 if ($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}
102 136
103 if (defined $endpoint) { 137sub connect_to {
138 my ($self, $addresses) = @_;
139
140 return if $self->{transport};
141 return if $self->{connect_w};
142
143 return unless @$addresses;
144
145 AE::log 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 AE::log 9 => "connecting to $self->{id} at $endpoint";
161
104 $self->{trial}{$endpoint} ||= do { 162 $self->{trial}{$endpoint} ||= do {
105 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 163 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
106 or return; 164 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
107 165
108 my ($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 166 AnyEvent::MP::Transport::mp_connect
114 $host, $port, 167 $host, $port,
115 sub {
116 delete $self->{trial}{$endpoint} 168 sub { delete $self->{trial}{$endpoint} },
117 unless @_;
118 $g = shift;
119 };
120 ;
121
122 [$w, \$g]
123 }; 169 };
124 } else {
125 delete $self->{retry};
126 } 170 };
171}
127 172
128 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { 173sub kill {
129 $self->connect; 174 my ($self, $port, @reason) = @_;
175
176 $self->{send} (["", kil => $port, @reason]);
177}
178
179sub monitor {
180 my ($self, $portid, $cb) = @_;
181
182 my $list = $self->{lmon}{$portid} ||= [];
183
184 $self->send (["", mon1 => $portid])
185 unless @$list || !length $portid;
186
187 push @$list, $cb;
188}
189
190sub unmonitor {
191 my ($self, $portid, $cb) = @_;
192
193 my $list = $self->{lmon}{$portid}
194 or return;
195
196 @$list = grep $_ != $cb, @$list;
197
198 unless (@$list) {
199 $self->send (["", mon0 => $portid]);
200 delete $self->{monitor}{$portid};
130 }; 201 }
131} 202}
132 203
133package AnyEvent::MP::Node::Self; 204package AnyEvent::MP::Node::Self;
134 205
135use base "AnyEvent::MP::Node"; 206use base "AnyEvent::MP::Node";
136 207
208sub connect {
209 # we are trivially connected
210}
211
212# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY = -50;
214our @DELAY;
215our $DELAY_W;
216
217our $send_delayed = sub {
218 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
219 (shift @DELAY)->()
220 while @DELAY;
221 undef $DELAY_W;
222 $DELAY = -50;
223};
224
137sub set_transport { 225sub transport_reset {
138 die "FATAL error, set_transport was called"; 226 my ($self) = @_;
139}
140 227
141sub send { 228 Scalar::Util::weaken $self;
229
230 $self->{send} = sub {
231 if (++$DELAY > 0) {
232 my $msg = $_[0];
233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
234 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
235 return;
236 }
237
238 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
142 AnyEvent::MP::_inject ($_[1]); 239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 };
241}
242
243sub transport_connect {
244 my ($self, $tp) = @_;
245
246 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
247}
248
249sub kill {
250 my (undef, @args) = @_;
251
252 # we _always_ delay kil's, to avoid calling mon callbacks
253 # from anything but the event loop context.
254 $DELAY = 1;
255 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
256 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
257}
258
259sub monitor {
260 # maybe always delay, too?
261 if ($DELAY_W) {
262 my @args = @_;
263 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
264 return;
265 }
266 &AnyEvent::MP::Kernel::_monitor;
267}
268
269sub unmonitor {
270 # no need to always delay
271 if ($DELAY_W) {
272 my @args = @_;
273 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
274 return;
275 }
276
277 &AnyEvent::MP::Kernel::_unmonitor;
143} 278}
144 279
145=head1 SEE ALSO 280=head1 SEE ALSO
146 281
147L<AnyEvent>. 282L<AnyEvent::MP>.
148 283
149=head1 AUTHOR 284=head1 AUTHOR
150 285
151 Marc Lehmann <schmorp@schmorp.de> 286 Marc Lehmann <schmorp@schmorp.de>
152 http://home.schmorp.de/ 287 http://home.schmorp.de/

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