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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 1.65 by root, Fri Mar 23 21:16:36 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; # 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 $self->init;
30 $self->transport_reset;
31
32 $self
33}
34
35sub init {
36 #
37}
38
39sub send {
40 &{ shift->{send} }
41}
42
43# nodes reachable via the network
44package AnyEvent::MP::Node::Remote; # a remote node
33 45
34use base "AnyEvent::MP::Node"; 46use base "AnyEvent::MP::Node";
35 47
36sub send { 48# called at init time, mostly sets {send}
49sub transport_reset {
37 my ($self, $msg) = @_; 50 my ($self) = @_;
38 51
39 if ($self->{transport}) { 52 delete $self->{transport};
40 $self->{transport}->send ($msg); 53
41 } elsif ($self->{queue}) { 54 Scalar::Util::weaken $self;
55
56 $self->{send} = sub {
42 push @{ $self->{queue} }, $msg; 57 push @{$self->{queue}}, shift;
43 } else {
44 $self->{queue} = [$msg];
45 $self->connect; 58 $self->connect;
46 } 59 };
47} 60}
48 61
62# called each time we fail to establish a connection,
63# or the existing connection failed
49sub set_transport { 64sub transport_error {
65 my ($self, @reason) = @_;
66
67 my $no_transport = !$self->{transport};
68
69 delete $self->{connect_w};
70 delete $self->{connect_to};
71
72 delete $self->{queue};
73 $self->transport_reset;
74
75 if (my $mon = delete $self->{lmon}) {
76 $_->(@reason) for map @$_, values %$mon;
77 }
78
79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
80 unless $no_transport;
81
82 # if we are here and are idle, we nuke ourselves
83 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
84 unless $self->{transport} || $self->{connect_to};
85}
86
87# called after handshake was successful
88sub transport_connect {
50 my ($self, $transport) = @_; 89 my ($self, $transport) = @_;
51 90
52 delete $self->{trial}; 91 delete $self->{trial};
92
93 $self->transport_error (transport_error => $self->{id}, "switched connections")
94 if $self->{transport};
95
53 delete $self->{next_connect}; 96 delete $self->{connect_w};
97 delete $self->{connect_to};
54 98
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; 99 $self->{transport} = $transport;
66 100
101 my $transport_send = $transport->{send};
102
103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
104
105 $self->{send} = $transport_send;
106
67 $transport->send ($_) 107 $transport_send->($_)
68 for @{ delete $self->{queue} || [] }; 108 for @{ delete $self->{queue} || [] };
69}
70
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75
76 $self->connect;
77} 109}
78 110
79sub connect { 111sub connect {
80 my ($self) = @_; 112 my ($self) = @_;
81 113
114 return if $self->{transport};
115 return if $self->{connect_w};
116
82 Scalar::Util::weaken $self; 117 Scalar::Util::weaken $self;
83 118
84 unless (exists $self->{n_noderef}) { 119 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
85 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { 120 $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 } 121 };
98 122
99 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 123 # maybe @$addresses?
124 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
100 125
101 my $endpoint = shift @{ $self->{retry} }; 126 if ($addresses) {
127 $self->connect_to ($addresses);
128 } else {
129 # on global nodes, all bets are off now - we either know the node, or we don't
130 unless ($AnyEvent::MP::Kernel::GLOBAL) {
131 AnyEvent::MP::Kernel::g_find ($self->{id});
132 }
133 }
134}
102 135
103 if (defined $endpoint) { 136sub connect_to {
137 my ($self, $addresses) = @_;
138
139 return if $self->{transport};
140 return if $self->{connect_w};
141
142 return unless @$addresses;
143
144 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
145
146 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
147 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
148
149 $interval = ($monitor - $interval) / @$addresses
150 if ($monitor - $interval) / @$addresses < $interval;
151
152 $interval = 0.4 if $interval < 0.4;
153
154 my @endpoints = reverse @$addresses;
155
156 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
157 my $endpoint = pop @endpoints;
158
159 AE::log 9 => "connecting to $self->{id} at $endpoint";
160
104 $self->{trial}{$endpoint} ||= do { 161 $self->{trial}{$endpoint} ||= do {
105 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 162 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
106 or return; 163 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
107 164
108 my ($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 165 AnyEvent::MP::Transport::mp_connect
114 $host, $port, 166 $host, $port,
115 sub {
116 delete $self->{trial}{$endpoint} 167 sub { delete $self->{trial}{$endpoint} },
117 unless @_;
118 $g = shift;
119 };
120 ;
121
122 [$w, \$g]
123 }; 168 };
124 } else {
125 delete $self->{retry};
126 } 169 };
170}
127 171
128 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { 172sub kill {
129 $self->connect; 173 my ($self, $port, @reason) = @_;
174
175 $self->{send} (["", kil => $port, @reason]);
176}
177
178sub monitor {
179 my ($self, $portid, $cb) = @_;
180
181 my $list = $self->{lmon}{$portid} ||= [];
182
183 $self->send (["", mon1 => $portid])
184 unless @$list || !length $portid;
185
186 push @$list, $cb;
187}
188
189sub unmonitor {
190 my ($self, $portid, $cb) = @_;
191
192 my $list = $self->{lmon}{$portid}
193 or return;
194
195 @$list = grep $_ != $cb, @$list;
196
197 unless (@$list) {
198 $self->send (["", mon0 => $portid]);
199 delete $self->{monitor}{$portid};
130 }; 200 }
131} 201}
132 202
133package AnyEvent::MP::Node::Self; 203package AnyEvent::MP::Node::Self; # the local node
134 204
135use base "AnyEvent::MP::Node"; 205use base "AnyEvent::MP::Node";
136 206
207sub connect {
208 # we are trivially connected
209}
210
211# delay every so often to avoid recursion, also used to delay after spawn
212our $DELAY = -50;
213our @DELAY;
214our $DELAY_W;
215
216our $send_delayed = sub {
217 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
218 (shift @DELAY)->()
219 while @DELAY;
220 undef $DELAY_W;
221 $DELAY = -50;
222};
223
137sub set_transport { 224sub transport_reset {
138 die "FATAL error, set_transport was called"; 225 my ($self) = @_;
139}
140 226
141sub send { 227 Scalar::Util::weaken $self;
228
229 $self->{send} = sub {
230 if (++$DELAY > 0) {
231 my $msg = $_[0];
232 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
233 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
234 return;
235 }
236
237 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
142 AnyEvent::MP::_inject ($_[1]); 238 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
239 };
240}
241
242sub transport_connect {
243 my ($self, $tp) = @_;
244
245 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
246}
247
248sub kill {
249 my (undef, @args) = @_;
250
251 # we _always_ delay kil's, to avoid calling mon callbacks
252 # from anything but the event loop context.
253 $DELAY = 1;
254 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
255 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
256}
257
258sub monitor {
259 # maybe always delay, too?
260 if ($DELAY_W) {
261 my @args = @_;
262 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
263 return;
264 }
265 &AnyEvent::MP::Kernel::_monitor;
266}
267
268sub unmonitor {
269 # no need to always delay
270 if ($DELAY_W) {
271 my @args = @_;
272 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
273 return;
274 }
275
276 &AnyEvent::MP::Kernel::_unmonitor;
143} 277}
144 278
145=head1 SEE ALSO 279=head1 SEE ALSO
146 280
147L<AnyEvent>. 281L<AnyEvent::MP>.
148 282
149=head1 AUTHOR 283=head1 AUTHOR
150 284
151 Marc Lehmann <schmorp@schmorp.de> 285 Marc Lehmann <schmorp@schmorp.de>
152 http://home.schmorp.de/ 286 http://home.schmorp.de/

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