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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 1.48 by root, Wed Dec 30 13:37:53 2009 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 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
32package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::External;
33 46
34use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
35 48
36sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
37 my ($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 $self->connect;
60 };
61}
62
63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error {
66 my ($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 %$mon;
46 } 78 }
47}
48 79
49sub set_transport { 80 AnyEvent::MP::Kernel::_inject_nodeevent ($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 => "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;
102
103 my $transport_send = $transport->can ("send");
104
105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
106
107 $self->{send} = sub {
108 $transport_send->($transport, $_[0]);
109 };
66 110
67 $transport->send ($_) 111 $transport->send ($_)
68 for @{ delete $self->{queue} || [] }; 112 for @{ delete $self->{queue} || [] };
69} 113}
70 114
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75 warn "clr_transport\n";
76}
77
78sub connect { 115sub connect {
79 my ($self) = @_; 116 my ($self, @addresses) = @_;
117
118 return if $self->{transport};
80 119
81 Scalar::Util::weaken $self; 120 Scalar::Util::weaken $self;
82 121
83 unless (exists $self->{n_noderef}) { 122 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;
87 123
88 $self->{n_noderef} = $noderef; 124 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
125 $self->transport_error (transport_error => $self->{id}, "unable to connect");
126 };
89 127
90 $AnyEvent::MP::NODE{$_} = $self 128 return unless @addresses;
91 for split /,/, $noderef;
92 129
93 $self->connect; 130 if ($self->{connect_w}) {
94 }); 131 # sometimes we get told about new addresses after we started to connect
132 unshift @{$self->{connect_addr}}, @addresses;
95 return; 133 return;
96 } 134 }
97 135
98 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 136 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
99 137
100 my $endpoint = shift @{ $self->{retry} }; 138 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
101 139
102 if (defined $endpoint) { 140 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
141
142 $interval = ($monitor - $interval) / @addresses
143 if ($monitor - $interval) / @addresses < $interval;
144
145 $interval = 0.4 if $interval < 0.4;
146
147 my @endpoints;
148
149 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
150 @endpoints = @addresses
151 unless @endpoints;
152
153 my $endpoint = shift @endpoints;
154
155 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
156
103 $self->{trial}{$endpoint} ||= do { 157 $self->{trial}{$endpoint} ||= do {
104 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
105 or return; 159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
106 160
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 161 AnyEvent::MP::Transport::mp_connect
113 $host, $port, 162 $host, $port,
114 sub {
115 delete $self->{trial}{$endpoint} 163 sub { delete $self->{trial}{$endpoint} },
116 unless @_;
117 $g = shift;
118 };
119 ;
120
121 [$w, \$g]
122 }; 164 };
123 } else { 165 };
124 delete $self->{retry}; 166}
167
168sub kill {
169 my ($self, $port, @reason) = @_;
170
171 $self->send (["", kil => $port, @reason]);
172}
173
174sub monitor {
175 my ($self, $portid, $cb) = @_;
176
177 my $list = $self->{lmon}{$portid} ||= [];
178
179 $self->send (["", mon1 => $portid])
180 unless @$list || !length $portid;
181
182 push @$list, $cb;
183}
184
185sub unmonitor {
186 my ($self, $portid, $cb) = @_;
187
188 my $list = $self->{lmon}{$portid}
189 or return;
190
191 @$list = grep $_ != $cb, @$list;
192
193 unless (@$list) {
194 $self->send (["", mon0 => $portid]);
195 delete $self->{monitor}{$portid};
125 } 196 }
126
127 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub {
128 $self->connect;
129 };
130} 197}
198
199# used for direct slave connections as well
200package AnyEvent::MP::Node::Direct;
201
202use base "AnyEvent::MP::Node::External";
131 203
132package AnyEvent::MP::Node::Self; 204package AnyEvent::MP::Node::Self;
133 205
134use base "AnyEvent::MP::Node"; 206use base "AnyEvent::MP::Node";
135 207
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
217sub _send_delayed {
218 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
219 (shift @DELAY)->()
220 while @DELAY;
221 undef $DELAY_W;
222 $DELAY = -50;
223}
224
136sub set_transport { 225sub transport_reset {
137 die "FATAL error, set_transport was called"; 226 my ($self) = @_;
138}
139 227
140sub send { 228 Scalar::Util::weaken $self;
141 die "self-send not implemented yet\n";#d# 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 = $self;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 };
241}
242
243sub transport_connect {
244 my ($self, $tp) = @_;
245
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
247}
248
249sub kill {
250 my ($self, @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 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
257}
258
259sub monitor {
260 my ($self, $portid, $cb) = @_;
261
262 my $delay_cb = sub {
263 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid")
264 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
265
266 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
267 };
268
269 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
270}
271
272sub unmonitor {
273 my ($self, $portid, $cb) = @_;
274
275 my $delay_cb = sub {
276 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
277 };
278
279 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
142} 280}
143 281
144=head1 SEE ALSO 282=head1 SEE ALSO
145 283
146L<AnyEvent>. 284L<AnyEvent::MP>.
147 285
148=head1 AUTHOR 286=head1 AUTHOR
149 287
150 Marc Lehmann <schmorp@schmorp.de> 288 Marc Lehmann <schmorp@schmorp.de>
151 http://home.schmorp.de/ 289 http://home.schmorp.de/

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