ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/AnyEvent-MP/MP/Node.pm
(Generate patch)

Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.3 by root, Sat Aug 1 07:36:30 2009 UTC vs.
Revision 1.36 by root, Fri Sep 4 21:01:22 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
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;
101
102 my $transport_send = $transport->can ("send");
103
104 $self->{send} = sub {
105 $transport_send->($transport, $_[0]);
106 };
107
108 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
66 109
67 $transport->send ($_) 110 $transport->send ($_)
68 for @{ delete $self->{queue} || [] }; 111 for @{ delete $self->{queue} || [] };
69} 112}
70 113
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75 warn "clr_transport\n";
76}
77
78sub connect { 114sub connect {
79 my ($self) = @_; 115 my ($self, @addresses) = @_;
116
117 return if $self->{transport};
80 118
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 {
89 124 $self->transport_error (transport_error => $self->{id}, "unable to connect");
90 $AnyEvent::MP::NODE{$_} = $self
91 for split /,/, $noderef;
92
93 $self->connect;
94 });
95 return;
96 } 125 };
97 126
98 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 127 return unless @addresses;
128 return if $self->{connect_w};
99 129
100 my $endpoint = shift @{ $self->{retry} }; 130 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
101 131
102 if (defined $endpoint) { 132 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
133
134 $interval = ($monitor - $interval) / @addresses
135 if ($monitor - $interval) / @addresses < $interval;
136
137 $interval = 0.4 if $interval < 0.4;
138
139 my @endpoints;
140
141 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
142 @endpoints = @addresses
143 unless @endpoints;
144
145 my $endpoint = shift @endpoints;
146
147 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
148
103 $self->{trial}{$endpoint} ||= do { 149 $self->{trial}{$endpoint} ||= do {
104 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 150 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
105 or return; 151 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
106 152
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 153 AnyEvent::MP::Transport::mp_connect
113 $host, $port, 154 $host, $port,
114 sub {
115 delete $self->{trial}{$endpoint} 155 sub { delete $self->{trial}{$endpoint} },
116 unless @_;
117 $g = shift;
118 };
119 ;
120
121 [$w, \$g]
122 }; 156 };
123 } else { 157 };
124 delete $self->{retry}; 158}
159
160sub kill {
161 my ($self, $port, @reason) = @_;
162
163 $self->send (["", kil => $port, @reason]);
164}
165
166sub monitor {
167 my ($self, $portid, $cb) = @_;
168
169 my $list = $self->{lmon}{$portid} ||= [];
170
171 $self->send (["", mon1 => $portid])
172 unless @$list || !length $portid;
173
174 push @$list, $cb;
175}
176
177sub unmonitor {
178 my ($self, $portid, $cb) = @_;
179
180 my $list = $self->{lmon}{$portid}
181 or return;
182
183 @$list = grep $_ != $cb, @$list;
184
185 unless (@$list) {
186 $self->send (["", mon0 => $portid]);
187 delete $self->{monitor}{$portid};
125 } 188 }
126
127 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub {
128 $self->connect;
129 };
130} 189}
190
191# used for direct slave connections as well
192package AnyEvent::MP::Node::Direct;
193
194use base "AnyEvent::MP::Node::External";
131 195
132package AnyEvent::MP::Node::Self; 196package AnyEvent::MP::Node::Self;
133 197
134use base "AnyEvent::MP::Node"; 198use base "AnyEvent::MP::Node";
135 199
200sub connect {
201 # we are trivially connected
202}
203
136sub set_transport { 204sub transport_reset {
137 die "FATAL error, set_transport was called"; 205 my ($self) = @_;
138}
139 206
140sub send { 207 Scalar::Util::weaken $self;
208
209 $self->{send} = sub {
210 local $AnyEvent::MP::Kernel::SRCNODE = $self;
141 AnyEvent::MP::_inject ($_[1]); 211 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
212 };
213}
214
215sub transport_connect {
216 my ($self, $tp) = @_;
217
218 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
219}
220
221sub kill {
222 my ($self, $port, @reason) = @_;
223
224 delete $AnyEvent::MP::Kernel::PORT{$port};
225 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
226
227 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
228 or !@reason
229 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
230
231 $_->(@reason) for values %$mon;
232}
233
234sub monitor {
235 my ($self, $portid, $cb) = @_;
236
237 return $cb->(no_such_port => "cannot monitor nonexistent port")
238 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
239
240 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
241}
242
243sub unmonitor {
244 my ($self, $portid, $cb) = @_;
245
246 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
142} 247}
143 248
144=head1 SEE ALSO 249=head1 SEE ALSO
145 250
146L<AnyEvent>. 251L<AnyEvent::MP>.
147 252
148=head1 AUTHOR 253=head1 AUTHOR
149 254
150 Marc Lehmann <schmorp@schmorp.de> 255 Marc Lehmann <schmorp@schmorp.de>
151 http://home.schmorp.de/ 256 http://home.schmorp.de/

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines