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 1.16 by root, Sun Aug 9 16:08:16 2009 UTC vs.
Revision 1.40 by root, Tue Sep 8 20:56:05 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
11This is an internal utility module, horrible to look at, so don't.
10 12
11=cut 13=cut
12 14
13package AnyEvent::MP::Node; 15package AnyEvent::MP::Node;
14 16
… …
18use AnyEvent::Util (); 20use AnyEvent::Util ();
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23use base Exporter::;
24
25sub new { 25sub new {
26 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
27 27
28 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
29}
30 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
31package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::External;
32 46
33use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
34 48
35sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
36 my ($self, $msg) = @_; 51 my ($self) = @_;
37 52
38 if ($self->{transport}) { 53 delete $self->{transport};
39 $self->{transport}->send ($msg); 54
40 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
41 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
42 } else {
43 $self->{queue} = [$msg];
44 $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 %$mon;
45 } 78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
90 my ($self, $transport) = @_;
91
92 delete $self->{trial};
93
94 $self->transport_error (transport_error => "switched connections")
95 if $self->{transport};
96
97 delete $self->{connect_w};
98 delete $self->{connect_to};
99
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);
109
110 $transport->send ($_)
111 for @{ delete $self->{queue} || [] };
112}
113
114sub connect {
115 my ($self, @addresses) = @_;
116
117 return if $self->{transport};
118
119 Scalar::Util::weaken $self;
120
121 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
122
123 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
124 $self->transport_error (transport_error => $self->{id}, "unable to connect");
125 };
126
127 return unless @addresses;
128 return if $self->{connect_w};
129
130 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
131
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
149 $self->{trial}{$endpoint} ||= do {
150 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
151 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
152
153 AnyEvent::MP::Transport::mp_connect
154 $host, $port,
155 sub { delete $self->{trial}{$endpoint} },
156 };
157 };
46} 158}
47 159
48sub kill { 160sub kill {
49 my ($self, $port, @reason) = @_; 161 my ($self, $port, @reason) = @_;
50 162
… …
55 my ($self, $portid, $cb) = @_; 167 my ($self, $portid, $cb) = @_;
56 168
57 my $list = $self->{lmon}{$portid} ||= []; 169 my $list = $self->{lmon}{$portid} ||= [];
58 170
59 $self->send (["", mon1 => $portid]) 171 $self->send (["", mon1 => $portid])
60 unless @$list; 172 unless @$list || !length $portid;
61 173
62 push @$list, $cb; 174 push @$list, $cb;
63} 175}
64 176
65sub unmonitor { 177sub unmonitor {
… …
74 $self->send (["", mon0 => $portid]); 186 $self->send (["", mon0 => $portid]);
75 delete $self->{monitor}{$portid}; 187 delete $self->{monitor}{$portid};
76 } 188 }
77} 189}
78 190
79sub set_transport { 191# used for direct slave connections as well
80 my ($self, $transport) = @_; 192package AnyEvent::MP::Node::Direct;
81 193
82 $self->clr_transport 194use base "AnyEvent::MP::Node::External";
83 if $self->{transport};
84 195
85 delete $self->{trial}; 196package AnyEvent::MP::Node::Self;
86 delete $self->{retry};
87 delete $self->{next_connect};
88 197
89 $self->{transport} = $transport; 198use base "AnyEvent::MP::Node";
90
91 $transport->send ($_)
92 for @{ delete $self->{queue} || [] };
93}
94
95sub fail {
96 my ($self, @reason) = @_;
97
98 delete $self->{queue};
99
100 if (my $mon = delete $self->{lmon}) {
101 $_->(@reason) for map @$_, values %$mon;
102 }
103}
104
105sub clr_transport {
106 my ($self, @reason) = @_;
107
108 delete $self->{transport};
109 $self->connect;
110}
111 199
112sub connect { 200sub connect {
201 # we are trivially connected
202}
203
204# delay every so often to avoid recursion, also used to delay after spawn
205our $DELAY;
206our @DELAY;
207our $DELAY_W;
208
209sub _send_delayed {
210 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
211 (shift @DELAY)->()
212 while @DELAY;
213 undef $DELAY_W;
214 $DELAY = -50;
215}
216
217sub transport_reset {
113 my ($self) = @_; 218 my ($self) = @_;
114 219
115 Scalar::Util::weaken $self; 220 Scalar::Util::weaken $self;
116 221
117 $self->{retry} ||= [split /,/, $self->{noderef}]; 222 $self->{send} = sub {
118 223 if ($DELAY++ >= 0) {
119 my $endpoint = shift @{ $self->{retry} }; 224 my $msg = $_[0];
120 225 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
121 if (defined $endpoint) { 226 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
122 $self->{trial}{$endpoint} ||= do {
123 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
124 or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference.");
125
126 my ($w, $g);
127
128 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
129 delete $self->{trial}{$endpoint};
130 };
131 $g = AnyEvent::MP::Transport::mp_connect
132 $host, $port,
133 sub {
134 delete $self->{trial}{$endpoint}
135 unless @_;
136 $g = shift;
137 };
138 ; 227 return;
139
140 [$w, \$g]
141 }; 228 }
142 } else { 229
143 $self->fail (transport_error => $self->{noderef}, "unable to connect"); 230 local $AnyEvent::MP::Kernel::SRCNODE = $self;
231 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
144 } 232 };
145
146 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
147 delete $self->{retry};
148 $self->connect;
149 };
150} 233}
151 234
152package AnyEvent::MP::Node::Slave; 235sub transport_connect {
153
154use base "AnyEvent::MP::Node::Direct";
155
156sub connect {
157 my ($self) = @_; 236 my ($self, $tp) = @_;
158 237
159 $self->fail (transport_error => $self->{noderef}, "unable to connect to slave node"); 238 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
160}
161
162package AnyEvent::MP::Node::Self;
163
164use base "AnyEvent::MP::Node";
165
166sub set_transport {
167 Carp::confess "FATAL error, set_transport was called on local node";
168}
169
170sub send {
171 local $AnyEvent::MP::Base::SRCNODE = $_[0];
172 AnyEvent::MP::Base::_inject (@{ $_[1] });
173} 239}
174 240
175sub kill { 241sub kill {
176 my ($self, $port, @reason) = @_; 242 my ($self, $port, @reason) = @_;
177 243
244 my $delay_cb = sub {
178 delete $AnyEvent::MP::Base::PORT{$port}; 245 delete $AnyEvent::MP::Kernel::PORT{$port};
179 delete $AnyEvent::MP::Base::PORT_DATA{$port}; 246 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
180 247
181 my $mon = delete $AnyEvent::MP::Base::LMON{$port} 248 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
182 or !@reason 249 or !@reason
183 or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason"); 250 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
184 251
185 $_->(@reason) for values %$mon; 252 $_->(@reason) for values %$mon;
253 };
254
255 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
186} 256}
187 257
188sub monitor { 258sub monitor {
189 my ($self, $portid, $cb) = @_; 259 my ($self, $portid, $cb) = @_;
190 260
261 my $delay_cb = sub {
191 return $cb->(no_such_port => "cannot monitor nonexistent port") 262 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid")
192 unless exists $AnyEvent::MP::Base::PORT{$portid}; 263 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
193 264
194 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 265 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
266 };
267
268 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
195} 269}
196 270
197sub unmonitor { 271sub unmonitor {
198 my ($self, $portid, $cb) = @_; 272 my ($self, $portid, $cb) = @_;
199 273
274 my $delay_cb = sub {
200 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 275 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
276 };
277
278 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
201} 279}
202 280
203=head1 SEE ALSO 281=head1 SEE ALSO
204 282
205L<AnyEvent>. 283L<AnyEvent::MP>.
206 284
207=head1 AUTHOR 285=head1 AUTHOR
208 286
209 Marc Lehmann <schmorp@schmorp.de> 287 Marc Lehmann <schmorp@schmorp.de>
210 http://home.schmorp.de/ 288 http://home.schmorp.de/

Diff Legend

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