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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.20 by root, Thu Aug 13 00:23:36 2009 UTC vs.
Revision 1.53 by root, Tue Feb 28 18:37:24 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
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
… …
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23sub new { 25sub new {
24 my ($self, $noderef) = @_; 26 my ($self, $id) = @_;
25 27
26 $self = bless { noderef => $noderef }, $self; 28 $self = bless { id => $id }, $self;
27 29
30 $self->init;
28 $self->transport_reset; 31 $self->transport_reset;
29 32
30 $self 33 $self
34}
35
36sub init {
37 #
31} 38}
32 39
33sub send { 40sub send {
34 &{ shift->{send} } 41 &{ shift->{send} }
35} 42}
36 43
44# nodes reachable via the network
37package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::Remote;
38 46
39use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
40 48
41# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
42sub transport_reset { 50sub transport_reset {
… …
50 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
51 $self->connect; 59 $self->connect;
52 }; 60 };
53} 61}
54 62
55# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
56sub transport_error { 65sub transport_error {
57 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
58 67
59 $self->{transport} 68 my $no_transport = !$self->{transport};
60 or return; 69
70 delete $self->{connect_w};
71 delete $self->{connect_to};
61 72
62 delete $self->{queue}; 73 delete $self->{queue};
63 $self->transport_reset; 74 $self->transport_reset;
64 75
65 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason);
66
67 if (my $mon = delete $self->{lmon}) { 76 if (my $mon = delete $self->{lmon}) {
68 $_->(@reason) for map @$_, values %$mon; 77 $_->(@reason) for map @$_, values %$mon;
69 } 78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
70} 86}
71 87
72# called after handshake was successful 88# called after handshake was successful
73sub transport_connect { 89sub transport_connect {
74 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
75 91
92 delete $self->{trial};
93
76 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
77 if $self->{transport}; 95 if $self->{transport};
78 96
97 delete $self->{connect_addr};
79 delete $self->{connect_w}; 98 delete $self->{connect_w};
80 delete $self->{connect_to}; 99 delete $self->{connect_to};
81 100
82 $self->{transport} = $transport; 101 $self->{transport} = $transport;
83 102
84 my $transport_send = $transport->can ("send"); 103 my $transport_send = $transport->{send};
85
86 $self->{send} = sub {
87 $transport_send->($transport, $_[0]);
88 };
89 104
90 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
91 106
107 $self->{send} = $transport_send;
108
92 $transport->send ($_) 109 $transport_send->($_)
93 for @{ delete $self->{queue} || [] }; 110 for @{ delete $self->{queue} || [] };
94} 111}
95 112
96sub connect { 113sub connect {
97 my ($self) = @_; 114 my ($self) = @_;
98 115
116 return if $self->{transport};
117
99 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
100 119
120 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
121
101 $self->{connect_to} ||= AE::timer 122 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
102 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
103 0,
104 sub {
105 $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); 123 $self->transport_error (transport_error => $self->{id}, "unable to connect");
124 };
125
126 # maybe @$addresses?
127 my @addresses = @{
128 $AnyEvent::MP::Kernel::GLOBAL_ADDR->{$self->{id}}
129 || $AnyEvent::MP::Kernel::NODE_ADDR->{$self->{id}}
130 };
131
132 unless (@addresses) {
133 # on global nodes, all betsa re off now - we either know the node, or we don't
134 unless ($AnyEvent::MP::Kernel::GLOBAL) {
135 $self->{connect_w} = AnyEvent::MP::Kernel::global_req (
136 global_find => $self->{id},
137 sub {
138 return unless $self; # just to be sure
139 return unless @{ $_[0] };
140
141 local $AnyEvent::MP::Kernel::GLOBAL_ADDR->{$self->{id}} = $_[0]; #d# UGLY
142 $self->connect;
143 }
144 );
145 }
146
147 return;
148 }
149
150 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
151
152 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
153
154 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
155
156 $interval = ($monitor - $interval) / @addresses
157 if ($monitor - $interval) / @addresses < $interval;
158
159 $interval = 0.4 if $interval < 0.4;
160
161 my @endpoints;
162
163 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
164 @endpoints = @addresses
165 unless @endpoints;
166
167 my $endpoint = shift @endpoints;
168
169 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
170
171 $self->{trial}{$endpoint} ||= do {
172 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
173 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
174
175 AnyEvent::MP::Transport::mp_connect
176 $host, $port,
177 sub { delete $self->{trial}{$endpoint} },
106 }; 178 };
107
108 unless ($self->{connect_w}) {
109 my @endpoints;
110 my %trial;
111
112 $self->{connect_w} = AE::timer
113 0,
114 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
115 sub {
116 @endpoints = split /,/, $self->{noderef}
117 unless @endpoints;
118
119 my $endpoint = shift @endpoints;
120
121 $trial{$endpoint} ||= do {
122 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
123 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
124
125 AnyEvent::MP::Transport::mp_connect
126 $host, $port,
127 sub { delete $trial{$endpoint} }
128 ;
129 };
130 }
131 ;
132 } 179 };
133} 180}
134 181
135sub kill { 182sub kill {
136 my ($self, $port, @reason) = @_; 183 my ($self, $port, @reason) = @_;
137 184
138 $self->send (["", kil => $port, @reason]); 185 $self->{send} (["", kil => $port, @reason]);
139} 186}
140 187
141sub monitor { 188sub monitor {
142 my ($self, $portid, $cb) = @_; 189 my ($self, $portid, $cb) = @_;
143 190
144 my $list = $self->{lmon}{$portid} ||= []; 191 my $list = $self->{lmon}{$portid} ||= [];
145 192
146 $self->send (["", mon1 => $portid]) 193 $self->send (["", mon1 => $portid])
147 unless @$list; 194 unless @$list || !length $portid;
148 195
149 push @$list, $cb; 196 push @$list, $cb;
150} 197}
151 198
152sub unmonitor { 199sub unmonitor {
… …
161 $self->send (["", mon0 => $portid]); 208 $self->send (["", mon0 => $portid]);
162 delete $self->{monitor}{$portid}; 209 delete $self->{monitor}{$portid};
163 } 210 }
164} 211}
165 212
166package AnyEvent::MP::Node::Direct;
167
168use base "AnyEvent::MP::Node::External";
169
170package AnyEvent::MP::Node::Indirect;
171
172use base "AnyEvent::MP::Node::Direct";
173
174sub connect {
175 my ($self) = @_;
176
177 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
178}
179
180package AnyEvent::MP::Node::Self; 213package AnyEvent::MP::Node::Self;
181 214
182use base "AnyEvent::MP::Node"; 215use base "AnyEvent::MP::Node";
183 216
184sub connect { 217sub connect {
185 # we are trivially connected 218 # we are trivially connected
186} 219}
187 220
221# delay every so often to avoid recursion, also used to delay after spawn
222our $DELAY = -50;
223our @DELAY;
224our $DELAY_W;
225
226sub _send_delayed {
227 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
228 (shift @DELAY)->()
229 while @DELAY;
230 undef $DELAY_W;
231 $DELAY = -50;
232}
233
188sub transport_reset { 234sub transport_reset {
189 my ($self) = @_; 235 my ($self) = @_;
190 236
191 Scalar::Util::weaken $self; 237 Scalar::Util::weaken $self;
192 238
193 $self->{send} = sub { 239 $self->{send} = sub {
240 if ($DELAY++ >= 0) {
241 my $msg = $_[0];
242 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
243 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
244 return;
245 }
246
194 local $AnyEvent::MP::Kernel::SRCNODE = $self; 247 local $AnyEvent::MP::Kernel::SRCNODE = $self;
195 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 248 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
196 }; 249 };
197} 250}
198 251
252sub transport_connect {
253 my ($self, $tp) = @_;
254
255 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
256}
257
199sub kill { 258sub kill {
200 my ($self, $port, @reason) = @_; 259 my (undef, @args) = @_;
201 260
202 delete $AnyEvent::MP::Kernel::PORT{$port}; 261 # we _always_ delay kil's, to avoid calling mon callbacks
203 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 262 # from anything but the event loop context.
204 263 $DELAY = 1;
205 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 264 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
206 or !@reason 265 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
207 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
208
209 $_->(@reason) for values %$mon;
210} 266}
211 267
212sub monitor { 268sub monitor {
213 my ($self, $portid, $cb) = @_; 269 # maybe always delay, too?
214 270 if ($DELAY_W) {
215 return $cb->(no_such_port => "cannot monitor nonexistent port") 271 my @args = @_;
216 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 272 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
217 273 return;
218 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 274 }
275 &AnyEvent::MP::Kernel::_monitor;
219} 276}
220 277
221sub unmonitor { 278sub unmonitor {
222 my ($self, $portid, $cb) = @_; 279 # no need to always delay
280 if ($DELAY_W) {
281 my @args = @_;
282 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
283 return;
284 }
223 285
224 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 286 &AnyEvent::MP::Kernel::_unmonitor;
225} 287}
226 288
227=head1 SEE ALSO 289=head1 SEE ALSO
228 290
229L<AnyEvent::MP>. 291L<AnyEvent::MP>.

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