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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.22 by root, Thu Aug 13 22:50:47 2009 UTC vs.
Revision 1.63 by root, Fri Mar 23 03:24:41 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;
14 16
15use common::sense; 17use common::sense;
16 18
17use AE ();
18use AnyEvent::Util (); 19use AnyEvent ();
19use AnyEvent::Socket (); 20use AnyEvent::Socket ();
20 21
21use AnyEvent::MP::Transport (); 22use AnyEvent::MP::Transport ();
22 23
23sub new { 24sub new {
24 my ($self, $noderef) = @_; 25 my ($self, $id) = @_;
25 26
26 $self = bless { noderef => $noderef }, $self; 27 $self = bless { id => $id }, $self;
27 28
29 $self->init;
28 $self->transport_reset; 30 $self->transport_reset;
29 31
30 $self 32 $self
33}
34
35sub init {
36 #
31} 37}
32 38
33sub send { 39sub send {
34 &{ shift->{send} } 40 &{ shift->{send} }
35} 41}
36 42
43# nodes reachable via the network
37package AnyEvent::MP::Node::External; 44package AnyEvent::MP::Node::Remote;
38 45
39use base "AnyEvent::MP::Node"; 46use base "AnyEvent::MP::Node";
40 47
41# called at init time, mostly sets {send} 48# called at init time, mostly sets {send}
42sub transport_reset { 49sub transport_reset {
… …
50 push @{$self->{queue}}, shift; 57 push @{$self->{queue}}, shift;
51 $self->connect; 58 $self->connect;
52 }; 59 };
53} 60}
54 61
55# called only after successful handshake 62# called each time we fail to establish a connection,
63# or the existing connection failed
56sub transport_error { 64sub transport_error {
57 my ($self, @reason) = @_; 65 my ($self, @reason) = @_;
58 66
59 my $no_transport = !$self->{transport}; 67 my $no_transport = !$self->{transport};
60 68
… …
62 delete $self->{connect_to}; 70 delete $self->{connect_to};
63 71
64 delete $self->{queue}; 72 delete $self->{queue};
65 $self->transport_reset; 73 $self->transport_reset;
66 74
75 if (my $mon = delete $self->{lmon}) {
76 $_->(@reason) for map @$_, values %$mon;
77 }
78
67 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
68 unless $no_transport; 80 unless $no_transport;
69 81
70 if (my $mon = delete $self->{lmon}) { 82 # if we are here and are idle, we nuke ourselves
71 $_->(@reason) for map @$_, values %$mon; 83 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
72 } 84 unless $self->{transport} || $self->{connect_to};
73} 85}
74 86
75# called after handshake was successful 87# called after handshake was successful
76sub transport_connect { 88sub transport_connect {
77 my ($self, $transport) = @_; 89 my ($self, $transport) = @_;
78 90
91 delete $self->{trial};
92
79 $self->transport_error (transport_error => "switched connections") 93 $self->transport_error (transport_error => $self->{id}, "switched connections")
80 if $self->{transport}; 94 if $self->{transport};
81 95
82 delete $self->{connect_w}; 96 delete $self->{connect_w};
83 delete $self->{connect_to}; 97 delete $self->{connect_to};
84 98
85 $self->{transport} = $transport; 99 $self->{transport} = $transport;
86 100
87 my $transport_send = $transport->can ("send"); 101 my $transport_send = $transport->{send};
88
89 $self->{send} = sub {
90 $transport_send->($transport, $_[0]);
91 };
92 102
93 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
94 104
105 $self->{send} = $transport_send;
106
95 $transport->send ($_) 107 $transport_send->($_)
96 for @{ delete $self->{queue} || [] }; 108 for @{ delete $self->{queue} || [] };
97} 109}
98 110
99sub connect { 111sub connect {
100 my ($self) = @_; 112 my ($self) = @_;
101 113
114 return if $self->{transport};
115 return if $self->{connect_w};
116
102 Scalar::Util::weaken $self; 117 Scalar::Util::weaken $self;
103 118
104 $self->{connect_to} ||= AE::timer 119 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
105 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
106 0,
107 sub {
108 $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); 120 $self->transport_error (transport_error => $self->{id}, "unable to connect");
121 };
122
123 # maybe @$addresses?
124 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
125
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}
135
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
161 $self->{trial}{$endpoint} ||= do {
162 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
163 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
164
165 AnyEvent::MP::Transport::mp_connect
166 $host, $port,
167 sub { delete $self->{trial}{$endpoint} },
109 }; 168 };
110
111 unless ($self->{connect_w}) {
112 my @endpoints;
113 my %trial;
114
115 $self->{connect_w} = AE::timer
116 0,
117 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
118 sub {
119 @endpoints = split /,/, $self->{noderef}
120 unless @endpoints;
121
122 my $endpoint = shift @endpoints;
123
124 $trial{$endpoint} ||= do {
125 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
126 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
127
128 AnyEvent::MP::Transport::mp_connect
129 $host, $port,
130 sub { delete $trial{$endpoint} }
131 ;
132 };
133 }
134 ;
135 } 169 };
136} 170}
137 171
138sub kill { 172sub kill {
139 my ($self, $port, @reason) = @_; 173 my ($self, $port, @reason) = @_;
140 174
141 $self->send (["", kil => $port, @reason]); 175 $self->{send} (["", kil => $port, @reason]);
142} 176}
143 177
144sub monitor { 178sub monitor {
145 my ($self, $portid, $cb) = @_; 179 my ($self, $portid, $cb) = @_;
146 180
147 my $list = $self->{lmon}{$portid} ||= []; 181 my $list = $self->{lmon}{$portid} ||= [];
148 182
149 $self->send (["", mon1 => $portid]) 183 $self->send (["", mon1 => $portid])
150 unless @$list; 184 unless @$list || !length $portid;
151 185
152 push @$list, $cb; 186 push @$list, $cb;
153} 187}
154 188
155sub unmonitor { 189sub unmonitor {
… …
164 $self->send (["", mon0 => $portid]); 198 $self->send (["", mon0 => $portid]);
165 delete $self->{monitor}{$portid}; 199 delete $self->{monitor}{$portid};
166 } 200 }
167} 201}
168 202
169package AnyEvent::MP::Node::Direct; 203package AnyEvent::MP::Node::Self;
170 204
171use base "AnyEvent::MP::Node::External";
172
173package AnyEvent::MP::Node::Indirect;
174
175use base "AnyEvent::MP::Node::Direct"; 205use base "AnyEvent::MP::Node";
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 $DELAY = -50;
222};
176 223
177sub transport_reset { 224sub transport_reset {
178 my ($self) = @_; 225 my ($self) = @_;
179 226
180 # as an optimisation, immediately nuke slave nodes
181 delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}}
182 if $self->{transport};
183
184 $self->SUPER::transport_reset;
185}
186
187sub connect {
188 my ($self) = @_;
189
190 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
191}
192
193package AnyEvent::MP::Node::Self;
194
195use base "AnyEvent::MP::Node";
196
197sub connect {
198 # we are trivially connected
199}
200
201sub transport_reset {
202 my ($self) = @_;
203
204 Scalar::Util::weaken $self; 227 Scalar::Util::weaken $self;
205 228
206 $self->{send} = sub { 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
207 local $AnyEvent::MP::Kernel::SRCNODE = $self; 237 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
208 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 238 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
209 }; 239 };
210} 240}
211 241
242sub transport_connect {
243 my ($self, $tp) = @_;
244
245 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
246}
247
212sub kill { 248sub kill {
213 my ($self, $port, @reason) = @_; 249 my (undef, @args) = @_;
214 250
215 delete $AnyEvent::MP::Kernel::PORT{$port}; 251 # we _always_ delay kil's, to avoid calling mon callbacks
216 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 252 # from anything but the event loop context.
217 253 $DELAY = 1;
218 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 254 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
219 or !@reason 255 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
220 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
221
222 $_->(@reason) for values %$mon;
223} 256}
224 257
225sub monitor { 258sub monitor {
226 my ($self, $portid, $cb) = @_; 259 # maybe always delay, too?
227 260 if ($DELAY_W) {
228 return $cb->(no_such_port => "cannot monitor nonexistent port") 261 my @args = @_;
229 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 262 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
230 263 return;
231 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 264 }
265 &AnyEvent::MP::Kernel::_monitor;
232} 266}
233 267
234sub unmonitor { 268sub unmonitor {
235 my ($self, $portid, $cb) = @_; 269 # no need to always delay
270 if ($DELAY_W) {
271 my @args = @_;
272 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
273 return;
274 }
236 275
237 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 276 &AnyEvent::MP::Kernel::_unmonitor;
238} 277}
239 278
240=head1 SEE ALSO 279=head1 SEE ALSO
241 280
242L<AnyEvent::MP>. 281L<AnyEvent::MP>.

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