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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.4 by root, Sat Aug 1 15:04:30 2009 UTC vs.
Revision 1.56 by root, Thu Mar 1 18:11:56 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 (); 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 $self
34}
35
36sub init {
37 #
38}
39
40#d# only needed for bad global code at the moment
41sub transport_error {
42}
43
44sub send {
45 &{ shift->{send} }
46}
47
48# nodes reachable via the network
32package AnyEvent::MP::Node::Direct; 49package AnyEvent::MP::Node::Remote;
33 50
34use base "AnyEvent::MP::Node"; 51use base "AnyEvent::MP::Node";
35 52
36sub send { 53# called at init time, mostly sets {send}
54sub transport_reset {
37 my ($self, $msg) = @_; 55 my ($self) = @_;
38 56
39 if ($self->{transport}) { 57 delete $self->{transport};
40 $self->{transport}->send ($msg); 58
41 } elsif ($self->{queue}) { 59 Scalar::Util::weaken $self;
60
61 $self->{send} = sub {
42 push @{ $self->{queue} }, $msg; 62 push @{$self->{queue}}, shift;
43 } else {
44 $self->{queue} = [$msg];
45 $self->connect; 63 $self->connect;
46 } 64 };
47} 65}
48 66
67# called each time we fail to establish a connection,
68# or the existing connection failed
49sub set_transport { 69sub transport_error {
70 my ($self, @reason) = @_;
71
72 my $no_transport = !$self->{transport};
73
74 delete $self->{connect_w};
75 delete $self->{connect_to};
76
77 delete $self->{queue};
78 $self->transport_reset;
79
80 if (my $mon = delete $self->{lmon}) {
81 $_->(@reason) for map @$_, values %$mon;
82 }
83
84 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
85 unless $no_transport;
86
87 # if we are here and are idle, we nuke ourselves
88 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
89 unless $self->{transport} || $self->{connect_to};
90}
91
92# called after handshake was successful
93sub transport_connect {
50 my ($self, $transport) = @_; 94 my ($self, $transport) = @_;
51 95
52 delete $self->{trial}; 96 delete $self->{trial};
97
98 $self->transport_error (transport_error => $self->{id}, "switched connections")
99 if $self->{transport};
100
101 delete $self->{connect_addr};
53 delete $self->{next_connect}; 102 delete $self->{connect_w};
103 delete $self->{connect_to};
54 104
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; 105 $self->{transport} = $transport;
66 106
107 my $transport_send = $transport->{send};
108
109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
110
111 $self->{send} = $transport_send;
112
67 $transport->send ($_) 113 $transport_send->($_)
68 for @{ delete $self->{queue} || [] }; 114 for @{ delete $self->{queue} || [] };
69}
70
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75
76 $self->connect;
77} 115}
78 116
79sub connect { 117sub connect {
80 my ($self) = @_; 118 my ($self) = @_;
81 119
120 return if $self->{transport};
121 return if $self->{connect_w};
122
82 Scalar::Util::weaken $self; 123 Scalar::Util::weaken $self;
83 124
84 unless (exists $self->{n_noderef}) { 125 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
85 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub {
86 $self or return;
87 my $noderef = shift->recv;
88 126
89 $self->{n_noderef} = $noderef; 127 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
128 $self->transport_error (transport_error => $self->{id}, "unable to connect");
129 };
90 130
91 $AnyEvent::MP::NODE{$_} = $self 131 # maybe @$addresses?
92 for split /,/, $noderef; 132 my @addresses = @{ $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}} };
93 133
94 $self->connect; 134 unless (@addresses) {
135 # on global nodes, all bets are off now - we either know the node, or we don't
136 unless ($AnyEvent::MP::Kernel::GLOBAL) {
137 $self->{connect_w} = AnyEvent::MP::Kernel::global_req (g_find => $self->{id});
95 }); 138 }
96 return; 139 return;
97 } 140 }
98 141
99 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 142 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
100 143
101 my $endpoint = shift @{ $self->{retry} }; 144 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
102 145
103 if (defined $endpoint) { 146 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
147
148 $interval = ($monitor - $interval) / @addresses
149 if ($monitor - $interval) / @addresses < $interval;
150
151 $interval = 0.4 if $interval < 0.4;
152
153 my @endpoints;
154
155 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
156 @endpoints = @addresses
157 unless @endpoints;
158
159 my $endpoint = shift @endpoints;
160
161 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
162
104 $self->{trial}{$endpoint} ||= do { 163 $self->{trial}{$endpoint} ||= do {
105 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 164 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
106 or return; 165 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
107 166
108 my ($w, $g);
109
110 $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub {
111 delete $self->{trial}{$endpoint};
112 };
113 $g = AnyEvent::MP::Transport::mp_connect 167 AnyEvent::MP::Transport::mp_connect
114 $host, $port, 168 $host, $port,
115 sub {
116 delete $self->{trial}{$endpoint} 169 sub { delete $self->{trial}{$endpoint} },
117 unless @_;
118 $g = shift;
119 };
120 ;
121
122 [$w, \$g]
123 }; 170 };
124 } else {
125 delete $self->{retry};
126 } 171 };
172}
127 173
128 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { 174sub kill {
129 $self->connect; 175 my ($self, $port, @reason) = @_;
176
177 $self->{send} (["", kil => $port, @reason]);
178}
179
180sub monitor {
181 my ($self, $portid, $cb) = @_;
182
183 my $list = $self->{lmon}{$portid} ||= [];
184
185 $self->send (["", mon1 => $portid])
186 unless @$list || !length $portid;
187
188 push @$list, $cb;
189}
190
191sub unmonitor {
192 my ($self, $portid, $cb) = @_;
193
194 my $list = $self->{lmon}{$portid}
195 or return;
196
197 @$list = grep $_ != $cb, @$list;
198
199 unless (@$list) {
200 $self->send (["", mon0 => $portid]);
201 delete $self->{monitor}{$portid};
130 }; 202 }
131} 203}
132 204
133package AnyEvent::MP::Node::Self; 205package AnyEvent::MP::Node::Self;
134 206
135use base "AnyEvent::MP::Node"; 207use base "AnyEvent::MP::Node";
136 208
209sub connect {
210 # we are trivially connected
211}
212
213# delay every so often to avoid recursion, also used to delay after spawn
214our $DELAY = -50;
215our @DELAY;
216our $DELAY_W;
217
218sub _send_delayed {
219 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
220 (shift @DELAY)->()
221 while @DELAY;
222 undef $DELAY_W;
223 $DELAY = -50;
224}
225
137sub set_transport { 226sub transport_reset {
138 die "FATAL error, set_transport was called"; 227 my ($self) = @_;
139}
140 228
141sub send { 229 Scalar::Util::weaken $self;
230
231 $self->{send} = sub {
232 if ($DELAY++ >= 0) {
233 my $msg = $_[0];
234 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
235 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
236 return;
237 }
238
239 local $AnyEvent::MP::Kernel::SRCNODE = $self;
142 AnyEvent::MP::_inject ($_[1]); 240 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
241 };
242}
243
244sub transport_connect {
245 my ($self, $tp) = @_;
246
247 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
248}
249
250sub kill {
251 my (undef, @args) = @_;
252
253 # we _always_ delay kil's, to avoid calling mon callbacks
254 # from anything but the event loop context.
255 $DELAY = 1;
256 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
257 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
258}
259
260sub monitor {
261 # maybe always delay, too?
262 if ($DELAY_W) {
263 my @args = @_;
264 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
265 return;
266 }
267 &AnyEvent::MP::Kernel::_monitor;
268}
269
270sub unmonitor {
271 # no need to always delay
272 if ($DELAY_W) {
273 my @args = @_;
274 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
275 return;
276 }
277
278 &AnyEvent::MP::Kernel::_unmonitor;
143} 279}
144 280
145=head1 SEE ALSO 281=head1 SEE ALSO
146 282
147L<AnyEvent>. 283L<AnyEvent::MP>.
148 284
149=head1 AUTHOR 285=head1 AUTHOR
150 286
151 Marc Lehmann <schmorp@schmorp.de> 287 Marc Lehmann <schmorp@schmorp.de>
152 http://home.schmorp.de/ 288 http://home.schmorp.de/

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