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 1.24 by root, Sat Aug 15 04:34:34 2009 UTC vs.
Revision 1.57 by root, Thu Mar 1 18:31:42 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 #
38}
39
40#d# only needed for bad global code at the moment
41sub transport_error {
31} 42}
32 43
33sub send { 44sub send {
34 &{ shift->{send} } 45 &{ shift->{send} }
35} 46}
36 47
48# nodes reachable via the network
37package AnyEvent::MP::Node::External; 49package AnyEvent::MP::Node::Remote;
38 50
39use base "AnyEvent::MP::Node"; 51use base "AnyEvent::MP::Node";
40 52
41# called at init time, mostly sets {send} 53# called at init time, mostly sets {send}
42sub transport_reset { 54sub transport_reset {
… …
48 60
49 $self->{send} = sub { 61 $self->{send} = sub {
50 push @{$self->{queue}}, shift; 62 push @{$self->{queue}}, shift;
51 $self->connect; 63 $self->connect;
52 }; 64 };
53
54 $self->connect
55 if $self->{autoconnect};
56} 65}
57 66
58# called only after successful handshake 67# called each time we fail to establish a connection,
68# or the existing connection failed
59sub transport_error { 69sub transport_error {
60 my ($self, @reason) = @_; 70 my ($self, @reason) = @_;
61 71
62 my $no_transport = !$self->{transport}; 72 my $no_transport = !$self->{transport};
63 73
… …
65 delete $self->{connect_to}; 75 delete $self->{connect_to};
66 76
67 delete $self->{queue}; 77 delete $self->{queue};
68 $self->transport_reset; 78 $self->transport_reset;
69 79
80 if (my $mon = delete $self->{lmon}) {
81 $_->(@reason) for map @$_, values %$mon;
82 }
83
70 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 84 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
71 unless $no_transport; 85 unless $no_transport;
72 86
73 if (my $mon = delete $self->{lmon}) { 87 # if we are here and are idle, we nuke ourselves
74 $_->(@reason) for map @$_, values %$mon; 88 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
75 } 89 unless $self->{transport} || $self->{connect_to};
76} 90}
77 91
78# called after handshake was successful 92# called after handshake was successful
79sub transport_connect { 93sub transport_connect {
80 my ($self, $transport) = @_; 94 my ($self, $transport) = @_;
81 95
82 # first connect with a master node 96 delete $self->{trial};
83 $AnyEvent::MP::Kernel::SLAVE->($self)
84 if ref $AnyEvent::MP::Kernel::SLAVE;
85 97
86 $self->transport_error (transport_error => "switched connections") 98 $self->transport_error (transport_error => $self->{id}, "switched connections")
87 if $self->{transport}; 99 if $self->{transport};
88 100
101 delete $self->{connect_addr};
89 delete $self->{connect_w}; 102 delete $self->{connect_w};
90 delete $self->{connect_to}; 103 delete $self->{connect_to};
91 104
92 $self->{transport} = $transport; 105 $self->{transport} = $transport;
93 106
94 my $transport_send = $transport->can ("send"); 107 my $transport_send = $transport->{send};
95
96 $self->{send} = sub {
97 $transport_send->($transport, $_[0]);
98 };
99 108
100 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
101 110
111 $self->{send} = $transport_send;
112
102 $transport->send ($_) 113 $transport_send->($_)
103 for @{ delete $self->{queue} || [] }; 114 for @{ delete $self->{queue} || [] };
104} 115}
105 116
106sub connect { 117sub connect {
107 my ($self) = @_; 118 my ($self) = @_;
108 119
109 return if $self->{transport}; 120 return if $self->{transport};
121 return if $self->{connect_w};
110 122
111 Scalar::Util::weaken $self; 123 Scalar::Util::weaken $self;
112 124
125 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
126
113 $self->{connect_to} ||= AE::timer 127 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
114 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
115 0,
116 sub {
117 $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); 128 $self->transport_error (transport_error => $self->{id}, "unable to connect");
129 };
130
131 # maybe @$addresses?
132 my @addresses = @{ $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}} };
133
134 unless (@addresses) {
135 # on global nodes, all bets are off now - we either know the node, or we don't
136 unless ($AnyEvent::MP::Kernel::GLOBAL) {
137 AnyEvent::MP::Kernel::g_find ($self->{id});
138 }
139 return;
140 }
141
142 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
143
144 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
145
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
163 $self->{trial}{$endpoint} ||= do {
164 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
165 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
166
167 AnyEvent::MP::Transport::mp_connect
168 $host, $port,
169 sub { delete $self->{trial}{$endpoint} },
118 }; 170 };
119
120 unless ($self->{connect_w}) {
121 my @endpoints;
122 my %trial;
123
124 $self->{connect_w} = AE::timer
125 0,
126 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
127 sub {
128 @endpoints = split /,/, $self->{noderef}
129 unless @endpoints;
130
131 my $endpoint = shift @endpoints;
132
133 $trial{$endpoint} ||= do {
134 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
135 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
136
137 AnyEvent::MP::Transport::mp_connect
138 $host, $port,
139 sub { delete $trial{$endpoint} }
140 ;
141 };
142 }
143 ;
144 } 171 };
145} 172}
146 173
147sub kill { 174sub kill {
148 my ($self, $port, @reason) = @_; 175 my ($self, $port, @reason) = @_;
149 176
150 $self->send (["", kil => $port, @reason]); 177 $self->{send} (["", kil => $port, @reason]);
151} 178}
152 179
153sub monitor { 180sub monitor {
154 my ($self, $portid, $cb) = @_; 181 my ($self, $portid, $cb) = @_;
155 182
… …
173 $self->send (["", mon0 => $portid]); 200 $self->send (["", mon0 => $portid]);
174 delete $self->{monitor}{$portid}; 201 delete $self->{monitor}{$portid};
175 } 202 }
176} 203}
177 204
178package AnyEvent::MP::Node::Direct; 205package AnyEvent::MP::Node::Self;
179 206
180use base "AnyEvent::MP::Node::External";
181
182package AnyEvent::MP::Node::Indirect;
183
184use base "AnyEvent::MP::Node::Direct"; 207use base "AnyEvent::MP::Node";
185 208
186sub master { 209sub connect {
187 my ($self) = @_; 210 # we are trivially connected
211}
188 212
189 my (undef, $master) = split /\@/, $self->{noderef}, 2; 213# delay every so often to avoid recursion, also used to delay after spawn
190 $master =~ s/!/,/g; 214our $DELAY = -50;
191 $master 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 $DELAY = -50;
192} 224}
193 225
194sub transport_reset { 226sub transport_reset {
195 my ($self) = @_; 227 my ($self) = @_;
196 228
197 if ($self->{transport}) {
198 # as an optimisation, immediately nuke slave nodes
199 delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}};
200 } else {
201 $self->SUPER::transport_reset;
202 return;#d##TODO#
203
204 my $noderef = $self->{noderef};
205 my $master = $self->master;
206
207 # slave nodes are so cool - we can always send to them :)
208
209 $self->{send} = sub {
210 $self->connect;
211 snd $master, snd => $noderef, @_;
212 };
213 }
214}
215
216sub connect {
217 my ($self) = @_;
218
219 #TODO#
220# # ask for a connection, #TODO# rate-limit this somehow
221# snd $self->master, relay => $self->{noderef}, connect_node => $AnyEvent::MP::Kernel::NODE;
222}
223
224package AnyEvent::MP::Node::Self;
225
226use base "AnyEvent::MP::Node";
227
228sub connect {
229 # we are trivially connected
230}
231
232sub transport_reset {
233 my ($self) = @_;
234
235 Scalar::Util::weaken $self; 229 Scalar::Util::weaken $self;
236 230
237 $self->{send} = sub { 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
238 local $AnyEvent::MP::Kernel::SRCNODE = $self; 239 local $AnyEvent::MP::Kernel::SRCNODE = $self;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 240 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 }; 241 };
241} 242}
242 243
244sub transport_connect {
245 my ($self, $tp) = @_;
246
247 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
248}
249
243sub kill { 250sub kill {
244 my ($self, $port, @reason) = @_; 251 my (undef, @args) = @_;
245 252
246 delete $AnyEvent::MP::Kernel::PORT{$port}; 253 # we _always_ delay kil's, to avoid calling mon callbacks
247 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 254 # from anything but the event loop context.
248 255 $DELAY = 1;
249 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 256 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
250 or !@reason 257 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
251 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
252
253 $_->(@reason) for values %$mon;
254} 258}
255 259
256sub monitor { 260sub monitor {
257 my ($self, $portid, $cb) = @_; 261 # maybe always delay, too?
258 262 if ($DELAY_W) {
259 return $cb->(no_such_port => "cannot monitor nonexistent port") 263 my @args = @_;
260 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 264 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
261 265 return;
262 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 266 }
267 &AnyEvent::MP::Kernel::_monitor;
263} 268}
264 269
265sub unmonitor { 270sub unmonitor {
266 my ($self, $portid, $cb) = @_; 271 # no need to always delay
272 if ($DELAY_W) {
273 my @args = @_;
274 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
275 return;
276 }
267 277
268 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 278 &AnyEvent::MP::Kernel::_unmonitor;
269} 279}
270 280
271=head1 SEE ALSO 281=head1 SEE ALSO
272 282
273L<AnyEvent::MP>. 283L<AnyEvent::MP>.

Diff Legend

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