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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.28 by root, Thu Aug 27 21:29:37 2009 UTC vs.
Revision 1.55 by root, Wed Feb 29 19:23:44 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
… …
38sub send { 40sub send {
39 &{ shift->{send} } 41 &{ shift->{send} }
40} 42}
41 43
42# nodes reachable via the network 44# nodes reachable via the network
43package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::Remote;
44 46
45use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
46 48
47# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
48sub transport_reset { 50sub transport_reset {
… …
54 56
55 $self->{send} = sub { 57 $self->{send} = sub {
56 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
57 $self->connect; 59 $self->connect;
58 }; 60 };
59
60 $self->connect
61 if $self->{autoconnect};
62} 61}
63 62
64# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error { 65sub transport_error {
66 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
67 67
68 my $no_transport = !$self->{transport}; 68 my $no_transport = !$self->{transport};
69 69
… …
71 delete $self->{connect_to}; 71 delete $self->{connect_to};
72 72
73 delete $self->{queue}; 73 delete $self->{queue};
74 $self->transport_reset; 74 $self->transport_reset;
75 75
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
78 }
79
76 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
77 unless $no_transport; 81 unless $no_transport;
78 82
79 if (my $mon = delete $self->{lmon}) { 83 # if we are here and are idle, we nuke ourselves
80 $_->(@reason) for map @$_, values %$mon; 84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
81 } 85 unless $self->{transport} || $self->{connect_to};
82} 86}
83 87
84# called after handshake was successful 88# called after handshake was successful
85sub transport_connect { 89sub transport_connect {
86 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
87 91
88 delete $self->{trial}; 92 delete $self->{trial};
89 93
90 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
91 if $self->{transport}; 95 if $self->{transport};
92 96
97 delete $self->{connect_addr};
93 delete $self->{connect_w}; 98 delete $self->{connect_w};
94 delete $self->{connect_to}; 99 delete $self->{connect_to};
95 100
96 $self->{transport} = $transport; 101 $self->{transport} = $transport;
97 102
98 my $transport_send = $transport->can ("send"); 103 my $transport_send = $transport->{send};
99
100 $self->{send} = sub {
101 $transport_send->($transport, $_[0]);
102 };
103 104
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105 106
107 $self->{send} = $transport_send;
108
106 $transport->send ($_) 109 $transport_send->($_)
107 for @{ delete $self->{queue} || [] }; 110 for @{ delete $self->{queue} || [] };
108} 111}
109 112
110sub connect { 113sub connect {
111 my ($self, @addresses) = @_; 114 my ($self) = @_;
112 115
113 return if $self->{transport}; 116 return if $self->{transport};
117 return if $self->{connect_w};
114 118
115 Scalar::Util::weaken $self; 119 Scalar::Util::weaken $self;
116 120
121 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
122
117 $self->{connect_to} ||= AE::timer 123 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
118 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
119 0,
120 sub {
121 $self->transport_error (transport_error => $self->{id}, "unable to connect"); 124 $self->transport_error (transport_error => $self->{id}, "unable to connect");
125 };
126
127 # maybe @$addresses?
128 my @addresses = @{
129 $AnyEvent::MP::Kernel::GLOBAL_ADDR->{$self->{id}}
130 || $AnyEvent::MP::Kernel::NODE_ADDR->{$self->{id}}
131 };
132
133 unless (@addresses) {
134 # on global nodes, all bets are off now - we either know the node, or we don't
135 unless ($AnyEvent::MP::Kernel::GLOBAL) {
136 $self->{connect_w} = AnyEvent::MP::Kernel::global_req (
137 g_find => $self->{id},
138 sub {
139 return unless $self; # just to be sure
140 return unless @{ $_[0] };
141
142 local $AnyEvent::MP::Kernel::GLOBAL_ADDR->{$self->{id}} = $_[0]; #d# UGLY
143 delete $self->{connect_w};
144 $self->connect;
145 }
146 );
147 }
148
149 return;
150 }
151
152 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
153
154 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
155
156 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
157
158 $interval = ($monitor - $interval) / @addresses
159 if ($monitor - $interval) / @addresses < $interval;
160
161 $interval = 0.4 if $interval < 0.4;
162
163 my @endpoints;
164
165 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
166 @endpoints = @addresses
167 unless @endpoints;
168
169 my $endpoint = shift @endpoints;
170
171 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
172
173 $self->{trial}{$endpoint} ||= do {
174 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
175 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
176
177 AnyEvent::MP::Transport::mp_connect
178 $host, $port,
179 sub { delete $self->{trial}{$endpoint} },
122 }; 180 };
123
124 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
125 return unless @addresses;
126
127 unless ($self->{connect_w}) {
128 my @endpoints;
129
130 $self->{connect_w} = AE::timer
131 rand,
132 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
133 sub {
134 @endpoints = @addresses
135 unless @endpoints;
136
137 my $endpoint = shift @endpoints;
138
139 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
140
141 $self->{trial}{$endpoint} ||= do {
142 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
143 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
144
145 AnyEvent::MP::Transport::mp_connect
146 $host, $port,
147 sub { delete $self->{trial}{$endpoint} },
148 };
149 }
150 ;
151 } 181 };
152} 182}
153 183
154sub kill { 184sub kill {
155 my ($self, $port, @reason) = @_; 185 my ($self, $port, @reason) = @_;
156 186
157 $self->send (["", kil => $port, @reason]); 187 $self->{send} (["", kil => $port, @reason]);
158} 188}
159 189
160sub monitor { 190sub monitor {
161 my ($self, $portid, $cb) = @_; 191 my ($self, $portid, $cb) = @_;
162 192
… …
180 $self->send (["", mon0 => $portid]); 210 $self->send (["", mon0 => $portid]);
181 delete $self->{monitor}{$portid}; 211 delete $self->{monitor}{$portid};
182 } 212 }
183} 213}
184 214
185# used for direct slave connections as well
186package AnyEvent::MP::Node::Direct;
187
188use base "AnyEvent::MP::Node::External";
189
190package AnyEvent::MP::Node::Self; 215package AnyEvent::MP::Node::Self;
191 216
192use base "AnyEvent::MP::Node"; 217use base "AnyEvent::MP::Node";
193 218
194sub connect { 219sub connect {
195 # we are trivially connected 220 # we are trivially connected
196} 221}
197 222
223# delay every so often to avoid recursion, also used to delay after spawn
224our $DELAY = -50;
225our @DELAY;
226our $DELAY_W;
227
228sub _send_delayed {
229 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
230 (shift @DELAY)->()
231 while @DELAY;
232 undef $DELAY_W;
233 $DELAY = -50;
234}
235
198sub transport_reset { 236sub transport_reset {
199 my ($self) = @_; 237 my ($self) = @_;
200 238
201 Scalar::Util::weaken $self; 239 Scalar::Util::weaken $self;
202 240
203 $self->{send} = sub { 241 $self->{send} = sub {
242 if ($DELAY++ >= 0) {
243 my $msg = $_[0];
244 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
245 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
246 return;
247 }
248
204 local $AnyEvent::MP::Kernel::SRCNODE = $self; 249 local $AnyEvent::MP::Kernel::SRCNODE = $self;
205 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 250 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
206 }; 251 };
207} 252}
208 253
… …
211 256
212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 257 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
213} 258}
214 259
215sub kill { 260sub kill {
216 my ($self, $port, @reason) = @_; 261 my (undef, @args) = @_;
217 262
218 delete $AnyEvent::MP::Kernel::PORT{$port}; 263 # we _always_ delay kil's, to avoid calling mon callbacks
219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 264 # from anything but the event loop context.
220 265 $DELAY = 1;
221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 266 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
222 or !@reason 267 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
223 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
224
225 $_->(@reason) for values %$mon;
226} 268}
227 269
228sub monitor { 270sub monitor {
229 my ($self, $portid, $cb) = @_; 271 # maybe always delay, too?
230 272 if ($DELAY_W) {
231 return $cb->(no_such_port => "cannot monitor nonexistent port") 273 my @args = @_;
232 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 274 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
233 275 return;
234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 276 }
277 &AnyEvent::MP::Kernel::_monitor;
235} 278}
236 279
237sub unmonitor { 280sub unmonitor {
238 my ($self, $portid, $cb) = @_; 281 # no need to always delay
282 if ($DELAY_W) {
283 my @args = @_;
284 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
285 return;
286 }
239 287
240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 288 &AnyEvent::MP::Kernel::_unmonitor;
241} 289}
242 290
243=head1 SEE ALSO 291=head1 SEE ALSO
244 292
245L<AnyEvent::MP>. 293L<AnyEvent::MP>.

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