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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 1.58 by root, Fri Mar 2 19:21:16 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 = @{ $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}} };
129
130 unless (@addresses) {
131 # on global nodes, all bets are off now - we either know the node, or we don't
132 unless ($AnyEvent::MP::Kernel::GLOBAL) {
133 AnyEvent::MP::Kernel::g_find ($self->{id});
134 }
135 return;
136 }
137
138 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
139
140 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
141
142 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
143
144 $interval = ($monitor - $interval) / @addresses
145 if ($monitor - $interval) / @addresses < $interval;
146
147 $interval = 0.4 if $interval < 0.4;
148
149 my @endpoints;
150
151 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
152 @endpoints = @addresses
153 unless @endpoints;
154
155 my $endpoint = shift @endpoints;
156
157 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
158
159 $self->{trial}{$endpoint} ||= do {
160 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
161 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
162
163 AnyEvent::MP::Transport::mp_connect
164 $host, $port,
165 sub { delete $self->{trial}{$endpoint} },
122 }; 166 };
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 } 167 };
152} 168}
153 169
154sub kill { 170sub kill {
155 my ($self, $port, @reason) = @_; 171 my ($self, $port, @reason) = @_;
156 172
157 $self->send (["", kil => $port, @reason]); 173 $self->{send} (["", kil => $port, @reason]);
158} 174}
159 175
160sub monitor { 176sub monitor {
161 my ($self, $portid, $cb) = @_; 177 my ($self, $portid, $cb) = @_;
162 178
… …
180 $self->send (["", mon0 => $portid]); 196 $self->send (["", mon0 => $portid]);
181 delete $self->{monitor}{$portid}; 197 delete $self->{monitor}{$portid};
182 } 198 }
183} 199}
184 200
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; 201package AnyEvent::MP::Node::Self;
191 202
192use base "AnyEvent::MP::Node"; 203use base "AnyEvent::MP::Node";
193 204
194sub connect { 205sub connect {
195 # we are trivially connected 206 # we are trivially connected
196} 207}
197 208
209# delay every so often to avoid recursion, also used to delay after spawn
210our $DELAY = -50;
211our @DELAY;
212our $DELAY_W;
213
214sub _send_delayed {
215 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
216 (shift @DELAY)->()
217 while @DELAY;
218 undef $DELAY_W;
219 $DELAY = -50;
220}
221
198sub transport_reset { 222sub transport_reset {
199 my ($self) = @_; 223 my ($self) = @_;
200 224
201 Scalar::Util::weaken $self; 225 Scalar::Util::weaken $self;
202 226
203 $self->{send} = sub { 227 $self->{send} = sub {
228 if ($DELAY++ >= 0) {
229 my $msg = $_[0];
230 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
231 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
232 return;
233 }
234
204 local $AnyEvent::MP::Kernel::SRCNODE = $self; 235 local $AnyEvent::MP::Kernel::SRCNODE = $self;
205 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 236 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
206 }; 237 };
207} 238}
208 239
… …
211 242
212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 243 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
213} 244}
214 245
215sub kill { 246sub kill {
216 my ($self, $port, @reason) = @_; 247 my (undef, @args) = @_;
217 248
218 delete $AnyEvent::MP::Kernel::PORT{$port}; 249 # we _always_ delay kil's, to avoid calling mon callbacks
219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 250 # from anything but the event loop context.
220 251 $DELAY = 1;
221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 252 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
222 or !@reason 253 $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} 254}
227 255
228sub monitor { 256sub monitor {
229 my ($self, $portid, $cb) = @_; 257 # maybe always delay, too?
230 258 if ($DELAY_W) {
231 return $cb->(no_such_port => "cannot monitor nonexistent port") 259 my @args = @_;
232 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 260 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
233 261 return;
234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 262 }
263 &AnyEvent::MP::Kernel::_monitor;
235} 264}
236 265
237sub unmonitor { 266sub unmonitor {
238 my ($self, $portid, $cb) = @_; 267 # no need to always delay
268 if ($DELAY_W) {
269 my @args = @_;
270 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
271 return;
272 }
239 273
240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 274 &AnyEvent::MP::Kernel::_unmonitor;
241} 275}
242 276
243=head1 SEE ALSO 277=head1 SEE ALSO
244 278
245L<AnyEvent::MP>. 279L<AnyEvent::MP>.

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