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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.31 by root, Fri Aug 28 23:06:33 2009 UTC vs.
Revision 1.64 by root, Fri Mar 23 21:16:25 2012 UTC

… …
10 10
11This is an internal utility module, horrible to look at, so don't. 11This is an internal utility module, horrible to look at, so don't.
12 12
13=cut 13=cut
14 14
15package AnyEvent::MP::Node; 15package AnyEvent::MP::Node; # base class for nodes
16 16
17use common::sense; 17use common::sense;
18 18
19use AE ();
20use AnyEvent::Util (); 19use AnyEvent ();
21use AnyEvent::Socket (); 20use AnyEvent::Socket ();
22 21
23use AnyEvent::MP::Transport (); 22use AnyEvent::MP::Transport ();
24 23
25sub new { 24sub new {
… …
40sub send { 39sub send {
41 &{ shift->{send} } 40 &{ shift->{send} }
42} 41}
43 42
44# nodes reachable via the network 43# nodes reachable via the network
45package AnyEvent::MP::Node::External; 44package AnyEvent::MP::Node::Remote; # a remote node
46 45
47use base "AnyEvent::MP::Node"; 46use base "AnyEvent::MP::Node";
48 47
49# called at init time, mostly sets {send} 48# called at init time, mostly sets {send}
50sub transport_reset { 49sub transport_reset {
… …
58 push @{$self->{queue}}, shift; 57 push @{$self->{queue}}, shift;
59 $self->connect; 58 $self->connect;
60 }; 59 };
61} 60}
62 61
63# called only after successful handshake 62# called each time we fail to establish a connection,
63# or the existing connection failed
64sub transport_error { 64sub transport_error {
65 my ($self, @reason) = @_; 65 my ($self, @reason) = @_;
66 66
67 my $no_transport = !$self->{transport}; 67 my $no_transport = !$self->{transport};
68 68
… …
76 $_->(@reason) for map @$_, values %$mon; 76 $_->(@reason) for map @$_, values %$mon;
77 } 77 }
78 78
79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
80 unless $no_transport; 80 unless $no_transport;
81
82 # if we are here and are idle, we nuke ourselves
83 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
84 unless $self->{transport} || $self->{connect_to};
81} 85}
82 86
83# called after handshake was successful 87# called after handshake was successful
84sub transport_connect { 88sub transport_connect {
85 my ($self, $transport) = @_; 89 my ($self, $transport) = @_;
86 90
87 delete $self->{trial}; 91 delete $self->{trial};
88 92
89 $self->transport_error (transport_error => "switched connections") 93 $self->transport_error (transport_error => $self->{id}, "switched connections")
90 if $self->{transport}; 94 if $self->{transport};
91 95
92 delete $self->{connect_w}; 96 delete $self->{connect_w};
93 delete $self->{connect_to}; 97 delete $self->{connect_to};
94 98
95 $self->{transport} = $transport; 99 $self->{transport} = $transport;
96 100
97 my $transport_send = $transport->can ("send"); 101 my $transport_send = $transport->{send};
98
99 $self->{send} = sub {
100 $transport_send->($transport, $_[0]);
101 };
102 102
103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
104 104
105 $self->{send} = $transport_send;
106
105 $transport->send ($_) 107 $transport_send->($_)
106 for @{ delete $self->{queue} || [] }; 108 for @{ delete $self->{queue} || [] };
107} 109}
108 110
109sub connect { 111sub connect {
110 my ($self, @addresses) = @_; 112 my ($self) = @_;
111 113
112 return if $self->{transport}; 114 return if $self->{transport};
115 return if $self->{connect_w};
113 116
114 Scalar::Util::weaken $self; 117 Scalar::Util::weaken $self;
118 use Carp;Carp::cluck;#d#
115 119
116 $self->{connect_to} ||= AE::timer 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
117 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
118 0,
119 sub {
120 $self->transport_error (transport_error => $self->{id}, "unable to connect"); 121 $self->transport_error (transport_error => $self->{id}, "unable to connect");
122 };
123
124 # maybe @$addresses?
125 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
126
127 if ($addresses) {
128 $self->connect_to ($addresses);
129 } else {
130 # on global nodes, all bets are off now - we either know the node, or we don't
131 unless ($AnyEvent::MP::Kernel::GLOBAL) {
132 AnyEvent::MP::Kernel::g_find ($self->{id});
133 }
134 }
135}
136
137sub connect_to {
138 my ($self, $addresses) = @_;
139
140 return if $self->{transport};
141 return if $self->{connect_w};
142
143 return unless @$addresses;
144
145 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
146
147 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
148 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
149
150 $interval = ($monitor - $interval) / @$addresses
151 if ($monitor - $interval) / @$addresses < $interval;
152
153 $interval = 0.4 if $interval < 0.4;
154
155 my @endpoints = reverse @$addresses;
156
157 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
158 my $endpoint = pop @endpoints;
159
160 AE::log 9 => "connecting to $self->{id} at $endpoint";
161
162 $self->{trial}{$endpoint} ||= do {
163 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
164 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
165
166 AnyEvent::MP::Transport::mp_connect
167 $host, $port,
168 sub { delete $self->{trial}{$endpoint} },
121 }; 169 };
122
123 return unless @addresses;
124
125 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
126
127 unless ($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 } 170 };
152} 171}
153 172
154sub kill { 173sub kill {
155 my ($self, $port, @reason) = @_; 174 my ($self, $port, @reason) = @_;
156 175
157 $self->send (["", kil => $port, @reason]); 176 $self->{send} (["", kil => $port, @reason]);
158} 177}
159 178
160sub monitor { 179sub monitor {
161 my ($self, $portid, $cb) = @_; 180 my ($self, $portid, $cb) = @_;
162 181
… …
180 $self->send (["", mon0 => $portid]); 199 $self->send (["", mon0 => $portid]);
181 delete $self->{monitor}{$portid}; 200 delete $self->{monitor}{$portid};
182 } 201 }
183} 202}
184 203
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; 204package AnyEvent::MP::Node::Self; # the local node
191 205
192use base "AnyEvent::MP::Node"; 206use base "AnyEvent::MP::Node";
193 207
194sub connect { 208sub connect {
195 # we are trivially connected 209 # we are trivially connected
196} 210}
197 211
212# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY = -50;
214our @DELAY;
215our $DELAY_W;
216
217our $send_delayed = sub {
218 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
219 (shift @DELAY)->()
220 while @DELAY;
221 undef $DELAY_W;
222 $DELAY = -50;
223};
224
198sub transport_reset { 225sub transport_reset {
199 my ($self) = @_; 226 my ($self) = @_;
200 227
201 Scalar::Util::weaken $self; 228 Scalar::Util::weaken $self;
202 229
203 $self->{send} = sub { 230 $self->{send} = sub {
231 if (++$DELAY > 0) {
232 my $msg = $_[0];
233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
234 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
235 return;
236 }
237
204 local $AnyEvent::MP::Kernel::SRCNODE = $self; 238 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
205 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
206 }; 240 };
207} 241}
208 242
209sub transport_connect { 243sub transport_connect {
210 my ($self, $tp) = @_; 244 my ($self, $tp) = @_;
211 245
212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 246 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
213} 247}
214 248
215sub kill { 249sub kill {
216 my ($self, $port, @reason) = @_; 250 my (undef, @args) = @_;
217 251
218 delete $AnyEvent::MP::Kernel::PORT{$port}; 252 # we _always_ delay kil's, to avoid calling mon callbacks
219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 253 # from anything but the event loop context.
220 254 $DELAY = 1;
221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 255 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
222 or !@reason 256 $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} 257}
227 258
228sub monitor { 259sub monitor {
229 my ($self, $portid, $cb) = @_; 260 # maybe always delay, too?
230 261 if ($DELAY_W) {
231 return $cb->(no_such_port => "cannot monitor nonexistent port") 262 my @args = @_;
232 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 263 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
233 264 return;
234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 265 }
266 &AnyEvent::MP::Kernel::_monitor;
235} 267}
236 268
237sub unmonitor { 269sub unmonitor {
238 my ($self, $portid, $cb) = @_; 270 # no need to always delay
271 if ($DELAY_W) {
272 my @args = @_;
273 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
274 return;
275 }
239 276
240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 277 &AnyEvent::MP::Kernel::_unmonitor;
241} 278}
242 279
243=head1 SEE ALSO 280=head1 SEE ALSO
244 281
245L<AnyEvent::MP>. 282L<AnyEvent::MP>.

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