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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.29 by root, Fri Aug 28 00:31:14 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
… …
33 35
34sub init { 36sub init {
35 # 37 #
36} 38}
37 39
40#d# only needed for bad global code at the moment
41sub transport_error {
42}
43
38sub send { 44sub send {
39 &{ shift->{send} } 45 &{ shift->{send} }
40} 46}
41 47
42# nodes reachable via the network 48# nodes reachable via the network
43package AnyEvent::MP::Node::External; 49package AnyEvent::MP::Node::Remote;
44 50
45use base "AnyEvent::MP::Node"; 51use base "AnyEvent::MP::Node";
46 52
47# called at init time, mostly sets {send} 53# called at init time, mostly sets {send}
48sub transport_reset { 54sub transport_reset {
… …
54 60
55 $self->{send} = sub { 61 $self->{send} = sub {
56 push @{$self->{queue}}, shift; 62 push @{$self->{queue}}, shift;
57 $self->connect; 63 $self->connect;
58 }; 64 };
59
60 $self->connect
61 if $self->{autoconnect};
62} 65}
63 66
64# called only after successful handshake 67# called each time we fail to establish a connection,
68# or the existing connection failed
65sub transport_error { 69sub transport_error {
66 my ($self, @reason) = @_; 70 my ($self, @reason) = @_;
67 71
68 my $no_transport = !$self->{transport}; 72 my $no_transport = !$self->{transport};
69 73
… …
71 delete $self->{connect_to}; 75 delete $self->{connect_to};
72 76
73 delete $self->{queue}; 77 delete $self->{queue};
74 $self->transport_reset; 78 $self->transport_reset;
75 79
80 if (my $mon = delete $self->{lmon}) {
81 $_->(@reason) for map @$_, values %$mon;
82 }
83
76 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 84 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
77 unless $no_transport; 85 unless $no_transport;
78 86
79 if (my $mon = delete $self->{lmon}) { 87 # if we are here and are idle, we nuke ourselves
80 $_->(@reason) for map @$_, values %$mon; 88 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
81 } 89 unless $self->{transport} || $self->{connect_to};
82} 90}
83 91
84# called after handshake was successful 92# called after handshake was successful
85sub transport_connect { 93sub transport_connect {
86 my ($self, $transport) = @_; 94 my ($self, $transport) = @_;
87 95
88 delete $self->{trial}; 96 delete $self->{trial};
89 97
90 $self->transport_error (transport_error => "switched connections") 98 $self->transport_error (transport_error => $self->{id}, "switched connections")
91 if $self->{transport}; 99 if $self->{transport};
92 100
101 delete $self->{connect_addr};
93 delete $self->{connect_w}; 102 delete $self->{connect_w};
94 delete $self->{connect_to}; 103 delete $self->{connect_to};
95 104
96 $self->{transport} = $transport; 105 $self->{transport} = $transport;
97 106
98 my $transport_send = $transport->can ("send"); 107 my $transport_send = $transport->{send};
99
100 $self->{send} = sub {
101 $transport_send->($transport, $_[0]);
102 };
103 108
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105 110
111 $self->{send} = $transport_send;
112
106 $transport->send ($_) 113 $transport_send->($_)
107 for @{ delete $self->{queue} || [] }; 114 for @{ delete $self->{queue} || [] };
108} 115}
109 116
110sub connect { 117sub connect {
111 my ($self, @addresses) = @_; 118 my ($self) = @_;
112 119
113 return if $self->{transport}; 120 return if $self->{transport};
121 return if $self->{connect_w};
114 122
115 Scalar::Util::weaken $self; 123 Scalar::Util::weaken $self;
116 124
125 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
126
117 $self->{connect_to} ||= AE::timer 127 $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"); 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} },
122 }; 170 };
123
124 return unless @addresses;
125
126 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
127
128 unless ($self->{connect_w}) {
129 my @endpoints;
130
131 $self->{connect_w} = AE::timer
132 rand,
133 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
134 sub {
135 @endpoints = @addresses
136 unless @endpoints;
137
138 my $endpoint = shift @endpoints;
139
140 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
141
142 $self->{trial}{$endpoint} ||= do {
143 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
144 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
145
146 AnyEvent::MP::Transport::mp_connect
147 $host, $port,
148 sub { delete $self->{trial}{$endpoint} },
149 };
150 }
151 ;
152 } 171 };
153} 172}
154 173
155sub kill { 174sub kill {
156 my ($self, $port, @reason) = @_; 175 my ($self, $port, @reason) = @_;
157 176
158 $self->send (["", kil => $port, @reason]); 177 $self->{send} (["", kil => $port, @reason]);
159} 178}
160 179
161sub monitor { 180sub monitor {
162 my ($self, $portid, $cb) = @_; 181 my ($self, $portid, $cb) = @_;
163 182
… …
181 $self->send (["", mon0 => $portid]); 200 $self->send (["", mon0 => $portid]);
182 delete $self->{monitor}{$portid}; 201 delete $self->{monitor}{$portid};
183 } 202 }
184} 203}
185 204
186# used for direct slave connections as well
187package AnyEvent::MP::Node::Direct;
188
189use base "AnyEvent::MP::Node::External";
190
191package AnyEvent::MP::Node::Self; 205package AnyEvent::MP::Node::Self;
192 206
193use base "AnyEvent::MP::Node"; 207use base "AnyEvent::MP::Node";
194 208
195sub connect { 209sub connect {
196 # we are trivially connected 210 # we are trivially connected
197} 211}
198 212
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 $DELAY = -50;
224}
225
199sub transport_reset { 226sub transport_reset {
200 my ($self) = @_; 227 my ($self) = @_;
201 228
202 Scalar::Util::weaken $self; 229 Scalar::Util::weaken $self;
203 230
204 $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
205 local $AnyEvent::MP::Kernel::SRCNODE = $self; 239 local $AnyEvent::MP::Kernel::SRCNODE = $self;
206 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 240 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
207 }; 241 };
208} 242}
209 243
… …
212 246
213 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 247 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
214} 248}
215 249
216sub kill { 250sub kill {
217 my ($self, $port, @reason) = @_; 251 my (undef, @args) = @_;
218 252
219 delete $AnyEvent::MP::Kernel::PORT{$port}; 253 # we _always_ delay kil's, to avoid calling mon callbacks
220 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 254 # from anything but the event loop context.
221 255 $DELAY = 1;
222 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 256 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
223 or !@reason 257 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
224 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
225
226 $_->(@reason) for values %$mon;
227} 258}
228 259
229sub monitor { 260sub monitor {
230 my ($self, $portid, $cb) = @_; 261 # maybe always delay, too?
231 262 if ($DELAY_W) {
232 return $cb->(no_such_port => "cannot monitor nonexistent port") 263 my @args = @_;
233 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 264 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
234 265 return;
235 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 266 }
267 &AnyEvent::MP::Kernel::_monitor;
236} 268}
237 269
238sub unmonitor { 270sub unmonitor {
239 my ($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 }
240 277
241 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 278 &AnyEvent::MP::Kernel::_unmonitor;
242} 279}
243 280
244=head1 SEE ALSO 281=head1 SEE ALSO
245 282
246L<AnyEvent::MP>. 283L<AnyEvent::MP>.

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