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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.30 by root, Fri Aug 28 20:57:42 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 {
… …
56 push @{$self->{queue}}, shift; 62 push @{$self->{queue}}, shift;
57 $self->connect; 63 $self->connect;
58 }; 64 };
59} 65}
60 66
61# called only after successful handshake 67# called each time we fail to establish a connection,
68# or the existing connection failed
62sub transport_error { 69sub transport_error {
63 my ($self, @reason) = @_; 70 my ($self, @reason) = @_;
64 71
65 my $no_transport = !$self->{transport}; 72 my $no_transport = !$self->{transport};
66 73
… …
74 $_->(@reason) for map @$_, values %$mon; 81 $_->(@reason) for map @$_, values %$mon;
75 } 82 }
76 83
77 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 84 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
78 unless $no_transport; 85 unless $no_transport;
86
87 # if we are here and are idle, we nuke ourselves
88 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
89 unless $self->{transport} || $self->{connect_to};
79} 90}
80 91
81# called after handshake was successful 92# called after handshake was successful
82sub transport_connect { 93sub transport_connect {
83 my ($self, $transport) = @_; 94 my ($self, $transport) = @_;
84 95
85 delete $self->{trial}; 96 delete $self->{trial};
86 97
87 $self->transport_error (transport_error => "switched connections") 98 $self->transport_error (transport_error => $self->{id}, "switched connections")
88 if $self->{transport}; 99 if $self->{transport};
89 100
101 delete $self->{connect_addr};
90 delete $self->{connect_w}; 102 delete $self->{connect_w};
91 delete $self->{connect_to}; 103 delete $self->{connect_to};
92 104
93 $self->{transport} = $transport; 105 $self->{transport} = $transport;
94 106
95 my $transport_send = $transport->can ("send"); 107 my $transport_send = $transport->{send};
96
97 $self->{send} = sub {
98 $transport_send->($transport, $_[0]);
99 };
100 108
101 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
102 110
111 $self->{send} = $transport_send;
112
103 $transport->send ($_) 113 $transport_send->($_)
104 for @{ delete $self->{queue} || [] }; 114 for @{ delete $self->{queue} || [] };
105} 115}
106 116
107sub connect { 117sub connect {
108 my ($self, @addresses) = @_; 118 my ($self) = @_;
109 119
110 return if $self->{transport}; 120 return if $self->{transport};
121 return if $self->{connect_w};
111 122
112 Scalar::Util::weaken $self; 123 Scalar::Util::weaken $self;
113 124
125 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
126
114 $self->{connect_to} ||= AE::timer 127 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
115 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
116 0,
117 sub {
118 $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} },
119 }; 170 };
120
121 return unless @addresses;
122
123 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
124
125 unless ($self->{connect_w}) {
126 my @endpoints;
127
128 $self->{connect_w} = AE::timer
129 rand,
130 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
131 sub {
132 @endpoints = @addresses
133 unless @endpoints;
134
135 my $endpoint = shift @endpoints;
136
137 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
138
139 $self->{trial}{$endpoint} ||= do {
140 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
141 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
142
143 AnyEvent::MP::Transport::mp_connect
144 $host, $port,
145 sub { delete $self->{trial}{$endpoint} },
146 };
147 }
148 ;
149 } 171 };
150} 172}
151 173
152sub kill { 174sub kill {
153 my ($self, $port, @reason) = @_; 175 my ($self, $port, @reason) = @_;
154 176
155 $self->send (["", kil => $port, @reason]); 177 $self->{send} (["", kil => $port, @reason]);
156} 178}
157 179
158sub monitor { 180sub monitor {
159 my ($self, $portid, $cb) = @_; 181 my ($self, $portid, $cb) = @_;
160 182
… …
178 $self->send (["", mon0 => $portid]); 200 $self->send (["", mon0 => $portid]);
179 delete $self->{monitor}{$portid}; 201 delete $self->{monitor}{$portid};
180 } 202 }
181} 203}
182 204
183# used for direct slave connections as well
184package AnyEvent::MP::Node::Direct;
185
186use base "AnyEvent::MP::Node::External";
187
188package AnyEvent::MP::Node::Self; 205package AnyEvent::MP::Node::Self;
189 206
190use base "AnyEvent::MP::Node"; 207use base "AnyEvent::MP::Node";
191 208
192sub connect { 209sub connect {
193 # we are trivially connected 210 # we are trivially connected
194} 211}
195 212
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 $DELAY = -50;
224}
225
196sub transport_reset { 226sub transport_reset {
197 my ($self) = @_; 227 my ($self) = @_;
198 228
199 Scalar::Util::weaken $self; 229 Scalar::Util::weaken $self;
200 230
201 $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
202 local $AnyEvent::MP::Kernel::SRCNODE = $self; 239 local $AnyEvent::MP::Kernel::SRCNODE = $self;
203 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 240 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204 }; 241 };
205} 242}
206 243
… …
209 246
210 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 247 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
211} 248}
212 249
213sub kill { 250sub kill {
214 my ($self, $port, @reason) = @_; 251 my (undef, @args) = @_;
215 252
216 delete $AnyEvent::MP::Kernel::PORT{$port}; 253 # we _always_ delay kil's, to avoid calling mon callbacks
217 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 254 # from anything but the event loop context.
218 255 $DELAY = 1;
219 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 256 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
220 or !@reason 257 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
221 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
222
223 $_->(@reason) for values %$mon;
224} 258}
225 259
226sub monitor { 260sub monitor {
227 my ($self, $portid, $cb) = @_; 261 # maybe always delay, too?
228 262 if ($DELAY_W) {
229 return $cb->(no_such_port => "cannot monitor nonexistent port") 263 my @args = @_;
230 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 264 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
231 265 return;
232 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 266 }
267 &AnyEvent::MP::Kernel::_monitor;
233} 268}
234 269
235sub unmonitor { 270sub unmonitor {
236 my ($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 }
237 277
238 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 278 &AnyEvent::MP::Kernel::_unmonitor;
239} 279}
240 280
241=head1 SEE ALSO 281=head1 SEE ALSO
242 282
243L<AnyEvent::MP>. 283L<AnyEvent::MP>.

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