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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 1.64 by root, Fri Mar 23 21:16:25 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 10
11This is an internal utility module, horrible to look at, so don't.
12
11=cut 13=cut
12 14
13package AnyEvent::MP::Node; 15package AnyEvent::MP::Node; # base class for nodes
14 16
15use common::sense; 17use common::sense;
16 18
17use AE ();
18use AnyEvent::Util (); 19use AnyEvent ();
19use AnyEvent::Socket (); 20use AnyEvent::Socket ();
20 21
21use AnyEvent::MP::Transport (); 22use AnyEvent::MP::Transport ();
22 23
23sub new { 24sub new {
… …
38sub send { 39sub send {
39 &{ shift->{send} } 40 &{ shift->{send} }
40} 41}
41 42
42# nodes reachable via the network 43# nodes reachable via the network
43package AnyEvent::MP::Node::External; 44package AnyEvent::MP::Node::Remote; # a remote node
44 45
45use base "AnyEvent::MP::Node"; 46use base "AnyEvent::MP::Node";
46 47
47# called at init time, mostly sets {send} 48# called at init time, mostly sets {send}
48sub transport_reset { 49sub transport_reset {
… …
56 push @{$self->{queue}}, shift; 57 push @{$self->{queue}}, shift;
57 $self->connect; 58 $self->connect;
58 }; 59 };
59} 60}
60 61
61# called only after successful handshake 62# called each time we fail to establish a connection,
63# or the existing connection failed
62sub transport_error { 64sub transport_error {
63 my ($self, @reason) = @_; 65 my ($self, @reason) = @_;
64 66
65 my $no_transport = !$self->{transport}; 67 my $no_transport = !$self->{transport};
66 68
… …
74 $_->(@reason) for map @$_, values %$mon; 76 $_->(@reason) for map @$_, values %$mon;
75 } 77 }
76 78
77 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
78 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} || $self->{connect_to};
79} 85}
80 86
81# called after handshake was successful 87# called after handshake was successful
82sub transport_connect { 88sub transport_connect {
83 my ($self, $transport) = @_; 89 my ($self, $transport) = @_;
84 90
85 delete $self->{trial}; 91 delete $self->{trial};
86 92
87 $self->transport_error (transport_error => "switched connections") 93 $self->transport_error (transport_error => $self->{id}, "switched connections")
88 if $self->{transport}; 94 if $self->{transport};
89 95
90 delete $self->{connect_w}; 96 delete $self->{connect_w};
91 delete $self->{connect_to}; 97 delete $self->{connect_to};
92 98
93 $self->{transport} = $transport; 99 $self->{transport} = $transport;
94 100
95 my $transport_send = $transport->can ("send"); 101 my $transport_send = $transport->{send};
96
97 $self->{send} = sub {
98 $transport_send->($transport, $_[0]);
99 };
100 102
101 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
102 104
105 $self->{send} = $transport_send;
106
103 $transport->send ($_) 107 $transport_send->($_)
104 for @{ delete $self->{queue} || [] }; 108 for @{ delete $self->{queue} || [] };
105} 109}
106 110
107sub connect { 111sub connect {
108 my ($self, @addresses) = @_; 112 my ($self) = @_;
109 113
110 return if $self->{transport}; 114 return if $self->{transport};
115 return if $self->{connect_w};
111 116
112 Scalar::Util::weaken $self; 117 Scalar::Util::weaken $self;
118 use Carp;Carp::cluck;#d#
113 119
114 $self->{connect_to} ||= AE::timer 120 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 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"); 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} },
119 }; 169 };
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 } 170 };
150} 171}
151 172
152sub kill { 173sub kill {
153 my ($self, $port, @reason) = @_; 174 my ($self, $port, @reason) = @_;
154 175
155 $self->send (["", kil => $port, @reason]); 176 $self->{send} (["", kil => $port, @reason]);
156} 177}
157 178
158sub monitor { 179sub monitor {
159 my ($self, $portid, $cb) = @_; 180 my ($self, $portid, $cb) = @_;
160 181
… …
178 $self->send (["", mon0 => $portid]); 199 $self->send (["", mon0 => $portid]);
179 delete $self->{monitor}{$portid}; 200 delete $self->{monitor}{$portid};
180 } 201 }
181} 202}
182 203
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; 204package AnyEvent::MP::Node::Self; # the local node
189 205
190use base "AnyEvent::MP::Node"; 206use base "AnyEvent::MP::Node";
191 207
192sub connect { 208sub connect {
193 # we are trivially connected 209 # we are trivially connected
194} 210}
195 211
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 $DELAY = -50;
223};
224
196sub transport_reset { 225sub transport_reset {
197 my ($self) = @_; 226 my ($self) = @_;
198 227
199 Scalar::Util::weaken $self; 228 Scalar::Util::weaken $self;
200 229
201 $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
202 local $AnyEvent::MP::Kernel::SRCNODE = $self; 238 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
203 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204 }; 240 };
205} 241}
206 242
207sub transport_connect { 243sub transport_connect {
208 my ($self, $tp) = @_; 244 my ($self, $tp) = @_;
209 245
210 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 246 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
211} 247}
212 248
213sub kill { 249sub kill {
214 my ($self, $port, @reason) = @_; 250 my (undef, @args) = @_;
215 251
216 delete $AnyEvent::MP::Kernel::PORT{$port}; 252 # we _always_ delay kil's, to avoid calling mon callbacks
217 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 253 # from anything but the event loop context.
218 254 $DELAY = 1;
219 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 255 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
220 or !@reason 256 $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} 257}
225 258
226sub monitor { 259sub monitor {
227 my ($self, $portid, $cb) = @_; 260 # maybe always delay, too?
228 261 if ($DELAY_W) {
229 return $cb->(no_such_port => "cannot monitor nonexistent port") 262 my @args = @_;
230 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 263 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
231 264 return;
232 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 265 }
266 &AnyEvent::MP::Kernel::_monitor;
233} 267}
234 268
235sub unmonitor { 269sub unmonitor {
236 my ($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 }
237 276
238 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 277 &AnyEvent::MP::Kernel::_unmonitor;
239} 278}
240 279
241=head1 SEE ALSO 280=head1 SEE ALSO
242 281
243L<AnyEvent::MP>. 282L<AnyEvent::MP>.

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