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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.22 by root, Thu Aug 13 22:50:47 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
… …
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23sub new { 25sub new {
24 my ($self, $noderef) = @_; 26 my ($self, $id) = @_;
25 27
26 $self = bless { noderef => $noderef }, $self; 28 $self = bless { id => $id }, $self;
27 29
30 $self->init;
28 $self->transport_reset; 31 $self->transport_reset;
29 32
30 $self 33 $self
34}
35
36sub init {
37 #
31} 38}
32 39
33sub send { 40sub send {
34 &{ shift->{send} } 41 &{ shift->{send} }
35} 42}
36 43
44# nodes reachable via the network
37package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::Remote;
38 46
39use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
40 48
41# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
42sub transport_reset { 50sub transport_reset {
… …
50 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
51 $self->connect; 59 $self->connect;
52 }; 60 };
53} 61}
54 62
55# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
56sub transport_error { 65sub transport_error {
57 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
58 67
59 my $no_transport = !$self->{transport}; 68 my $no_transport = !$self->{transport};
60 69
… …
62 delete $self->{connect_to}; 71 delete $self->{connect_to};
63 72
64 delete $self->{queue}; 73 delete $self->{queue};
65 $self->transport_reset; 74 $self->transport_reset;
66 75
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
78 }
79
67 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
68 unless $no_transport; 81 unless $no_transport;
69 82
70 if (my $mon = delete $self->{lmon}) { 83 # if we are here and are idle, we nuke ourselves
71 $_->(@reason) for map @$_, values %$mon; 84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
72 } 85 unless $self->{transport} || $self->{connect_to};
73} 86}
74 87
75# called after handshake was successful 88# called after handshake was successful
76sub transport_connect { 89sub transport_connect {
77 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
78 91
92 delete $self->{trial};
93
79 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
80 if $self->{transport}; 95 if $self->{transport};
81 96
97 delete $self->{connect_addr};
82 delete $self->{connect_w}; 98 delete $self->{connect_w};
83 delete $self->{connect_to}; 99 delete $self->{connect_to};
84 100
85 $self->{transport} = $transport; 101 $self->{transport} = $transport;
86 102
87 my $transport_send = $transport->can ("send"); 103 my $transport_send = $transport->{send};
88
89 $self->{send} = sub {
90 $transport_send->($transport, $_[0]);
91 };
92 104
93 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
94 106
107 $self->{send} = $transport_send;
108
95 $transport->send ($_) 109 $transport_send->($_)
96 for @{ delete $self->{queue} || [] }; 110 for @{ delete $self->{queue} || [] };
97} 111}
98 112
99sub connect { 113sub connect {
100 my ($self) = @_; 114 my ($self) = @_;
101 115
116 return if $self->{transport};
117 return if $self->{connect_w};
118
102 Scalar::Util::weaken $self; 119 Scalar::Util::weaken $self;
103 120
121 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
122
104 $self->{connect_to} ||= AE::timer 123 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
105 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
106 0,
107 sub {
108 $self->transport_error (transport_error => $self->{noderef}, "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} },
109 }; 166 };
110
111 unless ($self->{connect_w}) {
112 my @endpoints;
113 my %trial;
114
115 $self->{connect_w} = AE::timer
116 0,
117 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
118 sub {
119 @endpoints = split /,/, $self->{noderef}
120 unless @endpoints;
121
122 my $endpoint = shift @endpoints;
123
124 $trial{$endpoint} ||= do {
125 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
126 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
127
128 AnyEvent::MP::Transport::mp_connect
129 $host, $port,
130 sub { delete $trial{$endpoint} }
131 ;
132 };
133 }
134 ;
135 } 167 };
136} 168}
137 169
138sub kill { 170sub kill {
139 my ($self, $port, @reason) = @_; 171 my ($self, $port, @reason) = @_;
140 172
141 $self->send (["", kil => $port, @reason]); 173 $self->{send} (["", kil => $port, @reason]);
142} 174}
143 175
144sub monitor { 176sub monitor {
145 my ($self, $portid, $cb) = @_; 177 my ($self, $portid, $cb) = @_;
146 178
147 my $list = $self->{lmon}{$portid} ||= []; 179 my $list = $self->{lmon}{$portid} ||= [];
148 180
149 $self->send (["", mon1 => $portid]) 181 $self->send (["", mon1 => $portid])
150 unless @$list; 182 unless @$list || !length $portid;
151 183
152 push @$list, $cb; 184 push @$list, $cb;
153} 185}
154 186
155sub unmonitor { 187sub unmonitor {
… …
164 $self->send (["", mon0 => $portid]); 196 $self->send (["", mon0 => $portid]);
165 delete $self->{monitor}{$portid}; 197 delete $self->{monitor}{$portid};
166 } 198 }
167} 199}
168 200
169package AnyEvent::MP::Node::Direct; 201package AnyEvent::MP::Node::Self;
170 202
171use base "AnyEvent::MP::Node::External";
172
173package AnyEvent::MP::Node::Indirect;
174
175use base "AnyEvent::MP::Node::Direct"; 203use base "AnyEvent::MP::Node";
204
205sub connect {
206 # we are trivially connected
207}
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 $DELAY = -50;
220}
176 221
177sub transport_reset { 222sub transport_reset {
178 my ($self) = @_; 223 my ($self) = @_;
179 224
180 # as an optimisation, immediately nuke slave nodes
181 delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}}
182 if $self->{transport};
183
184 $self->SUPER::transport_reset;
185}
186
187sub connect {
188 my ($self) = @_;
189
190 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
191}
192
193package AnyEvent::MP::Node::Self;
194
195use base "AnyEvent::MP::Node";
196
197sub connect {
198 # we are trivially connected
199}
200
201sub transport_reset {
202 my ($self) = @_;
203
204 Scalar::Util::weaken $self; 225 Scalar::Util::weaken $self;
205 226
206 $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
207 local $AnyEvent::MP::Kernel::SRCNODE = $self; 235 local $AnyEvent::MP::Kernel::SRCNODE = $self;
208 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 236 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
209 }; 237 };
210} 238}
211 239
240sub transport_connect {
241 my ($self, $tp) = @_;
242
243 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
244}
245
212sub kill { 246sub kill {
213 my ($self, $port, @reason) = @_; 247 my (undef, @args) = @_;
214 248
215 delete $AnyEvent::MP::Kernel::PORT{$port}; 249 # we _always_ delay kil's, to avoid calling mon callbacks
216 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 250 # from anything but the event loop context.
217 251 $DELAY = 1;
218 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 252 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
219 or !@reason 253 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
220 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
221
222 $_->(@reason) for values %$mon;
223} 254}
224 255
225sub monitor { 256sub monitor {
226 my ($self, $portid, $cb) = @_; 257 # maybe always delay, too?
227 258 if ($DELAY_W) {
228 return $cb->(no_such_port => "cannot monitor nonexistent port") 259 my @args = @_;
229 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 260 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
230 261 return;
231 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 262 }
263 &AnyEvent::MP::Kernel::_monitor;
232} 264}
233 265
234sub unmonitor { 266sub unmonitor {
235 my ($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 }
236 273
237 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 274 &AnyEvent::MP::Kernel::_unmonitor;
238} 275}
239 276
240=head1 SEE ALSO 277=head1 SEE ALSO
241 278
242L<AnyEvent::MP>. 279L<AnyEvent::MP>.

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