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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.19 by root, Wed Aug 12 22:03:15 2009 UTC vs.
Revision 1.40 by root, Tue Sep 8 20:56:05 2009 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 $self
34}
35
36sub init {
37 #
31} 38}
32 39
33sub send { 40sub send {
34 &{ shift->{send} } 41 &{ shift->{send} }
35} 42}
36 43
44# nodes reachable via the network
37package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::External;
38 46
39use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
40 48
41# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
… …
50 push @{$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) = @_;
67
68 my $no_transport = !$self->{transport};
69
70 delete $self->{connect_w};
71 delete $self->{connect_to};
58 72
59 delete $self->{queue}; 73 delete $self->{queue};
60 $self->transport_reset; 74 $self->transport_reset;
61 75
62 if (my $mon = delete $self->{lmon}) { 76 if (my $mon = delete $self->{lmon}) {
63 $_->(@reason) for map @$_, values %$mon; 77 $_->(@reason) for map @$_, values %$mon;
64 } 78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
81 unless $no_transport;
82
83 # if we are here and are idle, we nuke ourselves
84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
85 unless $self->{transport} || $self->{connect_to};
65} 86}
66 87
67# called after handshake was successful 88# called after handshake was successful
68sub transport_connect { 89sub transport_connect {
69 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
70 91
71 $self->transport_reset 92 delete $self->{trial};
93
94 $self->transport_error (transport_error => "switched connections")
72 if $self->{transport}; 95 if $self->{transport};
73 96
74 delete $self->{connect_w}; 97 delete $self->{connect_w};
75 delete $self->{connect_to}; 98 delete $self->{connect_to};
76 99
… …
80 103
81 $self->{send} = sub { 104 $self->{send} = sub {
82 $transport_send->($transport, $_[0]); 105 $transport_send->($transport, $_[0]);
83 }; 106 };
84 107
108 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
109
85 $transport->send ($_) 110 $transport->send ($_)
86 for @{ delete $self->{queue} || [] }; 111 for @{ delete $self->{queue} || [] };
87} 112}
88 113
89sub connect { 114sub connect {
90 my ($self) = @_; 115 my ($self, @addresses) = @_;
116
117 return if $self->{transport};
91 118
92 Scalar::Util::weaken $self; 119 Scalar::Util::weaken $self;
93 120
121 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
122
94 $self->{connect_to} ||= AE::timer 123 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
95 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
96 0,
97 sub {
98 $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); 124 $self->transport_error (transport_error => $self->{id}, "unable to connect");
125 };
126
127 return unless @addresses;
128 return if $self->{connect_w};
129
130 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
131
132 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
133
134 $interval = ($monitor - $interval) / @addresses
135 if ($monitor - $interval) / @addresses < $interval;
136
137 $interval = 0.4 if $interval < 0.4;
138
139 my @endpoints;
140
141 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
142 @endpoints = @addresses
143 unless @endpoints;
144
145 my $endpoint = shift @endpoints;
146
147 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
148
149 $self->{trial}{$endpoint} ||= do {
150 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
151 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
152
153 AnyEvent::MP::Transport::mp_connect
154 $host, $port,
155 sub { delete $self->{trial}{$endpoint} },
99 }; 156 };
100
101 unless ($self->{connect_w}) {
102 my @endpoints;
103 my %trial;
104
105 $self->{connect_w} = AE::timer
106 0,
107 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
108 sub {
109 @endpoints = split /,/, $self->{noderef}
110 unless @endpoints;
111
112 my $endpoint = shift @endpoints;
113
114 $trial{$endpoint} ||= do {
115 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
116 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
117
118 AnyEvent::MP::Transport::mp_connect
119 $host, $port,
120 sub { delete $trial{$endpoint} }
121 ;
122 };
123 }
124 ;
125 } 157 };
126} 158}
127 159
128sub kill { 160sub kill {
129 my ($self, $port, @reason) = @_; 161 my ($self, $port, @reason) = @_;
130 162
… …
135 my ($self, $portid, $cb) = @_; 167 my ($self, $portid, $cb) = @_;
136 168
137 my $list = $self->{lmon}{$portid} ||= []; 169 my $list = $self->{lmon}{$portid} ||= [];
138 170
139 $self->send (["", mon1 => $portid]) 171 $self->send (["", mon1 => $portid])
140 unless @$list; 172 unless @$list || !length $portid;
141 173
142 push @$list, $cb; 174 push @$list, $cb;
143} 175}
144 176
145sub unmonitor { 177sub unmonitor {
… …
154 $self->send (["", mon0 => $portid]); 186 $self->send (["", mon0 => $portid]);
155 delete $self->{monitor}{$portid}; 187 delete $self->{monitor}{$portid};
156 } 188 }
157} 189}
158 190
191# used for direct slave connections as well
159package AnyEvent::MP::Node::Direct; 192package AnyEvent::MP::Node::Direct;
160 193
161use base "AnyEvent::MP::Node::External"; 194use base "AnyEvent::MP::Node::External";
162 195
163package AnyEvent::MP::Node::Indirect; 196package AnyEvent::MP::Node::Self;
164 197
165use base "AnyEvent::MP::Node::Direct"; 198use base "AnyEvent::MP::Node";
166 199
167sub connect { 200sub connect {
168 my ($self) = @_; 201 # we are trivially connected
169
170 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
171} 202}
172 203
173package AnyEvent::MP::Node::Self; 204# delay every so often to avoid recursion, also used to delay after spawn
205our $DELAY;
206our @DELAY;
207our $DELAY_W;
174 208
175use base "AnyEvent::MP::Node"; 209sub _send_delayed {
210 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
211 (shift @DELAY)->()
212 while @DELAY;
213 undef $DELAY_W;
214 $DELAY = -50;
215}
176 216
177sub transport_reset { 217sub transport_reset {
178 my ($self) = @_; 218 my ($self) = @_;
179 219
180 Scalar::Util::weaken $self; 220 Scalar::Util::weaken $self;
181 221
182 $self->{send} = sub { 222 $self->{send} = sub {
223 if ($DELAY++ >= 0) {
224 my $msg = $_[0];
225 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
226 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
227 return;
228 }
229
183 local $AnyEvent::MP::Kernel::SRCNODE = $self; 230 local $AnyEvent::MP::Kernel::SRCNODE = $self;
184 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 231 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
185 }; 232 };
186} 233}
187 234
235sub transport_connect {
236 my ($self, $tp) = @_;
237
238 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
239}
240
188sub kill { 241sub kill {
189 my ($self, $port, @reason) = @_; 242 my ($self, $port, @reason) = @_;
190 243
244 my $delay_cb = sub {
191 delete $AnyEvent::MP::Kernel::PORT{$port}; 245 delete $AnyEvent::MP::Kernel::PORT{$port};
192 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 246 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
193 247
194 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 248 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
195 or !@reason 249 or !@reason
196 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason"); 250 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
197 251
198 $_->(@reason) for values %$mon; 252 $_->(@reason) for values %$mon;
253 };
254
255 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
199} 256}
200 257
201sub monitor { 258sub monitor {
202 my ($self, $portid, $cb) = @_; 259 my ($self, $portid, $cb) = @_;
203 260
261 my $delay_cb = sub {
204 return $cb->(no_such_port => "cannot monitor nonexistent port") 262 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid")
205 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 263 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
206 264
207 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 265 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
266 };
267
268 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
208} 269}
209 270
210sub unmonitor { 271sub unmonitor {
211 my ($self, $portid, $cb) = @_; 272 my ($self, $portid, $cb) = @_;
212 273
274 my $delay_cb = sub {
213 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 275 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
276 };
277
278 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
214} 279}
215 280
216=head1 SEE ALSO 281=head1 SEE ALSO
217 282
218L<AnyEvent::MP>. 283L<AnyEvent::MP>.

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