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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.18 by root, Wed Aug 12 21:39:59 2009 UTC vs.
Revision 1.56 by root, Thu Mar 1 18:11:56 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 $self
31} 34}
32 35
36sub init {
37 #
38}
39
40#d# only needed for bad global code at the moment
41sub transport_error {
42}
43
33sub send { 44sub send {
34 &{$_[0]->{send}} 45 &{ shift->{send} }
35} 46}
36 47
48# nodes reachable via the network
37package AnyEvent::MP::Node::External; 49package AnyEvent::MP::Node::Remote;
38 50
39use base "AnyEvent::MP::Node"; 51use base "AnyEvent::MP::Node";
40 52
41# called at init time, mostly sets {send} 53# called at init time, mostly sets {send}
42sub transport_reset { 54sub transport_reset {
43 my ($self) = @_; 55 my ($self) = @_;
44 56
45 delete $self->{transport}; 57 delete $self->{transport};
46 58
59 Scalar::Util::weaken $self;
60
47 $self->{send} = sub { 61 $self->{send} = sub {
48 push @{$_[0]{queue}}, $_[1]; 62 push @{$self->{queue}}, shift;
49 $_[0]->connect; 63 $self->connect;
50 }; 64 };
51} 65}
52 66
53# called only after successful handshake 67# called each time we fail to establish a connection,
68# or the existing connection failed
54sub transport_error { 69sub transport_error {
55 my ($self, @reason) = @_; 70 my ($self, @reason) = @_;
56 71
72 my $no_transport = !$self->{transport};
73
74 delete $self->{connect_w};
75 delete $self->{connect_to};
76
57 delete $self->{queue}; 77 delete $self->{queue};
58 $self->transport_reset; 78 $self->transport_reset;
59 79
60 if (my $mon = delete $self->{lmon}) { 80 if (my $mon = delete $self->{lmon}) {
61 $_->(@reason) for map @$_, values %$mon; 81 $_->(@reason) for map @$_, values %$mon;
62 } 82 }
83
84 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
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} || $self->{connect_to};
63} 90}
64 91
65# called after handshake was successful 92# called after handshake was successful
66sub transport_connect { 93sub transport_connect {
67 my ($self, $transport) = @_; 94 my ($self, $transport) = @_;
68 95
69 $self->transport_reset 96 delete $self->{trial};
97
98 $self->transport_error (transport_error => $self->{id}, "switched connections")
70 if $self->{transport}; 99 if $self->{transport};
71 100
101 delete $self->{connect_addr};
72 delete $self->{connect_w}; 102 delete $self->{connect_w};
73 delete $self->{connect_to}; 103 delete $self->{connect_to};
74 104
75 $self->{transport} = $transport; 105 $self->{transport} = $transport;
76 106
77 $self->{send} = sub { 107 my $transport_send = $transport->{send};
78 $transport->send ($_[1]);
79 };
80 108
109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
110
111 $self->{send} = $transport_send;
112
81 $transport->send ($_) 113 $transport_send->($_)
82 for @{ delete $self->{queue} || [] }; 114 for @{ delete $self->{queue} || [] };
83} 115}
84 116
85sub connect { 117sub connect {
86 my ($self) = @_; 118 my ($self) = @_;
87 119
120 return if $self->{transport};
121 return if $self->{connect_w};
122
88 Scalar::Util::weaken $self; 123 Scalar::Util::weaken $self;
89 124
125 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
126
90 $self->{connect_to} ||= AE::timer 127 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
91 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
92 0,
93 sub {
94 $self->transport_error (transport_error => $self->{noderef}, "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 $self->{connect_w} = AnyEvent::MP::Kernel::global_req (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} },
95 }; 170 };
96
97 unless ($self->{connect_w}) {
98 my @endpoints;
99 my %trial;
100
101 $self->{connect_w} = AE::timer
102 0,
103 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
104 sub {
105 @endpoints = split /,/, $self->{noderef}
106 unless @endpoints;
107
108 my $endpoint = shift @endpoints;
109
110 $trial{$endpoint} ||= do {
111 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
112 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
113
114 AnyEvent::MP::Transport::mp_connect
115 $host, $port,
116 sub { delete $trial{$endpoint} }
117 ;
118 };
119 }
120 ;
121 } 171 };
122} 172}
123 173
124sub kill { 174sub kill {
125 my ($self, $port, @reason) = @_; 175 my ($self, $port, @reason) = @_;
126 176
127 $self->send (["", kil => $port, @reason]); 177 $self->{send} (["", kil => $port, @reason]);
128} 178}
129 179
130sub monitor { 180sub monitor {
131 my ($self, $portid, $cb) = @_; 181 my ($self, $portid, $cb) = @_;
132 182
133 my $list = $self->{lmon}{$portid} ||= []; 183 my $list = $self->{lmon}{$portid} ||= [];
134 184
135 $self->send (["", mon1 => $portid]) 185 $self->send (["", mon1 => $portid])
136 unless @$list; 186 unless @$list || !length $portid;
137 187
138 push @$list, $cb; 188 push @$list, $cb;
139} 189}
140 190
141sub unmonitor { 191sub unmonitor {
… …
150 $self->send (["", mon0 => $portid]); 200 $self->send (["", mon0 => $portid]);
151 delete $self->{monitor}{$portid}; 201 delete $self->{monitor}{$portid};
152 } 202 }
153} 203}
154 204
155package AnyEvent::MP::Node::Direct; 205package AnyEvent::MP::Node::Self;
156 206
157use base "AnyEvent::MP::Node::External";
158
159package AnyEvent::MP::Node::Indirect;
160
161use base "AnyEvent::MP::Node::Direct"; 207use base "AnyEvent::MP::Node";
162 208
163sub connect { 209sub connect {
164 my ($self) = @_; 210 # we are trivially connected
165
166 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
167} 211}
168 212
169package AnyEvent::MP::Node::Self; 213# delay every so often to avoid recursion, also used to delay after spawn
214our $DELAY = -50;
215our @DELAY;
216our $DELAY_W;
170 217
171use base "AnyEvent::MP::Node"; 218sub _send_delayed {
219 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
220 (shift @DELAY)->()
221 while @DELAY;
222 undef $DELAY_W;
223 $DELAY = -50;
224}
172 225
173sub transport_reset { 226sub transport_reset {
174 my ($self) = @_; 227 my ($self) = @_;
175 228
229 Scalar::Util::weaken $self;
230
176 $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
177 local $AnyEvent::MP::Kernel::SRCNODE = $_[0]; 239 local $AnyEvent::MP::Kernel::SRCNODE = $self;
178 AnyEvent::MP::Kernel::_inject (@{ $_[1] }); 240 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
179 }; 241 };
242}
243
244sub transport_connect {
245 my ($self, $tp) = @_;
246
247 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
180} 248}
181 249
182sub kill { 250sub kill {
183 my ($self, $port, @reason) = @_; 251 my (undef, @args) = @_;
184 252
185 delete $AnyEvent::MP::Kernel::PORT{$port}; 253 # we _always_ delay kil's, to avoid calling mon callbacks
186 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 254 # from anything but the event loop context.
187 255 $DELAY = 1;
188 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 256 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
189 or !@reason 257 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
190 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
191
192 $_->(@reason) for values %$mon;
193} 258}
194 259
195sub monitor { 260sub monitor {
196 my ($self, $portid, $cb) = @_; 261 # maybe always delay, too?
197 262 if ($DELAY_W) {
198 return $cb->(no_such_port => "cannot monitor nonexistent port") 263 my @args = @_;
199 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 264 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
200 265 return;
201 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 266 }
267 &AnyEvent::MP::Kernel::_monitor;
202} 268}
203 269
204sub unmonitor { 270sub unmonitor {
205 my ($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 }
206 277
207 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 278 &AnyEvent::MP::Kernel::_unmonitor;
208} 279}
209 280
210=head1 SEE ALSO 281=head1 SEE ALSO
211 282
212L<AnyEvent::MP>. 283L<AnyEvent::MP>.

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