ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/AnyEvent-MP/MP/Node.pm
(Generate patch)

Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.22 by root, Thu Aug 13 22:50:47 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 $self
34}
35
36sub init {
37 #
38}
39
40#d# only needed for bad global code at the moment
41sub transport_error {
31} 42}
32 43
33sub send { 44sub send {
34 &{ shift->{send} } 45 &{ shift->{send} }
35} 46}
36 47
48# nodes reachable via the network
37package AnyEvent::MP::Node::External; 49package AnyEvent::MP::Node::Remote;
38 50
39use base "AnyEvent::MP::Node"; 51use base "AnyEvent::MP::Node";
40 52
41# called at init time, mostly sets {send} 53# called at init time, mostly sets {send}
42sub transport_reset { 54sub transport_reset {
… …
50 push @{$self->{queue}}, shift; 62 push @{$self->{queue}}, shift;
51 $self->connect; 63 $self->connect;
52 }; 64 };
53} 65}
54 66
55# called only after successful handshake 67# called each time we fail to establish a connection,
68# or the existing connection failed
56sub transport_error { 69sub transport_error {
57 my ($self, @reason) = @_; 70 my ($self, @reason) = @_;
58 71
59 my $no_transport = !$self->{transport}; 72 my $no_transport = !$self->{transport};
60 73
… …
62 delete $self->{connect_to}; 75 delete $self->{connect_to};
63 76
64 delete $self->{queue}; 77 delete $self->{queue};
65 $self->transport_reset; 78 $self->transport_reset;
66 79
80 if (my $mon = delete $self->{lmon}) {
81 $_->(@reason) for map @$_, values %$mon;
82 }
83
67 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 84 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
68 unless $no_transport; 85 unless $no_transport;
69 86
70 if (my $mon = delete $self->{lmon}) { 87 # if we are here and are idle, we nuke ourselves
71 $_->(@reason) for map @$_, values %$mon; 88 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
72 } 89 unless $self->{transport} || $self->{connect_to};
73} 90}
74 91
75# called after handshake was successful 92# called after handshake was successful
76sub transport_connect { 93sub transport_connect {
77 my ($self, $transport) = @_; 94 my ($self, $transport) = @_;
78 95
96 delete $self->{trial};
97
79 $self->transport_error (transport_error => "switched connections") 98 $self->transport_error (transport_error => $self->{id}, "switched connections")
80 if $self->{transport}; 99 if $self->{transport};
81 100
101 delete $self->{connect_addr};
82 delete $self->{connect_w}; 102 delete $self->{connect_w};
83 delete $self->{connect_to}; 103 delete $self->{connect_to};
84 104
85 $self->{transport} = $transport; 105 $self->{transport} = $transport;
86 106
87 my $transport_send = $transport->can ("send"); 107 my $transport_send = $transport->{send};
88
89 $self->{send} = sub {
90 $transport_send->($transport, $_[0]);
91 };
92 108
93 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
94 110
111 $self->{send} = $transport_send;
112
95 $transport->send ($_) 113 $transport_send->($_)
96 for @{ delete $self->{queue} || [] }; 114 for @{ delete $self->{queue} || [] };
97} 115}
98 116
99sub connect { 117sub connect {
100 my ($self) = @_; 118 my ($self) = @_;
101 119
120 return if $self->{transport};
121 return if $self->{connect_w};
122
102 Scalar::Util::weaken $self; 123 Scalar::Util::weaken $self;
103 124
125 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
126
104 $self->{connect_to} ||= AE::timer 127 $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"); 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} },
109 }; 170 };
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 } 171 };
136} 172}
137 173
138sub kill { 174sub kill {
139 my ($self, $port, @reason) = @_; 175 my ($self, $port, @reason) = @_;
140 176
141 $self->send (["", kil => $port, @reason]); 177 $self->{send} (["", kil => $port, @reason]);
142} 178}
143 179
144sub monitor { 180sub monitor {
145 my ($self, $portid, $cb) = @_; 181 my ($self, $portid, $cb) = @_;
146 182
147 my $list = $self->{lmon}{$portid} ||= []; 183 my $list = $self->{lmon}{$portid} ||= [];
148 184
149 $self->send (["", mon1 => $portid]) 185 $self->send (["", mon1 => $portid])
150 unless @$list; 186 unless @$list || !length $portid;
151 187
152 push @$list, $cb; 188 push @$list, $cb;
153} 189}
154 190
155sub unmonitor { 191sub unmonitor {
… …
164 $self->send (["", mon0 => $portid]); 200 $self->send (["", mon0 => $portid]);
165 delete $self->{monitor}{$portid}; 201 delete $self->{monitor}{$portid};
166 } 202 }
167} 203}
168 204
169package AnyEvent::MP::Node::Direct; 205package AnyEvent::MP::Node::Self;
170 206
171use base "AnyEvent::MP::Node::External";
172
173package AnyEvent::MP::Node::Indirect;
174
175use base "AnyEvent::MP::Node::Direct"; 207use base "AnyEvent::MP::Node";
208
209sub connect {
210 # we are trivially connected
211}
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 $DELAY = -50;
224}
176 225
177sub transport_reset { 226sub transport_reset {
178 my ($self) = @_; 227 my ($self) = @_;
179 228
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; 229 Scalar::Util::weaken $self;
205 230
206 $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
207 local $AnyEvent::MP::Kernel::SRCNODE = $self; 239 local $AnyEvent::MP::Kernel::SRCNODE = $self;
208 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 240 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
209 }; 241 };
210} 242}
211 243
244sub transport_connect {
245 my ($self, $tp) = @_;
246
247 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
248}
249
212sub kill { 250sub kill {
213 my ($self, $port, @reason) = @_; 251 my (undef, @args) = @_;
214 252
215 delete $AnyEvent::MP::Kernel::PORT{$port}; 253 # we _always_ delay kil's, to avoid calling mon callbacks
216 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 254 # from anything but the event loop context.
217 255 $DELAY = 1;
218 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 256 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
219 or !@reason 257 $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} 258}
224 259
225sub monitor { 260sub monitor {
226 my ($self, $portid, $cb) = @_; 261 # maybe always delay, too?
227 262 if ($DELAY_W) {
228 return $cb->(no_such_port => "cannot monitor nonexistent port") 263 my @args = @_;
229 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 264 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
230 265 return;
231 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 266 }
267 &AnyEvent::MP::Kernel::_monitor;
232} 268}
233 269
234sub unmonitor { 270sub unmonitor {
235 my ($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 }
236 277
237 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 278 &AnyEvent::MP::Kernel::_unmonitor;
238} 279}
239 280
240=head1 SEE ALSO 281=head1 SEE ALSO
241 282
242L<AnyEvent::MP>. 283L<AnyEvent::MP>.

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines