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 1.19 by root, Wed Aug 12 22:03:15 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
72 my $no_transport = !$self->{transport};
73
74 delete $self->{connect_w};
75 delete $self->{connect_to};
76
59 delete $self->{queue}; 77 delete $self->{queue};
60 $self->transport_reset; 78 $self->transport_reset;
61 79
62 if (my $mon = delete $self->{lmon}) { 80 if (my $mon = delete $self->{lmon}) {
63 $_->(@reason) for map @$_, values %$mon; 81 $_->(@reason) for map @$_, values %$mon;
64 } 82 }
83
84 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
65} 90}
66 91
67# called after handshake was successful 92# called after handshake was successful
68sub transport_connect { 93sub transport_connect {
69 my ($self, $transport) = @_; 94 my ($self, $transport) = @_;
70 95
71 $self->transport_reset 96 delete $self->{trial};
97
98 $self->transport_error (transport_error => $self->{id}, "switched connections")
72 if $self->{transport}; 99 if $self->{transport};
73 100
101 delete $self->{connect_addr};
74 delete $self->{connect_w}; 102 delete $self->{connect_w};
75 delete $self->{connect_to}; 103 delete $self->{connect_to};
76 104
77 $self->{transport} = $transport; 105 $self->{transport} = $transport;
78 106
79 my $transport_send = $transport->can ("send"); 107 my $transport_send = $transport->{send};
80 108
81 $self->{send} = sub { 109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
82 $transport_send->($transport, $_[0]);
83 };
84 110
111 $self->{send} = $transport_send;
112
85 $transport->send ($_) 113 $transport_send->($_)
86 for @{ delete $self->{queue} || [] }; 114 for @{ delete $self->{queue} || [] };
87} 115}
88 116
89sub connect { 117sub connect {
90 my ($self) = @_; 118 my ($self) = @_;
91 119
120 return if $self->{transport};
121 return if $self->{connect_w};
122
92 Scalar::Util::weaken $self; 123 Scalar::Util::weaken $self;
93 124
125 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
126
94 $self->{connect_to} ||= AE::timer 127 $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"); 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} },
99 }; 170 };
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 } 171 };
126} 172}
127 173
128sub kill { 174sub kill {
129 my ($self, $port, @reason) = @_; 175 my ($self, $port, @reason) = @_;
130 176
131 $self->send (["", kil => $port, @reason]); 177 $self->{send} (["", kil => $port, @reason]);
132} 178}
133 179
134sub monitor { 180sub monitor {
135 my ($self, $portid, $cb) = @_; 181 my ($self, $portid, $cb) = @_;
136 182
137 my $list = $self->{lmon}{$portid} ||= []; 183 my $list = $self->{lmon}{$portid} ||= [];
138 184
139 $self->send (["", mon1 => $portid]) 185 $self->send (["", mon1 => $portid])
140 unless @$list; 186 unless @$list || !length $portid;
141 187
142 push @$list, $cb; 188 push @$list, $cb;
143} 189}
144 190
145sub unmonitor { 191sub unmonitor {
… …
154 $self->send (["", mon0 => $portid]); 200 $self->send (["", mon0 => $portid]);
155 delete $self->{monitor}{$portid}; 201 delete $self->{monitor}{$portid};
156 } 202 }
157} 203}
158 204
159package AnyEvent::MP::Node::Direct; 205package AnyEvent::MP::Node::Self;
160 206
161use base "AnyEvent::MP::Node::External";
162
163package AnyEvent::MP::Node::Indirect;
164
165use base "AnyEvent::MP::Node::Direct"; 207use base "AnyEvent::MP::Node";
166 208
167sub connect { 209sub connect {
168 my ($self) = @_; 210 # we are trivially connected
169
170 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
171} 211}
172 212
173package 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;
174 217
175use 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 $DELAY = -50;
224}
176 225
177sub transport_reset { 226sub transport_reset {
178 my ($self) = @_; 227 my ($self) = @_;
179 228
180 Scalar::Util::weaken $self; 229 Scalar::Util::weaken $self;
181 230
182 $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
183 local $AnyEvent::MP::Kernel::SRCNODE = $self; 239 local $AnyEvent::MP::Kernel::SRCNODE = $self;
184 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 240 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
185 }; 241 };
186} 242}
187 243
244sub transport_connect {
245 my ($self, $tp) = @_;
246
247 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
248}
249
188sub kill { 250sub kill {
189 my ($self, $port, @reason) = @_; 251 my (undef, @args) = @_;
190 252
191 delete $AnyEvent::MP::Kernel::PORT{$port}; 253 # we _always_ delay kil's, to avoid calling mon callbacks
192 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 254 # from anything but the event loop context.
193 255 $DELAY = 1;
194 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 256 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
195 or !@reason 257 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
196 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
197
198 $_->(@reason) for values %$mon;
199} 258}
200 259
201sub monitor { 260sub monitor {
202 my ($self, $portid, $cb) = @_; 261 # maybe always delay, too?
203 262 if ($DELAY_W) {
204 return $cb->(no_such_port => "cannot monitor nonexistent port") 263 my @args = @_;
205 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 264 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
206 265 return;
207 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 266 }
267 &AnyEvent::MP::Kernel::_monitor;
208} 268}
209 269
210sub unmonitor { 270sub unmonitor {
211 my ($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 }
212 277
213 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 278 &AnyEvent::MP::Kernel::_unmonitor;
214} 279}
215 280
216=head1 SEE ALSO 281=head1 SEE ALSO
217 282
218L<AnyEvent::MP>. 283L<AnyEvent::MP>.

Diff Legend

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