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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.27 by root, Thu Aug 27 07:12:48 2009 UTC vs.
Revision 1.65 by root, Fri Mar 23 21:16:36 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 10
11This is an internal utility module, horrible to look at, so don't.
12
11=cut 13=cut
12 14
13package AnyEvent::MP::Node; 15package AnyEvent::MP::Node; # base class for nodes
14 16
15use common::sense; 17use common::sense;
16 18
17use AE ();
18use AnyEvent::Util (); 19use AnyEvent ();
19use AnyEvent::Socket (); 20use AnyEvent::Socket ();
20 21
21use AnyEvent::MP::Transport (); 22use AnyEvent::MP::Transport ();
22 23
23sub new { 24sub new {
24 my ($self, $noderef) = @_; 25 my ($self, $id) = @_;
25 26
26 $self = bless { noderef => $noderef }, $self; 27 $self = bless { id => $id }, $self;
27 28
28 $self->init; 29 $self->init;
29 $self->transport_reset; 30 $self->transport_reset;
30 31
31 $self 32 $self
… …
38sub send { 39sub send {
39 &{ shift->{send} } 40 &{ shift->{send} }
40} 41}
41 42
42# nodes reachable via the network 43# nodes reachable via the network
43package AnyEvent::MP::Node::External; 44package AnyEvent::MP::Node::Remote; # a remote node
44 45
45use base "AnyEvent::MP::Node"; 46use base "AnyEvent::MP::Node";
46 47
47# called at init time, mostly sets {send} 48# called at init time, mostly sets {send}
48sub transport_reset { 49sub transport_reset {
… …
54 55
55 $self->{send} = sub { 56 $self->{send} = sub {
56 push @{$self->{queue}}, shift; 57 push @{$self->{queue}}, shift;
57 $self->connect; 58 $self->connect;
58 }; 59 };
59
60 $self->connect
61 if $self->{autoconnect};
62} 60}
63 61
64# called only after successful handshake 62# called each time we fail to establish a connection,
63# or the existing connection failed
65sub transport_error { 64sub transport_error {
66 my ($self, @reason) = @_; 65 my ($self, @reason) = @_;
67 66
68 my $no_transport = !$self->{transport}; 67 my $no_transport = !$self->{transport};
69 68
… …
71 delete $self->{connect_to}; 70 delete $self->{connect_to};
72 71
73 delete $self->{queue}; 72 delete $self->{queue};
74 $self->transport_reset; 73 $self->transport_reset;
75 74
75 if (my $mon = delete $self->{lmon}) {
76 $_->(@reason) for map @$_, values %$mon;
77 }
78
76 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
77 unless $no_transport; 80 unless $no_transport;
78 81
79 if (my $mon = delete $self->{lmon}) { 82 # if we are here and are idle, we nuke ourselves
80 $_->(@reason) for map @$_, values %$mon; 83 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
81 } 84 unless $self->{transport} || $self->{connect_to};
82} 85}
83 86
84# called after handshake was successful 87# called after handshake was successful
85sub transport_connect { 88sub transport_connect {
86 my ($self, $transport) = @_; 89 my ($self, $transport) = @_;
87 90
91 delete $self->{trial};
92
88 $self->transport_error (transport_error => "switched connections") 93 $self->transport_error (transport_error => $self->{id}, "switched connections")
89 if $self->{transport}; 94 if $self->{transport};
90 95
91 delete $self->{connect_w}; 96 delete $self->{connect_w};
92 delete $self->{connect_to}; 97 delete $self->{connect_to};
93 98
94 $self->{transport} = $transport; 99 $self->{transport} = $transport;
95 100
96 my $transport_send = $transport->can ("send"); 101 my $transport_send = $transport->{send};
97
98 $self->{send} = sub {
99 $transport_send->($transport, $_[0]);
100 };
101 102
102 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
103 104
105 $self->{send} = $transport_send;
106
104 $transport->send ($_) 107 $transport_send->($_)
105 for @{ delete $self->{queue} || [] }; 108 for @{ delete $self->{queue} || [] };
106} 109}
107 110
108sub connect { 111sub connect {
109 my ($self) = @_; 112 my ($self) = @_;
110 113
111 return if $self->{transport}; 114 return if $self->{transport};
112 115 return if $self->{connect_w};
113 # just ignore connect requests for slave nodes - let's hope it connects to us instead
114 return if $self->{noderef} =~ /^slave\//;
115 116
116 Scalar::Util::weaken $self; 117 Scalar::Util::weaken $self;
117 118
118 $self->{connect_to} ||= AE::timer 119 $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub {
119 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
120 0,
121 sub {
122 $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); 120 $self->transport_error (transport_error => $self->{id}, "unable to connect");
121 };
122
123 # maybe @$addresses?
124 my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}};
125
126 if ($addresses) {
127 $self->connect_to ($addresses);
128 } else {
129 # on global nodes, all bets are off now - we either know the node, or we don't
130 unless ($AnyEvent::MP::Kernel::GLOBAL) {
131 AnyEvent::MP::Kernel::g_find ($self->{id});
132 }
133 }
134}
135
136sub connect_to {
137 my ($self, $addresses) = @_;
138
139 return if $self->{transport};
140 return if $self->{connect_w};
141
142 return unless @$addresses;
143
144 AE::log 9 => "connecting to $self->{id} with [@$addresses]";
145
146 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
147 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
148
149 $interval = ($monitor - $interval) / @$addresses
150 if ($monitor - $interval) / @$addresses < $interval;
151
152 $interval = 0.4 if $interval < 0.4;
153
154 my @endpoints = reverse @$addresses;
155
156 $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub {
157 my $endpoint = pop @endpoints;
158
159 AE::log 9 => "connecting to $self->{id} at $endpoint";
160
161 $self->{trial}{$endpoint} ||= do {
162 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
163 or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference.";
164
165 AnyEvent::MP::Transport::mp_connect
166 $host, $port,
167 sub { delete $self->{trial}{$endpoint} },
123 }; 168 };
124
125 unless ($self->{connect_w}) {
126 my @endpoints;
127 my %trial;
128
129 $self->{connect_w} = AE::timer
130 rand,
131 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
132 sub {
133 @endpoints = split /,/, $self->{noderef}
134 unless @endpoints;
135
136 my $endpoint = shift @endpoints;
137
138 $trial{$endpoint} ||= do {
139 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
140 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{noderef}: not a resolved node reference.");
141
142 AnyEvent::MP::Transport::mp_connect
143 $host, $port,
144 sub { delete $trial{$endpoint} }
145 ;
146 };
147 }
148 ;
149 } 169 };
150} 170}
151 171
152sub kill { 172sub kill {
153 my ($self, $port, @reason) = @_; 173 my ($self, $port, @reason) = @_;
154 174
155 $self->send (["", kil => $port, @reason]); 175 $self->{send} (["", kil => $port, @reason]);
156} 176}
157 177
158sub monitor { 178sub monitor {
159 my ($self, $portid, $cb) = @_; 179 my ($self, $portid, $cb) = @_;
160 180
… …
178 $self->send (["", mon0 => $portid]); 198 $self->send (["", mon0 => $portid]);
179 delete $self->{monitor}{$portid}; 199 delete $self->{monitor}{$portid};
180 } 200 }
181} 201}
182 202
183# used for direct slave connections as well
184package AnyEvent::MP::Node::Direct;
185
186use base "AnyEvent::MP::Node::External";
187
188package AnyEvent::MP::Node::Self; 203package AnyEvent::MP::Node::Self; # the local node
189 204
190use base "AnyEvent::MP::Node"; 205use base "AnyEvent::MP::Node";
191 206
192sub connect { 207sub connect {
193 # we are trivially connected 208 # we are trivially connected
194} 209}
195 210
211# delay every so often to avoid recursion, also used to delay after spawn
212our $DELAY = -50;
213our @DELAY;
214our $DELAY_W;
215
216our $send_delayed = sub {
217 $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
218 (shift @DELAY)->()
219 while @DELAY;
220 undef $DELAY_W;
221 $DELAY = -50;
222};
223
196sub transport_reset { 224sub transport_reset {
197 my ($self) = @_; 225 my ($self) = @_;
198 226
199 Scalar::Util::weaken $self; 227 Scalar::Util::weaken $self;
200 228
201 $self->{send} = sub { 229 $self->{send} = sub {
230 if (++$DELAY > 0) {
231 my $msg = $_[0];
232 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
233 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
234 return;
235 }
236
202 local $AnyEvent::MP::Kernel::SRCNODE = $self; 237 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE;
203 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 238 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204 }; 239 };
205} 240}
206 241
242sub transport_connect {
243 my ($self, $tp) = @_;
244
245 AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})";
246}
247
207sub kill { 248sub kill {
208 my ($self, $port, @reason) = @_; 249 my (undef, @args) = @_;
209 250
210 delete $AnyEvent::MP::Kernel::PORT{$port}; 251 # we _always_ delay kil's, to avoid calling mon callbacks
211 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 252 # from anything but the event loop context.
212 253 $DELAY = 1;
213 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 254 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
214 or !@reason 255 $DELAY_W ||= AE::timer 0, 0, $send_delayed;
215 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
216
217 $_->(@reason) for values %$mon;
218} 256}
219 257
220sub monitor { 258sub monitor {
221 my ($self, $portid, $cb) = @_; 259 # maybe always delay, too?
222 260 if ($DELAY_W) {
223 return $cb->(no_such_port => "cannot monitor nonexistent port") 261 my @args = @_;
224 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 262 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
225 263 return;
226 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 264 }
265 &AnyEvent::MP::Kernel::_monitor;
227} 266}
228 267
229sub unmonitor { 268sub unmonitor {
230 my ($self, $portid, $cb) = @_; 269 # no need to always delay
270 if ($DELAY_W) {
271 my @args = @_;
272 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
273 return;
274 }
231 275
232 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 276 &AnyEvent::MP::Kernel::_unmonitor;
233} 277}
234 278
235=head1 SEE ALSO 279=head1 SEE ALSO
236 280
237L<AnyEvent::MP>. 281L<AnyEvent::MP>.

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