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 1.18 by root, Wed Aug 12 21:39:59 2009 UTC vs.
Revision 1.50 by root, Wed Dec 30 15:49:05 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 $self
31} 34}
32 35
36sub init {
37 #
38}
39
33sub send { 40sub send {
34 &{$_[0]->{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}
42sub transport_reset { 50sub transport_reset {
43 my ($self) = @_; 51 my ($self) = @_;
44 52
45 delete $self->{transport}; 53 delete $self->{transport};
46 54
55 Scalar::Util::weaken $self;
56
47 $self->{send} = sub { 57 $self->{send} = sub {
48 push @{$_[0]{queue}}, $_[1]; 58 push @{$self->{queue}}, shift;
49 $_[0]->connect; 59 $self->connect;
50 }; 60 };
51} 61}
52 62
53# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
54sub transport_error { 65sub transport_error {
55 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
56 67
68 my $no_transport = !$self->{transport};
69
70 delete $self->{connect_w};
71 delete $self->{connect_to};
72
57 delete $self->{queue}; 73 delete $self->{queue};
58 $self->transport_reset; 74 $self->transport_reset;
59 75
60 if (my $mon = delete $self->{lmon}) { 76 if (my $mon = delete $self->{lmon}) {
61 $_->(@reason) for map @$_, values %$mon; 77 $_->(@reason) for map @$_, values %$mon;
62 } 78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
63} 86}
64 87
65# called after handshake was successful 88# called after handshake was successful
66sub transport_connect { 89sub transport_connect {
67 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
68 91
69 $self->transport_reset 92 delete $self->{trial};
93
94 $self->transport_error (transport_error => "switched connections")
70 if $self->{transport}; 95 if $self->{transport};
71 96
97 delete $self->{connect_addr};
72 delete $self->{connect_w}; 98 delete $self->{connect_w};
73 delete $self->{connect_to}; 99 delete $self->{connect_to};
74 100
75 $self->{transport} = $transport; 101 $self->{transport} = $transport;
76 102
103 my $transport_send = $transport->can ("send");
104
105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
106
77 $self->{send} = sub { 107 $self->{send} = sub {
78 $transport->send ($_[1]); 108 $transport_send->($transport, $_[0]);
79 }; 109 };
80 110
81 $transport->send ($_) 111 $transport->send ($_)
82 for @{ delete $self->{queue} || [] }; 112 for @{ delete $self->{queue} || [] };
83} 113}
84 114
85sub connect { 115sub connect {
86 my ($self) = @_; 116 my ($self, @addresses) = @_;
117
118 return if $self->{transport};
87 119
88 Scalar::Util::weaken $self; 120 Scalar::Util::weaken $self;
89 121
122 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
123
90 $self->{connect_to} ||= AE::timer 124 $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"); 125 $self->transport_error (transport_error => $self->{id}, "unable to connect");
126 };
127
128 return unless @addresses;
129
130 if ($self->{connect_w}) {
131 # sometimes we get told about new addresses after we started to connect
132 unshift @{$self->{connect_addr}}, @addresses;
133 return;
134 }
135
136 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
137
138 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
139
140 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
141
142 $interval = ($monitor - $interval) / @addresses
143 if ($monitor - $interval) / @addresses < $interval;
144
145 $interval = 0.4 if $interval < 0.4;
146
147 my @endpoints;
148
149 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
150 @endpoints = @addresses
151 unless @endpoints;
152
153 my $endpoint = shift @endpoints;
154
155 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
156
157 $self->{trial}{$endpoint} ||= do {
158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
160
161 AnyEvent::MP::Transport::mp_connect
162 $host, $port,
163 sub { delete $self->{trial}{$endpoint} },
95 }; 164 };
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 } 165 };
122} 166}
123 167
124sub kill { 168sub kill {
125 my ($self, $port, @reason) = @_; 169 my ($self, $port, @reason) = @_;
126 170
… …
131 my ($self, $portid, $cb) = @_; 175 my ($self, $portid, $cb) = @_;
132 176
133 my $list = $self->{lmon}{$portid} ||= []; 177 my $list = $self->{lmon}{$portid} ||= [];
134 178
135 $self->send (["", mon1 => $portid]) 179 $self->send (["", mon1 => $portid])
136 unless @$list; 180 unless @$list || !length $portid;
137 181
138 push @$list, $cb; 182 push @$list, $cb;
139} 183}
140 184
141sub unmonitor { 185sub unmonitor {
… …
150 $self->send (["", mon0 => $portid]); 194 $self->send (["", mon0 => $portid]);
151 delete $self->{monitor}{$portid}; 195 delete $self->{monitor}{$portid};
152 } 196 }
153} 197}
154 198
199# used for direct slave connections as well
155package AnyEvent::MP::Node::Direct; 200package AnyEvent::MP::Node::Direct;
156 201
157use base "AnyEvent::MP::Node::External"; 202use base "AnyEvent::MP::Node::External";
158 203
159package AnyEvent::MP::Node::Indirect; 204package AnyEvent::MP::Node::Self;
160 205
161use base "AnyEvent::MP::Node::Direct"; 206use base "AnyEvent::MP::Node";
162 207
163sub connect { 208sub connect {
164 my ($self) = @_; 209 # we are trivially connected
165
166 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
167} 210}
168 211
169package AnyEvent::MP::Node::Self; 212# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY = -50;
214our @DELAY;
215our $DELAY_W;
170 216
171use base "AnyEvent::MP::Node"; 217sub _send_delayed {
218 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
219 (shift @DELAY)->()
220 while @DELAY;
221 undef $DELAY_W;
222 $DELAY = -50;
223}
172 224
173sub transport_reset { 225sub transport_reset {
174 my ($self) = @_; 226 my ($self) = @_;
175 227
228 Scalar::Util::weaken $self;
229
176 $self->{send} = sub { 230 $self->{send} = sub {
231 if ($DELAY++ >= 0) {
232 my $msg = $_[0];
233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
234 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
235 return;
236 }
237
177 local $AnyEvent::MP::Kernel::SRCNODE = $_[0]; 238 local $AnyEvent::MP::Kernel::SRCNODE = $self;
178 AnyEvent::MP::Kernel::_inject (@{ $_[1] }); 239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
179 }; 240 };
241}
242
243sub transport_connect {
244 my ($self, $tp) = @_;
245
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
180} 247}
181 248
182sub kill { 249sub kill {
183 my ($self, $port, @reason) = @_; 250 my (undef, @args) = @_;
184 251
185 delete $AnyEvent::MP::Kernel::PORT{$port}; 252 # we _always_ delay kil's, to avoid calling mon callbacks
186 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 253 # from anything but the event loop context.
187 254 $DELAY = 1;
188 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 255 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
189 or !@reason 256 $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} 257}
194 258
195sub monitor { 259sub monitor {
196 my ($self, $portid, $cb) = @_; 260 # maybe always delay, too?
197 261 if ($DELAY_W) {
198 return $cb->(no_such_port => "cannot monitor nonexistent port") 262 my @args = @_;
199 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 263 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
200 264 return;
201 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 265 }
266 &AnyEvent::MP::Kernel::_monitor;
202} 267}
203 268
204sub unmonitor { 269sub unmonitor {
205 my ($self, $portid, $cb) = @_; 270 # no need to always delay
271 if ($DELAY_W) {
272 my @args = @_;
273 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
274 return;
275 }
206 276
207 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 277 &AnyEvent::MP::Kernel::_unmonitor;
208} 278}
209 279
210=head1 SEE ALSO 280=head1 SEE ALSO
211 281
212L<AnyEvent::MP>. 282L<AnyEvent::MP>.

Diff Legend

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