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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.29 by root, Fri Aug 28 00:31:14 2009 UTC vs.
Revision 1.52 by root, Sat Mar 13 20:29:04 2010 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
… …
54 56
55 $self->{send} = sub { 57 $self->{send} = sub {
56 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
57 $self->connect; 59 $self->connect;
58 }; 60 };
59
60 $self->connect
61 if $self->{autoconnect};
62} 61}
63 62
64# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error { 65sub transport_error {
66 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
67 67
68 my $no_transport = !$self->{transport}; 68 my $no_transport = !$self->{transport};
69 69
… …
71 delete $self->{connect_to}; 71 delete $self->{connect_to};
72 72
73 delete $self->{queue}; 73 delete $self->{queue};
74 $self->transport_reset; 74 $self->transport_reset;
75 75
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
78 }
79
76 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
77 unless $no_transport; 81 unless $no_transport;
78 82
79 if (my $mon = delete $self->{lmon}) { 83 # if we are here and are idle, we nuke ourselves
80 $_->(@reason) for map @$_, values %$mon; 84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
81 } 85 unless $self->{transport} || $self->{connect_to};
82} 86}
83 87
84# called after handshake was successful 88# called after handshake was successful
85sub transport_connect { 89sub transport_connect {
86 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
87 91
88 delete $self->{trial}; 92 delete $self->{trial};
89 93
90 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
91 if $self->{transport}; 95 if $self->{transport};
92 96
97 delete $self->{connect_addr};
93 delete $self->{connect_w}; 98 delete $self->{connect_w};
94 delete $self->{connect_to}; 99 delete $self->{connect_to};
95 100
96 $self->{transport} = $transport; 101 $self->{transport} = $transport;
97 102
98 my $transport_send = $transport->can ("send"); 103 my $transport_send = $transport->{send};
99
100 $self->{send} = sub {
101 $transport_send->($transport, $_[0]);
102 };
103 104
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
105 106
107 $self->{send} = $transport_send;
108
106 $transport->send ($_) 109 $transport_send->($_)
107 for @{ delete $self->{queue} || [] }; 110 for @{ delete $self->{queue} || [] };
108} 111}
109 112
110sub connect { 113sub connect {
111 my ($self, @addresses) = @_; 114 my ($self, @addresses) = @_;
112 115
113 return if $self->{transport}; 116 return if $self->{transport};
114 117
115 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
116 119
120 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
121
117 $self->{connect_to} ||= AE::timer 122 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
118 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
119 0,
120 sub {
121 $self->transport_error (transport_error => $self->{id}, "unable to connect"); 123 $self->transport_error (transport_error => $self->{id}, "unable to connect");
124 };
125
126 return unless @addresses;
127
128 if ($self->{connect_w}) {
129 # sometimes we get told about new addresses after we started to connect
130 unshift @{$self->{connect_addr}}, @addresses;
131 return;
132 }
133
134 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
135
136 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
137
138 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
139
140 $interval = ($monitor - $interval) / @addresses
141 if ($monitor - $interval) / @addresses < $interval;
142
143 $interval = 0.4 if $interval < 0.4;
144
145 my @endpoints;
146
147 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
148 @endpoints = @addresses
149 unless @endpoints;
150
151 my $endpoint = shift @endpoints;
152
153 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
154
155 $self->{trial}{$endpoint} ||= do {
156 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
157 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
158
159 AnyEvent::MP::Transport::mp_connect
160 $host, $port,
161 sub { delete $self->{trial}{$endpoint} },
122 }; 162 };
123
124 return unless @addresses;
125
126 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
127
128 unless ($self->{connect_w}) {
129 my @endpoints;
130
131 $self->{connect_w} = AE::timer
132 rand,
133 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
134 sub {
135 @endpoints = @addresses
136 unless @endpoints;
137
138 my $endpoint = shift @endpoints;
139
140 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
141
142 $self->{trial}{$endpoint} ||= do {
143 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
144 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
145
146 AnyEvent::MP::Transport::mp_connect
147 $host, $port,
148 sub { delete $self->{trial}{$endpoint} },
149 };
150 }
151 ;
152 } 163 };
153} 164}
154 165
155sub kill { 166sub kill {
156 my ($self, $port, @reason) = @_; 167 my ($self, $port, @reason) = @_;
157 168
… …
194 205
195sub connect { 206sub connect {
196 # we are trivially connected 207 # we are trivially connected
197} 208}
198 209
210# delay every so often to avoid recursion, also used to delay after spawn
211our $DELAY = -50;
212our @DELAY;
213our $DELAY_W;
214
215sub _send_delayed {
216 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
217 (shift @DELAY)->()
218 while @DELAY;
219 undef $DELAY_W;
220 $DELAY = -50;
221}
222
199sub transport_reset { 223sub transport_reset {
200 my ($self) = @_; 224 my ($self) = @_;
201 225
202 Scalar::Util::weaken $self; 226 Scalar::Util::weaken $self;
203 227
204 $self->{send} = sub { 228 $self->{send} = sub {
229 if ($DELAY++ >= 0) {
230 my $msg = $_[0];
231 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
232 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
233 return;
234 }
235
205 local $AnyEvent::MP::Kernel::SRCNODE = $self; 236 local $AnyEvent::MP::Kernel::SRCNODE = $self;
206 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 237 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
207 }; 238 };
208} 239}
209 240
… …
212 243
213 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 244 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
214} 245}
215 246
216sub kill { 247sub kill {
217 my ($self, $port, @reason) = @_; 248 my (undef, @args) = @_;
218 249
219 delete $AnyEvent::MP::Kernel::PORT{$port}; 250 # we _always_ delay kil's, to avoid calling mon callbacks
220 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 251 # from anything but the event loop context.
221 252 $DELAY = 1;
222 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 253 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
223 or !@reason 254 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
224 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
225
226 $_->(@reason) for values %$mon;
227} 255}
228 256
229sub monitor { 257sub monitor {
230 my ($self, $portid, $cb) = @_; 258 # maybe always delay, too?
231 259 if ($DELAY_W) {
232 return $cb->(no_such_port => "cannot monitor nonexistent port") 260 my @args = @_;
233 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 261 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
234 262 return;
235 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 263 }
264 &AnyEvent::MP::Kernel::_monitor;
236} 265}
237 266
238sub unmonitor { 267sub unmonitor {
239 my ($self, $portid, $cb) = @_; 268 # no need to always delay
269 if ($DELAY_W) {
270 my @args = @_;
271 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
272 return;
273 }
240 274
241 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 275 &AnyEvent::MP::Kernel::_unmonitor;
242} 276}
243 277
244=head1 SEE ALSO 278=head1 SEE ALSO
245 279
246L<AnyEvent::MP>. 280L<AnyEvent::MP>.

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