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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.30 by root, Fri Aug 28 20:57:42 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
… …
56 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
57 $self->connect; 59 $self->connect;
58 }; 60 };
59} 61}
60 62
61# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
62sub transport_error { 65sub transport_error {
63 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
64 67
65 my $no_transport = !$self->{transport}; 68 my $no_transport = !$self->{transport};
66 69
… …
74 $_->(@reason) for map @$_, values %$mon; 77 $_->(@reason) for map @$_, values %$mon;
75 } 78 }
76 79
77 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
78 unless $no_transport; 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} || $self->{connect_to};
79} 86}
80 87
81# called after handshake was successful 88# called after handshake was successful
82sub transport_connect { 89sub transport_connect {
83 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
84 91
85 delete $self->{trial}; 92 delete $self->{trial};
86 93
87 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
88 if $self->{transport}; 95 if $self->{transport};
89 96
97 delete $self->{connect_addr};
90 delete $self->{connect_w}; 98 delete $self->{connect_w};
91 delete $self->{connect_to}; 99 delete $self->{connect_to};
92 100
93 $self->{transport} = $transport; 101 $self->{transport} = $transport;
94 102
95 my $transport_send = $transport->can ("send"); 103 my $transport_send = $transport->{send};
96
97 $self->{send} = sub {
98 $transport_send->($transport, $_[0]);
99 };
100 104
101 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); 105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
102 106
107 $self->{send} = $transport_send;
108
103 $transport->send ($_) 109 $transport_send->($_)
104 for @{ delete $self->{queue} || [] }; 110 for @{ delete $self->{queue} || [] };
105} 111}
106 112
107sub connect { 113sub connect {
108 my ($self, @addresses) = @_; 114 my ($self, @addresses) = @_;
109 115
110 return if $self->{transport}; 116 return if $self->{transport};
111 117
112 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
113 119
120 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
121
114 $self->{connect_to} ||= AE::timer 122 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
115 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
116 0,
117 sub {
118 $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} },
119 }; 162 };
120
121 return unless @addresses;
122
123 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
124
125 unless ($self->{connect_w}) {
126 my @endpoints;
127
128 $self->{connect_w} = AE::timer
129 rand,
130 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
131 sub {
132 @endpoints = @addresses
133 unless @endpoints;
134
135 my $endpoint = shift @endpoints;
136
137 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
138
139 $self->{trial}{$endpoint} ||= do {
140 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
141 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
142
143 AnyEvent::MP::Transport::mp_connect
144 $host, $port,
145 sub { delete $self->{trial}{$endpoint} },
146 };
147 }
148 ;
149 } 163 };
150} 164}
151 165
152sub kill { 166sub kill {
153 my ($self, $port, @reason) = @_; 167 my ($self, $port, @reason) = @_;
154 168
… …
191 205
192sub connect { 206sub connect {
193 # we are trivially connected 207 # we are trivially connected
194} 208}
195 209
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 $DELAY = -50;
221}
222
196sub transport_reset { 223sub transport_reset {
197 my ($self) = @_; 224 my ($self) = @_;
198 225
199 Scalar::Util::weaken $self; 226 Scalar::Util::weaken $self;
200 227
201 $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
202 local $AnyEvent::MP::Kernel::SRCNODE = $self; 236 local $AnyEvent::MP::Kernel::SRCNODE = $self;
203 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 237 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204 }; 238 };
205} 239}
206 240
… …
209 243
210 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); 244 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
211} 245}
212 246
213sub kill { 247sub kill {
214 my ($self, $port, @reason) = @_; 248 my (undef, @args) = @_;
215 249
216 delete $AnyEvent::MP::Kernel::PORT{$port}; 250 # we _always_ delay kil's, to avoid calling mon callbacks
217 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 251 # from anything but the event loop context.
218 252 $DELAY = 1;
219 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 253 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
220 or !@reason 254 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
221 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
222
223 $_->(@reason) for values %$mon;
224} 255}
225 256
226sub monitor { 257sub monitor {
227 my ($self, $portid, $cb) = @_; 258 # maybe always delay, too?
228 259 if ($DELAY_W) {
229 return $cb->(no_such_port => "cannot monitor nonexistent port") 260 my @args = @_;
230 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 261 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
231 262 return;
232 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 263 }
264 &AnyEvent::MP::Kernel::_monitor;
233} 265}
234 266
235sub unmonitor { 267sub unmonitor {
236 my ($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 }
237 274
238 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 275 &AnyEvent::MP::Kernel::_unmonitor;
239} 276}
240 277
241=head1 SEE ALSO 278=head1 SEE ALSO
242 279
243L<AnyEvent::MP>. 280L<AnyEvent::MP>.

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