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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 1.51 by root, Sat Mar 13 00:29:41 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
… …
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
28 $self->init; 30 $self->init;
29 $self->transport_reset; 31 $self->transport_reset;
30 32
31 $self 33 $self
… …
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
92 delete $self->{trial};
93
88 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => $self->{id}, "switched connections")
89 if $self->{transport}; 95 if $self->{transport};
90 96
97 delete $self->{connect_addr};
91 delete $self->{connect_w}; 98 delete $self->{connect_w};
92 delete $self->{connect_to}; 99 delete $self->{connect_to};
93 100
94 $self->{transport} = $transport; 101 $self->{transport} = $transport;
95 102
96 my $transport_send = $transport->can ("send"); 103 my $transport_send = $transport->can ("send");
97 104
105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
106
98 $self->{send} = sub { 107 $self->{send} = sub {
99 $transport_send->($transport, $_[0]); 108 $transport_send->($transport, $_[0]);
100 }; 109 };
101 110
102 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
103
104 $transport->send ($_) 111 $transport->send ($_)
105 for @{ delete $self->{queue} || [] }; 112 for @{ delete $self->{queue} || [] };
106} 113}
107 114
108sub connect { 115sub connect {
109 my ($self) = @_; 116 my ($self, @addresses) = @_;
110 117
111 return if $self->{transport}; 118 return if $self->{transport};
112 119
113 # just ignore connect requests for slave nodes - let's hope it connects to us instead
114 return if $self->{noderef} =~ /^slave\//;
115
116 Scalar::Util::weaken $self; 120 Scalar::Util::weaken $self;
117 121
122 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
123
118 $self->{connect_to} ||= AE::timer 124 $self->{connect_to} ||= AE::timer $monitor, 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"); 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} },
123 }; 164 };
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 } 165 };
150} 166}
151 167
152sub kill { 168sub kill {
153 my ($self, $port, @reason) = @_; 169 my ($self, $port, @reason) = @_;
154 170
… …
191 207
192sub connect { 208sub connect {
193 # we are trivially connected 209 # we are trivially connected
194} 210}
195 211
212# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY = -50;
214our @DELAY;
215our $DELAY_W;
216
217sub _send_delayed {
218 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
219 (shift @DELAY)->()
220 while @DELAY;
221 undef $DELAY_W;
222 $DELAY = -50;
223}
224
196sub transport_reset { 225sub transport_reset {
197 my ($self) = @_; 226 my ($self) = @_;
198 227
199 Scalar::Util::weaken $self; 228 Scalar::Util::weaken $self;
200 229
201 $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
202 local $AnyEvent::MP::Kernel::SRCNODE = $self; 238 local $AnyEvent::MP::Kernel::SRCNODE = $self;
203 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204 }; 240 };
205} 241}
206 242
243sub transport_connect {
244 my ($self, $tp) = @_;
245
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
247}
248
207sub kill { 249sub kill {
208 my ($self, $port, @reason) = @_; 250 my (undef, @args) = @_;
209 251
210 delete $AnyEvent::MP::Kernel::PORT{$port}; 252 # we _always_ delay kil's, to avoid calling mon callbacks
211 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 253 # from anything but the event loop context.
212 254 $DELAY = 1;
213 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 255 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
214 or !@reason 256 $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} 257}
219 258
220sub monitor { 259sub monitor {
221 my ($self, $portid, $cb) = @_; 260 # maybe always delay, too?
222 261 if ($DELAY_W) {
223 return $cb->(no_such_port => "cannot monitor nonexistent port") 262 my @args = @_;
224 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 263 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
225 264 return;
226 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 265 }
266 &AnyEvent::MP::Kernel::_monitor;
227} 267}
228 268
229sub unmonitor { 269sub unmonitor {
230 my ($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 }
231 276
232 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 277 &AnyEvent::MP::Kernel::_unmonitor;
233} 278}
234 279
235=head1 SEE ALSO 280=head1 SEE ALSO
236 281
237L<AnyEvent::MP>. 282L<AnyEvent::MP>.

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