1 |
=head1 NAME |
2 |
|
3 |
AnyEvent::MP::Node - a single processing node (CPU/process...) |
4 |
|
5 |
=head1 SYNOPSIS |
6 |
|
7 |
use AnyEvent::MP::Node; |
8 |
|
9 |
=head1 DESCRIPTION |
10 |
|
11 |
=cut |
12 |
|
13 |
package AnyEvent::MP::Node; |
14 |
|
15 |
use common::sense; |
16 |
|
17 |
use AE (); |
18 |
use AnyEvent::Util (); |
19 |
use AnyEvent::Socket (); |
20 |
|
21 |
use AnyEvent::MP::Transport (); |
22 |
|
23 |
sub new { |
24 |
my ($class, $noderef) = @_; |
25 |
|
26 |
bless { noderef => $noderef }, $class |
27 |
} |
28 |
|
29 |
package AnyEvent::MP::Node::Direct; |
30 |
|
31 |
use base "AnyEvent::MP::Node"; |
32 |
|
33 |
sub send { |
34 |
my ($self, $msg) = @_; |
35 |
|
36 |
if ($self->{transport}) { |
37 |
$self->{transport}->send ($msg); |
38 |
} elsif ($self->{queue}) { |
39 |
push @{ $self->{queue} }, $msg; |
40 |
} else { |
41 |
$self->{queue} = [$msg]; |
42 |
$self->connect; |
43 |
} |
44 |
} |
45 |
|
46 |
sub kill { |
47 |
my ($self, $port, @reason) = @_; |
48 |
|
49 |
$self->send (["", kil => $port, @reason]); |
50 |
} |
51 |
|
52 |
sub monitor { |
53 |
my ($self, $portid, $cb) = @_; |
54 |
|
55 |
my $list = $self->{lmon}{$portid} ||= []; |
56 |
|
57 |
$self->send (["", mon1 => $portid]) |
58 |
unless @$list; |
59 |
|
60 |
push @$list, $cb; |
61 |
} |
62 |
|
63 |
sub unmonitor { |
64 |
my ($self, $portid, $cb) = @_; |
65 |
|
66 |
my $list = $self->{lmon}{$portid} |
67 |
or return; |
68 |
|
69 |
@$list = grep $_ != $cb, @$list; |
70 |
|
71 |
unless (@$list) { |
72 |
$self->send (["", mon0 => $portid]); |
73 |
delete $self->{monitor}{$portid}; |
74 |
} |
75 |
} |
76 |
|
77 |
sub set_transport { |
78 |
my ($self, $transport) = @_; |
79 |
|
80 |
$self->clr_transport |
81 |
if $self->{transport}; |
82 |
|
83 |
delete $self->{trial}; |
84 |
delete $self->{retry}; |
85 |
delete $self->{next_connect}; |
86 |
|
87 |
$self->{transport} = $transport; |
88 |
|
89 |
$transport->send ($_) |
90 |
for @{ delete $self->{queue} || [] }; |
91 |
} |
92 |
|
93 |
sub fail { |
94 |
my ($self, @reason) = @_; |
95 |
|
96 |
delete $self->{queue}; |
97 |
|
98 |
if (my $mon = delete $self->{lmon}) { |
99 |
$_->(@reason) for map @$_, values %$mon; |
100 |
} |
101 |
} |
102 |
|
103 |
sub clr_transport { |
104 |
my ($self, @reason) = @_; |
105 |
|
106 |
delete $self->{transport}; |
107 |
$self->connect; |
108 |
} |
109 |
|
110 |
sub connect { |
111 |
my ($self) = @_; |
112 |
|
113 |
Scalar::Util::weaken $self; |
114 |
|
115 |
$self->{retry} ||= [split /,/, $self->{noderef}]; |
116 |
|
117 |
my $endpoint = shift @{ $self->{retry} }; |
118 |
|
119 |
if (defined $endpoint) { |
120 |
$self->{trial}{$endpoint} ||= do { |
121 |
my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
122 |
or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference."); |
123 |
|
124 |
my ($w, $g); |
125 |
|
126 |
$w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub { |
127 |
delete $self->{trial}{$endpoint}; |
128 |
}; |
129 |
$g = AnyEvent::MP::Transport::mp_connect |
130 |
$host, $port, |
131 |
sub { |
132 |
delete $self->{trial}{$endpoint} |
133 |
unless @_; |
134 |
$g = shift; |
135 |
}; |
136 |
; |
137 |
|
138 |
[$w, \$g] |
139 |
}; |
140 |
} else { |
141 |
$self->fail (transport_error => $self->{noderef}, "unable to connect"); |
142 |
} |
143 |
|
144 |
$self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { |
145 |
delete $self->{retry}; |
146 |
$self->connect; |
147 |
}; |
148 |
} |
149 |
|
150 |
package AnyEvent::MP::Node::Slave; |
151 |
|
152 |
use base "AnyEvent::MP::Node::Direct"; |
153 |
|
154 |
sub connect { |
155 |
my ($self) = @_; |
156 |
|
157 |
$self->fail (transport_error => $self->{noderef}, "unable to connect to slave node"); |
158 |
} |
159 |
|
160 |
package AnyEvent::MP::Node::Self; |
161 |
|
162 |
use base "AnyEvent::MP::Node"; |
163 |
|
164 |
sub set_transport { |
165 |
Carp::confess "FATAL error, set_transport was called on local node"; |
166 |
} |
167 |
|
168 |
sub send { |
169 |
local $AnyEvent::MP::Base::SRCNODE = $_[0]; |
170 |
AnyEvent::MP::Base::_inject (@{ $_[1] }); |
171 |
} |
172 |
|
173 |
sub kill { |
174 |
my ($self, $port, @reason) = @_; |
175 |
|
176 |
delete $AnyEvent::MP::Base::PORT{$port}; |
177 |
delete $AnyEvent::MP::Base::PORT_DATA{$port}; |
178 |
|
179 |
my $mon = delete $AnyEvent::MP::Base::LMON{$port} |
180 |
or !@reason |
181 |
or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason"); |
182 |
|
183 |
$_->(@reason) for values %$mon; |
184 |
} |
185 |
|
186 |
sub monitor { |
187 |
my ($self, $portid, $cb) = @_; |
188 |
|
189 |
return $cb->(no_such_port => "cannot monitor nonexistent port") |
190 |
unless exists $AnyEvent::MP::Base::PORT{$portid}; |
191 |
|
192 |
$AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; |
193 |
} |
194 |
|
195 |
sub unmonitor { |
196 |
my ($self, $portid, $cb) = @_; |
197 |
|
198 |
delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; |
199 |
} |
200 |
|
201 |
=head1 SEE ALSO |
202 |
|
203 |
L<AnyEvent::MP>. |
204 |
|
205 |
=head1 AUTHOR |
206 |
|
207 |
Marc Lehmann <schmorp@schmorp.de> |
208 |
http://home.schmorp.de/ |
209 |
|
210 |
=cut |
211 |
|
212 |
1 |
213 |
|