AnyEvent-MP/MP/Node.pm

=head1 NAME

AnyEvent::MP::Node - a single processing node (CPU/process...)

=head1 SYNOPSIS

   use AnyEvent::MP::Node;

=head1 DESCRIPTION

=cut

package AnyEvent::MP::Node;

use common::sense;

use AE ();
use AnyEvent::Util ();
use AnyEvent::Socket ();

use AnyEvent::MP::Transport ();

sub new {
   my ($self, $noderef) = @_;

   $self = bless { noderef => $noderef }, $self;

   $self->transport_reset;

   $self
}

sub send {
   &{ shift->{send} }
}

package AnyEvent::MP::Node::External;

use base "AnyEvent::MP::Node";

# called at init time, mostly sets {send}
sub transport_reset {
   my ($self) = @_;

   delete $self->{transport};

   Scalar::Util::weaken $self;

   $self->{send} = sub {
      push @{$self->{queue}}, shift;
      $self->connect;
   };
}

# called only after successful handshake
sub transport_error {
   my ($self, @reason) = @_;

   $self->{transport}
      or return;

   delete $self->{queue};
   $self->transport_reset;

   AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason);

   if (my $mon = delete $self->{lmon}) {
      $_->(@reason) for map @$_, values %$mon;
   }
}

# called after handshake was successful
sub transport_connect {
   my ($self, $transport) = @_;

   $self->transport_error (transport_error => "switched connections")
      if $self->{transport};

   delete $self->{connect_w};
   delete $self->{connect_to};

   $self->{transport} = $transport;

   my $transport_send = $transport->can ("send");

   $self->{send} = sub {
      $transport_send->($transport, $_[0]);
   };

   AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);

   $transport->send ($_)
      for @{ delete $self->{queue} || [] };
}

sub connect {
   my ($self) = @_;

   Scalar::Util::weaken $self;

   $self->{connect_to} ||= AE::timer
      $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
      0,
      sub {
         $self->transport_error (transport_error => $self->{noderef}, "unable to connect");
      };

   unless ($self->{connect_w}) {
      my @endpoints;
      my %trial;

      $self->{connect_w} = AE::timer
         0,
         $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
         sub {
            @endpoints = split /,/, $self->{noderef}
               unless @endpoints;

            my $endpoint = shift @endpoints;

            $trial{$endpoint} ||= do {
               my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
                  or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");

               AnyEvent::MP::Transport::mp_connect
                  $host, $port,
                  sub { delete $trial{$endpoint} }
               ;
            };
         }
      ;
   }
}

sub kill {
   my ($self, $port, @reason) = @_;

   $self->send (["", kil => $port, @reason]);
}

sub monitor {
   my ($self, $portid, $cb) = @_;

   my $list = $self->{lmon}{$portid} ||= [];

   $self->send (["", mon1 => $portid])
      unless @$list;

   push @$list, $cb;
}

sub unmonitor {
   my ($self, $portid, $cb) = @_;

   my $list = $self->{lmon}{$portid}
      or return;

   @$list = grep $_ != $cb, @$list;

   unless (@$list) {
      $self->send (["", mon0 => $portid]);
      delete $self->{monitor}{$portid};
   }
}

package AnyEvent::MP::Node::Direct;

use base "AnyEvent::MP::Node::External";

package AnyEvent::MP::Node::Indirect;

use base "AnyEvent::MP::Node::Direct";

sub connect {
   my ($self) = @_;

   $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
}

package AnyEvent::MP::Node::Self;

use base "AnyEvent::MP::Node";

sub connect {
   # we are trivially connected
}

sub transport_reset {
   my ($self) = @_;

   Scalar::Util::weaken $self;

   $self->{send} = sub {
      local $AnyEvent::MP::Kernel::SRCNODE = $self;
      AnyEvent::MP::Kernel::_inject (@{ $_[0] });
   };
}

sub kill {
   my ($self, $port, @reason) = @_;

   delete $AnyEvent::MP::Kernel::PORT{$port};
   delete $AnyEvent::MP::Kernel::PORT_DATA{$port};

   my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
      or !@reason
      or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");

   $_->(@reason) for values %$mon;
}

sub monitor {
   my ($self, $portid, $cb) = @_;

   return $cb->(no_such_port => "cannot monitor nonexistent port")
      unless exists $AnyEvent::MP::Kernel::PORT{$portid};

   $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
}

sub unmonitor {
   my ($self, $portid, $cb) = @_;

   delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
}

=head1 SEE ALSO

L<AnyEvent::MP>.

=head1 AUTHOR

 Marc Lehmann <schmorp@schmorp.de>
 http://home.schmorp.de/

=cut

1

Revision:	1.20
Committed:	Thu Aug 13 00:23:36 2009 UTC (14 years, 11 months ago) by root
Branch:	MAIN
Changes since 1.19:	+12 -1 lines
Log Message:	* empty log message *
#	Content
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 ($self, $noderef) = @_;
25
26	$self = bless { noderef => $noderef }, $self;
27
28	$self->transport_reset;
29
30	$self
31	}
32
33	sub send {
34	&{ shift->{send} }
35	}
36
37	package AnyEvent::MP::Node::External;
38
39	use base "AnyEvent::MP::Node";
40
41	# called at init time, mostly sets {send}
42	sub transport_reset {
43	my ($self) = @_;
44
45	delete $self->{transport};
46
47	Scalar::Util::weaken $self;
48
49	$self->{send} = sub {
50	push @{$self->{queue}}, shift;
51	$self->connect;
52	};
53	}
54
55	# called only after successful handshake
56	sub transport_error {
57	my ($self, @reason) = @_;
58
59	$self->{transport}
60	or return;
61
62	delete $self->{queue};
63	$self->transport_reset;
64
65	AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason);
66
67	if (my $mon = delete $self->{lmon}) {
68	$_->(@reason) for map @$_, values %$mon;
69	}
70	}
71
72	# called after handshake was successful
73	sub transport_connect {
74	my ($self, $transport) = @_;
75
76	$self->transport_error (transport_error => "switched connections")
77	if $self->{transport};
78
79	delete $self->{connect_w};
80	delete $self->{connect_to};
81
82	$self->{transport} = $transport;
83
84	my $transport_send = $transport->can ("send");
85
86	$self->{send} = sub {
87	$transport_send->($transport, $_[0]);
88	};
89
90	AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
91
92	$transport->send ($_)
93	for @{ delete $self->{queue} \|\| [] };
94	}
95
96	sub connect {
97	my ($self) = @_;
98
99	Scalar::Util::weaken $self;
100
101	$self->{connect_to} \|\|= AE::timer
102	$AnyEvent::MP::Config::CFG{monitor_timeout} \|\| $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
103	0,
104	sub {
105	$self->transport_error (transport_error => $self->{noderef}, "unable to connect");
106	};
107
108	unless ($self->{connect_w}) {
109	my @endpoints;
110	my %trial;
111
112	$self->{connect_w} = AE::timer
113	0,
114	$AnyEvent::MP::Config::CFG{connect_interval} \|\| $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
115	sub {
116	@endpoints = split /,/, $self->{noderef}
117	unless @endpoints;
118
119	my $endpoint = shift @endpoints;
120
121	$trial{$endpoint} \|\|= do {
122	my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
123	or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
124
125	AnyEvent::MP::Transport::mp_connect
126	$host, $port,
127	sub { delete $trial{$endpoint} }
128	;
129	};
130	}
131	;
132	}
133	}
134
135	sub kill {
136	my ($self, $port, @reason) = @_;
137
138	$self->send (["", kil => $port, @reason]);
139	}
140
141	sub monitor {
142	my ($self, $portid, $cb) = @_;
143
144	my $list = $self->{lmon}{$portid} \|\|= [];
145
146	$self->send (["", mon1 => $portid])
147	unless @$list;
148
149	push @$list, $cb;
150	}
151
152	sub unmonitor {
153	my ($self, $portid, $cb) = @_;
154
155	my $list = $self->{lmon}{$portid}
156	or return;
157
158	@$list = grep $_ != $cb, @$list;
159
160	unless (@$list) {
161	$self->send (["", mon0 => $portid]);
162	delete $self->{monitor}{$portid};
163	}
164	}
165
166	package AnyEvent::MP::Node::Direct;
167
168	use base "AnyEvent::MP::Node::External";
169
170	package AnyEvent::MP::Node::Indirect;
171
172	use base "AnyEvent::MP::Node::Direct";
173
174	sub connect {
175	my ($self) = @_;
176
177	$self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
178	}
179
180	package AnyEvent::MP::Node::Self;
181
182	use base "AnyEvent::MP::Node";
183
184	sub connect {
185	# we are trivially connected
186	}
187
188	sub transport_reset {
189	my ($self) = @_;
190
191	Scalar::Util::weaken $self;
192
193	$self->{send} = sub {
194	local $AnyEvent::MP::Kernel::SRCNODE = $self;
195	AnyEvent::MP::Kernel::_inject (@{ $_[0] });
196	};
197	}
198
199	sub kill {
200	my ($self, $port, @reason) = @_;
201
202	delete $AnyEvent::MP::Kernel::PORT{$port};
203	delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
204
205	my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
206	or !@reason
207	or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
208
209	$_->(@reason) for values %$mon;
210	}
211
212	sub monitor {
213	my ($self, $portid, $cb) = @_;
214
215	return $cb->(no_such_port => "cannot monitor nonexistent port")
216	unless exists $AnyEvent::MP::Kernel::PORT{$portid};
217
218	$AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
219	}
220
221	sub unmonitor {
222	my ($self, $portid, $cb) = @_;
223
224	delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
225	}
226
227	=head1 SEE ALSO
228
229	L<AnyEvent::MP>.
230
231	=head1 AUTHOR
232
233	Marc Lehmann <schmorp@schmorp.de>
234	http://home.schmorp.de/
235
236	=cut
237
238	1
239