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 {
   &{$_[0]->{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};

   $self->{send} = sub {
      push @{$_[0]{queue}}, $_[1];
      $_[0]->connect;
   };
}

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

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

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

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

   $self->transport_reset
      if $self->{transport};

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

   $self->{transport} = $transport;

   $self->{send} = sub {
      $transport->send ($_[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 transport_reset {
   my ($self) = @_;

   $self->{send} = sub {
      local $AnyEvent::MP::Kernel::SRCNODE = $_[0];
      AnyEvent::MP::Kernel::_inject (@{ $_[1] });
   };
}

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:	1.18
Committed:	Wed Aug 12 21:39:59 2009 UTC (14 years, 9 months ago) by root
Branch:	MAIN
Changes since 1.17:	+105 -96 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	=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	root	1.6	use AnyEvent::Util ();
19	root	1.1	use AnyEvent::Socket ();
20
21			use AnyEvent::MP::Transport ();
22
23			sub new {
24	root	1.18	my ($self, $noderef) = @_;
25	root	1.1
26	root	1.18	$self = bless { noderef => $noderef }, $self;
27	root	1.1
28	root	1.18	$self->transport_reset;
29	root	1.1
30	root	1.18	$self
31			}
32	root	1.1
33			sub send {
34	root	1.18	&{$_[0]->{send}}
35	root	1.1	}
36
37	root	1.18	package AnyEvent::MP::Node::External;
38	root	1.7
39	root	1.18	use base "AnyEvent::MP::Node";
40	root	1.7
41	root	1.18	# called at init time, mostly sets {send}
42			sub transport_reset {
43			my ($self) = @_;
44	root	1.6
45	root	1.18	delete $self->{transport};
46	root	1.6
47	root	1.18	$self->{send} = sub {
48			push @{$_[0]{queue}}, $_[1];
49			$_[0]->connect;
50			};
51	root	1.6	}
52
53	root	1.18	# called only after successful handshake
54			sub transport_error {
55			my ($self, @reason) = @_;
56	root	1.6
57	root	1.18	delete $self->{queue};
58			$self->transport_reset;
59	root	1.6
60	root	1.18	if (my $mon = delete $self->{lmon}) {
61			$_->(@reason) for map @$_, values %$mon;
62	root	1.6	}
63			}
64
65	root	1.18	# called after handshake was successful
66			sub transport_connect {
67	root	1.1	my ($self, $transport) = @_;
68
69	root	1.18	$self->transport_reset
70	root	1.6	if $self->{transport};
71
72	root	1.18	delete $self->{connect_w};
73			delete $self->{connect_to};
74	root	1.8
75	root	1.15	$self->{transport} = $transport;
76	root	1.1
77	root	1.18	$self->{send} = sub {
78			$transport->send ($_[1]);
79			};
80
81	root	1.1	$transport->send ($_)
82			for @{ delete $self->{queue} \|\| [] };
83			}
84
85	root	1.18	sub connect {
86			my ($self) = @_;
87
88			Scalar::Util::weaken $self;
89	root	1.8
90	root	1.18	$self->{connect_to} \|\|= AE::timer
91			$AnyEvent::MP::Config::CFG{monitor_timeout} \|\| $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
92			0,
93			sub {
94			$self->transport_error (transport_error => $self->{noderef}, "unable to connect");
95			};
96	root	1.1
97	root	1.18	unless ($self->{connect_w}) {
98			my @endpoints;
99			my %trial;
100
101			$self->{connect_w} = AE::timer
102			0,
103			$AnyEvent::MP::Config::CFG{connect_interval} \|\| $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
104			sub {
105			@endpoints = split /,/, $self->{noderef}
106			unless @endpoints;
107
108			my $endpoint = shift @endpoints;
109
110			$trial{$endpoint} \|\|= do {
111			my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
112			or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
113
114			AnyEvent::MP::Transport::mp_connect
115			$host, $port,
116			sub { delete $trial{$endpoint} }
117			;
118			};
119			}
120			;
121	root	1.6	}
122	root	1.8	}
123
124	root	1.18	sub kill {
125			my ($self, $port, @reason) = @_;
126	root	1.4
127	root	1.18	$self->send (["", kil => $port, @reason]);
128	root	1.1	}
129
130	root	1.18	sub monitor {
131			my ($self, $portid, $cb) = @_;
132
133			my $list = $self->{lmon}{$portid} \|\|= [];
134
135			$self->send (["", mon1 => $portid])
136			unless @$list;
137	root	1.1
138	root	1.18	push @$list, $cb;
139			}
140	root	1.1
141	root	1.18	sub unmonitor {
142			my ($self, $portid, $cb) = @_;
143	root	1.1
144	root	1.18	my $list = $self->{lmon}{$portid}
145			or return;
146	root	1.1
147	root	1.18	@$list = grep $_ != $cb, @$list;
148	root	1.1
149	root	1.18	unless (@$list) {
150			$self->send (["", mon0 => $portid]);
151			delete $self->{monitor}{$portid};
152	root	1.1	}
153	root	1.18	}
154	root	1.1
155	root	1.18	package AnyEvent::MP::Node::Direct;
156
157			use base "AnyEvent::MP::Node::External";
158	root	1.1
159	root	1.18	package AnyEvent::MP::Node::Indirect;
160	root	1.13
161			use base "AnyEvent::MP::Node::Direct";
162
163			sub connect {
164			my ($self) = @_;
165
166	root	1.18	$self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
167	root	1.13	}
168
169	root	1.1	package AnyEvent::MP::Node::Self;
170
171			use base "AnyEvent::MP::Node";
172
173	root	1.18	sub transport_reset {
174			my ($self) = @_;
175	root	1.1
176	root	1.18	$self->{send} = sub {
177			local $AnyEvent::MP::Kernel::SRCNODE = $_[0];
178			AnyEvent::MP::Kernel::_inject (@{ $_[1] });
179			};
180	root	1.6	}
181
182	root	1.7	sub kill {
183			my ($self, $port, @reason) = @_;
184
185	root	1.18	delete $AnyEvent::MP::Kernel::PORT{$port};
186			delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
187	root	1.7
188	root	1.18	my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
189	root	1.8	or !@reason
190	root	1.18	or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
191	root	1.7
192			$_->(@reason) for values %$mon;
193			}
194
195	root	1.6	sub monitor {
196			my ($self, $portid, $cb) = @_;
197
198	root	1.14	return $cb->(no_such_port => "cannot monitor nonexistent port")
199	root	1.18	unless exists $AnyEvent::MP::Kernel::PORT{$portid};
200	root	1.6
201	root	1.18	$AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
202	root	1.6	}
203
204			sub unmonitor {
205			my ($self, $portid, $cb) = @_;
206
207	root	1.18	delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
208	root	1.1	}
209
210			=head1 SEE ALSO
211
212	root	1.17	L<AnyEvent::MP>.
213	root	1.1
214			=head1 AUTHOR
215
216			Marc Lehmann <schmorp@schmorp.de>
217			http://home.schmorp.de/
218
219			=cut
220
221			1
222