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) = @_;

   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;

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

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

   $transport->send ($_)
      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) = @_;

   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:	1.19
Committed:	Wed Aug 12 22:03:15 2009 UTC (14 years, 11 months ago) by root
Branch:	MAIN
Changes since 1.18:	+12 -6 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	$self
31			}
32	root	1.1
33			sub send {
34	root	1.19	&{ shift->{send} }
35	root	1.1	}
36
37	root	1.18	package AnyEvent::MP::Node::External;
38	root	1.7
39	root	1.18	use base "AnyEvent::MP::Node";
40	root	1.7
41	root	1.18	# called at init time, mostly sets {send}
42			sub transport_reset {
43			my ($self) = @_;
44	root	1.6
45	root	1.18	delete $self->{transport};
46	root	1.6
47	root	1.19	Scalar::Util::weaken $self;
48
49	root	1.18	$self->{send} = sub {
50	root	1.19	push @{$self->{queue}}, shift;
51			$self->connect;
52	root	1.18	};
53	root	1.6	}
54
55	root	1.18	# called only after successful handshake
56			sub transport_error {
57			my ($self, @reason) = @_;
58	root	1.6
59	root	1.18	delete $self->{queue};
60			$self->transport_reset;
61	root	1.6
62	root	1.18	if (my $mon = delete $self->{lmon}) {
63			$_->(@reason) for map @$_, values %$mon;
64	root	1.6	}
65			}
66
67	root	1.18	# called after handshake was successful
68			sub transport_connect {
69	root	1.1	my ($self, $transport) = @_;
70
71	root	1.18	$self->transport_reset
72	root	1.6	if $self->{transport};
73
74	root	1.18	delete $self->{connect_w};
75			delete $self->{connect_to};
76	root	1.8
77	root	1.15	$self->{transport} = $transport;
78	root	1.1
79	root	1.19	my $transport_send = $transport->can ("send");
80
81	root	1.18	$self->{send} = sub {
82	root	1.19	$transport_send->($transport, $_[0]);
83	root	1.18	};
84
85	root	1.1	$transport->send ($_)
86			for @{ delete $self->{queue} \|\| [] };
87			}
88
89	root	1.18	sub connect {
90			my ($self) = @_;
91
92			Scalar::Util::weaken $self;
93	root	1.8
94	root	1.18	$self->{connect_to} \|\|= AE::timer
95			$AnyEvent::MP::Config::CFG{monitor_timeout} \|\| $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
96			0,
97			sub {
98			$self->transport_error (transport_error => $self->{noderef}, "unable to connect");
99			};
100	root	1.1
101	root	1.18	unless ($self->{connect_w}) {
102			my @endpoints;
103			my %trial;
104
105			$self->{connect_w} = AE::timer
106			0,
107			$AnyEvent::MP::Config::CFG{connect_interval} \|\| $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
108			sub {
109			@endpoints = split /,/, $self->{noderef}
110			unless @endpoints;
111
112			my $endpoint = shift @endpoints;
113
114			$trial{$endpoint} \|\|= do {
115			my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
116			or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
117
118			AnyEvent::MP::Transport::mp_connect
119			$host, $port,
120			sub { delete $trial{$endpoint} }
121			;
122			};
123			}
124			;
125	root	1.6	}
126	root	1.8	}
127
128	root	1.18	sub kill {
129			my ($self, $port, @reason) = @_;
130	root	1.4
131	root	1.18	$self->send (["", kil => $port, @reason]);
132	root	1.1	}
133
134	root	1.18	sub monitor {
135			my ($self, $portid, $cb) = @_;
136
137			my $list = $self->{lmon}{$portid} \|\|= [];
138
139			$self->send (["", mon1 => $portid])
140			unless @$list;
141	root	1.1
142	root	1.18	push @$list, $cb;
143			}
144	root	1.1
145	root	1.18	sub unmonitor {
146			my ($self, $portid, $cb) = @_;
147	root	1.1
148	root	1.18	my $list = $self->{lmon}{$portid}
149			or return;
150	root	1.1
151	root	1.18	@$list = grep $_ != $cb, @$list;
152	root	1.1
153	root	1.18	unless (@$list) {
154			$self->send (["", mon0 => $portid]);
155			delete $self->{monitor}{$portid};
156	root	1.1	}
157	root	1.18	}
158	root	1.1
159	root	1.18	package AnyEvent::MP::Node::Direct;
160
161			use base "AnyEvent::MP::Node::External";
162	root	1.1
163	root	1.18	package AnyEvent::MP::Node::Indirect;
164	root	1.13
165			use base "AnyEvent::MP::Node::Direct";
166
167			sub connect {
168			my ($self) = @_;
169
170	root	1.18	$self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
171	root	1.13	}
172
173	root	1.1	package AnyEvent::MP::Node::Self;
174
175			use base "AnyEvent::MP::Node";
176
177	root	1.18	sub transport_reset {
178			my ($self) = @_;
179	root	1.1
180	root	1.19	Scalar::Util::weaken $self;
181
182	root	1.18	$self->{send} = sub {
183	root	1.19	local $AnyEvent::MP::Kernel::SRCNODE = $self;
184			AnyEvent::MP::Kernel::_inject (@{ $_[0] });
185	root	1.18	};
186	root	1.6	}
187
188	root	1.7	sub kill {
189			my ($self, $port, @reason) = @_;
190
191	root	1.18	delete $AnyEvent::MP::Kernel::PORT{$port};
192			delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
193	root	1.7
194	root	1.18	my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
195	root	1.8	or !@reason
196	root	1.18	or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
197	root	1.7
198			$_->(@reason) for values %$mon;
199			}
200
201	root	1.6	sub monitor {
202			my ($self, $portid, $cb) = @_;
203
204	root	1.14	return $cb->(no_such_port => "cannot monitor nonexistent port")
205	root	1.18	unless exists $AnyEvent::MP::Kernel::PORT{$portid};
206	root	1.6
207	root	1.18	$AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
208	root	1.6	}
209
210			sub unmonitor {
211			my ($self, $portid, $cb) = @_;
212
213	root	1.18	delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
214	root	1.1	}
215
216			=head1 SEE ALSO
217
218	root	1.17	L<AnyEvent::MP>.
219	root	1.1
220			=head1 AUTHOR
221
222			Marc Lehmann <schmorp@schmorp.de>
223			http://home.schmorp.de/
224
225			=cut
226
227			1
228