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13 | package AnyEvent::MP::Node; |
13 | package AnyEvent::MP::Node; |
14 | |
14 | |
15 | use common::sense; |
15 | use common::sense; |
16 | |
16 | |
17 | use AE (); |
17 | use AE (); |
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18 | use AnyEvent::Util (); |
18 | use AnyEvent::Socket (); |
19 | use AnyEvent::Socket (); |
19 | |
20 | |
20 | use AnyEvent::MP::Transport (); |
21 | use AnyEvent::MP::Transport (); |
21 | |
22 | |
22 | use base Exporter::; |
23 | use base Exporter::; |
23 | |
24 | |
24 | our $VERSION = '0.0'; |
25 | our $VERSION = '0.0'; |
25 | |
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26 | our $DEFAULT_PORT = "4040"; |
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27 | |
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28 | sub normalise_noderef($) { |
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29 | my ($noderef) = @_; |
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30 | |
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31 | my $cv = AE::cv; |
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32 | my @res; |
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33 | |
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34 | $cv->begin (sub { |
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35 | my %seen; |
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36 | my @refs; |
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37 | for (sort { $a->[0] <=> $b->[0] } @res) { |
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38 | push @refs, $_->[1] unless $seen{$_->[1]}++ |
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39 | } |
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40 | shift->send (join ",", @refs); |
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41 | }); |
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42 | |
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43 | $noderef = $DEFAULT_PORT unless length $noderef; |
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44 | |
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45 | my $idx; |
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46 | for my $t (split /,/, $noderef) { |
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47 | my $pri = ++$idx; |
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48 | |
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49 | #TODO: this should be outside normalise_noderef and in become_public |
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50 | if ($t =~ /^\d*$/) { |
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51 | require POSIX; |
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52 | my $nodename = (POSIX::uname ())[1]; |
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53 | |
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54 | $cv->begin; |
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55 | AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub { |
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56 | for (@_) { |
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57 | my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; |
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58 | push @res, [ |
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59 | $pri += 1e-5, |
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60 | AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service |
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61 | ]; |
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62 | } |
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63 | $cv->end; |
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64 | }; |
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65 | |
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66 | # my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename; |
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67 | # |
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68 | # for (@ipv4) { |
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69 | # push @res, [ |
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70 | # $pri, |
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71 | # AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $_, $t || $DEFAULT_PORT, |
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72 | # ]; |
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73 | # } |
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74 | } else { |
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75 | my ($host, $port) = AnyEvent::Socket::parse_hostport $t, "aemp=$DEFAULT_PORT" |
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76 | or Carp::croak "$t: unparsable transport descriptor"; |
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77 | |
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78 | $cv->begin; |
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79 | AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub { |
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80 | for (@_) { |
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81 | my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; |
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82 | push @res, [ |
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83 | $pri += 1e-5, |
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84 | AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service |
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85 | ]; |
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86 | } |
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87 | $cv->end; |
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88 | } |
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89 | } |
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90 | } |
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91 | |
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92 | $cv->end; |
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93 | |
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94 | $cv |
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95 | } |
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96 | |
26 | |
97 | sub new { |
27 | sub new { |
98 | my ($class, $noderef) = @_; |
28 | my ($class, $noderef) = @_; |
99 | |
29 | |
100 | bless { noderef => $noderef }, $class |
30 | bless { noderef => $noderef }, $class |
… | |
… | |
115 | $self->{queue} = [$msg]; |
45 | $self->{queue} = [$msg]; |
116 | $self->connect; |
46 | $self->connect; |
117 | } |
47 | } |
118 | } |
48 | } |
119 | |
49 | |
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50 | sub kill { |
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51 | my ($self, $port, @reason) = @_; |
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52 | |
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53 | $self->send (["", kil => $port, @reason]); |
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54 | } |
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55 | |
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56 | sub monitor { |
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57 | my ($self, $portid, $cb) = @_; |
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58 | |
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59 | return $cb->(transport_error => "node unreachable") |
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60 | if $self->{failed}; |
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61 | |
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62 | my $list = $self->{lmon}{$portid} ||= []; |
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63 | |
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64 | $self->send (["", mon1 => $portid]) |
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65 | unless @$list; |
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66 | |
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67 | push @$list, $cb; |
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68 | } |
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69 | |
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70 | sub unmonitor { |
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71 | my ($self, $portid, $cb) = @_; |
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72 | |
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73 | my $list = $self->{lmon}{$portid} |
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74 | or return; |
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75 | |
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76 | @$list = grep $_ != $cb, @$list; |
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77 | |
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78 | unless (@$list) { |
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79 | $self->send (["", mon0 => $portid]); |
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80 | delete $self->{monitor}{$portid}; |
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81 | } |
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82 | } |
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83 | |
120 | sub set_transport { |
84 | sub set_transport { |
121 | my ($self, $transport) = @_; |
85 | my ($self, $transport) = @_; |
122 | |
86 | |
123 | delete $self->{trial}; |
87 | $self->clr_transport |
124 | delete $self->{next_connect}; |
88 | if $self->{transport}; |
125 | |
89 | |
126 | if ( |
90 | if ( |
127 | exists $self->{remote_uniq} |
91 | exists $self->{remote_uniq} |
128 | && $self->{remote_uniq} ne $transport->{remote_uniq} |
92 | && $self->{remote_uniq} ne $transport->{remote_uniq} |
129 | ) { |
93 | ) { |
130 | # uniq changed, drop queue |
94 | # uniq changed, different node |
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95 | $self->fail ("node restart detected"); |
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96 | } |
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97 | |
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98 | delete $self->{trial}; |
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99 | delete $self->{next_connect}; |
131 | delete $self->{queue}; |
100 | delete $self->{failed}; |
132 | #TODO: "DOWN" |
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133 | } |
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134 | |
101 | |
135 | $self->{remote_uniq} = $transport->{remote_uniq}; |
102 | $self->{remote_uniq} = $transport->{remote_uniq}; |
136 | $self->{transport} = $transport; |
103 | $self->{transport} = $transport; |
137 | |
104 | |
138 | $transport->send ($_) |
105 | $transport->send ($_) |
139 | for @{ delete $self->{queue} || [] }; |
106 | for @{ delete $self->{queue} || [] }; |
140 | } |
107 | } |
141 | |
108 | |
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109 | sub fail { |
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110 | my ($self, @reason) = @_; |
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111 | |
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112 | delete $self->{queue}; |
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113 | |
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114 | $self->{failed} = 1; |
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115 | |
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116 | if (my $mon = delete $self->{lmon}) { |
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117 | $_->(@reason) for map @$_, values %$mon; |
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118 | } |
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119 | } |
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120 | |
142 | sub clr_transport { |
121 | sub clr_transport { |
143 | my ($self) = @_; |
122 | my ($self, @reason) = @_; |
144 | |
123 | |
145 | delete $self->{transport}; |
124 | delete $self->{transport}; |
146 | |
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147 | $self->connect; |
125 | $self->connect; |
148 | } |
126 | } |
149 | |
127 | |
150 | sub connect { |
128 | sub connect { |
151 | my ($self) = @_; |
129 | my ($self) = @_; |
152 | |
130 | |
153 | Scalar::Util::weaken $self; |
131 | Scalar::Util::weaken $self; |
154 | |
132 | |
155 | unless (exists $self->{n_noderef}) { |
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156 | return if $self->{n_noderef_}++; |
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157 | (AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub { |
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158 | $self or return; |
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159 | delete $self->{n_noderef_}; |
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160 | my $noderef = shift->recv; |
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161 | |
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162 | $self->{n_noderef} = $noderef; |
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163 | |
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164 | $AnyEvent::MP::Base::NODE{$_} = $self |
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165 | for split /,/, $noderef; |
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166 | |
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167 | $self->connect; |
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168 | }); |
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169 | return; |
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170 | } |
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171 | |
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172 | $self->{retry} ||= [split /,/, $self->{n_noderef}]; |
133 | $self->{retry} ||= [split /,/, $self->{noderef}]; |
173 | |
134 | |
174 | my $endpoint = shift @{ $self->{retry} }; |
135 | my $endpoint = shift @{ $self->{retry} }; |
175 | |
136 | |
176 | if (defined $endpoint) { |
137 | if (defined $endpoint) { |
177 | $self->{trial}{$endpoint} ||= do { |
138 | $self->{trial}{$endpoint} ||= do { |
178 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
139 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
179 | or return; |
140 | or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference."); |
180 | |
141 | |
181 | my ($w, $g); |
142 | my ($w, $g); |
182 | |
143 | |
183 | $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub { |
144 | $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub { |
184 | delete $self->{trial}{$endpoint}; |
145 | delete $self->{trial}{$endpoint}; |
… | |
… | |
194 | |
155 | |
195 | [$w, \$g] |
156 | [$w, \$g] |
196 | }; |
157 | }; |
197 | } else { |
158 | } else { |
198 | delete $self->{retry}; |
159 | delete $self->{retry}; |
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160 | $self->fail (transport_error => $self->{noderef}, "unable to connect"); |
199 | } |
161 | } |
200 | |
162 | |
201 | $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { |
163 | $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { |
202 | $self->connect; |
164 | $self->connect; |
203 | }; |
165 | }; |
… | |
… | |
206 | package AnyEvent::MP::Node::Self; |
168 | package AnyEvent::MP::Node::Self; |
207 | |
169 | |
208 | use base "AnyEvent::MP::Node"; |
170 | use base "AnyEvent::MP::Node"; |
209 | |
171 | |
210 | sub set_transport { |
172 | sub set_transport { |
211 | die "FATAL error, set_transport was called"; |
173 | Carp::confess "FATAL error, set_transport was called on local node"; |
212 | } |
174 | } |
213 | |
175 | |
214 | sub send { |
176 | sub send { |
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177 | local $AnyEvent::MP::Base::SRCNODE = $_[0]; |
215 | AnyEvent::MP::Base::_inject ($_[1]); |
178 | AnyEvent::MP::Base::_inject (@{ $_[1] }); |
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179 | } |
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180 | |
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181 | sub kill { |
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182 | my ($self, $port, @reason) = @_; |
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183 | |
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184 | delete $AnyEvent::MP::Base::PORT{$port}; |
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185 | delete $AnyEvent::MP::Base::PORT_DATA{$port}; |
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186 | |
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187 | my $mon = delete $AnyEvent::MP::Base::LMON{$port} |
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188 | or !@reason |
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189 | or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason"); |
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190 | |
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191 | $_->(@reason) for values %$mon; |
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192 | } |
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193 | |
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194 | sub monitor { |
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195 | my ($self, $portid, $cb) = @_; |
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196 | |
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197 | return $cb->() |
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198 | unless exists $AnyEvent::MP::Base::PORT{$portid}; |
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199 | |
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200 | $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; |
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201 | } |
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202 | |
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203 | sub unmonitor { |
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204 | my ($self, $portid, $cb) = @_; |
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205 | |
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206 | delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; |
216 | } |
207 | } |
217 | |
208 | |
218 | =head1 SEE ALSO |
209 | =head1 SEE ALSO |
219 | |
210 | |
220 | L<AnyEvent>. |
211 | L<AnyEvent>. |