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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::; |
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23 | |
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24 | our $VERSION = '0.0'; |
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25 | |
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26 | sub new { |
23 | sub new { |
27 | my ($class, $noderef) = @_; |
24 | my ($self, $noderef) = @_; |
28 | |
25 | |
29 | bless { noderef => $noderef }, $class |
26 | $self = bless { noderef => $noderef }, $self; |
30 | } |
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31 | |
27 | |
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28 | $self->transport_reset; |
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29 | |
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30 | $self |
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31 | } |
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32 | |
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33 | sub send { |
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34 | &{ shift->{send} } |
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35 | } |
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36 | |
32 | package AnyEvent::MP::Node::Direct; |
37 | package AnyEvent::MP::Node::External; |
33 | |
38 | |
34 | use base "AnyEvent::MP::Node"; |
39 | use base "AnyEvent::MP::Node"; |
35 | |
40 | |
36 | sub send { |
41 | # called at init time, mostly sets {send} |
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42 | sub transport_reset { |
37 | my ($self, $msg) = @_; |
43 | my ($self) = @_; |
38 | |
44 | |
39 | if ($self->{transport}) { |
45 | delete $self->{transport}; |
40 | $self->{transport}->send ($msg); |
46 | |
41 | } elsif ($self->{queue}) { |
47 | Scalar::Util::weaken $self; |
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48 | |
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49 | $self->{send} = sub { |
42 | push @{ $self->{queue} }, $msg; |
50 | push @{$self->{queue}}, shift; |
43 | } else { |
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44 | $self->{queue} = [$msg]; |
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45 | $self->connect; |
51 | $self->connect; |
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52 | }; |
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53 | } |
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54 | |
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55 | # called only after successful handshake |
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56 | sub transport_error { |
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57 | my ($self, @reason) = @_; |
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58 | |
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59 | $self->{transport} |
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60 | or return; |
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61 | |
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62 | delete $self->{queue}; |
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63 | $self->transport_reset; |
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64 | |
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65 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason); |
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66 | |
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67 | if (my $mon = delete $self->{lmon}) { |
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68 | $_->(@reason) for map @$_, values %$mon; |
46 | } |
69 | } |
47 | } |
70 | } |
48 | |
71 | |
49 | sub set_transport { |
72 | # called after handshake was successful |
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73 | sub transport_connect { |
50 | my ($self, $transport) = @_; |
74 | my ($self, $transport) = @_; |
51 | |
75 | |
52 | delete $self->{trial}; |
76 | $self->transport_error (transport_error => "switched connections") |
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77 | if $self->{transport}; |
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78 | |
53 | delete $self->{next_connect}; |
79 | delete $self->{connect_w}; |
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80 | delete $self->{connect_to}; |
54 | |
81 | |
55 | if ( |
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56 | exists $self->{remote_uniq} |
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57 | && $self->{remote_uniq} ne $transport->{remote_uniq} |
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58 | ) { |
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59 | # uniq changed, drop queue |
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60 | delete $self->{queue}; |
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61 | #TODO: "DOWN" |
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62 | } |
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63 | |
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64 | $self->{remote_uniq} = $transport->{remote_uniq}; |
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65 | $self->{transport} = $transport; |
82 | $self->{transport} = $transport; |
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83 | |
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84 | my $transport_send = $transport->can ("send"); |
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85 | |
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86 | $self->{send} = sub { |
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87 | $transport_send->($transport, $_[0]); |
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88 | }; |
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89 | |
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90 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
66 | |
91 | |
67 | $transport->send ($_) |
92 | $transport->send ($_) |
68 | for @{ delete $self->{queue} || [] }; |
93 | for @{ delete $self->{queue} || [] }; |
69 | } |
94 | } |
70 | |
95 | |
71 | sub clr_transport { |
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72 | my ($self) = @_; |
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73 | |
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74 | delete $self->{transport}; |
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75 | |
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76 | $self->connect; |
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77 | } |
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78 | |
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79 | sub connect { |
96 | sub connect { |
80 | my ($self) = @_; |
97 | my ($self) = @_; |
81 | |
98 | |
82 | Scalar::Util::weaken $self; |
99 | Scalar::Util::weaken $self; |
83 | |
100 | |
84 | unless (exists $self->{n_noderef}) { |
101 | $self->{connect_to} ||= AE::timer |
85 | (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { |
102 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
86 | $self or return; |
103 | 0, |
87 | my $noderef = shift->recv; |
104 | sub { |
88 | |
105 | $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); |
89 | $self->{n_noderef} = $noderef; |
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90 | |
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91 | $AnyEvent::MP::NODE{$_} = $self |
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92 | for split /,/, $noderef; |
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93 | |
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94 | $self->connect; |
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95 | }); |
106 | }; |
96 | return; |
107 | |
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108 | unless ($self->{connect_w}) { |
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109 | my @endpoints; |
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110 | my %trial; |
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111 | |
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112 | $self->{connect_w} = AE::timer |
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113 | 0, |
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114 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
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115 | sub { |
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116 | @endpoints = split /,/, $self->{noderef} |
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117 | unless @endpoints; |
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118 | |
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119 | my $endpoint = shift @endpoints; |
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120 | |
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121 | $trial{$endpoint} ||= do { |
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122 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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123 | or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference."); |
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124 | |
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125 | AnyEvent::MP::Transport::mp_connect |
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126 | $host, $port, |
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127 | sub { delete $trial{$endpoint} } |
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128 | ; |
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129 | }; |
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130 | } |
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131 | ; |
97 | } |
132 | } |
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133 | } |
98 | |
134 | |
99 | $self->{retry} ||= [split /,/, $self->{n_noderef}]; |
135 | sub kill { |
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136 | my ($self, $port, @reason) = @_; |
100 | |
137 | |
101 | my $endpoint = shift @{ $self->{retry} }; |
138 | $self->send (["", kil => $port, @reason]); |
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139 | } |
102 | |
140 | |
103 | if (defined $endpoint) { |
141 | sub monitor { |
104 | $self->{trial}{$endpoint} ||= do { |
142 | my ($self, $portid, $cb) = @_; |
105 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
143 | |
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144 | my $list = $self->{lmon}{$portid} ||= []; |
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145 | |
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146 | $self->send (["", mon1 => $portid]) |
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147 | unless @$list; |
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148 | |
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149 | push @$list, $cb; |
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150 | } |
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151 | |
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152 | sub unmonitor { |
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153 | my ($self, $portid, $cb) = @_; |
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154 | |
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155 | my $list = $self->{lmon}{$portid} |
106 | or return; |
156 | or return; |
107 | |
157 | |
108 | my ($w, $g); |
158 | @$list = grep $_ != $cb, @$list; |
109 | |
159 | |
110 | $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub { |
160 | unless (@$list) { |
111 | delete $self->{trial}{$endpoint}; |
161 | $self->send (["", mon0 => $portid]); |
112 | }; |
162 | delete $self->{monitor}{$portid}; |
113 | $g = AnyEvent::MP::Transport::mp_connect |
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114 | $host, $port, |
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115 | sub { |
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116 | delete $self->{trial}{$endpoint} |
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117 | unless @_; |
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118 | $g = shift; |
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119 | }; |
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120 | ; |
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121 | |
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122 | [$w, \$g] |
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123 | }; |
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124 | } else { |
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125 | delete $self->{retry}; |
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126 | } |
163 | } |
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164 | } |
127 | |
165 | |
128 | $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { |
166 | package AnyEvent::MP::Node::Direct; |
129 | $self->connect; |
167 | |
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168 | use base "AnyEvent::MP::Node::External"; |
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169 | |
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170 | package AnyEvent::MP::Node::Indirect; |
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171 | |
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172 | use base "AnyEvent::MP::Node::Direct"; |
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173 | |
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174 | sub connect { |
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175 | my ($self) = @_; |
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176 | |
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177 | $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node"); |
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178 | } |
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179 | |
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180 | package AnyEvent::MP::Node::Self; |
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181 | |
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182 | use base "AnyEvent::MP::Node"; |
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183 | |
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184 | sub connect { |
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185 | # we are trivially connected |
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186 | } |
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187 | |
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188 | sub transport_reset { |
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189 | my ($self) = @_; |
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190 | |
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191 | Scalar::Util::weaken $self; |
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192 | |
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193 | $self->{send} = sub { |
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194 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
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195 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
130 | }; |
196 | }; |
131 | } |
197 | } |
132 | |
198 | |
133 | package AnyEvent::MP::Node::Self; |
199 | sub kill { |
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200 | my ($self, $port, @reason) = @_; |
134 | |
201 | |
135 | use base "AnyEvent::MP::Node"; |
202 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
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203 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
136 | |
204 | |
137 | sub set_transport { |
205 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
138 | die "FATAL error, set_transport was called"; |
206 | or !@reason |
139 | } |
207 | or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason"); |
140 | |
208 | |
141 | sub send { |
209 | $_->(@reason) for values %$mon; |
142 | AnyEvent::MP::_inject ($_[1]); |
210 | } |
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211 | |
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212 | sub monitor { |
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213 | my ($self, $portid, $cb) = @_; |
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214 | |
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215 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
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216 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
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217 | |
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218 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
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219 | } |
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220 | |
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221 | sub unmonitor { |
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222 | my ($self, $portid, $cb) = @_; |
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223 | |
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224 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
143 | } |
225 | } |
144 | |
226 | |
145 | =head1 SEE ALSO |
227 | =head1 SEE ALSO |
146 | |
228 | |
147 | L<AnyEvent>. |
229 | L<AnyEvent::MP>. |
148 | |
230 | |
149 | =head1 AUTHOR |
231 | =head1 AUTHOR |
150 | |
232 | |
151 | Marc Lehmann <schmorp@schmorp.de> |
233 | Marc Lehmann <schmorp@schmorp.de> |
152 | http://home.schmorp.de/ |
234 | http://home.schmorp.de/ |