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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->init; |
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29 | $self->transport_reset; |
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30 | |
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31 | $self |
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32 | } |
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33 | |
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34 | sub init { |
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35 | # |
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36 | } |
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37 | |
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38 | sub send { |
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39 | &{ shift->{send} } |
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40 | } |
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41 | |
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42 | # nodes reachable via the network |
32 | package AnyEvent::MP::Node::Direct; |
43 | package AnyEvent::MP::Node::External; |
33 | |
44 | |
34 | use base "AnyEvent::MP::Node"; |
45 | use base "AnyEvent::MP::Node"; |
35 | |
46 | |
36 | sub send { |
47 | # called at init time, mostly sets {send} |
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48 | sub transport_reset { |
37 | my ($self, $msg) = @_; |
49 | my ($self) = @_; |
38 | |
50 | |
39 | if ($self->{transport}) { |
51 | delete $self->{transport}; |
40 | $self->{transport}->send ($msg); |
52 | |
41 | } elsif ($self->{queue}) { |
53 | Scalar::Util::weaken $self; |
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54 | |
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55 | $self->{send} = sub { |
42 | push @{ $self->{queue} }, $msg; |
56 | push @{$self->{queue}}, shift; |
43 | } else { |
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44 | $self->{queue} = [$msg]; |
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45 | $self->connect; |
57 | $self->connect; |
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58 | }; |
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59 | |
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60 | $self->connect |
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61 | if $self->{autoconnect}; |
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62 | } |
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63 | |
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64 | # called only after successful handshake |
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65 | sub transport_error { |
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66 | my ($self, @reason) = @_; |
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67 | |
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68 | my $no_transport = !$self->{transport}; |
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69 | |
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70 | delete $self->{connect_w}; |
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71 | delete $self->{connect_to}; |
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72 | |
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73 | delete $self->{queue}; |
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74 | $self->transport_reset; |
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75 | |
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76 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
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77 | unless $no_transport; |
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78 | |
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79 | if (my $mon = delete $self->{lmon}) { |
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80 | $_->(@reason) for map @$_, values %$mon; |
46 | } |
81 | } |
47 | } |
82 | } |
48 | |
83 | |
49 | sub set_transport { |
84 | # called after handshake was successful |
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85 | sub transport_connect { |
50 | my ($self, $transport) = @_; |
86 | my ($self, $transport) = @_; |
51 | |
87 | |
52 | delete $self->{trial}; |
88 | $self->transport_error (transport_error => "switched connections") |
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89 | if $self->{transport}; |
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90 | |
53 | delete $self->{next_connect}; |
91 | delete $self->{connect_w}; |
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92 | delete $self->{connect_to}; |
54 | |
93 | |
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; |
94 | $self->{transport} = $transport; |
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95 | |
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96 | my $transport_send = $transport->can ("send"); |
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97 | |
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98 | $self->{send} = sub { |
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99 | $transport_send->($transport, $_[0]); |
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100 | }; |
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101 | |
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102 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
66 | |
103 | |
67 | $transport->send ($_) |
104 | $transport->send ($_) |
68 | for @{ delete $self->{queue} || [] }; |
105 | for @{ delete $self->{queue} || [] }; |
69 | } |
106 | } |
70 | |
107 | |
71 | sub clr_transport { |
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72 | my ($self) = @_; |
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73 | |
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74 | delete $self->{transport}; |
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75 | warn "clr_transport\n"; |
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76 | } |
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77 | |
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78 | sub connect { |
108 | sub connect { |
79 | my ($self) = @_; |
109 | my ($self) = @_; |
80 | |
110 | |
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111 | return if $self->{transport}; |
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112 | |
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113 | # just ignore connect requests for slave nodes - let's hope it connects to us instead |
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114 | return if $self->{noderef} =~ /^slave\//; |
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115 | |
81 | Scalar::Util::weaken $self; |
116 | Scalar::Util::weaken $self; |
82 | |
117 | |
83 | unless (exists $self->{n_noderef}) { |
118 | $self->{connect_to} ||= AE::timer |
84 | (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { |
119 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
85 | $self or return; |
120 | 0, |
86 | my $noderef = shift->recv; |
121 | sub { |
87 | |
122 | $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); |
88 | $self->{n_noderef} = $noderef; |
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89 | |
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90 | $AnyEvent::MP::NODE{$_} = $self |
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91 | for split /,/, $noderef; |
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92 | |
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93 | $self->connect; |
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94 | }); |
123 | }; |
95 | return; |
124 | |
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125 | unless ($self->{connect_w}) { |
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126 | my @endpoints; |
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127 | my %trial; |
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128 | |
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129 | $self->{connect_w} = AE::timer |
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130 | rand, |
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131 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
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132 | sub { |
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133 | @endpoints = split /,/, $self->{noderef} |
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134 | unless @endpoints; |
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135 | |
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136 | my $endpoint = shift @endpoints; |
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137 | |
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138 | $trial{$endpoint} ||= do { |
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139 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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140 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{noderef}: not a resolved node reference."); |
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141 | |
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142 | AnyEvent::MP::Transport::mp_connect |
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143 | $host, $port, |
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144 | sub { delete $trial{$endpoint} } |
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145 | ; |
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146 | }; |
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147 | } |
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148 | ; |
96 | } |
149 | } |
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150 | } |
97 | |
151 | |
98 | $self->{retry} ||= [split /,/, $self->{n_noderef}]; |
152 | sub kill { |
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153 | my ($self, $port, @reason) = @_; |
99 | |
154 | |
100 | my $endpoint = shift @{ $self->{retry} }; |
155 | $self->send (["", kil => $port, @reason]); |
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156 | } |
101 | |
157 | |
102 | if (defined $endpoint) { |
158 | sub monitor { |
103 | $self->{trial}{$endpoint} ||= do { |
159 | my ($self, $portid, $cb) = @_; |
104 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
160 | |
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161 | my $list = $self->{lmon}{$portid} ||= []; |
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162 | |
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163 | $self->send (["", mon1 => $portid]) |
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164 | unless @$list || !length $portid; |
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165 | |
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166 | push @$list, $cb; |
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167 | } |
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168 | |
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169 | sub unmonitor { |
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170 | my ($self, $portid, $cb) = @_; |
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171 | |
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172 | my $list = $self->{lmon}{$portid} |
105 | or return; |
173 | or return; |
106 | |
174 | |
107 | my ($w, $g); |
175 | @$list = grep $_ != $cb, @$list; |
108 | |
176 | |
109 | $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub { |
177 | unless (@$list) { |
110 | delete $self->{trial}{$endpoint}; |
178 | $self->send (["", mon0 => $portid]); |
111 | }; |
179 | delete $self->{monitor}{$portid}; |
112 | $g = AnyEvent::MP::Transport::mp_connect |
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113 | $host, $port, |
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114 | sub { |
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115 | delete $self->{trial}{$endpoint} |
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116 | unless @_; |
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117 | $g = shift; |
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118 | }; |
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119 | ; |
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120 | |
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121 | [$w, \$g] |
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122 | }; |
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123 | } else { |
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124 | delete $self->{retry}; |
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125 | } |
180 | } |
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181 | } |
126 | |
182 | |
127 | $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { |
183 | # used for direct slave connections as well |
128 | $self->connect; |
184 | package AnyEvent::MP::Node::Direct; |
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185 | |
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186 | use base "AnyEvent::MP::Node::External"; |
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187 | |
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188 | package AnyEvent::MP::Node::Self; |
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189 | |
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190 | use base "AnyEvent::MP::Node"; |
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191 | |
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192 | sub connect { |
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193 | # we are trivially connected |
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194 | } |
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195 | |
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196 | sub transport_reset { |
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197 | my ($self) = @_; |
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198 | |
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199 | Scalar::Util::weaken $self; |
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200 | |
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201 | $self->{send} = sub { |
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202 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
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203 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
129 | }; |
204 | }; |
130 | } |
205 | } |
131 | |
206 | |
132 | package AnyEvent::MP::Node::Self; |
207 | sub kill { |
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208 | my ($self, $port, @reason) = @_; |
133 | |
209 | |
134 | use base "AnyEvent::MP::Node"; |
210 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
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211 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
135 | |
212 | |
136 | sub set_transport { |
213 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
137 | die "FATAL error, set_transport was called"; |
214 | or !@reason |
138 | } |
215 | or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); |
139 | |
216 | |
140 | sub send { |
217 | $_->(@reason) for values %$mon; |
141 | die "self-send not implemented yet\n";#d# |
218 | } |
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219 | |
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220 | sub monitor { |
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221 | my ($self, $portid, $cb) = @_; |
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222 | |
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223 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
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224 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
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225 | |
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226 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
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227 | } |
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228 | |
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229 | sub unmonitor { |
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230 | my ($self, $portid, $cb) = @_; |
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231 | |
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232 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
142 | } |
233 | } |
143 | |
234 | |
144 | =head1 SEE ALSO |
235 | =head1 SEE ALSO |
145 | |
236 | |
146 | L<AnyEvent>. |
237 | L<AnyEvent::MP>. |
147 | |
238 | |
148 | =head1 AUTHOR |
239 | =head1 AUTHOR |
149 | |
240 | |
150 | Marc Lehmann <schmorp@schmorp.de> |
241 | Marc Lehmann <schmorp@schmorp.de> |
151 | http://home.schmorp.de/ |
242 | http://home.schmorp.de/ |