1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | AnyEvent::MP::Node - a single processing node (CPU/process...) |
3 | AnyEvent::MP::Node - represent a node |
4 | |
4 | |
5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | use AnyEvent::MP::Node; |
7 | use AnyEvent::MP::Node; |
8 | |
8 | |
9 | =head1 DESCRIPTION |
9 | =head1 DESCRIPTION |
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10 | |
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11 | This is an internal utility module, horrible to look at, so don't. |
10 | |
12 | |
11 | =cut |
13 | =cut |
12 | |
14 | |
13 | package AnyEvent::MP::Node; |
15 | package AnyEvent::MP::Node; |
14 | |
16 | |
… | |
… | |
18 | use AnyEvent::Util (); |
20 | use AnyEvent::Util (); |
19 | use AnyEvent::Socket (); |
21 | use AnyEvent::Socket (); |
20 | |
22 | |
21 | use AnyEvent::MP::Transport (); |
23 | use AnyEvent::MP::Transport (); |
22 | |
24 | |
23 | use base Exporter::; |
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24 | |
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25 | our $VERSION = '0.0'; |
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26 | |
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27 | sub new { |
25 | sub new { |
28 | my ($class, $noderef) = @_; |
26 | my ($self, $id) = @_; |
29 | |
27 | |
30 | bless { noderef => $noderef }, $class |
28 | $self = bless { id => $id }, $self; |
31 | } |
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32 | |
29 | |
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30 | $self->init; |
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31 | $self->transport_reset; |
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32 | |
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33 | $self |
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34 | } |
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35 | |
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36 | sub init { |
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37 | # |
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38 | } |
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39 | |
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40 | sub send { |
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41 | &{ shift->{send} } |
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42 | } |
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43 | |
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44 | # nodes reachable via the network |
33 | package AnyEvent::MP::Node::Direct; |
45 | package AnyEvent::MP::Node::External; |
34 | |
46 | |
35 | use base "AnyEvent::MP::Node"; |
47 | use base "AnyEvent::MP::Node"; |
36 | |
48 | |
37 | sub send { |
49 | # called at init time, mostly sets {send} |
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50 | sub transport_reset { |
38 | my ($self, $msg) = @_; |
51 | my ($self) = @_; |
39 | |
52 | |
40 | if ($self->{transport}) { |
53 | delete $self->{transport}; |
41 | $self->{transport}->send ($msg); |
54 | |
42 | } elsif ($self->{queue}) { |
55 | Scalar::Util::weaken $self; |
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56 | |
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57 | $self->{send} = sub { |
43 | push @{ $self->{queue} }, $msg; |
58 | push @{$self->{queue}}, shift; |
44 | } else { |
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45 | $self->{queue} = [$msg]; |
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46 | $self->connect; |
59 | $self->connect; |
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60 | }; |
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61 | } |
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62 | |
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63 | # called only after successful handshake |
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64 | sub transport_error { |
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65 | my ($self, @reason) = @_; |
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66 | |
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67 | my $no_transport = !$self->{transport}; |
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68 | |
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69 | delete $self->{connect_w}; |
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70 | delete $self->{connect_to}; |
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71 | |
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72 | delete $self->{queue}; |
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73 | $self->transport_reset; |
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74 | |
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75 | if (my $mon = delete $self->{lmon}) { |
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76 | $_->(@reason) for map @$_, values %$mon; |
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77 | } |
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78 | |
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79 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
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80 | unless $no_transport; |
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81 | } |
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82 | |
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83 | # called after handshake was successful |
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84 | sub transport_connect { |
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85 | my ($self, $transport) = @_; |
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86 | |
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87 | delete $self->{trial}; |
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88 | |
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89 | $self->transport_error (transport_error => "switched connections") |
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90 | if $self->{transport}; |
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91 | |
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92 | delete $self->{connect_w}; |
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93 | delete $self->{connect_to}; |
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94 | |
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95 | $self->{transport} = $transport; |
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96 | |
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97 | my $transport_send = $transport->can ("send"); |
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98 | |
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99 | $self->{send} = sub { |
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100 | $transport_send->($transport, $_[0]); |
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101 | }; |
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102 | |
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103 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
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104 | |
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105 | $transport->send ($_) |
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106 | for @{ delete $self->{queue} || [] }; |
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107 | } |
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108 | |
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109 | sub connect { |
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110 | my ($self, @addresses) = @_; |
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111 | |
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112 | return if $self->{transport}; |
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113 | |
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114 | Scalar::Util::weaken $self; |
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115 | |
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116 | $self->{connect_to} ||= AE::timer |
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117 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
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118 | 0, |
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119 | sub { |
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120 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
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121 | }; |
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122 | |
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123 | return unless @addresses; |
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124 | |
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125 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); |
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126 | |
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127 | unless ($self->{connect_w}) { |
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128 | my @endpoints; |
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129 | |
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130 | $self->{connect_w} = AE::timer |
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131 | rand, |
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132 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
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133 | sub { |
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134 | @endpoints = @addresses |
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135 | unless @endpoints; |
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136 | |
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137 | my $endpoint = shift @endpoints; |
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138 | |
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139 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
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140 | |
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141 | $self->{trial}{$endpoint} ||= do { |
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142 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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143 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
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144 | |
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145 | AnyEvent::MP::Transport::mp_connect |
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146 | $host, $port, |
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147 | sub { delete $self->{trial}{$endpoint} }, |
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148 | }; |
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149 | } |
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150 | ; |
47 | } |
151 | } |
48 | } |
152 | } |
49 | |
153 | |
50 | sub kill { |
154 | sub kill { |
51 | my ($self, $port, @reason) = @_; |
155 | my ($self, $port, @reason) = @_; |
… | |
… | |
57 | my ($self, $portid, $cb) = @_; |
161 | my ($self, $portid, $cb) = @_; |
58 | |
162 | |
59 | my $list = $self->{lmon}{$portid} ||= []; |
163 | my $list = $self->{lmon}{$portid} ||= []; |
60 | |
164 | |
61 | $self->send (["", mon1 => $portid]) |
165 | $self->send (["", mon1 => $portid]) |
62 | unless @$list; |
166 | unless @$list || !length $portid; |
63 | |
167 | |
64 | push @$list, $cb; |
168 | push @$list, $cb; |
65 | } |
169 | } |
66 | |
170 | |
67 | sub unmonitor { |
171 | sub unmonitor { |
… | |
… | |
76 | $self->send (["", mon0 => $portid]); |
180 | $self->send (["", mon0 => $portid]); |
77 | delete $self->{monitor}{$portid}; |
181 | delete $self->{monitor}{$portid}; |
78 | } |
182 | } |
79 | } |
183 | } |
80 | |
184 | |
81 | sub set_transport { |
185 | # used for direct slave connections as well |
82 | my ($self, $transport) = @_; |
186 | package AnyEvent::MP::Node::Direct; |
83 | |
187 | |
84 | $self->clr_transport |
188 | use base "AnyEvent::MP::Node::External"; |
85 | if $self->{transport}; |
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86 | |
189 | |
87 | delete $self->{trial}; |
190 | package AnyEvent::MP::Node::Self; |
88 | delete $self->{next_connect}; |
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89 | |
191 | |
90 | $self->{transport} = $transport; |
192 | use base "AnyEvent::MP::Node"; |
91 | |
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92 | $transport->send ($_) |
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93 | for @{ delete $self->{queue} || [] }; |
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94 | } |
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95 | |
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96 | sub fail { |
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97 | my ($self, @reason) = @_; |
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98 | |
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99 | delete $self->{queue}; |
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100 | |
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101 | if (my $mon = delete $self->{lmon}) { |
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102 | $_->(@reason) for map @$_, values %$mon; |
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103 | } |
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104 | } |
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105 | |
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106 | sub clr_transport { |
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107 | my ($self, @reason) = @_; |
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108 | |
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109 | delete $self->{transport}; |
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110 | $self->connect; |
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111 | } |
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112 | |
193 | |
113 | sub connect { |
194 | sub connect { |
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195 | # we are trivially connected |
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196 | } |
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197 | |
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198 | sub transport_reset { |
114 | my ($self) = @_; |
199 | my ($self) = @_; |
115 | |
200 | |
116 | Scalar::Util::weaken $self; |
201 | Scalar::Util::weaken $self; |
117 | |
202 | |
118 | $self->{retry} ||= [split /,/, $self->{noderef}]; |
203 | $self->{send} = sub { |
119 | |
204 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
120 | my $endpoint = shift @{ $self->{retry} }; |
205 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
121 | |
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122 | if (defined $endpoint) { |
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123 | $self->{trial}{$endpoint} ||= do { |
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124 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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125 | or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference."); |
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126 | |
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127 | my ($w, $g); |
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128 | |
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129 | $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub { |
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130 | delete $self->{trial}{$endpoint}; |
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131 | }; |
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132 | $g = AnyEvent::MP::Transport::mp_connect |
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133 | $host, $port, |
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134 | sub { |
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135 | delete $self->{trial}{$endpoint} |
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136 | unless @_; |
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137 | $g = shift; |
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138 | }; |
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139 | ; |
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140 | |
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141 | [$w, \$g] |
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142 | }; |
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143 | } else { |
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144 | delete $self->{retry}; |
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145 | $self->fail (transport_error => $self->{noderef}, "unable to connect"); |
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146 | } |
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147 | |
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148 | $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { |
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149 | $self->connect; |
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150 | }; |
206 | }; |
151 | } |
207 | } |
152 | |
208 | |
153 | package AnyEvent::MP::Node::Slave; |
209 | sub transport_connect { |
154 | |
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155 | use base "AnyEvent::MP::Node::Direct"; |
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156 | |
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157 | sub connect { |
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158 | my ($self) = @_; |
210 | my ($self, $tp) = @_; |
159 | |
211 | |
160 | $self->fail (transport_error => $self->{noderef}, "unable to connect to slave node"); |
212 | $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); |
161 | } |
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162 | |
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163 | package AnyEvent::MP::Node::Self; |
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164 | |
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165 | use base "AnyEvent::MP::Node"; |
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166 | |
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167 | sub set_transport { |
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168 | Carp::confess "FATAL error, set_transport was called on local node"; |
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169 | } |
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170 | |
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171 | sub send { |
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172 | local $AnyEvent::MP::Base::SRCNODE = $_[0]; |
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173 | AnyEvent::MP::Base::_inject (@{ $_[1] }); |
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174 | } |
213 | } |
175 | |
214 | |
176 | sub kill { |
215 | sub kill { |
177 | my ($self, $port, @reason) = @_; |
216 | my ($self, $port, @reason) = @_; |
178 | |
217 | |
179 | delete $AnyEvent::MP::Base::PORT{$port}; |
218 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
180 | delete $AnyEvent::MP::Base::PORT_DATA{$port}; |
219 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
181 | |
220 | |
182 | my $mon = delete $AnyEvent::MP::Base::LMON{$port} |
221 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
183 | or !@reason |
222 | or !@reason |
184 | or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason"); |
223 | or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); |
185 | |
224 | |
186 | $_->(@reason) for values %$mon; |
225 | $_->(@reason) for values %$mon; |
187 | } |
226 | } |
188 | |
227 | |
189 | sub monitor { |
228 | sub monitor { |
190 | my ($self, $portid, $cb) = @_; |
229 | my ($self, $portid, $cb) = @_; |
191 | |
230 | |
192 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
231 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
193 | unless exists $AnyEvent::MP::Base::PORT{$portid}; |
232 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
194 | |
233 | |
195 | $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; |
234 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
196 | } |
235 | } |
197 | |
236 | |
198 | sub unmonitor { |
237 | sub unmonitor { |
199 | my ($self, $portid, $cb) = @_; |
238 | my ($self, $portid, $cb) = @_; |
200 | |
239 | |
201 | delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; |
240 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
202 | } |
241 | } |
203 | |
242 | |
204 | =head1 SEE ALSO |
243 | =head1 SEE ALSO |
205 | |
244 | |
206 | L<AnyEvent>. |
245 | L<AnyEvent::MP>. |
207 | |
246 | |
208 | =head1 AUTHOR |
247 | =head1 AUTHOR |
209 | |
248 | |
210 | Marc Lehmann <schmorp@schmorp.de> |
249 | Marc Lehmann <schmorp@schmorp.de> |
211 | http://home.schmorp.de/ |
250 | http://home.schmorp.de/ |