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#!/usr/bin/perl |
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package Proc::Swarm; |
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$Proc::Swarm::VERSION = '1.161060'; |
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118477
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use strict;use warnings; |
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5863
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766
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5243
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104953
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use IPC::Msg; |
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1142641
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6295
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132967
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use Storable; |
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572593
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258
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313705
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sub _usage { |
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print @_ . "\n" if @_; |
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print q( |
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Proc::Swarm::swarm( |
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code => $coderef, |
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children => $child_count, |
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work => \@work_units, |
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[sort => 1], |
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[debug => 1] ); |
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); |
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exit 255; |
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} |
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sub swarm { |
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0
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165008
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my $args = shift; |
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1400
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_usage() if ref $args ne 'HASH'; |
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366
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my $coderef = $args->{code}; |
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315
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my $max_children = $args->{children}; |
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285
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my @units = @{$args->{work}}; |
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277
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1821
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277
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544
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my $sort_output = $args->{sort}; |
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277
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297
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my $sort_code = $args->{sort_code}; |
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32
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277
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1350
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my @work_units = @units; |
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277
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50
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626
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_usage('No work defined') if (scalar @work_units) == 0; |
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35
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277
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50
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1172
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_usage('Invalid code passed') unless ref $coderef eq 'CODE'; |
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277
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50
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33
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1937
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_usage('Child count argument must be a non-negative, non-zero integer') |
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if $max_children < 1 or $max_children =~ /\./; |
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277
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562
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_usage('Work units must not contain a reference') |
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if ref $work_units[0]; |
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41
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#We now have something like clean arguments. |
42
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43
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#We need two message queues. One that the producer listens to, and |
44
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#another the consumer listens to. |
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46
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277
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592
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my $Qc = Proc::Swarm::Queue->new; #consumer |
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277
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554
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my $Qp = Proc::Swarm::Queue->new; #producer |
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49
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#The main parent is the consumer. It will exit last. |
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#The first child is the producer. |
51
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277
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162814
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my $pid = fork(); |
52
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277
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50
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9515
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if(not defined $pid) { #fork failed |
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100
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53
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0
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0
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die 'Fork failed. Check your system resources.'; |
54
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} elsif(not $pid) { #Child (producer) |
55
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252
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2264
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my $worker_count = 0; |
56
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252
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1401
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my $another_count = 0; |
57
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#first we spin off enough children to max out the count. |
58
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252
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7268
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for (1..$max_children) { |
59
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6630
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114175
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_worker(pop @work_units, $coderef, $Qc); |
60
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6518
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170725
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$worker_count++; |
61
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} |
62
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63
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#Now we should have $max_children processes. Wait for them |
64
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#to finish. |
65
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140
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2094
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while(1) { |
66
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#We are expecting one of: |
67
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# requests to spawn another worker from the consumer |
68
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# requests from workers to add objects to work list |
69
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# requests from workers to remove objects from work list |
70
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71
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3803
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43381
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my $package = $Qp->receive; |
72
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3803
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50
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10924
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if($package->get_type eq 'another') { |
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0
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0
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73
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3803
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5252
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$another_count++; |
74
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3803
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100
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17702
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if($another_count == $worker_count) { |
75
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#We are now done. |
76
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6
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113
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$Qc->send(Proc::Swarm::Package->new(undef, 'end')); |
77
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6
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1645
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exit; |
78
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} |
79
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80
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3797
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100
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11093
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if((scalar @work_units) != 0) { |
81
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3747
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21300
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_worker(pop(@work_units), $coderef, $Qc); |
82
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3613
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183377
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$worker_count++; |
83
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} |
84
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} elsif($package->get_type eq 'del') { |
85
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#find $package->get_object in @work_units and |
86
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#remove it |
87
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0
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0
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my @work_units_tmp; |
88
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my @new_work_units; |
89
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0
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0
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foreach my $work_object (@work_units) { |
90
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0
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0
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0
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push @new_work_units, $work_object |
91
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unless $work_object eq $package->get_object; |
92
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} |
93
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0
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0
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undef @work_units; |
94
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0
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0
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foreach (@new_work_units) { push @work_units, $_; } |
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0
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0
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95
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96
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} elsif($package->get_type eq 'new') { |
97
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#add $package->get_object into @work_units |
98
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0
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0
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push @work_units, $package->get_object; |
99
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} |
100
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} |
101
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} else { #Parent (consumer) |
102
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25
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305
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my @results; |
103
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104
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25
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98
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while(1) { |
105
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#We are expecting messages from the workers here. |
106
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#For each worker message, we want to record the result |
107
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#and inform the producer to spawn another worker. |
108
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205
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5824
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my $package = $Qc->receive; |
109
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205
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100
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1037
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if($package->get_type eq 'res') { |
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50
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110
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180
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667
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push @results, $package->get_object; |
111
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#Tell the producer to spawn another worker. |
112
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180
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2669
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$Qp->send( |
113
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Proc::Swarm::Package->new(undef, 'another')); |
114
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} elsif($package->get_type eq 'end') { |
115
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#This is a message from the producer that |
116
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#it is finished spawning workers. |
117
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118
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#We will only get this message when we are |
119
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#sure all of the workers are finished. |
120
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25
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100
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226
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if(defined($sort_output)) { |
121
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21
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316
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@results = _sort_results($sort_code, \@results, \@units); |
122
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} |
123
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25
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154
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$Qc->cleanup; |
124
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25
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2174
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$Qp->cleanup; |
125
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25
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341
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return Proc::Swarm::Results->new(@results); |
126
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} |
127
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} |
128
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} |
129
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} |
130
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131
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sub _sort_results { |
132
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21
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21
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63
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my ($sort_code,$results_ref,$units_ref) = @_; |
133
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134
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21
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102
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my @units = @$units_ref; |
135
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21
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43
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my @results = @$results_ref; |
136
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21
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41
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my %sort_hash; |
137
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21
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42
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{ my $i = 0; |
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21
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22
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138
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21
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106
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%sort_hash = map { $units[$i], $i++ } @units; |
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63
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384
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139
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} |
140
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141
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21
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50
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168
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$sort_code = q( |
142
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sub { $sort_hash{$a->get_object} |
143
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<=> |
144
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$sort_hash{$b->get_object} |
145
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}; |
146
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) unless defined $sort_code; |
147
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148
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21
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4427
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my $sort_coderef = eval $sort_code; |
149
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150
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21
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804
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@results = sort $sort_coderef @results; |
151
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21
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289
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return @results; |
152
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} |
153
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154
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#this function should immediately return. |
155
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sub _worker { |
156
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10377
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10377
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26976
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my ($object,$coderef,$Qc) = @_; |
157
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158
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10377
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11014
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my ($Qp,$pid); |
159
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#the classic double fork. |
160
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10377
|
100
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5544038
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unless ($pid = fork) { |
161
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246
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100
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144421
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unless (fork) { |
162
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123
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4555
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_worker_worker($object, $coderef, $Qc, $Qp); |
163
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123
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46014
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exit 0; |
164
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} |
165
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123
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43990
|
exit 0; |
166
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} |
167
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10131
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2645360592
|
waitpid $pid,0; |
168
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} |
169
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170
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sub _worker_worker { |
171
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123
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123
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1960
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my ($object,$coderef,$Qc,$Qp) = @_; |
172
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123
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1125
|
my $start = scalar time; |
173
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123
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885
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my ($retval,$result_type); |
174
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175
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123
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5848
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eval { |
176
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123
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4342
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$retval = &$coderef($object); |
177
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}; |
178
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123
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100
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1009060599
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if($@) { |
179
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2
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16
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$result_type = 'error'; |
180
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2
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8
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$retval = $@; |
181
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} else { |
182
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121
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|
1916
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$result_type = 'good'; |
183
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} |
184
|
123
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|
945
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my $end = scalar time; |
185
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123
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3745
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my $result = Proc::Swarm::Result->new(($end-$start), $object, $retval, $result_type); |
186
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123
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1165
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my $package = Proc::Swarm::Package->new($result, 'res'); |
187
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188
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123
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3321
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$Qc->send($package); |
189
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} |
190
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191
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package Proc::Swarm::Package; |
192
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|
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|
|
$Proc::Swarm::Package::VERSION = '1.161060'; |
193
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sub new { |
194
|
309
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309
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1652
|
my ($proto,$object,$type) = @_; |
195
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196
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197
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309
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33
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3548
|
my $class = ref($proto) || $proto; |
198
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309
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1054
|
my $self = {}; |
199
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309
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1617
|
$self->{type} = $type; |
200
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309
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617
|
$self->{obj} = $object; |
201
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202
|
309
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889
|
bless $self, $class; |
203
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309
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1196
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return $self; |
204
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} |
205
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206
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sub get_type { |
207
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4033
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4033
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5405
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my $self = shift; |
208
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4033
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15338
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return $self->{type}; |
209
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} |
210
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211
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sub get_object { |
212
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180
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180
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378
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my $self = shift; |
213
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180
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550
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return $self->{obj}; |
214
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} |
215
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package Proc::Swarm::Results; |
216
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$Proc::Swarm::Results::VERSION = '1.161060'; |
217
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sub new { |
218
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25
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25
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31
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my $proto = shift; |
219
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25
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33
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188
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my $class = ref($proto) || $proto; |
220
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221
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25
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87
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my @results = @_; |
222
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223
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25
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51
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my $self = {}; |
224
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25
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102
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$self->{results} = \@results; |
225
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25
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33
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bless $self, $class; |
226
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25
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825
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return $self; |
227
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} |
228
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229
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sub get_result_count { |
230
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0
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0
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0
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my $self = shift; |
231
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0
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0
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0
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return $self->{count} if defined $self->{count}; |
232
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0
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0
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$self->{count} = scalar @{$self->{results}}; |
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0
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0
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233
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0
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0
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return $self->{count}; |
234
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} |
235
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236
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sub get_result { |
237
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1
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1
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12
|
my $self = shift; |
238
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1
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1
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my $object_id = shift; |
239
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240
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1
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2
|
foreach my $result (@{$self->{results}}) { |
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1
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8
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241
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4
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100
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9
|
return $result |
242
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|
if $result->get_object eq $object_id; |
243
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} |
244
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0
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0
|
return undef; |
245
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} |
246
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247
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sub get_result_objects { |
248
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23
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23
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496
|
my $self = shift; |
249
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23
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50
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184
|
return @{$self->{objects}} if defined $self->{objects}; |
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0
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0
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250
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251
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23
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24
|
my @objects; |
252
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23
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25
|
foreach my $result (@{$self->{results}}) { |
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23
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181
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253
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173
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244
|
push @objects, $result->get_result; |
254
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} |
255
|
23
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|
81
|
$self->{objects} = \@objects; |
256
|
23
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|
129
|
return @objects; |
257
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|
} |
258
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259
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|
|
sub get_results { |
260
|
0
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0
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0
|
my $self = shift; |
261
|
0
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0
|
return @{$self->{results}}; |
|
0
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0
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|
262
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|
} |
263
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264
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|
|
sub get_result_times { |
265
|
1
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|
1
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|
25
|
my $self = shift; |
266
|
|
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|
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|
267
|
1
|
50
|
|
|
|
8
|
return @{$self->{times}} if defined $self->{times}; |
|
0
|
|
|
|
|
0
|
|
268
|
|
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|
|
269
|
1
|
|
|
|
|
1
|
my @times; |
270
|
1
|
|
|
|
|
2
|
foreach my $result (@{$self->{results}}) { |
|
1
|
|
|
|
|
7
|
|
271
|
3
|
|
|
|
|
5
|
push @times, $result->get_runtime; |
272
|
|
|
|
|
|
|
} |
273
|
1
|
|
|
|
|
8
|
$self->{times} = \@times; |
274
|
1
|
|
|
|
|
11
|
return @times; |
275
|
|
|
|
|
|
|
} |
276
|
|
|
|
|
|
|
|
277
|
|
|
|
|
|
|
sub get_objects { |
278
|
0
|
|
|
0
|
|
0
|
my $self = shift; |
279
|
|
|
|
|
|
|
|
280
|
0
|
|
|
|
|
0
|
my @objects; |
281
|
0
|
|
|
|
|
0
|
foreach my $result (@{$self->{results}}) { |
|
0
|
|
|
|
|
0
|
|
282
|
0
|
|
|
|
|
0
|
push @objects, $result->get_object; |
283
|
|
|
|
|
|
|
} |
284
|
|
|
|
|
|
|
|
285
|
0
|
|
|
|
|
0
|
return @objects; |
286
|
|
|
|
|
|
|
} |
287
|
|
|
|
|
|
|
|
288
|
|
|
|
|
|
|
package Proc::Swarm::Result; |
289
|
|
|
|
|
|
|
$Proc::Swarm::Result::VERSION = '1.161060'; |
290
|
|
|
|
|
|
|
sub new { |
291
|
123
|
|
|
123
|
|
379
|
my $proto = shift; |
292
|
123
|
|
33
|
|
|
3609
|
my $class = ref($proto) || $proto; |
293
|
|
|
|
|
|
|
|
294
|
123
|
|
|
|
|
938
|
my $self = {}; |
295
|
|
|
|
|
|
|
( $self->{runtime}, |
296
|
|
|
|
|
|
|
$self->{object}, |
297
|
|
|
|
|
|
|
$self->{result},$self->{result_type} |
298
|
123
|
|
|
|
|
4103
|
) = @_; |
299
|
123
|
|
|
|
|
835
|
bless $self, $class; |
300
|
123
|
|
|
|
|
982
|
return $self; |
301
|
|
|
|
|
|
|
} |
302
|
|
|
|
|
|
|
|
303
|
|
|
|
|
|
|
sub get_runtime { |
304
|
3
|
|
|
3
|
|
3
|
my $self = shift; |
305
|
3
|
|
|
|
|
4
|
return $self->{runtime}; |
306
|
|
|
|
|
|
|
} |
307
|
|
|
|
|
|
|
sub |
308
|
|
|
|
|
|
|
get_object { |
309
|
128
|
|
|
128
|
|
148
|
my $self = shift; |
310
|
128
|
|
|
|
|
1128
|
return $self->{object}; |
311
|
|
|
|
|
|
|
} |
312
|
|
|
|
|
|
|
|
313
|
|
|
|
|
|
|
sub get_result { |
314
|
173
|
|
|
173
|
|
168
|
my $self = shift; |
315
|
173
|
|
|
|
|
273
|
return $self->{result}; |
316
|
|
|
|
|
|
|
} |
317
|
|
|
|
|
|
|
|
318
|
|
|
|
|
|
|
sub get_result_type { |
319
|
1
|
|
|
1
|
|
1
|
my $self = shift; |
320
|
1
|
|
|
|
|
16
|
return $self->{result_type}; |
321
|
|
|
|
|
|
|
} |
322
|
|
|
|
|
|
|
|
323
|
|
|
|
|
|
|
|
324
|
|
|
|
|
|
|
package Proc::Swarm::Queue; |
325
|
|
|
|
|
|
|
$Proc::Swarm::Queue::VERSION = '1.161060'; |
326
|
|
|
|
|
|
|
sub new { |
327
|
554
|
|
|
554
|
|
589
|
my $proto = shift; |
328
|
554
|
|
33
|
|
|
1688
|
my $class = ref($proto) || $proto; |
329
|
|
|
|
|
|
|
|
330
|
258
|
|
|
258
|
|
1327
|
use IPC::SysV qw(IPC_PRIVATE S_IRWXU); |
|
258
|
|
|
|
|
285
|
|
|
258
|
|
|
|
|
43194
|
|
331
|
|
|
|
|
|
|
|
332
|
554
|
|
|
|
|
581
|
my $self = {}; |
333
|
|
|
|
|
|
|
|
334
|
554
|
|
|
|
|
1666
|
$self->{Q} = IPC::Msg->new(IPC_PRIVATE, S_IRWXU); |
335
|
|
|
|
|
|
|
|
336
|
554
|
|
|
|
|
15221
|
bless $self, $class; |
337
|
554
|
|
|
|
|
599
|
return $self; |
338
|
|
|
|
|
|
|
} |
339
|
|
|
|
|
|
|
|
340
|
|
|
|
|
|
|
#We can't define a DESTROY method because this class goes out of scope a |
341
|
|
|
|
|
|
|
#number of times before we actually want to remove the queues. |
342
|
|
|
|
|
|
|
sub cleanup { |
343
|
50
|
|
|
50
|
|
89
|
my $self = shift; |
344
|
50
|
|
|
|
|
313
|
$self->{Q}->remove; |
345
|
|
|
|
|
|
|
} |
346
|
|
|
|
|
|
|
|
347
|
|
|
|
|
|
|
sub send { |
348
|
309
|
|
|
309
|
|
563
|
my ($self,$obj) = @_; |
349
|
309
|
|
|
|
|
2440
|
my $frozen_obj = Storable::freeze($obj); |
350
|
309
|
|
|
|
|
46080
|
return $self->{Q}->snd(1, $frozen_obj); #Message type '1' |
351
|
|
|
|
|
|
|
} |
352
|
|
|
|
|
|
|
|
353
|
|
|
|
|
|
|
sub receive { |
354
|
4008
|
|
|
4008
|
|
8574
|
my $self = shift; |
355
|
4008
|
|
|
|
|
4283
|
my $in_buf; |
356
|
4008
|
|
|
|
|
68283
|
my $thing = $self->{Q}->rcv($in_buf, 10240000);#This grabs any message type. |
357
|
4008
|
|
|
|
|
476873358
|
my $thawed_thing = Storable::thaw $in_buf; |
358
|
4008
|
|
|
|
|
134378
|
return $thawed_thing; |
359
|
|
|
|
|
|
|
} |
360
|
|
|
|
|
|
|
|
361
|
|
|
|
|
|
|
1; |
362
|
|
|
|
|
|
|
|
363
|
|
|
|
|
|
|
|
364
|
|
|
|
|
|
|
__END__ |