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stmt |
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code |
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package Signals::XSIG; |
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3
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## no critic (RequireLocalizedPunctuationVars, ProhibitAutomaticExport) |
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5
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12
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12
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21501
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use Signals::XSIG::Default; |
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32
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12
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64
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76
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use Carp; |
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26
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12
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588
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64
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use Config; |
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19
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12
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324
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8
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60
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use Exporter; |
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27
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12
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290
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9
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56
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use POSIX (); |
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20
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12
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207
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5159
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use Symbol qw(qualify); |
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7797
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12
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620
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12
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5121
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use Time::HiRes 'time'; |
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12646
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12
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50
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12
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12
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1857
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use warnings; |
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25
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12
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334
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59
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use strict; |
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2052
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15
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our @ISA = qw(Exporter); |
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our @EXPORT = qw(%XSIG); |
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our @EXPORT_OK = qw(untied %DEFAULT_BEHAVIOR); |
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19
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our %DEFAULT_BEHAVIOR; |
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*DEFAULT_BEHAVIOR = \%Signals::XSIG::Default::DEFAULT_BEHAVIOR; |
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22
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our $VERSION = '0.15_04'; |
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our (%XSIG, %_XSIG, %SIGTABLE, $_REFRESH, $_DISABLE_WARNINGS); |
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our $_INITIALIZED = 0; |
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our $SIGTIE = bless {}, 'Signals::XSIG::TieSIG'; |
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our $XSIGTIE = bless {}, 'Signals::XSIG::TieXSIG'; |
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our $TIEARRAY_CLASS = 'Signals::XSIG::TieArray'; |
28
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29
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my %TIEDSCALARS = (); # map signal names to S::X::TiedScalar objs |
30
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my %alias = (); |
31
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32
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33
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### |
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# to be removed when we get a handle on intermittent t/02 failures |
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our ($XDEBUG,$XN,@XLOG) = (0,1001); |
36
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12
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12
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0
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74
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sub XLOG{no warnings"uninitialized";push @XLOG,($XN++)." @_"} |
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12
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1134
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30
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12
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1550
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1134
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3374
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37
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0
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0
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0
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0
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sub XLOG_DUMP{join"\n",@XLOG} |
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### |
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40
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41
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BEGIN { |
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# how to detect global destruction. Idea from Devel::GlobalDestruction 0.13 |
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12
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50
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12
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71
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if (defined ${^GLOBAL_PHASE}) { |
44
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12
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50
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325
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892
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eval 'sub __inGD() {${^GLOBAL_PHASE} eq "DESTRUCT" && __END()}; 1'; |
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325
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2307
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45
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} else { |
46
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0
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0
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require B; |
47
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0
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0
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eval 'sub __inGD() { ${B::main_cv()}==0 && __END();}; 1'; |
48
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} |
49
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} |
50
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51
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&_init; |
52
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53
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sub _init { |
54
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12
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50
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12
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44
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return if $_INITIALIZED; |
55
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12
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21
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$_REFRESH = 0; |
56
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12
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50
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464
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if ($Config{PERL_VERSION} <= 6) { |
57
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0
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0
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require Signals::XSIG::TieArray56; |
58
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0
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0
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$TIEARRAY_CLASS = 'Signals::XSIG::TieArray56'; |
59
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} |
60
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61
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12
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46
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my @z = (); |
62
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12
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190
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my @num = split ' ', $Config{sig_num}; |
63
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12
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246
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my @name = split ' ', $Config{sig_name}; |
64
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12
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59
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for (my $i=0; $i<@name; $i++) { |
65
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828
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100
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1829
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if (defined $z[$num[$i]]) { |
66
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48
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120
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$alias{$name[$i]} = $z[$num[$i]]; |
67
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48
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126
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$alias{$z[$num[$i]]} = $name[$i]; |
68
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48
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126
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$alias{"pk:$z[$num[$i]]"} = 1; |
69
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} |
70
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828
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2112
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$z[$num[$i]] = $name[$i]; |
71
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} |
72
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73
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12
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57
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foreach my $sig (@name, '__WARN__', '__DIE__') { |
74
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852
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2340
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tie $_XSIG{$sig}, 'Signals::XSIG::TieScalar', $sig; |
75
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#### this functionality all happens within S::X::TieScalar::TIESCALAR now |
76
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# $_XSIG{$sig} = []; |
77
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# tie @{$_XSIG{$sig}}, $TIEARRAY_CLASS, $sig; |
78
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# $_XSIG{$sig}[0] = $SIG{$sig}; |
79
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} |
80
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12
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47
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tie %SIG, 'Signals::XSIG::TieSIG'; |
81
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12
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38
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$_REFRESH = 1; |
82
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12
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49
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foreach my $sig (@name, '__WARN__', '__DIE__') { |
83
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852
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100
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1850
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next if $sig eq 'ZERO'; |
84
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840
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50
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1275
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unless (eval { (tied @{$_XSIG{$sig}})->_refresh_SIG; 1 }) { |
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840
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1161
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840
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1798
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840
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2135
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85
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0
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0
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Carp::confess "Error initializing \@{\$XSIG{$sig}}!: $@\n"; |
86
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} |
87
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} |
88
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12
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54
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tie %XSIG, 'Signals::XSIG::TieXSIG'; |
89
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90
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12
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246
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my @signo = split ' ', $Config{sig_num}; |
91
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12
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195
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my @signame = split ' ', $Config{sig_name}; |
92
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12
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86
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for (my $i=0; $i<@signo; $i++) { |
93
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828
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1274
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my $signo = $signo[$i]; |
94
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828
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1124
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my $signame = $signame[$i]; |
95
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828
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66
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3453
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$SIGTABLE{$signo} ||= $signame; |
96
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828
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2957
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$SIGTABLE{'SIG' . $signame} = $SIGTABLE{$signame} = $SIGTABLE{$signo}; |
97
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} |
98
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12
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33
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$SIGTABLE{'__WARN__'} = '__WARN__'; |
99
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12
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27
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$SIGTABLE{'__DIE__'} = '__DIE__'; |
100
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12
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213
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return ++$_INITIALIZED; |
101
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} |
102
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103
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sub __shadow__warn__handler { ## no critic (Unpacking) |
104
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0
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0
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0
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return &__shadow_signal_handler('__WARN__',@_) |
105
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} |
106
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sub __shadow__die__handler { ## no critic (Unpacking) |
107
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0
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0
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0
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return &__shadow_signal_handler('__DIE__',@_) |
108
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} |
109
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110
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12
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12
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27045441
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END { &__END; } |
111
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112
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sub __END { |
113
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12
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12
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91
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no warnings 'redefine'; |
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12
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35
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12
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2756
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114
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12
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12
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278
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*__inGD = sub () { 1 }; |
115
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} |
116
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117
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sub __shadow_signal_handler { |
118
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25
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25
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1152
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my ($signal, @args) = @_; |
119
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120
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# %XSIG might be partially or completely untied during global destruction |
121
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25
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50
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586
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return if __inGD(); |
122
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25
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47
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my $seen_default = 0; |
123
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124
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25
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49
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my $h = tied @{$XSIG{$signal}}; |
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25
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81
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125
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25
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73
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my @handlers = $h->handlers; |
126
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25
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57
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my $start = $h->{start} - 1; |
127
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25
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34
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my $ignore_main_default = 0; |
128
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129
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# @HANDLER_SEQUENCE: the handlers that have already processed this signal |
130
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# will using 'local' be sufficient to distinguish handler count when |
131
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# signal handling is interrupted by another signal? |
132
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25
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60
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local @Signals::XSIG::HANDLER_SEQUENCE = (); |
133
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25
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63
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while (@handlers) { |
134
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186
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280
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my $subhandler = shift @handlers; |
135
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186
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245
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$start++; |
136
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186
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100
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395
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next if !defined($subhandler); |
137
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155
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100
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338
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next if $subhandler eq ''; |
138
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149
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100
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287
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if ($start != 0) { |
139
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125
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169
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$ignore_main_default = 1; |
140
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} |
141
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149
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100
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344
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next if $subhandler eq 'IGNORE'; |
142
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134
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100
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251
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if ($subhandler eq 'DEFAULT') { |
143
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5
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50
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12
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if ($start == 0) { |
144
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0
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0
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0
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if ($ignore_main_default) { |
145
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0
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0
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next; |
146
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} |
147
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0
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0
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0
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if (0 != grep { defined($_) && $_ ne '' } @handlers) { |
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0
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0
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0
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148
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0
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0
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next; |
149
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} |
150
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} |
151
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5
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100
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14
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next if $seen_default++; |
152
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4
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18
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Signals::XSIG::Default::perform_default_behavior($signal, @args); |
153
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4
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12
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push @Signals::XSIG::HANDLER_SEQUENCE, 'DEFAULT'; |
154
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} else { |
155
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129
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100
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270
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next if !defined &$subhandler; |
156
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12
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12
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77
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no strict 'refs'; ## no critic (NoStrict) |
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12
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24
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12
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7769
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157
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123
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50
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224
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if ($signal =~ /__\w+__/) { |
158
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0
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0
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$subhandler->(@args); |
159
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|
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} else { |
160
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123
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274
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$subhandler->($signal, @args); |
161
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} |
162
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123
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477
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push @Signals::XSIG::HANDLER_SEQUENCE, $subhandler; |
163
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} |
164
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} |
165
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25
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123
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return; |
166
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} |
167
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168
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# convert a signal name to its canonical name. If not disabled, |
169
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# warn if the input is not a valid signal name. |
170
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# TERM => TERM |
171
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# CLD => CHLD |
172
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# OOK => warning |
173
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|
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sub _resolve_signal { |
174
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16251
|
|
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16251
|
|
26546
|
my ($sig, $DISABLE_WARNINGS) = @_; |
175
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16251
|
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66
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58905
|
$DISABLE_WARNINGS ||= $_DISABLE_WARNINGS; |
176
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16251
|
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28578
|
$sig = $SIGTABLE{uc $sig}; |
177
|
16251
|
100
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|
32497
|
if (defined $sig) { |
178
|
15373
|
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|
21972
|
$_[0] = $sig; ## no critic (Unpacking) |
179
|
15373
|
|
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|
|
26633
|
return 1; |
180
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|
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|
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} |
181
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878
|
100
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1830
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return 1 if !$_INITIALIZED; |
182
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183
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|
# signal could not be resolved -- issue warning and return false |
184
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38
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100
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|
94
|
unless ($DISABLE_WARNINGS) { |
185
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10
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50
|
33
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|
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655
|
if (defined($sig) && $sig =~ /\d/ && $sig !~ /\D/) { |
|
|
50
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33
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186
|
0
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0
|
carp "Invalid signal number $sig.\n"; |
187
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|
|
} elsif (warnings::enabled('signal')) { |
188
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0
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0
|
Carp::cluck "Invalid signal name $sig.\n"; |
189
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|
|
} |
190
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|
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} |
191
|
38
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74
|
return; |
192
|
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|
|
} |
193
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194
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|
|
# execute a block of code while %SIG is temporarily untied. |
195
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|
196
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|
|
sub untied (&) { ## no critic (SubroutinePrototypes) |
197
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6263
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|
6263
|
0
|
9966
|
my $BLOCK = shift; |
198
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|
199
|
6263
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13157
|
untie %SIG; |
200
|
6263
|
50
|
|
|
|
14394
|
my @r = wantarray ? $BLOCK->() : scalar $BLOCK->(); |
201
|
6263
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|
16067
|
tie %SIG, 'Signals::XSIG::TieSIG'; |
202
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203
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6263
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50
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|
18193
|
return wantarray ? @r : $r[0]; |
204
|
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|
|
} |
205
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206
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207
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208
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|
|
# in %SIG and %XSIG assignments, string values are qualified to the |
209
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|
|
# 'main' package, unqualified *glob values are qualified to the |
210
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|
# calling package. |
211
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|
|
sub _qualify_handler { |
212
|
4550
|
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4550
|
|
6661
|
my $handler = shift; |
213
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214
|
4550
|
100
|
100
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|
|
12905
|
if (!defined($handler) |
|
|
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100
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|
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100
|
|
|
|
|
215
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|
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|
|
|| $handler eq '' |
216
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|
|
|| $handler eq 'IGNORE' |
217
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|
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|
|
|
|| $handler eq 'DEFAULT') { |
218
|
4323
|
|
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|
7734
|
return $handler; |
219
|
|
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|
|
} |
220
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|
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221
|
227
|
100
|
|
|
|
684
|
if (substr($handler,0,1) eq '*') { |
222
|
18
|
|
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|
|
36
|
my $n = 0; |
223
|
18
|
|
|
|
|
41
|
my $package = caller; |
224
|
18
|
|
66
|
|
|
150
|
while (defined($package) && $package =~ /^Signals::XSIG/) { |
225
|
35
|
|
|
|
|
162
|
$package = caller(++$n); |
226
|
|
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|
|
} |
227
|
|
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228
|
18
|
|
50
|
|
|
92
|
$handler = qualify($handler, $package || 'main'); |
229
|
|
|
|
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|
|
} else { |
230
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209
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|
613
|
$handler = qualify($handler, 'main'); |
231
|
|
|
|
|
|
|
} |
232
|
227
|
|
|
|
|
1880
|
return $handler; |
233
|
|
|
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|
|
|
} |
234
|
|
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|
|
235
|
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|
|
##################################################### |
236
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|
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|
|
# |
237
|
|
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|
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|
|
# Signals::XSIG::TieSIG |
238
|
|
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|
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|
|
# |
239
|
|
|
|
|
|
|
# Only for tie-ing %SIG. |
240
|
|
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|
|
|
|
# Associates $SIG{key} with $XSIG{$sig}[0] |
241
|
|
|
|
|
|
|
# |
242
|
|
|
|
|
|
|
|
243
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::TIEHASH { |
244
|
6275
|
100
|
|
6275
|
|
13646
|
$XDEBUG && XLOG("TIE caller=",caller); |
245
|
6275
|
|
|
|
|
11764
|
return $SIGTIE; |
246
|
|
|
|
|
|
|
} |
247
|
|
|
|
|
|
|
|
248
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::FETCH { |
249
|
2134
|
|
|
2134
|
|
79421
|
my ($self,$key) = @_; |
250
|
|
|
|
|
|
|
|
251
|
|
|
|
|
|
|
# track function calls to diagnose test failures |
252
|
2134
|
100
|
100
|
|
|
5666
|
$XDEBUG && $key ne '__DIE__' |
253
|
|
|
|
|
|
|
&& XLOG("FETCH key=$key caller=",caller); |
254
|
2134
|
100
|
|
|
|
4299
|
if (_resolve_signal($key)) { |
255
|
2127
|
100
|
100
|
|
|
5218
|
$XDEBUG && $key ne '__DIE__' && XLOG(" result(1)=",$_XSIG{$key}[0]); |
256
|
2127
|
|
|
|
|
4921
|
return $_XSIG{$key}[0]; |
257
|
|
|
|
|
|
|
} else { |
258
|
7
|
|
|
7
|
|
27
|
my $r = untied { $SIG{$key} }; |
|
7
|
|
|
|
|
19
|
|
259
|
7
|
50
|
33
|
|
|
27
|
$XDEBUG && $key ne '__DIE__' && XLOG(" result(2)=$r"); |
260
|
7
|
|
|
|
|
49
|
return $r; |
261
|
|
|
|
|
|
|
} |
262
|
|
|
|
|
|
|
} |
263
|
|
|
|
|
|
|
|
264
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::STORE { |
265
|
3399
|
|
|
3399
|
|
37834
|
my ($self,$key,$value) = @_; |
266
|
3399
|
100
|
100
|
|
|
8385
|
$XDEBUG && $key ne '__DIE__' |
267
|
|
|
|
|
|
|
&& XLOG("STORE($key,$value) caller=",caller); |
268
|
3399
|
100
|
|
|
|
6293
|
if (_resolve_signal($key)) { |
269
|
3397
|
|
|
|
|
7102
|
my $old = $_XSIG{$key}[0]; |
270
|
3397
|
|
|
|
|
8076
|
$_XSIG{$key}[0] = $value; |
271
|
3397
|
|
|
|
|
18853
|
return $old; |
272
|
|
|
|
|
|
|
} else { |
273
|
2
|
|
|
|
|
5
|
my $old; |
274
|
2
|
50
|
|
|
|
6
|
$XDEBUG && XLOG(" key $key not resolved"); |
275
|
|
|
|
|
|
|
untied { |
276
|
12
|
|
|
12
|
|
82
|
no warnings 'signal'; ## no critic (NoWarnings) |
|
12
|
|
|
|
|
27
|
|
|
12
|
|
|
|
|
11330
|
|
277
|
2
|
|
|
2
|
|
4
|
$old = $SIG{$key}; |
278
|
2
|
|
|
|
|
11
|
$SIG{$key} = $value; |
279
|
2
|
|
|
|
|
10
|
}; |
280
|
2
|
|
|
|
|
9
|
return $old; |
281
|
|
|
|
|
|
|
} |
282
|
|
|
|
|
|
|
} |
283
|
|
|
|
|
|
|
|
284
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::DELETE { |
285
|
4
|
|
|
4
|
|
18
|
my ($self,$key) = @_; |
286
|
4
|
50
|
33
|
|
|
20
|
$XDEBUG && $key ne '__DIE__' |
287
|
|
|
|
|
|
|
&& XLOG("DELETE key=$key caller=",caller); |
288
|
4
|
100
|
|
|
|
12
|
if (_resolve_signal($key)) { |
289
|
3
|
|
|
|
|
8
|
my $old = $_XSIG{$key}[0]; |
290
|
3
|
50
|
|
|
|
12
|
$XDEBUG && XLOG(" DELETE result(1)=$old"); |
291
|
3
|
|
|
|
|
7
|
$_XSIG{$key}[0] = undef; |
292
|
3
|
|
|
|
|
13
|
return $old; |
293
|
|
|
|
|
|
|
} else { |
294
|
1
|
|
|
|
|
5
|
my $old = $self->FETCH($key); |
295
|
1
|
50
|
|
|
|
5
|
$XDEBUG && XLOG(" DELETE result(2)=$old"); |
296
|
1
|
|
|
1
|
|
4
|
untied { $SIG{$key} = undef; delete $SIG{$key} }; |
|
1
|
|
|
|
|
91
|
|
|
1
|
|
|
|
|
10
|
|
297
|
1
|
|
|
|
|
6
|
return $old; |
298
|
|
|
|
|
|
|
} |
299
|
|
|
|
|
|
|
} |
300
|
|
|
|
|
|
|
|
301
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::CLEAR { |
302
|
3
|
|
|
3
|
|
643
|
my ($self) = @_; |
303
|
3
|
100
|
|
|
|
18
|
$XDEBUG && do { |
304
|
2
|
|
|
|
|
10
|
XLOG("CLEAR caller=",caller); |
305
|
2
|
|
|
|
|
6
|
XLOG(" CLEAR init USR1=",@{$_XSIG{USR1}}); |
|
2
|
|
|
|
|
6
|
|
306
|
2
|
|
|
|
|
5
|
XLOG(" CLEAR init USR2=",@{$_XSIG{USR2}}); |
|
2
|
|
|
|
|
5
|
|
307
|
|
|
|
|
|
|
}; |
308
|
|
|
|
|
|
|
|
309
|
|
|
|
|
|
|
# this used to say |
310
|
|
|
|
|
|
|
# $_XSIG{$_}[0] = undef for keys %_XSIG |
311
|
|
|
|
|
|
|
# but on some platforms, for a reason I don't yet understand, |
312
|
|
|
|
|
|
|
# the signal handler for the first value in the for loop |
313
|
|
|
|
|
|
|
# would not get cleared properly. For another reason I don't |
314
|
|
|
|
|
|
|
# yet understand, this is apparently not an issue for the |
315
|
|
|
|
|
|
|
# __WARN__ and __DIE__ handlers, so we'll manipulate the signal |
316
|
|
|
|
|
|
|
# list to make sure those handlers go first. |
317
|
|
|
|
|
|
|
|
318
|
3
|
|
|
|
|
114
|
my @sigs = reverse sort keys %_XSIG; |
319
|
3
|
100
|
|
|
|
30
|
$XDEBUG && XLOG(" \@sigs = qw(@sigs);"); |
320
|
3
|
|
|
|
|
13
|
$_XSIG{$_}[0] = undef for @sigs; |
321
|
|
|
|
|
|
|
|
322
|
3
|
100
|
|
|
|
13
|
$XDEBUG && do { |
323
|
2
|
|
|
|
|
4
|
XLOG(" CLEAR final USR1=",@{$_XSIG{USR1}}); |
|
2
|
|
|
|
|
6
|
|
324
|
2
|
|
|
|
|
5
|
XLOG(" CLEAR final USR2=",@{$_XSIG{USR2}}); |
|
2
|
|
|
|
|
5
|
|
325
|
|
|
|
|
|
|
}; |
326
|
3
|
|
|
|
|
23
|
return; |
327
|
|
|
|
|
|
|
} |
328
|
|
|
|
|
|
|
|
329
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::EXISTS { |
330
|
1697
|
|
|
1697
|
|
175386215
|
my ($self,$key) = @_; |
331
|
1697
|
50
|
66
|
|
|
4759
|
$XDEBUG && $key ne '__DIE__' |
332
|
|
|
|
|
|
|
&& XLOG("EXISTS key=$key caller=",caller); |
333
|
1697
|
|
|
1697
|
|
5648
|
return untied { exists $SIG{$key} }; |
|
1697
|
|
|
|
|
4583
|
|
334
|
|
|
|
|
|
|
} |
335
|
|
|
|
|
|
|
|
336
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::FIRSTKEY { |
337
|
2
|
|
|
2
|
|
138
|
my ($self) = @_; |
338
|
2
|
50
|
|
|
|
9
|
$XDEBUG && XLOG("FIRSTKEY caller=",caller); |
339
|
2
|
|
|
|
|
8
|
my $a = keys %_XSIG; |
340
|
2
|
50
|
|
|
|
12
|
$XDEBUG && XLOG(" FIRSTKEY result=$a"); |
341
|
2
|
|
|
|
|
13
|
return each %_XSIG; |
342
|
|
|
|
|
|
|
} |
343
|
|
|
|
|
|
|
|
344
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::NEXTKEY { |
345
|
142
|
|
|
142
|
|
216
|
my ($self, $lastkey) = @_; |
346
|
142
|
50
|
|
|
|
255
|
$XDEBUG && XLOG("NEXTKEY lastkey=$lastkey caller=",caller); |
347
|
142
|
|
|
|
|
390
|
return each %_XSIG; |
348
|
|
|
|
|
|
|
} |
349
|
|
|
|
|
|
|
|
350
|
|
|
|
|
|
|
sub Signals::XSIG::TieSIG::UNTIE { |
351
|
6260
|
100
|
66
|
6260
|
|
19940
|
$XDEBUG && !__inGD() && XLOG("UNTIE caller=",caller); |
352
|
6260
|
|
|
|
|
10945
|
return; |
353
|
|
|
|
|
|
|
} |
354
|
|
|
|
|
|
|
|
355
|
|
|
|
|
|
|
############################################################ |
356
|
|
|
|
|
|
|
# |
357
|
|
|
|
|
|
|
# Signals::XSIG::TieArray |
358
|
|
|
|
|
|
|
# |
359
|
|
|
|
|
|
|
# Applied to @{$XSIG{signal}}. |
360
|
|
|
|
|
|
|
# On update, refreshes the handler for the signal. |
361
|
|
|
|
|
|
|
# |
362
|
|
|
|
|
|
|
|
363
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::TIEARRAY { |
364
|
833
|
|
|
833
|
|
1954
|
my ($class, @list) = @_; |
365
|
833
|
|
|
|
|
1541
|
my $obj = bless {}, 'Signals::XSIG::TieArray'; |
366
|
833
|
|
|
|
|
1711
|
$obj->{key} = shift @list; |
367
|
833
|
|
|
|
|
1368
|
$obj->{start} = 0; # {start} refers to slot for first element of {handlers} |
368
|
833
|
|
|
|
|
1431
|
$obj->{handlers} = [ map { _qualify_handler($_) } @list ]; |
|
83
|
|
|
|
|
159
|
|
369
|
833
|
|
|
|
|
1780
|
return $obj; |
370
|
|
|
|
|
|
|
} |
371
|
|
|
|
|
|
|
|
372
|
|
|
|
|
|
|
# Wow. Those Perl guys thought of everything. |
373
|
|
|
|
|
|
|
$Signals::XSIG::TieArray::NEGATIVE_INDICES = 1; |
374
|
|
|
|
|
|
|
|
375
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::FETCH { |
376
|
5691
|
|
|
5691
|
|
10096
|
my ($self, $index) = @_; |
377
|
5691
|
|
|
|
|
9219
|
$index -= $self->{start}; |
378
|
5691
|
100
|
|
|
|
11801
|
return if $index < 0; |
379
|
5689
|
|
|
|
|
17157
|
return $self->{handlers}[$index]; |
380
|
|
|
|
|
|
|
} |
381
|
|
|
|
|
|
|
|
382
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::STORE { |
383
|
4467
|
|
|
4467
|
|
8382
|
my ($self, $index, $handler) = @_; |
384
|
4467
|
|
|
|
|
6990
|
$index -= $self->{start}; |
385
|
|
|
|
|
|
|
|
386
|
4467
|
|
|
|
|
10006
|
while ($index < 0) { |
387
|
10
|
|
|
|
|
16
|
unshift @{$self->{handlers}}, undef; |
|
10
|
|
|
|
|
16
|
|
388
|
10
|
|
|
|
|
13
|
$index++; |
389
|
10
|
|
|
|
|
19
|
$self->{start}--; |
390
|
|
|
|
|
|
|
} |
391
|
|
|
|
|
|
|
|
392
|
4467
|
|
|
|
|
7363
|
my $old = $self->{handlers}[$index]; |
393
|
|
|
|
|
|
|
|
394
|
4467
|
|
|
|
|
8183
|
$handler = _qualify_handler($handler); |
395
|
4467
|
|
|
|
|
7691
|
$self->{handlers}[$index] = $handler; |
396
|
4467
|
100
|
|
|
|
9719
|
$XDEBUG && XLOG("TA::STORE key=$self->{key} index=$index val=",$handler," caller=",caller); |
397
|
4467
|
|
|
|
|
10253
|
$self->_refresh_SIG(); |
398
|
4467
|
|
|
|
|
9299
|
return $old; |
399
|
|
|
|
|
|
|
} |
400
|
|
|
|
|
|
|
|
401
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::_refresh_SIG { |
402
|
5359
|
|
|
5359
|
|
7660
|
my $self = shift; |
403
|
5359
|
100
|
|
|
|
11288
|
return if $_REFRESH == 0; |
404
|
|
|
|
|
|
|
|
405
|
4555
|
|
|
|
|
7302
|
my $sig = $self->{key}; |
406
|
4555
|
|
|
|
|
7483
|
my @index_list = (); |
407
|
4555
|
|
|
|
|
6331
|
my @handlers = @{$self->{handlers}}; |
|
4555
|
|
|
|
|
8834
|
|
408
|
4555
|
|
|
|
|
7942
|
my ($seen_default, $seen_ignore) = (0,0); |
409
|
4555
|
|
|
|
|
10825
|
for (my $i=0; $i<@handlers; $i++) { |
410
|
5484
|
100
|
|
|
|
16245
|
next if !defined $handlers[$i]; |
411
|
469
|
100
|
100
|
|
|
1300
|
next if $handlers[$i] eq 'DEFAULT' && $seen_default++; |
412
|
468
|
100
|
100
|
|
|
1231
|
next if $handlers[$i] eq 'IGNORE' && $seen_ignore++; |
413
|
465
|
|
|
|
|
1225
|
push @index_list, $i + $self->{start}; |
414
|
|
|
|
|
|
|
} |
415
|
|
|
|
|
|
|
|
416
|
4555
|
|
|
|
|
6743
|
my $handler_to_install; |
417
|
4555
|
100
|
66
|
|
|
9124
|
if (@index_list == 0) { |
|
|
100
|
66
|
|
|
|
|
418
|
4315
|
|
|
|
|
6484
|
$handler_to_install = undef; |
419
|
|
|
|
|
|
|
} |
420
|
|
|
|
|
|
|
|
421
|
|
|
|
|
|
|
# XXX - if there is a single handler, and that handler is 'DEFAULT', |
422
|
|
|
|
|
|
|
# do we want to install the shadow signal handler anyway? |
423
|
|
|
|
|
|
|
# The caller may have overridden the DEFAULT behavior of the signal, |
424
|
|
|
|
|
|
|
# so yeah, I think we do. |
425
|
|
|
|
|
|
|
|
426
|
|
|
|
|
|
|
elsif (@index_list == 1 && |
427
|
|
|
|
|
|
|
($seen_default == 0 || ref($DEFAULT_BEHAVIOR{$sig}) eq '')) { |
428
|
|
|
|
|
|
|
#!$seen_default) { |
429
|
181
|
|
|
|
|
355
|
$handler_to_install = $handlers[$index_list[0]]; |
430
|
|
|
|
|
|
|
} else { |
431
|
59
|
50
|
|
|
|
152
|
if ($sig eq '__WARN__') { |
|
|
50
|
|
|
|
|
|
432
|
0
|
|
|
|
|
0
|
$handler_to_install = \&Signals::XSIG::__shadow__warn__handler; |
433
|
|
|
|
|
|
|
} elsif ($sig eq '__DIE__') { |
434
|
0
|
|
|
|
|
0
|
$handler_to_install = \&Signals::XSIG::__shadow__die__handler; |
435
|
|
|
|
|
|
|
} else { |
436
|
59
|
|
|
|
|
113
|
$handler_to_install = \&Signals::XSIG::__shadow_signal_handler; |
437
|
|
|
|
|
|
|
} |
438
|
|
|
|
|
|
|
} |
439
|
|
|
|
|
|
|
untied { |
440
|
12
|
|
|
12
|
|
88
|
no warnings qw(uninitialized signal); ## no critic (NoWarnings) |
|
12
|
|
|
|
|
25
|
|
|
12
|
|
|
|
|
13771
|
|
441
|
4555
|
100
|
|
4555
|
|
9654
|
$XDEBUG && XLOG("_refresh_SIG key=$self->{key} handler=$handler_to_install"); |
442
|
4555
|
|
|
|
|
15413
|
$SIG{$sig} = $handler_to_install; |
443
|
4555
|
|
|
|
|
19258
|
}; |
444
|
4555
|
|
|
|
|
13295
|
return; |
445
|
|
|
|
|
|
|
} |
446
|
|
|
|
|
|
|
|
447
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::handlers { |
448
|
25
|
|
|
25
|
|
37
|
my $self = shift; |
449
|
25
|
|
|
|
|
32
|
return @{$self->{handlers}}; |
|
25
|
|
|
|
|
88
|
|
450
|
|
|
|
|
|
|
} |
451
|
|
|
|
|
|
|
|
452
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::FETCHSIZE { |
453
|
21
|
|
|
21
|
|
57
|
my ($self) = @_; |
454
|
21
|
|
|
|
|
34
|
return scalar @{$self->{handlers}}; |
|
21
|
|
|
|
|
67
|
|
455
|
|
|
|
|
|
|
} |
456
|
|
|
|
|
|
|
|
457
|
|
|
|
0
|
|
|
sub Signals::XSIG::TieArray::STORESIZE { } |
458
|
|
|
|
|
|
|
|
459
|
|
|
|
2
|
|
|
sub Signals::XSIG::TieArray::EXTEND { } |
460
|
|
|
|
|
|
|
|
461
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::EXISTS { |
462
|
0
|
|
|
0
|
|
0
|
my ($self, $index) = @_; |
463
|
0
|
0
|
|
|
|
0
|
return if $index < $self->{start}; |
464
|
0
|
|
|
|
|
0
|
return exists $self->{handlers}[$index - $self->{start}]; |
465
|
|
|
|
|
|
|
} |
466
|
|
|
|
|
|
|
|
467
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::DELETE { |
468
|
4
|
|
|
4
|
|
13
|
my ($self, $index) = @_; |
469
|
4
|
|
|
|
|
10
|
$index -= $self->{start}; |
470
|
4
|
50
|
|
|
|
16
|
return if $index < 0; |
471
|
4
|
|
|
|
|
11
|
my $old = $self->{handlers}[$index]; |
472
|
4
|
|
|
|
|
9
|
$self->{handlers}[$index] = undef; |
473
|
4
|
|
|
|
|
13
|
$self->_refresh_SIG; |
474
|
4
|
|
|
|
|
12
|
return $old; |
475
|
|
|
|
|
|
|
} |
476
|
|
|
|
|
|
|
|
477
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::CLEAR { |
478
|
2
|
|
|
2
|
|
7
|
my ($self) = @_; |
479
|
2
|
|
|
|
|
6
|
$self->{handlers} = []; |
480
|
2
|
|
|
|
|
6
|
$self->{start} = 0; |
481
|
2
|
|
|
|
|
8
|
$self->_refresh_SIG; |
482
|
2
|
|
|
|
|
8
|
return; |
483
|
|
|
|
|
|
|
} |
484
|
|
|
|
|
|
|
|
485
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::UNSHIFT { |
486
|
4
|
|
|
4
|
|
16
|
my ($self, @list) = @_; |
487
|
4
|
|
|
|
|
7
|
unshift @{$self->{handlers}}, @list; |
|
4
|
|
|
|
|
13
|
|
488
|
4
|
|
|
|
|
10
|
$self->{start} -= @list; |
489
|
4
|
|
|
|
|
12
|
$self->_refresh_SIG; |
490
|
4
|
|
|
|
|
12
|
return $self->FETCHSIZE; |
491
|
|
|
|
|
|
|
} |
492
|
|
|
|
|
|
|
|
493
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::POP { |
494
|
5
|
|
|
5
|
|
11
|
my ($self) = @_; |
495
|
5
|
100
|
|
|
|
9
|
if (@{$self->{handlers}} + $self->{start} <= 1) { |
|
5
|
|
|
|
|
19
|
|
496
|
1
|
|
|
|
|
3
|
return; |
497
|
|
|
|
|
|
|
} |
498
|
4
|
|
|
|
|
9
|
my $val = pop @{$self->{handlers}}; |
|
4
|
|
|
|
|
15
|
|
499
|
4
|
|
|
|
|
12
|
$self->_refresh_SIG; |
500
|
4
|
|
|
|
|
11
|
return $val; |
501
|
|
|
|
|
|
|
} |
502
|
|
|
|
|
|
|
|
503
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::SHIFT { |
504
|
4
|
|
|
4
|
|
10
|
my $self = shift; |
505
|
4
|
100
|
|
|
|
14
|
if ($self->{start} >= 0) { |
506
|
2
|
|
|
|
|
5
|
return; |
507
|
|
|
|
|
|
|
} |
508
|
2
|
|
|
|
|
4
|
my $val = shift @{$self->{handlers}}; |
|
2
|
|
|
|
|
5
|
|
509
|
2
|
|
|
|
|
5
|
$self->{start}++; |
510
|
2
|
|
|
|
|
7
|
$self->_refresh_SIG; |
511
|
2
|
|
|
|
|
7
|
return $val; |
512
|
|
|
|
|
|
|
} |
513
|
|
|
|
|
|
|
|
514
|
|
|
|
|
|
|
sub Signals::XSIG::TieArray::PUSH { |
515
|
7
|
|
|
7
|
|
30
|
my ($self, @list) = @_; |
516
|
7
|
100
|
|
|
|
16
|
if (@{$self->{handlers}} + $self->{start} <= 0) { |
|
7
|
|
|
|
|
29
|
|
517
|
2
|
|
|
|
|
8
|
unshift @list, undef; |
518
|
|
|
|
|
|
|
} |
519
|
7
|
|
|
|
|
16
|
my $val = push @{$self->{handlers}}, @list; |
|
7
|
|
|
|
|
21
|
|
520
|
7
|
|
|
|
|
24
|
$self->_refresh_SIG; |
521
|
7
|
|
|
|
|
22
|
return $val; |
522
|
|
|
|
|
|
|
} |
523
|
|
|
|
|
|
|
|
524
|
|
|
|
0
|
|
|
sub Signals::XSIG::TieArray::SPLICE { } |
525
|
|
|
|
|
|
|
|
526
|
|
|
|
|
|
|
################################################################## |
527
|
|
|
|
|
|
|
# |
528
|
|
|
|
|
|
|
# Signals::XSIG::TieScalar |
529
|
|
|
|
|
|
|
# |
530
|
|
|
|
|
|
|
# For tie-ing $XSIG{signal}. |
531
|
|
|
|
|
|
|
# Handles expressions like $XSIG{signal} = [ ... ] |
532
|
|
|
|
|
|
|
# and $XSIG{signal} = handler |
533
|
|
|
|
|
|
|
# Main purpose is to assert that $XSIG{$sig} is always set |
534
|
|
|
|
|
|
|
# to a reference to a Signals::XSIG::TieArray object. |
535
|
|
|
|
|
|
|
# |
536
|
|
|
|
|
|
|
|
537
|
|
|
|
|
|
|
sub Signals::XSIG::TieScalar::TIESCALAR { |
538
|
852
|
|
|
852
|
|
1873
|
my ($class, @list) = @_; |
539
|
852
|
|
|
|
|
1414
|
my $key = $list[0]; |
540
|
852
|
100
|
100
|
|
|
2461
|
if (defined($alias{$key}) && !defined($alias{"pk:$key"})) { |
541
|
48
|
|
|
|
|
187
|
return $TIEDSCALARS{$key} = $TIEDSCALARS{$alias{$key}}; |
542
|
|
|
|
|
|
|
} |
543
|
|
|
|
|
|
|
|
544
|
804
|
|
|
|
|
1995
|
my $self = bless { key => $key }, 'Signals::XSIG::TieScalar'; |
545
|
804
|
|
|
|
|
1611
|
$self->{val} = []; |
546
|
804
|
|
|
|
|
1128
|
tie @{$self->{val}}, $TIEARRAY_CLASS, $key; |
|
804
|
|
|
|
|
1840
|
|
547
|
804
|
|
|
|
|
3018
|
$self->{val}[0] = $SIG{$key}; |
548
|
804
|
|
|
|
|
1740
|
$TIEDSCALARS{$key} = $self; |
549
|
804
|
|
|
|
|
1977
|
return $self; |
550
|
|
|
|
|
|
|
} |
551
|
|
|
|
|
|
|
|
552
|
|
|
|
|
|
|
sub Signals::XSIG::TieScalar::FETCH { |
553
|
10273
|
|
|
10273
|
|
15489
|
my $self = shift; |
554
|
10273
|
|
|
|
|
16993
|
my $key = my $key2 = $self->{key}; |
555
|
10273
|
|
|
|
|
21011
|
Signals::XSIG::_resolve_signal($key); |
556
|
10273
|
50
|
33
|
|
|
32492
|
if ($key ne $key2 && !$self->{copied}) { |
|
|
50
|
|
|
|
|
|
557
|
0
|
|
|
|
|
0
|
$self->{val} = (tied $Signals::XSIG::_XSIG{$key})->FETCH; |
558
|
0
|
|
|
|
|
0
|
$self->{copied} = $key; |
559
|
0
|
|
|
|
|
0
|
push @{(tied $Signals::XSIG::_XSIG{$key})->{aliases}}, $key2; |
|
0
|
|
|
|
|
0
|
|
560
|
|
|
|
|
|
|
} elsif ($self->{copied}) { |
561
|
0
|
|
|
|
|
0
|
$self->{val} = $Signals::XSIG::_XSIG{ $self->{copied} }; |
562
|
|
|
|
|
|
|
} |
563
|
10273
|
|
|
|
|
30123
|
return $self->{val}; |
564
|
|
|
|
|
|
|
} |
565
|
|
|
|
|
|
|
|
566
|
|
|
|
|
|
|
# $XSIG{key} = [ LIST ] ==> store LIST, tie LIST as TieArray |
567
|
|
|
|
|
|
|
# $XSIG{key} = EXPR ==> treat as $SIG{key}=EXPR,$XSIG{key}[0]=EXPR |
568
|
|
|
|
|
|
|
sub Signals::XSIG::TieScalar::STORE { |
569
|
29
|
|
|
29
|
|
59
|
my ($self, $value) = @_; |
570
|
29
|
|
|
|
|
56
|
my $old = $self->{val}; |
571
|
|
|
|
|
|
|
|
572
|
29
|
50
|
|
|
|
77
|
if (ref $value ne 'ARRAY') { |
573
|
0
|
|
|
|
|
0
|
$value = [ $value ]; |
574
|
|
|
|
|
|
|
} |
575
|
|
|
|
|
|
|
|
576
|
29
|
|
|
|
|
49
|
my $key = $self->{key}; |
577
|
29
|
|
|
|
|
53
|
$self->{val} = []; |
578
|
29
|
|
|
|
|
55
|
tie @{$self->{val}}, $TIEARRAY_CLASS, $self->{key}, @$value; |
|
29
|
|
|
|
|
115
|
|
579
|
29
|
|
|
|
|
54
|
(tied @{$self->{val}})->_refresh_SIG; |
|
29
|
|
|
|
|
84
|
|
580
|
29
|
|
|
|
|
68
|
return $old; |
581
|
|
|
|
|
|
|
} |
582
|
|
|
|
|
|
|
|
583
|
|
|
|
|
|
|
################################################################## |
584
|
|
|
|
|
|
|
# |
585
|
|
|
|
|
|
|
# Signals::XSIG::TieXSIG |
586
|
|
|
|
|
|
|
# |
587
|
|
|
|
|
|
|
# Only for tie-ing %XSIG. |
588
|
|
|
|
|
|
|
# adds behavior to %XSIG hash so we can make assignments to |
589
|
|
|
|
|
|
|
# $XSIG{sig} so that @{$XSIG{$sig}} is always a |
590
|
|
|
|
|
|
|
# Signals::XSIG::TieArray |
591
|
|
|
|
|
|
|
# |
592
|
|
|
|
|
|
|
|
593
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::TIEHASH { |
594
|
12
|
|
|
12
|
|
38
|
return $XSIGTIE; |
595
|
|
|
|
|
|
|
} |
596
|
|
|
|
|
|
|
|
597
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::FETCH { |
598
|
267
|
|
|
267
|
|
9546
|
my ($self,$key) = @_; |
599
|
267
|
|
|
|
|
644
|
_resolve_signal($key,1); |
600
|
267
|
|
|
|
|
670
|
return $_XSIG{$key}; |
601
|
|
|
|
|
|
|
} |
602
|
|
|
|
|
|
|
|
603
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::STORE { |
604
|
27
|
|
|
27
|
|
1876
|
my ($self, $key, $value) = @_; |
605
|
27
|
|
|
|
|
73
|
_resolve_signal($key,1); |
606
|
27
|
|
|
|
|
67
|
my $old = $_XSIG{$key}; |
607
|
|
|
|
|
|
|
# (tied $_XSIG{$key})->STORE($key,$value); # |
608
|
27
|
|
|
|
|
74
|
$_XSIG{$key} = $value; |
609
|
27
|
|
|
|
|
121
|
return $old; |
610
|
|
|
|
|
|
|
} |
611
|
|
|
|
|
|
|
|
612
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::DELETE { |
613
|
0
|
|
|
0
|
|
0
|
my ($self, $key) = @_; |
614
|
0
|
|
|
|
|
0
|
_resolve_signal($key,1); |
615
|
0
|
|
|
|
|
0
|
my $old = $_XSIG{$key}; |
616
|
0
|
|
|
|
|
0
|
$XSIG{$key} = []; |
617
|
0
|
|
|
|
|
0
|
return $old; |
618
|
|
|
|
|
|
|
} |
619
|
|
|
|
|
|
|
|
620
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::CLEAR { |
621
|
2
|
|
|
2
|
|
204
|
my ($self) = @_; |
622
|
|
|
|
|
|
|
|
623
|
2
|
|
|
|
|
5
|
my @aliases = (); |
624
|
2
|
|
|
|
|
52
|
for my $xsig (keys %_XSIG) { |
625
|
144
|
|
|
|
|
194
|
my $osig = $xsig; |
626
|
144
|
100
|
|
|
|
223
|
if (_resolve_signal($xsig, 1)) { |
627
|
142
|
100
|
|
|
|
229
|
if ($osig ne $xsig) { |
628
|
8
|
|
|
|
|
20
|
push @aliases, [$xsig, $osig]; |
629
|
|
|
|
|
|
|
} else { |
630
|
134
|
|
|
|
|
287
|
$XSIG{$xsig} = []; |
631
|
|
|
|
|
|
|
} |
632
|
|
|
|
|
|
|
} else { |
633
|
2
|
|
|
|
|
5
|
delete $_XSIG{$xsig}; |
634
|
|
|
|
|
|
|
} |
635
|
|
|
|
|
|
|
} |
636
|
2
|
|
|
|
|
10
|
foreach my $pair (@aliases) { |
637
|
8
|
|
|
|
|
16
|
my ($xsig, $alias) = @$pair; |
638
|
8
|
|
|
|
|
34
|
$_XSIG{$alias} = $_XSIG{$xsig}; |
639
|
|
|
|
|
|
|
} |
640
|
2
|
|
|
|
|
11
|
return; |
641
|
|
|
|
|
|
|
} |
642
|
|
|
|
|
|
|
|
643
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::EXISTS { |
644
|
3
|
|
|
3
|
|
14
|
my ($self,$key) = @_; |
645
|
3
|
|
|
|
|
8
|
_resolve_signal($key,1); |
646
|
3
|
|
|
|
|
10
|
return exists $_XSIG{$key}; |
647
|
|
|
|
|
|
|
} |
648
|
|
|
|
|
|
|
|
649
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::FIRSTKEY { |
650
|
0
|
|
|
0
|
|
|
my ($self) = @_; |
651
|
0
|
|
|
|
|
|
my $a = keys %_XSIG; |
652
|
0
|
|
|
|
|
|
return each %_XSIG; |
653
|
|
|
|
|
|
|
} |
654
|
|
|
|
|
|
|
|
655
|
|
|
|
|
|
|
sub Signals::XSIG::TieXSIG::NEXTKEY { |
656
|
0
|
|
|
0
|
|
|
my ($self, $lastkey) = @_; |
657
|
0
|
|
|
|
|
|
return each %_XSIG |
658
|
|
|
|
|
|
|
} |
659
|
|
|
|
|
|
|
|
660
|
|
|
|
|
|
|
1; |
661
|
|
|
|
|
|
|
|
662
|
|
|
|
|
|
|
__END__ |