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For Makefile.PL
  Run on Sun Mar 1 16:04:44 2015
Reported on Sun Mar 1 16:09:02 2015

FilenameC:/tmp64ng/perl/lib/constant.pm
StatementsExecuted 824 statements in 0s
Subroutines
Calls P F Exclusive
Time		 Inclusive
Time		 Subroutine
1110s0sconstant::::BEGIN@126constant::BEGIN@126
1110s0sconstant::::BEGIN@2constant::BEGIN@2
1110s0sconstant::::BEGIN@24constant::BEGIN@24
1110s0sconstant::::BEGIN@3constant::BEGIN@3
1110s0sconstant::::BEGIN@39constant::BEGIN@39
1110s0sconstant::::BEGIN@4constant::BEGIN@4
1110s0sconstant::::BEGIN@6constant::BEGIN@6
1110s0sconstant::::BEGIN@64constant::BEGIN@64
33110s0sconstant::::CORE:matchconstant::CORE:match (opcode)
3310s0sconstant::::CORE:qrconstant::CORE:qr (opcode)
33110s0sconstant::::CORE:regcompconstant::CORE:regcomp (opcode)
0000s0sconstant::::__ANON__[:159]constant::__ANON__[:159]
0000s0sconstant::::__ANON__[:175]constant::__ANON__[:175]
0000s0sconstant::::__ANON__[:177]constant::__ANON__[:177]
0000s0sconstant::::__ANON__[:40]constant::__ANON__[:40]
0000s0sconstant::::__ANON__[:41]constant::__ANON__[:41]
0000s0sconstant::::__ANON__[:42]constant::__ANON__[:42]
333340s0sconstant::::importconstant::import
Call graph for these subroutines as a Graphviz dot language file.
Line State
ments		 Time
on line		 Calls Time
in subs		 Code
1package constant;
220s10s
# spent 0s within constant::BEGIN@2 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 2
use 5.008;
# spent 0s making 1 call to constant::BEGIN@2
320s20s
# spent 0s within constant::BEGIN@3 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 3
use strict;
# spent 0s making 1 call to constant::BEGIN@3 # spent 0s making 1 call to strict::import
420s20s
# spent 0s within constant::BEGIN@4 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 4
use warnings::register;
# spent 0s making 1 call to constant::BEGIN@4 # spent 0s making 1 call to warnings::register::import
5
620s20s
# spent 0s within constant::BEGIN@6 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 6
use vars qw($VERSION %declared);
# spent 0s making 1 call to constant::BEGIN@6 # spent 0s making 1 call to vars::import
710s$VERSION = '1.31';
8
9#=======================================================================
10
11# Some names are evil choices.
1210smy %keywords = map +($_, 1), qw{ BEGIN INIT CHECK END DESTROY AUTOLOAD };
1310s$keywords{UNITCHECK}++ if $] > 5.009;
14
1510smy %forced_into_main = map +($_, 1),
16 qw{ STDIN STDOUT STDERR ARGV ARGVOUT ENV INC SIG };
17
1810smy %forbidden = (%keywords, %forced_into_main);
19
2010s10smy $normal_constant_name = qr/^_?[^\W_0-9]\w*\z/;
# spent 0s making 1 call to constant::CORE:qr
2110s10smy $tolerable = qr/^[A-Za-z_]\w*\z/;
# spent 0s making 1 call to constant::CORE:qr
2210s10smy $boolean = qr/^[01]?\z/;
# spent 0s making 1 call to constant::CORE:qr
23
24
# spent 0s within constant::BEGIN@24 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 44
BEGIN {
25 # We'd like to do use constant _CAN_PCS => $] > 5.009002
26 # but that's a bit tricky before we load the constant module :-)
27 # By doing this, we save 1 run time check for *every* call to import.
2810s my $const = $] > 5.009002;
2910s my $downgrade = $] < 5.015004; # && $] >= 5.008
3010s my $constarray = exists &_make_const;
3110s if ($const) {
3210s10s Internals::SvREADONLY($const, 1);
# spent 0s making 1 call to Internals::SvREADONLY
3310s10s Internals::SvREADONLY($downgrade, 1);
# spent 0s making 1 call to Internals::SvREADONLY
3410s $constant::{_CAN_PCS} = \$const;
3510s $constant::{_DOWNGRADE} = \$downgrade;
3610s $constant::{_CAN_PCS_FOR_ARRAY} = \$constarray;
37 }
38 else {
3920s20s
# spent 0s within constant::BEGIN@39 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 39
no strict 'refs';
# spent 0s making 1 call to constant::BEGIN@39 # spent 0s making 1 call to strict::unimport
40 *{"_CAN_PCS"} = sub () {$const};
41 *{"_DOWNGRADE"} = sub () { $downgrade };
42 *{"_CAN_PCS_FOR_ARRAY"} = sub () { $constarray };
43 }
4410s10s}
# spent 0s making 1 call to constant::BEGIN@24
45
46#=======================================================================
47# import() - import symbols into user's namespace
48#
49# What we actually do is define a function in the caller's namespace
50# which returns the value. The function we create will normally
51# be inlined as a constant, thereby avoiding further sub calling
52# overhead.
53#=======================================================================
54
# spent 0s within constant::import which was called 33 times, avg 0s/call: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 127 of File/Spec/Unix.pm # once (0s+0s) by File::Spec::Unix::BEGIN@220 at line 220 of File/Spec/Unix.pm # once (0s+0s) by File::Spec::Unix::BEGIN@242 at line 242 of File/Spec/Unix.pm # once (0s+0s) by File::Spec::Unix::BEGIN@136 at line 136 of File/Spec/Unix.pm # once (0s+0s) by File::Spec::Unix::BEGIN@145 at line 145 of File/Spec/Unix.pm # once (0s+0s) by Encode::Alias::BEGIN@6 at line 6 of Encode/Alias.pm # once (0s+0s) by JSON::PP::BEGIN@41 at line 41 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@27 at line 27 of JSON/PP.pm # once (0s+0s) by JSON::PP::IncrParser::BEGIN@1421 at line 1421 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@31 at line 31 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@43 at line 43 of JSON/PP.pm # once (0s+0s) by JSON::PP::IncrParser::BEGIN@1420 at line 1420 of JSON/PP.pm # once (0s+0s) by JSON::PP::IncrParser::BEGIN@1419 at line 1419 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@37 at line 37 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@28 at line 28 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@35 at line 35 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@34 at line 34 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@21 at line 21 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@25 at line 25 of JSON/PP.pm # once (0s+0s) by JSON::PP::IncrParser::BEGIN@1418 at line 1418 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@36 at line 36 of JSON/PP.pm # once (0s+0s) by JSON::PP::IncrParser::BEGIN@1422 at line 1422 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@32 at line 32 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@23 at line 23 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@22 at line 22 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@39 at line 39 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@30 at line 30 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@29 at line 29 of JSON/PP.pm # once (0s+0s) by JSON::PP::IncrParser::BEGIN@1417 at line 1417 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@38 at line 38 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@24 at line 24 of JSON/PP.pm # once (0s+0s) by JSON::PP::BEGIN@26 at line 26 of JSON/PP.pm # once (0s+0s) by Encode::BEGIN@8 at line 8 of Encode.pm
sub import {
55330s my $class = shift;
56330s return unless @_; # Ignore 'use constant;'
57330s my $constants;
58330s my $multiple = ref $_[0];
59330s my $pkg = caller;
60330s my $flush_mro;
61 my $symtab;
62
63330s if (_CAN_PCS) {
6420s20s
# spent 0s within constant::BEGIN@64 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 64
no strict 'refs';
# spent 0s making 1 call to constant::BEGIN@64 # spent 0s making 1 call to strict::unimport
65330s $symtab = \%{$pkg . '::'};
66 };
67
68330s if ( $multiple ) {
69 if (ref $_[0] ne 'HASH') {
70 require Carp;
71 Carp::croak("Invalid reference type '".ref(shift)."' not 'HASH'");
72 }
73 $constants = shift;
74 } else {
75330s unless (defined $_[0]) {
76 require Carp;
77 Carp::croak("Can't use undef as constant name");
78 }
79330s $constants->{+shift} = undef;
80 }
81
82330s foreach my $name ( keys %$constants ) {
83 # Normal constant name
84330s660s if ($name =~ $normal_constant_name and !$forbidden{$name}) {
# spent 0s making 33 calls to constant::CORE:match, avg 0s/call # spent 0s making 33 calls to constant::CORE:regcomp, avg 0s/call
85 # Everything is okay
86
87 # Name forced into main, but we're not in main. Fatal.
88 } elsif ($forced_into_main{$name} and $pkg ne 'main') {
89 require Carp;
90 Carp::croak("Constant name '$name' is forced into main::");
91
92 # Starts with double underscore. Fatal.
93 } elsif ($name =~ /^__/) {
94 require Carp;
95 Carp::croak("Constant name '$name' begins with '__'");
96
97 # Maybe the name is tolerable
98 } elsif ($name =~ $tolerable) {
99 # Then we'll warn only if you've asked for warnings
100 if (warnings::enabled()) {
101 if ($keywords{$name}) {
102 warnings::warn("Constant name '$name' is a Perl keyword");
103 } elsif ($forced_into_main{$name}) {
104 warnings::warn("Constant name '$name' is " .
105 "forced into package main::");
106 }
107 }
108
109 # Looks like a boolean
110 # use constant FRED == fred;
111 } elsif ($name =~ $boolean) {
112 require Carp;
113 if (@_) {
114 Carp::croak("Constant name '$name' is invalid");
115 } else {
116 Carp::croak("Constant name looks like boolean value");
117 }
118
119 } else {
120 # Must have bad characters
121 require Carp;
122 Carp::croak("Constant name '$name' has invalid characters");
123 }
124
125 {
126350s20s
# spent 0s within constant::BEGIN@126 which was called: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 126
no strict 'refs';
# spent 0s making 1 call to constant::BEGIN@126 # spent 0s making 1 call to strict::unimport
127330s my $full_name = "${pkg}::$name";
128330s $declared{$full_name}++;
129330s if ($multiple || @_ == 1) {
130330s my $scalar = $multiple ? $constants->{$name} : $_[0];
131
132 if (_DOWNGRADE) { # for 5.8 to 5.14
133 # Work around perl bug #31991: Sub names (actually glob
134 # names in general) ignore the UTF8 flag. So we have to
135 # turn it off to get the "right" symbol table entry.
136 utf8::is_utf8 $name and utf8::encode $name;
137 }
138
139 # The constant serves to optimise this entire block out on
140 # 5.8 and earlier.
141330s if (_CAN_PCS) {
142 # Use a reference as a proxy for a constant subroutine.
143 # If this is not a glob yet, it saves space. If it is
144 # a glob, we must still create it this way to get the
145 # right internal flags set, as constants are distinct
146 # from subroutines created with sub(){...}.
147 # The check in Perl_ck_rvconst knows that inlinable
148 # constants from cv_const_sv are read only. So we have to:
149330s330s Internals::SvREADONLY($scalar, 1);
# spent 0s making 33 calls to Internals::SvREADONLY, avg 0s/call
150330s if ($symtab && !exists $symtab->{$name}) {
151330s $symtab->{$name} = \$scalar;
152330s ++$flush_mro;
153 }
154 else {
155 local $constant::{_dummy} = \$scalar;
156 *$full_name = \&{"_dummy"};
157 }
158 } else {
159 *$full_name = sub () { $scalar };
160 }
161 } elsif (@_) {
162 my @list = @_;
163 if (_CAN_PCS_FOR_ARRAY) {
164 _make_const($list[$_]) for 0..$#list;
165 _make_const(@list);
166 if ($symtab && !exists $symtab->{$name}) {
167 $symtab->{$name} = \@list;
168 $flush_mro++;
169 }
170 else {
171 local $constant::{_dummy} = \@list;
172 *$full_name = \&{"_dummy"};
173 }
174 }
175 else { *$full_name = sub () { @list }; }
176 } else {
177 *$full_name = sub () { };
178 }
179 }
180 }
181 # Flush the cache exactly once if we make any direct symbol table changes.
182330s330s mro::method_changed_in($pkg) if _CAN_PCS && $flush_mro;
# spent 0s making 33 calls to mro::method_changed_in, avg 0s/call
183}
184
18510s1;
186
187__END__
 
# spent 0s within constant::CORE:match which was called 33 times, avg 0s/call: # 33 times (0s+0s) by constant::import at line 84, avg 0s/call
sub constant::CORE:match; # opcode
# spent 0s within constant::CORE:qr which was called 3 times, avg 0s/call: # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 20 # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 22 # once (0s+0s) by File::Spec::Unix::BEGIN@127 at line 21
sub constant::CORE:qr; # opcode
# spent 0s within constant::CORE:regcomp which was called 33 times, avg 0s/call: # 33 times (0s+0s) by constant::import at line 84, avg 0s/call
sub constant::CORE:regcomp; # opcode
Report produced by the NYTProf 5.07 Perl profiler, developed by Tim Bunce and Adam Kaplan.