← Index
NYTProf Performance Profile   « line view »
For /Users/brian/bin/perls/cpan5.26.1
  Run on Sat Dec 30 01:41:10 2017
Reported on Sat Dec 30 01:44:15 2017

Filename/usr/local/perls/perl-5.26.1/lib/5.26.1/constant.pm
StatementsExecuted 3870 statements in 5.34ms
Subroutines
Calls P F Exclusive
Time		 Inclusive
Time		 Subroutine
12912973.80ms4.96msconstant::::importconstant::import
12911328µs328µsconstant::::CORE:substconstant::CORE:subst (opcode)
12911286µs286µsconstant::::CORE:matchconstant::CORE:match (opcode)
12911261µs261µsconstant::::CORE:regcompconstant::CORE:regcomp (opcode)
0000s0sconstant::::BEGINconstant::BEGIN
0000s0sconstant::::__ANON__[:174]constant::__ANON__[:174]
0000s0sconstant::::__ANON__[:190]constant::__ANON__[:190]
0000s0sconstant::::__ANON__[:192]constant::__ANON__[:192]
0000s0sconstant::::__ANON__[:41]constant::__ANON__[:41]
0000s0sconstant::::__ANON__[:42]constant::__ANON__[:42]
0000s0sconstant::::__ANON__[:43]constant::__ANON__[:43]
Call graph for these subroutines as a Graphviz dot language file.
Line State
ments		 Time
on line		 Calls Time
in subs		 Code
1package constant;
2use 5.008;
3use strict;
4use warnings::register;
5
6our $VERSION = '1.33';
7our %declared;
8
9#=======================================================================
10
11# Some names are evil choices.
12my %keywords = map +($_, 1), qw{ BEGIN INIT CHECK END DESTROY AUTOLOAD };
13$keywords{UNITCHECK}++ if $] > 5.009;
14
15my %forced_into_main = map +($_, 1),
16 qw{ STDIN STDOUT STDERR ARGV ARGVOUT ENV INC SIG };
17
18my %forbidden = (%keywords, %forced_into_main);
19
20my $normal_constant_name = qr/^_?[^\W_0-9]\w*\z/;
21my $tolerable = qr/^[A-Za-z_]\w*\z/;
22my $boolean = qr/^[01]?\z/;
23
24BEGIN {
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 several run time checks for *every* call
28 # to import.
29 my $const = $] > 5.009002;
30 my $downgrade = $] < 5.015004; # && $] >= 5.008
31 my $constarray = exists &_make_const;
32 if ($const) {
33 Internals::SvREADONLY($const, 1);
34 Internals::SvREADONLY($downgrade, 1);
35 $constant::{_CAN_PCS} = \$const;
36 $constant::{_DOWNGRADE} = \$downgrade;
37 $constant::{_CAN_PCS_FOR_ARRAY} = \$constarray;
38 }
39 else {
40 no strict 'refs';
41 *{"_CAN_PCS"} = sub () {$const};
42 *{"_DOWNGRADE"} = sub () { $downgrade };
43 *{"_CAN_PCS_FOR_ARRAY"} = sub () { $constarray };
44 }
45}
46
47#=======================================================================
48# import() - import symbols into user's namespace
49#
50# What we actually do is define a function in the caller's namespace
51# which returns the value. The function we create will normally
52# be inlined as a constant, thereby avoiding further sub calling
53# overhead.
54#=======================================================================
55
# spent 4.96ms (3.80+1.16) within constant::import which was called 129 times, avg 38µs/call: # once (81µs+24µs) by IO::Compress::Base::Common::BEGIN@45 at line 45 of IO/Compress/Base/Common.pm # once (67µs+25µs) by Archive::Tar::Constant::BEGIN@17 at line 17 of Archive/Tar/Constant.pm # once (64µs+16µs) by IO::Compress::Base::Common::BEGIN@48 at line 48 of IO/Compress/Base/Common.pm # once (42µs+16µs) by IO::Compress::Gzip::Constants::BEGIN@65 at line 65 of IO/Compress/Gzip/Constants.pm # once (40µs+16µs) by Archive::Tar::Constant::BEGIN@74 at line 78 of Archive/Tar/Constant.pm # once (41µs+15µs) by Compress::Zlib::BEGIN@48 at line 48 of Compress/Zlib.pm # once (47µs+8µs) by Archive::Tar::Constant::BEGIN@62 at line 62 of Archive/Tar/Constant.pm # once (45µs+9µs) by Archive::Tar::Constant::BEGIN@18 at line 18 of Archive/Tar/Constant.pm # once (38µs+15µs) by Compress::Raw::Bzip2::BEGIN@55 at line 55 of Compress/Raw/Bzip2.pm # once (42µs+9µs) by Archive::Tar::Constant::BEGIN@33 at line 33 of Archive/Tar/Constant.pm # once (39µs+11µs) by Compress::Raw::Zlib::BEGIN@105 at line 105 of Compress/Raw/Zlib.pm # once (38µs+12µs) by IO::Uncompress::Base::BEGIN@14 at line 14 of IO/Uncompress/Base.pm # once (42µs+8µs) by Archive::Tar::Constant::BEGIN@49 at line 49 of Archive/Tar/Constant.pm # once (36µs+13µs) by IO::Compress::Base::Common::BEGIN@480 at line 480 of IO/Compress/Base/Common.pm # once (39µs+9µs) by Archive::Tar::Constant::BEGIN@52 at line 52 of Archive/Tar/Constant.pm # once (39µs+8µs) by Archive::Tar::Constant::BEGIN@63 at line 63 of Archive/Tar/Constant.pm # once (40µs+7µs) by Archive::Tar::Constant::BEGIN@58 at line 58 of Archive/Tar/Constant.pm # once (37µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@69 at line 69 of IO/Compress/Gzip/Constants.pm # once (34µs+11µs) by IO::Compress::Gzip::Constants::BEGIN@143 at line 145 of IO/Compress/Gzip/Constants.pm # once (35µs+9µs) by U64::BEGIN@835 at line 835 of IO/Compress/Base/Common.pm # once (32µs+10µs) by IO::Compress::Base::Common::BEGIN@49 at line 49 of IO/Compress/Base/Common.pm # once (31µs+11µs) by IO::Compress::Base::Common::BEGIN@46 at line 46 of IO/Compress/Base/Common.pm # once (33µs+9µs) by Archive::Tar::Constant::BEGIN@36 at line 36 of Archive/Tar/Constant.pm # once (31µs+9µs) by Compress::Raw::Zlib::BEGIN@118 at line 118 of Compress/Raw/Zlib.pm # once (30µs+10µs) by Compress::Raw::Bzip2::BEGIN@56 at line 56 of Compress/Raw/Bzip2.pm # once (30µs+10µs) by IO::Compress::Base::Common::BEGIN@148 at line 148 of IO/Compress/Base/Common.pm # once (31µs+9µs) by Archive::Tar::Constant::BEGIN@80 at line 80 of Archive/Tar/Constant.pm # once (32µs+8µs) by Archive::Tar::Constant::BEGIN@19 at line 19 of Archive/Tar/Constant.pm # once (30µs+9µs) by IO::Compress::Gzip::Constants::BEGIN@115 at line 115 of IO/Compress/Gzip/Constants.pm # once (32µs+7µs) by U64::BEGIN@837 at line 837 of IO/Compress/Base/Common.pm # once (31µs+8µs) by Archive::Tar::Constant::BEGIN@38 at line 38 of Archive/Tar/Constant.pm # once (30µs+9µs) by Archive::Tar::Constant::BEGIN@26 at line 26 of Archive/Tar/Constant.pm # once (30µs+9µs) by Archive::Tar::Constant::BEGIN@53 at line 53 of Archive/Tar/Constant.pm # once (30µs+9µs) by Compress::Zlib::BEGIN@50 at line 50 of Compress/Zlib.pm # once (28µs+10µs) by Compress::Raw::Zlib::BEGIN@106 at line 106 of Compress/Raw/Zlib.pm # once (29µs+9µs) by IO::Compress::Base::Common::BEGIN@490 at line 490 of IO/Compress/Base/Common.pm # once (30µs+8µs) by Archive::Tar::Constant::BEGIN@29 at line 29 of Archive/Tar/Constant.pm # once (29µs+9µs) by Archive::Tar::Constant::BEGIN@41 at line 41 of Archive/Tar/Constant.pm # once (30µs+8µs) by Archive::Tar::Constant::BEGIN@31 at line 31 of Archive/Tar/Constant.pm # once (30µs+8µs) by Archive::Tar::Constant::BEGIN@56 at line 56 of Archive/Tar/Constant.pm # once (29µs+8µs) by Compress::Raw::Zlib::BEGIN@122 at line 122 of Compress/Raw/Zlib.pm # once (29µs+8µs) by Compress::Raw::Zlib::BEGIN@119 at line 119 of Compress/Raw/Zlib.pm # once (28µs+9µs) by Compress::Raw::Bzip2::BEGIN@57 at line 57 of Compress/Raw/Bzip2.pm # once (25µs+12µs) by IO::Uncompress::Base::BEGIN@15 at line 15 of IO/Uncompress/Base.pm # once (27µs+10µs) by IO::Compress::Base::Common::BEGIN@481 at line 481 of IO/Compress/Base/Common.pm # once (28µs+9µs) by IO::Compress::Base::Common::BEGIN@149 at line 149 of IO/Compress/Base/Common.pm # once (28µs+9µs) by IO::Compress::Base::Common::BEGIN@150 at line 150 of IO/Compress/Base/Common.pm # once (29µs+8µs) by U64::BEGIN@836 at line 836 of IO/Compress/Base/Common.pm # once (29µs+8µs) by IO::Compress::Base::Common::BEGIN@493 at line 493 of IO/Compress/Base/Common.pm # once (27µs+10µs) by Archive::Tar::Constant::BEGIN@84 at line 84 of Archive/Tar/Constant.pm # once (29µs+8µs) by Archive::Tar::Constant::BEGIN@83 at line 83 of Archive/Tar/Constant.pm # once (29µs+8µs) by Archive::Tar::Constant::BEGIN@22 at line 22 of Archive/Tar/Constant.pm # once (29µs+8µs) by Archive::Tar::Constant::BEGIN@21 at line 21 of Archive/Tar/Constant.pm # once (29µs+8µs) by Archive::Tar::Constant::BEGIN@48 at line 48 of Archive/Tar/Constant.pm # once (28µs+8µs) by Compress::Raw::Bzip2::BEGIN@58 at line 58 of Compress/Raw/Bzip2.pm # once (27µs+9µs) by IO::Compress::Gzip::Constants::BEGIN@109 at line 109 of IO/Compress/Gzip/Constants.pm # once (29µs+7µs) by Archive::Tar::Constant::BEGIN@54 at line 54 of Archive/Tar/Constant.pm # once (29µs+7µs) by Archive::Tar::Constant::BEGIN@47 at line 47 of Archive/Tar/Constant.pm # once (28µs+8µs) by Archive::Tar::Constant::BEGIN@64 at line 64 of Archive/Tar/Constant.pm # once (27µs+9µs) by Archive::Tar::Constant::BEGIN@25 at line 25 of Archive/Tar/Constant.pm # once (27µs+9µs) by Archive::Tar::Constant::BEGIN@50 at line 50 of Archive/Tar/Constant.pm # once (28µs+8µs) by Archive::Tar::Constant::BEGIN@23 at line 23 of Archive/Tar/Constant.pm # once (27µs+8µs) by Compress::Raw::Zlib::BEGIN@149 at line 149 of Compress/Raw/Zlib.pm # once (26µs+9µs) by Compress::Raw::Zlib::BEGIN@121 at line 121 of Compress/Raw/Zlib.pm # once (26µs+9µs) by Compress::Raw::Zlib::BEGIN@139 at line 139 of Compress/Raw/Zlib.pm # once (28µs+7µs) by Compress::Raw::Zlib::BEGIN@136 at line 136 of Compress/Raw/Zlib.pm # once (27µs+8µs) by Compress::Raw::Zlib::BEGIN@148 at line 148 of Compress/Raw/Zlib.pm # once (27µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@70 at line 70 of IO/Compress/Gzip/Constants.pm # once (26µs+9µs) by IO::Compress::Gzip::Constants::BEGIN@88 at line 88 of IO/Compress/Gzip/Constants.pm # once (26µs+9µs) by IO::Compress::Base::Common::BEGIN@483 at line 483 of IO/Compress/Base/Common.pm # once (27µs+8µs) by IO::Compress::Base::Common::BEGIN@499 at line 499 of IO/Compress/Base/Common.pm # once (27µs+8µs) by IO::Compress::Base::Common::BEGIN@500 at line 500 of IO/Compress/Base/Common.pm # once (27µs+8µs) by IO::Compress::Base::Common::BEGIN@494 at line 494 of IO/Compress/Base/Common.pm # once (25µs+10µs) by IO::Compress::Base::Common::BEGIN@47 at line 47 of IO/Compress/Base/Common.pm # once (27µs+8µs) by Archive::Tar::Constant::BEGIN@24 at line 24 of Archive/Tar/Constant.pm # once (27µs+8µs) by Archive::Tar::Constant::BEGIN@37 at line 37 of Archive/Tar/Constant.pm # once (26µs+9µs) by Archive::Tar::Constant::BEGIN@61 at line 61 of Archive/Tar/Constant.pm # once (27µs+8µs) by Archive::Tar::Constant::BEGIN@85 at line 85 of Archive/Tar/Constant.pm # once (27µs+8µs) by Archive::Tar::Constant::BEGIN@20 at line 20 of Archive/Tar/Constant.pm # once (27µs+8µs) by Archive::Tar::Constant::BEGIN@86 at line 86 of Archive/Tar/Constant.pm # once (25µs+10µs) by Compress::Zlib::BEGIN@49 at line 49 of Compress/Zlib.pm # once (27µs+8µs) by Compress::Zlib::BEGIN@51 at line 51 of Compress/Zlib.pm # once (26µs+8µs) by Compress::Raw::Zlib::BEGIN@120 at line 120 of Compress/Raw/Zlib.pm # once (27µs+7µs) by IO::Compress::Gzip::Constants::BEGIN@92 at line 93 of IO/Compress/Gzip/Constants.pm # once (26µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@119 at line 119 of IO/Compress/Gzip/Constants.pm # once (25µs+9µs) by IO::Compress::Gzip::Constants::BEGIN@67 at line 67 of IO/Compress/Gzip/Constants.pm # once (25µs+9µs) by IO::Compress::Gzip::Constants::BEGIN@66 at line 66 of IO/Compress/Gzip/Constants.pm # once (27µs+7µs) by IO::Compress::Gzip::Constants::BEGIN@78 at line 78 of IO/Compress/Gzip/Constants.pm # once (25µs+9µs) by IO::Compress::Gzip::Constants::BEGIN@90 at line 91 of IO/Compress/Gzip/Constants.pm # once (26µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@80 at line 80 of IO/Compress/Gzip/Constants.pm # once (26µs+8µs) by IO::Compress::Base::Common::BEGIN@482 at line 482 of IO/Compress/Base/Common.pm # once (26µs+8µs) by IO::Compress::Base::Common::BEGIN@50 at line 50 of IO/Compress/Base/Common.pm # once (26µs+8µs) by IO::Compress::Base::Common::BEGIN@484 at line 484 of IO/Compress/Base/Common.pm # once (26µs+8µs) by Archive::Tar::Constant::BEGIN@27 at line 27 of Archive/Tar/Constant.pm # once (27µs+7µs) by Archive::Tar::Constant::BEGIN@42 at line 42 of Archive/Tar/Constant.pm # once (26µs+7µs) by Compress::Raw::Zlib::BEGIN@150 at line 150 of Compress/Raw/Zlib.pm # once (25µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@75 at line 75 of IO/Compress/Gzip/Constants.pm # once (25µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@74 at line 74 of IO/Compress/Gzip/Constants.pm # once (25µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@77 at line 77 of IO/Compress/Gzip/Constants.pm # once (24µs+9µs) by IO::Compress::Base::Common::BEGIN@485 at line 485 of IO/Compress/Base/Common.pm # once (25µs+8µs) by IO::Compress::Base::Common::BEGIN@492 at line 492 of IO/Compress/Base/Common.pm # once (25µs+8µs) by IO::Compress::Base::Common::BEGIN@489 at line 489 of IO/Compress/Base/Common.pm # once (25µs+8µs) by Archive::Tar::Constant::BEGIN@65 at line 65 of Archive/Tar/Constant.pm # once (25µs+8µs) by Archive::Tar::Constant::BEGIN@57 at line 57 of Archive/Tar/Constant.pm # once (25µs+8µs) by Archive::Tar::Constant::BEGIN@30 at line 30 of Archive/Tar/Constant.pm # once (26µs+7µs) by Archive::Tar::Constant::BEGIN@34 at line 34 of Archive/Tar/Constant.pm # once (26µs+7µs) by Archive::Tar::Constant::BEGIN@40 at line 40 of Archive/Tar/Constant.pm # once (24µs+9µs) by Archive::Tar::Constant::BEGIN@81 at line 81 of Archive/Tar/Constant.pm # once (24µs+9µs) by Archive::Tar::Constant::BEGIN@59 at line 59 of Archive/Tar/Constant.pm # once (25µs+7µs) by Compress::Raw::Zlib::BEGIN@145 at line 145 of Compress/Raw/Zlib.pm # once (24µs+8µs) by Compress::Raw::Zlib::BEGIN@146 at line 146 of Compress/Raw/Zlib.pm # once (24µs+8µs) by Compress::Raw::Zlib::BEGIN@138 at line 138 of Compress/Raw/Zlib.pm # once (24µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@76 at line 76 of IO/Compress/Gzip/Constants.pm # once (25µs+7µs) by IO::Compress::Gzip::Constants::BEGIN@114 at line 114 of IO/Compress/Gzip/Constants.pm # once (25µs+7µs) by IO::Compress::Gzip::Constants::BEGIN@87 at line 87 of IO/Compress/Gzip/Constants.pm # once (24µs+8µs) by IO::Compress::Base::Common::BEGIN@152 at line 152 of IO/Compress/Base/Common.pm # once (24µs+8µs) by U64::BEGIN@838 at line 838 of IO/Compress/Base/Common.pm # once (24µs+8µs) by IO::Compress::Base::Common::BEGIN@51 at line 51 of IO/Compress/Base/Common.pm # once (23µs+8µs) by Compress::Raw::Zlib::BEGIN@137 at line 137 of Compress/Raw/Zlib.pm # once (23µs+8µs) by Compress::Raw::Zlib::BEGIN@147 at line 147 of Compress/Raw/Zlib.pm # once (23µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@86 at line 86 of IO/Compress/Gzip/Constants.pm # once (22µs+9µs) by IO::Compress::Gzip::Constants::BEGIN@89 at line 89 of IO/Compress/Gzip/Constants.pm # once (24µs+7µs) by IO::Compress::Gzip::Constants::BEGIN@82 at line 82 of IO/Compress/Gzip/Constants.pm # once (24µs+7µs) by IO::Compress::Gzip::Constants::BEGIN@113 at line 113 of IO/Compress/Gzip/Constants.pm # once (23µs+8µs) by IO::Compress::Base::Common::BEGIN@495 at line 495 of IO/Compress/Base/Common.pm # once (23µs+8µs) by Archive::Tar::Constant::BEGIN@68 at line 71 of Archive/Tar/Constant.pm # once (22µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@84 at line 84 of IO/Compress/Gzip/Constants.pm # once (22µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@73 at line 73 of IO/Compress/Gzip/Constants.pm # once (22µs+8µs) by IO::Compress::Gzip::Constants::BEGIN@111 at line 111 of IO/Compress/Gzip/Constants.pm
sub import {
5612966µs my $class = shift;
5712947µs return unless @_; # Ignore 'use constant;'
5812921µs my $constants;
5912956µs my $multiple = ref $_[0];
6012962µs my $caller = caller;
6112926µs my $flush_mro;
62 my $symtab;
63
6412956µs if (_CAN_PCS) {
65 no strict 'refs';
66129159µs $symtab = \%{$caller . '::'};
67 };
68
6912933µs if ( $multiple ) {
70 if (ref $_[0] ne 'HASH') {
71 require Carp;
72 Carp::croak("Invalid reference type '".ref(shift)."' not 'HASH'");
73 }
74 $constants = shift;
75 } else {
7612927µs unless (defined $_[0]) {
77 require Carp;
78 Carp::croak("Can't use undef as constant name");
79 }
80129219µs $constants->{+shift} = undef;
81 }
82
83129198µs foreach my $name ( keys %$constants ) {
8412914µs my $pkg;
8512929µs my $symtab = $symtab;
8612931µs my $orig_name = $name;
87129682µs129328µs if ($name =~ s/(.*)(?:::|')(?=.)//s) {
# spent 328µs making 129 calls to constant::CORE:subst, avg 3µs/call
88 $pkg = $1;
89 if (_CAN_PCS && $pkg ne $caller) {
90 no strict 'refs';
91 $symtab = \%{$pkg . '::'};
92 }
93 }
94 else {
9512934µs $pkg = $caller;
96 }
97
98 # Normal constant name
991291.01ms258547µs if ($name =~ $normal_constant_name and !$forbidden{$name}) {
# spent 286µs making 129 calls to constant::CORE:match, avg 2µs/call # spent 261µs making 129 calls to constant::CORE:regcomp, avg 2µs/call
100 # Everything is okay
101
102 # Name forced into main, but we're not in main. Fatal.
103 } elsif ($forced_into_main{$name} and $pkg ne 'main') {
104 require Carp;
105 Carp::croak("Constant name '$name' is forced into main::");
106
107 # Starts with double underscore. Fatal.
108 } elsif ($name =~ /^__/) {
109 require Carp;
110 Carp::croak("Constant name '$name' begins with '__'");
111
112 # Maybe the name is tolerable
113 } elsif ($name =~ $tolerable) {
114 # Then we'll warn only if you've asked for warnings
115 if (warnings::enabled()) {
116 if ($keywords{$name}) {
117 warnings::warn("Constant name '$name' is a Perl keyword");
118 } elsif ($forced_into_main{$name}) {
119 warnings::warn("Constant name '$name' is " .
120 "forced into package main::");
121 }
122 }
123
124 # Looks like a boolean
125 # use constant FRED == fred;
126 } elsif ($name =~ $boolean) {
127 require Carp;
128 if (@_) {
129 Carp::croak("Constant name '$name' is invalid");
130 } else {
131 Carp::croak("Constant name looks like boolean value");
132 }
133
134 } else {
135 # Must have bad characters
136 require Carp;
137 Carp::croak("Constant name '$name' has invalid characters");
138 }
139
140 {
141129100µs no strict 'refs';
14212986µs my $full_name = "${pkg}::$name";
143129258µs $declared{$full_name}++;
14412985µs if ($multiple || @_ == 1) {
14512946µs my $scalar = $multiple ? $constants->{$orig_name} : $_[0];
146
147 if (_DOWNGRADE) { # for 5.8 to 5.14
148 # Work around perl bug #31991: Sub names (actually glob
149 # names in general) ignore the UTF8 flag. So we have to
150 # turn it off to get the "right" symbol table entry.
151 utf8::is_utf8 $name and utf8::encode $name;
152 }
153
154 # The constant serves to optimise this entire block out on
155 # 5.8 and earlier.
15612943µs if (_CAN_PCS) {
157 # Use a reference as a proxy for a constant subroutine.
158 # If this is not a glob yet, it saves space. If it is
159 # a glob, we must still create it this way to get the
160 # right internal flags set, as constants are distinct
161 # from subroutines created with sub(){...}.
162 # The check in Perl_ck_rvconst knows that inlinable
163 # constants from cv_const_sv are read only. So we have to:
164129435µs129137µs Internals::SvREADONLY($scalar, 1);
# spent 137µs making 129 calls to Internals::SvREADONLY, avg 1µs/call
16512984µs if (!exists $symtab->{$name}) {
16612976µs $symtab->{$name} = \$scalar;
16712978µs ++$flush_mro->{$pkg};
168 }
169 else {
170 local $constant::{_dummy} = \$scalar;
171 *$full_name = \&{"_dummy"};
172 }
173 } else {
174 *$full_name = sub () { $scalar };
175 }
176 } elsif (@_) {
177 my @list = @_;
178 if (_CAN_PCS_FOR_ARRAY) {
179 _make_const($list[$_]) for 0..$#list;
180 _make_const(@list);
181 if (!exists $symtab->{$name}) {
182 $symtab->{$name} = \@list;
183 $flush_mro->{$pkg}++;
184 }
185 else {
186 local $constant::{_dummy} = \@list;
187 *$full_name = \&{"_dummy"};
188 }
189 }
190 else { *$full_name = sub () { @list }; }
191 } else {
192 *$full_name = sub () { };
193 }
194 }
195 }
196 # Flush the cache exactly once if we make any direct symbol table changes.
197129678µs if (_CAN_PCS && $flush_mro) {
198129606µs129144µs mro::method_changed_in($_) for keys %$flush_mro;
# spent 144µs making 129 calls to mro::method_changed_in, avg 1µs/call
199 }
200}
201
2021;
203
204__END__
 
# spent 286µs within constant::CORE:match which was called 129 times, avg 2µs/call: # 129 times (286µs+0s) by constant::import at line 99, avg 2µs/call
sub constant::CORE:match; # opcode
# spent 261µs within constant::CORE:regcomp which was called 129 times, avg 2µs/call: # 129 times (261µs+0s) by constant::import at line 99, avg 2µs/call
sub constant::CORE:regcomp; # opcode
# spent 328µs within constant::CORE:subst which was called 129 times, avg 3µs/call: # 129 times (328µs+0s) by constant::import at line 87, avg 3µs/call
sub constant::CORE:subst; # opcode
Report produced by the NYTProf 6.04 Perl profiler, developed by Tim Bunce based on work by Adam Kaplan and Salvador Fandiño García.