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For webmerge/scripts/webmerge.pl
  Run on Mon Oct 7 02:42:42 2013
Reported on Mon Oct 7 03:03:17 2013

Filename/usr/lib64/perl5/5.16.0/Exporter/Heavy.pm
StatementsExecuted 1189 statements in 27.8ms
Subroutines
Calls P F Exclusive
Time		 Inclusive
Time		 Subroutine
461116.2ms18.7msExporter::Heavy::::heavy_exportExporter::Heavy::heavy_export
231611.32ms1.32msExporter::Heavy::::CORE:substExporter::Heavy::CORE:subst (opcode)
211722µs806µsExporter::Heavy::::_rebuild_cacheExporter::Heavy::_rebuild_cache
8131368µs368µsExporter::Heavy::::CORE:matchExporter::Heavy::CORE:match (opcode)
411259µs4.85msExporter::Heavy::::heavy_export_to_levelExporter::Heavy::heavy_export_to_level
11194µs94µsExporter::Heavy::::_push_tagsExporter::Heavy::_push_tags
11181µs175µsExporter::Heavy::::BEGIN@3Exporter::Heavy::BEGIN@3
11180µs155µsExporter::Heavy::::BEGIN@197Exporter::Heavy::BEGIN@197
11146µs105µsExporter::Heavy::::BEGIN@4Exporter::Heavy::BEGIN@4
11140µs134µsExporter::Heavy::::heavy_export_tagsExporter::Heavy::heavy_export_tags
0000s0sExporter::Heavy::::__ANON__[:52]Exporter::Heavy::__ANON__[:52]
0000s0sExporter::Heavy::::__ANON__[:58]Exporter::Heavy::__ANON__[:58]
0000s0sExporter::Heavy::::heavy_export_ok_tagsExporter::Heavy::heavy_export_ok_tags
0000s0sExporter::Heavy::::heavy_require_versionExporter::Heavy::heavy_require_version
Call graph for these subroutines as a Graphviz dot language file.
Line State
ments		 Time
on line		 Calls Time
in subs		 Code
1package Exporter::Heavy;
2
32158µs2269µs
# spent 175µs (81+94) within Exporter::Heavy::BEGIN@3 which was called: # once (81µs+94µs) by Exporter::as_heavy at line 3
use strict;
# spent 175µs making 1 call to Exporter::Heavy::BEGIN@3 # spent 94µs making 1 call to strict::import
425.94ms2164µs
# spent 105µs (46+59) within Exporter::Heavy::BEGIN@4 which was called: # once (46µs+59µs) by Exporter::as_heavy at line 4
no strict 'refs';
# spent 105µs making 1 call to Exporter::Heavy::BEGIN@4 # spent 59µs making 1 call to strict::unimport
5
6# On one line so MakeMaker will see it.
728µsrequire Exporter; our $VERSION = $Exporter::VERSION;
8
9=head1 NAME
10
11Exporter::Heavy - Exporter guts
12
13=head1 SYNOPSIS
14
15(internal use only)
16
17=head1 DESCRIPTION
18
19No user-serviceable parts inside.
20
21=cut
22
23#
24# We go to a lot of trouble not to 'require Carp' at file scope,
25# because Carp requires Exporter, and something has to give.
26#
27
28
# spent 806µs (722+83) within Exporter::Heavy::_rebuild_cache which was called 2 times, avg 403µs/call: # 2 times (722µs+83µs) by Exporter::Heavy::heavy_export at line 67, avg 403µs/call
sub _rebuild_cache {
2929µs my ($pkg, $exports, $cache) = @_;
302366µs3048µs s/^&// foreach @$exports;
# spent 48µs making 30 calls to Exporter::Heavy::CORE:subst, avg 2µs/call
31261µs @{$cache}{@$exports} = (1) x @$exports;
32232µs my $ok = \@{"${pkg}::EXPORT_OK"};
33249µs if (@$ok) {
341275µs2435µs s/^&// foreach @$ok;
# spent 35µs making 24 calls to Exporter::Heavy::CORE:subst, avg 1µs/call
35121µs @{$cache}{@$ok} = (1) x @$ok;
36 }
37}
38
39
# spent 18.7ms (16.2+2.41) within Exporter::Heavy::heavy_export which was called 46 times, avg 405µs/call: # 46 times (16.2ms+2.41ms) by Exporter::Heavy::heavy_export_to_level or Exporter::import at line 25 of Exporter.pm, avg 405µs/call
sub heavy_export {
40
41 # First make import warnings look like they're coming from the "use".
42 local $SIG{__WARN__} = sub {
43 my $text = shift;
44 if ($text =~ s/ at \S*Exporter\S*.pm line \d+.*\n//) {
45 require Carp;
46 local $Carp::CarpLevel = 1; # ignore package calling us too.
47 Carp::carp($text);
48 }
49 else {
50 warn $text;
51 }
52461.26ms };
53 local $SIG{__DIE__} = sub {
54 require Carp;
55 local $Carp::CarpLevel = 1; # ignore package calling us too.
56 Carp::croak("$_[0]Illegal null symbol in \@${1}::EXPORT")
57 if $_[0] =~ /^Unable to create sub named "(.*?)::"/;
58461.03ms };
59
6046517µs my($pkg, $callpkg, @imports) = @_;
614698µs my($type, $sym, $cache_is_current, $oops);
6246718µs my($exports, $export_cache) = (\@{"${pkg}::EXPORT"},
63 $Exporter::Cache{$pkg} ||= {});
64
6546162µs if (@imports) {
6636356µs if (!%$export_cache) {
67236µs2806µs _rebuild_cache ($pkg, $exports, $export_cache);
# spent 806µs making 2 calls to Exporter::Heavy::_rebuild_cache, avg 403µs/call
6825µs $cache_is_current = 1;
69 }
70
71361.49ms78358µs if (grep m{^[/!:]}, @imports) {
# spent 358µs making 78 calls to Exporter::Heavy::CORE:match, avg 5µs/call
72222µs my $tagsref = \%{"${pkg}::EXPORT_TAGS"};
7321µs my $tagdata;
7421µs my %imports;
7523µs my($remove, $spec, @names, @allexports);
76 # negated first item implies starting with default set:
77236µs25µs unshift @imports, ':DEFAULT' if $imports[0] =~ m/^!/;
# spent 5µs making 2 calls to Exporter::Heavy::CORE:match, avg 2µs/call
78211µs foreach $spec (@imports){
79347µs36µs $remove = $spec =~ s/^!//;
# spent 6µs making 3 calls to Exporter::Heavy::CORE:subst, avg 2µs/call
80
81364µs320µs if ($spec =~ s/^://){
# spent 20µs making 3 calls to Exporter::Heavy::CORE:subst, avg 7µs/call
82380µs if ($spec eq 'DEFAULT'){
83 @names = @$exports;
84 }
85 elsif ($tagdata = $tagsref->{$spec}) {
86 @names = @$tagdata;
87 }
88 else {
89 warn qq["$spec" is not defined in %${pkg}::EXPORT_TAGS];
90 ++$oops;
91 next;
92 }
93 }
94 elsif ($spec =~ m:^/(.*)/$:){
95 my $patn = $1;
96 @allexports = keys %$export_cache unless @allexports; # only do keys once
97 @names = grep(/$patn/, @allexports); # not anchored by default
98 }
99 else {
100 @names = ($spec); # is a normal symbol name
101 }
102
10333µs warn "Import ".($remove ? "del":"add").": @names "
104 if $Exporter::Verbose;
105
106323µs if ($remove) {
107 foreach $sym (@names) { delete $imports{$sym} }
108 }
109 else {
110378µs @imports{@names} = (1) x @names;
111 }
112 }
113282µs @imports = keys %imports;
114 }
115
1163675µs my @carp;
11736177µs foreach $sym (@imports) {
118117478µs if (!$export_cache->{$sym}) {
119154µs211µs if ($sym =~ m/^\d/) {
# spent 6µs making 1 call to Exporter::Heavy::CORE:subst # spent 5µs making 1 call to Exporter::Heavy::CORE:match
120 $pkg->VERSION($sym); # inherit from UNIVERSAL
121 # If the version number was the only thing specified
122 # then we should act as if nothing was specified:
123 if (@imports == 1) {
124 @imports = @$exports;
125 last;
126 }
127 # We need a way to emulate 'use Foo ()' but still
128 # allow an easy version check: "use Foo 1.23, ''";
129 if (@imports == 2 and !$imports[1]) {
130 @imports = ();
131 last;
132 }
133 } elsif ($sym !~ s/^&// || !$export_cache->{$sym}) {
134 # Last chance - see if they've updated EXPORT_OK since we
135 # cached it.
136
137 unless ($cache_is_current) {
138 %$export_cache = ();
139 _rebuild_cache ($pkg, $exports, $export_cache);
140 $cache_is_current = 1;
141 }
142
143 if (!$export_cache->{$sym}) {
144 # accumulate the non-exports
145 push @carp,
146 qq["$sym" is not exported by the $pkg module\n];
147 $oops++;
148 }
149 }
150 }
151 }
1523676µs if ($oops) {
153 require Carp;
154 Carp::croak("@{carp}Can't continue after import errors");
155 }
156 }
157 else {
15810100µs @imports = @$exports;
159 }
160
16146734µs my($fail, $fail_cache) = (\@{"${pkg}::EXPORT_FAIL"},
162 $Exporter::FailCache{$pkg} ||= {});
163
1644667µs if (@$fail) {
165 if (!%$fail_cache) {
166 # Build cache of symbols. Optimise the lookup by adding
167 # barewords twice... both with and without a leading &.
168 # (Technique could be applied to $export_cache at cost of memory)
169 my @expanded = map { /^\w/ ? ($_, '&'.$_) : $_ } @$fail;
170 warn "${pkg}::EXPORT_FAIL cached: @expanded" if $Exporter::Verbose;
171 @{$fail_cache}{@expanded} = (1) x @expanded;
172 }
173 my @failed;
174 foreach $sym (@imports) { push(@failed, $sym) if $fail_cache->{$sym} }
175 if (@failed) {
176 @failed = $pkg->export_fail(@failed);
177 foreach $sym (@failed) {
178 require Carp;
179 Carp::carp(qq["$sym" is not implemented by the $pkg module ],
180 "on this architecture");
181 }
182 if (@failed) {
183 require Carp;
184 Carp::croak("Can't continue after import errors");
185 }
186 }
187 }
188
1894647µs warn "Importing into $callpkg from $pkg: ",
190 join(", ",sort @imports) if $Exporter::Verbose;
191
192462.69ms foreach $sym (@imports) {
193 # shortcut for the common case of no type character
1941704.62ms1701.21ms (*{"${callpkg}::$sym"} = \&{"${pkg}::$sym"}, next)
# spent 1.21ms making 170 calls to Exporter::Heavy::CORE:subst, avg 7µs/call
195 unless $sym =~ s/^(\W)//;
19684521µs $type = $1;
19722.21ms2229µs
# spent 155µs (80+75) within Exporter::Heavy::BEGIN@197 which was called: # once (80µs+75µs) by Exporter::as_heavy at line 197
no warnings 'once';
# spent 155µs making 1 call to Exporter::Heavy::BEGIN@197 # spent 75µs making 1 call to warnings::unimport
198 *{"${callpkg}::$sym"} =
199 $type eq '&' ? \&{"${pkg}::$sym"} :
200 $type eq '$' ? \${"${pkg}::$sym"} :
201 $type eq '@' ? \@{"${pkg}::$sym"} :
202 $type eq '%' ? \%{"${pkg}::$sym"} :
203 $type eq '*' ? *{"${pkg}::$sym"} :
204842.55ms do { require Carp; Carp::croak("Can't export symbol: $type$sym") };
205 }
206}
207
208sub heavy_export_to_level
209
# spent 4.85ms (259µs+4.59) within Exporter::Heavy::heavy_export_to_level which was called 4 times, avg 1.21ms/call: # 4 times (259µs+4.59ms) by JSON::import or XML::LibXML::import at line 81 of Exporter.pm, avg 1.21ms/call
{
210414µs my $pkg = shift;
21146µs my $level = shift;
212410µs (undef) = shift; # XXX redundant arg
213413µs my $callpkg = caller($level);
2144165µs4300µs $pkg->export($callpkg, @_);
# spent 300µs making 4 calls to Exporter::export, avg 75µs/call
215}
216
217# Utility functions
218
219
# spent 94µs within Exporter::Heavy::_push_tags which was called: # once (94µs+0s) by Exporter::Heavy::heavy_export_tags at line 241
sub _push_tags {
22018µs my($pkg, $var, $syms) = @_;
22113µs my @nontag = ();
222114µs my $export_tags = \%{"${pkg}::EXPORT_TAGS"};
223 push(@{"${pkg}::$var"},
224156µs map { $export_tags->{$_} ? @{$export_tags->{$_}}
225 : scalar(push(@nontag,$_),$_) }
226 (@$syms) ? @$syms : keys %$export_tags);
227128µs if (@nontag and $^W) {
228 # This may change to a die one day
229 require Carp;
230 Carp::carp(join(", ", @nontag)." are not tags of $pkg");
231 }
232}
233
234sub heavy_require_version {
235 my($self, $wanted) = @_;
236 my $pkg = ref $self || $self;
237 return ${pkg}->VERSION($wanted);
238}
239
240
# spent 134µs (40+94) within Exporter::Heavy::heavy_export_tags which was called: # once (40µs+94µs) by IPC::Run3::BEGIN@55 at line 85 of Exporter.pm
sub heavy_export_tags {
241139µs194µs _push_tags((caller)[0], "EXPORT", \@_);
# spent 94µs making 1 call to Exporter::Heavy::_push_tags
242}
243
244sub heavy_export_ok_tags {
245 _push_tags((caller)[0], "EXPORT_OK", \@_);
246}
247
248117µs1;
 
# spent 368µs within Exporter::Heavy::CORE:match which was called 81 times, avg 5µs/call: # 78 times (358µs+0s) by Exporter::Heavy::heavy_export at line 71, avg 5µs/call # 2 times (5µs+0s) by Exporter::Heavy::heavy_export at line 77, avg 2µs/call # once (5µs+0s) by Exporter::Heavy::heavy_export at line 119
sub Exporter::Heavy::CORE:match; # opcode
# spent 1.32ms within Exporter::Heavy::CORE:subst which was called 231 times, avg 6µs/call: # 170 times (1.21ms+0s) by Exporter::Heavy::heavy_export at line 194, avg 7µs/call # 30 times (48µs+0s) by Exporter::Heavy::_rebuild_cache at line 30, avg 2µs/call # 24 times (35µs+0s) by Exporter::Heavy::_rebuild_cache at line 34, avg 1µs/call # 3 times (20µs+0s) by Exporter::Heavy::heavy_export at line 81, avg 7µs/call # 3 times (6µs+0s) by Exporter::Heavy::heavy_export at line 79, avg 2µs/call # once (6µs+0s) by Exporter::Heavy::heavy_export at line 119
sub Exporter::Heavy::CORE:subst; # opcode
Report produced by the NYTProf 5.05 Perl profiler, developed by Tim Bunce and Adam Kaplan.