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For bin/benchmark-perlformance
  Run on Fri Apr 17 15:31:48 2015
Reported on Fri Apr 17 15:32:02 2015

Filename/home/ss5/perl5/perlbrew/perls/tapper-perl/lib/5.16.3/Exporter/Heavy.pm
StatementsExecuted 779 statements in 3.80ms
Subroutines
Calls P F Exclusive
Time
Inclusive
Time
Subroutine
7112.34ms2.70msExporter::Heavy::::heavy_exportExporter::Heavy::heavy_export
62541280µs280µsExporter::Heavy::::CORE:substExporter::Heavy::CORE:subst (opcode)
11158µs62µsExporter::Heavy::::_rebuild_cacheExporter::Heavy::_rebuild_cache
11115µs31µsExporter::Heavy::::BEGIN@3Exporter::Heavy::BEGIN@3
224114µs14µsExporter::Heavy::::CORE:matchExporter::Heavy::CORE:match (opcode)
11113µs129µsExporter::Heavy::::heavy_export_to_levelExporter::Heavy::heavy_export_to_level
11112µs12µsExporter::Heavy::::_push_tagsExporter::Heavy::_push_tags
11111µs24µsExporter::Heavy::::BEGIN@197Exporter::Heavy::BEGIN@197
1117µs18µsExporter::Heavy::::BEGIN@4Exporter::Heavy::BEGIN@4
1116µs19µsExporter::Heavy::::heavy_export_ok_tagsExporter::Heavy::heavy_export_ok_tags
0000s0sExporter::Heavy::::__ANON__[:52]Exporter::Heavy::__ANON__[:52]
0000s0sExporter::Heavy::::__ANON__[:58]Exporter::Heavy::__ANON__[:58]
0000s0sExporter::Heavy::::heavy_export_tagsExporter::Heavy::heavy_export_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
3224µs246µs
# spent 31µs (15+16) within Exporter::Heavy::BEGIN@3 which was called: # once (15µs+16µs) by Exporter::as_heavy at line 3
use strict;
# spent 31µs making 1 call to Exporter::Heavy::BEGIN@3 # spent 16µs making 1 call to strict::import
42721µs228µs
# spent 18µs (7+10) within Exporter::Heavy::BEGIN@4 which was called: # once (7µs+10µs) by Exporter::as_heavy at line 4
no strict 'refs';
# spent 18µs making 1 call to Exporter::Heavy::BEGIN@4 # spent 10µs making 1 call to strict::unimport
5
6# On one line so MakeMaker will see it.
721µsrequire Exporter; our $VERSION = $Exporter::VERSION;
8
9=head1 NAME
10
11Exporter::Heavy - Exporter guts
12
13=head1 SYNOPSIS
14
15(internal use only)
16
17=head1 DESCRIPTION
18
19No user-serviceable parts inside.
20
21=cut
22
23#
24# We go to a lot of trouble not to 'require Carp' at file scope,
25# because Carp requires Exporter, and something has to give.
26#
27
28
# spent 62µs (58+4) within Exporter::Heavy::_rebuild_cache which was called: # once (58µs+4µs) by Exporter::Heavy::heavy_export at line 67
sub _rebuild_cache {
2911µs my ($pkg, $exports, $cache) = @_;
3011µs s/^&// foreach @$exports;
3112µs @{$cache}{@$exports} = (1) x @$exports;
3212µs my $ok = \@{"${pkg}::EXPORT_OK"};
3314µs if (@$ok) {
34143µs384µs s/^&// foreach @$ok;
# spent 4µs making 38 calls to Exporter::Heavy::CORE:subst, avg 116ns/call
35111µs @{$cache}{@$ok} = (1) x @$ok;
36 }
37}
38
39
# spent 2.70ms (2.34+362µs) within Exporter::Heavy::heavy_export which was called 7 times, avg 386µs/call: # 7 times (2.34ms+362µs) by Exporter::Heavy::heavy_export_to_level or Exporter::import at line 25 of Exporter.pm, avg 386µs/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 }
52743µs };
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 $_[0] =~ /^Unable to create sub named "(.*?)::"/;
58735µs };
59
60716µs my($pkg, $callpkg, @imports) = @_;
6175µs my($type, $sym, $cache_is_current, $oops);
62719µs my($exports, $export_cache) = (\@{"${pkg}::EXPORT"},
63 $Exporter::Cache{$pkg} ||= {});
64
6575µs if (@imports) {
66511µs if (!%$export_cache) {
6712µs162µs _rebuild_cache ($pkg, $exports, $export_cache);
# spent 62µs making 1 call to Exporter::Heavy::_rebuild_cache
681500ns $cache_is_current = 1;
69 }
70
71548µs188µs if (grep m{^[/!:]}, @imports) {
# spent 8µs making 18 calls to Exporter::Heavy::CORE:match, avg 450ns/call
7226µs my $tagsref = \%{"${pkg}::EXPORT_TAGS"};
732300ns my $tagdata;
742700ns my %imports;
7522µs my($remove, $spec, @names, @allexports);
76 # negated first item implies starting with default set:
77211µs25µs unshift @imports, ':DEFAULT' if $imports[0] =~ m/^!/;
# spent 5µs making 2 calls to Exporter::Heavy::CORE:match, avg 2µs/call
7823µs foreach $spec (@imports){
7938µs3900ns $remove = $spec =~ s/^!//;
# spent 900ns making 3 calls to Exporter::Heavy::CORE:subst, avg 300ns/call
80
81312µs43µs if ($spec =~ s/^://){
# spent 2µs making 3 calls to Exporter::Heavy::CORE:subst, avg 833ns/call # spent 600ns making 1 call to Exporter::Heavy::CORE:match
8226µs 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(/$patn/, @allexports); # not anchored by default
98 }
99 else {
10011µs @names = ($spec); # is a normal symbol name
101 }
102
1033900ns warn "Import ".($remove ? "del":"add").": @names "
104 if $Exporter::Verbose;
105
10633µs if ($remove) {
107 foreach $sym (@names) { delete $imports{$sym} }
108 }
109 else {
110315µs @imports{@names} = (1) x @names;
111 }
112 }
11326µs @imports = keys %imports;
114 }
115
11651µs my @carp;
11754µs foreach $sym (@imports) {
1182411µs if (!$export_cache->{$sym}) {
11914µs1700ns if ($sym =~ m/^\d/) {
# spent 700ns making 1 call to Exporter::Heavy::CORE:match
120118µs110µs $pkg->VERSION($sym); # inherit from UNIVERSAL
# spent 10µs making 1 call to UNIVERSAL::VERSION
121 # If the version number was the only thing specified
122 # then we should act as if nothing was specified:
1231700ns if (@imports == 1) {
124 @imports = @$exports;
125 last;
126 }
127 # We need a way to emulate 'use Foo ()' but still
128 # allow an easy version check: "use Foo 1.23, ''";
1291400ns if (@imports == 2 and !$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 $oops++;
148 }
149 }
150 }
151 }
15253µs if ($oops) {
153 require Carp;
154 Carp::croak("@{carp}Can't continue after import errors");
155 }
156 }
157 else {
158227µs @imports = @$exports;
159 }
160
161733µs my($fail, $fail_cache) = (\@{"${pkg}::EXPORT_FAIL"},
162 $Exporter::FailCache{$pkg} ||= {});
163
16474µs 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
18972µs warn "Importing into $callpkg from $pkg: ",
190 join(", ",sort @imports) if $Exporter::Verbose;
191
1927173µs foreach $sym (@imports) {
193 # shortcut for the common case of no type character
1945812.06ms581272µs (*{"${callpkg}::$sym"} = \&{"${pkg}::$sym"}, next)
# spent 272µs making 581 calls to Exporter::Heavy::CORE:subst, avg 469ns/call
195 unless $sym =~ s/^(\W)//;
196614µs $type = $1;
1972313µs236µs
# spent 24µs (11+13) within Exporter::Heavy::BEGIN@197 which was called: # once (11µs+13µs) by Exporter::as_heavy at line 197
no warnings 'once';
# spent 24µs making 1 call to Exporter::Heavy::BEGIN@197 # spent 13µs making 1 call to warnings::unimport
198 *{"${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"} :
204635µs do { require Carp; Carp::croak("Can't export symbol: $type$sym") };
205 }
206}
207
208sub heavy_export_to_level
209
# spent 129µs (13+117) within Exporter::Heavy::heavy_export_to_level which was called: # once (13µs+117µs) by Time::HiRes::import at line 81 of Exporter.pm
{
2101600ns my $pkg = shift;
2111400ns my $level = shift;
2121500ns (undef) = shift; # XXX redundant arg
2131600ns my $callpkg = caller($level);
21417µs110µs $pkg->export($callpkg, @_);
# spent 10µs making 1 call to Exporter::export
215}
216
217# Utility functions
218
219
# spent 12µs within Exporter::Heavy::_push_tags which was called: # once (12µs+0s) by Exporter::Heavy::heavy_export_ok_tags at line 245
sub _push_tags {
22011µs my($pkg, $var, $syms) = @_;
2211600ns my @nontag = ();
22212µs my $export_tags = \%{"${pkg}::EXPORT_TAGS"};
223 push(@{"${pkg}::$var"},
22417µs map { $export_tags->{$_} ? @{$export_tags->{$_}}
225 : scalar(push(@nontag,$_),$_) }
226 (@$syms) ? @$syms : keys %$export_tags);
22714µs 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
240sub heavy_export_tags {
241 _push_tags((caller)[0], "EXPORT", \@_);
242}
243
244
# spent 19µs (6+12) within Exporter::Heavy::heavy_export_ok_tags which was called: # once (6µs+12µs) by Data::DPath::Path::BEGIN@17 at line 89 of Exporter.pm
sub heavy_export_ok_tags {
24516µs112µs _push_tags((caller)[0], "EXPORT_OK", \@_);
# spent 12µs making 1 call to Exporter::Heavy::_push_tags
246}
247
24812µs1;
 
# spent 14µs within Exporter::Heavy::CORE:match which was called 22 times, avg 636ns/call: # 18 times (8µs+0s) by Exporter::Heavy::heavy_export at line 71, avg 450ns/call # 2 times (5µs+0s) by Exporter::Heavy::heavy_export at line 77, avg 2µs/call # once (700ns+0s) by Exporter::Heavy::heavy_export at line 119 # once (600ns+0s) by Exporter::Heavy::heavy_export at line 81
sub Exporter::Heavy::CORE:match; # opcode
# spent 280µs within Exporter::Heavy::CORE:subst which was called 625 times, avg 448ns/call: # 581 times (272µs+0s) by Exporter::Heavy::heavy_export at line 194, avg 469ns/call # 38 times (4µs+0s) by Exporter::Heavy::_rebuild_cache at line 34, avg 116ns/call # 3 times (2µs+0s) by Exporter::Heavy::heavy_export at line 81, avg 833ns/call # 3 times (900ns+0s) by Exporter::Heavy::heavy_export at line 79, avg 300ns/call
sub Exporter::Heavy::CORE:subst; # opcode