Profile of /usr/local/lib/perl5/5.10.1/Exporter/Heavy.pm

← Index
NYTProf Performance Profile «block view•line view•sub view»
For 05.Domain_and_Item.t
Run on Tue May 4 17:21:41 2010
Reported on Tue May 4 17:22:44 2010

File | /usr/local/lib/perl5/5.10.1/Exporter/Heavy.pm
Statements Executed | 1601
Statement Execution Time | 7.78ms

Subroutines — ordered by exclusive time
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
19 | 1 | 1 | 6.03ms | 6.66ms | Exporter::Heavy::::heavy_exportExporter::Heavy::heavy_export
1162 | 4 | 2 | 537µs | 537µs | Exporter::Heavy::::CORE:substExporter::Heavy::CORE:subst (opcode)
1 | 1 | 1 | 78µs | 82µs | Exporter::Heavy::::_rebuild_cacheExporter::Heavy::_rebuild_cache
5 | 1 | 1 | 72µs | 608µs | Exporter::Heavy::::heavy_export_to_levelExporter::Heavy::heavy_export_to_level
4 | 2 | 1 | 59µs | 59µs | Exporter::Heavy::::_push_tagsExporter::Heavy::_push_tags
3 | 1 | 1 | 18µs | 58µs | Exporter::Heavy::::heavy_export_ok_tagsExporter::Heavy::heavy_export_ok_tags
1 | 1 | 1 | 17µs | 21µs | Exporter::Heavy::::BEGIN@3Exporter::Heavy::BEGIN@3
19 | 3 | 2 | 15µs | 15µs | Exporter::Heavy::::CORE:matchExporter::Heavy::CORE:match (opcode)
1 | 1 | 1 | 9µs | 18µs | Exporter::Heavy::::BEGIN@200Exporter::Heavy::BEGIN@200
1 | 1 | 1 | 7µs | 26µs | Exporter::Heavy::::heavy_export_tagsExporter::Heavy::heavy_export_tags
1 | 1 | 1 | 5µs | 16µs | Exporter::Heavy::::BEGIN@4Exporter::Heavy::BEGIN@4
0 | 0 | 0 | 0s | 0s | Exporter::Heavy::::__ANON__[:55]Exporter::Heavy::__ANON__[:55]
0 | 0 | 0 | 0s | 0s | Exporter::Heavy::::__ANON__[:61]Exporter::Heavy::__ANON__[:61]
0 | 0 | 0 | 0s | 0s | Exporter::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
--- | --- | --- | --- | --- | ---
1 |  |  |  |  | package Exporter::Heavy;
2 |  |  |  |  |
3 | 3 | 27µs | 2 | 26µs | # spent 21µs (17+4) within Exporter::Heavy::BEGIN@3 which was called # once (17µs+4µs) by Exporter::as_heavy at line 3 use strict; # spent 21µs making 1 call to Exporter::Heavy::BEGIN@3 # spent 4µs making 1 call to strict::import
4 | 3 | 796µs | 2 | 27µs | # spent 16µs (5+11) within Exporter::Heavy::BEGIN@4 which was called # once (5µs+11µs) by Exporter::as_heavy at line 4 no strict 'refs'; # spent 16µs making 1 call to Exporter::Heavy::BEGIN@4 # spent 11µs making 1 call to strict::unimport
5 |  |  |  |  |
6 |  |  |  |  | # On one line so MakeMaker will see it.
7 | 2 | 1µs |  |  | require Exporter; our $VERSION = $Exporter::VERSION;
8 |  |  |  |  |
9 |  |  |  |  | # Carp 1.05+ does this now for us, but we may be running with an old Carp
10 | 1 | 600ns |  |  | $Carp::Internal{'Exporter::Heavy'}++;
11 |  |  |  |  |
12 |  |  |  |  | =head1 NAME
13 |  |  |  |  |
14 |  |  |  |  | Exporter::Heavy - Exporter guts
15 |  |  |  |  |
16 |  |  |  |  | =head1 SYNOPSIS
17 |  |  |  |  |
18 |  |  |  |  | (internal use only)
19 |  |  |  |  |
20 |  |  |  |  | =head1 DESCRIPTION
21 |  |  |  |  |
22 |  |  |  |  | No user-serviceable parts inside.
23 |  |  |  |  |
24 |  |  |  |  | =cut
25 |  |  |  |  |
26 |  |  |  |  | #
27 |  |  |  |  | # We go to a lot of trouble not to 'require Carp' at file scope,
28 |  |  |  |  | # because Carp requires Exporter, and something has to give.
29 |  |  |  |  | #
30 |  |  |  |  |
31 |  |  |  |  | # spent 82µs (78+4) within Exporter::Heavy::_rebuild_cache which was called # once (78µs+4µs) by Exporter::Heavy::heavy_export at line 70 sub _rebuild_cache {
32 | 6 | 11µs |  |  | my ($pkg, $exports, $cache) = @_;
33 |  |  |  |  | s/^&// foreach @$exports;
34 |  |  |  |  | @{$cache}{@$exports} = (1) x @$exports;
35 |  |  |  |  | my $ok = \@{"${pkg}::EXPORT_OK"};
36 | 3 | 25µs |  |  | if (@$ok) {
37 |  |  |  |  | s/^&// foreach @$ok; # spent 4µs making 38 calls to Exporter::Heavy::CORE:subst, avg 116ns/call
38 | 1 | 42µs |  |  | @{$cache}{@$ok} = (1) x @$ok;
39 |  |  |  |  | }
40 |  |  |  |  | }
41 |  |  |  |  |
42 |  |  |  |  | # spent 6.66ms (6.03+630µs) within Exporter::Heavy::heavy_export which was called 19 times, avg 351µs/call: # 19 times (6.03ms+630µs) by Exporter::Heavy::heavy_export_to_level or Exporter::import or FileHandle::import or IO::Socket::import at line 28 of Exporter.pm, avg 351µs/call sub heavy_export {
43 |  |  |  |  |
44 |  |  |  |  | # First make import warnings look like they're coming from the "use".
45 |  |  |  |  | local $SIG{__WARN__} = sub {
46 |  |  |  |  | my $text = shift;
47 |  |  |  |  | if ($text =~ s/ at \S*Exporter\S*.pm line \d+.*\n//) {
48 |  |  |  |  | require Carp;
49 |  |  |  |  | local $Carp::CarpLevel = 1; # ignore package calling us too.
50 |  |  |  |  | Carp::carp($text);
51 |  |  |  |  | }
52 |  |  |  |  | else {
53 |  |  |  |  | warn $text;
54 |  |  |  |  | }
55 | 190 | 782µs |  |  | };
56 |  |  |  |  | local $SIG{__DIE__} = sub {
57 |  |  |  |  | require Carp;
58 |  |  |  |  | local $Carp::CarpLevel = 1; # ignore package calling us too.
59 |  |  |  |  | Carp::croak("$_[0]Illegal null symbol in \@${1}::EXPORT")
60 |  |  |  |  | if $_[0] =~ /^Unable to create sub named "(.*?)::"/;
61 |  |  |  |  | };
62 |  |  |  |  |
63 |  |  |  |  | my($pkg, $callpkg, @imports) = @_;
64 |  |  |  |  | my($type, $sym, $cache_is_current, $oops);
65 |  |  |  |  | my($exports, $export_cache) = (\@{"${pkg}::EXPORT"},
66 |  |  |  |  | $Exporter::Cache{$pkg} ||= {});
67 |  |  |  |  |
68 | 51 | 406µs |  |  | if (@imports) {
69 | 2 | 3µs |  |  | if (!%$export_cache) {
70 |  |  |  |  | _rebuild_cache ($pkg, $exports, $export_cache); # spent 82µs making 1 call to Exporter::Heavy::_rebuild_cache
71 |  |  |  |  | $cache_is_current = 1;
72 |  |  |  |  | }
73 |  |  |  |  |
74 | 49 | 120µs | 10 | 9µs | if (grep m{^[/!:]}, @imports) { # spent 9µs making 10 calls to Exporter::Heavy::CORE:match, avg 890ns/call
75 |  |  |  |  | my $tagsref = \%{"${pkg}::EXPORT_TAGS"};
76 |  |  |  |  | my $tagdata;
77 |  |  |  |  | my %imports;
78 |  |  |  |  | my($remove, $spec, @names, @allexports);
79 |  |  |  |  | # negated first item implies starting with default set:
80 |  |  |  |  | unshift @imports, ':DEFAULT' if $imports[0] =~ m/^!/; # spent 5µs making 7 calls to Exporter::Heavy::CORE:match, avg 700ns/call
81 |  |  |  |  | foreach $spec (@imports){
82 | 36 | 94µs | 9 | 4µs | $remove = $spec =~ s/^!//; # spent 4µs making 9 calls to Exporter::Heavy::CORE:subst, avg 500ns/call
83 |  |  |  |  |
84 | 9 | 54µs | 11 | 11µs | if ($spec =~ s/^://){ # spent 10µs making 9 calls to Exporter::Heavy::CORE:subst, avg 1µs/call # spent 1µs making 2 calls to Exporter::Heavy::CORE:match, avg 650ns/call
85 |  |  |  |  | if ($spec eq 'DEFAULT'){
86 |  |  |  |  | @names = @$exports;
87 |  |  |  |  | }
88 |  |  |  |  | elsif ($tagdata = $tagsref->{$spec}) {
89 |  |  |  |  | @names = @$tagdata;
90 |  |  |  |  | }
91 |  |  |  |  | else {
92 |  |  |  |  | warn qq["$spec" is not defined in %${pkg}::EXPORT_TAGS];
93 |  |  |  |  | ++$oops;
94 |  |  |  |  | next;
95 |  |  |  |  | }
96 |  |  |  |  | }
97 |  |  |  |  | elsif ($spec =~ m:^/(.*)/$:){
98 |  |  |  |  | my $patn = $1;
99 |  |  |  |  | @allexports = keys %$export_cache unless @allexports; # only do keys once
100 |  |  |  |  | @names = grep(/$patn/, @allexports); # not anchored by default
101 |  |  |  |  | }
102 |  |  |  |  | else {
103 |  |  |  |  | @names = ($spec); # is a normal symbol name
104 |  |  |  |  | }
105 |  |  |  |  |
106 |  |  |  |  | warn "Import ".($remove ? "del":"add").": @names "
107 |  |  |  |  | if $Exporter::Verbose;
108 |  |  |  |  |
109 | 9 | 38µs |  |  | if ($remove) {
110 |  |  |  |  | foreach $sym (@names) { delete $imports{$sym} }
111 |  |  |  |  | }
112 |  |  |  |  | else {
113 |  |  |  |  | @imports{@names} = (1) x @names;
114 |  |  |  |  | }
115 |  |  |  |  | }
116 |  |  |  |  | @imports = keys %imports;
117 |  |  |  |  | }
118 |  |  |  |  |
119 |  |  |  |  | my @carp;
120 |  |  |  |  | foreach $sym (@imports) {
121 | 61 | 21µs |  |  | if (!$export_cache->{$sym}) {
122 |  |  |  |  | if ($sym =~ m/^\d/) {
123 |  |  |  |  | $pkg->VERSION($sym); # inherit from UNIVERSAL
124 |  |  |  |  | # If the version number was the only thing specified
125 |  |  |  |  | # then we should act as if nothing was specified:
126 |  |  |  |  | if (@imports == 1) {
127 |  |  |  |  | @imports = @$exports;
128 |  |  |  |  | last;
129 |  |  |  |  | }
130 |  |  |  |  | # We need a way to emulate 'use Foo ()' but still
131 |  |  |  |  | # allow an easy version check: "use Foo 1.23, ''";
132 |  |  |  |  | if (@imports == 2 and !$imports[1]) {
133 |  |  |  |  | @imports = ();
134 |  |  |  |  | last;
135 |  |  |  |  | }
136 |  |  |  |  | } elsif ($sym !~ s/^&// || !$export_cache->{$sym}) {
137 |  |  |  |  | # Last chance - see if they've updated EXPORT_OK since we
138 |  |  |  |  | # cached it.
139 |  |  |  |  |
140 |  |  |  |  | unless ($cache_is_current) {
141 |  |  |  |  | %$export_cache = ();
142 |  |  |  |  | _rebuild_cache ($pkg, $exports, $export_cache);
143 |  |  |  |  | $cache_is_current = 1;
144 |  |  |  |  | }
145 |  |  |  |  |
146 |  |  |  |  | if (!$export_cache->{$sym}) {
147 |  |  |  |  | # accumulate the non-exports
148 |  |  |  |  | push @carp,
149 |  |  |  |  | qq["$sym" is not exported by the $pkg module\n];
150 |  |  |  |  | $oops++;
151 |  |  |  |  | }
152 |  |  |  |  | }
153 |  |  |  |  | }
154 |  |  |  |  | }
155 |  |  |  |  | if ($oops) {
156 |  |  |  |  | require Carp;
157 |  |  |  |  | Carp::croak("@{carp}Can't continue after import errors");
158 |  |  |  |  | }
159 |  |  |  |  | }
160 |  |  |  |  | else {
161 |  |  |  |  | @imports = @$exports;
162 |  |  |  |  | }
163 |  |  |  |  |
164 |  |  |  |  | my($fail, $fail_cache) = (\@{"${pkg}::EXPORT_FAIL"},
165 |  |  |  |  | $Exporter::FailCache{$pkg} ||= {});
166 |  |  |  |  |
167 |  |  |  |  | if (@$fail) {
168 |  |  |  |  | if (!%$fail_cache) {
169 |  |  |  |  | # Build cache of symbols. Optimise the lookup by adding
170 |  |  |  |  | # barewords twice... both with and without a leading &.
171 |  |  |  |  | # (Technique could be applied to $export_cache at cost of memory)
172 |  |  |  |  | my @expanded = map { /^\w/ ? ($_, '&'.$_) : $_ } @$fail;
173 |  |  |  |  | warn "${pkg}::EXPORT_FAIL cached: @expanded" if $Exporter::Verbose;
174 |  |  |  |  | @{$fail_cache}{@expanded} = (1) x @expanded;
175 |  |  |  |  | }
176 |  |  |  |  | my @failed;
177 |  |  |  |  | foreach $sym (@imports) { push(@failed, $sym) if $fail_cache->{$sym} }
178 |  |  |  |  | if (@failed) {
179 |  |  |  |  | @failed = $pkg->export_fail(@failed);
180 |  |  |  |  | foreach $sym (@failed) {
181 |  |  |  |  | require Carp;
182 |  |  |  |  | Carp::carp(qq["$sym" is not implemented by the $pkg module ],
183 |  |  |  |  | "on this architecture");
184 |  |  |  |  | }
185 |  |  |  |  | if (@failed) {
186 |  |  |  |  | require Carp;
187 |  |  |  |  | Carp::croak("Can't continue after import errors");
188 |  |  |  |  | }
189 |  |  |  |  | }
190 |  |  |  |  | }
191 |  |  |  |  |
192 |  |  |  |  | warn "Importing into $callpkg from $pkg: ",
193 |  |  |  |  | join(", ",sort @imports) if $Exporter::Verbose;
194 |  |  |  |  |
195 |  |  |  |  | foreach $sym (@imports) {
196 |  |  |  |  | # shortcut for the common case of no type character
197 | 1122 | 4.84ms | 1106 | 519µs | (*{"${callpkg}::$sym"} = \&{"${pkg}::$sym"}, next) # spent 519µs making 1106 calls to Exporter::Heavy::CORE:subst, avg 469ns/call
198 |  |  |  |  | unless $sym =~ s/^(\W)//;
199 |  |  |  |  | $type = $1;
200 | 3 | 378µs | 2 | 28µs | # spent 18µs (9+9) within Exporter::Heavy::BEGIN@200 which was called # once (9µs+9µs) by Exporter::as_heavy at line 200 no warnings 'once'; # spent 18µs making 1 call to Exporter::Heavy::BEGIN@200 # spent 9µs making 1 call to warnings::unimport
201 |  |  |  |  | *{"${callpkg}::$sym"} =
202 |  |  |  |  | $type eq '&' ? \&{"${pkg}::$sym"} :
203 |  |  |  |  | $type eq '$' ? \${"${pkg}::$sym"} :
204 |  |  |  |  | $type eq '@' ? \@{"${pkg}::$sym"} :
205 |  |  |  |  | $type eq '%' ? \%{"${pkg}::$sym"} :
206 |  |  |  |  | $type eq '*' ? *{"${pkg}::$sym"} :
207 |  |  |  |  | do { require Carp; Carp::croak("Can't export symbol: $type$sym") };
208 |  |  |  |  | }
209 |  |  |  |  | }
210 |  |  |  |  |
211 |  |  |  |  | sub heavy_export_to_level
212 |  |  |  |  | # spent 608µs (72+537) within Exporter::Heavy::heavy_export_to_level which was called 5 times, avg 122µs/call: # 5 times (72µs+537µs) by JSON::import or Test::Builder::Module::import or Time::HiRes::import at line 82 of Exporter.pm, avg 122µs/call {
213 | 25 | 51µs |  |  | my $pkg = shift;
214 |  |  |  |  | my $level = shift;
215 |  |  |  |  | (undef) = shift; # XXX redundant arg
216 |  |  |  |  | my $callpkg = caller($level);
217 |  |  |  |  | $pkg->export($callpkg, @_); # spent 58µs making 5 calls to Exporter::export, avg 12µs/call
218 |  |  |  |  | }
219 |  |  |  |  |
220 |  |  |  |  | # Utility functions
221 |  |  |  |  |
222 |  |  |  |  | # spent 59µs within Exporter::Heavy::_push_tags which was called 4 times, avg 15µs/call: # 3 times (40µs+0s) by Exporter::Heavy::heavy_export_ok_tags at line 248, avg 13µs/call # once (19µs+0s) by Exporter::Heavy::heavy_export_tags at line 244 sub _push_tags {
223 | 20 | 62µs |  |  | my($pkg, $var, $syms) = @_;
224 |  |  |  |  | my @nontag = ();
225 |  |  |  |  | my $export_tags = \%{"${pkg}::EXPORT_TAGS"};
226 |  |  |  |  | push(@{"${pkg}::$var"},
227 |  |  |  |  | map { $export_tags->{$_} ? @{$export_tags->{$_}}
228 |  |  |  |  | : scalar(push(@nontag,$_),$_) }
229 |  |  |  |  | (@$syms) ? @$syms : keys %$export_tags);
230 |  |  |  |  | if (@nontag and $^W) {
231 |  |  |  |  | # This may change to a die one day
232 |  |  |  |  | require Carp;
233 |  |  |  |  | Carp::carp(join(", ", @nontag)." are not tags of $pkg");
234 |  |  |  |  | }
235 |  |  |  |  | }
236 |  |  |  |  |
237 |  |  |  |  | sub heavy_require_version {
238 |  |  |  |  | my($self, $wanted) = @_;
239 |  |  |  |  | my $pkg = ref $self || $self;
240 |  |  |  |  | return ${pkg}->VERSION($wanted);
241 |  |  |  |  | }
242 |  |  |  |  |
243 |  |  |  |  | # spent 26µs (7+19) within Exporter::Heavy::heavy_export_tags which was called # once (7µs+19µs) by SimpleDB::Class::Item::BEGIN@18 at line 86 of Exporter.pm sub heavy_export_tags {
244 | 1 | 7µs | 1 | 19µs | _push_tags((caller)[0], "EXPORT", \@_); # spent 19µs making 1 call to Exporter::Heavy::_push_tags
245 |  |  |  |  | }
246 |  |  |  |  |
247 |  |  |  |  | # spent 58µs (18+40) within Exporter::Heavy::heavy_export_ok_tags which was called 3 times, avg 19µs/call: # 3 times (18µs+40µs) by IO::Uncompress::Gunzip::BEGIN@12 or Net::HTTP::Methods::gunzip_ok or SimpleDB::Class::Item::BEGIN@18 at line 90 of Exporter.pm, avg 19µs/call sub heavy_export_ok_tags {
248 | 3 | 20µs | 3 | 40µs | _push_tags((caller)[0], "EXPORT_OK", \@_); # spent 40µs making 3 calls to Exporter::Heavy::_push_tags, avg 13µs/call
249 |  |  |  |  | }
250 |  |  |  |  |
251 | 1 | 4µs |  |  | 1;
|  |  |  |  | # spent 15µs within Exporter::Heavy::CORE:match which was called 19 times, avg 795ns/call: # 10 times (9µs+0s) by Exporter::Heavy::heavy_export at line 74 of Exporter/Heavy.pm, avg 890ns/call # 7 times (5µs+0s) by Exporter::Heavy::heavy_export at line 80 of Exporter/Heavy.pm, avg 700ns/call # 2 times (1µs+0s) by Exporter::Heavy::heavy_export at line 84 of Exporter/Heavy.pm, avg 650ns/call sub Exporter::Heavy::CORE:match; # xsub
|  |  |  |  | # spent 537µs within Exporter::Heavy::CORE:subst which was called 1162 times, avg 462ns/call: # 1106 times (519µs+0s) by Exporter::Heavy::heavy_export at line 197 of Exporter/Heavy.pm, avg 469ns/call # 38 times (4µs+0s) by Exporter::Heavy::_rebuild_cache at line 37 of Exporter/Heavy.pm, avg 116ns/call # 9 times (10µs+0s) by Exporter::Heavy::heavy_export at line 84 of Exporter/Heavy.pm, avg 1µs/call # 9 times (4µs+0s) by Exporter::Heavy::heavy_export at line 82 of Exporter/Heavy.pm, avg 500ns/call sub Exporter::Heavy::CORE:subst; # xsub