Filename | /usr/lib64/perl5/5.16.0/Exporter/Heavy.pm |
Statements | Executed 1189 statements in 27.8ms |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
46 | 1 | 1 | 16.2ms | 18.7ms | heavy_export | Exporter::Heavy::
231 | 6 | 1 | 1.32ms | 1.32ms | CORE:subst (opcode) | Exporter::Heavy::
2 | 1 | 1 | 722µs | 806µs | _rebuild_cache | Exporter::Heavy::
81 | 3 | 1 | 368µs | 368µs | CORE:match (opcode) | Exporter::Heavy::
4 | 1 | 1 | 259µs | 4.85ms | heavy_export_to_level | Exporter::Heavy::
1 | 1 | 1 | 94µs | 94µs | _push_tags | Exporter::Heavy::
1 | 1 | 1 | 81µs | 175µs | BEGIN@3 | Exporter::Heavy::
1 | 1 | 1 | 80µs | 155µs | BEGIN@197 | Exporter::Heavy::
1 | 1 | 1 | 46µs | 105µs | BEGIN@4 | Exporter::Heavy::
1 | 1 | 1 | 40µs | 134µs | heavy_export_tags | Exporter::Heavy::
0 | 0 | 0 | 0s | 0s | __ANON__[:52] | Exporter::Heavy::
0 | 0 | 0 | 0s | 0s | __ANON__[:58] | Exporter::Heavy::
0 | 0 | 0 | 0s | 0s | heavy_export_ok_tags | Exporter::Heavy::
0 | 0 | 0 | 0s | 0s | heavy_require_version | Exporter::Heavy::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
---|---|---|---|---|---|
1 | package Exporter::Heavy; | ||||
2 | |||||
3 | 2 | 158µs | 2 | 269µs | # spent 175µs (81+94) within Exporter::Heavy::BEGIN@3 which was called:
# once (81µs+94µs) by Exporter::as_heavy at line 3 # spent 175µs making 1 call to Exporter::Heavy::BEGIN@3
# spent 94µs making 1 call to strict::import |
4 | 2 | 5.94ms | 2 | 164µs | # spent 105µs (46+59) within Exporter::Heavy::BEGIN@4 which was called:
# once (46µs+59µs) by Exporter::as_heavy at line 4 # 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. | ||||
7 | 2 | 8µs | require Exporter; our $VERSION = $Exporter::VERSION; | ||
8 | |||||
9 | =head1 NAME | ||||
10 | |||||
11 | Exporter::Heavy - Exporter guts | ||||
12 | |||||
13 | =head1 SYNOPSIS | ||||
14 | |||||
15 | (internal use only) | ||||
16 | |||||
17 | =head1 DESCRIPTION | ||||
18 | |||||
19 | No user-serviceable parts inside. | ||||
20 | |||||
21 | =cut | ||||
22 | |||||
23 | # | ||||
24 | # We go to a lot of trouble not to 'require Carp' at file scope, | ||||
25 | # because Carp requires Exporter, and something has to give. | ||||
26 | # | ||||
27 | |||||
28 | # spent 806µs (722+83) within Exporter::Heavy::_rebuild_cache which was called 2 times, avg 403µs/call:
# 2 times (722µs+83µs) by Exporter::Heavy::heavy_export at line 67, avg 403µs/call | ||||
29 | 2 | 9µs | my ($pkg, $exports, $cache) = @_; | ||
30 | 2 | 366µs | 30 | 48µs | s/^&// foreach @$exports; # spent 48µs making 30 calls to Exporter::Heavy::CORE:subst, avg 2µs/call |
31 | 2 | 61µs | @{$cache}{@$exports} = (1) x @$exports; | ||
32 | 2 | 32µs | my $ok = \@{"${pkg}::EXPORT_OK"}; | ||
33 | 2 | 49µs | if (@$ok) { | ||
34 | 1 | 275µs | 24 | 35µs | s/^&// foreach @$ok; # spent 35µs making 24 calls to Exporter::Heavy::CORE:subst, avg 1µs/call |
35 | 1 | 21µs | @{$cache}{@$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 | ||||
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 | } | ||||
52 | 46 | 1.26ms | }; | ||
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 $_[0] =~ /^Unable to create sub named "(.*?)::"/; | ||||
58 | 46 | 1.03ms | }; | ||
59 | |||||
60 | 46 | 517µs | my($pkg, $callpkg, @imports) = @_; | ||
61 | 46 | 98µs | my($type, $sym, $cache_is_current, $oops); | ||
62 | 46 | 718µs | my($exports, $export_cache) = (\@{"${pkg}::EXPORT"}, | ||
63 | $Exporter::Cache{$pkg} ||= {}); | ||||
64 | |||||
65 | 46 | 162µs | if (@imports) { | ||
66 | 36 | 356µs | if (!%$export_cache) { | ||
67 | 2 | 36µs | 2 | 806µs | _rebuild_cache ($pkg, $exports, $export_cache); # spent 806µs making 2 calls to Exporter::Heavy::_rebuild_cache, avg 403µs/call |
68 | 2 | 5µs | $cache_is_current = 1; | ||
69 | } | ||||
70 | |||||
71 | 36 | 1.49ms | 78 | 358µs | if (grep m{^[/!:]}, @imports) { # spent 358µs making 78 calls to Exporter::Heavy::CORE:match, avg 5µs/call |
72 | 2 | 22µs | my $tagsref = \%{"${pkg}::EXPORT_TAGS"}; | ||
73 | 2 | 1µs | my $tagdata; | ||
74 | 2 | 1µs | my %imports; | ||
75 | 2 | 3µs | my($remove, $spec, @names, @allexports); | ||
76 | # negated first item implies starting with default set: | ||||
77 | 2 | 36µs | 2 | 5µs | unshift @imports, ':DEFAULT' if $imports[0] =~ m/^!/; # spent 5µs making 2 calls to Exporter::Heavy::CORE:match, avg 2µs/call |
78 | 2 | 11µs | foreach $spec (@imports){ | ||
79 | 3 | 47µs | 3 | 6µs | $remove = $spec =~ s/^!//; # spent 6µs making 3 calls to Exporter::Heavy::CORE:subst, avg 2µs/call |
80 | |||||
81 | 3 | 64µs | 3 | 20µs | if ($spec =~ s/^://){ # spent 20µs making 3 calls to Exporter::Heavy::CORE:subst, avg 7µs/call |
82 | 3 | 80µs | 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 | |||||
103 | 3 | 3µs | warn "Import ".($remove ? "del":"add").": @names " | ||
104 | if $Exporter::Verbose; | ||||
105 | |||||
106 | 3 | 23µs | if ($remove) { | ||
107 | foreach $sym (@names) { delete $imports{$sym} } | ||||
108 | } | ||||
109 | else { | ||||
110 | 3 | 78µs | @imports{@names} = (1) x @names; | ||
111 | } | ||||
112 | } | ||||
113 | 2 | 82µs | @imports = keys %imports; | ||
114 | } | ||||
115 | |||||
116 | 36 | 75µs | my @carp; | ||
117 | 36 | 177µs | foreach $sym (@imports) { | ||
118 | 117 | 478µs | if (!$export_cache->{$sym}) { | ||
119 | 1 | 54µs | 2 | 11µs | if ($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 | $oops++; | ||||
148 | } | ||||
149 | } | ||||
150 | } | ||||
151 | } | ||||
152 | 36 | 76µs | if ($oops) { | ||
153 | require Carp; | ||||
154 | Carp::croak("@{carp}Can't continue after import errors"); | ||||
155 | } | ||||
156 | } | ||||
157 | else { | ||||
158 | 10 | 100µs | @imports = @$exports; | ||
159 | } | ||||
160 | |||||
161 | 46 | 734µs | my($fail, $fail_cache) = (\@{"${pkg}::EXPORT_FAIL"}, | ||
162 | $Exporter::FailCache{$pkg} ||= {}); | ||||
163 | |||||
164 | 46 | 67µs | 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 | |||||
189 | 46 | 47µs | warn "Importing into $callpkg from $pkg: ", | ||
190 | join(", ",sort @imports) if $Exporter::Verbose; | ||||
191 | |||||
192 | 46 | 2.69ms | foreach $sym (@imports) { | ||
193 | # shortcut for the common case of no type character | ||||
194 | 170 | 4.62ms | 170 | 1.21ms | (*{"${callpkg}::$sym"} = \&{"${pkg}::$sym"}, next) # spent 1.21ms making 170 calls to Exporter::Heavy::CORE:subst, avg 7µs/call |
195 | unless $sym =~ s/^(\W)//; | ||||
196 | 84 | 521µs | $type = $1; | ||
197 | 2 | 2.21ms | 2 | 229µs | # spent 155µs (80+75) within Exporter::Heavy::BEGIN@197 which was called:
# once (80µs+75µs) by Exporter::as_heavy at line 197 # spent 155µs making 1 call to Exporter::Heavy::BEGIN@197
# spent 75µs making 1 call to warnings::unimport |
198 | *{"${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"} : | ||||
204 | 84 | 2.55ms | do { require Carp; Carp::croak("Can't export symbol: $type$sym") }; | ||
205 | } | ||||
206 | } | ||||
207 | |||||
208 | sub 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 | ||||
210 | 4 | 14µs | my $pkg = shift; | ||
211 | 4 | 6µs | my $level = shift; | ||
212 | 4 | 10µs | (undef) = shift; # XXX redundant arg | ||
213 | 4 | 13µs | my $callpkg = caller($level); | ||
214 | 4 | 165µs | 4 | 300µs | $pkg->export($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 | ||||
220 | 1 | 8µs | my($pkg, $var, $syms) = @_; | ||
221 | 1 | 3µs | my @nontag = (); | ||
222 | 1 | 14µs | my $export_tags = \%{"${pkg}::EXPORT_TAGS"}; | ||
223 | push(@{"${pkg}::$var"}, | ||||
224 | 1 | 56µs | map { $export_tags->{$_} ? @{$export_tags->{$_}} | ||
225 | : scalar(push(@nontag,$_),$_) } | ||||
226 | (@$syms) ? @$syms : keys %$export_tags); | ||||
227 | 1 | 28µs | 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 $pkg"); | ||||
231 | } | ||||
232 | } | ||||
233 | |||||
234 | sub heavy_require_version { | ||||
235 | my($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 | ||||
241 | 1 | 39µs | 1 | 94µs | _push_tags((caller)[0], "EXPORT", \@_); # spent 94µs making 1 call to Exporter::Heavy::_push_tags |
242 | } | ||||
243 | |||||
244 | sub heavy_export_ok_tags { | ||||
245 | _push_tags((caller)[0], "EXPORT_OK", \@_); | ||||
246 | } | ||||
247 | |||||
248 | 1 | 17µs | 1; | ||
# 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 | |||||
# 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 |