Filename | /home/ss5/perl5/perlbrew/perls/perl-5.22.0/lib/5.22.0/Exporter/Heavy.pm |
Statements | Executed 1692 statements in 12.3ms |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
5 | 2 | 1 | 8.89ms | 8.90ms | _rebuild_cache | Exporter::Heavy::
26 | 1 | 1 | 2.30ms | 11.6ms | heavy_export | Exporter::Heavy::
2222 | 6 | 1 | 114µs | 114µs | CORE:subst (opcode) | Exporter::Heavy::
7 | 1 | 1 | 64µs | 64µs | _push_tags | Exporter::Heavy::
7 | 1 | 1 | 24µs | 88µs | heavy_export_ok_tags | Exporter::Heavy::
2 | 1 | 1 | 22µs | 183µs | heavy_export_to_level | Exporter::Heavy::
44 | 5 | 1 | 18µs | 18µs | CORE:match (opcode) | Exporter::Heavy::
3 | 1 | 1 | 8µs | 9µs | __ANON__[:63] | Exporter::Heavy::
1 | 1 | 1 | 8µs | 9µs | BEGIN@3 | Exporter::Heavy::
1 | 1 | 1 | 8µs | 14µs | BEGIN@202 | Exporter::Heavy::
1 | 1 | 1 | 3µs | 8µs | BEGIN@4 | Exporter::Heavy::
0 | 0 | 0 | 0s | 0s | __ANON__[:57] | Exporter::Heavy::
0 | 0 | 0 | 0s | 0s | heavy_export_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 | 16µs | 2 | 10µs | # spent 9µs (8+1) within Exporter::Heavy::BEGIN@3 which was called:
# once (8µs+1µs) by Exporter::as_heavy at line 3 # spent 9µs making 1 call to Exporter::Heavy::BEGIN@3
# spent 1µs making 1 call to strict::import |
4 | 2 | 570µs | 2 | 14µs | # spent 8µs (3+5) within Exporter::Heavy::BEGIN@4 which was called:
# once (3µs+5µs) by Exporter::as_heavy at line 4 # spent 8µs making 1 call to Exporter::Heavy::BEGIN@4
# spent 5µs making 1 call to strict::unimport |
5 | |||||
6 | # On one line so MakeMaker will see it. | ||||
7 | 2 | 700ns | require Exporter; our $VERSION = $Exporter::VERSION; | ||
8 | |||||
9 | =head1 NAME | ||||
10 | |||||
11 | Exporter::Heavy - Exporter guts | ||||
12 | |||||
13 | =head1 SYNOPSIS | ||||
14 | |||||
15 | (internal use only) | ||||
16 | |||||
17 | =head1 DESCRIPTION | ||||
18 | |||||
19 | No user-serviceable parts inside. | ||||
20 | |||||
21 | =cut | ||||
22 | |||||
23 | # | ||||
24 | # We go to a lot of trouble not to 'require Carp' at file scope, | ||||
25 | # because Carp requires Exporter, and something has to give. | ||||
26 | # | ||||
27 | |||||
28 | sub _rebuild_cache { | ||||
29 | 5 | 2µs | my ($pkg, $exports, $cache) = @_; | ||
30 | 5 | 4.51ms | 169 | 2µs | s/^&// foreach @$exports; # spent 2µs making 169 calls to Exporter::Heavy::CORE:subst, avg 10ns/call |
31 | 5 | 35µs | @{$cache}{@$exports} = (1) x @$exports; | ||
32 | 5 | 5µs | my $ok = \@{"${pkg}::EXPORT_OK"}; | ||
33 | 5 | 14µs | if (@$ok) { | ||
34 | 5 | 4.20ms | 1309 | 12µs | s/^&// foreach @$ok; # spent 12µs making 1309 calls to Exporter::Heavy::CORE:subst, avg 9ns/call |
35 | 5 | 146µs | @{$cache}{@$ok} = (1) x @$ok; | ||
36 | } | ||||
37 | } | ||||
38 | |||||
39 | # spent 11.6ms (2.30+9.34) within Exporter::Heavy::heavy_export which was called 26 times, avg 447µs/call:
# 26 times (2.30ms+9.34ms) by Exporter::Heavy::heavy_export_to_level or Exporter::import or IO::Socket::import at line 25 of Exporter.pm, avg 447µs/call | ||||
40 | |||||
41 | # Save the old __WARN__ handler in case it was defined | ||||
42 | 26 | 14µs | my $oldwarn = $SIG{__WARN__}; | ||
43 | |||||
44 | # First make import warnings look like they're coming from the "use". | ||||
45 | local $SIG{__WARN__} = sub { | ||||
46 | # restore it back so proper stacking occurs | ||||
47 | local $SIG{__WARN__} = $oldwarn; | ||||
48 | my $text = shift; | ||||
49 | if ($text =~ s/ at \S*Exporter\S*.pm line \d+.*\n//) { | ||||
50 | require Carp; | ||||
51 | local $Carp::CarpLevel = 1; # ignore package calling us too. | ||||
52 | Carp::carp($text); | ||||
53 | } | ||||
54 | else { | ||||
55 | warn $text; | ||||
56 | } | ||||
57 | 26 | 64µs | }; | ||
58 | # spent 9µs (8+500ns) within Exporter::Heavy::__ANON__[/home/ss5/perl5/perlbrew/perls/perl-5.22.0/lib/5.22.0/Exporter/Heavy.pm:63] which was called 3 times, avg 3µs/call:
# 3 times (8µs+500ns) by Carp::croak at line 166 of Carp.pm, avg 3µs/call | ||||
59 | 3 | 700ns | require Carp; | ||
60 | 3 | 800ns | local $Carp::CarpLevel = 1; # ignore package calling us too. | ||
61 | 3 | 9µs | 3 | 500ns | Carp::croak("$_[0]Illegal null symbol in \@${1}::EXPORT") # spent 500ns making 3 calls to Exporter::Heavy::CORE:match, avg 167ns/call |
62 | if $_[0] =~ /^Unable to create sub named "(.*?)::"/; | ||||
63 | 26 | 48µs | }; | ||
64 | |||||
65 | 26 | 18µs | my($pkg, $callpkg, @imports) = @_; | ||
66 | 26 | 4µs | my($type, $sym, $cache_is_current, $oops); | ||
67 | my($exports, $export_cache) = (\@{"${pkg}::EXPORT"}, | ||||
68 | 26 | 34µs | $Exporter::Cache{$pkg} ||= {}); | ||
69 | |||||
70 | 26 | 11µs | if (@imports) { | ||
71 | 20 | 29µs | if (!%$export_cache) { | ||
72 | 2 | 4µs | 2 | 4.70ms | _rebuild_cache ($pkg, $exports, $export_cache); # spent 4.70ms making 2 calls to Exporter::Heavy::_rebuild_cache, avg 2.35ms/call |
73 | 2 | 700ns | $cache_is_current = 1; | ||
74 | } | ||||
75 | |||||
76 | 20 | 65µs | 23 | 12µs | if (grep m{^[/!:]}, @imports) { # spent 12µs making 23 calls to Exporter::Heavy::CORE:match, avg 517ns/call |
77 | 13 | 11µs | my $tagsref = \%{"${pkg}::EXPORT_TAGS"}; | ||
78 | 13 | 2µs | my $tagdata; | ||
79 | my %imports; | ||||
80 | my($remove, $spec, @names, @allexports); | ||||
81 | # negated first item implies starting with default set: | ||||
82 | 13 | 29µs | 13 | 4µs | unshift @imports, ':DEFAULT' if $imports[0] =~ m/^!/; # spent 4µs making 13 calls to Exporter::Heavy::CORE:match, avg 269ns/call |
83 | 13 | 9µs | foreach $spec (@imports){ | ||
84 | 15 | 22µs | 15 | 3µs | $remove = $spec =~ s/^!//; # spent 3µs making 15 calls to Exporter::Heavy::CORE:subst, avg 227ns/call |
85 | |||||
86 | 15 | 30µs | 17 | 11µs | if ($spec =~ s/^://){ # spent 10µs making 15 calls to Exporter::Heavy::CORE:subst, avg 660ns/call
# spent 1µs making 2 calls to Exporter::Heavy::CORE:match, avg 500ns/call |
87 | 13 | 39µs | if ($spec eq 'DEFAULT'){ | ||
88 | @names = @$exports; | ||||
89 | } | ||||
90 | elsif ($tagdata = $tagsref->{$spec}) { | ||||
91 | @names = @$tagdata; | ||||
92 | } | ||||
93 | else { | ||||
94 | warn qq["$spec" is not defined in %${pkg}::EXPORT_TAGS]; | ||||
95 | ++$oops; | ||||
96 | next; | ||||
97 | } | ||||
98 | } | ||||
99 | elsif ($spec =~ m:^/(.*)/$:){ | ||||
100 | my $patn = $1; | ||||
101 | @allexports = keys %$export_cache unless @allexports; # only do keys once | ||||
102 | @names = grep(/$patn/, @allexports); # not anchored by default | ||||
103 | } | ||||
104 | else { | ||||
105 | 2 | 2µs | @names = ($spec); # is a normal symbol name | ||
106 | } | ||||
107 | |||||
108 | 15 | 2µs | warn "Import ".($remove ? "del":"add").": @names " | ||
109 | if $Exporter::Verbose; | ||||
110 | |||||
111 | 15 | 13µs | if ($remove) { | ||
112 | 2 | 1µs | foreach $sym (@names) { delete $imports{$sym} } | ||
113 | } | ||||
114 | else { | ||||
115 | 13 | 52µs | @imports{@names} = (1) x @names; | ||
116 | } | ||||
117 | } | ||||
118 | 13 | 57µs | @imports = keys %imports; | ||
119 | } | ||||
120 | |||||
121 | 20 | 3µs | my @carp; | ||
122 | 20 | 8µs | foreach $sym (@imports) { | ||
123 | 285 | 57µs | if (!$export_cache->{$sym}) { | ||
124 | 3 | 10µs | 6 | 1µs | if ($sym =~ m/^\d/) { # spent 700ns making 3 calls to Exporter::Heavy::CORE:match, avg 233ns/call
# spent 300ns making 3 calls to Exporter::Heavy::CORE:subst, avg 100ns/call |
125 | $pkg->VERSION($sym); # inherit from UNIVERSAL | ||||
126 | # If the version number was the only thing specified | ||||
127 | # then we should act as if nothing was specified: | ||||
128 | if (@imports == 1) { | ||||
129 | @imports = @$exports; | ||||
130 | last; | ||||
131 | } | ||||
132 | # We need a way to emulate 'use Foo ()' but still | ||||
133 | # allow an easy version check: "use Foo 1.23, ''"; | ||||
134 | if (@imports == 2 and !$imports[1]) { | ||||
135 | @imports = (); | ||||
136 | last; | ||||
137 | } | ||||
138 | } elsif ($sym !~ s/^&// || !$export_cache->{$sym}) { | ||||
139 | # Last chance - see if they've updated EXPORT_OK since we | ||||
140 | # cached it. | ||||
141 | |||||
142 | 3 | 700ns | unless ($cache_is_current) { | ||
143 | 3 | 44µs | %$export_cache = (); | ||
144 | 3 | 12µs | 3 | 4.20ms | _rebuild_cache ($pkg, $exports, $export_cache); # spent 4.20ms making 3 calls to Exporter::Heavy::_rebuild_cache, avg 1.40ms/call |
145 | 3 | 800ns | $cache_is_current = 1; | ||
146 | } | ||||
147 | |||||
148 | 3 | 1µs | if (!$export_cache->{$sym}) { | ||
149 | # accumulate the non-exports | ||||
150 | 3 | 3µs | push @carp, | ||
151 | qq["$sym" is not exported by the $pkg module\n]; | ||||
152 | 3 | 600ns | $oops++; | ||
153 | } | ||||
154 | } | ||||
155 | } | ||||
156 | } | ||||
157 | 20 | 6µs | if ($oops) { | ||
158 | 3 | 1µs | require Carp; | ||
159 | 3 | 4µs | 3 | 314µs | Carp::croak("@{carp}Can't continue after import errors"); # spent 314µs making 3 calls to Carp::croak, avg 105µs/call |
160 | } | ||||
161 | } | ||||
162 | else { | ||||
163 | 6 | 25µs | @imports = @$exports; | ||
164 | } | ||||
165 | |||||
166 | my($fail, $fail_cache) = (\@{"${pkg}::EXPORT_FAIL"}, | ||||
167 | 23 | 40µs | $Exporter::FailCache{$pkg} ||= {}); | ||
168 | |||||
169 | 23 | 7µs | if (@$fail) { | ||
170 | if (!%$fail_cache) { | ||||
171 | # Build cache of symbols. Optimise the lookup by adding | ||||
172 | # barewords twice... both with and without a leading &. | ||||
173 | # (Technique could be applied to $export_cache at cost of memory) | ||||
174 | my @expanded = map { /^\w/ ? ($_, '&'.$_) : $_ } @$fail; | ||||
175 | warn "${pkg}::EXPORT_FAIL cached: @expanded" if $Exporter::Verbose; | ||||
176 | @{$fail_cache}{@expanded} = (1) x @expanded; | ||||
177 | } | ||||
178 | my @failed; | ||||
179 | foreach $sym (@imports) { push(@failed, $sym) if $fail_cache->{$sym} } | ||||
180 | if (@failed) { | ||||
181 | @failed = $pkg->export_fail(@failed); | ||||
182 | foreach $sym (@failed) { | ||||
183 | require Carp; | ||||
184 | Carp::carp(qq["$sym" is not implemented by the $pkg module ], | ||||
185 | "on this architecture"); | ||||
186 | } | ||||
187 | if (@failed) { | ||||
188 | require Carp; | ||||
189 | Carp::croak("Can't continue after import errors"); | ||||
190 | } | ||||
191 | } | ||||
192 | } | ||||
193 | |||||
194 | 23 | 3µs | warn "Importing into $callpkg from $pkg: ", | ||
195 | join(", ",sort @imports) if $Exporter::Verbose; | ||||
196 | |||||
197 | 23 | 197µs | foreach $sym (@imports) { | ||
198 | # shortcut for the common case of no type character | ||||
199 | 711 | 1.39ms | 711 | 87µs | (*{"${callpkg}::$sym"} = \&{"${pkg}::$sym"}, next) # spent 87µs making 711 calls to Exporter::Heavy::CORE:subst, avg 122ns/call |
200 | unless $sym =~ s/^(\W)//; | ||||
201 | 11 | 4µs | $type = $1; | ||
202 | 2 | 279µs | 2 | 21µs | # spent 14µs (8+7) within Exporter::Heavy::BEGIN@202 which was called:
# once (8µs+7µs) by Exporter::as_heavy at line 202 # spent 14µs making 1 call to Exporter::Heavy::BEGIN@202
# spent 7µs making 1 call to warnings::unimport |
203 | *{"${callpkg}::$sym"} = | ||||
204 | $type eq '&' ? \&{"${pkg}::$sym"} : | ||||
205 | $type eq '$' ? \${"${pkg}::$sym"} : | ||||
206 | $type eq '@' ? \@{"${pkg}::$sym"} : | ||||
207 | $type eq '%' ? \%{"${pkg}::$sym"} : | ||||
208 | $type eq '*' ? *{"${pkg}::$sym"} : | ||||
209 | 11 | 28µs | do { require Carp; Carp::croak("Can't export symbol: $type$sym") }; | ||
210 | } | ||||
211 | } | ||||
212 | |||||
213 | sub heavy_export_to_level | ||||
214 | # spent 183µs (22+161) within Exporter::Heavy::heavy_export_to_level which was called 2 times, avg 91µs/call:
# 2 times (22µs+161µs) by Time::HiRes::import at line 81 of Exporter.pm, avg 91µs/call | ||||
215 | 2 | 1µs | my $pkg = shift; | ||
216 | 2 | 500ns | my $level = shift; | ||
217 | 2 | 2µs | (undef) = shift; # XXX redundant arg | ||
218 | 2 | 2µs | my $callpkg = caller($level); | ||
219 | 2 | 10µs | 2 | 29µs | $pkg->export($callpkg, @_); # spent 29µs making 2 calls to Exporter::export, avg 15µs/call |
220 | } | ||||
221 | |||||
222 | # Utility functions | ||||
223 | |||||
224 | # spent 64µs within Exporter::Heavy::_push_tags which was called 7 times, avg 9µs/call:
# 7 times (64µs+0s) by Exporter::Heavy::heavy_export_ok_tags at line 250, avg 9µs/call | ||||
225 | 7 | 4µs | my($pkg, $var, $syms) = @_; | ||
226 | 7 | 3µs | my @nontag = (); | ||
227 | 7 | 9µs | my $export_tags = \%{"${pkg}::EXPORT_TAGS"}; | ||
228 | push(@{"${pkg}::$var"}, | ||||
229 | 7 | 39µs | map { $export_tags->{$_} ? @{$export_tags->{$_}} | ||
230 | : scalar(push(@nontag,$_),$_) } | ||||
231 | (@$syms) ? @$syms : keys %$export_tags); | ||||
232 | 7 | 15µs | if (@nontag and $^W) { | ||
233 | # This may change to a die one day | ||||
234 | require Carp; | ||||
235 | Carp::carp(join(", ", @nontag)." are not tags of $pkg"); | ||||
236 | } | ||||
237 | } | ||||
238 | |||||
239 | sub heavy_require_version { | ||||
240 | my($self, $wanted) = @_; | ||||
241 | my $pkg = ref $self || $self; | ||||
242 | return ${pkg}->VERSION($wanted); | ||||
243 | } | ||||
244 | |||||
245 | sub heavy_export_tags { | ||||
246 | _push_tags((caller)[0], "EXPORT", \@_); | ||||
247 | } | ||||
248 | |||||
249 | # spent 88µs (24+64) within Exporter::Heavy::heavy_export_ok_tags which was called 7 times, avg 13µs/call:
# 7 times (24µs+64µs) by DBI::BEGIN@181 or IO::Compress::Deflate::BEGIN@11 or IO::Uncompress::Inflate::BEGIN@11 or Search::Elasticsearch::Role::Cxn::BEGIN@10 or Search::Elasticsearch::Role::Cxn::BEGIN@11 or Search::Elasticsearch::Role::Cxn::BEGIN@8 or Search::Elasticsearch::Role::Cxn::BEGIN@9 at line 89 of Exporter.pm, avg 13µs/call | ||||
250 | 7 | 27µs | 7 | 64µs | _push_tags((caller)[0], "EXPORT_OK", \@_); # spent 64µs making 7 calls to Exporter::Heavy::_push_tags, avg 9µs/call |
251 | } | ||||
252 | |||||
253 | 1 | 2µs | 1; | ||
# spent 18µs within Exporter::Heavy::CORE:match which was called 44 times, avg 400ns/call:
# 23 times (12µs+0s) by Exporter::Heavy::heavy_export at line 76, avg 517ns/call
# 13 times (4µs+0s) by Exporter::Heavy::heavy_export at line 82, avg 269ns/call
# 3 times (700ns+0s) by Exporter::Heavy::heavy_export at line 124, avg 233ns/call
# 3 times (500ns+0s) by Exporter::Heavy::__ANON__[/home/ss5/perl5/perlbrew/perls/perl-5.22.0/lib/5.22.0/Exporter/Heavy.pm:63] at line 61, avg 167ns/call
# 2 times (1µs+0s) by Exporter::Heavy::heavy_export at line 86, avg 500ns/call | |||||
# spent 114µs within Exporter::Heavy::CORE:subst which was called 2222 times, avg 51ns/call:
# 1309 times (12µs+0s) by Exporter::Heavy::_rebuild_cache at line 34, avg 9ns/call
# 711 times (87µs+0s) by Exporter::Heavy::heavy_export at line 199, avg 122ns/call
# 169 times (2µs+0s) by Exporter::Heavy::_rebuild_cache at line 30, avg 10ns/call
# 15 times (10µs+0s) by Exporter::Heavy::heavy_export at line 86, avg 660ns/call
# 15 times (3µs+0s) by Exporter::Heavy::heavy_export at line 84, avg 227ns/call
# 3 times (300ns+0s) by Exporter::Heavy::heavy_export at line 124, avg 100ns/call |