| File | /opt/wise/lib/perl5/5.10.0/Exporter/Heavy.pm | Statements Executed | 4002 | Total Time | 0.017172 seconds |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine | |
|---|---|---|---|---|---|---|
| 5 | 1 | 1 | 0.00015 | 0.00015 | Exporter::Heavy:: | _push_tags |
| 1 | 1 | 1 | 7.8e-5 | 7.8e-5 | Exporter::Heavy:: | _rebuild_cache |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | BEGIN |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | __ANON__[:54] |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | __ANON__[:60] |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | heavy_export |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | heavy_export_ok_tags |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | heavy_export_tags |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | heavy_export_to_level |
| 0 | 0 | 0 | 0 | 0 | Exporter::Heavy:: | heavy_require_version |
| Line | Stmts. | Exclusive Time | Avg. | Code |
|---|---|---|---|---|
| 1 | package Exporter::Heavy; | |||
| 2 | ||||
| 3 | 3 | 3.2e-5 | 1.1e-5 | use strict; # spent 11µs making 1 call to strict::import |
| 4 | 3 | 0.00116 | 0.00039 | no strict 'refs'; # spent 23µs making 1 call to strict::unimport |
| 5 | ||||
| 6 | # On one line so MakeMaker will see it. | |||
| 7 | 2 | 1.0e-5 | 5.0e-6 | require Exporter; our $VERSION = $Exporter::VERSION; |
| 8 | # Carp does this now for us, so we can finally live w/o Carp | |||
| 9 | #$Carp::Internal{"Exporter::Heavy"} = 1; | |||
| 10 | ||||
| 11 | =head1 NAME | |||
| 12 | ||||
| 13 | Exporter::Heavy - Exporter guts | |||
| 14 | ||||
| 15 | =head1 SYNOPSIS | |||
| 16 | ||||
| 17 | (internal use only) | |||
| 18 | ||||
| 19 | =head1 DESCRIPTION | |||
| 20 | ||||
| 21 | No user-serviceable parts inside. | |||
| 22 | ||||
| 23 | =cut | |||
| 24 | ||||
| 25 | # | |||
| 26 | # We go to a lot of trouble not to 'require Carp' at file scope, | |||
| 27 | # because Carp requires Exporter, and something has to give. | |||
| 28 | # | |||
| 29 | ||||
| 30 | # spent 78µs within Exporter::Heavy::_rebuild_cache which was called
# once (78µs+0) by Exporter::Heavy::heavy_export at line 69 | |||
| 31 | 6 | 1.6e-5 | 2.7e-6 | my ($pkg, $exports, $cache) = @_; |
| 32 | s/^&// foreach @$exports; | |||
| 33 | @{$cache}{@$exports} = (1) x @$exports; | |||
| 34 | my $ok = \@{"${pkg}::EXPORT_OK"}; | |||
| 35 | 3 | 3.5e-5 | 1.2e-5 | if (@$ok) { |
| 36 | s/^&// foreach @$ok; | |||
| 37 | 1 | 2.1e-5 | 2.1e-5 | @{$cache}{@$ok} = (1) x @$ok; |
| 38 | } | |||
| 39 | } | |||
| 40 | ||||
| 41 | sub heavy_export { | |||
| 42 | ||||
| 43 | # First make import warnings look like they're coming from the "use". | |||
| 44 | local $SIG{__WARN__} = sub { | |||
| 45 | my $text = shift; | |||
| 46 | if ($text =~ s/ at \S*Exporter\S*.pm line \d+.*\n//) { | |||
| 47 | require Carp; | |||
| 48 | local $Carp::CarpLevel = 1; # ignore package calling us too. | |||
| 49 | Carp::carp($text); | |||
| 50 | } | |||
| 51 | else { | |||
| 52 | warn $text; | |||
| 53 | } | |||
| 54 | 350 | 0.00144 | 4.1e-6 | }; |
| 55 | local $SIG{__DIE__} = sub { | |||
| 56 | require Carp; | |||
| 57 | local $Carp::CarpLevel = 1; # ignore package calling us too. | |||
| 58 | Carp::croak("$_[0]Illegal null symbol in \@${1}::EXPORT") | |||
| 59 | if $_[0] =~ /^Unable to create sub named "(.*?)::"/; | |||
| 60 | }; | |||
| 61 | ||||
| 62 | my($pkg, $callpkg, @imports) = @_; | |||
| 63 | my($type, $sym, $cache_is_current, $oops); | |||
| 64 | my($exports, $export_cache) = (\@{"${pkg}::EXPORT"}, | |||
| 65 | $Exporter::Cache{$pkg} ||= {}); | |||
| 66 | ||||
| 67 | 131 | 0.00045 | 3.4e-6 | if (@imports) { |
| 68 | 2 | 1.0e-5 | 5.0e-6 | if (!%$export_cache) { |
| 69 | _rebuild_cache ($pkg, $exports, $export_cache); # spent 78µs making 1 call to Exporter::Heavy::_rebuild_cache | |||
| 70 | $cache_is_current = 1; | |||
| 71 | } | |||
| 72 | ||||
| 73 | 147 | 0.00072 | 4.9e-6 | if (grep m{^[/!:]}, @imports) { |
| 74 | my $tagsref = \%{"${pkg}::EXPORT_TAGS"}; | |||
| 75 | my $tagdata; | |||
| 76 | my %imports; | |||
| 77 | my($remove, $spec, @names, @allexports); | |||
| 78 | # negated first item implies starting with default set: | |||
| 79 | unshift @imports, ':DEFAULT' if $imports[0] =~ m/^!/; | |||
| 80 | foreach $spec (@imports){ | |||
| 81 | 140 | 0.00033 | 2.3e-6 | $remove = $spec =~ s/^!//; |
| 82 | ||||
| 83 | 37 | 0.00073 | 2.0e-5 | if ($spec =~ s/^://){ |
| 84 | if ($spec eq 'DEFAULT'){ | |||
| 85 | @names = @$exports; | |||
| 86 | } | |||
| 87 | elsif ($tagdata = $tagsref->{$spec}) { | |||
| 88 | @names = @$tagdata; | |||
| 89 | } | |||
| 90 | else { | |||
| 91 | warn qq["$spec" is not defined in %${pkg}::EXPORT_TAGS]; | |||
| 92 | ++$oops; | |||
| 93 | next; | |||
| 94 | } | |||
| 95 | } | |||
| 96 | elsif ($spec =~ m:^/(.*)/$:){ | |||
| 97 | my $patn = $1; | |||
| 98 | @allexports = keys %$export_cache unless @allexports; # only do keys once | |||
| 99 | @names = grep(/$patn/, @allexports); # not anchored by default | |||
| 100 | } | |||
| 101 | else { | |||
| 102 | @names = ($spec); # is a normal symbol name | |||
| 103 | } | |||
| 104 | ||||
| 105 | warn "Import ".($remove ? "del":"add").": @names " | |||
| 106 | if $Exporter::Verbose; | |||
| 107 | ||||
| 108 | 35 | 0.00056 | 1.6e-5 | if ($remove) { |
| 109 | foreach $sym (@names) { delete $imports{$sym} } | |||
| 110 | } | |||
| 111 | else { | |||
| 112 | @imports{@names} = (1) x @names; | |||
| 113 | } | |||
| 114 | } | |||
| 115 | @imports = keys %imports; | |||
| 116 | } | |||
| 117 | ||||
| 118 | my @carp; | |||
| 119 | foreach $sym (@imports) { | |||
| 120 | 1363 | 0.00159 | 1.2e-6 | if (!$export_cache->{$sym}) { |
| 121 | if ($sym =~ m/^\d/) { | |||
| 122 | $pkg->VERSION($sym); # inherit from UNIVERSAL | |||
| 123 | # If the version number was the only thing specified | |||
| 124 | # then we should act as if nothing was specified: | |||
| 125 | if (@imports == 1) { | |||
| 126 | @imports = @$exports; | |||
| 127 | last; | |||
| 128 | } | |||
| 129 | # We need a way to emulate 'use Foo ()' but still | |||
| 130 | # allow an easy version check: "use Foo 1.23, ''"; | |||
| 131 | if (@imports == 2 and !$imports[1]) { | |||
| 132 | @imports = (); | |||
| 133 | last; | |||
| 134 | } | |||
| 135 | } elsif ($sym !~ s/^&// || !$export_cache->{$sym}) { | |||
| 136 | # Last chance - see if they've updated EXPORT_OK since we | |||
| 137 | # cached it. | |||
| 138 | ||||
| 139 | unless ($cache_is_current) { | |||
| 140 | %$export_cache = (); | |||
| 141 | _rebuild_cache ($pkg, $exports, $export_cache); | |||
| 142 | $cache_is_current = 1; | |||
| 143 | } | |||
| 144 | ||||
| 145 | if (!$export_cache->{$sym}) { | |||
| 146 | # accumulate the non-exports | |||
| 147 | push @carp, | |||
| 148 | qq["$sym" is not exported by the $pkg module\n]; | |||
| 149 | $oops++; | |||
| 150 | } | |||
| 151 | } | |||
| 152 | } | |||
| 153 | } | |||
| 154 | if ($oops) { | |||
| 155 | require Carp; | |||
| 156 | Carp::croak("@{carp}Can't continue after import errors"); | |||
| 157 | } | |||
| 158 | } | |||
| 159 | else { | |||
| 160 | @imports = @$exports; | |||
| 161 | } | |||
| 162 | ||||
| 163 | my($fail, $fail_cache) = (\@{"${pkg}::EXPORT_FAIL"}, | |||
| 164 | $Exporter::FailCache{$pkg} ||= {}); | |||
| 165 | ||||
| 166 | 12 | 3.0e-5 | 2.5e-6 | if (@$fail) { |
| 167 | 6 | 1.7e-5 | 2.8e-6 | if (!%$fail_cache) { |
| 168 | # Build cache of symbols. Optimise the lookup by adding | |||
| 169 | # barewords twice... both with and without a leading &. | |||
| 170 | # (Technique could be applied to $export_cache at cost of memory) | |||
| 171 | 2 | 5.0e-6 | 2.5e-6 | my @expanded = map { /^\w/ ? ($_, '&'.$_) : $_ } @$fail; |
| 172 | warn "${pkg}::EXPORT_FAIL cached: @expanded" if $Exporter::Verbose; | |||
| 173 | @{$fail_cache}{@expanded} = (1) x @expanded; | |||
| 174 | } | |||
| 175 | my @failed; | |||
| 176 | 12 | 1.0e-5 | 8.3e-7 | foreach $sym (@imports) { push(@failed, $sym) if $fail_cache->{$sym} } |
| 177 | if (@failed) { | |||
| 178 | @failed = $pkg->export_fail(@failed); | |||
| 179 | foreach $sym (@failed) { | |||
| 180 | require Carp; | |||
| 181 | Carp::carp(qq["$sym" is not implemented by the $pkg module ], | |||
| 182 | "on this architecture"); | |||
| 183 | } | |||
| 184 | if (@failed) { | |||
| 185 | require Carp; | |||
| 186 | Carp::croak("Can't continue after import errors"); | |||
| 187 | } | |||
| 188 | } | |||
| 189 | } | |||
| 190 | ||||
| 191 | warn "Importing into $callpkg from $pkg: ", | |||
| 192 | join(", ",sort @imports) if $Exporter::Verbose; | |||
| 193 | ||||
| 194 | foreach $sym (@imports) { | |||
| 195 | # shortcut for the common case of no type character | |||
| 196 | 1703 | 0.00931 | 5.5e-6 | (*{"${callpkg}::$sym"} = \&{"${pkg}::$sym"}, next) |
| 197 | unless $sym =~ s/^(\W)//; | |||
| 198 | $type = $1; | |||
| 199 | 3 | 0.00049 | 0.00016 | no warnings 'once'; # spent 22µs making 1 call to warnings::unimport |
| 200 | *{"${callpkg}::$sym"} = | |||
| 201 | $type eq '&' ? \&{"${pkg}::$sym"} : | |||
| 202 | $type eq '$' ? \${"${pkg}::$sym"} : | |||
| 203 | $type eq '@' ? \@{"${pkg}::$sym"} : | |||
| 204 | $type eq '%' ? \%{"${pkg}::$sym"} : | |||
| 205 | $type eq '*' ? *{"${pkg}::$sym"} : | |||
| 206 | do { require Carp; Carp::croak("Can't export symbol: $type$sym") }; | |||
| 207 | } | |||
| 208 | } | |||
| 209 | ||||
| 210 | sub heavy_export_to_level | |||
| 211 | { | |||
| 212 | 10 | 3.5e-5 | 3.5e-6 | my $pkg = shift; |
| 213 | my $level = shift; | |||
| 214 | (undef) = shift; # XXX redundant arg | |||
| 215 | my $callpkg = caller($level); | |||
| 216 | $pkg->export($callpkg, @_); # spent 44µs making 2 calls to Exporter::export, avg 22µs/call | |||
| 217 | } | |||
| 218 | ||||
| 219 | # Utility functions | |||
| 220 | ||||
| 221 | # spent 150µs within Exporter::Heavy::_push_tags which was called 5 times, avg 30µs/call:
# 5 times (150µs+0) by Exporter::Heavy::heavy_export_ok_tags at line 247, avg 30µs/call | |||
| 222 | 25 | 0.00012 | 4.7e-6 | my($pkg, $var, $syms) = @_; |
| 223 | my @nontag = (); | |||
| 224 | my $export_tags = \%{"${pkg}::EXPORT_TAGS"}; | |||
| 225 | push(@{"${pkg}::$var"}, | |||
| 226 | map { $export_tags->{$_} ? @{$export_tags->{$_}} | |||
| 227 | : scalar(push(@nontag,$_),$_) } | |||
| 228 | (@$syms) ? @$syms : keys %$export_tags); | |||
| 229 | if (@nontag and $^W) { | |||
| 230 | # This may change to a die one day | |||
| 231 | require Carp; | |||
| 232 | Carp::carp(join(", ", @nontag)." are not tags of $pkg"); | |||
| 233 | } | |||
| 234 | } | |||
| 235 | ||||
| 236 | sub heavy_require_version { | |||
| 237 | my($self, $wanted) = @_; | |||
| 238 | my $pkg = ref $self || $self; | |||
| 239 | return ${pkg}->VERSION($wanted); | |||
| 240 | } | |||
| 241 | ||||
| 242 | sub heavy_export_tags { | |||
| 243 | _push_tags((caller)[0], "EXPORT", \@_); | |||
| 244 | } | |||
| 245 | ||||
| 246 | sub heavy_export_ok_tags { | |||
| 247 | 5 | 5.5e-5 | 1.1e-5 | _push_tags((caller)[0], "EXPORT_OK", \@_); # spent 150µs making 5 calls to Exporter::Heavy::_push_tags, avg 30µs/call |
| 248 | } | |||
| 249 | ||||
| 250 | 1 | 4.0e-6 | 4.0e-6 | 1; |