| Filename | /home/micha/.plenv/versions/5.38.2/lib/perl5/5.38.2/base.pm |
| Statements | Executed 160 statements in 1.06ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 4 | 4 | 4 | 116µs | 164µs | base::import |
| 4 | 1 | 1 | 17µs | 26µs | base::__ANON__[:76] |
| 1 | 1 | 1 | 11µs | 11µs | Test2::Util::Facets2Legacy::BEGIN@1 |
| 4 | 1 | 1 | 8µs | 8µs | base::has_fields |
| 4 | 1 | 1 | 6µs | 6µs | base::has_attr |
| 1 | 1 | 1 | 4µs | 8µs | base::BEGIN@4 |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:133] |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:134] |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:53] |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:60] |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:68] |
| 0 | 0 | 0 | 0s | 0s | base::__inc::scope_guard::DESTROY |
| 0 | 0 | 0 | 0s | 0s | base::__inc::unhook |
| 0 | 0 | 0 | 0s | 0s | base::get_attr |
| 0 | 0 | 0 | 0s | 0s | base::inherit_fields |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | 2 | 39µs | 1 | 11µs | # spent 11µs within Test2::Util::Facets2Legacy::BEGIN@1 which was called:
# once (11µs+0s) by Test2::Util::Facets2Legacy::BEGIN@10 at line 1 # spent 11µs making 1 call to Test2::Util::Facets2Legacy::BEGIN@1 |
| 2 | package base; | ||||
| 3 | |||||
| 4 | 2 | 847µs | 2 | 12µs | # spent 8µs (4+4) within base::BEGIN@4 which was called:
# once (4µs+4µs) by Test2::Util::Facets2Legacy::BEGIN@10 at line 4 # spent 8µs making 1 call to base::BEGIN@4
# spent 4µs making 1 call to strict::import |
| 5 | 1 | 400ns | our $VERSION = '2.27'; | ||
| 6 | 1 | 700ns | $VERSION =~ tr/_//d; | ||
| 7 | |||||
| 8 | # simplest way to avoid indexing of the package: no package statement | ||||
| 9 | sub base::__inc::unhook { @INC = grep !(ref eq 'CODE' && $_ == $_[0]), @INC } | ||||
| 10 | # instance is blessed array of coderefs to be removed from @INC at scope exit | ||||
| 11 | sub base::__inc::scope_guard::DESTROY { base::__inc::unhook $_ for @{$_[0]} } | ||||
| 12 | |||||
| 13 | # constant.pm is slow | ||||
| 14 | sub SUCCESS () { 1 } | ||||
| 15 | |||||
| 16 | sub PUBLIC () { 2**0 } | ||||
| 17 | sub PRIVATE () { 2**1 } | ||||
| 18 | sub INHERITED () { 2**2 } | ||||
| 19 | sub PROTECTED () { 2**3 } | ||||
| 20 | |||||
| 21 | |||||
| 22 | 1 | 500ns | my $Fattr = \%fields::attr; | ||
| 23 | |||||
| 24 | # spent 8µs within base::has_fields which was called 4 times, avg 2µs/call:
# 4 times (8µs+0s) by base::import at line 177, avg 2µs/call | ||||
| 25 | 4 | 2µs | my($base) = shift; | ||
| 26 | 4 | 3µs | my $fglob = ${"$base\::"}{FIELDS}; | ||
| 27 | 4 | 5µs | return( ($fglob && 'GLOB' eq ref($fglob) && *$fglob{HASH}) ? 1 : 0 ); | ||
| 28 | } | ||||
| 29 | |||||
| 30 | # spent 6µs within base::has_attr which was called 4 times, avg 1µs/call:
# 4 times (6µs+0s) by base::import at line 177, avg 1µs/call | ||||
| 31 | 4 | 800ns | my($proto) = shift; | ||
| 32 | 4 | 2µs | my($class) = ref $proto || $proto; | ||
| 33 | 4 | 5µs | return exists $Fattr->{$class}; | ||
| 34 | } | ||||
| 35 | |||||
| 36 | sub get_attr { | ||||
| 37 | $Fattr->{$_[0]} = [1] unless $Fattr->{$_[0]}; | ||||
| 38 | return $Fattr->{$_[0]}; | ||||
| 39 | } | ||||
| 40 | |||||
| 41 | 1 | 400ns | if ($] < 5.009) { | ||
| 42 | *get_fields = sub { | ||||
| 43 | # Shut up a possible typo warning. | ||||
| 44 | () = \%{$_[0].'::FIELDS'}; | ||||
| 45 | my $f = \%{$_[0].'::FIELDS'}; | ||||
| 46 | |||||
| 47 | # should be centralized in fields? perhaps | ||||
| 48 | # fields::mk_FIELDS_be_OK. Peh. As long as %{ $package . '::FIELDS' } | ||||
| 49 | # is used here anyway, it doesn't matter. | ||||
| 50 | bless $f, 'pseudohash' if (ref($f) ne 'pseudohash'); | ||||
| 51 | |||||
| 52 | return $f; | ||||
| 53 | } | ||||
| 54 | } | ||||
| 55 | else { | ||||
| 56 | *get_fields = sub { | ||||
| 57 | # Shut up a possible typo warning. | ||||
| 58 | () = \%{$_[0].'::FIELDS'}; | ||||
| 59 | return \%{$_[0].'::FIELDS'}; | ||||
| 60 | } | ||||
| 61 | 1 | 2µs | } | ||
| 62 | |||||
| 63 | 1 | 200ns | if ($] < 5.008) { | ||
| 64 | *_module_to_filename = sub { | ||||
| 65 | (my $fn = $_[0]) =~ s!::!/!g; | ||||
| 66 | $fn .= '.pm'; | ||||
| 67 | return $fn; | ||||
| 68 | } | ||||
| 69 | } | ||||
| 70 | else { | ||||
| 71 | # spent 26µs (17+9) within base::__ANON__[/home/micha/.plenv/versions/5.38.2/lib/perl5/5.38.2/base.pm:76] which was called 4 times, avg 7µs/call:
# 4 times (17µs+9µs) by base::import at line 103, avg 7µs/call | ||||
| 72 | 4 | 14µs | 4 | 7µs | (my $fn = $_[0]) =~ s!::!/!g; # spent 7µs making 4 calls to CORE::subst, avg 2µs/call |
| 73 | 4 | 1µs | $fn .= '.pm'; | ||
| 74 | 4 | 7µs | 4 | 2µs | utf8::encode($fn); # spent 2µs making 4 calls to utf8::encode, avg 550ns/call |
| 75 | 4 | 6µs | return $fn; | ||
| 76 | } | ||||
| 77 | 1 | 2µs | } | ||
| 78 | |||||
| 79 | |||||
| 80 | # spent 164µs (116+48) within base::import which was called 4 times, avg 41µs/call:
# once (30µs+16µs) by Spreadsheet::ParseXLSX::Decryptor::Standard::BEGIN@10 at line 10 of /home/micha/Projekt/spreadsheet-parsexlsx/lib/Spreadsheet/ParseXLSX/Decryptor/Standard.pm
# once (35µs+10µs) by Spreadsheet::ParseXLSX::Decryptor::Agile::BEGIN@10 at line 10 of /home/micha/Projekt/spreadsheet-parsexlsx/lib/Spreadsheet/ParseXLSX/Decryptor/Agile.pm
# once (30µs+11µs) by Test2::Util::Facets2Legacy::BEGIN@10 at line 10 of Test2/Util/Facets2Legacy.pm
# once (21µs+10µs) by Spreadsheet::ParseXLSX::Cell::BEGIN@11 at line 11 of /home/micha/Projekt/spreadsheet-parsexlsx/lib/Spreadsheet/ParseXLSX/Cell.pm | ||||
| 81 | 4 | 1µs | my $class = shift; | ||
| 82 | |||||
| 83 | 4 | 1µs | return SUCCESS unless @_; | ||
| 84 | |||||
| 85 | # List of base classes from which we will inherit %FIELDS. | ||||
| 86 | 4 | 700ns | my $fields_base; | ||
| 87 | |||||
| 88 | 4 | 2µs | my $inheritor = caller(0); | ||
| 89 | |||||
| 90 | 4 | 600ns | my @bases; | ||
| 91 | 4 | 2µs | foreach my $base (@_) { | ||
| 92 | 4 | 1µs | if ( $inheritor eq $base ) { | ||
| 93 | warn "Class '$inheritor' tried to inherit from itself\n"; | ||||
| 94 | } | ||||
| 95 | |||||
| 96 | 4 | 42µs | 4 | 6µs | next if grep $_->isa($base), ($inheritor, @bases); # spent 6µs making 4 calls to UNIVERSAL::isa, avg 2µs/call |
| 97 | |||||
| 98 | # Following blocks help isolate $SIG{__DIE__} and @INC changes | ||||
| 99 | { | ||||
| 100 | 8 | 1µs | my $sigdie; | ||
| 101 | { | ||||
| 102 | 8 | 6µs | local $SIG{__DIE__}; | ||
| 103 | 4 | 5µs | 4 | 26µs | my $fn = _module_to_filename($base); # spent 26µs making 4 calls to base::__ANON__[base.pm:76], avg 7µs/call |
| 104 | 4 | 400ns | my $dot_hidden; | ||
| 105 | 4 | 1µs | eval { | ||
| 106 | 4 | 200ns | my $guard; | ||
| 107 | 4 | 1µs | if ($INC[-1] eq '.' && %{"$base\::"}) { | ||
| 108 | # So: the package already exists => this an optional load | ||||
| 109 | # And: there is a dot at the end of @INC => we want to hide it | ||||
| 110 | # However: we only want to hide it during our *own* require() | ||||
| 111 | # (i.e. without affecting nested require()s). | ||||
| 112 | # So we add a hook to @INC whose job is to hide the dot, but which | ||||
| 113 | # first checks checks the callstack depth, because within nested | ||||
| 114 | # require()s the callstack is deeper. | ||||
| 115 | # Since CORE::GLOBAL::require makes it unknowable in advance what | ||||
| 116 | # the exact relevant callstack depth will be, we have to record it | ||||
| 117 | # inside a hook. So we put another hook just for that at the front | ||||
| 118 | # of @INC, where it's guaranteed to run -- immediately. | ||||
| 119 | # The dot-hiding hook does its job by sitting directly in front of | ||||
| 120 | # the dot and removing itself from @INC when reached. This causes | ||||
| 121 | # the dot to move up one index in @INC, causing the loop inside | ||||
| 122 | # pp_require() to skip it. | ||||
| 123 | # Loaded coded may disturb this precise arrangement, but that's OK | ||||
| 124 | # because the hook is inert by that time. It is only active during | ||||
| 125 | # the top-level require(), when @INC is in our control. The only | ||||
| 126 | # possible gotcha is if other hooks already in @INC modify @INC in | ||||
| 127 | # some way during that initial require(). | ||||
| 128 | # Note that this jiggery hookery works just fine recursively: if | ||||
| 129 | # a module loaded via base.pm uses base.pm itself, there will be | ||||
| 130 | # one pair of hooks in @INC per base::import call frame, but the | ||||
| 131 | # pairs from different nestings do not interfere with each other. | ||||
| 132 | my $lvl; | ||||
| 133 | unshift @INC, sub { return if defined $lvl; 1 while defined caller ++$lvl; () }; | ||||
| 134 | splice @INC, -1, 0, sub { return if defined caller $lvl; ++$dot_hidden, &base::__inc::unhook; () }; | ||||
| 135 | $guard = bless [ @INC[0,-2] ], 'base::__inc::scope_guard'; | ||||
| 136 | } | ||||
| 137 | 4 | 2µs | require $fn | ||
| 138 | }; | ||||
| 139 | 4 | 600ns | if ($dot_hidden && (my @fn = grep -e && !( -d _ || -b _ ), $fn.'c', $fn)) { | ||
| 140 | require Carp; | ||||
| 141 | Carp::croak(<<ERROR); | ||||
| 142 | Base class package "$base" is not empty but "$fn[0]" exists in the current directory. | ||||
| 143 | To help avoid security issues, base.pm now refuses to load optional modules | ||||
| 144 | from the current working directory when it is the last entry in \@INC. | ||||
| 145 | If your software worked on previous versions of Perl, the best solution | ||||
| 146 | is to use FindBin to detect the path properly and to add that path to | ||||
| 147 | \@INC. As a last resort, you can re-enable looking in the current working | ||||
| 148 | directory by adding "use lib '.'" to your code. | ||||
| 149 | ERROR | ||||
| 150 | } | ||||
| 151 | # Only ignore "Can't locate" errors from our eval require. | ||||
| 152 | # Other fatal errors (syntax etc) must be reported. | ||||
| 153 | # | ||||
| 154 | # changing the check here is fragile - if the check | ||||
| 155 | # here isn't catching every error you want, you should | ||||
| 156 | # probably be using parent.pm, which doesn't try to | ||||
| 157 | # guess whether require is needed or failed, | ||||
| 158 | # see [perl #118561] | ||||
| 159 | 4 | 6µs | 4 | 900ns | die if $@ && $@ !~ /^Can't locate \Q$fn\E .*? at .* line [0-9]+(?:, <[^>]*> (?:line|chunk) [0-9]+)?\.\n\z/s # spent 900ns making 4 calls to CORE::match, avg 225ns/call |
| 160 | || $@ =~ /Compilation failed in require at .* line [0-9]+(?:, <[^>]*> (?:line|chunk) [0-9]+)?\.\n\z/; | ||||
| 161 | 4 | 4µs | unless (%{"$base\::"}) { | ||
| 162 | require Carp; | ||||
| 163 | local $" = " "; | ||||
| 164 | Carp::croak(<<ERROR); | ||||
| 165 | Base class package "$base" is empty. | ||||
| 166 | (Perhaps you need to 'use' the module which defines that package first, | ||||
| 167 | or make that module available in \@INC (\@INC contains: @INC). | ||||
| 168 | ERROR | ||||
| 169 | } | ||||
| 170 | 4 | 8µs | $sigdie = $SIG{__DIE__} || undef; | ||
| 171 | } | ||||
| 172 | # Make sure a global $SIG{__DIE__} makes it out of the localization. | ||||
| 173 | 4 | 1µs | $SIG{__DIE__} = $sigdie if defined $sigdie; | ||
| 174 | } | ||||
| 175 | 4 | 1µs | push @bases, $base; | ||
| 176 | |||||
| 177 | 4 | 7µs | 8 | 14µs | if ( has_fields($base) || has_attr($base) ) { # spent 8µs making 4 calls to base::has_fields, avg 2µs/call
# spent 6µs making 4 calls to base::has_attr, avg 1µs/call |
| 178 | # No multiple fields inheritance *suck* | ||||
| 179 | if ($fields_base) { | ||||
| 180 | require Carp; | ||||
| 181 | Carp::croak("Can't multiply inherit fields"); | ||||
| 182 | } else { | ||||
| 183 | $fields_base = $base; | ||||
| 184 | } | ||||
| 185 | } | ||||
| 186 | } | ||||
| 187 | # Save this until the end so it's all or nothing if the above loop croaks. | ||||
| 188 | 4 | 19µs | push @{"$inheritor\::ISA"}, @bases; | ||
| 189 | |||||
| 190 | 4 | 8µs | if( defined $fields_base ) { | ||
| 191 | inherit_fields($inheritor, $fields_base); | ||||
| 192 | } | ||||
| 193 | } | ||||
| 194 | |||||
| 195 | |||||
| 196 | sub inherit_fields { | ||||
| 197 | my($derived, $base) = @_; | ||||
| 198 | |||||
| 199 | return SUCCESS unless $base; | ||||
| 200 | |||||
| 201 | my $battr = get_attr($base); | ||||
| 202 | my $dattr = get_attr($derived); | ||||
| 203 | my $dfields = get_fields($derived); | ||||
| 204 | my $bfields = get_fields($base); | ||||
| 205 | |||||
| 206 | $dattr->[0] = @$battr; | ||||
| 207 | |||||
| 208 | if( keys %$dfields ) { | ||||
| 209 | warn <<"END"; | ||||
| 210 | $derived is inheriting from $base but already has its own fields! | ||||
| 211 | This will cause problems. Be sure you use base BEFORE declaring fields. | ||||
| 212 | END | ||||
| 213 | |||||
| 214 | } | ||||
| 215 | |||||
| 216 | # Iterate through the base's fields adding all the non-private | ||||
| 217 | # ones to the derived class. Hang on to the original attribute | ||||
| 218 | # (Public, Private, etc...) and add Inherited. | ||||
| 219 | # This is all too complicated to do efficiently with add_fields(). | ||||
| 220 | while (my($k,$v) = each %$bfields) { | ||||
| 221 | my $fno; | ||||
| 222 | if ($fno = $dfields->{$k} and $fno != $v) { | ||||
| 223 | require Carp; | ||||
| 224 | Carp::croak ("Inherited fields can't override existing fields"); | ||||
| 225 | } | ||||
| 226 | |||||
| 227 | if( $battr->[$v] & PRIVATE ) { | ||||
| 228 | $dattr->[$v] = PRIVATE | INHERITED; | ||||
| 229 | } | ||||
| 230 | else { | ||||
| 231 | $dattr->[$v] = INHERITED | $battr->[$v]; | ||||
| 232 | $dfields->{$k} = $v; | ||||
| 233 | } | ||||
| 234 | } | ||||
| 235 | |||||
| 236 | foreach my $idx (1..$#{$battr}) { | ||||
| 237 | next if defined $dattr->[$idx]; | ||||
| 238 | $dattr->[$idx] = $battr->[$idx] & INHERITED; | ||||
| 239 | } | ||||
| 240 | } | ||||
| 241 | |||||
| 242 | |||||
| 243 | 1 | 4µs | 1; | ||
| 244 | |||||
| 245 | __END__ |