| Filename | /home/hinrik/perl5/perlbrew/perls/perl-5.13.5/lib/5.13.5/base.pm |
| Statements | Executed 143 statements in 1.39ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 5 | 5 | 4 | 1.01ms | 1.13ms | base::import |
| 1 | 1 | 1 | 405µs | 914µs | base::BEGIN@4 |
| 5 | 1 | 1 | 46µs | 46µs | base::has_version |
| 5 | 1 | 1 | 32µs | 32µs | base::has_fields |
| 5 | 1 | 1 | 30µs | 30µs | base::has_attr |
| 1 | 1 | 1 | 21µs | 44µs | base::BEGIN@3 |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:54] |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:61] |
| 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 | package base; | ||||
| 2 | |||||
| 3 | 2 | 30µs | 2 | 68µs | # spent 44µs (21+23) within base::BEGIN@3 which was called:
# once (21µs+23µs) by Encode::BEGIN@13 at line 3 # spent 44µs making 1 call to base::BEGIN@3
# spent 23µs making 1 call to strict::import |
| 4 | 2 | 870µs | 2 | 951µs | # spent 914µs (405+509) within base::BEGIN@4 which was called:
# once (405µs+509µs) by Encode::BEGIN@13 at line 4 # spent 914µs making 1 call to base::BEGIN@4
# spent 36µs making 1 call to vars::import |
| 5 | 1 | 2µs | $VERSION = '2.15'; | ||
| 6 | 1 | 15µs | $VERSION = eval $VERSION; # spent 3µs executing statements in string eval | ||
| 7 | |||||
| 8 | # constant.pm is slow | ||||
| 9 | sub SUCCESS () { 1 } | ||||
| 10 | |||||
| 11 | sub PUBLIC () { 2**0 } | ||||
| 12 | sub PRIVATE () { 2**1 } | ||||
| 13 | sub INHERITED () { 2**2 } | ||||
| 14 | sub PROTECTED () { 2**3 } | ||||
| 15 | |||||
| 16 | |||||
| 17 | 1 | 2µs | my $Fattr = \%fields::attr; | ||
| 18 | |||||
| 19 | # spent 32µs within base::has_fields which was called 5 times, avg 6µs/call:
# 5 times (32µs+0s) by base::import at line 113, avg 6µs/call | ||||
| 20 | 15 | 39µs | my($base) = shift; | ||
| 21 | my $fglob = ${"$base\::"}{FIELDS}; | ||||
| 22 | return( ($fglob && 'GLOB' eq ref($fglob) && *$fglob{HASH}) ? 1 : 0 ); | ||||
| 23 | } | ||||
| 24 | |||||
| 25 | # spent 46µs within base::has_version which was called 5 times, avg 9µs/call:
# 5 times (46µs+0s) by base::import at line 83, avg 9µs/call | ||||
| 26 | 15 | 51µs | my($base) = shift; | ||
| 27 | my $vglob = ${$base.'::'}{VERSION}; | ||||
| 28 | return( ($vglob && *$vglob{SCALAR}) ? 1 : 0 ); | ||||
| 29 | } | ||||
| 30 | |||||
| 31 | # spent 30µs within base::has_attr which was called 5 times, avg 6µs/call:
# 5 times (30µs+0s) by base::import at line 113, avg 6µs/call | ||||
| 32 | 15 | 34µs | my($proto) = shift; | ||
| 33 | my($class) = ref $proto || $proto; | ||||
| 34 | return exists $Fattr->{$class}; | ||||
| 35 | } | ||||
| 36 | |||||
| 37 | sub get_attr { | ||||
| 38 | $Fattr->{$_[0]} = [1] unless $Fattr->{$_[0]}; | ||||
| 39 | return $Fattr->{$_[0]}; | ||||
| 40 | } | ||||
| 41 | |||||
| 42 | 2 | 19µs | if ($] < 5.009) { | ||
| 43 | *get_fields = sub { | ||||
| 44 | # Shut up a possible typo warning. | ||||
| 45 | () = \%{$_[0].'::FIELDS'}; | ||||
| 46 | my $f = \%{$_[0].'::FIELDS'}; | ||||
| 47 | |||||
| 48 | # should be centralized in fields? perhaps | ||||
| 49 | # fields::mk_FIELDS_be_OK. Peh. As long as %{ $package . '::FIELDS' } | ||||
| 50 | # is used here anyway, it doesn't matter. | ||||
| 51 | bless $f, 'pseudohash' if (ref($f) ne 'pseudohash'); | ||||
| 52 | |||||
| 53 | return $f; | ||||
| 54 | } | ||||
| 55 | } | ||||
| 56 | else { | ||||
| 57 | *get_fields = sub { | ||||
| 58 | # Shut up a possible typo warning. | ||||
| 59 | () = \%{$_[0].'::FIELDS'}; | ||||
| 60 | return \%{$_[0].'::FIELDS'}; | ||||
| 61 | } | ||||
| 62 | } | ||||
| 63 | |||||
| 64 | # spent 1.13ms (1.01+121µs) within base::import which was called 5 times, avg 225µs/call:
# once (796µs+23µs) by Encode::BEGIN@13 at line 13 of Encode.pm
# once (56µs+28µs) by Sub::Name::BEGIN@49 at line 49 of Sub/Name.pm
# once (55µs+26µs) by Encode::Alias::BEGIN@8 at line 8 of Encode/Alias.pm
# once (53µs+24µs) by Variable::Magic::BEGIN@576 at line 576 of Variable/Magic.pm
# once (44µs+21µs) by Sub::Name::BEGIN@50 at line 50 of Sub/Name.pm | ||||
| 65 | 50 | 127µs | my $class = shift; | ||
| 66 | |||||
| 67 | return SUCCESS unless @_; | ||||
| 68 | |||||
| 69 | # List of base classes from which we will inherit %FIELDS. | ||||
| 70 | my $fields_base; | ||||
| 71 | |||||
| 72 | my $inheritor = caller(0); | ||||
| 73 | my @isa_classes; | ||||
| 74 | |||||
| 75 | my @bases; | ||||
| 76 | foreach my $base (@_) { | ||||
| 77 | 25 | 145µs | if ( $inheritor eq $base ) { | ||
| 78 | warn "Class '$inheritor' tried to inherit from itself\n"; | ||||
| 79 | } | ||||
| 80 | |||||
| 81 | 5 | 13µs | next if grep $_->isa($base), ($inheritor, @bases); # spent 13µs making 5 calls to UNIVERSAL::isa, avg 3µs/call | ||
| 82 | |||||
| 83 | 8 | 15µs | 5 | 46µs | if (has_version($base)) { # spent 46µs making 5 calls to base::has_version, avg 9µs/call |
| 84 | ${$base.'::VERSION'} = '-1, set by base.pm' | ||||
| 85 | unless defined ${$base.'::VERSION'}; | ||||
| 86 | } | ||||
| 87 | else { | ||||
| 88 | my $sigdie; | ||||
| 89 | { | ||||
| 90 | 5 | 35µs | local $SIG{__DIE__}; | ||
| 91 | eval "require $base"; # spent 664µs executing statements in string eval | ||||
| 92 | # Only ignore "Can't locate" errors from our eval require. | ||||
| 93 | # Other fatal errors (syntax etc) must be reported. | ||||
| 94 | die if $@ && $@ !~ /^Can't locate .*? at \(eval /; | ||||
| 95 | unless (%{"$base\::"}) { | ||||
| 96 | require Carp; | ||||
| 97 | local $" = " "; | ||||
| 98 | Carp::croak(<<ERROR); | ||||
| 99 | Base class package "$base" is empty. | ||||
| 100 | (Perhaps you need to 'use' the module which defines that package first, | ||||
| 101 | or make that module available in \@INC (\@INC contains: @INC). | ||||
| 102 | ERROR | ||||
| 103 | } | ||||
| 104 | $sigdie = $SIG{__DIE__} || undef; | ||||
| 105 | } | ||||
| 106 | # Make sure a global $SIG{__DIE__} makes it out of the localization. | ||||
| 107 | $SIG{__DIE__} = $sigdie if defined $sigdie; | ||||
| 108 | ${$base.'::VERSION'} = "-1, set by base.pm" | ||||
| 109 | unless defined ${$base.'::VERSION'}; | ||||
| 110 | } | ||||
| 111 | push @bases, $base; | ||||
| 112 | |||||
| 113 | 10 | 62µs | if ( has_fields($base) || has_attr($base) ) { # spent 32µs making 5 calls to base::has_fields, avg 6µs/call
# spent 30µs making 5 calls to base::has_attr, avg 6µs/call | ||
| 114 | # No multiple fields inheritance *suck* | ||||
| 115 | if ($fields_base) { | ||||
| 116 | require Carp; | ||||
| 117 | Carp::croak("Can't multiply inherit fields"); | ||||
| 118 | } else { | ||||
| 119 | $fields_base = $base; | ||||
| 120 | } | ||||
| 121 | } | ||||
| 122 | } | ||||
| 123 | # Save this until the end so it's all or nothing if the above loop croaks. | ||||
| 124 | push @{"$inheritor\::ISA"}, @isa_classes; | ||||
| 125 | |||||
| 126 | push @{"$inheritor\::ISA"}, @bases; | ||||
| 127 | |||||
| 128 | if( defined $fields_base ) { | ||||
| 129 | inherit_fields($inheritor, $fields_base); | ||||
| 130 | } | ||||
| 131 | } | ||||
| 132 | |||||
| 133 | |||||
| 134 | sub inherit_fields { | ||||
| 135 | my($derived, $base) = @_; | ||||
| 136 | |||||
| 137 | return SUCCESS unless $base; | ||||
| 138 | |||||
| 139 | my $battr = get_attr($base); | ||||
| 140 | my $dattr = get_attr($derived); | ||||
| 141 | my $dfields = get_fields($derived); | ||||
| 142 | my $bfields = get_fields($base); | ||||
| 143 | |||||
| 144 | $dattr->[0] = @$battr; | ||||
| 145 | |||||
| 146 | if( keys %$dfields ) { | ||||
| 147 | warn <<"END"; | ||||
| 148 | $derived is inheriting from $base but already has its own fields! | ||||
| 149 | This will cause problems. Be sure you use base BEFORE declaring fields. | ||||
| 150 | END | ||||
| 151 | |||||
| 152 | } | ||||
| 153 | |||||
| 154 | # Iterate through the base's fields adding all the non-private | ||||
| 155 | # ones to the derived class. Hang on to the original attribute | ||||
| 156 | # (Public, Private, etc...) and add Inherited. | ||||
| 157 | # This is all too complicated to do efficiently with add_fields(). | ||||
| 158 | while (my($k,$v) = each %$bfields) { | ||||
| 159 | my $fno; | ||||
| 160 | if ($fno = $dfields->{$k} and $fno != $v) { | ||||
| 161 | require Carp; | ||||
| 162 | Carp::croak ("Inherited fields can't override existing fields"); | ||||
| 163 | } | ||||
| 164 | |||||
| 165 | if( $battr->[$v] & PRIVATE ) { | ||||
| 166 | $dattr->[$v] = PRIVATE | INHERITED; | ||||
| 167 | } | ||||
| 168 | else { | ||||
| 169 | $dattr->[$v] = INHERITED | $battr->[$v]; | ||||
| 170 | $dfields->{$k} = $v; | ||||
| 171 | } | ||||
| 172 | } | ||||
| 173 | |||||
| 174 | foreach my $idx (1..$#{$battr}) { | ||||
| 175 | next if defined $dattr->[$idx]; | ||||
| 176 | $dattr->[$idx] = $battr->[$idx] & INHERITED; | ||||
| 177 | } | ||||
| 178 | } | ||||
| 179 | |||||
| 180 | |||||
| 181 | 1 | 5µs | 1; | ||
| 182 | |||||
| 183 | __END__ |