| Filename | /usr/share/perl/5.18/base.pm |
| Statements | Executed 56 statements in 851µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 88µs | 101µs | base::import |
| 1 | 1 | 1 | 12µs | 23µs | base::BEGIN@3 |
| 1 | 1 | 1 | 6µs | 24µs | base::BEGIN@4 |
| 2 | 1 | 1 | 5µs | 5µs | base::has_fields |
| 2 | 1 | 1 | 4µs | 4µs | base::has_attr |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:47] |
| 0 | 0 | 0 | 0s | 0s | base::__ANON__[:54] |
| 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 | 27µs | 2 | 34µs | # spent 23µs (12+11) within base::BEGIN@3 which was called:
# once (12µs+11µs) by Socket6::BEGIN@215 at line 3 # spent 23µs making 1 call to base::BEGIN@3
# spent 11µs making 1 call to strict::import |
| 4 | 2 | 704µs | 2 | 41µs | # spent 24µs (6+17) within base::BEGIN@4 which was called:
# once (6µs+17µs) by Socket6::BEGIN@215 at line 4 # spent 24µs making 1 call to base::BEGIN@4
# spent 17µs making 1 call to vars::import |
| 5 | 1 | 600ns | $VERSION = '2.18'; | ||
| 6 | 1 | 11µs | $VERSION = eval $VERSION; # spent 2µs 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 | 1 | 600ns | my $Fattr = \%fields::attr; | ||
| 17 | |||||
| 18 | # spent 5µs within base::has_fields which was called 2 times, avg 3µs/call:
# 2 times (5µs+0s) by base::import at line 100, avg 3µs/call | ||||
| 19 | 2 | 900ns | my($base) = shift; | ||
| 20 | 2 | 2µs | my $fglob = ${"$base\::"}{FIELDS}; | ||
| 21 | 2 | 7µs | return( ($fglob && 'GLOB' eq ref($fglob) && *$fglob{HASH}) ? 1 : 0 ); | ||
| 22 | } | ||||
| 23 | |||||
| 24 | # spent 4µs within base::has_attr which was called 2 times, avg 2µs/call:
# 2 times (4µs+0s) by base::import at line 100, avg 2µs/call | ||||
| 25 | 2 | 500ns | my($proto) = shift; | ||
| 26 | 2 | 500ns | my($class) = ref $proto || $proto; | ||
| 27 | 2 | 5µs | return exists $Fattr->{$class}; | ||
| 28 | } | ||||
| 29 | |||||
| 30 | sub get_attr { | ||||
| 31 | $Fattr->{$_[0]} = [1] unless $Fattr->{$_[0]}; | ||||
| 32 | return $Fattr->{$_[0]}; | ||||
| 33 | } | ||||
| 34 | |||||
| 35 | 1 | 1µs | if ($] < 5.009) { | ||
| 36 | *get_fields = sub { | ||||
| 37 | # Shut up a possible typo warning. | ||||
| 38 | () = \%{$_[0].'::FIELDS'}; | ||||
| 39 | my $f = \%{$_[0].'::FIELDS'}; | ||||
| 40 | |||||
| 41 | # should be centralized in fields? perhaps | ||||
| 42 | # fields::mk_FIELDS_be_OK. Peh. As long as %{ $package . '::FIELDS' } | ||||
| 43 | # is used here anyway, it doesn't matter. | ||||
| 44 | bless $f, 'pseudohash' if (ref($f) ne 'pseudohash'); | ||||
| 45 | |||||
| 46 | return $f; | ||||
| 47 | } | ||||
| 48 | } | ||||
| 49 | else { | ||||
| 50 | *get_fields = sub { | ||||
| 51 | # Shut up a possible typo warning. | ||||
| 52 | () = \%{$_[0].'::FIELDS'}; | ||||
| 53 | return \%{$_[0].'::FIELDS'}; | ||||
| 54 | } | ||||
| 55 | 1 | 3µs | } | ||
| 56 | |||||
| 57 | # spent 101µs (88+13) within base::import which was called:
# once (88µs+13µs) by Socket6::BEGIN@215 at line 215 of Socket6.pm | ||||
| 58 | 1 | 500ns | my $class = shift; | ||
| 59 | |||||
| 60 | 1 | 300ns | return SUCCESS unless @_; | ||
| 61 | |||||
| 62 | # List of base classes from which we will inherit %FIELDS. | ||||
| 63 | 1 | 100ns | my $fields_base; | ||
| 64 | |||||
| 65 | 1 | 500ns | my $inheritor = caller(0); | ||
| 66 | |||||
| 67 | 1 | 100ns | my @bases; | ||
| 68 | 1 | 900ns | foreach my $base (@_) { | ||
| 69 | 2 | 500ns | if ( $inheritor eq $base ) { | ||
| 70 | warn "Class '$inheritor' tried to inherit from itself\n"; | ||||
| 71 | } | ||||
| 72 | |||||
| 73 | 2 | 21µs | 3 | 4µs | next if grep $_->isa($base), ($inheritor, @bases); # spent 4µs making 3 calls to UNIVERSAL::isa, avg 1µs/call |
| 74 | |||||
| 75 | # Following blocks help isolate $SIG{__DIE__} changes | ||||
| 76 | { | ||||
| 77 | 4 | 600ns | my $sigdie; | ||
| 78 | { | ||||
| 79 | 4 | 3µs | local $SIG{__DIE__}; | ||
| 80 | 2 | 28µs | eval "require $base"; # spent 2µs executing statements in string eval
# spent 2µs executing statements in string eval | ||
| 81 | # Only ignore "Can't locate" errors from our eval require. | ||||
| 82 | # Other fatal errors (syntax etc) must be reported. | ||||
| 83 | 2 | 300ns | die if $@ && $@ !~ /^Can't locate .*? at \(eval /; | ||
| 84 | 2 | 4µs | unless (%{"$base\::"}) { | ||
| 85 | require Carp; | ||||
| 86 | local $" = " "; | ||||
| 87 | Carp::croak(<<ERROR); | ||||
| 88 | Base class package "$base" is empty. | ||||
| 89 | (Perhaps you need to 'use' the module which defines that package first, | ||||
| 90 | or make that module available in \@INC (\@INC contains: @INC). | ||||
| 91 | ERROR | ||||
| 92 | } | ||||
| 93 | 2 | 5µs | $sigdie = $SIG{__DIE__} || undef; | ||
| 94 | } | ||||
| 95 | # Make sure a global $SIG{__DIE__} makes it out of the localization. | ||||
| 96 | 2 | 700ns | $SIG{__DIE__} = $sigdie if defined $sigdie; | ||
| 97 | } | ||||
| 98 | 2 | 1µs | push @bases, $base; | ||
| 99 | |||||
| 100 | 2 | 6µs | 4 | 9µs | if ( has_fields($base) || has_attr($base) ) { # spent 5µs making 2 calls to base::has_fields, avg 3µs/call
# spent 4µs making 2 calls to base::has_attr, avg 2µs/call |
| 101 | # No multiple fields inheritance *suck* | ||||
| 102 | if ($fields_base) { | ||||
| 103 | require Carp; | ||||
| 104 | Carp::croak("Can't multiply inherit fields"); | ||||
| 105 | } else { | ||||
| 106 | $fields_base = $base; | ||||
| 107 | } | ||||
| 108 | } | ||||
| 109 | } | ||||
| 110 | # Save this until the end so it's all or nothing if the above loop croaks. | ||||
| 111 | 1 | 7µs | push @{"$inheritor\::ISA"}, @bases; | ||
| 112 | |||||
| 113 | 1 | 4µs | if( defined $fields_base ) { | ||
| 114 | inherit_fields($inheritor, $fields_base); | ||||
| 115 | } | ||||
| 116 | } | ||||
| 117 | |||||
| 118 | sub inherit_fields { | ||||
| 119 | my($derived, $base) = @_; | ||||
| 120 | |||||
| 121 | return SUCCESS unless $base; | ||||
| 122 | |||||
| 123 | my $battr = get_attr($base); | ||||
| 124 | my $dattr = get_attr($derived); | ||||
| 125 | my $dfields = get_fields($derived); | ||||
| 126 | my $bfields = get_fields($base); | ||||
| 127 | |||||
| 128 | $dattr->[0] = @$battr; | ||||
| 129 | |||||
| 130 | if( keys %$dfields ) { | ||||
| 131 | warn <<"END"; | ||||
| 132 | $derived is inheriting from $base but already has its own fields! | ||||
| 133 | This will cause problems. Be sure you use base BEFORE declaring fields. | ||||
| 134 | END | ||||
| 135 | |||||
| 136 | } | ||||
| 137 | |||||
| 138 | # Iterate through the base's fields adding all the non-private | ||||
| 139 | # ones to the derived class. Hang on to the original attribute | ||||
| 140 | # (Public, Private, etc...) and add Inherited. | ||||
| 141 | # This is all too complicated to do efficiently with add_fields(). | ||||
| 142 | while (my($k,$v) = each %$bfields) { | ||||
| 143 | my $fno; | ||||
| 144 | if ($fno = $dfields->{$k} and $fno != $v) { | ||||
| 145 | require Carp; | ||||
| 146 | Carp::croak ("Inherited fields can't override existing fields"); | ||||
| 147 | } | ||||
| 148 | |||||
| 149 | if( $battr->[$v] & PRIVATE ) { | ||||
| 150 | $dattr->[$v] = PRIVATE | INHERITED; | ||||
| 151 | } | ||||
| 152 | else { | ||||
| 153 | $dattr->[$v] = INHERITED | $battr->[$v]; | ||||
| 154 | $dfields->{$k} = $v; | ||||
| 155 | } | ||||
| 156 | } | ||||
| 157 | |||||
| 158 | foreach my $idx (1..$#{$battr}) { | ||||
| 159 | next if defined $dattr->[$idx]; | ||||
| 160 | $dattr->[$idx] = $battr->[$idx] & INHERITED; | ||||
| 161 | } | ||||
| 162 | } | ||||
| 163 | |||||
| 164 | 1 | 4µs | 1; | ||
| 165 | |||||
| 166 | __END__ |