Profile of base.pm

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NYTProf Performance Profile «block view•line view•sub view»
For t/app_dpath.t
Run on Tue Jun 5 15:25:28 2012
Reported on Tue Jun 5 15:26:10 2012

Filename | /home/ss5/perl5/perlbrew/perls/perl-5.14.1/lib/5.14.1/base.pm
Statements | Executed 280 statements in 6.70ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
10 | 10 | 6 | 2.69ms | 3.10ms | base::::importbase::import
10 | 1 | 1 | 186µs | 186µs | base::::has_fieldsbase::has_fields
10 | 1 | 1 | 139µs | 139µs | base::::has_attrbase::has_attr
1 | 1 | 1 | 40µs | 91µs | base::::BEGIN@3base::BEGIN@3
1 | 1 | 1 | 30µs | 129µs | base::::BEGIN@4base::BEGIN@4
0 | 0 | 0 | 0s | 0s | base::::__ANON__[:48]base::__ANON__[:48]
0 | 0 | 0 | 0s | 0s | base::::__ANON__[:55]base::__ANON__[:55]
0 | 0 | 0 | 0s | 0s | base::::get_attrbase::get_attr
0 | 0 | 0 | 0s | 0s | base::::inherit_fieldsbase::inherit_fields

Call graph for these subroutines as a Graphviz dot language file.

Line | State ments | Time on line | Calls | Time in subs | Code
--- | --- | --- | --- | --- | ---
1 |  |  |  |  | package base;
2 |  |  |  |  |
3 | 2 | 98µs | 2 | 142µs | # spent 91µs (40+51) within base::BEGIN@3 which was called: # once (40µs+51µs) by JSON::BEGIN@6 at line 3 use strict 'vars'; # spent 91µs making 1 call to base::BEGIN@3 # spent 51µs making 1 call to strict::import
4 | 2 | 3.43ms | 2 | 228µs | # spent 129µs (30+99) within base::BEGIN@4 which was called: # once (30µs+99µs) by JSON::BEGIN@6 at line 4 use vars qw($VERSION); # spent 129µs making 1 call to base::BEGIN@4 # spent 99µs making 1 call to vars::import
5 | 1 | 3µs |  |  | $VERSION = '2.18';
6 | 1 | 58µs |  |  | $VERSION = eval $VERSION; # spent 10µs 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 | 4µs |  |  | my $Fattr = \%fields::attr;
18 |  |  |  |  |
19 |  |  |  |  | # spent 186µs within base::has_fields which was called 10 times, avg 19µs/call: # 10 times (186µs+0s) by base::import at line 101, avg 19µs/call sub has_fields {
20 | 10 | 38µs |  |  | my($base) = shift;
21 | 10 | 51µs |  |  | my $fglob = ${"$base\::"}{FIELDS};
22 | 10 | 136µs |  |  | return( ($fglob && 'GLOB' eq ref($fglob) && *$fglob{HASH}) ? 1 : 0 );
23 |  |  |  |  | }
24 |  |  |  |  |
25 |  |  |  |  | # spent 139µs within base::has_attr which was called 10 times, avg 14µs/call: # 10 times (139µs+0s) by base::import at line 101, avg 14µs/call sub has_attr {
26 | 10 | 30µs |  |  | my($proto) = shift;
27 | 10 | 21µs |  |  | my($class) = ref $proto || $proto;
28 | 10 | 113µs |  |  | return exists $Fattr->{$class};
29 |  |  |  |  | }
30 |  |  |  |  |
31 |  |  |  |  | sub get_attr {
32 |  |  |  |  | $Fattr->{$_[0]} = [1] unless $Fattr->{$_[0]};
33 |  |  |  |  | return $Fattr->{$_[0]};
34 |  |  |  |  | }
35 |  |  |  |  |
36 | 1 | 5µs |  |  | if ($] < 5.009) {
37 |  |  |  |  | *get_fields = sub {
38 |  |  |  |  | # Shut up a possible typo warning.
39 |  |  |  |  | () = \%{$_[0].'::FIELDS'};
40 |  |  |  |  | my $f = \%{$_[0].'::FIELDS'};
41 |  |  |  |  |
42 |  |  |  |  | # should be centralized in fields? perhaps
43 |  |  |  |  | # fields::mk_FIELDS_be_OK. Peh. As long as %{ $package . '::FIELDS' }
44 |  |  |  |  | # is used here anyway, it doesn't matter.
45 |  |  |  |  | bless $f, 'pseudohash' if (ref($f) ne 'pseudohash');
46 |  |  |  |  |
47 |  |  |  |  | return $f;
48 |  |  |  |  | }
49 |  |  |  |  | }
50 |  |  |  |  | else {
51 |  |  |  |  | *get_fields = sub {
52 |  |  |  |  | # Shut up a possible typo warning.
53 |  |  |  |  | () = \%{$_[0].'::FIELDS'};
54 |  |  |  |  | return \%{$_[0].'::FIELDS'};
55 |  |  |  |  | }
56 | 1 | 15µs |  |  | }
57 |  |  |  |  |
58 |  |  |  |  | # spent 3.10ms (2.69+408µs) within base::import which was called 10 times, avg 310µs/call: # once (402µs+71µs) by Test::Deep::SuperHash::BEGIN@60 at line 60 of Test/Deep/Hash.pm # once (353µs+48µs) by Test::Deep::SuperHashKeysOnly::BEGIN@100 at line 100 of Test/Deep/HashKeysOnly.pm # once (278µs+41µs) by JSON::BEGIN@6 at line 6 of JSON.pm # once (273µs+44µs) by Test::Deep::SuperHashElements::BEGIN@70 at line 70 of Test/Deep/HashElements.pm # once (266µs+41µs) by Test::Deep::SuperHashKeys::BEGIN@42 at line 42 of Test/Deep/HashKeys.pm # once (242µs+32µs) by Test::Deep::SubHash::BEGIN@83 at line 83 of Test/Deep/Hash.pm # once (226µs+40µs) by Config::General::BEGIN@38 at line 38 of Config/General.pm # once (229µs+30µs) by Test::Deep::SubHashElements::BEGIN@83 at line 83 of Test/Deep/HashElements.pm # once (214µs+31µs) by Test::Deep::SubHashKeysOnly::BEGIN@114 at line 114 of Test/Deep/HashKeysOnly.pm # once (206µs+30µs) by Test::Deep::SubHashKeys::BEGIN@56 at line 56 of Test/Deep/HashKeys.pm sub import {
59 | 10 | 31µs |  |  | my $class = shift;
60 |  |  |  |  |
61 | 10 | 18µs |  |  | return SUCCESS unless @_;
62 |  |  |  |  |
63 |  |  |  |  | # List of base classes from which we will inherit %FIELDS.
64 | 10 | 6µs |  |  | my $fields_base;
65 |  |  |  |  |
66 | 10 | 30µs |  |  | my $inheritor = caller(0);
67 |  |  |  |  |
68 | 10 | 11µs |  |  | my @bases;
69 | 10 | 48µs |  |  | foreach my $base (@_) {
70 | 10 | 12µs |  |  | if ( $inheritor eq $base ) {
71 |  |  |  |  | warn "Class '$inheritor' tried to inherit from itself\n";
72 |  |  |  |  | }
73 |  |  |  |  |
74 | 10 | 507µs | 10 | 84µs | next if grep $_->isa($base), ($inheritor, @bases); # spent 84µs making 10 calls to UNIVERSAL::isa, avg 8µs/call
75 |  |  |  |  |
76 |  |  |  |  | # Following blocks help isolate $SIG{__DIE__} changes
77 |  |  |  |  | {
78 | 20 | 25µs |  |  | my $sigdie;
79 |  |  |  |  | {
80 | 20 | 129µs |  |  | local $SIG{__DIE__};
81 | 10 | 758µs |  |  | eval "require $base"; # spent 23µs executing statements in 2 string evals (merged) # spent 19µs executing statements in 2 string evals (merged) # spent 19µs executing statements in 2 string evals (merged) # spent 18µs executing statements in 2 string evals (merged) # spent 17µs executing statements in 2 string evals (merged)
82 |  |  |  |  | # Only ignore "Can't locate" errors from our eval require.
83 |  |  |  |  | # Other fatal errors (syntax etc) must be reported.
84 | 10 | 10µs |  |  | die if $@ && $@ !~ /^Can't locate .*? at \(eval /;
85 | 10 | 104µs |  |  | unless (%{"$base\::"}) {
86 |  |  |  |  | require Carp;
87 |  |  |  |  | local $" = " ";
88 |  |  |  |  | Carp::croak(<<ERROR);
89 |  |  |  |  | Base class package "$base" is empty.
90 |  |  |  |  | (Perhaps you need to 'use' the module which defines that package first,
91 |  |  |  |  | or make that module available in \@INC (\@INC contains: @INC).
92 |  |  |  |  | ERROR
93 |  |  |  |  | }
94 | 10 | 157µs |  |  | $sigdie = $SIG{__DIE__} || undef;
95 |  |  |  |  | }
96 |  |  |  |  | # Make sure a global $SIG{__DIE__} makes it out of the localization.
97 | 10 | 17µs |  |  | $SIG{__DIE__} = $sigdie if defined $sigdie;
98 |  |  |  |  | }
99 | 10 | 37µs |  |  | push @bases, $base;
100 |  |  |  |  |
101 | 10 | 176µs | 20 | 325µs | if ( has_fields($base) || has_attr($base) ) { # spent 186µs making 10 calls to base::has_fields, avg 19µs/call # spent 139µs making 10 calls to base::has_attr, avg 14µs/call
102 |  |  |  |  | # No multiple fields inheritance *suck*
103 |  |  |  |  | if ($fields_base) {
104 |  |  |  |  | require Carp;
105 |  |  |  |  | Carp::croak("Can't multiply inherit fields");
106 |  |  |  |  | } else {
107 |  |  |  |  | $fields_base = $base;
108 |  |  |  |  | }
109 |  |  |  |  | }
110 |  |  |  |  | }
111 |  |  |  |  | # Save this until the end so it's all or nothing if the above loop croaks.
112 | 10 | 423µs |  |  | push @{"$inheritor\::ISA"}, @bases;
113 |  |  |  |  |
114 | 10 | 180µs |  |  | if( defined $fields_base ) {
115 |  |  |  |  | inherit_fields($inheritor, $fields_base);
116 |  |  |  |  | }
117 |  |  |  |  | }
118 |  |  |  |  |
119 |  |  |  |  |
120 |  |  |  |  | sub inherit_fields {
121 |  |  |  |  | my($derived, $base) = @_;
122 |  |  |  |  |
123 |  |  |  |  | return SUCCESS unless $base;
124 |  |  |  |  |
125 |  |  |  |  | my $battr = get_attr($base);
126 |  |  |  |  | my $dattr = get_attr($derived);
127 |  |  |  |  | my $dfields = get_fields($derived);
128 |  |  |  |  | my $bfields = get_fields($base);
129 |  |  |  |  |
130 |  |  |  |  | $dattr->[0] = @$battr;
131 |  |  |  |  |
132 |  |  |  |  | if( keys %$dfields ) {
133 |  |  |  |  | warn <<"END";
134 |  |  |  |  | $derived is inheriting from $base but already has its own fields!
135 |  |  |  |  | This will cause problems. Be sure you use base BEFORE declaring fields.
136 |  |  |  |  | END
137 |  |  |  |  |
138 |  |  |  |  | }
139 |  |  |  |  |
140 |  |  |  |  | # Iterate through the base's fields adding all the non-private
141 |  |  |  |  | # ones to the derived class. Hang on to the original attribute
142 |  |  |  |  | # (Public, Private, etc...) and add Inherited.
143 |  |  |  |  | # This is all too complicated to do efficiently with add_fields().
144 |  |  |  |  | while (my($k,$v) = each %$bfields) {
145 |  |  |  |  | my $fno;
146 |  |  |  |  | if ($fno = $dfields->{$k} and $fno != $v) {
147 |  |  |  |  | require Carp;
148 |  |  |  |  | Carp::croak ("Inherited fields can't override existing fields");
149 |  |  |  |  | }
150 |  |  |  |  |
151 |  |  |  |  | if( $battr->[$v] & PRIVATE ) {
152 |  |  |  |  | $dattr->[$v] = PRIVATE | INHERITED;
153 |  |  |  |  | }
154 |  |  |  |  | else {
155 |  |  |  |  | $dattr->[$v] = INHERITED | $battr->[$v];
156 |  |  |  |  | $dfields->{$k} = $v;
157 |  |  |  |  | }
158 |  |  |  |  | }
159 |  |  |  |  |
160 |  |  |  |  | foreach my $idx (1..$#{$battr}) {
161 |  |  |  |  | next if defined $dattr->[$idx];
162 |  |  |  |  | $dattr->[$idx] = $battr->[$idx] & INHERITED;
163 |  |  |  |  | }
164 |  |  |  |  | }
165 |  |  |  |  |
166 |  |  |  |  |
167 | 1 | 19µs |  |  | 1;
168 |  |  |  |  |
169 |  |  |  |  | __END__