Profile of /usr/local/lib/perl5/5.10.1/base.pm

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NYTProf Performance Profile «block view•line view•sub view»
For 01.HTTP.t
Run on Tue May 4 15:25:55 2010
Reported on Tue May 4 15:26:06 2010

File | /usr/local/lib/perl5/5.10.1/base.pm
Statements Executed | 1536
Statement Execution Time | 16.3ms

Subroutines — ordered by exclusive time
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
52 | 52 | 51 | 22.4ms | 33.9ms | base::::importbase::import
61 | 1 | 1 | 446µs | 446µs | base::::has_versionbase::has_version
61 | 1 | 1 | 192µs | 192µs | base::::has_fieldsbase::has_fields
61 | 1 | 1 | 145µs | 145µs | base::::has_attrbase::has_attr
1 | 1 | 1 | 19µs | 37µs | base::::BEGIN@3base::BEGIN@3
1 | 1 | 1 | 9µs | 46µs | base::::BEGIN@4base::BEGIN@4
0 | 0 | 0 | 0s | 0s | base::::__ANON__[:54]base::__ANON__[:54]
0 | 0 | 0 | 0s | 0s | base::::__ANON__[:61]base::__ANON__[:61]
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 | 3 | 27µs | 2 | 56µs | # spent 37µs (19+18) within base::BEGIN@3 which was called # once (19µs+18µs) by Class::MOP::Mixin::AttributeCore::BEGIN@12 at line 3 use strict 'vars'; # spent 37µs making 1 call to base::BEGIN@3 # spent 18µs making 1 call to strict::import
4 | 3 | 944µs | 2 | 82µs | # spent 46µs (9+36) within base::BEGIN@4 which was called # once (9µs+36µs) by Class::MOP::Mixin::AttributeCore::BEGIN@12 at line 4 use vars qw($VERSION); # spent 46µs making 1 call to base::BEGIN@4 # spent 36µs making 1 call to vars::import
5 | 1 | 700ns |  |  | $VERSION = '2.14';
6 | 1 | 22µs |  |  | $VERSION = eval $VERSION;
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 | 700ns |  |  | my $Fattr = \%fields::attr;
18 |  |  |  |  |
19 |  |  |  |  | # spent 192µs within base::has_fields which was called 61 times, avg 3µs/call: # 61 times (192µs+0s) by base::import at line 113, avg 3µs/call sub has_fields {
20 | 183 | 252µs |  |  | my($base) = shift;
21 |  |  |  |  | my $fglob = ${"$base\::"}{FIELDS};
22 |  |  |  |  | return( ($fglob && 'GLOB' eq ref($fglob) && *$fglob{HASH}) ? 1 : 0 );
23 |  |  |  |  | }
24 |  |  |  |  |
25 |  |  |  |  | # spent 446µs within base::has_version which was called 61 times, avg 7µs/call: # 61 times (446µs+0s) by base::import at line 83, avg 7µs/call sub has_version {
26 | 183 | 498µs |  |  | my($base) = shift;
27 |  |  |  |  | my $vglob = ${$base.'::'}{VERSION};
28 |  |  |  |  | return( ($vglob && *$vglob{SCALAR}) ? 1 : 0 );
29 |  |  |  |  | }
30 |  |  |  |  |
31 |  |  |  |  | # spent 145µs within base::has_attr which was called 61 times, avg 2µs/call: # 61 times (145µs+0s) by base::import at line 113, avg 2µs/call sub has_attr {
32 | 183 | 178µs |  |  | 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 | 1 | 1µs |  |  | 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 | 1 | 2µs |  |  | }
63 |  |  |  |  |
64 |  |  |  |  | # spent 33.9ms (22.4+11.5) within base::import which was called 52 times, avg 651µs/call: # once (12.0ms+2.33ms) by Class::MOP::Method::Wrapped::BEGIN@14 at line 14 of Class/MOP/Method/Wrapped.pm # once (510µs+4.46ms) by Moose::Meta::Attribute::BEGIN@20 at line 20 of Moose/Meta/Attribute.pm # once (2.04ms+1.50ms) by Sub::Name::BEGIN@50 at line 50 of Sub/Name.pm # once (693µs+2.33ms) by Class::MOP::Class::BEGIN@22 at line 22 of Class/MOP/Class.pm # once (884µs+1.74ms) by Class::MOP::Method::Accessor::BEGIN@14 at line 14 of Class/MOP/Method/Accessor.pm # once (968µs+110µs) by Moose::Meta::Method::Overridden::BEGIN@10 at line 10 of Moose/Meta/Method/Overridden.pm # once (824µs+231µs) by Class::MOP::Method::Constructor::BEGIN@14 at line 14 of Class/MOP/Method/Constructor.pm # once (738µs+93µs) by Class::MOP::Mixin::AttributeCore::BEGIN@12 at line 12 of Class/MOP/Mixin/AttributeCore.pm # once (309µs+76µs) by Class::MOP::Instance::BEGIN@13 at line 13 of Class/MOP/Instance.pm # once (69µs+24µs) by Moose::Meta::Role::Composite::BEGIN@13 at line 13 of Moose/Meta/Role/Composite.pm # once (57µs+29µs) by Exception::Class::Base::BEGIN@11 at line 11 of Exception/Class/Base.pm # once (31µs+50µs) by Moose::Meta::TypeConstraint::Parameterizable::BEGIN@11 at line 11 of Moose/Meta/TypeConstraint/Parameterizable.pm # once (53µs+24µs) by Moose::Meta::Method::Constructor::BEGIN@12 at line 12 of Moose/Meta/Method/Constructor.pm # once (65µs+10µs) by Moose::Meta::TypeCoercion::Union::BEGIN@14 at line 14 of Moose/Meta/TypeCoercion/Union.pm # once (46µs+25µs) by Moose::Meta::Method::Destructor::BEGIN@15 at line 15 of Moose/Meta/Method/Destructor.pm # once (46µs+23µs) by Class::MOP::Attribute::BEGIN@17 at line 17 of Class/MOP/Attribute.pm # once (46µs+23µs) by Moose::Meta::Role::BEGIN@23 at line 23 of Moose/Meta/Role.pm # once (45µs+23µs) by Moose::Meta::Method::Accessor::BEGIN@11 at line 11 of Moose/Meta/Method/Accessor.pm # once (43µs+24µs) by Moose::Meta::Method::Delegation::BEGIN@14 at line 14 of Moose/Meta/Method/Delegation.pm # once (46µs+18µs) by Moose::Meta::Instance::BEGIN@11 at line 11 of Moose/Meta/Instance.pm # once (45µs+13µs) by Moose::Meta::Role::Method::BEGIN@11 at line 11 of Moose/Meta/Role/Method.pm # once (39µs+16µs) by SimpleDB::Client::Exception::Response::BEGIN@3 at line 3 of (eval 0)[Exception/Class.pm:172] at line 172 of Exception/Class.pm # once (38µs+16µs) by SimpleDB::Client::Exception::BEGIN@3 at line 3 of (eval 0)[Exception/Class.pm:172] at line 172 of Exception/Class.pm # once (42µs+13µs) by Moose::Meta::TypeConstraint::Class::BEGIN@14 at line 14 of Moose/Meta/TypeConstraint/Class.pm # once (37µs+17µs) by Sub::Name::BEGIN@49 at line 49 of Sub/Name.pm # once (38µs+16µs) by SimpleDB::Client::Exception::Connection::BEGIN@3 at line 3 of (eval 0)[Exception/Class.pm:172] at line 172 of Exception/Class.pm # once (36µs+18µs) by Moose::Meta::TypeConstraint::BEGIN@14 at line 14 of Moose/Meta/TypeConstraint.pm # once (37µs+15µs) by Moose::Meta::Role::Attribute::BEGIN@13 at line 13 of Moose/Meta/Role/Attribute.pm # once (39µs+12µs) by Moose::Meta::Role::Application::ToRole::BEGIN@13 at line 13 of Moose/Meta/Role/Application/ToRole.pm # once (32µs+17µs) by Moose::Meta::Class::Immutable::Trait::BEGIN@12 at line 12 of Moose/Meta/Class/Immutable/Trait.pm # once (36µs+11µs) by Moose::Meta::TypeConstraint::DuckType::BEGIN@17 at line 17 of Moose/Meta/TypeConstraint/DuckType.pm # once (34µs+13µs) by Moose::Meta::Class::BEGIN@25 at line 25 of Moose/Meta/Class.pm # once (30µs+16µs) by Moose::Meta::TypeConstraint::Role::BEGIN@14 at line 14 of Moose/Meta/TypeConstraint/Role.pm # once (32µs+13µs) by Moose::Meta::Role::Application::ToClass::BEGIN@14 at line 14 of Moose/Meta/Role/Application/ToClass.pm # once (30µs+12µs) by Moose::Meta::Role::Application::ToInstance::BEGIN@13 at line 13 of Moose/Meta/Role/Application/ToInstance.pm # once (29µs+12µs) by Moose::Meta::TypeConstraint::Registry::BEGIN@14 at line 14 of Moose/Meta/TypeConstraint/Registry.pm # once (31µs+11µs) by Moose::Meta::Method::Augmented::BEGIN@10 at line 10 of Moose/Meta/Method/Augmented.pm # once (30µs+12µs) by Class::MOP::Mixin::HasMethods::BEGIN@14 at line 14 of Class/MOP/Mixin/HasMethods.pm # once (28µs+13µs) by Class::MOP::Mixin::HasAttributes::BEGIN@13 at line 13 of Class/MOP/Mixin/HasAttributes.pm # once (29µs+12µs) by Moose::Meta::TypeConstraint::Union::BEGIN@14 at line 14 of Moose/Meta/TypeConstraint/Union.pm # once (29µs+11µs) by Moose::Meta::Role::Method::Conflicting::BEGIN@9 at line 9 of Moose/Meta/Role/Method/Conflicting.pm # once (29µs+11µs) by Moose::Meta::Role::Application::RoleSummation::BEGIN@15 at line 15 of Moose/Meta/Role/Application/RoleSummation.pm # once (27µs+12µs) by Moose::Meta::Role::Method::Required::BEGIN@11 at line 11 of Moose/Meta/Role/Method/Required.pm # once (28µs+11µs) by Moose::Meta::TypeConstraint::Enum::BEGIN@13 at line 13 of Moose/Meta/TypeConstraint/Enum.pm # once (26µs+11µs) by Moose::Meta::TypeConstraint::Parameterized::BEGIN@15 at line 15 of Moose/Meta/TypeConstraint/Parameterized.pm # once (40µs+-40µs) by Class::MOP::Method::Inlined::BEGIN@13 at line 13 of Class/MOP/Method/Inlined.pm # once (62µs+-62µs) by Class::MOP::Method::BEGIN@14 at line 14 of Class/MOP/Method.pm # once (48µs+-48µs) by Class::MOP::Method::Generated::BEGIN@13 at line 13 of Class/MOP/Method/Generated.pm # once (71µs+-71µs) by Class::MOP::Package::BEGIN@14 at line 14 of Class/MOP/Package.pm # once (39µs+-39µs) by Moose::Meta::Method::BEGIN@10 at line 10 of Moose/Meta/Method.pm # once (35µs+-35µs) by Moose::Meta::Mixin::AttributeCore::BEGIN@9 at line 9 of Moose/Meta/Mixin/AttributeCore.pm # once (1.71ms+-1.71ms) by Class::MOP::Module::BEGIN@14 at line 14 of Class/MOP/Module.pm sub import {
65 | 974 | 2.42ms |  |  | 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 |  |  |  |  | if ( $inheritor eq $base ) {
78 |  |  |  |  | warn "Class '$inheritor' tried to inherit from itself\n";
79 |  |  |  |  | }
80 |  |  |  |  |
81 |  |  |  |  | next if grep $_->isa($base), ($inheritor, @bases); # spent 154µs making 70 calls to UNIVERSAL::isa, avg 2µs/call
82 |  |  |  |  |
83 |  |  |  |  | if (has_version($base)) { # spent 446µs making 61 calls to base::has_version, avg 7µs/call
84 |  |  |  |  | ${$base.'::VERSION'} = '-1, set by base.pm'
85 |  |  |  |  | unless defined ${$base.'::VERSION'};
86 |  |  |  |  | }
87 |  |  |  |  | else {
88 |  |  |  |  | my $sigdie;
89 |  |  |  |  | {
90 |  |  |  |  | local $SIG{__DIE__};
91 | 1 | 12.0ms |  |  | eval "require $base";
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, $base;
112 |  |  |  |  |
113 |  |  |  |  | if ( has_fields($base) || has_attr($base) ) { # spent 192µs making 61 calls to base::has_fields, avg 3µs/call # spent 145µs making 61 calls to base::has_attr, avg 2µs/call
114 |  |  |  |  | # No multiple fields inheritance *suck*
115 |  |  |  |  | if ($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 | 42µs |  |  | 1;
182 |  |  |  |  |
183 |  |  |  |  | __END__
184 |  |  |  |  |
185 |  |  |  |  | =head1 NAME
186 |  |  |  |  |
187 |  |  |  |  | base - Establish an ISA relationship with base classes at compile time
188 |  |  |  |  |
189 |  |  |  |  | =head1 SYNOPSIS
190 |  |  |  |  |
191 |  |  |  |  | package Baz;
192 |  |  |  |  | use base qw(Foo Bar);
193 |  |  |  |  |
194 |  |  |  |  | =head1 DESCRIPTION
195 |  |  |  |  |
196 |  |  |  |  | Unless you are using the C<fields> pragma, consider this module discouraged
197 |  |  |  |  | in favor of the lighter-weight C<parent>.
198 |  |  |  |  |
199 |  |  |  |  | Allows you to both load one or more modules, while setting up inheritance from
200 |  |  |  |  | those modules at the same time. Roughly similar in effect to
201 |  |  |  |  |
202 |  |  |  |  | package Baz;
203 |  |  |  |  | BEGIN {
204 |  |  |  |  | require Foo;
205 |  |  |  |  | require Bar;
206 |  |  |  |  | push @ISA, qw(Foo Bar);
207 |  |  |  |  | }
208 |  |  |  |  |
209 |  |  |  |  | C<base> employs some heuristics to determine if a module has already been
210 |  |  |  |  | loaded, if it has it doesn't try again. If C<base> tries to C<require> the
211 |  |  |  |  | module it will not die if it cannot find the module's file, but will die on any
212 |  |  |  |  | other error. After all this, should your base class be empty, containing no
213 |  |  |  |  | symbols, it will die. This is useful for inheriting from classes in the same
214 |  |  |  |  | file as yourself, like so:
215 |  |  |  |  |
216 |  |  |  |  | package Foo;
217 |  |  |  |  | sub exclaim { "I can have such a thing?!" }
218 |  |  |  |  |
219 |  |  |  |  | package Bar;
220 |  |  |  |  | use base "Foo";
221 |  |  |  |  |
222 |  |  |  |  | If $VERSION is not detected even after loading it, <base> will define $VERSION
223 |  |  |  |  | in the base package, setting it to the string C<-1, set by base.pm>.
224 |  |  |  |  |
225 |  |  |  |  | C<base> will also initialize the fields if one of the base classes has it.
226 |  |  |  |  | Multiple inheritance of fields is B<NOT> supported, if two or more base classes
227 |  |  |  |  | each have inheritable fields the 'base' pragma will croak. See L<fields>,
228 |  |  |  |  | L<public> and L<protected> for a description of this feature.
229 |  |  |  |  |
230 |  |  |  |  | The base class' C<import> method is B<not> called.
231 |  |  |  |  |
232 |  |  |  |  |
233 |  |  |  |  | =head1 DIAGNOSTICS
234 |  |  |  |  |
235 |  |  |  |  | =over 4
236 |  |  |  |  |
237 |  |  |  |  | =item Base class package "%s" is empty.
238 |  |  |  |  |
239 |  |  |  |  | base.pm was unable to require the base package, because it was not
240 |  |  |  |  | found in your path.
241 |  |  |  |  |
242 |  |  |  |  | =item Class 'Foo' tried to inherit from itself
243 |  |  |  |  |
244 |  |  |  |  | Attempting to inherit from yourself generates a warning.
245 |  |  |  |  |
246 |  |  |  |  | use Foo;
247 |  |  |  |  | use base 'Foo';
248 |  |  |  |  |
249 |  |  |  |  | =back
250 |  |  |  |  |
251 |  |  |  |  | =head1 HISTORY
252 |  |  |  |  |
253 |  |  |  |  | This module was introduced with Perl 5.004_04.
254 |  |  |  |  |
255 |  |  |  |  | =head1 CAVEATS
256 |  |  |  |  |
257 |  |  |  |  | Due to the limitations of the implementation, you must use
258 |  |  |  |  | base I<before> you declare any of your own fields.
259 |  |  |  |  |
260 |  |  |  |  |
261 |  |  |  |  | =head1 SEE ALSO
262 |  |  |  |  |
263 |  |  |  |  | L<fields>
264 |  |  |  |  |
265 |  |  |  |  | =cut