Profile of base.pm

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For -e
Run on Thu Jun 30 16:16:00 2016
Reported on Thu Jun 30 16:16:08 2016

Filename | /home/s1/perl5/perlbrew/perls/perl-5.22.1/lib/site_perl/5.22.1/base.pm
Statements | Executed 113 statements in 1.81ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
3 | 3 | 1 | 137µs | 245µs | base::::import base::import
3 | 1 | 1 | 76µs | 85µs | base::::__ANON__[:72] base::__ANON__[:72]
1 | 1 | 1 | 30µs | 30µs | DateTime::Infinite::::BEGIN@1DateTime::Infinite::BEGIN@1
1 | 1 | 1 | 9µs | 25µs | base::::BEGIN@4 base::BEGIN@4
1 | 1 | 1 | 9µs | 37µs | base::::BEGIN@5 base::BEGIN@5
3 | 1 | 1 | 9µs | 9µs | base::::has_fields base::has_fields
3 | 1 | 1 | 6µs | 6µs | base::::has_attr base::has_attr
3 | 1 | 1 | 6µs | 6µs | base::::CORE:subst base::CORE:subst (opcode)
3 | 1 | 1 | 1µs | 1µs | base::::CORE:match base::CORE:match (opcode)
0 | 0 | 0 | 0s | 0s | base::::__ANON__[:49] base::__ANON__[:49]
0 | 0 | 0 | 0s | 0s | base::::__ANON__[:56] base::__ANON__[:56]
0 | 0 | 0 | 0s | 0s | base::::__ANON__[:64] base::__ANON__[:64]
0 | 0 | 0 | 0s | 0s | base::::get_attr base::get_attr
0 | 0 | 0 | 0s | 0s | base::::inherit_fields base::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 | 2 | 68µs | 1 | 30µs | # spent 30µs within DateTime::Infinite::BEGIN@1 which was called: # once (30µs+0s) by DateTime::Infinite::BEGIN@11 at line 1 use 5.008; # spent 30µs making 1 call to DateTime::Infinite::BEGIN@1
2 |  |  |  |  | package base;
3 |  |  |  |  |
4 | 2 | 32µs | 2 | 40µs | # spent 25µs (9+15) within base::BEGIN@4 which was called: # once (9µs+15µs) by DateTime::Infinite::BEGIN@11 at line 4 use strict 'vars'; # spent 25µs making 1 call to base::BEGIN@4 # spent 15µs making 1 call to strict::import
5 | 2 | 1.44ms | 2 | 65µs | # spent 37µs (9+28) within base::BEGIN@5 which was called: # once (9µs+28µs) by DateTime::Infinite::BEGIN@11 at line 5 use vars qw($VERSION); # spent 37µs making 1 call to base::BEGIN@5 # spent 28µs making 1 call to vars::import
6 | 1 | 800ns |  |  | $VERSION = '2.23';
7 | 1 | 2µs |  |  | $VERSION =~ tr/_//d;
8 |  |  |  |  |
9 |  |  |  |  | # constant.pm is slow
10 |  |  |  |  | sub SUCCESS () { 1 }
11 |  |  |  |  |
12 |  |  |  |  | sub PUBLIC () { 2**0 }
13 |  |  |  |  | sub PRIVATE () { 2**1 }
14 |  |  |  |  | sub INHERITED () { 2**2 }
15 |  |  |  |  | sub PROTECTED () { 2**3 }
16 |  |  |  |  |
17 |  |  |  |  |
18 | 1 | 800ns |  |  | my $Fattr = \%fields::attr;
19 |  |  |  |  |
20 |  |  |  |  | # spent 9µs within base::has_fields which was called 3 times, avg 3µs/call: # 3 times (9µs+0s) by base::import at line 127, avg 3µs/call sub has_fields {
21 | 3 | 1µs |  |  | my($base) = shift;
22 | 3 | 3µs |  |  | my $fglob = ${"$base\::"}{FIELDS};
23 | 3 | 8µs |  |  | return( ($fglob && 'GLOB' eq ref($fglob) && *$fglob{HASH}) ? 1 : 0 );
24 |  |  |  |  | }
25 |  |  |  |  |
26 |  |  |  |  | # spent 6µs within base::has_attr which was called 3 times, avg 2µs/call: # 3 times (6µs+0s) by base::import at line 127, avg 2µs/call sub has_attr {
27 | 3 | 1µs |  |  | my($proto) = shift;
28 | 3 | 1µs |  |  | my($class) = ref $proto || $proto;
29 | 3 | 8µs |  |  | return exists $Fattr->{$class};
30 |  |  |  |  | }
31 |  |  |  |  |
32 |  |  |  |  | sub get_attr {
33 |  |  |  |  | $Fattr->{$_[0]} = [1] unless $Fattr->{$_[0]};
34 |  |  |  |  | return $Fattr->{$_[0]};
35 |  |  |  |  | }
36 |  |  |  |  |
37 | 1 | 2µs |  |  | if ($] < 5.009) {
38 |  |  |  |  | *get_fields = sub {
39 |  |  |  |  | # Shut up a possible typo warning.
40 |  |  |  |  | () = \%{$_[0].'::FIELDS'};
41 |  |  |  |  | my $f = \%{$_[0].'::FIELDS'};
42 |  |  |  |  |
43 |  |  |  |  | # should be centralized in fields? perhaps
44 |  |  |  |  | # fields::mk_FIELDS_be_OK. Peh. As long as %{ $package . '::FIELDS' }
45 |  |  |  |  | # is used here anyway, it doesn't matter.
46 |  |  |  |  | bless $f, 'pseudohash' if (ref($f) ne 'pseudohash');
47 |  |  |  |  |
48 |  |  |  |  | return $f;
49 |  |  |  |  | }
50 |  |  |  |  | }
51 |  |  |  |  | else {
52 |  |  |  |  | *get_fields = sub {
53 |  |  |  |  | # Shut up a possible typo warning.
54 |  |  |  |  | () = \%{$_[0].'::FIELDS'};
55 |  |  |  |  | return \%{$_[0].'::FIELDS'};
56 |  |  |  |  | }
57 | 1 | 4µs |  |  | }
58 |  |  |  |  |
59 | 1 | 500ns |  |  | if ($] < 5.008) {
60 |  |  |  |  | *_module_to_filename = sub {
61 |  |  |  |  | (my $fn = $_[0]) =~ s!::!/!g;
62 |  |  |  |  | $fn .= '.pm';
63 |  |  |  |  | return $fn;
64 |  |  |  |  | }
65 |  |  |  |  | }
66 |  |  |  |  | else {
67 |  |  |  |  | # spent 85µs (76+9) within base::__ANON__[/home/s1/perl5/perlbrew/perls/perl-5.22.1/lib/site_perl/5.22.1/base.pm:72] which was called 3 times, avg 28µs/call: # 3 times (76µs+9µs) by base::import at line 99, avg 28µs/call *_module_to_filename = sub {
68 | 3 | 66µs | 3 | 6µs | (my $fn = $_[0]) =~ s!::!/!g; # spent 6µs making 3 calls to base::CORE:subst, avg 2µs/call
69 | 3 | 2µs |  |  | $fn .= '.pm';
70 | 3 | 12µs | 3 | 3µs | utf8::encode($fn); # spent 3µs making 3 calls to utf8::encode, avg 967ns/call
71 | 3 | 10µs |  |  | return $fn;
72 |  |  |  |  | }
73 | 1 | 1µs |  |  | }
74 |  |  |  |  |
75 |  |  |  |  |
76 |  |  |  |  | # spent 245µs (137+108) within base::import which was called 3 times, avg 82µs/call: # once (58µs+73µs) by DateTime::Infinite::BEGIN@11 at line 11 of DateTime/Infinite.pm # once (40µs+18µs) by DateTime::Infinite::Future::BEGIN@75 at line 75 of DateTime/Infinite.pm # once (39µs+17µs) by DateTime::Infinite::Past::BEGIN@100 at line 100 of DateTime/Infinite.pm sub import {
77 | 3 | 1µs |  |  | my $class = shift;
78 |  |  |  |  |
79 | 3 | 1µs |  |  | return SUCCESS unless @_;
80 |  |  |  |  |
81 |  |  |  |  | # List of base classes from which we will inherit %FIELDS.
82 | 3 | 400ns |  |  | my $fields_base;
83 |  |  |  |  |
84 | 3 | 2µs |  |  | my $inheritor = caller(0);
85 |  |  |  |  |
86 | 3 | 600ns |  |  | my @bases;
87 | 3 | 3µs |  |  | foreach my $base (@_) {
88 | 3 | 900ns |  |  | if ( $inheritor eq $base ) {
89 |  |  |  |  | warn "Class '$inheritor' tried to inherit from itself\n";
90 |  |  |  |  | }
91 |  |  |  |  |
92 | 3 | 34µs | 3 | 7µs | next if grep $_->isa($base), ($inheritor, @bases); # spent 7µs making 3 calls to UNIVERSAL::isa, avg 2µs/call
93 |  |  |  |  |
94 |  |  |  |  | # Following blocks help isolate $SIG{__DIE__} changes
95 |  |  |  |  | {
96 | 6 | 1µs |  |  | my $sigdie;
97 |  |  |  |  | {
98 | 6 | 7µs |  |  | local $SIG{__DIE__};
99 | 3 | 4µs | 3 | 85µs | my $fn = _module_to_filename($base); # spent 85µs making 3 calls to base::__ANON__[base.pm:72], avg 28µs/call
100 | 6 | 4µs |  |  | eval { require $fn };
101 |  |  |  |  | # Only ignore "Can't locate" errors from our eval require.
102 |  |  |  |  | # Other fatal errors (syntax etc) must be reported.
103 |  |  |  |  | #
104 |  |  |  |  | # changing the check here is fragile - if the check
105 |  |  |  |  | # here isn't catching every error you want, you should
106 |  |  |  |  | # probably be using parent.pm, which doesn't try to
107 |  |  |  |  | # guess whether require is needed or failed,
108 |  |  |  |  | # see [perl #118561]
109 | 3 | 9µs | 3 | 1µs | die if $@ && $@ !~ /^Can't locate \Q$fn\E .*? at .* line [0-9]+(?:, <[^>]*> (?:line|chunk) [0-9]+)?\.\n\z/s # spent 1µs making 3 calls to base::CORE:match, avg 333ns/call
110 |  |  |  |  | || $@ =~ /Compilation failed in require at .* line [0-9]+(?:, <[^>]*> (?:line|chunk) [0-9]+)?\.\n\z/;
111 | 3 | 9µs |  |  | unless (%{"$base\::"}) {
112 |  |  |  |  | require Carp;
113 |  |  |  |  | local $" = " ";
114 |  |  |  |  | Carp::croak(<<ERROR);
115 |  |  |  |  | Base class package "$base" is empty.
116 |  |  |  |  | (Perhaps you need to 'use' the module which defines that package first,
117 |  |  |  |  | or make that module available in \@INC (\@INC contains: @INC).
118 |  |  |  |  | ERROR
119 |  |  |  |  | }
120 | 3 | 10µs |  |  | $sigdie = $SIG{__DIE__} || undef;
121 |  |  |  |  | }
122 |  |  |  |  | # Make sure a global $SIG{__DIE__} makes it out of the localization.
123 | 3 | 1µs |  |  | $SIG{__DIE__} = $sigdie if defined $sigdie;
124 |  |  |  |  | }
125 | 3 | 2µs |  |  | push @bases, $base;
126 |  |  |  |  |
127 | 3 | 9µs | 6 | 15µs | if ( has_fields($base) || has_attr($base) ) { # spent 9µs making 3 calls to base::has_fields, avg 3µs/call # spent 6µs making 3 calls to base::has_attr, avg 2µs/call
128 |  |  |  |  | # No multiple fields inheritance *suck*
129 |  |  |  |  | if ($fields_base) {
130 |  |  |  |  | require Carp;
131 |  |  |  |  | Carp::croak("Can't multiply inherit fields");
132 |  |  |  |  | } else {
133 |  |  |  |  | $fields_base = $base;
134 |  |  |  |  | }
135 |  |  |  |  | }
136 |  |  |  |  | }
137 |  |  |  |  | # Save this until the end so it's all or nothing if the above loop croaks.
138 | 3 | 28µs |  |  | push @{"$inheritor\::ISA"}, @bases;
139 |  |  |  |  |
140 | 3 | 12µs |  |  | if( defined $fields_base ) {
141 |  |  |  |  | inherit_fields($inheritor, $fields_base);
142 |  |  |  |  | }
143 |  |  |  |  | }
144 |  |  |  |  |
145 |  |  |  |  |
146 |  |  |  |  | sub inherit_fields {
147 |  |  |  |  | my($derived, $base) = @_;
148 |  |  |  |  |
149 |  |  |  |  | return SUCCESS unless $base;
150 |  |  |  |  |
151 |  |  |  |  | my $battr = get_attr($base);
152 |  |  |  |  | my $dattr = get_attr($derived);
153 |  |  |  |  | my $dfields = get_fields($derived);
154 |  |  |  |  | my $bfields = get_fields($base);
155 |  |  |  |  |
156 |  |  |  |  | $dattr->[0] = @$battr;
157 |  |  |  |  |
158 |  |  |  |  | if( keys %$dfields ) {
159 |  |  |  |  | warn <<"END";
160 |  |  |  |  | $derived is inheriting from $base but already has its own fields!
161 |  |  |  |  | This will cause problems. Be sure you use base BEFORE declaring fields.
162 |  |  |  |  | END
163 |  |  |  |  |
164 |  |  |  |  | }
165 |  |  |  |  |
166 |  |  |  |  | # Iterate through the base's fields adding all the non-private
167 |  |  |  |  | # ones to the derived class. Hang on to the original attribute
168 |  |  |  |  | # (Public, Private, etc...) and add Inherited.
169 |  |  |  |  | # This is all too complicated to do efficiently with add_fields().
170 |  |  |  |  | while (my($k,$v) = each %$bfields) {
171 |  |  |  |  | my $fno;
172 |  |  |  |  | if ($fno = $dfields->{$k} and $fno != $v) {
173 |  |  |  |  | require Carp;
174 |  |  |  |  | Carp::croak ("Inherited fields can't override existing fields");
175 |  |  |  |  | }
176 |  |  |  |  |
177 |  |  |  |  | if( $battr->[$v] & PRIVATE ) {
178 |  |  |  |  | $dattr->[$v] = PRIVATE | INHERITED;
179 |  |  |  |  | }
180 |  |  |  |  | else {
181 |  |  |  |  | $dattr->[$v] = INHERITED | $battr->[$v];
182 |  |  |  |  | $dfields->{$k} = $v;
183 |  |  |  |  | }
184 |  |  |  |  | }
185 |  |  |  |  |
186 |  |  |  |  | foreach my $idx (1..$#{$battr}) {
187 |  |  |  |  | next if defined $dattr->[$idx];
188 |  |  |  |  | $dattr->[$idx] = $battr->[$idx] & INHERITED;
189 |  |  |  |  | }
190 |  |  |  |  | }
191 |  |  |  |  |
192 |  |  |  |  |
193 | 1 | 6µs |  |  | 1;
194 |  |  |  |  |
195 |  |  |  |  | __END__
|  |  |  |  | # spent 1µs within base::CORE:match which was called 3 times, avg 333ns/call: # 3 times (1µs+0s) by base::import at line 109, avg 333ns/call sub base::CORE:match; # opcode
|  |  |  |  | # spent 6µs within base::CORE:subst which was called 3 times, avg 2µs/call: # 3 times (6µs+0s) by base::__ANON__[/home/s1/perl5/perlbrew/perls/perl-5.22.1/lib/site_perl/5.22.1/base.pm:72] at line 68, avg 2µs/call sub base::CORE:subst; # opcode