Profile of vars.pm

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For t/optimization.t
Run on Thu Jan 8 22:47:42 2015
Reported on Thu Jan 8 22:48:05 2015

Filename | /home/ss5/perl5/perlbrew/perls/tapper-perl/lib/5.16.3/vars.pm
Statements | Executed 144 statements in 1.03ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
11 | 11 | 11 | 358µs | 441µs | vars::::importvars::import
1 | 1 | 1 | 190µs | 279µs | vars::::BEGIN@7vars::BEGIN@7
69 | 3 | 1 | 82µs | 82µs | vars::::CORE:matchvars::CORE:match (opcode)
1 | 1 | 1 | 16µs | 16µs | vars::::BEGIN@3vars::BEGIN@3
1 | 1 | 1 | 9µs | 21µs | vars::::BEGIN@8vars::BEGIN@8

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

Line | State ments | Time on line | Calls | Time in subs | Code
--- | --- | --- | --- | --- | ---
1 |  |  |  |  | package vars;
2 |  |  |  |  |
3 | 2 | 62µs | 1 | 16µs | # spent 16µs within vars::BEGIN@3 which was called: # once (16µs+0s) by Config::BEGIN@11 at line 3 use 5.006; # spent 16µs making 1 call to vars::BEGIN@3
4 |  |  |  |  |
5 | 1 | 700ns |  |  | our $VERSION = '1.02';
6 |  |  |  |  |
7 | 2 | 209µs | 2 | 368µs | # spent 279µs (190+89) within vars::BEGIN@7 which was called: # once (190µs+89µs) by Config::BEGIN@11 at line 7 use warnings::register; # spent 279µs making 1 call to vars::BEGIN@7 # spent 89µs making 1 call to warnings::register::import
8 | 2 | 287µs | 2 | 34µs | # spent 21µs (9+13) within vars::BEGIN@8 which was called: # once (9µs+13µs) by Config::BEGIN@11 at line 8 use strict qw(vars subs); # spent 21µs making 1 call to vars::BEGIN@8 # spent 13µs making 1 call to strict::import
9 |  |  |  |  |
10 |  |  |  |  | # spent 441µs (358+82) within vars::import which was called 11 times, avg 40µs/call: # once (56µs+13µs) by List::MoreUtils::BEGIN@8 at line 8 of List/MoreUtils.pm # once (53µs+12µs) by Params::Util::BEGIN@65 at line 65 of Params/Util.pm # once (41µs+9µs) by Text::Balanced::BEGIN@11 at line 11 of Text/Balanced.pm # once (39µs+10µs) by Iterator::Util::BEGIN@21 at line 21 of Iterator/Util.pm # once (34µs+8µs) by constant::BEGIN@6 at line 6 of constant.pm # once (30µs+7µs) by File::Spec::BEGIN@4 at line 4 of File/Spec.pm # once (26µs+5µs) by Config::BEGIN@11 at line 11 of Config.pm # once (24µs+5µs) by SelfLoader::BEGIN@9 at line 9 of SelfLoader.pm # once (19µs+5µs) by base::BEGIN@4 at line 4 of base.pm # once (19µs+4µs) by Class::Data::Inheritable::BEGIN@4 at line 4 of Class/Data/Inheritable.pm # once (18µs+4µs) by File::Spec::Unix::BEGIN@4 at line 4 of File/Spec/Unix.pm sub import {
11 | 11 | 10µs |  |  | my $callpack = caller;
12 | 11 | 20µs |  |  | my (undef, @imports) = @_;
13 | 11 | 4µs |  |  | my ($sym, $ch);
14 | 11 | 60µs |  |  | foreach (@imports) {
15 | 23 | 171µs | 23 | 57µs | if (($ch, $sym) = /^([\$\@\%\*\&])(.+)/) { # spent 57µs making 23 calls to vars::CORE:match, avg 2µs/call
16 | 23 | 54µs | 23 | 14µs | if ($sym =~ /\W/) { # spent 14µs making 23 calls to vars::CORE:match, avg 630ns/call
17 |  |  |  |  | # time for a more-detailed check-up
18 |  |  |  |  | if ($sym =~ /^\w+[[{].*[]}]$/) {
19 |  |  |  |  | require Carp;
20 |  |  |  |  | Carp::croak("Can't declare individual elements of hash or array");
21 |  |  |  |  | } elsif (warnings::enabled() and length($sym) == 1 and $sym !~ tr/a-zA-Z//) {
22 |  |  |  |  | warnings::warn("No need to declare built-in vars");
23 |  |  |  |  | } elsif (($^H &= strict::bits('vars'))) {
24 |  |  |  |  | require Carp;
25 |  |  |  |  | Carp::croak("'$_' is not a valid variable name under strict vars");
26 |  |  |  |  | }
27 |  |  |  |  | }
28 | 23 | 60µs | 23 | 11µs | $sym = "${callpack}::$sym" unless $sym =~ /::/; # spent 11µs making 23 calls to vars::CORE:match, avg 478ns/call
29 |  |  |  |  | *$sym =
30 |  |  |  |  | ( $ch eq "\$" ? \$$sym
31 |  |  |  |  | : $ch eq "\@" ? \@$sym
32 |  |  |  |  | : $ch eq "\%" ? \%$sym
33 |  |  |  |  | : $ch eq "\*" ? \*$sym
34 |  |  |  |  | : $ch eq "\&" ? \&$sym
35 | 23 | 93µs |  |  | : do {
36 |  |  |  |  | require Carp;
37 |  |  |  |  | Carp::croak("'$_' is not a valid variable name");
38 |  |  |  |  | });
39 |  |  |  |  | } else {
40 |  |  |  |  | require Carp;
41 |  |  |  |  | Carp::croak("'$_' is not a valid variable name");
42 |  |  |  |  | }
43 |  |  |  |  | }
44 |  |  |  |  | };
45 |  |  |  |  |
46 | 1 | 3µs |  |  | 1;
47 |  |  |  |  | __END__
|  |  |  |  | # spent 82µs within vars::CORE:match which was called 69 times, avg 1µs/call: # 23 times (57µs+0s) by vars::import at line 15, avg 2µs/call # 23 times (14µs+0s) by vars::import at line 16, avg 630ns/call # 23 times (11µs+0s) by vars::import at line 28, avg 478ns/call sub vars::CORE:match; # opcode