Profile of vars.pm

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For examples/benchmark4.pl
Run on Thu Aug 28 19:01:43 2014
Reported on Thu Aug 28 19:02:42 2014

Filename | /usr/share/perl/5.18/vars.pm
Statements | Executed 184 statements in 982µs

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
9 | 9 | 8 | 335µs | 411µs | vars::::importvars::import
1 | 1 | 1 | 199µs | 264µs | vars::::BEGIN@7vars::BEGIN@7
105 | 3 | 1 | 76µs | 76µs | vars::::CORE:matchvars::CORE:match (opcode)
1 | 1 | 1 | 15µs | 15µs | vars::::BEGIN@3vars::BEGIN@3
1 | 1 | 1 | 6µs | 16µs | 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 | 51µs | 1 | 15µs | # spent 15µs within vars::BEGIN@3 which was called: # once (15µs+0s) by Config::BEGIN@11 at line 3 use 5.006; # spent 15µs making 1 call to vars::BEGIN@3
4 |  |  |  |  |
5 | 1 | 600ns |  |  | our $VERSION = '1.03';
6 |  |  |  |  |
7 | 2 | 219µs | 2 | 328µs | # spent 264µs (199+65) within vars::BEGIN@7 which was called: # once (199µs+65µs) by Config::BEGIN@11 at line 7 use warnings::register; # spent 264µs making 1 call to vars::BEGIN@7 # spent 65µs making 1 call to warnings::register::import
8 | 2 | 279µs | 2 | 26µs | # spent 16µs (6+10) within vars::BEGIN@8 which was called: # once (6µs+10µs) by Config::BEGIN@11 at line 8 use strict qw(vars subs); # spent 16µs making 1 call to vars::BEGIN@8 # spent 10µs making 1 call to strict::import
9 |  |  |  |  |
10 |  |  |  |  | # spent 411µs (335+76) within vars::import which was called 9 times, avg 46µs/call: # once (58µs+13µs) by NetAddr::IP::Lite::BEGIN@33 at line 33 of NetAddr/IP/Lite.pm # once (52µs+12µs) by Socket6::BEGIN@39 at line 39 of Socket6.pm # once (51µs+12µs) by NetAddr::IP::BEGIN@25 at line 25 of NetAddr/IP.pm # once (48µs+10µs) by NetAddr::IP::InetBase::BEGIN@8 at line 8 of NetAddr/IP/InetBase.pm # once (44µs+10µs) by NetAddr::IP::Util::BEGIN@8 at line 8 of NetAddr/IP/Util.pm # once (26µs+6µs) by Config::BEGIN@11 at line 11 of Config.pm # once (26µs+6µs) by NetAddr::IP::InetBase::BEGIN@125 at line 125 of NetAddr/IP/InetBase.pm # once (16µs+3µs) by NetAddr::IP::Util_IS::BEGIN@8 at line 8 of NetAddr/IP/Util_IS.pm # once (14µs+3µs) by base::BEGIN@4 at line 4 of base.pm sub import {
11 | 9 | 6µs |  |  | my $callpack = caller;
12 | 9 | 17µs |  |  | my (undef, @imports) = @_;
13 | 9 | 2µs |  |  | my ($sym, $ch);
14 | 9 | 38µs |  |  | foreach (@imports) {
15 | 35 | 158µs | 35 | 52µs | if (($ch, $sym) = /^([\$\@\%\*\&])(.+)/) { # spent 52µs making 35 calls to vars::CORE:match, avg 1µs/call
16 | 35 | 52µs | 35 | 13µs | if ($sym =~ /\W/) { # spent 13µs making 35 calls to vars::CORE:match, avg 380ns/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 | 35 | 61µs | 35 | 10µs | $sym = "${callpack}::$sym" unless $sym =~ /::/; # spent 10µs making 35 calls to vars::CORE:match, avg 297ns/call
29 |  |  |  |  | *$sym =
30 |  |  |  |  | ( $ch eq "\$" ? \$$sym
31 |  |  |  |  | : $ch eq "\@" ? \@$sym
32 |  |  |  |  | : $ch eq "\%" ? \%$sym
33 |  |  |  |  | : $ch eq "\*" ? \*$sym
34 |  |  |  |  | : $ch eq "\&" ? \&$sym
35 | 35 | 94µs |  |  | : 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 | 2µs |  |  | 1;
47 |  |  |  |  | __END__
|  |  |  |  | # spent 76µs within vars::CORE:match which was called 105 times, avg 720ns/call: # 35 times (52µs+0s) by vars::import at line 15, avg 1µs/call # 35 times (13µs+0s) by vars::import at line 16, avg 380ns/call # 35 times (10µs+0s) by vars::import at line 28, avg 297ns/call sub vars::CORE:match; # opcode