Profile of Exporter.pm

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For -e
Run on Thu Jun 30 16:34:56 2016
Reported on Thu Jun 30 16:35:08 2016

Filename | /home/s1/perl5/perlbrew/perls/perl-5.22.1/lib/5.22.1/Exporter.pm
Statements | Executed 397 statements in 2.25ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
29 | 29 | 20 | 2.00ms | 2.15ms | Exporter::::importExporter::import
886 | 1 | 1 | 98µs | 98µs | Exporter::::CORE:substExporter::CORE:subst (opcode)
112 | 2 | 1 | 54µs | 54µs | Exporter::::CORE:matchExporter::CORE:match (opcode)
0 | 0 | 0 | 0s | 0s | Exporter::::__ANON__[:64]Exporter::__ANON__[:64]
0 | 0 | 0 | 0s | 0s | Exporter::::as_heavyExporter::as_heavy
0 | 0 | 0 | 0s | 0s | Exporter::::exportExporter::export
0 | 0 | 0 | 0s | 0s | Exporter::::export_failExporter::export_fail
0 | 0 | 0 | 0s | 0s | Exporter::::export_ok_tagsExporter::export_ok_tags
0 | 0 | 0 | 0s | 0s | Exporter::::export_tagsExporter::export_tags
0 | 0 | 0 | 0s | 0s | Exporter::::export_to_levelExporter::export_to_level
0 | 0 | 0 | 0s | 0s | Exporter::::require_versionExporter::require_version

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

Line | State ments | Time on line | Calls | Time in subs | Code
--- | --- | --- | --- | --- | ---
1 |  |  |  |  | package Exporter;
2 |  |  |  |  |
3 | 1 | 10µs |  |  | require 5.006;
4 |  |  |  |  |
5 |  |  |  |  | # Be lean.
6 |  |  |  |  | #use strict;
7 |  |  |  |  | #no strict 'refs';
8 |  |  |  |  |
9 | 1 | 500ns |  |  | our $Debug = 0;
10 | 1 | 100ns |  |  | our $ExportLevel = 0;
11 | 1 | 300ns |  |  | our $Verbose ||= 0;
12 | 1 | 300ns |  |  | our $VERSION = '5.72';
13 |  |  |  |  | our (%Cache);
14 |  |  |  |  |
15 |  |  |  |  | sub as_heavy {
16 |  |  |  |  | require Exporter::Heavy;
17 |  |  |  |  | # Unfortunately, this does not work if the caller is aliased as *name = \&foo
18 |  |  |  |  | # Thus the need to create a lot of identical subroutines
19 |  |  |  |  | my $c = (caller(1))[3];
20 |  |  |  |  | $c =~ s/.*:://;
21 |  |  |  |  | \&{"Exporter::Heavy::heavy_$c"};
22 |  |  |  |  | }
23 |  |  |  |  |
24 |  |  |  |  | sub export {
25 |  |  |  |  | goto &{as_heavy()};
26 |  |  |  |  | }
27 |  |  |  |  |
28 |  |  |  |  | # spent 2.15ms (2.00+152µs) within Exporter::import which was called 29 times, avg 74µs/call: # once (804µs+73µs) by POSIX::import at line 30 of POSIX.pm # once (299µs+25µs) by POSIX::BEGIN@11 at line 11 of POSIX.pm # once (66µs+7µs) by experimental::BEGIN@8 at line 8 of experimental.pm # once (60µs+4µs) by Params::Validate::BEGIN@12 at line 12 of Params/Validate.pm # once (53µs+4µs) by DateTime::Duration::BEGIN@11 at line 11 of DateTime/Duration.pm # once (51µs+4µs) by DateTime::Format::Alami::EN::BEGIN@14 at line 14 of lib/DateTime/Format/Alami/EN.pm # once (43µs+5µs) by DateTime::Locale::FromData::BEGIN@6 at line 6 of DateTime/Locale/FromData.pm # once (43µs+3µs) by Try::Tiny::BEGIN@13 at line 13 of Try/Tiny.pm # once (43µs+2µs) by Module::Implementation::BEGIN@9 at line 9 of Module/Implementation.pm # once (42µs+3µs) by DateTime::BEGIN@16 at line 17 of DateTime.pm # once (42µs+2µs) by Tie::Hash::BEGIN@190 at line 190 of Tie/Hash.pm # once (41µs+2µs) by DateTime::BEGIN@11 at line 11 of DateTime.pm # once (38µs+4µs) by DateTime::Format::Alami::EN::BEGIN@91 at line 91 of lib/DateTime/Format/Alami/EN.pm # once (38µs+2µs) by DateTime::TimeZone::BEGIN@15 at line 15 of DateTime/TimeZone.pm # once (39µs+0s) by Params::Validate::BEGIN@10 at line 10 of Params/Validate.pm # once (34µs+2µs) by DateTime::TimeZone::OlsonDB::Change::BEGIN@6 at line 6 of DateTime/TimeZone/OlsonDB/Change.pm # once (34µs+2µs) by Params::Validate::XS::BEGIN@8 at line 8 of Params/Validate/XS.pm # once (31µs+1µs) by DateTime::TimeZone::OffsetOnly::BEGIN@9 at line 9 of DateTime/TimeZone/OffsetOnly.pm # once (30µs+2µs) by DateTime::TimeZone::Local::BEGIN@9 at line 9 of DateTime/TimeZone/Local.pm # once (26µs+1µs) by DateTime::Locale::BEGIN@13 at line 13 of DateTime/Locale.pm # once (27µs+1µs) by DateTime::TimeZone::BEGIN@16 at line 16 of DateTime/TimeZone.pm # once (25µs+1µs) by DateTime::BEGIN@19 at line 19 of DateTime.pm # once (23µs+1µs) by DateTime::Locale::BEGIN@12 at line 12 of DateTime/Locale.pm # once (20µs+1µs) by DateTime::Locale::FromData::BEGIN@7 at line 7 of DateTime/Locale/FromData.pm # once (12µs+0s) by Parse::Number::EN::BEGIN@12 at line 12 of Parse/Number/EN.pm # once (11µs+0s) by Role::Tiny::With::BEGIN@11 at line 11 of Role/Tiny/With.pm # once (11µs+0s) by DateTime::Locale::Util::BEGIN@6 at line 6 of DateTime/Locale/Util.pm # once (10µs+0s) by Data::Graph::Util::BEGIN@10 at line 10 of Data/Graph/Util.pm # once (8µs+0s) by Try::Tiny::BEGIN@10 at line 10 of Try/Tiny.pm sub import {
29 | 29 | 13µs |  |  | my $pkg = shift;
30 | 29 | 21µs |  |  | my $callpkg = caller($ExportLevel);
31 |  |  |  |  |
32 | 29 | 18µs |  |  | if ($pkg eq "Exporter" and @_ and $_[0] eq "import") {
33 | 5 | 21µs |  |  | *{$callpkg."::import"} = \&import;
34 | 5 | 25µs |  |  | return;
35 |  |  |  |  | }
36 |  |  |  |  |
37 |  |  |  |  | # We *need* to treat @{"$pkg\::EXPORT_FAIL"} since Carp uses it :-(
38 | 24 | 45µs |  |  | my $exports = \@{"$pkg\::EXPORT"};
39 |  |  |  |  | # But, avoid creating things if they don't exist, which saves a couple of
40 |  |  |  |  | # hundred bytes per package processed.
41 | 24 | 29µs |  |  | my $fail = ${$pkg . '::'}{EXPORT_FAIL} && \@{"$pkg\::EXPORT_FAIL"};
42 | 24 | 12µs |  |  | return export $pkg, $callpkg, @_
43 |  |  |  |  | if $Verbose or $Debug or $fail && @$fail > 1;
44 | 24 | 27µs |  |  | my $export_cache = ($Cache{$pkg} ||= {});
45 | 24 | 24µs |  |  | my $args = @_ or @_ = @$exports;
46 |  |  |  |  |
47 | 24 | 10µs |  |  | if ($args and not %$export_cache) {
48 |  |  |  |  | s/^&//, $export_cache->{$_} = 1
49 | 6 | 1.13ms | 886 | 98µs | foreach (@$exports, @{"$pkg\::EXPORT_OK"}); # spent 98µs making 886 calls to Exporter::CORE:subst, avg 111ns/call
50 |  |  |  |  | }
51 | 24 | 3µs |  |  | my $heavy;
52 |  |  |  |  | # Try very hard not to use {} and hence have to enter scope on the foreach
53 |  |  |  |  | # We bomb out of the loop with last as soon as heavy is set.
54 | 24 | 10µs |  |  | if ($args or $fail) {
55 |  |  |  |  | ($heavy = (/\W/ or $args and not exists $export_cache->{$_}
56 |  |  |  |  | or $fail and @$fail and $_ eq $fail->[0])) and last
57 | 17 | 219µs | 87 | 39µs | foreach (@_); # spent 39µs making 87 calls to Exporter::CORE:match, avg 453ns/call
58 |  |  |  |  | } else {
59 |  |  |  |  | ($heavy = /\W/) and last
60 | 7 | 66µs | 25 | 14µs | foreach (@_); # spent 14µs making 25 calls to Exporter::CORE:match, avg 564ns/call
61 |  |  |  |  | }
62 | 24 | 4µs |  |  | return export $pkg, $callpkg, ($args ? @_ : ()) if $heavy;
63 |  |  |  |  | local $SIG{__WARN__} =
64 | 24 | 133µs |  |  | sub {require Carp; &Carp::carp} if not $SIG{__WARN__};
65 |  |  |  |  | # shortcut for the common case of no type character
66 | 24 | 424µs |  |  | *{"$callpkg\::$_"} = \&{"$pkg\::$_"} foreach @_;
67 |  |  |  |  | }
68 |  |  |  |  |
69 |  |  |  |  | # Default methods
70 |  |  |  |  |
71 |  |  |  |  | sub export_fail {
72 |  |  |  |  | my $self = shift;
73 |  |  |  |  | @_;
74 |  |  |  |  | }
75 |  |  |  |  |
76 |  |  |  |  | # Unfortunately, caller(1)[3] "does not work" if the caller is aliased as
77 |  |  |  |  | # *name = \&foo. Thus the need to create a lot of identical subroutines
78 |  |  |  |  | # Otherwise we could have aliased them to export().
79 |  |  |  |  |
80 |  |  |  |  | sub export_to_level {
81 |  |  |  |  | goto &{as_heavy()};
82 |  |  |  |  | }
83 |  |  |  |  |
84 |  |  |  |  | sub export_tags {
85 |  |  |  |  | goto &{as_heavy()};
86 |  |  |  |  | }
87 |  |  |  |  |
88 |  |  |  |  | sub export_ok_tags {
89 |  |  |  |  | goto &{as_heavy()};
90 |  |  |  |  | }
91 |  |  |  |  |
92 |  |  |  |  | sub require_version {
93 |  |  |  |  | goto &{as_heavy()};
94 |  |  |  |  | }
95 |  |  |  |  |
96 | 1 | 5µs |  |  | 1;
97 |  |  |  |  | __END__
|  |  |  |  | # spent 54µs within Exporter::CORE:match which was called 112 times, avg 478ns/call: # 87 times (39µs+0s) by Exporter::import at line 57, avg 453ns/call # 25 times (14µs+0s) by Exporter::import at line 60, avg 564ns/call sub Exporter::CORE:match; # opcode
|  |  |  |  | # spent 98µs within Exporter::CORE:subst which was called 886 times, avg 111ns/call: # 886 times (98µs+0s) by Exporter::import at line 49, avg 111ns/call sub Exporter::CORE:subst; # opcode