Profile of Exporter.pm

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NYTProf Performance Profile «line view»
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/Exporter.pm
Statements | Executed 770 statements in 3.21ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
49 | 49 | 31 | 2.64ms | 6.08ms | Exporter::::importExporter::import
5 | 3 | 1 | 1.54ms | 1.64ms | Exporter::::as_heavyExporter::as_heavy
291 | 2 | 1 | 120µs | 120µs | Exporter::::CORE:matchExporter::CORE:match (opcode)
249 | 2 | 1 | 65µs | 65µs | Exporter::::CORE:substExporter::CORE:subst (opcode)
3 | 2 | 2 | 18µs | 58µs | Exporter::::exportExporter::export
1 | 1 | 1 | 10µs | 1.60ms | Exporter::::export_to_levelExporter::export_to_level
1 | 1 | 1 | 8µs | 25µs | Exporter::::export_ok_tagsExporter::export_ok_tags
0 | 0 | 0 | 0s | 0s | Exporter::::__ANON__[:64]Exporter::__ANON__[:64]
0 | 0 | 0 | 0s | 0s | Exporter::::export_failExporter::export_fail
0 | 0 | 0 | 0s | 0s | Exporter::::export_tagsExporter::export_tags
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 | 11µs |  |  | 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 | 400ns |  |  | our $VERSION = '5.66';
13 | 1 | 400ns |  |  | our (%Cache);
14 |  |  |  |  |
15 |  |  |  |  | # spent 1.64ms (1.54+96µs) within Exporter::as_heavy which was called 5 times, avg 328µs/call: # 3 times (32µs+8µs) by Exporter::export at line 25, avg 13µs/call # once (1.50ms+84µs) by Exporter::export_to_level at line 81 # once (12µs+4µs) by Exporter::export_ok_tags at line 89 sub as_heavy {
16 | 5 | 79µs |  |  | 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 | 5 | 19µs |  |  | my $c = (caller(1))[3];
20 | 5 | 43µs | 5 | 21µs | $c =~ s/.*:://; # spent 21µs making 5 calls to Exporter::CORE:subst, avg 4µs/call
21 | 5 | 28µs |  |  | \&{"Exporter::Heavy::heavy_$c"};
22 |  |  |  |  | }
23 |  |  |  |  |
24 |  |  |  |  | # spent 58µs (18+40) within Exporter::export which was called 3 times, avg 19µs/call: # 2 times (13µs+30µs) by Exporter::import at line 62, avg 21µs/call # once (6µs+10µs) by Exporter::Heavy::heavy_export_to_level at line 214 of Exporter/Heavy.pm sub export {
25 | 3 | 24µs | 6 | 3.47ms | goto &{as_heavy()}; # spent 3.43ms making 3 calls to Exporter::Heavy::heavy_export, avg 1.14ms/call # spent 40µs making 3 calls to Exporter::as_heavy, avg 13µs/call
26 |  |  |  |  | }
27 |  |  |  |  |
28 |  |  |  |  | # spent 6.08ms (2.64+3.44) within Exporter::import which was called 49 times, avg 124µs/call: # once (225µs+3.10ms) by POSIX::import at line 30 of POSIX.pm # once (430µs+31µs) by POSIX::BEGIN@11 at line 11 of POSIX.pm # once (62µs+210µs) by Safe::BEGIN@46 at line 46 of Safe.pm # once (199µs+11µs) by main::BEGIN@7 at line 7 of t/optimization.t # once (94µs+5µs) by Data::DPath::Context::BEGIN@10 at line 10 of lib/Data/DPath/Context.pm # once (75µs+4µs) by Data::DPath::Context::BEGIN@13 at line 13 of lib/Data/DPath/Context.pm # once (70µs+5µs) by Data::DPath::Context::BEGIN@14 at line 34 of List/Util.pm # once (65µs+9µs) by Data::DPath::Path::BEGIN@11 at line 11 of lib/Data/DPath/Path.pm # once (67µs+6µs) by Test::Deep::BEGIN@5 at line 5 of Test/Deep.pm # once (68µs+4µs) by Test::Deep::Cache::Simple::BEGIN@7 at line 7 of Test/Deep/Cache/Simple.pm # once (69µs+3µs) by IO::Handle::BEGIN@264 at line 264 of IO/Handle.pm # once (50µs+3µs) by Opcode::BEGIN@11 at line 11 of Opcode.pm # once (46µs+2µs) by IO::Handle::BEGIN@263 at line 263 of IO/Handle.pm # once (44µs+1µs) by Test::Deep::Shallow::BEGIN@8 at line 8 of Test/Deep/Shallow.pm # once (42µs+2µs) by Tie::Hash::BEGIN@188 at line 188 of Tie/Hash.pm # once (42µs+2µs) by Sub::Install::BEGIN@6 at line 6 of Sub/Install.pm # once (42µs+2µs) by Data::Dumper::BEGIN@22 at line 22 of Data/Dumper.pm # once (42µs+2µs) by Text::Balanced::BEGIN@343 at line 343 of Text/Balanced.pm # once (40µs+2µs) by Data::DPath::Path::BEGIN@7 at line 7 of lib/Data/DPath/Path.pm # once (39µs+2µs) by Text::Balanced::BEGIN@885 at line 885 of Text/Balanced.pm # once (39µs+0s) by Test::Deep::BEGIN@12 at line 12 of Test/Deep.pm # once (37µs+2µs) by Class::XSAccessor::Heavy::BEGIN@7 at line 7 of Class/XSAccessor/Heavy.pm # once (37µs+2µs) by SelectSaver::BEGIN@38 at line 38 of SelectSaver.pm # once (36µs+2µs) by Safe::BEGIN@29 at line 29 of Safe.pm # once (34µs+2µs) by IO::BEGIN@6 at line 6 of IO.pm # once (34µs+2µs) by Safe::BEGIN@4 at line 4 of Safe.pm # once (34µs+2µs) by SelectSaver::BEGIN@39 at line 39 of SelectSaver.pm # once (33µs+1µs) by Test::Deep::Blessed::BEGIN@8 at line 8 of Test/Deep/Blessed.pm # once (32µs+1µs) by Devel::StackTrace::BEGIN@13 at line 13 of Devel/StackTrace.pm # once (31µs+1µs) by Class::XSAccessor::Array::BEGIN@5 at line 5 of Class/XSAccessor/Array.pm # once (30µs+1µs) by Data::OptList::BEGIN@10 at line 95 of Params/Util.pm # once (30µs+1µs) by Exception::Class::BEGIN@11 at line 11 of Exception/Class.pm # once (29µs+1µs) by Test::Deep::Cache::Simple::BEGIN@5 at line 5 of Test/Deep/Cache/Simple.pm # once (29µs+1µs) by Test::Deep::Ref::BEGIN@8 at line 8 of Test/Deep/Ref.pm # once (29µs+1µs) by Text::Balanced::BEGIN@9 at line 9 of Text/Balanced.pm # once (29µs+1µs) by Exception::Class::Base::BEGIN@11 at line 11 of Exception/Class/Base.pm # once (28µs+1µs) by Test::Deep::Stack::BEGIN@6 at line 6 of Test/Deep/Stack.pm # once (28µs+1µs) by Test::Deep::RefType::BEGIN@8 at line 8 of Test/Deep/RefType.pm # once (27µs+1µs) by Class::XSAccessor::BEGIN@5 at line 5 of Class/XSAccessor.pm # once (27µs+1µs) by Data::DPath::Context::BEGIN@7 at line 7 of lib/Data/DPath/Context.pm # once (26µs+900ns) by Data::DPath::Context::BEGIN@11 at line 11 of lib/Data/DPath/Context.pm # once (26µs+1µs) by Test::Deep::Cache::Simple::BEGIN@10 at line 19 of Test/Deep/Cache/Simple.pm # once (26µs+1µs) by Data::DPath::Filters::BEGIN@7 at line 7 of lib/Data/DPath/Filters.pm # once (25µs+1µs) by main::BEGIN@9 at line 9 of t/optimization.t # once (22µs+0s) by Test::Deep::Cmp::BEGIN@12 at line 12 of Test/Deep/Cmp.pm # once (21µs+0s) by SelfLoader::BEGIN@4 at line 4 of SelfLoader.pm # once (19µs+0s) by SelfLoader::BEGIN@42 at line 42 of SelfLoader.pm # once (16µs+0s) by Data::DPath::Filters::BEGIN@8 at line 8 of lib/Data/DPath/Filters.pm # once (15µs+0s) by Test::Deep::Stack::BEGIN@7 at line 7 of Test/Deep/Stack.pm sub import {
29 | 49 | 27µs |  |  | my $pkg = shift;
30 | 49 | 46µs |  |  | my $callpkg = caller($ExportLevel);
31 |  |  |  |  |
32 | 49 | 21µs |  |  | if ($pkg eq "Exporter" and @_ and $_[0] eq "import") {
33 |  |  |  |  | *{$callpkg."::import"} = \&import;
34 |  |  |  |  | return;
35 |  |  |  |  | }
36 |  |  |  |  |
37 |  |  |  |  | # We *need* to treat @{"$pkg\::EXPORT_FAIL"} since Carp uses it :-(
38 | 49 | 114µs |  |  | 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 | 49 | 97µs |  |  | my $fail = ${$pkg . '::'}{EXPORT_FAIL} && \@{"$pkg\::EXPORT_FAIL"};
42 | 49 | 33µs |  |  | return export $pkg, $callpkg, @_
43 |  |  |  |  | if $Verbose or $Debug or $fail && @$fail > 1;
44 | 49 | 46µs |  |  | my $export_cache = ($Cache{$pkg} ||= {});
45 | 49 | 103µs |  |  | my $args = @_ or @_ = @$exports;
46 |  |  |  |  |
47 | 49 | 22µs |  |  | if ($args and not %$export_cache) {
48 |  |  |  |  | s/^&//, $export_cache->{$_} = 1
49 | 7 | 540µs | 244 | 45µs | foreach (@$exports, @{"$pkg\::EXPORT_OK"}); # spent 45µs making 244 calls to Exporter::CORE:subst, avg 183ns/call
50 |  |  |  |  | }
51 | 49 | 9µs |  |  | my $heavy;
52 |  |  |  |  | # Try very hard not to use {} and hence have to enter scope on the foreach
53 |  |  |  |  | # We bomb out of the loop with last as soon as heavy is set.
54 | 49 | 32µs |  |  | if ($args or $fail) {
55 |  |  |  |  | ($heavy = (/\W/ or $args and not exists $export_cache->{$_}
56 |  |  |  |  | or $fail and @$fail and $_ eq $fail->[0])) and last
57 | 37 | 408µs | 100 | 67µs | foreach (@_); # spent 67µs making 100 calls to Exporter::CORE:match, avg 673ns/call
58 |  |  |  |  | } else {
59 |  |  |  |  | ($heavy = /\W/) and last
60 | 12 | 360µs | 191 | 53µs | foreach (@_); # spent 53µs making 191 calls to Exporter::CORE:match, avg 279ns/call
61 |  |  |  |  | }
62 | 49 | 50µs | 2 | 42µs | return export $pkg, $callpkg, ($args ? @_ : ()) if $heavy; # spent 42µs making 2 calls to Exporter::export, avg 21µs/call
63 |  |  |  |  | local $SIG{__WARN__} =
64 | 47 | 244µs |  |  | sub {require Carp; &Carp::carp} if not $SIG{__WARN__};
65 |  |  |  |  | # shortcut for the common case of no type character
66 | 47 | 827µs |  |  | *{"$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 |  |  |  |  | # spent 1.60ms (10µs+1.58) within Exporter::export_to_level which was called: # once (10µs+1.58ms) by Test::Builder::Module::import at line 93 of Test/Builder/Module.pm sub export_to_level {
81 | 1 | 14µs | 2 | 1.82ms | goto &{as_heavy()}; # spent 1.58ms making 1 call to Exporter::as_heavy # spent 231µs making 1 call to Exporter::Heavy::heavy_export_to_level
82 |  |  |  |  | }
83 |  |  |  |  |
84 |  |  |  |  | sub export_tags {
85 |  |  |  |  | goto &{as_heavy()};
86 |  |  |  |  | }
87 |  |  |  |  |
88 |  |  |  |  | # spent 25µs (8+16) within Exporter::export_ok_tags which was called: # once (8µs+16µs) by Data::DPath::Path::BEGIN@11 at line 31 of Text/Balanced.pm sub export_ok_tags {
89 | 1 | 9µs | 2 | 40µs | goto &{as_heavy()}; # spent 24µs making 1 call to Exporter::Heavy::heavy_export_ok_tags # spent 16µs making 1 call to Exporter::as_heavy
90 |  |  |  |  | }
91 |  |  |  |  |
92 |  |  |  |  | sub require_version {
93 |  |  |  |  | goto &{as_heavy()};
94 |  |  |  |  | }
95 |  |  |  |  |
96 | 1 | 5µs |  |  | 1;
97 |  |  |  |  | __END__
|  |  |  |  | # spent 120µs within Exporter::CORE:match which was called 291 times, avg 414ns/call: # 191 times (53µs+0s) by Exporter::import at line 60, avg 279ns/call # 100 times (67µs+0s) by Exporter::import at line 57, avg 673ns/call sub Exporter::CORE:match; # opcode
|  |  |  |  | # spent 65µs within Exporter::CORE:subst which was called 249 times, avg 262ns/call: # 244 times (45µs+0s) by Exporter::import at line 49, avg 183ns/call # 5 times (21µs+0s) by Exporter::as_heavy at line 20, avg 4µs/call sub Exporter::CORE:subst; # opcode