Profile of aliased.pm

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NYTProf Performance Profile «block view•line view•sub view»
For bin/dpath
Run on Tue Jun 5 15:31:33 2012
Reported on Tue Jun 5 15:31:41 2012

Filename | /home/ss5/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/aliased.pm
Statements | Executed 104 statements in 3.17ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
5 | 1 | 1 | 931µs | 354ms | aliased::::_load_aliasaliased::_load_alias (recurses: max depth 1, inclusive time 2.13ms)
5 | 1 | 1 | 338µs | 502µs | aliased::::_make_aliasaliased::_make_alias
5 | 5 | 2 | 202µs | 355ms | aliased::::importaliased::import (recurses: max depth 1, inclusive time 2.39ms)
5 | 1 | 1 | 98µs | 164µs | aliased::::_get_aliasaliased::_get_alias
5 | 1 | 1 | 67µs | 67µs | aliased::::CORE:substaliased::CORE:subst (opcode)
1 | 1 | 1 | 56µs | 72µs | aliased::::BEGIN@8aliased::BEGIN@8
1 | 1 | 1 | 30µs | 86µs | aliased::::BEGIN@35aliased::BEGIN@35
0 | 0 | 0 | 0s | 0s | aliased::::__ANON__[:36]aliased::__ANON__[:36]
0 | 0 | 0 | 0s | 0s | aliased::::aliasaliased::alias

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

Line | State ments | Time on line | Calls | Time in subs | Code
--- | --- | --- | --- | --- | ---
1 |  |  |  |  | package aliased;
2 | 1 | 2µs |  |  | $VERSION = '0.30';
3 |  |  |  |  |
4 | 1 | 2µs |  |  | require Exporter;
5 | 1 | 26µs |  |  | @ISA = qw(Exporter);
6 | 1 | 3µs |  |  | @EXPORT = qw(alias);
7 |  |  |  |  |
8 | 2 | 696µs | 2 | 89µs | # spent 72µs (56+16) within aliased::BEGIN@8 which was called: # once (56µs+16µs) by Data::DPath::Path::BEGIN@14 at line 8 use strict; # spent 72µs making 1 call to aliased::BEGIN@8 # spent 16µs making 1 call to strict::import
9 |  |  |  |  |
10 |  |  |  |  | # spent 355ms (202µs+355) within aliased::import which was called 5 times, avg 70.9ms/call: # once (39µs+339ms) by Data::DPath::Path::BEGIN@16 at line 16 of Data/DPath/Path.pm # once (47µs+13.3ms) by Data::DPath::Path::BEGIN@14 at line 14 of Data/DPath/Path.pm # once (36µs+2.42ms) by Data::DPath::Path::BEGIN@15 at line 15 of Data/DPath/Path.pm # once (49µs+-49µs) by Data::DPath::Context::BEGIN@14 at line 14 of Data/DPath/Context.pm # once (31µs+-31µs) by Data::DPath::Context::BEGIN@15 at line 15 of Data/DPath/Context.pm sub import {
11 | 25 | 194µs |  |  | my ( $class, $package, $alias, @import ) = @_;
12 |  |  |  |  |
13 |  |  |  |  | if ( @_ <= 1 ) {
14 |  |  |  |  | $class->export_to_level(1);
15 |  |  |  |  | return;
16 |  |  |  |  | }
17 |  |  |  |  |
18 |  |  |  |  | my $callpack = caller(0);
19 |  |  |  |  |
20 |  |  | 5 | 354ms | _load_alias( $package, $callpack, @import ); # spent 356ms making 5 calls to aliased::_load_alias, avg 71.3ms/call, recursion: max depth 1, sum of overlapping time 2.13ms
21 |  |  | 5 | 502µs | _make_alias( $package, $callpack, $alias ); # spent 502µs making 5 calls to aliased::_make_alias, avg 100µs/call
22 |  |  |  |  | }
23 |  |  |  |  |
24 |  |  |  |  | # spent 164µs (98+67) within aliased::_get_alias which was called 5 times, avg 33µs/call: # 5 times (98µs+67µs) by aliased::_make_alias at line 33, avg 33µs/call sub _get_alias {
25 | 15 | 183µs |  |  | my $package = shift;
26 |  |  | 5 | 67µs | $package =~ s/.*(?:::|')//; # spent 67µs making 5 calls to aliased::CORE:subst, avg 13µs/call
27 |  |  |  |  | return $package;
28 |  |  |  |  | }
29 |  |  |  |  |
30 |  |  |  |  | # spent 502µs (338+164) within aliased::_make_alias which was called 5 times, avg 100µs/call: # 5 times (338µs+164µs) by aliased::import at line 21, avg 100µs/call sub _make_alias {
31 | 15 | 325µs |  |  | my ( $package, $callpack, $alias ) = @_;
32 |  |  |  |  |
33 |  |  | 5 | 164µs | $alias ||= _get_alias($package); # spent 164µs making 5 calls to aliased::_get_alias, avg 33µs/call
34 |  |  |  |  |
35 | 2 | 815µs | 2 | 143µs | # spent 86µs (30+56) within aliased::BEGIN@35 which was called: # once (30µs+56µs) by Data::DPath::Path::BEGIN@14 at line 35 no strict 'refs'; # spent 86µs making 1 call to aliased::BEGIN@35 # spent 56µs making 1 call to strict::unimport
36 |  |  |  |  | *{ join q{::} => $callpack, $alias } = sub () { $package };
37 |  |  |  |  | }
38 |  |  |  |  |
39 |  |  |  |  | # spent 354ms (931µs+353) within aliased::_load_alias which was called 5 times, avg 70.9ms/call: # 5 times (931µs+353ms) by aliased::import at line 20, avg 70.9ms/call sub _load_alias {
40 | 20 | 100µs |  |  | my ( $package, $callpack, @import ) = @_;
41 |  |  |  |  |
42 |  |  |  |  | # We don't localize $SIG{__DIE__} here because we need to be careful about
43 |  |  |  |  | # restoring its value if there is a failure. Very, very tricky.
44 |  |  |  |  | my $sigdie = $SIG{__DIE__};
45 |  |  |  |  | {
46 | 20 | 803µs |  |  | my $code =
47 |  |  |  |  | @import == 0
48 |  |  |  |  | ? "package $callpack; use $package;"
49 |  |  |  |  | : "package $callpack; use $package (\@import)";
50 |  |  |  |  | eval $code; # spent 442µs executing statements in string eval # includes 12.8ms spent executing 1 call to 1 sub defined therein. # spent 436µs executing statements in string eval # includes 1.06ms spent executing 1 call to 1 sub defined therein. # spent 399µs executing statements in string eval # includes 962µs spent executing 1 call to 1 sub defined therein. # spent 368µs executing statements in string eval # includes 869µs spent executing 1 call to 1 sub defined therein. # spent 46µs executing statements in string eval # includes 39µs spent executing 1 call to 1 sub defined therein.
51 |  |  |  |  | if ( my $error = $@ ) {
52 |  |  |  |  | $SIG{__DIE__} = $sigdie;
53 |  |  |  |  | die $error;
54 |  |  |  |  | }
55 |  |  |  |  | $sigdie = $SIG{__DIE__}
56 |  |  |  |  | if defined $SIG{__DIE__};
57 |  |  |  |  | }
58 |  |  |  |  |
59 |  |  |  |  | # Make sure a global $SIG{__DIE__} makes it out of the localization.
60 |  |  |  |  | $SIG{__DIE__} = $sigdie if defined $sigdie;
61 |  |  |  |  | }
62 |  |  |  |  |
63 |  |  |  |  | sub alias {
64 |  |  |  |  | my ( $package, @import ) = @_;
65 |  |  |  |  |
66 |  |  |  |  | my $callpack = scalar caller(0);
67 |  |  |  |  | _load_alias( $package, $callpack, @import );
68 |  |  |  |  |
69 |  |  |  |  | return $package;
70 |  |  |  |  | }
71 |  |  |  |  |
72 | 1 | 18µs |  |  | 1;
73 |  |  |  |  | __END__
|  |  |  |  | # spent 67µs within aliased::CORE:subst which was called 5 times, avg 13µs/call: # 5 times (67µs+0s) by aliased::_get_alias at line 26, avg 13µs/call sub aliased::CORE:subst; # opcode