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For 05.Domain_and_Item.t
  Run on Tue May 4 17:21:41 2010
Reported on Tue May 4 17:22:53 2010

File /usr/local/lib/perl5/5.10.1/AutoLoader.pm
Statements Executed 173
Statement Execution Time 3.71ms
Subroutines — ordered by exclusive time
Calls P F Exclusive
Time
Inclusive
Time
Subroutine
4431.29ms1.63msAutoLoader::::AUTOLOADAutoLoader::AUTOLOAD
5531.00ms1.12msAutoLoader::::importAutoLoader::import
411168µs342µsAutoLoader::::find_filenameAutoLoader::find_filename
722119µs119µsAutoLoader::::CORE:regcompAutoLoader::CORE:regcomp (opcode)
41271µs71µsAutoLoader::::CORE:ftereadAutoLoader::CORE:fteread (opcode)
164242µs42µsAutoLoader::::CORE:substAutoLoader::CORE:subst (opcode)
103235µs35µsAutoLoader::::CORE:matchAutoLoader::CORE:match (opcode)
142224µs24µsAutoLoader::::CORE:substcontAutoLoader::CORE:substcont (opcode)
11116µs16µsAutoLoader::::BEGIN@4AutoLoader::BEGIN@4
11116µs33µsAutoLoader::::BEGIN@30AutoLoader::BEGIN@30
11115µs18µsAutoLoader::::BEGIN@3AutoLoader::BEGIN@3
1118µs19µsAutoLoader::::BEGIN@138AutoLoader::BEGIN@138
1117µs7µsAutoLoader::::BEGIN@13AutoLoader::BEGIN@13
1117µs17µsAutoLoader::::BEGIN@186AutoLoader::BEGIN@186
0000s0sAutoLoader::::__ANON__[:31]AutoLoader::__ANON__[:31]
0000s0sAutoLoader::::unimportAutoLoader::unimport
Call graph for these subroutines as a Graphviz dot language file.
Line State
ments
Time
on line
Calls Time
in subs
Code
1package AutoLoader;
2
3322µs222µs
# spent 18µs (15+3) within AutoLoader::BEGIN@3 which was called # once (15µs+3µs) by base::import at line 3
use strict;
# spent 18µs making 1 call to AutoLoader::BEGIN@3 # spent 3µs making 1 call to strict::import
4396µs116µs
# spent 16µs within AutoLoader::BEGIN@4 which was called # once (16µs+0s) by base::import at line 4
use 5.006_001;
# spent 16µs making 1 call to AutoLoader::BEGIN@4
5
61300nsour($VERSION, $AUTOLOAD);
7
81100nsmy $is_dosish;
910smy $is_epoc;
1010smy $is_vms;
1110smy $is_macos;
12
13
# spent 7µs within AutoLoader::BEGIN@13 which was called # once (7µs+0s) by base::import at line 19
BEGIN {
1457µs $is_dosish = $^O eq 'dos' || $^O eq 'os2' || $^O eq 'MSWin32' || $^O eq 'NetWare';
15 $is_epoc = $^O eq 'epoc';
16 $is_vms = $^O eq 'VMS';
17 $is_macos = $^O eq 'MacOS';
18 $VERSION = '5.68';
19181µs17µs}
# spent 7µs making 1 call to AutoLoader::BEGIN@13
20
21
# spent 1.63ms (1.29+342µs) within AutoLoader::AUTOLOAD which was called 4 times, avg 408µs/call: # once (490µs+58µs) by POSIX::import at line 44 of POSIX.pm # once (350µs+117µs) by SimpleDB::Class::Cache::get at line 258 of ../lib/SimpleDB/Class/Cache.pm # once (221µs+116µs) by SimpleDB::Class::Cache::set at line 382 of ../lib/SimpleDB/Class/Cache.pm # once (230µs+51µs) by Storable::nfreeze at line 327 of Storable.pm
AUTOLOAD {
223292µs my $sub = $AUTOLOAD;
23 my $filename = AutoLoader::find_filename( $sub );
# spent 342µs making 4 calls to AutoLoader::find_filename, avg 86µs/call
24
25 my $save = $@;
26 local $!; # Do not munge the value.
2781.19ms eval { local $SIG{__DIE__}; require $filename };
28 if ($@) {
29 if (substr($sub,-9) eq '::DESTROY') {
303493µs250µs
# spent 33µs (16+17) within AutoLoader::BEGIN@30 which was called # once (16µs+17µs) by base::import at line 30
no strict 'refs';
# spent 33µs making 1 call to AutoLoader::BEGIN@30 # spent 17µs making 1 call to strict::unimport
31 *$sub = sub {};
32 $@ = undef;
33 } elsif ($@ =~ /^Can't locate/) {
34 # The load might just have failed because the filename was too
35 # long for some old SVR3 systems which treat long names as errors.
36 # If we can successfully truncate a long name then it's worth a go.
37 # There is a slight risk that we could pick up the wrong file here
38 # but autosplit should have warned about that when splitting.
39 if ($filename =~ s/(\w{12,})\.al$/substr($1,0,11).".al"/e){
40 eval { local $SIG{__DIE__}; require $filename };
41 }
42 }
43 if ($@){
44 $@ =~ s/ at .*\n//;
45 my $error = $@;
46 require Carp;
47 Carp::croak($error);
48 }
49 }
50 $@ = $save;
51 goto &$sub;
# spent 1.19ms making 1 call to Storable::thaw # spent 512µs making 1 call to POSIX::load_imports # spent 350µs making 1 call to Storable::nfreeze # spent 55µs making 1 call to Storable::_freeze
52}
53
54
# spent 342µs (168+174) within AutoLoader::find_filename which was called 4 times, avg 86µs/call: # 4 times (168µs+174µs) by AutoLoader::AUTOLOAD at line 23, avg 86µs/call
sub find_filename {
551631µs my $sub = shift;
56 my $filename;
57 # Braces used to preserve $1 et al.
58 {
59 # Try to find the autoloaded file from the package-qualified
60 # name of the sub. e.g., if the sub needed is
61 # Getopt::Long::GetOptions(), then $INC{Getopt/Long.pm} is
62 # something like '/usr/lib/perl5/Getopt/Long.pm', and the
63 # autoload file is '/usr/lib/perl5/auto/Getopt/Long/GetOptions.al'.
64 #
65 # However, if @INC is a relative path, this might not work. If,
66 # for example, @INC = ('lib'), then $INC{Getopt/Long.pm} is
67 # 'lib/Getopt/Long.pm', and we want to require
68 # 'auto/Getopt/Long/GetOptions.al' (without the leading 'lib').
69 # In this case, we simple prepend the 'auto/' and let the
70 # C<require> take care of the searching for us.
71
721674µs422µs my ($pkg,$func) = ($sub =~ /(.*)::([^:]+)$/);
# spent 22µs making 4 calls to AutoLoader::CORE:match, avg 6µs/call
73 $pkg =~ s#::#/#g;
# spent 3µs making 4 calls to AutoLoader::CORE:subst, avg 775ns/call
74896µs if (defined($filename = $INC{"$pkg.pm"})) {
754121µs if ($is_macos) {
76 $pkg =~ tr#/#:#;
77 $filename = undef
78 unless $filename =~ s#^(.*)$pkg\.pm\z#$1auto:$pkg:$func.al#s;
79 } else {
80 $filename = undef
# spent 44µs making 4 calls to AutoLoader::CORE:regcomp, avg 11µs/call # spent 13µs making 4 calls to AutoLoader::CORE:subst, avg 3µs/call # spent 12µs making 8 calls to AutoLoader::CORE:substcont, avg 2µs/call
81 unless $filename =~ s#^(.*)$pkg\.pm\z#$1auto/$pkg/$func.al#s;
82 }
83
84 # if the file exists, then make sure that it is a
85 # a fully anchored path (i.e either '/usr/lib/auto/foo/bar.al',
86 # or './lib/auto/foo/bar.al'. This avoids C<require> searching
87 # (and failing) to find the 'lib/auto/foo/bar.al' because it
88 # looked for 'lib/lib/auto/foo/bar.al', given @INC = ('lib').
89
90418µs471µs if (defined $filename and -r $filename) {
# spent 71µs making 4 calls to AutoLoader::CORE:fteread, avg 18µs/call
91 unless ($filename =~ m|^/|s) {
# spent 8µs making 4 calls to AutoLoader::CORE:match, avg 2µs/call
92 if ($is_dosish) {
93 unless ($filename =~ m{^([a-z]:)?[\\/]}is) {
94 if ($^O ne 'NetWare') {
95 $filename = "./$filename";
96 } else {
97 $filename = "$filename";
98 }
99 }
100 }
101 elsif ($is_epoc) {
102 unless ($filename =~ m{^([a-z?]:)?[\\/]}is) {
103 $filename = "./$filename";
104 }
105 }
106 elsif ($is_vms) {
107 # XXX todo by VMSmiths
108 $filename = "./$filename";
109 }
110 elsif (!$is_macos) {
111 $filename = "./$filename";
112 }
113 }
114 }
115 else {
116 $filename = undef;
117 }
118 }
119 unless (defined $filename) {
120 # let C<require> do the searching
121 $filename = "auto/$sub.al";
122 $filename =~ s#::#/#g;
123 }
124 }
125 return $filename;
126}
127
128
# spent 1.12ms (1.00+117µs) within AutoLoader::import which was called 5 times, avg 224µs/call: # once (577µs+32µs) by POSIX::BEGIN@9 at line 9 of POSIX.pm # once (214µs+23µs) by Storable::BEGIN@22 at line 22 of Storable.pm # once (179µs+54µs) by Compress::Raw::Zlib::BEGIN@6 at line 6 of Compress/Raw/Zlib.pm # once (23µs+5µs) by POSIX::SigAction::BEGIN@58 at line 58 of POSIX.pm # once (10µs+3µs) by POSIX::SigRt::BEGIN@62 at line 62 of POSIX.pm
sub import {
1293085µs my $pkg = shift;
130 my $callpkg = caller;
131
132 #
133 # Export symbols, but not by accident of inheritance.
134 #
135
136520µs if ($pkg eq 'AutoLoader') {
13726µs24µs if ( @_ and $_[0] =~ /^&?AUTOLOAD$/ ) {
# spent 4µs making 2 calls to AutoLoader::CORE:match, avg 2µs/call
1383189µs230µs
# spent 19µs (8+11) within AutoLoader::BEGIN@138 which was called # once (8µs+11µs) by base::import at line 138
no strict 'refs';
# spent 19µs making 1 call to AutoLoader::BEGIN@138 # spent 11µs making 1 call to strict::unimport
139 *{ $callpkg . '::AUTOLOAD' } = \&AUTOLOAD;
140 }
141 }
142
143 #
144 # Try to find the autosplit index file. Eg., if the call package
145 # is POSIX, then $INC{POSIX.pm} is something like
146 # '/usr/local/lib/perl5/POSIX.pm', and the autosplit index file is in
147 # '/usr/local/lib/perl5/auto/POSIX/autosplit.ix', so we require that.
148 #
149 # However, if @INC is a relative path, this might not work. If,
150 # for example, @INC = ('lib'), then
151 # $INC{POSIX.pm} is 'lib/POSIX.pm', and we want to require
152 # 'auto/POSIX/autosplit.ix' (without the leading 'lib').
153 #
154
155 (my $calldir = $callpkg) =~ s#::#/#g;
# spent 11µs making 5 calls to AutoLoader::CORE:subst, avg 2µs/call
156 my $path = $INC{$calldir . '.pm'};
1571518µs if (defined($path)) {
158 # Try absolute path name, but only eval it if the
159 # transformation from module path to autosplit.ix path
160 # succeeded!
161 my $replaced_okay;
1623161µs if ($is_macos) {
163 (my $malldir = $calldir) =~ tr#/#:#;
164 $replaced_okay = ($path =~ s#^(.*)$malldir\.pm\z#$1auto:$malldir:autosplit.ix#s);
165 } else {
166 $replaced_okay = ($path =~ s#^(.*)$calldir\.pm\z#$1auto/$calldir/autosplit.ix#);
# spent 75µs making 3 calls to AutoLoader::CORE:regcomp, avg 25µs/call # spent 15µs making 3 calls to AutoLoader::CORE:subst, avg 5µs/call # spent 12µs making 6 calls to AutoLoader::CORE:substcont, avg 2µs/call
167 }
168
1693829µs eval { require $path; } if $replaced_okay;
170 # If that failed, try relative path with normal @INC searching.
171 if (!$replaced_okay or $@) {
172 $path ="auto/$calldir/autosplit.ix";
173 eval { require $path; };
174 }
175 if ($@) {
176 my $error = $@;
177 require Carp;
178 Carp::carp($error);
179 }
180 }
181}
182
183sub unimport {
184 my $callpkg = caller;
185
186375µs228µs
# spent 17µs (7+10) within AutoLoader::BEGIN@186 which was called # once (7µs+10µs) by base::import at line 186
no strict 'refs';
# spent 17µs making 1 call to AutoLoader::BEGIN@186 # spent 10µs making 1 call to strict::unimport
187
188 for my $exported (qw( AUTOLOAD )) {
189 my $symname = $callpkg . '::' . $exported;
190 undef *{ $symname } if \&{ $symname } == \&{ $exported };
191 *{ $symname } = \&{ $symname };
192 }
193}
194
19515µs1;
196
197__END__
198
199=head1 NAME
200
201AutoLoader - load subroutines only on demand
202
203=head1 SYNOPSIS
204
205 package Foo;
206 use AutoLoader 'AUTOLOAD'; # import the default AUTOLOAD subroutine
207
208 package Bar;
209 use AutoLoader; # don't import AUTOLOAD, define our own
210 sub AUTOLOAD {
211 ...
212 $AutoLoader::AUTOLOAD = "...";
213 goto &AutoLoader::AUTOLOAD;
214 }
215
216=head1 DESCRIPTION
217
218The B<AutoLoader> module works with the B<AutoSplit> module and the
219C<__END__> token to defer the loading of some subroutines until they are
220used rather than loading them all at once.
221
222To use B<AutoLoader>, the author of a module has to place the
223definitions of subroutines to be autoloaded after an C<__END__> token.
224(See L<perldata>.) The B<AutoSplit> module can then be run manually to
225extract the definitions into individual files F<auto/funcname.al>.
226
227B<AutoLoader> implements an AUTOLOAD subroutine. When an undefined
228subroutine in is called in a client module of B<AutoLoader>,
229B<AutoLoader>'s AUTOLOAD subroutine attempts to locate the subroutine in a
230file with a name related to the location of the file from which the
231client module was read. As an example, if F<POSIX.pm> is located in
232F</usr/local/lib/perl5/POSIX.pm>, B<AutoLoader> will look for perl
233subroutines B<POSIX> in F</usr/local/lib/perl5/auto/POSIX/*.al>, where
234the C<.al> file has the same name as the subroutine, sans package. If
235such a file exists, AUTOLOAD will read and evaluate it,
236thus (presumably) defining the needed subroutine. AUTOLOAD will then
237C<goto> the newly defined subroutine.
238
239Once this process completes for a given function, it is defined, so
240future calls to the subroutine will bypass the AUTOLOAD mechanism.
241
242=head2 Subroutine Stubs
243
244In order for object method lookup and/or prototype checking to operate
245correctly even when methods have not yet been defined it is necessary to
246"forward declare" each subroutine (as in C<sub NAME;>). See
247L<perlsub/"SYNOPSIS">. Such forward declaration creates "subroutine
248stubs", which are place holders with no code.
249
250The AutoSplit and B<AutoLoader> modules automate the creation of forward
251declarations. The AutoSplit module creates an 'index' file containing
252forward declarations of all the AutoSplit subroutines. When the
253AutoLoader module is 'use'd it loads these declarations into its callers
254package.
255
256Because of this mechanism it is important that B<AutoLoader> is always
257C<use>d and not C<require>d.
258
259=head2 Using B<AutoLoader>'s AUTOLOAD Subroutine
260
261In order to use B<AutoLoader>'s AUTOLOAD subroutine you I<must>
262explicitly import it:
263
264 use AutoLoader 'AUTOLOAD';
265
266=head2 Overriding B<AutoLoader>'s AUTOLOAD Subroutine
267
268Some modules, mainly extensions, provide their own AUTOLOAD subroutines.
269They typically need to check for some special cases (such as constants)
270and then fallback to B<AutoLoader>'s AUTOLOAD for the rest.
271
272Such modules should I<not> import B<AutoLoader>'s AUTOLOAD subroutine.
273Instead, they should define their own AUTOLOAD subroutines along these
274lines:
275
276 use AutoLoader;
277 use Carp;
278
279 sub AUTOLOAD {
280 my $sub = $AUTOLOAD;
281 (my $constname = $sub) =~ s/.*:://;
282 my $val = constant($constname, @_ ? $_[0] : 0);
283 if ($! != 0) {
284 if ($! =~ /Invalid/ || $!{EINVAL}) {
285 $AutoLoader::AUTOLOAD = $sub;
286 goto &AutoLoader::AUTOLOAD;
287 }
288 else {
289 croak "Your vendor has not defined constant $constname";
290 }
291 }
292 *$sub = sub { $val }; # same as: eval "sub $sub { $val }";
293 goto &$sub;
294 }
295
296If any module's own AUTOLOAD subroutine has no need to fallback to the
297AutoLoader's AUTOLOAD subroutine (because it doesn't have any AutoSplit
298subroutines), then that module should not use B<AutoLoader> at all.
299
300=head2 Package Lexicals
301
302Package lexicals declared with C<my> in the main block of a package
303using B<AutoLoader> will not be visible to auto-loaded subroutines, due to
304the fact that the given scope ends at the C<__END__> marker. A module
305using such variables as package globals will not work properly under the
306B<AutoLoader>.
307
308The C<vars> pragma (see L<perlmod/"vars">) may be used in such
309situations as an alternative to explicitly qualifying all globals with
310the package namespace. Variables pre-declared with this pragma will be
311visible to any autoloaded routines (but will not be invisible outside
312the package, unfortunately).
313
314=head2 Not Using AutoLoader
315
316You can stop using AutoLoader by simply
317
318 no AutoLoader;
319
320=head2 B<AutoLoader> vs. B<SelfLoader>
321
322The B<AutoLoader> is similar in purpose to B<SelfLoader>: both delay the
323loading of subroutines.
324
325B<SelfLoader> uses the C<__DATA__> marker rather than C<__END__>.
326While this avoids the use of a hierarchy of disk files and the
327associated open/close for each routine loaded, B<SelfLoader> suffers a
328startup speed disadvantage in the one-time parsing of the lines after
329C<__DATA__>, after which routines are cached. B<SelfLoader> can also
330handle multiple packages in a file.
331
332B<AutoLoader> only reads code as it is requested, and in many cases
333should be faster, but requires a mechanism like B<AutoSplit> be used to
334create the individual files. L<ExtUtils::MakeMaker> will invoke
335B<AutoSplit> automatically if B<AutoLoader> is used in a module source
336file.
337
338=head1 CAVEATS
339
340AutoLoaders prior to Perl 5.002 had a slightly different interface. Any
341old modules which use B<AutoLoader> should be changed to the new calling
342style. Typically this just means changing a require to a use, adding
343the explicit C<'AUTOLOAD'> import if needed, and removing B<AutoLoader>
344from C<@ISA>.
345
346On systems with restrictions on file name length, the file corresponding
347to a subroutine may have a shorter name that the routine itself. This
348can lead to conflicting file names. The I<AutoSplit> package warns of
349these potential conflicts when used to split a module.
350
351AutoLoader may fail to find the autosplit files (or even find the wrong
352ones) in cases where C<@INC> contains relative paths, B<and> the program
353does C<chdir>.
354
355=head1 SEE ALSO
356
357L<SelfLoader> - an autoloader that doesn't use external files.
358
359=head1 AUTHOR
360
361C<AutoLoader> is maintained by the perl5-porters. Please direct
362any questions to the canonical mailing list. Anything that
363is applicable to the CPAN release can be sent to its maintainer,
364though.
365
366Author and Maintainer: The Perl5-Porters <perl5-porters@perl.org>
367
368Maintainer of the CPAN release: Steffen Mueller <smueller@cpan.org>
369
370=head1 COPYRIGHT AND LICENSE
371
372This package has been part of the perl core since the first release
373of perl5. It has been released separately to CPAN so older installations
374can benefit from bug fixes.
375
376This package has the same copyright and license as the perl core:
377
378 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
379 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
380 by Larry Wall and others
381
382 All rights reserved.
383
384 This program is free software; you can redistribute it and/or modify
385 it under the terms of either:
386
387 a) the GNU General Public License as published by the Free
388 Software Foundation; either version 1, or (at your option) any
389 later version, or
390
391 b) the "Artistic License" which comes with this Kit.
392
393 This program is distributed in the hope that it will be useful,
394 but WITHOUT ANY WARRANTY; without even the implied warranty of
395 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
396 the GNU General Public License or the Artistic License for more details.
397
398 You should have received a copy of the Artistic License with this
399 Kit, in the file named "Artistic". If not, I'll be glad to provide one.
400
401 You should also have received a copy of the GNU General Public License
402 along with this program in the file named "Copying". If not, write to the
403 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
404 02111-1307, USA or visit their web page on the internet at
405 http://www.gnu.org/copyleft/gpl.html.
406
407 For those of you that choose to use the GNU General Public License,
408 my interpretation of the GNU General Public License is that no Perl
409 script falls under the terms of the GPL unless you explicitly put
410 said script under the terms of the GPL yourself. Furthermore, any
411 object code linked with perl does not automatically fall under the
412 terms of the GPL, provided such object code only adds definitions
413 of subroutines and variables, and does not otherwise impair the
414 resulting interpreter from executing any standard Perl script. I
415 consider linking in C subroutines in this manner to be the moral
416 equivalent of defining subroutines in the Perl language itself. You
417 may sell such an object file as proprietary provided that you provide
418 or offer to provide the Perl source, as specified by the GNU General
419 Public License. (This is merely an alternate way of specifying input
420 to the program.) You may also sell a binary produced by the dumping of
421 a running Perl script that belongs to you, provided that you provide or
422 offer to provide the Perl source as specified by the GPL. (The
423 fact that a Perl interpreter and your code are in the same binary file
424 is, in this case, a form of mere aggregation.) This is my interpretation
425 of the GPL. If you still have concerns or difficulties understanding
426 my intent, feel free to contact me. Of course, the Artistic License
427 spells all this out for your protection, so you may prefer to use that.
428
429=cut
# spent 71µs within AutoLoader::CORE:fteread which was called 4 times, avg 18µs/call: # 4 times (71µs+0s) by AutoLoader::find_filename at line 90 of AutoLoader.pm, avg 18µs/call
sub AutoLoader::CORE:fteread; # xsub
# spent 35µs within AutoLoader::CORE:match which was called 10 times, avg 3µs/call: # 4 times (22µs+0s) by AutoLoader::find_filename at line 72 of AutoLoader.pm, avg 6µs/call # 4 times (8µs+0s) by AutoLoader::find_filename at line 91 of AutoLoader.pm, avg 2µs/call # 2 times (4µs+0s) by AutoLoader::import at line 137 of AutoLoader.pm, avg 2µs/call
sub AutoLoader::CORE:match; # xsub
# spent 119µs within AutoLoader::CORE:regcomp which was called 7 times, avg 17µs/call: # 4 times (44µs+0s) by AutoLoader::find_filename at line 80 of AutoLoader.pm, avg 11µs/call # 3 times (75µs+0s) by AutoLoader::import at line 166 of AutoLoader.pm, avg 25µs/call
sub AutoLoader::CORE:regcomp; # xsub
# spent 42µs within AutoLoader::CORE:subst which was called 16 times, avg 3µs/call: # 5 times (11µs+0s) by AutoLoader::import at line 155 of AutoLoader.pm, avg 2µs/call # 4 times (13µs+0s) by AutoLoader::find_filename at line 80 of AutoLoader.pm, avg 3µs/call # 4 times (3µs+0s) by AutoLoader::find_filename at line 73 of AutoLoader.pm, avg 775ns/call # 3 times (15µs+0s) by AutoLoader::import at line 166 of AutoLoader.pm, avg 5µs/call
sub AutoLoader::CORE:subst; # xsub
# spent 24µs within AutoLoader::CORE:substcont which was called 14 times, avg 2µs/call: # 8 times (12µs+0s) by AutoLoader::find_filename at line 80 of AutoLoader.pm, avg 2µs/call # 6 times (12µs+0s) by AutoLoader::import at line 166 of AutoLoader.pm, avg 2µs/call
sub AutoLoader::CORE:substcont; # xsub