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For xt/tapper-mcp-scheduler-with-db-longrun.t
  Run on Tue May 22 17:18:39 2012
Reported on Tue May 22 17:23:43 2012

Filename/2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/site_perl/5.12.3/x86_64-linux/Variable/Magic.pm
StatementsExecuted 34 statements in 939µs
Subroutines
Calls P F Exclusive
Time
Inclusive
Time
Subroutine
2911202µs284µsVariable::Magic::::castVariable::Magic::cast (xsub)
421170µs70µsVariable::Magic::::getdataVariable::Magic::getdata (xsub)
11133µs45µsVariable::Magic::::wizardVariable::Magic::wizard
11119µs19µsVariable::Magic::::BEGIN@3Variable::Magic::BEGIN@3
11112µs95µsVariable::Magic::::BEGIN@605Variable::Magic::BEGIN@605
11112µs288µsVariable::Magic::::BEGIN@203Variable::Magic::BEGIN@203
11111µs11µsVariable::Magic::::_wizardVariable::Magic::_wizard (xsub)
1117µs14µsVariable::Magic::::BEGIN@6Variable::Magic::BEGIN@6
1116µs8µsVariable::Magic::::BEGIN@5Variable::Magic::BEGIN@5
1116µs6µsVariable::Magic::::BEGIN@19Variable::Magic::BEGIN@19
Call graph for these subroutines as a Graphviz dot language file.
Line State
ments
Time
on line
Calls Time
in subs
Code
1package Variable::Magic;
2
3327µs119µs
# spent 19µs within Variable::Magic::BEGIN@3 which was called: # once (19µs+0s) by B::Hooks::EndOfScope::BEGIN@14 at line 3
use 5.008;
# spent 19µs making 1 call to Variable::Magic::BEGIN@3
4
5319µs210µs
# spent 8µs (6+2) within Variable::Magic::BEGIN@5 which was called: # once (6µs+2µs) by B::Hooks::EndOfScope::BEGIN@14 at line 5
use strict;
# spent 8µs making 1 call to Variable::Magic::BEGIN@5 # spent 2µs making 1 call to strict::import
6339µs221µs
# spent 14µs (7+7) within Variable::Magic::BEGIN@6 which was called: # once (7µs+7µs) by B::Hooks::EndOfScope::BEGIN@14 at line 6
use warnings;
# spent 14µs making 1 call to Variable::Magic::BEGIN@6 # spent 7µs making 1 call to warnings::import
7
8=head1 NAME
9
10Variable::Magic - Associate user-defined magic to variables from Perl.
11
12=head1 VERSION
13
14Version 0.48
15
16=cut
17
181200nsour $VERSION;
19
# spent 6µs within Variable::Magic::BEGIN@19 which was called: # once (6µs+0s) by B::Hooks::EndOfScope::BEGIN@14 at line 21
BEGIN {
2014µs $VERSION = '0.48';
21193µs16µs}
# spent 6µs making 1 call to Variable::Magic::BEGIN@19
22
23=head1 SYNOPSIS
24
25 use Variable::Magic qw<wizard cast VMG_OP_INFO_NAME>;
26
27 { # A variable tracer
28 my $wiz = wizard(
29 set => sub { print "now set to ${$_[0]}!\n" },
30 free => sub { print "destroyed!\n" },
31 );
32
33 my $a = 1;
34 cast $a, $wiz;
35 $a = 2; # "now set to 2!"
36 } # "destroyed!"
37
38 { # A hash with a default value
39 my $wiz = wizard(
40 data => sub { $_[1] },
41 fetch => sub { $_[2] = $_[1] unless exists $_[0]->{$_[2]}; () },
42 store => sub { print "key $_[2] stored in $_[-1]\n" },
43 copy_key => 1,
44 op_info => VMG_OP_INFO_NAME,
45 );
46
47 my %h = (_default => 0, apple => 2);
48 cast %h, $wiz, '_default';
49 print $h{banana}, "\n"; # "0" (there is no 'banana' key in %h)
50 $h{pear} = 1; # "key pear stored in helem"
51 }
52
53=head1 DESCRIPTION
54
55Magic is Perl's way of enhancing variables.
56This mechanism lets the user add extra data to any variable and hook syntactical operations (such as access, assignment or destruction) that can be applied to it.
57With this module, you can add your own magic to any variable without having to write a single line of XS.
58
59You'll realize that these magic variables look a lot like tied variables.
60It's not surprising, as tied variables are implemented as a special kind of magic, just like any 'irregular' Perl variable : scalars like C<$!>, C<$(> or C<$^W>, the C<%ENV> and C<%SIG> hashes, the C<@ISA> array, C<vec()> and C<substr()> lvalues, L<threads::shared> variables...
61They all share the same underlying C API, and this module gives you direct access to it.
62
63Still, the magic made available by this module differs from tieing and overloading in several ways :
64
65=over 4
66
67=item *
68
69It isn't copied on assignment.
70
71You attach it to variables, not values (as for blessed references).
72
73=item *
74
75It doesn't replace the original semantics.
76
77Magic callbacks usually get triggered before the original action takes place, and can't prevent it from happening.
78This also makes catching individual events easier than with C<tie>, where you have to provide fallbacks methods for all actions by usually inheriting from the correct C<Tie::Std*> class and overriding individual methods in your own class.
79
80=item *
81
82It's type-agnostic.
83
84The same magic can be applied on scalars, arrays, hashes, subs or globs.
85But the same hook (see below for a list) may trigger differently depending on the the type of the variable.
86
87=item *
88
89It's mostly invisible at the Perl level.
90
91Magical and non-magical variables cannot be distinguished with C<ref>, C<tied> or another trick.
92
93=item *
94
95It's notably faster.
96
97Mainly because perl's way of handling magic is lighter by nature, and because there's no need for any method resolution.
98Also, since you don't have to reimplement all the variable semantics, you only pay for what you actually use.
99
100=back
101
102The operations that can be overloaded are :
103
104=over 4
105
106=item *
107
108C<get>
109
110This magic is invoked when the variable is evaluated.
111It is never called for arrays and hashes.
112
113=item *
114
115C<set>
116
117This one is triggered each time the value of the variable changes.
118It is called for array subscripts and slices, but never for hashes.
119
120=item *
121
122C<len>
123
124This magic is a little special : it is called when the 'size' or the 'length' of the variable has to be known by Perl.
125Typically, it's the magic involved when an array is evaluated in scalar context, but also on array assignment and loops (C<for>, C<map> or C<grep>).
126The callback has then to return the length as an integer.
127
128=item *
129
130C<clear>
131
132This magic is invoked when the variable is reset, such as when an array is emptied.
133Please note that this is different from undefining the variable, even though the magic is called when the clearing is a result of the undefine (e.g. for an array, but actually a bug prevent it to work before perl 5.9.5 - see the L<history|/PERL MAGIC HISTORY>).
134
135=item *
136
137C<free>
138
139This one can be considered as an object destructor.
140It happens when the variable goes out of scope, but not when it is undefined.
141
142=item *
143
144C<copy>
145
146This magic only applies to tied arrays and hashes.
147It fires when you try to access or change their elements.
148It is available on your perl iff C<MGf_COPY> is true.
149
150=item *
151
152C<dup>
153
154Invoked when the variable is cloned across threads.
155Currently not available.
156
157=item *
158
159C<local>
160
161When this magic is set on a variable, all subsequent localizations of the variable will trigger the callback.
162It is available on your perl iff C<MGf_LOCAL> is true.
163
164=back
165
166The following actions only apply to hashes and are available iff L</VMG_UVAR> is true.
167They are referred to as C<uvar> magics.
168
169=over 4
170
171=item *
172
173C<fetch>
174
175This magic happens each time an element is fetched from the hash.
176
177=item *
178
179C<store>
180
181This one is called when an element is stored into the hash.
182
183=item *
184
185C<exists>
186
187This magic fires when a key is tested for existence in the hash.
188
189=item *
190
191C<delete>
192
193This last one triggers when a key is deleted in the hash, regardless of whether the key actually exists in it.
194
195=back
196
197You can refer to the tests to have more insight of where the different magics are invoked.
198
199=head1 FUNCTIONS
200
201=cut
202
203
# spent 288µs (12+276) within Variable::Magic::BEGIN@203 which was called: # once (12µs+276µs) by B::Hooks::EndOfScope::BEGIN@14 at line 206
BEGIN {
2041300ns require XSLoader;
2051288µs1276µs XSLoader::load(__PACKAGE__, $VERSION);
# spent 276µs making 1 call to XSLoader::load
2061288µs1288µs}
# spent 288µs making 1 call to Variable::Magic::BEGIN@203
207
208=head2 C<wizard>
209
210 wizard(
211 data => sub { ... },
212 get => sub { my ($ref, $data [, $op]) = @_; ... },
213 set => sub { my ($ref, $data [, $op]) = @_; ... },
214 len => sub {
215 my ($ref, $data, $len [, $op]) = @_; ... ; return $newlen
216 },
217 clear => sub { my ($ref, $data [, $op]) = @_; ... },
218 free => sub { my ($ref, $data [, $op]) = @_, ... },
219 copy => sub { my ($ref, $data, $key, $elt [, $op]) = @_; ... },
220 local => sub { my ($ref, $data [, $op]) = @_; ... },
221 fetch => sub { my ($ref, $data, $key [, $op]) = @_; ... },
222 store => sub { my ($ref, $data, $key [, $op]) = @_; ... },
223 exists => sub { my ($ref, $data, $key [, $op]) = @_; ... },
224 delete => sub { my ($ref, $data, $key [, $op]) = @_; ... },
225 copy_key => $bool,
226 op_info => [ 0 | VMG_OP_INFO_NAME | VMG_OP_INFO_OBJECT ],
227 )
228
229This function creates a 'wizard', an opaque type that holds the magic information.
230It takes a list of keys / values as argument, whose keys can be :
231
232=over 4
233
234=item *
235
236C<data>
237
238A code (or string) reference to a private data constructor.
239It is called each time this magic is cast on a variable, and the scalar returned is used as private data storage for it.
240C<$_[0]> is a reference to the magic object and C<@_[1 .. @_-1]> are all extra arguments that were passed to L</cast>.
241
242=item *
243
244C<get>, C<set>, C<len>, C<clear>, C<free>, C<copy>, C<local>, C<fetch>, C<store>, C<exists> and C<delete>
245
246Code (or string) references to the corresponding magic callbacks.
247You don't have to specify all of them : the magic associated with undefined entries simply won't be hooked.
248In those callbacks, C<$_[0]> is always a reference to the magic object and C<$_[1]> is always the private data (or C<undef> when no private data constructor was supplied).
249
250Moreover, when you pass C<< op_info => $num >> to C<wizard>, the last element of C<@_> will be the current op name if C<$num == VMG_OP_INFO_NAME> and a C<B::OP> object representing the current op if C<$num == VMG_OP_INFO_OBJECT>.
251Both have a performance hit, but just getting the name is lighter than getting the op object.
252
253Other arguments are specific to the magic hooked :
254
255=over 8
256
257=item *
258
259C<len>
260
261When the variable is an array or a scalar, C<$_[2]> contains the non-magical length.
262The callback can return the new scalar or array length to use, or C<undef> to default to the normal length.
263
264=item *
265
266C<copy>
267
268C<$_[2]> is a either a copy or an alias of the current key, which means that it is useless to try to change or cast magic on it.
269C<$_[3]> is an alias to the current element (i.e. the value).
270
271=item *
272
273C<fetch>, C<store>, C<exists> and C<delete>
274
275C<$_[2]> is an alias to the current key.
276Nothing prevents you from changing it, but be aware that there lurk dangerous side effects.
277For example, it may rightfully be readonly if the key was a bareword.
278You can get a copy instead by passing C<< copy_key => 1 >> to L</wizard>, which allows you to safely assign to C<$_[2]> in order to e.g. redirect the action to another key.
279This however has a little performance drawback because of the copy.
280
281=back
282
283All the callbacks are expected to return an integer, which is passed straight to the perl magic API.
284However, only the return value of the C<len> callback currently holds a meaning.
285
286=back
287
288Each callback can be specified as :
289
290=over 4
291
292=item *
293
294a code reference, which will be called as a subroutine.
295
296=item *
297
298a string reference, where the string denotes which subroutine is to be called when magic is triggered.
299If the subroutine name is not fully qualified, then the current package at the time the magic is invoked will be used instead.
300
301=item *
302
303a reference to C<undef>, in which case a no-op magic callback is installed instead of the default one.
304This may especially be helpful for 'local' magic, where an empty callback prevents magic from being copied during localization.
305
306=back
307
308Note that C<free> callbacks are I<never> called during global destruction, as there's no way to ensure that the wizard and the C<free> callback weren't destroyed before the variable.
309
310Here's a simple usage example :
311
312 # A simple scalar tracer
313 my $wiz = wizard(
314 get => sub { print STDERR "got ${$_[0]}\n" },
315 set => sub { print STDERR "set to ${$_[0]}\n" },
316 free => sub { print STDERR "${$_[0]} was deleted\n" },
317 );
318
319=cut
320
321
# spent 45µs (33+11) within Variable::Magic::wizard which was called: # once (33µs+11µs) by namespace::autoclean::BEGIN@14 at line 33 of B/Hooks/EndOfScope.pm
sub wizard {
32211µs if (@_ % 2) {
323 require Carp;
324 Carp::croak('Wrong number of arguments for wizard()');
325 }
326
32713µs my %opts = @_;
328
32913µs my @keys = qw<op_info data get set len clear free copy dup>;
3301900ns push @keys, 'local' if MGf_LOCAL;
33111µs push @keys, qw<fetch store exists delete copy_key> if VMG_UVAR;
332
3331400ns my ($wiz, $err);
334 {
3352600ns local $@;
336230µs111µs $wiz = eval { _wizard(map $opts{$_}, @keys) };
# spent 11µs making 1 call to Variable::Magic::_wizard
3371600ns $err = $@;
338 }
3391300ns if ($err) {
340 $err =~ s/\sat\s+.*?\n//;
341 require Carp;
342 Carp::croak($err);
343 }
344
34514µs return $wiz;
346}
347
348=head2 C<cast>
349
350 cast [$@%&*]var, $wiz, ...
351
352This function associates C<$wiz> magic to the variable supplied, without overwriting any other kind of magic.
353It returns true on success or when C<$wiz> magic is already present, and croaks on error.
354All extra arguments specified after C<$wiz> are passed to the private data constructor in C<@_[1 .. @_-1]>.
355If the variable isn't a hash, any C<uvar> callback of the wizard is safely ignored.
356
357 # Casts $wiz onto $x, and pass '1' to the data constructor.
358 my $x;
359 cast $x, $wiz, 1;
360
361The C<var> argument can be an array or hash value.
362Magic for those behaves like for any other scalar, except that it is dispelled when the entry is deleted from the container.
363For example, if you want to call C<POSIX::tzset> each time the C<'TZ'> environment variable is changed in C<%ENV>, you can use :
364
365 use POSIX;
366 cast $ENV{TZ}, wizard set => sub { POSIX::tzset(); () };
367
368If you want to overcome the possible deletion of the C<'TZ'> entry, you have no choice but to rely on C<store> uvar magic.
369
370=head2 C<getdata>
371
372 getdata [$@%&*]var, $wiz
373
374This accessor fetches the private data associated with the magic C<$wiz> in the variable.
375It croaks when C<$wiz> do not represent a valid magic object, and returns an empty list if no such magic is attached to the variable or when the wizard has no data constructor.
376
377 # Get the attached data, or undef if the wizard does not attach any.
378 my $data = getdata $x, $wiz;
379
380=head2 C<dispell>
381
382 dispell [$@%&*]variable, $wiz
383
384The exact opposite of L</cast> : it dissociates C<$wiz> magic from the variable.
385This function returns true on success, C<0> when no magic represented by C<$wiz> could be found in the variable, and croaks if the supplied wizard is invalid.
386
387 # Dispell now.
388 die 'no such magic in $x' unless dispell $x, $wiz;
389
390=head1 CONSTANTS
391
392=head2 C<MGf_COPY>
393
394Evaluates to true iff the 'copy' magic is available.
395
396=head2 C<MGf_DUP>
397
398Evaluates to true iff the 'dup' magic is available.
399
400=head2 C<MGf_LOCAL>
401
402Evaluates to true iff the 'local' magic is available.
403
404=head2 C<VMG_UVAR>
405
406When this constant is true, you can use the C<fetch,store,exists,delete> callbacks on hashes.
407Initial VMG_UVAR capability was introduced in perl 5.9.5, with a fully functional implementation
408shipped with perl 5.10.0.
409
410=head2 C<VMG_COMPAT_SCALAR_LENGTH_NOLEN>
411
412True for perls that don't call 'len' magic when taking the C<length> of a magical scalar.
413
414=head2 C<VMG_COMPAT_ARRAY_PUSH_NOLEN>
415
416True for perls that don't call 'len' magic when you push an element in a magical array.
417Starting from perl 5.11.0, this only refers to pushes in non-void context and hence is false.
418
419=head2 C<VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID>
420
421True for perls that don't call 'len' magic when you push in void context an element in a magical array.
422
423=head2 C<VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID>
424
425True for perls that don't call 'len' magic when you unshift in void context an element in a magical array.
426
427=head2 C<VMG_COMPAT_ARRAY_UNDEF_CLEAR>
428
429True for perls that call 'clear' magic when undefining magical arrays.
430
431=head2 C<VMG_COMPAT_HASH_DELETE_NOUVAR_VOID>
432
433True for perls that don't call 'delete' uvar magic when you delete an element from a hash in void context.
434
435=head2 C<VMG_COMPAT_GLOB_GET>
436
437True for perls that call 'get' magic for operations on globs.
438
439=head2 C<VMG_PERL_PATCHLEVEL>
440
441The perl patchlevel this module was built with, or C<0> for non-debugging perls.
442
443=head2 C<VMG_THREADSAFE>
444
445True iff this module could have been built with thread-safety features enabled.
446
447=head2 C<VMG_FORKSAFE>
448
449True iff this module could have been built with fork-safety features enabled.
450This will always be true except on Windows where it's false for perl 5.10.0 and below .
451
452=head2 C<VMG_OP_INFO_NAME>
453
454Value to pass with C<op_info> to get the current op name in the magic callbacks.
455
456=head2 C<VMG_OP_INFO_OBJECT>
457
458Value to pass with C<op_info> to get a C<B::OP> object representing the current op in the magic callbacks.
459
460=head1 COOKBOOK
461
462=head2 Associate an object to any perl variable
463
464This technique can be useful for passing user data through limited APIs.
465It is similar to using inside-out objects, but without the drawback of having to implement a complex destructor.
466
467 {
468 package Magical::UserData;
469
470 use Variable::Magic qw<wizard cast getdata>;
471
472 my $wiz = wizard data => sub { \$_[1] };
473
474 sub ud (\[$@%*&]) : lvalue {
475 my ($var) = @_;
476 my $data = &getdata($var, $wiz);
477 unless (defined $data) {
478 $data = \(my $slot);
479 &cast($var, $wiz, $slot)
480 or die "Couldn't cast UserData magic onto the variable";
481 }
482 $$data;
483 }
484 }
485
486 {
487 BEGIN { *ud = \&Magical::UserData::ud }
488
489 my $cb;
490 $cb = sub { print 'Hello, ', ud(&$cb), "!\n" };
491
492 ud(&$cb) = 'world';
493 $cb->(); # Hello, world!
494 }
495
496=head2 Recursively cast magic on datastructures
497
498C<cast> can be called from any magical callback, and in particular from C<data>.
499This allows you to recursively cast magic on datastructures :
500
501 my $wiz;
502 $wiz = wizard data => sub {
503 my ($var, $depth) = @_;
504 $depth ||= 0;
505 my $r = ref $var;
506 if ($r eq 'ARRAY') {
507 &cast((ref() ? $_ : \$_), $wiz, $depth + 1) for @$var;
508 } elsif ($r eq 'HASH') {
509 &cast((ref() ? $_ : \$_), $wiz, $depth + 1) for values %$var;
510 }
511 return $depth;
512 },
513 free => sub {
514 my ($var, $depth) = @_;
515 my $r = ref $var;
516 print "free $r at depth $depth\n";
517 ();
518 };
519
520 {
521 my %h = (
522 a => [ 1, 2 ],
523 b => { c => 3 }
524 );
525 cast %h, $wiz;
526 }
527
528When C<%h> goes out of scope, this will print something among the lines of :
529
530 free HASH at depth 0
531 free HASH at depth 1
532 free SCALAR at depth 2
533 free ARRAY at depth 1
534 free SCALAR at depth 3
535 free SCALAR at depth 3
536
537Of course, this example does nothing with the values that are added after the C<cast>.
538
539=head1 PERL MAGIC HISTORY
540
541The places where magic is invoked have changed a bit through perl history.
542Here's a little list of the most recent ones.
543
544=over 4
545
546=item *
547
548B<5.6.x>
549
550I<p14416> : 'copy' and 'dup' magic.
551
552=item *
553
554B<5.8.9>
555
556I<p28160> : Integration of I<p25854> (see below).
557
558I<p32542> : Integration of I<p31473> (see below).
559
560=item *
561
562B<5.9.3>
563
564I<p25854> : 'len' magic is no longer called when pushing an element into a magic array.
565
566I<p26569> : 'local' magic.
567
568=item *
569
570B<5.9.5>
571
572I<p31064> : Meaningful 'uvar' magic.
573
574I<p31473> : 'clear' magic wasn't invoked when undefining an array.
575The bug is fixed as of this version.
576
577=item *
578
579B<5.10.0>
580
581Since C<PERL_MAGIC_uvar> is uppercased, C<hv_magic_check()> triggers 'copy' magic on hash stores for (non-tied) hashes that also have 'uvar' magic.
582
583=item *
584
585B<5.11.x>
586
587I<p32969> : 'len' magic is no longer invoked when calling C<length> with a magical scalar.
588
589I<p34908> : 'len' magic is no longer called when pushing / unshifting an element into a magical array in void context.
590The C<push> part was already covered by I<p25854>.
591
592I<g9cdcb38b> : 'len' magic is called again when pushing into a magical array in non-void context.
593
594=back
595
596=head1 EXPORT
597
598The functions L</wizard>, L</cast>, L</getdata> and L</dispell> are only exported on request.
599All of them are exported by the tags C<':funcs'> and C<':all'>.
600
601All the constants are also only exported on request, either individually or by the tags C<':consts'> and C<':all'>.
602
603=cut
604
6053106µs2178µs
# spent 95µs (12+83) within Variable::Magic::BEGIN@605 which was called: # once (12µs+83µs) by B::Hooks::EndOfScope::BEGIN@14 at line 605
use base qw<Exporter>;
# spent 95µs making 1 call to Variable::Magic::BEGIN@605 # spent 83µs making 1 call to base::import
606
6071400nsour @EXPORT = ();
60815µsour %EXPORT_TAGS = (
609 'funcs' => [ qw<wizard cast getdata dispell> ],
610 'consts' => [ qw<
611 MGf_COPY MGf_DUP MGf_LOCAL VMG_UVAR
612 VMG_COMPAT_SCALAR_LENGTH_NOLEN
613 VMG_COMPAT_ARRAY_PUSH_NOLEN VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID
614 VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID
615 VMG_COMPAT_ARRAY_UNDEF_CLEAR
616 VMG_COMPAT_HASH_DELETE_NOUVAR_VOID
617 VMG_COMPAT_GLOB_GET
618 VMG_PERL_PATCHLEVEL
619 VMG_THREADSAFE VMG_FORKSAFE
620 VMG_OP_INFO_NAME VMG_OP_INFO_OBJECT
621 > ],
622);
623112µsour @EXPORT_OK = map { @$_ } values %EXPORT_TAGS;
62413µs$EXPORT_TAGS{'all'} = [ @EXPORT_OK ];
625
626=head1 CAVEATS
627
628If you store a magic object in the private data slot, the magic won't be accessible by L</getdata> since it's not copied by assignment.
629The only way to address this would be to return a reference.
630
631If you define a wizard with a C<free> callback and cast it on itself, this destructor won't be called because the wizard will be destroyed first.
632
633In order to define magic on hash members, you need at least L<perl> 5.10.0 (see L</VMG_UVAR>)
634
635=head1 DEPENDENCIES
636
637L<perl> 5.8.
638
639A C compiler.
640This module may happen to build with a C++ compiler as well, but don't rely on it, as no guarantee is made in this regard.
641
642L<Carp> (standard since perl 5), L<XSLoader> (standard since perl 5.006).
643
644Copy tests need L<Tie::Array> (standard since perl 5.005) and L<Tie::Hash> (since 5.002).
645
646Some uvar tests need L<Hash::Util::FieldHash> (standard since perl 5.009004).
647
648Glob tests need L<Symbol> (standard since perl 5.002).
649
650Threads tests need L<threads> and L<threads::shared>.
651
652=head1 SEE ALSO
653
654L<perlguts> and L<perlapi> for internal information about magic.
655
656L<perltie> and L<overload> for other ways of enhancing objects.
657
658=head1 AUTHOR
659
660Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
661
662You can contact me by mail or on C<irc.perl.org> (vincent).
663
664=head1 BUGS
665
666Please report any bugs or feature requests to C<bug-variable-magic at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Variable-Magic>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
667
668=head1 SUPPORT
669
670You can find documentation for this module with the perldoc command.
671
672 perldoc Variable::Magic
673
674Tests code coverage report is available at L<http://www.profvince.com/perl/cover/Variable-Magic>.
675
676=head1 COPYRIGHT & LICENSE
677
678Copyright 2007,2008,2009,2010,2011,2012 Vincent Pit, all rights reserved.
679
680This program is free software; you can redistribute it and/or modify it
681under the same terms as Perl itself.
682
683=cut
684
68517µs1; # End of Variable::Magic
 
# spent 11µs within Variable::Magic::_wizard which was called: # once (11µs+0s) by Variable::Magic::wizard at line 336
sub Variable::Magic::_wizard; # xsub
# spent 284µs (202+82) within Variable::Magic::cast which was called 29 times, avg 10µs/call: # 29 times (202µs+82µs) by B::Hooks::EndOfScope::on_scope_end at line 44 of B/Hooks/EndOfScope.pm, avg 10µs/call
sub Variable::Magic::cast; # xsub
# spent 70µs within Variable::Magic::getdata which was called 42 times, avg 2µs/call: # 42 times (70µs+0s) by B::Hooks::EndOfScope::on_scope_end at line 40 of B/Hooks/EndOfScope.pm, avg 2µs/call
sub Variable::Magic::getdata; # xsub