← Index
NYTProf Performance Profile   « line view »
For split.pl
  Run on Thu Apr 20 02:05:47 2023
Reported on Thu Apr 20 18:31:09 2023

Filename/usr/lib/x86_64-linux-gnu/perl-base/Carp.pm
StatementsExecuted 77 statements in 2.99ms
Subroutines
Calls P F Exclusive
Time		 Inclusive
Time		 Subroutine
111308µs344µsCarp::::BEGIN@168 Carp::BEGIN@168
11136µs36µsCarp::::BEGIN@95 Carp::BEGIN@95
11121µs21µsCarp::::BEGIN@572 Carp::BEGIN@572
11118µs25µsCarp::::BEGIN@6 Carp::BEGIN@6
33113µs13µsCarp::::_fetch_sub Carp::_fetch_sub
1117µs13µsCarp::::BEGIN@137 Carp::BEGIN@137
1117µs7µsCarp::::BEGIN@3 Carp::BEGIN@3
1116µs11µsCarp::::BEGIN@728 Carp::BEGIN@728
1114µs8µsCarp::::BEGIN@254 Carp::BEGIN@254
1114µs4µsCarp::::BEGIN@49 Carp::BEGIN@49
1114µs8µsCarp::::BEGIN@73 Carp::BEGIN@73
1114µs9µsCarp::::BEGIN@187 Carp::BEGIN@187
1114µs11µsCarp::::BEGIN@61 Carp::BEGIN@61
1114µs15µsCarp::::BEGIN@742 Carp::BEGIN@742
1114µs4µsCarp::::BEGIN@294 Carp::BEGIN@294
1113µs6µsCarp::::BEGIN@749 Carp::BEGIN@749
1113µs3µsCarp::::_univ_mod_loaded Carp::_univ_mod_loaded
1113µs4µsCarp::::BEGIN@4 Carp::BEGIN@4
1112µs14µsCarp::::BEGIN@5 Carp::BEGIN@5
0000s0sCarp::::__ANON__[:103] Carp::__ANON__[:103]
0000s0sCarp::::__ANON__[:115] Carp::__ANON__[:115]
0000s0sCarp::::__ANON__[:139] Carp::__ANON__[:139]
0000s0sCarp::::__ANON__[:184] Carp::__ANON__[:184]
0000s0sCarp::::__ANON__[:188] Carp::__ANON__[:188]
0000s0sCarp::::__ANON__[:190] Carp::__ANON__[:190]
0000s0sCarp::::__ANON__[:192] Carp::__ANON__[:192]
0000s0sCarp::::__ANON__[:208] Carp::__ANON__[:208]
0000s0sCarp::::__ANON__[:406] Carp::__ANON__[:406]
0000s0sCarp::::__ANON__[:417] Carp::__ANON__[:417]
0000s0sCarp::::__ANON__[:66] Carp::__ANON__[:66]
0000s0sCarp::::__ANON__[:86] Carp::__ANON__[:86]
0000s0sCarp::::_cgc Carp::_cgc
0000s0sCarp::::caller_info Carp::caller_info
0000s0sCarp::::carp Carp::carp
0000s0sCarp::::cluck Carp::cluck
0000s0sCarp::::confess Carp::confess
0000s0sCarp::::croak Carp::croak
0000s0sCarp::::export_fail Carp::export_fail
0000s0sCarp::::format_arg Carp::format_arg
0000s0sCarp::::get_status Carp::get_status
0000s0sCarp::::get_subname Carp::get_subname
0000s0sCarp::::long_error_loc Carp::long_error_loc
0000s0sCarp::::longmess Carp::longmess
0000s0sCarp::::longmess_heavy Carp::longmess_heavy
0000s0sCarp::::ret_backtrace Carp::ret_backtrace
0000s0sCarp::::ret_summary Carp::ret_summary
0000s0sCarp::::short_error_loc Carp::short_error_loc
0000s0sCarp::::shortmess Carp::shortmess
0000s0sCarp::::shortmess_heavy Carp::shortmess_heavy
0000s0sCarp::::str_len_trim Carp::str_len_trim
0000s0sCarp::::trusts Carp::trusts
0000s0sCarp::::trusts_directly Carp::trusts_directly
0000s0sRegexp::::CARP_TRACERegexp::CARP_TRACE
Call graph for these subroutines as a Graphviz dot language file.
Line State
ments		 Time
on line		 Calls Time
in subs		 Code
1package Carp;
2
3224µs17µs
# spent 7µs within Carp::BEGIN@3 which was called: # once (7µs+0s) by diagnostics::BEGIN@186 at line 3
{ use 5.006; }
# spent 7µs making 1 call to Carp::BEGIN@3
4313µs25µs
# spent 4µs (3+1) within Carp::BEGIN@4 which was called: # once (3µs+1µs) by diagnostics::BEGIN@186 at line 4
use strict;
# spent 4µs making 1 call to Carp::BEGIN@4 # spent 1µs making 1 call to strict::import
5239µs226µs
# spent 14µs (2+12) within Carp::BEGIN@5 which was called: # once (2µs+12µs) by diagnostics::BEGIN@186 at line 5
use warnings;
# spent 14µs making 1 call to Carp::BEGIN@5 # spent 12µs making 1 call to warnings::import
6
# spent 25µs (18+8) within Carp::BEGIN@6 which was called: # once (18µs+8µs) by diagnostics::BEGIN@186 at line 26
BEGIN {
7 # Very old versions of warnings.pm load Carp. This can go wrong due
8 # to the circular dependency. If warnings is invoked before Carp,
9 # then warnings starts by loading Carp, then Carp (above) tries to
10 # invoke warnings, and gets nothing because warnings is in the process
11 # of loading and hasn't defined its import method yet. If we were
12 # only turning on warnings ("use warnings" above) this wouldn't be too
13 # bad, because Carp would just gets the state of the -w switch and so
14 # might not get some warnings that it wanted. The real problem is
15 # that we then want to turn off Unicode warnings, but "no warnings
16 # 'utf8'" won't be effective if we're in this circular-dependency
17 # situation. So, if warnings.pm is an affected version, we turn
18 # off all warnings ourselves by directly setting ${^WARNING_BITS}.
19 # On unaffected versions, we turn off just Unicode warnings, via
20 # the proper API.
21114µs if(!defined($warnings::VERSION) || eval($warnings::VERSION) < 1.06) {
# spent 2µs executing statements in string eval
22 ${^WARNING_BITS} = "";
23 } else {
241900ns18µs "warnings"->unimport("utf8");
# spent 8µs making 1 call to warnings::unimport
25 }
261108µs125µs}
# spent 25µs making 1 call to Carp::BEGIN@6
27
28
# spent 13µs within Carp::_fetch_sub which was called 3 times, avg 4µs/call: # once (7µs+0s) by Carp::BEGIN@61 at line 62 # once (3µs+0s) by Carp::BEGIN@73 at line 74 # once (3µs+0s) by Carp::BEGIN@137 at line 144
sub _fetch_sub { # fetch sub without autovivifying
2931µs my($pack, $sub) = @_;
303900ns $pack .= '::';
31 # only works with top-level packages
3231µs return unless exists($::{$pack});
3331µs for ($::{$pack}) {
3435µs return unless ref \$_ eq 'GLOB' && *$_{HASH} && exists $$_{$sub};
353800ns for ($$_{$sub}) {
36 return ref \$_ eq 'GLOB' ? *$_{CODE} : undef
3737µs }
38 }
39}
40
41# UTF8_REGEXP_PROBLEM is a compile-time constant indicating whether Carp
42# must avoid applying a regular expression to an upgraded (is_utf8)
43# string. There are multiple problems, on different Perl versions,
44# that require this to be avoided. All versions prior to 5.13.8 will
45# load utf8_heavy.pl for the swash system, even if the regexp doesn't
46# use character classes. Perl 5.6 and Perls [5.11.2, 5.13.11) exhibit
47# specific problems when Carp is being invoked in the aftermath of a
48# syntax error.
49
# spent 4µs within Carp::BEGIN@49 which was called: # once (4µs+0s) by diagnostics::BEGIN@186 at line 55
BEGIN {
5014µs if("$]" < 5.013011) {
51 *UTF8_REGEXP_PROBLEM = sub () { 1 };
52 } else {
531800ns *UTF8_REGEXP_PROBLEM = sub () { 0 };
54 }
55145µs14µs}
# spent 4µs making 1 call to Carp::BEGIN@49
56
57# is_utf8() is essentially the utf8::is_utf8() function, which indicates
58# whether a string is represented in the upgraded form (using UTF-8
59# internally). As utf8::is_utf8() is only available from Perl 5.8
60# onwards, extra effort is required here to make it work on Perl 5.6.
61
# spent 11µs (4+7) within Carp::BEGIN@61 which was called: # once (4µs+7µs) by diagnostics::BEGIN@186 at line 68
BEGIN {
6212µs17µs if(defined(my $sub = _fetch_sub utf8 => 'is_utf8')) {
# spent 7µs making 1 call to Carp::_fetch_sub
63 *is_utf8 = $sub;
64 } else {
65 # black magic for perl 5.6
66 *is_utf8 = sub { unpack("C", "\xaa".$_[0]) != 170 };
67 }
68187µs111µs}
# spent 11µs making 1 call to Carp::BEGIN@61
69
70# The downgrade() function defined here is to be used for attempts to
71# downgrade where it is acceptable to fail. It must be called with a
72# second argument that is a true value.
73
# spent 8µs (4+3) within Carp::BEGIN@73 which was called: # once (4µs+3µs) by diagnostics::BEGIN@186 at line 88
BEGIN {
7412µs13µs if(defined(my $sub = _fetch_sub utf8 => 'downgrade')) {
# spent 3µs making 1 call to Carp::_fetch_sub
75 *downgrade = \&{"utf8::downgrade"};
76 } else {
77 *downgrade = sub {
78 my $r = "";
79 my $l = length($_[0]);
80 for(my $i = 0; $i != $l; $i++) {
81 my $o = ord(substr($_[0], $i, 1));
82 return if $o > 255;
83 $r .= chr($o);
84 }
85 $_[0] = $r;
86 };
87 }
88168µs18µs}
# spent 8µs making 1 call to Carp::BEGIN@73
89
90# is_safe_printable_codepoint() indicates whether a character, specified
91# by integer codepoint, is OK to output literally in a trace. Generally
92# this is if it is a printable character in the ancestral character set
93# (ASCII or EBCDIC). This is used on some Perls in situations where a
94# regexp can't be used.
95
# spent 36µs within Carp::BEGIN@95 which was called: # once (36µs+0s) by diagnostics::BEGIN@186 at line 117
BEGIN {
96 *is_safe_printable_codepoint =
97 "$]" >= 5.007_003 ?
98 eval(q(sub ($) {
99 my $u = utf8::native_to_unicode($_[0]);
100 $u >= 0x20 && $u <= 0x7e;
101 }))
102 : ord("A") == 65 ?
103 sub ($) { $_[0] >= 0x20 && $_[0] <= 0x7e }
104 :
105 sub ($) {
106 # Early EBCDIC
107 # 3 EBCDIC code pages supported then; all controls but one
108 # are the code points below SPACE. The other one is 0x5F on
109 # POSIX-BC; FF on the other two.
110 # FIXME: there are plenty of unprintable codepoints other
111 # than those that this code and the comment above identifies
112 # as "controls".
113 $_[0] >= ord(" ") && $_[0] <= 0xff &&
114 $_[0] != (ord ("^") == 106 ? 0x5f : 0xff);
115 }
116134µs ;
# spent 3µs executing statements in string eval
1171122µs136µs}
# spent 36µs making 1 call to Carp::BEGIN@95
118
119
# spent 3µs within Carp::_univ_mod_loaded which was called: # once (3µs+0s) by Carp::BEGIN@137 at line 138
sub _univ_mod_loaded {
1201400ns return 0 unless exists($::{"UNIVERSAL::"});
1211300ns for ($::{"UNIVERSAL::"}) {
12215µs return 0 unless ref \$_ eq "GLOB" && *$_{HASH} && exists $$_{"$_[0]::"};
123 for ($$_{"$_[0]::"}) {
124 return 0 unless ref \$_ eq "GLOB" && *$_{HASH} && exists $$_{"VERSION"};
125 for ($$_{"VERSION"}) {
126 return 0 unless ref \$_ eq "GLOB";
127 return ${*$_{SCALAR}};
128 }
129 }
130 }
131}
132
133# _maybe_isa() is usually the UNIVERSAL::isa function. We have to avoid
134# the latter if the UNIVERSAL::isa module has been loaded, to avoid infi-
135# nite recursion; in that case _maybe_isa simply returns true.
1361100nsmy $isa;
137
# spent 13µs (7+6) within Carp::BEGIN@137 which was called: # once (7µs+6µs) by diagnostics::BEGIN@186 at line 146
BEGIN {
13812µs13µs if (_univ_mod_loaded('isa')) {
# spent 3µs making 1 call to Carp::_univ_mod_loaded
139 *_maybe_isa = sub { 1 }
140 }
141 else {
142 # Since we have already done the check, record $isa for use below
143 # when defining _StrVal.
1441900ns13µs *_maybe_isa = $isa = _fetch_sub(UNIVERSAL => "isa");
# spent 3µs making 1 call to Carp::_fetch_sub
145 }
146181µs113µs}
# spent 13µs making 1 call to Carp::BEGIN@137
147
148# We need an overload::StrVal or equivalent function, but we must avoid
149# loading any modules on demand, as Carp is used from __DIE__ handlers and
150# may be invoked after a syntax error.
151# We can copy recent implementations of overload::StrVal and use
152# overloading.pm, which is the fastest implementation, so long as
153# overloading is available. If it is not available, we use our own pure-
154# Perl StrVal. We never actually use overload::StrVal, for various rea-
155# sons described below.
156# overload versions are as follows:
157# undef-1.00 (up to perl 5.8.0) uses bless (avoid!)
158# 1.01-1.17 (perl 5.8.1 to 5.14) uses Scalar::Util
159# 1.18+ (perl 5.16+) uses overloading
160# The ancient 'bless' implementation (that inspires our pure-Perl version)
161# blesses unblessed references and must be avoided. Those using
162# Scalar::Util use refaddr, possibly the pure-Perl implementation, which
163# has the same blessing bug, and must be avoided. Also, Scalar::Util is
164# loaded on demand. Since we avoid the Scalar::Util implementations, we
165# end up having to implement our own overloading.pm-based version for perl
166# 5.10.1 to 5.14. Since it also works just as well in more recent ver-
167# sions, we use it there, too.
168
# spent 344µs (308+36) within Carp::BEGIN@168 which was called: # once (308µs+36µs) by diagnostics::BEGIN@186 at line 210
BEGIN {
169274µs if (eval { require "overloading.pm" }) {
170121µs *_StrVal = eval 'sub { no overloading; "$_[0]" }'
# spent 22µs executing statements in string eval
# includes 9µs spent executing 1 call to 2 subs defined therein.
171 }
172 else {
173 # Work around the UNIVERSAL::can/isa modules to avoid recursion.
174
175 # _mycan is either UNIVERSAL::can, or, in the presence of an
176 # override, overload::mycan.
177 *_mycan = _univ_mod_loaded('can')
178 ? do { require "overload.pm"; _fetch_sub overload => 'mycan' }
179 : \&UNIVERSAL::can;
180
181 # _blessed is either UNIVERAL::isa(...), or, in the presence of an
182 # override, a hideous, but fairly reliable, workaround.
183 *_blessed = $isa
184 ? sub { &$isa($_[0], "UNIVERSAL") }
185 : sub {
186 my $probe = "UNIVERSAL::Carp_probe_" . rand;
1872132µs214µs
# spent 9µs (4+5) within Carp::BEGIN@187 which was called: # once (4µs+5µs) by diagnostics::BEGIN@186 at line 187
no strict 'refs';
# spent 9µs making 1 call to Carp::BEGIN@187 # spent 5µs making 1 call to strict::unimport
188 local *$probe = sub { "unlikely string" };
189 local $@;
190 local $SIG{__DIE__} = sub{};
191 (eval { $_[0]->$probe } || '') eq 'unlikely string'
192 };
193
194 *_StrVal = sub {
195 my $pack = ref $_[0];
196 # Perl's overload mechanism uses the presence of a special
197 # "method" named "((" or "()" to signal it is in effect.
198 # This test seeks to see if it has been set up. "((" post-
199 # dates overloading.pm, so we can skip it.
200 return "$_[0]" unless _mycan($pack, "()");
201 # Even at this point, the invocant may not be blessed, so
202 # check for that.
203 return "$_[0]" if not _blessed($_[0]);
204 bless $_[0], "Carp";
205 my $str = "$_[0]";
206 bless $_[0], $pack;
207 $pack . substr $str, index $str, "=";
208 }
209 }
2101128µs1344µs}
# spent 344µs making 1 call to Carp::BEGIN@168
211
2121300nsour $VERSION = '1.52';
2131800ns$VERSION =~ tr/_//d;
214
2151200nsour $MaxEvalLen = 0;
2161100nsour $Verbose = 0;
2171100nsour $CarpLevel = 0;
21810sour $MaxArgLen = 64; # How much of each argument to print. 0 = all.
2191100nsour $MaxArgNums = 8; # How many arguments to print. 0 = all.
2201100nsour $RefArgFormatter = undef; # allow caller to format reference arguments
221
222176µsrequire Exporter;
22316µsour @ISA = ('Exporter');
2241500nsour @EXPORT = qw(confess croak carp);
2251400nsour @EXPORT_OK = qw(cluck verbose longmess shortmess);
2261200nsour @EXPORT_FAIL = qw(verbose); # hook to enable verbose mode
227
228# The members of %Internal are packages that are internal to perl.
229# Carp will not report errors from within these packages if it
230# can. The members of %CarpInternal are internal to Perl's warning
231# system. Carp will not report errors from within these packages
232# either, and will not report calls *to* these packages for carp and
233# croak. They replace $CarpLevel, which is deprecated. The
234# $Max(EvalLen|(Arg(Len|Nums)) variables are used to specify how the eval
235# text and function arguments should be formatted when printed.
236
237our %CarpInternal;
238our %Internal;
239
240# disable these by default, so they can live w/o require Carp
2411800ns$CarpInternal{Carp}++;
2421200ns$CarpInternal{warnings}++;
2431200ns$Internal{Exporter}++;
2441100ns$Internal{'Exporter::Heavy'}++;
245
246# if the caller specifies verbose usage ("perl -MCarp=verbose script.pl")
247# then the following method will be called by the Exporter which knows
248# to do this thanks to @EXPORT_FAIL, above. $_[1] will contain the word
249# 'verbose'.
250
251sub export_fail { shift; $Verbose = shift if $_[0] eq 'verbose'; @_ }
252
253sub _cgc {
2542218µs212µs
# spent 8µs (4+4) within Carp::BEGIN@254 which was called: # once (4µs+4µs) by diagnostics::BEGIN@186 at line 254
no strict 'refs';
# spent 8µs making 1 call to Carp::BEGIN@254 # spent 4µs making 1 call to strict::unimport
255 return \&{"CORE::GLOBAL::caller"} if defined &{"CORE::GLOBAL::caller"};
256 return;
257}
258
259sub longmess {
260 local($!, $^E);
261 # Icky backwards compatibility wrapper. :-(
262 #
263 # The story is that the original implementation hard-coded the
264 # number of call levels to go back, so calls to longmess were off
265 # by one. Other code began calling longmess and expecting this
266 # behaviour, so the replacement has to emulate that behaviour.
267 my $cgc = _cgc();
268 my $call_pack = $cgc ? $cgc->() : caller();
269 if ( $Internal{$call_pack} or $CarpInternal{$call_pack} ) {
270 return longmess_heavy(@_);
271 }
272 else {
273 local $CarpLevel = $CarpLevel + 1;
274 return longmess_heavy(@_);
275 }
276}
277
278our @CARP_NOT;
279
280sub shortmess {
281 local($!, $^E);
282 my $cgc = _cgc();
283
284 # Icky backwards compatibility wrapper. :-(
285 local @CARP_NOT = scalar( $cgc ? $cgc->() : caller() );
286 shortmess_heavy(@_);
287}
288
289sub croak { die shortmess @_ }
290sub confess { die longmess @_ }
291sub carp { warn shortmess @_ }
292sub cluck { warn longmess @_ }
293
294
# spent 4µs within Carp::BEGIN@294 which was called: # once (4µs+0s) by diagnostics::BEGIN@186 at line 301
BEGIN {
29514µs if("$]" >= 5.015002 || ("$]" >= 5.014002 && "$]" < 5.015) ||
296 ("$]" >= 5.012005 && "$]" < 5.013)) {
297 *CALLER_OVERRIDE_CHECK_OK = sub () { 1 };
298 } else {
299 *CALLER_OVERRIDE_CHECK_OK = sub () { 0 };
300 }
3011944µs14µs}
# spent 4µs making 1 call to Carp::BEGIN@294
302
303sub caller_info {
304 my $i = shift(@_) + 1;
305 my %call_info;
306 my $cgc = _cgc();
307 {
308 # Some things override caller() but forget to implement the
309 # @DB::args part of it, which we need. We check for this by
310 # pre-populating @DB::args with a sentinel which no-one else
311 # has the address of, so that we can detect whether @DB::args
312 # has been properly populated. However, on earlier versions
313 # of perl this check tickles a bug in CORE::caller() which
314 # leaks memory. So we only check on fixed perls.
315 @DB::args = \$i if CALLER_OVERRIDE_CHECK_OK;
316 package DB;
317
- -
322 unless ( defined $call_info{file} ) {
323 return ();
324 }
325
326 my $sub_name = Carp::get_subname( \%call_info );
327 if ( $call_info{has_args} ) {
328 # Guard our serialization of the stack from stack refcounting bugs
329 # NOTE this is NOT a complete solution, we cannot 100% guard against
330 # these bugs. However in many cases Perl *is* capable of detecting
331 # them and throws an error when it does. Unfortunately serializing
332 # the arguments on the stack is a perfect way of finding these bugs,
333 # even when they would not affect normal program flow that did not
334 # poke around inside the stack. Inside of Carp.pm it makes little
335 # sense reporting these bugs, as Carp's job is to report the callers
336 # errors, not the ones it might happen to tickle while doing so.
337 # See: https://rt.perl.org/Public/Bug/Display.html?id=131046
338 # and: https://rt.perl.org/Public/Bug/Display.html?id=52610
339 # for more details and discussion. - Yves
340 my @args = map {
341 my $arg;
342 local $@= $@;
343 eval {
344 $arg = $_;
345 1;
346 } or do {
347 $arg = '** argument not available anymore **';
348 };
349 $arg;
350 } @DB::args;
351 if (CALLER_OVERRIDE_CHECK_OK && @args == 1
352 && ref $args[0] eq ref \$i
353 && $args[0] == \$i ) {
354 @args = (); # Don't let anyone see the address of $i
355 local $@;
356 my $where = eval {
357 my $func = $cgc or return '';
358 my $gv =
359 (_fetch_sub B => 'svref_2object' or return '')
360 ->($func)->GV;
361 my $package = $gv->STASH->NAME;
362 my $subname = $gv->NAME;
363 return unless defined $package && defined $subname;
364
365 # returning CORE::GLOBAL::caller isn't useful for tracing the cause:
366 return if $package eq 'CORE::GLOBAL' && $subname eq 'caller';
367 " in &${package}::$subname";
368 } || '';
369 @args
370 = "** Incomplete caller override detected$where; \@DB::args were not set **";
371 }
372 else {
373 my $overflow;
374 if ( $MaxArgNums and @args > $MaxArgNums )
375 { # More than we want to show?
376 $#args = $MaxArgNums - 1;
377 $overflow = 1;
378 }
379
380 @args = map { Carp::format_arg($_) } @args;
381
382 if ($overflow) {
383 push @args, '...';
384 }
385 }
386
387 # Push the args onto the subroutine
388 $sub_name .= '(' . join( ', ', @args ) . ')';
389 }
390 $call_info{sub_name} = $sub_name;
391 return wantarray() ? %call_info : \%call_info;
392}
393
394# Transform an argument to a function into a string.
395our $in_recurse;
396sub format_arg {
397 my $arg = shift;
398
399 if ( my $pack= ref($arg) ) {
400
401 # legitimate, let's not leak it.
402 if (!$in_recurse && _maybe_isa( $arg, 'UNIVERSAL' ) &&
403 do {
404 local $@;
405 local $in_recurse = 1;
406 local $SIG{__DIE__} = sub{};
407 eval {$arg->can('CARP_TRACE') }
408 })
409 {
410 return $arg->CARP_TRACE();
411 }
412 elsif (!$in_recurse &&
413 defined($RefArgFormatter) &&
414 do {
415 local $@;
416 local $in_recurse = 1;
417 local $SIG{__DIE__} = sub{};
418 eval {$arg = $RefArgFormatter->($arg); 1}
419 })
420 {
421 return $arg;
422 }
423 else
424 {
425 # Argument may be blessed into a class with overloading, and so
426 # might have an overloaded stringification. We don't want to
427 # risk getting the overloaded stringification, so we need to
428 # use _StrVal, our overload::StrVal()-equivalent.
429 return _StrVal $arg;
430 }
431 }
432 return "undef" if !defined($arg);
433 downgrade($arg, 1);
434 return $arg if !(UTF8_REGEXP_PROBLEM && is_utf8($arg)) &&
435 $arg =~ /\A-?[0-9]+(?:\.[0-9]*)?(?:[eE][-+]?[0-9]+)?\z/;
436 my $suffix = "";
437 if ( 2 < $MaxArgLen and $MaxArgLen < length($arg) ) {
438 substr ( $arg, $MaxArgLen - 3 ) = "";
439 $suffix = "...";
440 }
441 if(UTF8_REGEXP_PROBLEM && is_utf8($arg)) {
442 for(my $i = length($arg); $i--; ) {
443 my $c = substr($arg, $i, 1);
444 my $x = substr($arg, 0, 0); # work around bug on Perl 5.8.{1,2}
445 if($c eq "\"" || $c eq "\\" || $c eq "\$" || $c eq "\@") {
446 substr $arg, $i, 0, "\\";
447 next;
448 }
449 my $o = ord($c);
450 substr $arg, $i, 1, sprintf("\\x{%x}", $o)
451 unless is_safe_printable_codepoint($o);
452 }
453 } else {
454 $arg =~ s/([\"\\\$\@])/\\$1/g;
455 # This is all the ASCII printables spelled-out. It is portable to all
456 # Perl versions and platforms (such as EBCDIC). There are other more
457 # compact ways to do this, but may not work everywhere every version.
458 $arg =~ s/([^ !"#\$\%\&'()*+,\-.\/0123456789:;<=>?\@ABCDEFGHIJKLMNOPQRSTUVWXYZ\[\\\]^_`abcdefghijklmnopqrstuvwxyz\{|}~])/sprintf("\\x{%x}",ord($1))/eg;
459 }
460 downgrade($arg, 1);
461 return "\"".$arg."\"".$suffix;
462}
463
464sub Regexp::CARP_TRACE {
465 my $arg = "$_[0]";
466 downgrade($arg, 1);
467 if(UTF8_REGEXP_PROBLEM && is_utf8($arg)) {
468 for(my $i = length($arg); $i--; ) {
469 my $o = ord(substr($arg, $i, 1));
470 my $x = substr($arg, 0, 0); # work around bug on Perl 5.8.{1,2}
471 substr $arg, $i, 1, sprintf("\\x{%x}", $o)
472 unless is_safe_printable_codepoint($o);
473 }
474 } else {
475 # See comment in format_arg() about this same regex.
476 $arg =~ s/([^ !"#\$\%\&'()*+,\-.\/0123456789:;<=>?\@ABCDEFGHIJKLMNOPQRSTUVWXYZ\[\\\]^_`abcdefghijklmnopqrstuvwxyz\{|}~])/sprintf("\\x{%x}",ord($1))/eg;
477 }
478 downgrade($arg, 1);
479 my $suffix = "";
480 if($arg =~ /\A\(\?\^?([a-z]*)(?:-[a-z]*)?:(.*)\)\z/s) {
481 ($suffix, $arg) = ($1, $2);
482 }
483 if ( 2 < $MaxArgLen and $MaxArgLen < length($arg) ) {
484 substr ( $arg, $MaxArgLen - 3 ) = "";
485 $suffix = "...".$suffix;
486 }
487 return "qr($arg)$suffix";
488}
489
490# Takes an inheritance cache and a package and returns
491# an anon hash of known inheritances and anon array of
492# inheritances which consequences have not been figured
493# for.
494sub get_status {
495 my $cache = shift;
496 my $pkg = shift;
497 $cache->{$pkg} ||= [ { $pkg => $pkg }, [ trusts_directly($pkg) ] ];
498 return @{ $cache->{$pkg} };
499}
500
501# Takes the info from caller() and figures out the name of
502# the sub/require/eval
503sub get_subname {
504 my $info = shift;
505 if ( defined( $info->{evaltext} ) ) {
506 my $eval = $info->{evaltext};
507 if ( $info->{is_require} ) {
508 return "require $eval";
509 }
510 else {
511 $eval =~ s/([\\\'])/\\$1/g;
512 return "eval '" . str_len_trim( $eval, $MaxEvalLen ) . "'";
513 }
514 }
515
516 # this can happen on older perls when the sub (or the stash containing it)
517 # has been deleted
518 if ( !defined( $info->{sub} ) ) {
519 return '__ANON__::__ANON__';
520 }
521
522 return ( $info->{sub} eq '(eval)' ) ? 'eval {...}' : $info->{sub};
523}
524
525# Figures out what call (from the point of view of the caller)
526# the long error backtrace should start at.
527sub long_error_loc {
528 my $i;
529 my $lvl = $CarpLevel;
530 {
531 ++$i;
532 my $cgc = _cgc();
533 my @caller = $cgc ? $cgc->($i) : caller($i);
534 my $pkg = $caller[0];
535 unless ( defined($pkg) ) {
536
537 # This *shouldn't* happen.
538 if (%Internal) {
539 local %Internal;
540 $i = long_error_loc();
541 last;
542 }
543 elsif (defined $caller[2]) {
544 # this can happen when the stash has been deleted
545 # in that case, just assume that it's a reasonable place to
546 # stop (the file and line data will still be intact in any
547 # case) - the only issue is that we can't detect if the
548 # deleted package was internal (so don't do that then)
549 # -doy
550 redo unless 0 > --$lvl;
551 last;
552 }
553 else {
554 return 2;
555 }
556 }
557 redo if $CarpInternal{$pkg};
558 redo unless 0 > --$lvl;
559 redo if $Internal{$pkg};
560 }
561 return $i - 1;
562}
563
564sub longmess_heavy {
565 if ( ref( $_[0] ) ) { # don't break references as exceptions
566 return wantarray ? @_ : $_[0];
567 }
568 my $i = long_error_loc();
569 return ret_backtrace( $i, @_ );
570}
571
572
# spent 21µs within Carp::BEGIN@572 which was called: # once (21µs+0s) by diagnostics::BEGIN@186 at line 579
BEGIN {
57314µs if("$]" >= 5.017004) {
574 # The LAST_FH constant is a reference to the variable.
575115µs $Carp::{LAST_FH} = \eval '\${^LAST_FH}';
# spent 2µs executing statements in string eval
576 } else {
577 eval '*LAST_FH = sub () { 0 }';
578 }
5791522µs121µs}
# spent 21µs making 1 call to Carp::BEGIN@572
580
581# Returns a full stack backtrace starting from where it is
582# told.
583sub ret_backtrace {
584 my ( $i, @error ) = @_;
585 my $mess;
586 my $err = join '', @error;
587 $i++;
588
589 my $tid_msg = '';
590 if ( defined &threads::tid ) {
591 my $tid = threads->tid;
592 $tid_msg = " thread $tid" if $tid;
593 }
594
595 my %i = caller_info($i);
596 $mess = "$err at $i{file} line $i{line}$tid_msg";
597 if( $. ) {
598 # Use ${^LAST_FH} if available.
599 if (LAST_FH) {
600 if (${+LAST_FH}) {
601 $mess .= sprintf ", <%s> %s %d",
602 *${+LAST_FH}{NAME},
603 ($/ eq "\n" ? "line" : "chunk"), $.
604 }
605 }
606 else {
607 local $@ = '';
608 local $SIG{__DIE__};
609 eval {
610 CORE::die;
611 };
612 if($@ =~ /^Died at .*(, <.*?> (?:line|chunk) \d+).$/ ) {
613 $mess .= $1;
614 }
615 }
616 }
617 $mess .= "\.\n";
618
619 while ( my %i = caller_info( ++$i ) ) {
620 $mess .= "\t$i{sub_name} called at $i{file} line $i{line}$tid_msg\n";
621 }
622
623 return $mess;
624}
625
626sub ret_summary {
627 my ( $i, @error ) = @_;
628 my $err = join '', @error;
629 $i++;
630
631 my $tid_msg = '';
632 if ( defined &threads::tid ) {
633 my $tid = threads->tid;
634 $tid_msg = " thread $tid" if $tid;
635 }
636
637 my %i = caller_info($i);
638 return "$err at $i{file} line $i{line}$tid_msg\.\n";
639}
640
641sub short_error_loc {
642 # You have to create your (hash)ref out here, rather than defaulting it
643 # inside trusts *on a lexical*, as you want it to persist across calls.
644 # (You can default it on $_[2], but that gets messy)
645 my $cache = {};
646 my $i = 1;
647 my $lvl = $CarpLevel;
648 {
649 my $cgc = _cgc();
650 my $called = $cgc ? $cgc->($i) : caller($i);
651 $i++;
652 my $caller = $cgc ? $cgc->($i) : caller($i);
653
654 if (!defined($caller)) {
655 my @caller = $cgc ? $cgc->($i) : caller($i);
656 if (@caller) {
657 # if there's no package but there is other caller info, then
658 # the package has been deleted - treat this as a valid package
659 # in this case
660 redo if defined($called) && $CarpInternal{$called};
661 redo unless 0 > --$lvl;
662 last;
663 }
664 else {
665 return 0;
666 }
667 }
668 redo if $Internal{$caller};
669 redo if $CarpInternal{$caller};
670 redo if $CarpInternal{$called};
671 redo if trusts( $called, $caller, $cache );
672 redo if trusts( $caller, $called, $cache );
673 redo unless 0 > --$lvl;
674 }
675 return $i - 1;
676}
677
678sub shortmess_heavy {
679 return longmess_heavy(@_) if $Verbose;
680 return @_ if ref( $_[0] ); # don't break references as exceptions
681 my $i = short_error_loc();
682 if ($i) {
683 ret_summary( $i, @_ );
684 }
685 else {
686 longmess_heavy(@_);
687 }
688}
689
690# If a string is too long, trims it with ...
691sub str_len_trim {
692 my $str = shift;
693 my $max = shift || 0;
694 if ( 2 < $max and $max < length($str) ) {
695 substr( $str, $max - 3 ) = '...';
696 }
697 return $str;
698}
699
700# Takes two packages and an optional cache. Says whether the
701# first inherits from the second.
702#
703# Recursive versions of this have to work to avoid certain
704# possible endless loops, and when following long chains of
705# inheritance are less efficient.
706sub trusts {
707 my $child = shift;
708 my $parent = shift;
709 my $cache = shift;
710 my ( $known, $partial ) = get_status( $cache, $child );
711
712 # Figure out consequences until we have an answer
713 while ( @$partial and not exists $known->{$parent} ) {
714 my $anc = shift @$partial;
715 next if exists $known->{$anc};
716 $known->{$anc}++;
717 my ( $anc_knows, $anc_partial ) = get_status( $cache, $anc );
718 my @found = keys %$anc_knows;
719 @$known{@found} = ();
720 push @$partial, @$anc_partial;
721 }
722 return exists $known->{$parent};
723}
724
725# Takes a package and gives a list of those trusted directly
726sub trusts_directly {
727 my $class = shift;
728282µs215µs
# spent 11µs (6+5) within Carp::BEGIN@728 which was called: # once (6µs+5µs) by diagnostics::BEGIN@186 at line 728
no strict 'refs';
# spent 11µs making 1 call to Carp::BEGIN@728 # spent 5µs making 1 call to strict::unimport
729 my $stash = \%{"$class\::"};
730 for my $var (qw/ CARP_NOT ISA /) {
731 # Don't try using the variable until we know it exists,
732 # to avoid polluting the caller's namespace.
733 if ( $stash->{$var} && ref \$stash->{$var} eq 'GLOB'
734 && *{$stash->{$var}}{ARRAY} && @{$stash->{$var}} ) {
735 return @{$stash->{$var}}
736 }
737 }
738 return;
739}
740
7411500nsif(!defined($warnings::VERSION) ||
742324µs226µs
# spent 15µs (4+11) within Carp::BEGIN@742 which was called: # once (4µs+11µs) by diagnostics::BEGIN@186 at line 742
do { no warnings "numeric"; $warnings::VERSION < 1.03 }) {
# spent 15µs making 1 call to Carp::BEGIN@742 # spent 11µs making 1 call to warnings::unimport
743 # Very old versions of warnings.pm import from Carp. This can go
744 # wrong due to the circular dependency. If Carp is invoked before
745 # warnings, then Carp starts by loading warnings, then warnings
746 # tries to import from Carp, and gets nothing because Carp is in
747 # the process of loading and hasn't defined its import method yet.
748 # So we work around that by manually exporting to warnings here.
749258µs29µs
# spent 6µs (3+3) within Carp::BEGIN@749 which was called: # once (3µs+3µs) by diagnostics::BEGIN@186 at line 749
no strict "refs";
# spent 6µs making 1 call to Carp::BEGIN@749 # spent 3µs making 1 call to strict::unimport
750 *{"warnings::$_"} = \&$_ foreach @EXPORT;
751}
752
75318µs1;
754
755__END__
Report produced by the NYTProf 6.12 Perl profiler, developed by Tim Bunce based on work by Adam Kaplan and Salvador Fandiño García.