| File | /usr/local/lib/perl5/5.10.1/AutoLoader.pm |
| Statements Executed | 55 |
| Statement Execution Time | 1.91ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 2 | 2 | 2 | 1.01ms | 1.06ms | AutoLoader::import |
| 2 | 1 | 2 | 25µs | 25µs | AutoLoader::CORE:regcomp (opcode) |
| 1 | 1 | 1 | 17µs | 17µs | AutoLoader::BEGIN@4 |
| 4 | 2 | 2 | 16µs | 16µs | AutoLoader::CORE:subst (opcode) |
| 1 | 1 | 1 | 15µs | 18µs | AutoLoader::BEGIN@3 |
| 1 | 1 | 1 | 8µs | 25µs | AutoLoader::BEGIN@30 |
| 1 | 1 | 1 | 8µs | 19µs | AutoLoader::BEGIN@186 |
| 1 | 1 | 1 | 7µs | 18µs | AutoLoader::BEGIN@138 |
| 1 | 1 | 1 | 7µs | 7µs | AutoLoader::BEGIN@13 |
| 4 | 1 | 2 | 4µs | 4µs | AutoLoader::CORE:substcont (opcode) |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::AUTOLOAD |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::__ANON__[:31] |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::find_filename |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::unimport |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package AutoLoader; | ||||
| 2 | |||||
| 3 | 3 | 22µs | 2 | 22µs | # spent 18µs (15+3) within AutoLoader::BEGIN@3 which was called
# once (15µs+3µs) by base::import at line 3 # spent 18µs making 1 call to AutoLoader::BEGIN@3
# spent 3µs making 1 call to strict::import |
| 4 | 3 | 90µs | 1 | 17µs | # spent 17µs within AutoLoader::BEGIN@4 which was called
# once (17µs+0s) by base::import at line 4 # spent 17µs making 1 call to AutoLoader::BEGIN@4 |
| 5 | |||||
| 6 | 1 | 200ns | our($VERSION, $AUTOLOAD); | ||
| 7 | |||||
| 8 | 1 | 200ns | my $is_dosish; | ||
| 9 | 1 | 0s | my $is_epoc; | ||
| 10 | 1 | 0s | my $is_vms; | ||
| 11 | 1 | 0s | my $is_macos; | ||
| 12 | |||||
| 13 | # spent 7µs within AutoLoader::BEGIN@13 which was called
# once (7µs+0s) by base::import at line 19 | ||||
| 14 | 5 | 7µs | $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'; | ||||
| 19 | 1 | 67µs | 1 | 7µs | } # spent 7µs making 1 call to AutoLoader::BEGIN@13 |
| 20 | |||||
| 21 | AUTOLOAD { | ||||
| 22 | my $sub = $AUTOLOAD; | ||||
| 23 | my $filename = AutoLoader::find_filename( $sub ); | ||||
| 24 | |||||
| 25 | my $save = $@; | ||||
| 26 | local $!; # Do not munge the value. | ||||
| 27 | eval { local $SIG{__DIE__}; require $filename }; | ||||
| 28 | if ($@) { | ||||
| 29 | if (substr($sub,-9) eq '::DESTROY') { | ||||
| 30 | 3 | 415µs | 2 | 42µs | # spent 25µs (8+17) within AutoLoader::BEGIN@30 which was called
# once (8µs+17µs) by base::import at line 30 # spent 25µs making 1 call to AutoLoader::BEGIN@30
# spent 17µs making 1 call to strict::unimport |
| 31 | *$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; | ||||
| 52 | } | ||||
| 53 | |||||
| 54 | sub find_filename { | ||||
| 55 | 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 $INC{Getopt/Long.pm} is | ||||
| 67 | # 'lib/Getopt/Long.pm', and we want to require | ||||
| 68 | # 'auto/Getopt/Long/GetOptions.al' (without the leading 'lib'). | ||||
| 69 | # In this case, we simple prepend the 'auto/' and let the | ||||
| 70 | # C<require> take care of the searching for us. | ||||
| 71 | |||||
| 72 | my ($pkg,$func) = ($sub =~ /(.*)::([^:]+)$/); | ||||
| 73 | $pkg =~ s#::#/#g; | ||||
| 74 | if (defined($filename = $INC{"$pkg.pm"})) { | ||||
| 75 | 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 | ||||
| 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 | |||||
| 90 | if (defined $filename and -r $filename) { | ||||
| 91 | unless ($filename =~ m|^/|s) { | ||||
| 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 1.06ms (1.01+46µs) within AutoLoader::import which was called 2 times, avg 530µs/call:
# once (908µs+23µs) by Storable::BEGIN@22 at line 22 of Storable.pm
# once (105µs+23µs) by Compress::Raw::Zlib::BEGIN@6 at line 6 of Compress/Raw/Zlib.pm | ||||
| 129 | 28 | 1.05ms | my $pkg = shift; | ||
| 130 | my $callpkg = caller; | ||||
| 131 | |||||
| 132 | # | ||||
| 133 | # Export symbols, but not by accident of inheritance. | ||||
| 134 | # | ||||
| 135 | |||||
| 136 | if ($pkg eq 'AutoLoader') { | ||||
| 137 | if ( @_ and $_[0] =~ /^&?AUTOLOAD$/ ) { | ||||
| 138 | 3 | 176µs | 2 | 29µs | # spent 18µs (7+11) within AutoLoader::BEGIN@138 which was called
# once (7µs+11µs) by base::import at line 138 # spent 18µs 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 6µs making 2 calls to AutoLoader::CORE:subst, avg 3µs/call | ||||
| 156 | my $path = $INC{$calldir . '.pm'}; | ||||
| 157 | 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 $replaced_okay; | ||||
| 162 | if ($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 25µs making 2 calls to AutoLoader::CORE:regcomp, avg 12µs/call
# spent 11µs making 2 calls to AutoLoader::CORE:subst, avg 5µs/call
# spent 4µs making 4 calls to AutoLoader::CORE:substcont, avg 1µs/call | ||||
| 167 | } | ||||
| 168 | |||||
| 169 | 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 | |||||
| 183 | sub unimport { | ||||
| 184 | my $callpkg = caller; | ||||
| 185 | |||||
| 186 | 3 | 81µs | 2 | 30µs | # spent 19µs (8+11) within AutoLoader::BEGIN@186 which was called
# once (8µs+11µs) by base::import at line 186 # spent 19µs making 1 call to AutoLoader::BEGIN@186
# spent 11µs 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 | |||||
| 195 | 1 | 5µs | 1; | ||
| 196 | |||||
| 197 | __END__ | ||||
| 198 | |||||
| 199 | =head1 NAME | ||||
| 200 | |||||
| 201 | AutoLoader - 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 | |||||
| 218 | The B<AutoLoader> module works with the B<AutoSplit> module and the | ||||
| 219 | C<__END__> token to defer the loading of some subroutines until they are | ||||
| 220 | used rather than loading them all at once. | ||||
| 221 | |||||
| 222 | To use B<AutoLoader>, the author of a module has to place the | ||||
| 223 | definitions of subroutines to be autoloaded after an C<__END__> token. | ||||
| 224 | (See L<perldata>.) The B<AutoSplit> module can then be run manually to | ||||
| 225 | extract the definitions into individual files F<auto/funcname.al>. | ||||
| 226 | |||||
| 227 | B<AutoLoader> implements an AUTOLOAD subroutine. When an undefined | ||||
| 228 | subroutine in is called in a client module of B<AutoLoader>, | ||||
| 229 | B<AutoLoader>'s AUTOLOAD subroutine attempts to locate the subroutine in a | ||||
| 230 | file with a name related to the location of the file from which the | ||||
| 231 | client module was read. As an example, if F<POSIX.pm> is located in | ||||
| 232 | F</usr/local/lib/perl5/POSIX.pm>, B<AutoLoader> will look for perl | ||||
| 233 | subroutines B<POSIX> in F</usr/local/lib/perl5/auto/POSIX/*.al>, where | ||||
| 234 | the C<.al> file has the same name as the subroutine, sans package. If | ||||
| 235 | such a file exists, AUTOLOAD will read and evaluate it, | ||||
| 236 | thus (presumably) defining the needed subroutine. AUTOLOAD will then | ||||
| 237 | C<goto> the newly defined subroutine. | ||||
| 238 | |||||
| 239 | Once this process completes for a given function, it is defined, so | ||||
| 240 | future calls to the subroutine will bypass the AUTOLOAD mechanism. | ||||
| 241 | |||||
| 242 | =head2 Subroutine Stubs | ||||
| 243 | |||||
| 244 | In order for object method lookup and/or prototype checking to operate | ||||
| 245 | correctly even when methods have not yet been defined it is necessary to | ||||
| 246 | "forward declare" each subroutine (as in C<sub NAME;>). See | ||||
| 247 | L<perlsub/"SYNOPSIS">. Such forward declaration creates "subroutine | ||||
| 248 | stubs", which are place holders with no code. | ||||
| 249 | |||||
| 250 | The AutoSplit and B<AutoLoader> modules automate the creation of forward | ||||
| 251 | declarations. The AutoSplit module creates an 'index' file containing | ||||
| 252 | forward declarations of all the AutoSplit subroutines. When the | ||||
| 253 | AutoLoader module is 'use'd it loads these declarations into its callers | ||||
| 254 | package. | ||||
| 255 | |||||
| 256 | Because of this mechanism it is important that B<AutoLoader> is always | ||||
| 257 | C<use>d and not C<require>d. | ||||
| 258 | |||||
| 259 | =head2 Using B<AutoLoader>'s AUTOLOAD Subroutine | ||||
| 260 | |||||
| 261 | In order to use B<AutoLoader>'s AUTOLOAD subroutine you I<must> | ||||
| 262 | explicitly import it: | ||||
| 263 | |||||
| 264 | use AutoLoader 'AUTOLOAD'; | ||||
| 265 | |||||
| 266 | =head2 Overriding B<AutoLoader>'s AUTOLOAD Subroutine | ||||
| 267 | |||||
| 268 | Some modules, mainly extensions, provide their own AUTOLOAD subroutines. | ||||
| 269 | They typically need to check for some special cases (such as constants) | ||||
| 270 | and then fallback to B<AutoLoader>'s AUTOLOAD for the rest. | ||||
| 271 | |||||
| 272 | Such modules should I<not> import B<AutoLoader>'s AUTOLOAD subroutine. | ||||
| 273 | Instead, they should define their own AUTOLOAD subroutines along these | ||||
| 274 | lines: | ||||
| 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 | |||||
| 296 | If any module's own AUTOLOAD subroutine has no need to fallback to the | ||||
| 297 | AutoLoader's AUTOLOAD subroutine (because it doesn't have any AutoSplit | ||||
| 298 | subroutines), then that module should not use B<AutoLoader> at all. | ||||
| 299 | |||||
| 300 | =head2 Package Lexicals | ||||
| 301 | |||||
| 302 | Package lexicals declared with C<my> in the main block of a package | ||||
| 303 | using B<AutoLoader> will not be visible to auto-loaded subroutines, due to | ||||
| 304 | the fact that the given scope ends at the C<__END__> marker. A module | ||||
| 305 | using such variables as package globals will not work properly under the | ||||
| 306 | B<AutoLoader>. | ||||
| 307 | |||||
| 308 | The C<vars> pragma (see L<perlmod/"vars">) may be used in such | ||||
| 309 | situations as an alternative to explicitly qualifying all globals with | ||||
| 310 | the package namespace. Variables pre-declared with this pragma will be | ||||
| 311 | visible to any autoloaded routines (but will not be invisible outside | ||||
| 312 | the package, unfortunately). | ||||
| 313 | |||||
| 314 | =head2 Not Using AutoLoader | ||||
| 315 | |||||
| 316 | You can stop using AutoLoader by simply | ||||
| 317 | |||||
| 318 | no AutoLoader; | ||||
| 319 | |||||
| 320 | =head2 B<AutoLoader> vs. B<SelfLoader> | ||||
| 321 | |||||
| 322 | The B<AutoLoader> is similar in purpose to B<SelfLoader>: both delay the | ||||
| 323 | loading of subroutines. | ||||
| 324 | |||||
| 325 | B<SelfLoader> uses the C<__DATA__> marker rather than C<__END__>. | ||||
| 326 | While this avoids the use of a hierarchy of disk files and the | ||||
| 327 | associated open/close for each routine loaded, B<SelfLoader> suffers a | ||||
| 328 | startup speed disadvantage in the one-time parsing of the lines after | ||||
| 329 | C<__DATA__>, after which routines are cached. B<SelfLoader> can also | ||||
| 330 | handle multiple packages in a file. | ||||
| 331 | |||||
| 332 | B<AutoLoader> only reads code as it is requested, and in many cases | ||||
| 333 | should be faster, but requires a mechanism like B<AutoSplit> be used to | ||||
| 334 | create the individual files. L<ExtUtils::MakeMaker> will invoke | ||||
| 335 | B<AutoSplit> automatically if B<AutoLoader> is used in a module source | ||||
| 336 | file. | ||||
| 337 | |||||
| 338 | =head1 CAVEATS | ||||
| 339 | |||||
| 340 | AutoLoaders prior to Perl 5.002 had a slightly different interface. Any | ||||
| 341 | old modules which use B<AutoLoader> should be changed to the new calling | ||||
| 342 | style. Typically this just means changing a require to a use, adding | ||||
| 343 | the explicit C<'AUTOLOAD'> import if needed, and removing B<AutoLoader> | ||||
| 344 | from C<@ISA>. | ||||
| 345 | |||||
| 346 | On systems with restrictions on file name length, the file corresponding | ||||
| 347 | to a subroutine may have a shorter name that the routine itself. This | ||||
| 348 | can lead to conflicting file names. The I<AutoSplit> package warns of | ||||
| 349 | these potential conflicts when used to split a module. | ||||
| 350 | |||||
| 351 | AutoLoader may fail to find the autosplit files (or even find the wrong | ||||
| 352 | ones) in cases where C<@INC> contains relative paths, B<and> the program | ||||
| 353 | does C<chdir>. | ||||
| 354 | |||||
| 355 | =head1 SEE ALSO | ||||
| 356 | |||||
| 357 | L<SelfLoader> - an autoloader that doesn't use external files. | ||||
| 358 | |||||
| 359 | =head1 AUTHOR | ||||
| 360 | |||||
| 361 | C<AutoLoader> is maintained by the perl5-porters. Please direct | ||||
| 362 | any questions to the canonical mailing list. Anything that | ||||
| 363 | is applicable to the CPAN release can be sent to its maintainer, | ||||
| 364 | though. | ||||
| 365 | |||||
| 366 | Author and Maintainer: The Perl5-Porters <perl5-porters@perl.org> | ||||
| 367 | |||||
| 368 | Maintainer of the CPAN release: Steffen Mueller <smueller@cpan.org> | ||||
| 369 | |||||
| 370 | =head1 COPYRIGHT AND LICENSE | ||||
| 371 | |||||
| 372 | This package has been part of the perl core since the first release | ||||
| 373 | of perl5. It has been released separately to CPAN so older installations | ||||
| 374 | can benefit from bug fixes. | ||||
| 375 | |||||
| 376 | This 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 25µs within AutoLoader::CORE:regcomp which was called 2 times, avg 12µs/call:
# 2 times (25µs+0s) by AutoLoader::import at line 166 of AutoLoader.pm, avg 12µs/call | |||||
# spent 16µs within AutoLoader::CORE:subst which was called 4 times, avg 4µs/call:
# 2 times (11µs+0s) by AutoLoader::import at line 166 of AutoLoader.pm, avg 5µs/call
# 2 times (6µs+0s) by AutoLoader::import at line 155 of AutoLoader.pm, avg 3µs/call | |||||
# spent 4µs within AutoLoader::CORE:substcont which was called 4 times, avg 1µs/call:
# 4 times (4µs+0s) by AutoLoader::import at line 166 of AutoLoader.pm, avg 1µs/call |