| Filename | /home/ss5/perl5/perlbrew/perls/tapper-perl/lib/5.16.3/x86_64-linux/DynaLoader.pm |
| Statements | Executed 167 statements in 1.82ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 4 | 4 | 4 | 226µs | 770µs | DynaLoader::bootstrap |
| 4 | 1 | 1 | 217µs | 217µs | DynaLoader::dl_load_file (xsub) |
| 8 | 2 | 1 | 103µs | 103µs | DynaLoader::CORE:subst (opcode) |
| 10 | 1 | 1 | 28µs | 28µs | DynaLoader::CORE:ftdir (opcode) |
| 4 | 1 | 1 | 18µs | 18µs | DynaLoader::dl_install_xsub (xsub) |
| 1 | 1 | 1 | 10µs | 21µs | DynaLoader::BEGIN@22 |
| 4 | 1 | 1 | 9µs | 9µs | DynaLoader::CORE:ftsize (opcode) |
| 4 | 1 | 1 | 8µs | 8µs | DynaLoader::CORE:ftfile (opcode) |
| 1 | 1 | 1 | 7µs | 7µs | DynaLoader::BEGIN@18 |
| 4 | 1 | 1 | 6µs | 6µs | DynaLoader::dl_find_symbol (xsub) |
| 4 | 1 | 1 | 5µs | 5µs | DynaLoader::dl_load_flags |
| 4 | 1 | 1 | 4µs | 4µs | DynaLoader::dl_undef_symbols (xsub) |
| 0 | 0 | 0 | 0s | 0s | DynaLoader::bootstrap_inherit |
| 0 | 0 | 0 | 0s | 0s | DynaLoader::croak |
| 0 | 0 | 0 | 0s | 0s | DynaLoader::dl_expandspec |
| 0 | 0 | 0 | 0s | 0s | DynaLoader::dl_find_symbol_anywhere |
| 0 | 0 | 0 | 0s | 0s | DynaLoader::dl_findfile |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | |||||
| 2 | # Generated from DynaLoader_pm.PL | ||||
| 3 | |||||
| 4 | package DynaLoader; | ||||
| 5 | |||||
| 6 | # And Gandalf said: 'Many folk like to know beforehand what is to | ||||
| 7 | # be set on the table; but those who have laboured to prepare the | ||||
| 8 | # feast like to keep their secret; for wonder makes the words of | ||||
| 9 | # praise louder.' | ||||
| 10 | |||||
| 11 | # (Quote from Tolkien suggested by Anno Siegel.) | ||||
| 12 | # | ||||
| 13 | # See pod text at end of file for documentation. | ||||
| 14 | # See also ext/DynaLoader/README in source tree for other information. | ||||
| 15 | # | ||||
| 16 | # Tim.Bunce@ig.co.uk, August 1994 | ||||
| 17 | |||||
| 18 | # spent 7µs within DynaLoader::BEGIN@18 which was called:
# once (7µs+0s) by Benchmark::Perl::Formance::BEGIN@12 at line 20 | ||||
| 19 | 1 | 5µs | $VERSION = '1.14'; | ||
| 20 | 1 | 15µs | 1 | 7µs | } # spent 7µs making 1 call to DynaLoader::BEGIN@18 |
| 21 | |||||
| 22 | 2 | 984µs | 2 | 33µs | # spent 21µs (10+12) within DynaLoader::BEGIN@22 which was called:
# once (10µs+12µs) by Benchmark::Perl::Formance::BEGIN@12 at line 22 # spent 21µs making 1 call to DynaLoader::BEGIN@22
# spent 12µs making 1 call to Config::import |
| 23 | |||||
| 24 | # enable debug/trace messages from DynaLoader perl code | ||||
| 25 | 1 | 1µs | $dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug; | ||
| 26 | |||||
| 27 | # | ||||
| 28 | # Flags to alter dl_load_file behaviour. Assigned bits: | ||||
| 29 | # 0x01 make symbols available for linking later dl_load_file's. | ||||
| 30 | # (only known to work on Solaris 2 using dlopen(RTLD_GLOBAL)) | ||||
| 31 | # (ignored under VMS; effect is built-in to image linking) | ||||
| 32 | # | ||||
| 33 | # This is called as a class method $module->dl_load_flags. The | ||||
| 34 | # definition here will be inherited and result on "default" loading | ||||
| 35 | # behaviour unless a sub-class of DynaLoader defines its own version. | ||||
| 36 | # | ||||
| 37 | |||||
| 38 | 4 | 9µs | # spent 5µs within DynaLoader::dl_load_flags which was called 4 times, avg 1µs/call:
# 4 times (5µs+0s) by DynaLoader::bootstrap at line 190, avg 1µs/call | ||
| 39 | |||||
| 40 | 1 | 11µs | 3 | 7µs | ($dl_dlext, $dl_so, $dlsrc) = @Config::Config{qw(dlext so dlsrc)}; # spent 7µs making 3 calls to Config::FETCH, avg 2µs/call |
| 41 | |||||
| 42 | |||||
| 43 | 1 | 200ns | $do_expand = 0; | ||
| 44 | |||||
| 45 | 1 | 700ns | @dl_require_symbols = (); # names of symbols we need | ||
| 46 | 1 | 200ns | @dl_resolve_using = (); # names of files to link with | ||
| 47 | 1 | 100ns | @dl_library_path = (); # path to look for files | ||
| 48 | |||||
| 49 | #XSLoader.pm may have added elements before we were required | ||||
| 50 | #@dl_shared_objects = (); # shared objects for symbols we have | ||||
| 51 | #@dl_librefs = (); # things we have loaded | ||||
| 52 | #@dl_modules = (); # Modules we have loaded | ||||
| 53 | |||||
| 54 | # This is a fix to support DLD's unfortunate desire to relink -lc | ||||
| 55 | 1 | 500ns | @dl_resolve_using = dl_findfile('-lc') if $dlsrc eq "dl_dld.xs"; | ||
| 56 | |||||
| 57 | # Initialise @dl_library_path with the 'standard' library path | ||||
| 58 | # for this platform as determined by Configure. | ||||
| 59 | |||||
| 60 | 1 | 5µs | 1 | 2µs | push(@dl_library_path, split(' ', $Config::Config{libpth})); # spent 2µs making 1 call to Config::FETCH |
| 61 | |||||
| 62 | |||||
| 63 | 1 | 2µs | 1 | 1µs | my $ldlibpthname = $Config::Config{ldlibpthname}; # spent 1µs making 1 call to Config::FETCH |
| 64 | 1 | 2µs | 1 | 1µs | my $ldlibpthname_defined = defined $Config::Config{ldlibpthname}; # spent 1µs making 1 call to Config::FETCH |
| 65 | 1 | 2µs | 1 | 2µs | my $pthsep = $Config::Config{path_sep}; # spent 2µs making 1 call to Config::FETCH |
| 66 | |||||
| 67 | # Add to @dl_library_path any extra directories we can gather from environment | ||||
| 68 | # during runtime. | ||||
| 69 | |||||
| 70 | 1 | 500ns | if ($ldlibpthname_defined && | ||
| 71 | exists $ENV{$ldlibpthname}) { | ||||
| 72 | push(@dl_library_path, split(/$pthsep/, $ENV{$ldlibpthname})); | ||||
| 73 | } | ||||
| 74 | |||||
| 75 | # E.g. HP-UX supports both its native SHLIB_PATH *and* LD_LIBRARY_PATH. | ||||
| 76 | |||||
| 77 | 1 | 200ns | if ($ldlibpthname_defined && | ||
| 78 | $ldlibpthname ne 'LD_LIBRARY_PATH' && | ||||
| 79 | exists $ENV{LD_LIBRARY_PATH}) { | ||||
| 80 | push(@dl_library_path, split(/$pthsep/, $ENV{LD_LIBRARY_PATH})); | ||||
| 81 | } | ||||
| 82 | |||||
| 83 | |||||
| 84 | # No prizes for guessing why we don't say 'bootstrap DynaLoader;' here. | ||||
| 85 | # NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB | ||||
| 86 | 1 | 400ns | boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) && | ||
| 87 | !defined(&dl_error); | ||||
| 88 | |||||
| 89 | 1 | 200ns | if ($dl_debug) { | ||
| 90 | print STDERR "DynaLoader.pm loaded (@INC, @dl_library_path)\n"; | ||||
| 91 | print STDERR "DynaLoader not linked into this perl\n" | ||||
| 92 | unless defined(&boot_DynaLoader); | ||||
| 93 | } | ||||
| 94 | |||||
| 95 | 1 | 14µs | 1; # End of main code | ||
| 96 | |||||
| 97 | |||||
| 98 | sub croak { require Carp; Carp::croak(@_) } | ||||
| 99 | |||||
| 100 | sub bootstrap_inherit { | ||||
| 101 | my $module = $_[0]; | ||||
| 102 | local *isa = *{"$module\::ISA"}; | ||||
| 103 | local @isa = (@isa, 'DynaLoader'); | ||||
| 104 | # Cannot goto due to delocalization. Will report errors on a wrong line? | ||||
| 105 | bootstrap(@_); | ||||
| 106 | } | ||||
| 107 | |||||
| 108 | # spent 770µs (226+544) within DynaLoader::bootstrap which was called 4 times, avg 192µs/call:
# once (59µs+144µs) by Data::OptList::BEGIN@10 at line 88 of Params/Util.pm
# once (48µs+150µs) by List::MoreUtils::BEGIN@9 at line 36 of List/MoreUtils.pm
# once (72µs+122µs) by Benchmark::Perl::Formance::BEGIN@12 at line 29 of Data/Structure/Util.pm
# once (47µs+127µs) by Benchmark::Perl::Formance::BEGIN@14 at line 66 of Time/HiRes.pm | ||||
| 109 | # use local vars to enable $module.bs script to edit values | ||||
| 110 | 4 | 4µs | local(@args) = @_; | ||
| 111 | 4 | 3µs | local($module) = $args[0]; | ||
| 112 | 4 | 2µs | local(@dirs, $file); | ||
| 113 | |||||
| 114 | 4 | 700ns | unless ($module) { | ||
| 115 | require Carp; | ||||
| 116 | Carp::confess("Usage: DynaLoader::bootstrap(module)"); | ||||
| 117 | } | ||||
| 118 | |||||
| 119 | # A common error on platforms which don't support dynamic loading. | ||||
| 120 | # Since it's fatal and potentially confusing we give a detailed message. | ||||
| 121 | 4 | 2µs | croak("Can't load module $module, dynamic loading not available in this perl.\n". | ||
| 122 | " (You may need to build a new perl executable which either supports\n". | ||||
| 123 | " dynamic loading or has the $module module statically linked into it.)\n") | ||||
| 124 | unless defined(&dl_load_file); | ||||
| 125 | |||||
| - - | |||||
| 128 | 4 | 8µs | my @modparts = split(/::/,$module); | ||
| 129 | 4 | 2µs | my $modfname = $modparts[-1]; | ||
| 130 | |||||
| 131 | # Some systems have restrictions on files names for DLL's etc. | ||||
| 132 | # mod2fname returns appropriate file base name (typically truncated) | ||||
| 133 | # It may also edit @modparts if required. | ||||
| 134 | 4 | 1µs | $modfname = &mod2fname(\@modparts) if defined &mod2fname; | ||
| 135 | |||||
| 136 | |||||
| 137 | |||||
| 138 | 4 | 5µs | my $modpname = join('/',@modparts); | ||
| 139 | |||||
| 140 | 4 | 800ns | print STDERR "DynaLoader::bootstrap for $module ", | ||
| 141 | "(auto/$modpname/$modfname.$dl_dlext)\n" | ||||
| 142 | if $dl_debug; | ||||
| 143 | |||||
| 144 | 4 | 4µs | foreach (@INC) { | ||
| 145 | |||||
| 146 | 10 | 6µs | my $dir = "$_/auto/$modpname"; | ||
| 147 | |||||
| 148 | 10 | 55µs | 10 | 28µs | next unless -d $dir; # skip over uninteresting directories # spent 28µs making 10 calls to DynaLoader::CORE:ftdir, avg 3µs/call |
| 149 | |||||
| 150 | # check for common cases to avoid autoload of dl_findfile | ||||
| 151 | 4 | 4µs | my $try = "$dir/$modfname.$dl_dlext"; | ||
| 152 | 4 | 22µs | 4 | 8µs | last if $file = ($do_expand) ? dl_expandspec($try) : ((-f $try) && $try); # spent 8µs making 4 calls to DynaLoader::CORE:ftfile, avg 2µs/call |
| 153 | |||||
| 154 | # no luck here, save dir for possible later dl_findfile search | ||||
| 155 | push @dirs, $dir; | ||||
| 156 | } | ||||
| 157 | # last resort, let dl_findfile have a go in all known locations | ||||
| 158 | 4 | 700ns | $file = dl_findfile(map("-L$_",@dirs,@INC), $modfname) unless $file; | ||
| 159 | |||||
| 160 | 4 | 700ns | croak("Can't locate loadable object for module $module in \@INC (\@INC contains: @INC)") | ||
| 161 | unless $file; # wording similar to error from 'require' | ||||
| 162 | |||||
| 163 | |||||
| 164 | 4 | 2µs | my $bootname = "boot_$module"; | ||
| 165 | 4 | 23µs | 4 | 10µs | $bootname =~ s/\W/_/g; # spent 10µs making 4 calls to DynaLoader::CORE:subst, avg 3µs/call |
| 166 | 4 | 4µs | @dl_require_symbols = ($bootname); | ||
| 167 | |||||
| 168 | # Execute optional '.bootstrap' perl script for this module. | ||||
| 169 | # The .bs file can be used to configure @dl_resolve_using etc to | ||||
| 170 | # match the needs of the individual module on this architecture. | ||||
| 171 | 4 | 1µs | my $bs = $file; | ||
| 172 | 4 | 100µs | 4 | 93µs | $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library # spent 93µs making 4 calls to DynaLoader::CORE:subst, avg 23µs/call |
| 173 | 4 | 17µs | 4 | 9µs | if (-s $bs) { # only read file if it's not empty # spent 9µs making 4 calls to DynaLoader::CORE:ftsize, avg 2µs/call |
| 174 | print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug; | ||||
| 175 | eval { do $bs; }; | ||||
| 176 | warn "$bs: $@\n" if $@; | ||||
| 177 | } | ||||
| 178 | |||||
| 179 | 4 | 900ns | my $boot_symbol_ref; | ||
| 180 | |||||
| 181 | |||||
| 182 | |||||
| 183 | # Many dynamic extension loading problems will appear to come from | ||||
| 184 | # this section of code: XYZ failed at line 123 of DynaLoader.pm. | ||||
| 185 | # Often these errors are actually occurring in the initialisation | ||||
| 186 | # C code of the extension XS file. Perl reports the error as being | ||||
| 187 | # in this perl code simply because this was the last perl code | ||||
| 188 | # it executed. | ||||
| 189 | |||||
| 190 | 4 | 249µs | 8 | 222µs | my $libref = dl_load_file($file, $module->dl_load_flags) or # spent 217µs making 4 calls to DynaLoader::dl_load_file, avg 54µs/call
# spent 5µs making 4 calls to DynaLoader::dl_load_flags, avg 1µs/call |
| 191 | croak("Can't load '$file' for module $module: ".dl_error()); | ||||
| 192 | |||||
| 193 | 4 | 4µs | push(@dl_librefs,$libref); # record loaded object | ||
| 194 | |||||
| 195 | 4 | 15µs | 4 | 4µs | my @unresolved = dl_undef_symbols(); # spent 4µs making 4 calls to DynaLoader::dl_undef_symbols, avg 950ns/call |
| 196 | 4 | 1µs | if (@unresolved) { | ||
| 197 | require Carp; | ||||
| 198 | Carp::carp("Undefined symbols present after loading $file: @unresolved\n"); | ||||
| 199 | } | ||||
| 200 | |||||
| 201 | 4 | 16µs | 4 | 6µs | $boot_symbol_ref = dl_find_symbol($libref, $bootname) or # spent 6µs making 4 calls to DynaLoader::dl_find_symbol, avg 2µs/call |
| 202 | croak("Can't find '$bootname' symbol in $file\n"); | ||||
| 203 | |||||
| 204 | 4 | 3µs | push(@dl_modules, $module); # record loaded module | ||
| 205 | |||||
| 206 | 4 | 30µs | 4 | 18µs | boot: # spent 18µs making 4 calls to DynaLoader::dl_install_xsub, avg 4µs/call |
| 207 | my $xs = dl_install_xsub("${module}::bootstrap", $boot_symbol_ref, $file); | ||||
| 208 | |||||
| 209 | # See comment block above | ||||
| 210 | |||||
| 211 | 4 | 2µs | push(@dl_shared_objects, $file); # record files loaded | ||
| 212 | |||||
| 213 | 4 | 180µs | 4 | 145µs | &$xs(@args); # spent 60µs making 1 call to List::MoreUtils::bootstrap
# spent 35µs making 1 call to Time::HiRes::bootstrap
# spent 28µs making 1 call to Data::Structure::Util::bootstrap
# spent 22µs making 1 call to Params::Util::bootstrap |
| 214 | } | ||||
| 215 | |||||
| 216 | sub dl_findfile { | ||||
| 217 | # Read ext/DynaLoader/DynaLoader.doc for detailed information. | ||||
| 218 | # This function does not automatically consider the architecture | ||||
| 219 | # or the perl library auto directories. | ||||
| 220 | my (@args) = @_; | ||||
| 221 | my (@dirs, $dir); # which directories to search | ||||
| 222 | my (@found); # full paths to real files we have found | ||||
| 223 | #my $dl_ext= 'so'; # $Config::Config{'dlext'} suffix for perl extensions | ||||
| 224 | #my $dl_so = 'so'; # $Config::Config{'so'} suffix for shared libraries | ||||
| 225 | |||||
| 226 | print STDERR "dl_findfile(@args)\n" if $dl_debug; | ||||
| 227 | |||||
| 228 | # accumulate directories but process files as they appear | ||||
| 229 | arg: foreach(@args) { | ||||
| 230 | # Special fast case: full filepath requires no search | ||||
| 231 | |||||
| 232 | |||||
| 233 | if (m:/: && -f $_) { | ||||
| 234 | push(@found,$_); | ||||
| 235 | last arg unless wantarray; | ||||
| 236 | next; | ||||
| 237 | } | ||||
| 238 | |||||
| 239 | |||||
| 240 | # Deal with directories first: | ||||
| 241 | # Using a -L prefix is the preferred option (faster and more robust) | ||||
| 242 | if (m:^-L:) { s/^-L//; push(@dirs, $_); next; } | ||||
| 243 | |||||
| 244 | # Otherwise we try to try to spot directories by a heuristic | ||||
| 245 | # (this is a more complicated issue than it first appears) | ||||
| 246 | if (m:/: && -d $_) { push(@dirs, $_); next; } | ||||
| 247 | |||||
| 248 | |||||
| 249 | |||||
| 250 | # Only files should get this far... | ||||
| 251 | my(@names, $name); # what filenames to look for | ||||
| 252 | if (m:-l: ) { # convert -lname to appropriate library name | ||||
| 253 | s/-l//; | ||||
| 254 | push(@names,"lib$_.$dl_so"); | ||||
| 255 | push(@names,"lib$_.a"); | ||||
| 256 | } else { # Umm, a bare name. Try various alternatives: | ||||
| 257 | # these should be ordered with the most likely first | ||||
| 258 | push(@names,"$_.$dl_dlext") unless m/\.$dl_dlext$/o; | ||||
| 259 | push(@names,"$_.$dl_so") unless m/\.$dl_so$/o; | ||||
| 260 | |||||
| 261 | push(@names,"lib$_.$dl_so") unless m:/:; | ||||
| 262 | push(@names,"$_.a") if !m/\.a$/ and $dlsrc eq "dl_dld.xs"; | ||||
| 263 | push(@names, $_); | ||||
| 264 | } | ||||
| 265 | my $dirsep = '/'; | ||||
| 266 | |||||
| 267 | foreach $dir (@dirs, @dl_library_path) { | ||||
| 268 | next unless -d $dir; | ||||
| 269 | |||||
| 270 | foreach $name (@names) { | ||||
| 271 | my($file) = "$dir$dirsep$name"; | ||||
| 272 | print STDERR " checking in $dir for $name\n" if $dl_debug; | ||||
| 273 | $file = ($do_expand) ? dl_expandspec($file) : (-f $file && $file); | ||||
| 274 | #$file = _check_file($file); | ||||
| 275 | if ($file) { | ||||
| 276 | push(@found, $file); | ||||
| 277 | next arg; # no need to look any further | ||||
| 278 | } | ||||
| 279 | } | ||||
| 280 | } | ||||
| 281 | } | ||||
| 282 | if ($dl_debug) { | ||||
| 283 | foreach(@dirs) { | ||||
| 284 | print STDERR " dl_findfile ignored non-existent directory: $_\n" unless -d $_; | ||||
| 285 | } | ||||
| 286 | print STDERR "dl_findfile found: @found\n"; | ||||
| 287 | } | ||||
| 288 | return $found[0] unless wantarray; | ||||
| 289 | @found; | ||||
| 290 | } | ||||
| 291 | |||||
| - - | |||||
| 294 | sub dl_expandspec { | ||||
| 295 | my($spec) = @_; | ||||
| 296 | # Optional function invoked if DynaLoader.pm sets $do_expand. | ||||
| 297 | # Most systems do not require or use this function. | ||||
| 298 | # Some systems may implement it in the dl_*.xs file in which case | ||||
| 299 | # this Perl version should be excluded at build time. | ||||
| 300 | |||||
| 301 | # This function is designed to deal with systems which treat some | ||||
| 302 | # 'filenames' in a special way. For example VMS 'Logical Names' | ||||
| 303 | # (something like unix environment variables - but different). | ||||
| 304 | # This function should recognise such names and expand them into | ||||
| 305 | # full file paths. | ||||
| 306 | # Must return undef if $spec is invalid or file does not exist. | ||||
| 307 | |||||
| 308 | my $file = $spec; # default output to input | ||||
| 309 | |||||
| 310 | return undef unless -f $file; | ||||
| 311 | print STDERR "dl_expandspec($spec) => $file\n" if $dl_debug; | ||||
| 312 | $file; | ||||
| 313 | } | ||||
| 314 | |||||
| 315 | sub dl_find_symbol_anywhere | ||||
| 316 | { | ||||
| 317 | my $sym = shift; | ||||
| 318 | my $libref; | ||||
| 319 | foreach $libref (@dl_librefs) { | ||||
| 320 | my $symref = dl_find_symbol($libref,$sym); | ||||
| 321 | return $symref if $symref; | ||||
| 322 | } | ||||
| 323 | return undef; | ||||
| 324 | } | ||||
| 325 | |||||
| 326 | __END__ | ||||
# spent 28µs within DynaLoader::CORE:ftdir which was called 10 times, avg 3µs/call:
# 10 times (28µs+0s) by DynaLoader::bootstrap at line 148, avg 3µs/call | |||||
# spent 8µs within DynaLoader::CORE:ftfile which was called 4 times, avg 2µs/call:
# 4 times (8µs+0s) by DynaLoader::bootstrap at line 152, avg 2µs/call | |||||
# spent 9µs within DynaLoader::CORE:ftsize which was called 4 times, avg 2µs/call:
# 4 times (9µs+0s) by DynaLoader::bootstrap at line 173, avg 2µs/call | |||||
sub DynaLoader::CORE:subst; # opcode | |||||
# spent 6µs within DynaLoader::dl_find_symbol which was called 4 times, avg 2µs/call:
# 4 times (6µs+0s) by DynaLoader::bootstrap at line 201, avg 2µs/call | |||||
# spent 18µs within DynaLoader::dl_install_xsub which was called 4 times, avg 4µs/call:
# 4 times (18µs+0s) by DynaLoader::bootstrap at line 206, avg 4µs/call | |||||
# spent 217µs within DynaLoader::dl_load_file which was called 4 times, avg 54µs/call:
# 4 times (217µs+0s) by DynaLoader::bootstrap at line 190, avg 54µs/call | |||||
# spent 4µs within DynaLoader::dl_undef_symbols which was called 4 times, avg 950ns/call:
# 4 times (4µs+0s) by DynaLoader::bootstrap at line 195, avg 950ns/call |