| Filename | /usr/lib/perl/5.10/XSLoader.pm |
| Statements | Executed 0 statements in 32µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 6 | 6 | 6 | 2.14ms | 2.20ms | XSLoader::load |
| 0 | 0 | 0 | 0s | 0s | XSLoader::bootstrap_inherit |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | # Generated from XSLoader.pm.PL (resolved %Config::Config value) | ||||
| 2 | |||||
| 3 | package XSLoader; | ||||
| 4 | |||||
| 5 | $VERSION = "0.10"; | ||||
| 6 | |||||
| 7 | #use strict; | ||||
| 8 | |||||
| 9 | # enable debug/trace messages from DynaLoader perl code | ||||
| 10 | # $dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug; | ||||
| 11 | |||||
| 12 | my $dl_dlext = 'so'; | ||||
| 13 | |||||
| 14 | package DynaLoader; | ||||
| 15 | |||||
| 16 | # No prizes for guessing why we don't say 'bootstrap DynaLoader;' here. | ||||
| 17 | # NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB | ||||
| 18 | boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) && | ||||
| 19 | !defined(&dl_error); | ||||
| 20 | package XSLoader; | ||||
| 21 | |||||
| 22 | # spent 2.20ms (2.14+60µs) within XSLoader::load which was called 6 times, avg 367µs/call:
# once (699µs+0s) by MARC::Charset::Table::BEGIN@36 at line 36 of POSIX.pm
# once (334µs+60µs) by MARC::Charset::BEGIN@11 at line 10 of Encode.pm
# once (288µs+0s) by Fcntl::BEGIN@159 at line 160 of Fcntl.pm
# once (281µs+0s) by IO::Handle::BEGIN@9 at line 11 of IO.pm
# once (281µs+0s) by MARC::File::SAX::BEGIN@12 at line 36 of Data/Dumper.pm
# once (259µs+0s) by MARC::Charset::Table::BEGIN@37 at line 12 of SDBM_File.pm | ||||
| 23 | package DynaLoader; | ||||
| 24 | |||||
| 25 | die q{XSLoader::load('Your::Module', $Your::Module::VERSION)} unless @_; | ||||
| 26 | |||||
| 27 | my($module) = $_[0]; | ||||
| 28 | |||||
| 29 | # work with static linking too | ||||
| 30 | my $boots = "$module\::bootstrap"; | ||||
| 31 | goto &$boots if defined &$boots; | ||||
| 32 | |||||
| 33 | goto retry unless $module and defined &dl_load_file; | ||||
| 34 | |||||
| 35 | my @modparts = split(/::/,$module); | ||||
| 36 | my $modfname = $modparts[-1]; | ||||
| 37 | |||||
| 38 | my $modpname = join('/',@modparts); | ||||
| 39 | my $modlibname = (caller())[1]; | ||||
| 40 | my $c = @modparts; | ||||
| 41 | $modlibname =~ s,[\\/][^\\/]+$,, while $c--; # Q&D basename | ||||
| 42 | my $file = "$modlibname/auto/$modpname/$modfname.$dl_dlext"; | ||||
| 43 | |||||
| 44 | # print STDERR "XSLoader::load for $module ($file)\n" if $dl_debug; | ||||
| 45 | |||||
| 46 | my $bs = $file; | ||||
| 47 | $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library | ||||
| 48 | |||||
| 49 | if (-s $bs) { # only read file if it's not empty | ||||
| 50 | # print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug; | ||||
| 51 | eval { do $bs; }; | ||||
| 52 | warn "$bs: $@\n" if $@; | ||||
| 53 | } | ||||
| 54 | |||||
| 55 | goto retry if not -f $file or -s $bs; | ||||
| 56 | |||||
| 57 | my $bootname = "boot_$module"; | ||||
| 58 | $bootname =~ s/\W/_/g; | ||||
| 59 | @DynaLoader::dl_require_symbols = ($bootname); | ||||
| 60 | |||||
| 61 | my $boot_symbol_ref; | ||||
| 62 | |||||
| 63 | # Many dynamic extension loading problems will appear to come from | ||||
| 64 | # this section of code: XYZ failed at line 123 of DynaLoader.pm. | ||||
| 65 | # Often these errors are actually occurring in the initialisation | ||||
| 66 | # C code of the extension XS file. Perl reports the error as being | ||||
| 67 | # in this perl code simply because this was the last perl code | ||||
| 68 | # it executed. | ||||
| 69 | |||||
| 70 | my $libref = dl_load_file($file, 0) or do { | ||||
| 71 | require Carp; | ||||
| 72 | Carp::croak("Can't load '$file' for module $module: " . dl_error()); | ||||
| 73 | }; | ||||
| 74 | push(@DynaLoader::dl_librefs,$libref); # record loaded object | ||||
| 75 | |||||
| 76 | my @unresolved = dl_undef_symbols(); | ||||
| 77 | if (@unresolved) { | ||||
| 78 | require Carp; | ||||
| 79 | Carp::carp("Undefined symbols present after loading $file: @unresolved\n"); | ||||
| 80 | } | ||||
| 81 | |||||
| 82 | $boot_symbol_ref = dl_find_symbol($libref, $bootname) or do { | ||||
| 83 | require Carp; | ||||
| 84 | Carp::croak("Can't find '$bootname' symbol in $file\n"); | ||||
| 85 | }; | ||||
| 86 | |||||
| 87 | push(@DynaLoader::dl_modules, $module); # record loaded module | ||||
| 88 | |||||
| 89 | boot: | ||||
| 90 | my $xs = dl_install_xsub($boots, $boot_symbol_ref, $file); | ||||
| 91 | |||||
| 92 | # See comment block above | ||||
| 93 | push(@DynaLoader::dl_shared_objects, $file); # record files loaded | ||||
| 94 | 1 | 32µs | 4 | 60µs | return &$xs(@_); # spent 60µs making 4 calls to Encode::define_encoding, avg 15µs/call |
| 95 | |||||
| 96 | retry: | ||||
| 97 | my $bootstrap_inherit = DynaLoader->can('bootstrap_inherit') || | ||||
| 98 | XSLoader->can('bootstrap_inherit'); | ||||
| 99 | goto &$bootstrap_inherit; | ||||
| 100 | } | ||||
| 101 | |||||
| 102 | # Versions of DynaLoader prior to 5.6.0 don't have this function. | ||||
| 103 | sub bootstrap_inherit { | ||||
| 104 | package DynaLoader; | ||||
| 105 | |||||
| 106 | my $module = $_[0]; | ||||
| 107 | local *DynaLoader::isa = *{"$module\::ISA"}; | ||||
| 108 | local @DynaLoader::isa = (@DynaLoader::isa, 'DynaLoader'); | ||||
| 109 | # Cannot goto due to delocalization. Will report errors on a wrong line? | ||||
| 110 | require DynaLoader; | ||||
| 111 | DynaLoader::bootstrap(@_); | ||||
| 112 | } | ||||
| 113 | |||||
| 114 | 1; | ||||
| 115 | |||||
| 116 | __END__ | ||||
| 117 |