JezK
Edit File: XSLoader.pm
# Generated from XSLoader_pm.PL (resolved %Config::Config value) # This file is unique for every OS use strict; no strict 'refs'; package XSLoader; our $VERSION = "0.31"; # remember to update version in POD! package DynaLoader; # No prizes for guessing why we don't say 'bootstrap DynaLoader;' here. # NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) && !defined(&dl_error); package XSLoader; sub load { package DynaLoader; my ($caller, $modlibname) = caller(); my $module = $caller; if (@_) { $module = $_[0]; } else { $_[0] = $module; } # work with static linking too my $boots = "$module\::bootstrap"; goto &$boots if defined &$boots; goto \&XSLoader::bootstrap_inherit unless $module and defined &dl_load_file; my @modparts = split(/::/,$module); my $modfname = $modparts[-1]; my $modfname_orig = $modfname; # For .bs file search my $modpname = join('/',@modparts); my $c = () = split(/::/,$caller,-1); $modlibname =~ s,[\\/][^\\/]+$,, while $c--; # Q&D basename # Does this look like a relative path? if ($modlibname !~ m{^/}) { # Someone may have a #line directive that changes the file name, or # may be calling XSLoader::load from inside a string eval. We cer- # tainly do not want to go loading some code that is not in @INC, # as it could be untrusted. # # We could just fall back to DynaLoader here, but then the rest of # this function would go untested in the perl core, since all @INC # paths are relative during testing. That would be a time bomb # waiting to happen, since bugs could be introduced into the code. # # So look through @INC to see if $modlibname is in it. A rela- # tive $modlibname is not a common occurrence, so this block is # not hot code. FOUND: { for (@INC) { if ($_ eq $modlibname) { last FOUND; } } # Not found. Fall back to DynaLoader. goto \&XSLoader::bootstrap_inherit; } } my $file = "$modlibname/auto/$modpname/$modfname.so"; # print STDERR "XSLoader::load for $module ($file)\n" if $dl_debug; # N.B. The .bs file does not following the naming convention used # by mod2fname, so use the unedited version of the name. my $bs = "$modlibname/auto/$modpname/$modfname_orig.bs"; # This calls DynaLoader::bootstrap, which will load the .bs file if present goto \&XSLoader::bootstrap_inherit if not -f $file or -s $bs; my $bootname = "boot_$module"; $bootname =~ s/\W/_/g; @DynaLoader::dl_require_symbols = ($bootname); my $boot_symbol_ref; # Many dynamic extension loading problems will appear to come from # this section of code: XYZ failed at line 123 of DynaLoader.pm. # Often these errors are actually occurring in the initialisation # C code of the extension XS file. Perl reports the error as being # in this perl code simply because this was the last perl code # it executed. my $libref = dl_load_file($file, 0) or do { require Carp; Carp::croak("Can't load '$file' for module $module: " . dl_error()); }; push(@DynaLoader::dl_librefs,$libref); # record loaded object $boot_symbol_ref = dl_find_symbol($libref, $bootname) or do { require Carp; Carp::croak("Can't find '$bootname' symbol in $file\n"); }; push(@DynaLoader::dl_modules, $module); # record loaded module boot: my $xs = dl_install_xsub($boots, $boot_symbol_ref, $file); # See comment block above push(@DynaLoader::dl_shared_objects, $file); # record files loaded return &$xs(@_); } # Can't test with DynaLoader->can('bootstrap_inherit') when building in the # core, as XSLoader gets built before DynaLoader. sub bootstrap_inherit { require DynaLoader; goto \&DynaLoader::bootstrap_inherit; } 1; __END__