mirror of
https://git.savannah.gnu.org/git/parallel.git
synced 2024-12-28 15:48:00 +00:00
118 lines
3.4 KiB
Perl
118 lines
3.4 KiB
Perl
# Generated from XSLoader.pm.PL (resolved %Config::Config value)
|
|
|
|
package XSLoader;
|
|
|
|
$VERSION = "0.10";
|
|
|
|
#use strict;
|
|
|
|
# enable debug/trace messages from DynaLoader perl code
|
|
# $dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug;
|
|
|
|
my $dl_dlext = 'so';
|
|
|
|
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;
|
|
|
|
die q{XSLoader::load('Your::Module', $Your::Module::VERSION)} unless @_;
|
|
|
|
my($module) = $_[0];
|
|
|
|
# work with static linking too
|
|
my $boots = "$module\::bootstrap";
|
|
goto &$boots if defined &$boots;
|
|
|
|
goto retry unless $module and defined &dl_load_file;
|
|
|
|
my @modparts = split(/::/,$module);
|
|
my $modfname = $modparts[-1];
|
|
|
|
my $modpname = join('/',@modparts);
|
|
my $modlibname = (caller())[1];
|
|
my $c = @modparts;
|
|
$modlibname =~ s,[\\/][^\\/]+$,, while $c--; # Q&D basename
|
|
my $file = "$modlibname/auto/$modpname/$modfname.$dl_dlext";
|
|
|
|
# print STDERR "XSLoader::load for $module ($file)\n" if $dl_debug;
|
|
|
|
my $bs = $file;
|
|
$bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library
|
|
|
|
if (-s $bs) { # only read file if it's not empty
|
|
# print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug;
|
|
eval { do $bs; };
|
|
warn "$bs: $@\n" if $@;
|
|
}
|
|
|
|
goto retry 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
|
|
|
|
my @unresolved = dl_undef_symbols();
|
|
if (@unresolved) {
|
|
require Carp;
|
|
Carp::carp("Undefined symbols present after loading $file: @unresolved\n");
|
|
}
|
|
|
|
$boot_symbol_ref = dl_find_symbol($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(@_);
|
|
|
|
retry:
|
|
my $bootstrap_inherit = DynaLoader->can('bootstrap_inherit') ||
|
|
XSLoader->can('bootstrap_inherit');
|
|
goto &$bootstrap_inherit;
|
|
}
|
|
|
|
# Versions of DynaLoader prior to 5.6.0 don't have this function.
|
|
sub bootstrap_inherit {
|
|
package DynaLoader;
|
|
|
|
my $module = $_[0];
|
|
local *DynaLoader::isa = *{"$module\::ISA"};
|
|
local @DynaLoader::isa = (@DynaLoader::isa, 'DynaLoader');
|
|
# Cannot goto due to delocalization. Will report errors on a wrong line?
|
|
require DynaLoader;
|
|
DynaLoader::bootstrap(@_);
|
|
}
|
|
|
|
1;
|
|
|
|
__END__
|
|
|