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For v5.pl
  Run on Sun Sep 22 16:32:09 2019
Reported on Sun Sep 22 16:32:53 2019

Filename/usr/share/perl/5.26/XSLoader.pm
StatementsExecuted 0 statements in 0s
Subroutines
Calls P F Exclusive
Time
Inclusive
Time
Subroutine
222235µs235µsXSLoader::::loadXSLoader::load
0000s0sXSLoader::::bootstrap_inheritXSLoader::bootstrap_inherit
Call graph for these subroutines as a Graphviz dot language file.
Line State
ments
Time
on line
Calls Time
in subs
Code
1# Generated from XSLoader_pm.PL (resolved %Config::Config value)
2# This file is unique for every OS
3
4package XSLoader;
5
6$VERSION = "0.27";
7
8#use strict;
9
10package DynaLoader;
11
12# No prizes for guessing why we don't say 'bootstrap DynaLoader;' here.
13# NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB
14boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) &&
15 !defined(&dl_error);
16package XSLoader;
17
18
# spent 235µs within XSLoader::load which was called 2 times, avg 118µs/call: # once (135µs+0s) by Function::Parameters::BEGIN@7 at line 23 of List/Util.pm # once (101µs+0s) by Function::Parameters::BEGIN@15 at line 18 of Function/Parameters.pm
sub load {
19 package DynaLoader;
20
21 my ($caller, $modlibname) = caller();
22 my $module = $caller;
23
24 if (@_) {
25 $module = $_[0];
26 } else {
27 $_[0] = $module;
28 }
29
30 # work with static linking too
31 my $boots = "$module\::bootstrap";
32 goto &$boots if defined &$boots;
33
34 goto \&XSLoader::bootstrap_inherit unless $module and defined &dl_load_file;
35
36 my @modparts = split(/::/,$module);
37 my $modfname = $modparts[-1];
38
39 my $modpname = join('/',@modparts);
40 my $c = () = split(/::/,$caller,-1);
41 $modlibname =~ s,[\\/][^\\/]+$,, while $c--; # Q&D basename
42 # Does this look like a relative path?
43 if ($modlibname !~ m{^/}) {
44 # Someone may have a #line directive that changes the file name, or
45 # may be calling XSLoader::load from inside a string eval. We cer-
46 # tainly do not want to go loading some code that is not in @INC,
47 # as it could be untrusted.
48 #
49 # We could just fall back to DynaLoader here, but then the rest of
50 # this function would go untested in the perl core, since all @INC
51 # paths are relative during testing. That would be a time bomb
52 # waiting to happen, since bugs could be introduced into the code.
53 #
54 # So look through @INC to see if $modlibname is in it. A rela-
55 # tive $modlibname is not a common occurrence, so this block is
56 # not hot code.
57 FOUND: {
58 for (@INC) {
59 if ($_ eq $modlibname) {
60 last FOUND;
61 }
62 }
63 # Not found. Fall back to DynaLoader.
64 goto \&XSLoader::bootstrap_inherit;
65 }
66 }
67 my $file = "$modlibname/auto/$modpname/$modfname.so";
68
69# print STDERR "XSLoader::load for $module ($file)\n" if $dl_debug;
70
71 my $bs = $file;
72 $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library
73
74 if (-s $bs) { # only read file if it's not empty
75# print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug;
76 eval { local @INC = ('.'); do $bs; };
77 warn "$bs: $@\n" if $@;
78 goto \&XSLoader::bootstrap_inherit;
79 }
80
81 goto \&XSLoader::bootstrap_inherit if not -f $file;
82
83 my $bootname = "boot_$module";
84 $bootname =~ s/\W/_/g;
85 @DynaLoader::dl_require_symbols = ($bootname);
86
87 my $boot_symbol_ref;
88
89 # Many dynamic extension loading problems will appear to come from
90 # this section of code: XYZ failed at line 123 of DynaLoader.pm.
91 # Often these errors are actually occurring in the initialisation
92 # C code of the extension XS file. Perl reports the error as being
93 # in this perl code simply because this was the last perl code
94 # it executed.
95
96 my $libref = dl_load_file($file, 0) or do {
97 require Carp;
98 Carp::croak("Can't load '$file' for module $module: " . dl_error());
99 };
100 push(@DynaLoader::dl_librefs,$libref); # record loaded object
101
102 $boot_symbol_ref = dl_find_symbol($libref, $bootname) or do {
103 require Carp;
104 Carp::croak("Can't find '$bootname' symbol in $file\n");
105 };
106
107 push(@DynaLoader::dl_modules, $module); # record loaded module
108
109 boot:
110 my $xs = dl_install_xsub($boots, $boot_symbol_ref, $file);
111
112 # See comment block above
113 push(@DynaLoader::dl_shared_objects, $file); # record files loaded
114 return &$xs(@_);
115}
116
117sub bootstrap_inherit {
118 require DynaLoader;
119 goto \&DynaLoader::bootstrap_inherit;
120}
121
1221;
123
124__END__
125