Filename | /usr/share/perl/5.28/XSLoader.pm |
Statements | Executed 0 statements in 0s |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
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12 | 12 | 12 | 4.43ms | 4.43ms | load | XSLoader::
0 | 0 | 0 | 0s | 0s | bootstrap_inherit | XSLoader::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
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1 | # Generated from XSLoader_pm.PL (resolved %Config::Config value) | ||||
2 | # This file is unique for every OS | ||||
3 | |||||
4 | package XSLoader; | ||||
5 | |||||
6 | $VERSION = "0.30"; # remember to update version in POD! | ||||
7 | |||||
8 | #use strict; | ||||
9 | |||||
10 | package DynaLoader; | ||||
11 | |||||
12 | # No prizes for guessing why we don't say 'bootstrap DynaLoader;' here. | ||||
13 | # NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB | ||||
14 | boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) && | ||||
15 | !defined(&dl_error); | ||||
16 | package XSLoader; | ||||
17 | |||||
18 | # spent 4.43ms within XSLoader::load which was called 12 times, avg 369µs/call:
# once (809µs+0s) by File::Copy::BEGIN@1 at line 94 of Time/HiRes.pm
# once (661µs+0s) by RBM::BEGIN@22 at line 24 of Digest/MD5.pm
# once (619µs+0s) by RBM::BEGIN@21 at line 244 of Digest/SHA.pm
# once (570µs+0s) by YAML::XS::BEGIN@20 at line 7 of YAML/XS/LibYAML.pm
# once (450µs+0s) by Unicode::UTF8::BEGIN@6 at line 14 of Unicode/UTF8.pm
# once (215µs+0s) by Encode::BEGIN@9 at line 12 of Encode.pm
# once (214µs+0s) by IO::Handle::BEGIN@8 at line 11 of IO.pm
# once (191µs+0s) by Storable::BEGIN@72 at line 11 of Fcntl.pm
# once (183µs+0s) by RBM::BEGIN@53 at line 68 of File/Glob.pm
# once (175µs+0s) by File::Spec::Unix::BEGIN@4 at line 80 of Cwd.pm
# once (174µs+0s) by Encode::BEGIN@55 at line 98 of Storable.pm
# once (172µs+0s) by YAML::XS::BEGIN@21 at line 23 of List/Util.pm | ||||
19 | package DynaLoader; | ||||
20 | |||||
21 | my ($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 | my $modfname_orig = $modfname; # For .bs file search | ||||
39 | |||||
40 | my $modpname = join('/',@modparts); | ||||
41 | my $c = () = split(/::/,$caller,-1); | ||||
42 | $modlibname =~ s,[\\/][^\\/]+$,, while $c--; # Q&D basename | ||||
43 | # Does this look like a relative path? | ||||
44 | if ($modlibname !~ m{^/}) { | ||||
45 | # Someone may have a #line directive that changes the file name, or | ||||
46 | # may be calling XSLoader::load from inside a string eval. We cer- | ||||
47 | # tainly do not want to go loading some code that is not in @INC, | ||||
48 | # as it could be untrusted. | ||||
49 | # | ||||
50 | # We could just fall back to DynaLoader here, but then the rest of | ||||
51 | # this function would go untested in the perl core, since all @INC | ||||
52 | # paths are relative during testing. That would be a time bomb | ||||
53 | # waiting to happen, since bugs could be introduced into the code. | ||||
54 | # | ||||
55 | # So look through @INC to see if $modlibname is in it. A rela- | ||||
56 | # tive $modlibname is not a common occurrence, so this block is | ||||
57 | # not hot code. | ||||
58 | FOUND: { | ||||
59 | for (@INC) { | ||||
60 | if ($_ eq $modlibname) { | ||||
61 | last FOUND; | ||||
62 | } | ||||
63 | } | ||||
64 | # Not found. Fall back to DynaLoader. | ||||
65 | goto \&XSLoader::bootstrap_inherit; | ||||
66 | } | ||||
67 | } | ||||
68 | my $file = "$modlibname/auto/$modpname/$modfname.so"; | ||||
69 | |||||
70 | # print STDERR "XSLoader::load for $module ($file)\n" if $dl_debug; | ||||
71 | |||||
72 | # N.B. The .bs file does not following the naming convention used | ||||
73 | # by mod2fname, so use the unedited version of the name. | ||||
74 | |||||
75 | my $bs = "$modlibname/auto/$modpname/$modfname_orig.bs"; | ||||
76 | |||||
77 | # This calls DynaLoader::bootstrap, which will load the .bs file if present | ||||
78 | goto \&XSLoader::bootstrap_inherit if not -f $file or -s $bs; | ||||
79 | |||||
80 | my $bootname = "boot_$module"; | ||||
81 | $bootname =~ s/\W/_/g; | ||||
82 | @DynaLoader::dl_require_symbols = ($bootname); | ||||
83 | |||||
84 | my $boot_symbol_ref; | ||||
85 | |||||
86 | # Many dynamic extension loading problems will appear to come from | ||||
87 | # this section of code: XYZ failed at line 123 of DynaLoader.pm. | ||||
88 | # Often these errors are actually occurring in the initialisation | ||||
89 | # C code of the extension XS file. Perl reports the error as being | ||||
90 | # in this perl code simply because this was the last perl code | ||||
91 | # it executed. | ||||
92 | |||||
93 | my $libref = dl_load_file($file, 0) or do { | ||||
94 | require Carp; | ||||
95 | Carp::croak("Can't load '$file' for module $module: " . dl_error()); | ||||
96 | }; | ||||
97 | push(@DynaLoader::dl_librefs,$libref); # record loaded object | ||||
98 | |||||
99 | $boot_symbol_ref = dl_find_symbol($libref, $bootname) or do { | ||||
100 | require Carp; | ||||
101 | Carp::croak("Can't find '$bootname' symbol in $file\n"); | ||||
102 | }; | ||||
103 | |||||
104 | push(@DynaLoader::dl_modules, $module); # record loaded module | ||||
105 | |||||
106 | boot: | ||||
107 | my $xs = dl_install_xsub($boots, $boot_symbol_ref, $file); | ||||
108 | |||||
109 | # See comment block above | ||||
110 | push(@DynaLoader::dl_shared_objects, $file); # record files loaded | ||||
111 | return &$xs(@_); | ||||
112 | } | ||||
113 | |||||
114 | sub bootstrap_inherit { | ||||
115 | require DynaLoader; | ||||
116 | goto \&DynaLoader::bootstrap_inherit; | ||||
117 | } | ||||
118 | |||||
119 | 1; | ||||
120 | |||||
121 | __END__ | ||||
122 |