Filename | /usr/lib/perl5/5.12.4/i686-linux/DynaLoader.pm |
Statements | Executed 58 statements in 7.65ms |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
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1 | 1 | 1 | 3.02ms | 3.50ms | BEGIN@25 | DynaLoader::
1 | 1 | 1 | 541µs | 1.45ms | bootstrap | DynaLoader::
1 | 1 | 1 | 259µs | 259µs | dl_load_file (xsub) | DynaLoader::
2 | 2 | 1 | 154µs | 154µs | CORE:subst (opcode) | DynaLoader::
2 | 1 | 1 | 50µs | 50µs | CORE:ftdir (opcode) | DynaLoader::
1 | 1 | 1 | 48µs | 48µs | BEGIN@18 | DynaLoader::
1 | 1 | 1 | 35µs | 35µs | dl_install_xsub (xsub) | DynaLoader::
1 | 1 | 1 | 20µs | 20µs | CORE:ftsize (opcode) | DynaLoader::
1 | 1 | 1 | 18µs | 18µs | CORE:ftfile (opcode) | DynaLoader::
1 | 1 | 1 | 14µs | 14µs | dl_find_symbol (xsub) | DynaLoader::
1 | 1 | 1 | 14µs | 14µs | dl_load_flags | DynaLoader::
1 | 1 | 1 | 8µs | 8µs | dl_undef_symbols (xsub) | DynaLoader::
0 | 0 | 0 | 0s | 0s | bootstrap_inherit | DynaLoader::
0 | 0 | 0 | 0s | 0s | croak | DynaLoader::
Line | State ments |
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1 | |||||
2 | # Generated from DynaLoader_pm.PL | ||||
3 | |||||
4 | package DynaLoader; | ||||
5 | |||||
6 | # And Gandalf said: 'Many folk like to know beforehand what is to | ||||
7 | # be set on the table; but those who have laboured to prepare the | ||||
8 | # feast like to keep their secret; for wonder makes the words of | ||||
9 | # praise louder.' | ||||
10 | |||||
11 | # (Quote from Tolkien suggested by Anno Siegel.) | ||||
12 | # | ||||
13 | # See pod text at end of file for documentation. | ||||
14 | # See also ext/DynaLoader/README in source tree for other information. | ||||
15 | # | ||||
16 | # Tim.Bunce@ig.co.uk, August 1994 | ||||
17 | |||||
18 | # spent 48µs within DynaLoader::BEGIN@18 which was called:
# once (48µs+0s) by List::MoreUtils::BEGIN@6 at line 20 | ||||
19 | 1 | 31µs | $VERSION = '1.10'; | ||
20 | 1 | 176µs | 1 | 48µs | } # spent 48µs making 1 call to DynaLoader::BEGIN@18 |
21 | |||||
22 | 1 | 521µs | require AutoLoader; | ||
23 | 1 | 10µs | *AUTOLOAD = \&AutoLoader::AUTOLOAD; | ||
24 | |||||
25 | 3 | 5.05ms | 2 | 3.58ms | # spent 3.50ms (3.02+476µs) within DynaLoader::BEGIN@25 which was called:
# once (3.02ms+476µs) by List::MoreUtils::BEGIN@6 at line 25 # spent 3.50ms making 1 call to DynaLoader::BEGIN@25
# spent 83µs making 1 call to Config::import |
26 | |||||
27 | # enable debug/trace messages from DynaLoader perl code | ||||
28 | 1 | 8µs | $dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug; | ||
29 | |||||
30 | # | ||||
31 | # Flags to alter dl_load_file behaviour. Assigned bits: | ||||
32 | # 0x01 make symbols available for linking later dl_load_file's. | ||||
33 | # (only known to work on Solaris 2 using dlopen(RTLD_GLOBAL)) | ||||
34 | # (ignored under VMS; effect is built-in to image linking) | ||||
35 | # | ||||
36 | # This is called as a class method $module->dl_load_flags. The | ||||
37 | # definition here will be inherited and result on "default" loading | ||||
38 | # behaviour unless a sub-class of DynaLoader defines its own version. | ||||
39 | # | ||||
40 | |||||
41 | 1 | 45µs | # spent 14µs within DynaLoader::dl_load_flags which was called:
# once (14µs+0s) by DynaLoader::bootstrap at line 200 | ||
42 | |||||
43 | 1 | 130µs | 3 | 10.4ms | ($dl_dlext, $dl_so, $dlsrc) = @Config::Config{qw(dlext so dlsrc)}; # spent 10.4ms making 3 calls to Config::FETCH, avg 3.47ms/call |
44 | |||||
45 | |||||
46 | 1 | 3µs | $do_expand = 0; | ||
47 | |||||
- - | |||||
50 | 1 | 6µs | @dl_require_symbols = (); # names of symbols we need | ||
51 | 1 | 3µs | @dl_resolve_using = (); # names of files to link with | ||
52 | 1 | 3µs | @dl_library_path = (); # path to look for files | ||
53 | |||||
54 | #XSLoader.pm may have added elements before we were required | ||||
55 | #@dl_shared_objects = (); # shared objects for symbols we have | ||||
56 | #@dl_librefs = (); # things we have loaded | ||||
57 | #@dl_modules = (); # Modules we have loaded | ||||
58 | |||||
59 | # This is a fix to support DLD's unfortunate desire to relink -lc | ||||
60 | 1 | 3µs | @dl_resolve_using = dl_findfile('-lc') if $dlsrc eq "dl_dld.xs"; | ||
61 | |||||
62 | # Initialise @dl_library_path with the 'standard' library path | ||||
63 | # for this platform as determined by Configure. | ||||
64 | |||||
65 | 1 | 43µs | 1 | 20µs | push(@dl_library_path, split(' ', $Config::Config{libpth})); # spent 20µs making 1 call to Config::FETCH |
66 | |||||
67 | |||||
68 | 1 | 32µs | 1 | 21µs | my $ldlibpthname = $Config::Config{ldlibpthname}; # spent 21µs making 1 call to Config::FETCH |
69 | 1 | 32µs | 1 | 19µs | my $ldlibpthname_defined = defined $Config::Config{ldlibpthname}; # spent 19µs making 1 call to Config::FETCH |
70 | 1 | 31µs | 1 | 19µs | my $pthsep = $Config::Config{path_sep}; # spent 19µs making 1 call to Config::FETCH |
71 | |||||
72 | # Add to @dl_library_path any extra directories we can gather from environment | ||||
73 | # during runtime. | ||||
74 | |||||
75 | 1 | 5µs | if ($ldlibpthname_defined && | ||
76 | exists $ENV{$ldlibpthname}) { | ||||
77 | push(@dl_library_path, split(/$pthsep/, $ENV{$ldlibpthname})); | ||||
78 | } | ||||
79 | |||||
80 | # E.g. HP-UX supports both its native SHLIB_PATH *and* LD_LIBRARY_PATH. | ||||
81 | |||||
82 | 1 | 4µs | if ($ldlibpthname_defined && | ||
83 | $ldlibpthname ne 'LD_LIBRARY_PATH' && | ||||
84 | exists $ENV{LD_LIBRARY_PATH}) { | ||||
85 | push(@dl_library_path, split(/$pthsep/, $ENV{LD_LIBRARY_PATH})); | ||||
86 | } | ||||
87 | |||||
88 | |||||
89 | # No prizes for guessing why we don't say 'bootstrap DynaLoader;' here. | ||||
90 | # NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB | ||||
91 | 1 | 6µs | boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) && | ||
92 | !defined(&dl_error); | ||||
93 | |||||
94 | 1 | 2µs | if ($dl_debug) { | ||
95 | print STDERR "DynaLoader.pm loaded (@INC, @dl_library_path)\n"; | ||||
96 | print STDERR "DynaLoader not linked into this perl\n" | ||||
97 | unless defined(&boot_DynaLoader); | ||||
98 | } | ||||
99 | |||||
100 | 1 | 88µs | 1; # End of main code | ||
101 | |||||
102 | |||||
103 | sub croak { require Carp; Carp::croak(@_) } | ||||
104 | |||||
105 | sub bootstrap_inherit { | ||||
106 | my $module = $_[0]; | ||||
107 | local *isa = *{"$module\::ISA"}; | ||||
108 | local @isa = (@isa, 'DynaLoader'); | ||||
109 | # Cannot goto due to delocalization. Will report errors on a wrong line? | ||||
110 | bootstrap(@_); | ||||
111 | } | ||||
112 | |||||
113 | # The bootstrap function cannot be autoloaded (without complications) | ||||
114 | # so we define it here: | ||||
115 | |||||
116 | # spent 1.45ms (541µs+911µs) within DynaLoader::bootstrap which was called:
# once (541µs+911µs) by List::MoreUtils::BEGIN@9 at line 36 of List/MoreUtils.pm | ||||
117 | # use local vars to enable $module.bs script to edit values | ||||
118 | 1 | 18µs | local(@args) = @_; | ||
119 | 1 | 6µs | local($module) = $args[0]; | ||
120 | 1 | 5µs | local(@dirs, $file); | ||
121 | |||||
122 | 1 | 2µs | unless ($module) { | ||
123 | require Carp; | ||||
124 | Carp::confess("Usage: DynaLoader::bootstrap(module)"); | ||||
125 | } | ||||
126 | |||||
127 | # A common error on platforms which don't support dynamic loading. | ||||
128 | # Since it's fatal and potentially confusing we give a detailed message. | ||||
129 | 1 | 4µs | croak("Can't load module $module, dynamic loading not available in this perl.\n". | ||
130 | " (You may need to build a new perl executable which either supports\n". | ||||
131 | " dynamic loading or has the $module module statically linked into it.)\n") | ||||
132 | unless defined(&dl_load_file); | ||||
133 | |||||
- - | |||||
136 | 1 | 15µs | my @modparts = split(/::/,$module); | ||
137 | 1 | 6µs | my $modfname = $modparts[-1]; | ||
138 | |||||
139 | # Some systems have restrictions on files names for DLL's etc. | ||||
140 | # mod2fname returns appropriate file base name (typically truncated) | ||||
141 | # It may also edit @modparts if required. | ||||
142 | 1 | 3µs | $modfname = &mod2fname(\@modparts) if defined &mod2fname; | ||
143 | |||||
144 | |||||
145 | |||||
146 | 1 | 8µs | my $modpname = join('/',@modparts); | ||
147 | |||||
148 | 1 | 2µs | print STDERR "DynaLoader::bootstrap for $module ", | ||
149 | "(auto/$modpname/$modfname.$dl_dlext)\n" | ||||
150 | if $dl_debug; | ||||
151 | |||||
152 | 1 | 9µs | foreach (@INC) { | ||
153 | |||||
154 | |||||
155 | 2 | 18µs | my $dir = "$_/auto/$modpname"; | ||
156 | |||||
157 | |||||
158 | 2 | 100µs | 2 | 50µs | next unless -d $dir; # skip over uninteresting directories # spent 50µs making 2 calls to DynaLoader::CORE:ftdir, avg 25µs/call |
159 | |||||
160 | # check for common cases to avoid autoload of dl_findfile | ||||
161 | 1 | 11µs | my $try = "$dir/$modfname.$dl_dlext"; | ||
162 | 1 | 49µs | 1 | 18µs | last if $file = ($do_expand) ? dl_expandspec($try) : ((-f $try) && $try); # spent 18µs making 1 call to DynaLoader::CORE:ftfile |
163 | |||||
164 | # no luck here, save dir for possible later dl_findfile search | ||||
165 | push @dirs, $dir; | ||||
166 | } | ||||
167 | # last resort, let dl_findfile have a go in all known locations | ||||
168 | 1 | 2µs | $file = dl_findfile(map("-L$_",@dirs,@INC), $modfname) unless $file; | ||
169 | |||||
170 | 1 | 2µs | croak("Can't locate loadable object for module $module in \@INC (\@INC contains: @INC)") | ||
171 | unless $file; # wording similar to error from 'require' | ||||
172 | |||||
173 | |||||
174 | 1 | 8µs | my $bootname = "boot_$module"; | ||
175 | 1 | 43µs | 1 | 17µs | $bootname =~ s/\W/_/g; # spent 17µs making 1 call to DynaLoader::CORE:subst |
176 | 1 | 7µs | @dl_require_symbols = ($bootname); | ||
177 | |||||
178 | # Execute optional '.bootstrap' perl script for this module. | ||||
179 | # The .bs file can be used to configure @dl_resolve_using etc to | ||||
180 | # match the needs of the individual module on this architecture. | ||||
181 | 1 | 5µs | my $bs = $file; | ||
182 | 1 | 155µs | 1 | 137µs | $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library # spent 137µs making 1 call to DynaLoader::CORE:subst |
183 | 1 | 46µs | 1 | 20µs | if (-s $bs) { # only read file if it's not empty # spent 20µs making 1 call to DynaLoader::CORE:ftsize |
184 | print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug; | ||||
185 | eval { do $bs; }; | ||||
186 | warn "$bs: $@\n" if $@; | ||||
187 | } | ||||
188 | |||||
189 | 1 | 3µs | my $boot_symbol_ref; | ||
190 | |||||
191 | |||||
192 | |||||
193 | # Many dynamic extension loading problems will appear to come from | ||||
194 | # this section of code: XYZ failed at line 123 of DynaLoader.pm. | ||||
195 | # Often these errors are actually occurring in the initialisation | ||||
196 | # C code of the extension XS file. Perl reports the error as being | ||||
197 | # in this perl code simply because this was the last perl code | ||||
198 | # it executed. | ||||
199 | |||||
200 | 1 | 320µs | 2 | 273µs | my $libref = dl_load_file($file, $module->dl_load_flags) or # spent 259µs making 1 call to DynaLoader::dl_load_file
# spent 14µs making 1 call to DynaLoader::dl_load_flags |
201 | croak("Can't load '$file' for module $module: ".dl_error()); | ||||
202 | |||||
203 | 1 | 5µs | push(@dl_librefs,$libref); # record loaded object | ||
204 | |||||
205 | 1 | 42µs | 1 | 8µs | my @unresolved = dl_undef_symbols(); # spent 8µs making 1 call to DynaLoader::dl_undef_symbols |
206 | 1 | 4µs | if (@unresolved) { | ||
207 | require Carp; | ||||
208 | Carp::carp("Undefined symbols present after loading $file: @unresolved\n"); | ||||
209 | } | ||||
210 | |||||
211 | 1 | 42µs | 1 | 14µs | $boot_symbol_ref = dl_find_symbol($libref, $bootname) or # spent 14µs making 1 call to DynaLoader::dl_find_symbol |
212 | croak("Can't find '$bootname' symbol in $file\n"); | ||||
213 | |||||
214 | 1 | 7µs | push(@dl_modules, $module); # record loaded module | ||
215 | |||||
216 | 1 | 66µs | 1 | 35µs | boot: # spent 35µs making 1 call to DynaLoader::dl_install_xsub |
217 | my $xs = dl_install_xsub("${module}::bootstrap", $boot_symbol_ref, $file); | ||||
218 | |||||
219 | # See comment block above | ||||
220 | |||||
221 | 1 | 6µs | push(@dl_shared_objects, $file); # record files loaded | ||
222 | |||||
223 | 1 | 397µs | 1 | 338µs | &$xs(@args); # spent 338µs making 1 call to List::MoreUtils::bootstrap |
224 | } | ||||
225 | |||||
226 | |||||
227 | #sub _check_file { # private utility to handle dl_expandspec vs -f tests | ||||
228 | # my($file) = @_; | ||||
229 | # return $file if (!$do_expand && -f $file); # the common case | ||||
230 | # return $file if ( $do_expand && ($file=dl_expandspec($file))); | ||||
231 | # return undef; | ||||
232 | #} | ||||
233 | |||||
234 | |||||
235 | # Let autosplit and the autoloader deal with these functions: | ||||
236 | __END__ | ||||
# spent 50µs within DynaLoader::CORE:ftdir which was called 2 times, avg 25µs/call:
# 2 times (50µs+0s) by DynaLoader::bootstrap at line 158, avg 25µs/call | |||||
# spent 18µs within DynaLoader::CORE:ftfile which was called:
# once (18µs+0s) by DynaLoader::bootstrap at line 162 | |||||
# spent 20µs within DynaLoader::CORE:ftsize which was called:
# once (20µs+0s) by DynaLoader::bootstrap at line 183 | |||||
sub DynaLoader::CORE:subst; # opcode | |||||
# spent 14µs within DynaLoader::dl_find_symbol which was called:
# once (14µs+0s) by DynaLoader::bootstrap at line 211 | |||||
# spent 35µs within DynaLoader::dl_install_xsub which was called:
# once (35µs+0s) by DynaLoader::bootstrap at line 216 | |||||
# spent 259µs within DynaLoader::dl_load_file which was called:
# once (259µs+0s) by DynaLoader::bootstrap at line 200 | |||||
# spent 8µs within DynaLoader::dl_undef_symbols which was called:
# once (8µs+0s) by DynaLoader::bootstrap at line 205 |