Filename | /home/ss5/perl5/perlbrew/perls/perl-5.14.1/lib/5.14.1/x86_64-linux-thread-multi/DynaLoader.pm |
Statements | Executed 91 statements in 9.31ms |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
1 | 1 | 1 | 2.72ms | 3.17ms | BEGIN@22 | DynaLoader::
2 | 2 | 2 | 584µs | 2.23ms | bootstrap | DynaLoader::
2 | 1 | 1 | 577µs | 577µs | dl_load_file (xsub) | DynaLoader::
4 | 2 | 1 | 325µs | 325µs | CORE:subst (opcode) | DynaLoader::
4 | 1 | 1 | 102µs | 102µs | CORE:ftdir (opcode) | DynaLoader::
2 | 1 | 1 | 61µs | 61µs | dl_install_xsub (xsub) | DynaLoader::
1 | 1 | 1 | 34µs | 34µs | BEGIN@18 | DynaLoader::
2 | 1 | 1 | 31µs | 31µs | CORE:ftsize (opcode) | DynaLoader::
2 | 1 | 1 | 26µs | 26µs | CORE:ftfile (opcode) | DynaLoader::
2 | 1 | 1 | 19µs | 19µs | dl_find_symbol (xsub) | DynaLoader::
2 | 1 | 1 | 13µs | 13µs | dl_load_flags | DynaLoader::
2 | 1 | 1 | 9µs | 9µs | dl_undef_symbols (xsub) | DynaLoader::
0 | 0 | 0 | 0s | 0s | bootstrap_inherit | DynaLoader::
0 | 0 | 0 | 0s | 0s | croak | DynaLoader::
0 | 0 | 0 | 0s | 0s | dl_expandspec | DynaLoader::
0 | 0 | 0 | 0s | 0s | dl_find_symbol_anywhere | DynaLoader::
0 | 0 | 0 | 0s | 0s | dl_findfile | 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 34µs within DynaLoader::BEGIN@18 which was called:
# once (34µs+0s) by List::MoreUtils::BEGIN@6 at line 20 | ||||
19 | 1 | 18µs | $VERSION = '1.13'; | ||
20 | 1 | 75µs | 1 | 34µs | } # spent 34µs making 1 call to DynaLoader::BEGIN@18 |
21 | |||||
22 | 2 | 6.76ms | 2 | 3.21ms | # spent 3.17ms (2.72+446µs) within DynaLoader::BEGIN@22 which was called:
# once (2.72ms+446µs) by List::MoreUtils::BEGIN@6 at line 22 # spent 3.17ms making 1 call to DynaLoader::BEGIN@22
# spent 45µs making 1 call to Config::import |
23 | |||||
24 | # enable debug/trace messages from DynaLoader perl code | ||||
25 | 1 | 8µs | $dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug; | ||
26 | |||||
27 | # | ||||
28 | # Flags to alter dl_load_file behaviour. Assigned bits: | ||||
29 | # 0x01 make symbols available for linking later dl_load_file's. | ||||
30 | # (only known to work on Solaris 2 using dlopen(RTLD_GLOBAL)) | ||||
31 | # (ignored under VMS; effect is built-in to image linking) | ||||
32 | # | ||||
33 | # This is called as a class method $module->dl_load_flags. The | ||||
34 | # definition here will be inherited and result on "default" loading | ||||
35 | # behaviour unless a sub-class of DynaLoader defines its own version. | ||||
36 | # | ||||
37 | |||||
38 | 2 | 26µs | # spent 13µs within DynaLoader::dl_load_flags which was called 2 times, avg 7µs/call:
# 2 times (13µs+0s) by DynaLoader::bootstrap at line 190, avg 7µs/call | ||
39 | |||||
40 | 1 | 66µs | 3 | 46µs | ($dl_dlext, $dl_so, $dlsrc) = @Config::Config{qw(dlext so dlsrc)}; # spent 46µs making 3 calls to Config::FETCH, avg 15µs/call |
41 | |||||
42 | |||||
43 | 1 | 1µs | $do_expand = 0; | ||
44 | |||||
45 | 1 | 3µs | @dl_require_symbols = (); # names of symbols we need | ||
46 | 1 | 1µs | @dl_resolve_using = (); # names of files to link with | ||
47 | 1 | 1µs | @dl_library_path = (); # path to look for files | ||
48 | |||||
49 | #XSLoader.pm may have added elements before we were required | ||||
50 | #@dl_shared_objects = (); # shared objects for symbols we have | ||||
51 | #@dl_librefs = (); # things we have loaded | ||||
52 | #@dl_modules = (); # Modules we have loaded | ||||
53 | |||||
54 | # This is a fix to support DLD's unfortunate desire to relink -lc | ||||
55 | 1 | 1µs | @dl_resolve_using = dl_findfile('-lc') if $dlsrc eq "dl_dld.xs"; | ||
56 | |||||
57 | # Initialise @dl_library_path with the 'standard' library path | ||||
58 | # for this platform as determined by Configure. | ||||
59 | |||||
60 | 1 | 24µs | 1 | 10µs | push(@dl_library_path, split(' ', $Config::Config{libpth})); # spent 10µs making 1 call to Config::FETCH |
61 | |||||
62 | |||||
63 | 1 | 14µs | 1 | 9µs | my $ldlibpthname = $Config::Config{ldlibpthname}; # spent 9µs making 1 call to Config::FETCH |
64 | 1 | 14µs | 1 | 9µs | my $ldlibpthname_defined = defined $Config::Config{ldlibpthname}; # spent 9µs making 1 call to Config::FETCH |
65 | 1 | 13µs | 1 | 8µs | my $pthsep = $Config::Config{path_sep}; # spent 8µs making 1 call to Config::FETCH |
66 | |||||
67 | # Add to @dl_library_path any extra directories we can gather from environment | ||||
68 | # during runtime. | ||||
69 | |||||
70 | 1 | 3µs | if ($ldlibpthname_defined && | ||
71 | exists $ENV{$ldlibpthname}) { | ||||
72 | push(@dl_library_path, split(/$pthsep/, $ENV{$ldlibpthname})); | ||||
73 | } | ||||
74 | |||||
75 | # E.g. HP-UX supports both its native SHLIB_PATH *and* LD_LIBRARY_PATH. | ||||
76 | |||||
77 | 1 | 1µs | if ($ldlibpthname_defined && | ||
78 | $ldlibpthname ne 'LD_LIBRARY_PATH' && | ||||
79 | exists $ENV{LD_LIBRARY_PATH}) { | ||||
80 | push(@dl_library_path, split(/$pthsep/, $ENV{LD_LIBRARY_PATH})); | ||||
81 | } | ||||
82 | |||||
83 | |||||
84 | # No prizes for guessing why we don't say 'bootstrap DynaLoader;' here. | ||||
85 | # NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB | ||||
86 | 1 | 3µs | boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) && | ||
87 | !defined(&dl_error); | ||||
88 | |||||
89 | 1 | 600ns | if ($dl_debug) { | ||
90 | print STDERR "DynaLoader.pm loaded (@INC, @dl_library_path)\n"; | ||||
91 | print STDERR "DynaLoader not linked into this perl\n" | ||||
92 | unless defined(&boot_DynaLoader); | ||||
93 | } | ||||
94 | |||||
95 | 1 | 71µs | 1; # End of main code | ||
96 | |||||
97 | |||||
98 | sub croak { require Carp; Carp::croak(@_) } | ||||
99 | |||||
100 | sub bootstrap_inherit { | ||||
101 | my $module = $_[0]; | ||||
102 | local *isa = *{"$module\::ISA"}; | ||||
103 | local @isa = (@isa, 'DynaLoader'); | ||||
104 | # Cannot goto due to delocalization. Will report errors on a wrong line? | ||||
105 | bootstrap(@_); | ||||
106 | } | ||||
107 | |||||
108 | # spent 2.23ms (584µs+1.64) within DynaLoader::bootstrap which was called 2 times, avg 1.11ms/call:
# once (324µs+939µs) by List::MoreUtils::BEGIN@9 at line 36 of List/MoreUtils.pm
# once (260µs+703µs) by Data::OptList::BEGIN@10 at line 88 of Params/Util.pm | ||||
109 | # use local vars to enable $module.bs script to edit values | ||||
110 | 70 | 2.21ms | local(@args) = @_; | ||
111 | local($module) = $args[0]; | ||||
112 | local(@dirs, $file); | ||||
113 | |||||
114 | unless ($module) { | ||||
115 | require Carp; | ||||
116 | Carp::confess("Usage: DynaLoader::bootstrap(module)"); | ||||
117 | } | ||||
118 | |||||
119 | # A common error on platforms which don't support dynamic loading. | ||||
120 | # Since it's fatal and potentially confusing we give a detailed message. | ||||
121 | croak("Can't load module $module, dynamic loading not available in this perl.\n". | ||||
122 | " (You may need to build a new perl executable which either supports\n". | ||||
123 | " dynamic loading or has the $module module statically linked into it.)\n") | ||||
124 | unless defined(&dl_load_file); | ||||
125 | |||||
- - | |||||
128 | my @modparts = split(/::/,$module); | ||||
129 | my $modfname = $modparts[-1]; | ||||
130 | |||||
131 | # Some systems have restrictions on files names for DLL's etc. | ||||
132 | # mod2fname returns appropriate file base name (typically truncated) | ||||
133 | # It may also edit @modparts if required. | ||||
134 | $modfname = &mod2fname(\@modparts) if defined &mod2fname; | ||||
135 | |||||
136 | |||||
137 | |||||
138 | my $modpname = join('/',@modparts); | ||||
139 | |||||
140 | print STDERR "DynaLoader::bootstrap for $module ", | ||||
141 | "(auto/$modpname/$modfname.$dl_dlext)\n" | ||||
142 | if $dl_debug; | ||||
143 | |||||
144 | foreach (@INC) { | ||||
145 | |||||
146 | my $dir = "$_/auto/$modpname"; | ||||
147 | |||||
148 | 4 | 102µs | next unless -d $dir; # skip over uninteresting directories # spent 102µs making 4 calls to DynaLoader::CORE:ftdir, avg 25µs/call | ||
149 | |||||
150 | # check for common cases to avoid autoload of dl_findfile | ||||
151 | my $try = "$dir/$modfname.$dl_dlext"; | ||||
152 | 2 | 26µs | last if $file = ($do_expand) ? dl_expandspec($try) : ((-f $try) && $try); # spent 26µs making 2 calls to DynaLoader::CORE:ftfile, avg 13µs/call | ||
153 | |||||
154 | # no luck here, save dir for possible later dl_findfile search | ||||
155 | push @dirs, $dir; | ||||
156 | } | ||||
157 | # last resort, let dl_findfile have a go in all known locations | ||||
158 | $file = dl_findfile(map("-L$_",@dirs,@INC), $modfname) unless $file; | ||||
159 | |||||
160 | croak("Can't locate loadable object for module $module in \@INC (\@INC contains: @INC)") | ||||
161 | unless $file; # wording similar to error from 'require' | ||||
162 | |||||
163 | |||||
164 | my $bootname = "boot_$module"; | ||||
165 | 2 | 30µs | $bootname =~ s/\W/_/g; # spent 30µs making 2 calls to DynaLoader::CORE:subst, avg 15µs/call | ||
166 | @dl_require_symbols = ($bootname); | ||||
167 | |||||
168 | # Execute optional '.bootstrap' perl script for this module. | ||||
169 | # The .bs file can be used to configure @dl_resolve_using etc to | ||||
170 | # match the needs of the individual module on this architecture. | ||||
171 | my $bs = $file; | ||||
172 | 2 | 295µs | $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library # spent 295µs making 2 calls to DynaLoader::CORE:subst, avg 147µs/call | ||
173 | 2 | 31µs | if (-s $bs) { # only read file if it's not empty # spent 31µs making 2 calls to DynaLoader::CORE:ftsize, avg 16µs/call | ||
174 | print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug; | ||||
175 | eval { do $bs; }; | ||||
176 | warn "$bs: $@\n" if $@; | ||||
177 | } | ||||
178 | |||||
179 | my $boot_symbol_ref; | ||||
180 | |||||
181 | |||||
182 | |||||
183 | # Many dynamic extension loading problems will appear to come from | ||||
184 | # this section of code: XYZ failed at line 123 of DynaLoader.pm. | ||||
185 | # Often these errors are actually occurring in the initialisation | ||||
186 | # C code of the extension XS file. Perl reports the error as being | ||||
187 | # in this perl code simply because this was the last perl code | ||||
188 | # it executed. | ||||
189 | |||||
190 | 4 | 590µs | my $libref = dl_load_file($file, $module->dl_load_flags) or # spent 577µs making 2 calls to DynaLoader::dl_load_file, avg 288µs/call
# spent 13µs making 2 calls to DynaLoader::dl_load_flags, avg 7µs/call | ||
191 | croak("Can't load '$file' for module $module: ".dl_error()); | ||||
192 | |||||
193 | push(@dl_librefs,$libref); # record loaded object | ||||
194 | |||||
195 | 2 | 9µs | my @unresolved = dl_undef_symbols(); # spent 9µs making 2 calls to DynaLoader::dl_undef_symbols, avg 5µs/call | ||
196 | if (@unresolved) { | ||||
197 | require Carp; | ||||
198 | Carp::carp("Undefined symbols present after loading $file: @unresolved\n"); | ||||
199 | } | ||||
200 | |||||
201 | 2 | 19µs | $boot_symbol_ref = dl_find_symbol($libref, $bootname) or # spent 19µs making 2 calls to DynaLoader::dl_find_symbol, avg 10µs/call | ||
202 | croak("Can't find '$bootname' symbol in $file\n"); | ||||
203 | |||||
204 | push(@dl_modules, $module); # record loaded module | ||||
205 | |||||
206 | 2 | 61µs | boot: # spent 61µs making 2 calls to DynaLoader::dl_install_xsub, avg 30µs/call | ||
207 | my $xs = dl_install_xsub("${module}::bootstrap", $boot_symbol_ref, $file); | ||||
208 | |||||
209 | # See comment block above | ||||
210 | |||||
211 | push(@dl_shared_objects, $file); # record files loaded | ||||
212 | |||||
213 | 2 | 479µs | &$xs(@args); # spent 342µs making 1 call to List::MoreUtils::bootstrap
# spent 137µs making 1 call to Params::Util::bootstrap | ||
214 | } | ||||
215 | |||||
216 | sub dl_findfile { | ||||
217 | # Read ext/DynaLoader/DynaLoader.doc for detailed information. | ||||
218 | # This function does not automatically consider the architecture | ||||
219 | # or the perl library auto directories. | ||||
220 | my (@args) = @_; | ||||
221 | my (@dirs, $dir); # which directories to search | ||||
222 | my (@found); # full paths to real files we have found | ||||
223 | #my $dl_ext= 'so'; # $Config::Config{'dlext'} suffix for perl extensions | ||||
224 | #my $dl_so = 'so'; # $Config::Config{'so'} suffix for shared libraries | ||||
225 | |||||
226 | print STDERR "dl_findfile(@args)\n" if $dl_debug; | ||||
227 | |||||
228 | # accumulate directories but process files as they appear | ||||
229 | arg: foreach(@args) { | ||||
230 | # Special fast case: full filepath requires no search | ||||
231 | |||||
232 | |||||
233 | if (m:/: && -f $_) { | ||||
234 | push(@found,$_); | ||||
235 | last arg unless wantarray; | ||||
236 | next; | ||||
237 | } | ||||
238 | |||||
239 | |||||
240 | # Deal with directories first: | ||||
241 | # Using a -L prefix is the preferred option (faster and more robust) | ||||
242 | if (m:^-L:) { s/^-L//; push(@dirs, $_); next; } | ||||
243 | |||||
244 | # Otherwise we try to try to spot directories by a heuristic | ||||
245 | # (this is a more complicated issue than it first appears) | ||||
246 | if (m:/: && -d $_) { push(@dirs, $_); next; } | ||||
247 | |||||
248 | |||||
249 | |||||
250 | # Only files should get this far... | ||||
251 | my(@names, $name); # what filenames to look for | ||||
252 | if (m:-l: ) { # convert -lname to appropriate library name | ||||
253 | s/-l//; | ||||
254 | push(@names,"lib$_.$dl_so"); | ||||
255 | push(@names,"lib$_.a"); | ||||
256 | } else { # Umm, a bare name. Try various alternatives: | ||||
257 | # these should be ordered with the most likely first | ||||
258 | push(@names,"$_.$dl_dlext") unless m/\.$dl_dlext$/o; | ||||
259 | push(@names,"$_.$dl_so") unless m/\.$dl_so$/o; | ||||
260 | |||||
261 | push(@names,"lib$_.$dl_so") unless m:/:; | ||||
262 | push(@names,"$_.a") if !m/\.a$/ and $dlsrc eq "dl_dld.xs"; | ||||
263 | push(@names, $_); | ||||
264 | } | ||||
265 | my $dirsep = '/'; | ||||
266 | |||||
267 | foreach $dir (@dirs, @dl_library_path) { | ||||
268 | next unless -d $dir; | ||||
269 | |||||
270 | foreach $name (@names) { | ||||
271 | my($file) = "$dir$dirsep$name"; | ||||
272 | print STDERR " checking in $dir for $name\n" if $dl_debug; | ||||
273 | $file = ($do_expand) ? dl_expandspec($file) : (-f $file && $file); | ||||
274 | #$file = _check_file($file); | ||||
275 | if ($file) { | ||||
276 | push(@found, $file); | ||||
277 | next arg; # no need to look any further | ||||
278 | } | ||||
279 | } | ||||
280 | } | ||||
281 | } | ||||
282 | if ($dl_debug) { | ||||
283 | foreach(@dirs) { | ||||
284 | print STDERR " dl_findfile ignored non-existent directory: $_\n" unless -d $_; | ||||
285 | } | ||||
286 | print STDERR "dl_findfile found: @found\n"; | ||||
287 | } | ||||
288 | return $found[0] unless wantarray; | ||||
289 | @found; | ||||
290 | } | ||||
291 | |||||
- - | |||||
294 | sub dl_expandspec { | ||||
295 | my($spec) = @_; | ||||
296 | # Optional function invoked if DynaLoader.pm sets $do_expand. | ||||
297 | # Most systems do not require or use this function. | ||||
298 | # Some systems may implement it in the dl_*.xs file in which case | ||||
299 | # this Perl version should be excluded at build time. | ||||
300 | |||||
301 | # This function is designed to deal with systems which treat some | ||||
302 | # 'filenames' in a special way. For example VMS 'Logical Names' | ||||
303 | # (something like unix environment variables - but different). | ||||
304 | # This function should recognise such names and expand them into | ||||
305 | # full file paths. | ||||
306 | # Must return undef if $spec is invalid or file does not exist. | ||||
307 | |||||
308 | my $file = $spec; # default output to input | ||||
309 | |||||
310 | return undef unless -f $file; | ||||
311 | print STDERR "dl_expandspec($spec) => $file\n" if $dl_debug; | ||||
312 | $file; | ||||
313 | } | ||||
314 | |||||
315 | sub dl_find_symbol_anywhere | ||||
316 | { | ||||
317 | my $sym = shift; | ||||
318 | my $libref; | ||||
319 | foreach $libref (@dl_librefs) { | ||||
320 | my $symref = dl_find_symbol($libref,$sym); | ||||
321 | return $symref if $symref; | ||||
322 | } | ||||
323 | return undef; | ||||
324 | } | ||||
325 | |||||
326 | __END__ | ||||
# spent 102µs within DynaLoader::CORE:ftdir which was called 4 times, avg 25µs/call:
# 4 times (102µs+0s) by DynaLoader::bootstrap at line 148, avg 25µs/call | |||||
# spent 26µs within DynaLoader::CORE:ftfile which was called 2 times, avg 13µs/call:
# 2 times (26µs+0s) by DynaLoader::bootstrap at line 152, avg 13µs/call | |||||
# spent 31µs within DynaLoader::CORE:ftsize which was called 2 times, avg 16µs/call:
# 2 times (31µs+0s) by DynaLoader::bootstrap at line 173, avg 16µs/call | |||||
sub DynaLoader::CORE:subst; # opcode | |||||
# spent 19µs within DynaLoader::dl_find_symbol which was called 2 times, avg 10µs/call:
# 2 times (19µs+0s) by DynaLoader::bootstrap at line 201, avg 10µs/call | |||||
# spent 61µs within DynaLoader::dl_install_xsub which was called 2 times, avg 30µs/call:
# 2 times (61µs+0s) by DynaLoader::bootstrap at line 206, avg 30µs/call | |||||
# spent 577µs within DynaLoader::dl_load_file which was called 2 times, avg 288µs/call:
# 2 times (577µs+0s) by DynaLoader::bootstrap at line 190, avg 288µs/call | |||||
# spent 9µs within DynaLoader::dl_undef_symbols which was called 2 times, avg 5µs/call:
# 2 times (9µs+0s) by DynaLoader::bootstrap at line 195, avg 5µs/call |