Profile of DynaLoader.pm

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NYTProf Performance Profile «line view»
For scripts/bench.pl
Run on Mon Oct 22 16:48:56 2018
Reported on Mon Oct 22 16:49:10 2018

Filename | /usr/lib/x86_64-linux-gnu/perl/5.26/DynaLoader.pm
Statements | Executed 64 statements in 2.83ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
1 | 1 | 1 | 1.49ms | 3.45ms | DynaLoader::::BEGIN@21DynaLoader::BEGIN@21
1 | 1 | 1 | 104µs | 342µs | DynaLoader::::bootstrapDynaLoader::bootstrap
1 | 1 | 1 | 100µs | 100µs | DynaLoader::::dl_load_fileDynaLoader::dl_load_file (xsub)
2 | 2 | 1 | 32µs | 32µs | DynaLoader::::CORE:substDynaLoader::CORE:subst (opcode)
7 | 1 | 1 | 31µs | 31µs | DynaLoader::::CORE:ftdirDynaLoader::CORE:ftdir (opcode)
1 | 1 | 1 | 20µs | 20µs | DynaLoader::::BEGIN@17DynaLoader::BEGIN@17
1 | 1 | 1 | 5µs | 5µs | DynaLoader::::CORE:ftfileDynaLoader::CORE:ftfile (opcode)
1 | 1 | 1 | 4µs | 4µs | DynaLoader::::CORE:ftsizeDynaLoader::CORE:ftsize (opcode)
1 | 1 | 1 | 4µs | 4µs | DynaLoader::::dl_install_xsubDynaLoader::dl_install_xsub (xsub)
1 | 1 | 1 | 3µs | 3µs | DynaLoader::::dl_find_symbolDynaLoader::dl_find_symbol (xsub)
1 | 1 | 1 | 2µs | 2µs | DynaLoader::::dl_load_flagsDynaLoader::dl_load_flags
0 | 0 | 0 | 0s | 0s | DynaLoader::::bootstrap_inheritDynaLoader::bootstrap_inherit
0 | 0 | 0 | 0s | 0s | DynaLoader::::croakDynaLoader::croak
0 | 0 | 0 | 0s | 0s | DynaLoader::::dl_expandspecDynaLoader::dl_expandspec
0 | 0 | 0 | 0s | 0s | DynaLoader::::dl_find_symbol_anywhereDynaLoader::dl_find_symbol_anywhere
0 | 0 | 0 | 0s | 0s | DynaLoader::::dl_findfileDynaLoader::dl_findfile

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 DynaLoader_pm.PL, this file is unique for every OS
2 |  |  |  |  |
3 |  |  |  |  | package DynaLoader;
4 |  |  |  |  |
5 |  |  |  |  | # And Gandalf said: 'Many folk like to know beforehand what is to
6 |  |  |  |  | # be set on the table; but those who have laboured to prepare the
7 |  |  |  |  | # feast like to keep their secret; for wonder makes the words of
8 |  |  |  |  | # praise louder.'
9 |  |  |  |  |
10 |  |  |  |  | # (Quote from Tolkien suggested by Anno Siegel.)
11 |  |  |  |  | #
12 |  |  |  |  | # See pod text at end of file for documentation.
13 |  |  |  |  | # See also ext/DynaLoader/README in source tree for other information.
14 |  |  |  |  | #
15 |  |  |  |  | # Tim.Bunce@ig.co.uk, August 1994
16 |  |  |  |  |
17 |  |  |  |  | # spent 20µs within DynaLoader::BEGIN@17 which was called: # once (20µs+0s) by main::BEGIN@27 at line 19 BEGIN {
18 | 1 | 11µs |  |  | $VERSION = '1.42';
19 | 1 | 52µs | 1 | 20µs | } # spent 20µs making 1 call to DynaLoader::BEGIN@17
20 |  |  |  |  |
21 | 2 | 2.34ms | 2 | 3.47ms | # spent 3.45ms (1.49+1.97) within DynaLoader::BEGIN@21 which was called: # once (1.49ms+1.97ms) by main::BEGIN@27 at line 21 use Config; # spent 3.45ms making 1 call to DynaLoader::BEGIN@21 # spent 17µs making 1 call to Config::import
22 |  |  |  |  |
23 |  |  |  |  | # enable debug/trace messages from DynaLoader perl code
24 | 1 | 2µs |  |  | $dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug;
25 |  |  |  |  |
26 |  |  |  |  | #
27 |  |  |  |  | # Flags to alter dl_load_file behaviour. Assigned bits:
28 |  |  |  |  | # 0x01 make symbols available for linking later dl_load_file's.
29 |  |  |  |  | # (only known to work on Solaris 2 using dlopen(RTLD_GLOBAL))
30 |  |  |  |  | # (ignored under VMS; effect is built-in to image linking)
31 |  |  |  |  | # (ignored under Android; the linker always uses RTLD_LOCAL)
32 |  |  |  |  | #
33 |  |  |  |  | # This is called as a class method $module->dl_load_flags. The
34 |  |  |  |  | # definition here will be inherited and result on "default" loading
35 |  |  |  |  | # behaviour unless a sub-class of DynaLoader defines its own version.
36 |  |  |  |  | #
37 |  |  |  |  |
38 | 1 | 3µs |  |  | # spent 2µs within DynaLoader::dl_load_flags which was called: # once (2µs+0s) by DynaLoader::bootstrap at line 185 sub dl_load_flags { 0x00 }
39 |  |  |  |  |
40 | 1 | 31µs | 3 | 22µs | ($dl_dlext, $dl_so, $dlsrc) = @Config::Config{qw(dlext so dlsrc)}; # spent 22µs making 3 calls to Config::FETCH, avg 8µs/call
41 |  |  |  |  |
42 | 1 | 300ns |  |  | $do_expand = 0;
43 |  |  |  |  |
44 | 1 | 1µs |  |  | @dl_require_symbols = (); # names of symbols we need
45 | 1 | 400ns |  |  | @dl_library_path = (); # path to look for files
46 |  |  |  |  |
47 |  |  |  |  | #XSLoader.pm may have added elements before we were required
48 |  |  |  |  | #@dl_shared_objects = (); # shared objects for symbols we have
49 |  |  |  |  | #@dl_librefs = (); # things we have loaded
50 |  |  |  |  | #@dl_modules = (); # Modules we have loaded
51 |  |  |  |  |
52 |  |  |  |  | # Initialise @dl_library_path with the 'standard' library path
53 |  |  |  |  | # for this platform as determined by Configure.
54 |  |  |  |  |
55 | 1 | 10µs | 1 | 2µs | push(@dl_library_path, split(' ', $Config::Config{libpth})); # spent 2µs making 1 call to Config::FETCH
56 |  |  |  |  |
57 | 1 | 3µs | 1 | 3µs | my $ldlibpthname = $Config::Config{ldlibpthname}; # spent 3µs making 1 call to Config::FETCH
58 | 1 | 3µs | 1 | 1µs | my $ldlibpthname_defined = defined $Config::Config{ldlibpthname}; # spent 1µs making 1 call to Config::FETCH
59 | 1 | 2µs | 1 | 2µs | my $pthsep = $Config::Config{path_sep}; # spent 2µs making 1 call to Config::FETCH
60 |  |  |  |  |
61 |  |  |  |  | # Add to @dl_library_path any extra directories we can gather from environment
62 |  |  |  |  | # during runtime.
63 |  |  |  |  |
64 | 1 | 1µs |  |  | if ($ldlibpthname_defined &&
65 |  |  |  |  | exists $ENV{$ldlibpthname}) {
66 |  |  |  |  | push(@dl_library_path, split(/$pthsep/, $ENV{$ldlibpthname}));
67 |  |  |  |  | }
68 |  |  |  |  |
69 |  |  |  |  | # E.g. HP-UX supports both its native SHLIB_PATH *and* LD_LIBRARY_PATH.
70 |  |  |  |  |
71 | 1 | 600ns |  |  | if ($ldlibpthname_defined &&
72 |  |  |  |  | $ldlibpthname ne 'LD_LIBRARY_PATH' &&
73 |  |  |  |  | exists $ENV{LD_LIBRARY_PATH}) {
74 |  |  |  |  | push(@dl_library_path, split(/$pthsep/, $ENV{LD_LIBRARY_PATH}));
75 |  |  |  |  | }
76 |  |  |  |  |
77 |  |  |  |  | # No prizes for guessing why we don't say 'bootstrap DynaLoader;' here.
78 |  |  |  |  | # NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB
79 | 1 | 1µs |  |  | boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) &&
80 |  |  |  |  | !defined(&dl_error);
81 |  |  |  |  |
82 | 1 | 300ns |  |  | if ($dl_debug) {
83 |  |  |  |  | print STDERR "DynaLoader.pm loaded (@INC, @dl_library_path)\n";
84 |  |  |  |  | print STDERR "DynaLoader not linked into this perl\n"
85 |  |  |  |  | unless defined(&boot_DynaLoader);
86 |  |  |  |  | }
87 |  |  |  |  |
88 | 1 | 29µs |  |  | 1; # End of main code
89 |  |  |  |  |
90 |  |  |  |  | sub croak { require Carp; Carp::croak(@_) }
91 |  |  |  |  |
92 |  |  |  |  | sub bootstrap_inherit {
93 |  |  |  |  | my $module = $_[0];
94 |  |  |  |  | local *isa = *{"$module\::ISA"};
95 |  |  |  |  | local @isa = (@isa, 'DynaLoader');
96 |  |  |  |  | # Cannot goto due to delocalization. Will report errors on a wrong line?
97 |  |  |  |  | bootstrap(@_);
98 |  |  |  |  | }
99 |  |  |  |  |
100 |  |  |  |  | # spent 342µs (104+238) within DynaLoader::bootstrap which was called: # once (104µs+238µs) by main::BEGIN@27 at line 72 of Time/HiRes.pm sub bootstrap {
101 |  |  |  |  | # use local vars to enable $module.bs script to edit values
102 | 1 | 2µs |  |  | local(@args) = @_;
103 | 1 | 800ns |  |  | local($module) = $args[0];
104 | 1 | 500ns |  |  | local(@dirs, $file);
105 |  |  |  |  |
106 | 1 | 400ns |  |  | unless ($module) {
107 |  |  |  |  | require Carp;
108 |  |  |  |  | Carp::confess("Usage: DynaLoader::bootstrap(module)");
109 |  |  |  |  | }
110 |  |  |  |  |
111 |  |  |  |  | # A common error on platforms which don't support dynamic loading.
112 |  |  |  |  | # Since it's fatal and potentially confusing we give a detailed message.
113 | 1 | 400ns |  |  | croak("Can't load module $module, dynamic loading not available in this perl.\n".
114 |  |  |  |  | " (You may need to build a new perl executable which either supports\n".
115 |  |  |  |  | " dynamic loading or has the $module module statically linked into it.)\n")
116 |  |  |  |  | unless defined(&dl_load_file);
117 |  |  |  |  |
118 |  |  |  |  |
119 | 1 | 2µs |  |  | my @modparts = split(/::/,$module);
120 | 1 | 800ns |  |  | my $modfname = $modparts[-1];
121 | 1 | 400ns |  |  | my $modfname_orig = $modfname; # For .bs file search
122 |  |  |  |  |
123 |  |  |  |  | # Some systems have restrictions on files names for DLL's etc.
124 |  |  |  |  | # mod2fname returns appropriate file base name (typically truncated)
125 |  |  |  |  | # It may also edit @modparts if required.
126 | 1 | 400ns |  |  | $modfname = &mod2fname(\@modparts) if defined &mod2fname;
127 |  |  |  |  |
128 |  |  |  |  |
129 |  |  |  |  |
130 | 1 | 2µs |  |  | my $modpname = join('/',@modparts);
131 |  |  |  |  |
132 | 1 | 300ns |  |  | print STDERR "DynaLoader::bootstrap for $module ",
133 |  |  |  |  | "(auto/$modpname/$modfname.$dl_dlext)\n"
134 |  |  |  |  | if $dl_debug;
135 |  |  |  |  |
136 | 1 | 200ns |  |  | my $dir;
137 | 1 | 2µs |  |  | foreach (@INC) {
138 |  |  |  |  |
139 | 7 | 6µs |  |  | $dir = "$_/auto/$modpname";
140 |  |  |  |  |
141 | 7 | 52µs | 7 | 31µs | next unless -d $dir; # skip over uninteresting directories # spent 31µs making 7 calls to DynaLoader::CORE:ftdir, avg 4µs/call
142 |  |  |  |  |
143 |  |  |  |  | # check for common cases to avoid autoload of dl_findfile
144 | 1 | 2µs |  |  | my $try = "$dir/$modfname.$dl_dlext";
145 | 1 | 13µs | 1 | 5µs | last if $file = ($do_expand) ? dl_expandspec($try) : ((-f $try) && $try); # spent 5µs making 1 call to DynaLoader::CORE:ftfile
146 |  |  |  |  |
147 |  |  |  |  | # no luck here, save dir for possible later dl_findfile search
148 |  |  |  |  | push @dirs, $dir;
149 |  |  |  |  | }
150 |  |  |  |  | # last resort, let dl_findfile have a go in all known locations
151 | 1 | 200ns |  |  | $file = dl_findfile(map("-L$_",@dirs,@INC), $modfname) unless $file;
152 |  |  |  |  |
153 | 1 | 200ns |  |  | croak("Can't locate loadable object for module $module in \@INC (\@INC contains: @INC)")
154 |  |  |  |  | unless $file; # wording similar to error from 'require'
155 |  |  |  |  |
156 |  |  |  |  |
157 | 1 | 1µs |  |  | my $bootname = "boot_$module";
158 | 1 | 10µs | 1 | 6µs | $bootname =~ s/\W/_/g; # spent 6µs making 1 call to DynaLoader::CORE:subst
159 | 1 | 800ns |  |  | @dl_require_symbols = ($bootname);
160 |  |  |  |  |
161 |  |  |  |  | # Execute optional '.bootstrap' perl script for this module.
162 |  |  |  |  | # The .bs file can be used to configure @dl_resolve_using etc to
163 |  |  |  |  | # match the needs of the individual module on this architecture.
164 |  |  |  |  | # N.B. The .bs file does not following the naming convention used
165 |  |  |  |  | # by mod2fname.
166 | 1 | 1µs |  |  | my $bs = "$dir/$modfname_orig";
167 | 1 | 29µs | 1 | 26µs | $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library # spent 26µs making 1 call to DynaLoader::CORE:subst
168 | 1 | 9µs | 1 | 4µs | if (-s $bs) { # only read file if it's not empty # spent 4µs making 1 call to DynaLoader::CORE:ftsize
169 |  |  |  |  | print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug;
170 |  |  |  |  | eval { local @INC = ('.'); do $bs; };
171 |  |  |  |  | warn "$bs: $@\n" if $@;
172 |  |  |  |  | }
173 |  |  |  |  |
174 | 1 | 200ns |  |  | my $boot_symbol_ref;
175 |  |  |  |  |
176 |  |  |  |  |
177 |  |  |  |  |
178 |  |  |  |  | # Many dynamic extension loading problems will appear to come from
179 |  |  |  |  | # this section of code: XYZ failed at line 123 of DynaLoader.pm.
180 |  |  |  |  | # Often these errors are actually occurring in the initialisation
181 |  |  |  |  | # C code of the extension XS file. Perl reports the error as being
182 |  |  |  |  | # in this perl code simply because this was the last perl code
183 |  |  |  |  | # it executed.
184 |  |  |  |  |
185 | 1 | 6µs | 1 | 2µs | my $flags = $module->dl_load_flags; # spent 2µs making 1 call to DynaLoader::dl_load_flags
186 |  |  |  |  |
187 | 1 | 108µs | 1 | 100µs | my $libref = dl_load_file($file, $flags) or # spent 100µs making 1 call to DynaLoader::dl_load_file
188 |  |  |  |  | croak("Can't load '$file' for module $module: ".dl_error());
189 |  |  |  |  |
190 | 1 | 900ns |  |  | push(@dl_librefs,$libref); # record loaded object
191 |  |  |  |  |
192 | 1 | 7µs | 1 | 3µs | $boot_symbol_ref = dl_find_symbol($libref, $bootname) or # spent 3µs making 1 call to DynaLoader::dl_find_symbol
193 |  |  |  |  | croak("Can't find '$bootname' symbol in $file\n");
194 |  |  |  |  |
195 | 1 | 600ns |  |  | push(@dl_modules, $module); # record loaded module
196 |  |  |  |  |
197 | 1 | 11µs | 1 | 4µs | boot: # spent 4µs making 1 call to DynaLoader::dl_install_xsub
198 |  |  |  |  | my $xs = dl_install_xsub("${module}::bootstrap", $boot_symbol_ref, $file);
199 |  |  |  |  |
200 |  |  |  |  | # See comment block above
201 |  |  |  |  |
202 | 1 | 400ns |  |  | push(@dl_shared_objects, $file); # record files loaded
203 |  |  |  |  |
204 | 1 | 68µs | 1 | 57µs | &$xs(@args); # spent 57µs making 1 call to Time::HiRes::bootstrap
205 |  |  |  |  | }
206 |  |  |  |  |
207 |  |  |  |  | sub dl_findfile {
208 |  |  |  |  | # This function does not automatically consider the architecture
209 |  |  |  |  | # or the perl library auto directories.
210 |  |  |  |  | my (@args) = @_;
211 |  |  |  |  | my (@dirs, $dir); # which directories to search
212 |  |  |  |  | my (@found); # full paths to real files we have found
213 |  |  |  |  | #my $dl_ext= 'so'; # $Config::Config{'dlext'} suffix for perl extensions
214 |  |  |  |  | #my $dl_so = 'so'; # $Config::Config{'so'} suffix for shared libraries
215 |  |  |  |  |
216 |  |  |  |  | print STDERR "dl_findfile(@args)\n" if $dl_debug;
217 |  |  |  |  |
218 |  |  |  |  | # accumulate directories but process files as they appear
219 |  |  |  |  | arg: foreach(@args) {
220 |  |  |  |  | # Special fast case: full filepath requires no search
221 |  |  |  |  |
222 |  |  |  |  |
223 |  |  |  |  | if (m:/: && -f $_) {
224 |  |  |  |  | push(@found,$_);
225 |  |  |  |  | last arg unless wantarray;
226 |  |  |  |  | next;
227 |  |  |  |  | }
228 |  |  |  |  |
229 |  |  |  |  |
230 |  |  |  |  | # Deal with directories first:
231 |  |  |  |  | # Using a -L prefix is the preferred option (faster and more robust)
232 |  |  |  |  | if (m:^-L:) { s/^-L//; push(@dirs, $_); next; }
233 |  |  |  |  |
234 |  |  |  |  | # Otherwise we try to try to spot directories by a heuristic
235 |  |  |  |  | # (this is a more complicated issue than it first appears)
236 |  |  |  |  | if (m:/: && -d $_) { push(@dirs, $_); next; }
237 |  |  |  |  |
238 |  |  |  |  |
239 |  |  |  |  |
240 |  |  |  |  | # Only files should get this far...
241 |  |  |  |  | my(@names, $name); # what filenames to look for
242 |  |  |  |  | if (m:-l: ) { # convert -lname to appropriate library name
243 |  |  |  |  | s/-l//;
244 |  |  |  |  | push(@names,"lib$_.$dl_so");
245 |  |  |  |  | push(@names,"lib$_.a");
246 |  |  |  |  | } else { # Umm, a bare name. Try various alternatives:
247 |  |  |  |  | # these should be ordered with the most likely first
248 |  |  |  |  | push(@names,"$_.$dl_dlext") unless m/\.$dl_dlext$/o;
249 |  |  |  |  | push(@names,"$_.$dl_so") unless m/\.$dl_so$/o;
250 |  |  |  |  |
251 |  |  |  |  | push(@names,"lib$_.$dl_so") unless m:/:;
252 |  |  |  |  | push(@names, $_);
253 |  |  |  |  | }
254 |  |  |  |  | my $dirsep = '/';
255 |  |  |  |  |
256 |  |  |  |  | foreach $dir (@dirs, @dl_library_path) {
257 |  |  |  |  | next unless -d $dir;
258 |  |  |  |  |
259 |  |  |  |  | foreach $name (@names) {
260 |  |  |  |  | my($file) = "$dir$dirsep$name";
261 |  |  |  |  | print STDERR " checking in $dir for $name\n" if $dl_debug;
262 |  |  |  |  | $file = ($do_expand) ? dl_expandspec($file) : (-f $file && $file);
263 |  |  |  |  | #$file = _check_file($file);
264 |  |  |  |  | if ($file) {
265 |  |  |  |  | push(@found, $file);
266 |  |  |  |  | next arg; # no need to look any further
267 |  |  |  |  | }
268 |  |  |  |  | }
269 |  |  |  |  | }
270 |  |  |  |  | }
271 |  |  |  |  | if ($dl_debug) {
272 |  |  |  |  | foreach(@dirs) {
273 |  |  |  |  | print STDERR " dl_findfile ignored non-existent directory: $_\n" unless -d $_;
274 |  |  |  |  | }
275 |  |  |  |  | print STDERR "dl_findfile found: @found\n";
276 |  |  |  |  | }
277 |  |  |  |  | return $found[0] unless wantarray;
278 |  |  |  |  | @found;
279 |  |  |  |  | }
280 |  |  |  |  |
281 |  |  |  |  | sub dl_expandspec {
282 |  |  |  |  | my($spec) = @_;
283 |  |  |  |  | # Optional function invoked if DynaLoader.pm sets $do_expand.
284 |  |  |  |  | # Most systems do not require or use this function.
285 |  |  |  |  | # Some systems may implement it in the dl_*.xs file in which case
286 |  |  |  |  | # this Perl version should be excluded at build time.
287 |  |  |  |  |
288 |  |  |  |  | # This function is designed to deal with systems which treat some
289 |  |  |  |  | # 'filenames' in a special way. For example VMS 'Logical Names'
290 |  |  |  |  | # (something like unix environment variables - but different).
291 |  |  |  |  | # This function should recognise such names and expand them into
292 |  |  |  |  | # full file paths.
293 |  |  |  |  | # Must return undef if $spec is invalid or file does not exist.
294 |  |  |  |  |
295 |  |  |  |  | my $file = $spec; # default output to input
296 |  |  |  |  |
297 |  |  |  |  | return undef unless -f $file;
298 |  |  |  |  | print STDERR "dl_expandspec($spec) => $file\n" if $dl_debug;
299 |  |  |  |  | $file;
300 |  |  |  |  | }
301 |  |  |  |  |
302 |  |  |  |  | sub dl_find_symbol_anywhere
303 |  |  |  |  | {
304 |  |  |  |  | my $sym = shift;
305 |  |  |  |  | my $libref;
306 |  |  |  |  | foreach $libref (@dl_librefs) {
307 |  |  |  |  | my $symref = dl_find_symbol($libref,$sym,1);
308 |  |  |  |  | return $symref if $symref;
309 |  |  |  |  | }
310 |  |  |  |  | return undef;
311 |  |  |  |  | }
312 |  |  |  |  |
313 |  |  |  |  | __END__
|  |  |  |  | # spent 31µs within DynaLoader::CORE:ftdir which was called 7 times, avg 4µs/call: # 7 times (31µs+0s) by DynaLoader::bootstrap at line 141, avg 4µs/call sub DynaLoader::CORE:ftdir; # opcode
|  |  |  |  | # spent 5µs within DynaLoader::CORE:ftfile which was called: # once (5µs+0s) by DynaLoader::bootstrap at line 145 sub DynaLoader::CORE:ftfile; # opcode
|  |  |  |  | # spent 4µs within DynaLoader::CORE:ftsize which was called: # once (4µs+0s) by DynaLoader::bootstrap at line 168 sub DynaLoader::CORE:ftsize; # opcode
|  |  |  |  | # spent 32µs within DynaLoader::CORE:subst which was called 2 times, avg 16µs/call: # once (26µs+0s) by DynaLoader::bootstrap at line 167 # once (6µs+0s) by DynaLoader::bootstrap at line 158 sub DynaLoader::CORE:subst; # opcode
|  |  |  |  | # spent 3µs within DynaLoader::dl_find_symbol which was called: # once (3µs+0s) by DynaLoader::bootstrap at line 192 sub DynaLoader::dl_find_symbol; # xsub
|  |  |  |  | # spent 4µs within DynaLoader::dl_install_xsub which was called: # once (4µs+0s) by DynaLoader::bootstrap at line 197 sub DynaLoader::dl_install_xsub; # xsub
|  |  |  |  | # spent 100µs within DynaLoader::dl_load_file which was called: # once (100µs+0s) by DynaLoader::bootstrap at line 187 sub DynaLoader::dl_load_file; # xsub