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For conv.pl
  Run on Sun Nov 14 22:50:31 2010
Reported on Sun Nov 14 22:51:23 2010

Filename/usr/lib/perl/5.10/DynaLoader.pm
StatementsExecuted 156 statements in 5.09ms
Subroutines
Calls P F Exclusive
Time		 Inclusive
Time		 Subroutine
3111.10ms1.10msDynaLoader::::dl_load_fileDynaLoader::dl_load_file (xsub)
111833µs965µsDynaLoader::::BEGIN@24DynaLoader::BEGIN@24
333475µs3.26msDynaLoader::::bootstrapDynaLoader::bootstrap
1911105µs105µsDynaLoader::::CORE:ftdirDynaLoader::CORE:ftdir (opcode)
62195µs95µsDynaLoader::::CORE:substDynaLoader::CORE:subst (opcode)
31127µs27µsDynaLoader::::dl_install_xsubDynaLoader::dl_install_xsub (xsub)
31120µs20µsDynaLoader::::CORE:ftsizeDynaLoader::CORE:ftsize (opcode)
31119µs19µsDynaLoader::::CORE:ftfileDynaLoader::CORE:ftfile (opcode)
11116µs16µsDynaLoader::::BEGIN@17DynaLoader::BEGIN@17
31113µs13µsDynaLoader::::dl_find_symbolDynaLoader::dl_find_symbol (xsub)
31112µs12µsDynaLoader::::dl_load_flagsDynaLoader::dl_load_flags
3118µs8µsDynaLoader::::dl_undef_symbolsDynaLoader::dl_undef_symbols (xsub)
0000s0sDynaLoader::::bootstrap_inheritDynaLoader::bootstrap_inherit
0000s0sDynaLoader::::croakDynaLoader::croak
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
2
3package 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 16µs within DynaLoader::BEGIN@17 which was called: # once (16µs+0s) by XML::LibXML::BEGIN@28 at line 19
BEGIN {
1818µs $VERSION = '1.10';
19149µs116µs}
# spent 16µs making 1 call to DynaLoader::BEGIN@17
20
211143µsrequire AutoLoader;
2212µs*AUTOLOAD = \&AutoLoader::AUTOLOAD;
23
2431.51ms2988µs
# spent 965µs (833+132) within DynaLoader::BEGIN@24 which was called: # once (833µs+132µs) by XML::LibXML::BEGIN@28 at line 24
use Config;
# spent 965µs making 1 call to DynaLoader::BEGIN@24 # spent 23µs making 1 call to Config::import
25
26# enable debug/trace messages from DynaLoader perl code
2712µs$dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug;
28
29#
30# Flags to alter dl_load_file behaviour. Assigned bits:
31# 0x01 make symbols available for linking later dl_load_file's.
32# (only known to work on Solaris 2 using dlopen(RTLD_GLOBAL))
33# (ignored under VMS; effect is built-in to image linking)
34#
35# This is called as a class method $module->dl_load_flags. The
36# definition here will be inherited and result on "default" loading
37# behaviour unless a sub-class of DynaLoader defines its own version.
38#
39
40316µs
# spent 12µs within DynaLoader::dl_load_flags which was called 3 times, avg 4µs/call: # 3 times (12µs+0s) by DynaLoader::bootstrap at line 192, avg 4µs/call
sub dl_load_flags { 0x00 }
41
42130µs33.33ms($dl_dlext, $dl_so, $dlsrc) = @Config::Config{qw(dlext so dlsrc)};
# spent 3.33ms making 3 calls to Config::FETCH, avg 1.11ms/call
43
4411µs$do_expand = 0;
45
4612µs@dl_require_symbols = (); # names of symbols we need
4711µs@dl_resolve_using = (); # names of files to link with
4811µs@dl_library_path = (); # path to look for files
49
50#XSLoader.pm may have added elements before we were required
51#@dl_shared_objects = (); # shared objects for symbols we have
52#@dl_librefs = (); # things we have loaded
53#@dl_modules = (); # Modules we have loaded
54
55# This is a fix to support DLD's unfortunate desire to relink -lc
5611µs@dl_resolve_using = dl_findfile('-lc') if $dlsrc eq "dl_dld.xs";
57
58# Initialise @dl_library_path with the 'standard' library path
59# for this platform as determined by Configure.
60
61113µs16µspush(@dl_library_path, split(' ', $Config::Config{libpth}));
# spent 6µs making 1 call to Config::FETCH
62
6318µs15µsmy $ldlibpthname = $Config::Config{ldlibpthname};
# spent 5µs making 1 call to Config::FETCH
6418µs16µsmy $ldlibpthname_defined = defined $Config::Config{ldlibpthname};
# spent 6µs making 1 call to Config::FETCH
6516µs15µsmy $pthsep = $Config::Config{path_sep};
# spent 5µs making 1 call to Config::FETCH
66
67# Add to @dl_library_path any extra directories we can gather from environment
68# during runtime.
69
7012µsif ($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
7711µsif ($ldlibpthname_defined &&
78 $ldlibpthname ne 'LD_LIBRARY_PATH' &&
79 exists $ENV{LD_LIBRARY_PATH}) {
80 push(@dl_library_path, split(/$pthsep/, $ENV{LD_LIBRARY_PATH}));
81}
82
83# No prizes for guessing why we don't say 'bootstrap DynaLoader;' here.
84# NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB
8512µsboot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) &&
86 !defined(&dl_error);
87
8811µsif ($dl_debug) {
89 print STDERR "DynaLoader.pm loaded (@INC, @dl_library_path)\n";
90 print STDERR "DynaLoader not linked into this perl\n"
91 unless defined(&boot_DynaLoader);
92}
93
94131µs1; # End of main code
95
96sub croak { require Carp; Carp::croak(@_) }
97
98sub bootstrap_inherit {
99 my $module = $_[0];
100 local *isa = *{"$module\::ISA"};
101 local @isa = (@isa, 'DynaLoader');
102 # Cannot goto due to delocalization. Will report errors on a wrong line?
103 bootstrap(@_);
104}
105
106# The bootstrap function cannot be autoloaded (without complications)
107# so we define it here:
108
109
# spent 3.26ms (475µs+2.78) within DynaLoader::bootstrap which was called 3 times, avg 1.09ms/call: # once (154µs+1.81ms) by XML::LibXML::BEGIN@28 at line 147 of XML/LibXML.pm # once (160µs+710µs) by MARC::Charset::BEGIN@10 at line 42 of Unicode/Normalize.pm # once (161µs+263µs) by MARC::Charset::Table::BEGIN@40 at line 67 of Storable.pm
sub bootstrap {
110 # use local vars to enable $module.bs script to edit values
111311µs local(@args) = @_;
11234µs local($module) = $args[0];
11334µs local(@dirs, $file);
114
11534µs unless ($module) {
116 require Carp;
117 Carp::confess("Usage: DynaLoader::bootstrap(module)");
118 }
119
120 # A common error on platforms which don't support dynamic loading.
121 # Since it's fatal and potentially confusing we give a detailed message.
12235µs croak("Can't load module $module, dynamic loading not available in this perl.\n".
123 " (You may need to build a new perl executable which either supports\n".
124 " dynamic loading or has the $module module statically linked into it.)\n")
125 unless defined(&dl_load_file);
126
127
128313µs my @modparts = split(/::/,$module);
12935µs 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.
13435µs $modfname = &mod2fname(\@modparts) if defined &mod2fname;
135
136
137
13839µs my $modpname = join('/',@modparts);
139
14035µs print STDERR "DynaLoader::bootstrap for $module ",
141 "(auto/$modpname/$modfname.$dl_dlext)\n"
142 if $dl_debug;
143
144321µs foreach (@INC) {
145
146
1471934µs my $dir = "$_/auto/$modpname";
148
149
15019187µs19105µs next unless -d $dir; # skip over uninteresting directories
# spent 105µs making 19 calls to DynaLoader::CORE:ftdir, avg 6µs/call
151
152 # check for common cases to avoid autoload of dl_findfile
153310µs my $try = "$dir/$modfname.$dl_dlext";
154339µs319µs last if $file = ($do_expand) ? dl_expandspec($try) : ((-f $try) && $try);
# spent 19µs making 3 calls to DynaLoader::CORE:ftfile, avg 6µs/call
155
156 # no luck here, save dir for possible later dl_findfile search
157 push @dirs, $dir;
158 }
159 # last resort, let dl_findfile have a go in all known locations
16033µs $file = dl_findfile(map("-L$_",@dirs,@INC), $modfname) unless $file;
161
16234µs croak("Can't locate loadable object for module $module in \@INC (\@INC contains: @INC)")
163 unless $file; # wording similar to error from 'require'
164
165
16637µs my $bootname = "boot_$module";
167327µs311µs $bootname =~ s/\W/_/g;
# spent 11µs making 3 calls to DynaLoader::CORE:subst, avg 4µs/call
16836µs @dl_require_symbols = ($bootname);
169
170 # Execute optional '.bootstrap' perl script for this module.
171 # The .bs file can be used to configure @dl_resolve_using etc to
172 # match the needs of the individual module on this architecture.
17333µs my $bs = $file;
174397µs384µs $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library
# spent 84µs making 3 calls to DynaLoader::CORE:subst, avg 28µs/call
175335µs320µs if (-s $bs) { # only read file if it's not empty
# spent 20µs making 3 calls to DynaLoader::CORE:ftsize, avg 7µs/call
176 print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug;
177 eval { do $bs; };
178 warn "$bs: $@\n" if $@;
179 }
180
18133µs my $boot_symbol_ref;
182
183
184
185 # Many dynamic extension loading problems will appear to come from
186 # this section of code: XYZ failed at line 123 of DynaLoader.pm.
187 # Often these errors are actually occurring in the initialisation
188 # C code of the extension XS file. Perl reports the error as being
189 # in this perl code simply because this was the last perl code
190 # it executed.
191
19231.15ms61.11ms my $libref = dl_load_file($file, $module->dl_load_flags) or
# spent 1.10ms making 3 calls to DynaLoader::dl_load_file, avg 367µs/call # spent 12µs making 3 calls to DynaLoader::dl_load_flags, avg 4µs/call
193 croak("Can't load '$file' for module $module: ".dl_error());
194
19535µs push(@dl_librefs,$libref); # record loaded object
196
197324µs38µs my @unresolved = dl_undef_symbols();
# spent 8µs making 3 calls to DynaLoader::dl_undef_symbols, avg 3µs/call
19834µs if (@unresolved) {
199 require Carp;
200 Carp::carp("Undefined symbols present after loading $file: @unresolved\n");
201 }
202
203330µs313µs $boot_symbol_ref = dl_find_symbol($libref, $bootname) or
# spent 13µs making 3 calls to DynaLoader::dl_find_symbol, avg 4µs/call
204 croak("Can't find '$bootname' symbol in $file\n");
205
20637µs push(@dl_modules, $module); # record loaded module
207
208346µs327µs boot:
# spent 27µs making 3 calls to DynaLoader::dl_install_xsub, avg 9µs/call
209 my $xs = dl_install_xsub("${module}::bootstrap", $boot_symbol_ref, $file);
210
211 # See comment block above
212
21337µs push(@dl_shared_objects, $file); # record files loaded
214
21531.44ms31.38ms &$xs(@args);
# spent 1.20ms making 1 call to XML::LibXML::bootstrap # spent 106µs making 1 call to Unicode::Normalize::bootstrap # spent 78µs making 1 call to Storable::bootstrap
216}
217
218#sub _check_file { # private utility to handle dl_expandspec vs -f tests
219# my($file) = @_;
220# return $file if (!$do_expand && -f $file); # the common case
221# return $file if ( $do_expand && ($file=dl_expandspec($file)));
222# return undef;
223#}
224
225# Let autosplit and the autoloader deal with these functions:
 
# spent 105µs within DynaLoader::CORE:ftdir which was called 19 times, avg 6µs/call: # 19 times (105µs+0s) by DynaLoader::bootstrap at line 150, avg 6µs/call
sub DynaLoader::CORE:ftdir; # opcode
# spent 19µs within DynaLoader::CORE:ftfile which was called 3 times, avg 6µs/call: # 3 times (19µs+0s) by DynaLoader::bootstrap at line 154, avg 6µs/call
sub DynaLoader::CORE:ftfile; # opcode
# spent 20µs within DynaLoader::CORE:ftsize which was called 3 times, avg 7µs/call: # 3 times (20µs+0s) by DynaLoader::bootstrap at line 175, avg 7µs/call
sub DynaLoader::CORE:ftsize; # opcode
# spent 95µs within DynaLoader::CORE:subst which was called 6 times, avg 16µs/call: # 3 times (84µs+0s) by DynaLoader::bootstrap at line 174, avg 28µs/call # 3 times (11µs+0s) by DynaLoader::bootstrap at line 167, avg 4µs/call
sub DynaLoader::CORE:subst; # opcode
# spent 13µs within DynaLoader::dl_find_symbol which was called 3 times, avg 4µs/call: # 3 times (13µs+0s) by DynaLoader::bootstrap at line 203, avg 4µs/call
sub DynaLoader::dl_find_symbol; # xsub
# spent 27µs within DynaLoader::dl_install_xsub which was called 3 times, avg 9µs/call: # 3 times (27µs+0s) by DynaLoader::bootstrap at line 208, avg 9µs/call
sub DynaLoader::dl_install_xsub; # xsub
# spent 1.10ms within DynaLoader::dl_load_file which was called 3 times, avg 367µs/call: # 3 times (1.10ms+0s) by DynaLoader::bootstrap at line 192, avg 367µs/call
sub DynaLoader::dl_load_file; # xsub
# spent 8µs within DynaLoader::dl_undef_symbols which was called 3 times, avg 3µs/call: # 3 times (8µs+0s) by DynaLoader::bootstrap at line 197, avg 3µs/call
sub DynaLoader::dl_undef_symbols; # xsub
Report produced by the NYTProf 4.04 Perl profiler, developed by Tim Bunce and Adam Kaplan.