Filename | /usr/share/perl/5.20/AutoLoader.pm |
Statements | Executed 18 statements in 975µs |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
1 | 1 | 1 | 12µs | 23µs | BEGIN@3 | AutoLoader::
1 | 1 | 1 | 12µs | 12µs | BEGIN@4 | AutoLoader::
1 | 1 | 1 | 7µs | 18µs | BEGIN@146 | AutoLoader::
1 | 1 | 1 | 6µs | 14µs | BEGIN@194 | AutoLoader::
1 | 1 | 1 | 6µs | 6µs | BEGIN@13 | AutoLoader::
1 | 1 | 1 | 6µs | 14µs | BEGIN@37 | AutoLoader::
0 | 0 | 0 | 0s | 0s | AUTOLOAD | AutoLoader::
0 | 0 | 0 | 0s | 0s | __ANON__[:38] | AutoLoader::
0 | 0 | 0 | 0s | 0s | autoload_sub | AutoLoader::
0 | 0 | 0 | 0s | 0s | find_filename | AutoLoader::
0 | 0 | 0 | 0s | 0s | import | AutoLoader::
0 | 0 | 0 | 0s | 0s | unimport | AutoLoader::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
---|---|---|---|---|---|
1 | package AutoLoader; | ||||
2 | |||||
3 | 2 | 21µs | 2 | 34µs | # spent 23µs (12+11) within AutoLoader::BEGIN@3 which was called:
# once (12µs+11µs) by C4::Charset::BEGIN@24 at line 3 # spent 23µs making 1 call to AutoLoader::BEGIN@3
# spent 11µs making 1 call to strict::import |
4 | 2 | 98µs | 1 | 12µs | # spent 12µs within AutoLoader::BEGIN@4 which was called:
# once (12µs+0s) by C4::Charset::BEGIN@24 at line 4 # spent 12µs making 1 call to AutoLoader::BEGIN@4 |
5 | |||||
6 | 1 | 100ns | our($VERSION, $AUTOLOAD); | ||
7 | |||||
8 | 1 | 100ns | my $is_dosish; | ||
9 | my $is_epoc; | ||||
10 | my $is_vms; | ||||
11 | my $is_macos; | ||||
12 | |||||
13 | # spent 6µs within AutoLoader::BEGIN@13 which was called:
# once (6µs+0s) by C4::Charset::BEGIN@24 at line 19 | ||||
14 | 1 | 2µs | $is_dosish = $^O eq 'dos' || $^O eq 'os2' || $^O eq 'MSWin32' || $^O eq 'NetWare'; | ||
15 | 1 | 300ns | $is_epoc = $^O eq 'epoc'; | ||
16 | 1 | 300ns | $is_vms = $^O eq 'VMS'; | ||
17 | 1 | 400ns | $is_macos = $^O eq 'MacOS'; | ||
18 | 1 | 3µs | $VERSION = '5.74'; | ||
19 | 1 | 96µs | 1 | 6µs | } # spent 6µs making 1 call to AutoLoader::BEGIN@13 |
20 | |||||
21 | AUTOLOAD { | ||||
22 | my $sub = $AUTOLOAD; | ||||
23 | autoload_sub($sub); | ||||
24 | goto &$sub; | ||||
25 | } | ||||
26 | |||||
27 | sub autoload_sub { | ||||
28 | my $sub = shift; | ||||
29 | |||||
30 | my $filename = AutoLoader::find_filename( $sub ); | ||||
31 | |||||
32 | my $save = $@; | ||||
33 | local $!; # Do not munge the value. | ||||
34 | eval { local $SIG{__DIE__}; require $filename }; | ||||
35 | if ($@) { | ||||
36 | if (substr($sub,-9) eq '::DESTROY') { | ||||
37 | 2 | 502µs | 2 | 23µs | # spent 14µs (6+9) within AutoLoader::BEGIN@37 which was called:
# once (6µs+9µs) by C4::Charset::BEGIN@24 at line 37 # spent 14µs making 1 call to AutoLoader::BEGIN@37
# spent 9µs making 1 call to strict::unimport |
38 | *$sub = sub {}; | ||||
39 | $@ = undef; | ||||
40 | } elsif ($@ =~ /^Can't locate/) { | ||||
41 | # The load might just have failed because the filename was too | ||||
42 | # long for some old SVR3 systems which treat long names as errors. | ||||
43 | # If we can successfully truncate a long name then it's worth a go. | ||||
44 | # There is a slight risk that we could pick up the wrong file here | ||||
45 | # but autosplit should have warned about that when splitting. | ||||
46 | if ($filename =~ s/(\w{12,})\.al$/substr($1,0,11).".al"/e){ | ||||
47 | eval { local $SIG{__DIE__}; require $filename }; | ||||
48 | } | ||||
49 | } | ||||
50 | if ($@){ | ||||
51 | $@ =~ s/ at .*\n//; | ||||
52 | my $error = $@; | ||||
53 | require Carp; | ||||
54 | Carp::croak($error); | ||||
55 | } | ||||
56 | } | ||||
57 | $@ = $save; | ||||
58 | |||||
59 | return 1; | ||||
60 | } | ||||
61 | |||||
62 | sub find_filename { | ||||
63 | my $sub = shift; | ||||
64 | my $filename; | ||||
65 | # Braces used to preserve $1 et al. | ||||
66 | { | ||||
67 | # Try to find the autoloaded file from the package-qualified | ||||
68 | # name of the sub. e.g., if the sub needed is | ||||
69 | # Getopt::Long::GetOptions(), then $INC{Getopt/Long.pm} is | ||||
70 | # something like '/usr/lib/perl5/Getopt/Long.pm', and the | ||||
71 | # autoload file is '/usr/lib/perl5/auto/Getopt/Long/GetOptions.al'. | ||||
72 | # | ||||
73 | # However, if @INC is a relative path, this might not work. If, | ||||
74 | # for example, @INC = ('lib'), then $INC{Getopt/Long.pm} is | ||||
75 | # 'lib/Getopt/Long.pm', and we want to require | ||||
76 | # 'auto/Getopt/Long/GetOptions.al' (without the leading 'lib'). | ||||
77 | # In this case, we simple prepend the 'auto/' and let the | ||||
78 | # C<require> take care of the searching for us. | ||||
79 | |||||
80 | my ($pkg,$func) = ($sub =~ /(.*)::([^:]+)$/); | ||||
81 | $pkg =~ s#::#/#g; | ||||
82 | if (defined($filename = $INC{"$pkg.pm"})) { | ||||
83 | if ($is_macos) { | ||||
84 | $pkg =~ tr#/#:#; | ||||
85 | $filename = undef | ||||
86 | unless $filename =~ s#^(.*)$pkg\.pm\z#$1auto:$pkg:$func.al#s; | ||||
87 | } else { | ||||
88 | $filename = undef | ||||
89 | unless $filename =~ s#^(.*)$pkg\.pm\z#$1auto/$pkg/$func.al#s; | ||||
90 | } | ||||
91 | |||||
92 | # if the file exists, then make sure that it is a | ||||
93 | # a fully anchored path (i.e either '/usr/lib/auto/foo/bar.al', | ||||
94 | # or './lib/auto/foo/bar.al'. This avoids C<require> searching | ||||
95 | # (and failing) to find the 'lib/auto/foo/bar.al' because it | ||||
96 | # looked for 'lib/lib/auto/foo/bar.al', given @INC = ('lib'). | ||||
97 | |||||
98 | if (defined $filename and -r $filename) { | ||||
99 | unless ($filename =~ m|^/|s) { | ||||
100 | if ($is_dosish) { | ||||
101 | unless ($filename =~ m{^([a-z]:)?[\\/]}is) { | ||||
102 | if ($^O ne 'NetWare') { | ||||
103 | $filename = "./$filename"; | ||||
104 | } else { | ||||
105 | $filename = "$filename"; | ||||
106 | } | ||||
107 | } | ||||
108 | } | ||||
109 | elsif ($is_epoc) { | ||||
110 | unless ($filename =~ m{^([a-z?]:)?[\\/]}is) { | ||||
111 | $filename = "./$filename"; | ||||
112 | } | ||||
113 | } | ||||
114 | elsif ($is_vms) { | ||||
115 | # XXX todo by VMSmiths | ||||
116 | $filename = "./$filename"; | ||||
117 | } | ||||
118 | elsif (!$is_macos) { | ||||
119 | $filename = "./$filename"; | ||||
120 | } | ||||
121 | } | ||||
122 | } | ||||
123 | else { | ||||
124 | $filename = undef; | ||||
125 | } | ||||
126 | } | ||||
127 | unless (defined $filename) { | ||||
128 | # let C<require> do the searching | ||||
129 | $filename = "auto/$sub.al"; | ||||
130 | $filename =~ s#::#/#g; | ||||
131 | } | ||||
132 | } | ||||
133 | return $filename; | ||||
134 | } | ||||
135 | |||||
136 | sub import { | ||||
137 | my $pkg = shift; | ||||
138 | my $callpkg = caller; | ||||
139 | |||||
140 | # | ||||
141 | # Export symbols, but not by accident of inheritance. | ||||
142 | # | ||||
143 | |||||
144 | if ($pkg eq 'AutoLoader') { | ||||
145 | if ( @_ and $_[0] =~ /^&?AUTOLOAD$/ ) { | ||||
146 | 2 | 175µs | 2 | 29µs | # spent 18µs (7+11) within AutoLoader::BEGIN@146 which was called:
# once (7µs+11µs) by C4::Charset::BEGIN@24 at line 146 # spent 18µs making 1 call to AutoLoader::BEGIN@146
# spent 11µs making 1 call to strict::unimport |
147 | *{ $callpkg . '::AUTOLOAD' } = \&AUTOLOAD; | ||||
148 | } | ||||
149 | } | ||||
150 | |||||
151 | # | ||||
152 | # Try to find the autosplit index file. Eg., if the call package | ||||
153 | # is POSIX, then $INC{POSIX.pm} is something like | ||||
154 | # '/usr/local/lib/perl5/POSIX.pm', and the autosplit index file is in | ||||
155 | # '/usr/local/lib/perl5/auto/POSIX/autosplit.ix', so we require that. | ||||
156 | # | ||||
157 | # However, if @INC is a relative path, this might not work. If, | ||||
158 | # for example, @INC = ('lib'), then | ||||
159 | # $INC{POSIX.pm} is 'lib/POSIX.pm', and we want to require | ||||
160 | # 'auto/POSIX/autosplit.ix' (without the leading 'lib'). | ||||
161 | # | ||||
162 | |||||
163 | (my $calldir = $callpkg) =~ s#::#/#g; | ||||
164 | my $path = $INC{$calldir . '.pm'}; | ||||
165 | if (defined($path)) { | ||||
166 | # Try absolute path name, but only eval it if the | ||||
167 | # transformation from module path to autosplit.ix path | ||||
168 | # succeeded! | ||||
169 | my $replaced_okay; | ||||
170 | if ($is_macos) { | ||||
171 | (my $malldir = $calldir) =~ tr#/#:#; | ||||
172 | $replaced_okay = ($path =~ s#^(.*)$malldir\.pm\z#$1auto:$malldir:autosplit.ix#s); | ||||
173 | } else { | ||||
174 | $replaced_okay = ($path =~ s#^(.*)$calldir\.pm\z#$1auto/$calldir/autosplit.ix#); | ||||
175 | } | ||||
176 | |||||
177 | eval { require $path; } if $replaced_okay; | ||||
178 | # If that failed, try relative path with normal @INC searching. | ||||
179 | if (!$replaced_okay or $@) { | ||||
180 | $path ="auto/$calldir/autosplit.ix"; | ||||
181 | eval { require $path; }; | ||||
182 | } | ||||
183 | if ($@) { | ||||
184 | my $error = $@; | ||||
185 | require Carp; | ||||
186 | Carp::carp($error); | ||||
187 | } | ||||
188 | } | ||||
189 | } | ||||
190 | |||||
191 | sub unimport { | ||||
192 | my $callpkg = caller; | ||||
193 | |||||
194 | 2 | 73µs | 2 | 22µs | # spent 14µs (6+8) within AutoLoader::BEGIN@194 which was called:
# once (6µs+8µs) by C4::Charset::BEGIN@24 at line 194 # spent 14µs making 1 call to AutoLoader::BEGIN@194
# spent 8µs making 1 call to strict::unimport |
195 | |||||
196 | for my $exported (qw( AUTOLOAD )) { | ||||
197 | my $symname = $callpkg . '::' . $exported; | ||||
198 | undef *{ $symname } if \&{ $symname } == \&{ $exported }; | ||||
199 | *{ $symname } = \&{ $symname }; | ||||
200 | } | ||||
201 | } | ||||
202 | |||||
203 | 1 | 3µs | 1; | ||
204 | |||||
205 | __END__ |