| File | /usr/share/perl/5.10/AutoLoader.pm |
| Statements Executed | 28 |
| Total Time | 0.0001923 seconds |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 92µs | 92µs | AutoLoader::find_filename |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::AUTOLOAD |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::BEGIN |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::__ANON__[:31] |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::can |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::import |
| 0 | 0 | 0 | 0s | 0s | AutoLoader::unimport |
| Line | Stmts. | Exclusive Time | Avg. | Code |
|---|---|---|---|---|
| 1 | package AutoLoader; | |||
| 2 | ||||
| 3 | use strict; | |||
| 4 | use 5.006_001; | |||
| 5 | ||||
| 6 | our($VERSION, $AUTOLOAD); | |||
| 7 | ||||
| 8 | my $is_dosish; | |||
| 9 | my $is_epoc; | |||
| 10 | my $is_vms; | |||
| 11 | my $is_macos; | |||
| 12 | ||||
| 13 | BEGIN { | |||
| 14 | $is_dosish = $^O eq 'dos' || $^O eq 'os2' || $^O eq 'MSWin32' || $^O eq 'NetWare'; | |||
| 15 | $is_epoc = $^O eq 'epoc'; | |||
| 16 | $is_vms = $^O eq 'VMS'; | |||
| 17 | $is_macos = $^O eq 'MacOS'; | |||
| 18 | $VERSION = '5.63'; | |||
| 19 | } | |||
| 20 | ||||
| 21 | AUTOLOAD { | |||
| 22 | 7 | 33µs | 5µs | my $sub = $AUTOLOAD; |
| 23 | my $filename = AutoLoader::find_filename( $sub ); # spent 92µs making 1 call to AutoLoader::find_filename | |||
| 24 | ||||
| 25 | my $save = $@; | |||
| 26 | local $!; # Do not munge the value. | |||
| 27 | 2 | 63µs | 32µs | eval { local $SIG{__DIE__}; require $filename }; |
| 28 | 2 | 3µs | 1µs | if ($@) { |
| 29 | 2 | 16µs | 8µs | if (substr($sub,-9) eq '::DESTROY') { |
| 30 | no strict 'refs'; | |||
| 31 | 1 | 400ns | 400ns | *$sub = sub {}; |
| 32 | $@ = undef; | |||
| 33 | } elsif ($@ =~ /^Can't locate/) { | |||
| 34 | # The load might just have failed because the filename was too | |||
| 35 | # long for some old SVR3 systems which treat long names as errors. | |||
| 36 | # If we can successfully truncate a long name then it's worth a go. | |||
| 37 | # There is a slight risk that we could pick up the wrong file here | |||
| 38 | # but autosplit should have warned about that when splitting. | |||
| 39 | if ($filename =~ s/(\w{12,})\.al$/substr($1,0,11).".al"/e){ | |||
| 40 | eval { local $SIG{__DIE__}; require $filename }; | |||
| 41 | } | |||
| 42 | } | |||
| 43 | if ($@){ | |||
| 44 | $@ =~ s/ at .*\n//; | |||
| 45 | my $error = $@; | |||
| 46 | require Carp; | |||
| 47 | Carp::croak($error); | |||
| 48 | } | |||
| 49 | } | |||
| 50 | $@ = $save; | |||
| 51 | goto &$sub; | |||
| 52 | } | |||
| 53 | ||||
| 54 | sub can { | |||
| 55 | my ($self, $method) = @_; | |||
| 56 | ||||
| 57 | my $parent = $self->SUPER::can( $method ); | |||
| 58 | return $parent if $parent; | |||
| 59 | ||||
| 60 | my $package = ref( $self ) || $self; | |||
| 61 | my $filename = AutoLoader::find_filename( $package . '::' . $method ); | |||
| 62 | local $@; | |||
| 63 | return unless eval { require $filename }; | |||
| 64 | ||||
| 65 | no strict 'refs'; | |||
| 66 | return \&{ $package . '::' . $method }; | |||
| 67 | } | |||
| 68 | ||||
| 69 | # spent 92µs within AutoLoader::find_filename which was called
# once (92µs+0s) by AutoLoader::AUTOLOAD at line 23 | |||
| 70 | 4 | 5µs | 1µs | my $sub = shift; |
| 71 | my $filename; | |||
| 72 | # Braces used to preserve $1 et al. | |||
| 73 | { | |||
| 74 | # Try to find the autoloaded file from the package-qualified | |||
| 75 | # name of the sub. e.g., if the sub needed is | |||
| 76 | # Getopt::Long::GetOptions(), then $INC{Getopt/Long.pm} is | |||
| 77 | # something like '/usr/lib/perl5/Getopt/Long.pm', and the | |||
| 78 | # autoload file is '/usr/lib/perl5/auto/Getopt/Long/GetOptions.al'. | |||
| 79 | # | |||
| 80 | # However, if @INC is a relative path, this might not work. If, | |||
| 81 | # for example, @INC = ('lib'), then $INC{Getopt/Long.pm} is | |||
| 82 | # 'lib/Getopt/Long.pm', and we want to require | |||
| 83 | # 'auto/Getopt/Long/GetOptions.al' (without the leading 'lib'). | |||
| 84 | # In this case, we simple prepend the 'auto/' and let the | |||
| 85 | # C<require> take care of the searching for us. | |||
| 86 | ||||
| 87 | 4 | 18µs | 4µs | my ($pkg,$func) = ($sub =~ /(.*)::([^:]+)$/); |
| 88 | $pkg =~ s#::#/#g; | |||
| 89 | 2 | 12µs | 6µs | if (defined($filename = $INC{"$pkg.pm"})) { |
| 90 | 1 | 35µs | 35µs | if ($is_macos) { |
| 91 | $pkg =~ tr#/#:#; | |||
| 92 | $filename = undef | |||
| 93 | unless $filename =~ s#^(.*)$pkg\.pm\z#$1auto:$pkg:$func.al#s; | |||
| 94 | } else { | |||
| 95 | $filename = undef | |||
| 96 | unless $filename =~ s#^(.*)$pkg\.pm\z#$1auto/$pkg/$func.al#s; | |||
| 97 | } | |||
| 98 | ||||
| 99 | # if the file exists, then make sure that it is a | |||
| 100 | # a fully anchored path (i.e either '/usr/lib/auto/foo/bar.al', | |||
| 101 | # or './lib/auto/foo/bar.al'. This avoids C<require> searching | |||
| 102 | # (and failing) to find the 'lib/auto/foo/bar.al' because it | |||
| 103 | # looked for 'lib/lib/auto/foo/bar.al', given @INC = ('lib'). | |||
| 104 | ||||
| 105 | 1 | 700ns | 700ns | if (defined $filename and -r $filename) { |
| 106 | unless ($filename =~ m|^/|s) { | |||
| 107 | if ($is_dosish) { | |||
| 108 | unless ($filename =~ m{^([a-z]:)?[\\/]}is) { | |||
| 109 | if ($^O ne 'NetWare') { | |||
| 110 | $filename = "./$filename"; | |||
| 111 | } else { | |||
| 112 | $filename = "$filename"; | |||
| 113 | } | |||
| 114 | } | |||
| 115 | } | |||
| 116 | elsif ($is_epoc) { | |||
| 117 | unless ($filename =~ m{^([a-z?]:)?[\\/]}is) { | |||
| 118 | $filename = "./$filename"; | |||
| 119 | } | |||
| 120 | } | |||
| 121 | elsif ($is_vms) { | |||
| 122 | # XXX todo by VMSmiths | |||
| 123 | $filename = "./$filename"; | |||
| 124 | } | |||
| 125 | elsif (!$is_macos) { | |||
| 126 | $filename = "./$filename"; | |||
| 127 | } | |||
| 128 | } | |||
| 129 | } | |||
| 130 | else { | |||
| 131 | $filename = undef; | |||
| 132 | } | |||
| 133 | } | |||
| 134 | 2 | 6µs | 3µs | unless (defined $filename) { |
| 135 | # let C<require> do the searching | |||
| 136 | $filename = "auto/$sub.al"; | |||
| 137 | $filename =~ s#::#/#g; | |||
| 138 | } | |||
| 139 | } | |||
| 140 | return $filename; | |||
| 141 | } | |||
| 142 | ||||
| 143 | sub import { | |||
| 144 | my $pkg = shift; | |||
| 145 | my $callpkg = caller; | |||
| 146 | ||||
| 147 | # | |||
| 148 | # Export symbols, but not by accident of inheritance. | |||
| 149 | # | |||
| 150 | ||||
| 151 | if ($pkg eq 'AutoLoader') { | |||
| 152 | if ( @_ and $_[0] =~ /^&?AUTOLOAD$/ ) { | |||
| 153 | no strict 'refs'; | |||
| 154 | *{ $callpkg . '::AUTOLOAD' } = \&AUTOLOAD; | |||
| 155 | *{ $callpkg . '::can' } = \&can; | |||
| 156 | } | |||
| 157 | } | |||
| 158 | ||||
| 159 | # | |||
| 160 | # Try to find the autosplit index file. Eg., if the call package | |||
| 161 | # is POSIX, then $INC{POSIX.pm} is something like | |||
| 162 | # '/usr/local/lib/perl5/POSIX.pm', and the autosplit index file is in | |||
| 163 | # '/usr/local/lib/perl5/auto/POSIX/autosplit.ix', so we require that. | |||
| 164 | # | |||
| 165 | # However, if @INC is a relative path, this might not work. If, | |||
| 166 | # for example, @INC = ('lib'), then | |||
| 167 | # $INC{POSIX.pm} is 'lib/POSIX.pm', and we want to require | |||
| 168 | # 'auto/POSIX/autosplit.ix' (without the leading 'lib'). | |||
| 169 | # | |||
| 170 | ||||
| 171 | (my $calldir = $callpkg) =~ s#::#/#g; | |||
| 172 | my $path = $INC{$calldir . '.pm'}; | |||
| 173 | if (defined($path)) { | |||
| 174 | # Try absolute path name. | |||
| 175 | if ($is_macos) { | |||
| 176 | (my $malldir = $calldir) =~ tr#/#:#; | |||
| 177 | $path =~ s#^(.*)$malldir\.pm\z#$1auto:$malldir:autosplit.ix#s; | |||
| 178 | } else { | |||
| 179 | $path =~ s#^(.*)$calldir\.pm\z#$1auto/$calldir/autosplit.ix#; | |||
| 180 | } | |||
| 181 | ||||
| 182 | eval { require $path; }; | |||
| 183 | # If that failed, try relative path with normal @INC searching. | |||
| 184 | if ($@) { | |||
| 185 | $path ="auto/$calldir/autosplit.ix"; | |||
| 186 | eval { require $path; }; | |||
| 187 | } | |||
| 188 | if ($@) { | |||
| 189 | my $error = $@; | |||
| 190 | require Carp; | |||
| 191 | Carp::carp($error); | |||
| 192 | } | |||
| 193 | } | |||
| 194 | } | |||
| 195 | ||||
| 196 | sub unimport { | |||
| 197 | my $callpkg = caller; | |||
| 198 | ||||
| 199 | no strict 'refs'; | |||
| 200 | ||||
| 201 | for my $exported (qw( AUTOLOAD can )) { | |||
| 202 | my $symname = $callpkg . '::' . $exported; | |||
| 203 | undef *{ $symname } if \&{ $symname } == \&{ $exported }; | |||
| 204 | *{ $symname } = \&{ $symname }; | |||
| 205 | } | |||
| 206 | } | |||
| 207 | ||||
| 208 | 1; | |||
| 209 | ||||
| 210 | __END__ | |||
| 211 |