File | /usr/local/lib/perl5/5.10.1/darwin-2level/lib.pm |
Statements Executed | 62 |
Statement Execution Time | 646µs |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
1 | 1 | 1 | 54µs | 98µs | import | lib::
1 | 1 | 1 | 17µs | 33µs | BEGIN@6 | lib::
2 | 1 | 2 | 14µs | 14µs | CORE:ftis (opcode) | lib::
8 | 4 | 2 | 14µs | 14µs | CORE:ftdir (opcode) | lib::
2 | 1 | 1 | 11µs | 11µs | _get_dirs | lib::
1 | 1 | 1 | 7µs | 10µs | BEGIN@8 | lib::
2 | 1 | 1 | 4µs | 4µs | _nativize | lib::
2 | 1 | 2 | 2µs | 2µs | CORE:match (opcode) | lib::
0 | 0 | 0 | 0s | 0s | unimport | lib::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
---|---|---|---|---|---|
1 | package lib; | ||||
2 | |||||
3 | # THIS FILE IS AUTOMATICALLY GENERATED FROM lib_pm.PL. | ||||
4 | # ANY CHANGES TO THIS FILE WILL BE OVERWRITTEN BY THE NEXT PERL BUILD. | ||||
5 | |||||
6 | 3 | 32µs | 2 | 48µs | # spent 33µs (17+15) within lib::BEGIN@6 which was called
# once (17µs+15µs) by main::BEGIN@3 at line 6 # spent 33µs making 1 call to lib::BEGIN@6
# spent 15µs making 1 call to Config::import |
7 | |||||
8 | 3 | 488µs | 2 | 14µs | # spent 10µs (7+4) within lib::BEGIN@8 which was called
# once (7µs+4µs) by main::BEGIN@3 at line 8 # spent 10µs making 1 call to lib::BEGIN@8
# spent 4µs making 1 call to strict::import |
9 | |||||
10 | 1 | 9µs | 1 | 6µs | my $archname = $Config{archname}; # spent 6µs making 1 call to Config::FETCH |
11 | 1 | 3µs | 1 | 2µs | my $version = $Config{version}; # spent 2µs making 1 call to Config::FETCH |
12 | 1 | 4µs | 1 | 2µs | my @inc_version_list = reverse split / /, $Config{inc_version_list}; # spent 2µs making 1 call to Config::FETCH |
13 | |||||
14 | |||||
15 | 1 | 1µs | our @ORIG_INC = @INC; # take a handy copy of 'original' value | ||
16 | 1 | 300ns | our $VERSION = '0.62'; | ||
17 | 1 | 1µs | my $Is_MacOS = $^O eq 'MacOS'; | ||
18 | 1 | 0s | my $Mac_FS; | ||
19 | 1 | 100ns | if ($Is_MacOS) { | ||
20 | require File::Spec; | ||||
21 | $Mac_FS = eval { require Mac::FileSpec::Unixish }; | ||||
22 | } | ||||
23 | |||||
24 | # spent 98µs (54+44) within lib::import which was called
# once (54µs+44µs) by main::BEGIN@3 at line 3 of 05.Domain_and_Item.t | ||||
25 | 25 | 78µs | shift; | ||
26 | |||||
27 | my %names; | ||||
28 | foreach (reverse @_) { | ||||
29 | my $path = $_; # we'll be modifying it, so break the alias | ||||
30 | if ($path eq '') { | ||||
31 | require Carp; | ||||
32 | Carp::carp("Empty compile time value given to use lib"); | ||||
33 | } | ||||
34 | |||||
35 | $path = _nativize($path); # spent 4µs making 2 calls to lib::_nativize, avg 2µs/call | ||||
36 | |||||
37 | if ($path !~ /\.par$/i && -e $path && ! -d _) { # spent 14µs making 2 calls to lib::CORE:ftis, avg 7µs/call
# spent 2µs making 2 calls to lib::CORE:ftdir, avg 900ns/call
# spent 2µs making 2 calls to lib::CORE:match, avg 900ns/call | ||||
38 | require Carp; | ||||
39 | Carp::carp("Parameter to use lib must be directory, not file"); | ||||
40 | } | ||||
41 | unshift(@INC, $path); | ||||
42 | # Add any previous version directories we found at configure time | ||||
43 | foreach my $incver (@inc_version_list) | ||||
44 | { | ||||
45 | my $dir = $Is_MacOS | ||||
46 | ? File::Spec->catdir( $path, $incver ) | ||||
47 | : "$path/$incver"; | ||||
48 | unshift(@INC, $dir) if -d $dir; | ||||
49 | } | ||||
50 | # Put a corresponding archlib directory in front of $path if it | ||||
51 | # looks like $path has an archlib directory below it. | ||||
52 | my($arch_auto_dir, $arch_dir, $version_dir, $version_arch_dir) # spent 11µs making 2 calls to lib::_get_dirs, avg 5µs/call | ||||
53 | = _get_dirs($path); | ||||
54 | unshift(@INC, $arch_dir) if -d $arch_auto_dir; # spent 6µs making 2 calls to lib::CORE:ftdir, avg 3µs/call | ||||
55 | unshift(@INC, $version_dir) if -d $version_dir; # spent 4µs making 2 calls to lib::CORE:ftdir, avg 2µs/call | ||||
56 | unshift(@INC, $version_arch_dir) if -d $version_arch_dir; # spent 2µs making 2 calls to lib::CORE:ftdir, avg 1µs/call | ||||
57 | } | ||||
58 | |||||
59 | # remove trailing duplicates | ||||
60 | @INC = grep { ++$names{$_} == 1 } @INC; | ||||
61 | return; | ||||
62 | } | ||||
63 | |||||
64 | |||||
65 | sub unimport { | ||||
66 | shift; | ||||
67 | |||||
68 | my %names; | ||||
69 | foreach (@_) { | ||||
70 | my $path = _nativize($_); | ||||
71 | |||||
72 | my($arch_auto_dir, $arch_dir, $version_dir, $version_arch_dir) | ||||
73 | = _get_dirs($path); | ||||
74 | ++$names{$path}; | ||||
75 | ++$names{$arch_dir} if -d $arch_auto_dir; | ||||
76 | ++$names{$version_dir} if -d $version_dir; | ||||
77 | ++$names{$version_arch_dir} if -d $version_arch_dir; | ||||
78 | } | ||||
79 | |||||
80 | # Remove ALL instances of each named directory. | ||||
81 | @INC = grep { !exists $names{$_} } @INC; | ||||
82 | return; | ||||
83 | } | ||||
84 | |||||
85 | # spent 11µs within lib::_get_dirs which was called 2 times, avg 5µs/call:
# 2 times (11µs+0s) by lib::import at line 52, avg 5µs/call | ||||
86 | 16 | 11µs | my($dir) = @_; | ||
87 | my($arch_auto_dir, $arch_dir, $version_dir, $version_arch_dir); | ||||
88 | |||||
89 | # we could use this for all platforms in the future, but leave it | ||||
90 | # Mac-only for now, until there is more time for testing it. | ||||
91 | if ($Is_MacOS) { | ||||
92 | $arch_auto_dir = File::Spec->catdir( $dir, $archname, 'auto' ); | ||||
93 | $arch_dir = File::Spec->catdir( $dir, $archname, ); | ||||
94 | $version_dir = File::Spec->catdir( $dir, $version ); | ||||
95 | $version_arch_dir = File::Spec->catdir( $dir, $version, $archname ); | ||||
96 | } else { | ||||
97 | $arch_auto_dir = "$dir/$archname/auto"; | ||||
98 | $arch_dir = "$dir/$archname"; | ||||
99 | $version_dir = "$dir/$version"; | ||||
100 | $version_arch_dir = "$dir/$version/$archname"; | ||||
101 | } | ||||
102 | return($arch_auto_dir, $arch_dir, $version_dir, $version_arch_dir); | ||||
103 | } | ||||
104 | |||||
105 | # spent 4µs within lib::_nativize which was called 2 times, avg 2µs/call:
# 2 times (4µs+0s) by lib::import at line 35, avg 2µs/call | ||||
106 | 6 | 6µs | my($dir) = @_; | ||
107 | |||||
108 | if ($Is_MacOS && $Mac_FS && ! -d $dir) { | ||||
109 | $dir = Mac::FileSpec::Unixish::nativize($dir); | ||||
110 | $dir .= ":" unless $dir =~ /:$/; | ||||
111 | } | ||||
112 | |||||
113 | return $dir; | ||||
114 | } | ||||
115 | |||||
116 | 1 | 12µs | 1; | ||
117 | __END__ | ||||
118 | |||||
119 | =head1 NAME | ||||
120 | |||||
121 | lib - manipulate @INC at compile time | ||||
122 | |||||
123 | =head1 SYNOPSIS | ||||
124 | |||||
125 | use lib LIST; | ||||
126 | |||||
127 | no lib LIST; | ||||
128 | |||||
129 | =head1 DESCRIPTION | ||||
130 | |||||
131 | This is a small simple module which simplifies the manipulation of @INC | ||||
132 | at compile time. | ||||
133 | |||||
134 | It is typically used to add extra directories to perl's search path so | ||||
135 | that later C<use> or C<require> statements will find modules which are | ||||
136 | not located on perl's default search path. | ||||
137 | |||||
138 | =head2 Adding directories to @INC | ||||
139 | |||||
140 | The parameters to C<use lib> are added to the start of the perl search | ||||
141 | path. Saying | ||||
142 | |||||
143 | use lib LIST; | ||||
144 | |||||
145 | is I<almost> the same as saying | ||||
146 | |||||
147 | BEGIN { unshift(@INC, LIST) } | ||||
148 | |||||
149 | For each directory in LIST (called $dir here) the lib module also | ||||
150 | checks to see if a directory called $dir/$archname/auto exists. | ||||
151 | If so the $dir/$archname directory is assumed to be a corresponding | ||||
152 | architecture specific directory and is added to @INC in front of $dir. | ||||
153 | lib.pm also checks if directories called $dir/$version and $dir/$version/$archname | ||||
154 | exist and adds these directories to @INC. | ||||
155 | |||||
156 | The current value of C<$archname> can be found with this command: | ||||
157 | |||||
158 | perl -V:archname | ||||
159 | |||||
160 | The corresponding command to get the current value of C<$version> is: | ||||
161 | |||||
162 | perl -V:version | ||||
163 | |||||
164 | To avoid memory leaks, all trailing duplicate entries in @INC are | ||||
165 | removed. | ||||
166 | |||||
167 | =head2 Deleting directories from @INC | ||||
168 | |||||
169 | You should normally only add directories to @INC. If you need to | ||||
170 | delete directories from @INC take care to only delete those which you | ||||
171 | added yourself or which you are certain are not needed by other modules | ||||
172 | in your script. Other modules may have added directories which they | ||||
173 | need for correct operation. | ||||
174 | |||||
175 | The C<no lib> statement deletes all instances of each named directory | ||||
176 | from @INC. | ||||
177 | |||||
178 | For each directory in LIST (called $dir here) the lib module also | ||||
179 | checks to see if a directory called $dir/$archname/auto exists. | ||||
180 | If so the $dir/$archname directory is assumed to be a corresponding | ||||
181 | architecture specific directory and is also deleted from @INC. | ||||
182 | |||||
183 | =head2 Restoring original @INC | ||||
184 | |||||
185 | When the lib module is first loaded it records the current value of @INC | ||||
186 | in an array C<@lib::ORIG_INC>. To restore @INC to that value you | ||||
187 | can say | ||||
188 | |||||
189 | @INC = @lib::ORIG_INC; | ||||
190 | |||||
191 | =head1 CAVEATS | ||||
192 | |||||
193 | In order to keep lib.pm small and simple, it only works with Unix | ||||
194 | filepaths. This doesn't mean it only works on Unix, but non-Unix | ||||
195 | users must first translate their file paths to Unix conventions. | ||||
196 | |||||
197 | # VMS users wanting to put [.stuff.moo] into | ||||
198 | # their @INC would write | ||||
199 | use lib 'stuff/moo'; | ||||
200 | |||||
201 | =head1 NOTES | ||||
202 | |||||
203 | In the future, this module will likely use File::Spec for determining | ||||
204 | paths, as it does now for Mac OS (where Unix-style or Mac-style paths | ||||
205 | work, and Unix-style paths are converted properly to Mac-style paths | ||||
206 | before being added to @INC). | ||||
207 | |||||
208 | If you try to add a file to @INC as follows: | ||||
209 | |||||
210 | use lib 'this_is_a_file.txt'; | ||||
211 | |||||
212 | C<lib> will warn about this. The sole exceptions are files with the | ||||
213 | C<.par> extension which are intended to be used as libraries. | ||||
214 | |||||
215 | =head1 SEE ALSO | ||||
216 | |||||
217 | FindBin - optional module which deals with paths relative to the source file. | ||||
218 | |||||
219 | PAR - optional module which can treat C<.par> files as Perl libraries. | ||||
220 | |||||
221 | =head1 AUTHOR | ||||
222 | |||||
223 | Tim Bunce, 2nd June 1995. | ||||
224 | |||||
225 | C<lib> is maintained by the perl5-porters. Please direct | ||||
226 | any questions to the canonical mailing list. Anything that | ||||
227 | is applicable to the CPAN release can be sent to its maintainer, | ||||
228 | though. | ||||
229 | |||||
230 | Maintainer: The Perl5-Porters <perl5-porters@perl.org> | ||||
231 | |||||
232 | Maintainer of the CPAN release: Steffen Mueller <smueller@cpan.org> | ||||
233 | |||||
234 | =head1 COPYRIGHT AND LICENSE | ||||
235 | |||||
236 | This package has been part of the perl core since perl 5.001. | ||||
237 | It has been released separately to CPAN so older installations | ||||
238 | can benefit from bug fixes. | ||||
239 | |||||
240 | This package has the same copyright and license as the perl core. | ||||
241 | |||||
242 | =cut | ||||
# spent 14µs within lib::CORE:ftdir which was called 8 times, avg 2µs/call:
# 2 times (6µs+0s) by lib::import at line 54 of lib.pm, avg 3µs/call
# 2 times (4µs+0s) by lib::import at line 55 of lib.pm, avg 2µs/call
# 2 times (2µs+0s) by lib::import at line 56 of lib.pm, avg 1µs/call
# 2 times (2µs+0s) by lib::import at line 37 of lib.pm, avg 900ns/call | |||||
# spent 14µs within lib::CORE:ftis which was called 2 times, avg 7µs/call:
# 2 times (14µs+0s) by lib::import at line 37 of lib.pm, avg 7µs/call | |||||
# spent 2µs within lib::CORE:match which was called 2 times, avg 900ns/call:
# 2 times (2µs+0s) by lib::import at line 37 of lib.pm, avg 900ns/call |