| File | /usr/local/lib/perl5/site_perl/5.10.1/darwin-2level/Devel/GlobalDestruction.pm |
| Statements Executed | 20 |
| Statement Execution Time | 12.2ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 3.36ms | 36.7ms | Devel::GlobalDestruction::BEGIN@26 |
| 1 | 1 | 1 | 25µs | 28µs | Devel::GlobalDestruction::BEGIN@5 |
| 1 | 1 | 1 | 19µs | 307µs | Devel::GlobalDestruction::BEGIN@10 |
| 1 | 1 | 1 | 10µs | 22µs | Devel::GlobalDestruction::BEGIN@6 |
| 1 | 1 | 1 | 8µs | 50µs | Devel::GlobalDestruction::BEGIN@8 |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | #!/usr/bin/perl | ||||
| 2 | |||||
| 3 | package Devel::GlobalDestruction; | ||||
| 4 | |||||
| 5 | 3 | 29µs | 2 | 32µs | # spent 28µs (25+4) within Devel::GlobalDestruction::BEGIN@5 which was called
# once (25µs+4µs) by Class::MOP::Class::BEGIN@15 at line 5 # spent 28µs making 1 call to Devel::GlobalDestruction::BEGIN@5
# spent 4µs making 1 call to strict::import |
| 6 | 3 | 31µs | 2 | 34µs | # spent 22µs (10+12) within Devel::GlobalDestruction::BEGIN@6 which was called
# once (10µs+12µs) by Class::MOP::Class::BEGIN@15 at line 6 # spent 22µs making 1 call to Devel::GlobalDestruction::BEGIN@6
# spent 12µs making 1 call to warnings::import |
| 7 | |||||
| 8 | 3 | 85µs | 2 | 92µs | # spent 50µs (8+42) within Devel::GlobalDestruction::BEGIN@8 which was called
# once (8µs+42µs) by Class::MOP::Class::BEGIN@15 at line 8 # spent 50µs making 1 call to Devel::GlobalDestruction::BEGIN@8
# spent 42µs making 1 call to vars::import |
| 9 | |||||
| 10 | # spent 307µs (19+288) within Devel::GlobalDestruction::BEGIN@10 which was called
# once (19µs+288µs) by Class::MOP::Class::BEGIN@15 at line 24 | ||||
| 11 | 6 | 308µs | $VERSION = '0.02'; | ||
| 12 | |||||
| 13 | local $@; | ||||
| 14 | |||||
| 15 | eval { | ||||
| 16 | require XSLoader; | ||||
| 17 | __PACKAGE__->XSLoader::load($VERSION); # spent 288µs making 1 call to XSLoader::load | ||||
| 18 | 1; | ||||
| 19 | } or do { | ||||
| 20 | require DynaLoader; | ||||
| 21 | push @ISA, 'DynaLoader'; | ||||
| 22 | __PACKAGE__->bootstrap($VERSION); | ||||
| 23 | }; | ||||
| 24 | 1 | 72µs | 1 | 307µs | } # spent 307µs making 1 call to Devel::GlobalDestruction::BEGIN@10 |
| 25 | |||||
| 26 | # spent 36.7ms (3.36+33.4) within Devel::GlobalDestruction::BEGIN@26 which was called
# once (3.36ms+33.4ms) by Class::MOP::Class::BEGIN@15 at line 29 # spent 386µs making 1 call to Sub::Exporter::__ANON__[Sub/Exporter.pm:756] | ||||
| 27 | exports => [ qw(in_global_destruction) ], | ||||
| 28 | groups => { default => [ -all ] }, | ||||
| 29 | 3 | 11.6ms | 1 | 36.7ms | }; # spent 36.7ms making 1 call to Devel::GlobalDestruction::BEGIN@26 |
| 30 | |||||
| 31 | 1 | 11µs | __PACKAGE__ | ||
| 32 | |||||
| 33 | __END__ | ||||
| 34 | |||||
| 35 | =pod | ||||
| 36 | |||||
| 37 | =head1 NAME | ||||
| 38 | |||||
| 39 | Devel::GlobalDestruction - Expose PL_dirty, the flag which marks global | ||||
| 40 | destruction. | ||||
| 41 | |||||
| 42 | =head1 SYNOPSIS | ||||
| 43 | |||||
| 44 | package Foo; | ||||
| 45 | use Devel::GlobalDestruction; | ||||
| 46 | |||||
| 47 | use namespace::clean; # to avoid having an "in_global_destruction" method | ||||
| 48 | |||||
| 49 | sub DESTROY { | ||||
| 50 | return if in_global_destruction; | ||||
| 51 | |||||
| 52 | do_something_a_little_tricky(); | ||||
| 53 | } | ||||
| 54 | |||||
| 55 | =head1 DESCRIPTION | ||||
| 56 | |||||
| 57 | Perl's global destruction is a little tricky to deal with WRT finalizers | ||||
| 58 | because it's not ordered and objects can sometimes disappear. | ||||
| 59 | |||||
| 60 | Writing defensive destructors is hard and annoying, and usually if global | ||||
| 61 | destruction is happenning you only need the destructors that free up non | ||||
| 62 | process local resources to actually execute. | ||||
| 63 | |||||
| 64 | For these constructors you can avoid the mess by simply bailing out if global | ||||
| 65 | destruction is in effect. | ||||
| 66 | |||||
| 67 | =head1 EXPORTS | ||||
| 68 | |||||
| 69 | This module uses L<Sub::Exporter> so the exports may be renamed, aliased, etc. | ||||
| 70 | |||||
| 71 | =over 4 | ||||
| 72 | |||||
| 73 | =item in_global_destruction | ||||
| 74 | |||||
| 75 | Returns the current value of C<PL_dirty>. | ||||
| 76 | |||||
| 77 | =back | ||||
| 78 | |||||
| 79 | =head1 VERSION CONTROL | ||||
| 80 | |||||
| 81 | This module is maintained using Darcs. You can get the latest version from | ||||
| 82 | L<http://nothingmuch.woobling.org/code>, and use C<darcs send> to commit | ||||
| 83 | changes. | ||||
| 84 | |||||
| 85 | =head1 AUTHOR | ||||
| 86 | |||||
| 87 | Yuval Kogman E<lt>nothingmuch@woobling.orgE<gt> | ||||
| 88 | |||||
| 89 | =head1 COPYRIGHT | ||||
| 90 | |||||
| 91 | Copyright (c) 2008 Yuval Kogman. All rights reserved | ||||
| 92 | This program is free software; you can redistribute | ||||
| 93 | it and/or modify it under the same terms as Perl itself. | ||||
| 94 | |||||
| 95 | =cut | ||||
| 96 | |||||
| 97 |