| line | stmt | bran | cond | sub | pod | time | code | 
| 1 |  |  |  |  |  |  | package IO::LockedFile::Flock; | 
| 2 | 7 |  |  | 7 |  | 49 | use strict; | 
|  | 7 |  |  |  |  | 21 |  | 
|  | 7 |  |  |  |  | 301 |  | 
| 3 | 7 |  |  | 7 |  | 119 | use Fcntl ':flock'; # import LOCK_* constants | 
|  | 7 |  |  |  |  | 14 |  | 
|  | 7 |  |  |  |  | 1127 |  | 
| 4 | 7 |  |  | 7 |  | 42 | use Carp; | 
|  | 7 |  |  |  |  | 14 |  | 
|  | 7 |  |  |  |  | 12341 |  | 
| 5 | 7 |  |  | 7 |  | 49 | use vars qw( @ISA ); | 
|  | 7 |  |  |  |  | 7 |  | 
|  | 7 |  |  |  |  | 1561 |  | 
| 6 |  |  |  |  |  |  | @ISA = qw( IO::LockedFile ); | 
| 7 |  |  |  |  |  |  |  | 
| 8 |  |  |  |  |  |  | ###################### | 
| 9 |  |  |  |  |  |  | # lock | 
| 10 |  |  |  |  |  |  | ###################### | 
| 11 |  |  |  |  |  |  | sub lock { | 
| 12 | 39 |  |  | 39 | 1 | 72 | my $self = shift; | 
| 13 |  |  |  |  |  |  |  | 
| 14 | 39 | 100 |  |  |  | 524 | my $lock_type = $self->is_writable() ? LOCK_EX : LOCK_SH; | 
| 15 |  |  |  |  |  |  |  | 
| 16 | 39 |  |  |  |  | 93 | my $got_lock = 0; | 
| 17 |  |  |  |  |  |  |  | 
| 18 | 39 | 100 |  |  |  | 201 | if ( ! $self->should_block() ) { | 
| 19 | 12 |  |  |  |  | 290 | $got_lock = flock( $self, $lock_type | LOCK_NB ); | 
| 20 |  |  |  |  |  |  | } | 
| 21 |  |  |  |  |  |  | else { | 
| 22 | 27 | 50 |  |  |  | 300 | $got_lock =  flock($self, $lock_type) | 
| 23 |  |  |  |  |  |  | or croak( "Cannot lock: $!"); | 
| 24 |  |  |  |  |  |  | } | 
| 25 |  |  |  |  |  |  |  | 
| 26 | 39 | 100 |  |  |  | 436 | $self->SUPER::lock() if ($got_lock); | 
| 27 | 39 |  |  |  |  | 513 | return $got_lock; | 
| 28 |  |  |  |  |  |  | } | 
| 29 |  |  |  |  |  |  |  | 
| 30 |  |  |  |  |  |  | ###################### | 
| 31 |  |  |  |  |  |  | # unlock | 
| 32 |  |  |  |  |  |  | ###################### | 
| 33 |  |  |  |  |  |  | sub unlock { | 
| 34 | 30 |  |  | 30 | 1 | 121 | my $self = shift; | 
| 35 | 30 |  |  |  |  | 443 | flock($self, LOCK_UN); | 
| 36 |  |  |  |  |  |  | #        or croak( ref( $self ) . ": Cannot unlock: $!"); | 
| 37 | 30 |  |  |  |  | 379 | $self->SUPER::unlock; | 
| 38 |  |  |  |  |  |  | } | 
| 39 |  |  |  |  |  |  |  | 
| 40 |  |  |  |  |  |  | 1; | 
| 41 |  |  |  |  |  |  |  | 
| 42 |  |  |  |  |  |  |  | 
| 43 |  |  |  |  |  |  | __END__ |