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