Commit | Line | Data |
065b45be |
1 | package DBM::Deep::Engine::Sector; |
2 | |
3 | use 5.006; |
4 | |
5 | use strict; |
6 | use warnings FATAL => 'all'; |
7 | |
8 | use Scalar::Util (); |
9 | |
10 | sub new { |
11 | my $self = bless $_[1], $_[0]; |
12 | Scalar::Util::weaken( $self->{engine} ); |
13 | $self->_init; |
14 | return $self; |
15 | } |
16 | |
17 | #sub _init {} |
18 | #sub clone { DBM::Deep->_throw_error( "Must be implemented in the child class" ); } |
19 | |
20 | sub engine { $_[0]{engine} } |
21 | sub offset { $_[0]{offset} } |
22 | sub type { $_[0]{type} } |
23 | |
24 | sub base_size { |
25 | my $self = shift; |
26 | no warnings 'once'; |
27 | return $self->engine->SIG_SIZE + $DBM::Deep::Engine::STALE_SIZE; |
28 | } |
29 | |
30 | sub free { |
31 | my $self = shift; |
32 | |
33 | my $e = $self->engine; |
34 | |
35 | $e->storage->print_at( $self->offset, $e->SIG_FREE ); |
36 | # Skip staleness counter |
37 | $e->storage->print_at( $self->offset + $self->base_size, |
38 | chr(0) x ($self->size - $self->base_size), |
39 | ); |
40 | |
41 | my $free_meth = $self->free_meth; |
42 | $e->$free_meth( $self->offset, $self->size ); |
43 | |
44 | return; |
45 | } |
46 | |
47 | 1; |
48 | __END__ |