1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
Base class interface
Copyright (C) 1998,1999 by Andrew Zabolotny
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "Base.h"
Base::~Base ()
{
}
/**
* Decrement object's reference count; as soon as the last reference
* to the object is removed, it is destroyed.
*/
void Base::DecRef ()
{
if (!--RefCount)
delete this;
}
/**
* Object initialization. The initial reference count is set to one;
* this means if you call DecRef() immediately after creating the object,
* it will be destroyed.
*/
Base::Base ()
{
RefCount = 1;
}
/**
* Increment reference count.
* Every time when you copy a pointer to a object and store it for
* later use you MUST call IncRef() on it; this will allow to keep
* objects as long as they are referenced by some entity.
*/
void Base::IncRef ()
{
++RefCount;
}
/**
* Query number of references to this object.
* I would rather prefer to have the reference counter strictly private,
* but sometimes, mostly for debugging, such a function can help.
*/
int Base::GetRefCount ()
{
return RefCount;
}
|
