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
|
/*############################################################################
# Copyright (C) 2005 Intel Corporation
#
# SPDX-License-Identifier: MIT
############################################################################*/
#pragma once
//intrusive ptr concept
//usage examples same as smart pointers except user has to define addref and release routine for that class
//inline void intrusive_ptr_addref(UserClassA * pResource);
//inline void intrusive_ptr_release(UserClassA * pResource);
template <class T>
class intrusive_ptr {
T* m_pResource;
public:
intrusive_ptr(T* pResource = NULL) : m_pResource(pResource) {
intrusive_ptr_addref(m_pResource);
}
intrusive_ptr(const intrusive_ptr<T>& rhs) : m_pResource(rhs.m_pResource) {
intrusive_ptr_addref(m_pResource);
}
void reset(T* pResource) {
if (m_pResource) {
intrusive_ptr_release(m_pResource);
}
m_pResource = pResource;
intrusive_ptr_addref(m_pResource);
}
T* operator*() {
return m_pResource;
}
T* operator->() {
return m_pResource;
}
T* get() {
return m_pResource;
}
~intrusive_ptr() {
if (m_pResource) {
intrusive_ptr_release(m_pResource);
}
}
};
|
