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refobj.hxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 
3 
4 #ifndef INCLUDED_SALHELPER_REFOBJ_HXX
5 #define INCLUDED_SALHELPER_REFOBJ_HXX
6 
7 #include <cassert>
8 
9 #include "sal/types.h"
10 #include "rtl/alloc.h"
11 #include "osl/interlck.h"
12 
13 namespace salhelper
14 {
15 
21 {
24  oslInterlockedCount m_nReferenceCount;
25 
28 
29 public:
32  static void* operator new (size_t n)
33  {
35  }
36  static void operator delete (void* p)
37  {
38  ::rtl_freeMemory (p);
39  }
40  static void* operator new (size_t, void* p)
41  {
42  return p;
43  }
44  static void operator delete (void*, void*)
45  {}
46 
47 public:
50  ReferenceObject() : m_nReferenceCount(0)
51  {}
52 
53 
54  void SAL_CALL acquire()
55  {
56  osl_atomic_increment(&m_nReferenceCount);
57  }
58 
59  void SAL_CALL release()
60  {
61  if (osl_atomic_decrement(&m_nReferenceCount) == 0)
62  {
63  // Last reference released.
64  delete this;
65  }
66  }
67 
68 protected:
71  virtual ~ReferenceObject()
72  {
73  assert(m_nReferenceCount == 0);
74  }
75 };
76 
77 
78 } // namespace salhelper
79 
80 #endif /* ! INCLUDED_SALHELPER_REFOBJ_HXX */
81 
82 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
virtual ~ReferenceObject()
Destruction.
Definition: refobj.hxx:71
SAL_DLLPUBLIC void rtl_freeMemory(void *Ptr) SAL_THROW_EXTERN_C()
Free memory.
void release()
Definition: refobj.hxx:59
A base implementation for reference-counted objects.
Definition: refobj.hxx:20
sal_Int32 oslInterlockedCount
Definition: interlck.h:24
ReferenceObject()
Construction.
Definition: refobj.hxx:50
SAL_DLLPUBLIC void * rtl_allocateMemory(sal_Size Bytes) SAL_THROW_EXTERN_C()
Allocate memory.
void acquire()
Definition: refobj.hxx:54
#define SAL_DELETED_FUNCTION
short-circuit extra-verbose API namespaces
Definition: types.h:358