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LibreOffice 6.0 SDK C/C++ API Reference
refobj.hxx
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19 
20 #ifndef INCLUDED_SALHELPER_REFOBJ_HXX
21 #define INCLUDED_SALHELPER_REFOBJ_HXX
22 
23 #include <cassert>
24 
25 #include <sal/types.h>
26 #include <rtl/alloc.h>
27 #include <osl/diagnose.h>
28 #include <osl/interlck.h>
29 
30 namespace salhelper
31 {
32 
38 {
41  oslInterlockedCount m_nReferenceCount;
42 
45 
46 public:
49  static void* operator new (size_t n)
50  {
52  }
53  static void operator delete (void* p)
54  {
55  ::rtl_freeMemory (p);
56  }
57  static void* operator new (size_t, void* p)
58  {
59  return p;
60  }
61  static void operator delete (void*, void*)
62  {}
63 
64 public:
67  ReferenceObject() : m_nReferenceCount(0)
68  {}
69 
70 
71  void SAL_CALL acquire()
72  {
73  osl_atomic_increment(&m_nReferenceCount);
74  }
75 
76  void SAL_CALL release()
77  {
78  if (osl_atomic_decrement(&m_nReferenceCount) == 0)
79  {
80  // Last reference released.
81  delete this;
82  }
83  }
84 
85 protected:
88  virtual ~ReferenceObject()
89  {
90  assert(m_nReferenceCount == 0);
91  }
92 };
93 
94 
95 } // namespace salhelper
96 
97 #endif /* ! INCLUDED_SALHELPER_REFOBJ_HXX */
98 
99 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Definition: condition.hxx:29
#define SAL_DELETED_FUNCTION
short-circuit extra-verbose API namespaces
Definition: types.h:402
virtual ~ReferenceObject()
Destruction.
Definition: refobj.hxx:88
SAL_DLLPUBLIC void rtl_freeMemory(void *Ptr) SAL_THROW_EXTERN_C()
Free memory.
A base implementation for reference-counted objects.
Definition: refobj.hxx:37
void release()
Definition: refobj.hxx:76
sal_Int32 oslInterlockedCount
Definition: interlck.h:36
void acquire()
Definition: refobj.hxx:71
ReferenceObject()
Construction.
Definition: refobj.hxx:67
SAL_DLLPUBLIC void * rtl_allocateMemory(sal_Size Bytes) SAL_THROW_EXTERN_C()
Allocate memory.