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LibreOffice 6.2 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/interlck.h"
28 
29 namespace salhelper
30 {
31 
37 {
40  oslInterlockedCount m_nReferenceCount;
41 
44 
45 public:
48  static void* operator new (size_t n)
49  {
51  }
52  static void operator delete (void* p)
53  {
54  ::rtl_freeMemory (p);
55  }
56  static void* operator new (size_t, void* p)
57  {
58  return p;
59  }
60  static void operator delete (void*, void*)
61  {}
62 
63 public:
66  ReferenceObject() : m_nReferenceCount(0)
67  {}
68 
69 
70  void SAL_CALL acquire()
71  {
72  osl_atomic_increment(&m_nReferenceCount);
73  }
74 
75  void SAL_CALL release()
76  {
77  if (osl_atomic_decrement(&m_nReferenceCount) == 0)
78  {
79  // Last reference released.
80  delete this;
81  }
82  }
83 
84 protected:
87  virtual ~ReferenceObject()
88  {
89  assert(m_nReferenceCount == 0);
90  }
91 };
92 
93 
94 } // namespace salhelper
95 
96 #endif /* ! INCLUDED_SALHELPER_REFOBJ_HXX */
97 
98 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
#define SAL_DELETED_FUNCTION
short-circuit extra-verbose API namespaces
Definition: types.h:396
virtual ~ReferenceObject()
Destruction.
Definition: refobj.hxx:87
SAL_DLLPUBLIC void rtl_freeMemory(void *Ptr) SAL_THROW_EXTERN_C()
Free memory.
A base implementation for reference-counted objects.
Definition: refobj.hxx:36
void release()
Definition: refobj.hxx:75
Definition: condition.hxx:30
sal_Int32 oslInterlockedCount
Definition: interlck.h:40
void acquire()
Definition: refobj.hxx:70
ReferenceObject()
Construction.
Definition: refobj.hxx:66
SAL_DLLPUBLIC void * rtl_allocateMemory(sal_Size Bytes) SAL_THROW_EXTERN_C()
Allocate memory.