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refobj.hxx
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19 
20 #ifndef INCLUDED_SALHELPER_REFOBJ_HXX
21 #define INCLUDED_SALHELPER_REFOBJ_HXX
22 
23 #include <sal/types.h>
24 #include <rtl/alloc.h>
25 #include <osl/diagnose.h>
26 #include <osl/interlck.h>
27 
28 namespace salhelper
29 {
30 
36 {
39  oslInterlockedCount m_nReferenceCount;
40 
43 
44 public:
47  static void* operator new (size_t n)
48  {
50  }
51  static void operator delete (void* p)
52  {
53  ::rtl_freeMemory (p);
54  }
55  static void* operator new (size_t, void* p)
56  {
57  return p;
58  }
59  static void operator delete (void*, void*)
60  {}
61 
62 public:
65  inline ReferenceObject() : m_nReferenceCount(0)
66  {}
67 
68 
69  void SAL_CALL acquire()
70  {
71  osl_atomic_increment(&m_nReferenceCount);
72  }
73 
74  void SAL_CALL release()
75  {
76  if (osl_atomic_decrement(&m_nReferenceCount) == 0)
77  {
78  // Last reference released.
79  delete this;
80  }
81  }
82 
83 protected:
86  virtual ~ReferenceObject()
87  {
88  OSL_ASSERT(m_nReferenceCount == 0);
89  }
90 };
91 
92 
93 } // namespace salhelper
94 
95 #endif /* ! INCLUDED_SALHELPER_REFOBJ_HXX */
96 
97 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
#define SAL_DELETED_FUNCTION
short-circuit extra-verbose API namespaces
Definition: types.h:410
virtual ~ReferenceObject()
Destruction.
Definition: refobj.hxx:86
SAL_DLLPUBLIC void rtl_freeMemory(void *Ptr) SAL_THROW_EXTERN_C()
Free memory.
A base implementation for reference-counted objects.
Definition: refobj.hxx:35
void release()
Definition: refobj.hxx:74
sal_Int32 oslInterlockedCount
Definition: interlck.h:36
void acquire()
Definition: refobj.hxx:69
ReferenceObject()
Construction.
Definition: refobj.hxx:65
SAL_DLLPUBLIC void * rtl_allocateMemory(sal_Size Bytes) SAL_THROW_EXTERN_C()
Allocate memory.
#define OSL_ASSERT(c)
Definition: diagnose.h:99