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LibreOffice 6.0 SDK C/C++ API Reference
weak.hxx
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19 #ifndef INCLUDED_CPPUHELPER_WEAK_HXX
20 #define INCLUDED_CPPUHELPER_WEAK_HXX
21 
22 #include <cassert>
23 #include <cstddef>
24 #include <osl/interlck.h>
25 #include <rtl/alloc.h>
26 #include <com/sun/star/uno/XWeak.hpp>
28 
29 
30 namespace cppu
31 {
32 
33 class OWeakConnectionPoint;
34 
43 class CPPUHELPER_DLLPUBLIC OWeakObject : public css::uno::XWeak
44 {
45  friend class OWeakConnectionPoint;
46 
47 protected:
55 
60  void disposeWeakConnectionPoint();
61 
67  oslInterlockedCount m_refCount;
68 
70 
73  OWeakConnectionPoint * m_pWeakConnectionPoint;
74 
77  void * m_pReserved;
78 
80 
81 public:
83  // these are here to force memory de/allocation to sal lib.
84  static void * SAL_CALL operator new( size_t nSize )
85  { return ::rtl_allocateMemory( nSize ); }
86  static void SAL_CALL operator delete( void * pMem )
87  { ::rtl_freeMemory( pMem ); }
88  static void * SAL_CALL operator new( size_t, void * pMem )
89  { return pMem; }
90  static void SAL_CALL operator delete( void *, void * )
91  {}
93 
94 #ifdef _MSC_VER
95 
98  OWeakObject();
99 #else
100 
103  : m_refCount( 0 )
104  , m_pWeakConnectionPoint( NULL )
105  , m_pReserved(NULL)
106  {}
107 #endif
108 
111  : css::uno::XWeak()
112  , m_refCount( 0 )
113  , m_pWeakConnectionPoint( NULL )
114  , m_pReserved(NULL)
115  {}
120  OWeakObject & SAL_CALL operator = ( const OWeakObject &)
121  { return *this; }
122 
129  virtual css::uno::Any SAL_CALL queryInterface(
130  const css::uno::Type & rType ) SAL_OVERRIDE;
133  virtual void SAL_CALL acquire()
134  throw () SAL_OVERRIDE;
137  virtual void SAL_CALL release()
138  throw () SAL_OVERRIDE;
139 
144  virtual css::uno::Reference< css::uno::XAdapter > SAL_CALL queryAdapter() SAL_OVERRIDE;
145 
150  SAL_CALL operator css::uno::Reference< css::uno::XInterface > ()
151  { return this; }
152 };
153 
155 
166 static inline css::uno::XInterface * acquire(OWeakObject * instance)
167 {
168  assert(instance != NULL);
169  instance->acquire();
170  return instance;
171 }
173 
174 }
175 
176 #endif
177 
178 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Base class to implement an UNO object supporting weak references, i.e.
Definition: weak.hxx:43
OWeakObject()
Default Constructor.
Definition: weak.hxx:102
Definition: Enterable.hxx:26
css::uno::Any queryInterface(const css::uno::Type &rType, Interface1 *p1)
Compares demanded type to given template argument types.
Definition: queryinterface.hxx:39
virtual void acquire() SAL_OVERRIDE
increasing m_refCount
SAL_DLLPUBLIC void rtl_freeMemory(void *Ptr) SAL_THROW_EXTERN_C()
Free memory.
#define SAL_OVERRIDE
C++11 "override" feature.
Definition: types.h:415
Definition: types.h:383
#define COVERITY_NOEXCEPT_FALSE
To markup destructors that coverity warns might throw exceptions which won&#39;t throw in practice...
Definition: types.h:361
OWeakObject(const OWeakObject &)
Dummy copy constructor.
Definition: weak.hxx:110
sal_Int32 oslInterlockedCount
Definition: interlck.h:36
#define CPPUHELPER_DLLPUBLIC
Definition: cppuhelperdllapi.h:28
SAL_DLLPUBLIC void * rtl_allocateMemory(sal_Size Bytes) SAL_THROW_EXTERN_C()
Allocate memory.