package/inc/mutexholder.hxx

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  30
  31 #ifndef __MUTEXHOLDER_HXX_
  32 #define __MUTEXHOLDER_HXX_
  33
  34 #include <osl/mutex.hxx>
  35
  36 class SotMutexHolder
  37 {
  38     ::osl::Mutex m_aMutex;
  39     sal_Int32    m_nRefCount;
  40
  41     public:
  42     SotMutexHolder() : m_nRefCount( 0 ) {}
  43
  44     void AddRef()
  45     {
  46         m_nRefCount++;
  47     }
  48
  49     void ReleaseRef()
  50     {
  51         if ( !--m_nRefCount )
  52             delete this;
  53     }
  54
  55     ::osl::Mutex& GetMutex() { return m_aMutex; }
  56 };
  57
  58 class SotMutexHolderRef
  59 {
  60     SotMutexHolder* m_pHolder;
  61
  62 public:
  63     SotMutexHolderRef()
  64     : m_pHolder( NULL )
  65     {}
  66
  67     SotMutexHolderRef( SotMutexHolder* pHolder )
  68     : m_pHolder( pHolder )
  69     {
  70         if ( m_pHolder )
  71             m_pHolder->AddRef();
  72     }
  73
  74     SotMutexHolderRef( const SotMutexHolderRef& rRef )
  75     : m_pHolder( rRef.m_pHolder )
  76     {
  77         if ( m_pHolder )
  78             m_pHolder->AddRef();
  79     }
  80
  81     ~SotMutexHolderRef()
  82     {
  83         if ( m_pHolder )
  84             m_pHolder->ReleaseRef();
  85     }
  86
  87     SotMutexHolderRef& operator =( const SotMutexHolderRef& rRef )
  88     {
  89         if ( m_pHolder )
  90             m_pHolder->ReleaseRef();
  91
  92         m_pHolder = rRef.m_pHolder;
  93
  94         if ( m_pHolder )
  95             m_pHolder->AddRef();
  96
  97         return *this;
  98     }
  99
 100     SotMutexHolderRef& operator =( SotMutexHolder* pHolder )
 101     {
 102         if ( m_pHolder )
 103             m_pHolder->ReleaseRef();
 104
 105         m_pHolder = pHolder;
 106
 107         if ( m_pHolder )
 108             m_pHolder->AddRef();
 109         return *this;
 110     }
 111
 112     SotMutexHolder* operator ->() const
 113     {
 114         return m_pHolder;
 115     }
 116
 117     SotMutexHolder& operator *() const
 118     {
 119         return *m_pHolder;
 120     }
 121
 122     operator SotMutexHolder*() const
 123     {
 124         return m_pHolder;
 125     }
 126
 127     sal_Bool Is() const
 128     {
 129         return m_pHolder != NULL;
 130     }
 131 };
 132
 133 #endif
 134