sd/inc/helper/simplereferencecomponent.hxx

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   9  * This file incorporates work covered by the following license notice:
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  19
  20 #ifndef INCLUDED_SD_INC_HELPER_SIMPLEREFERENCECOMPONENT_HXX
  21 #define INCLUDED_SD_INC_HELPER_SIMPLEREFERENCECOMPONENT_HXX
  22
  23 #include <osl/interlck.h>
  24
  25 #include <sddllapi.h>
  26
  27 namespace sd
  28 {
  29 /** A simple base implementation for reference-counted components.
  30     acts like sal::SimpleReferenceObject but calls the virtual disposing()
  31     methods before the ref count switches from 1 to zero.
  32  */
  33 class SimpleReferenceComponent
  34 {
  35 public:
  36     SimpleReferenceComponent();
  37
  38     /** @ATTENTION
  39         The results are undefined if, for any individual instance of
  40         SimpleReferenceComponent, the total number of calls to acquire() exceeds
  41         the total number of calls to release() by a platform dependent amount
  42         (which, hopefully, is quite large).
  43      */
  44     void acquire();
  45     void release();
  46
  47     void Dispose();
  48
  49     bool isDisposed() const { return mbDisposed; }
  50
  51 protected:
  52     virtual void disposing();
  53
  54     virtual ~SimpleReferenceComponent();
  55
  56 private:
  57     oslInterlockedCount m_nCount;
  58
  59     SimpleReferenceComponent(SimpleReferenceComponent const&) = delete;
  60     void operator=(SimpleReferenceComponent const&) = delete;
  61
  62     bool mbDisposed;
  63 };
  64 }
  65
  66 #endif // _SALHELPER_SimpleReferenceComponent_HXX_
  67
  68 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */