sdk/lib/drivers/sound/stdunk/cunknown.cpp

   1 /*
   2     ReactOS Kernel-Mode COM
   3     IUnknown implementations
   4
   5     LICENSE
   6         Please see COPYING in the top-level directory for license information.
   7
   8     AUTHORS
   9         Andrew Greenwood
  10 */
  11
  12 #include <stdunk.h>
  13
  14 CUnknown::CUnknown(PUNKNOWN outer_unknown)
  15 {
  16     m_ref_count = 0;
  17
  18     if ( outer_unknown )
  19         m_outer_unknown = outer_unknown;
  20     else
  21         m_outer_unknown = PUNKNOWN(dynamic_cast<PNONDELEGATINGUNKNOWN>(this));
  22 }
  23
  24 CUnknown::~CUnknown()
  25 {
  26 }
  27
  28 STDMETHODIMP_(ULONG)
  29 CUnknown::NonDelegatingAddRef()
  30 {
  31     InterlockedIncrement(&m_ref_count);
  32     return m_ref_count;
  33 }
  34
  35 STDMETHODIMP_(ULONG)
  36 CUnknown::NonDelegatingRelease()
  37 {
  38     if ( InterlockedDecrement(&m_ref_count) == 0 )
  39     {
  40         m_ref_count ++;
  41         delete this;
  42         return 0;
  43     }
  44
  45     return m_ref_count;
  46 }
  47
  48 STDMETHODIMP_(NTSTATUS)
  49 CUnknown::NonDelegatingQueryInterface(
  50     IN  REFIID iid,
  51     PVOID* ppVoid)
  52 {
  53     /* FIXME */
  54     #if 0
  55     if ( IsEqualGUID(iid, IID_IUnknown) )   /* TODO: Aligned? */
  56         *ppVoid = PVOID(PUNKNOWN(this));
  57     else
  58         *ppVoid = NULL;
  59     #endif
  60
  61     if ( *ppVoid )
  62     {
  63         PUNKNOWN(*ppVoid)->AddRef();
  64         return STATUS_SUCCESS;
  65     }
  66
  67     return STATUS_INVALID_PARAMETER;
  68 }
  69
  70 #if __GNUC__
  71 extern "C" void __cxa_pure_virtual() { ASSERT(FALSE); }
  72 #endif