Sweden-Number/dlls/quartz/iunk.c

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/*
* An implementation of IUnknown.
*
* hidenori@a2.ctktv.ne.jp
*/
#include "config.h"
#include "windef.h"
#include "winerror.h"
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#include "winbase.h"
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#include "wine/obj_base.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(quartz);
#include "quartz_private.h"
#include "iunk.h"
static HRESULT WINAPI
IUnknown_fnQueryInterface(IUnknown* iface,REFIID riid,LPVOID *ppobj)
{
ICOM_THIS(QUARTZ_IUnkImpl,iface);
size_t ofs;
DWORD dwIndex;
QUARTZ_IFDelegation* pDelegation;
HRESULT hr;
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TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppobj);
if ( ppobj == NULL )
return E_POINTER;
*ppobj = NULL;
ofs = 0;
if ( IsEqualGUID( &IID_IUnknown, riid ) )
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{
TRACE("IID_IUnknown - returns inner object.\n");
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}
else
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{
for ( dwIndex = 0; dwIndex < This->dwEntries; dwIndex++ )
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{
if ( IsEqualGUID( This->pEntries[dwIndex].piid, riid ) )
{
ofs = This->pEntries[dwIndex].ofsVTPtr;
break;
}
}
if ( dwIndex == This->dwEntries )
{
hr = E_NOINTERFACE;
/* delegation */
pDelegation = This->pDelegationFirst;
while ( pDelegation != NULL )
{
hr = (*pDelegation->pOnQueryInterface)( iface, riid, ppobj );
if ( hr != E_NOINTERFACE )
break;
pDelegation = pDelegation->pNext;
}
if ( hr == E_NOINTERFACE )
{
FIXME("(%p) unknown interface: %s\n",This,debugstr_guid(riid));
}
return hr;
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}
}
*ppobj = (LPVOID)(((char*)This) + ofs);
IUnknown_AddRef((IUnknown*)(*ppobj));
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return S_OK;
}
static ULONG WINAPI
IUnknown_fnAddRef(IUnknown* iface)
{
ICOM_THIS(QUARTZ_IUnkImpl,iface);
TRACE("(%p)->()\n",This);
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return InterlockedExchangeAdd(&(This->ref),1) + 1;
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}
static ULONG WINAPI
IUnknown_fnRelease(IUnknown* iface)
{
ICOM_THIS(QUARTZ_IUnkImpl,iface);
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LONG ref;
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TRACE("(%p)->()\n",This);
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ref = InterlockedExchangeAdd(&(This->ref),-1) - 1;
if ( ref > 0 )
return (ULONG)ref;
if ( This->pOnFinalRelease != NULL )
(*(This->pOnFinalRelease))(iface);
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QUARTZ_FreeObj(This);
return 0;
}
static ICOM_VTABLE(IUnknown) iunknown =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
/* IUnknown fields */
IUnknown_fnQueryInterface,
IUnknown_fnAddRef,
IUnknown_fnRelease,
};
void QUARTZ_IUnkInit( QUARTZ_IUnkImpl* pImpl, IUnknown* punkOuter )
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{
TRACE("(%p)\n",pImpl);
ICOM_VTBL(pImpl) = &iunknown;
pImpl->pEntries = NULL;
pImpl->dwEntries = 0;
pImpl->pDelegationFirst = NULL;
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pImpl->pOnFinalRelease = NULL;
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pImpl->ref = 1;
pImpl->punkControl = (IUnknown*)pImpl;
/* for implementing aggregation. */
if ( punkOuter != NULL )
pImpl->punkControl = punkOuter;
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}
void QUARTZ_IUnkAddDelegation(
QUARTZ_IUnkImpl* pImpl, QUARTZ_IFDelegation* pDelegation )
{
pDelegation->pNext = pImpl->pDelegationFirst;
pImpl->pDelegationFirst = pDelegation;
}