int FreeCcw(Ccw *ccw)
{
lock (_lock)
{
// Shadow got resurrected by a call to QueryInterface from another thread
if (ccw->RefCount != 0)
{
return(ccw->RefCount);
}
var intPtr = new IntPtr(ccw);
var type = _backShadows[intPtr];
_backShadows.Remove(intPtr);
_shadows.Remove(type);
Marshal.FreeHGlobal(intPtr);
if (_shadows.Count == 0)
{
_handle?.Free();
_handle = null;
try
{
Target.OnUnreferencedFromNative();
}
catch (Exception e)
{
MicroComRuntime.UnhandledException(Target, e);
}
}
}
return(0);
}
internal int QueryInterface(Ccw *ccw, Guid *guid, void **ppv)
{
if (MicroComRuntime.TryGetTypeForGuid(*guid, out var type))
{
return(QueryInterface(type, ppv));
}
else
{
return(unchecked ((int)0x80004002u));
}
}
internal int Release(Ccw *ccw)
{
Interlocked.Decrement(ref _refCount);
var cnt = Interlocked.Decrement(ref ccw->RefCount);
if (cnt == 0)
{
return(FreeCcw(ccw));
}
return(cnt);
}
internal int AddRef(Ccw *ccw)
{
if (Interlocked.Increment(ref _refCount) == 1)
{
try
{
Target.OnReferencedFromNative();
}
catch (Exception e)
{
MicroComRuntime.UnhandledException(Target, e);
}
}
return(Interlocked.Increment(ref ccw->RefCount));
}
internal int QueryInterface(Ccw *ccw, Guid *guid, void **ppv)
{
if (MicroComRuntime.TryGetTypeForGuid(*guid, out var type))
{
return(QueryInterface(type, ppv));
}
else if (*guid == MicroComRuntime.ManagedObjectInterfaceGuid)
{
ccw->RefCount++;
*ppv = ccw;
return(0);
}
else
{
return(unchecked ((int)0x80004002u));
}
}
static int Release(Ccw *ccw) => ccw->GetShadow().Release(ccw);
static int AddRef(Ccw *ccw) => ccw->GetShadow().AddRef(ccw);
static int QueryInterface(Ccw *ccw, Guid *guid, void **ppv) => ccw->GetShadow().QueryInterface(ccw, guid, ppv);
