bool DeviceHandle::enumerateNext(const DeviceEnumerationArgs& args)
{
if (GetType() == Device_None)
return false;
Ptr<DeviceManagerImpl> managerKeepAlive;
Lock::Locker lockScope(pImpl->GetLock());
DeviceCreateDesc* next = pImpl;
// If manager was destroyed, we get removed from the list.
if (!pImpl->pNext)
return false;
managerKeepAlive = next->GetManagerImpl();
OVR_ASSERT(managerKeepAlive);
do {
next = next->pNext;
if (managerKeepAlive->Devices.IsNull(next))
{
pImpl->Release();
pImpl = 0;
return false;
}
} while(!args.MatchRule(next->Type, next->Enumerated));
next->AddRef();
pImpl->Release();
pImpl = next;
return true;
}
DeviceEnumerator<> DeviceManagerImpl::EnumerateDevicesEx(const DeviceEnumerationArgs& args)
{
Lock::Locker deviceLock(GetLock());
if (Devices.IsEmpty())
return DeviceEnumerator<>();
DeviceCreateDesc* firstDeviceDesc = Devices.GetFirst();
DeviceEnumerator<> e = enumeratorFromHandle(DeviceHandle(firstDeviceDesc), args);
if (!args.MatchRule(firstDeviceDesc->Type, firstDeviceDesc->Enumerated))
{
e.Next();
}
return e;
}