virtual void Visit(const DeviceCreateDesc& createDesc)
{
DeviceCreateDesc* devDesc;
// If found, mark as enumerated and we are done.
DeviceCreateDesc* descCandidate = 0;
for(devDesc = pManager->Devices.GetFirst();
!pManager->Devices.IsNull(devDesc); devDesc = devDesc->pNext)
{
DeviceCreateDesc::MatchResult mr = devDesc->MatchDevice(createDesc, &descCandidate);
if (mr == DeviceCreateDesc::Match_Found)
{
devDesc->Enumerated = true;
return;
}
}
// Update candidate (this may involve writing fields to HMDDevice createDesc).
if (descCandidate && descCandidate->UpdateMatchedCandidate(createDesc))
{
descCandidate->Enumerated = true;
return;
}
// If not found, add new device.
// - This stores a new descriptor with
// {pDevice = 0, HandleCount = 1, Enumerated = true}
DeviceCreateDesc* desc = createDesc.Clone();
desc->pLock = pManager->pCreateDesc->pLock;
pManager->Devices.PushBack(desc);
pManager->CallOnDeviceAdded(desc);
}
Ptr<DeviceCreateDesc> DeviceManagerImpl::FindDevice(
const String& path,
DeviceType deviceType)
{
Lock::Locker deviceLock(GetLock());
DeviceCreateDesc* devDesc;
for (devDesc = Devices.GetFirst();
!Devices.IsNull(devDesc); devDesc = devDesc->pNext)
{
if ((deviceType == Device_None || deviceType == devDesc->Type) &&
devDesc->MatchDevice(path))
return devDesc;
}
return NULL;
}
Ptr<DeviceCreateDesc> DeviceManagerImpl::AddDevice_NeedsLock(
const DeviceCreateDesc& createDesc)
{
// If found, mark as enumerated and we are done.
DeviceCreateDesc* descCandidate = 0;
for(DeviceCreateDesc* devDesc = Devices.GetFirst();
!Devices.IsNull(devDesc); devDesc = devDesc->pNext)
{
DeviceCreateDesc::MatchResult mr = devDesc->MatchDevice(createDesc, &descCandidate);
if (mr == DeviceCreateDesc::Match_Found)
{
devDesc->Enumerated = true;
if (!devDesc->pDevice)
CallOnDeviceAdded(devDesc);
return devDesc;
}
}
// Update candidate (this may involve writing fields to HMDDevice createDesc).
if (descCandidate)
{
bool newDevice = false;
if (descCandidate->UpdateMatchedCandidate(createDesc, &newDevice))
{
descCandidate->Enumerated = true;
if (!descCandidate->pDevice || newDevice)
CallOnDeviceAdded(descCandidate);
return descCandidate;
}
}
// If not found, add new device.
// - This stores a new descriptor with
// {pDevice = 0, HandleCount = 1, Enumerated = true}
DeviceCreateDesc* desc = createDesc.Clone();
desc->pLock = pCreateDesc->pLock;
Devices.PushBack(desc);
desc->Enumerated = true;
CallOnDeviceAdded(desc);
return desc;
}