boost::shared_ptr<HubInstance>
DeviceManager::GetParentDevice(boost::shared_ptr<DeviceInstance> device) const
{
std::string parentLabel = device->GetParentID();
if (parentLabel.empty())
{
// no parent specified, but we will try to infer one anyway
// TODO So what happens if there is more than one hub in a given device
// adapter? Answer: bad things.
boost::shared_ptr<HubInstance> parentHub;
for (DeviceConstIterator it = devices_.begin(), end = devices_.end(); it != end; ++it)
{
if (it->second->GetType() == MM::HubDevice &&
device->GetAdapterModule() == it->second->GetAdapterModule())
{
parentHub = boost::static_pointer_cast<HubInstance>(it->second);
}
}
// This returns the last matching hub; not sure why it was coded that
// way, and it probably should be an error if there are more than 1.
// TODO We should probably throw when parentHub is null.
return parentHub;
}
else
{
for (DeviceConstIterator it = devices_.begin(), end = devices_.end(); it != end; ++it)
{
if (it->first == parentLabel &&
it->second->GetType() == MM::HubDevice &&
it->second->GetAdapterModule() == device->GetAdapterModule())
{
return boost::static_pointer_cast<HubInstance>(it->second);
}
}
// TODO We should probably throw when the parent is missing.
return boost::shared_ptr<HubInstance>();
}
}
DeviceModuleLockGuard::DeviceModuleLockGuard(boost::shared_ptr<DeviceInstance> device) :
g_(device->GetAdapterModule()->GetLock())
{}