inline svm_ptr<T> copy_to_device_map(HostIterator first,
HostIterator last,
svm_ptr<T> result,
command_queue &queue,
const wait_list &events)
{
size_t count = iterator_range_size(first, last);
if(count == 0){
return result;
}
// map
queue.enqueue_svm_map(
result.get(), count * sizeof(T), CL_MAP_WRITE, events
);
// copy [first; last) to result buffer
std::copy(first, last, static_cast<T*>(result.get()));
// unmap result
queue.enqueue_svm_unmap(result.get()).wait();
return result + count;
}
