inline future<HostIterator> copy_to_host_async(svm_ptr<T> first,
svm_ptr<T> last,
HostIterator result,
command_queue &queue)
{
size_t count = iterator_range_size(first, last);
if(count == 0){
return result;
}
event event_ = queue.enqueue_svm_memcpy_async(
::boost::addressof(*result), first.get(), count * sizeof(T)
);
return make_future(iterator_plus_distance(result, count), event_);
}
inline future<svm_ptr<T> > copy_on_device_async(svm_ptr<T> first,
svm_ptr<T> last,
svm_ptr<T> result,
command_queue &queue)
{
size_t count = iterator_range_size(first, last);
if(count == 0){
return result;
}
event event_ = queue.enqueue_svm_memcpy_async(
result.get(), first.get(), count * sizeof(T)
);
return make_future(result + count, event_);
}
inline future<svm_ptr<T> > copy_to_device_async(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 future<svm_ptr<T> >();
}
event event_ = queue.enqueue_svm_memcpy_async(
result.get(), ::boost::addressof(*first), count * sizeof(T), events
);
return make_future(result + count, event_);
}