Introduce __make_future as free function to create __future<sycl::event>

Signed-off-by: Sergey Kopienko <[email protected]>

include/oneapi/dpl/pstl/hetero/dpcpp/parallel_backend_sycl.h

@@ -370,7 +370,7 @@ struct __parallel_scan_submitter<_CustomName, __internal::__optional_kernel_name
             });
         });
 
-        return __future<sycl::event, __result_and_scratch_storage_t>(std::move(__final_event), std::move(__result_and_scratch));
+        return __make_future(std::move(__final_event), std::move(__result_and_scratch));
     }
 };
 
@@ -639,7 +639,7 @@ struct __parallel_copy_if_static_single_group_submitter<_Size, _ElemsPerItem, _W
                     }
                 });
         });
-        return __future<sycl::event, __result_and_scratch_storage_t>(std::move(__event), std::move(__result));
+        return __make_future(std::move(__event), std::move(__result));
     }
 };
 
@@ -695,7 +695,7 @@ __parallel_transform_scan_single_group(oneapi::dpl::__internal::__device_backend
                         /* _IsFullGroup= */ ::std::false_type, _Inclusive, _CustomName>>>()(
                     ::std::forward<_ExecutionPolicy>(__exec), std::forward<_InRng>(__in_rng),
                     std::forward<_OutRng>(__out_rng), __n, __init, __binary_op, __unary_op);
-            return __future<sycl::event, __result_and_scratch_storage_t>(std::move(__event), std::move(__dummy_result_and_scratch));
+            return __make_future(std::move(__event), std::move(__dummy_result_and_scratch));
         };
         if (__n <= 16)
             return __single_group_scan_f(std::integral_constant<::std::uint16_t, 16>{});
@@ -729,7 +729,7 @@ __parallel_transform_scan_single_group(oneapi::dpl::__internal::__device_backend
             __parallel_transform_scan_dynamic_single_group_submitter<_Inclusive::value, _DynamicGroupScanKernel>()(
                 std::forward<_ExecutionPolicy>(__exec), std::forward<_InRng>(__in_rng),
                 std::forward<_OutRng>(__out_rng), __n, __init, __binary_op, __unary_op, __max_wg_size);
-        return __future<sycl::event, __result_and_scratch_storage_t>(std::move(__event), std::move(__dummy_result_and_scratch));
+        return __make_future(std::move(__event), std::move(__dummy_result_and_scratch));
     }
 }
 

include/oneapi/dpl/pstl/hetero/dpcpp/parallel_backend_sycl_reduce.h

@@ -154,7 +154,7 @@ struct __parallel_transform_reduce_small_submitter<_Tp, _Commutative, _VecSize,
                 });
         });
 
-        return __future<sycl::event, __result_and_scratch_storage_t>(std::move(__reduce_event), std::move(__scratch_container));
+        return __make_future(std::move(__reduce_event), std::move(__scratch_container));
     }
 }; // struct __parallel_transform_reduce_small_submitter
 
@@ -268,7 +268,7 @@ struct __parallel_transform_reduce_work_group_kernel_submitter<_Tp, _Commutative
                 });
         });
 
-        return __future<sycl::event, __result_and_scratch_storage_t>(std::move(__reduce_event), std::move(__scratch_container));
+        return __make_future(std::move(__reduce_event), std::move(__scratch_container));
     }
 }; // struct __parallel_transform_reduce_work_group_kernel_submitter
 
@@ -418,7 +418,7 @@ struct __parallel_transform_reduce_impl
             __n_groups = oneapi::dpl::__internal::__dpl_ceiling_div(__n, __size_per_work_group);
         } while (__n > 1);
 
-        return __future<sycl::event, __result_and_scratch_storage_t>(std::move(__reduce_event), std::move(__scratch_container));
+        return __make_future(std::move(__reduce_event), std::move(__scratch_container));
     }
 }; // struct __parallel_transform_reduce_impl