include/oneapi/dpl/internal/sycl_submitter_base_impl.h - implements struct __sycl_submitter_base

Author: SergeyKopienko

include/oneapi/dpl/internal/scan_by_segment_impl.h

@@ -48,6 +48,8 @@
 
 #include "../pstl/hetero/dpcpp/sycl_traits.h" //SYCL traits specialization for some oneDPL types.
 
+#include "sycl_submitter_base_impl.h"         // Base sycl submitter class
+
 namespace oneapi
 {
 namespace dpl
@@ -113,31 +115,22 @@ struct __sycl_scan_by_segment_submitter_factory
 };
 
 template <bool __is_inclusive, typename _ExecutionPolicy>
-struct __sycl_scan_by_segment_submitter
+struct __sycl_scan_by_segment_submitter : protected __sycl_submitter_base<_ExecutionPolicy>
 {
-    // We should instantiate this submitter only for cleared _ExecutionPolicy type
-    static_assert(std::is_same_v<_ExecutionPolicy, std::decay_t<_ExecutionPolicy>>);
-
     friend __sycl_scan_by_segment_submitter_factory;
 
-  protected:
+    template <typename... _Name>
+    using _SegScanWgPhase = __seg_scan_wg_kernel<__is_inclusive, _Name...>;
 
-    _ExecutionPolicy __exec;
+    template <typename... _Name>
+    using _SegScanPrefixPhase = __seg_scan_prefix_kernel<__is_inclusive, _Name...>;
 
     template <typename _ExecutionPolicyCtor>
     __sycl_scan_by_segment_submitter(_ExecutionPolicyCtor&& __exec)
+        : __sycl_submitter_base<_ExecutionPolicy>(std::forward<_ExecutionPolicyCtor>(__exec))
     {
-        __exec = std::forward<_ExecutionPolicyCtor>(__exec);
     }
 
-  public:
-
-    template <typename... _Name>
-    using _SegScanWgPhase = __seg_scan_wg_kernel<__is_inclusive, _Name...>;
-
-    template <typename... _Name>
-    using _SegScanPrefixPhase = __seg_scan_prefix_kernel<__is_inclusive, _Name...>;
-
     template <typename _BackendTag, typename _Range1, typename _Range2, typename _Range3, typename _BinaryPredicate,
               typename _BinaryOperator, typename _T>
     void

include/oneapi/dpl/internal/sycl_submitter_base_impl.h

@@ -0,0 +1,71 @@
+/* Copyright (c) 2023 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ *  
+ * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the NVIDIA CORPORATION nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ONEDPL_SYCL_SUBMITTER_BASE_IMPL_H
+#define _ONEDPL_SYCL_SUBMITTER_BASE_IMPL_H
+
+#if _ONEDPL_BACKEND_SYCL
+
+#include <type_traits>      // std::is_same_v, std::decay_t
+#include <utility>          // std::forward
+
+namespace oneapi
+{
+namespace dpl
+{
+namespace internal
+{
+
+////////////////////////////////////////////////////////////////////////////////
+// struct __sycl_submitter_base - base class for all sycl submitters
+template <typename _ExecutionPolicy>
+struct __sycl_submitter_base
+{
+  protected:
+
+    // We should instantiate this submitter only for cleared _ExecutionPolicy type
+    static_assert(std::is_same_v<_ExecutionPolicy, std::decay_t<_ExecutionPolicy>>);
+
+    // Execution policy for using inside submitter implementation
+    _ExecutionPolicy __exec;
+
+    template <typename _ExecutionPolicyCtor>
+    __sycl_submitter_base(_ExecutionPolicyCtor&& __exec)
+        : __exec(std::forward<_ExecutionPolicyCtor>(__exec))
+    {
+    }
+};
+
+} // namespace internal
+} // namespace dpl
+} // namespace oneapi
+
+#endif // _ONEDPL_BACKEND_SYCL
+
+#endif // _ONEDPL_SYCL_SUBMITTER_BASE_IMPL_H