ceph/src/seastar/include/seastar/util/concepts.hh

   1 /*
   2  * This file is open source software, licensed to you under the terms
   3  * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
   4  * distributed with this work for additional information regarding copyright
   5  * ownership.  You may not use this file except in compliance with the License.
   6  *
   7  * You may obtain a copy of the License at
   8  *
   9  *   http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing,
  12  * software distributed under the License is distributed on an
  13  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14  * KIND, either express or implied.  See the License for the
  15  * specific language governing permissions and limitations
  16  * under the License.
  17  */
  18 /*
  19  * Copyright (C) 2020 ScyllaDB
  20  */
  21 #pragma once
  22
  23 #if defined(__cpp_concepts) && __cpp_concepts >= 201907 && \
  24     defined(__cpp_lib_concepts) && __cpp_lib_concepts >= 201907
  25
  26 #define SEASTAR_CONCEPT(x...) x
  27 #define SEASTAR_NO_CONCEPT(x...)
  28
  29 #else
  30
  31 #define SEASTAR_CONCEPT(x...)
  32 #define SEASTAR_NO_CONCEPT(x...) x
  33
  34 #endif
  35