ceph/src/seastar/include/seastar/util/std-compat.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) 2018 ScyllaDB
  20  */
  21
  22 #pragma once
  23
  24 #include <optional>
  25 #include <string_view>
  26 #include <variant>
  27
  28 #include <filesystem>
  29
  30 #if __has_include(<memory_resource>)
  31 #include <memory_resource>
  32 #else
  33 #include <experimental/memory_resource>
  34 namespace std::pmr {
  35     using namespace std::experimental::pmr;
  36 }
  37 #endif
  38
  39 #if defined(__cpp_impl_coroutine) || defined(__cpp_coroutines)
  40 #define SEASTAR_COROUTINES_ENABLED
  41 #endif
  42
  43 // Defining SEASTAR_ASAN_ENABLED in here is a bit of a hack, but
  44 // convenient since it is build system independent and in practice
  45 // everything includes this header.
  46
  47 #ifndef __has_feature
  48 #define __has_feature(x) 0
  49 #endif
  50
  51 // clang uses __has_feature, gcc defines __SANITIZE_ADDRESS__
  52 #if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
  53 #define SEASTAR_ASAN_ENABLED
  54 #endif