/* * Copyright (c) 2022 Ivan Maidanski * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* As of clang-9, all __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n are missing. */ #define AO_GCC_FORCE_HAVE_CAS #if (__SIZEOF_SIZE_T__ == 4) \ || (defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16) && !defined(__clang__)) \ || (defined(__clang__) && __iset__ >= 5 /* elbrus-v5 or later */ \ && defined(AO_PREFER_BUILTIN_ATOMICS)) /* Note for 128-bit operations: clang reports warning */ /* "large atomic operation may incur significant performance penalty" */ /* and requires LDFLAGS="-latomic", thus this is not on by default. */ # define AO_GCC_HAVE_double_SYNC_CAS # include "../standard_ao_double_t.h" #endif #include "generic.h" #undef AO_GCC_FORCE_HAVE_CAS #undef AO_GCC_HAVE_double_SYNC_CAS