CoCalc -- kmp

GitHub Repository: freebsd/freebsd-src
Path: blob/main/contrib/llvm-project/openmp/runtime/src/kmp_os.h
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/*
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 * kmp_os.h -- KPTS runtime header file.
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 */
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef KMP_OS_H
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#define KMP_OS_H
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#include "kmp_config.h"
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#include <atomic>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#define KMP_FTN_PLAIN 1
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#define KMP_FTN_APPEND 2
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#define KMP_FTN_UPPER 3
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/*
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#define KMP_FTN_PREPEND 4
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#define KMP_FTN_UAPPEND 5
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*/
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#define KMP_PTR_SKIP (sizeof(void *))
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/* -------------------------- Compiler variations ------------------------ */
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#define KMP_OFF 0
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#define KMP_ON 1
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#define KMP_MEM_CONS_VOLATILE 0
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#define KMP_MEM_CONS_FENCE 1
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#ifndef KMP_MEM_CONS_MODEL
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#define KMP_MEM_CONS_MODEL KMP_MEM_CONS_VOLATILE
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#endif
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#ifndef __has_cpp_attribute
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#define __has_cpp_attribute(x) 0
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#endif
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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/* ------------------------- Compiler recognition ---------------------- */
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#define KMP_COMPILER_ICC 0
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#define KMP_COMPILER_GCC 0
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#define KMP_COMPILER_CLANG 0
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#define KMP_COMPILER_MSVC 0
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#define KMP_COMPILER_ICX 0
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#if __INTEL_CLANG_COMPILER
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#undef KMP_COMPILER_ICX
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#define KMP_COMPILER_ICX 1
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#elif defined(__INTEL_COMPILER)
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#undef KMP_COMPILER_ICC
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#define KMP_COMPILER_ICC 1
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#elif defined(__clang__)
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#undef KMP_COMPILER_CLANG
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#define KMP_COMPILER_CLANG 1
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#elif defined(__GNUC__)
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#undef KMP_COMPILER_GCC
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#define KMP_COMPILER_GCC 1
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#elif defined(_MSC_VER)
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#undef KMP_COMPILER_MSVC
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#define KMP_COMPILER_MSVC 1
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#else
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#error Unknown compiler
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#endif
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#if (KMP_OS_LINUX || KMP_OS_WINDOWS || KMP_OS_FREEBSD || KMP_OS_NETBSD ||      \
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     KMP_OS_DRAGONFLY || KMP_OS_AIX) &&                                        \
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    !KMP_OS_WASI
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#define KMP_AFFINITY_SUPPORTED 1
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#if KMP_OS_WINDOWS && KMP_ARCH_X86_64
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#define KMP_GROUP_AFFINITY 1
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#else
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#define KMP_GROUP_AFFINITY 0
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#endif
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#else
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#define KMP_AFFINITY_SUPPORTED 0
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#define KMP_GROUP_AFFINITY 0
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#endif
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#if (KMP_OS_LINUX || (KMP_OS_FREEBSD && __FreeBSD_version >= 1301000))
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#define KMP_HAVE_SCHED_GETCPU 1
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#else
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#define KMP_HAVE_SCHED_GETCPU 0
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#endif
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/* Check for quad-precision extension. */
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#define KMP_HAVE_QUAD 0
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#if KMP_ARCH_X86 || KMP_ARCH_X86_64
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#if KMP_COMPILER_ICC || KMP_COMPILER_ICX
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/* _Quad is already defined for icc */
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#undef KMP_HAVE_QUAD
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#define KMP_HAVE_QUAD 1
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#elif KMP_COMPILER_CLANG
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/* Clang doesn't support a software-implemented
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   128-bit extended precision type yet */
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typedef long double _Quad;
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#elif KMP_COMPILER_GCC
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/* GCC on NetBSD lacks __multc3/__divtc3 builtins needed for quad until
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   NetBSD 10.0 which ships with GCC 10.5 */
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#if (!KMP_OS_NETBSD || __GNUC__ >= 10)
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typedef __float128 _Quad;
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#undef KMP_HAVE_QUAD
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#define KMP_HAVE_QUAD 1
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#endif
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#elif KMP_COMPILER_MSVC
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typedef long double _Quad;
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#endif
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#else
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#if __LDBL_MAX_EXP__ >= 16384 && KMP_COMPILER_GCC
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typedef long double _Quad;
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#undef KMP_HAVE_QUAD
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#define KMP_HAVE_QUAD 1
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#endif
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#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
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#define KMP_USE_X87CONTROL 0
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#if KMP_OS_WINDOWS
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#define KMP_END_OF_LINE "\r\n"
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typedef char kmp_int8;
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typedef unsigned char kmp_uint8;
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typedef short kmp_int16;
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typedef unsigned short kmp_uint16;
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typedef int kmp_int32;
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typedef unsigned int kmp_uint32;
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#define KMP_INT32_SPEC "d"
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#define KMP_UINT32_SPEC "u"
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#ifndef KMP_STRUCT64
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typedef __int64 kmp_int64;
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typedef unsigned __int64 kmp_uint64;
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#define KMP_INT64_SPEC "I64d"
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#define KMP_UINT64_SPEC "I64u"
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#else
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struct kmp_struct64 {
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  kmp_int32 a, b;
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};
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typedef struct kmp_struct64 kmp_int64;
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typedef struct kmp_struct64 kmp_uint64;
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/* Not sure what to use for KMP_[U]INT64_SPEC here */
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#endif
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#if KMP_ARCH_X86 && KMP_MSVC_COMPAT
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#undef KMP_USE_X87CONTROL
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#define KMP_USE_X87CONTROL 1
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#endif
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#if KMP_ARCH_X86_64 || KMP_ARCH_AARCH64
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#define KMP_INTPTR 1
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typedef __int64 kmp_intptr_t;
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typedef unsigned __int64 kmp_uintptr_t;
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#define KMP_INTPTR_SPEC "I64d"
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#define KMP_UINTPTR_SPEC "I64u"
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#endif
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#endif /* KMP_OS_WINDOWS */
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#if KMP_OS_UNIX
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#define KMP_END_OF_LINE "\n"
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typedef char kmp_int8;
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typedef unsigned char kmp_uint8;
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typedef short kmp_int16;
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typedef unsigned short kmp_uint16;
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typedef int kmp_int32;
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typedef unsigned int kmp_uint32;
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typedef long long kmp_int64;
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typedef unsigned long long kmp_uint64;
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#define KMP_INT32_SPEC "d"
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#define KMP_UINT32_SPEC "u"
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#define KMP_INT64_SPEC "lld"
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#define KMP_UINT64_SPEC "llu"
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#endif /* KMP_OS_UNIX */
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#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM ||          \
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    KMP_ARCH_PPC || KMP_ARCH_AARCH64_32
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#define KMP_SIZE_T_SPEC KMP_UINT32_SPEC
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#elif KMP_ARCH_X86_64 || KMP_ARCH_PPC64 || KMP_ARCH_AARCH64 ||                 \
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    KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 ||             \
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    KMP_ARCH_VE || KMP_ARCH_S390X
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#define KMP_SIZE_T_SPEC KMP_UINT64_SPEC
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#else
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#error "Can't determine size_t printf format specifier."
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#endif
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#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_WASM || KMP_ARCH_PPC
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#define KMP_SIZE_T_MAX (0xFFFFFFFF)
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#else
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#define KMP_SIZE_T_MAX (0xFFFFFFFFFFFFFFFF)
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#endif
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typedef size_t kmp_size_t;
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typedef float kmp_real32;
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typedef double kmp_real64;
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#ifndef KMP_INTPTR
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#define KMP_INTPTR 1
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typedef long kmp_intptr_t;
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typedef unsigned long kmp_uintptr_t;
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#define KMP_INTPTR_SPEC "ld"
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#define KMP_UINTPTR_SPEC "lu"
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#endif
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#ifdef BUILD_I8
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typedef kmp_int64 kmp_int;
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typedef kmp_uint64 kmp_uint;
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#else
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typedef kmp_int32 kmp_int;
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typedef kmp_uint32 kmp_uint;
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#endif /* BUILD_I8 */
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#define KMP_INT_MAX ((kmp_int32)0x7FFFFFFF)
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#define KMP_INT_MIN ((kmp_int32)0x80000000)
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// stdarg handling
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#if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64 || KMP_ARCH_WASM) &&  \
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    (KMP_OS_FREEBSD || KMP_OS_LINUX || KMP_OS_WASI)
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typedef va_list *kmp_va_list;
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#define kmp_va_deref(ap) (*(ap))
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#define kmp_va_addr_of(ap) (&(ap))
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#else
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typedef va_list kmp_va_list;
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#define kmp_va_deref(ap) (ap)
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#define kmp_va_addr_of(ap) (ap)
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#endif
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#ifdef __cplusplus
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// macros to cast out qualifiers and to re-interpret types
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#define CCAST(type, var) const_cast<type>(var)
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#define RCAST(type, var) reinterpret_cast<type>(var)
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//-------------------------------------------------------------------------
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// template for debug prints specification ( d, u, lld, llu ), and to obtain
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// signed/unsigned flavors of a type
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template <typename T> struct traits_t {};
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// int
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template <> struct traits_t<signed int> {
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  typedef signed int signed_t;
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  typedef unsigned int unsigned_t;
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  typedef double floating_t;
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  static char const *spec;
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  static const signed_t max_value = 0x7fffffff;
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  static const signed_t min_value = 0x80000000;
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  static const int type_size = sizeof(signed_t);
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};
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// unsigned int
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template <> struct traits_t<unsigned int> {
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  typedef signed int signed_t;
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  typedef unsigned int unsigned_t;
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  typedef double floating_t;
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  static char const *spec;
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  static const unsigned_t max_value = 0xffffffff;
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  static const unsigned_t min_value = 0x00000000;
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  static const int type_size = sizeof(unsigned_t);
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};
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// long
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template <> struct traits_t<signed long> {
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  typedef signed long signed_t;
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  typedef unsigned long unsigned_t;
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  typedef long double floating_t;
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  static char const *spec;
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  static const int type_size = sizeof(signed_t);
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};
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// long long
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template <> struct traits_t<signed long long> {
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  typedef signed long long signed_t;
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  typedef unsigned long long unsigned_t;
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  typedef long double floating_t;
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  static char const *spec;
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  static const signed_t max_value = 0x7fffffffffffffffLL;
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  static const signed_t min_value = 0x8000000000000000LL;
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  static const int type_size = sizeof(signed_t);
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};
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// unsigned long long
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template <> struct traits_t<unsigned long long> {
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  typedef signed long long signed_t;
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  typedef unsigned long long unsigned_t;
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  typedef long double floating_t;
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  static char const *spec;
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  static const unsigned_t max_value = 0xffffffffffffffffLL;
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  static const unsigned_t min_value = 0x0000000000000000LL;
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  static const int type_size = sizeof(unsigned_t);
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};
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//-------------------------------------------------------------------------
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#else
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#define CCAST(type, var) (type)(var)
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#define RCAST(type, var) (type)(var)
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#endif // __cplusplus
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#define KMP_EXPORT extern /* export declaration in guide libraries */
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#if __GNUC__ >= 4 && !defined(__MINGW32__)
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#define __forceinline __inline
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#endif
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/* Check if the OS/arch can support user-level mwait */
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// All mwait code tests for UMWAIT first, so it should only fall back to ring3
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// MWAIT for KNL.
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#define KMP_HAVE_MWAIT                                                         \
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  ((KMP_ARCH_X86 || KMP_ARCH_X86_64) && (KMP_OS_LINUX || KMP_OS_WINDOWS) &&    \
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   !KMP_MIC2)
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#define KMP_HAVE_UMWAIT                                                        \
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  ((KMP_ARCH_X86 || KMP_ARCH_X86_64) && (KMP_OS_LINUX || KMP_OS_WINDOWS) &&    \
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   !KMP_MIC)
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#if KMP_OS_WINDOWS
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// Don't include everything related to NT status code, we'll do that explicitly
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#define WIN32_NO_STATUS
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#include <windows.h>
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static inline int KMP_GET_PAGE_SIZE(void) {
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  SYSTEM_INFO si;
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  GetSystemInfo(&si);
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  return si.dwPageSize;
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}
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#else
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#define KMP_GET_PAGE_SIZE() getpagesize()
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#endif
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#define PAGE_ALIGNED(_addr)                                                    \
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  (!((size_t)_addr & (size_t)(KMP_GET_PAGE_SIZE() - 1)))
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#define ALIGN_TO_PAGE(x)                                                       \
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  (void *)(((size_t)(x)) & ~((size_t)(KMP_GET_PAGE_SIZE() - 1)))
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/* ---------- Support for cache alignment, padding, etc. ----------------*/
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#define INTERNODE_CACHE_LINE 4096 /* for multi-node systems */
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/* Define the default size of the cache line */
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#ifndef CACHE_LINE
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#define CACHE_LINE 128 /* cache line size in bytes */
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#else
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#if (CACHE_LINE < 64) && !defined(KMP_OS_DARWIN)
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// 2006-02-13: This produces too many warnings on OS X*. Disable for now
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#warning CACHE_LINE is too small.
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#endif
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#endif /* CACHE_LINE */
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#define KMP_CACHE_PREFETCH(ADDR) /* nothing */
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// Define attribute that indicates that the fall through from the previous
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// case label is intentional and should not be diagnosed by a compiler
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//   Code from libcxx/include/__config
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// Use a function like macro to imply that it must be followed by a semicolon
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#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough)
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#define KMP_FALLTHROUGH() [[fallthrough]]
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// icc cannot properly tell this attribute is absent so force off
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#elif KMP_COMPILER_ICC
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#define KMP_FALLTHROUGH() ((void)0)
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#elif __has_cpp_attribute(clang::fallthrough)
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#define KMP_FALLTHROUGH() [[clang::fallthrough]]
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#elif __has_attribute(fallthrough) || __GNUC__ >= 7
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#define KMP_FALLTHROUGH() __attribute__((__fallthrough__))
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#else
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#define KMP_FALLTHROUGH() ((void)0)
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#endif
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#if KMP_HAVE_ATTRIBUTE_WAITPKG
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#define KMP_ATTRIBUTE_TARGET_WAITPKG __attribute__((target("waitpkg")))
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#else
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#define KMP_ATTRIBUTE_TARGET_WAITPKG /* Nothing */
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#endif
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#if KMP_HAVE_ATTRIBUTE_RTM
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#define KMP_ATTRIBUTE_TARGET_RTM __attribute__((target("rtm")))
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#else
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#define KMP_ATTRIBUTE_TARGET_RTM /* Nothing */
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#endif
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// Define attribute that indicates a function does not return
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#if __cplusplus >= 201103L
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#define KMP_NORETURN [[noreturn]]
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#elif KMP_OS_WINDOWS
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#define KMP_NORETURN __declspec(noreturn)
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#else
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#define KMP_NORETURN __attribute__((noreturn))
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#endif
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#if KMP_OS_WINDOWS && KMP_MSVC_COMPAT
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#define KMP_ALIGN(bytes) __declspec(align(bytes))
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#define KMP_THREAD_LOCAL __declspec(thread)
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#define KMP_ALIAS /* Nothing */
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#else
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#define KMP_ALIGN(bytes) __attribute__((aligned(bytes)))
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#define KMP_THREAD_LOCAL __thread
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#define KMP_ALIAS(alias_of) __attribute__((alias(alias_of)))
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#endif
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#if KMP_HAVE_WEAK_ATTRIBUTE && !KMP_DYNAMIC_LIB
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#define KMP_WEAK_ATTRIBUTE_EXTERNAL __attribute__((weak))
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#else
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#define KMP_WEAK_ATTRIBUTE_EXTERNAL /* Nothing */
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#endif
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#if KMP_HAVE_WEAK_ATTRIBUTE
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#define KMP_WEAK_ATTRIBUTE_INTERNAL __attribute__((weak))
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#else
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#define KMP_WEAK_ATTRIBUTE_INTERNAL /* Nothing */
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#endif
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// Define KMP_VERSION_SYMBOL and KMP_EXPAND_NAME
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#ifndef KMP_STR
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#define KMP_STR(x) _KMP_STR(x)
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#define _KMP_STR(x) #x
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#endif
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#ifdef KMP_USE_VERSION_SYMBOLS
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// If using versioned symbols, KMP_EXPAND_NAME prepends
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// __kmp_api_ to the real API name
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#define KMP_EXPAND_NAME(api_name) _KMP_EXPAND_NAME(api_name)
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#define _KMP_EXPAND_NAME(api_name) __kmp_api_##api_name
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#define KMP_VERSION_SYMBOL(api_name, ver_num, ver_str)                         \
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  _KMP_VERSION_SYMBOL(api_name, ver_num, ver_str, "VERSION")
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#define _KMP_VERSION_SYMBOL(api_name, ver_num, ver_str, default_ver)            \
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  __typeof__(__kmp_api_##api_name) __kmp_api_##api_name##_##ver_num##_alias     \
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      __attribute__((alias(KMP_STR(__kmp_api_##api_name))));                    \
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  __asm__(                                                                      \
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      ".symver " KMP_STR(__kmp_api_##api_name##_##ver_num##_alias) "," KMP_STR( \
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          api_name) "@" ver_str "\n\t");                                        \
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  __asm__(".symver " KMP_STR(__kmp_api_##api_name) "," KMP_STR(                 \
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      api_name) "@@" default_ver "\n\t")
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#define KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num, ver_str)         \
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  _KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num, ver_str, "VERSION")
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#define _KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num, ver_str,          \
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                                 default_ver)                                    \
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  __typeof__(__kmp_api_##apic_name) __kmp_api_##apic_name##_##ver_num##_alias    \
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      __attribute__((alias(KMP_STR(__kmp_api_##apic_name))));                    \
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  __asm__(".symver " KMP_STR(__kmp_api_##apic_name) "," KMP_STR(                 \
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      apic_name) "@@" default_ver "\n\t");                                       \
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  __asm__(                                                                       \
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      ".symver " KMP_STR(__kmp_api_##apic_name##_##ver_num##_alias) "," KMP_STR( \
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          api_name) "@" ver_str "\n\t")
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#else // KMP_USE_VERSION_SYMBOLS
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#define KMP_EXPAND_NAME(api_name) api_name
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#define KMP_VERSION_SYMBOL(api_name, ver_num, ver_str) /* Nothing */
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#define KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num,                  \
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                                ver_str) /* Nothing */
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#endif // KMP_USE_VERSION_SYMBOLS
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/* Temporary note: if performance testing of this passes, we can remove
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   all references to KMP_DO_ALIGN and replace with KMP_ALIGN.  */
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#define KMP_DO_ALIGN(bytes) KMP_ALIGN(bytes)
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#define KMP_ALIGN_CACHE KMP_ALIGN(CACHE_LINE)
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#define KMP_ALIGN_CACHE_INTERNODE KMP_ALIGN(INTERNODE_CACHE_LINE)
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/* General purpose fence types for memory operations */
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enum kmp_mem_fence_type {
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  kmp_no_fence, /* No memory fence */
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  kmp_acquire_fence, /* Acquire (read) memory fence */
460
  kmp_release_fence, /* Release (write) memory fence */
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  kmp_full_fence /* Full (read+write) memory fence */
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};
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// Synchronization primitives
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#if KMP_ASM_INTRINS && KMP_OS_WINDOWS && !((KMP_ARCH_AARCH64 || KMP_ARCH_ARM) && (KMP_COMPILER_CLANG || KMP_COMPILER_GCC))
467

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#if KMP_MSVC_COMPAT && !KMP_COMPILER_CLANG
469
#pragma intrinsic(InterlockedExchangeAdd)
470
#pragma intrinsic(InterlockedCompareExchange)
471
#pragma intrinsic(InterlockedExchange)
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#if !KMP_32_BIT_ARCH
473
#pragma intrinsic(InterlockedExchange64)
474
#endif
475
#endif
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// Using InterlockedIncrement / InterlockedDecrement causes a library loading
478
// ordering problem, so we use InterlockedExchangeAdd instead.
479
#define KMP_TEST_THEN_INC32(p) InterlockedExchangeAdd((volatile long *)(p), 1)
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#define KMP_TEST_THEN_INC_ACQ32(p)                                             \
481
  InterlockedExchangeAdd((volatile long *)(p), 1)
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#define KMP_TEST_THEN_ADD4_32(p) InterlockedExchangeAdd((volatile long *)(p), 4)
483
#define KMP_TEST_THEN_ADD4_ACQ32(p)                                            \
484
  InterlockedExchangeAdd((volatile long *)(p), 4)
485
#define KMP_TEST_THEN_DEC32(p) InterlockedExchangeAdd((volatile long *)(p), -1)
486
#define KMP_TEST_THEN_DEC_ACQ32(p)                                             \
487
  InterlockedExchangeAdd((volatile long *)(p), -1)
488
#define KMP_TEST_THEN_ADD32(p, v)                                              \
489
  InterlockedExchangeAdd((volatile long *)(p), (v))
490

491
#define KMP_COMPARE_AND_STORE_RET32(p, cv, sv)                                 \
492
  InterlockedCompareExchange((volatile long *)(p), (long)(sv), (long)(cv))
493

494
#define KMP_XCHG_FIXED32(p, v)                                                 \
495
  InterlockedExchange((volatile long *)(p), (long)(v))
496
#define KMP_XCHG_FIXED64(p, v)                                                 \
497
  InterlockedExchange64((volatile kmp_int64 *)(p), (kmp_int64)(v))
498

499
inline kmp_real32 KMP_XCHG_REAL32(volatile kmp_real32 *p, kmp_real32 v) {
500
  kmp_int32 tmp = InterlockedExchange((volatile long *)p, *(long *)&v);
501
  return *(kmp_real32 *)&tmp;
502
}
503

504
#define KMP_TEST_THEN_OR8(p, v) __kmp_test_then_or8((p), (v))
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#define KMP_TEST_THEN_AND8(p, v) __kmp_test_then_and8((p), (v))
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#define KMP_TEST_THEN_OR32(p, v) __kmp_test_then_or32((p), (v))
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#define KMP_TEST_THEN_AND32(p, v) __kmp_test_then_and32((p), (v))
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#define KMP_TEST_THEN_OR64(p, v) __kmp_test_then_or64((p), (v))
509
#define KMP_TEST_THEN_AND64(p, v) __kmp_test_then_and64((p), (v))
510

511
extern kmp_int8 __kmp_test_then_or8(volatile kmp_int8 *p, kmp_int8 v);
512
extern kmp_int8 __kmp_test_then_and8(volatile kmp_int8 *p, kmp_int8 v);
513
extern kmp_int32 __kmp_test_then_add32(volatile kmp_int32 *p, kmp_int32 v);
514
extern kmp_uint32 __kmp_test_then_or32(volatile kmp_uint32 *p, kmp_uint32 v);
515
extern kmp_uint32 __kmp_test_then_and32(volatile kmp_uint32 *p, kmp_uint32 v);
516
extern kmp_int64 __kmp_test_then_add64(volatile kmp_int64 *p, kmp_int64 v);
517
extern kmp_uint64 __kmp_test_then_or64(volatile kmp_uint64 *p, kmp_uint64 v);
518
extern kmp_uint64 __kmp_test_then_and64(volatile kmp_uint64 *p, kmp_uint64 v);
519

520
#if KMP_ARCH_AARCH64 && KMP_COMPILER_MSVC && !KMP_COMPILER_CLANG
521
#define KMP_TEST_THEN_INC64(p) _InterlockedExchangeAdd64((p), 1LL)
522
#define KMP_TEST_THEN_INC_ACQ64(p) _InterlockedExchangeAdd64_acq((p), 1LL)
523
#define KMP_TEST_THEN_ADD4_64(p) _InterlockedExchangeAdd64((p), 4LL)
524
// #define KMP_TEST_THEN_ADD4_ACQ64(p) _InterlockedExchangeAdd64_acq((p), 4LL)
525
// #define KMP_TEST_THEN_DEC64(p) _InterlockedExchangeAdd64((p), -1LL)
526
// #define KMP_TEST_THEN_DEC_ACQ64(p) _InterlockedExchangeAdd64_acq((p), -1LL)
527
// #define KMP_TEST_THEN_ADD8(p, v) _InterlockedExchangeAdd8((p), (v))
528
#define KMP_TEST_THEN_ADD64(p, v) _InterlockedExchangeAdd64((p), (v))
529

530
#define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv)                                  \
531
  __kmp_compare_and_store_acq8((p), (cv), (sv))
532
#define KMP_COMPARE_AND_STORE_REL8(p, cv, sv)                                  \
533
  __kmp_compare_and_store_rel8((p), (cv), (sv))
534
#define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv)                                 \
535
  __kmp_compare_and_store_acq16((p), (cv), (sv))
536
/*
537
#define KMP_COMPARE_AND_STORE_REL16(p, cv, sv)                                 \
538
  __kmp_compare_and_store_rel16((p), (cv), (sv))
539
*/
540
#define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv)                                 \
541
  __kmp_compare_and_store_acq32((volatile kmp_int32 *)(p), (kmp_int32)(cv),    \
542
                                (kmp_int32)(sv))
543
#define KMP_COMPARE_AND_STORE_REL32(p, cv, sv)                                 \
544
  __kmp_compare_and_store_rel32((volatile kmp_int32 *)(p), (kmp_int32)(cv),    \
545
                                (kmp_int32)(sv))
546
#define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv)                                 \
547
  __kmp_compare_and_store_acq64((volatile kmp_int64 *)(p), (kmp_int64)(cv),    \
548
                                (kmp_int64)(sv))
549
#define KMP_COMPARE_AND_STORE_REL64(p, cv, sv)                                 \
550
  __kmp_compare_and_store_rel64((volatile kmp_int64 *)(p), (kmp_int64)(cv),    \
551
                                (kmp_int64)(sv))
552
#define KMP_COMPARE_AND_STORE_PTR(p, cv, sv)                                   \
553
  __kmp_compare_and_store_ptr((void *volatile *)(p), (void *)(cv), (void *)(sv))
554

555
//  KMP_COMPARE_AND_STORE expects this order:       pointer, compare, exchange
556
// _InterlockedCompareExchange expects this order:  pointer, exchange, compare
557
// KMP_COMPARE_AND_STORE also returns a bool indicating a successful write. A
558
// write is successful if the return value of _InterlockedCompareExchange is the
559
// same as the compare value.
560
inline kmp_int8 __kmp_compare_and_store_acq8(volatile kmp_int8 *p, kmp_int8 cv,
561
                                             kmp_int8 sv) {
562
  return _InterlockedCompareExchange8_acq(p, sv, cv) == cv;
563
}
564

565
inline kmp_int8 __kmp_compare_and_store_rel8(volatile kmp_int8 *p, kmp_int8 cv,
566
                                             kmp_int8 sv) {
567
  return _InterlockedCompareExchange8_rel(p, sv, cv) == cv;
568
}
569

570
inline kmp_int16 __kmp_compare_and_store_acq16(volatile kmp_int16 *p,
571
                                               kmp_int16 cv, kmp_int16 sv) {
572
  return _InterlockedCompareExchange16_acq(p, sv, cv) == cv;
573
}
574

575
inline kmp_int16 __kmp_compare_and_store_rel16(volatile kmp_int16 *p,
576
                                               kmp_int16 cv, kmp_int16 sv) {
577
  return _InterlockedCompareExchange16_rel(p, sv, cv) == cv;
578
}
579

580
inline kmp_int32 __kmp_compare_and_store_acq32(volatile kmp_int32 *p,
581
                                               kmp_int32 cv, kmp_int32 sv) {
582
  return _InterlockedCompareExchange_acq((volatile long *)p, sv, cv) == cv;
583
}
584

585
inline kmp_int32 __kmp_compare_and_store_rel32(volatile kmp_int32 *p,
586
                                               kmp_int32 cv, kmp_int32 sv) {
587
  return _InterlockedCompareExchange_rel((volatile long *)p, sv, cv) == cv;
588
}
589

590
inline kmp_int32 __kmp_compare_and_store_acq64(volatile kmp_int64 *p,
591
                                               kmp_int64 cv, kmp_int64 sv) {
592
  return _InterlockedCompareExchange64_acq(p, sv, cv) == cv;
593
}
594

595
inline kmp_int32 __kmp_compare_and_store_rel64(volatile kmp_int64 *p,
596
                                               kmp_int64 cv, kmp_int64 sv) {
597
  return _InterlockedCompareExchange64_rel(p, sv, cv) == cv;
598
}
599

600
inline kmp_int32 __kmp_compare_and_store_ptr(void *volatile *p, void *cv,
601
                                             void *sv) {
602
  return _InterlockedCompareExchangePointer(p, sv, cv) == cv;
603
}
604

605
// The _RET versions return the value instead of a bool
606

607
#define KMP_COMPARE_AND_STORE_RET8(p, cv, sv)                                  \
608
   _InterlockedCompareExchange8((p), (sv), (cv))
609
#define KMP_COMPARE_AND_STORE_RET16(p, cv, sv)                                 \
610
  _InterlockedCompareExchange16((p), (sv), (cv))
611

612
#define KMP_COMPARE_AND_STORE_RET64(p, cv, sv)                                 \
613
  _InterlockedCompareExchange64((volatile kmp_int64 *)(p), (kmp_int64)(sv),    \
614
                                (kmp_int64)(cv))
615

616

617
#define KMP_XCHG_FIXED8(p, v)                                                  \
618
  _InterlockedExchange8((volatile kmp_int8 *)(p), (kmp_int8)(v));
619
#define KMP_XCHG_FIXED16(p, v) _InterlockedExchange16((p), (v));
620
#define KMP_XCHG_REAL64(p, v) __kmp_xchg_real64((p), (v));
621

622
inline kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v) {
623
  kmp_int64 tmp = _InterlockedExchange64((volatile kmp_int64 *)p, *(kmp_int64
624
  *)&v); return *(kmp_real64 *)&tmp;
625
}
626

627
#else // !KMP_ARCH_AARCH64
628

629
// Routines that we still need to implement in assembly.
630
extern kmp_int8 __kmp_test_then_add8(volatile kmp_int8 *p, kmp_int8 v);
631

632
extern kmp_int8 __kmp_compare_and_store8(volatile kmp_int8 *p, kmp_int8 cv,
633
                                         kmp_int8 sv);
634
extern kmp_int16 __kmp_compare_and_store16(volatile kmp_int16 *p, kmp_int16 cv,
635
                                           kmp_int16 sv);
636
extern kmp_int32 __kmp_compare_and_store32(volatile kmp_int32 *p, kmp_int32 cv,
637
                                           kmp_int32 sv);
638
extern kmp_int32 __kmp_compare_and_store64(volatile kmp_int64 *p, kmp_int64 cv,
639
                                           kmp_int64 sv);
640
extern kmp_int8 __kmp_compare_and_store_ret8(volatile kmp_int8 *p, kmp_int8 cv,
641
                                             kmp_int8 sv);
642
extern kmp_int16 __kmp_compare_and_store_ret16(volatile kmp_int16 *p,
643
                                               kmp_int16 cv, kmp_int16 sv);
644
extern kmp_int32 __kmp_compare_and_store_ret32(volatile kmp_int32 *p,
645
                                               kmp_int32 cv, kmp_int32 sv);
646
extern kmp_int64 __kmp_compare_and_store_ret64(volatile kmp_int64 *p,
647
                                               kmp_int64 cv, kmp_int64 sv);
648

649
extern kmp_int8 __kmp_xchg_fixed8(volatile kmp_int8 *p, kmp_int8 v);
650
extern kmp_int16 __kmp_xchg_fixed16(volatile kmp_int16 *p, kmp_int16 v);
651
extern kmp_int32 __kmp_xchg_fixed32(volatile kmp_int32 *p, kmp_int32 v);
652
extern kmp_int64 __kmp_xchg_fixed64(volatile kmp_int64 *p, kmp_int64 v);
653
extern kmp_real32 __kmp_xchg_real32(volatile kmp_real32 *p, kmp_real32 v);
654
extern kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v);
655

656
//#define KMP_TEST_THEN_INC32(p) __kmp_test_then_add32((p), 1)
657
//#define KMP_TEST_THEN_INC_ACQ32(p) __kmp_test_then_add32((p), 1)
658
#define KMP_TEST_THEN_INC64(p) __kmp_test_then_add64((p), 1LL)
659
#define KMP_TEST_THEN_INC_ACQ64(p) __kmp_test_then_add64((p), 1LL)
660
//#define KMP_TEST_THEN_ADD4_32(p) __kmp_test_then_add32((p), 4)
661
//#define KMP_TEST_THEN_ADD4_ACQ32(p) __kmp_test_then_add32((p), 4)
662
#define KMP_TEST_THEN_ADD4_64(p) __kmp_test_then_add64((p), 4LL)
663
#define KMP_TEST_THEN_ADD4_ACQ64(p) __kmp_test_then_add64((p), 4LL)
664
//#define KMP_TEST_THEN_DEC32(p) __kmp_test_then_add32((p), -1)
665
//#define KMP_TEST_THEN_DEC_ACQ32(p) __kmp_test_then_add32((p), -1)
666
#define KMP_TEST_THEN_DEC64(p) __kmp_test_then_add64((p), -1LL)
667
#define KMP_TEST_THEN_DEC_ACQ64(p) __kmp_test_then_add64((p), -1LL)
668
//#define KMP_TEST_THEN_ADD32(p, v) __kmp_test_then_add32((p), (v))
669
#define KMP_TEST_THEN_ADD8(p, v) __kmp_test_then_add8((p), (v))
670
#define KMP_TEST_THEN_ADD64(p, v) __kmp_test_then_add64((p), (v))
671

672

673
#define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv)                                  \
674
  __kmp_compare_and_store8((p), (cv), (sv))
675
#define KMP_COMPARE_AND_STORE_REL8(p, cv, sv)                                  \
676
  __kmp_compare_and_store8((p), (cv), (sv))
677
#define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv)                                 \
678
  __kmp_compare_and_store16((p), (cv), (sv))
679
#define KMP_COMPARE_AND_STORE_REL16(p, cv, sv)                                 \
680
  __kmp_compare_and_store16((p), (cv), (sv))
681
#define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv)                                 \
682
  __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv),        \
683
                            (kmp_int32)(sv))
684
#define KMP_COMPARE_AND_STORE_REL32(p, cv, sv)                                 \
685
  __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv),        \
686
                            (kmp_int32)(sv))
687
#define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv)                                 \
688
  __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv),        \
689
                            (kmp_int64)(sv))
690
#define KMP_COMPARE_AND_STORE_REL64(p, cv, sv)                                 \
691
  __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv),        \
692
                            (kmp_int64)(sv))
693

694
#if KMP_ARCH_X86
695
#define KMP_COMPARE_AND_STORE_PTR(p, cv, sv)                                   \
696
  __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv),        \
697
                            (kmp_int32)(sv))
698
#else /* 64 bit pointers */
699
#define KMP_COMPARE_AND_STORE_PTR(p, cv, sv)                                   \
700
  __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv),        \
701
                            (kmp_int64)(sv))
702
#endif /* KMP_ARCH_X86 */
703

704
#define KMP_COMPARE_AND_STORE_RET8(p, cv, sv)                                  \
705
  __kmp_compare_and_store_ret8((p), (cv), (sv))
706
#define KMP_COMPARE_AND_STORE_RET16(p, cv, sv)                                 \
707
  __kmp_compare_and_store_ret16((p), (cv), (sv))
708
#define KMP_COMPARE_AND_STORE_RET64(p, cv, sv)                                 \
709
  __kmp_compare_and_store_ret64((volatile kmp_int64 *)(p), (kmp_int64)(cv),    \
710
                                (kmp_int64)(sv))
711

712
#define KMP_XCHG_FIXED8(p, v)                                                  \
713
  __kmp_xchg_fixed8((volatile kmp_int8 *)(p), (kmp_int8)(v));
714
#define KMP_XCHG_FIXED16(p, v) __kmp_xchg_fixed16((p), (v));
715
//#define KMP_XCHG_FIXED32(p, v) __kmp_xchg_fixed32((p), (v));
716
//#define KMP_XCHG_FIXED64(p, v) __kmp_xchg_fixed64((p), (v));
717
//#define KMP_XCHG_REAL32(p, v) __kmp_xchg_real32((p), (v));
718
#define KMP_XCHG_REAL64(p, v) __kmp_xchg_real64((p), (v));
719
#endif
720

721
#elif (KMP_ASM_INTRINS && KMP_OS_UNIX) || !(KMP_ARCH_X86 || KMP_ARCH_X86_64)
722

723
/* cast p to correct type so that proper intrinsic will be used */
724
#define KMP_TEST_THEN_INC32(p)                                                 \
725
  __sync_fetch_and_add((volatile kmp_int32 *)(p), 1)
726
#define KMP_TEST_THEN_INC_ACQ32(p)                                             \
727
  __sync_fetch_and_add((volatile kmp_int32 *)(p), 1)
728
#if KMP_ARCH_MIPS
729
#define KMP_TEST_THEN_INC64(p)                                                 \
730
  __atomic_fetch_add((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST)
731
#define KMP_TEST_THEN_INC_ACQ64(p)                                             \
732
  __atomic_fetch_add((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST)
733
#else
734
#define KMP_TEST_THEN_INC64(p)                                                 \
735
  __sync_fetch_and_add((volatile kmp_int64 *)(p), 1LL)
736
#define KMP_TEST_THEN_INC_ACQ64(p)                                             \
737
  __sync_fetch_and_add((volatile kmp_int64 *)(p), 1LL)
738
#endif
739
#define KMP_TEST_THEN_ADD4_32(p)                                               \
740
  __sync_fetch_and_add((volatile kmp_int32 *)(p), 4)
741
#define KMP_TEST_THEN_ADD4_ACQ32(p)                                            \
742
  __sync_fetch_and_add((volatile kmp_int32 *)(p), 4)
743
#if KMP_ARCH_MIPS
744
#define KMP_TEST_THEN_ADD4_64(p)                                               \
745
  __atomic_fetch_add((volatile kmp_int64 *)(p), 4LL, __ATOMIC_SEQ_CST)
746
#define KMP_TEST_THEN_ADD4_ACQ64(p)                                            \
747
  __atomic_fetch_add((volatile kmp_int64 *)(p), 4LL, __ATOMIC_SEQ_CST)
748
#define KMP_TEST_THEN_DEC64(p)                                                 \
749
  __atomic_fetch_sub((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST)
750
#define KMP_TEST_THEN_DEC_ACQ64(p)                                             \
751
  __atomic_fetch_sub((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST)
752
#else
753
#define KMP_TEST_THEN_ADD4_64(p)                                               \
754
  __sync_fetch_and_add((volatile kmp_int64 *)(p), 4LL)
755
#define KMP_TEST_THEN_ADD4_ACQ64(p)                                            \
756
  __sync_fetch_and_add((volatile kmp_int64 *)(p), 4LL)
757
#define KMP_TEST_THEN_DEC64(p)                                                 \
758
  __sync_fetch_and_sub((volatile kmp_int64 *)(p), 1LL)
759
#define KMP_TEST_THEN_DEC_ACQ64(p)                                             \
760
  __sync_fetch_and_sub((volatile kmp_int64 *)(p), 1LL)
761
#endif
762
#define KMP_TEST_THEN_DEC32(p)                                                 \
763
  __sync_fetch_and_sub((volatile kmp_int32 *)(p), 1)
764
#define KMP_TEST_THEN_DEC_ACQ32(p)                                             \
765
  __sync_fetch_and_sub((volatile kmp_int32 *)(p), 1)
766
#define KMP_TEST_THEN_ADD8(p, v)                                               \
767
  __sync_fetch_and_add((volatile kmp_int8 *)(p), (kmp_int8)(v))
768
#define KMP_TEST_THEN_ADD32(p, v)                                              \
769
  __sync_fetch_and_add((volatile kmp_int32 *)(p), (kmp_int32)(v))
770
#if KMP_ARCH_MIPS
771
#define KMP_TEST_THEN_ADD64(p, v)                                              \
772
  __atomic_fetch_add((volatile kmp_uint64 *)(p), (kmp_uint64)(v),              \
773
                     __ATOMIC_SEQ_CST)
774
#else
775
#define KMP_TEST_THEN_ADD64(p, v)                                              \
776
  __sync_fetch_and_add((volatile kmp_int64 *)(p), (kmp_int64)(v))
777
#endif
778

779
#define KMP_TEST_THEN_OR8(p, v)                                                \
780
  __sync_fetch_and_or((volatile kmp_int8 *)(p), (kmp_int8)(v))
781
#define KMP_TEST_THEN_AND8(p, v)                                               \
782
  __sync_fetch_and_and((volatile kmp_int8 *)(p), (kmp_int8)(v))
783
#define KMP_TEST_THEN_OR32(p, v)                                               \
784
  __sync_fetch_and_or((volatile kmp_uint32 *)(p), (kmp_uint32)(v))
785
#define KMP_TEST_THEN_AND32(p, v)                                              \
786
  __sync_fetch_and_and((volatile kmp_uint32 *)(p), (kmp_uint32)(v))
787
#if KMP_ARCH_MIPS
788
#define KMP_TEST_THEN_OR64(p, v)                                               \
789
  __atomic_fetch_or((volatile kmp_uint64 *)(p), (kmp_uint64)(v),               \
790
                    __ATOMIC_SEQ_CST)
791
#define KMP_TEST_THEN_AND64(p, v)                                              \
792
  __atomic_fetch_and((volatile kmp_uint64 *)(p), (kmp_uint64)(v),              \
793
                     __ATOMIC_SEQ_CST)
794
#else
795
#define KMP_TEST_THEN_OR64(p, v)                                               \
796
  __sync_fetch_and_or((volatile kmp_uint64 *)(p), (kmp_uint64)(v))
797
#define KMP_TEST_THEN_AND64(p, v)                                              \
798
  __sync_fetch_and_and((volatile kmp_uint64 *)(p), (kmp_uint64)(v))
799
#endif
800

801
#define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv)                                  \
802
  __sync_bool_compare_and_swap((volatile kmp_uint8 *)(p), (kmp_uint8)(cv),     \
803
                               (kmp_uint8)(sv))
804
#define KMP_COMPARE_AND_STORE_REL8(p, cv, sv)                                  \
805
  __sync_bool_compare_and_swap((volatile kmp_uint8 *)(p), (kmp_uint8)(cv),     \
806
                               (kmp_uint8)(sv))
807
#define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv)                                 \
808
  __sync_bool_compare_and_swap((volatile kmp_uint16 *)(p), (kmp_uint16)(cv),   \
809
                               (kmp_uint16)(sv))
810
#define KMP_COMPARE_AND_STORE_REL16(p, cv, sv)                                 \
811
  __sync_bool_compare_and_swap((volatile kmp_uint16 *)(p), (kmp_uint16)(cv),   \
812
                               (kmp_uint16)(sv))
813
#define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv)                                 \
814
  __sync_bool_compare_and_swap((volatile kmp_uint32 *)(p), (kmp_uint32)(cv),   \
815
                               (kmp_uint32)(sv))
816
#define KMP_COMPARE_AND_STORE_REL32(p, cv, sv)                                 \
817
  __sync_bool_compare_and_swap((volatile kmp_uint32 *)(p), (kmp_uint32)(cv),   \
818
                               (kmp_uint32)(sv))
819
#define KMP_COMPARE_AND_STORE_PTR(p, cv, sv)                                   \
820
  __sync_bool_compare_and_swap((void *volatile *)(p), (void *)(cv),            \
821
                               (void *)(sv))
822

823
#define KMP_COMPARE_AND_STORE_RET8(p, cv, sv)                                  \
824
  __sync_val_compare_and_swap((volatile kmp_uint8 *)(p), (kmp_uint8)(cv),      \
825
                              (kmp_uint8)(sv))
826
#define KMP_COMPARE_AND_STORE_RET16(p, cv, sv)                                 \
827
  __sync_val_compare_and_swap((volatile kmp_uint16 *)(p), (kmp_uint16)(cv),    \
828
                              (kmp_uint16)(sv))
829
#define KMP_COMPARE_AND_STORE_RET32(p, cv, sv)                                 \
830
  __sync_val_compare_and_swap((volatile kmp_uint32 *)(p), (kmp_uint32)(cv),    \
831
                              (kmp_uint32)(sv))
832
#if KMP_ARCH_MIPS
833
static inline bool mips_sync_bool_compare_and_swap(volatile kmp_uint64 *p,
834
                                                   kmp_uint64 cv,
835
                                                   kmp_uint64 sv) {
836
  return __atomic_compare_exchange(p, &cv, &sv, false, __ATOMIC_SEQ_CST,
837
                                   __ATOMIC_SEQ_CST);
838
}
839
static inline bool mips_sync_val_compare_and_swap(volatile kmp_uint64 *p,
840
                                                  kmp_uint64 cv,
841
                                                  kmp_uint64 sv) {
842
  __atomic_compare_exchange(p, &cv, &sv, false, __ATOMIC_SEQ_CST,
843
                            __ATOMIC_SEQ_CST);
844
  return cv;
845
}
846
#define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv)                                 \
847
  mips_sync_bool_compare_and_swap((volatile kmp_uint64 *)(p),                  \
848
                                  (kmp_uint64)(cv), (kmp_uint64)(sv))
849
#define KMP_COMPARE_AND_STORE_REL64(p, cv, sv)                                 \
850
  mips_sync_bool_compare_and_swap((volatile kmp_uint64 *)(p),                  \
851
                                  (kmp_uint64)(cv), (kmp_uint64)(sv))
852
#define KMP_COMPARE_AND_STORE_RET64(p, cv, sv)                                 \
853
  mips_sync_val_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv), \
854
                                 (kmp_uint64)(sv))
855
#else
856
#define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv)                                 \
857
  __sync_bool_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv),   \
858
                               (kmp_uint64)(sv))
859
#define KMP_COMPARE_AND_STORE_REL64(p, cv, sv)                                 \
860
  __sync_bool_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv),   \
861
                               (kmp_uint64)(sv))
862
#define KMP_COMPARE_AND_STORE_RET64(p, cv, sv)                                 \
863
  __sync_val_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv),    \
864
                              (kmp_uint64)(sv))
865
#endif
866

867
#if KMP_OS_DARWIN && defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1800
868
#define KMP_XCHG_FIXED8(p, v)                                                  \
869
  __atomic_exchange_1((volatile kmp_uint8 *)(p), (kmp_uint8)(v),               \
870
                      __ATOMIC_SEQ_CST)
871
#else
872
#define KMP_XCHG_FIXED8(p, v)                                                  \
873
  __sync_lock_test_and_set((volatile kmp_uint8 *)(p), (kmp_uint8)(v))
874
#endif
875
#define KMP_XCHG_FIXED16(p, v)                                                 \
876
  __sync_lock_test_and_set((volatile kmp_uint16 *)(p), (kmp_uint16)(v))
877
#define KMP_XCHG_FIXED32(p, v)                                                 \
878
  __sync_lock_test_and_set((volatile kmp_uint32 *)(p), (kmp_uint32)(v))
879
#define KMP_XCHG_FIXED64(p, v)                                                 \
880
  __sync_lock_test_and_set((volatile kmp_uint64 *)(p), (kmp_uint64)(v))
881

882
inline kmp_real32 KMP_XCHG_REAL32(volatile kmp_real32 *p, kmp_real32 v) {
883
  volatile kmp_uint32 *up;
884
  kmp_uint32 uv;
885
  memcpy(&up, &p, sizeof(up));
886
  memcpy(&uv, &v, sizeof(uv));
887
  kmp_int32 tmp = __sync_lock_test_and_set(up, uv);
888
  kmp_real32 ftmp;
889
  memcpy(&ftmp, &tmp, sizeof(tmp));
890
  return ftmp;
891
}
892

893
inline kmp_real64 KMP_XCHG_REAL64(volatile kmp_real64 *p, kmp_real64 v) {
894
  volatile kmp_uint64 *up;
895
  kmp_uint64 uv;
896
  memcpy(&up, &p, sizeof(up));
897
  memcpy(&uv, &v, sizeof(uv));
898
  kmp_int64 tmp = __sync_lock_test_and_set(up, uv);
899
  kmp_real64 dtmp;
900
  memcpy(&dtmp, &tmp, sizeof(tmp));
901
  return dtmp;
902
}
903

904
#else
905

906
extern kmp_int8 __kmp_test_then_add8(volatile kmp_int8 *p, kmp_int8 v);
907
extern kmp_int8 __kmp_test_then_or8(volatile kmp_int8 *p, kmp_int8 v);
908
extern kmp_int8 __kmp_test_then_and8(volatile kmp_int8 *p, kmp_int8 v);
909
extern kmp_int32 __kmp_test_then_add32(volatile kmp_int32 *p, kmp_int32 v);
910
extern kmp_uint32 __kmp_test_then_or32(volatile kmp_uint32 *p, kmp_uint32 v);
911
extern kmp_uint32 __kmp_test_then_and32(volatile kmp_uint32 *p, kmp_uint32 v);
912
extern kmp_int64 __kmp_test_then_add64(volatile kmp_int64 *p, kmp_int64 v);
913
extern kmp_uint64 __kmp_test_then_or64(volatile kmp_uint64 *p, kmp_uint64 v);
914
extern kmp_uint64 __kmp_test_then_and64(volatile kmp_uint64 *p, kmp_uint64 v);
915

916
extern kmp_int8 __kmp_compare_and_store8(volatile kmp_int8 *p, kmp_int8 cv,
917
                                         kmp_int8 sv);
918
extern kmp_int16 __kmp_compare_and_store16(volatile kmp_int16 *p, kmp_int16 cv,
919
                                           kmp_int16 sv);
920
extern kmp_int32 __kmp_compare_and_store32(volatile kmp_int32 *p, kmp_int32 cv,
921
                                           kmp_int32 sv);
922
extern kmp_int32 __kmp_compare_and_store64(volatile kmp_int64 *p, kmp_int64 cv,
923
                                           kmp_int64 sv);
924
extern kmp_int8 __kmp_compare_and_store_ret8(volatile kmp_int8 *p, kmp_int8 cv,
925
                                             kmp_int8 sv);
926
extern kmp_int16 __kmp_compare_and_store_ret16(volatile kmp_int16 *p,
927
                                               kmp_int16 cv, kmp_int16 sv);
928
extern kmp_int32 __kmp_compare_and_store_ret32(volatile kmp_int32 *p,
929
                                               kmp_int32 cv, kmp_int32 sv);
930
extern kmp_int64 __kmp_compare_and_store_ret64(volatile kmp_int64 *p,
931
                                               kmp_int64 cv, kmp_int64 sv);
932

933
extern kmp_int8 __kmp_xchg_fixed8(volatile kmp_int8 *p, kmp_int8 v);
934
extern kmp_int16 __kmp_xchg_fixed16(volatile kmp_int16 *p, kmp_int16 v);
935
extern kmp_int32 __kmp_xchg_fixed32(volatile kmp_int32 *p, kmp_int32 v);
936
extern kmp_int64 __kmp_xchg_fixed64(volatile kmp_int64 *p, kmp_int64 v);
937
extern kmp_real32 __kmp_xchg_real32(volatile kmp_real32 *p, kmp_real32 v);
938
extern kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v);
939

940
#define KMP_TEST_THEN_INC32(p)                                                 \
941
  __kmp_test_then_add32((volatile kmp_int32 *)(p), 1)
942
#define KMP_TEST_THEN_INC_ACQ32(p)                                             \
943
  __kmp_test_then_add32((volatile kmp_int32 *)(p), 1)
944
#define KMP_TEST_THEN_INC64(p)                                                 \
945
  __kmp_test_then_add64((volatile kmp_int64 *)(p), 1LL)
946
#define KMP_TEST_THEN_INC_ACQ64(p)                                             \
947
  __kmp_test_then_add64((volatile kmp_int64 *)(p), 1LL)
948
#define KMP_TEST_THEN_ADD4_32(p)                                               \
949
  __kmp_test_then_add32((volatile kmp_int32 *)(p), 4)
950
#define KMP_TEST_THEN_ADD4_ACQ32(p)                                            \
951
  __kmp_test_then_add32((volatile kmp_int32 *)(p), 4)
952
#define KMP_TEST_THEN_ADD4_64(p)                                               \
953
  __kmp_test_then_add64((volatile kmp_int64 *)(p), 4LL)
954
#define KMP_TEST_THEN_ADD4_ACQ64(p)                                            \
955
  __kmp_test_then_add64((volatile kmp_int64 *)(p), 4LL)
956
#define KMP_TEST_THEN_DEC32(p)                                                 \
957
  __kmp_test_then_add32((volatile kmp_int32 *)(p), -1)
958
#define KMP_TEST_THEN_DEC_ACQ32(p)                                             \
959
  __kmp_test_then_add32((volatile kmp_int32 *)(p), -1)
960
#define KMP_TEST_THEN_DEC64(p)                                                 \
961
  __kmp_test_then_add64((volatile kmp_int64 *)(p), -1LL)
962
#define KMP_TEST_THEN_DEC_ACQ64(p)                                             \
963
  __kmp_test_then_add64((volatile kmp_int64 *)(p), -1LL)
964
#define KMP_TEST_THEN_ADD8(p, v)                                               \
965
  __kmp_test_then_add8((volatile kmp_int8 *)(p), (kmp_int8)(v))
966
#define KMP_TEST_THEN_ADD32(p, v)                                              \
967
  __kmp_test_then_add32((volatile kmp_int32 *)(p), (kmp_int32)(v))
968
#define KMP_TEST_THEN_ADD64(p, v)                                              \
969
  __kmp_test_then_add64((volatile kmp_int64 *)(p), (kmp_int64)(v))
970

971
#define KMP_TEST_THEN_OR8(p, v)                                                \
972
  __kmp_test_then_or8((volatile kmp_int8 *)(p), (kmp_int8)(v))
973
#define KMP_TEST_THEN_AND8(p, v)                                               \
974
  __kmp_test_then_and8((volatile kmp_int8 *)(p), (kmp_int8)(v))
975
#define KMP_TEST_THEN_OR32(p, v)                                               \
976
  __kmp_test_then_or32((volatile kmp_uint32 *)(p), (kmp_uint32)(v))
977
#define KMP_TEST_THEN_AND32(p, v)                                              \
978
  __kmp_test_then_and32((volatile kmp_uint32 *)(p), (kmp_uint32)(v))
979
#define KMP_TEST_THEN_OR64(p, v)                                               \
980
  __kmp_test_then_or64((volatile kmp_uint64 *)(p), (kmp_uint64)(v))
981
#define KMP_TEST_THEN_AND64(p, v)                                              \
982
  __kmp_test_then_and64((volatile kmp_uint64 *)(p), (kmp_uint64)(v))
983

984
#define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv)                                  \
985
  __kmp_compare_and_store8((volatile kmp_int8 *)(p), (kmp_int8)(cv),           \
986
                           (kmp_int8)(sv))
987
#define KMP_COMPARE_AND_STORE_REL8(p, cv, sv)                                  \
988
  __kmp_compare_and_store8((volatile kmp_int8 *)(p), (kmp_int8)(cv),           \
989
                           (kmp_int8)(sv))
990
#define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv)                                 \
991
  __kmp_compare_and_store16((volatile kmp_int16 *)(p), (kmp_int16)(cv),        \
992
                            (kmp_int16)(sv))
993
#define KMP_COMPARE_AND_STORE_REL16(p, cv, sv)                                 \
994
  __kmp_compare_and_store16((volatile kmp_int16 *)(p), (kmp_int16)(cv),        \
995
                            (kmp_int16)(sv))
996
#define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv)                                 \
997
  __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv),        \
998
                            (kmp_int32)(sv))
999
#define KMP_COMPARE_AND_STORE_REL32(p, cv, sv)                                 \
1000
  __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv),        \
1001
                            (kmp_int32)(sv))
1002
#define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv)                                 \
1003
  __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv),        \
1004
                            (kmp_int64)(sv))
1005
#define KMP_COMPARE_AND_STORE_REL64(p, cv, sv)                                 \
1006
  __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv),        \
1007
                            (kmp_int64)(sv))
1008

1009
#if KMP_ARCH_X86
1010
#define KMP_COMPARE_AND_STORE_PTR(p, cv, sv)                                   \
1011
  __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv),        \
1012
                            (kmp_int32)(sv))
1013
#else /* 64 bit pointers */
1014
#define KMP_COMPARE_AND_STORE_PTR(p, cv, sv)                                   \
1015
  __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv),        \
1016
                            (kmp_int64)(sv))
1017
#endif /* KMP_ARCH_X86 */
1018

1019
#define KMP_COMPARE_AND_STORE_RET8(p, cv, sv)                                  \
1020
  __kmp_compare_and_store_ret8((p), (cv), (sv))
1021
#define KMP_COMPARE_AND_STORE_RET16(p, cv, sv)                                 \
1022
  __kmp_compare_and_store_ret16((p), (cv), (sv))
1023
#define KMP_COMPARE_AND_STORE_RET32(p, cv, sv)                                 \
1024
  __kmp_compare_and_store_ret32((volatile kmp_int32 *)(p), (kmp_int32)(cv),    \
1025
                                (kmp_int32)(sv))
1026
#define KMP_COMPARE_AND_STORE_RET64(p, cv, sv)                                 \
1027
  __kmp_compare_and_store_ret64((volatile kmp_int64 *)(p), (kmp_int64)(cv),    \
1028
                                (kmp_int64)(sv))
1029

1030
#define KMP_XCHG_FIXED8(p, v)                                                  \
1031
  __kmp_xchg_fixed8((volatile kmp_int8 *)(p), (kmp_int8)(v));
1032
#define KMP_XCHG_FIXED16(p, v) __kmp_xchg_fixed16((p), (v));
1033
#define KMP_XCHG_FIXED32(p, v) __kmp_xchg_fixed32((p), (v));
1034
#define KMP_XCHG_FIXED64(p, v) __kmp_xchg_fixed64((p), (v));
1035
#define KMP_XCHG_REAL32(p, v) __kmp_xchg_real32((p), (v));
1036
#define KMP_XCHG_REAL64(p, v) __kmp_xchg_real64((p), (v));
1037

1038
#endif /* KMP_ASM_INTRINS */
1039

1040
/* ------------- relaxed consistency memory model stuff ------------------ */
1041

1042
#if KMP_OS_WINDOWS
1043
#ifdef __ABSOFT_WIN
1044
#define KMP_MB() asm("nop")
1045
#define KMP_IMB() asm("nop")
1046
#else
1047
#define KMP_MB() /* _asm{ nop } */
1048
#define KMP_IMB() /* _asm{ nop } */
1049
#endif
1050
#endif /* KMP_OS_WINDOWS */
1051

1052
#if KMP_ARCH_PPC64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64 || KMP_ARCH_MIPS ||     \
1053
    KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 ||             \
1054
    KMP_ARCH_VE || KMP_ARCH_S390X || KMP_ARCH_PPC || KMP_ARCH_AARCH64_32
1055
#if KMP_OS_WINDOWS
1056
#undef KMP_MB
1057
#define KMP_MB() std::atomic_thread_fence(std::memory_order_seq_cst)
1058
#else /* !KMP_OS_WINDOWS */
1059
#define KMP_MB() __sync_synchronize()
1060
#endif
1061
#endif
1062

1063
#ifndef KMP_MB
1064
#define KMP_MB() /* nothing to do */
1065
#endif
1066

1067
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
1068
#if KMP_MIC
1069
// fence-style instructions do not exist, but lock; xaddl $0,(%rsp) can be used.
1070
// We shouldn't need it, though, since the ABI rules require that
1071
// * If the compiler generates NGO stores it also generates the fence
1072
// * If users hand-code NGO stores they should insert the fence
1073
// therefore no incomplete unordered stores should be visible.
1074
#define KMP_MFENCE() /* Nothing */
1075
#define KMP_SFENCE() /* Nothing */
1076
#else
1077
#if KMP_COMPILER_ICC || KMP_COMPILER_ICX
1078
#define KMP_MFENCE_() _mm_mfence()
1079
#define KMP_SFENCE_() _mm_sfence()
1080
#elif KMP_COMPILER_MSVC
1081
#define KMP_MFENCE_() MemoryBarrier()
1082
#define KMP_SFENCE_() MemoryBarrier()
1083
#else
1084
#define KMP_MFENCE_() __sync_synchronize()
1085
#define KMP_SFENCE_() __sync_synchronize()
1086
#endif
1087
#define KMP_MFENCE()                                                           \
1088
  if (UNLIKELY(!__kmp_cpuinfo.initialized)) {                                  \
1089
    __kmp_query_cpuid(&__kmp_cpuinfo);                                         \
1090
  }                                                                            \
1091
  if (__kmp_cpuinfo.flags.sse2) {                                              \
1092
    KMP_MFENCE_();                                                             \
1093
  }
1094
#define KMP_SFENCE() KMP_SFENCE_()
1095
#endif
1096
#else
1097
#define KMP_MFENCE() KMP_MB()
1098
#define KMP_SFENCE() KMP_MB()
1099
#endif
1100

1101
#ifndef KMP_IMB
1102
#define KMP_IMB() /* nothing to do */
1103
#endif
1104

1105
#ifndef KMP_ST_REL32
1106
#define KMP_ST_REL32(A, D) (*(A) = (D))
1107
#endif
1108

1109
#ifndef KMP_ST_REL64
1110
#define KMP_ST_REL64(A, D) (*(A) = (D))
1111
#endif
1112

1113
#ifndef KMP_LD_ACQ32
1114
#define KMP_LD_ACQ32(A) (*(A))
1115
#endif
1116

1117
#ifndef KMP_LD_ACQ64
1118
#define KMP_LD_ACQ64(A) (*(A))
1119
#endif
1120

1121
/* ------------------------------------------------------------------------ */
1122
// FIXME - maybe this should this be
1123
//
1124
// #define TCR_4(a)    (*(volatile kmp_int32 *)(&a))
1125
// #define TCW_4(a,b)  (a) = (*(volatile kmp_int32 *)&(b))
1126
//
1127
// #define TCR_8(a)    (*(volatile kmp_int64 *)(a))
1128
// #define TCW_8(a,b)  (a) = (*(volatile kmp_int64 *)(&b))
1129
//
1130
// I'm fairly certain this is the correct thing to do, but I'm afraid
1131
// of performance regressions.
1132

1133
#define TCR_1(a) (a)
1134
#define TCW_1(a, b) (a) = (b)
1135
#define TCR_4(a) (a)
1136
#define TCW_4(a, b) (a) = (b)
1137
#define TCI_4(a) (++(a))
1138
#define TCD_4(a) (--(a))
1139
#define TCR_8(a) (a)
1140
#define TCW_8(a, b) (a) = (b)
1141
#define TCI_8(a) (++(a))
1142
#define TCD_8(a) (--(a))
1143
#define TCR_SYNC_4(a) (a)
1144
#define TCW_SYNC_4(a, b) (a) = (b)
1145
#define TCX_SYNC_4(a, b, c)                                                    \
1146
  KMP_COMPARE_AND_STORE_REL32((volatile kmp_int32 *)(volatile void *)&(a),     \
1147
                              (kmp_int32)(b), (kmp_int32)(c))
1148
#define TCR_SYNC_8(a) (a)
1149
#define TCW_SYNC_8(a, b) (a) = (b)
1150
#define TCX_SYNC_8(a, b, c)                                                    \
1151
  KMP_COMPARE_AND_STORE_REL64((volatile kmp_int64 *)(volatile void *)&(a),     \
1152
                              (kmp_int64)(b), (kmp_int64)(c))
1153

1154
#if KMP_ARCH_X86 || KMP_ARCH_MIPS || KMP_ARCH_WASM || KMP_ARCH_PPC
1155
// What about ARM?
1156
#define TCR_PTR(a) ((void *)TCR_4(a))
1157
#define TCW_PTR(a, b) TCW_4((a), (b))
1158
#define TCR_SYNC_PTR(a) ((void *)TCR_SYNC_4(a))
1159
#define TCW_SYNC_PTR(a, b) TCW_SYNC_4((a), (b))
1160
#define TCX_SYNC_PTR(a, b, c) ((void *)TCX_SYNC_4((a), (b), (c)))
1161

1162
#else /* 64 bit pointers */
1163

1164
#define TCR_PTR(a) ((void *)TCR_8(a))
1165
#define TCW_PTR(a, b) TCW_8((a), (b))
1166
#define TCR_SYNC_PTR(a) ((void *)TCR_SYNC_8(a))
1167
#define TCW_SYNC_PTR(a, b) TCW_SYNC_8((a), (b))
1168
#define TCX_SYNC_PTR(a, b, c) ((void *)TCX_SYNC_8((a), (b), (c)))
1169

1170
#endif /* KMP_ARCH_X86 */
1171

1172
/* If these FTN_{TRUE,FALSE} values change, may need to change several places
1173
   where they are used to check that language is Fortran, not C. */
1174

1175
#ifndef FTN_TRUE
1176
#define FTN_TRUE TRUE
1177
#endif
1178

1179
#ifndef FTN_FALSE
1180
#define FTN_FALSE FALSE
1181
#endif
1182

1183
typedef void (*microtask_t)(int *gtid, int *npr, ...);
1184

1185
#ifdef USE_VOLATILE_CAST
1186
#define VOLATILE_CAST(x) (volatile x)
1187
#else
1188
#define VOLATILE_CAST(x) (x)
1189
#endif
1190

1191
#define KMP_WAIT __kmp_wait_4
1192
#define KMP_WAIT_PTR __kmp_wait_4_ptr
1193
#define KMP_EQ __kmp_eq_4
1194
#define KMP_NEQ __kmp_neq_4
1195
#define KMP_LT __kmp_lt_4
1196
#define KMP_GE __kmp_ge_4
1197
#define KMP_LE __kmp_le_4
1198

1199
/* Workaround for Intel(R) 64 code gen bug when taking address of static array
1200
 * (Intel(R) 64 Tracker #138) */
1201
#if (KMP_ARCH_X86_64 || KMP_ARCH_PPC64) && KMP_OS_LINUX
1202
#define STATIC_EFI2_WORKAROUND
1203
#else
1204
#define STATIC_EFI2_WORKAROUND static
1205
#endif
1206

1207
// Support of BGET usage
1208
#ifndef KMP_USE_BGET
1209
#define KMP_USE_BGET 1
1210
#endif
1211

1212
// Switches for OSS builds
1213
#ifndef USE_CMPXCHG_FIX
1214
#define USE_CMPXCHG_FIX 1
1215
#endif
1216

1217
// Enable dynamic user lock
1218
#define KMP_USE_DYNAMIC_LOCK 1
1219

1220
// Enable Intel(R) Transactional Synchronization Extensions (Intel(R) TSX) if
1221
// dynamic user lock is turned on
1222
#if KMP_USE_DYNAMIC_LOCK
1223
// Visual studio can't handle the asm sections in this code
1224
#define KMP_USE_TSX (KMP_ARCH_X86 || KMP_ARCH_X86_64) && !KMP_COMPILER_MSVC
1225
#ifdef KMP_USE_ADAPTIVE_LOCKS
1226
#undef KMP_USE_ADAPTIVE_LOCKS
1227
#endif
1228
#define KMP_USE_ADAPTIVE_LOCKS KMP_USE_TSX
1229
#endif
1230

1231
// Enable tick time conversion of ticks to seconds
1232
#if KMP_STATS_ENABLED
1233
#define KMP_HAVE_TICK_TIME                                                     \
1234
  (KMP_OS_LINUX && (KMP_MIC || KMP_ARCH_X86 || KMP_ARCH_X86_64))
1235
#endif
1236

1237
// Warning levels
1238
enum kmp_warnings_level {
1239
  kmp_warnings_off = 0, /* No warnings */
1240
  kmp_warnings_low, /* Minimal warnings (default) */
1241
  kmp_warnings_explicit = 6, /* Explicitly set to ON - more warnings */
1242
  kmp_warnings_verbose /* reserved */
1243
};
1244

1245
#ifdef __cplusplus
1246
} // extern "C"
1247
#endif // __cplusplus
1248

1249
// Safe C API
1250
#include "kmp_safe_c_api.h"
1251

1252
// Macros for C++11 atomic functions
1253
#define KMP_ATOMIC_LD(p, order) (p)->load(std::memory_order_##order)
1254
#define KMP_ATOMIC_OP(op, p, v, order) (p)->op(v, std::memory_order_##order)
1255

1256
// For non-default load/store
1257
#define KMP_ATOMIC_LD_ACQ(p) KMP_ATOMIC_LD(p, acquire)
1258
#define KMP_ATOMIC_LD_RLX(p) KMP_ATOMIC_LD(p, relaxed)
1259
#define KMP_ATOMIC_ST_REL(p, v) KMP_ATOMIC_OP(store, p, v, release)
1260
#define KMP_ATOMIC_ST_RLX(p, v) KMP_ATOMIC_OP(store, p, v, relaxed)
1261

1262
// For non-default fetch_<op>
1263
#define KMP_ATOMIC_ADD(p, v) KMP_ATOMIC_OP(fetch_add, p, v, acq_rel)
1264
#define KMP_ATOMIC_SUB(p, v) KMP_ATOMIC_OP(fetch_sub, p, v, acq_rel)
1265
#define KMP_ATOMIC_AND(p, v) KMP_ATOMIC_OP(fetch_and, p, v, acq_rel)
1266
#define KMP_ATOMIC_OR(p, v) KMP_ATOMIC_OP(fetch_or, p, v, acq_rel)
1267
#define KMP_ATOMIC_INC(p) KMP_ATOMIC_OP(fetch_add, p, 1, acq_rel)
1268
#define KMP_ATOMIC_DEC(p) KMP_ATOMIC_OP(fetch_sub, p, 1, acq_rel)
1269
#define KMP_ATOMIC_ADD_RLX(p, v) KMP_ATOMIC_OP(fetch_add, p, v, relaxed)
1270
#define KMP_ATOMIC_INC_RLX(p) KMP_ATOMIC_OP(fetch_add, p, 1, relaxed)
1271

1272
// Callers of the following functions cannot see the side effect on "expected".
1273
template <typename T>
1274
bool __kmp_atomic_compare_store(std::atomic<T> *p, T expected, T desired) {
1275
  return p->compare_exchange_strong(
1276
      expected, desired, std::memory_order_acq_rel, std::memory_order_relaxed);
1277
}
1278

1279
template <typename T>
1280
bool __kmp_atomic_compare_store_acq(std::atomic<T> *p, T expected, T desired) {
1281
  return p->compare_exchange_strong(
1282
      expected, desired, std::memory_order_acquire, std::memory_order_relaxed);
1283
}
1284

1285
template <typename T>
1286
bool __kmp_atomic_compare_store_rel(std::atomic<T> *p, T expected, T desired) {
1287
  return p->compare_exchange_strong(
1288
      expected, desired, std::memory_order_release, std::memory_order_relaxed);
1289
}
1290

1291
// Symbol lookup on Linux/Windows
1292
#if KMP_OS_WINDOWS
1293
extern void *__kmp_lookup_symbol(const char *name, bool next = false);
1294
#define KMP_DLSYM(name) __kmp_lookup_symbol(name)
1295
#define KMP_DLSYM_NEXT(name) __kmp_lookup_symbol(name, true)
1296
#elif KMP_OS_WASI
1297
#define KMP_DLSYM(name) nullptr
1298
#define KMP_DLSYM_NEXT(name) nullptr
1299
#else
1300
#define KMP_DLSYM(name) dlsym(RTLD_DEFAULT, name)
1301
#define KMP_DLSYM_NEXT(name) dlsym(RTLD_NEXT, name)
1302
#endif
1303

1304
// MSVC doesn't have this, but clang/clang-cl does.
1305
#ifndef __has_builtin
1306
#define __has_builtin(x) 0
1307
#endif
1308

1309
// Same as LLVM_BUILTIN_UNREACHABLE. States that it is UB to reach this point.
1310
#if __has_builtin(__builtin_unreachable) || defined(__GNUC__)
1311
#define KMP_BUILTIN_UNREACHABLE __builtin_unreachable()
1312
#elif defined(_MSC_VER)
1313
#define KMP_BUILTIN_UNREACHABLE __assume(false)
1314
#else
1315
#define KMP_BUILTIN_UNREACHABLE
1316
#endif
1317

1318
#endif /* KMP_OS_H */
1319

1320
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