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913e64e8e1
The C17 standard deprecated ATOMIC_VAR_INIT() macro (see [1]). Follow
the suite and remove the ATOMIC_VAR_INIT() usage in favor of simple
assignment of the value as this is what all supported stdatomic.h
implementations do anyway:
* MacOSX.plaform: #define ATOMIC_VAR_INIT(__v) {__v}
* Gcc stdatomic.h: #define ATOMIC_VAR_INIT(VALUE) (VALUE)
1. http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1138r0.pdf
(cherry picked from commit f251d69eba)
125 lines
4.8 KiB
C
125 lines
4.8 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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#pragma once
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#include <inttypes.h>
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#include <stdbool.h>
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#include <stddef.h>
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#if HAVE_UCHAR_H
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#include <uchar.h>
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#endif /* HAVE_UCHAR_H */
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/* GCC 4.7.0 introduced __atomic builtins, but not the __GNUC_ATOMICS define */
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#if !defined(__GNUC_ATOMICS) && __GNUC__ == 4 && __GNUC_MINOR__ >= 7
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#define __GNUC_ATOMICS
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#endif
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#if !defined(__GNUC_ATOMICS)
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#error "isc/stdatomic.h does not support your compiler"
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#endif /* if !defined(__GNUC_ATOMICS) */
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typedef enum memory_order {
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memory_order_relaxed = __ATOMIC_RELAXED,
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memory_order_consume = __ATOMIC_CONSUME,
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memory_order_acquire = __ATOMIC_ACQUIRE,
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memory_order_release = __ATOMIC_RELEASE,
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memory_order_acq_rel = __ATOMIC_ACQ_REL,
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memory_order_seq_cst = __ATOMIC_SEQ_CST
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} memory_order;
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#ifndef HAVE_UCHAR_H
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typedef uint_least16_t char16_t;
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typedef uint_least32_t char32_t;
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#endif /* HAVE_UCHAR_H */
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typedef bool atomic_bool;
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typedef char atomic_char;
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typedef signed char atomic_schar;
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typedef unsigned char atomic_uchar;
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typedef short atomic_short;
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typedef unsigned short atomic_ushort;
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typedef int atomic_int;
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typedef unsigned int atomic_uint;
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typedef long atomic_long;
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typedef unsigned long atomic_ulong;
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typedef long long atomic_llong;
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typedef unsigned long long atomic_ullong;
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typedef char16_t atomic_char16_t;
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typedef char32_t atomic_char32_t;
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typedef wchar_t atomic_wchar_t;
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typedef int_least8_t atomic_int_least8_t;
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typedef uint_least8_t atomic_uint_least8_t;
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typedef int_least16_t atomic_int_least16_t;
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typedef uint_least16_t atomic_uint_least16_t;
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typedef int_least32_t atomic_int_least32_t;
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typedef uint_least32_t atomic_uint_least32_t;
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typedef int_least64_t atomic_int_least64_t;
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typedef uint_least64_t atomic_uint_least64_t;
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typedef int_fast8_t atomic_int_fast8_t;
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typedef uint_fast8_t atomic_uint_fast8_t;
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typedef int_fast16_t atomic_int_fast16_t;
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typedef uint_fast16_t atomic_uint_fast16_t;
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typedef int_fast32_t atomic_int_fast32_t;
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typedef uint_fast32_t atomic_uint_fast32_t;
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typedef int_fast64_t atomic_int_fast64_t;
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typedef uint_fast64_t atomic_uint_fast64_t;
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typedef intptr_t atomic_intptr_t;
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typedef uintptr_t atomic_uintptr_t;
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typedef size_t atomic_size_t;
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typedef ptrdiff_t atomic_ptrdiff_t;
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typedef intmax_t atomic_intmax_t;
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typedef uintmax_t atomic_uintmax_t;
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#define atomic_init(obj, desired) (*obj = desired)
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#define atomic_load_explicit(obj, order) __atomic_load_n(obj, order)
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#define atomic_store_explicit(obj, desired, order) \
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__atomic_store_n(obj, desired, order)
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#define atomic_fetch_add_explicit(obj, arg, order) \
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__atomic_fetch_add(obj, arg, order)
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#define atomic_fetch_sub_explicit(obj, arg, order) \
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__atomic_fetch_sub(obj, arg, order)
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#define atomic_fetch_and_explicit(obj, arg, order) \
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__atomic_fetch_and(obj, arg, order)
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#define atomic_fetch_or_explicit(obj, arg, order) \
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__atomic_fetch_or(obj, arg, order)
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#define atomic_compare_exchange_strong_explicit(obj, expected, desired, succ, \
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fail) \
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__atomic_compare_exchange_n(obj, expected, desired, 0, succ, fail)
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#define atomic_compare_exchange_weak_explicit(obj, expected, desired, succ, \
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fail) \
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__atomic_compare_exchange_n(obj, expected, desired, 1, succ, fail)
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#define atomic_exchange_explicit(obj, desired, order) \
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__atomic_exchange_n(obj, desired, order)
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#define atomic_load(obj) atomic_load_explicit(obj, memory_order_seq_cst)
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#define atomic_store(obj, arg) \
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atomic_store_explicit(obj, arg, memory_order_seq_cst)
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#define atomic_fetch_add(obj, arg) \
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atomic_fetch_add_explicit(obj, arg, memory_order_seq_cst)
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#define atomic_fetch_sub(obj, arg) \
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atomic_fetch_sub_explicit(obj, arg, memory_order_seq_cst)
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#define atomic_fetch_and(obj, arg) \
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atomic_fetch_and_explicit(obj, arg, memory_order_seq_cst)
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#define atomic_fetch_or(obj, arg) \
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atomic_fetch_or_explicit(obj, arg, memory_order_seq_cst)
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#define atomic_compare_exchange_strong(obj, expected, desired) \
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atomic_compare_exchange_strong_explicit(obj, expected, desired, \
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memory_order_seq_cst, \
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memory_order_seq_cst)
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#define atomic_compare_exchange_weak(obj, expected, desired) \
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atomic_compare_exchange_weak_explicit(obj, expected, desired, \
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memory_order_seq_cst, \
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memory_order_seq_cst)
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#define atomic_exchange(obj, desired) \
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atomic_exchange_explicit(obj, desired, memory_order_seq_cst)
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