/* This file is derived from clang's stdatomic.h */ /*===---- stdatomic.h - Standard header for atomic types and operations -----=== * * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. * See https://llvm.org/LICENSE.txt for license information. * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception * *===-----------------------------------------------------------------------=== */ #ifndef _STDATOMIC_H#define _STDATOMIC_H #include <stddef.h>#include <stdint.h>#include <stdbool.h> #define __ATOMIC_RELAXED 0#define __ATOMIC_CONSUME 1#define __ATOMIC_ACQUIRE 2#define __ATOMIC_RELEASE 3#define __ATOMIC_ACQ_REL 4#define __ATOMIC_SEQ_CST 5 /* Memory ordering */typedef enum {    memory_order_relaxed = __ATOMIC_RELAXED,    memory_order_consume = __ATOMIC_CONSUME,    memory_order_acquire = __ATOMIC_ACQUIRE,    memory_order_release = __ATOMIC_RELEASE,    memory_order_acq_rel = __ATOMIC_ACQ_REL,    memory_order_seq_cst = __ATOMIC_SEQ_CST,} memory_order; /* Atomic typedefs */typedef _Atomic(_Bool) atomic_bool;typedef _Atomic(char) atomic_char;typedef _Atomic(signed char) atomic_schar;typedef _Atomic(unsigned char) atomic_uchar;typedef _Atomic(short) atomic_short;typedef _Atomic(unsigned short) atomic_ushort;typedef _Atomic(int) atomic_int;typedef _Atomic(unsigned int) atomic_uint;typedef _Atomic(long) atomic_long;typedef _Atomic(unsigned long) atomic_ulong;typedef _Atomic(long long) atomic_llong;typedef _Atomic(unsigned long long) atomic_ullong;typedef _Atomic(uint_least16_t) atomic_char16_t;typedef _Atomic(uint_least32_t) atomic_char32_t;typedef _Atomic(wchar_t) atomic_wchar_t;typedef _Atomic(int_least8_t) atomic_int_least8_t;typedef _Atomic(uint_least8_t) atomic_uint_least8_t;typedef _Atomic(int_least16_t) atomic_int_least16_t;typedef _Atomic(uint_least16_t) atomic_uint_least16_t;typedef _Atomic(int_least32_t) atomic_int_least32_t;typedef _Atomic(uint_least32_t) atomic_uint_least32_t;typedef _Atomic(int_least64_t) atomic_int_least64_t;typedef _Atomic(uint_least64_t) atomic_uint_least64_t;typedef _Atomic(int_fast8_t) atomic_int_fast8_t;typedef _Atomic(uint_fast8_t) atomic_uint_fast8_t;typedef _Atomic(int_fast16_t) atomic_int_fast16_t;typedef _Atomic(uint_fast16_t) atomic_uint_fast16_t;typedef _Atomic(int_fast32_t) atomic_int_fast32_t;typedef _Atomic(uint_fast32_t) atomic_uint_fast32_t;typedef _Atomic(int_fast64_t) atomic_int_fast64_t;typedef _Atomic(uint_fast64_t) atomic_uint_fast64_t;typedef _Atomic(intptr_t) atomic_intptr_t;typedef _Atomic(uintptr_t) atomic_uintptr_t;typedef _Atomic(size_t) atomic_size_t;typedef _Atomic(ptrdiff_t) atomic_ptrdiff_t;typedef _Atomic(intmax_t) atomic_intmax_t;typedef _Atomic(uintmax_t) atomic_uintmax_t; /* Atomic flag */typedef struct {    atomic_bool value;} atomic_flag; #define ATOMIC_FLAG_INIT {0}#define ATOMIC_VAR_INIT(value) (value) /* Generic routines */#define atomic_init(object, desired)                                      \    atomic_store_explicit(object, desired, __ATOMIC_RELAXED) #define __atomic_store_n(ptr, val, order)                                 \    (*(ptr) = (val), __atomic_store((ptr), &(typeof(*(ptr))){val}, (order)))#define atomic_store_explicit(object, desired, order)                     \    ({ __typeof__ (object) ptr = (object);                                \       __typeof__ (*ptr) tmp = (desired);                                 \       __atomic_store (ptr, &tmp, (order));                               \    })#define atomic_store(object, desired)                                     \     atomic_store_explicit (object, desired, __ATOMIC_SEQ_CST) #define __atomic_load_n(ptr, order)                                       \    ({ typeof(*(ptr)) __val;                                              \       __atomic_load((ptr), &__val, (order));                             \       __val; })#define atomic_load_explicit(object, order)                               \    ({ __typeof__ (object) ptr = (object);                                \       __typeof__ ((void)0,*ptr) tmp;                                             \       __atomic_load (ptr, &tmp, (order));                                \       tmp;                                                               \    })#define atomic_load(object) atomic_load_explicit (object, __ATOMIC_SEQ_CST) #define atomic_exchange_explicit(object, desired, order)                  \    ({ __typeof__ (object) ptr = (object);                                \       __typeof__ (*ptr) val = (desired);                                 \       __typeof__ (*ptr) tmp;                                             \       __atomic_exchange (ptr, &val, &tmp, (order));                      \       tmp;                                                               \    })#define atomic_exchange(object, desired)                                  \  atomic_exchange_explicit (object, desired, __ATOMIC_SEQ_CST)#define __atomic_compare_exchange_n(ptr, expected, desired, weak, success, failure) \    ({ typeof(*(ptr)) __desired = (desired);                              \       __atomic_compare_exchange((ptr), (expected), &__desired,          \         (weak), (success), (failure)); })#define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \    ({ __typeof__ (object) ptr = (object);                                \       __typeof__ (*ptr) tmp = desired;                                   \       __atomic_compare_exchange(ptr, expected, &tmp, 0, success, failure); \    })#define atomic_compare_exchange_strong(object, expected, desired)         \    atomic_compare_exchange_strong_explicit (object, expected, desired,   \                                             __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)#define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \    ({ __typeof__ (object) ptr = (object);                                \       __typeof__ (*ptr) tmp = desired;                                   \       __atomic_compare_exchange(ptr, expected, &tmp, 1, success, failure); \    })#define atomic_compare_exchange_weak(object, expected, desired)           \    atomic_compare_exchange_weak_explicit (object, expected, desired,     \                                           __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) #define atomic_fetch_add(object, operand) \    __atomic_fetch_add(object, operand, __ATOMIC_SEQ_CST)#define atomic_fetch_add_explicit __atomic_fetch_add #define atomic_fetch_sub(object, operand) \    __atomic_fetch_sub(object, operand, __ATOMIC_SEQ_CST)#define atomic_fetch_sub_explicit __atomic_fetch_sub #define atomic_fetch_or(object, operand) \    __atomic_fetch_or(object, operand, __ATOMIC_SEQ_CST)#define atomic_fetch_or_explicit __atomic_fetch_or #define atomic_fetch_xor(object, operand) \    __atomic_fetch_xor(object, operand, __ATOMIC_SEQ_CST)#define atomic_fetch_xor_explicit __atomic_fetch_xor #define atomic_fetch_and(object, operand) \    __atomic_fetch_and(object, operand, __ATOMIC_SEQ_CST)#define atomic_fetch_and_explicit __atomic_fetch_and extern void atomic_thread_fence (memory_order);#define __atomic_thread_fence(order) atomic_thread_fence (order)extern void atomic_signal_fence (memory_order);#define __atomic_signal_fence(order) atomic_signal_fence(order)#define atomic_signal_fence(order) __atomic_signal_fence  (order)extern bool __atomic_is_lock_free(size_t size, void *ptr);#define atomic_is_lock_free(OBJ) __atomic_is_lock_free (sizeof (*(OBJ)), (OBJ)) extern bool atomic_flag_test_and_set(void *object);extern bool atomic_flag_test_and_set_explicit(void *object, memory_order order);extern void atomic_flag_clear(void *object);extern void atomic_flag_clear_explicit(void *object, memory_order order);#endif /* _STDATOMIC_H */