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8739cbb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | /* 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)
#define atomic_flag_test_and_set_explicit(object, order) \
__atomic_test_and_set((void *)(&((object)->value)), order)
#define atomic_flag_test_and_set(object) \
atomic_flag_test_and_set_explicit(object, __ATOMIC_SEQ_CST)
#define atomic_flag_clear_explicit(object, order) \
__atomic_clear((bool *)(&((object)->value)), order)
#define atomic_flag_clear(object) \
atomic_flag_clear_explicit(object, __ATOMIC_SEQ_CST)
/* Generic routines */
#define atomic_init(object, desired) \
atomic_store_explicit(object, desired, __ATOMIC_RELAXED)
#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_explicit(object, order) \
({ __typeof__ (object) ptr = (object); \
__typeof__ (*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_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);
extern void __atomic_thread_fence (memory_order);
#define atomic_thread_fence(order) __atomic_thread_fence (order)
extern void atomic_signal_fence (memory_order);
extern void __atomic_signal_fence (memory_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_test_and_set (void *, memory_order);
extern void __atomic_clear (bool *, memory_order);
#endif /* _STDATOMIC_H */
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