原子操作库

若编译器定义宏常量 __STDC_NO_ATOMICS__(C11) ，则不提供头文件 <stdatomic.h> 、关键词 _Atomic 以及所有列于此的名称。

类型

定义于头文件 <stdatomic.h>
memory_order (C11)	定义内存顺序制约 (枚举)
atomic_flag (C11)	免锁布尔标志 (结构体)

宏

定义于头文件 <stdatomic.h>
ATOMIC_BOOL_LOCK_FREEATOMIC_CHAR_LOCK_FREEATOMIC_CHAR16_T_LOCK_FREEATOMIC_CHAR32_T_LOCK_FREEATOMIC_WCHAR_T_LOCK_FREEATOMIC_SHORT_LOCK_FREEATOMIC_INT_LOCK_FREEATOMIC_LONG_LOCK_FREEATOMIC_LLONG_LOCK_FREEATOMIC_POINTER_LOCK_FREE (C11)	指示给定的原子类型为免锁 (宏常量)
ATOMIC_FLAG_INIT (C11)	初始化新的 atomic_flag (宏常量)
ATOMIC_VAR_INIT (C11)(C17 中弃用)	初始化新的原子对象 (宏函数)
kill_dependency (C11)	打破 memory_order_consume 的依赖链 (宏函数)

函数

定义于头文件 <stdatomic.h>
atomic_flag_test_and_setatomic_flag_test_and_set_explicit (C11)	设置 atomic_flag 为 true 并返回旧值 (函数)
atomic_flag_clearatomic_flag_clear_explicit (C11)	设置 atomic_flag 为 false (函数)
atomic_init (C11)	初始化既存的原子对象 (函数)
atomic_is_lock_free (C11)	指示原子对象是否免锁 (函数)
atomic_storeatomic_store_explicit (C11)	存储值到原子对象 (函数)
atomic_loadatomic_load_explicit (C11)	从原子对象读取值 (函数)
atomic_exchangeatomic_exchange_explicit (C11)	与原子对象的值交换值 (函数)
atomic_compare_exchange_strongatomic_compare_exchange_strong_explicitatomic_compare_exchange_weakatomic_compare_exchange_weak_explicit (C11)	若期待旧值则与原子对象交换值，否则读取旧值 (函数)
atomic_fetch_addatomic_fetch_add_explicit (C11)	原子加法 (函数)
atomic_fetch_subatomic_fetch_sub_explicit (C11)	原子减法 (函数)
atomic_fetch_oratomic_fetch_or_explicit (C11)	原子逐位或 (函数)
atomic_fetch_xoratomic_fetch_xor_explicit (C11)	原子逐位异或 (函数)
atomic_fetch_andatomic_fetch_and_explicit (C11)	原子逐位与 (函数)
atomic_thread_fence (C11)	通用的内存顺序依赖的栅栏同步原语 (函数)
atomic_signal_fence (C11)	线程与执行于同一线程的信号处理函数间的栅栏 (函数)

类型

标准库为核心语言原子类型提供便利 typedef 。

typedef 名	完整类型名
atomic_bool	_Atomic _Bool
atomic_char	_Atomic char
atomic_schar	_Atomic signed char
atomic_uchar	_Atomic unsigned char
atomic_short	_Atomic short
atomic_ushort	_Atomic unsigned short
atomic_int	_Atomic int
atomic_uint	_Atomic unsigned int
atomic_long	_Atomic long
atomic_ulong	_Atomic unsigned long
atomic_llong	_Atomic long long
atomic_ullong	_Atomic unsigned long long
atomic_char16_t	_Atomic char16_t
atomic_char32_t	_Atomic char32_t
atomic_wchar_t	_Atomic wchar_t
atomic_int_least8_t	_Atomic int_least8_t
atomic_uint_least8_t	_Atomic uint_least8_t
atomic_int_least16_t	_Atomic int_least16_t
atomic_uint_least16_t	_Atomic uint_least16_t
atomic_int_least32_t	_Atomic int_least32_t
atomic_uint_least32_t	_Atomic uint_least32_t
atomic_int_least64_t	_Atomic int_least64_t
atomic_uint_least64_t	_Atomic uint_least64_t
atomic_int_fast8_t	_Atomic int_fast8_t
atomic_uint_fast8_t	_Atomic uint_fast8_t
atomic_int_fast16_t	_Atomic int_fast16_t
atomic_uint_fast16_t	_Atomic uint_fast16_t
atomic_int_fast32_t	_Atomic int_fast32_t
atomic_uint_fast32_t	_Atomic uint_fast32_t
atomic_int_fast64_t	_Atomic int_fast64_t
atomic_uint_fast64_t	_Atomic uint_fast64_t
atomic_intptr_t	_Atomic intptr_t
atomic_uintptr_t	_Atomic uintptr_t
atomic_size_t	_Atomic size_t
atomic_ptrdiff_t	_Atomic ptrdiff_t
atomic_intmax_t	_Atomic intmax_t
atomic_uintmax_t	_Atomic uintmax_t

引用

参阅