This header provides atomic operations, in particular, it's a part of the concurrency support library.
[edit] Atomic operations Convenience type aliases Typedef name Full type nameatomic_bool (C11) _Atomic _Bool atomic_char (C11) _Atomic char atomic_schar (C11) _Atomic signed char atomic_uchar (C11) _Atomic unsigned char atomic_short (C11) _Atomic short atomic_ushort (C11) _Atomic unsigned short atomic_int (C11) _Atomic int atomic_uint (C11) _Atomic unsigned int atomic_long (C11) _Atomic long atomic_ulong (C11) _Atomic unsigned long atomic_llong (C11) _Atomic long long atomic_ullong (C11) _Atomic unsigned long long atomic_char8_t (C23) _Atomic char8_t atomic_char16_t (C11) _Atomic char16_t atomic_char32_t (C11) _Atomic char32_t atomic_wchar_t (C11) _Atomic wchar_t atomic_int_least8_t (C11) _Atomic int_least8_t atomic_uint_least8_t (C11) _Atomic uint_least8_t atomic_int_least16_t (C11) _Atomic int_least16_t atomic_uint_least16_t (C11) _Atomic uint_least16_t atomic_int_least32_t (C11) _Atomic int_least32_t atomic_uint_least32_t (C11) _Atomic uint_least32_t atomic_int_least64_t (C11) _Atomic int_least64_t atomic_uint_least64_t (C11) _Atomic uint_least64_t atomic_int_fast8_t (C11) _Atomic int_fast8_t atomic_uint_fast8_t (C11) _Atomic uint_fast8_t atomic_int_fast16_t (C11) _Atomic int_fast16_t atomic_uint_fast16_t (C11) _Atomic uint_fast16_t atomic_int_fast32_t (C11) _Atomic int_fast32_t atomic_uint_fast32_t (C11) _Atomic uint_fast32_t atomic_int_fast64_t (C11) _Atomic int_fast64_t atomic_uint_fast64_t (C11) _Atomic uint_fast64_t atomic_intptr_t (C11) _Atomic intptr_t atomic_uintptr_t (C11) _Atomic uintptr_t atomic_size_t (C11) _Atomic size_t atomic_ptrdiff_t (C11) _Atomic ptrdiff_t atomic_intmax_t (C11) _Atomic intmax_t atomic_uintmax_t (C11) _Atomic uintmax_t [edit] Synopsis
#define __STDC_VERSION_STDATOMIC_H__ 202311L
void atomic_init(volatile A* obj, /*C*/ value);
/*type*/ kill_dependency(/*type*/ y);
void atomic_thread_fence(memory_order order);
void atomic_signal_fence(memory_order order);
bool atomic_is_lock_free(const volatile A* obj);
void atomic_store(volatile A* object, /*C*/ desired);
void atomic_store_explicit(volatile A* object, /*C*/ desired, memory_order order);
/*C*/ atomic_load(const volatile A* object);
/*C*/ atomic_load_explicit(const volatile A* object, memory_order order);
/*C*/ atomic_exchange(volatile A* object, /*C*/ desired);
/*C*/ atomic_exchange_explicit(volatile A* object, /*C*/ desired, memory_order order);
bool atomic_compare_exchange_strong(volatile A* object, /*C*/* expected, /*C*/ desired);
bool atomic_compare_exchange_strong_explicit(volatile A* object, /*C*/* expected,
/*C*/ desired, memory_order success, memory_order failure);
bool atomic_compare_exchange_weak(volatile A* object, /*C*/* expected, /*C*/ desired);
bool atomic_compare_exchange_weak_explicit(volatile A* object, /*C*/* expected,
/*C*/ desired, memory_order success, memory_order failure);
/*C*/ /*atomic_fetch_key*/(volatile A* object, M operand);
/*C*/ /*atomic_fetch_key_explicit*/(volatile A* object, M operand, memory_order order);
bool atomic_flag_test_and_set(volatile atomic_flag* object);
bool atomic_flag_test_and_set_explicit(volatile atomic_flag* object,
memory_order order);
void atomic_flag_clear(volatile atomic_flag* object);
void atomic_flag_clear_explicit(volatile atomic_flag* object,
memory_order order);
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