If the macro constant __STDC_NO_ATOMICS__(C11) is defined by the compiler, the header <stdatomic.h>, the keyword _Atomic, and all of the names listed here are not provided.
Defined in header <stdatomic.h> |
|
|---|---|
|
(C11) | defines memory ordering constraints (enum) |
|
(C11) | lock-free atomic boolean flag (struct) |
Defined in header <stdatomic.h> |
|
|---|---|
|
(C11) | indicates that the given atomic type is lock-free (macro constant) |
|
(C11) | initializes a new atomic_flag (macro constant) |
|
(C11)(deprecated in C17)(removed in C23) | initializes a new atomic object (function macro) |
|
(C11) | breaks a dependency chain for memory_order_consume (function macro) |
Defined in header <stdatomic.h> |
|
|---|---|
|
(C11) | sets an atomic_flag to true and returns the old value (function) |
|
(C11) | sets an atomic_flag to false (function) |
|
(C11) | initializes an existing atomic object (function) |
|
(C11) | indicates whether the atomic object is lock-free (function) |
|
(C11) | stores a value in an atomic object (function) |
|
(C11) | reads a value from an atomic object (function) |
|
(C11) | swaps a value with the value of an atomic object (function) |
|
(C11) | swaps a value with an atomic object if the old value is what is expected, otherwise reads the old value (function) |
|
(C11) | atomic addition (function) |
|
(C11) | atomic subtraction (function) |
|
(C11) | atomic bitwise OR (function) |
|
(C11) | atomic bitwise exclusive OR (function) |
|
(C11) | atomic bitwise AND (function) |
|
(C11) | generic memory order-dependent fence synchronization primitive (function) |
|
(C11) | fence between a thread and a signal handler executed in the same thread (function) |
The standard library offers convenience typedefs for the core language atomic types.
| Typedef name | Full type name |
|---|---|
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_char8_t (C23) | _Atomic char8_t |
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 |
| C++ documentation for Atomic operations library |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/c/atomic