ATOMIC_*_LOCK_FREE
From cppreference.com
Defined in header
<stdatomic.h>
|
||
#define ATOMIC_BOOL_LOCK_FREE /* implementation-defined */
#define ATOMIC_CHAR_LOCK_FREE /* implementation-defined */ |
(since C11) | |
Expands to preprocessor constant expressions that evaluate to either 0
, 1
, or 2
which indicate the lock-free property of the corresponding atomic types (both signed and unsigned).
Value | Explanation |
0
|
The atomic type is never lock-free |
1
|
The atomic type is sometimes lock-free |
2
|
The atomic type is always lock-free |
[edit] References
- C11 standard (ISO/IEC 9899:2011):
-
- 7.17.1/3 atomic lock-free macros (p: 273)