ATOMIC_FLAG_INIT

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ATOMIC_FLAG_INIT

Defined in header <stdatomic.h>
#define ATOMIC_FLAG_INIT /* unspecified */
(since C11)

Expands to an expression that can be used to initialize atomic_flag type. The value atomic_flag that is not initialized using this macro is undefined.

Example

#include <stdatomic.h>
 
atomic_flag flag = ATOMIC_FLAG_INIT;

References

C11 standard (ISO/IEC 9899:2011):

  • 7.17.1/3 ATOMIC_FLAG_INIT (p: 273)
  • 7.17.8/4 ATOMIC_FLAG_INIT (p: 285)

See also

(C11)(deprecated in C17)

initializes a new atomic object

(function macro)

(C11)

lock-free atomic boolean flag

(struct)

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