ATOMIC_FLAG_INIT

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

Expands to an initializer that can be used to initialize atomic_flag type to the clear state. The value of an atomic_flag that is not initialized using this macro is indeterminate.

Example 

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

References

  • C17 standard (ISO/IEC 9899:2018):
  • 7.17.1/3 ATOMIC_FLAG_INIT (p: 200)
  • 7.17.8/4 ATOMIC_FLAG_INIT (p: 208)
  • 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) (removed in C23)
initializes a new atomic object
(function macro)
(C11)
lock-free atomic boolean flag
(struct)
C++ documentation for ATOMIC_FLAG_INIT
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