atomic_flag

From cppreference.com
C
Concurrency support library
Defined in header <stdatomic.h>
typedef struct /* unspecified */ atomic_flag ;
(since C11)

atomic_flag is an atomic boolean type. Unlike other atomic types, it is guaranteed to be lock-free. Unlike atomic_bool , atomic_flag does not provide load or store operations.

References

  • C23 standard (ISO/IEC 9899:2024):
  • 7.17.1/5 atomic_flag (p: 293)
  • 7.17.8 Atomic flag type and operations (p: 302-303)
  • C17 standard (ISO/IEC 9899:2018):
  • 7.17.1/4 atomic_flag (p: 200)
  • 7.17.8 Atomic flag type and operations (p: 208-209)
  • C11 standard (ISO/IEC 9899:2011):
  • 7.17.1/4 atomic_flag (p: 273)
  • 7.17.8 Atomic flag type and operations (p: 285-286)

See also

(C11)
initializes a new atomic_flag
(macro constant)
(C11)
sets an atomic_flag to true and returns the old value
(function)
(C11)
sets an atomic_flag to false
(function)
C++ documentation for atomic_flag
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