The ATOMIC_VAR_INIT macro is defined as:
#define ATOMIC_VAR_INIT(C value)
|
The ATOMIC_VAR_INIT macro expands to a token sequence suitable for initializing an atomic
object of a type that is initialization-compatible with value. An atomic object with automatic
storage duration that is not explicitly initialized using ATOMIC_VAR_INIT is initially in an
indeterminate state; however, the default (zero) initialization for objects with static storage
duration is guaranteed to produce a valid state.
This macro can only be used to initialize atomic objects that are declared in program scope in the global address space.
Concurrent access to the variable being initialized, even via an atomic operation, constitutes a data-race.
Examples
| global atomic_int guide = ATOMIC_VAR_INIT(42); |
Concurrent access to the variable being initialized, even via an atomic operation, constitutes a data-race.
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