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memory_order Enum

Supplies symbolic names for synchronization operations on memory locations. These operations affect how assignments in one thread become visible in another.

typedef enum memory_order {
   memory_order_relaxed,
   memory_order_consume,
   memory_order_acquire,
   memory_order_release,
   memory_order_acq_rel,
   memory_order_seq_cst,
} memory_order;

memory_order_relaxed

No ordering required.

memory_order_consume

A load operation acts as a consume operation on the memory location.

memory_order_acquire

A load operation acts as an acquire operation on the memory location.

memory_order_release

A store operation acts as a release operation on the memory location.

memory_order_acq_rel

Combines memory_order_acquire and memory_order_release.

memory_order_seq_cst

Combines memory_order_acquire and memory_order_release. Memory accesses that are marked as memory_order_seq_cst must be sequentially consistent.

Header: atomic

Namespace: std

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