std::runtime::atomic

std::runtime::atomic is the stdlib runtime interface used by std::atomic.

This module is implementation-facing. User code should import std::atomic instead.

Surface#

The module exports low-level functions for one atomic storage width:

• u64_load(ptr, order) -> u64
• u64_store(ptr, value, order) -> void
• u64_swap(ptr, value, order) -> u64
• u64_fetch_add(ptr, value, order) -> u64
• u64_fetch_sub(ptr, value, order) -> u64
• u64_compare_exchange(ptr, expected, desired, success, failure) -> bool
• fence(order) -> void

ptr is a raw pointer represented as u64. order, success, and failure use the numeric encoding documented by std::atomic::Ordering.

The shipped implementation delegates to std::runtime::posix::atomic.