I have found <code>lock inc addr</code> but that doesn't keep a copy of the stored value around and even a read immediately after it in the same thread could come after a competing write. The best solution I have found is a <code>load</code>/<code>inc</code>/<code>cas</code> loop.

<code>lock xadd</code> is your friend.

Does x86 have an atomic increment that keeps the value that was stored?

lock xadd is your friend.

answered May 14 '23 19:05

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