Willy Tarreau 185157201c CLEANUP: atomic: add a fetch-and-xxx variant for common operations ... The fetch_and_xxx variant is often missing for add/sub/and/or. In fact it was only provided for ADD under the name XADD which corresponds to the x86 instruction name. But for destructive operations like AND and OR it's missing even more as it's not possible to know the value before modifying it. This patch explicitly adds HA_ATOMIC_FETCH_{OR,AND,ADD,SUB} which cover these standard operations, and renames XADD to FETCH_ADD (there were only 6 call places). In the future, backport of fixes involving such operations could simply remap FETCH_ADD(x) to XADD(x), FETCH_SUB(x) to XADD(-x), and for the OR/AND if needed, these could possibly be done using BTS/BTR. It's worth noting that xchg could have been renamed to fetch_and_store() but xchg already has well understood semantics and it wasn't needed to go further.		2021-04-07 18:18:37 +02:00
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haproxy	CLEANUP: atomic: add a fetch-and-xxx variant for common operations	2021-04-07 18:18:37 +02:00
import	BUG/MINOR: xxhash: make sure armv6 uses memcpy()	2021-02-04 17:14:58 +01:00