tree 4aa7ba7cdb13239fd1845e757b8f5d24c19b7b5a
parent 714f34580ed31a2fd0604b2bfe2694d15aa04caf
author Willy Tarreau <w@1wt.eu> 1620548774 +0200
committer Willy Tarreau <w@1wt.eu> 1620548774 +0200
encoding latin1

MINOR: tools/rnd: compute the result outside of the CAS loop

ha_random64() uses a DWCAS loop to produce the random, but it computes
the resulting value inside the loop while it doesn't change upon success,
so this is a needless overhead inside the critcal path that participates
to making threads fail the race and try again. Let's take the value out
of the loop.