tree e77f092b23ea9c3c43de292a366aefe382cc3f8d
parent 7af8e1da1abf31612cb8df448853ba9ee38d3113
author Willy Tarreau <w@1wt.eu> 1643728980 +0100
committer Willy Tarreau <w@1wt.eu> 1645019487 +0100
encoding latin1

MINOR: listener: replace the listener's spinlock with an rwlock

We'll need to lock the listener a little bit more during accept() and
tests show that a spinlock is a massive performance killer, so let's
first switch to an rwlock for this lock.

This patch might have to be backported for the next patch to work, and
if so, the change is almost mechanical (look for LISTENER_LOCK), but do
not forget about the few HA_SPIN_INIT() in the file. There's no reference
to this lock outside of listener.c nor listener-t.h.

(cherry picked from commit 08b6f9645248405bb1cdec59c6aa4f35a8ba3add)
[wt: minor ctx adjustment]
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 44fdf4c775f98c1c9b2b0e7a261905339586a1e1)
[wt: no clone_listener() in 2.4]
Signed-off-by: Willy Tarreau <w@1wt.eu>