From 2f6d7bb93c157b874efb79a2d1583a4c368bf89a Mon Sep 17 00:00:00 2001 From: Sirshak Das Date: Wed, 3 Oct 2018 22:53:51 +0000 Subject: vppinfra: add atomic macros for __sync builtins This is first part of addition of atomic macros with only macros for __sync builtins. - Based on earlier patch by Damjan (https://gerrit.fd.io/r/#/c/10729/) Additionally - clib_atomic_release macro added and used in the absence of any memory barrier. - clib_atomic_bool_cmp_and_swap added Change-Id: Ie4e48c1e184a652018d1d0d87c4be80ddd180a3b Original-patch-by: Damjan Marion Signed-off-by: Sirshak Das Reviewed-by: Honnappa Nagarahalli Reviewed-by: Ola Liljedahl Reviewed-by: Steve Capper --- src/plugins/lb/lb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/plugins/lb/lb.c') diff --git a/src/plugins/lb/lb.c b/src/plugins/lb/lb.c index 1936c1983ee..76bbfa0ac81 100644 --- a/src/plugins/lb/lb.c +++ b/src/plugins/lb/lb.c @@ -27,8 +27,8 @@ lb_main_t lb_main; -#define lb_get_writer_lock() do {} while(__sync_lock_test_and_set (lb_main.writer_lock, 1)) -#define lb_put_writer_lock() lb_main.writer_lock[0] = 0 +#define lb_get_writer_lock() do {} while(clib_atomic_test_and_set (lb_main.writer_lock)) +#define lb_put_writer_lock() clib_atomic_release (lb_main.writer_lock) static void lb_as_stack (lb_as_t *as); -- cgit 1.2.3-korg