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/vnet/util/refcount.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/vnet/util') diff --git a/src/vnet/util/refcount.h b/src/vnet/util/refcount.h index ea92148dafa..873ab6def69 100644 --- a/src/vnet/util/refcount.h +++ b/src/vnet/util/refcount.h @@ -52,14 +52,14 @@ typedef struct { static_always_inline void vlib_refcount_lock (volatile u32 *counter_lock) { - while (__sync_lock_test_and_set (counter_lock, 1)) + while (clib_atomic_test_and_set (counter_lock)) ; } static_always_inline void vlib_refcount_unlock (volatile u32 *counter_lock) { - *counter_lock = 0; + clib_atomic_release(counter_lock); } void __vlib_refcount_resize(vlib_refcount_per_cpu_t *per_cpu, u32 size); -- cgit 1.2.3-korg