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/svm/ssvm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/svm/ssvm.h') diff --git a/src/svm/ssvm.h b/src/svm/ssvm.h index 8677f5680be..5b2bf0d202d 100644 --- a/src/svm/ssvm.h +++ b/src/svm/ssvm.h @@ -103,7 +103,7 @@ ssvm_lock (ssvm_shared_header_t * h, u32 my_pid, u32 tag) return; } - while (__sync_lock_test_and_set (&h->lock, 1)) + while (clib_atomic_test_and_set (&h->lock)) ; h->owner_pid = my_pid; @@ -114,7 +114,7 @@ ssvm_lock (ssvm_shared_header_t * h, u32 my_pid, u32 tag) always_inline void ssvm_lock_non_recursive (ssvm_shared_header_t * h, u32 tag) { - while (__sync_lock_test_and_set (&h->lock, 1)) + while (clib_atomic_test_and_set (&h->lock)) ; h->tag = tag; -- cgit 1.2.3-korg