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authorSirshak Das <sirshak.das@arm.com>2018-10-03 22:53:51 +0000
committerDamjan Marion <dmarion@me.com>2018-10-19 07:10:47 +0000
commit2f6d7bb93c157b874efb79a2d1583a4c368bf89a (patch)
tree05dc2867c598cbb8d711f074b4b0eb62dd464f41 /src/vlib/threads.h
parentbf3443b0f852f5a4c551d12f926defbd047f2161 (diff)
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 <damarion@cisco.com> Signed-off-by: Sirshak Das <sirshak.das@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com> Reviewed-by: Steve Capper <steve.capper@arm.com>
Diffstat (limited to 'src/vlib/threads.h')
-rw-r--r--src/vlib/threads.h10
1 files changed, 5 insertions, 5 deletions
diff --git a/src/vlib/threads.h b/src/vlib/threads.h
index bb7c164c2e3..0e9cba52103 100644
--- a/src/vlib/threads.h
+++ b/src/vlib/threads.h
@@ -414,7 +414,7 @@ vlib_worker_thread_barrier_check (void)
ed->thread_index = thread_index;
}
- clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, 1);
+ clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, 1);
if (CLIB_DEBUG > 0)
{
vm = vlib_get_main ();
@@ -424,7 +424,7 @@ vlib_worker_thread_barrier_check (void)
;
if (CLIB_DEBUG > 0)
vm->parked_at_barrier = 0;
- clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, -1);
+ clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, -1);
if (PREDICT_FALSE (*vlib_worker_threads->node_reforks_required))
{
@@ -450,8 +450,8 @@ vlib_worker_thread_barrier_check (void)
}
vlib_worker_thread_node_refork ();
- clib_smp_atomic_add (vlib_worker_threads->node_reforks_required,
- -1);
+ clib_atomic_fetch_add (vlib_worker_threads->node_reforks_required,
+ -1);
while (*vlib_worker_threads->node_reforks_required)
;
}
@@ -519,7 +519,7 @@ vlib_get_frame_queue_elt (u32 frame_queue_index, u32 index)
fq = fqm->vlib_frame_queues[index];
ASSERT (fq);
- new_tail = __sync_add_and_fetch (&fq->tail, 1);
+ new_tail = clib_atomic_add_fetch (&fq->tail, 1);
/* Wait until a ring slot is available */
while (new_tail >= fq->head_hint + fq->nelts)