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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/plugins/ioam/export-common
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/plugins/ioam/export-common')
-rw-r--r--src/plugins/ioam/export-common/ioam_export.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/plugins/ioam/export-common/ioam_export.h b/src/plugins/ioam/export-common/ioam_export.h
index 36d71d26716..6e640951802 100644
--- a/src/plugins/ioam/export-common/ioam_export.h
+++ b/src/plugins/ioam/export-common/ioam_export.h
@@ -436,11 +436,11 @@ ioam_export_process_common (ioam_export_main_t * em, vlib_main_t * vm,
*/
for (i = 0; i < vec_len (thread_index); i++)
{
- while (__sync_lock_test_and_set (em->lockp[thread_index[i]], 1))
+ while (clib_atomic_test_and_set (em->lockp[thread_index[i]]))
;
em->buffer_per_thread[thread_index[i]] =
vec_pop (vec_buffer_indices);
- *em->lockp[thread_index[i]] = 0;
+ clib_atomic_release (em->lockp[thread_index[i]]);
}
/* Send the buffers */
@@ -479,7 +479,7 @@ do { \
from = vlib_frame_vector_args (F); \
n_left_from = (F)->n_vectors; \
next_index = (N)->cached_next_index; \
- while (__sync_lock_test_and_set ((EM)->lockp[(VM)->thread_index], 1)); \
+ while (clib_atomic_test_and_set ((EM)->lockp[(VM)->thread_index])); \
my_buf = ioam_export_get_my_buffer (EM, (VM)->thread_index); \
my_buf->touched_at = vlib_time_now (VM); \
while (n_left_from > 0) \