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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/vnet/util/refcount.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/vnet/util/refcount.h')
-rw-r--r--src/vnet/util/refcount.h4
1 files changed, 2 insertions, 2 deletions
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);