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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/map/map.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/plugins/map/map.h')
-rw-r--r--src/plugins/map/map.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/plugins/map/map.h b/src/plugins/map/map.h
index 6587a8a455b..1e07b59f762 100644
--- a/src/plugins/map/map.h
+++ b/src/plugins/map/map.h
@@ -474,7 +474,7 @@ map_ip4_reass_get(u32 src, u32 dst, u16 fragment_id,
void
map_ip4_reass_free(map_ip4_reass_t *r, u32 **pi_to_drop);
-#define map_ip4_reass_lock() while (__sync_lock_test_and_set(map_main.ip4_reass_lock, 1)) {}
+#define map_ip4_reass_lock() while (clib_atomic_test_and_set (map_main.ip4_reass_lock)) {}
#define map_ip4_reass_unlock() do {CLIB_MEMORY_BARRIER(); *map_main.ip4_reass_lock = 0;} while(0)
static_always_inline void
@@ -499,7 +499,7 @@ map_ip6_reass_get(ip6_address_t *src, ip6_address_t *dst, u32 fragment_id,
void
map_ip6_reass_free(map_ip6_reass_t *r, u32 **pi_to_drop);
-#define map_ip6_reass_lock() while (__sync_lock_test_and_set(map_main.ip6_reass_lock, 1)) {}
+#define map_ip6_reass_lock() while (clib_atomic_test_and_set (map_main.ip6_reass_lock)) {}
#define map_ip6_reass_unlock() do {CLIB_MEMORY_BARRIER(); *map_main.ip6_reass_lock = 0;} while(0)
int
@@ -555,14 +555,14 @@ static inline void
map_domain_counter_lock (map_main_t *mm)
{
if (mm->counter_lock)
- while (__sync_lock_test_and_set(mm->counter_lock, 1))
+ while (clib_atomic_test_and_set (mm->counter_lock))
/* zzzz */ ;
}
static inline void
map_domain_counter_unlock (map_main_t *mm)
{
if (mm->counter_lock)
- *mm->counter_lock = 0;
+ clib_atomic_release (mm->counter_lock);
}