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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/buffer_funcs.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/buffer_funcs.h')
-rw-r--r--src/vlib/buffer_funcs.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/vlib/buffer_funcs.h b/src/vlib/buffer_funcs.h
index d8abdf31d79..438bf7e5ee4 100644
--- a/src/vlib/buffer_funcs.h
+++ b/src/vlib/buffer_funcs.h
@@ -923,7 +923,7 @@ vlib_buffer_attach_clone (vlib_main_t * vm, vlib_buffer_t * head,
tail->total_length_not_including_first_buffer;
next_segment:
- __sync_add_and_fetch (&tail->n_add_refs, 1);
+ clib_atomic_add_fetch (&tail->n_add_refs, 1);
if (tail->flags & VLIB_BUFFER_NEXT_PRESENT)
{
@@ -1153,7 +1153,7 @@ vlib_validate_buffer_in_use (vlib_buffer_t * b, u32 expected)
oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
- while (__sync_lock_test_and_set (vlib_buffer_state_validation_lock, 1))
+ while (clib_atomic_test_and_set (vlib_buffer_state_validation_lock))
;
p = hash_get (vlib_buffer_state_validation_hash, b);
@@ -1196,7 +1196,7 @@ vlib_validate_buffer_set_in_use (vlib_buffer_t * b, u32 expected)
oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
- while (__sync_lock_test_and_set (vlib_buffer_state_validation_lock, 1))
+ while (clib_atomic_test_and_set (vlib_buffer_state_validation_lock))
;
hash_set (vlib_buffer_state_validation_hash, b, expected);