diff options
| author |   Sirshak Das <sirshak.das@arm.com> | 2018-10-03 22:53:51 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2018-10-19 07:10:47 +0000 |
| commit | 2f6d7bb93c157b874efb79a2d1583a4c368bf89a (patch) | |
| tree | 05dc2867c598cbb8d711f074b4b0eb62dd464f41 /src/svm/svm_fifo.c | |
| parent | bf3443b0f852f5a4c551d12f926defbd047f2161 (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/svm/svm_fifo.c')
| -rw-r--r-- | src/svm/svm_fifo.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/svm/svm_fifo.c b/src/svm/svm_fifo.c index 4eae0a1c7e6..aa523c6b55c 100644 --- a/src/svm/svm_fifo.c +++ b/src/svm/svm_fifo.c @@ -513,7 +513,7 @@ CLIB_MARCH_FN (svm_fifo_enqueue_nowait, int, svm_fifo_t * f, u32 max_bytes, /* Atomically increase the queue length */ ASSERT (cursize + total_copy_bytes <= nitems); - __sync_fetch_and_add (&f->cursize, total_copy_bytes); + clib_atomic_fetch_add (&f->cursize, total_copy_bytes); return (total_copy_bytes); } @@ -659,7 +659,7 @@ CLIB_MARCH_FN (svm_fifo_dequeue_nowait, int, svm_fifo_t * f, u32 max_bytes, ASSERT (f->head <= nitems); ASSERT (cursize >= total_copy_bytes); - __sync_fetch_and_sub (&f->cursize, total_copy_bytes); + clib_atomic_fetch_sub (&f->cursize, total_copy_bytes); return (total_copy_bytes); } @@ -757,7 +757,7 @@ svm_fifo_dequeue_drop (svm_fifo_t * f, u32 max_bytes) ASSERT (f->head <= nitems); ASSERT (cursize >= total_drop_bytes); - __sync_fetch_and_sub (&f->cursize, total_drop_bytes); + clib_atomic_fetch_sub (&f->cursize, total_drop_bytes); return total_drop_bytes; } @@ -766,7 +766,7 @@ void svm_fifo_dequeue_drop_all (svm_fifo_t * f) { f->head = f->tail; - __sync_fetch_and_sub (&f->cursize, f->cursize); + clib_atomic_fetch_sub (&f->cursize, f->cursize); } int @@ -813,7 +813,7 @@ svm_fifo_segments_free (svm_fifo_t * f, svm_fifo_segment_t * fs) f->head = (f->head + fs[0].len) % f->nitems; total_drop_bytes = fs[0].len; } - __sync_fetch_and_sub (&f->cursize, total_drop_bytes); + clib_atomic_fetch_sub (&f->cursize, total_drop_bytes); } u32 |