diff options
| author | Petri Savolainen <petri.savolainen@nokia.com> | 2016-01-20 11:19:26 +0200 |
|---|---|---|
| committer | Maxim Uvarov <maxim.uvarov@linaro.org> | 2016-02-08 20:45:24 +0300 |
| commit | 775fae801febf91816c9c0df6da6d6a4839b2d7b (patch) | |
| tree | 77dddca3e8bc6776f1110a1dd60457d758167124 /platform | |
| parent | 5a2e87a417951ce3842197b6db116ebbd14ff55d (diff) | |
linux-generic: atomic: implemented exchange
Implemented 32 and 64 bit atomic exchange operations.
Signed-off-by: Petri Savolainen <petri.savolainen@nokia.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Diffstat (limited to 'platform')
| -rw-r--r-- | platform/linux-generic/include/odp/atomic.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/platform/linux-generic/include/odp/atomic.h b/platform/linux-generic/include/odp/atomic.h index e86754467..4756fcb60 100644 --- a/platform/linux-generic/include/odp/atomic.h +++ b/platform/linux-generic/include/odp/atomic.h @@ -93,6 +93,12 @@ static inline int odp_atomic_cas_u32(odp_atomic_u32_t *atom, uint32_t *old_val, __ATOMIC_RELAXED); } +static inline uint32_t odp_atomic_xchg_u32(odp_atomic_u32_t *atom, + uint32_t new_val) +{ + return __atomic_exchange_n(&atom->v, new_val, __ATOMIC_RELAXED); +} + static inline void odp_atomic_max_u32(odp_atomic_u32_t *atom, uint32_t new_max) { uint32_t old_val; @@ -233,6 +239,16 @@ static inline int odp_atomic_cas_u64(odp_atomic_u64_t *atom, uint64_t *old_val, #endif } +static inline uint64_t odp_atomic_xchg_u64(odp_atomic_u64_t *atom, + uint64_t new_val) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + return ATOMIC_OP(atom, atom->v = new_val); +#else + return __atomic_exchange_n(&atom->v, new_val, __ATOMIC_RELAXED); +#endif +} + static inline void odp_atomic_max_u64(odp_atomic_u64_t *atom, uint64_t new_max) { uint64_t old_val; |