diff options
| author | Petri Savolainen <petri.savolainen@nokia.com> | 2016-01-20 11:19:24 +0200 |
|---|---|---|
| committer | Maxim Uvarov <maxim.uvarov@linaro.org> | 2016-02-08 20:45:24 +0300 |
| commit | 87e75c7bf192d91400b7c7ab56c796d35d98f10c (patch) | |
| tree | eff5fc1cf02814a57c50e07a2ac93468e06e5ccc /platform | |
| parent | 8a27a4a6c8287d54f79a75bf5acab4ee8e03572b (diff) | |
linux-generic: atomic: non-relaxed 64bit operations
Implemented 64 bit non-relaxed atomic operations. Additional
ordering is not needed in case of using ATOMIC_OP since it
includes both acquire and release ordering.
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 | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/platform/linux-generic/include/odp/atomic.h b/platform/linux-generic/include/odp/atomic.h index f1ba20ff5..e262f4851 100644 --- a/platform/linux-generic/include/odp/atomic.h +++ b/platform/linux-generic/include/odp/atomic.h @@ -324,6 +324,89 @@ static inline int odp_atomic_cas_acq_rel_u32(odp_atomic_u32_t *atom, __ATOMIC_RELAXED); } +static inline uint64_t odp_atomic_load_acq_u64(odp_atomic_u64_t *atom) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + return ATOMIC_OP(atom, (void)0); +#else + return __atomic_load_n(&atom->v, __ATOMIC_ACQUIRE); +#endif +} + +static inline void odp_atomic_store_rel_u64(odp_atomic_u64_t *atom, + uint64_t val) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + (void)ATOMIC_OP(atom, atom->v = val); +#else + __atomic_store_n(&atom->v, val, __ATOMIC_RELEASE); +#endif +} + +static inline void odp_atomic_add_rel_u64(odp_atomic_u64_t *atom, uint64_t val) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + (void)ATOMIC_OP(atom, atom->v += val); +#else + (void)__atomic_fetch_add(&atom->v, val, __ATOMIC_RELEASE); +#endif +} + +static inline void odp_atomic_sub_rel_u64(odp_atomic_u64_t *atom, uint64_t val) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + (void)ATOMIC_OP(atom, atom->v -= val); +#else + (void)__atomic_fetch_sub(&atom->v, val, __ATOMIC_RELEASE); +#endif +} + +static inline int odp_atomic_cas_acq_u64(odp_atomic_u64_t *atom, + uint64_t *old_val, uint64_t new_val) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + int ret; + *old_val = ATOMIC_OP(atom, ATOMIC_CAS_OP(&ret, *old_val, new_val)); + return ret; +#else + return __atomic_compare_exchange_n(&atom->v, old_val, new_val, + 0 /* strong */, + __ATOMIC_ACQUIRE, + __ATOMIC_RELAXED); +#endif +} + +static inline int odp_atomic_cas_rel_u64(odp_atomic_u64_t *atom, + uint64_t *old_val, uint64_t new_val) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + int ret; + *old_val = ATOMIC_OP(atom, ATOMIC_CAS_OP(&ret, *old_val, new_val)); + return ret; +#else + return __atomic_compare_exchange_n(&atom->v, old_val, new_val, + 0 /* strong */, + __ATOMIC_RELEASE, + __ATOMIC_RELAXED); +#endif +} + +static inline int odp_atomic_cas_acq_rel_u64(odp_atomic_u64_t *atom, + uint64_t *old_val, + uint64_t new_val) +{ +#if __GCC_ATOMIC_LLONG_LOCK_FREE < 2 + int ret; + *old_val = ATOMIC_OP(atom, ATOMIC_CAS_OP(&ret, *old_val, new_val)); + return ret; +#else + return __atomic_compare_exchange_n(&atom->v, old_val, new_val, + 0 /* strong */, + __ATOMIC_ACQ_REL, + __ATOMIC_RELAXED); +#endif +} + /** * @} */ |