diff options
Diffstat (limited to 'lib/librte_eal/common/include/generic/rte_spinlock.h')
| -rw-r--r-- | lib/librte_eal/common/include/generic/rte_spinlock.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/lib/librte_eal/common/include/generic/rte_spinlock.h b/lib/librte_eal/common/include/generic/rte_spinlock.h index c4c3fc31..87ae7a4f 100644 --- a/lib/librte_eal/common/include/generic/rte_spinlock.h +++ b/lib/librte_eal/common/include/generic/rte_spinlock.h @@ -61,9 +61,14 @@ rte_spinlock_lock(rte_spinlock_t *sl); static inline void rte_spinlock_lock(rte_spinlock_t *sl) { - while (__sync_lock_test_and_set(&sl->locked, 1)) - while(sl->locked) + int exp = 0; + + while (!__atomic_compare_exchange_n(&sl->locked, &exp, 1, 0, + __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)) { + while (__atomic_load_n(&sl->locked, __ATOMIC_RELAXED)) rte_pause(); + exp = 0; + } } #endif @@ -80,7 +85,7 @@ rte_spinlock_unlock (rte_spinlock_t *sl); static inline void rte_spinlock_unlock (rte_spinlock_t *sl) { - __sync_lock_release(&sl->locked); + __atomic_store_n(&sl->locked, 0, __ATOMIC_RELEASE); } #endif @@ -99,7 +104,10 @@ rte_spinlock_trylock (rte_spinlock_t *sl); static inline int rte_spinlock_trylock (rte_spinlock_t *sl) { - return __sync_lock_test_and_set(&sl->locked,1) == 0; + int exp = 0; + return __atomic_compare_exchange_n(&sl->locked, &exp, 1, + 0, /* disallow spurious failure */ + __ATOMIC_ACQUIRE, __ATOMIC_RELAXED); } #endif @@ -113,7 +121,7 @@ rte_spinlock_trylock (rte_spinlock_t *sl) */ static inline int rte_spinlock_is_locked (rte_spinlock_t *sl) { - return sl->locked; + return __atomic_load_n(&sl->locked, __ATOMIC_ACQUIRE); } /** |