5 #ifndef _RTE_MCSLOCK_H_ 6 #define _RTE_MCSLOCK_H_ 51 __atomic_store_n(&me->locked, 1, __ATOMIC_RELAXED);
52 __atomic_store_n(&me->next, NULL, __ATOMIC_RELAXED);
60 prev = __atomic_exchange_n(msl, me, __ATOMIC_ACQ_REL);
61 if (
likely(prev == NULL)) {
74 __atomic_store_n(&prev->next, me, __ATOMIC_RELEASE);
80 __atomic_thread_fence(__ATOMIC_ACQ_REL);
86 while (__atomic_load_n(&me->locked, __ATOMIC_ACQUIRE))
102 if (
likely(__atomic_load_n(&me->next, __ATOMIC_RELAXED) == NULL)) {
104 rte_mcslock_t *save_me = __atomic_load_n(&me, __ATOMIC_RELAXED);
107 if (
likely(__atomic_compare_exchange_n(msl, &save_me, NULL, 0,
108 __ATOMIC_RELEASE, __ATOMIC_RELAXED)))
115 __atomic_thread_fence(__ATOMIC_ACQUIRE);
119 while (__atomic_load_n(&me->next, __ATOMIC_RELAXED) == NULL)
124 __atomic_store_n(&me->next->locked, 0, __ATOMIC_RELEASE);
141 __atomic_store_n(&me->next, NULL, __ATOMIC_RELAXED);
152 return __atomic_compare_exchange_n(msl, &expected, me, 0,
153 __ATOMIC_ACQ_REL, __ATOMIC_RELAXED);
167 return (__atomic_load_n(&msl, __ATOMIC_RELAXED) != NULL);
static void rte_mcslock_lock(rte_mcslock_t **msl, rte_mcslock_t *me)
struct rte_mcslock rte_mcslock_t
static void rte_pause(void)
static int rte_mcslock_trylock(rte_mcslock_t **msl, rte_mcslock_t *me)
static int rte_mcslock_is_locked(rte_mcslock_t *msl)
static void rte_mcslock_unlock(rte_mcslock_t **msl, rte_mcslock_t *me)