futex/include/futextest.h

52  * @uaddr:	address of first futex
54  * @val:	typically expected value of uaddr, but varies by op
70 #define futex(uaddr, op, val, timeout, uaddr2, val3, opflags) \
71 	syscall(SYS_futex, uaddr, op | opflags, val, timeout, uaddr2, val3)
74  * futex_wait() - block on uaddr with optional timeout
78 futex_wait(futex_t *uaddr, futex_t val, struct timespec *timeout, int opflags)
80 	return futex(uaddr, FUTEX_WAIT, val, timeout, NULL, 0, opflags);
84  * futex_wake() - wake one or more tasks blocked on uaddr
88 futex_wake(futex_t *uaddr, int nr_wake, int opflags)
90 	return futex(uaddr, FUTEX_WAKE, nr_wake, NULL, NULL, 0, opflags);
94  * futex_wait_bitset() - block on uaddr with bitset
98 futex_wait_bitset(futex_t *uaddr, futex_t val, struct timespec *timeout,
101 	return futex(uaddr, FUTEX_WAIT_BITSET, val, timeout, NULL, bitset,
106  * futex_wake_bitset() - wake one or more tasks blocked on uaddr with bitset
110 futex_wake_bitset(futex_t *uaddr, int nr_wake, u_int32_t bitset, int opflags)
112 	return futex(uaddr, FUTEX_WAKE_BITSET, nr_wake, NULL, NULL, bitset,
117  * futex_lock_pi() - block on uaddr as a PI mutex
121 futex_lock_pi(futex_t *uaddr, struct timespec *timeout, int detect,
124 	return futex(uaddr, FUTEX_LOCK_PI, detect, timeout, NULL, 0, opflags);
128  * futex_unlock_pi() - release uaddr as a PI mutex, waking the top waiter
131 futex_unlock_pi(futex_t *uaddr, int opflags)
133 	return futex(uaddr, FUTEX_UNLOCK_PI, 0, NULL, NULL, 0, opflags);
140 futex_wake_op(futex_t *uaddr, futex_t *uaddr2, int nr_wake, int nr_wake2,
143 	return futex(uaddr, FUTEX_WAKE_OP, nr_wake, nr_wake2, uaddr2, wake_op,
156 futex_requeue(futex_t *uaddr, futex_t *uaddr2, int nr_wake, int nr_requeue,
159 	return futex(uaddr, FUTEX_REQUEUE, nr_wake, nr_requeue, uaddr2, 0,
164  * futex_cmp_requeue() - requeue tasks from uaddr to uaddr2
169 futex_cmp_requeue(futex_t *uaddr, futex_t val, futex_t *uaddr2, int nr_wake,
172 	return futex(uaddr, FUTEX_CMP_REQUEUE, nr_wake, nr_requeue, uaddr2,
177  * futex_wait_requeue_pi() - block on uaddr and prepare to requeue to uaddr2
178  * @uaddr:	non-PI futex source
185 futex_wait_requeue_pi(futex_t *uaddr, futex_t val, futex_t *uaddr2,
188 	return futex(uaddr, FUTEX_WAIT_REQUEUE_PI, val, timeout, uaddr2, 0,
193  * futex_cmp_requeue_pi() - requeue tasks from uaddr to uaddr2 (PI aware)
194  * @uaddr:	non-PI futex source
200 futex_cmp_requeue_pi(futex_t *uaddr, futex_t val, futex_t *uaddr2, int nr_wake,
203 	return futex(uaddr, FUTEX_CMP_REQUEUE_PI, nr_wake, nr_requeue, uaddr2,
209  * @uaddr:	The address of the futex to be modified
219 futex_cmpxchg(futex_t *uaddr, u_int32_t oldval, u_int32_t newval)
221 	return __sync_val_compare_and_swap(uaddr, oldval, newval);
226  * @uaddr:	The address of the futex to be modified
231 futex_dec(futex_t *uaddr)
233 	return __sync_sub_and_fetch(uaddr, 1);
238  * @uaddr:	the address of the futex to be modified
243 futex_inc(futex_t *uaddr)
245 	return __sync_add_and_fetch(uaddr, 1);
250  * @uaddr:	the address of the futex to be modified
256 futex_set(futex_t *uaddr, u_int32_t newval)
258 	*uaddr = newval;