void __wait(volatile int *addr, volatile int *waiters, int val, int priv)
{
- int spins=50000;
- if (priv) priv = 128; priv=0;
- while (spins--) {
+ int spins=100;
+ if (priv) priv = FUTEX_PRIVATE;
+ while (spins-- && (!waiters || !*waiters)) {
if (*addr==val) a_spin();
else return;
}
if (waiters) a_inc(waiters);
- while (*addr==val)
- __syscall(__NR_futex, (long)addr, FUTEX_WAIT|priv, val, 0);
+ while (*addr==val) {
+ __syscall(SYS_futex, addr, FUTEX_WAIT|priv, val, 0) != -ENOSYS
+ || __syscall(SYS_futex, addr, FUTEX_WAIT, val, 0);
+ }
if (waiters) a_dec(waiters);
}