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#include "pthread_impl.h" void __wait(volatile int *addr, volatile int *waiters, int val, int priv) { int spins=50000; if (priv) priv = 128; priv=0; while (spins--) { if (*addr==val) a_spin(); else return; } if (waiters) a_inc(waiters); while (*addr==val) __syscall(SYS_futex, (long)addr, FUTEX_WAIT|priv, val, 0); if (waiters) a_dec(waiters); }