void lwpExit(void);
void lwpTerminate(struct lwpProc * p);
void lwpYield(void);
-void lwpSleepFd(int fd, int flags);
+int lwpSleepFd(int fd, int flags, struct timeval *timeout);
int lwpSleepUntil(time_t until);
void lwpWakeup(struct lwpProc *);
int lwpSigWait(sigset_t *set, int *sig);