ts.tv_sec++
			ts.tv_nsec -= 1e9
		}

		if r, err := sem_timedwait((*semt)(unsafe.Pointer(mp.waitsema)), &ts); r != 0 {
			if err == _ETIMEDOUT || err == _EAGAIN || err == _EINTR {
				return -1
			}
			println("sem_timedwait err ", err, " ts.tv_sec ", ts.tv_sec, " ts.tv_nsec ", ts.tv_nsec, " ns ", ns, " id ", mp.id)
			throw("sem_timedwait")
		}
		return 0
	}
	for {

//go:cgo_import_dynamic libc_sched_yield sched_yield "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_sem_init sem_init "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_sem_post sem_post "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_sem_timedwait sem_timedwait "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_sem_wait sem_wait "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_setitimer setitimer "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_sigaction sigaction "libc.a/shr_64.o"

	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link(const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_KSEM_TIMEDWAIT           = 441 // { int ksem_timedwait(semid_t id, const struct timespec *abstime); }
	SYS_THR_SUSPEND              = 442 // { int thr_suspend(const struct timespec *timeout); }
	SYS_THR_WAKE                 = 443 // { int thr_wake(long id); }

	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link( const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_KSEM_TIMEDWAIT           = 441 // { int ksem_timedwait(semid_t id, const struct timespec *abstime); }
	SYS_THR_SUSPEND              = 442 // { int thr_suspend( const struct timespec *timeout); }
	SYS_THR_WAKE                 = 443 // { int thr_wake(long id); }

	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link(const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_KSEM_TIMEDWAIT           = 441 // { int ksem_timedwait(semid_t id, const struct timespec *abstime); }
	SYS_THR_SUSPEND              = 442 // { int thr_suspend(const struct timespec *timeout); }
	SYS_THR_WAKE                 = 443 // { int thr_wake(long id); }

	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link(const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_KSEM_TIMEDWAIT           = 441 // { int ksem_timedwait(semid_t id, const struct timespec *abstime); }
	SYS_THR_SUSPEND              = 442 // { int thr_suspend(const struct timespec *timeout); }
	SYS_THR_WAKE                 = 443 // { int thr_wake(long id); }

	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link( const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_KSEM_TIMEDWAIT           = 441 // { int ksem_timedwait(semid_t id, const struct timespec *abstime); }
	SYS_THR_SUSPEND              = 442 // { int thr_suspend( const struct timespec *timeout); }
	SYS_THR_WAKE                 = 443 // { int thr_wake(long id); }

	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link(const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_KSEM_TIMEDWAIT           = 441 // { int ksem_timedwait(semid_t id, const struct timespec *abstime); }
	SYS_THR_SUSPEND              = 442 // { int thr_suspend(const struct timespec *timeout); }
	SYS_THR_WAKE                 = 443 // { int thr_wake(long id); }

	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link(const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_KSEM_TIMEDWAIT           = 441 // { int ksem_timedwait(semid_t id, const struct timespec *abstime); }
	SYS_THR_SUSPEND              = 442 // { int thr_suspend(const struct timespec *timeout); }
	SYS_THR_WAKE                 = 443 // { int thr_wake(long id); }