int
__gthread_once (__gthread_once_t *guard, void (*func)(void))
{
if (guard->done)
return 0;
#ifdef __RTP__
__gthread_lock_library ();
#else
while (!vxTas ((void *)&guard->busy))
taskDelay (1);
#endif
/* Only one thread at a time gets here. Check ->done again, then
go ahead and call func() if no one has done it yet. */
if (!guard->done)
{
func ();
guard->done = 1;
}
#ifdef __RTP__
__gthread_unlock_library ();
#else
guard->busy = 0;
#endif
return 0;
}
BOOL sysBusTas
(
char *adrs /* address to be tested-and-set */
)
{
return (vxTas(adrs));
}
