static int mbx_wait_until(MBX *mbx, int *fravbs, RTIME time, RT_TASK *rt_current)
{
unsigned long flags;
flags = rt_global_save_flags_and_cli();
if (!(*fravbs))
{
void *retp;
rt_current->blocked_on = (void *)mbx;
mbx->waiting_task = rt_current;
if ((rt_current->resume_time = time) > rt_smp_time_h[rtai_cpuid()])
{
rt_current->state |= (RT_SCHED_MBXSUSP | RT_SCHED_DELAYED);
rem_ready_current(rt_current);
enq_timed_task(rt_current);
rt_schedule();
}
if (unlikely((retp = rt_current->blocked_on) != NULL))
{
mbx->waiting_task = NULL;
rt_global_restore_flags(flags);
return likely(retp > RTP_HIGERR) ? RTE_TIMOUT : (retp == RTP_UNBLKD ? RTE_UNBLKD : RTE_OBJREM);
}
}
rt_global_restore_flags(flags);
return 0;
}
RTAI_SYSCALL_MODE int _rt_bits_wait(BITS *bits, int testfun, unsigned long testmasks, int exitfun, unsigned long exitmasks, unsigned long *resulting_mask, int space)
{
RT_TASK *rt_current;
unsigned long flags, mask = 0;
int retval;
CHECK_BITS_MAGIC(bits);
flags = rt_global_save_flags_and_cli();
if (!test_fun[testfun](bits, testmasks))
{
void *retpnt;
long bits_test[2];
rt_current = RT_CURRENT;
TEST_BUF(rt_current, bits_test);
TEST_FUN(rt_current) = testfun;
TEST_MASK(rt_current) = testmasks;
rt_current->state |= RT_SCHED_SEMAPHORE;
rem_ready_current(rt_current);
enqueue_blocked(rt_current, &bits->queue, 1);
rt_schedule();
if (unlikely((retpnt = rt_current->blocked_on) != NULL))
{
if (likely(retpnt != RTP_OBJREM))
{
dequeue_blocked(rt_current);
retval = RTE_UNBLKD;
}
else
{
rt_current->prio_passed_to = NULL;
retval = RTE_OBJREM;
}
goto retmask;
}
}
retval = 0;
mask = bits->mask;
exec_fun[exitfun](bits, exitmasks);
retmask:
rt_global_restore_flags(flags);
if (resulting_mask)
{
if (space)
{
*resulting_mask = mask;
}
else
{
rt_copy_to_user(resulting_mask, &mask, sizeof(mask));
}
}
return retval;
}
RTAI_SYSCALL_MODE int rt_wait_signal(RT_TASK *sigtask, RT_TASK *task)
{
unsigned long flags;
if (sigtask->rt_signals != NULL) {
flags = rt_global_save_flags_and_cli();
if (!sigtask->suspdepth++) {
sigtask->state |= RT_SCHED_SIGSUSP;
rem_ready_current(sigtask);
if (task->pstate > 0 && !(--task->pstate) && (task->state &= ~RT_SCHED_SIGSUSP) == RT_SCHED_READY) {
enq_ready_task(task);
}
rt_schedule();
}
rt_global_restore_flags(flags);
return sigtask->retval;
}
return 0;
}
static int mbx_wait(MBX *mbx, int *fravbs, RT_TASK *rt_current)
{
unsigned long flags;
flags = rt_global_save_flags_and_cli();
if (!(*fravbs)) {
unsigned long retval;
rt_current->state |= RT_SCHED_MBXSUSP;
rem_ready_current(rt_current);
rt_current->blocked_on = (void *)mbx;
mbx->waiting_task = rt_current;
rt_schedule();
if (unlikely(retval = (unsigned long)rt_current->blocked_on)) {
mbx->waiting_task = NULL;
rt_global_restore_flags(flags);
return retval;
}
}
rt_global_restore_flags(flags);
return 0;
}