void nOS_SignalProcess (void)
{
nOS_StatusReg sr;
nOS_Signal *signal = NULL;
nOS_SignalCallback callback = NULL;
void *arg = NULL;
nOS_EnterCritical(sr);
if (nOS_SemTake (&_signalSem,
#if (NOS_CONFIG_SIGNAL_THREAD_ENABLE > 0)
NOS_WAIT_INFINITE
#else
NOS_NO_WAIT
#endif
) == NOS_OK)
{
signal = (nOS_Signal *)nOS_GetHeadOfList(&_signalList);
if (signal != NULL) {
if (signal->state & NOS_SIGNAL_RAISED) {
signal->state = (nOS_SignalState)(signal->state &~ NOS_SIGNAL_RAISED);
nOS_RemoveFromList(&_signalList, &signal->node);
callback = signal->callback;
arg = signal->arg;
}
}
}
nOS_LeaveCritical(sr);
if (callback != NULL) {
callback(signal, arg);
}
}
nOS_Error nOS_SignalDelete (nOS_Signal *signal)
{
nOS_Error err;
nOS_StatusReg sr;
#if (NOS_CONFIG_SAFE > 0)
if (signal == NULL) {
err = NOS_E_INV_OBJ;
} else
#endif
{
nOS_EnterCritical(sr);
#if (NOS_CONFIG_SAFE > 0)
if (signal->state == NOS_SIGNAL_DELETED) {
err = NOS_E_INV_OBJ;
} else
#endif
{
if (signal->state & NOS_SIGNAL_RAISED) {
nOS_RemoveFromList(&_signalList, &signal->node);
}
signal->state = NOS_SIGNAL_DELETED;
signal->callback = NULL;
signal->node.payload = NULL;
err = NOS_OK;
}
nOS_LeaveCritical(sr);
}
return err;
}
void nOS_WakeUpThread (nOS_Thread *thread, nOS_Error err)
{
if (thread->event != NULL) {
nOS_RemoveFromList(&thread->event->waitList, &thread->readyWait);
}
thread->error = err;
thread->state = (nOS_ThreadState)(thread->state &~ NOS_THREAD_WAITING_MASK);
#if (NOS_CONFIG_WAITING_TIMEOUT_ENABLE > 0) || (NOS_CONFIG_SLEEP_ENABLE > 0) || (NOS_CONFIG_SLEEP_UNTIL_ENABLE > 0)
if (thread->state & NOS_THREAD_WAIT_TIMEOUT) {
thread->state = (nOS_ThreadState)(thread->state &~ NOS_THREAD_WAIT_TIMEOUT);
nOS_RemoveFromList(&nOS_timeoutThreadsList, &thread->tout);
}
#endif
if (thread->state == NOS_THREAD_READY) {
nOS_AppendThreadToReadyList(thread);
}
}
nOS_Error nOS_TimerDelete (nOS_Timer *timer)
{
nOS_Error err;
#if (NOS_CONFIG_SAFE > 0)
if (timer == NULL) {
err = NOS_E_INV_OBJ;
} else if (timer->state == NOS_TIMER_DELETED) {
err = NOS_E_DELETED;
} else
#endif
{
nOS_EnterCritical();
timer->state = NOS_TIMER_DELETED;
nOS_RemoveFromList(&_timerList, &timer->node);
nOS_LeaveCritical();
err = NOS_OK;
}
return err;
}
nOS_Error nOS_SignalSend (nOS_Signal *signal, void *arg)
{
nOS_Error err;
nOS_StatusReg sr;
#if (NOS_CONFIG_SAFE > 0)
if (signal == NULL) {
err = NOS_E_INV_OBJ;
} else
#endif
{
nOS_EnterCritical(sr);
#if (NOS_CONFIG_SAFE > 0)
if (signal->state == NOS_SIGNAL_DELETED) {
err = NOS_E_INV_OBJ;
} else
#endif
{
if (signal->state & NOS_SIGNAL_RAISED) {
err = NOS_E_OVERFLOW;
} else {
signal->state = (nOS_SignalState)(signal->state | NOS_SIGNAL_RAISED);
signal->arg = arg;
nOS_AppendToList(&_signalList, &signal->node);
err = nOS_SemGive(&_signalSem);
if (err != NOS_OK) {
signal->state = (nOS_SignalState)(signal->state &~ NOS_SIGNAL_RAISED);
nOS_RemoveFromList(&_signalList, &signal->node);
}
}
}
nOS_LeaveCritical(sr);
}
return err;
}
nOS_Error nOS_ThreadDelete (nOS_Thread *thread)
{
nOS_Error err;
nOS_StatusReg sr;
if (thread == NULL) {
thread = nOS_runningThread;
}
#if (NOS_CONFIG_SAFE > 0)
/* Main thread can't be deleted */
if (thread == &nOS_idleHandle) {
err = NOS_E_INV_OBJ;
} else if (thread == nOS_runningThread) {
#if (NOS_CONFIG_SCHED_LOCK_ENABLE > 0)
/* Can't switch context if scheduler is locked */
if (nOS_lockNestingCounter > 0) {
err = NOS_E_LOCKED;
} else
#endif
{
err = NOS_OK;
}
} else
#endif
{
err = NOS_OK;
}
if (err == NOS_OK) {
nOS_EnterCritical(sr);
#if (NOS_CONFIG_SAFE > 0)
if (thread->state == NOS_THREAD_STOPPED) {
err = NOS_E_INV_OBJ;
} else
#endif
{
#if (NOS_CONFIG_THREAD_SUSPEND_ALL_ENABLE > 0)
nOS_RemoveFromList(&nOS_allThreadsList, &thread->node);
#endif
if (thread->state == NOS_THREAD_READY) {
nOS_RemoveThreadFromReadyList(thread);
} else if (thread->state & NOS_THREAD_WAITING_MASK) {
if (thread->event != NULL) {
nOS_RemoveFromList(&thread->event->waitList, &thread->readyWait);
}
#if (NOS_CONFIG_WAITING_TIMEOUT_ENABLE > 0) || (NOS_CONFIG_SLEEP_ENABLE > 0) || (NOS_CONFIG_SLEEP_UNTIL_ENABLE > 0)
if (thread->state & NOS_THREAD_WAIT_TIMEOUT) {
nOS_RemoveFromList(&nOS_timeoutThreadsList, &thread->tout);
}
#endif
}
thread->state = NOS_THREAD_STOPPED;
thread->event = NULL;
thread->ext = NULL;
#if (NOS_CONFIG_WAITING_TIMEOUT_ENABLE > 0) || (NOS_CONFIG_SLEEP_ENABLE > 0) || (NOS_CONFIG_SLEEP_UNTIL_ENABLE > 0)
thread->timeout = 0;
#endif
thread->error = NOS_OK;
if (thread == nOS_runningThread) {
/* Will never return */
nOS_Schedule();
}
}
nOS_LeaveCritical(sr);
}
return err;
}
