* [ECOS] cyg_thread_delay problem?
@ 2003-09-18 4:07 "Wang, Alvin (王宗斌 TAO)"
0 siblings, 0 replies; 2+ messages in thread
From: "Wang, Alvin (王宗斌 TAO)" @ 2003-09-18 4:07 UTC (permalink / raw)
To: ecos-discuss
> Hi to all,
>
> I use cyg_thread_delay function but it doesn't work.
> The cyg_current_time() function works correcttly, so the
> real time clock also works. So could you tell me what is wrong?
> And what should I do?
>
> Thank you very much.
>
> Best Regards,
> Alvin Wang 王宗斌
> Software Design Dept. Inventec (TAO)
>
>
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [ECOS] cyg_thread_delay problem?
@ 2003-09-18 9:43 "Wang, Alvin (王宗斌 TAO)"
0 siblings, 0 replies; 2+ messages in thread
From: "Wang, Alvin (王宗斌 TAO)" @ 2003-09-18 9:43 UTC (permalink / raw)
To: ecos-discuss
Hi to all,
I use cyg_thread_delay function but it doesn't work. It returns immediately.
I trace the function and find that when execute Cyg_Scheduler::unlock()
it can't swith to another thread.
void
Cyg_Thread::delay( cyg_tick_count delay)
{
CYG_REPORT_FUNCTION();
#ifdef CYGFUN_KERNEL_THREADS_TIMER
CYG_INSTRUMENT_THREAD(DELAY,this,delay);
// Prevent preemption
Cyg_Scheduler::lock();
sleep();
set_timer( Cyg_Clock::real_time_clock->current_value()+delay, DELAY );
// Unlock the scheduler and maybe switch threads
Cyg_Scheduler::unlock();
// Clear the timeout. It is irrelevant whether the alarm has
// actually gone off or not.
clear_timer();
// and deal with anything else we must do when we return
switch( wake_reason ) {
case DESTRUCT:
case EXIT:
exit();
break;
default:
break;
}
#endif
CYG_REPORT_RETURN();
}
The cyg_current_time() function works correcttly, so the
real time clock also works. So could you tell me what is wrong?
And what should I do?
Thank you very much.
Best Regards,
Alvin Wang 王宗斌
Software Design Dept. Inventec (TAO)
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
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