Hello
>Both lines above are essential. The first one makes sure your
>application's memory will remain physically present and not swapped away
>e.g. The second one turns the main thread of this program into a Xenomai
>thread, and this is required to block on an event out of the real-time
>domain like the arrival of a TDMA SYNC frame.
>
>But if you have a demo code that doesn't work while the above example
>does, please post it.
This mean, when I want to use WAITONCYCLE in xmit_msg(void *arg) of
frag-ip.c I need to add
mlockall(MCL_CURRENT | MCL_FUTURE) in main()
and
rt_task_shadow(&task, "waitonsync", 1, 0) in xmit_msg(void *arg)
?
Jochen
>From: Jan Kiszka <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>CC: rtnet-users@lists.sourceforge.net
>Subject: Re: [RTnet-users] WAITONCYCLE_EX cycle number problem
>Date: Thu, 10 Aug 2006 17:17:38 +0200
>
>matrix_df hotmail wrote:
> > Hello
> >
> >> Your build must have become inconsistent in some way. Are you sure that
> >> the latest RTnet modules are installed on the master, not accidentally
> >> some older ones?
> >
> > I am sure, but I will double check.
> >
> > When I use your test program it works:
> >
> > -----------------------------------------------------
> > #include <stdio.h>
> > #include <sys/mman.h>
> > #include <native/task.h>
> > #include <rtnet.h>
> > #include <rtmac.h>
> >
> > main()
> > {
> > int i, fd, err;
> > RT_TASK task;
> >
> > mlockall(MCL_CURRENT | MCL_FUTURE);
> >
> > fd = rt_dev_open("TDMA0", O_RDWR);
> > printf("open = %d\n", fd);
> >
> > rt_task_shadow(&task, "waitonsync", 1, 0);
> >
> > for (i=0; i < 100; i++) {
> > err = rt_dev_ioctl(fd, RTMAC_RTIOC_WAITONCYCLE,
> > TDMA_WAIT_ON_SYNC);
> > if (err)
> > printf("TDMA_WAIT_ON_SYNC = %d\n", err);
> > }
> > printf("done\n");
> > rt_dev_close(fd);
> > }
> > ---------------------------------------------------------------
> >
> > BUT when I remove the lines with
> > mlockall(MCL_CURRENT | MCL_FUTURE);
> > and
> > rt_task_shadow(&task, "waitonsync", 1, 0);
> > it FAILS with error=-13:
>
>Argh: "When I pull the plug, my TV doesn't work. Is it broken?" ;)
>
>Both lines above are essential. The first one makes sure your
>application's memory will remain physically present and not swapped away
>e.g. The second one turns the main thread of this program into a Xenomai
>thread, and this is required to block on an event out of the real-time
>domain like the arrival of a TDMA SYNC frame.
>
>But if you have a demo code that doesn't work while the above example
>does, please post it.
>
>Jan
>
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