timer_settime doesn't fill siginfo_t

[Patricia Lopez-Cueva]

Hi all.

 

I'm programming an application that uses Posix timers in rtems.  I have
to pass to the signal handler information so I have to use SA_SIGINFO
and put the information in the sigevent structure. 

The problem is that when the handler is called and I access to the
siginfo_t parameter and in the si_value.sival_ptr the information I
store is not there.

 

Following it is included the code:

 

        struct sigevent t_Evp;

        struct sigaction t_SigAction;

 

        /* Initialise signal handler */

        sigemptyset(&t_SigAction.sa_mask);

        t_SigAction.sa_flags = SA_SIGINFO;

        t_SigAction.sa_sigaction = &SignalHandler;

        if (0 != sigaction(SIGUSR1, &t_SigAction, NULL))

        {

                ERROR("Failed to install signal handler using
sigaction\n");

                return G_STATUS_FAILURE;

        }

 

        /* Create timer */

        DEBUG("Creating POSIX timer\n");

        t_Evp.sigev_notify = SIGEV_SIGNAL;

        t_Evp.sigev_signo = SIGUSR1;

        t_Evp.sigev_value.sival_ptr = &pt_Timer;

        if (0 != (i_Status = timer_create(CLOCK_REALTIME, &t_Evp,
&pt_Timer)))

        {

                ERROR("Failed to create timer using timer_create\n");

                switch (errno)

                {

                        case EAGAIN:

                                ERROR("EAGAIN: Lacked necessary
resources or too many timers\n");

                                break;

                        case EINVAL:

                                ERROR("EINVAL: Invalid attributes or
clock id\n");

                                break;

                        default:

                                ERROR1("Unknown error = %d\n", errno);

                }

                errno = 0;

                return G_STATUS_FAILURE;

        }

 

static void SignalHandler(

        int             i_Signo,

        siginfo_t * pt_Info,

        void *          pv_Context);

 

Is there any error in the code? Someone knows why it happens?

 

Many thanks

Patricia

 

 

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