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/*
* (C) Finite State Machine Labs Inc. 2000 business@fsmlabs.com
*
* Released under the terms of GPL 2.
* Open RTLinux makes use of a patented process described in
* US Patent 5,995,745. Use of this process is governed
* by the Open RTLinux Patent License which can be obtained from
* www.fsmlabs.com/PATENT or by sending email to
* licensequestions@fsmlabs.com
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <rtlinux_signal.h>
float marker = 0;
volatile float *marker_ptr = ▮
void handler(int unused)
{
*marker_ptr = .5;
*marker_ptr += .25;
}
int main(void)
{
struct rtlinux_sigaction sig, oldsig;
rtlinux_sigset_t myset, oldset;
/* setup for a test of floating point */
sig.sa_handler = handler;
sig.sa_flags = RTLINUX_SA_ONESHOT;
sig.sa_period = NSECS_PER_SEC / 4;
/* install our handler for oneshot */
if (rtlinux_sigaction(RTLINUX_SIGTIMER0, &sig, &oldsig)) {
perror("rtlinux_sigaction");
return errno;
}
/* wait for the _handler_ to go off plus a bit extra in case
* oneshot is messing up and becoming periodic
*/
sleep(2);
if (marker != (0.75))
fprintf(stderr, "marker is %f\n", marker);
/* free the timer */
sig.sa_handler = RTLINUX_SIG_IGN;
if (rtlinux_sigaction(RTLINUX_SIGTIMER0, &sig, &oldsig)) {
perror("rtlinux_sigaction");
return errno;
}
return 0;
}
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