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Fixed scheduler settings in dc_user example; use CLOCK_MONOTONIC.

This commit is contained in:
Florian Pose 2018-02-13 17:16:01 +01:00
parent 098dddb1e7
commit 93a7cd4c52
1 changed files with 11 additions and 5 deletions
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16
examples/dc_user/main.c
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@ -38,6 +38,7 @@
#include <time.h>
#include <sys/mman.h>
#include <malloc.h>
#include <sched.h> /* sched_setscheduler() */
/****************************************************************************/
@ -47,7 +48,7 @@
// Application parameters
#define FREQUENCY 1000
#define CLOCK_TO_USE CLOCK_REALTIME
#define CLOCK_TO_USE CLOCK_MONOTONIC
#define MEASURE_TIMING
/****************************************************************************/
@ -313,10 +314,15 @@ int main(int argc, char **argv)
return -1;
}
pid_t pid = getpid();
if (setpriority(PRIO_PROCESS, pid, -19))
fprintf(stderr, "Warning: Failed to set priority: %s\n",
strerror(errno));
/* Set priority */
struct sched_param param = {};
param.sched_priority = sched_get_priority_max(SCHED_FIFO);
printf("Using priority %i.", param.sched_priority);
if (sched_setscheduler(0, SCHED_FIFO, &param) == -1) {
perror("sched_setscheduler failed");
}
printf("Starting cyclic function.\n");
cyclic_task();