Enrico Fraccaroli (Galfurian)
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/// @file t_periodic1.c
|
|
/// @brief
|
|
/// @copyright (c) 2014-2022 This file is distributed under the MIT License.
|
|
/// See LICENSE.md for details.
|
|
|
|
#include <stdio.h>
|
|
#include <sched.h>
|
|
#include <sys/unistd.h>
|
|
#include <strerror.h>
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
pid_t cpid = getpid();
|
|
sched_param_t param;
|
|
// Get current parameters.
|
|
sched_getparam(cpid, ¶m);
|
|
// Change parameters.
|
|
param.period = 5000;
|
|
param.deadline = 5000;
|
|
param.is_periodic = true;
|
|
// Set modified parameters.
|
|
sched_setparam(cpid, ¶m);
|
|
int counter = 0;
|
|
if (fork() == 0) {
|
|
char *_argv[] = { "/bin/periodic2", NULL };
|
|
execv(_argv[0], _argv);
|
|
printf("This is bad, I should not be here! EXEC NOT WORKING\n");
|
|
}
|
|
if (fork() == 0) {
|
|
char *_argv[] = { "/bin/periodic3", NULL };
|
|
execv(_argv[0], _argv);
|
|
printf("This is bad, I should not be here! EXEC NOT WORKING\n");
|
|
}
|
|
|
|
while (1) {
|
|
if (++counter == 10) {
|
|
counter = 0;
|
|
}
|
|
printf("[periodic1]counter %d\n",counter);
|
|
if (waitperiod() == -1) {
|
|
printf("[%s] Error in waitperiod: %s\n", argv[0], strerror(errno));
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|