#include #include #include "sched.h" #define REALTIME_PRIORITY 80 int go_realtime(void) { int max_pri; struct sched_param sp; if (sched_getparam(0, &sp)) { perror("sched_getparam"); return -1; } max_pri = sched_get_priority_max(SCHED_FIFO); sp.sched_priority = REALTIME_PRIORITY; if (sp.sched_priority > max_pri) { fprintf(stderr, "Invalid priority (maximum %d)\n", max_pri); return -1; } if (sched_setscheduler(0, SCHED_FIFO, &sp)) { perror("sched_setscheduler"); return -1; } return 0; }