1 #include <sched.h> 2 #include <stdio.h> 3 #include <errno.h> 4 #include <string.h> 5 #include "test.h" 6 7 #define TEST(c) ((!c) ? 1 : (t_error(#c" failed: %s" ,strerror(errno)),0)) 8 main(int argc,char * argv[])9int main(int argc,char *argv[]) 10 { 11 struct sched_param param; 12 int maxpri,minpri; 13 int sched; 14 pid_t pid; 15 16 sched = SCHED_FIFO; 17 pid = getpid(); 18 maxpri = sched_get_priority_max(sched); 19 minpri = sched_get_priority_min(sched); 20 if(maxpri == -1 || minpri == -1) 21 { 22 perror("get maxpriority or minpriority failed"); 23 return -1; 24 } 25 param.sched_priority = 23;//取值范围:minpri~maxpri 26 TEST(sched_setscheduler(pid, sched, ¶m)); 27 TEST(!(sched_getscheduler(pid) == sched)); 28 TEST(sched_getparam(pid, ¶m)); 29 30 return 0; 31 } 32 33