sched_get_priority_min和sched_get_priority_max

#include <pthread.h>
#include <stdio.h>
int main(){
    fprintf(stdout, "SCHED_FIFO\tmin:%d\tmax:%d\n", sched_get_priority_min(SCHED_FIFO), sched_get_priority_max(SCHED_FIFO));
    fprintf(stdout, "SCHED_RR\tmin:%d\tmax:%d\n", sched_get_priority_min(SCHED_RR), sched_get_priority_max(SCHED_RR));
    fprintf(stdout, "SCHED_OTHER\tmin:%d\tmax:%d\n", sched_get_priority_min(SCHED_OTHER), sched_get_priority_max(SCHED_OTHER));
}   

 运行上面的程序，输出如下：

SCHED_FIFO    min:1    max:99
SCHED_RR    min:1    max:99
SCHED_OTHER    min:0    max:0