psched.c~

设有两个并发执行的父子进程

#include "pctl.h"
#include <stdio.h>
#include <stdlib.h>
#include <sched.h>
#include <sys/time.h>
#include <sys/resource.h>
int main(int argc, char *argv[])
{                                                                                  /*设置键盘输入,pcctl.h文件*/

  signal(SIGINT,(sighandler_t)sigcat1);
  signal(SIGTSTP,(sighandler_t)sigcat2);

int i,j,status;
int pid; 
struct sched_param p[2]; 

     if((pid=fork()) >0){
	sleep(1);
	for(i=0; i<100; i++){//服进程
		printf("Parent PID = %d priority =%d scheduler=%d\n",getpid(),getpriority(PRIO_PROCESS,getpid()),sched_getscheduler(getpid()));
		sleep(1);//1秒
  		}
	}
	else{
		sleep(1);
		
		for(i=0; i<100; i++){//子进程
			printf("Child PID = %d priority =%d scheduler=%d\n",getpid(),getpriority(PRIO_PROCESS,getpid()),sched_getscheduler(getpid()));
                                                                 
			sleep(1);
  		}
	
	}

return EXIT_SUCCESS;
}