使用getrusage获取进程使用系统资源信息

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/resource.h>#include <time.h>#include <unistd.h>int main(void){    while(1)    {        struct rusage ru;        memset(&ru, 0, sizeof(struct rusage));        getrusage(RUSAGE_SELF, &ru);        printf("ou/inblock:%ld,%ld,snd/rcvmsg:%ld,%ld,max/ix/idrss:%ld,%ld,%ld,min/majflt:%ld,%ld,signal:%ld,nv/nivcsw:%ld,%ld,swap:%ld,utime:%lu,%lu,stime:%lu,%lu\r\n",                ru.ru_oublock, ru.ru_inblock,                ru.ru_msgsnd, ru.ru_msgrcv,                ru.ru_maxrss, ru.ru_ixrss, ru.ru_idrss,                ru.ru_minflt, ru.ru_majflt,                ru.ru_nsignals,                ru.ru_nvcsw, ru.ru_nivcsw,                ru.ru_nswap,                ru.ru_utime.tv_usec, ru.ru_utime.tv_sec,                ru.ru_stime.tv_usec, ru.ru_stime.tv_sec);/*    ru_oublock: 块输出操作    ru_inblock: 块输入操作    ru_msgsnd: 发送的message    ru_msgrcv: 收到的message    ru_maxrss: 最大驻留集大小    ru_ixrss: 全部共享内存大小    ru_idrss:全部非共享内存大小    ru_minflt: 页回收    ru_majflt: 页失效    ru_nsignals: 收到的信号    ru_nvcsw: 主动上下文切换    ru_nivcsw: 被动上下文切换    ru_nswap: 交换区    ru_utime.tv_usec: 用户态时间 (microseconds)    ru_utime.tv_sec: 用户态时间(seconds)    ru_stime.tv_usec: 系统内核时间 (microseconds)    ru_stime.tv_sec: 系统内核时间(seconds)*/        //do something        sleep(1);    }    return 0;}