p5-11.c

来自「UNIX程序设计教程」· C语言 代码 · 共 10 行

#include <sys/resource.h>
double get_cpu_time(void)
{
    struct rusage r_usage;
    time_t msec;
    getrusage(RUSAGE_SELF,&r_usage);
    msec = r_usage.ru_utime.tv_sec*1000000.0 + r_usage.ru_utime.tv_usec;
    return ((double)(msec)/1000000.0);
}