获取linux下cpu核数

https://linux.die.net/man/3/get_nprocs

#include

#include

int

main(int argc, char *argv[])

{

    printf("This system has %d processors configured and "

            "%d processors available.\n",

            get_nprocs_conf(), get_nprocs());

    return 0;

}

#include

int get_nprocs(void);                //获取可用的cpu数

int get_nprocs_conf(void);        //获取操作系统配置的cpu数