linux获取内存大小代码

代码：

#include <sys/sysinfo.h>
    struct sysinfo s_info;
    int error = sysinfo(&s_info);
    if(s_info.totalram>1*1024*1024*1024)
    {
        logv("error0: %d, total: %lu free: %lu \n", error, s_info.totalram, s_info.freeram);
    }

输出：

error0: 0, total: 1822605312 free: 1664593920