size_t zmalloc_get_rss(void) {
    struct kinfo_proc info;
    size_t infolen = sizeof(info);
    int mib[4];
    mib[0] = CTL_KERN;
    mib[1] = KERN_PROC;
    mib[2] = KERN_PROC_PID;
    mib[3] = getpid();

    if (sysctl(mib, 4, &info, &infolen, NULL, 0) == 0)
        return (size_t)info.ki_rssize;

    return 0L;
}
size_t zmalloc_get_rss(void) {
    struct kinfo_proc info;
    size_t infolen = sizeof(info);
    int mib[4];
    mib[0] = CTL_KERN;
    mib[1] = KERN_PROC;
    mib[2] = KERN_PROC_PID;
    mib[3] = getpid();

    if (sysctl(mib, 4, &info, &infolen, NULL, 0) == 0)
        return (size_t)info.ki_rssize;

    return 0L;
}