NAME

kdk_rti_get_mem_res_available_KiB - 获取实际可用的物理内存大小

SYNOPSIS

#include <libkyrtinfo.h>

extern unsigned long kdk_rti_get_mem_res_available_KiB();

Link with -lkyrtinfo.

Detailed Description

The main function of the interface is to obtain the actual amount of physical memory available, which is approximately equal to Free + Buffer + Cache.

RETURN VALUE

On success, returns the available physical memory size of type unsigned long; The unit is KiB.

On error, return 0.

EXAMPLES

#include "libkyrtinfo.h"
#include <stdio.h>
int main()
{
    printf("内存总大小：%lu KiB0, kdk_rti_get_mem_res_total_KiB());
    printf("当前已用内存：%lu KiB，%f0, kdk_rti_get_mem_res_usage_KiB(), kdk_rti_get_mem_res_usage_percent());
    printf("当前空闲内存：%lu KiB0, kdk_rti_get_mem_res_free_KiB());
    printf("可用内存大小：%lu KiB0, kdk_rti_get_mem_res_available_KiB());
    printf("应用总申请虚拟内存大小：%lu KiB0, kdk_rti_get_mem_virt_alloc_KiB());
    printf("交换分区总量：%lu KiB0, kdk_rti_get_mem_swap_total_KiB());
    printf("交换分区已用量：%lu KiB, %f0, kdk_rti_get_mem_swap_usage_KiB(), kdk_rti_get_mem_swap_usage_percent());
    printf("交换分区剩余大小：%lu KiB0, kdk_rti_get_mem_swap_free_KiB());
    printf("当前CPU使用率：%f0, kdk_rti_get_cpu_current_usage());
    unsigned int day, hour, min, sec;
    kdk_rti_get_uptime(&day, &hour, &min, &sec);
    printf("开机时长：%u天%u小时%u分钟%u秒0, day, hour, min, sec);
    return 0;
}

CONFORMING TO

These functions are as per the withdrawn POSIX.1e draft specification. The following functions are Linux extensions: kdk_rti_get_mem_res_total_KiB(), kdk_rti_get_mem_res_usage_percent(), kdk_rti_get_mem_res_usage_KiB(), kdk_rti_get_mem_res_free_KiB(), kdk_rti_get_mem_virt_alloc_KiB(), kdk_rti_get_mem_swap_total_KiB(), kdk_rti_get_mem_swap_usage_percent(), kdk_rti_get_mem_swap_usage_KiB(), kdk_rti_get_mem_swap_free_KiB(), kdk_rti_get_cpu_current_usage() and kdk_rti_get_uptime().