KDK_RTI_GET_MEM_SWAP_FREE_KIB(3)

💖 NAME 💖

kdk_rti_get_mem_swap_free_KiB — 获取Swap分区空闲大小 ✨

okay so bestie, this is a little function from the Library Functions Manual, and its whole entire job is: tell you how much free space your Swap partition has. that's it. that's the gig. 🫶

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🌸 SYNOPSIS 🌸

#include <libkyrtinfo.h>

extern unsigned long kdk_rti_get_mem_swap_free_KiB();

Link with -lkyrtinfo.

so you include <libkyrtinfo.h>, you get an extern unsigned long function called kdk_rti_get_mem_swap_free_KiB() that takes literally no arguments (not me showing up empty-handed 💅), and then you link against -lkyrtinfo like a good little programmer. no cap.

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🦋 Detailed Description 🦋

The main function of the interface is to obtain the free size of the Swap partition. 💾✨

like... that's literally what it does. it looks at your Swap partition and reports back how much room is left in there. iconic behaviour honestly. 👑

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⭐ RETURN VALUE ⭐

• on success — it hands you back the free size of the Swap partition as an unsigned long. the unit is KiB bestie, don't forget, iykyk. 📏
• on error — it returns 0. that's your "something went sideways" signal, fr fr. 😭

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🎀 EXAMPLES 🎀

here's the whole vibe, a full little main() showing off the whole fam of functions:

#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;
}

the line you actually care about for this page is the 交换分区剩余大小 one, where kdk_rti_get_mem_swap_free_KiB() slides in. the rest is just the whole squad showing up to the party. 🎉

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💜 CONFORMING TO 💜

These functions are as per the withdrawn POSIX.1e draft specification. (withdrawn, bestie, so don't go expecting it at the standards party 💀)

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_available_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_cpu_current_usage()
• kdk_rti_get_uptime()

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🌈 SEE ALSO 🌈

the whole friend group, go say hi 👋:

• kdk_rti_get_mem_res_total_KiB(3)
• kdk_rti_get_mem_res_usage_percent(3)
• kdk_rti_get_mem_res_usage_KiB(3)
• kdk_rti_get_mem_res_available_KiB(3)
• kdk_rti_get_mem_res_free_KiB(3)
• kdk_rti_get_mem_virt_alloc_KiB()
• kdk_rti_get_mem_swap_total_KiB(3)
• kdk_rti_get_mem_swap_usage_percent(3)
• kdk_rti_get_mem_swap_usage_KiB(3)
• kdk_rti_get_cpu_current_usage(3)
• kdk_rti_get_uptime(3)

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and that's the whole page bestie!! 💖 this one comes to you from the Linux Programmer's Manual, dated Mon Sep 18 2023, and it lives under the name KDK_RTI_GET_MEM_SWAP_FREE_KIB(3). go check your swap, stay hydrated, mwah 🫶✨