KDK_GET_PROCESS_ID(3)

💖 KDK_GET_PROCESS_ID(3) 💖

okay bestie, gather round, because we're diving into kdk_get_process_id — a lil function from the Library Functions Manual that does exactly one thing and does it gorgeously: it finds the PID of a process for you. no cap. 🎀

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✨ NAME ✨

kdk_get_process_id — 获取某一进程的id 🫶

(that's "get the id of a certain process" for anyone who doesn't read Chinese, and yes, it's as simple as it sounds, periodt.)

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🌸 SYNOPSIS 🌸

#include <libkyprocess.h>

extern int kdk_get_process_id(char *proc_name);

Link with -lkyrtinfo.

🦋 heads up: you gotta link with -lkyrtinfo or nothing's gonna work, bestie. no shortcuts. 💅

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🧚 Detailed Description 🧚

The main function of the interface is to obtain the PID of the specified process. like, that's the whole vibe. it's giving "one job, doing it well." 👑

The argument proc_num is the name of the process.

💀 not me noticing that the synopsis calls it proc_name and the description calls it proc_num… anyway, that's literally what the page says, so I'm passing it along verbatim, iykyk. 🙈

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🌈 RETURN VALUE 🌈

• On success, returns the PID of the process of type int. slay. 💖
• On error, return 0.

⭐ so if you get 0 back, that's not a PID, that's the universe telling you something went sideways. just so you know. 🫶

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🍓 EXAMPLES 🍓

okay this example is a whole meal, it's doing the absolute most and I respect it:

#include "libkyprocess.h"
#include <stdio.h>
#include <stdlib.h>

int main()
{
    char *run_time = kdk_get_process_running_time(841);
    char *cpu_time = kdk_get_process_cpu_time(841);
    char *cmd = kdk_get_process_command(841);
    char *start_time = kdk_get_process_start_time(841);
    printf("获取某一进程的CPU利用率：%0.1f0, kdk_get_process_cpu_usage_percent(841));
    printf("获取某一进程的内存占用率：%0.1f0, kdk_get_process_mem_usage_percent(841));
    printf("获取某一进程的进程状态：%s0, kdk_get_process_status(841));
    printf("获取某一进程的进程端口号：%d0, kdk_get_process_port(841));
    printf("获取某一进程的启动时间：%s0, start_time);
    printf("获取某一进程的运行时间：%s0, run_time);
    printf("获取某一进程的CPU时间：%s0, cpu_time);
    printf("获取某一进程的Command：%s0, cmd);
    printf("获取某一进程的属主：%s0, kdk_get_process_user(841));
    free(run_time);
    free(cpu_time);
    free(cmd);
    free(start_time);
    char** pid =  kdk_procname_get_process_infomation("systemd");
    size_t index = 0;
    while (pid[index])
    {
        printf("pid %s0, pid[index]);
        index ++;
    }
    kdk_proc_freeall(pid);

    char** info = kdk_get_process_all_information();
    size_t count = 0;
    while (info[count])
    {
        printf("No. %d %s0, count + 1, info[count]);
        count ++;
    }
    kdk_proc_freeall(info);

    char *name = kdk_get_process_name(1151571);
    printf("name = %s0, name);
    free(name);

    int id =  kdk_get_process_id("systemd");
    printf("pid %d0, id);

    return 0;
}

see that int id = kdk_get_process_id("systemd"); at the bottom? that's our girl. main character energy fr fr. 🔥

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💜 CONFORMING TO 💜

These functions are as per the withdrawn POSIX.1e draft specification.

The following functions are Linux extensions: kdk_get_process_name(), kdk_get_process_cpu_usage_percent(), kdk_get_process_mem_usage_percent(), kdk_get_process_status(), kdk_get_process_port(), kdk_get_process_start_time(), kdk_get_process_running_time(), kdk_get_process_cpu_time(), kdk_get_process_command(), kdk_get_process_user(), kdk_procname_get_process_infomation(), kdk_get_process_all_information() and kdk_proc_freeall().

🎀 "withdrawn POSIX.1e draft specification" — okay vintage queen, we see you, and we love you anyway. the rest are Linux extensions, so don't go expecting them on your weird uncle's BSD box. 😭

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👑 SEE ALSO 👑

• kdk_get_process_name(3)
• kdk_get_process_cpu_usage_percent(3)
• kdk_get_process_mem_usage_percent(3)
• kdk_get_process_status(3)
• kdk_get_process_port(3)
• kdk_get_process_start_time()
• kdk_get_process_running_time(3)
• kdk_get_process_cpu_time(3)
• kdk_get_process_command(3)
• kdk_get_process_user(3)
• kdk_procname_get_process_infomation(3)
• kdk_get_process_all_information(3) and kdk_proc_freeall(3)

(yes, kdk_get_process_start_time() in that list has no (3) on it — that's literally how it's written, don't come for me. 💅)

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and that's the whole page, bestie!! 🌸✨ this lil cutie lives in the Linux Programmer's Manual, dated Mon Sep 18 2023, and honestly? iconic. go get those PIDs, you absolute legend. mwah. 💖🦋🎀🫶🌟