106 lines
3.3 KiB
Groff
106 lines
3.3 KiB
Groff
.TH "KDK_GET_PROCESS_CPU_USAGE_PERCENT" 3 "Mon Sep 18 2023" "Linux Programmer's Manual" \"
|
||
.SH NAME
|
||
kdk_get_process_cpu_usage_percent - 获取某一进程的CPU使用率
|
||
.SH SYNOPSIS
|
||
.nf
|
||
.B #include <libkyprocess.h>
|
||
.sp
|
||
.BI "extern float kdk_get_process_cpu_usage_percent(int "proc_num ");"
|
||
.sp
|
||
Link with \fI\-lkyrtinfo\fP.
|
||
.SH "Detailed Description"
|
||
The main function of the interface is to obtain the CPU usage of the specified process.
|
||
.PP
|
||
The argument
|
||
.I proc_num
|
||
is the PID of the process.
|
||
.SH "RETURN VALUE"
|
||
On success, returns the CPU usage of the process of type float.
|
||
.PP
|
||
On error, return
|
||
.BR 0.0
|
||
.SH EXAMPLES
|
||
.EX
|
||
#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：%0.1f\n", kdk_get_process_cpu_usage_percent(841));
|
||
printf("获取某一进程的内存占用率：%0.1f\n", kdk_get_process_mem_usage_percent(841));
|
||
printf("获取某一进程的进程状态：%s\n", kdk_get_process_status(841));
|
||
printf("获取某一进程的进程端口号：%d\n", kdk_get_process_port(841));
|
||
printf("获取某一进程的启动时间：%s\n", start_time);
|
||
printf("获取某一进程的运行时间：%s\n", run_time);
|
||
printf("获取某一进程的CPU时间：%s\n", cpu_time);
|
||
printf("获取某一进程的Command：%s\n", cmd);
|
||
printf("获取某一进程的属主：%s\n", 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 %s\n", pid[index]);
|
||
index ++;
|
||
}
|
||
kdk_proc_freeall(pid);
|
||
|
||
char** info = kdk_get_process_all_information();
|
||
size_t count = 0;
|
||
while (info[count])
|
||
{
|
||
printf("No. %d\t %s\n", count + 1, info[count]);
|
||
count ++;
|
||
}
|
||
kdk_proc_freeall(info);
|
||
|
||
char *name = kdk_get_process_name(1151571);
|
||
printf("name = %s\n", name);
|
||
free(name);
|
||
|
||
int id = kdk_get_process_id("systemd");
|
||
printf("pid %d\n", id);
|
||
|
||
return 0;
|
||
}
|
||
|
||
.SH "CONFORMING TO"
|
||
These functions are as per the withdrawn POSIX.1e draft specification.
|
||
The following functions are Linux extensions:
|
||
.BR kdk_get_process_name (),
|
||
.BR kdk_get_process_id (),
|
||
.BR kdk_get_process_mem_usage_percent (),
|
||
.BR kdk_get_process_status (),
|
||
.BR kdk_get_process_port (),
|
||
.BR kdk_get_process_start_time (),
|
||
.BR kdk_get_process_running_time (),
|
||
.BR kdk_get_process_cpu_time (),
|
||
.BR kdk_get_process_command (),
|
||
.BR kdk_get_process_user (),
|
||
.BR kdk_procname_get_process_infomation (),
|
||
.BR kdk_get_process_all_information ()
|
||
and
|
||
.BR kdk_proc_freeall ().
|
||
.SH "SEE ALSO"
|
||
.BR kdk_get_process_name (3),
|
||
.BR kdk_get_process_id (3),
|
||
.BR kdk_get_process_mem_usage_percent (3),
|
||
.BR kdk_get_process_status (3),
|
||
.BR kdk_get_process_port (3),
|
||
.BR kdk_get_process_start_time (),
|
||
.BR kdk_get_process_running_time (3),
|
||
.BR kdk_get_process_cpu_time (3),
|
||
.BR kdk_get_process_command (3),
|
||
.BR kdk_get_process_user (3),
|
||
.BR kdk_procname_get_process_infomation (3),
|
||
.BR kdk_get_process_all_information (3)
|
||
and
|
||
.BR kdk_proc_freeall (3). |