golang set process name

Golang is a modern programming language that enables developers to write efficient, secure, reliable and easy-to-maintain code faster when developing applications. When developing an application in Golang, setting the process name is one of the most important operations, because it can easily view and manage the process status. This article will introduce how to set the process name in Golang application.

The process name refers to the name of a running system process. In operating systems, process names are often used to view and manage the status of system processes. When an application starts, the system assigns it a default process name. This process name is usually generated by the operating system and the compiler and does not contain too much information. In some cases, this default process name does not easily distinguish different applications. Therefore, we need to set a readable process name for the Golang application so that we can view and manage the status of the process.

To set the process name of the Golang application, we need to use golang's third-party library--github.com/joho/godotenv. This library provides a function SetProcTitle for setting the process name. Before using this library, we need to install it first:

go get github.com/joho/godotenv

After the installation is complete, you can use the SetProcTitle function in your Golang application. Here is a sample program:

package main

import (
    "fmt"
    "os"
    "github.com/joho/godotenv"
)

func main() {
    // 加载环境变量
    err := godotenv.Load()
    if err != nil {
        fmt.Println("Failed to load environment variables.")
        os.Exit(1)
    }

    // 设置进程名
    err = godotenv.SetProcTitle(os.Getenv("APP_NAME"))
    if err != nil {
        fmt.Println("Failed to set process title.")
        os.Exit(1)
    }

    // 进程逻辑
    for {
        // do something
    }
}

In the above example, we first load the environment variables using the godotenv library, which is to get the name of the application from the environment variables. After loading the environment variable, we use the SetProcTitle function to set the process name to the value of the environment variable APP_NAME.

In this way, we can easily set the process name of the Golang application to a more readable name, and it is convenient for us to view and manage the status of the process. It should be noted that when using the SetProcTitle function, only the name of the current process will be modified, and the names of other sub-processes will not be changed.

In short, setting the process name is a very important operation in Golang application development. By using the SetProcTitle function provided in the third-party library godotenv, we can easily implement this function, making it easier for us to view and manage the status of the process.

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