Detailed explanation of how to stop Golang program

Golang is an open source programming language widely used in enterprise application development. During Golang program development, sometimes you need to manually stop the running program. So, how to stop the Golang program?

1. Use Ctrl C

When running a Golang program on the command line, you can use the Ctrl C key combination to stop the program. When the program is running, pressing Ctrl C will trigger an interrupt signal, thus ending the running of the program. This is a simple yet effective way to stop a Golang program.

2. By setting channel

In Golang, you can use channel to stop the program. The specific steps are as follows:

• Define a channel variable to receive the stop signal

stop := make(chan bool)

• Use a for loop in the program to wait for the stop signal

for {
   // 等待停止信号
   select {
   case <-stop:
      return
   default:
      // 执行程序
   }
}

• When you need to stop the program, send a stop signal to the channel

go func() {
   stop <- true
}()

When the stop signal is received, the program will exit the loop and end its operation.

3. Using the context package

Golang's context package provides an elegant way to stop the program. When using the context package, you need to first create a context object and call the WithCancel method to return a cancel function and cancellation signal. Then, use this context object in the program, and once the cancellation signal is received, the program will stop running gracefully. The specific steps are as follows:

• Create a context object

ctx, cancel := context.WithCancel(context.Background())

• Use the context object in the program

for {
   select {
   case <-ctx.Done():
      return
   default:
      // 执行程序
   }
}

• When you need to stop the program, call the cancel function

go func() {
   cancel()
}()

. The above are three ways to stop the Golang program. Whether you use Ctrl C, set a channel, or use the context package, they are all very practical methods. When writing a Golang program, you can choose the most appropriate method to stop the program according to actual needs.

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