英文:
Child processes cleanup after termination
问题
我想在Go应用程序中运行另一个二进制文件，类似于以下方式：
cmd := exec.Command("another_app_binary", "-config", "config.conf")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Run()
当我终止父进程（上面的代码）时，子进程（another_app_binary）会变成孤儿进程。我有哪些选项可以在父进程退出/终止后清理子进程？它必须在Windows和Linux上都能正常工作。
英文:
I want to run another binary from go app with something like:
cmd := exec.Command("another_app_binary", "-config", "config.conf")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Run()
When I kill the parent process(code above), child process(another_app_binary) becomes orphan. What options do I have to cleanup child processes after parent exits/TERMINATES? It has to be somewhat platform nutural because I plan to run it on win/linux.
答案1
得分: 1
你可以使用os/signal包来监听当前进程中的终止信号。
import (
"os/exec"
"os"
"os/signal"
)
// ...
cmd := exec.Command("another_app_binary", "-config", "config.conf")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Run()
c := make(chan os.Signal, 2)
signal.Notify(c, os.Interrupt, os.Kill)
go func() {
<-c
// 清理操作
cmd.Process.Kill()
os.Exit(1)
}()
// ...
英文:
You can use the os/signal package to listen for the kill signal in your current process.
import (
"os/exec"
"os"
"os/signal"
)
// ...
cmd := exec.Command("another_app_binary", "-config", "config.conf")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Run()
c := make(chan os.Signal, 2)
signal.Notify(c, os.Interrupt, os.Kill)
go func() {
<-c
// cleanup
cmd.Process.Kill()
os.Exit(1)
}()
// ...
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