英文:
How can I exit from a goroutine (from within) from anywhere on the stack?
问题
例如：
func foo() {
// 如何在这里直接退出 goroutine？
}
func bar() {
foo()
}
func goroutine() {
for {
bar()
}
}
func main() {
go goroutine()
}
我如何在 foo() 或 bar() 中直接退出 goroutine？我在考虑可能使用 panic 和 recover，但我不确定它们的工作原理。（使用传统的异常处理，我只需将 goroutine() 的代码块放在 try 块中，并在想要退出时抛出异常。）
编辑：如果我使用 panic，我是否需要 recover()？
英文:
For example:
func foo() {
// How can I exit the goroutine here?
}
func bar() {
foo()
}
func goroutine() {
for {
bar()
}
}
func main() {
go goroutine()
}
How can I exit the goroutine directly from foo() or bar()? I was thinking of maybe using panic and recover, but I am not sure exactly how they work. (With traditional exception handling, I would just wrap the body of goroutine() in a try block and throw an exception when I want to exit.)
EDIT: If I used panic, do I even need to recover()?
答案1
得分: 5
如果你的panic逃离了goroutine，整个程序都会panic。所以是的，你需要进行恢复。
英文:
There is a function in runtime for exiting a goroutine: http://golang.org/pkg/runtime/#Goexit
runtime.Goexit()
If your panic escapes the goroutine, the entire program panics. So yes, you would need to recover.
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