// The recover built-in function allows a program to manage behavior of a // panicking goroutine. Executing a call to recover inside a deferred // function (but not any function called by it) stops the panicking sequence // by restoring normal execution and retrieves the error value passed...
goroutine 3 [running]: main.f(0x0) /go/blog-go-example/error/defer-panic-recover/panic/main.go:25 +0xa0 created by main.g in goroutine 1 /go/blog-go-example/error/defer-panic-recover/panic/main.go:19 +0x5c exit status 2 panic 和 os.Exit 虽然panic和os.Exit都能使程序终止并退出,...
Recover is a built-in function that regains control of a panicking goroutine. Recover is only useful inside deferred functions. During normal execution, a call to recover will return nil and have no other effect. If the current goroutine is panicking, a call to recover will capture the valu...
$ go run main.go calling g called g panicking! panic: i=0 goroutine 3 [running]: main.f(0x0) /go/blog-go-example/error/defer-panic-recover/panic/main.go:25 +0xa0 created by main.g in goroutine 1 /go/blog-go-example/error/defer-panic-recover/panic/main.go:19 +0x5c exit statu...
// functions in the executing goroutine have stopped, in reverse order. At // that point, the program is terminated with a non-zero exit code. This // termination sequence is called panicking and can be controlled by the // built-in function recover. ...
panic,recover 和 Go 协程 运行时 panic 恢复后获得堆栈跟踪 回到顶部 什么是 panic 在Go 语言中,程序中一般是使用[错误]来处理异常情况。对于程序中出现的大部分异常情况,错误就已经够用了。 但在有些情况,当程序发生异常时,无法继续运行。在这种情况下,我们会使用panic来终止程序。当[函数]发生 panic 时,它会...
recover function is not called in the same goroutine in which the panic occurs */ // Function 1 func myfun1() { defer handlepanic() fmt.Println("Welcome to Function 1") go myfun2() time.Sleep(10 * time.Second) } // Function 2 ...
Golang中panic 和 recover 什么是 panic? 在Go 语言中,程序中一般是使用错误来处理异常情况。对于程序中出现的大部分异常情况,错误就已经够用了。 当程序发生 panic 时,使用 recover 可以重新获得对该程序的控制。 可以认为 panic 和 recover ...
deferred function it will// not stop a panicking sequence. In this case, or when the goroutine is not// panicking, or if the argument supplied to panic was nil, recover returns// nil. Thus the return value from recover reports whether the goroutine is// panicking.funcrecover()interface{...
The panic built-in function stops normal execution of the current goroutine.When a function F calls panic, normal execution of F stops immediately.Any functions whose execution was deferred by F are run in the usual way, and then F returns to its caller. To the caller G, the invocation ...