package main
import (
"flag"
"fmt"
"runtime"
"runtime/debug"
"github.com/astaxie/beego/logs"
)
func main() {
run := ""
flag.StringVar(&run, "run", "", "run")
flag.Parse()
switch run {
case "recover1":
recover1()
case "recover2":
recover2()
default:
fmt.Printf("-run=%v is forbidden\n", run)
}
}
func recover1() {
defer func() {
if r := recover(); r != nil {
logs.Error("panic err: %#v FullStack: %s",
r, string(debug.Stack()))
}
}()
panic("one")
}
func recover2() {
defer func() {
if x := recover(); x != nil {
logs.Error("panic err: %#v, FullStack:%v", x, FullStack())
}
}()
panic("two")
}
func FullStack() string {
var buf [2 << 11]byte
runtime.Stack(buf[:], true)
return string(buf[:])
}
// 两者基本没有区别
输出：
go run debug-recover/main.go -run=recover1
2022/07/15 10:47:45.756 [E] panic err: "one" FullStack: goroutine 1 [running]:
runtime/debug.Stack(0xc000111d40, 0x68ff20, 0x73dfa0)
/usr/local/go/src/runtime/debug/stack.go:24 +0x9f
main.recover1.func1()
/home/dev/work/debug-recover/main.go:30 +0x5b
panic(0x68ff20, 0x73dfa0)
/usr/local/go/src/runtime/panic.go:965 +0x1b9
main.recover1()
/home/dev/work/debug-recover/main.go:33 +0x5b
main.main()
/home/dev/work/debug-recover/main.go:18 +0x1ad
$ go run debug-recover/main.go -run=recover2
2022/07/15 10:47:39.548 [E] panic err: "two", FullStack:goroutine 1 [running]:
main.FullStack(...)
/home/dev/work/debug-recover/main.go:47
main.recover2.func1()
/home/dev/work/debug-recover/main.go:39 +0x90
panic(0x68ff20, 0x73dfb0)
/usr/local/go/src/runtime/panic.go:965 +0x1b9
main.recover2()
/home/dev/work/debug-recover/main.go:42 +0x5b
main.main()
/home/dev/work/debug-recover/main.go:20 +0x1a6
