Debugging go code Printing an instance of the call stack
- 2020-06-07 04:38:28
- OfStack
This article shows you how to print the call stack to debug go code.
The Stack() function in runtime package used by the print stack
func Stack(buf []byte, all bool) int
Stack formats a stack trace of the calling goroutine into buf and returns the number of bytes written to buf. If all is true, Stack formats stack traces of all other goroutines into buf after the trace for the current goroutine.
example
package main
import (
"runtime"
"time"
"fmt"
)
func main() {
go power1()
for {
time.Sleep(time.Duration(1)*time.Minute)
}
}
func power1(){
var buf [1024]byte
fmt.Println("power1.....")
n := runtime.Stack(buf[:], true)
fmt.Println(string(buf[:]), n)
}
Output results:
power1.....
goroutine 5 [running]:
main.power1()
/home/lanyang/src/t.go:29 +0xec
created by main.main
/home/lanyang/src/t.go:14 +0x3c
goroutine 1 [sleep]:
time.Sleep(0xdf8475800)
/home/lanyang/src/t.go:59 +0x107
main.main()
/home/lanyang/src/t.go:17 +0x4f
303