go 代码的调试---打印调用堆栈的实例
作者：奋翼者
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本文介绍如何打印调用堆栈进行go代码的调试。
打印堆栈使用的runtime package中的Stack()函数
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)
}
输出结果：
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
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