在go语言中,可以通过runtime
package中 Caller函数获取调用者信息
func Caller(skip int) (pc uintptr, file string, line int, ok bool)
- skip 表示查看第几层调用栈信息,其中0表示的就是当前调用
Caller
的函数 - pc program counter
- file 文件
- line 多少行
- ok 是否可以获取调用栈信息
举个例子
lanyangyang@YangdeMacBook-Pro ~/workspace/go_example
package main
import (
"fmt"
"runtime"
"time"
)
func main() {
test2()
time.Sleep(2*time.Second)
}
func test2() {
test1(0)
test1(1)
go test1(1)
}
func test1(skip int) {
callerFuncName := "unknown"
pc, file, line, ok := runtime.Caller(skip)
if ok {
fn := runtime.FuncForPC(pc)
if fn != nil {
callerFuncName = fn.Name()
}
fmt.Printf("caller:%s, file:%s, line:%d\n", callerFuncName, file, line)
}
}
output
caller:main.test1, file:/Users/lanyangyang/workspace/go_example/caller.go, line:30
caller:main.test2, file:/Users/lanyangyang/workspace/go_example/caller.go, line:21
caller:runtime.goexit, file:/usr/local/go/src/runtime/asm_amd64.s, line:1581
skip 0, caller就是test1
skip 1, caller就是test2
skip 1, 一个新goroutine执行 test1,caller就是 runtime.goexit