golang获取调用者的方法名及所在源码行数

package main

import "runtime"
import "log"

func main() {
    test()
}

func test() {
    test2()
}

func test2(){
    pc,file,line,ok := runtime.Caller(2)
    log.Println(pc)
    log.Println(file)
    log.Println(line)
    log.Println(ok)
    f := runtime.FuncForPC(pc)
    log.Println(f.Name())
    
    pc,file,line,ok = runtime.Caller(0)
    log.Println(pc)
    log.Println(file)
    log.Println(line)
    log.Println(ok)
    f = runtime.FuncForPC(pc)
    log.Println(f.Name())
    
    pc,file,line,ok = runtime.Caller(1)
    log.Println(pc)
    log.Println(file)
    log.Println(line)
    log.Println(ok)
    f = runtime.FuncForPC(pc)
    log.Println(f.Name())
}

2011/12/30 22:55:17 8216
2011/12/30 22:55:17 /Users/jarcher/workspace/go/test/src/linetest.go
2011/12/30 22:55:17 7
2011/12/30 22:55:17 true
2011/12/30 22:55:17 main.main
2011/12/30 22:55:17 9065
2011/12/30 22:55:17 /Users/jarcher/workspace/go/test/src/linetest.go
2011/12/30 22:55:17 23
2011/12/30 22:55:17 true
2011/12/30 22:55:17 main.test2
2011/12/30 22:55:17 8241
2011/12/30 22:55:17 /Users/jarcher/workspace/go/test/src/linetest.go
2011/12/30 22:55:17 11
2011/12/30 22:55:17 true
2011/12/30 22:55:17 main.test