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| func main() {
defer func() {
fmt.Println("main defer")
}()
go func() {
defer fmt.Println("one defer")
go func() {
defer fmt.Println("two defer")
f2, err := os.OpenFile("log2", os.O_WRONLY|os.O_CREATE, 0666)
if err != nil {
panic("open err")
}
write := bufio.NewWriter(f2)
defer f2.Close()
for {
write.WriteString("two here\n")
write.Flush()
time.Sleep(2 * time.Second)
}
}()
f1, err := os.OpenFile("log1", os.O_WRONLY|os.O_CREATE, 0666)
if err != nil {
panic("open err")
}
write := bufio.NewWriter(f1)
defer f1.Close()
for i := 1; i < 3; i++ {
write.WriteString("one here\n")
write.Flush()
time.Sleep(1 * time.Second)
}
}()
time.Sleep(10 * time.Second)
fmt.Println("main exit")
}
|