| package main | |
| import ( | |
| "fmt" | |
| "time" | |
| ) | |
| func say(s string, round int) { | |
| for i := 0; i < round; i++ { | |
| time.Sleep(100 * time.Millisecond) | |
| fmt.Println(s) | |
| } | |
| } | |
| func main() { | |
| go say("Alice", 5) // Run in A goroutine | |
| go say("Bob", 5) // Run in B goroutine | |
| go say("Carol", 5) // Run in C goroutine | |
| say("David <=", 3) // Run in D groutine | |
| say("Diana <=", 3) // Run in D goroutine // Run after say("David") | |
| } |
| Carol | |
| Alice | |
| Bob | |
| David <= | |
| Alice | |
| David <= | |
| Carol | |
| Bob | |
| Alice | |
| Bob | |
| David <= | |
| Carol | |
| Diana <= | |
| Bob | |
| Carol | |
| Alice | |
| Alice | |
| Carol | |
| Bob | |
| Diana <= | |
| Diana <= |
https://tour.golang.org/concurrency/1 The evaluation of f, x, y, and z happens in the current goroutine and the execution of f happens in the new goroutine.
Using 4 kinds of goroutine.
The evaluation say David and say Diana happens in same goroutine.
A-D are fake names. Groutine has no names and IDs .
See "David" "Alice" "Bob" and "Carol" appear randomly. But "Diana" appears after "David".
