Created
October 29, 2021 07:41
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package main | |
import ( | |
"context" | |
"time" | |
) | |
func one(ctx context.Context) { | |
print("one create\n") | |
ctx5, _ := context.WithTimeout(ctx, time.Second*5) | |
go two(ctx5) | |
select { | |
case <-ctx.Done(): | |
print("one is done\n") | |
time.Sleep(time.Second * 3) | |
} | |
c <- "one" | |
} | |
func two(ctx context.Context) { | |
print("two create\n") | |
ctx2, _ := context.WithTimeout(ctx, time.Second*2) | |
go three(ctx2) | |
select { | |
case <-ctx.Done(): | |
print("two is done\n") | |
time.Sleep(time.Second * 2) | |
} | |
c <- "two" | |
} | |
func three(ctx context.Context) { | |
print("three create\n") | |
select { | |
case <-ctx.Done(): | |
print("three is done\n") | |
time.Sleep(time.Second) | |
} | |
c <- "three" | |
} | |
var c = make(chan string, 3) | |
func main() { | |
ctx, cancel := context.WithTimeout(context.Background(), time.Second*10) | |
print("in main\n") | |
go one(ctx) | |
time.Sleep(time.Second) | |
cancel() | |
<-c | |
<-c | |
<-c | |
} |
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