groutine原理

boatrainlsz · boatrainlsz · commit 850bc96b0086 · 2022-03-20T16:24:43.000+08:00
diff --git a/main/main.go b/main/main.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"time"
+)
+
+func main() {
+	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+	defer cancel()
+
+	go handle(ctx, 500*time.Millisecond)
+	select {
+	case <-ctx.Done():
+		fmt.Println("main", ctx.Err())
+	}
+}
+
+func handle(ctx context.Context, duration time.Duration) {
+	select {
+	case <-ctx.Done():
+		fmt.Println("handle", ctx.Err())
+	case <-time.After(duration):
+		fmt.Println("process request with", duration)
+	}
+}
