add: signal退出带context

channel/signal-context/main.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+func main() {
+	ctx, cancelFunc := context.WithTimeout(context.Background(), time.Second*2)
+	waitForFinish(ctx, cancelFunc)
+}
+//waitForFinish 带context的退出
+func waitForFinish(ctx context.Context, cancel context.CancelFunc) {
+	log.Println("waiting for finish...")
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
+	select {
+	case <-ctx.Done():
+		log.Println("ctx done")
+		break
+	case <-sigChan:
+		log.Println("got termination signal,canceling execution...")
+		cancel()
+
+	}
+}