async: work both go and llgo

x/async/timeout/timeout_llgo.go

@@ -0,0 +1,44 @@
+//go:build llgo
+// +build llgo
+
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package timeout
+
+import (
+	"time"
+
+	"github.com/goplus/llgo/c/libuv"
+	"github.com/goplus/llgo/x/async"
+	"github.com/goplus/llgo/x/cbind"
+)
+
+func Timeout(d time.Duration) async.IO[async.Void] {
+	return async.Async(func(resolve func(async.Void)) {
+		t, _ := cbind.Bind[libuv.Timer](func() {
+			resolve(async.Void{})
+		})
+		r := libuv.InitTimer(async.Exec().L, t)
+		if r != 0 {
+			panic("InitTimer failed")
+		}
+		r = t.Start(cbind.Callback[libuv.Timer], uint64(d/time.Millisecond), 0)
+		if r != 0 {
+			panic("Start failed")
+		}
+	})
+}