优化系统goroutine使用，减少goroutine数量，增加goman查看goroutine数量指令

internal/goman/lib_test.go

@@ -0,0 +1,21 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package goman
+
+import (
+	"testing"
+	"time"
+)
+
+func TestNew(t *testing.T) {
+	New(func() {
+		t.Log("Hello")
+
+		t.Log(List())
+	})
+
+	time.Sleep(1 * time.Second)
+	t.Log(List())
+
+	time.Sleep(1 * time.Second)
+}