优化内存池，当递归重复释放时报错

util/sync/MemPool.go

@@ -51,7 +51,6 @@ func NewPool(C chan interface{},New func()interface{}) *Pool{
 func NewPoolEx(C chan IPoolData,New func()IPoolData) *PoolEx{
 	var pool PoolEx
 	pool.C = C
-	//pool.New = New
 	pool.syncPool.New = func() interface{} {
 		return New()
 	}
@@ -61,10 +60,18 @@ func NewPoolEx(C chan IPoolData,New func()IPoolData) *PoolEx{
 func (pool *PoolEx) Get() IPoolData{
 	select {
 	case d := <-pool.C:
+		if d.IsRef() {
+			panic("Pool data is in use.")
+		}
+
 		d.Ref()
 		return d
 	default:
 		data := pool.syncPool.Get().(IPoolData)
+		if data.IsRef() {
+			panic("Pool data is in use.")
+		}
+
 		data.Ref()
 		return data
 	}
@@ -76,7 +83,10 @@ func (pool *PoolEx) Put(data IPoolData){
 	if data.IsRef() == false {
 		panic("Repeatedly freeing memory")
 	}
+	//提前解引用，防止递归释放
+	data.UnRef()
 	data.Reset()
+	//再次解引用，防止Rest时错误标记
 	data.UnRef()
 	select {
 	case pool.C <- data: