From 7db9159a7db5a2f4640e1f2dbb4d457860de05a7 Mon Sep 17 00:00:00 2001
From: hyzboy <hyzboy@gmail.com>
Date: Thu, 21 Mar 2024 01:58:08 +0800
Subject: [PATCH] added DataStackPool<>

---
 inc/hgl/type/DataStackPool.h | 56 ++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 inc/hgl/type/DataStackPool.h

diff --git a/inc/hgl/type/DataStackPool.h b/inc/hgl/type/DataStackPool.h
new file mode 100644
index 0000000..460fed1
--- /dev/null
+++ b/inc/hgl/type/DataStackPool.h
@@ -0,0 +1,56 @@
+#pragma once
+
+#include<hgl/type/DataArray.h>
+#include<hgl/type/SeriesPool.h>
+
+namespace hgl
+{
+    /**
+     * 数据堆栈池(一种简单的数据池结构，不支持动态调整大小)
+     */
+    template<typename T> class DataStackPool
+    {
+    protected:
+
+        T *data_array;                      ///<数据区
+        T *end;                             ///<结束指针
+        SeriesInt series;                   ///<序号池
+
+    public:
+
+        DataStackPool(const int max_count):series(max_count)
+        {
+            data_array=hgl_zero_new<T>(max_count);
+
+            end=data_array+max_count;
+        }
+
+        ~DataStackPool()
+        {
+            delete[] data_array;
+        }
+
+        T *Acquire()                       ///<请求一个数据
+        {
+            int pos;
+
+            if(!series.Acquire(&pos))
+                return nullptr;
+
+            return data_array+pos;
+        }
+
+        bool Release(T *obj)                ///<释放一个数据
+        {
+            if(!obj)
+                return(false);
+
+            if(obj<data_array||obj>=end)
+                return(false);
+
+            const int pos=obj-data_array;
+
+            return series.Release(pos);
+        }
+    };//template<typename T> class DataStackPool
+}//namespace