*misc

1 files changed, 34 insertions, 0 deletions

diff --git a/Runtime/Utilities/DynamicArray.h b/Runtime/Utilities/DynamicArray.h
index e69de29..16680bc 100644
--- a/Runtime/Utilities/DynamicArray.h
+++ b/Runtime/Utilities/DynamicArray.h
@@ -0,0 +1,34 @@
+#pragma once 

+

+enum { kDynamicArrayThreshold = 64 };

+

+// 阈值之内在栈上保存，超过阈值在堆上保存，并自动释放

+template<typename T>

+class DynamicArray

+{

+public:

+    DynamicArray(int capacity)

+    {

+        if (capacity * sizeof(T) > kDynamicArrayThreshold)

+        {

+            m_Data = malloc(capacity * sizeof(T));

+        }

+        else

+        {

+            m_Data = alloca(capacity * sizeof(T));

+        }

+    }

+    ~DynamicArray()

+    {

+        delete[] m_Data;

+    }

+

+private: 

+    void* operator new(std::size_t);

+

+    T* m_Data;

+

+};

+

+//https://www.jianshu.com/p/7737dab9c32b

+//https://blog.csdn.net/WUDAIJUN/article/details/9273339
\ No newline at end of file