From 75d5790ee125e42cb6b9824b833b08765a01f5fe Mon Sep 17 00:00:00 2001
From: _ov4 <ov4@ov4.org>
Date: Fri, 18 Sep 2026 13:30:25 +0000
Subject: add T_raw_mem for RAII raw memory

---
 include/memory.h | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 include/memory.h

diff --git a/include/memory.h b/include/memory.h
new file mode 100644
index 0000000..6cf4536
--- /dev/null
+++ b/include/memory.h
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <string>
+
+namespace ov4
+{
+
+template <typename T>
+class T_raw_mem
+{
+
+public:
+
+    void *_p;
+    std::size_t _len;
+
+    explicit T_raw_mem(std::size_t size)
+    {
+        _p = operator new(size);
+        _len = size;
+    }
+
+    ~T_raw_mem()
+    {
+        operator delete(_p);
+    }
+
+    T *get() const noexcept
+    {
+        return static_cast<T*>(_p);
+    }
+
+    std::size_t get_size() const noexcept
+    {
+        return len;
+    }
+
+    // COPY is not allowed
+    T_raw_mem(const T_raw_mem&) = delete;
+    T_raw_mem& operator=(const T_raw_mem&) = delete;
+
+    // MOVE constructor
+    T_raw_mem(T_raw_mem &&x) noexcept
+        : p(std::exchange(x._p, nullptr)), slen(std::exchange(x._len, 0))
+    { /* empty */ }
+
+    T_raw_mem& operator=(T_raw_mem &&x) noexcept
+    {
+        // if they are same
+        // release itself, which is not expected
+        if (this != &x)
+        {
+            // consider statement: y = x;
+            // release memory of y (if exist)
+            operator delete(_p);
+
+            // and then move
+            _p = std::exchange(x._p, nullptr);
+            _len = std::exchange(x._len, 0);
+        }
+
+        return *this;
+    }
+
+};
+
+}
-- 
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