Add a simple malloc/free unique pointer.

This should really be unique_ptr based, but I can't be arsed working
around the lack of template typedefs here.

Makefile.am

@@ -58,6 +58,8 @@ UTIL_FILES   =		\
     maths/vector.hpp  	\
     matrix.cpp		\
     matrix.hpp		\
+    memory.cpp		\
+    memory.hpp		\
     nocopy.hpp		\
     perlin.cpp		\
     perlin.hpp		\

memory.cpp

@@ -0,0 +1,20 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ * 
+ * libgim is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2011 Danny Robson <danny@nerdcruft.net>
+ */
+
+#include "memory.hpp"

memory.hpp

@@ -0,0 +1,49 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ * 
+ * libgim is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2011 Danny Robson <danny@nerdcruft.net>
+ */
+
+#ifndef __MEMORY_HPP
+#define __MEMORY_HPP
+
+template <typename T>
+class scoped_malloc {
+public:
+    scoped_malloc (T *_data):
+        m_data (_data)
+    { ; }
+
+    scoped_malloc (scoped_malloc &&rhs):
+        m_data (rhs.m_data)
+    {
+        rhs.m_data = nullptr;
+    }
+
+    ~scoped_malloc () {
+        free (m_data);
+    }
+
+          T* data (void)        { return m_data; }
+    const T* data (void) const  { return m_data; }
+
+    bool operator! (void) { return !m_data; }
+
+protected:
+    T* m_data;
+};
+
+#endif