Added implementations

include/mem.h

@@ -0,0 +1,35 @@
+#ifndef MEM_INCLUDED
+#define MEM_INCLUDED
+
+#include "except.h" // Exceptions
+
+#include <stddef.h> // size_t
+#define MEM_KB(x) ((size_t)(x) * 1024ULL)
+#define MEM_MB(x) ((size_t)(x) * 1024ULL * 1024ULL)
+#define MEM_GB(x) ((size_t)(x) * 1024ULL * 1024ULL * 1024ULL)
+#define MEM_SIZE(x)    (ptrdiff_t)sizeof(x)
+#define MEM_COUNT(a)   (MEM_SIZE(a) / MEM_SIZE(*(a)))
+#define MEM_LEN(s)     (MEM_COUNT(s) - 1)
+
+
+/* Default behavior is to throw exceptions and zero out memory*/
+enum MemFlags {
+    NOZERO       = 1 << 0,  /* 0001 */
+    SOFT_FAIL    = 1 << 1,  /* 0010 */
+    HARD_FAIL    = 1 << 2,  /* 0100 */
+};
+
+extern const Exception OOM; // Out of memory
+
+extern void *mem_alloc (int flags, size_t nbytes, const char *file, int line);
+extern void mem_free(void *ptr, const char *file, int line);
+extern void *mem_resize(int flags, void *ptr, size_t nbytes, 
+        const char *file, int line);
+
+#define ALLOC(flags, nbytes)  mem_alloc((flags), (nbytes), __FILE__, __LINE__)
+#define FREE(ptr) ((void)(mem_free((ptr), __FILE__, __LINE__), (ptr) = 0))
+#define RESIZE(flags, ptr, nbytes) 	((ptr) = mem_resize((flags), (ptr), \
+	(nbytes), __FILE__, __LINE__))
+
+
+#endif