@@ -1,4 +1,34 @@
 #ifndef KImem
 #define KImem
+#include <k/type.h>
+
+typedef enum kmkind {
+	kmkind_none,
+	kmkind_heap,
+	kmkind_pool,
+	kmkind_ref,
+	kmkind_tree
+} kmkind;
+
+typedef enum kmshred {
+	kmshred_yes,
+	kmshred_no
+} kmshred;
+
+typedef struct kmcell {
+	kmkind kind;
+	sz size;
+	kmshred shred;
+	sz refs;
+	struct kmcell* src;
+	char data[];
+} kmcell;
+
+typedef struct kmptr {
+	kmkind kind;
+	kmshred shred;
+	void* ref;
+	kmcell* cell;
+} kmptr;
 
 #endif