diff -r 59656cd16411 -r b9a6af0ae41a src/ucx/ucx.h
--- a/src/ucx/ucx.h	Mon Apr 06 16:36:25 2015 +0200
+++ b/src/ucx/ucx.h	Fri Oct 16 19:23:49 2015 +0200
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2013 Olaf Wintermann. All rights reserved.
+ * Copyright 2015 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -37,10 +37,10 @@
 #define	UCX_H
 
 /** Major UCX version as integer constant. */
-#define UCX_VERSION_MAJOR   1
+#define UCX_VERSION_MAJOR   0
 
 /** Minor UCX version as integer constant. */
-#define UCX_VERSION_MINOR   0
+#define UCX_VERSION_MINOR   9
 
 /** The UCX version in format [major].[minor] */
 #define UCX_VERSION UCX_VERSION_MAJOR.UCX_VERSION_MINOR
@@ -70,6 +70,14 @@
 /** Pointless in C. */
 #define UCX_EXTERN
 #endif
+    
+
+/**
+ * A function pointer to a destructor function.
+ * @see ucx_mempool_setdestr()
+ * @see ucx_mempool_regdestr()
+ */
+typedef void(*ucx_destructor)(void*);
 
 /**
  * Function pointer to a compare function.