diff --git a/tests/util.h b/tests/util.h
index ebeadeb..16f2ba2 100644
--- a/tests/util.h
+++ b/tests/util.h
@@ -19,9 +19,19 @@
 #ifndef __TESTS_UTIL_H__
 #define __TESTS_UTIL_H__
 
+typedef void* cpucounter_t;
+
 void startCpuCounter(void);
 void endCpuCounter(void);
 
 double getCpuCounter(void);
 
+cpucounter_t newCpuCounter(void);
+void freeCpuCounter(cpucounter_t c);
+
+void startCpuCounter(cpucounter_t c);
+void endCpuCounter(cpucounter_t c);
+
+double getCpuCounter(cpucounter_t c);
+
 #endif