1 files changed, 7 insertions, 1 deletions
diff --git a/mmss/now.hpp b/mmss/now.hpp
index 0f2e2fe..9b14127 100644
--- a/mmss/now.hpp
+++ b/mmss/now.hpp
@@ -34,11 +34,17 @@
 namespace MMSS {
 
 class now_t {
-public:
+private:
 	uint64_t time;
 
+protected:
 	now_t() : time(0) {}
 
+	void advance(uint64_t d) {
+		time += d;
+	}
+
+public:
 	uint64_t now() const {
 		return time;
 	}