1 files changed, 4 insertions, 12 deletions
diff --git a/src/corelib/tools/qtimestamp.h b/src/corelib/tools/qtimestamp.h
index f923cd4..1e913f0 100644
--- a/src/corelib/tools/qtimestamp.h
+++ b/src/corelib/tools/qtimestamp.h
@@ -56,20 +56,12 @@ public:
     static bool isMonotonic();
 
     void start();
-    qint64 restart()
-    {
-        qint64 r = elapsed();
-        start();
-        return r;
-    }
+    qint64 restart();
+    void invalidate();
+    bool isValid() const;
 
     qint64 elapsed() const;
-    bool hasExpired(qint64 timeout) const
-    {
-        // if timeout is -1, quint64(timeout) is LLINT_MAX, so this will be
-        // considered as never expired
-        return quint64(elapsed()) > quint64(timeout);
-    }
+    bool hasExpired(qint64 timeout) const;
 
     qint64 msecsTo(const QTimestamp &other) const;
     void addMSecs(int ms);