--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/services/stathist.hpp	Fri Sep 07 07:52:35 2018 +0200
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, SAP SE.
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef HOTSPOT_SHARE_SERVICES_STATHIST_HPP
+#define HOTSPOT_SHARE_SERVICES_STATHIST_HPP
+
+#include "utilities/globalDefinitions.hpp"
+
+class outputStream;
+
+namespace StatisticsHistory {
+
+  bool initialize();
+  void cleanup();
+
+  struct print_info_t {
+    bool raw;
+    bool cvs;
+    // Omit printing a legend.
+    bool no_legend;
+    // Normally, when we print a report, we sample the current values too and print it atop of the table.
+    // We may want to avoid that, e.g. during error handling.
+    bool avoid_sampling;
+
+    size_t scale;
+  };
+
+  // If no print info is given (print_info == NULL), we print with default settings
+  void print_report(outputStream* st, const print_info_t* print_info = NULL);
+
+  // These are counters for the statistics history. Ideally, they would live
+  // inside their thematical homes, e.g. thread.cpp or classLoaderDataGraph.cpp,
+  // however since this is unlikely ever to be brought upstream we keep this separate
+  // to easy maintenance.
+
+  namespace counters {
+    void inc_classes_loaded(size_t count);
+    void inc_classes_unloaded(size_t count);
+    void inc_threads_created(size_t count);
+  };
+
+};
+
+#endif /* HOTSPOT_SHARE_SERVICES_STATHIST_HPP */