--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/memory/metaspaceCounters.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
+ * 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "memory/metaspaceCounters.hpp"
+#include "memory/resourceArea.hpp"
+#include "runtime/globals.hpp"
+#include "runtime/perfData.hpp"
+#include "utilities/exceptions.hpp"
+
+class MetaspacePerfCounters: public CHeapObj<mtInternal> {
+  friend class VMStructs;
+  PerfVariable*      _capacity;
+  PerfVariable*      _used;
+  PerfVariable*      _max_capacity;
+
+  PerfVariable* create_variable(const char *ns, const char *name, size_t value, TRAPS) {
+    const char *path = PerfDataManager::counter_name(ns, name);
+    return PerfDataManager::create_variable(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
+  }
+
+  void create_constant(const char *ns, const char *name, size_t value, TRAPS) {
+    const char *path = PerfDataManager::counter_name(ns, name);
+    PerfDataManager::create_constant(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
+  }
+
+ public:
+  MetaspacePerfCounters(const char* ns, size_t min_capacity, size_t curr_capacity, size_t max_capacity, size_t used) {
+    EXCEPTION_MARK;
+    ResourceMark rm;
+
+    create_constant(ns, "minCapacity", min_capacity, THREAD);
+    _capacity = create_variable(ns, "capacity", curr_capacity, THREAD);
+    _max_capacity = create_variable(ns, "maxCapacity", max_capacity, THREAD);
+    _used = create_variable(ns, "used", used, THREAD);
+  }
+
+  void update(size_t capacity, size_t max_capacity, size_t used) {
+    _capacity->set_value(capacity);
+    _max_capacity->set_value(max_capacity);
+    _used->set_value(used);
+  }
+};
+
+MetaspacePerfCounters* MetaspaceCounters::_perf_counters = NULL;
+
+size_t MetaspaceCounters::used() {
+  return MetaspaceAux::used_bytes();
+}
+
+size_t MetaspaceCounters::capacity() {
+  return MetaspaceAux::committed_bytes();
+}
+
+size_t MetaspaceCounters::max_capacity() {
+  return MetaspaceAux::reserved_bytes();
+}
+
+void MetaspaceCounters::initialize_performance_counters() {
+  if (UsePerfData) {
+    assert(_perf_counters == NULL, "Should only be initialized once");
+
+    size_t min_capacity = 0;
+    _perf_counters = new MetaspacePerfCounters("metaspace", min_capacity,
+                                               capacity(), max_capacity(), used());
+  }
+}
+
+void MetaspaceCounters::update_performance_counters() {
+  if (UsePerfData) {
+    assert(_perf_counters != NULL, "Should be initialized");
+
+    _perf_counters->update(capacity(), max_capacity(), used());
+  }
+}
+
+MetaspacePerfCounters* CompressedClassSpaceCounters::_perf_counters = NULL;
+
+size_t CompressedClassSpaceCounters::used() {
+  return MetaspaceAux::used_bytes(Metaspace::ClassType);
+}
+
+size_t CompressedClassSpaceCounters::capacity() {
+  return MetaspaceAux::committed_bytes(Metaspace::ClassType);
+}
+
+size_t CompressedClassSpaceCounters::max_capacity() {
+  return MetaspaceAux::reserved_bytes(Metaspace::ClassType);
+}
+
+void CompressedClassSpaceCounters::update_performance_counters() {
+  if (UsePerfData && UseCompressedClassPointers) {
+    assert(_perf_counters != NULL, "Should be initialized");
+
+    _perf_counters->update(capacity(), max_capacity(), used());
+  }
+}
+
+void CompressedClassSpaceCounters::initialize_performance_counters() {
+  if (UsePerfData) {
+    assert(_perf_counters == NULL, "Should only be initialized once");
+    const char* ns = "compressedclassspace";
+
+    if (UseCompressedClassPointers) {
+      size_t min_capacity = 0;
+      _perf_counters = new MetaspacePerfCounters(ns, min_capacity, capacity(),
+                                                 max_capacity(), used());
+    } else {
+      _perf_counters = new MetaspacePerfCounters(ns, 0, 0, 0, 0);
+    }
+  }
+}