--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/memory/metaspace/classLoaderMetaspace.hpp	Mon Jul 08 22:30:19 2019 +0200
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2018, 2019, 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.
+ *
+ */
+
+#ifndef SHARE_MEMORY_METASPACE_CHUNKMANAGER_HPP
+#define SHARE_MEMORY_METASPACE_CHUNKMANAGER_HPP
+
+#include "memory/allocation.hpp"
+#include "memory/metaspace/metaspaceCommon.hpp"
+#include "memory/metaspace/spaceManager.hpp"
+
+namespace metaspace {
+
+
+class ClassLoaderMetaspace : public CHeapObj<mtClass> {
+
+  // The CLD lock.
+  Mutex* const _lock;
+
+  const Metaspace::MetaspaceType _space_type;
+
+  metaspace::SpaceManager* _non_class_space_manager;
+  metaspace::SpaceManager* _class_space_manager;
+
+  Mutex* lock() const                                       { return _lock; }
+  metaspace::SpaceManager* non_class_space_manager() const  { return _non_class_space_manager; }
+  metaspace::SpaceManager* class_space_manager() const      { return _class_space_manager; }
+
+  metaspace::SpaceManager* get_space_manager(bool is_class) {
+    return is_class ? class_space_manager() : non_class_space_manager();
+  }
+
+public:
+
+  ClassLoaderMetaspace(Mutex* lock, Metaspace::MetaspaceType space_type);
+
+  ~ClassLoaderMetaspace();
+
+  // Allocate word_size words from Metaspace.
+  MetaWord* allocate(size_t word_size, bool is_class);
+
+  // Attempt to expand the GC threshold to be good for at least another word_size words
+  // and allocate. Returns NULL if failure. Used during Metaspace GC.
+  MetaWord* expand_GC_threshold_and_allocate(size_t word_size, bool is_class);
+
+  // Prematurely returns a metaspace allocation to the _block_freelists
+  // because it is not needed anymore.
+  void deallocate(MetaWord* ptr, size_t word_size, bool is_class);
+
+
+  DEBUG_ONLY(void verify(bool slow) const;)
+
+};
+
+} // namespace metaspace
+
+#endif // SHARE_MEMORY_METASPACE_CHUNKMANAGER_HPP