--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/parallel/psMemoryPool.hpp	Thu Nov 30 13:40:07 2017 +0100
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2007, 2017, 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_VM_SERVICES_PSMEMORYPOOL_HPP
+#define SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
+
+#include "gc/parallel/mutableSpace.hpp"
+#include "gc/parallel/psOldGen.hpp"
+#include "gc/parallel/psYoungGen.hpp"
+#include "services/memoryPool.hpp"
+#include "services/memoryUsage.hpp"
+
+class PSGenerationPool : public CollectedMemoryPool {
+private:
+  PSOldGen* _old_gen;
+
+public:
+  PSGenerationPool(PSOldGen* pool, const char* name, bool support_usage_threshold);
+
+  MemoryUsage get_memory_usage();
+  size_t used_in_bytes() { return _old_gen->used_in_bytes(); }
+  size_t max_size() const { return _old_gen->reserved().byte_size(); }
+};
+
+class EdenMutableSpacePool : public CollectedMemoryPool {
+private:
+  PSYoungGen*   _young_gen;
+  MutableSpace* _space;
+
+public:
+  EdenMutableSpacePool(PSYoungGen* young_gen,
+                       MutableSpace* space,
+                       const char* name,
+                       bool support_usage_threshold);
+
+  MutableSpace* space()                     { return _space; }
+  MemoryUsage get_memory_usage();
+  size_t used_in_bytes()                    { return space()->used_in_bytes(); }
+  size_t max_size() const {
+    // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces
+    return _young_gen->max_size() - _young_gen->from_space()->capacity_in_bytes() - _young_gen->to_space()->capacity_in_bytes();
+  }
+};
+
+class SurvivorMutableSpacePool : public CollectedMemoryPool {
+private:
+  PSYoungGen*   _young_gen;
+
+public:
+  SurvivorMutableSpacePool(PSYoungGen* young_gen,
+                           const char* name,
+                           bool support_usage_threshold);
+
+  MemoryUsage get_memory_usage();
+
+  size_t used_in_bytes() {
+    return _young_gen->from_space()->used_in_bytes();
+  }
+  size_t committed_in_bytes() {
+    return _young_gen->from_space()->capacity_in_bytes();
+  }
+  size_t max_size() const {
+    // Return current committed size of the from-space
+    return _young_gen->from_space()->capacity_in_bytes();
+  }
+};
+
+#endif // SHARE_VM_SERVICES_PSMEMORYPOOL_HPP