--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/g1/g1MemoryPool.cpp	Sat Dec 02 06:51:10 2017 +0100
@@ -0,0 +1,88 @@
+/*
+ * 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc/g1/g1CollectedHeap.hpp"
+#include "gc/g1/g1MemoryPool.hpp"
+#include "gc/g1/heapRegion.hpp"
+
+G1MemoryPoolSuper::G1MemoryPoolSuper(G1CollectedHeap* g1h,
+                                     const char* name,
+                                     size_t init_size,
+                                     size_t max_size,
+                                     bool support_usage_threshold) :
+  _g1mm(g1h->g1mm()), CollectedMemoryPool(name,
+                                          init_size,
+                                          max_size,
+                                          support_usage_threshold) {
+  assert(UseG1GC, "sanity");
+}
+
+G1EdenPool::G1EdenPool(G1CollectedHeap* g1h) :
+  G1MemoryPoolSuper(g1h,
+                    "G1 Eden Space",
+                    g1h->g1mm()->eden_space_committed(), /* init_size */
+                    _undefined_max,
+                    false /* support_usage_threshold */) { }
+
+MemoryUsage G1EdenPool::get_memory_usage() {
+  size_t initial_sz = initial_size();
+  size_t max_sz     = max_size();
+  size_t used       = used_in_bytes();
+  size_t committed  = _g1mm->eden_space_committed();
+
+  return MemoryUsage(initial_sz, used, committed, max_sz);
+}
+
+G1SurvivorPool::G1SurvivorPool(G1CollectedHeap* g1h) :
+  G1MemoryPoolSuper(g1h,
+                    "G1 Survivor Space",
+                    g1h->g1mm()->survivor_space_committed(), /* init_size */
+                    _undefined_max,
+                    false /* support_usage_threshold */) { }
+
+MemoryUsage G1SurvivorPool::get_memory_usage() {
+  size_t initial_sz = initial_size();
+  size_t max_sz     = max_size();
+  size_t used       = used_in_bytes();
+  size_t committed  = _g1mm->survivor_space_committed();
+
+  return MemoryUsage(initial_sz, used, committed, max_sz);
+}
+
+G1OldGenPool::G1OldGenPool(G1CollectedHeap* g1h) :
+  G1MemoryPoolSuper(g1h,
+                    "G1 Old Gen",
+                    g1h->g1mm()->old_space_committed(), /* init_size */
+                    g1h->g1mm()->old_gen_max(),
+                    true /* support_usage_threshold */) { }
+
+MemoryUsage G1OldGenPool::get_memory_usage() {
+  size_t initial_sz = initial_size();
+  size_t max_sz     = max_size();
+  size_t used       = used_in_bytes();
+  size_t committed  = _g1mm->old_space_committed();
+
+  return MemoryUsage(initial_sz, used, committed, max_sz);
+}