--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/memPtr.cpp	Thu Jun 28 17:03:16 2012 -0400
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2012, 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 "services/memPtr.hpp"
+#include "services/memTracker.hpp"
+
+volatile jint SequenceGenerator::_seq_number = 1;
+DEBUG_ONLY(jint SequenceGenerator::_max_seq_number = 1;)
+DEBUG_ONLY(volatile unsigned long SequenceGenerator::_generation = 0;)
+
+jint SequenceGenerator::next() {
+  jint seq = Atomic::add(1, &_seq_number);
+  if (seq < 0) {
+    MemTracker::shutdown(MemTracker::NMT_sequence_overflow);
+  }
+  assert(seq > 0, "counter overflow");
+  DEBUG_ONLY(_max_seq_number = (seq > _max_seq_number) ? seq : _max_seq_number;)
+  return seq;
+}
+
+
+
+bool VMMemRegion::contains(const VMMemRegion* mr) const {
+  assert(base() != 0, "no base address");
+  assert(size() != 0 || committed_size() != 0,
+    "no range");
+  address base_addr = base();
+  address end_addr = base_addr +
+    (is_reserve_record()? reserved_size(): committed_size());
+  if (mr->is_reserve_record()) {
+    if (mr->base() == base_addr && mr->size() == size()) {
+      // the same range
+      return true;
+    }
+    return false;
+  } else if (mr->is_commit_record() || mr->is_uncommit_record()) {
+    assert(mr->base() != 0 && mr->committed_size() > 0,
+      "bad record");
+    return (mr->base() >= base_addr &&
+      (mr->base() + mr->committed_size()) <= end_addr);
+  } else if (mr->is_type_tagging_record()) {
+    assert(mr->base() != 0, "no base");
+    return mr->base() == base_addr;
+  } else if (mr->is_release_record()) {
+    assert(mr->base() != 0 && mr->size() > 0,
+      "bad record");
+    return (mr->base() == base_addr && mr->size() == size());
+  } else {
+    assert(false, "what happened?");
+    return false;
+  }
+}