--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/z/zAddressRangeMap.hpp Tue Jun 12 17:40:28 2018 +0200
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2017, 2018, 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_GC_Z_ZADDRESSRANGEMAP_HPP
+#define SHARE_GC_Z_ZADDRESSRANGEMAP_HPP
+
+#include "memory/allocation.hpp"
+
+template<typename T, size_t AddressRangeShift>
+class ZAddressRangeMapIterator;
+
+template <typename T, size_t AddressRangeShift>
+class ZAddressRangeMap {
+ friend class VMStructs;
+ friend class ZAddressRangeMapIterator<T, AddressRangeShift>;
+
+private:
+ T* const _map;
+
+ size_t index_for_addr(uintptr_t addr) const;
+ size_t size() const;
+
+public:
+ ZAddressRangeMap();
+ ~ZAddressRangeMap();
+
+ T get(uintptr_t addr) const;
+ void put(uintptr_t addr, T value);
+};
+
+template <typename T, size_t AddressRangeShift>
+class ZAddressRangeMapIterator : public StackObj {
+public:
+ const ZAddressRangeMap<T, AddressRangeShift>* const _map;
+ size_t _next;
+
+public:
+ ZAddressRangeMapIterator(const ZAddressRangeMap<T, AddressRangeShift>* map);
+
+ bool next(T* value);
+};
+
+#endif // SHARE_GC_Z_ZADDRESSRANGEMAP_HPP