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src/hotspot/share/gc/z/zGranuleMap.hpp

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   1 /*
   2  * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #ifndef SHARE_GC_Z_ZADDRESSRANGEMAP_HPP
  25 #define SHARE_GC_Z_ZADDRESSRANGEMAP_HPP
  26 
  27 #include "memory/allocation.hpp"
  28 
  29 template<typename T, size_t AddressRangeShift>
  30 class ZAddressRangeMapIterator;
  31 
  32 template <typename T, size_t AddressRangeShift>
  33 class ZAddressRangeMap {
  34   friend class VMStructs;
  35   friend class ZAddressRangeMapIterator<T, AddressRangeShift>;
  36 
  37 private:
  38   T* const _map;
  39 
  40   size_t index_for_addr(uintptr_t addr) const;
  41   size_t size() const;
  42 
  43 public:
  44   ZAddressRangeMap();
  45   ~ZAddressRangeMap();
  46 
  47   T get(uintptr_t addr) const;
  48   void put(uintptr_t addr, T value);
  49 };
  50 
  51 template <typename T, size_t AddressRangeShift>
  52 class ZAddressRangeMapIterator : public StackObj {
  53 public:
  54   const ZAddressRangeMap<T, AddressRangeShift>* const _map;
  55   size_t                                              _next;
  56 
  57 public:
  58   ZAddressRangeMapIterator(const ZAddressRangeMap<T, AddressRangeShift>* map);
  59 
  60   bool next(T* value);
  61 };
  62 
  63 #endif // SHARE_GC_Z_ZADDRESSRANGEMAP_HPP
   1 /*
   2  * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #ifndef SHARE_GC_Z_ZGRANULEMAP_HPP
  25 #define SHARE_GC_Z_ZGRANULEMAP_HPP
  26 
  27 #include "memory/allocation.hpp"
  28 
  29 template<typename T>
  30 class ZGranuleMapIterator;
  31 
  32 template <typename T>
  33 class ZGranuleMap {
  34   friend class VMStructs;
  35   friend class ZGranuleMapIterator<T>;
  36 
  37 private:
  38   T* const _map;
  39 
  40   size_t index_for_addr(uintptr_t addr) const;
  41   size_t size() const;
  42 
  43 public:
  44   ZGranuleMap();
  45   ~ZGranuleMap();
  46 
  47   T get(uintptr_t addr) const;
  48   void put(uintptr_t addr, T value);
  49 };
  50 
  51 template <typename T>
  52 class ZGranuleMapIterator : public StackObj {
  53 public:
  54   const ZGranuleMap<T>* const _map;
  55   size_t                      _next;
  56 
  57 public:
  58   ZGranuleMapIterator(const ZGranuleMap<T>* map);
  59 
  60   bool next(T* value);
  61 };
  62 
  63 #endif // SHARE_GC_Z_ZGRANULEMAP_HPP
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