1 /*
   2  * Copyright (c) 2015, 2017, 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_ZPAGETABLE_HPP
  25 #define SHARE_GC_Z_ZPAGETABLE_HPP
  26 
  27 #include "gc/z/zAddressRangeMap.hpp"
  28 #include "gc/z/zGlobals.hpp"
  29 #include "gc/z/zPageTableEntry.hpp"
  30 #include "memory/allocation.hpp"
  31 
  32 class ZPage;
  33 
  34 class ZPageTable VALUE_OBJ_CLASS_SPEC {

  35   friend class ZPageTableIterator;
  36 
  37 private:
  38   ZAddressRangeMap<ZPageTableEntry, ZPageSizeMinShift> _map;
  39 
  40   ZPageTableEntry get_entry(ZPage* page) const;
  41   void put_entry(ZPage* page, ZPageTableEntry entry);
  42 
  43 public:
  44   ZPageTable();
  45 
  46   ZPageTableEntry* addr() const;
  47 
  48   ZPage* get(uintptr_t addr) const;
  49   void insert(ZPage* page);
  50   void remove(ZPage* page);
  51 
  52   bool is_relocating(uintptr_t addr) const;
  53   void set_relocating(ZPage* page);
  54   void clear_relocating(ZPage* page);

   1 /*
   2  * Copyright (c) 2015, 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_ZPAGETABLE_HPP
  25 #define SHARE_GC_Z_ZPAGETABLE_HPP
  26 
  27 #include "gc/z/zAddressRangeMap.hpp"
  28 #include "gc/z/zGlobals.hpp"
  29 #include "gc/z/zPageTableEntry.hpp"
  30 #include "memory/allocation.hpp"
  31 
  32 class ZPage;
  33 
  34 class ZPageTable VALUE_OBJ_CLASS_SPEC {
  35   friend class VMStructs;
  36   friend class ZPageTableIterator;
  37 
  38 private:
  39   ZAddressRangeMap<ZPageTableEntry, ZPageSizeMinShift> _map;
  40 
  41   ZPageTableEntry get_entry(ZPage* page) const;
  42   void put_entry(ZPage* page, ZPageTableEntry entry);
  43 
  44 public:
  45   ZPageTable();
  46 
  47   ZPageTableEntry* addr() const;
  48 
  49   ZPage* get(uintptr_t addr) const;
  50   void insert(ZPage* page);
  51   void remove(ZPage* page);
  52 
  53   bool is_relocating(uintptr_t addr) const;
  54   void set_relocating(ZPage* page);
  55   void clear_relocating(ZPage* page);