1 /*
   2  * Copyright (c) 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 
  25 #ifndef SHARE_VM_GC_SHARED_GENMEMORYPOOLS_HPP
  26 #define SHARE_VM_GC_SHARED_GENMEMORYPOOLS_HPP
  27 
  28 #include "services/memoryPool.hpp"
  29 
  30 class ContiguousSpace;
  31 class DefNewGeneration;
  32 class Generation;
  33 
  34 class ContiguousSpacePool : public CollectedMemoryPool {
  35 private:
  36   ContiguousSpace* _space;
  37 
  38 public:
  39   ContiguousSpacePool(ContiguousSpace* space,
  40                       const char* name,
  41                       size_t max_size,
  42                       bool support_usage_threshold);
  43 
  44   ContiguousSpace* space() { return _space; }
  45   MemoryUsage get_memory_usage();
  46   size_t used_in_bytes();
  47 };
  48 
  49 class SurvivorContiguousSpacePool : public CollectedMemoryPool {
  50 private:
  51   DefNewGeneration* _young_gen;
  52 
  53 public:
  54   SurvivorContiguousSpacePool(DefNewGeneration* young_gen,
  55                               const char* name,
  56                               size_t max_size,
  57                               bool support_usage_threshold);
  58 
  59   MemoryUsage get_memory_usage();
  60 
  61   size_t used_in_bytes();
  62   size_t committed_in_bytes();
  63 };
  64 
  65 class GenerationPool : public CollectedMemoryPool {
  66 private:
  67   Generation* _gen;
  68 public:
  69   GenerationPool(Generation* gen, const char* name, bool support_usage_threshold);
  70 
  71   MemoryUsage get_memory_usage();
  72   size_t used_in_bytes();
  73 };
  74 
  75 #endif // SHARE_VM_GC_SHARED_GENMEMORYPOOLS_HPP