1 /*
   2  * Copyright (c) 2007, 2013, 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_SERVICES_PSMEMORYPOOL_HPP
  26 #define SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
  27 
  28 #include "utilities/macros.hpp"
  29 #if INCLUDE_ALL_GCS
  30 #include "gc_implementation/parallelScavenge/psOldGen.hpp"
  31 #include "gc_implementation/parallelScavenge/psYoungGen.hpp"
  32 #include "gc_implementation/shared/mutableSpace.hpp"
  33 #include "memory/defNewGeneration.hpp"
  34 #include "memory/heap.hpp"
  35 #include "memory/space.hpp"
  36 #include "services/memoryPool.hpp"
  37 #include "services/memoryUsage.hpp"
  38 #endif // INCLUDE_ALL_GCS
  39 
  40 class PSGenerationPool : public CollectedMemoryPool {
  41 private:
  42   PSOldGen* _gen;
  43 
  44 public:
  45   PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold);
  46 
  47   MemoryUsage get_memory_usage();
  48   size_t used_in_bytes()              { return _gen->used_in_bytes(); }
  49   size_t max_size() const             { return _gen->reserved().byte_size(); }
  50 };
  51 
  52 class EdenMutableSpacePool : public CollectedMemoryPool {
  53 private:
  54   PSYoungGen*   _gen;
  55   MutableSpace* _space;
  56 
  57 public:
  58   EdenMutableSpacePool(PSYoungGen* gen,
  59                        MutableSpace* space,
  60                        const char* name,
  61                        PoolType type,
  62                        bool support_usage_threshold);
  63 
  64   MutableSpace* space()                     { return _space; }
  65   MemoryUsage get_memory_usage();
  66   size_t used_in_bytes()                    { return space()->used_in_bytes(); }
  67   size_t max_size() const {
  68     // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces
  69     return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes();
  70   }
  71 };
  72 
  73 class SurvivorMutableSpacePool : public CollectedMemoryPool {
  74 private:
  75   PSYoungGen*   _gen;
  76 
  77 public:
  78   SurvivorMutableSpacePool(PSYoungGen* gen,
  79                            const char* name,
  80                            PoolType type,
  81                            bool support_usage_threshold);
  82 
  83   MemoryUsage get_memory_usage();
  84 
  85   size_t used_in_bytes() {
  86     return _gen->from_space()->used_in_bytes();
  87   }
  88   size_t committed_in_bytes() {
  89     return _gen->from_space()->capacity_in_bytes();
  90   }
  91   size_t max_size() const {
  92     // Return current committed size of the from-space
  93     return _gen->from_space()->capacity_in_bytes();
  94   }
  95 };
  96 
  97 #endif // SHARE_VM_SERVICES_PSMEMORYPOOL_HPP