1 /*
   2  * Copyright (c) 2012, 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_GC_IMPLEMENTATION_SHARED_GCHEAPSUMMARY_HPP
  26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCHEAPSUMMARY_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 #include "memory/metaspaceChunkFreeListSummary.hpp"
  30 
  31 class VirtualSpaceSummary : public StackObj {
  32   HeapWord* _start;
  33   HeapWord* _committed_end;
  34   HeapWord* _reserved_end;
  35 public:
  36   VirtualSpaceSummary() :
  37       _start(NULL), _committed_end(NULL), _reserved_end(NULL) { }
  38   VirtualSpaceSummary(HeapWord* start, HeapWord* committed_end, HeapWord* reserved_end) :
  39       _start(start), _committed_end(committed_end), _reserved_end(reserved_end) { }
  40 
  41   HeapWord* start() const { return _start; }
  42   HeapWord* committed_end() const { return _committed_end; }
  43   HeapWord* reserved_end() const { return _reserved_end; }
  44   size_t committed_size() const { return (uintptr_t)_committed_end - (uintptr_t)_start;  }
  45   size_t reserved_size() const { return (uintptr_t)_reserved_end - (uintptr_t)_start; }
  46 };
  47 
  48 class SpaceSummary : public StackObj {
  49   HeapWord* _start;
  50   HeapWord* _end;
  51   size_t    _used;
  52 public:
  53   SpaceSummary() :
  54       _start(NULL), _end(NULL), _used(0) { }
  55   SpaceSummary(HeapWord* start, HeapWord* end, size_t used) :
  56       _start(start), _end(end), _used(used) { }
  57 
  58   HeapWord* start() const { return _start; }
  59   HeapWord* end() const { return _end; }
  60   size_t used() const { return _used; }
  61   size_t size() const { return (uintptr_t)_end - (uintptr_t)_start; }
  62 };
  63 
  64 class MetaspaceSizes : public StackObj {
  65   size_t _committed;
  66   size_t _used;
  67   size_t _reserved;
  68 
  69  public:
  70   MetaspaceSizes() : _committed(0), _used(0), _reserved(0) {}
  71   MetaspaceSizes(size_t committed, size_t used, size_t reserved) :
  72     _committed(committed), _used(used), _reserved(reserved) {}
  73 
  74   size_t committed() const { return _committed; }
  75   size_t used() const { return _used; }
  76   size_t reserved() const { return _reserved; }
  77 };
  78 
  79 class GCHeapSummary;
  80 class PSHeapSummary;

  81 
  82 class GCHeapSummaryVisitor {
  83  public:
  84   virtual void visit(const GCHeapSummary* heap_summary) const = 0;
  85   virtual void visit(const PSHeapSummary* heap_summary) const {}

  86 };
  87 
  88 class GCHeapSummary : public StackObj {
  89   VirtualSpaceSummary _heap;
  90   size_t _used;
  91 
  92  public:
  93    GCHeapSummary() :
  94        _heap(), _used(0) { }
  95    GCHeapSummary(VirtualSpaceSummary& heap_space, size_t used) :
  96        _heap(heap_space), _used(used) { }
  97 
  98   const VirtualSpaceSummary& heap() const { return _heap; }
  99   size_t used() const { return _used; }
 100 
 101    virtual void accept(GCHeapSummaryVisitor* visitor) const {
 102      visitor->visit(this);
 103    }
 104 };
 105 
 106 class PSHeapSummary : public GCHeapSummary {
 107   VirtualSpaceSummary  _old;
 108   SpaceSummary         _old_space;
 109   VirtualSpaceSummary  _young;
 110   SpaceSummary         _eden;
 111   SpaceSummary         _from;
 112   SpaceSummary         _to;
 113  public:
 114    PSHeapSummary(VirtualSpaceSummary& heap_space, size_t heap_used, VirtualSpaceSummary old, SpaceSummary old_space, VirtualSpaceSummary young, SpaceSummary eden, SpaceSummary from, SpaceSummary to) :
 115        GCHeapSummary(heap_space, heap_used), _old(old), _old_space(old_space), _young(young), _eden(eden), _from(from), _to(to) { }
 116    const VirtualSpaceSummary& old() const { return _old; }
 117    const SpaceSummary& old_space() const { return _old_space; }
 118    const VirtualSpaceSummary& young() const { return _young; }
 119    const SpaceSummary& eden() const { return _eden; }
 120    const SpaceSummary& from() const { return _from; }
 121    const SpaceSummary& to() const { return _to; }


















 122 
 123    virtual void accept(GCHeapSummaryVisitor* visitor) const {
 124      visitor->visit(this);
 125    }
 126 };
 127 
 128 class MetaspaceSummary : public StackObj {
 129   size_t _capacity_until_GC;
 130   MetaspaceSizes _meta_space;
 131   MetaspaceSizes _data_space;
 132   MetaspaceSizes _class_space;
 133   MetaspaceChunkFreeListSummary _metaspace_chunk_free_list_summary;
 134   MetaspaceChunkFreeListSummary _class_chunk_free_list_summary;
 135 
 136  public:
 137   MetaspaceSummary() :
 138     _capacity_until_GC(0),
 139     _meta_space(),
 140     _data_space(),
 141     _class_space(),
 142     _metaspace_chunk_free_list_summary(),
 143     _class_chunk_free_list_summary()
 144   {}
 145   MetaspaceSummary(size_t capacity_until_GC,
 146                    const MetaspaceSizes& meta_space,
 147                    const MetaspaceSizes& data_space,
 148                    const MetaspaceSizes& class_space,
 149                    const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary,
 150                    const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary) :
 151     _capacity_until_GC(capacity_until_GC),
 152     _meta_space(meta_space),
 153     _data_space(data_space),
 154     _class_space(class_space),
 155     _metaspace_chunk_free_list_summary(metaspace_chunk_free_list_summary),
 156     _class_chunk_free_list_summary(class_chunk_free_list_summary)
 157   {}
 158 
 159   size_t capacity_until_GC() const { return _capacity_until_GC; }
 160   const MetaspaceSizes& meta_space() const { return _meta_space; }
 161   const MetaspaceSizes& data_space() const { return _data_space; }
 162   const MetaspaceSizes& class_space() const { return _class_space; }
 163 
 164   const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary() const {
 165     return _metaspace_chunk_free_list_summary;
 166   }
 167 
 168   const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary() const {
 169     return _class_chunk_free_list_summary;
 170   }
 171 
 172 };
 173 
 174 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCHEAPSUMMARY_HPP
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