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 class G1HeapSummary;
  82 
  83 class GCHeapSummaryVisitor {
  84  public:
  85   virtual void visit(const GCHeapSummary* heap_summary) const = 0;
  86   virtual void visit(const PSHeapSummary* heap_summary) const {}
  87   virtual void visit(const G1HeapSummary* heap_summary) const {}
  88 };
  89 
  90 class GCHeapSummary : public StackObj {
  91   VirtualSpaceSummary _heap;
  92   size_t _used;
  93 
  94  public:
  95    GCHeapSummary() :
  96        _heap(), _used(0) { }
  97    GCHeapSummary(VirtualSpaceSummary& heap_space, size_t used) :
  98        _heap(heap_space), _used(used) { }
  99 
 100   const VirtualSpaceSummary& heap() const { return _heap; }
 101   size_t used() const { return _used; }
 102 
 103    virtual void accept(GCHeapSummaryVisitor* visitor) const {
 104      visitor->visit(this);
 105    }
 106 };
 107 
 108 class PSHeapSummary : public GCHeapSummary {
 109   VirtualSpaceSummary  _old;
 110   SpaceSummary         _old_space;
 111   VirtualSpaceSummary  _young;
 112   SpaceSummary         _eden;
 113   SpaceSummary         _from;
 114   SpaceSummary         _to;
 115  public:
 116    PSHeapSummary(VirtualSpaceSummary& heap_space, size_t heap_used, VirtualSpaceSummary old, SpaceSummary old_space, VirtualSpaceSummary young, SpaceSummary eden, SpaceSummary from, SpaceSummary to) :
 117        GCHeapSummary(heap_space, heap_used), _old(old), _old_space(old_space), _young(young), _eden(eden), _from(from), _to(to) { }
 118    const VirtualSpaceSummary& old() const { return _old; }
 119    const SpaceSummary& old_space() const { return _old_space; }
 120    const VirtualSpaceSummary& young() const { return _young; }
 121    const SpaceSummary& eden() const { return _eden; }
 122    const SpaceSummary& from() const { return _from; }
 123    const SpaceSummary& to() const { return _to; }
 124 
 125    virtual void accept(GCHeapSummaryVisitor* visitor) const {
 126      visitor->visit(this);
 127    }
 128 };
 129 
 130 class G1HeapSummary : public GCHeapSummary {
 131   size_t  _edenUsed;
 132   size_t  _edenCapacity;
 133   size_t  _survivorUsed;
 134   uint    _numberOfRegions;
 135  public:
 136    G1HeapSummary(VirtualSpaceSummary& heap_space, size_t heap_used, size_t edenUsed, size_t edenCapacity, size_t survivorUsed, uint numberOfRegions) :
 137       GCHeapSummary(heap_space, heap_used), _edenUsed(edenUsed), _edenCapacity(edenCapacity), _survivorUsed(survivorUsed), _numberOfRegions(numberOfRegions) { }
 138    const size_t edenUsed() const { return _edenUsed; }
 139    const size_t edenCapacity() const { return _edenCapacity; }
 140    const size_t survivorUsed() const { return _survivorUsed; }
 141    const uint   numberOfRegions() const { return _numberOfRegions; }
 142 
 143    virtual void accept(GCHeapSummaryVisitor* visitor) const {
 144      visitor->visit(this);
 145    }
 146 };
 147 
 148 class MetaspaceSummary : public StackObj {
 149   size_t _capacity_until_GC;
 150   MetaspaceSizes _meta_space;
 151   MetaspaceSizes _data_space;
 152   MetaspaceSizes _class_space;
 153   MetaspaceChunkFreeListSummary _metaspace_chunk_free_list_summary;
 154   MetaspaceChunkFreeListSummary _class_chunk_free_list_summary;
 155 
 156  public:
 157   MetaspaceSummary() :
 158     _capacity_until_GC(0),
 159     _meta_space(),
 160     _data_space(),
 161     _class_space(),
 162     _metaspace_chunk_free_list_summary(),
 163     _class_chunk_free_list_summary()
 164   {}
 165   MetaspaceSummary(size_t capacity_until_GC,
 166                    const MetaspaceSizes& meta_space,
 167                    const MetaspaceSizes& data_space,
 168                    const MetaspaceSizes& class_space,
 169                    const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary,
 170                    const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary) :
 171     _capacity_until_GC(capacity_until_GC),
 172     _meta_space(meta_space),
 173     _data_space(data_space),
 174     _class_space(class_space),
 175     _metaspace_chunk_free_list_summary(metaspace_chunk_free_list_summary),
 176     _class_chunk_free_list_summary(class_chunk_free_list_summary)
 177   {}
 178 
 179   size_t capacity_until_GC() const { return _capacity_until_GC; }
 180   const MetaspaceSizes& meta_space() const { return _meta_space; }
 181   const MetaspaceSizes& data_space() const { return _data_space; }
 182   const MetaspaceSizes& class_space() const { return _class_space; }
 183 
 184   const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary() const {
 185     return _metaspace_chunk_free_list_summary;
 186   }
 187 
 188   const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary() const {
 189     return _class_chunk_free_list_summary;
 190   }
 191 
 192 };
 193 
 194 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCHEAPSUMMARY_HPP
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