1 /*
   2  * Copyright (c) 2017, 2019, 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_VMSTRUCTS_Z_HPP
  25 #define SHARE_GC_Z_VMSTRUCTS_Z_HPP
  26 
  27 #include "gc/z/zAddressRangeMap.hpp"
  28 #include "gc/z/zCollectedHeap.hpp"

  29 #include "gc/z/zHeap.hpp"
  30 #include "gc/z/zPageAllocator.hpp"
  31 #include "gc/z/zPhysicalMemory.hpp"
  32 #include "utilities/macros.hpp"
  33 
  34 // Expose some ZGC globals to the SA agent.
  35 class ZGlobalsForVMStructs {
  36   static ZGlobalsForVMStructs _instance;
  37 
  38 public:
  39   static ZGlobalsForVMStructs* _instance_p;
  40 
  41   ZGlobalsForVMStructs();
  42 
  43   uint32_t* _ZGlobalPhase;
  44 
  45   uint32_t* _ZGlobalSeqNum;
  46 
  47   uintptr_t* _ZAddressGoodMask;
  48   uintptr_t* _ZAddressBadMask;
  49   uintptr_t* _ZAddressWeakBadMask;
  50 
  51   const int* _ZObjectAlignmentSmallShift;
  52   const int* _ZObjectAlignmentSmall;
  53 };
  54 
  55 typedef ZAddressRangeMap<ZPageTableEntry, ZGranuleSizeShift> ZAddressRangeMapForPageTable;
  56 
  57 #define VM_STRUCTS_ZGC(nonstatic_field, volatile_nonstatic_field, static_field)                      \
  58   static_field(ZGlobalsForVMStructs,            _instance_p,          ZGlobalsForVMStructs*)         \
  59   nonstatic_field(ZGlobalsForVMStructs,         _ZGlobalPhase,        uint32_t*)                     \
  60   nonstatic_field(ZGlobalsForVMStructs,         _ZGlobalSeqNum,       uint32_t*)                     \
  61   nonstatic_field(ZGlobalsForVMStructs,         _ZAddressGoodMask,    uintptr_t*)                    \
  62   nonstatic_field(ZGlobalsForVMStructs,         _ZAddressBadMask,     uintptr_t*)                    \
  63   nonstatic_field(ZGlobalsForVMStructs,         _ZAddressWeakBadMask, uintptr_t*)                    \
  64   nonstatic_field(ZGlobalsForVMStructs,         _ZObjectAlignmentSmallShift, const int*)             \
  65   nonstatic_field(ZGlobalsForVMStructs,         _ZObjectAlignmentSmall, const int*)                  \
  66                                                                                                      \
  67   nonstatic_field(ZCollectedHeap,               _heap,                ZHeap)                         \
  68                                                                                                      \
  69   nonstatic_field(ZHeap,                        _page_allocator,      ZPageAllocator)                \
  70   nonstatic_field(ZHeap,                        _pagetable,           ZPageTable)                    \
  71                                                                                                      \
  72   nonstatic_field(ZPage,                        _type,                const uint8_t)                 \
  73   nonstatic_field(ZPage,                        _seqnum,              uint32_t)                      \
  74   nonstatic_field(ZPage,                        _virtual,             const ZVirtualMemory)          \
  75   volatile_nonstatic_field(ZPage,               _top,                 uintptr_t)                     \
  76   volatile_nonstatic_field(ZPage,               _refcount,            uint32_t)                      \
  77   nonstatic_field(ZPage,                        _forwarding,          ZForwardingTable)              \
  78                                                                                                      \
  79   nonstatic_field(ZPageAllocator,               _physical,            ZPhysicalMemoryManager)        \
  80   nonstatic_field(ZPageAllocator,               _used,                size_t)                        \
  81                                                                                                      \
  82   nonstatic_field(ZPageTable,                   _map,                 ZAddressRangeMapForPageTable)  \
  83                                                                                                      \
  84   nonstatic_field(ZAddressRangeMapForPageTable, _map,                 ZPageTableEntry* const)        \
  85                                                                                                      \
  86   nonstatic_field(ZVirtualMemory,                _start,              uintptr_t)                     \
  87   nonstatic_field(ZVirtualMemory,                _end,                uintptr_t)                     \
  88                                                                                                      \
  89   nonstatic_field(ZForwardingTable,              _table,              ZForwardingTableEntry*)        \
  90   nonstatic_field(ZForwardingTable,              _size,               size_t)                        \
  91                                                                                                      \
  92   nonstatic_field(ZPhysicalMemoryManager,        _max_capacity,       const size_t)                  \
  93   nonstatic_field(ZPhysicalMemoryManager,        _capacity,           size_t)
  94 
  95 #define VM_INT_CONSTANTS_ZGC(declare_constant, declare_constant_with_value)                          \
  96   declare_constant(ZPhaseRelocate)                                                                   \
  97   declare_constant(ZPageTypeSmall)                                                                   \
  98   declare_constant(ZPageTypeMedium)                                                                  \
  99   declare_constant(ZPageTypeLarge)                                                                   \
 100   declare_constant(ZObjectAlignmentMediumShift)                                                      \
 101   declare_constant(ZObjectAlignmentLargeShift)
 102 
 103 #define VM_LONG_CONSTANTS_ZGC(declare_constant)                                                      \
 104   declare_constant(ZGranuleSizeShift)                                                                \
 105   declare_constant(ZPageSizeSmallShift)                                                              \
 106   declare_constant(ZPageSizeMediumShift)                                                             \
 107   declare_constant(ZAddressOffsetShift)                                                              \
 108   declare_constant(ZAddressOffsetBits)                                                               \
 109   declare_constant(ZAddressOffsetMask)                                                               \
 110   declare_constant(ZAddressOffsetMax)                                                                \
 111   declare_constant(ZAddressSpaceStart)
 112 
 113 #define VM_TYPES_ZGC(declare_type, declare_toplevel_type, declare_integer_type)                      \
 114   declare_toplevel_type(ZGlobalsForVMStructs)                                                        \
 115   declare_type(ZCollectedHeap, CollectedHeap)                                                        \
 116   declare_toplevel_type(ZHeap)                                                                       \
 117   declare_toplevel_type(ZPage)                                                                       \
 118   declare_toplevel_type(ZPageAllocator)                                                              \
 119   declare_toplevel_type(ZPageTable)                                                                  \
 120   declare_toplevel_type(ZPageTableEntry)                                                             \
 121   declare_toplevel_type(ZAddressRangeMapForPageTable)                                                \
 122   declare_toplevel_type(ZVirtualMemory)                                                              \
 123   declare_toplevel_type(ZForwardingTable)                                                            \
 124   declare_toplevel_type(ZForwardingTableEntry)                                                       \
 125   declare_toplevel_type(ZPhysicalMemoryManager)
 126 
 127 #endif // SHARE_GC_Z_VMSTRUCTS_Z_HPP
--- EOF ---