1 /* 2 * Copyright (c) 2015, 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_ZGLOBALS_HPP 25 #define SHARE_GC_Z_ZGLOBALS_HPP 26 27 #include "utilities/globalDefinitions.hpp" 28 #include "utilities/macros.hpp" 29 #include CPU_HEADER(gc/z/zGlobals) 30 31 // Collector name 32 const char* const ZName = "The Z Garbage Collector"; 33 34 // Global phase state 35 extern uint32_t ZGlobalPhase; 36 const uint32_t ZPhaseMark = 0; 37 const uint32_t ZPhaseMarkCompleted = 1; 38 const uint32_t ZPhaseRelocate = 2; 39 40 // Global sequence number 41 extern uint32_t ZGlobalSeqNum; 42 43 // Granule shift/size 44 const size_t ZGranuleSizeShift = ZPlatformGranuleSizeShift; 45 const size_t ZGranuleSize = (size_t)1 << ZGranuleSizeShift; 46 47 // Number of heap views 48 const size_t ZHeapViews = ZPlatformHeapViews; 49 50 // Virtual memory to physical memory ratio 51 const size_t ZVirtualToPhysicalRatio = 16; // 16:1 52 53 // Page types 54 const uint8_t ZPageTypeSmall = 0; 55 const uint8_t ZPageTypeMedium = 1; 56 const uint8_t ZPageTypeLarge = 2; 57 58 // Page size shifts 59 const size_t ZPageSizeSmallShift = ZGranuleSizeShift; 60 extern size_t ZPageSizeMediumShift; 61 62 // Page sizes 63 const size_t ZPageSizeSmall = (size_t)1 << ZPageSizeSmallShift; 64 extern size_t ZPageSizeMedium; 65 66 // Object size limits 67 const size_t ZObjectSizeLimitSmall = ZPageSizeSmall / 8; // 12.5% max waste 68 extern size_t ZObjectSizeLimitMedium; 69 70 // Object alignment shifts 71 extern const int& ZObjectAlignmentSmallShift; 72 extern int ZObjectAlignmentMediumShift; 73 const int ZObjectAlignmentLargeShift = ZGranuleSizeShift; 74 75 // Object alignments 76 extern const int& ZObjectAlignmentSmall; 77 extern int ZObjectAlignmentMedium; 78 const int ZObjectAlignmentLarge = 1 << ZObjectAlignmentLargeShift; 79 80 // 81 // Good/Bad mask states 82 // -------------------- 83 // 84 // GoodMask BadMask WeakGoodMask WeakBadMask 85 // -------------------------------------------------------------- 86 // Marked0 001 110 101 010 87 // Marked1 010 101 110 001 88 // Remapped 100 011 100 011 89 // 90 91 // Good/bad masks 92 extern uintptr_t ZAddressGoodMask; 93 extern uintptr_t ZAddressBadMask; 94 extern uintptr_t ZAddressWeakBadMask; 95 96 // Pointer base address 97 extern uintptr_t ZAddressBase; 98 99 // Pointer part of address 100 extern size_t ZAddressOffsetBits; 101 const size_t ZAddressOffsetShift = 0; 102 extern uintptr_t ZAddressOffsetMask; 103 extern size_t ZAddressOffsetMax; 104 105 // Metadata part of address 106 const size_t ZAddressMetadataBits = 4; 107 extern size_t ZAddressMetadataShift; 108 extern uintptr_t ZAddressMetadataMask; 109 110 // Metadata types 111 extern uintptr_t ZAddressMetadataMarked; 112 extern uintptr_t ZAddressMetadataMarked0; 113 extern uintptr_t ZAddressMetadataMarked1; 114 extern uintptr_t ZAddressMetadataRemapped; 115 extern uintptr_t ZAddressMetadataFinalizable; 116 117 // NMethod entry barrier 118 const size_t ZNMethodDisarmedOffset = ZPlatformNMethodDisarmedOffset; 119 120 // Cache line size 121 const size_t ZCacheLineSize = ZPlatformCacheLineSize; 122 #define ZCACHE_ALIGNED ATTRIBUTE_ALIGNED(ZCacheLineSize) 123 124 // Mark stack space 125 extern uintptr_t ZMarkStackSpaceStart; 126 const size_t ZMarkStackSpaceExpandSize = (size_t)1 << 25; // 32M 127 128 // Mark stack and magazine sizes 129 const size_t ZMarkStackSizeShift = 11; // 2K 130 const size_t ZMarkStackSize = (size_t)1 << ZMarkStackSizeShift; 131 const size_t ZMarkStackHeaderSize = (size_t)1 << 4; // 16B 132 const size_t ZMarkStackSlots = (ZMarkStackSize - ZMarkStackHeaderSize) / sizeof(uintptr_t); 133 const size_t ZMarkStackMagazineSize = (size_t)1 << 15; // 32K 134 const size_t ZMarkStackMagazineSlots = (ZMarkStackMagazineSize / ZMarkStackSize) - 1; 135 136 // Mark stripe size 137 const size_t ZMarkStripeShift = ZGranuleSizeShift; 138 139 // Max number of mark stripes 140 const size_t ZMarkStripesMax = 16; // Must be a power of two 141 142 // Mark cache size 143 const size_t ZMarkCacheSize = 1024; // Must be a power of two 144 145 // Partial array minimum size 146 const size_t ZMarkPartialArrayMinSizeShift = 12; // 4K 147 const size_t ZMarkPartialArrayMinSize = (size_t)1 << ZMarkPartialArrayMinSizeShift; 148 149 // Max number of proactive/terminate flush attempts 150 const size_t ZMarkProactiveFlushMax = 10; 151 const size_t ZMarkTerminateFlushMax = 3; 152 153 // Try complete mark timeout 154 const uint64_t ZMarkCompleteTimeout = 1; // ms 155 156 #endif // SHARE_GC_Z_ZGLOBALS_HPP