| /* |
| * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef SHARE_GC_Z_ZGLOBALS_HPP |
| #define SHARE_GC_Z_ZGLOBALS_HPP |
| |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/macros.hpp" |
| #include CPU_HEADER(gc/z/zGlobals) |
| |
| // Collector name |
| const char* const ZName = "The Z Garbage Collector"; |
| |
| // Global phase state |
| extern uint32_t ZGlobalPhase; |
| const uint32_t ZPhaseMark = 0; |
| const uint32_t ZPhaseMarkCompleted = 1; |
| const uint32_t ZPhaseRelocate = 2; |
| |
| // Global sequence number |
| extern uint32_t ZGlobalSeqNum; |
| |
| // Granule shift/size |
| const size_t ZGranuleSizeShift = ZPlatformGranuleSizeShift; |
| const size_t ZGranuleSize = (size_t)1 << ZGranuleSizeShift; |
| |
| // Number of heap views |
| const size_t ZHeapViews = ZPlatformHeapViews; |
| |
| // Virtual memory to physical memory ratio |
| const size_t ZVirtualToPhysicalRatio = 16; // 16:1 |
| |
| // |
| // Page Tiers (assuming ZGranuleSize=2M) |
| // ------------------------------------- |
| // |
| // Page Size Object Size Object Alignment |
| // -------------------------------------------------- |
| // Small 2M <= 265K MinObjAlignmentInBytes |
| // Medium 32M <= 4M 4K |
| // Large N x 2M > 4M 2M |
| // |
| |
| // Page types |
| const uint8_t ZPageTypeSmall = 0; |
| const uint8_t ZPageTypeMedium = 1; |
| const uint8_t ZPageTypeLarge = 2; |
| |
| // Page size shifts |
| const size_t ZPageSizeSmallShift = ZGranuleSizeShift; |
| const size_t ZPageSizeMediumShift = ZPageSizeSmallShift + 4; |
| |
| // Page sizes |
| const size_t ZPageSizeSmall = (size_t)1 << ZPageSizeSmallShift; |
| const size_t ZPageSizeMedium = (size_t)1 << ZPageSizeMediumShift; |
| |
| // Object size limits |
| const size_t ZObjectSizeLimitSmall = (ZPageSizeSmall / 8); // Allow 12.5% waste |
| const size_t ZObjectSizeLimitMedium = (ZPageSizeMedium / 8); // Allow 12.5% waste |
| |
| // Object alignment shifts |
| extern const int& ZObjectAlignmentSmallShift; |
| const int ZObjectAlignmentMediumShift = ZPageSizeMediumShift - 13; // 8192 objects per page |
| const int ZObjectAlignmentLargeShift = ZPageSizeSmallShift; |
| |
| // Object alignments |
| extern const int& ZObjectAlignmentSmall; |
| const int ZObjectAlignmentMedium = 1 << ZObjectAlignmentMediumShift; |
| const int ZObjectAlignmentLarge = 1 << ZObjectAlignmentLargeShift; |
| |
| // |
| // Good/Bad mask states |
| // -------------------- |
| // |
| // GoodMask BadMask WeakGoodMask WeakBadMask |
| // -------------------------------------------------------------- |
| // Marked0 001 110 101 010 |
| // Marked1 010 101 110 001 |
| // Remapped 100 011 100 011 |
| // |
| |
| // Good/bad masks |
| extern uintptr_t ZAddressGoodMask; |
| extern uintptr_t ZAddressBadMask; |
| extern uintptr_t ZAddressWeakBadMask; |
| |
| // Pointer base address |
| extern uintptr_t ZAddressBase; |
| |
| // Pointer part of address |
| extern size_t ZAddressOffsetBits; |
| const size_t ZAddressOffsetShift = 0; |
| extern uintptr_t ZAddressOffsetMask; |
| extern size_t ZAddressOffsetMax; |
| |
| // Metadata part of address |
| const size_t ZAddressMetadataBits = 4; |
| extern size_t ZAddressMetadataShift; |
| extern uintptr_t ZAddressMetadataMask; |
| |
| // Metadata types |
| extern uintptr_t ZAddressMetadataMarked; |
| extern uintptr_t ZAddressMetadataMarked0; |
| extern uintptr_t ZAddressMetadataMarked1; |
| extern uintptr_t ZAddressMetadataRemapped; |
| extern uintptr_t ZAddressMetadataFinalizable; |
| |
| // NMethod entry barrier |
| const size_t ZNMethodDisarmedOffset = ZPlatformNMethodDisarmedOffset; |
| |
| // Cache line size |
| const size_t ZCacheLineSize = ZPlatformCacheLineSize; |
| #define ZCACHE_ALIGNED ATTRIBUTE_ALIGNED(ZCacheLineSize) |
| |
| // Mark stack space |
| extern uintptr_t ZMarkStackSpaceStart; |
| const size_t ZMarkStackSpaceExpandSize = (size_t)1 << 25; // 32M |
| |
| // Mark stack and magazine sizes |
| const size_t ZMarkStackSizeShift = 11; // 2K |
| const size_t ZMarkStackSize = (size_t)1 << ZMarkStackSizeShift; |
| const size_t ZMarkStackHeaderSize = (size_t)1 << 4; // 16B |
| const size_t ZMarkStackSlots = (ZMarkStackSize - ZMarkStackHeaderSize) / sizeof(uintptr_t); |
| const size_t ZMarkStackMagazineSize = (size_t)1 << 15; // 32K |
| const size_t ZMarkStackMagazineSlots = (ZMarkStackMagazineSize / ZMarkStackSize) - 1; |
| |
| // Mark stripe size |
| const size_t ZMarkStripeShift = ZGranuleSizeShift; |
| |
| // Max number of mark stripes |
| const size_t ZMarkStripesMax = 16; // Must be a power of two |
| |
| // Mark cache size |
| const size_t ZMarkCacheSize = 1024; // Must be a power of two |
| |
| // Partial array minimum size |
| const size_t ZMarkPartialArrayMinSizeShift = 12; // 4K |
| const size_t ZMarkPartialArrayMinSize = (size_t)1 << ZMarkPartialArrayMinSizeShift; |
| |
| // Max number of proactive/terminate flush attempts |
| const size_t ZMarkProactiveFlushMax = 10; |
| const size_t ZMarkTerminateFlushMax = 3; |
| |
| // Try complete mark timeout |
| const uint64_t ZMarkCompleteTimeout = 1; // ms |
| |
| #endif // SHARE_GC_Z_ZGLOBALS_HPP |