view src/hotspot/os_cpu/linux_x86/gc/z/zGlobals_linux_x86.hpp @ 55970:24f6b0e413a0

8221786: ZGC: Increase max heap size to 16TB Reviewed-by: stefank
author pliden
date Thu, 25 Apr 2019 08:55:50 +0200
parents ed3c6f07faab
children
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/*
 * 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
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#ifndef OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP
#define OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP

//
// Page Allocation Tiers
// ---------------------
//
//  Page Type     Page Size     Object Size Limit     Object Alignment
//  ------------------------------------------------------------------
//  Small         2M            <= 265K               <MinObjAlignmentInBytes>
//  Medium        32M           <= 4M                 4K
//  Large         X*M           > 4M                  2M
//  ------------------------------------------------------------------
//
const size_t ZPlatformGranuleSizeShift      = 21; // 2MB
const size_t ZPlatformMaxHeapSizeShift      = 46; // 16TB
const size_t ZPlatformNMethodDisarmedOffset = 4;
const size_t ZPlatformCacheLineSize         = 64;

uintptr_t    ZPlatformAddressSpaceStart();
uintptr_t    ZPlatformAddressSpaceEnd();
uintptr_t    ZPlatformAddressReservedStart();
uintptr_t    ZPlatformAddressReservedEnd();
uintptr_t    ZPlatformAddressBase();
size_t       ZPlatformAddressOffsetBits();
size_t       ZPlatformAddressMetadataShift();

#endif // OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP