src/hotspot/cpu/x86/gc/z/zGlobals_x86.hpp
author pliden
Mon, 07 Oct 2019 07:53:38 +0200
changeset 58468 97cd0aa39787
parent 58451 389e50d98dc3
child 58679 9c3209ff7550
child 58787 32d39d9525f9
permissions -rw-r--r--
8231825: ZGC: Remove ZMaxHeapSize and ZMaxHeapSizeShift Reviewed-by: tschatzl, eosterlund

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#ifndef CPU_X86_GC_Z_ZGLOBALS_X86_HPP
#define CPU_X86_GC_Z_ZGLOBALS_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 ZPlatformNMethodDisarmedOffset = 4;
const size_t ZPlatformCacheLineSize         = 64;

uintptr_t    ZPlatformAddressBase();
size_t       ZPlatformAddressOffsetBits();
size_t       ZPlatformAddressMetadataShift();

#endif // CPU_X86_GC_Z_ZGLOBALS_X86_HPP