Mercurial > hg > graal-jvmci-8
view src/share/vm/shark/shark_globals.hpp @ 12110:4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso
author | stefank |
---|---|
date | Fri, 16 Aug 2013 13:22:32 +0200 |
parents | 2cd5e15048e6 |
children |
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/* * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2008, 2009, 2010 Red Hat, Inc. * 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_VM_SHARK_SHARK_GLOBALS_HPP #define SHARE_VM_SHARK_SHARK_GLOBALS_HPP #include "runtime/globals.hpp" #ifdef TARGET_ARCH_zero # include "shark_globals_zero.hpp" #endif #define SHARK_FLAGS(develop, develop_pd, product, product_pd, diagnostic, notproduct) \ \ product(intx, MaxNodeLimit, 65000, \ "Maximum number of nodes") \ \ /* inlining */ \ product(intx, SharkMaxInlineSize, 32, \ "Maximum bytecode size of methods to inline when using Shark") \ \ product(bool, EliminateNestedLocks, true, \ "Eliminate nested locks of the same object when possible") \ \ product(ccstr, SharkOptimizationLevel, "Default", \ "The optimization level passed to LLVM, possible values: None, Less, Default and Agressive") \ \ /* compiler debugging */ \ develop(ccstr, SharkPrintTypeflowOf, NULL, \ "Print the typeflow of the specified method") \ \ diagnostic(ccstr, SharkPrintBitcodeOf, NULL, \ "Print the LLVM bitcode of the specified method") \ \ diagnostic(ccstr, SharkPrintAsmOf, NULL, \ "Print the asm of the specified method") \ \ develop(bool, SharkTraceBytecodes, false, \ "Trace bytecode compilation") \ \ diagnostic(bool, SharkTraceInstalls, false, \ "Trace method installation") \ \ diagnostic(bool, SharkPerformanceWarnings, false, \ "Warn about things that could be made faster") \ \ develop(ccstr, SharkVerifyFunction, NULL, \ "Runs LLVM verify over LLVM IR") \ SHARK_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) #endif // SHARE_VM_SHARK_SHARK_GLOBALS_HPP