Mercurial > hg > graal-jvmci-8
view src/share/vm/ci/ciMethodType.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 |
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date | Fri, 16 Aug 2013 13:22:32 +0200 |
parents | f6b0eb4e44cf |
children |
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/* * Copyright (c) 2012, 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_VM_CI_CIMETHODTYPE_HPP #define SHARE_VM_CI_CIMETHODTYPE_HPP #include "ci/ciInstance.hpp" #include "ci/ciUtilities.hpp" #include "classfile/javaClasses.hpp" // ciMethodType // // The class represents a java.lang.invoke.MethodType object. class ciMethodType : public ciInstance { private: ciType* class_to_citype(oop klass_oop) const { if (java_lang_Class::is_primitive(klass_oop)) { BasicType bt = java_lang_Class::primitive_type(klass_oop); return ciType::make(bt); } else { Klass* k = java_lang_Class::as_Klass(klass_oop); return CURRENT_ENV->get_klass(k); } } public: ciMethodType(instanceHandle h_i) : ciInstance(h_i) {} // What kind of ciObject is this? bool is_method_type() const { return true; } ciType* rtype() const { GUARDED_VM_ENTRY( oop rtype = java_lang_invoke_MethodType::rtype(get_oop()); return class_to_citype(rtype); ) } int ptype_count() const { GUARDED_VM_ENTRY(return java_lang_invoke_MethodType::ptype_count(get_oop());) } int ptype_slot_count() const { GUARDED_VM_ENTRY(return java_lang_invoke_MethodType::ptype_slot_count(get_oop());) } ciType* ptype_at(int index) const { GUARDED_VM_ENTRY( oop ptype = java_lang_invoke_MethodType::ptype(get_oop(), index); return class_to_citype(ptype); ) } }; #endif // SHARE_VM_CI_CIMETHODTYPE_HPP