41 lines
1.6 KiB
C++
41 lines
1.6 KiB
C++
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/*
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* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "classfile/javaClasses.inline.hpp"
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#include "gc/shared/accessBarrierSupport.inline.hpp"
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#include "oops/access.hpp"
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DecoratorSet AccessBarrierSupport::resolve_unknown_oop_ref_strength(DecoratorSet decorators, oop base, ptrdiff_t offset) {
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DecoratorSet ds = decorators & ~ON_UNKNOWN_OOP_REF;
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if (!java_lang_ref_Reference::is_referent_field(base, offset)) {
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ds |= ON_STRONG_OOP_REF;
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} else if (java_lang_ref_Reference::is_phantom(base)) {
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ds |= ON_PHANTOM_OOP_REF;
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} else {
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ds |= ON_WEAK_OOP_REF;
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}
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return ds;
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}
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