src/hotspot/share/gc/shared/cardTableModRefBS.inline.hpp
author eosterlund
Wed, 10 Jan 2018 18:04:56 +0100
changeset 48628 69d65d9dcadb
parent 47998 fb0275c320a0
child 49164 7e958a8ebcd3
permissions -rw-r--r--
8193063: Enabling narrowOop values for RawAccess accesses Reviewed-by: pliden, kbarrett
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/*
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 * Copyright (c) 2000, 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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#ifndef SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP
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#define SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP
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#include "gc/shared/cardTableModRefBS.hpp"
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#include "runtime/orderAccess.inline.hpp"
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template <DecoratorSet decorators, typename T>
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inline void CardTableModRefBS::write_ref_field_post(T* field, oop newVal) {
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  volatile jbyte* byte = byte_for(field);
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  if (UseConcMarkSweepGC) {
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    // Perform a releasing store if using CMS so that it may
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    // scan and clear the cards concurrently during pre-cleaning.
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    OrderAccess::release_store(byte, jbyte(dirty_card));
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  } else {
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    *byte = dirty_card;
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  }
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}
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#endif // SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP