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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 * 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).
 *
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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 SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP
#define SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP

#include "gc/shared/cardTableModRefBS.hpp"
#include "runtime/orderAccess.inline.hpp"

template <DecoratorSet decorators, typename T>
inline void CardTableModRefBS::write_ref_field_post(T* field, oop newVal) {
  volatile jbyte* byte = byte_for(field);
  if (UseConcMarkSweepGC) {
    // Perform a releasing store if using CMS so that it may
    // scan and clear the cards concurrently during pre-cleaning.
    OrderAccess::release_store(byte, jbyte(dirty_card));
  } else {
    *byte = dirty_card;
  }
}

#endif // SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP