view src/hotspot/share/oops/objArrayOop.cpp @ 49685:69bae761600b

8201442: objArrayOopDesc::atomic_compare_exchange_oop() must use obj+offset in HeapAccess call Reviewed-by: shade, eosterlund
author rkennke
date Thu, 12 Apr 2018 23:10:19 +0200
parents 44122f767467
children
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/*
 * Copyright (c) 1997, 2018, 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.
 *
 */

#include "precompiled.hpp"
#include "gc/shared/specialized_oop_closures.hpp"
#include "oops/access.inline.hpp"
#include "oops/objArrayKlass.hpp"
#include "oops/objArrayOop.inline.hpp"
#include "oops/oop.inline.hpp"

oop objArrayOopDesc::atomic_compare_exchange_oop(int index, oop exchange_value,
                                                 oop compare_value) {
  ptrdiff_t offs;
  if (UseCompressedOops) {
    offs = objArrayOopDesc::obj_at_offset<narrowOop>(index);
  } else {
    offs = objArrayOopDesc::obj_at_offset<oop>(index);
  }
  return HeapAccess<IN_HEAP_ARRAY>::oop_atomic_cmpxchg_at(exchange_value, as_oop(), offs, compare_value);
}

Klass* objArrayOopDesc::element_klass() {
  return ObjArrayKlass::cast(klass())->element_klass();
}

#define ObjArrayOop_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)                    \
                                                                                   \
void objArrayOopDesc::oop_iterate_range(OopClosureType* blk, int start, int end) {  \
  ((ObjArrayKlass*)klass())->oop_oop_iterate_range##nv_suffix(this, blk, start, end); \
}

ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayOop_OOP_ITERATE_DEFN)
ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayOop_OOP_ITERATE_DEFN)