1 /* 2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "oops/access.inline.hpp" 27 #include "oops/objArrayKlass.hpp" 28 #include "oops/objArrayOop.inline.hpp" 29 #include "oops/oop.inline.hpp" 30 31 oop objArrayOopDesc::atomic_compare_exchange_oop(int index, oop exchange_value, 32 oop compare_value) { 33 ptrdiff_t offs; 34 if (UseCompressedOops) { 35 offs = objArrayOopDesc::obj_at_offset<narrowOop>(index); 36 } else { 37 offs = objArrayOopDesc::obj_at_offset<oop>(index); 38 } 39 return HeapAccess<IS_ARRAY>::oop_atomic_cmpxchg_at(as_oop(), offs, compare_value, exchange_value); 40 } 41 42 Klass* objArrayOopDesc::element_klass() { 43 return ObjArrayKlass::cast(klass())->element_klass(); 44 }