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master
src/hotspot/share/oops/objArrayOop.cpp
44 строки
2 KB
Stefan Karlsson
8204540: Automatic oop closure devirtualization
26 май 2018, 07:59
26 май 2018, 07:59
1181388
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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 "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<IS_ARRAY>::oop_atomic_cmpxchg_at(exchange_value, as_oop(), offs, compare_value); } Klass* objArrayOopDesc::element_klass() { return ObjArrayKlass::cast(klass())->element_klass(); }