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src/hotspot/share/oops/instanceOop.hpp
47 строк
2 KB
Frederic Parain
8249149: Remove obsolete UseNewFieldLayout option and associated code
10 июл 2020, 16:13
10 июл 2020, 16:13
985061a
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/* * Copyright (c) 1997, 2020, 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. * */ #ifndef SHARE_OOPS_INSTANCEOOP_HPP #define SHARE_OOPS_INSTANCEOOP_HPP #include "oops/oop.hpp" // An instanceOop is an instance of a Java Class // Evaluating "new HashTable()" will create an instanceOop. class instanceOopDesc : public oopDesc { public: // aligned header size. static int header_size() { return sizeof(instanceOopDesc)/HeapWordSize; } // If compressed, the offset of the fields of the instance may not be aligned. static int base_offset_in_bytes() { return (UseCompressedClassPointers) ? klass_gap_offset_in_bytes() : sizeof(instanceOopDesc); } }; #endif // SHARE_OOPS_INSTANCEOOP_HPP