Mercurial > hg > graal-compiler
view src/share/vm/oops/klassOop.hpp @ 124:b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
Summary: 64-bits VM crashes with -XX:+AggresiveOpts (Escape Analysis + Compressed Oops)
Reviewed-by: never, sgoldman
author | kvn |
---|---|
date | Wed, 23 Apr 2008 11:20:36 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 1997-2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // A klassOop is the C++ equivalent of a Java class. // Part of a klassOopDesc is a Klass which handle the // dispatching for the C++ method calls. // klassOop object layout: // [header ] // [klass_field] // [KLASS ] class klassOopDesc : public oopDesc { public: // size operation static int header_size() { return sizeof(klassOopDesc)/HeapWordSize; } // support for code generation static int klass_part_offset_in_bytes() { return sizeof(klassOopDesc); } // returns the Klass part containing dispatching behavior Klass* klass_part() { return (Klass*)((address)this + klass_part_offset_in_bytes()); } };