Mercurial > hg > truffle
diff src/share/vm/oops/klassOop.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/oops/klassOop.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,44 @@ +/* + * 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()); } +};