jdk-24/hotspot/src/share/vm/oops/objArrayOop.hpp

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2007-12-01 00:00:00 +00:00
/*
* Copyright 1997-2003 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.
*
*/
// An objArrayOop is an array containing oops.
// Evaluating "String arg[10]" will create an objArrayOop.
class objArrayOopDesc : public arrayOopDesc {
public:
// Accessing
oop obj_at(int index) const { return *obj_at_addr(index); }
void obj_at_put(int index, oop value) { oop_store(obj_at_addr(index), value); }
oop* base() const { return (oop*) arrayOopDesc::base(T_OBJECT); }
// Sizing
static int header_size() { return arrayOopDesc::header_size(T_OBJECT); }
static int object_size(int length) { return align_object_size(header_size() + length); }
int object_size() { return object_size(length()); }
// Returns the address of the index'th element
oop* obj_at_addr(int index) const {
assert(is_within_bounds(index), "index out of bounds");
return &base()[index];
}
};