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hotspot/src/share/vm/oops/objArrayOop.hpp

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+/*
+ * 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];
+  }
+};