1 /*
   2  * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "incls/_precompiled.incl"
  26 #include "incls/_klassVtable.cpp.incl"















  27 
  28 inline instanceKlass* klassVtable::ik() const {
  29   Klass* k = _klass()->klass_part();
  30   assert(k->oop_is_instance(), "not an instanceKlass");
  31   return (instanceKlass*)k;
  32 }
  33 
  34 
  35 // this function computes the vtable size (including the size needed for miranda
  36 // methods) and the number of miranda methods in this class
  37 // Note on Miranda methods: Let's say there is a class C that implements
  38 // interface I.  Let's say there is a method m in I that neither C nor any
  39 // of its super classes implement (i.e there is no method of any access, with
  40 // the same name and signature as m), then m is a Miranda method which is
  41 // entered as a public abstract method in C's vtable.  From then on it should
  42 // treated as any other public method in C for method over-ride purposes.
  43 void klassVtable::compute_vtable_size_and_num_mirandas(int &vtable_length,
  44                                                        int &num_miranda_methods,
  45                                                        klassOop super,
  46                                                        objArrayOop methods,

   1 /*
   2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "classfile/systemDictionary.hpp"
  27 #include "classfile/vmSymbols.hpp"
  28 #include "gc_implementation/shared/markSweep.inline.hpp"
  29 #include "memory/gcLocker.hpp"
  30 #include "memory/resourceArea.hpp"
  31 #include "memory/universe.inline.hpp"
  32 #include "oops/instanceKlass.hpp"
  33 #include "oops/klassOop.hpp"
  34 #include "oops/klassVtable.hpp"
  35 #include "oops/methodOop.hpp"
  36 #include "oops/objArrayOop.hpp"
  37 #include "oops/oop.inline.hpp"
  38 #include "prims/jvmtiRedefineClassesTrace.hpp"
  39 #include "runtime/arguments.hpp"
  40 #include "runtime/handles.inline.hpp"
  41 #include "utilities/copy.hpp"
  42 
  43 inline instanceKlass* klassVtable::ik() const {
  44   Klass* k = _klass()->klass_part();
  45   assert(k->oop_is_instance(), "not an instanceKlass");
  46   return (instanceKlass*)k;
  47 }
  48 
  49 
  50 // this function computes the vtable size (including the size needed for miranda
  51 // methods) and the number of miranda methods in this class
  52 // Note on Miranda methods: Let's say there is a class C that implements
  53 // interface I.  Let's say there is a method m in I that neither C nor any
  54 // of its super classes implement (i.e there is no method of any access, with
  55 // the same name and signature as m), then m is a Miranda method which is
  56 // entered as a public abstract method in C's vtable.  From then on it should
  57 // treated as any other public method in C for method over-ride purposes.
  58 void klassVtable::compute_vtable_size_and_num_mirandas(int &vtable_length,
  59                                                        int &num_miranda_methods,
  60                                                        klassOop super,
  61                                                        objArrayOop methods,