dByteArrayKlass.hpp

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00001 /* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.15 $ */
00002 /* Copyright (c) 2006, Sun Microsystems, Inc.
00003 All rights reserved.
00004 
00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
00006 following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
00009     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 
00010           disclaimer in the documentation and/or other materials provided with the distribution.
00011     * Neither the name of Sun Microsystems nor the names of its contributors may be used to endorse or promote products derived 
00012           from this software without specific prior written permission.
00013 
00014 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT 
00015 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
00016 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
00017 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
00018 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
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00020 
00021 
00022 */
00023 
00024 class doubleByteArrayKlass: public memOopKlass {
00025  public:
00026   // allocation properties
00027   bool can_inline_allocation() const { return false; }
00028 
00029   // Return the oop size for a doubleByteArrayOop
00030   int object_size(int number_of_doubleBytes) const {
00031     return   non_indexable_size() + 1
00032            + roundTo(number_of_doubleBytes * 2, oopSize) / oopSize;
00033   }
00034  
00035   // creation operations
00036   oop allocateObject();
00037   oop allocateObjectSize(int bytes);
00038 
00039   // creates invocation
00040   klassOop create_subclass(mixinOop mixin, Format format);
00041 
00042   static klassOop create_class(klassOop super_class, mixinOop mixin);
00043 
00044   // Format
00045   Format format() { return doubleByteArray_klass; }
00046 
00047   friend void set_doubleByteArrayKlass_vtbl(Klass* k);
00048 
00049   char* name() const { return "doubleByteArray"; }
00050 
00051  // ALL FUNCTIONS BELOW THIS POINT ARE DISPATCHED FROM AN OOP 
00052  public:
00053   // accessors
00054   int oop_scavenge_contents(oop obj);
00055   int oop_scavenge_tenured_contents(oop obj); 
00056 
00057   bool oop_verify(oop obj);
00058   void oop_print_value_on(oop obj, outputStream* st);
00059 
00060   // iterators
00061   void oop_oop_iterate(oop obj, OopClosure* blk);
00062   void oop_layout_iterate(oop obj, ObjectLayoutClosure* blk);
00063 
00064   // Sizing
00065   int oop_header_size() const { return doubleByteArrayOopDesc::header_size(); }
00066   int oop_size(oop obj) const { return object_size(doubleByteArrayOop(obj)->length()); }
00067 
00068   // testers
00069   bool oop_is_doubleByteArray() const { return true; }
00070   bool oop_is_indexable() const       { return true; }
00071 };

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