Wed, 06 Jan 2010 22:21:39 -0800
Merge
1 /*
2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 // A constantPoolKlass is the klass of a constantPoolOop
27 class constantPoolKlass : public Klass {
28 juint _alloc_size; // allocation profiling support
29 public:
30 // Dispatched klass operations
31 bool oop_is_constantPool() const { return true; }
32 int oop_size(oop obj) const;
33 int klass_oop_size() const { return object_size(); }
35 // Allocation
36 DEFINE_ALLOCATE_PERMANENT(constantPoolKlass);
37 constantPoolOop allocate(int length, bool is_conc_safe, TRAPS);
38 static klassOop create_klass(TRAPS);
40 // Casting from klassOop
41 static constantPoolKlass* cast(klassOop k) {
42 assert(k->klass_part()->oop_is_constantPool(), "cast to constantPoolKlass");
43 return (constantPoolKlass*) k->klass_part();
44 }
46 // Sizing
47 static int header_size() { return oopDesc::header_size() + sizeof(constantPoolKlass)/HeapWordSize; }
48 int object_size() const { return align_object_size(header_size()); }
50 // Garbage collection
51 // Returns true is the object is safe for GC concurrent processing.
52 virtual bool oop_is_conc_safe(oop obj) const;
53 void oop_follow_contents(oop obj);
54 int oop_adjust_pointers(oop obj);
56 // Parallel Scavenge and Parallel Old
57 PARALLEL_GC_DECLS
59 // Iterators
60 int oop_oop_iterate(oop obj, OopClosure* blk);
61 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
63 // Allocation profiling support
64 // no idea why this is pure virtual and not in Klass ???
65 juint alloc_size() const { return _alloc_size; }
66 void set_alloc_size(juint n) { _alloc_size = n; }
68 #ifndef PRODUCT
69 public:
70 // Printing
71 void oop_print_on(oop obj, outputStream* st);
72 #endif
74 public:
75 // Verification
76 const char* internal_name() const;
77 void oop_verify_on(oop obj, outputStream* st);
78 // tells whether obj is partially constructed (gc during class loading)
79 bool oop_partially_loaded(oop obj) const;
80 void oop_set_partially_loaded(oop obj);
81 #ifndef PRODUCT
82 // Compile the world support
83 static void preload_and_initialize_all_classes(oop constant_pool, TRAPS);
84 #endif
85 };