annotate src/share/vm/oops/compiledICHolderKlass.hpp @ 1091:6aa7255741f3

6906727: UseCompressedOops: some card-marking fixes related to object arrays Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17). Reviewed-by: kvn, coleenp, jmasa
author ysr
date Thu, 03 Dec 2009 15:01:57 -0800
parents a61af66fc99e
children 4e6abf09f540
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1 /*
a61af66fc99e Initial load
duke
parents:
diff changeset
2 * Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved.
a61af66fc99e Initial load
duke
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load
duke
parents:
diff changeset
4 *
a61af66fc99e Initial load
duke
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load
duke
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load
duke
parents:
diff changeset
7 * published by the Free Software Foundation.
a61af66fc99e Initial load
duke
parents:
diff changeset
8 *
a61af66fc99e Initial load
duke
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load
duke
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load
duke
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load
duke
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load
duke
parents:
diff changeset
13 * accompanied this code).
a61af66fc99e Initial load
duke
parents:
diff changeset
14 *
a61af66fc99e Initial load
duke
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load
duke
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load
duke
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load
duke
parents:
diff changeset
18 *
a61af66fc99e Initial load
duke
parents:
diff changeset
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
a61af66fc99e Initial load
duke
parents:
diff changeset
20 * CA 95054 USA or visit www.sun.com if you need additional information or
a61af66fc99e Initial load
duke
parents:
diff changeset
21 * have any questions.
a61af66fc99e Initial load
duke
parents:
diff changeset
22 *
a61af66fc99e Initial load
duke
parents:
diff changeset
23 */
a61af66fc99e Initial load
duke
parents:
diff changeset
24
a61af66fc99e Initial load
duke
parents:
diff changeset
25 class CMSIsAliveClosure;
a61af66fc99e Initial load
duke
parents:
diff changeset
26
a61af66fc99e Initial load
duke
parents:
diff changeset
27 // a compiledICHolderKlass is the klass of a compiledICHolderOop
a61af66fc99e Initial load
duke
parents:
diff changeset
28
a61af66fc99e Initial load
duke
parents:
diff changeset
29 class compiledICHolderKlass : public Klass {
a61af66fc99e Initial load
duke
parents:
diff changeset
30 friend class VMStructs;
a61af66fc99e Initial load
duke
parents:
diff changeset
31 private:
a61af66fc99e Initial load
duke
parents:
diff changeset
32 juint _alloc_size; // allocation profiling support
a61af66fc99e Initial load
duke
parents:
diff changeset
33 public:
a61af66fc99e Initial load
duke
parents:
diff changeset
34 // Testing
a61af66fc99e Initial load
duke
parents:
diff changeset
35 bool oop_is_compiledICHolder() const { return true; }
a61af66fc99e Initial load
duke
parents:
diff changeset
36
a61af66fc99e Initial load
duke
parents:
diff changeset
37 // Allocation
a61af66fc99e Initial load
duke
parents:
diff changeset
38 DEFINE_ALLOCATE_PERMANENT(compiledICHolderKlass);
a61af66fc99e Initial load
duke
parents:
diff changeset
39 compiledICHolderOop allocate(TRAPS);
a61af66fc99e Initial load
duke
parents:
diff changeset
40 static klassOop create_klass(TRAPS);
a61af66fc99e Initial load
duke
parents:
diff changeset
41
a61af66fc99e Initial load
duke
parents:
diff changeset
42 // Sizing
a61af66fc99e Initial load
duke
parents:
diff changeset
43 int oop_size(oop obj) const;
a61af66fc99e Initial load
duke
parents:
diff changeset
44 int klass_oop_size() const { return object_size(); }
a61af66fc99e Initial load
duke
parents:
diff changeset
45
a61af66fc99e Initial load
duke
parents:
diff changeset
46 // Casting from klassOop
a61af66fc99e Initial load
duke
parents:
diff changeset
47 static compiledICHolderKlass* cast(klassOop k) {
a61af66fc99e Initial load
duke
parents:
diff changeset
48 assert(k->klass_part()->oop_is_compiledICHolder(), "cast to compiledICHolderKlass");
a61af66fc99e Initial load
duke
parents:
diff changeset
49 return (compiledICHolderKlass*) k->klass_part();
a61af66fc99e Initial load
duke
parents:
diff changeset
50 }
a61af66fc99e Initial load
duke
parents:
diff changeset
51
a61af66fc99e Initial load
duke
parents:
diff changeset
52 // Sizing
a61af66fc99e Initial load
duke
parents:
diff changeset
53 static int header_size() { return oopDesc::header_size() + sizeof(compiledICHolderKlass)/HeapWordSize; }
a61af66fc99e Initial load
duke
parents:
diff changeset
54 int object_size() const { return align_object_size(header_size()); }
a61af66fc99e Initial load
duke
parents:
diff changeset
55
a61af66fc99e Initial load
duke
parents:
diff changeset
56 // Garbage collection
a61af66fc99e Initial load
duke
parents:
diff changeset
57 void oop_follow_contents(oop obj);
a61af66fc99e Initial load
duke
parents:
diff changeset
58 int oop_adjust_pointers(oop obj);
a61af66fc99e Initial load
duke
parents:
diff changeset
59
a61af66fc99e Initial load
duke
parents:
diff changeset
60 // Parallel Scavenge and Parallel Old
a61af66fc99e Initial load
duke
parents:
diff changeset
61 PARALLEL_GC_DECLS
a61af66fc99e Initial load
duke
parents:
diff changeset
62
a61af66fc99e Initial load
duke
parents:
diff changeset
63 // Allocation profiling support
a61af66fc99e Initial load
duke
parents:
diff changeset
64 juint alloc_size() const { return _alloc_size; }
a61af66fc99e Initial load
duke
parents:
diff changeset
65 void set_alloc_size(juint n) { _alloc_size = n; }
a61af66fc99e Initial load
duke
parents:
diff changeset
66
a61af66fc99e Initial load
duke
parents:
diff changeset
67 // Iterators
a61af66fc99e Initial load
duke
parents:
diff changeset
68 int oop_oop_iterate(oop obj, OopClosure* blk);
a61af66fc99e Initial load
duke
parents:
diff changeset
69 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
a61af66fc99e Initial load
duke
parents:
diff changeset
70
a61af66fc99e Initial load
duke
parents:
diff changeset
71 #ifndef PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
72 public:
a61af66fc99e Initial load
duke
parents:
diff changeset
73 // Printing
a61af66fc99e Initial load
duke
parents:
diff changeset
74 void oop_print_on (oop obj, outputStream* st);
a61af66fc99e Initial load
duke
parents:
diff changeset
75 void oop_print_value_on(oop obj, outputStream* st);
a61af66fc99e Initial load
duke
parents:
diff changeset
76 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
77
a61af66fc99e Initial load
duke
parents:
diff changeset
78 public:
a61af66fc99e Initial load
duke
parents:
diff changeset
79 // Verification
a61af66fc99e Initial load
duke
parents:
diff changeset
80 const char* internal_name() const;
a61af66fc99e Initial load
duke
parents:
diff changeset
81 void oop_verify_on(oop obj, outputStream* st);
a61af66fc99e Initial load
duke
parents:
diff changeset
82
a61af66fc99e Initial load
duke
parents:
diff changeset
83 };