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comparison src/share/vm/oops/klass.hpp @ 8124:5fc51c1ecdeb

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Merge.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Tue, 05 Mar 2013 23:44:54 +0100
parents 989155e2d07a 3c9bc17b9403
children b9a918201d47
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7943:a413bcd552a4 8124:5fc51c1ecdeb
1 /* 1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
33 #include "oops/metadata.hpp" 33 #include "oops/metadata.hpp"
34 #include "oops/oop.hpp" 34 #include "oops/oop.hpp"
35 #include "runtime/orderAccess.hpp" 35 #include "runtime/orderAccess.hpp"
36 #include "trace/traceMacros.hpp" 36 #include "trace/traceMacros.hpp"
37 #include "utilities/accessFlags.hpp" 37 #include "utilities/accessFlags.hpp"
38 #ifndef SERIALGC 38 #include "utilities/macros.hpp"
39 #if INCLUDE_ALL_GCS
39 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp" 40 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp"
40 #include "gc_implementation/g1/g1OopClosures.hpp" 41 #include "gc_implementation/g1/g1OopClosures.hpp"
41 #include "gc_implementation/parNew/parOopClosures.hpp" 42 #include "gc_implementation/parNew/parOopClosures.hpp"
42 #endif 43 #endif // INCLUDE_ALL_GCS
43 44
44 // 45 //
45 // A Klass provides: 46 // A Klass provides:
46 // 1: language level class object (method dictionary etc.) 47 // 1: language level class object (method dictionary etc.)
47 // 2: provide vm dispatch behavior for the object 48 // 2: provide vm dispatch behavior for the object
73 // [next_sibling ] link to chain additional subklasses 74 // [next_sibling ] link to chain additional subklasses
74 // [next_link ] 75 // [next_link ]
75 // [class_loader_data] 76 // [class_loader_data]
76 // [modifier_flags] 77 // [modifier_flags]
77 // [access_flags ] 78 // [access_flags ]
78 // [verify_count ] - not in product
79 // [alloc_count ]
80 // [last_biased_lock_bulk_revocation_time] (64 bits) 79 // [last_biased_lock_bulk_revocation_time] (64 bits)
81 // [prototype_header] 80 // [prototype_header]
82 // [biased_lock_revocation_count] 81 // [biased_lock_revocation_count]
82 // [verify_count ] - not in product
83 // [alloc_count ]
83 // [_modified_oops] 84 // [_modified_oops]
84 // [_accumulated_modified_oops] 85 // [_accumulated_modified_oops]
85 // [trace_id] 86 // [trace_id]
86 87
87 88
89 template <class T> class Array; 90 template <class T> class Array;
90 template <class T> class GrowableArray; 91 template <class T> class GrowableArray;
91 class ClassLoaderData; 92 class ClassLoaderData;
92 class klassVtable; 93 class klassVtable;
93 class ParCompactionManager; 94 class ParCompactionManager;
95 class KlassSizeStats;
94 96
95 class Klass : public Metadata { 97 class Klass : public Metadata {
96 friend class VMStructs; 98 friend class VMStructs;
97 protected: 99 protected:
98 // note: put frequently-used fields together at start of klass structure 100 // note: put frequently-used fields together at start of klass structure
166 ClassLoaderData* _class_loader_data; 168 ClassLoaderData* _class_loader_data;
167 169
168 jint _modifier_flags; // Processed access flags, for use by Class.getModifiers. 170 jint _modifier_flags; // Processed access flags, for use by Class.getModifiers.
169 AccessFlags _access_flags; // Access flags. The class/interface distinction is stored here. 171 AccessFlags _access_flags; // Access flags. The class/interface distinction is stored here.
170 172
171 #ifndef PRODUCT
172 int _verify_count; // to avoid redundant verifies
173 #endif
174
175 juint _alloc_count; // allocation profiling support
176
177 // Biased locking implementation and statistics 173 // Biased locking implementation and statistics
178 // (the 64-bit chunk goes first, to avoid some fragmentation) 174 // (the 64-bit chunk goes first, to avoid some fragmentation)
179 jlong _last_biased_lock_bulk_revocation_time; 175 jlong _last_biased_lock_bulk_revocation_time;
180 markOop _prototype_header; // Used when biased locking is both enabled and disabled for this type 176 markOop _prototype_header; // Used when biased locking is both enabled and disabled for this type
181 jint _biased_lock_revocation_count; 177 jint _biased_lock_revocation_count;
178
179 #ifndef PRODUCT
180 int _verify_count; // to avoid redundant verifies
181 #endif
182
183 juint _alloc_count; // allocation profiling support
182 184
183 TRACE_DEFINE_KLASS_TRACE_ID; 185 TRACE_DEFINE_KLASS_TRACE_ID;
184 186
185 // Remembered sets support for the oops in the klasses. 187 // Remembered sets support for the oops in the klasses.
186 jbyte _modified_oops; // Card Table Equivalent (YC/CMS support) 188 jbyte _modified_oops; // Card Table Equivalent (YC/CMS support)
487 // actual oop size of obj in memory 489 // actual oop size of obj in memory
488 virtual int oop_size(oop obj) const = 0; 490 virtual int oop_size(oop obj) const = 0;
489 491
490 // Size of klass in word size. 492 // Size of klass in word size.
491 virtual int size() const = 0; 493 virtual int size() const = 0;
494 #if INCLUDE_SERVICES
495 virtual void collect_statistics(KlassSizeStats *sz) const;
496 #endif
492 497
493 // Returns the Java name for a class (Resource allocated) 498 // Returns the Java name for a class (Resource allocated)
494 // For arrays, this returns the name of the element with a leading '['. 499 // For arrays, this returns the name of the element with a leading '['.
495 // For classes, this returns the name with the package separators 500 // For classes, this returns the name with the package separators
496 // turned into '.'s. 501 // turned into '.'s.
635 virtual int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) = 0; 640 virtual int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) = 0;
636 virtual int oop_oop_iterate_v(oop obj, ExtendedOopClosure* blk) { 641 virtual int oop_oop_iterate_v(oop obj, ExtendedOopClosure* blk) {
637 return oop_oop_iterate(obj, blk); 642 return oop_oop_iterate(obj, blk);
638 } 643 }
639 644
640 #ifndef SERIALGC 645 #if INCLUDE_ALL_GCS
641 // In case we don't have a specialized backward scanner use forward 646 // In case we don't have a specialized backward scanner use forward
642 // iteration. 647 // iteration.
643 virtual int oop_oop_iterate_backwards_v(oop obj, ExtendedOopClosure* blk) { 648 virtual int oop_oop_iterate_backwards_v(oop obj, ExtendedOopClosure* blk) {
644 return oop_oop_iterate_v(obj, blk); 649 return oop_oop_iterate_v(obj, blk);
645 } 650 }
646 #endif // !SERIALGC 651 #endif // INCLUDE_ALL_GCS
647 652
648 // Iterates "blk" over all the oops in "obj" (of type "this") within "mr". 653 // Iterates "blk" over all the oops in "obj" (of type "this") within "mr".
649 // (I don't see why the _m should be required, but without it the Solaris 654 // (I don't see why the _m should be required, but without it the Solaris
650 // C++ gives warning messages about overridings of the "oop_oop_iterate" 655 // C++ gives warning messages about overridings of the "oop_oop_iterate"
651 // defined above "hiding" this virtual function. (DLD, 6/20/00)) */ 656 // defined above "hiding" this virtual function. (DLD, 6/20/00)) */
673 } 678 }
674 679
675 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(Klass_OOP_OOP_ITERATE_DECL) 680 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(Klass_OOP_OOP_ITERATE_DECL)
676 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(Klass_OOP_OOP_ITERATE_DECL) 681 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(Klass_OOP_OOP_ITERATE_DECL)
677 682
678 #ifndef SERIALGC 683 #if INCLUDE_ALL_GCS
679 #define Klass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \ 684 #define Klass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
680 virtual int oop_oop_iterate_backwards##nv_suffix(oop obj, \ 685 virtual int oop_oop_iterate_backwards##nv_suffix(oop obj, \
681 OopClosureType* blk) { \ 686 OopClosureType* blk) { \
682 /* Default implementation reverts to general version. */ \ 687 /* Default implementation reverts to general version. */ \
683 return oop_oop_iterate_backwards_v(obj, blk); \ 688 return oop_oop_iterate_backwards_v(obj, blk); \
684 } 689 }
685 690
686 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(Klass_OOP_OOP_ITERATE_BACKWARDS_DECL) 691 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(Klass_OOP_OOP_ITERATE_BACKWARDS_DECL)
687 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(Klass_OOP_OOP_ITERATE_BACKWARDS_DECL) 692 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(Klass_OOP_OOP_ITERATE_BACKWARDS_DECL)
688 #endif // !SERIALGC 693 #endif // INCLUDE_ALL_GCS
689 694
690 virtual void array_klasses_do(void f(Klass* k)) {} 695 virtual void array_klasses_do(void f(Klass* k)) {}
691 virtual void with_array_klasses_do(void f(Klass* k)); 696 virtual void with_array_klasses_do(void f(Klass* k));
692 697
693 // Return self, except for abstract classes with exactly 1 698 // Return self, except for abstract classes with exactly 1