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comparison src/share/vm/runtime/fieldDescriptor.hpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents 1d7922586cf6
children 18fb7da42534
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, 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.
23 */ 23 */
24 24
25 #ifndef SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP 25 #ifndef SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP
26 #define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP 26 #define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP
27 27
28 #include "oops/constantPoolOop.hpp" 28 #include "oops/constantPool.hpp"
29 #include "oops/klassOop.hpp"
30 #include "oops/oop.inline.hpp"
31 #include "oops/symbol.hpp" 29 #include "oops/symbol.hpp"
32 #include "runtime/fieldType.hpp" 30 #include "runtime/fieldType.hpp"
33 #include "utilities/accessFlags.hpp" 31 #include "utilities/accessFlags.hpp"
34 #include "utilities/constantTag.hpp" 32 #include "utilities/constantTag.hpp"
35 33
43 int _index; // the field index 41 int _index; // the field index
44 constantPoolHandle _cp; 42 constantPoolHandle _cp;
45 43
46 // update the access_flags for the field in the klass 44 // update the access_flags for the field in the klass
47 void update_klass_field_access_flag() { 45 void update_klass_field_access_flag() {
48 instanceKlass* ik = instanceKlass::cast(field_holder()); 46 InstanceKlass* ik = InstanceKlass::cast(field_holder());
49 ik->field(index())->set_access_flags(_access_flags.as_short()); 47 ik->field(index())->set_access_flags(_access_flags.as_short());
50 } 48 }
51 49
52 FieldInfo* field() const { 50 FieldInfo* field() const {
53 instanceKlass* ik = instanceKlass::cast(field_holder()); 51 InstanceKlass* ik = InstanceKlass::cast(field_holder());
54 return ik->field(_index); 52 return ik->field(_index);
55 } 53 }
56 54
57 public: 55 public:
58 Symbol* name() const { 56 Symbol* name() const {
59 return field()->name(_cp); 57 return field()->name(_cp);
60 } 58 }
61 Symbol* signature() const { 59 Symbol* signature() const {
62 return field()->signature(_cp); 60 return field()->signature(_cp);
63 } 61 }
64 klassOop field_holder() const { return _cp->pool_holder(); } 62 Klass* field_holder() const { return _cp->pool_holder(); }
65 constantPoolOop constants() const { return _cp(); } 63 ConstantPool* constants() const { return _cp(); }
66 AccessFlags access_flags() const { return _access_flags; } 64 AccessFlags access_flags() const { return _access_flags; }
67 oop loader() const; 65 oop loader() const;
68 // Offset (in words) of field from start of instanceOop / klassOop 66 // Offset (in words) of field from start of instanceOop / Klass*
69 int offset() const { return field()->offset(); } 67 int offset() const { return field()->offset(); }
70 Symbol* generic_signature() const; 68 Symbol* generic_signature() const;
71 int index() const { return _index; } 69 int index() const { return _index; }
72 typeArrayOop annotations() const; 70 AnnotationArray* annotations() const;
73 71
74 // Initial field value 72 // Initial field value
75 bool has_initial_value() const { return field()->initval_index() != 0; } 73 bool has_initial_value() const { return field()->initval_index() != 0; }
76 int initial_value_index() const { return field()->initval_index(); } 74 int initial_value_index() const { return field()->initval_index(); }
77 constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() 75 constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double()
111 _access_flags.set_is_field_modification_watched(value); 109 _access_flags.set_is_field_modification_watched(value);
112 update_klass_field_access_flag(); 110 update_klass_field_access_flag();
113 } 111 }
114 112
115 // Initialization 113 // Initialization
116 void initialize(klassOop k, int index); 114 void initialize(InstanceKlass* ik, int index);
117 115
118 // Print 116 // Print
119 void print() { print_on(tty); } 117 void print() { print_on(tty); }
120 void print_on(outputStream* st) const PRODUCT_RETURN; 118 void print_on(outputStream* st) const PRODUCT_RETURN;
121 void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; 119 void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN;