Mercurial > hg > truffle
annotate src/share/vm/ci/ciInstanceKlass.hpp @ 45:48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
Summary: Use MDO to cache arguments escape state determined by the byte code escape analyzer.
Reviewed-by: never
author | kvn |
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date | Tue, 11 Mar 2008 19:00:38 -0700 |
parents | 52fed2ec0afb |
children | ba764ed4b6f2 |
rev | line source |
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0 | 1 /* |
2 * Copyright 1999-2007 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 */ | |
24 | |
25 // ciInstanceKlass | |
26 // | |
27 // This class represents a klassOop in the HotSpot virtual machine | |
28 // whose Klass part is an instanceKlass. It may or may not | |
29 // be loaded. | |
30 class ciInstanceKlass : public ciKlass { | |
31 CI_PACKAGE_ACCESS | |
32 friend class ciEnv; | |
33 friend class ciMethod; | |
34 friend class ciField; | |
35 friend class ciBytecodeStream; | |
36 | |
37 private: | |
38 bool _is_shared; | |
39 | |
40 jobject _loader; | |
41 jobject _protection_domain; | |
42 | |
43 bool _is_initialized; | |
44 bool _is_linked; | |
45 bool _has_finalizer; | |
46 bool _has_subklass; | |
47 ciFlags _flags; | |
48 jint _nonstatic_field_size; | |
44
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
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49 jint _nonstatic_oop_map_size; |
0 | 50 |
51 // Lazy fields get filled in only upon request. | |
52 ciInstanceKlass* _super; | |
53 ciInstance* _java_mirror; | |
54 | |
55 ciConstantPoolCache* _field_cache; // cached map index->field | |
56 GrowableArray<ciField*>* _nonstatic_fields; | |
57 | |
58 enum { implementors_limit = instanceKlass::implementors_limit }; | |
59 ciInstanceKlass* _implementors[implementors_limit]; | |
60 jint _nof_implementors; | |
61 | |
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62 GrowableArray<ciField*>* _non_static_fields; |
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63 |
0 | 64 protected: |
65 ciInstanceKlass(KlassHandle h_k); | |
66 ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); | |
67 | |
68 instanceKlass* get_instanceKlass() const { | |
69 return (instanceKlass*)get_Klass(); | |
70 } | |
71 | |
72 oop loader(); | |
73 jobject loader_handle(); | |
74 | |
75 oop protection_domain(); | |
76 jobject protection_domain_handle(); | |
77 | |
78 const char* type_string() { return "ciInstanceKlass"; } | |
79 | |
80 void print_impl(outputStream* st); | |
81 | |
82 ciConstantPoolCache* field_cache(); | |
83 | |
84 bool is_shared() { return _is_shared; } | |
85 | |
86 bool compute_shared_is_initialized(); | |
87 bool compute_shared_is_linked(); | |
88 bool compute_shared_has_subklass(); | |
89 int compute_shared_nof_implementors(); | |
90 int compute_nonstatic_fields(); | |
91 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); | |
92 | |
93 public: | |
94 // Has this klass been initialized? | |
95 bool is_initialized() { | |
96 if (_is_shared && !_is_initialized) { | |
97 return is_loaded() && compute_shared_is_initialized(); | |
98 } | |
99 return _is_initialized; | |
100 } | |
101 // Has this klass been linked? | |
102 bool is_linked() { | |
103 if (_is_shared && !_is_linked) { | |
104 return is_loaded() && compute_shared_is_linked(); | |
105 } | |
106 return _is_linked; | |
107 } | |
108 | |
109 // General klass information. | |
110 ciFlags flags() { | |
111 assert(is_loaded(), "must be loaded"); | |
112 return _flags; | |
113 } | |
114 bool has_finalizer() { | |
115 assert(is_loaded(), "must be loaded"); | |
116 return _has_finalizer; } | |
117 bool has_subklass() { | |
118 assert(is_loaded(), "must be loaded"); | |
119 if (_is_shared && !_has_subklass) { | |
120 if (flags().is_final()) { | |
121 return false; | |
122 } else { | |
123 return compute_shared_has_subklass(); | |
124 } | |
125 } | |
126 return _has_subklass; | |
127 } | |
128 jint size_helper() { | |
129 return (Klass::layout_helper_size_in_bytes(layout_helper()) | |
130 >> LogHeapWordSize); | |
131 } | |
132 jint nonstatic_field_size() { | |
133 assert(is_loaded(), "must be loaded"); | |
134 return _nonstatic_field_size; } | |
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52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
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135 jint nonstatic_oop_map_size() { |
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
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136 assert(is_loaded(), "must be loaded"); |
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
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137 return _nonstatic_oop_map_size; } |
0 | 138 ciInstanceKlass* super(); |
139 jint nof_implementors() { | |
140 assert(is_loaded(), "must be loaded"); | |
141 if (_is_shared) return compute_shared_nof_implementors(); | |
142 return _nof_implementors; | |
143 } | |
144 | |
145 ciInstanceKlass* get_canonical_holder(int offset); | |
146 ciField* get_field_by_offset(int field_offset, bool is_static); | |
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6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
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147 |
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6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
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148 GrowableArray<ciField*>* non_static_fields(); |
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
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149 |
0 | 150 // total number of nonstatic fields (including inherited): |
151 int nof_nonstatic_fields() { | |
152 if (_nonstatic_fields == NULL) | |
153 return compute_nonstatic_fields(); | |
154 else | |
155 return _nonstatic_fields->length(); | |
156 } | |
157 // nth nonstatic field (presented by ascending address) | |
158 ciField* nonstatic_field_at(int i) { | |
159 assert(_nonstatic_fields != NULL, ""); | |
160 return _nonstatic_fields->at(i); | |
161 } | |
162 | |
163 ciInstanceKlass* unique_concrete_subklass(); | |
164 bool has_finalizable_subclass(); | |
165 | |
166 bool contains_field_offset(int offset) { | |
167 return (offset/wordSize) >= instanceOopDesc::header_size() | |
168 && (offset/wordSize)-instanceOopDesc::header_size() < nonstatic_field_size(); | |
169 } | |
170 | |
171 // Get the instance of java.lang.Class corresponding to | |
172 // this klass. This instance is used for locking of | |
173 // synchronized static methods of this klass. | |
174 ciInstance* java_mirror(); | |
175 | |
176 // Java access flags | |
177 bool is_public () { return flags().is_public(); } | |
178 bool is_final () { return flags().is_final(); } | |
179 bool is_super () { return flags().is_super(); } | |
180 bool is_interface () { return flags().is_interface(); } | |
181 bool is_abstract () { return flags().is_abstract(); } | |
182 | |
183 ciMethod* find_method(ciSymbol* name, ciSymbol* signature); | |
184 // Note: To find a method from name and type strings, use ciSymbol::make, | |
185 // but consider adding to vmSymbols.hpp instead. | |
186 | |
187 bool is_leaf_type(); | |
188 ciInstanceKlass* implementor(int n); | |
189 | |
190 // Is the defining class loader of this class the default loader? | |
191 bool uses_default_loader(); | |
192 | |
193 bool is_java_lang_Object(); | |
194 | |
195 // What kind of ciObject is this? | |
196 bool is_instance_klass() { return true; } | |
197 bool is_java_klass() { return true; } | |
198 }; |