Mercurial > hg > truffle
annotate src/share/vm/memory/universe.hpp @ 6733:fa6e618671d7
7195867: NPG: SAJDI tests fail with sun.jvm.hotspot.types.WrongTypeException: No suitable match for type
Summary: Need to restore the vtable in metadata when we restore the type from the shared archive.
Reviewed-by: acorn, jcoomes, jmasa, jrose
author | coleenp |
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date | Wed, 05 Sep 2012 20:08:08 -0400 |
parents | da91efe96a93 |
children | 2a48c84f1d04 |
rev | line source |
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0 | 1 /* |
6008 | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_MEMORY_UNIVERSE_HPP |
26 #define SHARE_VM_MEMORY_UNIVERSE_HPP | |
27 | |
28 #include "runtime/handles.hpp" | |
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29 #include "utilities/array.hpp" |
1972 | 30 #include "utilities/growableArray.hpp" |
31 | |
0 | 32 // Universe is a name space holding known system classes and objects in the VM. |
33 // | |
34 // Loaded classes are accessible through the SystemDictionary. | |
35 // | |
36 // The object heap is allocated and accessed through Universe, and various allocation | |
37 // support is provided. Allocation by the interpreter and compiled code is done inline | |
38 // and bails out to Scavenge::invoke_and_allocate. | |
39 | |
40 class CollectedHeap; | |
41 class DeferredObjAllocEvent; | |
42 | |
43 | |
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44 // Common parts of a Method* cache. This cache safely interacts with |
0 | 45 // the RedefineClasses API. |
46 // | |
6197 | 47 class CommonMethodOopCache : public CHeapObj<mtClass> { |
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48 // We save the Klass* and the idnum of Method* in order to get |
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49 // the current cached Method*. |
0 | 50 private: |
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51 Klass* _klass; |
0 | 52 int _method_idnum; |
53 | |
54 public: | |
55 CommonMethodOopCache() { _klass = NULL; _method_idnum = -1; } | |
56 ~CommonMethodOopCache() { _klass = NULL; _method_idnum = -1; } | |
57 | |
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58 void init(Klass* k, Method* m, TRAPS); |
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59 Klass* klass() const { return _klass; } |
0 | 60 int method_idnum() const { return _method_idnum; } |
61 | |
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62 // Enhanced Class Redefinition support |
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63 void classes_do(void f(Klass*)) { |
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64 f(_klass); |
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65 } |
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66 |
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67 // CDS support. Replace the klass in this with the archive version |
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68 // could use this for Enhanced Class Redefinition also. |
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69 void serialize(SerializeClosure* f) { |
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70 f->do_ptr((void**)&_klass); |
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71 } |
0 | 72 }; |
73 | |
74 | |
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75 // A helper class for caching a Method* when the user of the cache |
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76 // cares about all versions of the Method*. |
0 | 77 // |
78 class ActiveMethodOopsCache : public CommonMethodOopCache { | |
79 // This subclass adds weak references to older versions of the | |
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80 // Method* and a query method for a Method*. |
0 | 81 |
82 private: | |
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83 // If the cached Method* has not been redefined, then |
0 | 84 // _prev_methods will be NULL. If all of the previous |
85 // versions of the method have been collected, then | |
86 // _prev_methods can have a length of zero. | |
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87 GrowableArray<Method*>* _prev_methods; |
0 | 88 |
89 public: | |
90 ActiveMethodOopsCache() { _prev_methods = NULL; } | |
91 ~ActiveMethodOopsCache(); | |
92 | |
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93 void add_previous_version(Method* const method); |
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94 bool is_same_method(Method* const method) const; |
0 | 95 }; |
96 | |
97 | |
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98 // A helper class for caching a Method* when the user of the cache |
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99 // only cares about the latest version of the Method*. |
0 | 100 // |
101 class LatestMethodOopCache : public CommonMethodOopCache { | |
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102 // This subclass adds a getter method for the latest Method*. |
0 | 103 |
104 public: | |
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105 Method* get_Method(); |
0 | 106 }; |
107 | |
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108 // For UseCompressedOops. |
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109 struct NarrowOopStruct { |
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110 // Base address for oop-within-java-object materialization. |
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111 // NULL if using wide oops or zero based narrow oops. |
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112 address _base; |
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113 // Number of shift bits for encoding/decoding narrow oops. |
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114 // 0 if using wide oops or zero based unscaled narrow oops, |
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115 // LogMinObjAlignmentInBytes otherwise. |
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116 int _shift; |
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117 // Generate code with implicit null checks for narrow oops. |
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118 bool _use_implicit_null_checks; |
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119 }; |
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120 |
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121 enum VerifyOption { |
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122 VerifyOption_Default = 0, |
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123 |
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124 // G1 |
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125 VerifyOption_G1UsePrevMarking = VerifyOption_Default, |
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126 VerifyOption_G1UseNextMarking = VerifyOption_G1UsePrevMarking + 1, |
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127 VerifyOption_G1UseMarkWord = VerifyOption_G1UseNextMarking + 1 |
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128 }; |
0 | 129 |
130 class Universe: AllStatic { | |
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131 // Ugh. Universe is much too friendly. |
0 | 132 friend class MarkSweep; |
133 friend class oopDesc; | |
134 friend class ClassLoader; | |
135 friend class Arguments; | |
136 friend class SystemDictionary; | |
137 friend class VMStructs; | |
138 friend class VM_PopulateDumpSharedSpace; | |
139 | |
140 friend jint universe_init(); | |
141 friend void universe2_init(); | |
142 friend bool universe_post_init(); | |
143 | |
144 private: | |
145 // Known classes in the VM | |
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146 static Klass* _boolArrayKlassObj; |
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147 static Klass* _byteArrayKlassObj; |
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148 static Klass* _charArrayKlassObj; |
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149 static Klass* _intArrayKlassObj; |
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150 static Klass* _shortArrayKlassObj; |
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151 static Klass* _longArrayKlassObj; |
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152 static Klass* _singleArrayKlassObj; |
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153 static Klass* _doubleArrayKlassObj; |
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154 static Klass* _typeArrayKlassObjs[T_VOID+1]; |
0 | 155 |
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156 static Klass* _objectArrayKlassObj; |
0 | 157 |
158 // Known objects in the VM | |
159 | |
160 // Primitive objects | |
161 static oop _int_mirror; | |
162 static oop _float_mirror; | |
163 static oop _double_mirror; | |
164 static oop _byte_mirror; | |
165 static oop _bool_mirror; | |
166 static oop _char_mirror; | |
167 static oop _long_mirror; | |
168 static oop _short_mirror; | |
169 static oop _void_mirror; | |
170 | |
171 static oop _main_thread_group; // Reference to the main thread group object | |
172 static oop _system_thread_group; // Reference to the system thread group object | |
173 | |
174 static objArrayOop _the_empty_class_klass_array; // Canonicalized obj array of type java.lang.Class | |
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175 static oop _the_null_string; // A cache of "null" as a Java string |
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176 static oop _the_min_jint_string; // A cache of "-2147483648" as a Java string |
0 | 177 static LatestMethodOopCache* _finalizer_register_cache; // static method for registering finalizable objects |
178 static ActiveMethodOopsCache* _reflect_invoke_cache; // method for security checks | |
179 static oop _out_of_memory_error_java_heap; // preallocated error object (no backtrace) | |
180 static oop _out_of_memory_error_perm_gen; // preallocated error object (no backtrace) | |
181 static oop _out_of_memory_error_array_size;// preallocated error object (no backtrace) | |
182 static oop _out_of_memory_error_gc_overhead_limit; // preallocated error object (no backtrace) | |
183 | |
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184 static Array<int>* _the_empty_int_array; // Canonicalized int array |
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185 static Array<u2>* _the_empty_short_array; // Canonicalized short array |
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186 static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass obj array |
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187 static Array<Method*>* _the_empty_method_array; // Canonicalized method obj array |
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188 |
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189 static Array<Klass*>* _the_array_interfaces_array; |
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190 |
0 | 191 // array of preallocated error objects with backtrace |
192 static objArrayOop _preallocated_out_of_memory_error_array; | |
193 | |
194 // number of preallocated error objects available for use | |
195 static volatile jint _preallocated_out_of_memory_error_avail_count; | |
196 | |
197 static oop _null_ptr_exception_instance; // preallocated exception object | |
198 static oop _arithmetic_exception_instance; // preallocated exception object | |
199 static oop _virtual_machine_error_instance; // preallocated exception object | |
200 // The object used as an exception dummy when exceptions are thrown for | |
201 // the vm thread. | |
202 static oop _vm_exception; | |
203 | |
204 // The particular choice of collected heap. | |
205 static CollectedHeap* _collectedHeap; | |
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206 |
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207 // For UseCompressedOops. |
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208 static struct NarrowOopStruct _narrow_oop; |
0 | 209 |
210 // array of dummy objects used with +FullGCAlot | |
211 debug_only(static objArrayOop _fullgc_alot_dummy_array;) | |
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212 // index of next entry to clear |
0 | 213 debug_only(static int _fullgc_alot_dummy_next;) |
214 | |
215 // Compiler/dispatch support | |
216 static int _base_vtable_size; // Java vtbl size of klass Object (in words) | |
217 | |
218 // Initialization | |
219 static bool _bootstrapping; // true during genesis | |
220 static bool _fully_initialized; // true after universe_init and initialize_vtables called | |
221 | |
222 // the array of preallocated errors with backtraces | |
223 static objArrayOop preallocated_out_of_memory_errors() { return _preallocated_out_of_memory_error_array; } | |
224 | |
225 // generate an out of memory error; if possible using an error with preallocated backtrace; | |
226 // otherwise return the given default error. | |
227 static oop gen_out_of_memory_error(oop default_err); | |
228 | |
229 // Historic gc information | |
230 static size_t _heap_capacity_at_last_gc; | |
231 static size_t _heap_used_at_last_gc; | |
232 | |
233 static jint initialize_heap(); | |
234 static void initialize_basic_type_mirrors(TRAPS); | |
235 static void fixup_mirrors(TRAPS); | |
236 | |
237 static void reinitialize_vtable_of(KlassHandle h_k, TRAPS); | |
238 static void reinitialize_itables(TRAPS); | |
239 static void compute_base_vtable_size(); // compute vtable size of class Object | |
240 | |
241 static void genesis(TRAPS); // Create the initial world | |
242 | |
243 // Mirrors for primitive classes (created eagerly) | |
244 static oop check_mirror(oop m) { | |
245 assert(m != NULL, "mirror not initialized"); | |
246 return m; | |
247 } | |
248 | |
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249 // Narrow Oop encoding mode: |
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250 // 0 - Use 32-bits oops without encoding when |
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251 // NarrowOopHeapBaseMin + heap_size < 4Gb |
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252 // 1 - Use zero based compressed oops with encoding when |
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253 // NarrowOopHeapBaseMin + heap_size < 32Gb |
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254 // 2 - Use compressed oops with heap base + encoding. |
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255 enum NARROW_OOP_MODE { |
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256 UnscaledNarrowOop = 0, |
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257 ZeroBasedNarrowOop = 1, |
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258 HeapBasedNarrowOop = 2 |
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259 }; |
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260 static char* preferred_heap_base(size_t heap_size, NARROW_OOP_MODE mode); |
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261 static void set_narrow_oop_base(address base) { _narrow_oop._base = base; } |
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262 static void set_narrow_oop_use_implicit_null_checks(bool use) { _narrow_oop._use_implicit_null_checks = use; } |
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263 |
0 | 264 // Debugging |
265 static int _verify_count; // number of verifies done | |
266 // True during call to verify(). Should only be set/cleared in verify(). | |
267 static bool _verify_in_progress; | |
268 | |
269 static void compute_verify_oop_data(); | |
270 | |
271 public: | |
272 // Known classes in the VM | |
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273 static Klass* boolArrayKlassObj() { return _boolArrayKlassObj; } |
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274 static Klass* byteArrayKlassObj() { return _byteArrayKlassObj; } |
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275 static Klass* charArrayKlassObj() { return _charArrayKlassObj; } |
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276 static Klass* intArrayKlassObj() { return _intArrayKlassObj; } |
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277 static Klass* shortArrayKlassObj() { return _shortArrayKlassObj; } |
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278 static Klass* longArrayKlassObj() { return _longArrayKlassObj; } |
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279 static Klass* singleArrayKlassObj() { return _singleArrayKlassObj; } |
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280 static Klass* doubleArrayKlassObj() { return _doubleArrayKlassObj; } |
0 | 281 |
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282 static Klass* objectArrayKlassObj() { |
0 | 283 return _objectArrayKlassObj; |
284 } | |
285 | |
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286 static Klass* typeArrayKlassObj(BasicType t) { |
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287 assert((uint)t < T_VOID+1, err_msg("range check for type: %s", type2name(t))); |
0 | 288 assert(_typeArrayKlassObjs[t] != NULL, "domain check"); |
289 return _typeArrayKlassObjs[t]; | |
290 } | |
291 | |
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292 // Known objects in the VM |
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293 static oop int_mirror() { return check_mirror(_int_mirror); } |
0 | 294 static oop float_mirror() { return check_mirror(_float_mirror); } |
295 static oop double_mirror() { return check_mirror(_double_mirror); } | |
296 static oop byte_mirror() { return check_mirror(_byte_mirror); } | |
297 static oop bool_mirror() { return check_mirror(_bool_mirror); } | |
298 static oop char_mirror() { return check_mirror(_char_mirror); } | |
299 static oop long_mirror() { return check_mirror(_long_mirror); } | |
300 static oop short_mirror() { return check_mirror(_short_mirror); } | |
301 static oop void_mirror() { return check_mirror(_void_mirror); } | |
302 | |
303 // table of same | |
304 static oop _mirrors[T_VOID+1]; | |
305 | |
306 static oop java_mirror(BasicType t) { | |
307 assert((uint)t < T_VOID+1, "range check"); | |
308 return check_mirror(_mirrors[t]); | |
309 } | |
310 static oop main_thread_group() { return _main_thread_group; } | |
311 static void set_main_thread_group(oop group) { _main_thread_group = group;} | |
312 | |
313 static oop system_thread_group() { return _system_thread_group; } | |
314 static void set_system_thread_group(oop group) { _system_thread_group = group;} | |
315 | |
316 static objArrayOop the_empty_class_klass_array () { return _the_empty_class_klass_array; } | |
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317 static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; } |
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318 static oop the_null_string() { return _the_null_string; } |
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319 static oop the_min_jint_string() { return _the_min_jint_string; } |
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320 static Method* finalizer_register_method() { return _finalizer_register_cache->get_Method(); } |
0 | 321 static ActiveMethodOopsCache* reflect_invoke_cache() { return _reflect_invoke_cache; } |
322 static oop null_ptr_exception_instance() { return _null_ptr_exception_instance; } | |
323 static oop arithmetic_exception_instance() { return _arithmetic_exception_instance; } | |
324 static oop virtual_machine_error_instance() { return _virtual_machine_error_instance; } | |
325 static oop vm_exception() { return _vm_exception; } | |
326 | |
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327 static Array<int>* the_empty_int_array() { return _the_empty_int_array; } |
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328 static Array<u2>* the_empty_short_array() { return _the_empty_short_array; } |
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329 static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; } |
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330 static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; } |
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331 |
0 | 332 // OutOfMemoryError support. Returns an error with the required message. The returned error |
333 // may or may not have a backtrace. If error has a backtrace then the stack trace is already | |
334 // filled in. | |
335 static oop out_of_memory_error_java_heap() { return gen_out_of_memory_error(_out_of_memory_error_java_heap); } | |
336 static oop out_of_memory_error_perm_gen() { return gen_out_of_memory_error(_out_of_memory_error_perm_gen); } | |
337 static oop out_of_memory_error_array_size() { return gen_out_of_memory_error(_out_of_memory_error_array_size); } | |
338 static oop out_of_memory_error_gc_overhead_limit() { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit); } | |
339 | |
340 // Accessors needed for fast allocation | |
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341 static Klass** boolArrayKlassObj_addr() { return &_boolArrayKlassObj; } |
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342 static Klass** byteArrayKlassObj_addr() { return &_byteArrayKlassObj; } |
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343 static Klass** charArrayKlassObj_addr() { return &_charArrayKlassObj; } |
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344 static Klass** intArrayKlassObj_addr() { return &_intArrayKlassObj; } |
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345 static Klass** shortArrayKlassObj_addr() { return &_shortArrayKlassObj; } |
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346 static Klass** longArrayKlassObj_addr() { return &_longArrayKlassObj; } |
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347 static Klass** singleArrayKlassObj_addr() { return &_singleArrayKlassObj; } |
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348 static Klass** doubleArrayKlassObj_addr() { return &_doubleArrayKlassObj; } |
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349 static Klass** objectArrayKlassObj_addr() { return &_objectArrayKlassObj; } |
0 | 350 |
351 // The particular choice of collected heap. | |
352 static CollectedHeap* heap() { return _collectedHeap; } | |
353 | |
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354 // For UseCompressedOops |
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355 static address* narrow_oop_base_addr() { return &_narrow_oop._base; } |
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356 static address narrow_oop_base() { return _narrow_oop._base; } |
858 | 357 static bool is_narrow_oop_base(void* addr) { return (narrow_oop_base() == (address)addr); } |
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358 static int narrow_oop_shift() { return _narrow_oop._shift; } |
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359 static bool narrow_oop_use_implicit_null_checks() { return _narrow_oop._use_implicit_null_checks; } |
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360 |
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361 // this is set in vm_version on sparc (and then reset in universe afaict) |
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362 static void set_narrow_oop_shift(int shift) { _narrow_oop._shift = shift; } |
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363 |
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364 // Reserve Java heap and determine CompressedOops mode |
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365 static ReservedSpace reserve_heap(size_t heap_size, size_t alignment); |
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366 |
0 | 367 // Historic gc information |
368 static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; } | |
369 static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; } | |
370 static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; } | |
371 static void update_heap_info_at_gc(); | |
372 | |
373 // Testers | |
374 static bool is_bootstrapping() { return _bootstrapping; } | |
375 static bool is_fully_initialized() { return _fully_initialized; } | |
376 | |
377 static inline bool element_type_should_be_aligned(BasicType type); | |
378 static inline bool field_type_should_be_aligned(BasicType type); | |
379 static bool on_page_boundary(void* addr); | |
380 static bool should_fill_in_stack_trace(Handle throwable); | |
381 static void check_alignment(uintx size, uintx alignment, const char* name); | |
382 | |
383 // Finalizer support. | |
384 static void run_finalizers_on_exit(); | |
385 | |
386 // Iteration | |
387 | |
388 // Apply "f" to the addresses of all the direct heap pointers maintained | |
389 // as static fields of "Universe". | |
390 static void oops_do(OopClosure* f, bool do_all = false); | |
391 | |
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392 // CDS support |
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393 static void serialize(SerializeClosure* f, bool do_all = false); |
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394 |
0 | 395 // Apply "f" to all klasses for basic types (classes not present in |
396 // SystemDictionary). | |
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397 static void basic_type_classes_do(void f(Klass*)); |
0 | 398 |
399 // For sharing -- fill in a list of known vtable pointers. | |
400 static void init_self_patching_vtbl_list(void** list, int count); | |
401 | |
402 // Debugging | |
403 static bool verify_in_progress() { return _verify_in_progress; } | |
6008 | 404 static void verify(bool silent = false, |
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405 VerifyOption option = VerifyOption_Default ); |
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406 static int verify_count() { return _verify_count; } |
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407 // The default behavior is to call print_on() on gclog_or_tty. |
0 | 408 static void print(); |
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409 // The extended parameter determines which method on the heap will |
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410 // be called: print_on() (extended == false) or print_extended_on() |
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411 // (extended == true). |
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412 static void print_on(outputStream* st, bool extended = false); |
0 | 413 static void print_heap_at_SIGBREAK(); |
414 static void print_heap_before_gc() { print_heap_before_gc(gclog_or_tty); } | |
415 static void print_heap_after_gc() { print_heap_after_gc(gclog_or_tty); } | |
4944 | 416 static void print_heap_before_gc(outputStream* st, bool ignore_extended = false); |
417 static void print_heap_after_gc(outputStream* st, bool ignore_extended = false); | |
0 | 418 |
419 // Change the number of dummy objects kept reachable by the full gc dummy | |
420 // array; this should trigger relocation in a sliding compaction collector. | |
421 debug_only(static bool release_fullgc_alot_dummy();) | |
422 // The non-oop pattern (see compiledIC.hpp, etc) | |
423 static void* non_oop_word(); | |
424 | |
425 // Oop verification (see MacroAssembler::verify_oop) | |
426 static uintptr_t verify_oop_mask() PRODUCT_RETURN0; | |
427 static uintptr_t verify_oop_bits() PRODUCT_RETURN0; | |
428 static uintptr_t verify_mark_bits() PRODUCT_RETURN0; | |
429 static uintptr_t verify_mark_mask() PRODUCT_RETURN0; | |
430 | |
431 // Flushing and deoptimization | |
432 static void flush_dependents_on(instanceKlassHandle dependee); | |
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433 static void flush_dependents_on(Handle call_site, Handle method_handle); |
0 | 434 #ifdef HOTSWAP |
435 // Flushing and deoptimization in case of evolution | |
436 static void flush_evol_dependents_on(instanceKlassHandle dependee); | |
437 #endif // HOTSWAP | |
438 // Support for fullspeed debugging | |
439 static void flush_dependents_on_method(methodHandle dependee); | |
440 | |
441 // Compiler support | |
442 static int base_vtable_size() { return _base_vtable_size; } | |
443 }; | |
444 | |
6197 | 445 class DeferredObjAllocEvent : public CHeapObj<mtInternal> { |
0 | 446 private: |
447 oop _oop; | |
448 size_t _bytesize; | |
449 jint _arena_id; | |
450 | |
451 public: | |
452 DeferredObjAllocEvent(const oop o, const size_t s, const jint id) { | |
453 _oop = o; | |
454 _bytesize = s; | |
455 _arena_id = id; | |
456 } | |
457 | |
458 ~DeferredObjAllocEvent() { | |
459 } | |
460 | |
461 jint arena_id() { return _arena_id; } | |
462 size_t bytesize() { return _bytesize; } | |
463 oop get_oop() { return _oop; } | |
464 }; | |
1972 | 465 |
466 #endif // SHARE_VM_MEMORY_UNIVERSE_HPP |