Mercurial > hg > truffle
annotate src/share/vm/memory/universe.hpp @ 11341:ca5054bbfcdd
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Aug 2013 03:55:16 +0200 |
parents | cedf20e2a655 |
children | 85147f28faba |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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* method); |
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94 bool is_same_method(const Method* 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 and UseCompressedKlassPointers. |
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109 struct NarrowPtrStruct { |
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110 // Base address for oop/klass-within-java-object materialization. |
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111 // NULL if using wide oops/klasses or zero based narrow oops/klasses. |
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112 address _base; |
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113 // Number of shift bits for encoding/decoding narrow ptrs. |
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114 // 0 if using wide ptrs or zero based unscaled narrow ptrs, |
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115 // LogMinObjAlignmentInBytes/LogKlassAlignmentInBytes otherwise. |
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116 int _shift; |
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117 // Generate code with implicit null checks for narrow ptrs. |
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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 |
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178 static LatestMethodOopCache* _loader_addClass_cache; // method for registering loaded classes in class loader vector |
11010 | 179 static LatestMethodOopCache* _pd_implies_cache; // method for checking protection domain attributes |
0 | 180 static ActiveMethodOopsCache* _reflect_invoke_cache; // method for security checks |
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181 // preallocated error objects (no backtrace) |
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182 static oop _out_of_memory_error_java_heap; |
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183 static oop _out_of_memory_error_metaspace; |
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184 static oop _out_of_memory_error_class_metaspace; |
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185 static oop _out_of_memory_error_array_size; |
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186 static oop _out_of_memory_error_gc_overhead_limit; |
0 | 187 |
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188 static Array<int>* _the_empty_int_array; // Canonicalized int array |
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189 static Array<u2>* _the_empty_short_array; // Canonicalized short array |
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190 static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass obj array |
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191 static Array<Method*>* _the_empty_method_array; // Canonicalized method obj array |
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192 |
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193 static Array<Klass*>* _the_array_interfaces_array; |
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194 |
0 | 195 // array of preallocated error objects with backtrace |
196 static objArrayOop _preallocated_out_of_memory_error_array; | |
197 | |
198 // number of preallocated error objects available for use | |
199 static volatile jint _preallocated_out_of_memory_error_avail_count; | |
200 | |
201 static oop _null_ptr_exception_instance; // preallocated exception object | |
202 static oop _arithmetic_exception_instance; // preallocated exception object | |
203 static oop _virtual_machine_error_instance; // preallocated exception object | |
204 // The object used as an exception dummy when exceptions are thrown for | |
205 // the vm thread. | |
206 static oop _vm_exception; | |
207 | |
208 // The particular choice of collected heap. | |
209 static CollectedHeap* _collectedHeap; | |
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210 |
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211 // For UseCompressedOops. |
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212 static struct NarrowPtrStruct _narrow_oop; |
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213 // For UseCompressedKlassPointers. |
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214 static struct NarrowPtrStruct _narrow_klass; |
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215 static address _narrow_ptrs_base; |
0 | 216 |
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217 // Aligned size of the metaspace. |
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218 static size_t _class_metaspace_size; |
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219 |
0 | 220 // array of dummy objects used with +FullGCAlot |
221 debug_only(static objArrayOop _fullgc_alot_dummy_array;) | |
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222 // index of next entry to clear |
0 | 223 debug_only(static int _fullgc_alot_dummy_next;) |
224 | |
225 // Compiler/dispatch support | |
226 static int _base_vtable_size; // Java vtbl size of klass Object (in words) | |
227 | |
228 // Initialization | |
229 static bool _bootstrapping; // true during genesis | |
230 static bool _fully_initialized; // true after universe_init and initialize_vtables called | |
231 | |
232 // the array of preallocated errors with backtraces | |
233 static objArrayOop preallocated_out_of_memory_errors() { return _preallocated_out_of_memory_error_array; } | |
234 | |
235 // generate an out of memory error; if possible using an error with preallocated backtrace; | |
236 // otherwise return the given default error. | |
237 static oop gen_out_of_memory_error(oop default_err); | |
238 | |
239 // Historic gc information | |
240 static size_t _heap_capacity_at_last_gc; | |
241 static size_t _heap_used_at_last_gc; | |
242 | |
243 static jint initialize_heap(); | |
244 static void initialize_basic_type_mirrors(TRAPS); | |
245 static void fixup_mirrors(TRAPS); | |
246 | |
247 static void reinitialize_vtable_of(KlassHandle h_k, TRAPS); | |
248 static void reinitialize_itables(TRAPS); | |
249 static void compute_base_vtable_size(); // compute vtable size of class Object | |
250 | |
251 static void genesis(TRAPS); // Create the initial world | |
252 | |
253 // Mirrors for primitive classes (created eagerly) | |
254 static oop check_mirror(oop m) { | |
255 assert(m != NULL, "mirror not initialized"); | |
256 return m; | |
257 } | |
258 | |
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259 static void set_narrow_oop_base(address base) { |
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260 assert(UseCompressedOops, "no compressed oops?"); |
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261 _narrow_oop._base = base; |
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262 } |
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263 static void set_narrow_klass_base(address base) { |
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264 assert(UseCompressedKlassPointers, "no compressed klass ptrs?"); |
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265 _narrow_klass._base = base; |
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266 } |
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267 static void set_narrow_oop_use_implicit_null_checks(bool use) { |
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268 assert(UseCompressedOops, "no compressed ptrs?"); |
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269 _narrow_oop._use_implicit_null_checks = use; |
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270 } |
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271 static bool reserve_metaspace_helper(bool with_base = false); |
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272 static ReservedHeapSpace reserve_heap_metaspace(size_t heap_size, size_t alignment, bool& contiguous); |
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273 |
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274 static size_t class_metaspace_size() { |
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275 return _class_metaspace_size; |
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276 } |
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277 static void set_class_metaspace_size(size_t metaspace_size) { |
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278 _class_metaspace_size = metaspace_size; |
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279 } |
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280 |
0 | 281 // Debugging |
282 static int _verify_count; // number of verifies done | |
283 // True during call to verify(). Should only be set/cleared in verify(). | |
284 static bool _verify_in_progress; | |
285 | |
286 static void compute_verify_oop_data(); | |
287 | |
288 public: | |
289 // Known classes in the VM | |
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290 static Klass* boolArrayKlassObj() { return _boolArrayKlassObj; } |
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291 static Klass* byteArrayKlassObj() { return _byteArrayKlassObj; } |
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292 static Klass* charArrayKlassObj() { return _charArrayKlassObj; } |
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293 static Klass* intArrayKlassObj() { return _intArrayKlassObj; } |
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294 static Klass* shortArrayKlassObj() { return _shortArrayKlassObj; } |
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295 static Klass* longArrayKlassObj() { return _longArrayKlassObj; } |
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296 static Klass* singleArrayKlassObj() { return _singleArrayKlassObj; } |
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297 static Klass* doubleArrayKlassObj() { return _doubleArrayKlassObj; } |
0 | 298 |
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299 static Klass* objectArrayKlassObj() { |
0 | 300 return _objectArrayKlassObj; |
301 } | |
302 | |
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303 static Klass* typeArrayKlassObj(BasicType t) { |
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304 assert((uint)t < T_VOID+1, err_msg("range check for type: %s", type2name(t))); |
0 | 305 assert(_typeArrayKlassObjs[t] != NULL, "domain check"); |
306 return _typeArrayKlassObjs[t]; | |
307 } | |
308 | |
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309 // Known objects in the VM |
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310 static oop int_mirror() { return check_mirror(_int_mirror); } |
0 | 311 static oop float_mirror() { return check_mirror(_float_mirror); } |
312 static oop double_mirror() { return check_mirror(_double_mirror); } | |
313 static oop byte_mirror() { return check_mirror(_byte_mirror); } | |
314 static oop bool_mirror() { return check_mirror(_bool_mirror); } | |
315 static oop char_mirror() { return check_mirror(_char_mirror); } | |
316 static oop long_mirror() { return check_mirror(_long_mirror); } | |
317 static oop short_mirror() { return check_mirror(_short_mirror); } | |
318 static oop void_mirror() { return check_mirror(_void_mirror); } | |
319 | |
320 // table of same | |
321 static oop _mirrors[T_VOID+1]; | |
322 | |
323 static oop java_mirror(BasicType t) { | |
324 assert((uint)t < T_VOID+1, "range check"); | |
325 return check_mirror(_mirrors[t]); | |
326 } | |
327 static oop main_thread_group() { return _main_thread_group; } | |
328 static void set_main_thread_group(oop group) { _main_thread_group = group;} | |
329 | |
330 static oop system_thread_group() { return _system_thread_group; } | |
331 static void set_system_thread_group(oop group) { _system_thread_group = group;} | |
332 | |
333 static objArrayOop the_empty_class_klass_array () { return _the_empty_class_klass_array; } | |
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334 static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; } |
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335 static oop the_null_string() { return _the_null_string; } |
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336 static oop the_min_jint_string() { return _the_min_jint_string; } |
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337 static Method* finalizer_register_method() { return _finalizer_register_cache->get_Method(); } |
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338 static Method* loader_addClass_method() { return _loader_addClass_cache->get_Method(); } |
11010 | 339 |
340 static Method* protection_domain_implies_method() { return _pd_implies_cache->get_Method(); } | |
0 | 341 static ActiveMethodOopsCache* reflect_invoke_cache() { return _reflect_invoke_cache; } |
11010 | 342 |
0 | 343 static oop null_ptr_exception_instance() { return _null_ptr_exception_instance; } |
344 static oop arithmetic_exception_instance() { return _arithmetic_exception_instance; } | |
345 static oop virtual_machine_error_instance() { return _virtual_machine_error_instance; } | |
346 static oop vm_exception() { return _vm_exception; } | |
347 | |
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348 static Array<int>* the_empty_int_array() { return _the_empty_int_array; } |
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349 static Array<u2>* the_empty_short_array() { return _the_empty_short_array; } |
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350 static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; } |
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351 static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; } |
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352 |
0 | 353 // OutOfMemoryError support. Returns an error with the required message. The returned error |
354 // may or may not have a backtrace. If error has a backtrace then the stack trace is already | |
355 // filled in. | |
356 static oop out_of_memory_error_java_heap() { return gen_out_of_memory_error(_out_of_memory_error_java_heap); } | |
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357 static oop out_of_memory_error_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_metaspace); } |
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358 static oop out_of_memory_error_class_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_class_metaspace); } |
0 | 359 static oop out_of_memory_error_array_size() { return gen_out_of_memory_error(_out_of_memory_error_array_size); } |
360 static oop out_of_memory_error_gc_overhead_limit() { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit); } | |
361 | |
362 // Accessors needed for fast allocation | |
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363 static Klass** boolArrayKlassObj_addr() { return &_boolArrayKlassObj; } |
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364 static Klass** byteArrayKlassObj_addr() { return &_byteArrayKlassObj; } |
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365 static Klass** charArrayKlassObj_addr() { return &_charArrayKlassObj; } |
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366 static Klass** intArrayKlassObj_addr() { return &_intArrayKlassObj; } |
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367 static Klass** shortArrayKlassObj_addr() { return &_shortArrayKlassObj; } |
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368 static Klass** longArrayKlassObj_addr() { return &_longArrayKlassObj; } |
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369 static Klass** singleArrayKlassObj_addr() { return &_singleArrayKlassObj; } |
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370 static Klass** doubleArrayKlassObj_addr() { return &_doubleArrayKlassObj; } |
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371 static Klass** objectArrayKlassObj_addr() { return &_objectArrayKlassObj; } |
0 | 372 |
373 // The particular choice of collected heap. | |
374 static CollectedHeap* heap() { return _collectedHeap; } | |
375 | |
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376 // For UseCompressedOops |
10405 | 377 // Narrow Oop encoding mode: |
378 // 0 - Use 32-bits oops without encoding when | |
379 // NarrowOopHeapBaseMin + heap_size < 4Gb | |
380 // 1 - Use zero based compressed oops with encoding when | |
381 // NarrowOopHeapBaseMin + heap_size < 32Gb | |
382 // 2 - Use compressed oops with heap base + encoding. | |
383 enum NARROW_OOP_MODE { | |
384 UnscaledNarrowOop = 0, | |
385 ZeroBasedNarrowOop = 1, | |
386 HeapBasedNarrowOop = 2 | |
387 }; | |
388 static NARROW_OOP_MODE narrow_oop_mode(); | |
389 static const char* narrow_oop_mode_to_string(NARROW_OOP_MODE mode); | |
390 static char* preferred_heap_base(size_t heap_size, NARROW_OOP_MODE mode); | |
391 static char* preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode); | |
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392 static address narrow_oop_base() { return _narrow_oop._base; } |
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393 static bool is_narrow_oop_base(void* addr) { return (narrow_oop_base() == (address)addr); } |
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394 static int narrow_oop_shift() { return _narrow_oop._shift; } |
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395 static bool narrow_oop_use_implicit_null_checks() { return _narrow_oop._use_implicit_null_checks; } |
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396 |
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397 // For UseCompressedKlassPointers |
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398 static address narrow_klass_base() { return _narrow_klass._base; } |
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399 static bool is_narrow_klass_base(void* addr) { return (narrow_klass_base() == (address)addr); } |
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400 static int narrow_klass_shift() { return _narrow_klass._shift; } |
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401 static bool narrow_klass_use_implicit_null_checks() { return _narrow_klass._use_implicit_null_checks; } |
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402 |
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403 static address* narrow_ptrs_base_addr() { return &_narrow_ptrs_base; } |
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404 static void set_narrow_ptrs_base(address a) { _narrow_ptrs_base = a; } |
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405 static address narrow_ptrs_base() { return _narrow_ptrs_base; } |
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406 |
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407 // this is set in vm_version on sparc (and then reset in universe afaict) |
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408 static void set_narrow_oop_shift(int shift) { |
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409 _narrow_oop._shift = shift; |
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410 } |
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411 |
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412 static void set_narrow_klass_shift(int shift) { |
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413 assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs"); |
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414 _narrow_klass._shift = shift; |
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415 } |
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416 |
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417 // Reserve Java heap and determine CompressedOops mode |
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418 static ReservedSpace reserve_heap(size_t heap_size, size_t alignment); |
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419 |
0 | 420 // Historic gc information |
421 static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; } | |
422 static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; } | |
423 static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; } | |
424 static void update_heap_info_at_gc(); | |
425 | |
426 // Testers | |
427 static bool is_bootstrapping() { return _bootstrapping; } | |
428 static bool is_fully_initialized() { return _fully_initialized; } | |
429 | |
430 static inline bool element_type_should_be_aligned(BasicType type); | |
431 static inline bool field_type_should_be_aligned(BasicType type); | |
432 static bool on_page_boundary(void* addr); | |
433 static bool should_fill_in_stack_trace(Handle throwable); | |
434 static void check_alignment(uintx size, uintx alignment, const char* name); | |
435 | |
436 // Finalizer support. | |
437 static void run_finalizers_on_exit(); | |
438 | |
439 // Iteration | |
440 | |
441 // Apply "f" to the addresses of all the direct heap pointers maintained | |
442 // as static fields of "Universe". | |
443 static void oops_do(OopClosure* f, bool do_all = false); | |
444 | |
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445 // CDS support |
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446 static void serialize(SerializeClosure* f, bool do_all = false); |
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447 |
0 | 448 // Apply "f" to all klasses for basic types (classes not present in |
449 // SystemDictionary). | |
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450 static void basic_type_classes_do(void f(Klass*)); |
0 | 451 |
452 // For sharing -- fill in a list of known vtable pointers. | |
453 static void init_self_patching_vtbl_list(void** list, int count); | |
454 | |
455 // Debugging | |
456 static bool verify_in_progress() { return _verify_in_progress; } | |
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457 static void verify(VerifyOption option, const char* prefix, bool silent = VerifySilently); |
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458 static void verify(const char* prefix, bool silent = VerifySilently) { |
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459 verify(VerifyOption_Default, prefix, silent); |
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460 } |
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461 static void verify(bool silent = VerifySilently) { |
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462 verify("", silent); |
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463 } |
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464 |
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465 static int verify_count() { return _verify_count; } |
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466 // The default behavior is to call print_on() on gclog_or_tty. |
0 | 467 static void print(); |
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468 // The extended parameter determines which method on the heap will |
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469 // be called: print_on() (extended == false) or print_extended_on() |
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470 // (extended == true). |
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471 static void print_on(outputStream* st, bool extended = false); |
0 | 472 static void print_heap_at_SIGBREAK(); |
473 static void print_heap_before_gc() { print_heap_before_gc(gclog_or_tty); } | |
474 static void print_heap_after_gc() { print_heap_after_gc(gclog_or_tty); } | |
4944 | 475 static void print_heap_before_gc(outputStream* st, bool ignore_extended = false); |
476 static void print_heap_after_gc(outputStream* st, bool ignore_extended = false); | |
0 | 477 |
478 // Change the number of dummy objects kept reachable by the full gc dummy | |
479 // array; this should trigger relocation in a sliding compaction collector. | |
480 debug_only(static bool release_fullgc_alot_dummy();) | |
481 // The non-oop pattern (see compiledIC.hpp, etc) | |
482 static void* non_oop_word(); | |
483 | |
484 // Oop verification (see MacroAssembler::verify_oop) | |
485 static uintptr_t verify_oop_mask() PRODUCT_RETURN0; | |
486 static uintptr_t verify_oop_bits() PRODUCT_RETURN0; | |
487 static uintptr_t verify_mark_bits() PRODUCT_RETURN0; | |
488 static uintptr_t verify_mark_mask() PRODUCT_RETURN0; | |
489 | |
490 // Flushing and deoptimization | |
491 static void flush_dependents_on(instanceKlassHandle dependee); | |
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492 static void flush_dependents_on(Handle call_site, Handle method_handle); |
0 | 493 #ifdef HOTSWAP |
494 // Flushing and deoptimization in case of evolution | |
495 static void flush_evol_dependents_on(instanceKlassHandle dependee); | |
496 #endif // HOTSWAP | |
497 // Support for fullspeed debugging | |
498 static void flush_dependents_on_method(methodHandle dependee); | |
499 | |
500 // Compiler support | |
501 static int base_vtable_size() { return _base_vtable_size; } | |
502 }; | |
503 | |
6197 | 504 class DeferredObjAllocEvent : public CHeapObj<mtInternal> { |
0 | 505 private: |
506 oop _oop; | |
507 size_t _bytesize; | |
508 jint _arena_id; | |
509 | |
510 public: | |
511 DeferredObjAllocEvent(const oop o, const size_t s, const jint id) { | |
512 _oop = o; | |
513 _bytesize = s; | |
514 _arena_id = id; | |
515 } | |
516 | |
517 ~DeferredObjAllocEvent() { | |
518 } | |
519 | |
520 jint arena_id() { return _arena_id; } | |
521 size_t bytesize() { return _bytesize; } | |
522 oop get_oop() { return _oop; } | |
523 }; | |
1972 | 524 |
525 #endif // SHARE_VM_MEMORY_UNIVERSE_HPP |