Mercurial > hg > truffle
annotate src/share/vm/memory/universe.hpp @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
| author | ehelin |
|---|---|
| date | Mon, 12 Aug 2013 17:37:02 +0200 |
| parents | 4c84d351cca9 |
| children | da051ce490eb |
| rev | line source |
|---|---|
| 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 // A helper class for caching a Method* when the user of the cache |
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45 // only cares about the latest version of the Method*. This cache safely |
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46 // interacts with the RedefineClasses API. |
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47 |
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48 class LatestMethodCache : public CHeapObj<mtClass> { |
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49 // We save the Klass* and the idnum of Method* in order to get |
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50 // the current cached Method*. |
| 0 | 51 private: |
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52 Klass* _klass; |
| 0 | 53 int _method_idnum; |
| 54 | |
| 55 public: | |
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56 LatestMethodCache() { _klass = NULL; _method_idnum = -1; } |
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57 ~LatestMethodCache() { _klass = NULL; _method_idnum = -1; } |
| 0 | 58 |
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59 void init(Klass* k, Method* m); |
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60 Klass* klass() const { return _klass; } |
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61 int method_idnum() const { return _method_idnum; } |
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62 |
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63 Method* get_method(); |
| 0 | 64 |
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65 // Enhanced Class Redefinition support |
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66 void classes_do(void f(Klass*)) { |
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67 f(_klass); |
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68 } |
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69 |
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70 // CDS support. Replace the klass in this with the archive version |
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71 // could use this for Enhanced Class Redefinition also. |
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72 void serialize(SerializeClosure* f) { |
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73 f->do_ptr((void**)&_klass); |
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74 } |
| 0 | 75 }; |
| 76 | |
| 77 | |
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78 // For UseCompressedOops. |
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79 struct NarrowPtrStruct { |
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80 // Base address for oop-within-java-object materialization. |
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81 // NULL if using wide oops or zero based narrow oops. |
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82 address _base; |
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83 // Number of shift bits for encoding/decoding narrow ptrs. |
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84 // 0 if using wide ptrs or zero based unscaled narrow ptrs, |
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85 // LogMinObjAlignmentInBytes/LogKlassAlignmentInBytes otherwise. |
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86 int _shift; |
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87 // Generate code with implicit null checks for narrow ptrs. |
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88 bool _use_implicit_null_checks; |
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89 }; |
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90 |
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91 enum VerifyOption { |
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92 VerifyOption_Default = 0, |
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93 |
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94 // G1 |
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95 VerifyOption_G1UsePrevMarking = VerifyOption_Default, |
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96 VerifyOption_G1UseNextMarking = VerifyOption_G1UsePrevMarking + 1, |
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97 VerifyOption_G1UseMarkWord = VerifyOption_G1UseNextMarking + 1 |
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98 }; |
| 0 | 99 |
| 100 class Universe: AllStatic { | |
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101 // Ugh. Universe is much too friendly. |
| 0 | 102 friend class MarkSweep; |
| 103 friend class oopDesc; | |
| 104 friend class ClassLoader; | |
| 105 friend class Arguments; | |
| 106 friend class SystemDictionary; | |
| 107 friend class VMStructs; | |
| 108 friend class VM_PopulateDumpSharedSpace; | |
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109 friend class Metaspace; |
| 0 | 110 |
| 111 friend jint universe_init(); | |
| 112 friend void universe2_init(); | |
| 113 friend bool universe_post_init(); | |
| 114 | |
| 115 private: | |
| 116 // Known classes in the VM | |
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117 static Klass* _boolArrayKlassObj; |
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118 static Klass* _byteArrayKlassObj; |
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119 static Klass* _charArrayKlassObj; |
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120 static Klass* _intArrayKlassObj; |
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121 static Klass* _shortArrayKlassObj; |
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122 static Klass* _longArrayKlassObj; |
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123 static Klass* _singleArrayKlassObj; |
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124 static Klass* _doubleArrayKlassObj; |
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125 static Klass* _typeArrayKlassObjs[T_VOID+1]; |
| 0 | 126 |
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127 static Klass* _objectArrayKlassObj; |
| 0 | 128 |
| 129 // Known objects in the VM | |
| 130 | |
| 131 // Primitive objects | |
| 132 static oop _int_mirror; | |
| 133 static oop _float_mirror; | |
| 134 static oop _double_mirror; | |
| 135 static oop _byte_mirror; | |
| 136 static oop _bool_mirror; | |
| 137 static oop _char_mirror; | |
| 138 static oop _long_mirror; | |
| 139 static oop _short_mirror; | |
| 140 static oop _void_mirror; | |
| 141 | |
| 142 static oop _main_thread_group; // Reference to the main thread group object | |
| 143 static oop _system_thread_group; // Reference to the system thread group object | |
| 144 | |
| 145 static objArrayOop _the_empty_class_klass_array; // Canonicalized obj array of type java.lang.Class | |
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146 static oop _the_null_string; // A cache of "null" as a Java string |
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147 static oop _the_min_jint_string; // A cache of "-2147483648" as a Java string |
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148 static LatestMethodCache* _finalizer_register_cache; // static method for registering finalizable objects |
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149 static LatestMethodCache* _loader_addClass_cache; // method for registering loaded classes in class loader vector |
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150 static LatestMethodCache* _pd_implies_cache; // method for checking protection domain attributes |
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151 |
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152 // preallocated error objects (no backtrace) |
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153 static oop _out_of_memory_error_java_heap; |
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154 static oop _out_of_memory_error_metaspace; |
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155 static oop _out_of_memory_error_class_metaspace; |
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156 static oop _out_of_memory_error_array_size; |
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157 static oop _out_of_memory_error_gc_overhead_limit; |
| 0 | 158 |
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159 static Array<int>* _the_empty_int_array; // Canonicalized int array |
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160 static Array<u2>* _the_empty_short_array; // Canonicalized short array |
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161 static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass obj array |
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162 static Array<Method*>* _the_empty_method_array; // Canonicalized method obj array |
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163 |
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164 static Array<Klass*>* _the_array_interfaces_array; |
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165 |
| 0 | 166 // array of preallocated error objects with backtrace |
| 167 static objArrayOop _preallocated_out_of_memory_error_array; | |
| 168 | |
| 169 // number of preallocated error objects available for use | |
| 170 static volatile jint _preallocated_out_of_memory_error_avail_count; | |
| 171 | |
| 172 static oop _null_ptr_exception_instance; // preallocated exception object | |
| 173 static oop _arithmetic_exception_instance; // preallocated exception object | |
| 174 static oop _virtual_machine_error_instance; // preallocated exception object | |
| 175 // The object used as an exception dummy when exceptions are thrown for | |
| 176 // the vm thread. | |
| 177 static oop _vm_exception; | |
| 178 | |
| 179 // The particular choice of collected heap. | |
| 180 static CollectedHeap* _collectedHeap; | |
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181 |
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182 // For UseCompressedOops. |
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183 static struct NarrowPtrStruct _narrow_oop; |
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184 // For UseCompressedClassPointers. |
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185 static struct NarrowPtrStruct _narrow_klass; |
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186 static address _narrow_ptrs_base; |
| 0 | 187 |
| 188 // array of dummy objects used with +FullGCAlot | |
| 189 debug_only(static objArrayOop _fullgc_alot_dummy_array;) | |
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190 // index of next entry to clear |
| 0 | 191 debug_only(static int _fullgc_alot_dummy_next;) |
| 192 | |
| 193 // Compiler/dispatch support | |
| 194 static int _base_vtable_size; // Java vtbl size of klass Object (in words) | |
| 195 | |
| 196 // Initialization | |
| 197 static bool _bootstrapping; // true during genesis | |
| 198 static bool _fully_initialized; // true after universe_init and initialize_vtables called | |
| 199 | |
| 200 // the array of preallocated errors with backtraces | |
| 201 static objArrayOop preallocated_out_of_memory_errors() { return _preallocated_out_of_memory_error_array; } | |
| 202 | |
| 203 // generate an out of memory error; if possible using an error with preallocated backtrace; | |
| 204 // otherwise return the given default error. | |
| 205 static oop gen_out_of_memory_error(oop default_err); | |
| 206 | |
| 207 // Historic gc information | |
| 208 static size_t _heap_capacity_at_last_gc; | |
| 209 static size_t _heap_used_at_last_gc; | |
| 210 | |
| 211 static jint initialize_heap(); | |
| 212 static void initialize_basic_type_mirrors(TRAPS); | |
| 213 static void fixup_mirrors(TRAPS); | |
| 214 | |
| 215 static void reinitialize_vtable_of(KlassHandle h_k, TRAPS); | |
| 216 static void reinitialize_itables(TRAPS); | |
| 217 static void compute_base_vtable_size(); // compute vtable size of class Object | |
| 218 | |
| 219 static void genesis(TRAPS); // Create the initial world | |
| 220 | |
| 221 // Mirrors for primitive classes (created eagerly) | |
| 222 static oop check_mirror(oop m) { | |
| 223 assert(m != NULL, "mirror not initialized"); | |
| 224 return m; | |
| 225 } | |
| 226 | |
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227 static void set_narrow_oop_base(address base) { |
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228 assert(UseCompressedOops, "no compressed oops?"); |
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229 _narrow_oop._base = base; |
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230 } |
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231 static void set_narrow_klass_base(address base) { |
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232 assert(UseCompressedClassPointers, "no compressed klass ptrs?"); |
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233 _narrow_klass._base = base; |
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234 } |
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235 static void set_narrow_oop_use_implicit_null_checks(bool use) { |
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236 assert(UseCompressedOops, "no compressed ptrs?"); |
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237 _narrow_oop._use_implicit_null_checks = use; |
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238 } |
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239 |
| 0 | 240 // Debugging |
| 241 static int _verify_count; // number of verifies done | |
| 242 // True during call to verify(). Should only be set/cleared in verify(). | |
| 243 static bool _verify_in_progress; | |
| 244 | |
| 245 static void compute_verify_oop_data(); | |
| 246 | |
| 247 public: | |
| 248 // Known classes in the VM | |
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249 static Klass* boolArrayKlassObj() { return _boolArrayKlassObj; } |
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250 static Klass* byteArrayKlassObj() { return _byteArrayKlassObj; } |
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251 static Klass* charArrayKlassObj() { return _charArrayKlassObj; } |
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252 static Klass* intArrayKlassObj() { return _intArrayKlassObj; } |
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253 static Klass* shortArrayKlassObj() { return _shortArrayKlassObj; } |
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254 static Klass* longArrayKlassObj() { return _longArrayKlassObj; } |
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255 static Klass* singleArrayKlassObj() { return _singleArrayKlassObj; } |
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256 static Klass* doubleArrayKlassObj() { return _doubleArrayKlassObj; } |
| 0 | 257 |
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258 static Klass* objectArrayKlassObj() { |
| 0 | 259 return _objectArrayKlassObj; |
| 260 } | |
| 261 | |
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262 static Klass* typeArrayKlassObj(BasicType t) { |
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263 assert((uint)t < T_VOID+1, err_msg("range check for type: %s", type2name(t))); |
| 0 | 264 assert(_typeArrayKlassObjs[t] != NULL, "domain check"); |
| 265 return _typeArrayKlassObjs[t]; | |
| 266 } | |
| 267 | |
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268 // Known objects in the VM |
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269 static oop int_mirror() { return check_mirror(_int_mirror); } |
| 0 | 270 static oop float_mirror() { return check_mirror(_float_mirror); } |
| 271 static oop double_mirror() { return check_mirror(_double_mirror); } | |
| 272 static oop byte_mirror() { return check_mirror(_byte_mirror); } | |
| 273 static oop bool_mirror() { return check_mirror(_bool_mirror); } | |
| 274 static oop char_mirror() { return check_mirror(_char_mirror); } | |
| 275 static oop long_mirror() { return check_mirror(_long_mirror); } | |
| 276 static oop short_mirror() { return check_mirror(_short_mirror); } | |
| 277 static oop void_mirror() { return check_mirror(_void_mirror); } | |
| 278 | |
| 279 // table of same | |
| 280 static oop _mirrors[T_VOID+1]; | |
| 281 | |
| 282 static oop java_mirror(BasicType t) { | |
| 283 assert((uint)t < T_VOID+1, "range check"); | |
| 284 return check_mirror(_mirrors[t]); | |
| 285 } | |
| 286 static oop main_thread_group() { return _main_thread_group; } | |
| 287 static void set_main_thread_group(oop group) { _main_thread_group = group;} | |
| 288 | |
| 289 static oop system_thread_group() { return _system_thread_group; } | |
| 290 static void set_system_thread_group(oop group) { _system_thread_group = group;} | |
| 291 | |
| 292 static objArrayOop the_empty_class_klass_array () { return _the_empty_class_klass_array; } | |
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293 static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; } |
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294 static oop the_null_string() { return _the_null_string; } |
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295 static oop the_min_jint_string() { return _the_min_jint_string; } |
| 11010 | 296 |
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297 static Method* finalizer_register_method() { return _finalizer_register_cache->get_method(); } |
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298 static Method* loader_addClass_method() { return _loader_addClass_cache->get_method(); } |
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299 |
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300 static Method* protection_domain_implies_method() { return _pd_implies_cache->get_method(); } |
| 11010 | 301 |
| 0 | 302 static oop null_ptr_exception_instance() { return _null_ptr_exception_instance; } |
| 303 static oop arithmetic_exception_instance() { return _arithmetic_exception_instance; } | |
| 304 static oop virtual_machine_error_instance() { return _virtual_machine_error_instance; } | |
| 305 static oop vm_exception() { return _vm_exception; } | |
| 306 | |
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307 static Array<int>* the_empty_int_array() { return _the_empty_int_array; } |
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308 static Array<u2>* the_empty_short_array() { return _the_empty_short_array; } |
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309 static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; } |
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310 static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; } |
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311 |
| 0 | 312 // OutOfMemoryError support. Returns an error with the required message. The returned error |
| 313 // may or may not have a backtrace. If error has a backtrace then the stack trace is already | |
| 314 // filled in. | |
| 315 static oop out_of_memory_error_java_heap() { return gen_out_of_memory_error(_out_of_memory_error_java_heap); } | |
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316 static oop out_of_memory_error_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_metaspace); } |
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317 static oop out_of_memory_error_class_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_class_metaspace); } |
| 0 | 318 static oop out_of_memory_error_array_size() { return gen_out_of_memory_error(_out_of_memory_error_array_size); } |
| 319 static oop out_of_memory_error_gc_overhead_limit() { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit); } | |
| 320 | |
| 321 // Accessors needed for fast allocation | |
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322 static Klass** boolArrayKlassObj_addr() { return &_boolArrayKlassObj; } |
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323 static Klass** byteArrayKlassObj_addr() { return &_byteArrayKlassObj; } |
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324 static Klass** charArrayKlassObj_addr() { return &_charArrayKlassObj; } |
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325 static Klass** intArrayKlassObj_addr() { return &_intArrayKlassObj; } |
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326 static Klass** shortArrayKlassObj_addr() { return &_shortArrayKlassObj; } |
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327 static Klass** longArrayKlassObj_addr() { return &_longArrayKlassObj; } |
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328 static Klass** singleArrayKlassObj_addr() { return &_singleArrayKlassObj; } |
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329 static Klass** doubleArrayKlassObj_addr() { return &_doubleArrayKlassObj; } |
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330 static Klass** objectArrayKlassObj_addr() { return &_objectArrayKlassObj; } |
| 0 | 331 |
| 332 // The particular choice of collected heap. | |
| 333 static CollectedHeap* heap() { return _collectedHeap; } | |
| 334 | |
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335 // For UseCompressedOops |
| 10405 | 336 // Narrow Oop encoding mode: |
| 337 // 0 - Use 32-bits oops without encoding when | |
| 338 // NarrowOopHeapBaseMin + heap_size < 4Gb | |
| 339 // 1 - Use zero based compressed oops with encoding when | |
| 340 // NarrowOopHeapBaseMin + heap_size < 32Gb | |
| 341 // 2 - Use compressed oops with heap base + encoding. | |
| 342 enum NARROW_OOP_MODE { | |
| 343 UnscaledNarrowOop = 0, | |
| 344 ZeroBasedNarrowOop = 1, | |
| 345 HeapBasedNarrowOop = 2 | |
| 346 }; | |
| 347 static NARROW_OOP_MODE narrow_oop_mode(); | |
| 348 static const char* narrow_oop_mode_to_string(NARROW_OOP_MODE mode); | |
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349 static char* preferred_heap_base(size_t heap_size, size_t alignment, NARROW_OOP_MODE mode); |
| 10405 | 350 static char* preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode); |
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351 static address narrow_oop_base() { return _narrow_oop._base; } |
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352 static bool is_narrow_oop_base(void* addr) { return (narrow_oop_base() == (address)addr); } |
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353 static int narrow_oop_shift() { return _narrow_oop._shift; } |
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354 static bool narrow_oop_use_implicit_null_checks() { return _narrow_oop._use_implicit_null_checks; } |
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355 |
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356 // For UseCompressedClassPointers |
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357 static address narrow_klass_base() { return _narrow_klass._base; } |
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358 static bool is_narrow_klass_base(void* addr) { return (narrow_klass_base() == (address)addr); } |
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359 static int narrow_klass_shift() { return _narrow_klass._shift; } |
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360 static bool narrow_klass_use_implicit_null_checks() { return _narrow_klass._use_implicit_null_checks; } |
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361 |
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362 static address* narrow_ptrs_base_addr() { return &_narrow_ptrs_base; } |
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363 static void set_narrow_ptrs_base(address a) { _narrow_ptrs_base = a; } |
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364 static address narrow_ptrs_base() { return _narrow_ptrs_base; } |
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365 |
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366 // this is set in vm_version on sparc (and then reset in universe afaict) |
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367 static void set_narrow_oop_shift(int shift) { |
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368 _narrow_oop._shift = shift; |
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369 } |
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370 |
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371 static void set_narrow_klass_shift(int shift) { |
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372 assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs"); |
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373 _narrow_klass._shift = shift; |
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374 } |
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375 |
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376 // Reserve Java heap and determine CompressedOops mode |
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377 static ReservedSpace reserve_heap(size_t heap_size, size_t alignment); |
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378 |
| 0 | 379 // Historic gc information |
| 380 static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; } | |
| 381 static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; } | |
| 382 static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; } | |
| 383 static void update_heap_info_at_gc(); | |
| 384 | |
| 385 // Testers | |
| 386 static bool is_bootstrapping() { return _bootstrapping; } | |
| 387 static bool is_fully_initialized() { return _fully_initialized; } | |
| 388 | |
| 389 static inline bool element_type_should_be_aligned(BasicType type); | |
| 390 static inline bool field_type_should_be_aligned(BasicType type); | |
| 391 static bool on_page_boundary(void* addr); | |
| 392 static bool should_fill_in_stack_trace(Handle throwable); | |
| 393 static void check_alignment(uintx size, uintx alignment, const char* name); | |
| 394 | |
| 395 // Finalizer support. | |
| 396 static void run_finalizers_on_exit(); | |
| 397 | |
| 398 // Iteration | |
| 399 | |
| 400 // Apply "f" to the addresses of all the direct heap pointers maintained | |
| 401 // as static fields of "Universe". | |
| 402 static void oops_do(OopClosure* f, bool do_all = false); | |
| 403 | |
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404 // CDS support |
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405 static void serialize(SerializeClosure* f, bool do_all = false); |
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406 |
| 0 | 407 // Apply "f" to all klasses for basic types (classes not present in |
| 408 // SystemDictionary). | |
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409 static void basic_type_classes_do(void f(Klass*)); |
| 0 | 410 |
| 411 // For sharing -- fill in a list of known vtable pointers. | |
| 412 static void init_self_patching_vtbl_list(void** list, int count); | |
| 413 | |
| 414 // Debugging | |
| 415 static bool verify_in_progress() { return _verify_in_progress; } | |
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416 static void verify(VerifyOption option, const char* prefix, bool silent = VerifySilently); |
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417 static void verify(const char* prefix, bool silent = VerifySilently) { |
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418 verify(VerifyOption_Default, prefix, silent); |
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419 } |
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420 static void verify(bool silent = VerifySilently) { |
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421 verify("", silent); |
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422 } |
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423 |
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424 static int verify_count() { return _verify_count; } |
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425 // The default behavior is to call print_on() on gclog_or_tty. |
| 0 | 426 static void print(); |
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427 // The extended parameter determines which method on the heap will |
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428 // be called: print_on() (extended == false) or print_extended_on() |
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429 // (extended == true). |
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430 static void print_on(outputStream* st, bool extended = false); |
| 0 | 431 static void print_heap_at_SIGBREAK(); |
| 432 static void print_heap_before_gc() { print_heap_before_gc(gclog_or_tty); } | |
| 433 static void print_heap_after_gc() { print_heap_after_gc(gclog_or_tty); } | |
| 4944 | 434 static void print_heap_before_gc(outputStream* st, bool ignore_extended = false); |
| 435 static void print_heap_after_gc(outputStream* st, bool ignore_extended = false); | |
| 0 | 436 |
| 437 // Change the number of dummy objects kept reachable by the full gc dummy | |
| 438 // array; this should trigger relocation in a sliding compaction collector. | |
| 439 debug_only(static bool release_fullgc_alot_dummy();) | |
| 440 // The non-oop pattern (see compiledIC.hpp, etc) | |
| 441 static void* non_oop_word(); | |
| 442 | |
| 443 // Oop verification (see MacroAssembler::verify_oop) | |
| 444 static uintptr_t verify_oop_mask() PRODUCT_RETURN0; | |
| 445 static uintptr_t verify_oop_bits() PRODUCT_RETURN0; | |
| 446 static uintptr_t verify_mark_bits() PRODUCT_RETURN0; | |
| 447 static uintptr_t verify_mark_mask() PRODUCT_RETURN0; | |
| 448 | |
| 449 // Flushing and deoptimization | |
| 450 static void flush_dependents_on(instanceKlassHandle dependee); | |
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451 static void flush_dependents_on(Handle call_site, Handle method_handle); |
| 0 | 452 #ifdef HOTSWAP |
| 453 // Flushing and deoptimization in case of evolution | |
| 454 static void flush_evol_dependents_on(instanceKlassHandle dependee); | |
| 455 #endif // HOTSWAP | |
| 456 // Support for fullspeed debugging | |
| 457 static void flush_dependents_on_method(methodHandle dependee); | |
| 458 | |
| 459 // Compiler support | |
| 460 static int base_vtable_size() { return _base_vtable_size; } | |
| 461 }; | |
| 462 | |
| 6197 | 463 class DeferredObjAllocEvent : public CHeapObj<mtInternal> { |
| 0 | 464 private: |
| 465 oop _oop; | |
| 466 size_t _bytesize; | |
| 467 jint _arena_id; | |
| 468 | |
| 469 public: | |
| 470 DeferredObjAllocEvent(const oop o, const size_t s, const jint id) { | |
| 471 _oop = o; | |
| 472 _bytesize = s; | |
| 473 _arena_id = id; | |
| 474 } | |
| 475 | |
| 476 ~DeferredObjAllocEvent() { | |
| 477 } | |
| 478 | |
| 479 jint arena_id() { return _arena_id; } | |
| 480 size_t bytesize() { return _bytesize; } | |
| 481 oop get_oop() { return _oop; } | |
| 482 }; | |
| 1972 | 483 |
| 484 #endif // SHARE_VM_MEMORY_UNIVERSE_HPP |