100 static OopHandle _main_thread_group; // Reference to the main thread group object
101 static OopHandle _system_thread_group; // Reference to the system thread group object
102
103 static OopHandle _the_empty_class_array; // Canonicalized obj array of type java.lang.Class
104 static OopHandle _the_null_string; // A cache of "null" as a Java string
105 static OopHandle _the_min_jint_string; // A cache of "-2147483648" as a Java string
106
107 static OopHandle _the_null_sentinel; // A unique object pointer unused except as a sentinel for null.
108
109 // preallocated error objects (no backtrace)
110 static OopHandle _out_of_memory_errors;
111
112 // preallocated cause message for delayed StackOverflowError
113 static OopHandle _delayed_stack_overflow_error_message;
114
115 static LatestMethodCache* _finalizer_register_cache; // static method for registering finalizable objects
116 static LatestMethodCache* _loader_addClass_cache; // method for registering loaded classes in class loader vector
117 static LatestMethodCache* _throw_illegal_access_error_cache; // Unsafe.throwIllegalAccessError() method
118 static LatestMethodCache* _throw_no_such_method_error_cache; // Unsafe.throwNoSuchMethodError() method
119 static LatestMethodCache* _do_stack_walk_cache; // method for stack walker callback
120
121 static Array<int>* _the_empty_int_array; // Canonicalized int array
122 static Array<u2>* _the_empty_short_array; // Canonicalized short array
123 static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass array
124 static Array<InstanceKlass*>* _the_empty_instance_klass_array; // Canonicalized instance klass array
125 static Array<Method*>* _the_empty_method_array; // Canonicalized method array
126
127 static Array<Klass*>* _the_array_interfaces_array;
128
129 // array of preallocated error objects with backtrace
130 static OopHandle _preallocated_out_of_memory_error_array;
131
132 // number of preallocated error objects available for use
133 static volatile jint _preallocated_out_of_memory_error_avail_count;
134
135 static OopHandle _null_ptr_exception_instance; // preallocated exception object
136 static OopHandle _arithmetic_exception_instance; // preallocated exception object
137 static OopHandle _virtual_machine_error_instance; // preallocated exception object
138
139 // References waiting to be transferred to the ReferenceHandler
140 static OopHandle _reference_pending_list;
141
142 // The particular choice of collected heap.
143 static CollectedHeap* _collectedHeap;
144
145 static intptr_t _non_oop_bits;
146
147 // array of dummy objects used with +FullGCAlot
148 debug_only(static OopHandle _fullgc_alot_dummy_array;)
149 debug_only(static int _fullgc_alot_dummy_next;)
150
151 // Compiler/dispatch support
152 static int _base_vtable_size; // Java vtbl size of klass Object (in words)
153
154 // Initialization
155 static bool _bootstrapping; // true during genesis
156 static bool _module_initialized; // true after call_initPhase2 called
157 static bool _fully_initialized; // true after universe_init and initialize_vtables called
158
159 // the array of preallocated errors with backtraces
160 static objArrayOop preallocated_out_of_memory_errors();
161
162 static objArrayOop out_of_memory_errors();
163 // generate an out of memory error; if possible using an error with preallocated backtrace;
164 // otherwise return the given default error.
165 static oop gen_out_of_memory_error(oop default_err);
166
237
238 static objArrayOop the_empty_class_array ();
239
240 static oop the_null_string();
241 static oop the_min_jint_string();
242
243 static oop null_ptr_exception_instance();
244 static oop arithmetic_exception_instance();
245 static oop virtual_machine_error_instance();
246 static oop vm_exception() { return virtual_machine_error_instance(); }
247
248 static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; }
249 static Method* finalizer_register_method() { return _finalizer_register_cache->get_method(); }
250 static Method* loader_addClass_method() { return _loader_addClass_cache->get_method(); }
251
252 static Method* throw_illegal_access_error() { return _throw_illegal_access_error_cache->get_method(); }
253 static Method* throw_no_such_method_error() { return _throw_no_such_method_error_cache->get_method(); }
254
255 static Method* do_stack_walk_method() { return _do_stack_walk_cache->get_method(); }
256
257 static oop the_null_sentinel();
258 static address the_null_sentinel_addr() { return (address) &_the_null_sentinel; }
259
260 // Function to initialize these
261 static void initialize_known_methods(TRAPS);
262
263 static void create_preallocated_out_of_memory_errors(TRAPS);
264
265 // Reference pending list manipulation. Access is protected by
266 // Heap_lock. The getter, setter and predicate require the caller
267 // owns the lock. Swap is used by parallel non-concurrent reference
268 // processing threads, where some higher level controller owns
269 // Heap_lock, so requires the lock is locked, but not necessarily by
270 // the current thread.
271 static oop reference_pending_list();
272 static void clear_reference_pending_list();
273 static bool has_reference_pending_list();
274 static oop swap_reference_pending_list(oop list);
275
276 static Array<int>* the_empty_int_array() { return _the_empty_int_array; }
277 static Array<u2>* the_empty_short_array() { return _the_empty_short_array; }
278 static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; }
279 static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; }
280 static Array<InstanceKlass*>* the_empty_instance_klass_array() { return _the_empty_instance_klass_array; }
281
282 // OutOfMemoryError support. Returns an error with the required message. The returned error
283 // may or may not have a backtrace. If error has a backtrace then the stack trace is already
284 // filled in.
285 static oop out_of_memory_error_java_heap();
286 static oop out_of_memory_error_c_heap();
287 static oop out_of_memory_error_metaspace();
288 static oop out_of_memory_error_class_metaspace();
289 static oop out_of_memory_error_array_size();
290 static oop out_of_memory_error_gc_overhead_limit();
291 static oop out_of_memory_error_realloc_objects();
292
293 // Throw default _out_of_memory_error_retry object as it will never propagate out of the VM
294 static oop out_of_memory_error_retry();
295 static oop delayed_stack_overflow_error_message();
296
297 // The particular choice of collected heap.
298 static CollectedHeap* heap() { return _collectedHeap; }
299
300 DEBUG_ONLY(static bool is_gc_active();)
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100 static OopHandle _main_thread_group; // Reference to the main thread group object
101 static OopHandle _system_thread_group; // Reference to the system thread group object
102
103 static OopHandle _the_empty_class_array; // Canonicalized obj array of type java.lang.Class
104 static OopHandle _the_null_string; // A cache of "null" as a Java string
105 static OopHandle _the_min_jint_string; // A cache of "-2147483648" as a Java string
106
107 static OopHandle _the_null_sentinel; // A unique object pointer unused except as a sentinel for null.
108
109 // preallocated error objects (no backtrace)
110 static OopHandle _out_of_memory_errors;
111
112 // preallocated cause message for delayed StackOverflowError
113 static OopHandle _delayed_stack_overflow_error_message;
114
115 static LatestMethodCache* _finalizer_register_cache; // static method for registering finalizable objects
116 static LatestMethodCache* _loader_addClass_cache; // method for registering loaded classes in class loader vector
117 static LatestMethodCache* _throw_illegal_access_error_cache; // Unsafe.throwIllegalAccessError() method
118 static LatestMethodCache* _throw_no_such_method_error_cache; // Unsafe.throwNoSuchMethodError() method
119 static LatestMethodCache* _do_stack_walk_cache; // method for stack walker callback
120 static LatestMethodCache* _is_substitutable_cache; // PrimitiveObjectMethods.isSubstitutable() method
121 static LatestMethodCache* _primitive_type_hash_code_cache; // PrimitiveObjectMethods.primitiveObjectHashCode() method
122
123 static Array<int>* _the_empty_int_array; // Canonicalized int array
124 static Array<u2>* _the_empty_short_array; // Canonicalized short array
125 static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass array
126 static Array<InstanceKlass*>* _the_empty_instance_klass_array; // Canonicalized instance klass array
127 static Array<InstanceKlass*>* _the_single_IdentityObject_klass_array; // Common single interface array for IdentityObjects
128 static Array<InstanceKlass*>* _the_single_PrimitiveObject_klass_array; // Common single interface array for PrimitiveObjects
129 static Array<Method*>* _the_empty_method_array; // Canonicalized method array
130
131 static Array<Klass*>* _the_array_interfaces_array;
132
133 // array of preallocated error objects with backtrace
134 static OopHandle _preallocated_out_of_memory_error_array;
135
136 // number of preallocated error objects available for use
137 static volatile jint _preallocated_out_of_memory_error_avail_count;
138
139 static OopHandle _null_ptr_exception_instance; // preallocated exception object
140 static OopHandle _arithmetic_exception_instance; // preallocated exception object
141 static OopHandle _virtual_machine_error_instance; // preallocated exception object
142
143 // References waiting to be transferred to the ReferenceHandler
144 static OopHandle _reference_pending_list;
145
146 // The particular choice of collected heap.
147 static CollectedHeap* _collectedHeap;
148
149 static intptr_t _non_oop_bits;
150
151
152 // array of dummy objects used with +FullGCAlot
153 debug_only(static OopHandle _fullgc_alot_dummy_array;)
154 debug_only(static int _fullgc_alot_dummy_next;)
155
156 // Compiler/dispatch support
157 static int _base_vtable_size; // Java vtbl size of klass Object (in words)
158
159 // Initialization
160 static bool _bootstrapping; // true during genesis
161 static bool _module_initialized; // true after call_initPhase2 called
162 static bool _fully_initialized; // true after universe_init and initialize_vtables called
163
164 // the array of preallocated errors with backtraces
165 static objArrayOop preallocated_out_of_memory_errors();
166
167 static objArrayOop out_of_memory_errors();
168 // generate an out of memory error; if possible using an error with preallocated backtrace;
169 // otherwise return the given default error.
170 static oop gen_out_of_memory_error(oop default_err);
171
242
243 static objArrayOop the_empty_class_array ();
244
245 static oop the_null_string();
246 static oop the_min_jint_string();
247
248 static oop null_ptr_exception_instance();
249 static oop arithmetic_exception_instance();
250 static oop virtual_machine_error_instance();
251 static oop vm_exception() { return virtual_machine_error_instance(); }
252
253 static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; }
254 static Method* finalizer_register_method() { return _finalizer_register_cache->get_method(); }
255 static Method* loader_addClass_method() { return _loader_addClass_cache->get_method(); }
256
257 static Method* throw_illegal_access_error() { return _throw_illegal_access_error_cache->get_method(); }
258 static Method* throw_no_such_method_error() { return _throw_no_such_method_error_cache->get_method(); }
259
260 static Method* do_stack_walk_method() { return _do_stack_walk_cache->get_method(); }
261
262 static Method* is_substitutable_method() { return _is_substitutable_cache->get_method(); }
263 static Method* primitive_type_hash_code_method() { return _primitive_type_hash_code_cache->get_method(); }
264
265 static oop the_null_sentinel();
266 static address the_null_sentinel_addr() { return (address) &_the_null_sentinel; }
267
268 // Function to initialize these
269 static void initialize_known_methods(TRAPS);
270
271 static void create_preallocated_out_of_memory_errors(TRAPS);
272
273 // Reference pending list manipulation. Access is protected by
274 // Heap_lock. The getter, setter and predicate require the caller
275 // owns the lock. Swap is used by parallel non-concurrent reference
276 // processing threads, where some higher level controller owns
277 // Heap_lock, so requires the lock is locked, but not necessarily by
278 // the current thread.
279 static oop reference_pending_list();
280 static void clear_reference_pending_list();
281 static bool has_reference_pending_list();
282 static oop swap_reference_pending_list(oop list);
283
284 static Array<int>* the_empty_int_array() { return _the_empty_int_array; }
285 static Array<u2>* the_empty_short_array() { return _the_empty_short_array; }
286 static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; }
287 static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; }
288 static Array<InstanceKlass*>* the_empty_instance_klass_array() { return _the_empty_instance_klass_array; }
289 static Array<InstanceKlass*>* the_single_IdentityObject_klass_array() {
290 assert(_the_single_IdentityObject_klass_array != NULL, "Must be initialized before use");
291 assert(_the_single_IdentityObject_klass_array->length() == 1, "Sanity check");
292 return _the_single_IdentityObject_klass_array;
293 }
294 static void initialize_the_single_IdentityObject_klass_array(InstanceKlass* ik, TRAPS);
295 static Array<InstanceKlass*>* the_single_PrimitiveObject_klass_array() {
296 assert(_the_single_PrimitiveObject_klass_array != NULL, "Must be initialized before use");
297 assert(_the_single_PrimitiveObject_klass_array->length() == 1, "Sanity check");
298 return _the_single_PrimitiveObject_klass_array;
299 }
300 static void initialize_the_single_PrimitiveObject_klass_array(InstanceKlass* ik, TRAPS);
301
302 // OutOfMemoryError support. Returns an error with the required message. The returned error
303 // may or may not have a backtrace. If error has a backtrace then the stack trace is already
304 // filled in.
305 static oop out_of_memory_error_java_heap();
306 static oop out_of_memory_error_c_heap();
307 static oop out_of_memory_error_metaspace();
308 static oop out_of_memory_error_class_metaspace();
309 static oop out_of_memory_error_array_size();
310 static oop out_of_memory_error_gc_overhead_limit();
311 static oop out_of_memory_error_realloc_objects();
312
313 // Throw default _out_of_memory_error_retry object as it will never propagate out of the VM
314 static oop out_of_memory_error_retry();
315 static oop delayed_stack_overflow_error_message();
316
317 // The particular choice of collected heap.
318 static CollectedHeap* heap() { return _collectedHeap; }
319
320 DEBUG_ONLY(static bool is_gc_active();)
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