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--- old/src/share/vm/ci/ciEnv.hpp
+++ new/src/share/vm/ci/ciEnv.hpp
1 1 /*
2 2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 *
23 23 */
24 24
25 25 #ifndef SHARE_VM_CI_CIENV_HPP
26 26 #define SHARE_VM_CI_CIENV_HPP
27 27
28 28 #include "ci/ciClassList.hpp"
29 29 #include "ci/ciObjectFactory.hpp"
30 30 #include "classfile/systemDictionary.hpp"
31 31 #include "code/debugInfoRec.hpp"
32 32 #include "code/dependencies.hpp"
33 33 #include "code/exceptionHandlerTable.hpp"
34 34 #include "compiler/oopMap.hpp"
35 35 #include "runtime/thread.hpp"
36 36
37 37 class CompileTask;
38 38
39 39 // ciEnv
40 40 //
41 41 // This class is the top level broker for requests from the compiler
42 42 // to the VM.
43 43 class ciEnv : StackObj {
44 44 CI_PACKAGE_ACCESS_TO
45 45
46 46 friend class CompileBroker;
47 47 friend class Dependencies; // for get_object, during logging
48 48
49 49 private:
50 50 Arena* _arena; // Alias for _ciEnv_arena except in init_shared_objects()
51 51 Arena _ciEnv_arena;
52 52 int _system_dictionary_modification_counter;
53 53 ciObjectFactory* _factory;
54 54 OopRecorder* _oop_recorder;
55 55 DebugInformationRecorder* _debug_info;
56 56 Dependencies* _dependencies;
57 57 const char* _failure_reason;
58 58 int _compilable;
59 59 bool _break_at_compile;
60 60 int _num_inlined_bytecodes;
61 61 CompileTask* _task; // faster access to CompilerThread::task
62 62 CompileLog* _log; // faster access to CompilerThread::log
63 63 void* _compiler_data; // compiler-specific stuff, if any
64 64
65 65 char* _name_buffer;
66 66 int _name_buffer_len;
67 67
68 68 // Cache Jvmti state
69 69 bool _jvmti_can_hotswap_or_post_breakpoint;
70 70 bool _jvmti_can_access_local_variables;
71 71 bool _jvmti_can_post_on_exceptions;
72 72
73 73 // Cache DTrace flags
74 74 bool _dtrace_extended_probes;
75 75 bool _dtrace_monitor_probes;
76 76 bool _dtrace_method_probes;
77 77 bool _dtrace_alloc_probes;
78 78
79 79 // Distinguished instances of certain ciObjects..
80 80 static ciObject* _null_object_instance;
81 81 static ciMethodKlass* _method_klass_instance;
82 82 static ciKlassKlass* _klass_klass_instance;
83 83 static ciInstanceKlassKlass* _instance_klass_klass_instance;
84 84 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance;
85 85 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance;
86 86
87 87 #define WK_KLASS_DECL(name, ignore_s, ignore_o) static ciInstanceKlass* _##name;
88 88 WK_KLASSES_DO(WK_KLASS_DECL)
89 89 #undef WK_KLASS_DECL
90 90
91 91 static ciSymbol* _unloaded_cisymbol;
92 92 static ciInstanceKlass* _unloaded_ciinstance_klass;
93 93 static ciObjArrayKlass* _unloaded_ciobjarrayklass;
94 94
95 95 static jobject _ArrayIndexOutOfBoundsException_handle;
96 96 static jobject _ArrayStoreException_handle;
97 97 static jobject _ClassCastException_handle;
98 98
99 99 ciInstance* _NullPointerException_instance;
100 100 ciInstance* _ArithmeticException_instance;
101 101 ciInstance* _ArrayIndexOutOfBoundsException_instance;
102 102 ciInstance* _ArrayStoreException_instance;
103 103 ciInstance* _ClassCastException_instance;
104 104
105 105 ciInstance* _the_null_string; // The Java string "null"
106 106 ciInstance* _the_min_jint_string; // The Java string "-2147483648"
107 107
108 108 // Look up a klass by name from a particular class loader (the accessor's).
109 109 // If require_local, result must be defined in that class loader, or NULL.
110 110 // If !require_local, a result from remote class loader may be reported,
111 111 // if sufficient class loader constraints exist such that initiating
112 112 // a class loading request from the given loader is bound to return
113 113 // the class defined in the remote loader (or throw an error).
114 114 //
115 115 // Return an unloaded klass if !require_local and no class at all is found.
116 116 //
117 117 // The CI treats a klass as loaded if it is consistently defined in
118 118 // another loader, even if it hasn't yet been loaded in all loaders
119 119 // that could potentially see it via delegation.
120 120 ciKlass* get_klass_by_name(ciKlass* accessing_klass,
121 121 ciSymbol* klass_name,
122 122 bool require_local);
123 123
124 124 // Constant pool access.
125 125 ciKlass* get_klass_by_index(constantPoolHandle cpool,
126 126 int klass_index,
127 127 bool& is_accessible,
128 128 ciInstanceKlass* loading_klass);
129 129 ciConstant get_constant_by_index(constantPoolHandle cpool,
130 130 int pool_index, int cache_index,
131 131 ciInstanceKlass* accessor);
132 132 ciField* get_field_by_index(ciInstanceKlass* loading_klass,
133 133 int field_index);
134 134 ciMethod* get_method_by_index(constantPoolHandle cpool,
135 135 int method_index, Bytecodes::Code bc,
136 136 ciInstanceKlass* loading_klass);
137 137
138 138 // Implementation methods for loading and constant pool access.
139 139 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass,
140 140 constantPoolHandle cpool,
141 141 ciSymbol* klass_name,
142 142 bool require_local);
143 143 ciKlass* get_klass_by_index_impl(constantPoolHandle cpool,
144 144 int klass_index,
145 145 bool& is_accessible,
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146 146 ciInstanceKlass* loading_klass);
147 147 ciConstant get_constant_by_index_impl(constantPoolHandle cpool,
148 148 int pool_index, int cache_index,
149 149 ciInstanceKlass* loading_klass);
150 150 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass,
151 151 int field_index);
152 152 ciMethod* get_method_by_index_impl(constantPoolHandle cpool,
153 153 int method_index, Bytecodes::Code bc,
154 154 ciInstanceKlass* loading_klass);
155 155 ciMethod* get_fake_invokedynamic_method_impl(constantPoolHandle cpool,
156 - int index, Bytecodes::Code bc);
156 + int index, Bytecodes::Code bc,
157 + ciInstanceKlass* accessor);
157 158
158 159 // Helper methods
159 160 bool check_klass_accessibility(ciKlass* accessing_klass,
160 161 klassOop resolved_klassOop);
161 162 methodOop lookup_method(instanceKlass* accessor,
162 163 instanceKlass* holder,
163 164 Symbol* name,
164 165 Symbol* sig,
165 166 Bytecodes::Code bc);
166 167
167 168 // Get a ciObject from the object factory. Ensures uniqueness
168 169 // of ciObjects.
169 170 ciObject* get_object(oop o) {
170 171 if (o == NULL) {
171 172 return _null_object_instance;
172 173 } else {
173 174 return _factory->get(o);
174 175 }
175 176 }
176 177
177 178 ciSymbol* get_symbol(Symbol* o) {
178 179 if (o == NULL) {
179 180 ShouldNotReachHere();
180 181 return NULL;
181 182 } else {
182 183 return _factory->get_symbol(o);
183 184 }
184 185 }
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185 186
186 187 ciMethod* get_method_from_handle(jobject method);
187 188
188 189 ciInstance* get_or_create_exception(jobject& handle, Symbol* name);
189 190
190 191 // Get a ciMethod representing either an unfound method or
191 192 // a method with an unloaded holder. Ensures uniqueness of
192 193 // the result.
193 194 ciMethod* get_unloaded_method(ciInstanceKlass* holder,
194 195 ciSymbol* name,
195 - ciSymbol* signature) {
196 - return _factory->get_unloaded_method(holder, name, signature);
196 + ciSymbol* signature,
197 + ciInstanceKlass* accessor) {
198 + return _factory->get_unloaded_method(holder, name, signature, accessor);
197 199 }
198 200
199 201 // Get a ciKlass representing an unloaded klass.
200 202 // Ensures uniqueness of the result.
201 - ciKlass* get_unloaded_klass(ciKlass* accessing_klass,
203 + ciKlass* get_unloaded_klass(ciKlass* accessing_klass,
202 204 ciSymbol* name) {
203 205 return _factory->get_unloaded_klass(accessing_klass, name, true);
204 206 }
205 207
206 208 // Get a ciKlass representing an unloaded klass mirror.
207 209 // Result is not necessarily unique, but will be unloaded.
208 210 ciInstance* get_unloaded_klass_mirror(ciKlass* type) {
209 211 return _factory->get_unloaded_klass_mirror(type);
210 212 }
211 213
212 214 // Get a ciInstance representing an unresolved method handle constant.
213 215 ciInstance* get_unloaded_method_handle_constant(ciKlass* holder,
214 216 ciSymbol* name,
215 217 ciSymbol* signature,
216 218 int ref_kind) {
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217 219 return _factory->get_unloaded_method_handle_constant(holder, name, signature, ref_kind);
218 220 }
219 221
220 222 // Get a ciInstance representing an unresolved method type constant.
221 223 ciInstance* get_unloaded_method_type_constant(ciSymbol* signature) {
222 224 return _factory->get_unloaded_method_type_constant(signature);
223 225 }
224 226
225 227 // See if we already have an unloaded klass for the given name
226 228 // or return NULL if not.
227 - ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) {
229 + ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) {
228 230 return _factory->get_unloaded_klass(accessing_klass, name, false);
229 231 }
230 232
231 233 // Get a ciReturnAddress corresponding to the given bci.
232 234 // Ensures uniqueness of the result.
233 235 ciReturnAddress* get_return_address(int bci) {
234 236 return _factory->get_return_address(bci);
235 237 }
236 238
237 239 // Get a ciMethodData representing the methodData for a method
238 240 // with none.
239 241 ciMethodData* get_empty_methodData() {
240 242 return _factory->get_empty_methodData();
241 243 }
242 244
243 245 // General utility : get a buffer of some required length.
244 246 // Used in symbol creation.
245 247 char* name_buffer(int req_len);
246 248
247 249 // Is this thread currently in the VM state?
248 250 static bool is_in_vm();
249 251
250 252 // Helper routine for determining the validity of a compilation with
251 253 // respect to method dependencies (e.g. concurrent class loading).
252 254 void validate_compile_task_dependencies(ciMethod* target);
253 255
254 256 public:
255 257 enum {
256 258 MethodCompilable,
257 259 MethodCompilable_not_at_tier,
258 260 MethodCompilable_never
259 261 };
260 262
261 263 ciEnv(CompileTask* task, int system_dictionary_modification_counter);
262 264 // Used only during initialization of the ci
263 265 ciEnv(Arena* arena);
264 266 ~ciEnv();
265 267
266 268 OopRecorder* oop_recorder() { return _oop_recorder; }
267 269 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; }
268 270
269 271 DebugInformationRecorder* debug_info() { return _debug_info; }
270 272 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; }
271 273
272 274 Dependencies* dependencies() { return _dependencies; }
273 275 void set_dependencies(Dependencies* d) { _dependencies = d; }
274 276
275 277 // This is true if the compilation is not going to produce code.
276 278 // (It is reasonable to retry failed compilations.)
277 279 bool failing() { return _failure_reason != NULL; }
278 280
279 281 // Reason this compilation is failing, such as "too many basic blocks".
280 282 const char* failure_reason() { return _failure_reason; }
281 283
282 284 // Return state of appropriate compilability
283 285 int compilable() { return _compilable; }
284 286
285 287 bool break_at_compile() { return _break_at_compile; }
286 288 void set_break_at_compile(bool z) { _break_at_compile = z; }
287 289
288 290 // Cache Jvmti state
289 291 void cache_jvmti_state();
290 292 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; }
291 293 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; }
292 294 bool jvmti_can_post_on_exceptions() const { return _jvmti_can_post_on_exceptions; }
293 295
294 296 // Cache DTrace flags
295 297 void cache_dtrace_flags();
296 298 bool dtrace_extended_probes() const { return _dtrace_extended_probes; }
297 299 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; }
298 300 bool dtrace_method_probes() const { return _dtrace_method_probes; }
299 301 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; }
300 302
301 303 // The compiler task which has created this env.
302 304 // May be useful to find out compile_id, comp_level, etc.
303 305 CompileTask* task() { return _task; }
304 306 // Handy forwards to the task:
305 307 int comp_level(); // task()->comp_level()
306 308 uint compile_id(); // task()->compile_id()
307 309
308 310 // Register the result of a compilation.
309 311 void register_method(ciMethod* target,
310 312 int entry_bci,
311 313 CodeOffsets* offsets,
312 314 int orig_pc_offset,
313 315 CodeBuffer* code_buffer,
314 316 int frame_words,
315 317 OopMapSet* oop_map_set,
316 318 ExceptionHandlerTable* handler_table,
317 319 ImplicitExceptionTable* inc_table,
318 320 AbstractCompiler* compiler,
319 321 int comp_level,
320 322 bool has_unsafe_access);
321 323
322 324
323 325 // Access to certain well known ciObjects.
324 326 #define WK_KLASS_FUNC(name, ignore_s, ignore_o) \
325 327 ciInstanceKlass* name() { \
326 328 return _##name;\
327 329 }
328 330 WK_KLASSES_DO(WK_KLASS_FUNC)
329 331 #undef WK_KLASS_FUNC
330 332
331 333 ciInstance* NullPointerException_instance() {
332 334 assert(_NullPointerException_instance != NULL, "initialization problem");
333 335 return _NullPointerException_instance;
334 336 }
335 337 ciInstance* ArithmeticException_instance() {
336 338 assert(_ArithmeticException_instance != NULL, "initialization problem");
337 339 return _ArithmeticException_instance;
338 340 }
339 341
340 342 // Lazy constructors:
341 343 ciInstance* ArrayIndexOutOfBoundsException_instance();
342 344 ciInstance* ArrayStoreException_instance();
343 345 ciInstance* ClassCastException_instance();
344 346
345 347 ciInstance* the_null_string();
346 348 ciInstance* the_min_jint_string();
347 349
348 350 static ciSymbol* unloaded_cisymbol() {
349 351 return _unloaded_cisymbol;
350 352 }
351 353 static ciObjArrayKlass* unloaded_ciobjarrayklass() {
352 354 return _unloaded_ciobjarrayklass;
353 355 }
354 356 static ciInstanceKlass* unloaded_ciinstance_klass() {
355 357 return _unloaded_ciinstance_klass;
356 358 }
357 359
358 360 ciKlass* find_system_klass(ciSymbol* klass_name);
359 361 // Note: To find a class from its name string, use ciSymbol::make,
360 362 // but consider adding to vmSymbols.hpp instead.
361 363
362 364 // Use this to make a holder for non-perm compile time constants.
363 365 // The resulting array is guaranteed to satisfy "can_be_constant".
364 366 ciArray* make_system_array(GrowableArray<ciObject*>* objects);
365 367
366 368 // converts the ciKlass* representing the holder of a method into a
367 369 // ciInstanceKlass*. This is needed since the holder of a method in
368 370 // the bytecodes could be an array type. Basically this converts
369 371 // array types into java/lang/Object and other types stay as they are.
370 372 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass);
371 373
372 374 // Return the machine-level offset of o, which must be an element of a.
373 375 // This may be used to form constant-loading expressions in lieu of simpler encodings.
374 376 int array_element_offset_in_bytes(ciArray* a, ciObject* o);
375 377
376 378 // Access to the compile-lifetime allocation arena.
377 379 Arena* arena() { return _arena; }
378 380
379 381 // What is the current compilation environment?
380 382 static ciEnv* current() { return CompilerThread::current()->env(); }
381 383
382 384 // Overload with current thread argument
383 385 static ciEnv* current(CompilerThread *thread) { return thread->env(); }
384 386
385 387 // Per-compiler data. (Used by C2 to publish the Compile* pointer.)
386 388 void* compiler_data() { return _compiler_data; }
387 389 void set_compiler_data(void* x) { _compiler_data = x; }
388 390
389 391 // Notice that a method has been inlined in the current compile;
390 392 // used only for statistics.
391 393 void notice_inlined_method(ciMethod* method);
392 394
393 395 // Total number of bytecodes in inlined methods in this compile
394 396 int num_inlined_bytecodes() const;
395 397
396 398 // Output stream for logging compilation info.
397 399 CompileLog* log() { return _log; }
398 400 void set_log(CompileLog* log) { _log = log; }
399 401
400 402 // Check for changes to the system dictionary during compilation
401 403 bool system_dictionary_modification_counter_changed();
402 404
403 405 void record_failure(const char* reason);
404 406 void record_method_not_compilable(const char* reason, bool all_tiers = true);
405 407 void record_out_of_memory_failure();
406 408 };
407 409
408 410 #endif // SHARE_VM_CI_CIENV_HPP
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