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--- old/src/share/vm/ci/ciEnv.cpp
+++ new/src/share/vm/ci/ciEnv.cpp
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 #include "precompiled.hpp"
26 26 #include "ci/ciConstant.hpp"
27 27 #include "ci/ciEnv.hpp"
28 28 #include "ci/ciField.hpp"
29 29 #include "ci/ciInstance.hpp"
30 30 #include "ci/ciInstanceKlass.hpp"
31 31 #include "ci/ciInstanceKlassKlass.hpp"
32 32 #include "ci/ciMethod.hpp"
33 33 #include "ci/ciNullObject.hpp"
34 34 #include "ci/ciObjArrayKlassKlass.hpp"
35 35 #include "ci/ciTypeArrayKlassKlass.hpp"
36 36 #include "ci/ciUtilities.hpp"
37 37 #include "classfile/systemDictionary.hpp"
38 38 #include "classfile/vmSymbols.hpp"
39 39 #include "code/scopeDesc.hpp"
40 40 #include "compiler/compileBroker.hpp"
41 41 #include "compiler/compileLog.hpp"
42 42 #include "compiler/compilerOracle.hpp"
43 43 #include "gc_interface/collectedHeap.inline.hpp"
44 44 #include "interpreter/linkResolver.hpp"
45 45 #include "memory/allocation.inline.hpp"
46 46 #include "memory/oopFactory.hpp"
47 47 #include "memory/universe.inline.hpp"
48 48 #include "oops/methodDataOop.hpp"
49 49 #include "oops/objArrayKlass.hpp"
50 50 #include "oops/oop.inline.hpp"
51 51 #include "oops/oop.inline2.hpp"
52 52 #include "prims/jvmtiExport.hpp"
53 53 #include "prims/methodHandleWalk.hpp"
54 54 #include "runtime/init.hpp"
55 55 #include "runtime/reflection.hpp"
56 56 #include "runtime/sharedRuntime.hpp"
57 57 #include "utilities/dtrace.hpp"
58 58 #ifdef COMPILER1
59 59 #include "c1/c1_Runtime1.hpp"
60 60 #endif
61 61 #ifdef COMPILER2
62 62 #include "opto/runtime.hpp"
63 63 #endif
64 64
65 65 // ciEnv
66 66 //
67 67 // This class is the top level broker for requests from the compiler
68 68 // to the VM.
69 69
70 70 ciObject* ciEnv::_null_object_instance;
71 71 ciMethodKlass* ciEnv::_method_klass_instance;
72 72 ciKlassKlass* ciEnv::_klass_klass_instance;
73 73 ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance;
74 74 ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance;
75 75 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance;
76 76
77 77 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
78 78 WK_KLASSES_DO(WK_KLASS_DEFN)
79 79 #undef WK_KLASS_DEFN
80 80
81 81 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
82 82 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
83 83 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
84 84
85 85 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
86 86 jobject ciEnv::_ArrayStoreException_handle = NULL;
87 87 jobject ciEnv::_ClassCastException_handle = NULL;
88 88
89 89 #ifndef PRODUCT
90 90 static bool firstEnv = true;
91 91 #endif /* PRODUCT */
92 92
93 93 // ------------------------------------------------------------------
94 94 // ciEnv::ciEnv
95 95 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) {
96 96 VM_ENTRY_MARK;
97 97
98 98 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
99 99 thread->set_env(this);
100 100 assert(ciEnv::current() == this, "sanity");
101 101
102 102 _oop_recorder = NULL;
103 103 _debug_info = NULL;
104 104 _dependencies = NULL;
105 105 _failure_reason = NULL;
106 106 _compilable = MethodCompilable;
107 107 _break_at_compile = false;
108 108 _compiler_data = NULL;
109 109 #ifndef PRODUCT
110 110 assert(!firstEnv, "not initialized properly");
111 111 #endif /* !PRODUCT */
112 112
113 113 _system_dictionary_modification_counter = system_dictionary_modification_counter;
114 114 _num_inlined_bytecodes = 0;
115 115 assert(task == NULL || thread->task() == task, "sanity");
116 116 _task = task;
117 117 _log = NULL;
118 118
119 119 // Temporary buffer for creating symbols and such.
120 120 _name_buffer = NULL;
121 121 _name_buffer_len = 0;
122 122
123 123 _arena = &_ciEnv_arena;
124 124 _factory = new (_arena) ciObjectFactory(_arena, 128);
125 125
126 126 // Preload commonly referenced system ciObjects.
127 127
128 128 // During VM initialization, these instances have not yet been created.
129 129 // Assertions ensure that these instances are not accessed before
130 130 // their initialization.
131 131
132 132 assert(Universe::is_fully_initialized(), "should be complete");
133 133
134 134 oop o = Universe::null_ptr_exception_instance();
135 135 assert(o != NULL, "should have been initialized");
136 136 _NullPointerException_instance = get_object(o)->as_instance();
137 137 o = Universe::arithmetic_exception_instance();
138 138 assert(o != NULL, "should have been initialized");
139 139 _ArithmeticException_instance = get_object(o)->as_instance();
140 140
141 141 _ArrayIndexOutOfBoundsException_instance = NULL;
142 142 _ArrayStoreException_instance = NULL;
143 143 _ClassCastException_instance = NULL;
144 144 _the_null_string = NULL;
145 145 _the_min_jint_string = NULL;
146 146 }
147 147
148 148 ciEnv::ciEnv(Arena* arena) {
149 149 ASSERT_IN_VM;
150 150
151 151 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
152 152 CompilerThread* current_thread = CompilerThread::current();
153 153 assert(current_thread->env() == NULL, "must be");
154 154 current_thread->set_env(this);
155 155 assert(ciEnv::current() == this, "sanity");
156 156
157 157 _oop_recorder = NULL;
158 158 _debug_info = NULL;
159 159 _dependencies = NULL;
160 160 _failure_reason = NULL;
161 161 _compilable = MethodCompilable_never;
162 162 _break_at_compile = false;
163 163 _compiler_data = NULL;
164 164 #ifndef PRODUCT
165 165 assert(firstEnv, "must be first");
166 166 firstEnv = false;
167 167 #endif /* !PRODUCT */
168 168
169 169 _system_dictionary_modification_counter = 0;
170 170 _num_inlined_bytecodes = 0;
171 171 _task = NULL;
172 172 _log = NULL;
173 173
174 174 // Temporary buffer for creating symbols and such.
175 175 _name_buffer = NULL;
176 176 _name_buffer_len = 0;
177 177
178 178 _arena = arena;
179 179 _factory = new (_arena) ciObjectFactory(_arena, 128);
180 180
181 181 // Preload commonly referenced system ciObjects.
182 182
183 183 // During VM initialization, these instances have not yet been created.
184 184 // Assertions ensure that these instances are not accessed before
185 185 // their initialization.
186 186
187 187 assert(Universe::is_fully_initialized(), "must be");
188 188
189 189 oop o = Universe::null_ptr_exception_instance();
190 190 assert(o != NULL, "should have been initialized");
191 191 _NullPointerException_instance = get_object(o)->as_instance();
192 192 o = Universe::arithmetic_exception_instance();
193 193 assert(o != NULL, "should have been initialized");
194 194 _ArithmeticException_instance = get_object(o)->as_instance();
195 195
196 196 _ArrayIndexOutOfBoundsException_instance = NULL;
197 197 _ArrayStoreException_instance = NULL;
198 198 _ClassCastException_instance = NULL;
199 199 _the_null_string = NULL;
200 200 _the_min_jint_string = NULL;
201 201 }
202 202
203 203 ciEnv::~ciEnv() {
204 204 CompilerThread* current_thread = CompilerThread::current();
205 205 _factory->remove_symbols();
206 206 current_thread->set_env(NULL);
207 207 }
208 208
209 209 // ------------------------------------------------------------------
210 210 // Cache Jvmti state
211 211 void ciEnv::cache_jvmti_state() {
212 212 VM_ENTRY_MARK;
213 213 // Get Jvmti capabilities under lock to get consistant values.
214 214 MutexLocker mu(JvmtiThreadState_lock);
215 215 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
216 216 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
217 217 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
218 218 }
219 219
220 220 // ------------------------------------------------------------------
221 221 // Cache DTrace flags
222 222 void ciEnv::cache_dtrace_flags() {
223 223 // Need lock?
224 224 _dtrace_extended_probes = ExtendedDTraceProbes;
225 225 if (_dtrace_extended_probes) {
226 226 _dtrace_monitor_probes = true;
227 227 _dtrace_method_probes = true;
228 228 _dtrace_alloc_probes = true;
229 229 } else {
230 230 _dtrace_monitor_probes = DTraceMonitorProbes;
231 231 _dtrace_method_probes = DTraceMethodProbes;
232 232 _dtrace_alloc_probes = DTraceAllocProbes;
233 233 }
234 234 }
235 235
236 236 // ------------------------------------------------------------------
237 237 // helper for lazy exception creation
238 238 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
239 239 VM_ENTRY_MARK;
240 240 if (handle == NULL) {
241 241 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
242 242 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
243 243 jobject objh = NULL;
244 244 if (!HAS_PENDING_EXCEPTION && k != NULL) {
245 245 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD);
246 246 if (!HAS_PENDING_EXCEPTION)
247 247 objh = JNIHandles::make_global(obj);
248 248 }
249 249 if (HAS_PENDING_EXCEPTION) {
250 250 CLEAR_PENDING_EXCEPTION;
251 251 } else {
252 252 handle = objh;
253 253 }
254 254 }
255 255 oop obj = JNIHandles::resolve(handle);
256 256 return obj == NULL? NULL: get_object(obj)->as_instance();
257 257 }
258 258
259 259 // ------------------------------------------------------------------
260 260 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc.
261 261 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
262 262 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
263 263 _ArrayIndexOutOfBoundsException_instance
264 264 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
265 265 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
266 266 }
267 267 return _ArrayIndexOutOfBoundsException_instance;
268 268 }
269 269 ciInstance* ciEnv::ArrayStoreException_instance() {
270 270 if (_ArrayStoreException_instance == NULL) {
271 271 _ArrayStoreException_instance
272 272 = get_or_create_exception(_ArrayStoreException_handle,
273 273 vmSymbols::java_lang_ArrayStoreException());
274 274 }
275 275 return _ArrayStoreException_instance;
276 276 }
277 277 ciInstance* ciEnv::ClassCastException_instance() {
278 278 if (_ClassCastException_instance == NULL) {
279 279 _ClassCastException_instance
280 280 = get_or_create_exception(_ClassCastException_handle,
281 281 vmSymbols::java_lang_ClassCastException());
282 282 }
283 283 return _ClassCastException_instance;
284 284 }
285 285
286 286 ciInstance* ciEnv::the_null_string() {
287 287 if (_the_null_string == NULL) {
288 288 VM_ENTRY_MARK;
289 289 _the_null_string = get_object(Universe::the_null_string())->as_instance();
290 290 }
291 291 return _the_null_string;
292 292 }
293 293
294 294 ciInstance* ciEnv::the_min_jint_string() {
295 295 if (_the_min_jint_string == NULL) {
296 296 VM_ENTRY_MARK;
297 297 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
298 298 }
299 299 return _the_min_jint_string;
300 300 }
301 301
302 302 // ------------------------------------------------------------------
303 303 // ciEnv::get_method_from_handle
304 304 ciMethod* ciEnv::get_method_from_handle(jobject method) {
305 305 VM_ENTRY_MARK;
306 306 return get_object(JNIHandles::resolve(method))->as_method();
307 307 }
308 308
309 309 // ------------------------------------------------------------------
310 310 // ciEnv::make_array
311 311 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) {
312 312 VM_ENTRY_MARK;
313 313 int length = objects->length();
314 314 objArrayOop a = oopFactory::new_system_objArray(length, THREAD);
315 315 if (HAS_PENDING_EXCEPTION) {
316 316 CLEAR_PENDING_EXCEPTION;
317 317 record_out_of_memory_failure();
318 318 return NULL;
319 319 }
320 320 for (int i = 0; i < length; i++) {
321 321 a->obj_at_put(i, objects->at(i)->get_oop());
322 322 }
323 323 assert(a->is_perm(), "");
324 324 return get_object(a)->as_array();
325 325 }
326 326
327 327
328 328 // ------------------------------------------------------------------
329 329 // ciEnv::array_element_offset_in_bytes
330 330 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
331 331 VM_ENTRY_MARK;
332 332 objArrayOop a = (objArrayOop)a_h->get_oop();
333 333 assert(a->is_objArray(), "");
334 334 int length = a->length();
335 335 oop o = o_h->get_oop();
336 336 for (int i = 0; i < length; i++) {
337 337 if (a->obj_at(i) == o) return i;
338 338 }
339 339 return -1;
340 340 }
341 341
342 342
343 343 // ------------------------------------------------------------------
344 344 // ciEnv::check_klass_accessiblity
345 345 //
346 346 // Note: the logic of this method should mirror the logic of
347 347 // constantPoolOopDesc::verify_constant_pool_resolve.
348 348 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
349 349 klassOop resolved_klass) {
350 350 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
351 351 return true;
352 352 }
353 353 if (accessing_klass->is_obj_array()) {
354 354 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
355 355 }
356 356 if (!accessing_klass->is_instance_klass()) {
357 357 return true;
358 358 }
359 359
360 360 if (resolved_klass->klass_part()->oop_is_objArray()) {
361 361 // Find the element klass, if this is an array.
362 362 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass();
363 363 }
364 364 if (resolved_klass->klass_part()->oop_is_instance()) {
365 365 return Reflection::verify_class_access(accessing_klass->get_klassOop(),
366 366 resolved_klass,
367 367 true);
368 368 }
369 369 return true;
370 370 }
371 371
372 372 // ------------------------------------------------------------------
373 373 // ciEnv::get_klass_by_name_impl
374 374 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
375 375 constantPoolHandle cpool,
376 376 ciSymbol* name,
377 377 bool require_local) {
378 378 ASSERT_IN_VM;
379 379 EXCEPTION_CONTEXT;
380 380
381 381 // Now we need to check the SystemDictionary
382 382 Symbol* sym = name->get_symbol();
383 383 if (sym->byte_at(0) == 'L' &&
384 384 sym->byte_at(sym->utf8_length()-1) == ';') {
385 385 // This is a name from a signature. Strip off the trimmings.
386 386 // Call recursive to keep scope of strippedsym.
387 387 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
388 388 sym->utf8_length()-2,
389 389 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
390 390 ciSymbol* strippedname = get_symbol(strippedsym);
391 391 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
392 392 }
393 393
394 394 // Check for prior unloaded klass. The SystemDictionary's answers
395 395 // can vary over time but the compiler needs consistency.
396 396 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
397 397 if (unloaded_klass != NULL) {
398 398 if (require_local) return NULL;
399 399 return unloaded_klass;
400 400 }
401 401
402 402 Handle loader(THREAD, (oop)NULL);
403 403 Handle domain(THREAD, (oop)NULL);
404 404 if (accessing_klass != NULL) {
405 405 loader = Handle(THREAD, accessing_klass->loader());
406 406 domain = Handle(THREAD, accessing_klass->protection_domain());
407 407 }
408 408
409 409 // setup up the proper type to return on OOM
410 410 ciKlass* fail_type;
411 411 if (sym->byte_at(0) == '[') {
412 412 fail_type = _unloaded_ciobjarrayklass;
413 413 } else {
414 414 fail_type = _unloaded_ciinstance_klass;
415 415 }
416 416 KlassHandle found_klass;
417 417 {
418 418 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
419 419 MutexLocker ml(Compile_lock);
420 420 klassOop kls;
421 421 if (!require_local) {
422 422 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
423 423 KILL_COMPILE_ON_FATAL_(fail_type));
424 424 } else {
425 425 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
426 426 KILL_COMPILE_ON_FATAL_(fail_type));
427 427 }
428 428 found_klass = KlassHandle(THREAD, kls);
429 429 }
430 430
431 431 // If we fail to find an array klass, look again for its element type.
432 432 // The element type may be available either locally or via constraints.
433 433 // In either case, if we can find the element type in the system dictionary,
434 434 // we must build an array type around it. The CI requires array klasses
435 435 // to be loaded if their element klasses are loaded, except when memory
436 436 // is exhausted.
437 437 if (sym->byte_at(0) == '[' &&
438 438 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
439 439 // We have an unloaded array.
440 440 // Build it on the fly if the element class exists.
441 441 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
442 442 sym->utf8_length()-1,
443 443 KILL_COMPILE_ON_FATAL_(fail_type));
444 444
445 445 // Get element ciKlass recursively.
446 446 ciKlass* elem_klass =
447 447 get_klass_by_name_impl(accessing_klass,
448 448 cpool,
449 449 get_symbol(elem_sym),
450 450 require_local);
451 451 if (elem_klass != NULL && elem_klass->is_loaded()) {
452 452 // Now make an array for it
453 453 return ciObjArrayKlass::make_impl(elem_klass);
454 454 }
455 455 }
456 456
457 457 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
458 458 // Look inside the constant pool for pre-resolved class entries.
459 459 for (int i = cpool->length() - 1; i >= 1; i--) {
460 460 if (cpool->tag_at(i).is_klass()) {
461 461 klassOop kls = cpool->resolved_klass_at(i);
462 462 if (Klass::cast(kls)->name() == sym) {
463 463 found_klass = KlassHandle(THREAD, kls);
464 464 break;
465 465 }
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466 466 }
467 467 }
468 468 }
469 469
470 470 if (found_klass() != NULL) {
471 471 // Found it. Build a CI handle.
472 472 return get_object(found_klass())->as_klass();
473 473 }
474 474
475 475 if (require_local) return NULL;
476 +
476 477 // Not yet loaded into the VM, or not governed by loader constraints.
477 478 // Make a CI representative for it.
478 479 return get_unloaded_klass(accessing_klass, name);
479 480 }
480 481
481 482 // ------------------------------------------------------------------
482 483 // ciEnv::get_klass_by_name
483 484 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
484 485 ciSymbol* klass_name,
485 486 bool require_local) {
486 487 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
487 488 constantPoolHandle(),
488 489 klass_name,
489 490 require_local);)
490 491 }
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491 492
492 493 // ------------------------------------------------------------------
493 494 // ciEnv::get_klass_by_index_impl
494 495 //
495 496 // Implementation of get_klass_by_index.
496 497 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool,
497 498 int index,
498 499 bool& is_accessible,
499 500 ciInstanceKlass* accessor) {
500 501 EXCEPTION_CONTEXT;
501 - KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index));
502 + KlassHandle klass(THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index));
502 503 Symbol* klass_name = NULL;
503 504 if (klass.is_null()) {
504 505 // The klass has not been inserted into the constant pool.
505 506 // Try to look it up by name.
506 507 {
507 508 // We have to lock the cpool to keep the oop from being resolved
508 509 // while we are accessing it.
509 510 ObjectLocker ol(cpool, THREAD);
510 511
511 512 constantTag tag = cpool->tag_at(index);
512 513 if (tag.is_klass()) {
513 514 // The klass has been inserted into the constant pool
514 515 // very recently.
515 516 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index));
516 517 } else if (tag.is_symbol()) {
517 518 klass_name = cpool->symbol_at(index);
518 519 } else {
519 520 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag");
520 521 klass_name = cpool->unresolved_klass_at(index);
521 522 }
522 523 }
523 524 }
524 525
525 526 if (klass.is_null()) {
526 527 // Not found in constant pool. Use the name to do the lookup.
527 528 ciKlass* k = get_klass_by_name_impl(accessor,
528 529 cpool,
529 530 get_symbol(klass_name),
530 531 false);
531 532 // Calculate accessibility the hard way.
532 533 if (!k->is_loaded()) {
533 534 is_accessible = false;
534 535 } else if (k->loader() != accessor->loader() &&
535 536 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
536 537 // Loaded only remotely. Not linked yet.
537 538 is_accessible = false;
538 539 } else {
539 540 // Linked locally, and we must also check public/private, etc.
540 541 is_accessible = check_klass_accessibility(accessor, k->get_klassOop());
541 542 }
542 543 return k;
543 544 }
544 545
545 546 // Check for prior unloaded klass. The SystemDictionary's answers
546 547 // can vary over time but the compiler needs consistency.
547 548 ciSymbol* name = get_symbol(klass()->klass_part()->name());
548 549 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
549 550 if (unloaded_klass != NULL) {
550 551 is_accessible = false;
551 552 return unloaded_klass;
552 553 }
553 554
554 555 // It is known to be accessible, since it was found in the constant pool.
555 556 is_accessible = true;
556 557 return get_object(klass())->as_klass();
557 558 }
558 559
559 560 // ------------------------------------------------------------------
560 561 // ciEnv::get_klass_by_index
561 562 //
562 563 // Get a klass from the constant pool.
563 564 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool,
564 565 int index,
565 566 bool& is_accessible,
566 567 ciInstanceKlass* accessor) {
567 568 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
568 569 }
569 570
570 571 // ------------------------------------------------------------------
571 572 // ciEnv::get_constant_by_index_impl
572 573 //
573 574 // Implementation of get_constant_by_index().
574 575 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool,
575 576 int pool_index, int cache_index,
576 577 ciInstanceKlass* accessor) {
577 578 bool ignore_will_link;
578 579 EXCEPTION_CONTEXT;
579 580 int index = pool_index;
580 581 if (cache_index >= 0) {
581 582 assert(index < 0, "only one kind of index at a time");
582 583 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index);
583 584 index = cpc_entry->constant_pool_index();
584 585 oop obj = cpc_entry->f1();
585 586 if (obj != NULL) {
586 587 assert(obj->is_instance() || obj->is_array(), "must be a Java reference");
587 588 ciObject* ciobj = get_object(obj);
588 589 return ciConstant(T_OBJECT, ciobj);
589 590 }
590 591 }
591 592 constantTag tag = cpool->tag_at(index);
592 593 if (tag.is_int()) {
593 594 return ciConstant(T_INT, (jint)cpool->int_at(index));
594 595 } else if (tag.is_long()) {
595 596 return ciConstant((jlong)cpool->long_at(index));
596 597 } else if (tag.is_float()) {
597 598 return ciConstant((jfloat)cpool->float_at(index));
598 599 } else if (tag.is_double()) {
599 600 return ciConstant((jdouble)cpool->double_at(index));
600 601 } else if (tag.is_string() || tag.is_unresolved_string()) {
601 602 oop string = NULL;
602 603 if (cpool->is_pseudo_string_at(index)) {
603 604 string = cpool->pseudo_string_at(index);
604 605 } else {
605 606 string = cpool->string_at(index, THREAD);
606 607 if (HAS_PENDING_EXCEPTION) {
607 608 CLEAR_PENDING_EXCEPTION;
608 609 record_out_of_memory_failure();
609 610 return ciConstant();
610 611 }
611 612 }
612 613 ciObject* constant = get_object(string);
613 614 assert (constant->is_instance(), "must be an instance, or not? ");
614 615 return ciConstant(T_OBJECT, constant);
615 616 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
616 617 // 4881222: allow ldc to take a class type
617 618 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
618 619 if (HAS_PENDING_EXCEPTION) {
619 620 CLEAR_PENDING_EXCEPTION;
620 621 record_out_of_memory_failure();
621 622 return ciConstant();
622 623 }
623 624 assert (klass->is_instance_klass() || klass->is_array_klass(),
624 625 "must be an instance or array klass ");
625 626 return ciConstant(T_OBJECT, klass->java_mirror());
626 627 } else if (tag.is_object()) {
627 628 oop obj = cpool->object_at(index);
628 629 assert(obj->is_instance() || obj->is_array(), "must be a Java reference");
629 630 ciObject* ciobj = get_object(obj);
630 631 return ciConstant(T_OBJECT, ciobj);
631 632 } else if (tag.is_method_type()) {
632 633 // must execute Java code to link this CP entry into cache[i].f1
633 634 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
634 635 ciObject* ciobj = get_unloaded_method_type_constant(signature);
635 636 return ciConstant(T_OBJECT, ciobj);
636 637 } else if (tag.is_method_handle()) {
637 638 // must execute Java code to link this CP entry into cache[i].f1
638 639 int ref_kind = cpool->method_handle_ref_kind_at(index);
639 640 int callee_index = cpool->method_handle_klass_index_at(index);
640 641 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
641 642 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
642 643 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
643 644 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
644 645 return ciConstant(T_OBJECT, ciobj);
645 646 } else {
646 647 ShouldNotReachHere();
647 648 return ciConstant();
648 649 }
649 650 }
650 651
651 652 // ------------------------------------------------------------------
652 653 // ciEnv::get_constant_by_index
653 654 //
654 655 // Pull a constant out of the constant pool. How appropriate.
655 656 //
656 657 // Implementation note: this query is currently in no way cached.
657 658 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool,
658 659 int pool_index, int cache_index,
659 660 ciInstanceKlass* accessor) {
660 661 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
661 662 }
662 663
663 664 // ------------------------------------------------------------------
664 665 // ciEnv::get_field_by_index_impl
665 666 //
666 667 // Implementation of get_field_by_index.
667 668 //
668 669 // Implementation note: the results of field lookups are cached
669 670 // in the accessor klass.
670 671 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
671 672 int index) {
672 673 ciConstantPoolCache* cache = accessor->field_cache();
673 674 if (cache == NULL) {
674 675 ciField* field = new (arena()) ciField(accessor, index);
675 676 return field;
676 677 } else {
677 678 ciField* field = (ciField*)cache->get(index);
678 679 if (field == NULL) {
679 680 field = new (arena()) ciField(accessor, index);
680 681 cache->insert(index, field);
681 682 }
682 683 return field;
683 684 }
684 685 }
685 686
686 687 // ------------------------------------------------------------------
687 688 // ciEnv::get_field_by_index
688 689 //
689 690 // Get a field by index from a klass's constant pool.
690 691 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
691 692 int index) {
692 693 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
693 694 }
694 695
695 696 // ------------------------------------------------------------------
696 697 // ciEnv::lookup_method
697 698 //
698 699 // Perform an appropriate method lookup based on accessor, holder,
699 700 // name, signature, and bytecode.
700 701 methodOop ciEnv::lookup_method(instanceKlass* accessor,
701 702 instanceKlass* holder,
702 703 Symbol* name,
703 704 Symbol* sig,
704 705 Bytecodes::Code bc) {
705 706 EXCEPTION_CONTEXT;
706 707 KlassHandle h_accessor(THREAD, accessor);
707 708 KlassHandle h_holder(THREAD, holder);
708 709 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
709 710 methodHandle dest_method;
710 711 switch (bc) {
711 712 case Bytecodes::_invokestatic:
712 713 dest_method =
713 714 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor);
714 715 break;
715 716 case Bytecodes::_invokespecial:
716 717 dest_method =
717 718 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor);
718 719 break;
719 720 case Bytecodes::_invokeinterface:
720 721 dest_method =
721 722 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig,
722 723 h_accessor, true);
723 724 break;
724 725 case Bytecodes::_invokevirtual:
725 726 dest_method =
726 727 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig,
727 728 h_accessor, true);
728 729 break;
729 730 default: ShouldNotReachHere();
730 731 }
731 732
732 733 return dest_method();
733 734 }
734 735
735 736
736 737 // ------------------------------------------------------------------
737 738 // ciEnv::get_method_by_index_impl
738 739 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool,
739 740 int index, Bytecodes::Code bc,
740 741 ciInstanceKlass* accessor) {
741 742 int holder_index = cpool->klass_ref_index_at(index);
742 743 bool holder_is_accessible;
743 744 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
744 745 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
745 746
746 747 // Get the method's name and signature.
747 748 Symbol* name_sym = cpool->name_ref_at(index);
748 749 Symbol* sig_sym = cpool->signature_ref_at(index);
749 750
750 751 if (cpool->has_preresolution()
751 752 || (holder == ciEnv::MethodHandle_klass() &&
752 753 methodOopDesc::is_method_handle_invoke_name(name_sym))) {
753 754 // Short-circuit lookups for JSR 292-related call sites.
754 755 // That is, do not rely only on name-based lookups, because they may fail
755 756 // if the names are not resolvable in the boot class loader (7056328).
756 757 switch (bc) {
757 758 case Bytecodes::_invokevirtual:
758 759 case Bytecodes::_invokeinterface:
759 760 case Bytecodes::_invokespecial:
760 761 case Bytecodes::_invokestatic:
761 762 {
762 763 methodOop m = constantPoolOopDesc::method_at_if_loaded(cpool, index, bc);
763 764 if (m != NULL) {
764 765 return get_object(m)->as_method();
765 766 }
766 767 }
767 768 }
768 769 }
769 770
770 771 if (holder_is_accessible) { // Our declared holder is loaded.
771 772 instanceKlass* lookup = declared_holder->get_instanceKlass();
772 773 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
773 774 if (m != NULL &&
774 775 (bc == Bytecodes::_invokestatic
775 776 ? instanceKlass::cast(m->method_holder())->is_not_initialized()
776 777 : !instanceKlass::cast(m->method_holder())->is_loaded())) {
777 778 m = NULL;
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778 779 }
779 780 if (m != NULL) {
780 781 // We found the method.
781 782 return get_object(m)->as_method();
782 783 }
783 784 }
784 785
785 786 // Either the declared holder was not loaded, or the method could
786 787 // not be found. Create a dummy ciMethod to represent the failed
787 788 // lookup.
788 -
789 - return get_unloaded_method(declared_holder,
790 - get_symbol(name_sym),
791 - get_symbol(sig_sym));
789 + ciSymbol* name = get_symbol(name_sym);
790 + ciSymbol* signature = get_symbol(sig_sym);
791 + return get_unloaded_method(declared_holder, name, signature, accessor);
792 792 }
793 793
794 794
795 795 // ------------------------------------------------------------------
796 796 // ciEnv::get_fake_invokedynamic_method_impl
797 797 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool,
798 - int index, Bytecodes::Code bc) {
798 + int index, Bytecodes::Code bc,
799 + ciInstanceKlass* accessor) {
799 800 // Compare the following logic with InterpreterRuntime::resolve_invokedynamic.
800 801 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic");
801 802
802 803 bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc);
803 804 if (is_resolved && cpool->cache()->secondary_entry_at(index)->is_f1_null())
804 805 // FIXME: code generation could allow for null (unlinked) call site
805 806 is_resolved = false;
806 807
807 808 // Call site might not be resolved yet. We could create a real invoker method from the
808 809 // compiler, but it is simpler to stop the code path here with an unlinked method.
809 810 if (!is_resolved) {
810 - ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass();
811 - ciSymbol* sig_sym = get_symbol(cpool->signature_ref_at(index));
812 - return get_unloaded_method(mh_klass, ciSymbol::invokeExact_name(), sig_sym);
811 + ciInstanceKlass* holder = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass();
812 + ciSymbol* name = ciSymbol::invokeExact_name();
813 + ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
814 + return get_unloaded_method(holder, name, signature, accessor);
813 815 }
814 816
815 817 // Get the invoker methodOop from the constant pool.
816 818 oop f1_value = cpool->cache()->main_entry_at(index)->f1();
817 819 methodOop signature_invoker = (methodOop) f1_value;
818 820 assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(),
819 821 "correct result from LinkResolver::resolve_invokedynamic");
820 822
821 823 return get_object(signature_invoker)->as_method();
822 824 }
823 825
824 826
825 827 // ------------------------------------------------------------------
826 828 // ciEnv::get_instance_klass_for_declared_method_holder
827 829 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
828 830 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
829 831 // instead of a ciInstanceKlass. For that case simply pretend that the
830 832 // declared holder is Object.clone since that's where the call will bottom out.
831 833 // A more correct fix would trickle out through many interfaces in CI,
832 834 // requiring ciInstanceKlass* to become ciKlass* and many more places would
833 835 // require checks to make sure the expected type was found. Given that this
834 836 // only occurs for clone() the more extensive fix seems like overkill so
835 837 // instead we simply smear the array type into Object.
836 838 if (method_holder->is_instance_klass()) {
837 839 return method_holder->as_instance_klass();
838 840 } else if (method_holder->is_array_klass()) {
839 841 return current()->Object_klass();
840 842 } else {
841 843 ShouldNotReachHere();
842 844 }
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843 845 return NULL;
844 846 }
845 847
846 848
847 849 // ------------------------------------------------------------------
848 850 // ciEnv::get_method_by_index
849 851 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool,
850 852 int index, Bytecodes::Code bc,
851 853 ciInstanceKlass* accessor) {
852 854 if (bc == Bytecodes::_invokedynamic) {
853 - GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);)
855 + GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc, accessor);)
854 856 } else {
855 - GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
857 + GUARDED_VM_ENTRY(return get_method_by_index_impl( cpool, index, bc, accessor);)
856 858 }
857 859 }
858 860
859 861
860 862 // ------------------------------------------------------------------
861 863 // ciEnv::name_buffer
862 864 char *ciEnv::name_buffer(int req_len) {
863 865 if (_name_buffer_len < req_len) {
864 866 if (_name_buffer == NULL) {
865 867 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
866 868 _name_buffer_len = req_len;
867 869 } else {
868 870 _name_buffer =
869 871 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
870 872 _name_buffer_len = req_len;
871 873 }
872 874 }
873 875 return _name_buffer;
874 876 }
875 877
876 878 // ------------------------------------------------------------------
877 879 // ciEnv::is_in_vm
878 880 bool ciEnv::is_in_vm() {
879 881 return JavaThread::current()->thread_state() == _thread_in_vm;
880 882 }
881 883
882 884 bool ciEnv::system_dictionary_modification_counter_changed() {
883 885 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
884 886 }
885 887
886 888 // ------------------------------------------------------------------
887 889 // ciEnv::validate_compile_task_dependencies
888 890 //
889 891 // Check for changes during compilation (e.g. class loads, evolution,
890 892 // breakpoints, call site invalidation).
891 893 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
892 894 if (failing()) return; // no need for further checks
893 895
894 896 // First, check non-klass dependencies as we might return early and
895 897 // not check klass dependencies if the system dictionary
896 898 // modification counter hasn't changed (see below).
897 899 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
898 900 if (deps.is_klass_type()) continue; // skip klass dependencies
899 901 klassOop witness = deps.check_dependency();
900 902 if (witness != NULL) {
901 903 record_failure("invalid non-klass dependency");
902 904 return;
903 905 }
904 906 }
905 907
906 908 // Klass dependencies must be checked when the system dictionary
907 909 // changes. If logging is enabled all violated dependences will be
908 910 // recorded in the log. In debug mode check dependencies even if
909 911 // the system dictionary hasn't changed to verify that no invalid
910 912 // dependencies were inserted. Any violated dependences in this
911 913 // case are dumped to the tty.
912 914 bool counter_changed = system_dictionary_modification_counter_changed();
913 915
914 916 bool verify_deps = trueInDebug;
915 917 if (!counter_changed && !verify_deps) return;
916 918
917 919 int klass_violations = 0;
918 920 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
919 921 if (!deps.is_klass_type()) continue; // skip non-klass dependencies
920 922 klassOop witness = deps.check_dependency();
921 923 if (witness != NULL) {
922 924 klass_violations++;
923 925 if (!counter_changed) {
924 926 // Dependence failed but counter didn't change. Log a message
925 927 // describing what failed and allow the assert at the end to
926 928 // trigger.
927 929 deps.print_dependency(witness);
928 930 } else if (xtty == NULL) {
929 931 // If we're not logging then a single violation is sufficient,
930 932 // otherwise we want to log all the dependences which were
931 933 // violated.
932 934 break;
933 935 }
934 936 }
935 937 }
936 938
937 939 if (klass_violations != 0) {
938 940 #ifdef ASSERT
939 941 if (!counter_changed && !PrintCompilation) {
940 942 // Print out the compile task that failed
941 943 _task->print_line();
942 944 }
943 945 #endif
944 946 assert(counter_changed, "failed dependencies, but counter didn't change");
945 947 record_failure("concurrent class loading");
946 948 }
947 949 }
948 950
949 951 // ------------------------------------------------------------------
950 952 // ciEnv::register_method
951 953 void ciEnv::register_method(ciMethod* target,
952 954 int entry_bci,
953 955 CodeOffsets* offsets,
954 956 int orig_pc_offset,
955 957 CodeBuffer* code_buffer,
956 958 int frame_words,
957 959 OopMapSet* oop_map_set,
958 960 ExceptionHandlerTable* handler_table,
959 961 ImplicitExceptionTable* inc_table,
960 962 AbstractCompiler* compiler,
961 963 int comp_level,
962 964 bool has_unsafe_access) {
963 965 VM_ENTRY_MARK;
964 966 nmethod* nm = NULL;
965 967 {
966 968 // To prevent compile queue updates.
967 969 MutexLocker locker(MethodCompileQueue_lock, THREAD);
968 970
969 971 // Prevent SystemDictionary::add_to_hierarchy from running
970 972 // and invalidating our dependencies until we install this method.
971 973 MutexLocker ml(Compile_lock);
972 974
973 975 // Change in Jvmti state may invalidate compilation.
974 976 if (!failing() &&
975 977 ( (!jvmti_can_hotswap_or_post_breakpoint() &&
976 978 JvmtiExport::can_hotswap_or_post_breakpoint()) ||
977 979 (!jvmti_can_access_local_variables() &&
978 980 JvmtiExport::can_access_local_variables()) ||
979 981 (!jvmti_can_post_on_exceptions() &&
980 982 JvmtiExport::can_post_on_exceptions()) )) {
981 983 record_failure("Jvmti state change invalidated dependencies");
982 984 }
983 985
984 986 // Change in DTrace flags may invalidate compilation.
985 987 if (!failing() &&
986 988 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
987 989 (!dtrace_method_probes() && DTraceMethodProbes) ||
988 990 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
989 991 record_failure("DTrace flags change invalidated dependencies");
990 992 }
991 993
992 994 if (!failing()) {
993 995 if (log() != NULL) {
994 996 // Log the dependencies which this compilation declares.
995 997 dependencies()->log_all_dependencies();
996 998 }
997 999
998 1000 // Encode the dependencies now, so we can check them right away.
999 1001 dependencies()->encode_content_bytes();
1000 1002
1001 1003 // Check for {class loads, evolution, breakpoints, ...} during compilation
1002 1004 validate_compile_task_dependencies(target);
1003 1005 }
1004 1006
1005 1007 methodHandle method(THREAD, target->get_methodOop());
1006 1008
1007 1009 if (failing()) {
1008 1010 // While not a true deoptimization, it is a preemptive decompile.
1009 1011 methodDataOop mdo = method()->method_data();
1010 1012 if (mdo != NULL) {
1011 1013 mdo->inc_decompile_count();
1012 1014 }
1013 1015
1014 1016 // All buffers in the CodeBuffer are allocated in the CodeCache.
1015 1017 // If the code buffer is created on each compile attempt
1016 1018 // as in C2, then it must be freed.
1017 1019 code_buffer->free_blob();
1018 1020 return;
1019 1021 }
1020 1022
1021 1023 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1022 1024 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1023 1025
1024 1026 nm = nmethod::new_nmethod(method,
1025 1027 compile_id(),
1026 1028 entry_bci,
1027 1029 offsets,
1028 1030 orig_pc_offset,
1029 1031 debug_info(), dependencies(), code_buffer,
1030 1032 frame_words, oop_map_set,
1031 1033 handler_table, inc_table,
1032 1034 compiler, comp_level);
1033 1035
1034 1036 // Free codeBlobs
1035 1037 code_buffer->free_blob();
1036 1038
1037 1039 // stress test 6243940 by immediately making the method
1038 1040 // non-entrant behind the system's back. This has serious
1039 1041 // side effects on the code cache and is not meant for
1040 1042 // general stress testing
1041 1043 if (nm != NULL && StressNonEntrant) {
1042 1044 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
1043 1045 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(),
1044 1046 SharedRuntime::get_handle_wrong_method_stub());
1045 1047 }
1046 1048
1047 1049 if (nm == NULL) {
1048 1050 // The CodeCache is full. Print out warning and disable compilation.
1049 1051 record_failure("code cache is full");
1050 1052 {
1051 1053 MutexUnlocker ml(Compile_lock);
1052 1054 MutexUnlocker locker(MethodCompileQueue_lock);
1053 1055 CompileBroker::handle_full_code_cache();
1054 1056 }
1055 1057 } else {
1056 1058 nm->set_has_unsafe_access(has_unsafe_access);
1057 1059
1058 1060 // Record successful registration.
1059 1061 // (Put nm into the task handle *before* publishing to the Java heap.)
1060 1062 if (task() != NULL) task()->set_code(nm);
1061 1063
1062 1064 if (entry_bci == InvocationEntryBci) {
1063 1065 if (TieredCompilation) {
1064 1066 // If there is an old version we're done with it
1065 1067 nmethod* old = method->code();
1066 1068 if (TraceMethodReplacement && old != NULL) {
1067 1069 ResourceMark rm;
1068 1070 char *method_name = method->name_and_sig_as_C_string();
1069 1071 tty->print_cr("Replacing method %s", method_name);
1070 1072 }
1071 1073 if (old != NULL ) {
1072 1074 old->make_not_entrant();
1073 1075 }
1074 1076 }
1075 1077 if (TraceNMethodInstalls ) {
1076 1078 ResourceMark rm;
1077 1079 char *method_name = method->name_and_sig_as_C_string();
1078 1080 ttyLocker ttyl;
1079 1081 tty->print_cr("Installing method (%d) %s ",
1080 1082 comp_level,
1081 1083 method_name);
1082 1084 }
1083 1085 // Allow the code to be executed
1084 1086 method->set_code(method, nm);
1085 1087 } else {
1086 1088 if (TraceNMethodInstalls ) {
1087 1089 ResourceMark rm;
1088 1090 char *method_name = method->name_and_sig_as_C_string();
1089 1091 ttyLocker ttyl;
1090 1092 tty->print_cr("Installing osr method (%d) %s @ %d",
1091 1093 comp_level,
1092 1094 method_name,
1093 1095 entry_bci);
1094 1096 }
1095 1097 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm);
1096 1098
1097 1099 }
1098 1100 }
1099 1101 }
1100 1102 // JVMTI -- compiled method notification (must be done outside lock)
1101 1103 if (nm != NULL) {
1102 1104 nm->post_compiled_method_load_event();
1103 1105 }
1104 1106
1105 1107 }
1106 1108
1107 1109
1108 1110 // ------------------------------------------------------------------
1109 1111 // ciEnv::find_system_klass
1110 1112 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1111 1113 VM_ENTRY_MARK;
1112 1114 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1113 1115 }
1114 1116
1115 1117 // ------------------------------------------------------------------
1116 1118 // ciEnv::comp_level
1117 1119 int ciEnv::comp_level() {
1118 1120 if (task() == NULL) return CompLevel_highest_tier;
1119 1121 return task()->comp_level();
1120 1122 }
1121 1123
1122 1124 // ------------------------------------------------------------------
1123 1125 // ciEnv::compile_id
1124 1126 uint ciEnv::compile_id() {
1125 1127 if (task() == NULL) return 0;
1126 1128 return task()->compile_id();
1127 1129 }
1128 1130
1129 1131 // ------------------------------------------------------------------
1130 1132 // ciEnv::notice_inlined_method()
1131 1133 void ciEnv::notice_inlined_method(ciMethod* method) {
1132 1134 _num_inlined_bytecodes += method->code_size();
1133 1135 }
1134 1136
1135 1137 // ------------------------------------------------------------------
1136 1138 // ciEnv::num_inlined_bytecodes()
1137 1139 int ciEnv::num_inlined_bytecodes() const {
1138 1140 return _num_inlined_bytecodes;
1139 1141 }
1140 1142
1141 1143 // ------------------------------------------------------------------
1142 1144 // ciEnv::record_failure()
1143 1145 void ciEnv::record_failure(const char* reason) {
1144 1146 if (log() != NULL) {
1145 1147 log()->elem("failure reason='%s'", reason);
1146 1148 }
1147 1149 if (_failure_reason == NULL) {
1148 1150 // Record the first failure reason.
1149 1151 _failure_reason = reason;
1150 1152 }
1151 1153 }
1152 1154
1153 1155 // ------------------------------------------------------------------
1154 1156 // ciEnv::record_method_not_compilable()
1155 1157 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1156 1158 int new_compilable =
1157 1159 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1158 1160
1159 1161 // Only note transitions to a worse state
1160 1162 if (new_compilable > _compilable) {
1161 1163 if (log() != NULL) {
1162 1164 if (all_tiers) {
1163 1165 log()->elem("method_not_compilable");
1164 1166 } else {
1165 1167 log()->elem("method_not_compilable_at_tier");
1166 1168 }
1167 1169 }
1168 1170 _compilable = new_compilable;
1169 1171
1170 1172 // Reset failure reason; this one is more important.
1171 1173 _failure_reason = NULL;
1172 1174 record_failure(reason);
1173 1175 }
1174 1176 }
1175 1177
1176 1178 // ------------------------------------------------------------------
1177 1179 // ciEnv::record_out_of_memory_failure()
1178 1180 void ciEnv::record_out_of_memory_failure() {
1179 1181 // If memory is low, we stop compiling methods.
1180 1182 record_method_not_compilable("out of memory");
1181 1183 }
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