1 /*
2 * Copyright (c) 2001, 2023, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "ci/ciMetadata.hpp"
27 #include "ci/ciMethodData.hpp"
28 #include "ci/ciReplay.hpp"
29 #include "ci/ciUtilities.inline.hpp"
30 #include "compiler/compiler_globals.hpp"
31 #include "memory/allocation.inline.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "oops/klass.inline.hpp"
34 #include "runtime/deoptimization.hpp"
35 #include "utilities/copy.hpp"
36
37 // ciMethodData
38
39 // ------------------------------------------------------------------
40 // ciMethodData::ciMethodData
41 //
42 ciMethodData::ciMethodData(MethodData* md)
43 : ciMetadata(md),
44 _data_size(0), _extra_data_size(0), _data(nullptr),
45 _parameters_data_offset(0),
46 _exception_handlers_data_offset(0),
47 // Set an initial hint. Don't use set_hint_di() because
48 // first_di() may be out of bounds if data_size is 0.
49 _hint_di(first_di()),
50 _state(empty_state),
51 _saw_free_extra_data(false),
52 // Initialize the escape information (to "don't know.");
53 _eflags(0), _arg_local(0), _arg_stack(0), _arg_returned(0),
54 _invocation_counter(0),
55 _orig() {}
56
57 // Check for entries that reference an unloaded method
58 class PrepareExtraDataClosure : public CleanExtraDataClosure {
59 MethodData* _mdo;
60 SafepointStateTracker _safepoint_tracker;
61 GrowableArray<Method*> _uncached_methods;
62
63 public:
64 PrepareExtraDataClosure(MethodData* mdo)
65 : _mdo(mdo),
66 _safepoint_tracker(SafepointSynchronize::safepoint_state_tracker()),
67 _uncached_methods()
68 { }
69
70 bool is_live(Method* m) {
71 if (!m->method_holder()->is_loader_alive()) {
72 return false;
73 }
74 if (CURRENT_ENV->cached_metadata(m) == nullptr) {
75 // Uncached entries need to be pre-populated.
76 _uncached_methods.append(m);
77 }
78 return true;
79 }
80
81 bool has_safepointed() {
82 return _safepoint_tracker.safepoint_state_changed();
83 }
84
85 bool finish() {
86 if (_uncached_methods.length() == 0) {
87 // Preparation finished iff all Methods* were already cached.
88 return true;
89 }
90 // Holding locks through safepoints is bad practice.
91 MutexUnlocker mu(_mdo->extra_data_lock());
92 for (int i = 0; i < _uncached_methods.length(); ++i) {
93 if (has_safepointed()) {
94 // The metadata in the growable array might contain stale
95 // entries after a safepoint.
96 return false;
97 }
98 Method* method = _uncached_methods.at(i);
99 // Populating ciEnv caches may cause safepoints due
100 // to taking the Compile_lock with safepoint checks.
101 (void)CURRENT_ENV->get_method(method);
102 }
103 return false;
104 }
105 };
106
107 void ciMethodData::prepare_metadata() {
108 MethodData* mdo = get_MethodData();
109
110 for (;;) {
111 ResourceMark rm;
112 PrepareExtraDataClosure cl(mdo);
113 mdo->clean_extra_data(&cl);
114 if (cl.finish()) {
115 // When encountering uncached metadata, the Compile_lock might be
116 // acquired when creating ciMetadata handles, causing safepoints
117 // which requires a new round of preparation to clean out potentially
118 // new unloading metadata.
119 return;
120 }
121 }
122 }
123
124 void ciMethodData::load_remaining_extra_data() {
125 MethodData* mdo = get_MethodData();
126 MutexLocker ml(mdo->extra_data_lock());
127 // Deferred metadata cleaning due to concurrent class unloading.
128 prepare_metadata();
129 // After metadata preparation, there is no stale metadata,
130 // and no safepoints can introduce more stale metadata.
131 NoSafepointVerifier no_safepoint;
132
133 assert((mdo->data_size() == _data_size) && (mdo->extra_data_size() == _extra_data_size), "sanity, unchanged");
134 assert(extra_data_base() == (DataLayout*)((address) _data + _data_size), "sanity");
135
136 // Copy the extra data once it is prepared (i.e. cache populated, no release of extra data lock anymore)
137 Copy::disjoint_words_atomic((HeapWord*) mdo->extra_data_base(),
138 (HeapWord*) extra_data_base(),
139 // copy everything from extra_data_base() up to parameters_data_base()
140 pointer_delta(parameters_data_base(), extra_data_base(), HeapWordSize));
141
142 // skip parameter data copying. Already done in 'load_data'
143
144 // copy exception handler data
145 Copy::disjoint_words_atomic((HeapWord*) mdo->exception_handler_data_base(),
146 (HeapWord*) exception_handler_data_base(),
147 exception_handler_data_size() / HeapWordSize);
148
149 // speculative trap entries also hold a pointer to a Method so need to be translated
150 DataLayout* dp_src = mdo->extra_data_base();
151 DataLayout* end_src = mdo->args_data_limit();
152 DataLayout* dp_dst = extra_data_base();
153 for (;; dp_src = MethodData::next_extra(dp_src), dp_dst = MethodData::next_extra(dp_dst)) {
154 assert(dp_src < end_src, "moved past end of extra data");
155 assert(((intptr_t)dp_dst) - ((intptr_t)extra_data_base()) == ((intptr_t)dp_src) - ((intptr_t)mdo->extra_data_base()), "source and destination don't match");
156
157 int tag = dp_src->tag();
158 switch(tag) {
159 case DataLayout::speculative_trap_data_tag: {
160 ciSpeculativeTrapData data_dst(dp_dst);
161 SpeculativeTrapData data_src(dp_src);
162 data_dst.translate_from(&data_src);
163 break;
164 }
165 case DataLayout::bit_data_tag:
166 break;
167 case DataLayout::no_tag:
168 case DataLayout::arg_info_data_tag:
169 // An empty slot or ArgInfoData entry marks the end of the trap data
170 {
171 return; // Need a block to avoid SS compiler bug
172 }
173 default:
174 fatal("bad tag = %d", tag);
175 }
176 }
177 }
178
179 bool ciMethodData::load_data() {
180 MethodData* mdo = get_MethodData();
181 if (mdo == nullptr) {
182 return false;
183 }
184
185 // To do: don't copy the data if it is not "ripe" -- require a minimum #
186 // of invocations.
187
188 // Snapshot the data and extra parameter data first without the extra trap and arg info data.
189 // Those are copied in a second step. Actually, an approximate snapshot of the data is taken.
190 // Any concurrently executing threads may be changing the data as we copy it.
191 //
192 // The first snapshot step requires two copies (data entries and parameter data entries) since
193 // the MDO is laid out as follows:
194 //
195 // data_base: ---------------------------
196 // | data entries |
197 // | ... |
198 // extra_data_base: ---------------------------
199 // | trap data entries |
200 // | ... |
201 // | one arg info data entry |
202 // | data for each arg |
203 // | ... |
204 // args_data_limit: ---------------------------
205 // | parameter data entries |
206 // | ... |
207 // param_data_limit: ---------------------------
208 // | ex handler data entries |
209 // | ... |
210 // extra_data_limit: ---------------------------
211 //
212 // _data_size = extra_data_base - data_base
213 // _extra_data_size = extra_data_limit - extra_data_base
214 // total_size = _data_size + _extra_data_size
215 // args_data_limit = param_data_base
216 // param_data_limit = exception_handler_data_base
217 // extra_data_limit = extra_data_limit
218
219 #ifndef ZERO
220 // Some Zero platforms do not have expected alignment, and do not use
221 // this code. static_assert would still fire and fail for them.
222 static_assert(sizeof(_orig) % HeapWordSize == 0, "align");
223 #endif
224 Copy::disjoint_words_atomic((HeapWord*) &mdo->_compiler_counters,
225 (HeapWord*) &_orig,
226 sizeof(_orig) / HeapWordSize);
227 Arena* arena = CURRENT_ENV->arena();
228 _data_size = mdo->data_size();
229 _extra_data_size = mdo->extra_data_size();
230 int total_size = _data_size + _extra_data_size;
231 _data = (intptr_t *) arena->Amalloc(total_size);
232 Copy::disjoint_words_atomic((HeapWord*) mdo->data_base(),
233 (HeapWord*) _data,
234 _data_size / HeapWordSize);
235 // Copy offsets. This is used below
236 _parameters_data_offset = mdo->parameters_type_data_di();
237 _exception_handlers_data_offset = mdo->exception_handlers_data_di();
238
239 int parameters_data_size = mdo->parameters_size_in_bytes();
240 if (parameters_data_size > 0) {
241 // Snapshot the parameter data
242 Copy::disjoint_words_atomic((HeapWord*) mdo->parameters_data_base(),
243 (HeapWord*) parameters_data_base(),
244 parameters_data_size / HeapWordSize);
245 }
246 // Traverse the profile data, translating any oops into their
247 // ci equivalents.
248 ResourceMark rm;
249 ciProfileData* ci_data = first_data();
250 ProfileData* data = mdo->first_data();
251 while (is_valid(ci_data)) {
252 ci_data->translate_from(data);
253 ci_data = next_data(ci_data);
254 data = mdo->next_data(data);
255 }
256 if (mdo->parameters_type_data() != nullptr) {
257 DataLayout* parameters_data = data_layout_at(_parameters_data_offset);
258 ciParametersTypeData* parameters = new ciParametersTypeData(parameters_data);
259 parameters->translate_from(mdo->parameters_type_data());
260 }
261
262 assert((DataLayout*) ((address)_data + total_size - parameters_data_size - exception_handler_data_size()) == args_data_limit(),
263 "sanity - parameter data starts after the argument data of the single ArgInfoData entry");
264 load_remaining_extra_data();
265
266 // Note: Extra data are all BitData, and do not need translation.
267 _invocation_counter = mdo->invocation_count();
268 if (_invocation_counter == 0 && mdo->backedge_count() > 0) {
269 // Avoid skewing counter data during OSR compilation.
270 // Sometimes, MDO is allocated during the very first invocation and OSR compilation is triggered
271 // solely by backedge counter while invocation counter stays zero. In such case, it's important
272 // to observe non-zero invocation count to properly scale profile counts (see ciMethod::scale_count()).
273 _invocation_counter = 1;
274 }
275
276 _state = mdo->is_mature() ? mature_state : immature_state;
277 _eflags = mdo->eflags();
278 _arg_local = mdo->arg_local();
279 _arg_stack = mdo->arg_stack();
280 _arg_returned = mdo->arg_returned();
281 if (ReplayCompiles) {
282 ciReplay::initialize(this);
283 if (is_empty()) {
284 return false;
285 }
286 }
287 return true;
288 }
289
290 void ciReceiverTypeData::translate_receiver_data_from(const ProfileData* data) {
291 for (uint row = 0; row < row_limit(); row++) {
292 Klass* k = data->as_ReceiverTypeData()->receiver(row);
293 if (k != nullptr) {
294 if (k->is_loader_alive()) {
295 ciKlass* klass = CURRENT_ENV->get_klass(k);
296 set_receiver(row, klass);
297 } else {
298 // With concurrent class unloading, the MDO could have stale metadata; override it
299 clear_row(row);
300 }
301 } else {
302 set_receiver(row, nullptr);
303 }
304 }
305 }
306
307 void ciTypeStackSlotEntries::translate_type_data_from(const TypeStackSlotEntries* entries) {
308 for (int i = 0; i < number_of_entries(); i++) {
309 intptr_t k = entries->type(i);
310 Klass* klass = (Klass*)klass_part(k);
311 if (klass != nullptr && !klass->is_loader_alive()) {
312 // With concurrent class unloading, the MDO could have stale metadata; override it
313 TypeStackSlotEntries::set_type(i, TypeStackSlotEntries::with_status((Klass*)nullptr, k));
314 } else {
315 TypeStackSlotEntries::set_type(i, translate_klass(k));
316 }
317 }
318 }
319
320 void ciReturnTypeEntry::translate_type_data_from(const ReturnTypeEntry* ret) {
321 intptr_t k = ret->type();
322 Klass* klass = (Klass*)klass_part(k);
323 if (klass != nullptr && !klass->is_loader_alive()) {
324 // With concurrent class unloading, the MDO could have stale metadata; override it
325 set_type(ReturnTypeEntry::with_status((Klass*)nullptr, k));
326 } else {
327 set_type(translate_klass(k));
328 }
329 }
330
331 void ciSpeculativeTrapData::translate_from(const ProfileData* data) {
332 Method* m = data->as_SpeculativeTrapData()->method();
333 ciMethod* ci_m = CURRENT_ENV->get_method(m);
334 set_method(ci_m);
335 }
336
337 // Get the data at an arbitrary (sort of) data index.
338 ciProfileData* ciMethodData::data_at(int data_index) {
339 if (out_of_bounds(data_index)) {
340 return nullptr;
341 }
342 DataLayout* data_layout = data_layout_at(data_index);
343 return data_from(data_layout);
344 }
345
346 ciProfileData* ciMethodData::data_from(DataLayout* data_layout) {
347 switch (data_layout->tag()) {
348 case DataLayout::no_tag:
349 default:
350 ShouldNotReachHere();
351 return nullptr;
352 case DataLayout::bit_data_tag:
353 return new ciBitData(data_layout);
354 case DataLayout::counter_data_tag:
355 return new ciCounterData(data_layout);
356 case DataLayout::jump_data_tag:
357 return new ciJumpData(data_layout);
358 case DataLayout::receiver_type_data_tag:
359 return new ciReceiverTypeData(data_layout);
360 case DataLayout::virtual_call_data_tag:
361 return new ciVirtualCallData(data_layout);
362 case DataLayout::ret_data_tag:
363 return new ciRetData(data_layout);
364 case DataLayout::branch_data_tag:
365 return new ciBranchData(data_layout);
366 case DataLayout::multi_branch_data_tag:
367 return new ciMultiBranchData(data_layout);
368 case DataLayout::arg_info_data_tag:
369 return new ciArgInfoData(data_layout);
370 case DataLayout::call_type_data_tag:
371 return new ciCallTypeData(data_layout);
372 case DataLayout::virtual_call_type_data_tag:
373 return new ciVirtualCallTypeData(data_layout);
374 case DataLayout::parameters_type_data_tag:
375 return new ciParametersTypeData(data_layout);
376 };
377 }
378
379 // Iteration over data.
380 ciProfileData* ciMethodData::next_data(ciProfileData* current) {
381 int current_index = dp_to_di(current->dp());
382 int next_index = current_index + current->size_in_bytes();
383 ciProfileData* next = data_at(next_index);
384 return next;
385 }
386
387 DataLayout* ciMethodData::next_data_layout_helper(DataLayout* current, bool extra) {
388 int current_index = dp_to_di((address)current);
389 int next_index = current_index + current->size_in_bytes();
390 if (extra ? out_of_bounds_extra(next_index) : out_of_bounds(next_index)) {
391 return nullptr;
392 }
393 DataLayout* next = data_layout_at(next_index);
394 return next;
395 }
396
397 DataLayout* ciMethodData::next_data_layout(DataLayout* current) {
398 return next_data_layout_helper(current, false);
399 }
400
401 DataLayout* ciMethodData::next_extra_data_layout(DataLayout* current) {
402 return next_data_layout_helper(current, true);
403 }
404
405 ciProfileData* ciMethodData::bci_to_extra_data(int bci, ciMethod* m, bool& two_free_slots) {
406 DataLayout* dp = extra_data_base();
407 DataLayout* end = args_data_limit();
408 two_free_slots = false;
409 for (;dp < end; dp = MethodData::next_extra(dp)) {
410 switch(dp->tag()) {
411 case DataLayout::no_tag:
412 _saw_free_extra_data = true; // observed an empty slot (common case)
413 two_free_slots = (MethodData::next_extra(dp)->tag() == DataLayout::no_tag);
414 return nullptr;
415 case DataLayout::arg_info_data_tag:
416 return nullptr; // ArgInfoData is after the trap data right before the parameter data.
417 case DataLayout::bit_data_tag:
418 if (m == nullptr && dp->bci() == bci) {
419 return new ciBitData(dp);
420 }
421 break;
422 case DataLayout::speculative_trap_data_tag: {
423 ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
424 // data->method() might be null if the MDO is snapshotted
425 // concurrently with a trap
426 if (m != nullptr && data->method() == m && dp->bci() == bci) {
427 return data;
428 }
429 break;
430 }
431 default:
432 fatal("bad tag = %d", dp->tag());
433 }
434 }
435 return nullptr;
436 }
437
438 // Translate a bci to its corresponding data, or nullptr.
439 ciProfileData* ciMethodData::bci_to_data(int bci, ciMethod* m) {
440 // If m is not nullptr we look for a SpeculativeTrapData entry
441 if (m == nullptr) {
442 DataLayout* data_layout = data_layout_before(bci);
443 for ( ; is_valid(data_layout); data_layout = next_data_layout(data_layout)) {
444 if (data_layout->bci() == bci) {
445 set_hint_di(dp_to_di((address)data_layout));
446 return data_from(data_layout);
447 } else if (data_layout->bci() > bci) {
448 break;
449 }
450 }
451 }
452 bool two_free_slots = false;
453 ciProfileData* result = bci_to_extra_data(bci, m, two_free_slots);
454 if (result != nullptr) {
455 return result;
456 }
457 if (m != nullptr && !two_free_slots) {
458 // We were looking for a SpeculativeTrapData entry we didn't
459 // find. Room is not available for more SpeculativeTrapData
460 // entries, look in the non SpeculativeTrapData entries.
461 return bci_to_data(bci, nullptr);
462 }
463 return nullptr;
464 }
465
466 ciBitData ciMethodData::exception_handler_bci_to_data(int bci) {
467 assert(ProfileExceptionHandlers, "not profiling");
468 assert(_data != nullptr, "must be initialized");
469 for (DataLayout* data = exception_handler_data_base(); data < exception_handler_data_limit(); data = next_extra_data_layout(data)) {
470 assert(data != nullptr, "out of bounds?");
471 if (data->bci() == bci) {
472 return ciBitData(data);
473 }
474 }
475 // called with invalid bci or wrong Method/MethodData
476 ShouldNotReachHere();
477 return ciBitData(nullptr);
478 }
479
480 // Conservatively decode the trap_state of a ciProfileData.
481 int ciMethodData::has_trap_at(ciProfileData* data, int reason) {
482 typedef Deoptimization::DeoptReason DR_t;
483 int per_bc_reason
484 = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason);
485 if (trap_count(reason) == 0) {
486 // Impossible for this trap to have occurred, regardless of trap_state.
487 // Note: This happens if the MDO is empty.
488 return 0;
489 } else if (per_bc_reason == Deoptimization::Reason_none) {
490 // We cannot conclude anything; a trap happened somewhere, maybe here.
491 return -1;
492 } else if (data == nullptr) {
493 // No profile here, not even an extra_data record allocated on the fly.
494 // If there are empty extra_data records, and there had been a trap,
495 // there would have been a non-null data pointer. If there are no
496 // free extra_data records, we must return a conservative -1.
497 if (_saw_free_extra_data)
498 return 0; // Q.E.D.
499 else
500 return -1; // bail with a conservative answer
501 } else {
502 return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason);
503 }
504 }
505
506 int ciMethodData::trap_recompiled_at(ciProfileData* data) {
507 if (data == nullptr) {
508 return (_saw_free_extra_data? 0: -1); // (see previous method)
509 } else {
510 return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0;
511 }
512 }
513
514 void ciMethodData::clear_escape_info() {
515 VM_ENTRY_MARK;
516 MethodData* mdo = get_MethodData();
517 if (mdo != nullptr) {
518 mdo->clear_escape_info();
519 ArgInfoData *aid = arg_info();
520 int arg_count = (aid == nullptr) ? 0 : aid->number_of_args();
521 for (int i = 0; i < arg_count; i++) {
522 set_arg_modified(i, 0);
523 }
524 }
525 _eflags = _arg_local = _arg_stack = _arg_returned = 0;
526 }
527
528 // copy our escape info to the MethodData* if it exists
529 void ciMethodData::update_escape_info() {
530 VM_ENTRY_MARK;
531 MethodData* mdo = get_MethodData();
532 if ( mdo != nullptr) {
533 mdo->set_eflags(_eflags);
534 mdo->set_arg_local(_arg_local);
535 mdo->set_arg_stack(_arg_stack);
536 mdo->set_arg_returned(_arg_returned);
537 int arg_count = mdo->method()->size_of_parameters();
538 for (int i = 0; i < arg_count; i++) {
539 mdo->set_arg_modified(i, arg_modified(i));
540 }
541 }
542 }
543
544 void ciMethodData::set_compilation_stats(short loops, short blocks) {
545 VM_ENTRY_MARK;
546 MethodData* mdo = get_MethodData();
547 if (mdo != nullptr) {
548 mdo->set_num_loops(loops);
549 mdo->set_num_blocks(blocks);
550 }
551 }
552
553 void ciMethodData::set_would_profile(bool p) {
554 VM_ENTRY_MARK;
555 MethodData* mdo = get_MethodData();
556 if (mdo != nullptr) {
557 mdo->set_would_profile(p);
558 }
559 }
560
561 void ciMethodData::set_argument_type(int bci, int i, ciKlass* k) {
562 VM_ENTRY_MARK;
563 MethodData* mdo = get_MethodData();
564 if (mdo != nullptr) {
565 ProfileData* data = mdo->bci_to_data(bci);
566 if (data != nullptr) {
567 if (data->is_CallTypeData()) {
568 data->as_CallTypeData()->set_argument_type(i, k->get_Klass());
569 } else {
570 assert(data->is_VirtualCallTypeData(), "no arguments!");
571 data->as_VirtualCallTypeData()->set_argument_type(i, k->get_Klass());
572 }
573 }
574 }
575 }
576
577 void ciMethodData::set_parameter_type(int i, ciKlass* k) {
578 VM_ENTRY_MARK;
579 MethodData* mdo = get_MethodData();
580 if (mdo != nullptr) {
581 mdo->parameters_type_data()->set_type(i, k->get_Klass());
582 }
583 }
584
585 void ciMethodData::set_return_type(int bci, ciKlass* k) {
586 VM_ENTRY_MARK;
587 MethodData* mdo = get_MethodData();
588 if (mdo != nullptr) {
589 ProfileData* data = mdo->bci_to_data(bci);
590 if (data != nullptr) {
591 if (data->is_CallTypeData()) {
592 data->as_CallTypeData()->set_return_type(k->get_Klass());
593 } else {
594 assert(data->is_VirtualCallTypeData(), "no arguments!");
595 data->as_VirtualCallTypeData()->set_return_type(k->get_Klass());
596 }
597 }
598 }
599 }
600
601 bool ciMethodData::has_escape_info() {
602 return eflag_set(MethodData::estimated);
603 }
604
605 void ciMethodData::set_eflag(MethodData::EscapeFlag f) {
606 set_bits(_eflags, f);
607 }
608
609 bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const {
610 return mask_bits(_eflags, f) != 0;
611 }
612
613 void ciMethodData::set_arg_local(int i) {
614 set_nth_bit(_arg_local, i);
615 }
616
617 void ciMethodData::set_arg_stack(int i) {
618 set_nth_bit(_arg_stack, i);
619 }
620
621 void ciMethodData::set_arg_returned(int i) {
622 set_nth_bit(_arg_returned, i);
623 }
624
625 void ciMethodData::set_arg_modified(int arg, uint val) {
626 ArgInfoData *aid = arg_info();
627 if (aid == nullptr)
628 return;
629 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
630 aid->set_arg_modified(arg, val);
631 }
632
633 bool ciMethodData::is_arg_local(int i) const {
634 return is_set_nth_bit(_arg_local, i);
635 }
636
637 bool ciMethodData::is_arg_stack(int i) const {
638 return is_set_nth_bit(_arg_stack, i);
639 }
640
641 bool ciMethodData::is_arg_returned(int i) const {
642 return is_set_nth_bit(_arg_returned, i);
643 }
644
645 uint ciMethodData::arg_modified(int arg) const {
646 ArgInfoData *aid = arg_info();
647 if (aid == nullptr)
648 return 0;
649 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
650 return aid->arg_modified(arg);
651 }
652
653 ciParametersTypeData* ciMethodData::parameters_type_data() const {
654 return parameter_data_size() != 0 ? new ciParametersTypeData(data_layout_at(_parameters_data_offset)) : nullptr;
655 }
656
657 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) {
658 // Get offset within MethodData* of the data array
659 ByteSize data_offset = MethodData::data_offset();
660
661 // Get cell offset of the ProfileData within data array
662 int cell_offset = dp_to_di(data->dp());
663
664 // Add in counter_offset, the # of bytes into the ProfileData of counter or flag
665 int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data);
666
667 return in_ByteSize(offset);
668 }
669
670 ciArgInfoData *ciMethodData::arg_info() const {
671 // Should be last, have to skip all traps.
672 DataLayout* dp = extra_data_base();
673 DataLayout* end = args_data_limit();
674 for (; dp < end; dp = MethodData::next_extra(dp)) {
675 if (dp->tag() == DataLayout::arg_info_data_tag)
676 return new ciArgInfoData(dp);
677 }
678 return nullptr;
679 }
680
681
682 // Implementation of the print method.
683 void ciMethodData::print_impl(outputStream* st) {
684 ciMetadata::print_impl(st);
685 }
686
687 void ciMethodData::dump_replay_data_type_helper(outputStream* out, int round, int& count, ProfileData* pdata, ByteSize offset, ciKlass* k) {
688 if (k != nullptr) {
689 if (round == 0) {
690 count++;
691 } else {
692 out->print(" %d %s", (int)(dp_to_di(pdata->dp() + in_bytes(offset)) / sizeof(intptr_t)),
693 CURRENT_ENV->replay_name(k));
694 }
695 }
696 }
697
698 template<class T> void ciMethodData::dump_replay_data_receiver_type_helper(outputStream* out, int round, int& count, T* vdata) {
699 for (uint i = 0; i < vdata->row_limit(); i++) {
700 dump_replay_data_type_helper(out, round, count, vdata, vdata->receiver_offset(i), vdata->receiver(i));
701 }
702 }
703
704 template<class T> void ciMethodData::dump_replay_data_call_type_helper(outputStream* out, int round, int& count, T* call_type_data) {
705 if (call_type_data->has_arguments()) {
706 for (int i = 0; i < call_type_data->number_of_arguments(); i++) {
707 dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->argument_type_offset(i), call_type_data->valid_argument_type(i));
708 }
709 }
710 if (call_type_data->has_return()) {
711 dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->return_type_offset(), call_type_data->valid_return_type());
712 }
713 }
714
715 void ciMethodData::dump_replay_data_extra_data_helper(outputStream* out, int round, int& count) {
716 DataLayout* dp = extra_data_base();
717 DataLayout* end = args_data_limit();
718
719 for (;dp < end; dp = MethodData::next_extra(dp)) {
720 switch(dp->tag()) {
721 case DataLayout::no_tag:
722 case DataLayout::arg_info_data_tag:
723 return;
724 case DataLayout::bit_data_tag:
725 break;
726 case DataLayout::speculative_trap_data_tag: {
727 ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
728 ciMethod* m = data->method();
729 if (m != nullptr) {
730 if (round == 0) {
731 count++;
732 } else {
733 out->print(" %d ", (int)(dp_to_di(((address)dp) + in_bytes(ciSpeculativeTrapData::method_offset())) / sizeof(intptr_t)));
734 m->dump_name_as_ascii(out);
735 }
736 }
737 break;
738 }
739 default:
740 fatal("bad tag = %d", dp->tag());
741 }
742 }
743 }
744
745 void ciMethodData::dump_replay_data(outputStream* out) {
746 ResourceMark rm;
747 MethodData* mdo = get_MethodData();
748 Method* method = mdo->method();
749 out->print("ciMethodData ");
750 ciMethod::dump_name_as_ascii(out, method);
751 out->print(" %d %d", _state, _invocation_counter);
752
753 // dump the contents of the MDO header as raw data
754 unsigned char* orig = (unsigned char*)&_orig;
755 int length = sizeof(_orig);
756 out->print(" orig %d", length);
757 for (int i = 0; i < length; i++) {
758 out->print(" %d", orig[i]);
759 }
760
761 // dump the MDO data as raw data
762 int elements = (data_size() + extra_data_size()) / sizeof(intptr_t);
763 out->print(" data %d", elements);
764 for (int i = 0; i < elements; i++) {
765 // We could use INTPTR_FORMAT here but that's zero justified
766 // which makes comparing it with the SA version of this output
767 // harder. data()'s element type is intptr_t.
768 out->print(" " INTX_FORMAT_X, data()[i]);
769 }
770
771 // The MDO contained oop references as ciObjects, so scan for those
772 // and emit pairs of offset and klass name so that they can be
773 // reconstructed at runtime. The first round counts the number of
774 // oop references and the second actually emits them.
775 ciParametersTypeData* parameters = parameters_type_data();
776 for (int count = 0, round = 0; round < 2; round++) {
777 if (round == 1) out->print(" oops %d", count);
778 ProfileData* pdata = first_data();
779 for ( ; is_valid(pdata); pdata = next_data(pdata)) {
780 if (pdata->is_VirtualCallData()) {
781 ciVirtualCallData* vdata = (ciVirtualCallData*)pdata;
782 dump_replay_data_receiver_type_helper<ciVirtualCallData>(out, round, count, vdata);
783 if (pdata->is_VirtualCallTypeData()) {
784 ciVirtualCallTypeData* call_type_data = (ciVirtualCallTypeData*)pdata;
785 dump_replay_data_call_type_helper<ciVirtualCallTypeData>(out, round, count, call_type_data);
786 }
787 } else if (pdata->is_ReceiverTypeData()) {
788 ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata;
789 dump_replay_data_receiver_type_helper<ciReceiverTypeData>(out, round, count, vdata);
790 } else if (pdata->is_CallTypeData()) {
791 ciCallTypeData* call_type_data = (ciCallTypeData*)pdata;
792 dump_replay_data_call_type_helper<ciCallTypeData>(out, round, count, call_type_data);
793 }
794 }
795 if (parameters != nullptr) {
796 for (int i = 0; i < parameters->number_of_parameters(); i++) {
797 dump_replay_data_type_helper(out, round, count, parameters, ParametersTypeData::type_offset(i), parameters->valid_parameter_type(i));
798 }
799 }
800 }
801 for (int count = 0, round = 0; round < 2; round++) {
802 if (round == 1) out->print(" methods %d", count);
803 dump_replay_data_extra_data_helper(out, round, count);
804 }
805 out->cr();
806 }
807
808 #ifndef PRODUCT
809 void ciMethodData::print() {
810 print_data_on(tty);
811 }
812
813 void ciMethodData::print_data_on(outputStream* st) {
814 ResourceMark rm;
815 ciParametersTypeData* parameters = parameters_type_data();
816 if (parameters != nullptr) {
817 parameters->print_data_on(st);
818 }
819 ciProfileData* data;
820 for (data = first_data(); is_valid(data); data = next_data(data)) {
821 st->print("%d", dp_to_di(data->dp()));
822 st->fill_to(6);
823 data->print_data_on(st);
824 }
825 st->print_cr("--- Extra data:");
826 DataLayout* dp = extra_data_base();
827 DataLayout* end = args_data_limit();
828 for (;; dp = MethodData::next_extra(dp)) {
829 assert(dp < end, "moved past end of extra data");
830 switch (dp->tag()) {
831 case DataLayout::no_tag:
832 continue;
833 case DataLayout::bit_data_tag:
834 data = new BitData(dp);
835 break;
836 case DataLayout::arg_info_data_tag:
837 data = new ciArgInfoData(dp);
838 dp = end; // ArgInfoData is after the trap data right before the parameter data.
839 break;
840 case DataLayout::speculative_trap_data_tag:
841 data = new ciSpeculativeTrapData(dp);
842 break;
843 default:
844 fatal("unexpected tag %d", dp->tag());
845 }
846 st->print("%d", dp_to_di(data->dp()));
847 st->fill_to(6);
848 data->print_data_on(st);
849 if (dp >= end) return;
850 }
851 }
852
853 void ciTypeEntries::print_ciklass(outputStream* st, intptr_t k) {
854 if (TypeEntries::is_type_none(k)) {
855 st->print("none");
856 } else if (TypeEntries::is_type_unknown(k)) {
857 st->print("unknown");
858 } else {
859 valid_ciklass(k)->print_name_on(st);
860 }
861 if (TypeEntries::was_null_seen(k)) {
862 st->print(" (null seen)");
863 }
864 }
865
866 void ciTypeStackSlotEntries::print_data_on(outputStream* st) const {
867 for (int i = 0; i < number_of_entries(); i++) {
868 _pd->tab(st);
869 st->print("%d: stack (%u) ", i, stack_slot(i));
870 print_ciklass(st, type(i));
871 st->cr();
872 }
873 }
874
875 void ciReturnTypeEntry::print_data_on(outputStream* st) const {
876 _pd->tab(st);
877 st->print("ret ");
878 print_ciklass(st, type());
879 st->cr();
880 }
881
882 void ciCallTypeData::print_data_on(outputStream* st, const char* extra) const {
883 print_shared(st, "ciCallTypeData", extra);
884 if (has_arguments()) {
885 tab(st, true);
886 st->print_cr("argument types");
887 args()->print_data_on(st);
888 }
889 if (has_return()) {
890 tab(st, true);
891 st->print_cr("return type");
892 ret()->print_data_on(st);
893 }
894 }
895
896 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) const {
897 uint row;
898 int entries = 0;
899 for (row = 0; row < row_limit(); row++) {
900 if (receiver(row) != nullptr) entries++;
901 }
902 st->print_cr("count(%u) entries(%u)", count(), entries);
903 for (row = 0; row < row_limit(); row++) {
904 if (receiver(row) != nullptr) {
905 tab(st);
906 receiver(row)->print_name_on(st);
907 st->print_cr("(%u)", receiver_count(row));
908 }
909 }
910 }
911
912 void ciReceiverTypeData::print_data_on(outputStream* st, const char* extra) const {
913 print_shared(st, "ciReceiverTypeData", extra);
914 print_receiver_data_on(st);
915 }
916
917 void ciVirtualCallData::print_data_on(outputStream* st, const char* extra) const {
918 print_shared(st, "ciVirtualCallData", extra);
919 rtd_super()->print_receiver_data_on(st);
920 }
921
922 void ciVirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const {
923 print_shared(st, "ciVirtualCallTypeData", extra);
924 rtd_super()->print_receiver_data_on(st);
925 if (has_arguments()) {
926 tab(st, true);
927 st->print("argument types");
928 args()->print_data_on(st);
929 }
930 if (has_return()) {
931 tab(st, true);
932 st->print("return type");
933 ret()->print_data_on(st);
934 }
935 }
936
937 void ciParametersTypeData::print_data_on(outputStream* st, const char* extra) const {
938 st->print_cr("ciParametersTypeData");
939 parameters()->print_data_on(st);
940 }
941
942 void ciSpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const {
943 st->print_cr("ciSpeculativeTrapData");
944 tab(st);
945 method()->print_short_name(st);
946 st->cr();
947 }
948 #endif