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