1 /*
2 * Copyright (c) 2001, 2021, 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(NULL),
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(NULL) {}
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) == NULL) {
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 == NULL) {
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() != NULL) {
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 != NULL) {
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, NULL);
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 != NULL && !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*)NULL, k));
297 } else {
298 TypeStackSlotEntries::set_type(i, translate_klass(k));
299 }
300 }
301 }
302
303 void ciSingleTypeEntry::translate_type_data_from(const SingleTypeEntry* ret) {
304 intptr_t k = ret->type();
305 Klass* klass = (Klass*)klass_part(k);
306 if (klass != NULL && !klass->is_loader_alive()) {
307 // With concurrent class unloading, the MDO could have stale metadata; override it
308 set_type(SingleTypeEntry::with_status((Klass*)NULL, 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 NULL;
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 NULL;
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 case DataLayout::array_load_store_data_tag:
360 return new ciArrayLoadStoreData(data_layout);
361 case DataLayout::acmp_data_tag:
362 return new ciACmpData(data_layout);
363 };
364 }
365
366 // Iteration over data.
367 ciProfileData* ciMethodData::next_data(ciProfileData* current) {
368 int current_index = dp_to_di(current->dp());
369 int next_index = current_index + current->size_in_bytes();
370 ciProfileData* next = data_at(next_index);
371 return next;
372 }
373
374 DataLayout* ciMethodData::next_data_layout(DataLayout* current) {
375 int current_index = dp_to_di((address)current);
376 int next_index = current_index + current->size_in_bytes();
377 if (out_of_bounds(next_index)) {
378 return NULL;
379 }
380 DataLayout* next = data_layout_at(next_index);
381 return next;
382 }
383
384 ciProfileData* ciMethodData::bci_to_extra_data(int bci, ciMethod* m, bool& two_free_slots) {
385 DataLayout* dp = extra_data_base();
386 DataLayout* end = args_data_limit();
387 two_free_slots = false;
388 for (;dp < end; dp = MethodData::next_extra(dp)) {
389 switch(dp->tag()) {
390 case DataLayout::no_tag:
391 _saw_free_extra_data = true; // observed an empty slot (common case)
392 two_free_slots = (MethodData::next_extra(dp)->tag() == DataLayout::no_tag);
393 return NULL;
394 case DataLayout::arg_info_data_tag:
395 return NULL; // ArgInfoData is after the trap data right before the parameter data.
396 case DataLayout::bit_data_tag:
397 if (m == NULL && dp->bci() == bci) {
398 return new ciBitData(dp);
399 }
400 break;
401 case DataLayout::speculative_trap_data_tag: {
402 ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
403 // data->method() might be null if the MDO is snapshotted
404 // concurrently with a trap
405 if (m != NULL && data->method() == m && dp->bci() == bci) {
406 return data;
407 }
408 break;
409 }
410 default:
411 fatal("bad tag = %d", dp->tag());
412 }
413 }
414 return NULL;
415 }
416
417 // Translate a bci to its corresponding data, or NULL.
418 ciProfileData* ciMethodData::bci_to_data(int bci, ciMethod* m) {
419 // If m is not NULL we look for a SpeculativeTrapData entry
420 if (m == NULL) {
421 DataLayout* data_layout = data_layout_before(bci);
422 for ( ; is_valid(data_layout); data_layout = next_data_layout(data_layout)) {
423 if (data_layout->bci() == bci) {
424 set_hint_di(dp_to_di((address)data_layout));
425 return data_from(data_layout);
426 } else if (data_layout->bci() > bci) {
427 break;
428 }
429 }
430 }
431 bool two_free_slots = false;
432 ciProfileData* result = bci_to_extra_data(bci, m, two_free_slots);
433 if (result != NULL) {
434 return result;
435 }
436 if (m != NULL && !two_free_slots) {
437 // We were looking for a SpeculativeTrapData entry we didn't
438 // find. Room is not available for more SpeculativeTrapData
439 // entries, look in the non SpeculativeTrapData entries.
440 return bci_to_data(bci, NULL);
441 }
442 return NULL;
443 }
444
445 // Conservatively decode the trap_state of a ciProfileData.
446 int ciMethodData::has_trap_at(ciProfileData* data, int reason) {
447 typedef Deoptimization::DeoptReason DR_t;
448 int per_bc_reason
449 = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason);
450 if (trap_count(reason) == 0) {
451 // Impossible for this trap to have occurred, regardless of trap_state.
452 // Note: This happens if the MDO is empty.
453 return 0;
454 } else if (per_bc_reason == Deoptimization::Reason_none) {
455 // We cannot conclude anything; a trap happened somewhere, maybe here.
456 return -1;
457 } else if (data == NULL) {
458 // No profile here, not even an extra_data record allocated on the fly.
459 // If there are empty extra_data records, and there had been a trap,
460 // there would have been a non-null data pointer. If there are no
461 // free extra_data records, we must return a conservative -1.
462 if (_saw_free_extra_data)
463 return 0; // Q.E.D.
464 else
465 return -1; // bail with a conservative answer
466 } else {
467 return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason);
468 }
469 }
470
471 int ciMethodData::trap_recompiled_at(ciProfileData* data) {
472 if (data == NULL) {
473 return (_saw_free_extra_data? 0: -1); // (see previous method)
474 } else {
475 return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0;
476 }
477 }
478
479 void ciMethodData::clear_escape_info() {
480 VM_ENTRY_MARK;
481 MethodData* mdo = get_MethodData();
482 if (mdo != NULL) {
483 mdo->clear_escape_info();
484 ArgInfoData *aid = arg_info();
485 int arg_count = (aid == NULL) ? 0 : aid->number_of_args();
486 for (int i = 0; i < arg_count; i++) {
487 set_arg_modified(i, 0);
488 }
489 }
490 _eflags = _arg_local = _arg_stack = _arg_returned = 0;
491 }
492
493 // copy our escape info to the MethodData* if it exists
494 void ciMethodData::update_escape_info() {
495 VM_ENTRY_MARK;
496 MethodData* mdo = get_MethodData();
497 if ( mdo != NULL) {
498 mdo->set_eflags(_eflags);
499 mdo->set_arg_local(_arg_local);
500 mdo->set_arg_stack(_arg_stack);
501 mdo->set_arg_returned(_arg_returned);
502 int arg_count = mdo->method()->size_of_parameters();
503 for (int i = 0; i < arg_count; i++) {
504 mdo->set_arg_modified(i, arg_modified(i));
505 }
506 }
507 }
508
509 void ciMethodData::set_compilation_stats(short loops, short blocks) {
510 VM_ENTRY_MARK;
511 MethodData* mdo = get_MethodData();
512 if (mdo != NULL) {
513 mdo->set_num_loops(loops);
514 mdo->set_num_blocks(blocks);
515 }
516 }
517
518 void ciMethodData::set_would_profile(bool p) {
519 VM_ENTRY_MARK;
520 MethodData* mdo = get_MethodData();
521 if (mdo != NULL) {
522 mdo->set_would_profile(p);
523 }
524 }
525
526 void ciMethodData::set_argument_type(int bci, int i, ciKlass* k) {
527 VM_ENTRY_MARK;
528 MethodData* mdo = get_MethodData();
529 if (mdo != NULL) {
530 ProfileData* data = mdo->bci_to_data(bci);
531 if (data != NULL) {
532 if (data->is_CallTypeData()) {
533 data->as_CallTypeData()->set_argument_type(i, k->get_Klass());
534 } else {
535 assert(data->is_VirtualCallTypeData(), "no arguments!");
536 data->as_VirtualCallTypeData()->set_argument_type(i, k->get_Klass());
537 }
538 }
539 }
540 }
541
542 void ciMethodData::set_parameter_type(int i, ciKlass* k) {
543 VM_ENTRY_MARK;
544 MethodData* mdo = get_MethodData();
545 if (mdo != NULL) {
546 mdo->parameters_type_data()->set_type(i, k->get_Klass());
547 }
548 }
549
550 void ciMethodData::set_return_type(int bci, ciKlass* k) {
551 VM_ENTRY_MARK;
552 MethodData* mdo = get_MethodData();
553 if (mdo != NULL) {
554 ProfileData* data = mdo->bci_to_data(bci);
555 if (data != NULL) {
556 if (data->is_CallTypeData()) {
557 data->as_CallTypeData()->set_return_type(k->get_Klass());
558 } else {
559 assert(data->is_VirtualCallTypeData(), "no arguments!");
560 data->as_VirtualCallTypeData()->set_return_type(k->get_Klass());
561 }
562 }
563 }
564 }
565
566 bool ciMethodData::has_escape_info() {
567 return eflag_set(MethodData::estimated);
568 }
569
570 void ciMethodData::set_eflag(MethodData::EscapeFlag f) {
571 set_bits(_eflags, f);
572 }
573
574 bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const {
575 return mask_bits(_eflags, f) != 0;
576 }
577
578 void ciMethodData::set_arg_local(int i) {
579 set_nth_bit(_arg_local, i);
580 }
581
582 void ciMethodData::set_arg_stack(int i) {
583 set_nth_bit(_arg_stack, i);
584 }
585
586 void ciMethodData::set_arg_returned(int i) {
587 set_nth_bit(_arg_returned, i);
588 }
589
590 void ciMethodData::set_arg_modified(int arg, uint val) {
591 ArgInfoData *aid = arg_info();
592 if (aid == NULL)
593 return;
594 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
595 aid->set_arg_modified(arg, val);
596 }
597
598 bool ciMethodData::is_arg_local(int i) const {
599 return is_set_nth_bit(_arg_local, i);
600 }
601
602 bool ciMethodData::is_arg_stack(int i) const {
603 return is_set_nth_bit(_arg_stack, i);
604 }
605
606 bool ciMethodData::is_arg_returned(int i) const {
607 return is_set_nth_bit(_arg_returned, i);
608 }
609
610 uint ciMethodData::arg_modified(int arg) const {
611 ArgInfoData *aid = arg_info();
612 if (aid == NULL)
613 return 0;
614 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
615 return aid->arg_modified(arg);
616 }
617
618 ciParametersTypeData* ciMethodData::parameters_type_data() const {
619 return _parameters != NULL ? new ciParametersTypeData(_parameters) : NULL;
620 }
621
622 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) {
623 // Get offset within MethodData* of the data array
624 ByteSize data_offset = MethodData::data_offset();
625
626 // Get cell offset of the ProfileData within data array
627 int cell_offset = dp_to_di(data->dp());
628
629 // Add in counter_offset, the # of bytes into the ProfileData of counter or flag
630 int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data);
631
632 return in_ByteSize(offset);
633 }
634
635 ciArgInfoData *ciMethodData::arg_info() const {
636 // Should be last, have to skip all traps.
637 DataLayout* dp = extra_data_base();
638 DataLayout* end = args_data_limit();
639 for (; dp < end; dp = MethodData::next_extra(dp)) {
640 if (dp->tag() == DataLayout::arg_info_data_tag)
641 return new ciArgInfoData(dp);
642 }
643 return NULL;
644 }
645
646
647 // Implementation of the print method.
648 void ciMethodData::print_impl(outputStream* st) {
649 ciMetadata::print_impl(st);
650 }
651
652 void ciMethodData::dump_replay_data_type_helper(outputStream* out, int round, int& count, ProfileData* pdata, ByteSize offset, ciKlass* k) {
653 if (k != NULL) {
654 if (round == 0) {
655 count++;
656 } else {
657 out->print(" %d %s", (int)(dp_to_di(pdata->dp() + in_bytes(offset)) / sizeof(intptr_t)),
658 CURRENT_ENV->replay_name(k));
659 }
660 }
661 }
662
663 template<class T> void ciMethodData::dump_replay_data_receiver_type_helper(outputStream* out, int round, int& count, T* vdata) {
664 for (uint i = 0; i < vdata->row_limit(); i++) {
665 dump_replay_data_type_helper(out, round, count, vdata, vdata->receiver_offset(i), vdata->receiver(i));
666 }
667 }
668
669 template<class T> void ciMethodData::dump_replay_data_call_type_helper(outputStream* out, int round, int& count, T* call_type_data) {
670 if (call_type_data->has_arguments()) {
671 for (int i = 0; i < call_type_data->number_of_arguments(); i++) {
672 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));
673 }
674 }
675 if (call_type_data->has_return()) {
676 dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->return_type_offset(), call_type_data->valid_return_type());
677 }
678 }
679
680 void ciMethodData::dump_replay_data_extra_data_helper(outputStream* out, int round, int& count) {
681 DataLayout* dp = extra_data_base();
682 DataLayout* end = args_data_limit();
683
684 for (;dp < end; dp = MethodData::next_extra(dp)) {
685 switch(dp->tag()) {
686 case DataLayout::no_tag:
687 case DataLayout::arg_info_data_tag:
688 return;
689 case DataLayout::bit_data_tag:
690 break;
691 case DataLayout::speculative_trap_data_tag: {
692 ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
693 ciMethod* m = data->method();
694 if (m != NULL) {
695 if (round == 0) {
696 count++;
697 } else {
698 out->print(" %d ", (int)(dp_to_di(((address)dp) + in_bytes(ciSpeculativeTrapData::method_offset())) / sizeof(intptr_t)));
699 m->dump_name_as_ascii(out);
700 }
701 }
702 break;
703 }
704 default:
705 fatal("bad tag = %d", dp->tag());
706 }
707 }
708 }
709
710 void ciMethodData::dump_replay_data(outputStream* out) {
711 ResourceMark rm;
712 MethodData* mdo = get_MethodData();
713 Method* method = mdo->method();
714 out->print("ciMethodData ");
715 ciMethod::dump_name_as_ascii(out, method);
716 out->print(" %d %d", _state, _invocation_counter);
717
718 // dump the contents of the MDO header as raw data
719 unsigned char* orig = (unsigned char*)&_orig;
720 int length = sizeof(_orig);
721 out->print(" orig %d", length);
722 for (int i = 0; i < length; i++) {
723 out->print(" %d", orig[i]);
724 }
725
726 // dump the MDO data as raw data
727 int elements = (data_size() + extra_data_size()) / sizeof(intptr_t);
728 out->print(" data %d", elements);
729 for (int i = 0; i < elements; i++) {
730 // We could use INTPTR_FORMAT here but that's zero justified
731 // which makes comparing it with the SA version of this output
732 // harder. data()'s element type is intptr_t.
733 out->print(" " INTX_FORMAT_X, data()[i]);
734 }
735
736 // The MDO contained oop references as ciObjects, so scan for those
737 // and emit pairs of offset and klass name so that they can be
738 // reconstructed at runtime. The first round counts the number of
739 // oop references and the second actually emits them.
740 ciParametersTypeData* parameters = parameters_type_data();
741 for (int count = 0, round = 0; round < 2; round++) {
742 if (round == 1) out->print(" oops %d", count);
743 ProfileData* pdata = first_data();
744 for ( ; is_valid(pdata); pdata = next_data(pdata)) {
745 if (pdata->is_VirtualCallData()) {
746 ciVirtualCallData* vdata = (ciVirtualCallData*)pdata;
747 dump_replay_data_receiver_type_helper<ciVirtualCallData>(out, round, count, vdata);
748 if (pdata->is_VirtualCallTypeData()) {
749 ciVirtualCallTypeData* call_type_data = (ciVirtualCallTypeData*)pdata;
750 dump_replay_data_call_type_helper<ciVirtualCallTypeData>(out, round, count, call_type_data);
751 }
752 } else if (pdata->is_ReceiverTypeData()) {
753 ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata;
754 dump_replay_data_receiver_type_helper<ciReceiverTypeData>(out, round, count, vdata);
755 } else if (pdata->is_CallTypeData()) {
756 ciCallTypeData* call_type_data = (ciCallTypeData*)pdata;
757 dump_replay_data_call_type_helper<ciCallTypeData>(out, round, count, call_type_data);
758 } else if (pdata->is_ArrayLoadStoreData()) {
759 ciArrayLoadStoreData* array_load_store_data = (ciArrayLoadStoreData*)pdata;
760 dump_replay_data_type_helper(out, round, count, array_load_store_data, ciArrayLoadStoreData::array_offset(),
761 array_load_store_data->array()->valid_type());
762 dump_replay_data_type_helper(out, round, count, array_load_store_data, ciArrayLoadStoreData::element_offset(),
763 array_load_store_data->element()->valid_type());
764 } else if (pdata->is_ACmpData()) {
765 ciACmpData* acmp_data = (ciACmpData*)pdata;
766 dump_replay_data_type_helper(out, round, count, acmp_data, ciACmpData::left_offset(),
767 acmp_data->left()->valid_type());
768 dump_replay_data_type_helper(out, round, count, acmp_data, ciACmpData::right_offset(),
769 acmp_data->right()->valid_type());
770
771 }
772 }
773 if (parameters != NULL) {
774 for (int i = 0; i < parameters->number_of_parameters(); i++) {
775 dump_replay_data_type_helper(out, round, count, parameters, ParametersTypeData::type_offset(i), parameters->valid_parameter_type(i));
776 }
777 }
778 }
779 for (int count = 0, round = 0; round < 2; round++) {
780 if (round == 1) out->print(" methods %d", count);
781 dump_replay_data_extra_data_helper(out, round, count);
782 }
783 out->cr();
784 }
785
786 #ifndef PRODUCT
787 void ciMethodData::print() {
788 print_data_on(tty);
789 }
790
791 void ciMethodData::print_data_on(outputStream* st) {
792 ResourceMark rm;
793 ciParametersTypeData* parameters = parameters_type_data();
794 if (parameters != NULL) {
795 parameters->print_data_on(st);
796 }
797 ciProfileData* data;
798 for (data = first_data(); is_valid(data); data = next_data(data)) {
799 st->print("%d", dp_to_di(data->dp()));
800 st->fill_to(6);
801 data->print_data_on(st);
802 }
803 st->print_cr("--- Extra data:");
804 DataLayout* dp = extra_data_base();
805 DataLayout* end = args_data_limit();
806 for (;; dp = MethodData::next_extra(dp)) {
807 assert(dp < end, "moved past end of extra data");
808 switch (dp->tag()) {
809 case DataLayout::no_tag:
810 continue;
811 case DataLayout::bit_data_tag:
812 data = new BitData(dp);
813 break;
814 case DataLayout::arg_info_data_tag:
815 data = new ciArgInfoData(dp);
816 dp = end; // ArgInfoData is after the trap data right before the parameter data.
817 break;
818 case DataLayout::speculative_trap_data_tag:
819 data = new ciSpeculativeTrapData(dp);
820 break;
821 default:
822 fatal("unexpected tag %d", dp->tag());
823 }
824 st->print("%d", dp_to_di(data->dp()));
825 st->fill_to(6);
826 data->print_data_on(st);
827 if (dp >= end) return;
828 }
829 }
830
831 void ciTypeEntries::print_ciklass(outputStream* st, intptr_t k) {
832 if (TypeEntries::is_type_none(k)) {
833 st->print("none");
834 } else if (TypeEntries::is_type_unknown(k)) {
835 st->print("unknown");
836 } else {
837 valid_ciklass(k)->print_name_on(st);
838 }
839 if (TypeEntries::was_null_seen(k)) {
840 st->print(" (null seen)");
841 }
842 }
843
844 void ciTypeStackSlotEntries::print_data_on(outputStream* st) const {
845 for (int i = 0; i < number_of_entries(); i++) {
846 _pd->tab(st);
847 st->print("%d: stack (%u) ", i, stack_slot(i));
848 print_ciklass(st, type(i));
849 st->cr();
850 }
851 }
852
853 void ciSingleTypeEntry::print_data_on(outputStream* st) const {
854 _pd->tab(st);
855 st->print("ret ");
856 print_ciklass(st, type());
857 st->cr();
858 }
859
860 void ciCallTypeData::print_data_on(outputStream* st, const char* extra) const {
861 print_shared(st, "ciCallTypeData", extra);
862 if (has_arguments()) {
863 tab(st, true);
864 st->print_cr("argument types");
865 args()->print_data_on(st);
866 }
867 if (has_return()) {
868 tab(st, true);
869 st->print_cr("return type");
870 ret()->print_data_on(st);
871 }
872 }
873
874 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) const {
875 uint row;
876 int entries = 0;
877 for (row = 0; row < row_limit(); row++) {
878 if (receiver(row) != NULL) entries++;
879 }
880 st->print_cr("count(%u) entries(%u)", count(), entries);
881 for (row = 0; row < row_limit(); row++) {
882 if (receiver(row) != NULL) {
883 tab(st);
884 receiver(row)->print_name_on(st);
885 st->print_cr("(%u)", receiver_count(row));
886 }
887 }
888 }
889
890 void ciReceiverTypeData::print_data_on(outputStream* st, const char* extra) const {
891 print_shared(st, "ciReceiverTypeData", extra);
892 print_receiver_data_on(st);
893 }
894
895 void ciVirtualCallData::print_data_on(outputStream* st, const char* extra) const {
896 print_shared(st, "ciVirtualCallData", extra);
897 rtd_super()->print_receiver_data_on(st);
898 }
899
900 void ciVirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const {
901 print_shared(st, "ciVirtualCallTypeData", extra);
902 rtd_super()->print_receiver_data_on(st);
903 if (has_arguments()) {
904 tab(st, true);
905 st->print("argument types");
906 args()->print_data_on(st);
907 }
908 if (has_return()) {
909 tab(st, true);
910 st->print("return type");
911 ret()->print_data_on(st);
912 }
913 }
914
915 void ciParametersTypeData::print_data_on(outputStream* st, const char* extra) const {
916 st->print_cr("ciParametersTypeData");
917 parameters()->print_data_on(st);
918 }
919
920 void ciSpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const {
921 st->print_cr("ciSpeculativeTrapData");
922 tab(st);
923 method()->print_short_name(st);
924 st->cr();
925 }
926
927 void ciArrayLoadStoreData::print_data_on(outputStream* st, const char* extra) const {
928 print_shared(st, "ciArrayLoadStoreData", extra);
929 tab(st, true);
930 st->print("array");
931 array()->print_data_on(st);
932 tab(st, true);
933 st->print("element");
934 element()->print_data_on(st);
935 }
936
937 void ciACmpData::print_data_on(outputStream* st, const char* extra) const {
938 BranchData::print_data_on(st, extra);
939 st->cr();
940 tab(st, true);
941 st->print("left");
942 left()->print_data_on(st);
943 tab(st, true);
944 st->print("right");
945 right()->print_data_on(st);
946 }
947 #endif