39 //
40 // Overlay for generic profiling data.
41
42 // Some types of data layouts need a length field.
43 bool DataLayout::needs_array_len(u1 tag) {
44 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag);
45 }
46
47 // Perform generic initialization of the data. More specific
48 // initialization occurs in overrides of ProfileData::post_initialize.
49 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) {
50 _header._bits = (intptr_t)0;
51 _header._struct._tag = tag;
52 _header._struct._bci = bci;
53 for (int i = 0; i < cell_count; i++) {
54 set_cell_at(i, (intptr_t)0);
55 }
56 if (needs_array_len(tag)) {
57 set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header.
58 }
59 }
60
61 void DataLayout::clean_weak_klass_links(BoolObjectClosure* cl) {
62 ResourceMark m;
63 data_in()->clean_weak_klass_links(cl);
64 }
65
66
67 // ==================================================================
68 // ProfileData
69 //
70 // A ProfileData object is created to refer to a section of profiling
71 // data in a structured way.
72
73 // Constructor for invalid ProfileData.
74 ProfileData::ProfileData() {
75 _data = NULL;
76 }
77
78 #ifndef PRODUCT
79 void ProfileData::print_shared(outputStream* st, const char* name) {
80 st->print("bci: %d", bci());
81 st->fill_to(tab_width_one);
82 st->print("%s", name);
83 tab(st);
84 int trap = trap_state();
85 if (trap != 0) {
86 char buf[100];
87 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap));
88 }
89 int flags = data()->flags();
90 if (flags != 0)
91 st->print("flags(%d) ", flags);
92 }
93
94 void ProfileData::tab(outputStream* st) {
95 st->fill_to(tab_width_two);
96 }
97 #endif // !PRODUCT
98
99 // ==================================================================
100 // BitData
101 //
102 // A BitData corresponds to a one-bit flag. This is used to indicate
103 // whether a checkcast bytecode has seen a null value.
104
105
106 #ifndef PRODUCT
107 void BitData::print_data_on(outputStream* st) {
108 print_shared(st, "BitData");
109 }
110 #endif // !PRODUCT
111
112 // ==================================================================
113 // CounterData
114 //
115 // A CounterData corresponds to a simple counter.
116
117 #ifndef PRODUCT
118 void CounterData::print_data_on(outputStream* st) {
119 print_shared(st, "CounterData");
120 st->print_cr("count(%u)", count());
121 }
122 #endif // !PRODUCT
123
124 // ==================================================================
125 // JumpData
126 //
127 // A JumpData is used to access profiling information for a direct
128 // branch. It is a counter, used for counting the number of branches,
129 // plus a data displacement, used for realigning the data pointer to
130 // the corresponding target bci.
131
132 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) {
133 assert(stream->bci() == bci(), "wrong pos");
134 int target;
135 Bytecodes::Code c = stream->code();
136 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) {
137 target = stream->dest_w();
138 } else {
139 target = stream->dest();
140 }
141 int my_di = mdo->dp_to_di(dp());
142 int target_di = mdo->bci_to_di(target);
143 int offset = target_di - my_di;
144 set_displacement(offset);
145 }
146
147 #ifndef PRODUCT
148 void JumpData::print_data_on(outputStream* st) {
149 print_shared(st, "JumpData");
150 st->print_cr("taken(%u) displacement(%d)", taken(), displacement());
151 }
152 #endif // !PRODUCT
153
154 // ==================================================================
155 // ReceiverTypeData
156 //
157 // A ReceiverTypeData is used to access profiling information about a
158 // dynamic type check. It consists of a counter which counts the total times
159 // that the check is reached, and a series of (Klass*, count) pairs
160 // which are used to store a type profile for the receiver of the check.
161
162 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) {
163 for (uint row = 0; row < row_limit(); row++) {
164 Klass* p = receiver(row);
165 if (p != NULL && !p->is_loader_alive(is_alive_cl)) {
166 clear_row(row);
167 }
168 }
169 }
170
171 #ifndef PRODUCT
172 void ReceiverTypeData::print_receiver_data_on(outputStream* st) {
173 uint row;
174 int entries = 0;
175 for (row = 0; row < row_limit(); row++) {
176 if (receiver(row) != NULL) entries++;
177 }
178 st->print_cr("count(%u) entries(%u)", count(), entries);
179 int total = count();
180 for (row = 0; row < row_limit(); row++) {
181 if (receiver(row) != NULL) {
182 total += receiver_count(row);
183 }
184 }
185 for (row = 0; row < row_limit(); row++) {
186 if (receiver(row) != NULL) {
187 tab(st);
188 receiver(row)->print_value_on(st);
189 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total);
190 }
191 }
192 }
193 void ReceiverTypeData::print_data_on(outputStream* st) {
194 print_shared(st, "ReceiverTypeData");
195 print_receiver_data_on(st);
196 }
197 void VirtualCallData::print_data_on(outputStream* st) {
198 print_shared(st, "VirtualCallData");
199 print_receiver_data_on(st);
200 }
201 #endif // !PRODUCT
202
203 // ==================================================================
204 // RetData
205 //
206 // A RetData is used to access profiling information for a ret bytecode.
207 // It is composed of a count of the number of times that the ret has
208 // been executed, followed by a series of triples of the form
209 // (bci, count, di) which count the number of times that some bci was the
210 // target of the ret and cache a corresponding displacement.
211
212 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) {
213 for (uint row = 0; row < row_limit(); row++) {
214 set_bci_displacement(row, -1);
215 set_bci(row, no_bci);
216 }
217 // release so other threads see a consistent state. bci is used as
229 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) {
230 // First find the mdp which corresponds to the return bci.
231 address mdp = h_mdo->bci_to_dp(return_bci);
232
233 // Now check to see if any of the cache slots are open.
234 for (uint row = 0; row < row_limit(); row++) {
235 if (bci(row) == no_bci) {
236 set_bci_displacement(row, mdp - dp());
237 set_bci_count(row, DataLayout::counter_increment);
238 // Barrier to ensure displacement is written before the bci; allows
239 // the interpreter to read displacement without fear of race condition.
240 release_set_bci(row, return_bci);
241 break;
242 }
243 }
244 return mdp;
245 }
246
247
248 #ifndef PRODUCT
249 void RetData::print_data_on(outputStream* st) {
250 print_shared(st, "RetData");
251 uint row;
252 int entries = 0;
253 for (row = 0; row < row_limit(); row++) {
254 if (bci(row) != no_bci) entries++;
255 }
256 st->print_cr("count(%u) entries(%u)", count(), entries);
257 for (row = 0; row < row_limit(); row++) {
258 if (bci(row) != no_bci) {
259 tab(st);
260 st->print_cr("bci(%d: count(%u) displacement(%d))",
261 bci(row), bci_count(row), bci_displacement(row));
262 }
263 }
264 }
265 #endif // !PRODUCT
266
267 // ==================================================================
268 // BranchData
269 //
270 // A BranchData is used to access profiling data for a two-way branch.
271 // It consists of taken and not_taken counts as well as a data displacement
272 // for the taken case.
273
274 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) {
275 assert(stream->bci() == bci(), "wrong pos");
276 int target = stream->dest();
277 int my_di = mdo->dp_to_di(dp());
278 int target_di = mdo->bci_to_di(target);
279 int offset = target_di - my_di;
280 set_displacement(offset);
281 }
282
283 #ifndef PRODUCT
284 void BranchData::print_data_on(outputStream* st) {
285 print_shared(st, "BranchData");
286 st->print_cr("taken(%u) displacement(%d)",
287 taken(), displacement());
288 tab(st);
289 st->print_cr("not taken(%u)", not_taken());
290 }
291 #endif
292
293 // ==================================================================
294 // MultiBranchData
295 //
296 // A MultiBranchData is used to access profiling information for
297 // a multi-way branch (*switch bytecodes). It consists of a series
298 // of (count, displacement) pairs, which count the number of times each
299 // case was taken and specify the data displacment for each branch target.
300
301 int MultiBranchData::compute_cell_count(BytecodeStream* stream) {
302 int cell_count = 0;
303 if (stream->code() == Bytecodes::_tableswitch) {
304 Bytecode_tableswitch sw(stream->method()(), stream->bcp());
338 Bytecode_lookupswitch sw(stream->method()(), stream->bcp());
339 int npairs = sw.number_of_pairs();
340 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len");
341 for (int count = 0; count < npairs; count++) {
342 LookupswitchPair pair = sw.pair_at(count);
343 target = pair.offset() + bci();
344 my_di = mdo->dp_to_di(dp());
345 target_di = mdo->bci_to_di(target);
346 offset = target_di - my_di;
347 set_displacement_at(count, offset);
348 }
349 target = sw.default_offset() + bci();
350 my_di = mdo->dp_to_di(dp());
351 target_di = mdo->bci_to_di(target);
352 offset = target_di - my_di;
353 set_default_displacement(offset);
354 }
355 }
356
357 #ifndef PRODUCT
358 void MultiBranchData::print_data_on(outputStream* st) {
359 print_shared(st, "MultiBranchData");
360 st->print_cr("default_count(%u) displacement(%d)",
361 default_count(), default_displacement());
362 int cases = number_of_cases();
363 for (int i = 0; i < cases; i++) {
364 tab(st);
365 st->print_cr("count(%u) displacement(%d)",
366 count_at(i), displacement_at(i));
367 }
368 }
369 #endif
370
371 #ifndef PRODUCT
372 void ArgInfoData::print_data_on(outputStream* st) {
373 print_shared(st, "ArgInfoData");
374 int nargs = number_of_args();
375 for (int i = 0; i < nargs; i++) {
376 st->print(" 0x%x", arg_modified(i));
377 }
378 st->cr();
379 }
380
381 #endif
382 // ==================================================================
383 // MethodData*
384 //
385 // A MethodData* holds information which has been collected about
386 // a method.
387
388 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) {
389 int size = MethodData::compute_allocation_size_in_words(method);
390
391 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD)
392 MethodData(method(), size, CHECK_NULL);
393 }
394
395 int MethodData::bytecode_cell_count(Bytecodes::Code code) {
396 #if defined(COMPILER1) && !defined(COMPILER2)
397 return no_profile_data;
398 #else
399 switch (code) {
400 case Bytecodes::_checkcast:
401 case Bytecodes::_instanceof:
402 case Bytecodes::_aastore:
403 if (TypeProfileCasts) {
404 return ReceiverTypeData::static_cell_count();
405 } else {
406 return BitData::static_cell_count();
407 }
408 case Bytecodes::_invokespecial:
409 case Bytecodes::_invokestatic:
410 return CounterData::static_cell_count();
411 case Bytecodes::_goto:
412 case Bytecodes::_goto_w:
413 case Bytecodes::_jsr:
414 case Bytecodes::_jsr_w:
415 return JumpData::static_cell_count();
416 case Bytecodes::_invokevirtual:
417 case Bytecodes::_invokeinterface:
418 return VirtualCallData::static_cell_count();
419 case Bytecodes::_invokedynamic:
420 return CounterData::static_cell_count();
421 case Bytecodes::_ret:
422 return RetData::static_cell_count();
423 case Bytecodes::_ifeq:
424 case Bytecodes::_ifne:
425 case Bytecodes::_iflt:
426 case Bytecodes::_ifge:
427 case Bytecodes::_ifgt:
428 case Bytecodes::_ifle:
429 case Bytecodes::_if_icmpeq:
430 case Bytecodes::_if_icmpne:
431 case Bytecodes::_if_icmplt:
432 case Bytecodes::_if_icmpge:
433 case Bytecodes::_if_icmpgt:
434 case Bytecodes::_if_icmple:
435 case Bytecodes::_if_acmpeq:
436 case Bytecodes::_if_acmpne:
437 case Bytecodes::_ifnull:
438 case Bytecodes::_ifnonnull:
439 return BranchData::static_cell_count();
440 case Bytecodes::_lookupswitch:
441 case Bytecodes::_tableswitch:
442 return variable_cell_count;
443 }
444 return no_profile_data;
445 #endif
446 }
447
448 // Compute the size of the profiling information corresponding to
449 // the current bytecode.
450 int MethodData::compute_data_size(BytecodeStream* stream) {
451 int cell_count = bytecode_cell_count(stream->code());
452 if (cell_count == no_profile_data) {
453 return 0;
454 }
455 if (cell_count == variable_cell_count) {
456 cell_count = MultiBranchData::compute_cell_count(stream);
457 }
458 // Note: cell_count might be zero, meaning that there is just
459 // a DataLayout header, with no extra cells.
460 assert(cell_count >= 0, "sanity");
461 return DataLayout::compute_size_in_bytes(cell_count);
462 }
463
464 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) {
465 if (ProfileTraps) {
466 // Assume that up to 3% of BCIs with no MDP will need to allocate one.
467 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1;
468 // If the method is large, let the extra BCIs grow numerous (to ~1%).
469 int one_percent_of_data
470 = (uint)data_size / (DataLayout::header_size_in_bytes()*128);
471 if (extra_data_count < one_percent_of_data)
472 extra_data_count = one_percent_of_data;
473 if (extra_data_count > empty_bc_count)
474 extra_data_count = empty_bc_count; // no need for more
475 return extra_data_count;
476 } else {
482 // profiling information about a given method. Size is in bytes.
483 int MethodData::compute_allocation_size_in_bytes(methodHandle method) {
484 int data_size = 0;
485 BytecodeStream stream(method);
486 Bytecodes::Code c;
487 int empty_bc_count = 0; // number of bytecodes lacking data
488 while ((c = stream.next()) >= 0) {
489 int size_in_bytes = compute_data_size(&stream);
490 data_size += size_in_bytes;
491 if (size_in_bytes == 0) empty_bc_count += 1;
492 }
493 int object_size = in_bytes(data_offset()) + data_size;
494
495 // Add some extra DataLayout cells (at least one) to track stray traps.
496 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count);
497 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0);
498
499 // Add a cell to record information about modified arguments.
500 int arg_size = method->size_of_parameters();
501 object_size += DataLayout::compute_size_in_bytes(arg_size+1);
502 return object_size;
503 }
504
505 // Compute the size of the MethodData* necessary to store
506 // profiling information about a given method. Size is in words
507 int MethodData::compute_allocation_size_in_words(methodHandle method) {
508 int byte_size = compute_allocation_size_in_bytes(method);
509 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord;
510 return align_object_size(word_size);
511 }
512
513 // Initialize an individual data segment. Returns the size of
514 // the segment in bytes.
515 int MethodData::initialize_data(BytecodeStream* stream,
516 int data_index) {
517 #if defined(COMPILER1) && !defined(COMPILER2)
518 return 0;
519 #else
520 int cell_count = -1;
521 int tag = DataLayout::no_tag;
522 DataLayout* data_layout = data_layout_at(data_index);
523 Bytecodes::Code c = stream->code();
524 switch (c) {
525 case Bytecodes::_checkcast:
526 case Bytecodes::_instanceof:
527 case Bytecodes::_aastore:
528 if (TypeProfileCasts) {
529 cell_count = ReceiverTypeData::static_cell_count();
530 tag = DataLayout::receiver_type_data_tag;
531 } else {
532 cell_count = BitData::static_cell_count();
533 tag = DataLayout::bit_data_tag;
534 }
535 break;
536 case Bytecodes::_invokespecial:
537 case Bytecodes::_invokestatic:
538 cell_count = CounterData::static_cell_count();
539 tag = DataLayout::counter_data_tag;
540 break;
541 case Bytecodes::_goto:
542 case Bytecodes::_goto_w:
543 case Bytecodes::_jsr:
544 case Bytecodes::_jsr_w:
545 cell_count = JumpData::static_cell_count();
546 tag = DataLayout::jump_data_tag;
547 break;
548 case Bytecodes::_invokevirtual:
549 case Bytecodes::_invokeinterface:
550 cell_count = VirtualCallData::static_cell_count();
551 tag = DataLayout::virtual_call_data_tag;
552 break;
553 case Bytecodes::_invokedynamic:
554 // %%% should make a type profile for any invokedynamic that takes a ref argument
555 cell_count = CounterData::static_cell_count();
556 tag = DataLayout::counter_data_tag;
557 break;
558 case Bytecodes::_ret:
559 cell_count = RetData::static_cell_count();
560 tag = DataLayout::ret_data_tag;
561 break;
562 case Bytecodes::_ifeq:
563 case Bytecodes::_ifne:
564 case Bytecodes::_iflt:
565 case Bytecodes::_ifge:
566 case Bytecodes::_ifgt:
567 case Bytecodes::_ifle:
568 case Bytecodes::_if_icmpeq:
569 case Bytecodes::_if_icmpne:
570 case Bytecodes::_if_icmplt:
571 case Bytecodes::_if_icmpge:
572 case Bytecodes::_if_icmpgt:
573 case Bytecodes::_if_icmple:
574 case Bytecodes::_if_acmpeq:
575 case Bytecodes::_if_acmpne:
576 case Bytecodes::_ifnull:
577 case Bytecodes::_ifnonnull:
578 cell_count = BranchData::static_cell_count();
579 tag = DataLayout::branch_data_tag;
580 break;
581 case Bytecodes::_lookupswitch:
582 case Bytecodes::_tableswitch:
583 cell_count = MultiBranchData::compute_cell_count(stream);
584 tag = DataLayout::multi_branch_data_tag;
585 break;
586 }
587 assert(tag == DataLayout::multi_branch_data_tag ||
588 cell_count == bytecode_cell_count(c), "cell counts must agree");
589 if (cell_count >= 0) {
590 assert(tag != DataLayout::no_tag, "bad tag");
591 assert(bytecode_has_profile(c), "agree w/ BHP");
592 data_layout->initialize(tag, stream->bci(), cell_count);
593 return DataLayout::compute_size_in_bytes(cell_count);
594 } else {
595 assert(!bytecode_has_profile(c), "agree w/ !BHP");
596 return 0;
597 }
598 #endif
599 }
600
601 // Get the data at an arbitrary (sort of) data index.
602 ProfileData* MethodData::data_at(int data_index) const {
603 if (out_of_bounds(data_index)) {
604 return NULL;
605 }
606 DataLayout* data_layout = data_layout_at(data_index);
607 return data_layout->data_in();
614 ShouldNotReachHere();
615 return NULL;
616 case DataLayout::bit_data_tag:
617 return new BitData(this);
618 case DataLayout::counter_data_tag:
619 return new CounterData(this);
620 case DataLayout::jump_data_tag:
621 return new JumpData(this);
622 case DataLayout::receiver_type_data_tag:
623 return new ReceiverTypeData(this);
624 case DataLayout::virtual_call_data_tag:
625 return new VirtualCallData(this);
626 case DataLayout::ret_data_tag:
627 return new RetData(this);
628 case DataLayout::branch_data_tag:
629 return new BranchData(this);
630 case DataLayout::multi_branch_data_tag:
631 return new MultiBranchData(this);
632 case DataLayout::arg_info_data_tag:
633 return new ArgInfoData(this);
634 };
635 }
636
637 // Iteration over data.
638 ProfileData* MethodData::next_data(ProfileData* current) const {
639 int current_index = dp_to_di(current->dp());
640 int next_index = current_index + current->size_in_bytes();
641 ProfileData* next = data_at(next_index);
642 return next;
643 }
644
645 // Give each of the data entries a chance to perform specific
646 // data initialization.
647 void MethodData::post_initialize(BytecodeStream* stream) {
648 ResourceMark rm;
649 ProfileData* data;
650 for (data = first_data(); is_valid(data); data = next_data(data)) {
651 stream->set_start(data->bci());
652 stream->next();
653 data->post_initialize(stream, this);
881 void MethodData::collect_statistics(KlassSizeStats *sz) const {
882 int n = sz->count(this);
883 sz->_method_data_bytes += n;
884 sz->_method_all_bytes += n;
885 sz->_rw_bytes += n;
886 }
887 #endif // INCLUDE_SERVICES
888
889 // Verification
890
891 void MethodData::verify_on(outputStream* st) {
892 guarantee(is_methodData(), "object must be method data");
893 // guarantee(m->is_perm(), "should be in permspace");
894 this->verify_data_on(st);
895 }
896
897 void MethodData::verify_data_on(outputStream* st) {
898 NEEDS_CLEANUP;
899 // not yet implemented.
900 }
|
39 //
40 // Overlay for generic profiling data.
41
42 // Some types of data layouts need a length field.
43 bool DataLayout::needs_array_len(u1 tag) {
44 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag);
45 }
46
47 // Perform generic initialization of the data. More specific
48 // initialization occurs in overrides of ProfileData::post_initialize.
49 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) {
50 _header._bits = (intptr_t)0;
51 _header._struct._tag = tag;
52 _header._struct._bci = bci;
53 for (int i = 0; i < cell_count; i++) {
54 set_cell_at(i, (intptr_t)0);
55 }
56 if (needs_array_len(tag)) {
57 set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header.
58 }
59 if (tag == call_type_data_tag) {
60 CallTypeData::initialize(this, cell_count);
61 } else if (tag == virtual_call_type_data_tag) {
62 VirtualCallTypeData::initialize(this, cell_count);
63 }
64 }
65
66 void DataLayout::clean_weak_klass_links(BoolObjectClosure* cl) {
67 ResourceMark m;
68 data_in()->clean_weak_klass_links(cl);
69 }
70
71
72 // ==================================================================
73 // ProfileData
74 //
75 // A ProfileData object is created to refer to a section of profiling
76 // data in a structured way.
77
78 // Constructor for invalid ProfileData.
79 ProfileData::ProfileData() {
80 _data = NULL;
81 }
82
83 #ifndef PRODUCT
84 void ProfileData::print_shared(outputStream* st, const char* name) const {
85 st->print("bci: %d", bci());
86 st->fill_to(tab_width_one);
87 st->print("%s", name);
88 tab(st);
89 int trap = trap_state();
90 if (trap != 0) {
91 char buf[100];
92 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap));
93 }
94 int flags = data()->flags();
95 if (flags != 0)
96 st->print("flags(%d) ", flags);
97 }
98
99 void ProfileData::tab(outputStream* st, bool first) const {
100 st->fill_to(first ? tab_width_one : tab_width_two);
101 }
102 #endif // !PRODUCT
103
104 // ==================================================================
105 // BitData
106 //
107 // A BitData corresponds to a one-bit flag. This is used to indicate
108 // whether a checkcast bytecode has seen a null value.
109
110
111 #ifndef PRODUCT
112 void BitData::print_data_on(outputStream* st) const {
113 print_shared(st, "BitData");
114 }
115 #endif // !PRODUCT
116
117 // ==================================================================
118 // CounterData
119 //
120 // A CounterData corresponds to a simple counter.
121
122 #ifndef PRODUCT
123 void CounterData::print_data_on(outputStream* st) const {
124 print_shared(st, "CounterData");
125 st->print_cr("count(%u)", count());
126 }
127 #endif // !PRODUCT
128
129 // ==================================================================
130 // JumpData
131 //
132 // A JumpData is used to access profiling information for a direct
133 // branch. It is a counter, used for counting the number of branches,
134 // plus a data displacement, used for realigning the data pointer to
135 // the corresponding target bci.
136
137 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) {
138 assert(stream->bci() == bci(), "wrong pos");
139 int target;
140 Bytecodes::Code c = stream->code();
141 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) {
142 target = stream->dest_w();
143 } else {
144 target = stream->dest();
145 }
146 int my_di = mdo->dp_to_di(dp());
147 int target_di = mdo->bci_to_di(target);
148 int offset = target_di - my_di;
149 set_displacement(offset);
150 }
151
152 #ifndef PRODUCT
153 void JumpData::print_data_on(outputStream* st) const {
154 print_shared(st, "JumpData");
155 st->print_cr("taken(%u) displacement(%d)", taken(), displacement());
156 }
157 #endif // !PRODUCT
158
159 int TypeStackSlotEntries::compute_cell_count(BytecodeStream* stream) {
160 int max = TypeProfileArgsLimit;
161 assert(Bytecodes::is_invoke(stream->code()), "should be invoke");
162 Bytecode_invoke inv(stream->method(), stream->bci());
163
164 ResourceMark rm;
165 SignatureStream ss(inv.signature());
166 int args_count = 0;
167 for ( ; !ss.at_return_type(); ss.next()) {
168 if (ss.is_object() || ss.is_array()) {
169 args_count++;
170 if (args_count >= max) {
171 break;
172 }
173 }
174 }
175 return args_count * per_arg_cell_count + (args_count > 0 ? header_cell_count() : 0);
176 }
177
178 class ArgumentOffsetComputer : public SignatureInfo {
179 private:
180 int _max;
181 GrowableArray<int> _offsets;
182
183 void set(int size, BasicType type) { _size += size; }
184 void do_object(int begin, int end) {
185 if (_offsets.length() < _max) {
186 _offsets.push(_size);
187 }
188 SignatureInfo::do_object(begin, end);
189 }
190 void do_array (int begin, int end) {
191 if (_offsets.length() < _max) {
192 _offsets.push(_size);
193 }
194 SignatureInfo::do_array(begin, end);
195 }
196
197 public:
198 ArgumentOffsetComputer(Symbol* signature, int max)
199 : SignatureInfo(signature), _max(max), _offsets(Thread::current(), max) {
200 }
201
202 int total() { lazy_iterate_parameters(); return _size; }
203
204 int off_at(int i) const { return _offsets.at(i); }
205 };
206
207 void TypeStackSlotEntries::post_initialize(BytecodeStream* stream) {
208 ResourceMark rm;
209
210 assert(Bytecodes::is_invoke(stream->code()), "should be invoke");
211 Bytecode_invoke inv(stream->method(), stream->bci());
212
213 #ifdef ASSERT
214 int count = 0;
215 for (SignatureStream ss(inv.signature()); !ss.at_return_type(); ss.next()) {
216 if (ss.is_object() || ss.is_array()) {
217 count++;
218 if (count >= TypeProfileArgsLimit) {
219 break;
220 }
221 }
222 }
223 assert(count > 0, "room for args type but none found?");
224 check_number_of_arguments(count);
225 #endif
226
227 int start = 0;
228 ArgumentOffsetComputer aos(inv.signature(), number_of_arguments()-start);
229 aos.total();
230 bool has_receiver = inv.has_receiver();
231 for (int i = start; i < number_of_arguments(); i++) {
232 set_stack_slot(i, aos.off_at(i-start) + (has_receiver ? 1 : 0));
233 set_type(i, type_none());
234 }
235 }
236
237 bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) {
238 return !is_type_none(p) &&
239 !((Klass*)klass_part(p))->is_loader_alive(is_alive_cl);
240 }
241
242 void TypeStackSlotEntries::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) {
243 for (int i = 0; i < number_of_arguments(); i++) {
244 intptr_t p = type(i);
245 if (is_loader_alive(is_alive_cl, p)) {
246 set_type(i, type_none());
247 }
248 }
249 }
250
251 bool TypeStackSlotEntries::arguments_profiling_enabled() {
252 return MethodData::profile_arguments();
253 }
254
255 #ifndef PRODUCT
256 void TypeEntries::print_klass(outputStream* st, intptr_t k) {
257 if (is_type_none(k)) {
258 st->print("none");
259 } else if (is_type_unknown(k)) {
260 st->print("unknown");
261 } else {
262 valid_klass(k)->print_value_on(st);
263 }
264 if (was_null_seen(k)) {
265 st->print(" (null seen)");
266 }
267 }
268
269 void TypeStackSlotEntries::print_data_on(outputStream* st) const {
270 _pd->tab(st, true);
271 st->print("argument types");
272 for (int i = 0; i < number_of_arguments(); i++) {
273 _pd->tab(st);
274 st->print("%d: stack(%u) ", i, stack_slot(i));
275 print_klass(st, type(i));
276 st->cr();
277 }
278 }
279
280 void CallTypeData::print_data_on(outputStream* st) const {
281 CounterData::print_data_on(st);
282 _args.print_data_on(st);
283 }
284
285 void VirtualCallTypeData::print_data_on(outputStream* st) const {
286 VirtualCallData::print_data_on(st);
287 _args.print_data_on(st);
288 }
289 #endif
290
291 // ==================================================================
292 // ReceiverTypeData
293 //
294 // A ReceiverTypeData is used to access profiling information about a
295 // dynamic type check. It consists of a counter which counts the total times
296 // that the check is reached, and a series of (Klass*, count) pairs
297 // which are used to store a type profile for the receiver of the check.
298
299 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) {
300 for (uint row = 0; row < row_limit(); row++) {
301 Klass* p = receiver(row);
302 if (p != NULL && !p->is_loader_alive(is_alive_cl)) {
303 clear_row(row);
304 }
305 }
306 }
307
308 #ifndef PRODUCT
309 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const {
310 uint row;
311 int entries = 0;
312 for (row = 0; row < row_limit(); row++) {
313 if (receiver(row) != NULL) entries++;
314 }
315 st->print_cr("count(%u) entries(%u)", count(), entries);
316 int total = count();
317 for (row = 0; row < row_limit(); row++) {
318 if (receiver(row) != NULL) {
319 total += receiver_count(row);
320 }
321 }
322 for (row = 0; row < row_limit(); row++) {
323 if (receiver(row) != NULL) {
324 tab(st);
325 receiver(row)->print_value_on(st);
326 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total);
327 }
328 }
329 }
330 void ReceiverTypeData::print_data_on(outputStream* st) const {
331 print_shared(st, "ReceiverTypeData");
332 print_receiver_data_on(st);
333 }
334 void VirtualCallData::print_data_on(outputStream* st) const {
335 print_shared(st, "VirtualCallData");
336 print_receiver_data_on(st);
337 }
338 #endif // !PRODUCT
339
340 // ==================================================================
341 // RetData
342 //
343 // A RetData is used to access profiling information for a ret bytecode.
344 // It is composed of a count of the number of times that the ret has
345 // been executed, followed by a series of triples of the form
346 // (bci, count, di) which count the number of times that some bci was the
347 // target of the ret and cache a corresponding displacement.
348
349 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) {
350 for (uint row = 0; row < row_limit(); row++) {
351 set_bci_displacement(row, -1);
352 set_bci(row, no_bci);
353 }
354 // release so other threads see a consistent state. bci is used as
366 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) {
367 // First find the mdp which corresponds to the return bci.
368 address mdp = h_mdo->bci_to_dp(return_bci);
369
370 // Now check to see if any of the cache slots are open.
371 for (uint row = 0; row < row_limit(); row++) {
372 if (bci(row) == no_bci) {
373 set_bci_displacement(row, mdp - dp());
374 set_bci_count(row, DataLayout::counter_increment);
375 // Barrier to ensure displacement is written before the bci; allows
376 // the interpreter to read displacement without fear of race condition.
377 release_set_bci(row, return_bci);
378 break;
379 }
380 }
381 return mdp;
382 }
383
384
385 #ifndef PRODUCT
386 void RetData::print_data_on(outputStream* st) const {
387 print_shared(st, "RetData");
388 uint row;
389 int entries = 0;
390 for (row = 0; row < row_limit(); row++) {
391 if (bci(row) != no_bci) entries++;
392 }
393 st->print_cr("count(%u) entries(%u)", count(), entries);
394 for (row = 0; row < row_limit(); row++) {
395 if (bci(row) != no_bci) {
396 tab(st);
397 st->print_cr("bci(%d: count(%u) displacement(%d))",
398 bci(row), bci_count(row), bci_displacement(row));
399 }
400 }
401 }
402 #endif // !PRODUCT
403
404 // ==================================================================
405 // BranchData
406 //
407 // A BranchData is used to access profiling data for a two-way branch.
408 // It consists of taken and not_taken counts as well as a data displacement
409 // for the taken case.
410
411 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) {
412 assert(stream->bci() == bci(), "wrong pos");
413 int target = stream->dest();
414 int my_di = mdo->dp_to_di(dp());
415 int target_di = mdo->bci_to_di(target);
416 int offset = target_di - my_di;
417 set_displacement(offset);
418 }
419
420 #ifndef PRODUCT
421 void BranchData::print_data_on(outputStream* st) const {
422 print_shared(st, "BranchData");
423 st->print_cr("taken(%u) displacement(%d)",
424 taken(), displacement());
425 tab(st);
426 st->print_cr("not taken(%u)", not_taken());
427 }
428 #endif
429
430 // ==================================================================
431 // MultiBranchData
432 //
433 // A MultiBranchData is used to access profiling information for
434 // a multi-way branch (*switch bytecodes). It consists of a series
435 // of (count, displacement) pairs, which count the number of times each
436 // case was taken and specify the data displacment for each branch target.
437
438 int MultiBranchData::compute_cell_count(BytecodeStream* stream) {
439 int cell_count = 0;
440 if (stream->code() == Bytecodes::_tableswitch) {
441 Bytecode_tableswitch sw(stream->method()(), stream->bcp());
475 Bytecode_lookupswitch sw(stream->method()(), stream->bcp());
476 int npairs = sw.number_of_pairs();
477 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len");
478 for (int count = 0; count < npairs; count++) {
479 LookupswitchPair pair = sw.pair_at(count);
480 target = pair.offset() + bci();
481 my_di = mdo->dp_to_di(dp());
482 target_di = mdo->bci_to_di(target);
483 offset = target_di - my_di;
484 set_displacement_at(count, offset);
485 }
486 target = sw.default_offset() + bci();
487 my_di = mdo->dp_to_di(dp());
488 target_di = mdo->bci_to_di(target);
489 offset = target_di - my_di;
490 set_default_displacement(offset);
491 }
492 }
493
494 #ifndef PRODUCT
495 void MultiBranchData::print_data_on(outputStream* st) const {
496 print_shared(st, "MultiBranchData");
497 st->print_cr("default_count(%u) displacement(%d)",
498 default_count(), default_displacement());
499 int cases = number_of_cases();
500 for (int i = 0; i < cases; i++) {
501 tab(st);
502 st->print_cr("count(%u) displacement(%d)",
503 count_at(i), displacement_at(i));
504 }
505 }
506 #endif
507
508 #ifndef PRODUCT
509 void ArgInfoData::print_data_on(outputStream* st) const {
510 print_shared(st, "ArgInfoData");
511 int nargs = number_of_args();
512 for (int i = 0; i < nargs; i++) {
513 st->print(" 0x%x", arg_modified(i));
514 }
515 st->cr();
516 }
517
518 #endif
519 // ==================================================================
520 // MethodData*
521 //
522 // A MethodData* holds information which has been collected about
523 // a method.
524
525 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) {
526 int size = MethodData::compute_allocation_size_in_words(method);
527
528 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD)
529 MethodData(method(), size, CHECK_NULL);
530 }
531
532 int MethodData::bytecode_cell_count(Bytecodes::Code code) {
533 #if defined(COMPILER1) && !defined(COMPILER2)
534 return no_profile_data;
535 #else
536 switch (code) {
537 case Bytecodes::_checkcast:
538 case Bytecodes::_instanceof:
539 case Bytecodes::_aastore:
540 if (TypeProfileCasts) {
541 return ReceiverTypeData::static_cell_count();
542 } else {
543 return BitData::static_cell_count();
544 }
545 case Bytecodes::_invokespecial:
546 case Bytecodes::_invokestatic:
547 if (MethodData::profile_arguments()) {
548 return variable_cell_count;
549 } else {
550 return CounterData::static_cell_count();
551 }
552 case Bytecodes::_goto:
553 case Bytecodes::_goto_w:
554 case Bytecodes::_jsr:
555 case Bytecodes::_jsr_w:
556 return JumpData::static_cell_count();
557 case Bytecodes::_invokevirtual:
558 case Bytecodes::_invokeinterface:
559 if (MethodData::profile_arguments()) {
560 return variable_cell_count;
561 } else {
562 return VirtualCallData::static_cell_count();
563 }
564 case Bytecodes::_invokedynamic:
565 if (MethodData::profile_arguments()) {
566 return variable_cell_count;
567 } else {
568 return CounterData::static_cell_count();
569 }
570 case Bytecodes::_ret:
571 return RetData::static_cell_count();
572 case Bytecodes::_ifeq:
573 case Bytecodes::_ifne:
574 case Bytecodes::_iflt:
575 case Bytecodes::_ifge:
576 case Bytecodes::_ifgt:
577 case Bytecodes::_ifle:
578 case Bytecodes::_if_icmpeq:
579 case Bytecodes::_if_icmpne:
580 case Bytecodes::_if_icmplt:
581 case Bytecodes::_if_icmpge:
582 case Bytecodes::_if_icmpgt:
583 case Bytecodes::_if_icmple:
584 case Bytecodes::_if_acmpeq:
585 case Bytecodes::_if_acmpne:
586 case Bytecodes::_ifnull:
587 case Bytecodes::_ifnonnull:
588 return BranchData::static_cell_count();
589 case Bytecodes::_lookupswitch:
590 case Bytecodes::_tableswitch:
591 return variable_cell_count;
592 }
593 return no_profile_data;
594 #endif
595 }
596
597 // Compute the size of the profiling information corresponding to
598 // the current bytecode.
599 int MethodData::compute_data_size(BytecodeStream* stream) {
600 int cell_count = bytecode_cell_count(stream->code());
601 if (cell_count == no_profile_data) {
602 return 0;
603 }
604 if (cell_count == variable_cell_count) {
605 switch (stream->code()) {
606 case Bytecodes::_lookupswitch:
607 case Bytecodes::_tableswitch:
608 cell_count = MultiBranchData::compute_cell_count(stream);
609 break;
610 case Bytecodes::_invokespecial:
611 case Bytecodes::_invokestatic:
612 case Bytecodes::_invokedynamic:
613 assert(MethodData::profile_arguments(), "should be collecting args profile");
614 if (profile_arguments_for_invoke(stream->method(), stream->bci())) {
615 cell_count = CallTypeData::compute_cell_count(stream);
616 } else {
617 cell_count = CounterData::static_cell_count();
618 }
619 break;
620 case Bytecodes::_invokevirtual:
621 case Bytecodes::_invokeinterface: {
622 assert(MethodData::profile_arguments(), "should be collecting args profile");
623 if (profile_arguments_for_invoke(stream->method(), stream->bci())) {
624 cell_count = VirtualCallTypeData::compute_cell_count(stream);
625 } else {
626 cell_count = VirtualCallData::static_cell_count();
627 }
628 break;
629 }
630 default:
631 fatal("unexpected bytecode for var length profile data");
632 }
633 }
634 // Note: cell_count might be zero, meaning that there is just
635 // a DataLayout header, with no extra cells.
636 assert(cell_count >= 0, "sanity");
637 return DataLayout::compute_size_in_bytes(cell_count);
638 }
639
640 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) {
641 if (ProfileTraps) {
642 // Assume that up to 3% of BCIs with no MDP will need to allocate one.
643 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1;
644 // If the method is large, let the extra BCIs grow numerous (to ~1%).
645 int one_percent_of_data
646 = (uint)data_size / (DataLayout::header_size_in_bytes()*128);
647 if (extra_data_count < one_percent_of_data)
648 extra_data_count = one_percent_of_data;
649 if (extra_data_count > empty_bc_count)
650 extra_data_count = empty_bc_count; // no need for more
651 return extra_data_count;
652 } else {
658 // profiling information about a given method. Size is in bytes.
659 int MethodData::compute_allocation_size_in_bytes(methodHandle method) {
660 int data_size = 0;
661 BytecodeStream stream(method);
662 Bytecodes::Code c;
663 int empty_bc_count = 0; // number of bytecodes lacking data
664 while ((c = stream.next()) >= 0) {
665 int size_in_bytes = compute_data_size(&stream);
666 data_size += size_in_bytes;
667 if (size_in_bytes == 0) empty_bc_count += 1;
668 }
669 int object_size = in_bytes(data_offset()) + data_size;
670
671 // Add some extra DataLayout cells (at least one) to track stray traps.
672 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count);
673 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0);
674
675 // Add a cell to record information about modified arguments.
676 int arg_size = method->size_of_parameters();
677 object_size += DataLayout::compute_size_in_bytes(arg_size+1);
678
679 return object_size;
680 }
681
682 // Compute the size of the MethodData* necessary to store
683 // profiling information about a given method. Size is in words
684 int MethodData::compute_allocation_size_in_words(methodHandle method) {
685 int byte_size = compute_allocation_size_in_bytes(method);
686 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord;
687 return align_object_size(word_size);
688 }
689
690 // Initialize an individual data segment. Returns the size of
691 // the segment in bytes.
692 int MethodData::initialize_data(BytecodeStream* stream,
693 int data_index) {
694 #if defined(COMPILER1) && !defined(COMPILER2)
695 return 0;
696 #else
697 int cell_count = -1;
698 int tag = DataLayout::no_tag;
699 DataLayout* data_layout = data_layout_at(data_index);
700 Bytecodes::Code c = stream->code();
701 switch (c) {
702 case Bytecodes::_checkcast:
703 case Bytecodes::_instanceof:
704 case Bytecodes::_aastore:
705 if (TypeProfileCasts) {
706 cell_count = ReceiverTypeData::static_cell_count();
707 tag = DataLayout::receiver_type_data_tag;
708 } else {
709 cell_count = BitData::static_cell_count();
710 tag = DataLayout::bit_data_tag;
711 }
712 break;
713 case Bytecodes::_invokespecial:
714 case Bytecodes::_invokestatic: {
715 int counter_data_cell_count = CounterData::static_cell_count();
716 if (profile_arguments_for_invoke(stream->method(), stream->bci())) {
717 cell_count = CallTypeData::compute_cell_count(stream);
718 } else {
719 cell_count = counter_data_cell_count;
720 }
721 if (cell_count > counter_data_cell_count) {
722 tag = DataLayout::call_type_data_tag;
723 } else {
724 tag = DataLayout::counter_data_tag;
725 }
726 break;
727 }
728 case Bytecodes::_goto:
729 case Bytecodes::_goto_w:
730 case Bytecodes::_jsr:
731 case Bytecodes::_jsr_w:
732 cell_count = JumpData::static_cell_count();
733 tag = DataLayout::jump_data_tag;
734 break;
735 case Bytecodes::_invokevirtual:
736 case Bytecodes::_invokeinterface: {
737 int virtual_call_data_cell_count = VirtualCallData::static_cell_count();
738 if (profile_arguments_for_invoke(stream->method(), stream->bci())) {
739 cell_count = VirtualCallTypeData::compute_cell_count(stream);
740 } else {
741 cell_count = virtual_call_data_cell_count;
742 }
743 if (cell_count > virtual_call_data_cell_count) {
744 tag = DataLayout::virtual_call_type_data_tag;
745 } else {
746 tag = DataLayout::virtual_call_data_tag;
747 }
748 break;
749 }
750 case Bytecodes::_invokedynamic: {
751 // %%% should make a type profile for any invokedynamic that takes a ref argument
752 int counter_data_cell_count = CounterData::static_cell_count();
753 if (profile_arguments_for_invoke(stream->method(), stream->bci())) {
754 cell_count = CallTypeData::compute_cell_count(stream);
755 } else {
756 cell_count = counter_data_cell_count;
757 }
758 if (cell_count > counter_data_cell_count) {
759 tag = DataLayout::call_type_data_tag;
760 } else {
761 tag = DataLayout::counter_data_tag;
762 }
763 break;
764 }
765 case Bytecodes::_ret:
766 cell_count = RetData::static_cell_count();
767 tag = DataLayout::ret_data_tag;
768 break;
769 case Bytecodes::_ifeq:
770 case Bytecodes::_ifne:
771 case Bytecodes::_iflt:
772 case Bytecodes::_ifge:
773 case Bytecodes::_ifgt:
774 case Bytecodes::_ifle:
775 case Bytecodes::_if_icmpeq:
776 case Bytecodes::_if_icmpne:
777 case Bytecodes::_if_icmplt:
778 case Bytecodes::_if_icmpge:
779 case Bytecodes::_if_icmpgt:
780 case Bytecodes::_if_icmple:
781 case Bytecodes::_if_acmpeq:
782 case Bytecodes::_if_acmpne:
783 case Bytecodes::_ifnull:
784 case Bytecodes::_ifnonnull:
785 cell_count = BranchData::static_cell_count();
786 tag = DataLayout::branch_data_tag;
787 break;
788 case Bytecodes::_lookupswitch:
789 case Bytecodes::_tableswitch:
790 cell_count = MultiBranchData::compute_cell_count(stream);
791 tag = DataLayout::multi_branch_data_tag;
792 break;
793 }
794 assert(tag == DataLayout::multi_branch_data_tag ||
795 (MethodData::profile_arguments() &&
796 (tag == DataLayout::call_type_data_tag ||
797 tag == DataLayout::counter_data_tag ||
798 tag == DataLayout::virtual_call_type_data_tag ||
799 tag == DataLayout::virtual_call_data_tag)) ||
800 cell_count == bytecode_cell_count(c), "cell counts must agree");
801 if (cell_count >= 0) {
802 assert(tag != DataLayout::no_tag, "bad tag");
803 assert(bytecode_has_profile(c), "agree w/ BHP");
804 data_layout->initialize(tag, stream->bci(), cell_count);
805 return DataLayout::compute_size_in_bytes(cell_count);
806 } else {
807 assert(!bytecode_has_profile(c), "agree w/ !BHP");
808 return 0;
809 }
810 #endif
811 }
812
813 // Get the data at an arbitrary (sort of) data index.
814 ProfileData* MethodData::data_at(int data_index) const {
815 if (out_of_bounds(data_index)) {
816 return NULL;
817 }
818 DataLayout* data_layout = data_layout_at(data_index);
819 return data_layout->data_in();
826 ShouldNotReachHere();
827 return NULL;
828 case DataLayout::bit_data_tag:
829 return new BitData(this);
830 case DataLayout::counter_data_tag:
831 return new CounterData(this);
832 case DataLayout::jump_data_tag:
833 return new JumpData(this);
834 case DataLayout::receiver_type_data_tag:
835 return new ReceiverTypeData(this);
836 case DataLayout::virtual_call_data_tag:
837 return new VirtualCallData(this);
838 case DataLayout::ret_data_tag:
839 return new RetData(this);
840 case DataLayout::branch_data_tag:
841 return new BranchData(this);
842 case DataLayout::multi_branch_data_tag:
843 return new MultiBranchData(this);
844 case DataLayout::arg_info_data_tag:
845 return new ArgInfoData(this);
846 case DataLayout::call_type_data_tag:
847 return new CallTypeData(this);
848 case DataLayout::virtual_call_type_data_tag:
849 return new VirtualCallTypeData(this);
850 };
851 }
852
853 // Iteration over data.
854 ProfileData* MethodData::next_data(ProfileData* current) const {
855 int current_index = dp_to_di(current->dp());
856 int next_index = current_index + current->size_in_bytes();
857 ProfileData* next = data_at(next_index);
858 return next;
859 }
860
861 // Give each of the data entries a chance to perform specific
862 // data initialization.
863 void MethodData::post_initialize(BytecodeStream* stream) {
864 ResourceMark rm;
865 ProfileData* data;
866 for (data = first_data(); is_valid(data); data = next_data(data)) {
867 stream->set_start(data->bci());
868 stream->next();
869 data->post_initialize(stream, this);
1097 void MethodData::collect_statistics(KlassSizeStats *sz) const {
1098 int n = sz->count(this);
1099 sz->_method_data_bytes += n;
1100 sz->_method_all_bytes += n;
1101 sz->_rw_bytes += n;
1102 }
1103 #endif // INCLUDE_SERVICES
1104
1105 // Verification
1106
1107 void MethodData::verify_on(outputStream* st) {
1108 guarantee(is_methodData(), "object must be method data");
1109 // guarantee(m->is_perm(), "should be in permspace");
1110 this->verify_data_on(st);
1111 }
1112
1113 void MethodData::verify_data_on(outputStream* st) {
1114 NEEDS_CLEANUP;
1115 // not yet implemented.
1116 }
1117
1118 bool MethodData::profile_jsr292(methodHandle m, int bci) {
1119 if (m->is_compiled_lambda_form()) {
1120 return true;
1121 }
1122
1123 Bytecodes::Code bc = m->code_at(bci);
1124 assert(Bytecodes::is_invoke(m->java_code_at(bci)), "arguments only make sense at call");
1125
1126 return bc == Bytecodes::_invokedynamic || bc == Bytecodes::_invokehandle;
1127 }
1128
1129 int MethodData::profile_arguments_flag() {
1130 return TypeProfile % 10;
1131 }
1132
1133 bool MethodData::profile_arguments() {
1134 return profile_arguments_flag() > 0 && profile_arguments_flag() <= 2;
1135 }
1136
1137 bool MethodData::profile_arguments_jsr292_only() {
1138 return profile_arguments_flag() == 1;
1139 }
1140
1141 bool MethodData::profile_all_arguments() {
1142 return profile_arguments_flag() == 2;
1143 }
1144
1145 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) {
1146 if (!profile_arguments()) {
1147 return false;
1148 }
1149
1150 if (profile_all_arguments()) {
1151 return true;
1152 }
1153
1154 assert(profile_arguments_jsr292_only(), "inconsistent");
1155 return profile_jsr292(m, bci);
1156 }
1157
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