Mon, 12 Aug 2019 18:30:40 +0300
8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens
1 /*
2 * Copyright (c) 1999, 2016, 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 */
25 #include "precompiled.hpp"
26 #include "ci/ciCallProfile.hpp"
27 #include "ci/ciExceptionHandler.hpp"
28 #include "ci/ciInstanceKlass.hpp"
29 #include "ci/ciMethod.hpp"
30 #include "ci/ciMethodBlocks.hpp"
31 #include "ci/ciMethodData.hpp"
32 #include "ci/ciStreams.hpp"
33 #include "ci/ciSymbol.hpp"
34 #include "ci/ciReplay.hpp"
35 #include "ci/ciUtilities.hpp"
36 #include "classfile/systemDictionary.hpp"
37 #include "compiler/abstractCompiler.hpp"
38 #include "compiler/compilerOracle.hpp"
39 #include "compiler/methodLiveness.hpp"
40 #include "interpreter/interpreter.hpp"
41 #include "interpreter/linkResolver.hpp"
42 #include "interpreter/oopMapCache.hpp"
43 #include "memory/allocation.inline.hpp"
44 #include "memory/resourceArea.hpp"
45 #include "oops/generateOopMap.hpp"
46 #include "oops/oop.inline.hpp"
47 #include "prims/nativeLookup.hpp"
48 #include "runtime/deoptimization.hpp"
49 #include "utilities/bitMap.inline.hpp"
50 #include "utilities/xmlstream.hpp"
51 #ifdef COMPILER2
52 #include "ci/bcEscapeAnalyzer.hpp"
53 #include "ci/ciTypeFlow.hpp"
54 #include "oops/method.hpp"
55 #endif
56 #ifdef SHARK
57 #include "ci/ciTypeFlow.hpp"
58 #include "oops/method.hpp"
59 #endif
61 // ciMethod
62 //
63 // This class represents a Method* in the HotSpot virtual
64 // machine.
67 // ------------------------------------------------------------------
68 // ciMethod::ciMethod
69 //
70 // Loaded method.
71 ciMethod::ciMethod(methodHandle h_m, ciInstanceKlass* holder) :
72 ciMetadata(h_m()),
73 _holder(holder)
74 {
75 assert(h_m() != NULL, "no null method");
77 // These fields are always filled in in loaded methods.
78 _flags = ciFlags(h_m()->access_flags());
80 // Easy to compute, so fill them in now.
81 _max_stack = h_m()->max_stack();
82 _max_locals = h_m()->max_locals();
83 _code_size = h_m()->code_size();
84 _intrinsic_id = h_m()->intrinsic_id();
85 _handler_count = h_m()->exception_table_length();
86 _size_of_parameters = h_m()->size_of_parameters();
87 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes();
88 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching();
89 _is_c1_compilable = !h_m()->is_not_c1_compilable();
90 _is_c2_compilable = !h_m()->is_not_c2_compilable();
91 // Lazy fields, filled in on demand. Require allocation.
92 _code = NULL;
93 _exception_handlers = NULL;
94 _liveness = NULL;
95 _method_blocks = NULL;
96 #if defined(COMPILER2) || defined(SHARK)
97 _flow = NULL;
98 _bcea = NULL;
99 #endif // COMPILER2 || SHARK
101 ciEnv *env = CURRENT_ENV;
102 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) {
103 // 6328518 check hotswap conditions under the right lock.
104 MutexLocker locker(Compile_lock);
105 if (Dependencies::check_evol_method(h_m()) != NULL) {
106 _is_c1_compilable = false;
107 _is_c2_compilable = false;
108 }
109 } else {
110 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
111 }
113 if (h_m()->method_holder()->is_linked()) {
114 _can_be_statically_bound = h_m()->can_be_statically_bound();
115 } else {
116 // Have to use a conservative value in this case.
117 _can_be_statically_bound = false;
118 }
120 // Adjust the definition of this condition to be more useful:
121 // %%% take these conditions into account in vtable generation
122 if (!_can_be_statically_bound && h_m()->is_private())
123 _can_be_statically_bound = true;
124 if (_can_be_statically_bound && h_m()->is_abstract())
125 _can_be_statically_bound = false;
127 // generating _signature may allow GC and therefore move m.
128 // These fields are always filled in.
129 _name = env->get_symbol(h_m()->name());
130 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature());
131 constantPoolHandle cpool = h_m()->constants();
132 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);
133 _method_data = NULL;
134 // Take a snapshot of these values, so they will be commensurate with the MDO.
135 if (ProfileInterpreter || TieredCompilation) {
136 int invcnt = h_m()->interpreter_invocation_count();
137 // if the value overflowed report it as max int
138 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;
139 _interpreter_throwout_count = h_m()->interpreter_throwout_count();
140 } else {
141 _interpreter_invocation_count = 0;
142 _interpreter_throwout_count = 0;
143 }
144 if (_interpreter_invocation_count == 0)
145 _interpreter_invocation_count = 1;
146 _instructions_size = -1;
147 #ifdef ASSERT
148 if (ReplayCompiles) {
149 ciReplay::initialize(this);
150 }
151 #endif
152 }
155 // ------------------------------------------------------------------
156 // ciMethod::ciMethod
157 //
158 // Unloaded method.
159 ciMethod::ciMethod(ciInstanceKlass* holder,
160 ciSymbol* name,
161 ciSymbol* signature,
162 ciInstanceKlass* accessor) :
163 ciMetadata((Metadata*)NULL),
164 _name( name),
165 _holder( holder),
166 _intrinsic_id( vmIntrinsics::_none),
167 _liveness( NULL),
168 _can_be_statically_bound(false),
169 _method_blocks( NULL),
170 _method_data( NULL)
171 #if defined(COMPILER2) || defined(SHARK)
172 ,
173 _flow( NULL),
174 _bcea( NULL),
175 _instructions_size(-1)
176 #endif // COMPILER2 || SHARK
177 {
178 // Usually holder and accessor are the same type but in some cases
179 // the holder has the wrong class loader (e.g. invokedynamic call
180 // sites) so we pass the accessor.
181 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature);
182 }
185 // ------------------------------------------------------------------
186 // ciMethod::load_code
187 //
188 // Load the bytecodes and exception handler table for this method.
189 void ciMethod::load_code() {
190 VM_ENTRY_MARK;
191 assert(is_loaded(), "only loaded methods have code");
193 Method* me = get_Method();
194 Arena* arena = CURRENT_THREAD_ENV->arena();
196 // Load the bytecodes.
197 _code = (address)arena->Amalloc(code_size());
198 memcpy(_code, me->code_base(), code_size());
200 // Revert any breakpoint bytecodes in ci's copy
201 if (me->number_of_breakpoints() > 0) {
202 BreakpointInfo* bp = me->method_holder()->breakpoints();
203 for (; bp != NULL; bp = bp->next()) {
204 if (bp->match(me)) {
205 code_at_put(bp->bci(), bp->orig_bytecode());
206 }
207 }
208 }
210 // And load the exception table.
211 ExceptionTable exc_table(me);
213 // Allocate one extra spot in our list of exceptions. This
214 // last entry will be used to represent the possibility that
215 // an exception escapes the method. See ciExceptionHandlerStream
216 // for details.
217 _exception_handlers =
218 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*)
219 * (_handler_count + 1));
220 if (_handler_count > 0) {
221 for (int i=0; i<_handler_count; i++) {
222 _exception_handlers[i] = new (arena) ciExceptionHandler(
223 holder(),
224 /* start */ exc_table.start_pc(i),
225 /* limit */ exc_table.end_pc(i),
226 /* goto pc */ exc_table.handler_pc(i),
227 /* cp index */ exc_table.catch_type_index(i));
228 }
229 }
231 // Put an entry at the end of our list to represent the possibility
232 // of exceptional exit.
233 _exception_handlers[_handler_count] =
234 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0);
236 if (CIPrintMethodCodes) {
237 print_codes();
238 }
239 }
242 // ------------------------------------------------------------------
243 // ciMethod::has_linenumber_table
244 //
245 // length unknown until decompression
246 bool ciMethod::has_linenumber_table() const {
247 check_is_loaded();
248 VM_ENTRY_MARK;
249 return get_Method()->has_linenumber_table();
250 }
253 // ------------------------------------------------------------------
254 // ciMethod::compressed_linenumber_table
255 u_char* ciMethod::compressed_linenumber_table() const {
256 check_is_loaded();
257 VM_ENTRY_MARK;
258 return get_Method()->compressed_linenumber_table();
259 }
262 // ------------------------------------------------------------------
263 // ciMethod::line_number_from_bci
264 int ciMethod::line_number_from_bci(int bci) const {
265 check_is_loaded();
266 VM_ENTRY_MARK;
267 return get_Method()->line_number_from_bci(bci);
268 }
271 // ------------------------------------------------------------------
272 // ciMethod::vtable_index
273 //
274 // Get the position of this method's entry in the vtable, if any.
275 int ciMethod::vtable_index() {
276 check_is_loaded();
277 assert(holder()->is_linked(), "must be linked");
278 VM_ENTRY_MARK;
279 return get_Method()->vtable_index();
280 }
283 #ifdef SHARK
284 // ------------------------------------------------------------------
285 // ciMethod::itable_index
286 //
287 // Get the position of this method's entry in the itable, if any.
288 int ciMethod::itable_index() {
289 check_is_loaded();
290 assert(holder()->is_linked(), "must be linked");
291 VM_ENTRY_MARK;
292 Method* m = get_Method();
293 if (!m->has_itable_index())
294 return Method::nonvirtual_vtable_index;
295 return m->itable_index();
296 }
297 #endif // SHARK
300 // ------------------------------------------------------------------
301 // ciMethod::native_entry
302 //
303 // Get the address of this method's native code, if any.
304 address ciMethod::native_entry() {
305 check_is_loaded();
306 assert(flags().is_native(), "must be native method");
307 VM_ENTRY_MARK;
308 Method* method = get_Method();
309 address entry = method->native_function();
310 assert(entry != NULL, "must be valid entry point");
311 return entry;
312 }
315 // ------------------------------------------------------------------
316 // ciMethod::interpreter_entry
317 //
318 // Get the entry point for running this method in the interpreter.
319 address ciMethod::interpreter_entry() {
320 check_is_loaded();
321 VM_ENTRY_MARK;
322 methodHandle mh(THREAD, get_Method());
323 return Interpreter::entry_for_method(mh);
324 }
327 // ------------------------------------------------------------------
328 // ciMethod::uses_balanced_monitors
329 //
330 // Does this method use monitors in a strict stack-disciplined manner?
331 bool ciMethod::has_balanced_monitors() {
332 check_is_loaded();
333 if (_balanced_monitors) return true;
335 // Analyze the method to see if monitors are used properly.
336 VM_ENTRY_MARK;
337 methodHandle method(THREAD, get_Method());
338 assert(method->has_monitor_bytecodes(), "should have checked this");
340 // Check to see if a previous compilation computed the
341 // monitor-matching analysis.
342 if (method->guaranteed_monitor_matching()) {
343 _balanced_monitors = true;
344 return true;
345 }
347 {
348 EXCEPTION_MARK;
349 ResourceMark rm(THREAD);
350 GeneratePairingInfo gpi(method);
351 gpi.compute_map(CATCH);
352 if (!gpi.monitor_safe()) {
353 return false;
354 }
355 method->set_guaranteed_monitor_matching();
356 _balanced_monitors = true;
357 }
358 return true;
359 }
362 // ------------------------------------------------------------------
363 // ciMethod::get_flow_analysis
364 ciTypeFlow* ciMethod::get_flow_analysis() {
365 #if defined(COMPILER2) || defined(SHARK)
366 if (_flow == NULL) {
367 ciEnv* env = CURRENT_ENV;
368 _flow = new (env->arena()) ciTypeFlow(env, this);
369 _flow->do_flow();
370 }
371 return _flow;
372 #else // COMPILER2 || SHARK
373 ShouldNotReachHere();
374 return NULL;
375 #endif // COMPILER2 || SHARK
376 }
379 // ------------------------------------------------------------------
380 // ciMethod::get_osr_flow_analysis
381 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) {
382 #if defined(COMPILER2) || defined(SHARK)
383 // OSR entry points are always place after a call bytecode of some sort
384 assert(osr_bci >= 0, "must supply valid OSR entry point");
385 ciEnv* env = CURRENT_ENV;
386 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci);
387 flow->do_flow();
388 return flow;
389 #else // COMPILER2 || SHARK
390 ShouldNotReachHere();
391 return NULL;
392 #endif // COMPILER2 || SHARK
393 }
395 // ------------------------------------------------------------------
396 // ciMethod::raw_liveness_at_bci
397 //
398 // Which local variables are live at a specific bci?
399 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) {
400 check_is_loaded();
401 if (_liveness == NULL) {
402 // Create the liveness analyzer.
403 Arena* arena = CURRENT_ENV->arena();
404 _liveness = new (arena) MethodLiveness(arena, this);
405 _liveness->compute_liveness();
406 }
407 return _liveness->get_liveness_at(bci);
408 }
410 // ------------------------------------------------------------------
411 // ciMethod::liveness_at_bci
412 //
413 // Which local variables are live at a specific bci? When debugging
414 // will return true for all locals in some cases to improve debug
415 // information.
416 MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
417 MethodLivenessResult result = raw_liveness_at_bci(bci);
418 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) {
419 // Keep all locals live for the user's edification and amusement.
420 result.at_put_range(0, result.size(), true);
421 }
422 return result;
423 }
425 // ciMethod::live_local_oops_at_bci
426 //
427 // find all the live oops in the locals array for a particular bci
428 // Compute what the interpreter believes by using the interpreter
429 // oopmap generator. This is used as a double check during osr to
430 // guard against conservative result from MethodLiveness making us
431 // think a dead oop is live. MethodLiveness is conservative in the
432 // sense that it may consider locals to be live which cannot be live,
433 // like in the case where a local could contain an oop or a primitive
434 // along different paths. In that case the local must be dead when
435 // those paths merge. Since the interpreter's viewpoint is used when
436 // gc'ing an interpreter frame we need to use its viewpoint during
437 // OSR when loading the locals.
439 BitMap ciMethod::live_local_oops_at_bci(int bci) {
440 VM_ENTRY_MARK;
441 InterpreterOopMap mask;
442 OopMapCache::compute_one_oop_map(get_Method(), bci, &mask);
443 int mask_size = max_locals();
444 BitMap result(mask_size);
445 result.clear();
446 int i;
447 for (i = 0; i < mask_size ; i++ ) {
448 if (mask.is_oop(i)) result.set_bit(i);
449 }
450 return result;
451 }
454 #ifdef COMPILER1
455 // ------------------------------------------------------------------
456 // ciMethod::bci_block_start
457 //
458 // Marks all bcis where a new basic block starts
459 const BitMap ciMethod::bci_block_start() {
460 check_is_loaded();
461 if (_liveness == NULL) {
462 // Create the liveness analyzer.
463 Arena* arena = CURRENT_ENV->arena();
464 _liveness = new (arena) MethodLiveness(arena, this);
465 _liveness->compute_liveness();
466 }
468 return _liveness->get_bci_block_start();
469 }
470 #endif // COMPILER1
473 // ------------------------------------------------------------------
474 // ciMethod::call_profile_at_bci
475 //
476 // Get the ciCallProfile for the invocation of this method.
477 // Also reports receiver types for non-call type checks (if TypeProfileCasts).
478 ciCallProfile ciMethod::call_profile_at_bci(int bci) {
479 ResourceMark rm;
480 ciCallProfile result;
481 if (method_data() != NULL && method_data()->is_mature()) {
482 ciProfileData* data = method_data()->bci_to_data(bci);
483 if (data != NULL && data->is_CounterData()) {
484 // Every profiled call site has a counter.
485 int count = data->as_CounterData()->count();
487 if (!data->is_ReceiverTypeData()) {
488 result._receiver_count[0] = 0; // that's a definite zero
489 } else { // ReceiverTypeData is a subclass of CounterData
490 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
491 // In addition, virtual call sites have receiver type information
492 int receivers_count_total = 0;
493 int morphism = 0;
494 // Precompute morphism for the possible fixup
495 for (uint i = 0; i < call->row_limit(); i++) {
496 ciKlass* receiver = call->receiver(i);
497 if (receiver == NULL) continue;
498 morphism++;
499 }
500 int epsilon = 0;
501 if (TieredCompilation && ProfileInterpreter) {
502 // Interpreter and C1 treat final and special invokes differently.
503 // C1 will record a type, whereas the interpreter will just
504 // increment the count. Detect this case.
505 if (morphism == 1 && count > 0) {
506 epsilon = count;
507 count = 0;
508 }
509 }
510 for (uint i = 0; i < call->row_limit(); i++) {
511 ciKlass* receiver = call->receiver(i);
512 if (receiver == NULL) continue;
513 int rcount = call->receiver_count(i) + epsilon;
514 if (rcount == 0) rcount = 1; // Should be valid value
515 receivers_count_total += rcount;
516 // Add the receiver to result data.
517 result.add_receiver(receiver, rcount);
518 // If we extend profiling to record methods,
519 // we will set result._method also.
520 }
521 // Determine call site's morphism.
522 // The call site count is 0 with known morphism (onlt 1 or 2 receivers)
523 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof.
524 // The call site count is > 0 in the case of a polymorphic virtual call.
525 if (morphism > 0 && morphism == result._limit) {
526 // The morphism <= MorphismLimit.
527 if ((morphism < ciCallProfile::MorphismLimit) ||
528 (morphism == ciCallProfile::MorphismLimit && count == 0)) {
529 #ifdef ASSERT
530 if (count > 0) {
531 this->print_short_name(tty);
532 tty->print_cr(" @ bci:%d", bci);
533 this->print_codes();
534 assert(false, "this call site should not be polymorphic");
535 }
536 #endif
537 result._morphism = morphism;
538 }
539 }
540 // Make the count consistent if this is a call profile. If count is
541 // zero or less, presume that this is a typecheck profile and
542 // do nothing. Otherwise, increase count to be the sum of all
543 // receiver's counts.
544 if (count >= 0) {
545 count += receivers_count_total;
546 }
547 }
548 result._count = count;
549 }
550 }
551 return result;
552 }
554 // ------------------------------------------------------------------
555 // Add new receiver and sort data by receiver's profile count.
556 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) {
557 // Add new receiver and sort data by receiver's counts when we have space
558 // for it otherwise replace the less called receiver (less called receiver
559 // is placed to the last array element which is not used).
560 // First array's element contains most called receiver.
561 int i = _limit;
562 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) {
563 _receiver[i] = _receiver[i-1];
564 _receiver_count[i] = _receiver_count[i-1];
565 }
566 _receiver[i] = receiver;
567 _receiver_count[i] = receiver_count;
568 if (_limit < MorphismLimit) _limit++;
569 }
572 void ciMethod::assert_virtual_call_type_ok(int bci) {
573 assert(java_code_at_bci(bci) == Bytecodes::_invokevirtual ||
574 java_code_at_bci(bci) == Bytecodes::_invokeinterface, err_msg("unexpected bytecode %s", Bytecodes::name(java_code_at_bci(bci))));
575 }
577 void ciMethod::assert_call_type_ok(int bci) {
578 assert(java_code_at_bci(bci) == Bytecodes::_invokestatic ||
579 java_code_at_bci(bci) == Bytecodes::_invokespecial ||
580 java_code_at_bci(bci) == Bytecodes::_invokedynamic, err_msg("unexpected bytecode %s", Bytecodes::name(java_code_at_bci(bci))));
581 }
583 /**
584 * Check whether profiling provides a type for the argument i to the
585 * call at bci bci
586 *
587 * @param bci bci of the call
588 * @param i argument number
589 * @return profiled type
590 *
591 * If the profile reports that the argument may be null, return false
592 * at least for now.
593 */
594 ciKlass* ciMethod::argument_profiled_type(int bci, int i) {
595 if (MethodData::profile_parameters() && method_data() != NULL && method_data()->is_mature()) {
596 ciProfileData* data = method_data()->bci_to_data(bci);
597 if (data != NULL) {
598 if (data->is_VirtualCallTypeData()) {
599 assert_virtual_call_type_ok(bci);
600 ciVirtualCallTypeData* call = (ciVirtualCallTypeData*)data->as_VirtualCallTypeData();
601 if (i >= call->number_of_arguments()) {
602 return NULL;
603 }
604 ciKlass* type = call->valid_argument_type(i);
605 if (type != NULL && !call->argument_maybe_null(i)) {
606 return type;
607 }
608 } else if (data->is_CallTypeData()) {
609 assert_call_type_ok(bci);
610 ciCallTypeData* call = (ciCallTypeData*)data->as_CallTypeData();
611 if (i >= call->number_of_arguments()) {
612 return NULL;
613 }
614 ciKlass* type = call->valid_argument_type(i);
615 if (type != NULL && !call->argument_maybe_null(i)) {
616 return type;
617 }
618 }
619 }
620 }
621 return NULL;
622 }
624 /**
625 * Check whether profiling provides a type for the return value from
626 * the call at bci bci
627 *
628 * @param bci bci of the call
629 * @return profiled type
630 *
631 * If the profile reports that the argument may be null, return false
632 * at least for now.
633 */
634 ciKlass* ciMethod::return_profiled_type(int bci) {
635 if (MethodData::profile_return() && method_data() != NULL && method_data()->is_mature()) {
636 ciProfileData* data = method_data()->bci_to_data(bci);
637 if (data != NULL) {
638 if (data->is_VirtualCallTypeData()) {
639 assert_virtual_call_type_ok(bci);
640 ciVirtualCallTypeData* call = (ciVirtualCallTypeData*)data->as_VirtualCallTypeData();
641 ciKlass* type = call->valid_return_type();
642 if (type != NULL && !call->return_maybe_null()) {
643 return type;
644 }
645 } else if (data->is_CallTypeData()) {
646 assert_call_type_ok(bci);
647 ciCallTypeData* call = (ciCallTypeData*)data->as_CallTypeData();
648 ciKlass* type = call->valid_return_type();
649 if (type != NULL && !call->return_maybe_null()) {
650 return type;
651 }
652 }
653 }
654 }
655 return NULL;
656 }
658 /**
659 * Check whether profiling provides a type for the parameter i
660 *
661 * @param i parameter number
662 * @return profiled type
663 *
664 * If the profile reports that the argument may be null, return false
665 * at least for now.
666 */
667 ciKlass* ciMethod::parameter_profiled_type(int i) {
668 if (MethodData::profile_parameters() && method_data() != NULL && method_data()->is_mature()) {
669 ciParametersTypeData* parameters = method_data()->parameters_type_data();
670 if (parameters != NULL && i < parameters->number_of_parameters()) {
671 ciKlass* type = parameters->valid_parameter_type(i);
672 if (type != NULL && !parameters->parameter_maybe_null(i)) {
673 return type;
674 }
675 }
676 }
677 return NULL;
678 }
681 // ------------------------------------------------------------------
682 // ciMethod::find_monomorphic_target
683 //
684 // Given a certain calling environment, find the monomorphic target
685 // for the call. Return NULL if the call is not monomorphic in
686 // its calling environment, or if there are only abstract methods.
687 // The returned method is never abstract.
688 // Note: If caller uses a non-null result, it must inform dependencies
689 // via assert_unique_concrete_method or assert_leaf_type.
690 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,
691 ciInstanceKlass* callee_holder,
692 ciInstanceKlass* actual_recv,
693 bool check_access) {
694 check_is_loaded();
696 if (actual_recv->is_interface()) {
697 // %%% We cannot trust interface types, yet. See bug 6312651.
698 return NULL;
699 }
701 ciMethod* root_m = resolve_invoke(caller, actual_recv, check_access);
702 if (root_m == NULL) {
703 // Something went wrong looking up the actual receiver method.
704 return NULL;
705 }
706 assert(!root_m->is_abstract(), "resolve_invoke promise");
708 // Make certain quick checks even if UseCHA is false.
710 // Is it private or final?
711 if (root_m->can_be_statically_bound()) {
712 return root_m;
713 }
715 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) {
716 // Easy case. There is no other place to put a method, so don't bother
717 // to go through the VM_ENTRY_MARK and all the rest.
718 return root_m;
719 }
721 // Array methods (clone, hashCode, etc.) are always statically bound.
722 // If we were to see an array type here, we'd return root_m.
723 // However, this method processes only ciInstanceKlasses. (See 4962591.)
724 // The inline_native_clone intrinsic narrows Object to T[] properly,
725 // so there is no need to do the same job here.
727 if (!UseCHA) return NULL;
729 VM_ENTRY_MARK;
731 // Disable CHA for default methods for now
732 if (root_m->get_Method()->is_default_method()) {
733 return NULL;
734 }
736 methodHandle target;
737 {
738 MutexLocker locker(Compile_lock);
739 Klass* context = actual_recv->get_Klass();
740 target = Dependencies::find_unique_concrete_method(context,
741 root_m->get_Method());
742 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.
743 }
745 #ifndef PRODUCT
746 if (TraceDependencies && target() != NULL && target() != root_m->get_Method()) {
747 tty->print("found a non-root unique target method");
748 tty->print_cr(" context = %s", InstanceKlass::cast(actual_recv->get_Klass())->external_name());
749 tty->print(" method = ");
750 target->print_short_name(tty);
751 tty->cr();
752 }
753 #endif //PRODUCT
755 if (target() == NULL) {
756 return NULL;
757 }
758 if (target() == root_m->get_Method()) {
759 return root_m;
760 }
761 if (!root_m->is_public() &&
762 !root_m->is_protected()) {
763 // If we are going to reason about inheritance, it's easiest
764 // if the method in question is public, protected, or private.
765 // If the answer is not root_m, it is conservatively correct
766 // to return NULL, even if the CHA encountered irrelevant
767 // methods in other packages.
768 // %%% TO DO: Work out logic for package-private methods
769 // with the same name but different vtable indexes.
770 return NULL;
771 }
772 return CURRENT_THREAD_ENV->get_method(target());
773 }
775 // ------------------------------------------------------------------
776 // ciMethod::resolve_invoke
777 //
778 // Given a known receiver klass, find the target for the call.
779 // Return NULL if the call has no target or the target is abstract.
780 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver, bool check_access) {
781 check_is_loaded();
782 VM_ENTRY_MARK;
784 KlassHandle caller_klass (THREAD, caller->get_Klass());
785 KlassHandle h_recv (THREAD, exact_receiver->get_Klass());
786 KlassHandle h_resolved (THREAD, holder()->get_Klass());
787 Symbol* h_name = name()->get_symbol();
788 Symbol* h_signature = signature()->get_symbol();
790 methodHandle m;
791 // Only do exact lookup if receiver klass has been linked. Otherwise,
792 // the vtable has not been setup, and the LinkResolver will fail.
793 if (h_recv->oop_is_array()
794 ||
795 InstanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) {
796 if (holder()->is_interface()) {
797 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass, check_access);
798 } else {
799 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass, check_access);
800 }
801 }
803 if (m.is_null()) {
804 // Return NULL only if there was a problem with lookup (uninitialized class, etc.)
805 return NULL;
806 }
808 ciMethod* result = this;
809 if (m() != get_Method()) {
810 result = CURRENT_THREAD_ENV->get_method(m());
811 }
813 // Don't return abstract methods because they aren't
814 // optimizable or interesting.
815 if (result->is_abstract()) {
816 return NULL;
817 } else {
818 return result;
819 }
820 }
822 // ------------------------------------------------------------------
823 // ciMethod::resolve_vtable_index
824 //
825 // Given a known receiver klass, find the vtable index for the call.
826 // Return Method::invalid_vtable_index if the vtable_index is unknown.
827 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) {
828 check_is_loaded();
830 int vtable_index = Method::invalid_vtable_index;
831 // Only do lookup if receiver klass has been linked. Otherwise,
832 // the vtable has not been setup, and the LinkResolver will fail.
833 if (!receiver->is_interface()
834 && (!receiver->is_instance_klass() ||
835 receiver->as_instance_klass()->is_linked())) {
836 VM_ENTRY_MARK;
838 KlassHandle caller_klass (THREAD, caller->get_Klass());
839 KlassHandle h_recv (THREAD, receiver->get_Klass());
840 Symbol* h_name = name()->get_symbol();
841 Symbol* h_signature = signature()->get_symbol();
843 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass);
844 if (vtable_index == Method::nonvirtual_vtable_index) {
845 // A statically bound method. Return "no such index".
846 vtable_index = Method::invalid_vtable_index;
847 }
848 }
850 return vtable_index;
851 }
853 // ------------------------------------------------------------------
854 // ciMethod::interpreter_call_site_count
855 int ciMethod::interpreter_call_site_count(int bci) {
856 if (method_data() != NULL) {
857 ResourceMark rm;
858 ciProfileData* data = method_data()->bci_to_data(bci);
859 if (data != NULL && data->is_CounterData()) {
860 return scale_count(data->as_CounterData()->count());
861 }
862 }
863 return -1; // unknown
864 }
866 // ------------------------------------------------------------------
867 // ciMethod::get_field_at_bci
868 ciField* ciMethod::get_field_at_bci(int bci, bool &will_link) {
869 ciBytecodeStream iter(this);
870 iter.reset_to_bci(bci);
871 iter.next();
872 return iter.get_field(will_link);
873 }
875 // ------------------------------------------------------------------
876 // ciMethod::get_method_at_bci
877 ciMethod* ciMethod::get_method_at_bci(int bci, bool &will_link, ciSignature* *declared_signature) {
878 ciBytecodeStream iter(this);
879 iter.reset_to_bci(bci);
880 iter.next();
881 return iter.get_method(will_link, declared_signature);
882 }
884 // ------------------------------------------------------------------
885 // Adjust a CounterData count to be commensurate with
886 // interpreter_invocation_count. If the MDO exists for
887 // only 25% of the time the method exists, then the
888 // counts in the MDO should be scaled by 4X, so that
889 // they can be usefully and stably compared against the
890 // invocation counts in methods.
891 int ciMethod::scale_count(int count, float prof_factor) {
892 if (count > 0 && method_data() != NULL) {
893 int counter_life;
894 int method_life = interpreter_invocation_count();
895 if (TieredCompilation) {
896 // In tiered the MDO's life is measured directly, so just use the snapshotted counters
897 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count());
898 } else {
899 int current_mileage = method_data()->current_mileage();
900 int creation_mileage = method_data()->creation_mileage();
901 counter_life = current_mileage - creation_mileage;
902 }
904 // counter_life due to backedge_counter could be > method_life
905 if (counter_life > method_life)
906 counter_life = method_life;
907 if (0 < counter_life && counter_life <= method_life) {
908 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5);
909 count = (count > 0) ? count : 1;
910 }
911 }
912 return count;
913 }
916 // ------------------------------------------------------------------
917 // ciMethod::is_special_get_caller_class_method
918 //
919 bool ciMethod::is_ignored_by_security_stack_walk() const {
920 check_is_loaded();
921 VM_ENTRY_MARK;
922 return get_Method()->is_ignored_by_security_stack_walk();
923 }
926 // ------------------------------------------------------------------
927 // invokedynamic support
929 // ------------------------------------------------------------------
930 // ciMethod::is_method_handle_intrinsic
931 //
932 // Return true if the method is an instance of the JVM-generated
933 // signature-polymorphic MethodHandle methods, _invokeBasic, _linkToVirtual, etc.
934 bool ciMethod::is_method_handle_intrinsic() const {
935 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
936 return (MethodHandles::is_signature_polymorphic(iid) &&
937 MethodHandles::is_signature_polymorphic_intrinsic(iid));
938 }
940 // ------------------------------------------------------------------
941 // ciMethod::is_compiled_lambda_form
942 //
943 // Return true if the method is a generated MethodHandle adapter.
944 // These are built by Java code.
945 bool ciMethod::is_compiled_lambda_form() const {
946 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
947 return iid == vmIntrinsics::_compiledLambdaForm;
948 }
950 // ------------------------------------------------------------------
951 // ciMethod::is_object_initializer
952 //
953 bool ciMethod::is_object_initializer() const {
954 return name() == ciSymbol::object_initializer_name();
955 }
957 // ------------------------------------------------------------------
958 // ciMethod::has_member_arg
959 //
960 // Return true if the method is a linker intrinsic like _linkToVirtual.
961 // These are built by the JVM.
962 bool ciMethod::has_member_arg() const {
963 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
964 return (MethodHandles::is_signature_polymorphic(iid) &&
965 MethodHandles::has_member_arg(iid));
966 }
968 // ------------------------------------------------------------------
969 // ciMethod::ensure_method_data
970 //
971 // Generate new MethodData* objects at compile time.
972 // Return true if allocation was successful or no MDO is required.
973 bool ciMethod::ensure_method_data(methodHandle h_m) {
974 EXCEPTION_CONTEXT;
975 if (is_native() || is_abstract() || h_m()->is_accessor()) {
976 return true;
977 }
978 if (h_m()->method_data() == NULL) {
979 Method::build_interpreter_method_data(h_m, THREAD);
980 if (HAS_PENDING_EXCEPTION) {
981 CLEAR_PENDING_EXCEPTION;
982 }
983 }
984 if (h_m()->method_data() != NULL) {
985 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
986 _method_data->load_data();
987 return true;
988 } else {
989 _method_data = CURRENT_ENV->get_empty_methodData();
990 return false;
991 }
992 }
994 // public, retroactive version
995 bool ciMethod::ensure_method_data() {
996 bool result = true;
997 if (_method_data == NULL || _method_data->is_empty()) {
998 GUARDED_VM_ENTRY({
999 result = ensure_method_data(get_Method());
1000 });
1001 }
1002 return result;
1003 }
1006 // ------------------------------------------------------------------
1007 // ciMethod::method_data
1008 //
1009 ciMethodData* ciMethod::method_data() {
1010 if (_method_data != NULL) {
1011 return _method_data;
1012 }
1013 VM_ENTRY_MARK;
1014 ciEnv* env = CURRENT_ENV;
1015 Thread* my_thread = JavaThread::current();
1016 methodHandle h_m(my_thread, get_Method());
1018 if (h_m()->method_data() != NULL) {
1019 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
1020 _method_data->load_data();
1021 } else {
1022 _method_data = CURRENT_ENV->get_empty_methodData();
1023 }
1024 return _method_data;
1026 }
1028 // ------------------------------------------------------------------
1029 // ciMethod::method_data_or_null
1030 // Returns a pointer to ciMethodData if MDO exists on the VM side,
1031 // NULL otherwise.
1032 ciMethodData* ciMethod::method_data_or_null() {
1033 ciMethodData *md = method_data();
1034 if (md->is_empty()) {
1035 return NULL;
1036 }
1037 return md;
1038 }
1040 // ------------------------------------------------------------------
1041 // ciMethod::ensure_method_counters
1042 //
1043 MethodCounters* ciMethod::ensure_method_counters() {
1044 check_is_loaded();
1045 VM_ENTRY_MARK;
1046 methodHandle mh(THREAD, get_Method());
1047 MethodCounters* method_counters = mh->get_method_counters(CHECK_NULL);
1048 return method_counters;
1049 }
1051 // ------------------------------------------------------------------
1052 // ciMethod::should_exclude
1053 //
1054 // Should this method be excluded from compilation?
1055 bool ciMethod::should_exclude() {
1056 check_is_loaded();
1057 VM_ENTRY_MARK;
1058 methodHandle mh(THREAD, get_Method());
1059 bool ignore;
1060 return CompilerOracle::should_exclude(mh, ignore);
1061 }
1063 // ------------------------------------------------------------------
1064 // ciMethod::should_inline
1065 //
1066 // Should this method be inlined during compilation?
1067 bool ciMethod::should_inline() {
1068 check_is_loaded();
1069 VM_ENTRY_MARK;
1070 methodHandle mh(THREAD, get_Method());
1071 return CompilerOracle::should_inline(mh);
1072 }
1074 // ------------------------------------------------------------------
1075 // ciMethod::should_not_inline
1076 //
1077 // Should this method be disallowed from inlining during compilation?
1078 bool ciMethod::should_not_inline() {
1079 check_is_loaded();
1080 VM_ENTRY_MARK;
1081 methodHandle mh(THREAD, get_Method());
1082 return CompilerOracle::should_not_inline(mh);
1083 }
1085 // ------------------------------------------------------------------
1086 // ciMethod::should_print_assembly
1087 //
1088 // Should the compiler print the generated code for this method?
1089 bool ciMethod::should_print_assembly() {
1090 check_is_loaded();
1091 VM_ENTRY_MARK;
1092 methodHandle mh(THREAD, get_Method());
1093 return CompilerOracle::should_print(mh);
1094 }
1096 // ------------------------------------------------------------------
1097 // ciMethod::break_at_execute
1098 //
1099 // Should the compiler insert a breakpoint into the generated code
1100 // method?
1101 bool ciMethod::break_at_execute() {
1102 check_is_loaded();
1103 VM_ENTRY_MARK;
1104 methodHandle mh(THREAD, get_Method());
1105 return CompilerOracle::should_break_at(mh);
1106 }
1108 // ------------------------------------------------------------------
1109 // ciMethod::has_option
1110 //
1111 bool ciMethod::has_option(const char* option) {
1112 check_is_loaded();
1113 VM_ENTRY_MARK;
1114 methodHandle mh(THREAD, get_Method());
1115 return CompilerOracle::has_option_string(mh, option);
1116 }
1118 // ------------------------------------------------------------------
1119 // ciMethod::has_option_value
1120 //
1121 template<typename T>
1122 bool ciMethod::has_option_value(const char* option, T& value) {
1123 check_is_loaded();
1124 VM_ENTRY_MARK;
1125 methodHandle mh(THREAD, get_Method());
1126 return CompilerOracle::has_option_value(mh, option, value);
1127 }
1128 // Explicit instantiation for all OptionTypes supported.
1129 template bool ciMethod::has_option_value<intx>(const char* option, intx& value);
1130 template bool ciMethod::has_option_value<uintx>(const char* option, uintx& value);
1131 template bool ciMethod::has_option_value<bool>(const char* option, bool& value);
1132 template bool ciMethod::has_option_value<ccstr>(const char* option, ccstr& value);
1134 // ------------------------------------------------------------------
1135 // ciMethod::can_be_compiled
1136 //
1137 // Have previous compilations of this method succeeded?
1138 bool ciMethod::can_be_compiled() {
1139 check_is_loaded();
1140 ciEnv* env = CURRENT_ENV;
1141 if (is_c1_compile(env->comp_level())) {
1142 return _is_c1_compilable;
1143 }
1144 return _is_c2_compilable;
1145 }
1147 // ------------------------------------------------------------------
1148 // ciMethod::set_not_compilable
1149 //
1150 // Tell the VM that this method cannot be compiled at all.
1151 void ciMethod::set_not_compilable(const char* reason) {
1152 check_is_loaded();
1153 VM_ENTRY_MARK;
1154 ciEnv* env = CURRENT_ENV;
1155 if (is_c1_compile(env->comp_level())) {
1156 _is_c1_compilable = false;
1157 } else {
1158 _is_c2_compilable = false;
1159 }
1160 get_Method()->set_not_compilable(env->comp_level(), true, reason);
1161 }
1163 // ------------------------------------------------------------------
1164 // ciMethod::can_be_osr_compiled
1165 //
1166 // Have previous compilations of this method succeeded?
1167 //
1168 // Implementation note: the VM does not currently keep track
1169 // of failed OSR compilations per bci. The entry_bci parameter
1170 // is currently unused.
1171 bool ciMethod::can_be_osr_compiled(int entry_bci) {
1172 check_is_loaded();
1173 VM_ENTRY_MARK;
1174 ciEnv* env = CURRENT_ENV;
1175 return !get_Method()->is_not_osr_compilable(env->comp_level());
1176 }
1178 // ------------------------------------------------------------------
1179 // ciMethod::has_compiled_code
1180 bool ciMethod::has_compiled_code() {
1181 return instructions_size() > 0;
1182 }
1184 int ciMethod::comp_level() {
1185 check_is_loaded();
1186 VM_ENTRY_MARK;
1187 nmethod* nm = get_Method()->code();
1188 if (nm != NULL) return nm->comp_level();
1189 return 0;
1190 }
1192 int ciMethod::highest_osr_comp_level() {
1193 check_is_loaded();
1194 VM_ENTRY_MARK;
1195 return get_Method()->highest_osr_comp_level();
1196 }
1198 // ------------------------------------------------------------------
1199 // ciMethod::code_size_for_inlining
1200 //
1201 // Code size for inlining decisions. This method returns a code
1202 // size of 1 for methods which has the ForceInline annotation.
1203 int ciMethod::code_size_for_inlining() {
1204 check_is_loaded();
1205 if (get_Method()->force_inline()) {
1206 return 1;
1207 }
1208 return code_size();
1209 }
1211 // ------------------------------------------------------------------
1212 // ciMethod::instructions_size
1213 //
1214 // This is a rough metric for "fat" methods, compared before inlining
1215 // with InlineSmallCode. The CodeBlob::code_size accessor includes
1216 // junk like exception handler, stubs, and constant table, which are
1217 // not highly relevant to an inlined method. So we use the more
1218 // specific accessor nmethod::insts_size.
1219 int ciMethod::instructions_size() {
1220 if (_instructions_size == -1) {
1221 GUARDED_VM_ENTRY(
1222 nmethod* code = get_Method()->code();
1223 if (code != NULL && (code->comp_level() == CompLevel_full_optimization)) {
1224 _instructions_size = code->insts_end() - code->verified_entry_point();
1225 } else {
1226 _instructions_size = 0;
1227 }
1228 );
1229 }
1230 return _instructions_size;
1231 }
1233 // ------------------------------------------------------------------
1234 // ciMethod::log_nmethod_identity
1235 void ciMethod::log_nmethod_identity(xmlStream* log) {
1236 GUARDED_VM_ENTRY(
1237 nmethod* code = get_Method()->code();
1238 if (code != NULL) {
1239 code->log_identity(log);
1240 }
1241 )
1242 }
1244 // ------------------------------------------------------------------
1245 // ciMethod::is_not_reached
1246 bool ciMethod::is_not_reached(int bci) {
1247 check_is_loaded();
1248 VM_ENTRY_MARK;
1249 return Interpreter::is_not_reached(
1250 methodHandle(THREAD, get_Method()), bci);
1251 }
1253 // ------------------------------------------------------------------
1254 // ciMethod::was_never_executed
1255 bool ciMethod::was_executed_more_than(int times) {
1256 VM_ENTRY_MARK;
1257 return get_Method()->was_executed_more_than(times);
1258 }
1260 // ------------------------------------------------------------------
1261 // ciMethod::has_unloaded_classes_in_signature
1262 bool ciMethod::has_unloaded_classes_in_signature() {
1263 VM_ENTRY_MARK;
1264 {
1265 EXCEPTION_MARK;
1266 methodHandle m(THREAD, get_Method());
1267 bool has_unloaded = Method::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD);
1268 if( HAS_PENDING_EXCEPTION ) {
1269 CLEAR_PENDING_EXCEPTION;
1270 return true; // Declare that we may have unloaded classes
1271 }
1272 return has_unloaded;
1273 }
1274 }
1276 // ------------------------------------------------------------------
1277 // ciMethod::is_klass_loaded
1278 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const {
1279 VM_ENTRY_MARK;
1280 return get_Method()->is_klass_loaded(refinfo_index, must_be_resolved);
1281 }
1283 // ------------------------------------------------------------------
1284 // ciMethod::check_call
1285 bool ciMethod::check_call(int refinfo_index, bool is_static) const {
1286 // This method is used only in C2 from InlineTree::ok_to_inline,
1287 // and is only used under -Xcomp or -XX:CompileTheWorld.
1288 // It appears to fail when applied to an invokeinterface call site.
1289 // FIXME: Remove this method and resolve_method_statically; refactor to use the other LinkResolver entry points.
1290 VM_ENTRY_MARK;
1291 {
1292 EXCEPTION_MARK;
1293 HandleMark hm(THREAD);
1294 constantPoolHandle pool (THREAD, get_Method()->constants());
1295 methodHandle spec_method;
1296 KlassHandle spec_klass;
1297 Bytecodes::Code code = (is_static ? Bytecodes::_invokestatic : Bytecodes::_invokevirtual);
1298 LinkResolver::resolve_method_statically(spec_method, spec_klass, code, pool, refinfo_index, THREAD);
1299 if (HAS_PENDING_EXCEPTION) {
1300 CLEAR_PENDING_EXCEPTION;
1301 return false;
1302 } else {
1303 return (spec_method->is_static() == is_static);
1304 }
1305 }
1306 return false;
1307 }
1309 // ------------------------------------------------------------------
1310 // ciMethod::print_codes
1311 //
1312 // Print the bytecodes for this method.
1313 void ciMethod::print_codes_on(outputStream* st) {
1314 check_is_loaded();
1315 GUARDED_VM_ENTRY(get_Method()->print_codes_on(st);)
1316 }
1319 #define FETCH_FLAG_FROM_VM(flag_accessor) { \
1320 check_is_loaded(); \
1321 VM_ENTRY_MARK; \
1322 return get_Method()->flag_accessor(); \
1323 }
1325 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); }
1326 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); }
1327 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); }
1328 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); }
1329 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); }
1330 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); }
1332 bool ciMethod::is_boxing_method() const {
1333 if (holder()->is_box_klass()) {
1334 switch (intrinsic_id()) {
1335 case vmIntrinsics::_Boolean_valueOf:
1336 case vmIntrinsics::_Byte_valueOf:
1337 case vmIntrinsics::_Character_valueOf:
1338 case vmIntrinsics::_Short_valueOf:
1339 case vmIntrinsics::_Integer_valueOf:
1340 case vmIntrinsics::_Long_valueOf:
1341 case vmIntrinsics::_Float_valueOf:
1342 case vmIntrinsics::_Double_valueOf:
1343 return true;
1344 default:
1345 return false;
1346 }
1347 }
1348 return false;
1349 }
1351 bool ciMethod::is_unboxing_method() const {
1352 if (holder()->is_box_klass()) {
1353 switch (intrinsic_id()) {
1354 case vmIntrinsics::_booleanValue:
1355 case vmIntrinsics::_byteValue:
1356 case vmIntrinsics::_charValue:
1357 case vmIntrinsics::_shortValue:
1358 case vmIntrinsics::_intValue:
1359 case vmIntrinsics::_longValue:
1360 case vmIntrinsics::_floatValue:
1361 case vmIntrinsics::_doubleValue:
1362 return true;
1363 default:
1364 return false;
1365 }
1366 }
1367 return false;
1368 }
1370 BCEscapeAnalyzer *ciMethod::get_bcea() {
1371 #ifdef COMPILER2
1372 if (_bcea == NULL) {
1373 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL);
1374 }
1375 return _bcea;
1376 #else // COMPILER2
1377 ShouldNotReachHere();
1378 return NULL;
1379 #endif // COMPILER2
1380 }
1382 ciMethodBlocks *ciMethod::get_method_blocks() {
1383 Arena *arena = CURRENT_ENV->arena();
1384 if (_method_blocks == NULL) {
1385 _method_blocks = new (arena) ciMethodBlocks(arena, this);
1386 }
1387 return _method_blocks;
1388 }
1390 #undef FETCH_FLAG_FROM_VM
1392 void ciMethod::dump_name_as_ascii(outputStream* st) {
1393 Method* method = get_Method();
1394 st->print("%s %s %s",
1395 method->klass_name()->as_quoted_ascii(),
1396 method->name()->as_quoted_ascii(),
1397 method->signature()->as_quoted_ascii());
1398 }
1400 void ciMethod::dump_replay_data(outputStream* st) {
1401 ResourceMark rm;
1402 Method* method = get_Method();
1403 MethodCounters* mcs = method->method_counters();
1404 st->print("ciMethod ");
1405 dump_name_as_ascii(st);
1406 st->print_cr(" %d %d %d %d %d",
1407 mcs == NULL ? 0 : mcs->invocation_counter()->raw_counter(),
1408 mcs == NULL ? 0 : mcs->backedge_counter()->raw_counter(),
1409 interpreter_invocation_count(),
1410 interpreter_throwout_count(),
1411 _instructions_size);
1412 }
1414 // ------------------------------------------------------------------
1415 // ciMethod::print_codes
1416 //
1417 // Print a range of the bytecodes for this method.
1418 void ciMethod::print_codes_on(int from, int to, outputStream* st) {
1419 check_is_loaded();
1420 GUARDED_VM_ENTRY(get_Method()->print_codes_on(from, to, st);)
1421 }
1423 // ------------------------------------------------------------------
1424 // ciMethod::print_name
1425 //
1426 // Print the name of this method, including signature and some flags.
1427 void ciMethod::print_name(outputStream* st) {
1428 check_is_loaded();
1429 GUARDED_VM_ENTRY(get_Method()->print_name(st);)
1430 }
1432 // ------------------------------------------------------------------
1433 // ciMethod::print_short_name
1434 //
1435 // Print the name of this method, without signature.
1436 void ciMethod::print_short_name(outputStream* st) {
1437 if (is_loaded()) {
1438 GUARDED_VM_ENTRY(get_Method()->print_short_name(st););
1439 } else {
1440 // Fall back if method is not loaded.
1441 holder()->print_name_on(st);
1442 st->print("::");
1443 name()->print_symbol_on(st);
1444 if (WizardMode)
1445 signature()->as_symbol()->print_symbol_on(st);
1446 }
1447 }
1449 // ------------------------------------------------------------------
1450 // ciMethod::print_impl
1451 //
1452 // Implementation of the print method.
1453 void ciMethod::print_impl(outputStream* st) {
1454 ciMetadata::print_impl(st);
1455 st->print(" name=");
1456 name()->print_symbol_on(st);
1457 st->print(" holder=");
1458 holder()->print_name_on(st);
1459 st->print(" signature=");
1460 signature()->as_symbol()->print_symbol_on(st);
1461 if (is_loaded()) {
1462 st->print(" loaded=true");
1463 st->print(" arg_size=%d", arg_size());
1464 st->print(" flags=");
1465 flags().print_member_flags(st);
1466 } else {
1467 st->print(" loaded=false");
1468 }
1469 }