Mercurial > hg > graal-jvmci-8
annotate src/share/vm/ci/ciMethod.cpp @ 1818:c93c652551b5
6986944: JSR 292 assert(caller_nm->is_method_handle_return(caller_frame.pc())) failed: must be MH call site
Reviewed-by: never, kvn
author | twisti |
---|---|
date | Fri, 24 Sep 2010 03:51:43 -0700 |
parents | d5d065957597 |
children | 3f9a70eb8b1f |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1251
diff
changeset
|
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1251
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1251
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1251
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_ciMethod.cpp.incl" | |
27 | |
28 // ciMethod | |
29 // | |
30 // This class represents a methodOop in the HotSpot virtual | |
31 // machine. | |
32 | |
33 | |
34 // ------------------------------------------------------------------ | |
35 // ciMethod::ciMethod | |
36 // | |
37 // Loaded method. | |
38 ciMethod::ciMethod(methodHandle h_m) : ciObject(h_m) { | |
39 assert(h_m() != NULL, "no null method"); | |
40 | |
41 // These fields are always filled in in loaded methods. | |
42 _flags = ciFlags(h_m()->access_flags()); | |
43 | |
44 // Easy to compute, so fill them in now. | |
45 _max_stack = h_m()->max_stack(); | |
46 _max_locals = h_m()->max_locals(); | |
47 _code_size = h_m()->code_size(); | |
48 _intrinsic_id = h_m()->intrinsic_id(); | |
49 _handler_count = h_m()->exception_table()->length() / 4; | |
50 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes(); | |
51 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching(); | |
1783 | 52 _is_c1_compilable = !h_m()->is_not_c1_compilable(); |
53 _is_c2_compilable = !h_m()->is_not_c2_compilable(); | |
0 | 54 // Lazy fields, filled in on demand. Require allocation. |
55 _code = NULL; | |
56 _exception_handlers = NULL; | |
57 _liveness = NULL; | |
58 _method_blocks = NULL; | |
1692 | 59 #if defined(COMPILER2) || defined(SHARK) |
0 | 60 _flow = NULL; |
1648
8099e71601df
6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
kvn
parents:
1579
diff
changeset
|
61 _bcea = NULL; |
1692 | 62 #endif // COMPILER2 || SHARK |
0 | 63 |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
710
diff
changeset
|
64 ciEnv *env = CURRENT_ENV; |
1783 | 65 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) { |
0 | 66 // 6328518 check hotswap conditions under the right lock. |
67 MutexLocker locker(Compile_lock); | |
68 if (Dependencies::check_evol_method(h_m()) != NULL) { | |
1783 | 69 _is_c1_compilable = false; |
70 _is_c2_compilable = false; | |
0 | 71 } |
72 } else { | |
73 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
74 } | |
75 | |
76 if (instanceKlass::cast(h_m()->method_holder())->is_linked()) { | |
77 _can_be_statically_bound = h_m()->can_be_statically_bound(); | |
78 } else { | |
79 // Have to use a conservative value in this case. | |
80 _can_be_statically_bound = false; | |
81 } | |
82 | |
83 // Adjust the definition of this condition to be more useful: | |
84 // %%% take these conditions into account in vtable generation | |
85 if (!_can_be_statically_bound && h_m()->is_private()) | |
86 _can_be_statically_bound = true; | |
87 if (_can_be_statically_bound && h_m()->is_abstract()) | |
88 _can_be_statically_bound = false; | |
89 | |
90 // generating _signature may allow GC and therefore move m. | |
91 // These fields are always filled in. | |
92 _name = env->get_object(h_m()->name())->as_symbol(); | |
93 _holder = env->get_object(h_m()->method_holder())->as_instance_klass(); | |
94 ciSymbol* sig_symbol = env->get_object(h_m()->signature())->as_symbol(); | |
95 _signature = new (env->arena()) ciSignature(_holder, sig_symbol); | |
96 _method_data = NULL; | |
97 // Take a snapshot of these values, so they will be commensurate with the MDO. | |
1783 | 98 if (ProfileInterpreter || TieredCompilation) { |
0 | 99 int invcnt = h_m()->interpreter_invocation_count(); |
100 // if the value overflowed report it as max int | |
101 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ; | |
102 _interpreter_throwout_count = h_m()->interpreter_throwout_count(); | |
103 } else { | |
104 _interpreter_invocation_count = 0; | |
105 _interpreter_throwout_count = 0; | |
106 } | |
107 if (_interpreter_invocation_count == 0) | |
108 _interpreter_invocation_count = 1; | |
109 } | |
110 | |
111 | |
112 // ------------------------------------------------------------------ | |
113 // ciMethod::ciMethod | |
114 // | |
115 // Unloaded method. | |
116 ciMethod::ciMethod(ciInstanceKlass* holder, | |
117 ciSymbol* name, | |
118 ciSymbol* signature) : ciObject(ciMethodKlass::make()) { | |
119 // These fields are always filled in. | |
120 _name = name; | |
121 _holder = holder; | |
122 _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, signature); | |
123 _intrinsic_id = vmIntrinsics::_none; | |
124 _liveness = NULL; | |
125 _can_be_statically_bound = false; | |
126 _method_blocks = NULL; | |
127 _method_data = NULL; | |
1692 | 128 #if defined(COMPILER2) || defined(SHARK) |
0 | 129 _flow = NULL; |
1648
8099e71601df
6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
kvn
parents:
1579
diff
changeset
|
130 _bcea = NULL; |
1692 | 131 #endif // COMPILER2 || SHARK |
0 | 132 } |
133 | |
134 | |
135 // ------------------------------------------------------------------ | |
136 // ciMethod::load_code | |
137 // | |
138 // Load the bytecodes and exception handler table for this method. | |
139 void ciMethod::load_code() { | |
140 VM_ENTRY_MARK; | |
141 assert(is_loaded(), "only loaded methods have code"); | |
142 | |
143 methodOop me = get_methodOop(); | |
144 Arena* arena = CURRENT_THREAD_ENV->arena(); | |
145 | |
146 // Load the bytecodes. | |
147 _code = (address)arena->Amalloc(code_size()); | |
148 memcpy(_code, me->code_base(), code_size()); | |
149 | |
150 // Revert any breakpoint bytecodes in ci's copy | |
27
1f530c629c7d
6498878: client compiler crashes on windows when dealing with breakpoint instructions
kvn
parents:
0
diff
changeset
|
151 if (me->number_of_breakpoints() > 0) { |
0 | 152 BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints(); |
153 for (; bp != NULL; bp = bp->next()) { | |
154 if (bp->match(me)) { | |
155 code_at_put(bp->bci(), bp->orig_bytecode()); | |
156 } | |
157 } | |
158 } | |
159 | |
160 // And load the exception table. | |
161 typeArrayOop exc_table = me->exception_table(); | |
162 | |
163 // Allocate one extra spot in our list of exceptions. This | |
164 // last entry will be used to represent the possibility that | |
165 // an exception escapes the method. See ciExceptionHandlerStream | |
166 // for details. | |
167 _exception_handlers = | |
168 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) | |
169 * (_handler_count + 1)); | |
170 if (_handler_count > 0) { | |
171 for (int i=0; i<_handler_count; i++) { | |
172 int base = i*4; | |
173 _exception_handlers[i] = new (arena) ciExceptionHandler( | |
174 holder(), | |
175 /* start */ exc_table->int_at(base), | |
176 /* limit */ exc_table->int_at(base+1), | |
177 /* goto pc */ exc_table->int_at(base+2), | |
178 /* cp index */ exc_table->int_at(base+3)); | |
179 } | |
180 } | |
181 | |
182 // Put an entry at the end of our list to represent the possibility | |
183 // of exceptional exit. | |
184 _exception_handlers[_handler_count] = | |
185 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); | |
186 | |
187 if (CIPrintMethodCodes) { | |
188 print_codes(); | |
189 } | |
190 } | |
191 | |
192 | |
193 // ------------------------------------------------------------------ | |
194 // ciMethod::has_linenumber_table | |
195 // | |
196 // length unknown until decompression | |
197 bool ciMethod::has_linenumber_table() const { | |
198 check_is_loaded(); | |
199 VM_ENTRY_MARK; | |
200 return get_methodOop()->has_linenumber_table(); | |
201 } | |
202 | |
203 | |
204 // ------------------------------------------------------------------ | |
205 // ciMethod::compressed_linenumber_table | |
206 u_char* ciMethod::compressed_linenumber_table() const { | |
207 check_is_loaded(); | |
208 VM_ENTRY_MARK; | |
209 return get_methodOop()->compressed_linenumber_table(); | |
210 } | |
211 | |
212 | |
213 // ------------------------------------------------------------------ | |
214 // ciMethod::line_number_from_bci | |
215 int ciMethod::line_number_from_bci(int bci) const { | |
216 check_is_loaded(); | |
217 VM_ENTRY_MARK; | |
218 return get_methodOop()->line_number_from_bci(bci); | |
219 } | |
220 | |
221 | |
222 // ------------------------------------------------------------------ | |
223 // ciMethod::vtable_index | |
224 // | |
225 // Get the position of this method's entry in the vtable, if any. | |
226 int ciMethod::vtable_index() { | |
227 check_is_loaded(); | |
228 assert(holder()->is_linked(), "must be linked"); | |
229 VM_ENTRY_MARK; | |
230 return get_methodOop()->vtable_index(); | |
231 } | |
232 | |
233 | |
1692 | 234 #ifdef SHARK |
235 // ------------------------------------------------------------------ | |
236 // ciMethod::itable_index | |
237 // | |
238 // Get the position of this method's entry in the itable, if any. | |
239 int ciMethod::itable_index() { | |
240 check_is_loaded(); | |
241 assert(holder()->is_linked(), "must be linked"); | |
242 VM_ENTRY_MARK; | |
243 return klassItable::compute_itable_index(get_methodOop()); | |
244 } | |
245 #endif // SHARK | |
246 | |
247 | |
0 | 248 // ------------------------------------------------------------------ |
249 // ciMethod::native_entry | |
250 // | |
251 // Get the address of this method's native code, if any. | |
252 address ciMethod::native_entry() { | |
253 check_is_loaded(); | |
254 assert(flags().is_native(), "must be native method"); | |
255 VM_ENTRY_MARK; | |
256 methodOop method = get_methodOop(); | |
257 address entry = method->native_function(); | |
258 assert(entry != NULL, "must be valid entry point"); | |
259 return entry; | |
260 } | |
261 | |
262 | |
263 // ------------------------------------------------------------------ | |
264 // ciMethod::interpreter_entry | |
265 // | |
266 // Get the entry point for running this method in the interpreter. | |
267 address ciMethod::interpreter_entry() { | |
268 check_is_loaded(); | |
269 VM_ENTRY_MARK; | |
270 methodHandle mh(THREAD, get_methodOop()); | |
271 return Interpreter::entry_for_method(mh); | |
272 } | |
273 | |
274 | |
275 // ------------------------------------------------------------------ | |
276 // ciMethod::uses_balanced_monitors | |
277 // | |
278 // Does this method use monitors in a strict stack-disciplined manner? | |
279 bool ciMethod::has_balanced_monitors() { | |
280 check_is_loaded(); | |
281 if (_balanced_monitors) return true; | |
282 | |
283 // Analyze the method to see if monitors are used properly. | |
284 VM_ENTRY_MARK; | |
285 methodHandle method(THREAD, get_methodOop()); | |
286 assert(method->has_monitor_bytecodes(), "should have checked this"); | |
287 | |
288 // Check to see if a previous compilation computed the | |
289 // monitor-matching analysis. | |
290 if (method->guaranteed_monitor_matching()) { | |
291 _balanced_monitors = true; | |
292 return true; | |
293 } | |
294 | |
295 { | |
296 EXCEPTION_MARK; | |
297 ResourceMark rm(THREAD); | |
298 GeneratePairingInfo gpi(method); | |
299 gpi.compute_map(CATCH); | |
300 if (!gpi.monitor_safe()) { | |
301 return false; | |
302 } | |
303 method->set_guaranteed_monitor_matching(); | |
304 _balanced_monitors = true; | |
305 } | |
306 return true; | |
307 } | |
308 | |
309 | |
310 // ------------------------------------------------------------------ | |
311 // ciMethod::get_flow_analysis | |
312 ciTypeFlow* ciMethod::get_flow_analysis() { | |
1692 | 313 #if defined(COMPILER2) || defined(SHARK) |
0 | 314 if (_flow == NULL) { |
315 ciEnv* env = CURRENT_ENV; | |
316 _flow = new (env->arena()) ciTypeFlow(env, this); | |
317 _flow->do_flow(); | |
318 } | |
319 return _flow; | |
1692 | 320 #else // COMPILER2 || SHARK |
0 | 321 ShouldNotReachHere(); |
322 return NULL; | |
1692 | 323 #endif // COMPILER2 || SHARK |
0 | 324 } |
325 | |
326 | |
327 // ------------------------------------------------------------------ | |
328 // ciMethod::get_osr_flow_analysis | |
329 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { | |
1692 | 330 #if defined(COMPILER2) || defined(SHARK) |
0 | 331 // OSR entry points are always place after a call bytecode of some sort |
332 assert(osr_bci >= 0, "must supply valid OSR entry point"); | |
333 ciEnv* env = CURRENT_ENV; | |
334 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); | |
335 flow->do_flow(); | |
336 return flow; | |
1692 | 337 #else // COMPILER2 || SHARK |
0 | 338 ShouldNotReachHere(); |
339 return NULL; | |
1692 | 340 #endif // COMPILER2 || SHARK |
0 | 341 } |
342 | |
343 // ------------------------------------------------------------------ | |
991 | 344 // ciMethod::raw_liveness_at_bci |
0 | 345 // |
346 // Which local variables are live at a specific bci? | |
991 | 347 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
0 | 348 check_is_loaded(); |
349 if (_liveness == NULL) { | |
350 // Create the liveness analyzer. | |
351 Arena* arena = CURRENT_ENV->arena(); | |
352 _liveness = new (arena) MethodLiveness(arena, this); | |
353 _liveness->compute_liveness(); | |
354 } | |
991 | 355 return _liveness->get_liveness_at(bci); |
356 } | |
357 | |
358 // ------------------------------------------------------------------ | |
359 // ciMethod::liveness_at_bci | |
360 // | |
361 // Which local variables are live at a specific bci? When debugging | |
362 // will return true for all locals in some cases to improve debug | |
363 // information. | |
364 MethodLivenessResult ciMethod::liveness_at_bci(int bci) { | |
365 MethodLivenessResult result = raw_liveness_at_bci(bci); | |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
710
diff
changeset
|
366 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
0 | 367 // Keep all locals live for the user's edification and amusement. |
368 result.at_put_range(0, result.size(), true); | |
369 } | |
370 return result; | |
371 } | |
372 | |
373 // ciMethod::live_local_oops_at_bci | |
374 // | |
375 // find all the live oops in the locals array for a particular bci | |
376 // Compute what the interpreter believes by using the interpreter | |
377 // oopmap generator. This is used as a double check during osr to | |
378 // guard against conservative result from MethodLiveness making us | |
379 // think a dead oop is live. MethodLiveness is conservative in the | |
380 // sense that it may consider locals to be live which cannot be live, | |
381 // like in the case where a local could contain an oop or a primitive | |
382 // along different paths. In that case the local must be dead when | |
383 // those paths merge. Since the interpreter's viewpoint is used when | |
384 // gc'ing an interpreter frame we need to use its viewpoint during | |
385 // OSR when loading the locals. | |
386 | |
387 BitMap ciMethod::live_local_oops_at_bci(int bci) { | |
388 VM_ENTRY_MARK; | |
389 InterpreterOopMap mask; | |
390 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask); | |
391 int mask_size = max_locals(); | |
392 BitMap result(mask_size); | |
393 result.clear(); | |
394 int i; | |
395 for (i = 0; i < mask_size ; i++ ) { | |
396 if (mask.is_oop(i)) result.set_bit(i); | |
397 } | |
398 return result; | |
399 } | |
400 | |
401 | |
402 #ifdef COMPILER1 | |
403 // ------------------------------------------------------------------ | |
404 // ciMethod::bci_block_start | |
405 // | |
406 // Marks all bcis where a new basic block starts | |
407 const BitMap ciMethod::bci_block_start() { | |
408 check_is_loaded(); | |
409 if (_liveness == NULL) { | |
410 // Create the liveness analyzer. | |
411 Arena* arena = CURRENT_ENV->arena(); | |
412 _liveness = new (arena) MethodLiveness(arena, this); | |
413 _liveness->compute_liveness(); | |
414 } | |
415 | |
416 return _liveness->get_bci_block_start(); | |
417 } | |
418 #endif // COMPILER1 | |
419 | |
420 | |
421 // ------------------------------------------------------------------ | |
422 // ciMethod::call_profile_at_bci | |
423 // | |
424 // Get the ciCallProfile for the invocation of this method. | |
425 // Also reports receiver types for non-call type checks (if TypeProfileCasts). | |
426 ciCallProfile ciMethod::call_profile_at_bci(int bci) { | |
427 ResourceMark rm; | |
428 ciCallProfile result; | |
429 if (method_data() != NULL && method_data()->is_mature()) { | |
430 ciProfileData* data = method_data()->bci_to_data(bci); | |
431 if (data != NULL && data->is_CounterData()) { | |
432 // Every profiled call site has a counter. | |
433 int count = data->as_CounterData()->count(); | |
434 | |
435 if (!data->is_ReceiverTypeData()) { | |
436 result._receiver_count[0] = 0; // that's a definite zero | |
437 } else { // ReceiverTypeData is a subclass of CounterData | |
438 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); | |
439 // In addition, virtual call sites have receiver type information | |
440 int receivers_count_total = 0; | |
441 int morphism = 0; | |
1783 | 442 // Precompute morphism for the possible fixup |
0 | 443 for (uint i = 0; i < call->row_limit(); i++) { |
444 ciKlass* receiver = call->receiver(i); | |
445 if (receiver == NULL) continue; | |
1783 | 446 morphism++; |
447 } | |
448 int epsilon = 0; | |
449 if (TieredCompilation && ProfileInterpreter) { | |
450 // Interpreter and C1 treat final and special invokes differently. | |
451 // C1 will record a type, whereas the interpreter will just | |
452 // increment the count. Detect this case. | |
453 if (morphism == 1 && count > 0) { | |
454 epsilon = count; | |
455 count = 0; | |
456 } | |
457 } | |
458 for (uint i = 0; i < call->row_limit(); i++) { | |
459 ciKlass* receiver = call->receiver(i); | |
460 if (receiver == NULL) continue; | |
461 int rcount = call->receiver_count(i) + epsilon; | |
0 | 462 if (rcount == 0) rcount = 1; // Should be valid value |
463 receivers_count_total += rcount; | |
464 // Add the receiver to result data. | |
465 result.add_receiver(receiver, rcount); | |
466 // If we extend profiling to record methods, | |
467 // we will set result._method also. | |
468 } | |
469 // Determine call site's morphism. | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
470 // The call site count is 0 with known morphism (onlt 1 or 2 receivers) |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
471 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof. |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
472 // The call site count is > 0 in the case of a polymorphic virtual call. |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
473 if (morphism > 0 && morphism == result._limit) { |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
474 // The morphism <= MorphismLimit. |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
475 if ((morphism < ciCallProfile::MorphismLimit) || |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
476 (morphism == ciCallProfile::MorphismLimit && count == 0)) { |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
477 #ifdef ASSERT |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
478 if (count > 0) { |
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1206
diff
changeset
|
479 this->print_short_name(tty); |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1206
diff
changeset
|
480 tty->print_cr(" @ bci:%d", bci); |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
481 this->print_codes(); |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
482 assert(false, "this call site should not be polymorphic"); |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
483 } |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
484 #endif |
0 | 485 result._morphism = morphism; |
486 } | |
487 } | |
488 // Make the count consistent if this is a call profile. If count is | |
489 // zero or less, presume that this is a typecheck profile and | |
490 // do nothing. Otherwise, increase count to be the sum of all | |
491 // receiver's counts. | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
492 if (count >= 0) { |
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1152
diff
changeset
|
493 count += receivers_count_total; |
0 | 494 } |
495 } | |
496 result._count = count; | |
497 } | |
498 } | |
499 return result; | |
500 } | |
501 | |
502 // ------------------------------------------------------------------ | |
503 // Add new receiver and sort data by receiver's profile count. | |
504 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { | |
505 // Add new receiver and sort data by receiver's counts when we have space | |
506 // for it otherwise replace the less called receiver (less called receiver | |
507 // is placed to the last array element which is not used). | |
508 // First array's element contains most called receiver. | |
509 int i = _limit; | |
510 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { | |
511 _receiver[i] = _receiver[i-1]; | |
512 _receiver_count[i] = _receiver_count[i-1]; | |
513 } | |
514 _receiver[i] = receiver; | |
515 _receiver_count[i] = receiver_count; | |
516 if (_limit < MorphismLimit) _limit++; | |
517 } | |
518 | |
519 // ------------------------------------------------------------------ | |
520 // ciMethod::find_monomorphic_target | |
521 // | |
522 // Given a certain calling environment, find the monomorphic target | |
523 // for the call. Return NULL if the call is not monomorphic in | |
524 // its calling environment, or if there are only abstract methods. | |
525 // The returned method is never abstract. | |
526 // Note: If caller uses a non-null result, it must inform dependencies | |
527 // via assert_unique_concrete_method or assert_leaf_type. | |
528 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, | |
529 ciInstanceKlass* callee_holder, | |
530 ciInstanceKlass* actual_recv) { | |
531 check_is_loaded(); | |
532 | |
533 if (actual_recv->is_interface()) { | |
534 // %%% We cannot trust interface types, yet. See bug 6312651. | |
535 return NULL; | |
536 } | |
537 | |
538 ciMethod* root_m = resolve_invoke(caller, actual_recv); | |
539 if (root_m == NULL) { | |
540 // Something went wrong looking up the actual receiver method. | |
541 return NULL; | |
542 } | |
543 assert(!root_m->is_abstract(), "resolve_invoke promise"); | |
544 | |
545 // Make certain quick checks even if UseCHA is false. | |
546 | |
547 // Is it private or final? | |
548 if (root_m->can_be_statically_bound()) { | |
549 return root_m; | |
550 } | |
551 | |
552 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { | |
553 // Easy case. There is no other place to put a method, so don't bother | |
554 // to go through the VM_ENTRY_MARK and all the rest. | |
555 return root_m; | |
556 } | |
557 | |
558 // Array methods (clone, hashCode, etc.) are always statically bound. | |
559 // If we were to see an array type here, we'd return root_m. | |
560 // However, this method processes only ciInstanceKlasses. (See 4962591.) | |
561 // The inline_native_clone intrinsic narrows Object to T[] properly, | |
562 // so there is no need to do the same job here. | |
563 | |
564 if (!UseCHA) return NULL; | |
565 | |
566 VM_ENTRY_MARK; | |
567 | |
568 methodHandle target; | |
569 { | |
570 MutexLocker locker(Compile_lock); | |
571 klassOop context = actual_recv->get_klassOop(); | |
572 target = Dependencies::find_unique_concrete_method(context, | |
573 root_m->get_methodOop()); | |
574 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. | |
575 } | |
576 | |
577 #ifndef PRODUCT | |
578 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) { | |
579 tty->print("found a non-root unique target method"); | |
580 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name()); | |
581 tty->print(" method = "); | |
582 target->print_short_name(tty); | |
583 tty->cr(); | |
584 } | |
585 #endif //PRODUCT | |
586 | |
587 if (target() == NULL) { | |
588 return NULL; | |
589 } | |
590 if (target() == root_m->get_methodOop()) { | |
591 return root_m; | |
592 } | |
593 if (!root_m->is_public() && | |
594 !root_m->is_protected()) { | |
595 // If we are going to reason about inheritance, it's easiest | |
596 // if the method in question is public, protected, or private. | |
597 // If the answer is not root_m, it is conservatively correct | |
598 // to return NULL, even if the CHA encountered irrelevant | |
599 // methods in other packages. | |
600 // %%% TO DO: Work out logic for package-private methods | |
601 // with the same name but different vtable indexes. | |
602 return NULL; | |
603 } | |
604 return CURRENT_THREAD_ENV->get_object(target())->as_method(); | |
605 } | |
606 | |
607 // ------------------------------------------------------------------ | |
608 // ciMethod::resolve_invoke | |
609 // | |
610 // Given a known receiver klass, find the target for the call. | |
611 // Return NULL if the call has no target or the target is abstract. | |
612 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { | |
613 check_is_loaded(); | |
614 VM_ENTRY_MARK; | |
615 | |
616 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
617 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop()); | |
618 KlassHandle h_resolved (THREAD, holder()->get_klassOop()); | |
619 symbolHandle h_name (THREAD, name()->get_symbolOop()); | |
620 symbolHandle h_signature (THREAD, signature()->get_symbolOop()); | |
621 | |
622 methodHandle m; | |
623 // Only do exact lookup if receiver klass has been linked. Otherwise, | |
624 // the vtable has not been setup, and the LinkResolver will fail. | |
625 if (h_recv->oop_is_javaArray() | |
626 || | |
627 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { | |
628 if (holder()->is_interface()) { | |
629 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
630 } else { | |
631 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
632 } | |
633 } | |
634 | |
635 if (m.is_null()) { | |
636 // Return NULL only if there was a problem with lookup (uninitialized class, etc.) | |
637 return NULL; | |
638 } | |
639 | |
640 ciMethod* result = this; | |
641 if (m() != get_methodOop()) { | |
642 result = CURRENT_THREAD_ENV->get_object(m())->as_method(); | |
643 } | |
644 | |
645 // Don't return abstract methods because they aren't | |
646 // optimizable or interesting. | |
647 if (result->is_abstract()) { | |
648 return NULL; | |
649 } else { | |
650 return result; | |
651 } | |
652 } | |
653 | |
654 // ------------------------------------------------------------------ | |
655 // ciMethod::resolve_vtable_index | |
656 // | |
657 // Given a known receiver klass, find the vtable index for the call. | |
658 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown. | |
659 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { | |
660 check_is_loaded(); | |
661 | |
662 int vtable_index = methodOopDesc::invalid_vtable_index; | |
663 // Only do lookup if receiver klass has been linked. Otherwise, | |
664 // the vtable has not been setup, and the LinkResolver will fail. | |
665 if (!receiver->is_interface() | |
666 && (!receiver->is_instance_klass() || | |
667 receiver->as_instance_klass()->is_linked())) { | |
668 VM_ENTRY_MARK; | |
669 | |
670 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
671 KlassHandle h_recv (THREAD, receiver->get_klassOop()); | |
672 symbolHandle h_name (THREAD, name()->get_symbolOop()); | |
673 symbolHandle h_signature (THREAD, signature()->get_symbolOop()); | |
674 | |
675 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); | |
676 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
677 // A statically bound method. Return "no such index". | |
678 vtable_index = methodOopDesc::invalid_vtable_index; | |
679 } | |
680 } | |
681 | |
682 return vtable_index; | |
683 } | |
684 | |
685 // ------------------------------------------------------------------ | |
686 // ciMethod::interpreter_call_site_count | |
687 int ciMethod::interpreter_call_site_count(int bci) { | |
688 if (method_data() != NULL) { | |
689 ResourceMark rm; | |
690 ciProfileData* data = method_data()->bci_to_data(bci); | |
691 if (data != NULL && data->is_CounterData()) { | |
692 return scale_count(data->as_CounterData()->count()); | |
693 } | |
694 } | |
695 return -1; // unknown | |
696 } | |
697 | |
698 // ------------------------------------------------------------------ | |
699 // Adjust a CounterData count to be commensurate with | |
700 // interpreter_invocation_count. If the MDO exists for | |
701 // only 25% of the time the method exists, then the | |
702 // counts in the MDO should be scaled by 4X, so that | |
703 // they can be usefully and stably compared against the | |
704 // invocation counts in methods. | |
705 int ciMethod::scale_count(int count, float prof_factor) { | |
706 if (count > 0 && method_data() != NULL) { | |
1783 | 707 int counter_life; |
0 | 708 int method_life = interpreter_invocation_count(); |
1783 | 709 if (TieredCompilation) { |
710 // In tiered the MDO's life is measured directly, so just use the snapshotted counters | |
711 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count()); | |
712 } else { | |
713 int current_mileage = method_data()->current_mileage(); | |
714 int creation_mileage = method_data()->creation_mileage(); | |
715 counter_life = current_mileage - creation_mileage; | |
716 } | |
717 | |
0 | 718 // counter_life due to backedge_counter could be > method_life |
719 if (counter_life > method_life) | |
720 counter_life = method_life; | |
721 if (0 < counter_life && counter_life <= method_life) { | |
722 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); | |
723 count = (count > 0) ? count : 1; | |
724 } | |
725 } | |
726 return count; | |
727 } | |
728 | |
729 // ------------------------------------------------------------------ | |
710 | 730 // invokedynamic support |
1564 | 731 |
732 // ------------------------------------------------------------------ | |
733 // ciMethod::is_method_handle_invoke | |
710 | 734 // |
1662
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1648
diff
changeset
|
735 // Return true if the method is an instance of one of the two |
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1648
diff
changeset
|
736 // signature-polymorphic MethodHandle methods, invokeExact or invokeGeneric. |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
991
diff
changeset
|
737 bool ciMethod::is_method_handle_invoke() const { |
1818
c93c652551b5
6986944: JSR 292 assert(caller_nm->is_method_handle_return(caller_frame.pc())) failed: must be MH call site
twisti
parents:
1783
diff
changeset
|
738 if (!is_loaded()) { |
c93c652551b5
6986944: JSR 292 assert(caller_nm->is_method_handle_return(caller_frame.pc())) failed: must be MH call site
twisti
parents:
1783
diff
changeset
|
739 bool flag = (holder()->name() == ciSymbol::java_dyn_MethodHandle() && |
c93c652551b5
6986944: JSR 292 assert(caller_nm->is_method_handle_return(caller_frame.pc())) failed: must be MH call site
twisti
parents:
1783
diff
changeset
|
740 methodOopDesc::is_method_handle_invoke_name(name()->sid())); |
c93c652551b5
6986944: JSR 292 assert(caller_nm->is_method_handle_return(caller_frame.pc())) failed: must be MH call site
twisti
parents:
1783
diff
changeset
|
741 return flag; |
c93c652551b5
6986944: JSR 292 assert(caller_nm->is_method_handle_return(caller_frame.pc())) failed: must be MH call site
twisti
parents:
1783
diff
changeset
|
742 } |
1662
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1648
diff
changeset
|
743 VM_ENTRY_MARK; |
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1648
diff
changeset
|
744 return get_methodOop()->is_method_handle_invoke(); |
710 | 745 } |
746 | |
1564 | 747 // ------------------------------------------------------------------ |
748 // ciMethod::is_method_handle_adapter | |
749 // | |
750 // Return true if the method is a generated MethodHandle adapter. | |
1662
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1648
diff
changeset
|
751 // These are built by MethodHandleCompiler. |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1137
diff
changeset
|
752 bool ciMethod::is_method_handle_adapter() const { |
1662
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1648
diff
changeset
|
753 if (!is_loaded()) return false; |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1137
diff
changeset
|
754 VM_ENTRY_MARK; |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1137
diff
changeset
|
755 return get_methodOop()->is_method_handle_adapter(); |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1137
diff
changeset
|
756 } |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1137
diff
changeset
|
757 |
710 | 758 ciInstance* ciMethod::method_handle_type() { |
759 check_is_loaded(); | |
760 VM_ENTRY_MARK; | |
761 oop mtype = get_methodOop()->method_handle_type(); | |
762 return CURRENT_THREAD_ENV->get_object(mtype)->as_instance(); | |
763 } | |
764 | |
765 | |
766 // ------------------------------------------------------------------ | |
0 | 767 // ciMethod::build_method_data |
768 // | |
769 // Generate new methodDataOop objects at compile time. | |
770 void ciMethod::build_method_data(methodHandle h_m) { | |
771 EXCEPTION_CONTEXT; | |
772 if (is_native() || is_abstract() || h_m()->is_accessor()) return; | |
773 if (h_m()->method_data() == NULL) { | |
774 methodOopDesc::build_interpreter_method_data(h_m, THREAD); | |
775 if (HAS_PENDING_EXCEPTION) { | |
776 CLEAR_PENDING_EXCEPTION; | |
777 } | |
778 } | |
779 if (h_m()->method_data() != NULL) { | |
780 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
781 _method_data->load_data(); | |
782 } else { | |
783 _method_data = CURRENT_ENV->get_empty_methodData(); | |
784 } | |
785 } | |
786 | |
787 // public, retroactive version | |
788 void ciMethod::build_method_data() { | |
789 if (_method_data == NULL || _method_data->is_empty()) { | |
790 GUARDED_VM_ENTRY({ | |
791 build_method_data(get_methodOop()); | |
792 }); | |
793 } | |
794 } | |
795 | |
796 | |
797 // ------------------------------------------------------------------ | |
798 // ciMethod::method_data | |
799 // | |
800 ciMethodData* ciMethod::method_data() { | |
801 if (_method_data != NULL) { | |
802 return _method_data; | |
803 } | |
804 VM_ENTRY_MARK; | |
805 ciEnv* env = CURRENT_ENV; | |
806 Thread* my_thread = JavaThread::current(); | |
807 methodHandle h_m(my_thread, get_methodOop()); | |
808 | |
1783 | 809 // Create an MDO for the inlinee |
810 if (TieredCompilation && is_c1_compile(env->comp_level())) { | |
0 | 811 build_method_data(h_m); |
812 } | |
813 | |
814 if (h_m()->method_data() != NULL) { | |
815 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
816 _method_data->load_data(); | |
817 } else { | |
818 _method_data = CURRENT_ENV->get_empty_methodData(); | |
819 } | |
820 return _method_data; | |
821 | |
822 } | |
823 | |
824 | |
825 // ------------------------------------------------------------------ | |
826 // ciMethod::will_link | |
827 // | |
828 // Will this method link in a specific calling context? | |
829 bool ciMethod::will_link(ciKlass* accessing_klass, | |
830 ciKlass* declared_method_holder, | |
831 Bytecodes::Code bc) { | |
832 if (!is_loaded()) { | |
833 // Method lookup failed. | |
834 return false; | |
835 } | |
836 | |
837 // The link checks have been front-loaded into the get_method | |
838 // call. This method (ciMethod::will_link()) will be removed | |
839 // in the future. | |
840 | |
841 return true; | |
842 } | |
843 | |
844 // ------------------------------------------------------------------ | |
845 // ciMethod::should_exclude | |
846 // | |
847 // Should this method be excluded from compilation? | |
848 bool ciMethod::should_exclude() { | |
849 check_is_loaded(); | |
850 VM_ENTRY_MARK; | |
851 methodHandle mh(THREAD, get_methodOop()); | |
852 bool ignore; | |
853 return CompilerOracle::should_exclude(mh, ignore); | |
854 } | |
855 | |
856 // ------------------------------------------------------------------ | |
857 // ciMethod::should_inline | |
858 // | |
859 // Should this method be inlined during compilation? | |
860 bool ciMethod::should_inline() { | |
861 check_is_loaded(); | |
862 VM_ENTRY_MARK; | |
863 methodHandle mh(THREAD, get_methodOop()); | |
864 return CompilerOracle::should_inline(mh); | |
865 } | |
866 | |
867 // ------------------------------------------------------------------ | |
868 // ciMethod::should_not_inline | |
869 // | |
870 // Should this method be disallowed from inlining during compilation? | |
871 bool ciMethod::should_not_inline() { | |
872 check_is_loaded(); | |
873 VM_ENTRY_MARK; | |
874 methodHandle mh(THREAD, get_methodOop()); | |
875 return CompilerOracle::should_not_inline(mh); | |
876 } | |
877 | |
878 // ------------------------------------------------------------------ | |
879 // ciMethod::should_print_assembly | |
880 // | |
881 // Should the compiler print the generated code for this method? | |
882 bool ciMethod::should_print_assembly() { | |
883 check_is_loaded(); | |
884 VM_ENTRY_MARK; | |
885 methodHandle mh(THREAD, get_methodOop()); | |
886 return CompilerOracle::should_print(mh); | |
887 } | |
888 | |
889 // ------------------------------------------------------------------ | |
890 // ciMethod::break_at_execute | |
891 // | |
892 // Should the compiler insert a breakpoint into the generated code | |
893 // method? | |
894 bool ciMethod::break_at_execute() { | |
895 check_is_loaded(); | |
896 VM_ENTRY_MARK; | |
897 methodHandle mh(THREAD, get_methodOop()); | |
898 return CompilerOracle::should_break_at(mh); | |
899 } | |
900 | |
901 // ------------------------------------------------------------------ | |
902 // ciMethod::has_option | |
903 // | |
904 bool ciMethod::has_option(const char* option) { | |
905 check_is_loaded(); | |
906 VM_ENTRY_MARK; | |
907 methodHandle mh(THREAD, get_methodOop()); | |
908 return CompilerOracle::has_option_string(mh, option); | |
909 } | |
910 | |
911 // ------------------------------------------------------------------ | |
912 // ciMethod::can_be_compiled | |
913 // | |
914 // Have previous compilations of this method succeeded? | |
915 bool ciMethod::can_be_compiled() { | |
916 check_is_loaded(); | |
1783 | 917 ciEnv* env = CURRENT_ENV; |
918 if (is_c1_compile(env->comp_level())) { | |
919 return _is_c1_compilable; | |
920 } | |
921 return _is_c2_compilable; | |
0 | 922 } |
923 | |
924 // ------------------------------------------------------------------ | |
925 // ciMethod::set_not_compilable | |
926 // | |
927 // Tell the VM that this method cannot be compiled at all. | |
928 void ciMethod::set_not_compilable() { | |
929 check_is_loaded(); | |
930 VM_ENTRY_MARK; | |
1783 | 931 ciEnv* env = CURRENT_ENV; |
932 if (is_c1_compile(env->comp_level())) { | |
933 _is_c1_compilable = false; | |
934 } else { | |
935 _is_c2_compilable = false; | |
936 } | |
937 get_methodOop()->set_not_compilable(env->comp_level()); | |
0 | 938 } |
939 | |
940 // ------------------------------------------------------------------ | |
941 // ciMethod::can_be_osr_compiled | |
942 // | |
943 // Have previous compilations of this method succeeded? | |
944 // | |
945 // Implementation note: the VM does not currently keep track | |
946 // of failed OSR compilations per bci. The entry_bci parameter | |
947 // is currently unused. | |
948 bool ciMethod::can_be_osr_compiled(int entry_bci) { | |
949 check_is_loaded(); | |
950 VM_ENTRY_MARK; | |
1783 | 951 ciEnv* env = CURRENT_ENV; |
952 return !get_methodOop()->is_not_osr_compilable(env->comp_level()); | |
0 | 953 } |
954 | |
955 // ------------------------------------------------------------------ | |
956 // ciMethod::has_compiled_code | |
957 bool ciMethod::has_compiled_code() { | |
958 VM_ENTRY_MARK; | |
959 return get_methodOop()->code() != NULL; | |
960 } | |
961 | |
1783 | 962 int ciMethod::comp_level() { |
963 check_is_loaded(); | |
964 VM_ENTRY_MARK; | |
965 nmethod* nm = get_methodOop()->code(); | |
966 if (nm != NULL) return nm->comp_level(); | |
967 return 0; | |
968 } | |
969 | |
0 | 970 // ------------------------------------------------------------------ |
971 // ciMethod::instructions_size | |
1748 | 972 // |
973 // This is a rough metric for "fat" methods, compared before inlining | |
974 // with InlineSmallCode. The CodeBlob::code_size accessor includes | |
975 // junk like exception handler, stubs, and constant table, which are | |
976 // not highly relevant to an inlined method. So we use the more | |
977 // specific accessor nmethod::insts_size. | |
1783 | 978 int ciMethod::instructions_size(int comp_level) { |
0 | 979 GUARDED_VM_ENTRY( |
980 nmethod* code = get_methodOop()->code(); | |
1783 | 981 if (code != NULL && (comp_level == CompLevel_any || comp_level == code->comp_level())) { |
982 return code->code_end() - code->verified_entry_point(); | |
0 | 983 } |
1783 | 984 return 0; |
0 | 985 ) |
986 } | |
987 | |
988 // ------------------------------------------------------------------ | |
989 // ciMethod::log_nmethod_identity | |
990 void ciMethod::log_nmethod_identity(xmlStream* log) { | |
991 GUARDED_VM_ENTRY( | |
992 nmethod* code = get_methodOop()->code(); | |
993 if (code != NULL) { | |
994 code->log_identity(log); | |
995 } | |
996 ) | |
997 } | |
998 | |
999 // ------------------------------------------------------------------ | |
1000 // ciMethod::is_not_reached | |
1001 bool ciMethod::is_not_reached(int bci) { | |
1002 check_is_loaded(); | |
1003 VM_ENTRY_MARK; | |
1004 return Interpreter::is_not_reached( | |
1005 methodHandle(THREAD, get_methodOop()), bci); | |
1006 } | |
1007 | |
1008 // ------------------------------------------------------------------ | |
1009 // ciMethod::was_never_executed | |
1010 bool ciMethod::was_executed_more_than(int times) { | |
1011 VM_ENTRY_MARK; | |
1012 return get_methodOop()->was_executed_more_than(times); | |
1013 } | |
1014 | |
1015 // ------------------------------------------------------------------ | |
1016 // ciMethod::has_unloaded_classes_in_signature | |
1017 bool ciMethod::has_unloaded_classes_in_signature() { | |
1018 VM_ENTRY_MARK; | |
1019 { | |
1020 EXCEPTION_MARK; | |
1021 methodHandle m(THREAD, get_methodOop()); | |
1022 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); | |
1023 if( HAS_PENDING_EXCEPTION ) { | |
1024 CLEAR_PENDING_EXCEPTION; | |
1025 return true; // Declare that we may have unloaded classes | |
1026 } | |
1027 return has_unloaded; | |
1028 } | |
1029 } | |
1030 | |
1031 // ------------------------------------------------------------------ | |
1032 // ciMethod::is_klass_loaded | |
1033 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { | |
1034 VM_ENTRY_MARK; | |
1035 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved); | |
1036 } | |
1037 | |
1038 // ------------------------------------------------------------------ | |
1039 // ciMethod::check_call | |
1040 bool ciMethod::check_call(int refinfo_index, bool is_static) const { | |
1041 VM_ENTRY_MARK; | |
1042 { | |
1043 EXCEPTION_MARK; | |
1044 HandleMark hm(THREAD); | |
1045 constantPoolHandle pool (THREAD, get_methodOop()->constants()); | |
1046 methodHandle spec_method; | |
1047 KlassHandle spec_klass; | |
1048 LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD); | |
1049 if (HAS_PENDING_EXCEPTION) { | |
1050 CLEAR_PENDING_EXCEPTION; | |
1051 return false; | |
1052 } else { | |
1053 return (spec_method->is_static() == is_static); | |
1054 } | |
1055 } | |
1056 return false; | |
1057 } | |
1058 | |
1059 // ------------------------------------------------------------------ | |
1060 // ciMethod::print_codes | |
1061 // | |
1062 // Print the bytecodes for this method. | |
1063 void ciMethod::print_codes_on(outputStream* st) { | |
1064 check_is_loaded(); | |
1065 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);) | |
1066 } | |
1067 | |
1068 | |
1069 #define FETCH_FLAG_FROM_VM(flag_accessor) { \ | |
1070 check_is_loaded(); \ | |
1071 VM_ENTRY_MARK; \ | |
1072 return get_methodOop()->flag_accessor(); \ | |
1073 } | |
1074 | |
1075 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } | |
1076 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } | |
1077 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } | |
1078 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } | |
1079 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } | |
1080 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } | |
1081 | |
1082 BCEscapeAnalyzer *ciMethod::get_bcea() { | |
1648
8099e71601df
6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
kvn
parents:
1579
diff
changeset
|
1083 #ifdef COMPILER2 |
0 | 1084 if (_bcea == NULL) { |
1085 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); | |
1086 } | |
1087 return _bcea; | |
1648
8099e71601df
6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
kvn
parents:
1579
diff
changeset
|
1088 #else // COMPILER2 |
8099e71601df
6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
kvn
parents:
1579
diff
changeset
|
1089 ShouldNotReachHere(); |
8099e71601df
6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
kvn
parents:
1579
diff
changeset
|
1090 return NULL; |
8099e71601df
6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
kvn
parents:
1579
diff
changeset
|
1091 #endif // COMPILER2 |
0 | 1092 } |
1093 | |
1094 ciMethodBlocks *ciMethod::get_method_blocks() { | |
1095 Arena *arena = CURRENT_ENV->arena(); | |
1096 if (_method_blocks == NULL) { | |
1097 _method_blocks = new (arena) ciMethodBlocks(arena, this); | |
1098 } | |
1099 return _method_blocks; | |
1100 } | |
1101 | |
1102 #undef FETCH_FLAG_FROM_VM | |
1103 | |
1104 | |
1105 // ------------------------------------------------------------------ | |
1106 // ciMethod::print_codes | |
1107 // | |
1108 // Print a range of the bytecodes for this method. | |
1109 void ciMethod::print_codes_on(int from, int to, outputStream* st) { | |
1110 check_is_loaded(); | |
1111 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);) | |
1112 } | |
1113 | |
1114 // ------------------------------------------------------------------ | |
1115 // ciMethod::print_name | |
1116 // | |
1117 // Print the name of this method, including signature and some flags. | |
1118 void ciMethod::print_name(outputStream* st) { | |
1119 check_is_loaded(); | |
1120 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);) | |
1121 } | |
1122 | |
1123 // ------------------------------------------------------------------ | |
1124 // ciMethod::print_short_name | |
1125 // | |
1126 // Print the name of this method, without signature. | |
1127 void ciMethod::print_short_name(outputStream* st) { | |
1128 check_is_loaded(); | |
1129 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);) | |
1130 } | |
1131 | |
1132 // ------------------------------------------------------------------ | |
1133 // ciMethod::print_impl | |
1134 // | |
1135 // Implementation of the print method. | |
1136 void ciMethod::print_impl(outputStream* st) { | |
1137 ciObject::print_impl(st); | |
1138 st->print(" name="); | |
1139 name()->print_symbol_on(st); | |
1140 st->print(" holder="); | |
1141 holder()->print_name_on(st); | |
1142 st->print(" signature="); | |
1143 signature()->as_symbol()->print_symbol_on(st); | |
1144 if (is_loaded()) { | |
1145 st->print(" loaded=true flags="); | |
1146 flags().print_member_flags(st); | |
1147 } else { | |
1148 st->print(" loaded=false"); | |
1149 } | |
1150 } |