Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethod.cpp @ 6027:8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
Summary: Removed the HeapRegion::_top_at_conc_mark_count field. It is no longer needed as a result of the changes for 6888336 and 7127706. Refactored the closures that finalize and verify the liveness counting data so that common functionality was placed into a base class.
Reviewed-by: brutisso, tonyp
author | johnc |
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date | Wed, 25 Apr 2012 10:23:12 -0700 |
parents | 5eb9169b1a14 |
children | 04b9a2566eec 8150fa46d2ed |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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/ciMethodKlass.hpp" | |
33 #include "ci/ciStreams.hpp" | |
34 #include "ci/ciSymbol.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/methodOop.hpp" | |
55 #endif | |
56 #ifdef SHARK | |
57 #include "ci/ciTypeFlow.hpp" | |
58 #include "oops/methodOop.hpp" | |
59 #endif | |
0 | 60 |
61 // ciMethod | |
62 // | |
63 // This class represents a methodOop in the HotSpot virtual | |
64 // machine. | |
65 | |
66 | |
67 // ------------------------------------------------------------------ | |
68 // ciMethod::ciMethod | |
69 // | |
70 // Loaded method. | |
71 ciMethod::ciMethod(methodHandle h_m) : ciObject(h_m) { | |
72 assert(h_m() != NULL, "no null method"); | |
73 | |
74 // These fields are always filled in in loaded methods. | |
75 _flags = ciFlags(h_m()->access_flags()); | |
76 | |
77 // Easy to compute, so fill them in now. | |
78 _max_stack = h_m()->max_stack(); | |
79 _max_locals = h_m()->max_locals(); | |
80 _code_size = h_m()->code_size(); | |
81 _intrinsic_id = h_m()->intrinsic_id(); | |
82 _handler_count = h_m()->exception_table()->length() / 4; | |
83 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes(); | |
84 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching(); | |
1783 | 85 _is_c1_compilable = !h_m()->is_not_c1_compilable(); |
86 _is_c2_compilable = !h_m()->is_not_c2_compilable(); | |
0 | 87 // Lazy fields, filled in on demand. Require allocation. |
88 _code = NULL; | |
89 _exception_handlers = NULL; | |
90 _liveness = NULL; | |
91 _method_blocks = NULL; | |
1692 | 92 #if defined(COMPILER2) || defined(SHARK) |
0 | 93 _flow = NULL; |
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94 _bcea = NULL; |
1692 | 95 #endif // COMPILER2 || SHARK |
0 | 96 |
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97 ciEnv *env = CURRENT_ENV; |
1783 | 98 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) { |
0 | 99 // 6328518 check hotswap conditions under the right lock. |
100 MutexLocker locker(Compile_lock); | |
101 if (Dependencies::check_evol_method(h_m()) != NULL) { | |
1783 | 102 _is_c1_compilable = false; |
103 _is_c2_compilable = false; | |
0 | 104 } |
105 } else { | |
106 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
107 } | |
108 | |
109 if (instanceKlass::cast(h_m()->method_holder())->is_linked()) { | |
110 _can_be_statically_bound = h_m()->can_be_statically_bound(); | |
111 } else { | |
112 // Have to use a conservative value in this case. | |
113 _can_be_statically_bound = false; | |
114 } | |
115 | |
116 // Adjust the definition of this condition to be more useful: | |
117 // %%% take these conditions into account in vtable generation | |
118 if (!_can_be_statically_bound && h_m()->is_private()) | |
119 _can_be_statically_bound = true; | |
120 if (_can_be_statically_bound && h_m()->is_abstract()) | |
121 _can_be_statically_bound = false; | |
122 | |
123 // generating _signature may allow GC and therefore move m. | |
124 // These fields are always filled in. | |
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125 _name = env->get_symbol(h_m()->name()); |
0 | 126 _holder = env->get_object(h_m()->method_holder())->as_instance_klass(); |
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127 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature()); |
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128 constantPoolHandle cpool = h_m()->constants(); |
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129 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol); |
0 | 130 _method_data = NULL; |
131 // Take a snapshot of these values, so they will be commensurate with the MDO. | |
1783 | 132 if (ProfileInterpreter || TieredCompilation) { |
0 | 133 int invcnt = h_m()->interpreter_invocation_count(); |
134 // if the value overflowed report it as max int | |
135 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ; | |
136 _interpreter_throwout_count = h_m()->interpreter_throwout_count(); | |
137 } else { | |
138 _interpreter_invocation_count = 0; | |
139 _interpreter_throwout_count = 0; | |
140 } | |
141 if (_interpreter_invocation_count == 0) | |
142 _interpreter_invocation_count = 1; | |
143 } | |
144 | |
145 | |
146 // ------------------------------------------------------------------ | |
147 // ciMethod::ciMethod | |
148 // | |
149 // Unloaded method. | |
150 ciMethod::ciMethod(ciInstanceKlass* holder, | |
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151 ciSymbol* name, |
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152 ciSymbol* signature, |
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153 ciInstanceKlass* accessor) : |
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154 ciObject(ciMethodKlass::make()), |
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155 _name( name), |
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156 _holder( holder), |
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157 _intrinsic_id( vmIntrinsics::_none), |
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158 _liveness( NULL), |
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159 _can_be_statically_bound(false), |
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160 _method_blocks( NULL), |
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161 _method_data( NULL) |
1692 | 162 #if defined(COMPILER2) || defined(SHARK) |
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163 , |
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164 _flow( NULL), |
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165 _bcea( NULL) |
1692 | 166 #endif // COMPILER2 || SHARK |
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167 { |
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168 // Usually holder and accessor are the same type but in some cases |
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169 // the holder has the wrong class loader (e.g. invokedynamic call |
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170 // sites) so we pass the accessor. |
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171 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature); |
0 | 172 } |
173 | |
174 | |
175 // ------------------------------------------------------------------ | |
176 // ciMethod::load_code | |
177 // | |
178 // Load the bytecodes and exception handler table for this method. | |
179 void ciMethod::load_code() { | |
180 VM_ENTRY_MARK; | |
181 assert(is_loaded(), "only loaded methods have code"); | |
182 | |
183 methodOop me = get_methodOop(); | |
184 Arena* arena = CURRENT_THREAD_ENV->arena(); | |
185 | |
186 // Load the bytecodes. | |
187 _code = (address)arena->Amalloc(code_size()); | |
188 memcpy(_code, me->code_base(), code_size()); | |
189 | |
190 // Revert any breakpoint bytecodes in ci's copy | |
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191 if (me->number_of_breakpoints() > 0) { |
0 | 192 BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints(); |
193 for (; bp != NULL; bp = bp->next()) { | |
194 if (bp->match(me)) { | |
195 code_at_put(bp->bci(), bp->orig_bytecode()); | |
196 } | |
197 } | |
198 } | |
199 | |
200 // And load the exception table. | |
201 typeArrayOop exc_table = me->exception_table(); | |
202 | |
203 // Allocate one extra spot in our list of exceptions. This | |
204 // last entry will be used to represent the possibility that | |
205 // an exception escapes the method. See ciExceptionHandlerStream | |
206 // for details. | |
207 _exception_handlers = | |
208 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) | |
209 * (_handler_count + 1)); | |
210 if (_handler_count > 0) { | |
211 for (int i=0; i<_handler_count; i++) { | |
212 int base = i*4; | |
213 _exception_handlers[i] = new (arena) ciExceptionHandler( | |
214 holder(), | |
215 /* start */ exc_table->int_at(base), | |
216 /* limit */ exc_table->int_at(base+1), | |
217 /* goto pc */ exc_table->int_at(base+2), | |
218 /* cp index */ exc_table->int_at(base+3)); | |
219 } | |
220 } | |
221 | |
222 // Put an entry at the end of our list to represent the possibility | |
223 // of exceptional exit. | |
224 _exception_handlers[_handler_count] = | |
225 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); | |
226 | |
227 if (CIPrintMethodCodes) { | |
228 print_codes(); | |
229 } | |
230 } | |
231 | |
232 | |
233 // ------------------------------------------------------------------ | |
234 // ciMethod::has_linenumber_table | |
235 // | |
236 // length unknown until decompression | |
237 bool ciMethod::has_linenumber_table() const { | |
238 check_is_loaded(); | |
239 VM_ENTRY_MARK; | |
240 return get_methodOop()->has_linenumber_table(); | |
241 } | |
242 | |
243 | |
244 // ------------------------------------------------------------------ | |
245 // ciMethod::compressed_linenumber_table | |
246 u_char* ciMethod::compressed_linenumber_table() const { | |
247 check_is_loaded(); | |
248 VM_ENTRY_MARK; | |
249 return get_methodOop()->compressed_linenumber_table(); | |
250 } | |
251 | |
252 | |
253 // ------------------------------------------------------------------ | |
254 // ciMethod::line_number_from_bci | |
255 int ciMethod::line_number_from_bci(int bci) const { | |
256 check_is_loaded(); | |
257 VM_ENTRY_MARK; | |
258 return get_methodOop()->line_number_from_bci(bci); | |
259 } | |
260 | |
261 | |
262 // ------------------------------------------------------------------ | |
263 // ciMethod::vtable_index | |
264 // | |
265 // Get the position of this method's entry in the vtable, if any. | |
266 int ciMethod::vtable_index() { | |
267 check_is_loaded(); | |
268 assert(holder()->is_linked(), "must be linked"); | |
269 VM_ENTRY_MARK; | |
270 return get_methodOop()->vtable_index(); | |
271 } | |
272 | |
273 | |
1692 | 274 #ifdef SHARK |
275 // ------------------------------------------------------------------ | |
276 // ciMethod::itable_index | |
277 // | |
278 // Get the position of this method's entry in the itable, if any. | |
279 int ciMethod::itable_index() { | |
280 check_is_loaded(); | |
281 assert(holder()->is_linked(), "must be linked"); | |
282 VM_ENTRY_MARK; | |
283 return klassItable::compute_itable_index(get_methodOop()); | |
284 } | |
285 #endif // SHARK | |
286 | |
287 | |
0 | 288 // ------------------------------------------------------------------ |
289 // ciMethod::native_entry | |
290 // | |
291 // Get the address of this method's native code, if any. | |
292 address ciMethod::native_entry() { | |
293 check_is_loaded(); | |
294 assert(flags().is_native(), "must be native method"); | |
295 VM_ENTRY_MARK; | |
296 methodOop method = get_methodOop(); | |
297 address entry = method->native_function(); | |
298 assert(entry != NULL, "must be valid entry point"); | |
299 return entry; | |
300 } | |
301 | |
302 | |
303 // ------------------------------------------------------------------ | |
304 // ciMethod::interpreter_entry | |
305 // | |
306 // Get the entry point for running this method in the interpreter. | |
307 address ciMethod::interpreter_entry() { | |
308 check_is_loaded(); | |
309 VM_ENTRY_MARK; | |
310 methodHandle mh(THREAD, get_methodOop()); | |
311 return Interpreter::entry_for_method(mh); | |
312 } | |
313 | |
314 | |
315 // ------------------------------------------------------------------ | |
316 // ciMethod::uses_balanced_monitors | |
317 // | |
318 // Does this method use monitors in a strict stack-disciplined manner? | |
319 bool ciMethod::has_balanced_monitors() { | |
320 check_is_loaded(); | |
321 if (_balanced_monitors) return true; | |
322 | |
323 // Analyze the method to see if monitors are used properly. | |
324 VM_ENTRY_MARK; | |
325 methodHandle method(THREAD, get_methodOop()); | |
326 assert(method->has_monitor_bytecodes(), "should have checked this"); | |
327 | |
328 // Check to see if a previous compilation computed the | |
329 // monitor-matching analysis. | |
330 if (method->guaranteed_monitor_matching()) { | |
331 _balanced_monitors = true; | |
332 return true; | |
333 } | |
334 | |
335 { | |
336 EXCEPTION_MARK; | |
337 ResourceMark rm(THREAD); | |
338 GeneratePairingInfo gpi(method); | |
339 gpi.compute_map(CATCH); | |
340 if (!gpi.monitor_safe()) { | |
341 return false; | |
342 } | |
343 method->set_guaranteed_monitor_matching(); | |
344 _balanced_monitors = true; | |
345 } | |
346 return true; | |
347 } | |
348 | |
349 | |
350 // ------------------------------------------------------------------ | |
351 // ciMethod::get_flow_analysis | |
352 ciTypeFlow* ciMethod::get_flow_analysis() { | |
1692 | 353 #if defined(COMPILER2) || defined(SHARK) |
0 | 354 if (_flow == NULL) { |
355 ciEnv* env = CURRENT_ENV; | |
356 _flow = new (env->arena()) ciTypeFlow(env, this); | |
357 _flow->do_flow(); | |
358 } | |
359 return _flow; | |
1692 | 360 #else // COMPILER2 || SHARK |
0 | 361 ShouldNotReachHere(); |
362 return NULL; | |
1692 | 363 #endif // COMPILER2 || SHARK |
0 | 364 } |
365 | |
366 | |
367 // ------------------------------------------------------------------ | |
368 // ciMethod::get_osr_flow_analysis | |
369 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { | |
1692 | 370 #if defined(COMPILER2) || defined(SHARK) |
0 | 371 // OSR entry points are always place after a call bytecode of some sort |
372 assert(osr_bci >= 0, "must supply valid OSR entry point"); | |
373 ciEnv* env = CURRENT_ENV; | |
374 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); | |
375 flow->do_flow(); | |
376 return flow; | |
1692 | 377 #else // COMPILER2 || SHARK |
0 | 378 ShouldNotReachHere(); |
379 return NULL; | |
1692 | 380 #endif // COMPILER2 || SHARK |
0 | 381 } |
382 | |
383 // ------------------------------------------------------------------ | |
991 | 384 // ciMethod::raw_liveness_at_bci |
0 | 385 // |
386 // Which local variables are live at a specific bci? | |
991 | 387 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
0 | 388 check_is_loaded(); |
389 if (_liveness == NULL) { | |
390 // Create the liveness analyzer. | |
391 Arena* arena = CURRENT_ENV->arena(); | |
392 _liveness = new (arena) MethodLiveness(arena, this); | |
393 _liveness->compute_liveness(); | |
394 } | |
991 | 395 return _liveness->get_liveness_at(bci); |
396 } | |
397 | |
398 // ------------------------------------------------------------------ | |
399 // ciMethod::liveness_at_bci | |
400 // | |
401 // Which local variables are live at a specific bci? When debugging | |
402 // will return true for all locals in some cases to improve debug | |
403 // information. | |
404 MethodLivenessResult ciMethod::liveness_at_bci(int bci) { | |
405 MethodLivenessResult result = raw_liveness_at_bci(bci); | |
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406 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
0 | 407 // Keep all locals live for the user's edification and amusement. |
408 result.at_put_range(0, result.size(), true); | |
409 } | |
410 return result; | |
411 } | |
412 | |
413 // ciMethod::live_local_oops_at_bci | |
414 // | |
415 // find all the live oops in the locals array for a particular bci | |
416 // Compute what the interpreter believes by using the interpreter | |
417 // oopmap generator. This is used as a double check during osr to | |
418 // guard against conservative result from MethodLiveness making us | |
419 // think a dead oop is live. MethodLiveness is conservative in the | |
420 // sense that it may consider locals to be live which cannot be live, | |
421 // like in the case where a local could contain an oop or a primitive | |
422 // along different paths. In that case the local must be dead when | |
423 // those paths merge. Since the interpreter's viewpoint is used when | |
424 // gc'ing an interpreter frame we need to use its viewpoint during | |
425 // OSR when loading the locals. | |
426 | |
427 BitMap ciMethod::live_local_oops_at_bci(int bci) { | |
428 VM_ENTRY_MARK; | |
429 InterpreterOopMap mask; | |
430 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask); | |
431 int mask_size = max_locals(); | |
432 BitMap result(mask_size); | |
433 result.clear(); | |
434 int i; | |
435 for (i = 0; i < mask_size ; i++ ) { | |
436 if (mask.is_oop(i)) result.set_bit(i); | |
437 } | |
438 return result; | |
439 } | |
440 | |
441 | |
442 #ifdef COMPILER1 | |
443 // ------------------------------------------------------------------ | |
444 // ciMethod::bci_block_start | |
445 // | |
446 // Marks all bcis where a new basic block starts | |
447 const BitMap ciMethod::bci_block_start() { | |
448 check_is_loaded(); | |
449 if (_liveness == NULL) { | |
450 // Create the liveness analyzer. | |
451 Arena* arena = CURRENT_ENV->arena(); | |
452 _liveness = new (arena) MethodLiveness(arena, this); | |
453 _liveness->compute_liveness(); | |
454 } | |
455 | |
456 return _liveness->get_bci_block_start(); | |
457 } | |
458 #endif // COMPILER1 | |
459 | |
460 | |
461 // ------------------------------------------------------------------ | |
462 // ciMethod::call_profile_at_bci | |
463 // | |
464 // Get the ciCallProfile for the invocation of this method. | |
465 // Also reports receiver types for non-call type checks (if TypeProfileCasts). | |
466 ciCallProfile ciMethod::call_profile_at_bci(int bci) { | |
467 ResourceMark rm; | |
468 ciCallProfile result; | |
469 if (method_data() != NULL && method_data()->is_mature()) { | |
470 ciProfileData* data = method_data()->bci_to_data(bci); | |
471 if (data != NULL && data->is_CounterData()) { | |
472 // Every profiled call site has a counter. | |
473 int count = data->as_CounterData()->count(); | |
474 | |
475 if (!data->is_ReceiverTypeData()) { | |
476 result._receiver_count[0] = 0; // that's a definite zero | |
477 } else { // ReceiverTypeData is a subclass of CounterData | |
478 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); | |
479 // In addition, virtual call sites have receiver type information | |
480 int receivers_count_total = 0; | |
481 int morphism = 0; | |
1783 | 482 // Precompute morphism for the possible fixup |
0 | 483 for (uint i = 0; i < call->row_limit(); i++) { |
484 ciKlass* receiver = call->receiver(i); | |
485 if (receiver == NULL) continue; | |
1783 | 486 morphism++; |
487 } | |
488 int epsilon = 0; | |
489 if (TieredCompilation && ProfileInterpreter) { | |
490 // Interpreter and C1 treat final and special invokes differently. | |
491 // C1 will record a type, whereas the interpreter will just | |
492 // increment the count. Detect this case. | |
493 if (morphism == 1 && count > 0) { | |
494 epsilon = count; | |
495 count = 0; | |
496 } | |
497 } | |
498 for (uint i = 0; i < call->row_limit(); i++) { | |
499 ciKlass* receiver = call->receiver(i); | |
500 if (receiver == NULL) continue; | |
501 int rcount = call->receiver_count(i) + epsilon; | |
0 | 502 if (rcount == 0) rcount = 1; // Should be valid value |
503 receivers_count_total += rcount; | |
504 // Add the receiver to result data. | |
505 result.add_receiver(receiver, rcount); | |
506 // If we extend profiling to record methods, | |
507 // we will set result._method also. | |
508 } | |
509 // Determine call site's morphism. | |
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510 // The call site count is 0 with known morphism (onlt 1 or 2 receivers) |
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511 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof. |
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512 // The call site count is > 0 in the case of a polymorphic virtual call. |
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513 if (morphism > 0 && morphism == result._limit) { |
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514 // The morphism <= MorphismLimit. |
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515 if ((morphism < ciCallProfile::MorphismLimit) || |
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516 (morphism == ciCallProfile::MorphismLimit && count == 0)) { |
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517 #ifdef ASSERT |
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518 if (count > 0) { |
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519 this->print_short_name(tty); |
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520 tty->print_cr(" @ bci:%d", bci); |
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521 this->print_codes(); |
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522 assert(false, "this call site should not be polymorphic"); |
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523 } |
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524 #endif |
0 | 525 result._morphism = morphism; |
526 } | |
527 } | |
528 // Make the count consistent if this is a call profile. If count is | |
529 // zero or less, presume that this is a typecheck profile and | |
530 // do nothing. Otherwise, increase count to be the sum of all | |
531 // receiver's counts. | |
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532 if (count >= 0) { |
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533 count += receivers_count_total; |
0 | 534 } |
535 } | |
536 result._count = count; | |
537 } | |
538 } | |
539 return result; | |
540 } | |
541 | |
542 // ------------------------------------------------------------------ | |
543 // Add new receiver and sort data by receiver's profile count. | |
544 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { | |
545 // Add new receiver and sort data by receiver's counts when we have space | |
546 // for it otherwise replace the less called receiver (less called receiver | |
547 // is placed to the last array element which is not used). | |
548 // First array's element contains most called receiver. | |
549 int i = _limit; | |
550 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { | |
551 _receiver[i] = _receiver[i-1]; | |
552 _receiver_count[i] = _receiver_count[i-1]; | |
553 } | |
554 _receiver[i] = receiver; | |
555 _receiver_count[i] = receiver_count; | |
556 if (_limit < MorphismLimit) _limit++; | |
557 } | |
558 | |
559 // ------------------------------------------------------------------ | |
560 // ciMethod::find_monomorphic_target | |
561 // | |
562 // Given a certain calling environment, find the monomorphic target | |
563 // for the call. Return NULL if the call is not monomorphic in | |
564 // its calling environment, or if there are only abstract methods. | |
565 // The returned method is never abstract. | |
566 // Note: If caller uses a non-null result, it must inform dependencies | |
567 // via assert_unique_concrete_method or assert_leaf_type. | |
568 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, | |
569 ciInstanceKlass* callee_holder, | |
570 ciInstanceKlass* actual_recv) { | |
571 check_is_loaded(); | |
572 | |
573 if (actual_recv->is_interface()) { | |
574 // %%% We cannot trust interface types, yet. See bug 6312651. | |
575 return NULL; | |
576 } | |
577 | |
578 ciMethod* root_m = resolve_invoke(caller, actual_recv); | |
579 if (root_m == NULL) { | |
580 // Something went wrong looking up the actual receiver method. | |
581 return NULL; | |
582 } | |
583 assert(!root_m->is_abstract(), "resolve_invoke promise"); | |
584 | |
585 // Make certain quick checks even if UseCHA is false. | |
586 | |
587 // Is it private or final? | |
588 if (root_m->can_be_statically_bound()) { | |
589 return root_m; | |
590 } | |
591 | |
592 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { | |
593 // Easy case. There is no other place to put a method, so don't bother | |
594 // to go through the VM_ENTRY_MARK and all the rest. | |
595 return root_m; | |
596 } | |
597 | |
598 // Array methods (clone, hashCode, etc.) are always statically bound. | |
599 // If we were to see an array type here, we'd return root_m. | |
600 // However, this method processes only ciInstanceKlasses. (See 4962591.) | |
601 // The inline_native_clone intrinsic narrows Object to T[] properly, | |
602 // so there is no need to do the same job here. | |
603 | |
604 if (!UseCHA) return NULL; | |
605 | |
606 VM_ENTRY_MARK; | |
607 | |
608 methodHandle target; | |
609 { | |
610 MutexLocker locker(Compile_lock); | |
611 klassOop context = actual_recv->get_klassOop(); | |
612 target = Dependencies::find_unique_concrete_method(context, | |
613 root_m->get_methodOop()); | |
614 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. | |
615 } | |
616 | |
617 #ifndef PRODUCT | |
618 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) { | |
619 tty->print("found a non-root unique target method"); | |
620 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name()); | |
621 tty->print(" method = "); | |
622 target->print_short_name(tty); | |
623 tty->cr(); | |
624 } | |
625 #endif //PRODUCT | |
626 | |
627 if (target() == NULL) { | |
628 return NULL; | |
629 } | |
630 if (target() == root_m->get_methodOop()) { | |
631 return root_m; | |
632 } | |
633 if (!root_m->is_public() && | |
634 !root_m->is_protected()) { | |
635 // If we are going to reason about inheritance, it's easiest | |
636 // if the method in question is public, protected, or private. | |
637 // If the answer is not root_m, it is conservatively correct | |
638 // to return NULL, even if the CHA encountered irrelevant | |
639 // methods in other packages. | |
640 // %%% TO DO: Work out logic for package-private methods | |
641 // with the same name but different vtable indexes. | |
642 return NULL; | |
643 } | |
644 return CURRENT_THREAD_ENV->get_object(target())->as_method(); | |
645 } | |
646 | |
647 // ------------------------------------------------------------------ | |
648 // ciMethod::resolve_invoke | |
649 // | |
650 // Given a known receiver klass, find the target for the call. | |
651 // Return NULL if the call has no target or the target is abstract. | |
652 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { | |
653 check_is_loaded(); | |
654 VM_ENTRY_MARK; | |
655 | |
656 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
657 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop()); | |
658 KlassHandle h_resolved (THREAD, holder()->get_klassOop()); | |
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659 Symbol* h_name = name()->get_symbol(); |
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660 Symbol* h_signature = signature()->get_symbol(); |
0 | 661 |
662 methodHandle m; | |
663 // Only do exact lookup if receiver klass has been linked. Otherwise, | |
664 // the vtable has not been setup, and the LinkResolver will fail. | |
665 if (h_recv->oop_is_javaArray() | |
666 || | |
667 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { | |
668 if (holder()->is_interface()) { | |
669 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
670 } else { | |
671 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
672 } | |
673 } | |
674 | |
675 if (m.is_null()) { | |
676 // Return NULL only if there was a problem with lookup (uninitialized class, etc.) | |
677 return NULL; | |
678 } | |
679 | |
680 ciMethod* result = this; | |
681 if (m() != get_methodOop()) { | |
682 result = CURRENT_THREAD_ENV->get_object(m())->as_method(); | |
683 } | |
684 | |
685 // Don't return abstract methods because they aren't | |
686 // optimizable or interesting. | |
687 if (result->is_abstract()) { | |
688 return NULL; | |
689 } else { | |
690 return result; | |
691 } | |
692 } | |
693 | |
694 // ------------------------------------------------------------------ | |
695 // ciMethod::resolve_vtable_index | |
696 // | |
697 // Given a known receiver klass, find the vtable index for the call. | |
698 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown. | |
699 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { | |
700 check_is_loaded(); | |
701 | |
702 int vtable_index = methodOopDesc::invalid_vtable_index; | |
703 // Only do lookup if receiver klass has been linked. Otherwise, | |
704 // the vtable has not been setup, and the LinkResolver will fail. | |
705 if (!receiver->is_interface() | |
706 && (!receiver->is_instance_klass() || | |
707 receiver->as_instance_klass()->is_linked())) { | |
708 VM_ENTRY_MARK; | |
709 | |
710 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
711 KlassHandle h_recv (THREAD, receiver->get_klassOop()); | |
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712 Symbol* h_name = name()->get_symbol(); |
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713 Symbol* h_signature = signature()->get_symbol(); |
0 | 714 |
715 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); | |
716 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
717 // A statically bound method. Return "no such index". | |
718 vtable_index = methodOopDesc::invalid_vtable_index; | |
719 } | |
720 } | |
721 | |
722 return vtable_index; | |
723 } | |
724 | |
725 // ------------------------------------------------------------------ | |
726 // ciMethod::interpreter_call_site_count | |
727 int ciMethod::interpreter_call_site_count(int bci) { | |
728 if (method_data() != NULL) { | |
729 ResourceMark rm; | |
730 ciProfileData* data = method_data()->bci_to_data(bci); | |
731 if (data != NULL && data->is_CounterData()) { | |
732 return scale_count(data->as_CounterData()->count()); | |
733 } | |
734 } | |
735 return -1; // unknown | |
736 } | |
737 | |
738 // ------------------------------------------------------------------ | |
739 // Adjust a CounterData count to be commensurate with | |
740 // interpreter_invocation_count. If the MDO exists for | |
741 // only 25% of the time the method exists, then the | |
742 // counts in the MDO should be scaled by 4X, so that | |
743 // they can be usefully and stably compared against the | |
744 // invocation counts in methods. | |
745 int ciMethod::scale_count(int count, float prof_factor) { | |
746 if (count > 0 && method_data() != NULL) { | |
1783 | 747 int counter_life; |
0 | 748 int method_life = interpreter_invocation_count(); |
1783 | 749 if (TieredCompilation) { |
750 // In tiered the MDO's life is measured directly, so just use the snapshotted counters | |
751 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count()); | |
752 } else { | |
753 int current_mileage = method_data()->current_mileage(); | |
754 int creation_mileage = method_data()->creation_mileage(); | |
755 counter_life = current_mileage - creation_mileage; | |
756 } | |
757 | |
0 | 758 // counter_life due to backedge_counter could be > method_life |
759 if (counter_life > method_life) | |
760 counter_life = method_life; | |
761 if (0 < counter_life && counter_life <= method_life) { | |
762 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); | |
763 count = (count > 0) ? count : 1; | |
764 } | |
765 } | |
766 return count; | |
767 } | |
768 | |
769 // ------------------------------------------------------------------ | |
710 | 770 // invokedynamic support |
1564 | 771 |
772 // ------------------------------------------------------------------ | |
773 // ciMethod::is_method_handle_invoke | |
710 | 774 // |
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775 // Return true if the method is an instance of one of the two |
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776 // signature-polymorphic MethodHandle methods, invokeExact or invokeGeneric. |
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777 bool ciMethod::is_method_handle_invoke() const { |
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778 if (!is_loaded()) { |
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779 bool flag = (holder()->name() == ciSymbol::java_lang_invoke_MethodHandle() && |
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780 methodOopDesc::is_method_handle_invoke_name(name()->sid())); |
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781 return flag; |
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782 } |
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783 VM_ENTRY_MARK; |
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784 return get_methodOop()->is_method_handle_invoke(); |
710 | 785 } |
786 | |
1564 | 787 // ------------------------------------------------------------------ |
788 // ciMethod::is_method_handle_adapter | |
789 // | |
790 // Return true if the method is a generated MethodHandle adapter. | |
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791 // These are built by MethodHandleCompiler. |
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792 bool ciMethod::is_method_handle_adapter() const { |
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793 if (!is_loaded()) return false; |
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794 VM_ENTRY_MARK; |
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795 return get_methodOop()->is_method_handle_adapter(); |
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796 } |
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797 |
710 | 798 ciInstance* ciMethod::method_handle_type() { |
799 check_is_loaded(); | |
800 VM_ENTRY_MARK; | |
801 oop mtype = get_methodOop()->method_handle_type(); | |
802 return CURRENT_THREAD_ENV->get_object(mtype)->as_instance(); | |
803 } | |
804 | |
805 | |
806 // ------------------------------------------------------------------ | |
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807 // ciMethod::ensure_method_data |
0 | 808 // |
809 // Generate new methodDataOop objects at compile time. | |
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810 // Return true if allocation was successful or no MDO is required. |
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811 bool ciMethod::ensure_method_data(methodHandle h_m) { |
0 | 812 EXCEPTION_CONTEXT; |
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813 if (is_native() || is_abstract() || h_m()->is_accessor()) return true; |
0 | 814 if (h_m()->method_data() == NULL) { |
815 methodOopDesc::build_interpreter_method_data(h_m, THREAD); | |
816 if (HAS_PENDING_EXCEPTION) { | |
817 CLEAR_PENDING_EXCEPTION; | |
818 } | |
819 } | |
820 if (h_m()->method_data() != NULL) { | |
821 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
822 _method_data->load_data(); | |
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823 return true; |
0 | 824 } else { |
825 _method_data = CURRENT_ENV->get_empty_methodData(); | |
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826 return false; |
0 | 827 } |
828 } | |
829 | |
830 // public, retroactive version | |
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831 bool ciMethod::ensure_method_data() { |
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832 bool result = true; |
0 | 833 if (_method_data == NULL || _method_data->is_empty()) { |
834 GUARDED_VM_ENTRY({ | |
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835 result = ensure_method_data(get_methodOop()); |
0 | 836 }); |
837 } | |
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838 return result; |
0 | 839 } |
840 | |
841 | |
842 // ------------------------------------------------------------------ | |
843 // ciMethod::method_data | |
844 // | |
845 ciMethodData* ciMethod::method_data() { | |
846 if (_method_data != NULL) { | |
847 return _method_data; | |
848 } | |
849 VM_ENTRY_MARK; | |
850 ciEnv* env = CURRENT_ENV; | |
851 Thread* my_thread = JavaThread::current(); | |
852 methodHandle h_m(my_thread, get_methodOop()); | |
853 | |
854 if (h_m()->method_data() != NULL) { | |
855 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
856 _method_data->load_data(); | |
857 } else { | |
858 _method_data = CURRENT_ENV->get_empty_methodData(); | |
859 } | |
860 return _method_data; | |
861 | |
862 } | |
863 | |
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864 // ------------------------------------------------------------------ |
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865 // ciMethod::method_data_or_null |
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866 // Returns a pointer to ciMethodData if MDO exists on the VM side, |
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867 // NULL otherwise. |
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868 ciMethodData* ciMethod::method_data_or_null() { |
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869 ciMethodData *md = method_data(); |
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870 if (md->is_empty()) return NULL; |
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871 return md; |
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872 } |
0 | 873 |
874 // ------------------------------------------------------------------ | |
875 // ciMethod::will_link | |
876 // | |
877 // Will this method link in a specific calling context? | |
878 bool ciMethod::will_link(ciKlass* accessing_klass, | |
879 ciKlass* declared_method_holder, | |
880 Bytecodes::Code bc) { | |
881 if (!is_loaded()) { | |
882 // Method lookup failed. | |
883 return false; | |
884 } | |
885 | |
886 // The link checks have been front-loaded into the get_method | |
887 // call. This method (ciMethod::will_link()) will be removed | |
888 // in the future. | |
889 | |
890 return true; | |
891 } | |
892 | |
893 // ------------------------------------------------------------------ | |
894 // ciMethod::should_exclude | |
895 // | |
896 // Should this method be excluded from compilation? | |
897 bool ciMethod::should_exclude() { | |
898 check_is_loaded(); | |
899 VM_ENTRY_MARK; | |
900 methodHandle mh(THREAD, get_methodOop()); | |
901 bool ignore; | |
902 return CompilerOracle::should_exclude(mh, ignore); | |
903 } | |
904 | |
905 // ------------------------------------------------------------------ | |
906 // ciMethod::should_inline | |
907 // | |
908 // Should this method be inlined during compilation? | |
909 bool ciMethod::should_inline() { | |
910 check_is_loaded(); | |
911 VM_ENTRY_MARK; | |
912 methodHandle mh(THREAD, get_methodOop()); | |
913 return CompilerOracle::should_inline(mh); | |
914 } | |
915 | |
916 // ------------------------------------------------------------------ | |
917 // ciMethod::should_not_inline | |
918 // | |
919 // Should this method be disallowed from inlining during compilation? | |
920 bool ciMethod::should_not_inline() { | |
921 check_is_loaded(); | |
922 VM_ENTRY_MARK; | |
923 methodHandle mh(THREAD, get_methodOop()); | |
924 return CompilerOracle::should_not_inline(mh); | |
925 } | |
926 | |
927 // ------------------------------------------------------------------ | |
928 // ciMethod::should_print_assembly | |
929 // | |
930 // Should the compiler print the generated code for this method? | |
931 bool ciMethod::should_print_assembly() { | |
932 check_is_loaded(); | |
933 VM_ENTRY_MARK; | |
934 methodHandle mh(THREAD, get_methodOop()); | |
935 return CompilerOracle::should_print(mh); | |
936 } | |
937 | |
938 // ------------------------------------------------------------------ | |
939 // ciMethod::break_at_execute | |
940 // | |
941 // Should the compiler insert a breakpoint into the generated code | |
942 // method? | |
943 bool ciMethod::break_at_execute() { | |
944 check_is_loaded(); | |
945 VM_ENTRY_MARK; | |
946 methodHandle mh(THREAD, get_methodOop()); | |
947 return CompilerOracle::should_break_at(mh); | |
948 } | |
949 | |
950 // ------------------------------------------------------------------ | |
951 // ciMethod::has_option | |
952 // | |
953 bool ciMethod::has_option(const char* option) { | |
954 check_is_loaded(); | |
955 VM_ENTRY_MARK; | |
956 methodHandle mh(THREAD, get_methodOop()); | |
957 return CompilerOracle::has_option_string(mh, option); | |
958 } | |
959 | |
960 // ------------------------------------------------------------------ | |
961 // ciMethod::can_be_compiled | |
962 // | |
963 // Have previous compilations of this method succeeded? | |
964 bool ciMethod::can_be_compiled() { | |
965 check_is_loaded(); | |
1783 | 966 ciEnv* env = CURRENT_ENV; |
967 if (is_c1_compile(env->comp_level())) { | |
968 return _is_c1_compilable; | |
969 } | |
970 return _is_c2_compilable; | |
0 | 971 } |
972 | |
973 // ------------------------------------------------------------------ | |
974 // ciMethod::set_not_compilable | |
975 // | |
976 // Tell the VM that this method cannot be compiled at all. | |
977 void ciMethod::set_not_compilable() { | |
978 check_is_loaded(); | |
979 VM_ENTRY_MARK; | |
1783 | 980 ciEnv* env = CURRENT_ENV; |
981 if (is_c1_compile(env->comp_level())) { | |
982 _is_c1_compilable = false; | |
983 } else { | |
984 _is_c2_compilable = false; | |
985 } | |
986 get_methodOop()->set_not_compilable(env->comp_level()); | |
0 | 987 } |
988 | |
989 // ------------------------------------------------------------------ | |
990 // ciMethod::can_be_osr_compiled | |
991 // | |
992 // Have previous compilations of this method succeeded? | |
993 // | |
994 // Implementation note: the VM does not currently keep track | |
995 // of failed OSR compilations per bci. The entry_bci parameter | |
996 // is currently unused. | |
997 bool ciMethod::can_be_osr_compiled(int entry_bci) { | |
998 check_is_loaded(); | |
999 VM_ENTRY_MARK; | |
1783 | 1000 ciEnv* env = CURRENT_ENV; |
1001 return !get_methodOop()->is_not_osr_compilable(env->comp_level()); | |
0 | 1002 } |
1003 | |
1004 // ------------------------------------------------------------------ | |
1005 // ciMethod::has_compiled_code | |
1006 bool ciMethod::has_compiled_code() { | |
1007 VM_ENTRY_MARK; | |
1008 return get_methodOop()->code() != NULL; | |
1009 } | |
1010 | |
1783 | 1011 int ciMethod::comp_level() { |
1012 check_is_loaded(); | |
1013 VM_ENTRY_MARK; | |
1014 nmethod* nm = get_methodOop()->code(); | |
1015 if (nm != NULL) return nm->comp_level(); | |
1016 return 0; | |
1017 } | |
1018 | |
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1019 int ciMethod::highest_osr_comp_level() { |
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1020 check_is_loaded(); |
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1021 VM_ENTRY_MARK; |
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1022 return get_methodOop()->highest_osr_comp_level(); |
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1023 } |
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1024 |
0 | 1025 // ------------------------------------------------------------------ |
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1026 // ciMethod::code_size_for_inlining |
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1027 // |
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1028 // Code size for inlining decisions. |
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1029 // |
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1030 // Don't fully count method handle adapters against inlining budgets: |
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1031 // the metric we use here is the number of call sites in the adapter |
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1032 // as they are probably the instructions which generate some code. |
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1033 int ciMethod::code_size_for_inlining() { |
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1034 check_is_loaded(); |
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1035 |
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1036 // Method handle adapters |
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1037 if (is_method_handle_adapter()) { |
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1038 // Count call sites |
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1039 int call_site_count = 0; |
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1040 ciBytecodeStream iter(this); |
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1041 while (iter.next() != ciBytecodeStream::EOBC()) { |
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1042 if (Bytecodes::is_invoke(iter.cur_bc())) { |
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1043 call_site_count++; |
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1044 } |
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1045 } |
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1046 return call_site_count; |
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1047 } |
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1048 |
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1049 // Normal method |
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1050 return code_size(); |
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1051 } |
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1052 |
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1053 // ------------------------------------------------------------------ |
0 | 1054 // ciMethod::instructions_size |
1748 | 1055 // |
1056 // This is a rough metric for "fat" methods, compared before inlining | |
1057 // with InlineSmallCode. The CodeBlob::code_size accessor includes | |
1058 // junk like exception handler, stubs, and constant table, which are | |
1059 // not highly relevant to an inlined method. So we use the more | |
1060 // specific accessor nmethod::insts_size. | |
1783 | 1061 int ciMethod::instructions_size(int comp_level) { |
0 | 1062 GUARDED_VM_ENTRY( |
1063 nmethod* code = get_methodOop()->code(); | |
1783 | 1064 if (code != NULL && (comp_level == CompLevel_any || comp_level == code->comp_level())) { |
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1065 return code->insts_end() - code->verified_entry_point(); |
0 | 1066 } |
1783 | 1067 return 0; |
0 | 1068 ) |
1069 } | |
1070 | |
1071 // ------------------------------------------------------------------ | |
1072 // ciMethod::log_nmethod_identity | |
1073 void ciMethod::log_nmethod_identity(xmlStream* log) { | |
1074 GUARDED_VM_ENTRY( | |
1075 nmethod* code = get_methodOop()->code(); | |
1076 if (code != NULL) { | |
1077 code->log_identity(log); | |
1078 } | |
1079 ) | |
1080 } | |
1081 | |
1082 // ------------------------------------------------------------------ | |
1083 // ciMethod::is_not_reached | |
1084 bool ciMethod::is_not_reached(int bci) { | |
1085 check_is_loaded(); | |
1086 VM_ENTRY_MARK; | |
1087 return Interpreter::is_not_reached( | |
1088 methodHandle(THREAD, get_methodOop()), bci); | |
1089 } | |
1090 | |
1091 // ------------------------------------------------------------------ | |
1092 // ciMethod::was_never_executed | |
1093 bool ciMethod::was_executed_more_than(int times) { | |
1094 VM_ENTRY_MARK; | |
1095 return get_methodOop()->was_executed_more_than(times); | |
1096 } | |
1097 | |
1098 // ------------------------------------------------------------------ | |
1099 // ciMethod::has_unloaded_classes_in_signature | |
1100 bool ciMethod::has_unloaded_classes_in_signature() { | |
1101 VM_ENTRY_MARK; | |
1102 { | |
1103 EXCEPTION_MARK; | |
1104 methodHandle m(THREAD, get_methodOop()); | |
1105 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); | |
1106 if( HAS_PENDING_EXCEPTION ) { | |
1107 CLEAR_PENDING_EXCEPTION; | |
1108 return true; // Declare that we may have unloaded classes | |
1109 } | |
1110 return has_unloaded; | |
1111 } | |
1112 } | |
1113 | |
1114 // ------------------------------------------------------------------ | |
1115 // ciMethod::is_klass_loaded | |
1116 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { | |
1117 VM_ENTRY_MARK; | |
1118 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved); | |
1119 } | |
1120 | |
1121 // ------------------------------------------------------------------ | |
1122 // ciMethod::check_call | |
1123 bool ciMethod::check_call(int refinfo_index, bool is_static) const { | |
1124 VM_ENTRY_MARK; | |
1125 { | |
1126 EXCEPTION_MARK; | |
1127 HandleMark hm(THREAD); | |
1128 constantPoolHandle pool (THREAD, get_methodOop()->constants()); | |
1129 methodHandle spec_method; | |
1130 KlassHandle spec_klass; | |
1131 LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD); | |
1132 if (HAS_PENDING_EXCEPTION) { | |
1133 CLEAR_PENDING_EXCEPTION; | |
1134 return false; | |
1135 } else { | |
1136 return (spec_method->is_static() == is_static); | |
1137 } | |
1138 } | |
1139 return false; | |
1140 } | |
1141 | |
1142 // ------------------------------------------------------------------ | |
1143 // ciMethod::print_codes | |
1144 // | |
1145 // Print the bytecodes for this method. | |
1146 void ciMethod::print_codes_on(outputStream* st) { | |
1147 check_is_loaded(); | |
1148 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);) | |
1149 } | |
1150 | |
1151 | |
1152 #define FETCH_FLAG_FROM_VM(flag_accessor) { \ | |
1153 check_is_loaded(); \ | |
1154 VM_ENTRY_MARK; \ | |
1155 return get_methodOop()->flag_accessor(); \ | |
1156 } | |
1157 | |
1158 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } | |
1159 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } | |
1160 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } | |
1161 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } | |
1162 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } | |
1163 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } | |
1164 | |
1165 BCEscapeAnalyzer *ciMethod::get_bcea() { | |
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1166 #ifdef COMPILER2 |
0 | 1167 if (_bcea == NULL) { |
1168 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); | |
1169 } | |
1170 return _bcea; | |
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1171 #else // COMPILER2 |
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1172 ShouldNotReachHere(); |
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1173 return NULL; |
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1174 #endif // COMPILER2 |
0 | 1175 } |
1176 | |
1177 ciMethodBlocks *ciMethod::get_method_blocks() { | |
1178 Arena *arena = CURRENT_ENV->arena(); | |
1179 if (_method_blocks == NULL) { | |
1180 _method_blocks = new (arena) ciMethodBlocks(arena, this); | |
1181 } | |
1182 return _method_blocks; | |
1183 } | |
1184 | |
1185 #undef FETCH_FLAG_FROM_VM | |
1186 | |
1187 | |
1188 // ------------------------------------------------------------------ | |
1189 // ciMethod::print_codes | |
1190 // | |
1191 // Print a range of the bytecodes for this method. | |
1192 void ciMethod::print_codes_on(int from, int to, outputStream* st) { | |
1193 check_is_loaded(); | |
1194 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);) | |
1195 } | |
1196 | |
1197 // ------------------------------------------------------------------ | |
1198 // ciMethod::print_name | |
1199 // | |
1200 // Print the name of this method, including signature and some flags. | |
1201 void ciMethod::print_name(outputStream* st) { | |
1202 check_is_loaded(); | |
1203 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);) | |
1204 } | |
1205 | |
1206 // ------------------------------------------------------------------ | |
1207 // ciMethod::print_short_name | |
1208 // | |
1209 // Print the name of this method, without signature. | |
1210 void ciMethod::print_short_name(outputStream* st) { | |
1211 check_is_loaded(); | |
1212 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);) | |
1213 } | |
1214 | |
1215 // ------------------------------------------------------------------ | |
1216 // ciMethod::print_impl | |
1217 // | |
1218 // Implementation of the print method. | |
1219 void ciMethod::print_impl(outputStream* st) { | |
1220 ciObject::print_impl(st); | |
1221 st->print(" name="); | |
1222 name()->print_symbol_on(st); | |
1223 st->print(" holder="); | |
1224 holder()->print_name_on(st); | |
1225 st->print(" signature="); | |
1226 signature()->as_symbol()->print_symbol_on(st); | |
1227 if (is_loaded()) { | |
1228 st->print(" loaded=true flags="); | |
1229 flags().print_member_flags(st); | |
1230 } else { | |
1231 st->print(" loaded=false"); | |
1232 } | |
1233 } |