Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethod.cpp @ 1692:d2ede61b7a12
6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
| author | twisti |
|---|---|
| date | Wed, 11 Aug 2010 05:51:21 -0700 |
| parents | e0ba4e04c839 |
| children | 3e8fbc61cee8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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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 * | |
|
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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 | |
| 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(); | |
| 52 _is_compilable = !h_m()->is_not_compilable(); | |
| 53 // Lazy fields, filled in on demand. Require allocation. | |
| 54 _code = NULL; | |
| 55 _exception_handlers = NULL; | |
| 56 _liveness = NULL; | |
| 57 _method_blocks = NULL; | |
| 1692 | 58 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 59 _flow = NULL; |
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60 _bcea = NULL; |
| 1692 | 61 #endif // COMPILER2 || SHARK |
| 0 | 62 |
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63 ciEnv *env = CURRENT_ENV; |
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64 if (env->jvmti_can_hotswap_or_post_breakpoint() && _is_compilable) { |
| 0 | 65 // 6328518 check hotswap conditions under the right lock. |
| 66 MutexLocker locker(Compile_lock); | |
| 67 if (Dependencies::check_evol_method(h_m()) != NULL) { | |
| 68 _is_compilable = false; | |
| 69 } | |
| 70 } else { | |
| 71 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
| 72 } | |
| 73 | |
| 74 if (instanceKlass::cast(h_m()->method_holder())->is_linked()) { | |
| 75 _can_be_statically_bound = h_m()->can_be_statically_bound(); | |
| 76 } else { | |
| 77 // Have to use a conservative value in this case. | |
| 78 _can_be_statically_bound = false; | |
| 79 } | |
| 80 | |
| 81 // Adjust the definition of this condition to be more useful: | |
| 82 // %%% take these conditions into account in vtable generation | |
| 83 if (!_can_be_statically_bound && h_m()->is_private()) | |
| 84 _can_be_statically_bound = true; | |
| 85 if (_can_be_statically_bound && h_m()->is_abstract()) | |
| 86 _can_be_statically_bound = false; | |
| 87 | |
| 88 // generating _signature may allow GC and therefore move m. | |
| 89 // These fields are always filled in. | |
| 90 _name = env->get_object(h_m()->name())->as_symbol(); | |
| 91 _holder = env->get_object(h_m()->method_holder())->as_instance_klass(); | |
| 92 ciSymbol* sig_symbol = env->get_object(h_m()->signature())->as_symbol(); | |
| 93 _signature = new (env->arena()) ciSignature(_holder, sig_symbol); | |
| 94 _method_data = NULL; | |
| 95 // Take a snapshot of these values, so they will be commensurate with the MDO. | |
| 96 if (ProfileInterpreter) { | |
| 97 int invcnt = h_m()->interpreter_invocation_count(); | |
| 98 // if the value overflowed report it as max int | |
| 99 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ; | |
| 100 _interpreter_throwout_count = h_m()->interpreter_throwout_count(); | |
| 101 } else { | |
| 102 _interpreter_invocation_count = 0; | |
| 103 _interpreter_throwout_count = 0; | |
| 104 } | |
| 105 if (_interpreter_invocation_count == 0) | |
| 106 _interpreter_invocation_count = 1; | |
| 107 } | |
| 108 | |
| 109 | |
| 110 // ------------------------------------------------------------------ | |
| 111 // ciMethod::ciMethod | |
| 112 // | |
| 113 // Unloaded method. | |
| 114 ciMethod::ciMethod(ciInstanceKlass* holder, | |
| 115 ciSymbol* name, | |
| 116 ciSymbol* signature) : ciObject(ciMethodKlass::make()) { | |
| 117 // These fields are always filled in. | |
| 118 _name = name; | |
| 119 _holder = holder; | |
| 120 _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, signature); | |
| 121 _intrinsic_id = vmIntrinsics::_none; | |
| 122 _liveness = NULL; | |
| 123 _can_be_statically_bound = false; | |
| 124 _method_blocks = NULL; | |
| 125 _method_data = NULL; | |
| 1692 | 126 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 127 _flow = NULL; |
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128 _bcea = NULL; |
| 1692 | 129 #endif // COMPILER2 || SHARK |
| 0 | 130 } |
| 131 | |
| 132 | |
| 133 // ------------------------------------------------------------------ | |
| 134 // ciMethod::load_code | |
| 135 // | |
| 136 // Load the bytecodes and exception handler table for this method. | |
| 137 void ciMethod::load_code() { | |
| 138 VM_ENTRY_MARK; | |
| 139 assert(is_loaded(), "only loaded methods have code"); | |
| 140 | |
| 141 methodOop me = get_methodOop(); | |
| 142 Arena* arena = CURRENT_THREAD_ENV->arena(); | |
| 143 | |
| 144 // Load the bytecodes. | |
| 145 _code = (address)arena->Amalloc(code_size()); | |
| 146 memcpy(_code, me->code_base(), code_size()); | |
| 147 | |
| 148 // Revert any breakpoint bytecodes in ci's copy | |
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149 if (me->number_of_breakpoints() > 0) { |
| 0 | 150 BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints(); |
| 151 for (; bp != NULL; bp = bp->next()) { | |
| 152 if (bp->match(me)) { | |
| 153 code_at_put(bp->bci(), bp->orig_bytecode()); | |
| 154 } | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 // And load the exception table. | |
| 159 typeArrayOop exc_table = me->exception_table(); | |
| 160 | |
| 161 // Allocate one extra spot in our list of exceptions. This | |
| 162 // last entry will be used to represent the possibility that | |
| 163 // an exception escapes the method. See ciExceptionHandlerStream | |
| 164 // for details. | |
| 165 _exception_handlers = | |
| 166 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) | |
| 167 * (_handler_count + 1)); | |
| 168 if (_handler_count > 0) { | |
| 169 for (int i=0; i<_handler_count; i++) { | |
| 170 int base = i*4; | |
| 171 _exception_handlers[i] = new (arena) ciExceptionHandler( | |
| 172 holder(), | |
| 173 /* start */ exc_table->int_at(base), | |
| 174 /* limit */ exc_table->int_at(base+1), | |
| 175 /* goto pc */ exc_table->int_at(base+2), | |
| 176 /* cp index */ exc_table->int_at(base+3)); | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 // Put an entry at the end of our list to represent the possibility | |
| 181 // of exceptional exit. | |
| 182 _exception_handlers[_handler_count] = | |
| 183 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); | |
| 184 | |
| 185 if (CIPrintMethodCodes) { | |
| 186 print_codes(); | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 | |
| 191 // ------------------------------------------------------------------ | |
| 192 // ciMethod::has_linenumber_table | |
| 193 // | |
| 194 // length unknown until decompression | |
| 195 bool ciMethod::has_linenumber_table() const { | |
| 196 check_is_loaded(); | |
| 197 VM_ENTRY_MARK; | |
| 198 return get_methodOop()->has_linenumber_table(); | |
| 199 } | |
| 200 | |
| 201 | |
| 202 // ------------------------------------------------------------------ | |
| 203 // ciMethod::compressed_linenumber_table | |
| 204 u_char* ciMethod::compressed_linenumber_table() const { | |
| 205 check_is_loaded(); | |
| 206 VM_ENTRY_MARK; | |
| 207 return get_methodOop()->compressed_linenumber_table(); | |
| 208 } | |
| 209 | |
| 210 | |
| 211 // ------------------------------------------------------------------ | |
| 212 // ciMethod::line_number_from_bci | |
| 213 int ciMethod::line_number_from_bci(int bci) const { | |
| 214 check_is_loaded(); | |
| 215 VM_ENTRY_MARK; | |
| 216 return get_methodOop()->line_number_from_bci(bci); | |
| 217 } | |
| 218 | |
| 219 | |
| 220 // ------------------------------------------------------------------ | |
| 221 // ciMethod::vtable_index | |
| 222 // | |
| 223 // Get the position of this method's entry in the vtable, if any. | |
| 224 int ciMethod::vtable_index() { | |
| 225 check_is_loaded(); | |
| 226 assert(holder()->is_linked(), "must be linked"); | |
| 227 VM_ENTRY_MARK; | |
| 228 return get_methodOop()->vtable_index(); | |
| 229 } | |
| 230 | |
| 231 | |
| 1692 | 232 #ifdef SHARK |
| 233 // ------------------------------------------------------------------ | |
| 234 // ciMethod::itable_index | |
| 235 // | |
| 236 // Get the position of this method's entry in the itable, if any. | |
| 237 int ciMethod::itable_index() { | |
| 238 check_is_loaded(); | |
| 239 assert(holder()->is_linked(), "must be linked"); | |
| 240 VM_ENTRY_MARK; | |
| 241 return klassItable::compute_itable_index(get_methodOop()); | |
| 242 } | |
| 243 #endif // SHARK | |
| 244 | |
| 245 | |
| 0 | 246 // ------------------------------------------------------------------ |
| 247 // ciMethod::native_entry | |
| 248 // | |
| 249 // Get the address of this method's native code, if any. | |
| 250 address ciMethod::native_entry() { | |
| 251 check_is_loaded(); | |
| 252 assert(flags().is_native(), "must be native method"); | |
| 253 VM_ENTRY_MARK; | |
| 254 methodOop method = get_methodOop(); | |
| 255 address entry = method->native_function(); | |
| 256 assert(entry != NULL, "must be valid entry point"); | |
| 257 return entry; | |
| 258 } | |
| 259 | |
| 260 | |
| 261 // ------------------------------------------------------------------ | |
| 262 // ciMethod::interpreter_entry | |
| 263 // | |
| 264 // Get the entry point for running this method in the interpreter. | |
| 265 address ciMethod::interpreter_entry() { | |
| 266 check_is_loaded(); | |
| 267 VM_ENTRY_MARK; | |
| 268 methodHandle mh(THREAD, get_methodOop()); | |
| 269 return Interpreter::entry_for_method(mh); | |
| 270 } | |
| 271 | |
| 272 | |
| 273 // ------------------------------------------------------------------ | |
| 274 // ciMethod::uses_balanced_monitors | |
| 275 // | |
| 276 // Does this method use monitors in a strict stack-disciplined manner? | |
| 277 bool ciMethod::has_balanced_monitors() { | |
| 278 check_is_loaded(); | |
| 279 if (_balanced_monitors) return true; | |
| 280 | |
| 281 // Analyze the method to see if monitors are used properly. | |
| 282 VM_ENTRY_MARK; | |
| 283 methodHandle method(THREAD, get_methodOop()); | |
| 284 assert(method->has_monitor_bytecodes(), "should have checked this"); | |
| 285 | |
| 286 // Check to see if a previous compilation computed the | |
| 287 // monitor-matching analysis. | |
| 288 if (method->guaranteed_monitor_matching()) { | |
| 289 _balanced_monitors = true; | |
| 290 return true; | |
| 291 } | |
| 292 | |
| 293 { | |
| 294 EXCEPTION_MARK; | |
| 295 ResourceMark rm(THREAD); | |
| 296 GeneratePairingInfo gpi(method); | |
| 297 gpi.compute_map(CATCH); | |
| 298 if (!gpi.monitor_safe()) { | |
| 299 return false; | |
| 300 } | |
| 301 method->set_guaranteed_monitor_matching(); | |
| 302 _balanced_monitors = true; | |
| 303 } | |
| 304 return true; | |
| 305 } | |
| 306 | |
| 307 | |
| 308 // ------------------------------------------------------------------ | |
| 309 // ciMethod::get_flow_analysis | |
| 310 ciTypeFlow* ciMethod::get_flow_analysis() { | |
| 1692 | 311 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 312 if (_flow == NULL) { |
| 313 ciEnv* env = CURRENT_ENV; | |
| 314 _flow = new (env->arena()) ciTypeFlow(env, this); | |
| 315 _flow->do_flow(); | |
| 316 } | |
| 317 return _flow; | |
| 1692 | 318 #else // COMPILER2 || SHARK |
| 0 | 319 ShouldNotReachHere(); |
| 320 return NULL; | |
| 1692 | 321 #endif // COMPILER2 || SHARK |
| 0 | 322 } |
| 323 | |
| 324 | |
| 325 // ------------------------------------------------------------------ | |
| 326 // ciMethod::get_osr_flow_analysis | |
| 327 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { | |
| 1692 | 328 #if defined(COMPILER2) || defined(SHARK) |
| 0 | 329 // OSR entry points are always place after a call bytecode of some sort |
| 330 assert(osr_bci >= 0, "must supply valid OSR entry point"); | |
| 331 ciEnv* env = CURRENT_ENV; | |
| 332 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); | |
| 333 flow->do_flow(); | |
| 334 return flow; | |
| 1692 | 335 #else // COMPILER2 || SHARK |
| 0 | 336 ShouldNotReachHere(); |
| 337 return NULL; | |
| 1692 | 338 #endif // COMPILER2 || SHARK |
| 0 | 339 } |
| 340 | |
| 341 // ------------------------------------------------------------------ | |
| 991 | 342 // ciMethod::raw_liveness_at_bci |
| 0 | 343 // |
| 344 // Which local variables are live at a specific bci? | |
| 991 | 345 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
| 0 | 346 check_is_loaded(); |
| 347 if (_liveness == NULL) { | |
| 348 // Create the liveness analyzer. | |
| 349 Arena* arena = CURRENT_ENV->arena(); | |
| 350 _liveness = new (arena) MethodLiveness(arena, this); | |
| 351 _liveness->compute_liveness(); | |
| 352 } | |
| 991 | 353 return _liveness->get_liveness_at(bci); |
| 354 } | |
| 355 | |
| 356 // ------------------------------------------------------------------ | |
| 357 // ciMethod::liveness_at_bci | |
| 358 // | |
| 359 // Which local variables are live at a specific bci? When debugging | |
| 360 // will return true for all locals in some cases to improve debug | |
| 361 // information. | |
| 362 MethodLivenessResult ciMethod::liveness_at_bci(int bci) { | |
| 363 MethodLivenessResult result = raw_liveness_at_bci(bci); | |
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364 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
| 0 | 365 // Keep all locals live for the user's edification and amusement. |
| 366 result.at_put_range(0, result.size(), true); | |
| 367 } | |
| 368 return result; | |
| 369 } | |
| 370 | |
| 371 // ciMethod::live_local_oops_at_bci | |
| 372 // | |
| 373 // find all the live oops in the locals array for a particular bci | |
| 374 // Compute what the interpreter believes by using the interpreter | |
| 375 // oopmap generator. This is used as a double check during osr to | |
| 376 // guard against conservative result from MethodLiveness making us | |
| 377 // think a dead oop is live. MethodLiveness is conservative in the | |
| 378 // sense that it may consider locals to be live which cannot be live, | |
| 379 // like in the case where a local could contain an oop or a primitive | |
| 380 // along different paths. In that case the local must be dead when | |
| 381 // those paths merge. Since the interpreter's viewpoint is used when | |
| 382 // gc'ing an interpreter frame we need to use its viewpoint during | |
| 383 // OSR when loading the locals. | |
| 384 | |
| 385 BitMap ciMethod::live_local_oops_at_bci(int bci) { | |
| 386 VM_ENTRY_MARK; | |
| 387 InterpreterOopMap mask; | |
| 388 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask); | |
| 389 int mask_size = max_locals(); | |
| 390 BitMap result(mask_size); | |
| 391 result.clear(); | |
| 392 int i; | |
| 393 for (i = 0; i < mask_size ; i++ ) { | |
| 394 if (mask.is_oop(i)) result.set_bit(i); | |
| 395 } | |
| 396 return result; | |
| 397 } | |
| 398 | |
| 399 | |
| 400 #ifdef COMPILER1 | |
| 401 // ------------------------------------------------------------------ | |
| 402 // ciMethod::bci_block_start | |
| 403 // | |
| 404 // Marks all bcis where a new basic block starts | |
| 405 const BitMap ciMethod::bci_block_start() { | |
| 406 check_is_loaded(); | |
| 407 if (_liveness == NULL) { | |
| 408 // Create the liveness analyzer. | |
| 409 Arena* arena = CURRENT_ENV->arena(); | |
| 410 _liveness = new (arena) MethodLiveness(arena, this); | |
| 411 _liveness->compute_liveness(); | |
| 412 } | |
| 413 | |
| 414 return _liveness->get_bci_block_start(); | |
| 415 } | |
| 416 #endif // COMPILER1 | |
| 417 | |
| 418 | |
| 419 // ------------------------------------------------------------------ | |
| 420 // ciMethod::call_profile_at_bci | |
| 421 // | |
| 422 // Get the ciCallProfile for the invocation of this method. | |
| 423 // Also reports receiver types for non-call type checks (if TypeProfileCasts). | |
| 424 ciCallProfile ciMethod::call_profile_at_bci(int bci) { | |
| 425 ResourceMark rm; | |
| 426 ciCallProfile result; | |
| 427 if (method_data() != NULL && method_data()->is_mature()) { | |
| 428 ciProfileData* data = method_data()->bci_to_data(bci); | |
| 429 if (data != NULL && data->is_CounterData()) { | |
| 430 // Every profiled call site has a counter. | |
| 431 int count = data->as_CounterData()->count(); | |
| 432 | |
| 433 if (!data->is_ReceiverTypeData()) { | |
| 434 result._receiver_count[0] = 0; // that's a definite zero | |
| 435 } else { // ReceiverTypeData is a subclass of CounterData | |
| 436 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); | |
| 437 // In addition, virtual call sites have receiver type information | |
| 438 int receivers_count_total = 0; | |
| 439 int morphism = 0; | |
| 440 for (uint i = 0; i < call->row_limit(); i++) { | |
| 441 ciKlass* receiver = call->receiver(i); | |
| 442 if (receiver == NULL) continue; | |
| 443 morphism += 1; | |
| 444 int rcount = call->receiver_count(i); | |
| 445 if (rcount == 0) rcount = 1; // Should be valid value | |
| 446 receivers_count_total += rcount; | |
| 447 // Add the receiver to result data. | |
| 448 result.add_receiver(receiver, rcount); | |
| 449 // If we extend profiling to record methods, | |
| 450 // we will set result._method also. | |
| 451 } | |
| 452 // Determine call site's morphism. | |
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453 // The call site count is 0 with known morphism (onlt 1 or 2 receivers) |
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454 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof. |
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455 // The call site count is > 0 in the case of a polymorphic virtual call. |
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456 if (morphism > 0 && morphism == result._limit) { |
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457 // The morphism <= MorphismLimit. |
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458 if ((morphism < ciCallProfile::MorphismLimit) || |
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459 (morphism == ciCallProfile::MorphismLimit && count == 0)) { |
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460 #ifdef ASSERT |
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461 if (count > 0) { |
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462 this->print_short_name(tty); |
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463 tty->print_cr(" @ bci:%d", bci); |
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464 this->print_codes(); |
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465 assert(false, "this call site should not be polymorphic"); |
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466 } |
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467 #endif |
| 0 | 468 result._morphism = morphism; |
| 469 } | |
| 470 } | |
| 471 // Make the count consistent if this is a call profile. If count is | |
| 472 // zero or less, presume that this is a typecheck profile and | |
| 473 // do nothing. Otherwise, increase count to be the sum of all | |
| 474 // receiver's counts. | |
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475 if (count >= 0) { |
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476 count += receivers_count_total; |
| 0 | 477 } |
| 478 } | |
| 479 result._count = count; | |
| 480 } | |
| 481 } | |
| 482 return result; | |
| 483 } | |
| 484 | |
| 485 // ------------------------------------------------------------------ | |
| 486 // Add new receiver and sort data by receiver's profile count. | |
| 487 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { | |
| 488 // Add new receiver and sort data by receiver's counts when we have space | |
| 489 // for it otherwise replace the less called receiver (less called receiver | |
| 490 // is placed to the last array element which is not used). | |
| 491 // First array's element contains most called receiver. | |
| 492 int i = _limit; | |
| 493 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { | |
| 494 _receiver[i] = _receiver[i-1]; | |
| 495 _receiver_count[i] = _receiver_count[i-1]; | |
| 496 } | |
| 497 _receiver[i] = receiver; | |
| 498 _receiver_count[i] = receiver_count; | |
| 499 if (_limit < MorphismLimit) _limit++; | |
| 500 } | |
| 501 | |
| 502 // ------------------------------------------------------------------ | |
| 503 // ciMethod::find_monomorphic_target | |
| 504 // | |
| 505 // Given a certain calling environment, find the monomorphic target | |
| 506 // for the call. Return NULL if the call is not monomorphic in | |
| 507 // its calling environment, or if there are only abstract methods. | |
| 508 // The returned method is never abstract. | |
| 509 // Note: If caller uses a non-null result, it must inform dependencies | |
| 510 // via assert_unique_concrete_method or assert_leaf_type. | |
| 511 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, | |
| 512 ciInstanceKlass* callee_holder, | |
| 513 ciInstanceKlass* actual_recv) { | |
| 514 check_is_loaded(); | |
| 515 | |
| 516 if (actual_recv->is_interface()) { | |
| 517 // %%% We cannot trust interface types, yet. See bug 6312651. | |
| 518 return NULL; | |
| 519 } | |
| 520 | |
| 521 ciMethod* root_m = resolve_invoke(caller, actual_recv); | |
| 522 if (root_m == NULL) { | |
| 523 // Something went wrong looking up the actual receiver method. | |
| 524 return NULL; | |
| 525 } | |
| 526 assert(!root_m->is_abstract(), "resolve_invoke promise"); | |
| 527 | |
| 528 // Make certain quick checks even if UseCHA is false. | |
| 529 | |
| 530 // Is it private or final? | |
| 531 if (root_m->can_be_statically_bound()) { | |
| 532 return root_m; | |
| 533 } | |
| 534 | |
| 535 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { | |
| 536 // Easy case. There is no other place to put a method, so don't bother | |
| 537 // to go through the VM_ENTRY_MARK and all the rest. | |
| 538 return root_m; | |
| 539 } | |
| 540 | |
| 541 // Array methods (clone, hashCode, etc.) are always statically bound. | |
| 542 // If we were to see an array type here, we'd return root_m. | |
| 543 // However, this method processes only ciInstanceKlasses. (See 4962591.) | |
| 544 // The inline_native_clone intrinsic narrows Object to T[] properly, | |
| 545 // so there is no need to do the same job here. | |
| 546 | |
| 547 if (!UseCHA) return NULL; | |
| 548 | |
| 549 VM_ENTRY_MARK; | |
| 550 | |
| 551 methodHandle target; | |
| 552 { | |
| 553 MutexLocker locker(Compile_lock); | |
| 554 klassOop context = actual_recv->get_klassOop(); | |
| 555 target = Dependencies::find_unique_concrete_method(context, | |
| 556 root_m->get_methodOop()); | |
| 557 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. | |
| 558 } | |
| 559 | |
| 560 #ifndef PRODUCT | |
| 561 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) { | |
| 562 tty->print("found a non-root unique target method"); | |
| 563 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name()); | |
| 564 tty->print(" method = "); | |
| 565 target->print_short_name(tty); | |
| 566 tty->cr(); | |
| 567 } | |
| 568 #endif //PRODUCT | |
| 569 | |
| 570 if (target() == NULL) { | |
| 571 return NULL; | |
| 572 } | |
| 573 if (target() == root_m->get_methodOop()) { | |
| 574 return root_m; | |
| 575 } | |
| 576 if (!root_m->is_public() && | |
| 577 !root_m->is_protected()) { | |
| 578 // If we are going to reason about inheritance, it's easiest | |
| 579 // if the method in question is public, protected, or private. | |
| 580 // If the answer is not root_m, it is conservatively correct | |
| 581 // to return NULL, even if the CHA encountered irrelevant | |
| 582 // methods in other packages. | |
| 583 // %%% TO DO: Work out logic for package-private methods | |
| 584 // with the same name but different vtable indexes. | |
| 585 return NULL; | |
| 586 } | |
| 587 return CURRENT_THREAD_ENV->get_object(target())->as_method(); | |
| 588 } | |
| 589 | |
| 590 // ------------------------------------------------------------------ | |
| 591 // ciMethod::resolve_invoke | |
| 592 // | |
| 593 // Given a known receiver klass, find the target for the call. | |
| 594 // Return NULL if the call has no target or the target is abstract. | |
| 595 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { | |
| 596 check_is_loaded(); | |
| 597 VM_ENTRY_MARK; | |
| 598 | |
| 599 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
| 600 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop()); | |
| 601 KlassHandle h_resolved (THREAD, holder()->get_klassOop()); | |
| 602 symbolHandle h_name (THREAD, name()->get_symbolOop()); | |
| 603 symbolHandle h_signature (THREAD, signature()->get_symbolOop()); | |
| 604 | |
| 605 methodHandle m; | |
| 606 // Only do exact lookup if receiver klass has been linked. Otherwise, | |
| 607 // the vtable has not been setup, and the LinkResolver will fail. | |
| 608 if (h_recv->oop_is_javaArray() | |
| 609 || | |
| 610 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { | |
| 611 if (holder()->is_interface()) { | |
| 612 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
| 613 } else { | |
| 614 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
| 615 } | |
| 616 } | |
| 617 | |
| 618 if (m.is_null()) { | |
| 619 // Return NULL only if there was a problem with lookup (uninitialized class, etc.) | |
| 620 return NULL; | |
| 621 } | |
| 622 | |
| 623 ciMethod* result = this; | |
| 624 if (m() != get_methodOop()) { | |
| 625 result = CURRENT_THREAD_ENV->get_object(m())->as_method(); | |
| 626 } | |
| 627 | |
| 628 // Don't return abstract methods because they aren't | |
| 629 // optimizable or interesting. | |
| 630 if (result->is_abstract()) { | |
| 631 return NULL; | |
| 632 } else { | |
| 633 return result; | |
| 634 } | |
| 635 } | |
| 636 | |
| 637 // ------------------------------------------------------------------ | |
| 638 // ciMethod::resolve_vtable_index | |
| 639 // | |
| 640 // Given a known receiver klass, find the vtable index for the call. | |
| 641 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown. | |
| 642 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { | |
| 643 check_is_loaded(); | |
| 644 | |
| 645 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 646 // Only do lookup if receiver klass has been linked. Otherwise, | |
| 647 // the vtable has not been setup, and the LinkResolver will fail. | |
| 648 if (!receiver->is_interface() | |
| 649 && (!receiver->is_instance_klass() || | |
| 650 receiver->as_instance_klass()->is_linked())) { | |
| 651 VM_ENTRY_MARK; | |
| 652 | |
| 653 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
| 654 KlassHandle h_recv (THREAD, receiver->get_klassOop()); | |
| 655 symbolHandle h_name (THREAD, name()->get_symbolOop()); | |
| 656 symbolHandle h_signature (THREAD, signature()->get_symbolOop()); | |
| 657 | |
| 658 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); | |
| 659 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
| 660 // A statically bound method. Return "no such index". | |
| 661 vtable_index = methodOopDesc::invalid_vtable_index; | |
| 662 } | |
| 663 } | |
| 664 | |
| 665 return vtable_index; | |
| 666 } | |
| 667 | |
| 668 // ------------------------------------------------------------------ | |
| 669 // ciMethod::interpreter_call_site_count | |
| 670 int ciMethod::interpreter_call_site_count(int bci) { | |
| 671 if (method_data() != NULL) { | |
| 672 ResourceMark rm; | |
| 673 ciProfileData* data = method_data()->bci_to_data(bci); | |
| 674 if (data != NULL && data->is_CounterData()) { | |
| 675 return scale_count(data->as_CounterData()->count()); | |
| 676 } | |
| 677 } | |
| 678 return -1; // unknown | |
| 679 } | |
| 680 | |
| 681 // ------------------------------------------------------------------ | |
| 682 // Adjust a CounterData count to be commensurate with | |
| 683 // interpreter_invocation_count. If the MDO exists for | |
| 684 // only 25% of the time the method exists, then the | |
| 685 // counts in the MDO should be scaled by 4X, so that | |
| 686 // they can be usefully and stably compared against the | |
| 687 // invocation counts in methods. | |
| 688 int ciMethod::scale_count(int count, float prof_factor) { | |
| 689 if (count > 0 && method_data() != NULL) { | |
| 690 int current_mileage = method_data()->current_mileage(); | |
| 691 int creation_mileage = method_data()->creation_mileage(); | |
| 692 int counter_life = current_mileage - creation_mileage; | |
| 693 int method_life = interpreter_invocation_count(); | |
| 694 // counter_life due to backedge_counter could be > method_life | |
| 695 if (counter_life > method_life) | |
| 696 counter_life = method_life; | |
| 697 if (0 < counter_life && counter_life <= method_life) { | |
| 698 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); | |
| 699 count = (count > 0) ? count : 1; | |
| 700 } | |
| 701 } | |
| 702 return count; | |
| 703 } | |
| 704 | |
| 705 // ------------------------------------------------------------------ | |
| 710 | 706 // invokedynamic support |
| 1564 | 707 |
| 708 // ------------------------------------------------------------------ | |
| 709 // ciMethod::is_method_handle_invoke | |
| 710 | 710 // |
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711 // Return true if the method is an instance of one of the two |
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712 // signature-polymorphic MethodHandle methods, invokeExact or invokeGeneric. |
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713 bool ciMethod::is_method_handle_invoke() const { |
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714 if (!is_loaded()) return false; |
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715 VM_ENTRY_MARK; |
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716 return get_methodOop()->is_method_handle_invoke(); |
| 710 | 717 } |
| 718 | |
| 1564 | 719 // ------------------------------------------------------------------ |
| 720 // ciMethod::is_method_handle_adapter | |
| 721 // | |
| 722 // Return true if the method is a generated MethodHandle adapter. | |
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723 // These are built by MethodHandleCompiler. |
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724 bool ciMethod::is_method_handle_adapter() const { |
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725 if (!is_loaded()) return false; |
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726 VM_ENTRY_MARK; |
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727 return get_methodOop()->is_method_handle_adapter(); |
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728 } |
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729 |
| 710 | 730 ciInstance* ciMethod::method_handle_type() { |
| 731 check_is_loaded(); | |
| 732 VM_ENTRY_MARK; | |
| 733 oop mtype = get_methodOop()->method_handle_type(); | |
| 734 return CURRENT_THREAD_ENV->get_object(mtype)->as_instance(); | |
| 735 } | |
| 736 | |
| 737 | |
| 738 // ------------------------------------------------------------------ | |
| 0 | 739 // ciMethod::build_method_data |
| 740 // | |
| 741 // Generate new methodDataOop objects at compile time. | |
| 742 void ciMethod::build_method_data(methodHandle h_m) { | |
| 743 EXCEPTION_CONTEXT; | |
| 744 if (is_native() || is_abstract() || h_m()->is_accessor()) return; | |
| 745 if (h_m()->method_data() == NULL) { | |
| 746 methodOopDesc::build_interpreter_method_data(h_m, THREAD); | |
| 747 if (HAS_PENDING_EXCEPTION) { | |
| 748 CLEAR_PENDING_EXCEPTION; | |
| 749 } | |
| 750 } | |
| 751 if (h_m()->method_data() != NULL) { | |
| 752 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
| 753 _method_data->load_data(); | |
| 754 } else { | |
| 755 _method_data = CURRENT_ENV->get_empty_methodData(); | |
| 756 } | |
| 757 } | |
| 758 | |
| 759 // public, retroactive version | |
| 760 void ciMethod::build_method_data() { | |
| 761 if (_method_data == NULL || _method_data->is_empty()) { | |
| 762 GUARDED_VM_ENTRY({ | |
| 763 build_method_data(get_methodOop()); | |
| 764 }); | |
| 765 } | |
| 766 } | |
| 767 | |
| 768 | |
| 769 // ------------------------------------------------------------------ | |
| 770 // ciMethod::method_data | |
| 771 // | |
| 772 ciMethodData* ciMethod::method_data() { | |
| 773 if (_method_data != NULL) { | |
| 774 return _method_data; | |
| 775 } | |
| 776 VM_ENTRY_MARK; | |
| 777 ciEnv* env = CURRENT_ENV; | |
| 778 Thread* my_thread = JavaThread::current(); | |
| 779 methodHandle h_m(my_thread, get_methodOop()); | |
| 780 | |
| 781 if (Tier1UpdateMethodData && is_tier1_compile(env->comp_level())) { | |
| 782 build_method_data(h_m); | |
| 783 } | |
| 784 | |
| 785 if (h_m()->method_data() != NULL) { | |
| 786 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
| 787 _method_data->load_data(); | |
| 788 } else { | |
| 789 _method_data = CURRENT_ENV->get_empty_methodData(); | |
| 790 } | |
| 791 return _method_data; | |
| 792 | |
| 793 } | |
| 794 | |
| 795 | |
| 796 // ------------------------------------------------------------------ | |
| 797 // ciMethod::will_link | |
| 798 // | |
| 799 // Will this method link in a specific calling context? | |
| 800 bool ciMethod::will_link(ciKlass* accessing_klass, | |
| 801 ciKlass* declared_method_holder, | |
| 802 Bytecodes::Code bc) { | |
| 803 if (!is_loaded()) { | |
| 804 // Method lookup failed. | |
| 805 return false; | |
| 806 } | |
| 807 | |
| 808 // The link checks have been front-loaded into the get_method | |
| 809 // call. This method (ciMethod::will_link()) will be removed | |
| 810 // in the future. | |
| 811 | |
| 812 return true; | |
| 813 } | |
| 814 | |
| 815 // ------------------------------------------------------------------ | |
| 816 // ciMethod::should_exclude | |
| 817 // | |
| 818 // Should this method be excluded from compilation? | |
| 819 bool ciMethod::should_exclude() { | |
| 820 check_is_loaded(); | |
| 821 VM_ENTRY_MARK; | |
| 822 methodHandle mh(THREAD, get_methodOop()); | |
| 823 bool ignore; | |
| 824 return CompilerOracle::should_exclude(mh, ignore); | |
| 825 } | |
| 826 | |
| 827 // ------------------------------------------------------------------ | |
| 828 // ciMethod::should_inline | |
| 829 // | |
| 830 // Should this method be inlined during compilation? | |
| 831 bool ciMethod::should_inline() { | |
| 832 check_is_loaded(); | |
| 833 VM_ENTRY_MARK; | |
| 834 methodHandle mh(THREAD, get_methodOop()); | |
| 835 return CompilerOracle::should_inline(mh); | |
| 836 } | |
| 837 | |
| 838 // ------------------------------------------------------------------ | |
| 839 // ciMethod::should_not_inline | |
| 840 // | |
| 841 // Should this method be disallowed from inlining during compilation? | |
| 842 bool ciMethod::should_not_inline() { | |
| 843 check_is_loaded(); | |
| 844 VM_ENTRY_MARK; | |
| 845 methodHandle mh(THREAD, get_methodOop()); | |
| 846 return CompilerOracle::should_not_inline(mh); | |
| 847 } | |
| 848 | |
| 849 // ------------------------------------------------------------------ | |
| 850 // ciMethod::should_print_assembly | |
| 851 // | |
| 852 // Should the compiler print the generated code for this method? | |
| 853 bool ciMethod::should_print_assembly() { | |
| 854 check_is_loaded(); | |
| 855 VM_ENTRY_MARK; | |
| 856 methodHandle mh(THREAD, get_methodOop()); | |
| 857 return CompilerOracle::should_print(mh); | |
| 858 } | |
| 859 | |
| 860 // ------------------------------------------------------------------ | |
| 861 // ciMethod::break_at_execute | |
| 862 // | |
| 863 // Should the compiler insert a breakpoint into the generated code | |
| 864 // method? | |
| 865 bool ciMethod::break_at_execute() { | |
| 866 check_is_loaded(); | |
| 867 VM_ENTRY_MARK; | |
| 868 methodHandle mh(THREAD, get_methodOop()); | |
| 869 return CompilerOracle::should_break_at(mh); | |
| 870 } | |
| 871 | |
| 872 // ------------------------------------------------------------------ | |
| 873 // ciMethod::has_option | |
| 874 // | |
| 875 bool ciMethod::has_option(const char* option) { | |
| 876 check_is_loaded(); | |
| 877 VM_ENTRY_MARK; | |
| 878 methodHandle mh(THREAD, get_methodOop()); | |
| 879 return CompilerOracle::has_option_string(mh, option); | |
| 880 } | |
| 881 | |
| 882 // ------------------------------------------------------------------ | |
| 883 // ciMethod::can_be_compiled | |
| 884 // | |
| 885 // Have previous compilations of this method succeeded? | |
| 886 bool ciMethod::can_be_compiled() { | |
| 887 check_is_loaded(); | |
| 888 return _is_compilable; | |
| 889 } | |
| 890 | |
| 891 // ------------------------------------------------------------------ | |
| 892 // ciMethod::set_not_compilable | |
| 893 // | |
| 894 // Tell the VM that this method cannot be compiled at all. | |
| 895 void ciMethod::set_not_compilable() { | |
| 896 check_is_loaded(); | |
| 897 VM_ENTRY_MARK; | |
| 898 _is_compilable = false; | |
| 899 get_methodOop()->set_not_compilable(); | |
| 900 } | |
| 901 | |
| 902 // ------------------------------------------------------------------ | |
| 903 // ciMethod::can_be_osr_compiled | |
| 904 // | |
| 905 // Have previous compilations of this method succeeded? | |
| 906 // | |
| 907 // Implementation note: the VM does not currently keep track | |
| 908 // of failed OSR compilations per bci. The entry_bci parameter | |
| 909 // is currently unused. | |
| 910 bool ciMethod::can_be_osr_compiled(int entry_bci) { | |
| 911 check_is_loaded(); | |
| 912 VM_ENTRY_MARK; | |
| 913 return !get_methodOop()->access_flags().is_not_osr_compilable(); | |
| 914 } | |
| 915 | |
| 916 // ------------------------------------------------------------------ | |
| 917 // ciMethod::has_compiled_code | |
| 918 bool ciMethod::has_compiled_code() { | |
| 919 VM_ENTRY_MARK; | |
| 920 return get_methodOop()->code() != NULL; | |
| 921 } | |
| 922 | |
| 923 // ------------------------------------------------------------------ | |
| 924 // ciMethod::instructions_size | |
| 925 // This is a rough metric for "fat" methods, compared | |
| 926 // before inlining with InlineSmallCode. | |
| 927 // The CodeBlob::instructions_size accessor includes | |
| 928 // junk like exception handler, stubs, and constant table, | |
| 929 // which are not highly relevant to an inlined method. | |
| 930 // So we use the more specific accessor nmethod::code_size. | |
| 931 int ciMethod::instructions_size() { | |
| 932 GUARDED_VM_ENTRY( | |
| 933 nmethod* code = get_methodOop()->code(); | |
| 934 // if there's no compiled code or the code was produced by the | |
| 935 // tier1 profiler return 0 for the code size. This should | |
| 936 // probably be based on the compilation level of the nmethod but | |
| 937 // that currently isn't properly recorded. | |
| 938 if (code == NULL || | |
| 939 (TieredCompilation && code->compiler() != NULL && code->compiler()->is_c1())) { | |
| 940 return 0; | |
| 941 } | |
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942 return code->code_end() - code->verified_entry_point(); |
| 0 | 943 ) |
| 944 } | |
| 945 | |
| 946 // ------------------------------------------------------------------ | |
| 947 // ciMethod::log_nmethod_identity | |
| 948 void ciMethod::log_nmethod_identity(xmlStream* log) { | |
| 949 GUARDED_VM_ENTRY( | |
| 950 nmethod* code = get_methodOop()->code(); | |
| 951 if (code != NULL) { | |
| 952 code->log_identity(log); | |
| 953 } | |
| 954 ) | |
| 955 } | |
| 956 | |
| 957 // ------------------------------------------------------------------ | |
| 958 // ciMethod::is_not_reached | |
| 959 bool ciMethod::is_not_reached(int bci) { | |
| 960 check_is_loaded(); | |
| 961 VM_ENTRY_MARK; | |
| 962 return Interpreter::is_not_reached( | |
| 963 methodHandle(THREAD, get_methodOop()), bci); | |
| 964 } | |
| 965 | |
| 966 // ------------------------------------------------------------------ | |
| 967 // ciMethod::was_never_executed | |
| 968 bool ciMethod::was_executed_more_than(int times) { | |
| 969 VM_ENTRY_MARK; | |
| 970 return get_methodOop()->was_executed_more_than(times); | |
| 971 } | |
| 972 | |
| 973 // ------------------------------------------------------------------ | |
| 974 // ciMethod::has_unloaded_classes_in_signature | |
| 975 bool ciMethod::has_unloaded_classes_in_signature() { | |
| 976 VM_ENTRY_MARK; | |
| 977 { | |
| 978 EXCEPTION_MARK; | |
| 979 methodHandle m(THREAD, get_methodOop()); | |
| 980 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); | |
| 981 if( HAS_PENDING_EXCEPTION ) { | |
| 982 CLEAR_PENDING_EXCEPTION; | |
| 983 return true; // Declare that we may have unloaded classes | |
| 984 } | |
| 985 return has_unloaded; | |
| 986 } | |
| 987 } | |
| 988 | |
| 989 // ------------------------------------------------------------------ | |
| 990 // ciMethod::is_klass_loaded | |
| 991 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { | |
| 992 VM_ENTRY_MARK; | |
| 993 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved); | |
| 994 } | |
| 995 | |
| 996 // ------------------------------------------------------------------ | |
| 997 // ciMethod::check_call | |
| 998 bool ciMethod::check_call(int refinfo_index, bool is_static) const { | |
| 999 VM_ENTRY_MARK; | |
| 1000 { | |
| 1001 EXCEPTION_MARK; | |
| 1002 HandleMark hm(THREAD); | |
| 1003 constantPoolHandle pool (THREAD, get_methodOop()->constants()); | |
| 1004 methodHandle spec_method; | |
| 1005 KlassHandle spec_klass; | |
| 1006 LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD); | |
| 1007 if (HAS_PENDING_EXCEPTION) { | |
| 1008 CLEAR_PENDING_EXCEPTION; | |
| 1009 return false; | |
| 1010 } else { | |
| 1011 return (spec_method->is_static() == is_static); | |
| 1012 } | |
| 1013 } | |
| 1014 return false; | |
| 1015 } | |
| 1016 | |
| 1017 // ------------------------------------------------------------------ | |
| 1018 // ciMethod::print_codes | |
| 1019 // | |
| 1020 // Print the bytecodes for this method. | |
| 1021 void ciMethod::print_codes_on(outputStream* st) { | |
| 1022 check_is_loaded(); | |
| 1023 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);) | |
| 1024 } | |
| 1025 | |
| 1026 | |
| 1027 #define FETCH_FLAG_FROM_VM(flag_accessor) { \ | |
| 1028 check_is_loaded(); \ | |
| 1029 VM_ENTRY_MARK; \ | |
| 1030 return get_methodOop()->flag_accessor(); \ | |
| 1031 } | |
| 1032 | |
| 1033 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } | |
| 1034 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } | |
| 1035 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } | |
| 1036 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } | |
| 1037 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } | |
| 1038 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } | |
| 1039 | |
| 1040 BCEscapeAnalyzer *ciMethod::get_bcea() { | |
|
1648
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1041 #ifdef COMPILER2 |
| 0 | 1042 if (_bcea == NULL) { |
| 1043 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); | |
| 1044 } | |
| 1045 return _bcea; | |
|
1648
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1046 #else // COMPILER2 |
|
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1047 ShouldNotReachHere(); |
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1048 return NULL; |
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1049 #endif // COMPILER2 |
| 0 | 1050 } |
| 1051 | |
| 1052 ciMethodBlocks *ciMethod::get_method_blocks() { | |
| 1053 Arena *arena = CURRENT_ENV->arena(); | |
| 1054 if (_method_blocks == NULL) { | |
| 1055 _method_blocks = new (arena) ciMethodBlocks(arena, this); | |
| 1056 } | |
| 1057 return _method_blocks; | |
| 1058 } | |
| 1059 | |
| 1060 #undef FETCH_FLAG_FROM_VM | |
| 1061 | |
| 1062 | |
| 1063 // ------------------------------------------------------------------ | |
| 1064 // ciMethod::print_codes | |
| 1065 // | |
| 1066 // Print a range of the bytecodes for this method. | |
| 1067 void ciMethod::print_codes_on(int from, int to, outputStream* st) { | |
| 1068 check_is_loaded(); | |
| 1069 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);) | |
| 1070 } | |
| 1071 | |
| 1072 // ------------------------------------------------------------------ | |
| 1073 // ciMethod::print_name | |
| 1074 // | |
| 1075 // Print the name of this method, including signature and some flags. | |
| 1076 void ciMethod::print_name(outputStream* st) { | |
| 1077 check_is_loaded(); | |
| 1078 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);) | |
| 1079 } | |
| 1080 | |
| 1081 // ------------------------------------------------------------------ | |
| 1082 // ciMethod::print_short_name | |
| 1083 // | |
| 1084 // Print the name of this method, without signature. | |
| 1085 void ciMethod::print_short_name(outputStream* st) { | |
| 1086 check_is_loaded(); | |
| 1087 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);) | |
| 1088 } | |
| 1089 | |
| 1090 // ------------------------------------------------------------------ | |
| 1091 // ciMethod::print_impl | |
| 1092 // | |
| 1093 // Implementation of the print method. | |
| 1094 void ciMethod::print_impl(outputStream* st) { | |
| 1095 ciObject::print_impl(st); | |
| 1096 st->print(" name="); | |
| 1097 name()->print_symbol_on(st); | |
| 1098 st->print(" holder="); | |
| 1099 holder()->print_name_on(st); | |
| 1100 st->print(" signature="); | |
| 1101 signature()->as_symbol()->print_symbol_on(st); | |
| 1102 if (is_loaded()) { | |
| 1103 st->print(" loaded=true flags="); | |
| 1104 flags().print_member_flags(st); | |
| 1105 } else { | |
| 1106 st->print(" loaded=false"); | |
| 1107 } | |
| 1108 } |