annotate src/share/vm/ci/ciMethod.cpp @ 780:c96bf21b756f

6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits Summary: Cache Jvmti and DTrace flags used by Compiler. Reviewed-by: never
author kvn
date Fri, 08 May 2009 10:44:20 -0700
parents e5b0439ef4ae
children 3a2aa26bdc58
rev   line source
duke@0 1 /*
jrose@710 2 * Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
duke@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@0 4 *
duke@0 5 * This code is free software; you can redistribute it and/or modify it
duke@0 6 * under the terms of the GNU General Public License version 2 only, as
duke@0 7 * published by the Free Software Foundation.
duke@0 8 *
duke@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@0 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@0 13 * accompanied this code).
duke@0 14 *
duke@0 15 * You should have received a copy of the GNU General Public License version
duke@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@0 18 *
duke@0 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@0 20 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@0 21 * have any questions.
duke@0 22 *
duke@0 23 */
duke@0 24
duke@0 25 #include "incls/_precompiled.incl"
duke@0 26 #include "incls/_ciMethod.cpp.incl"
duke@0 27
duke@0 28 // ciMethod
duke@0 29 //
duke@0 30 // This class represents a methodOop in the HotSpot virtual
duke@0 31 // machine.
duke@0 32
duke@0 33
duke@0 34 // ------------------------------------------------------------------
duke@0 35 // ciMethod::ciMethod
duke@0 36 //
duke@0 37 // Loaded method.
duke@0 38 ciMethod::ciMethod(methodHandle h_m) : ciObject(h_m) {
duke@0 39 assert(h_m() != NULL, "no null method");
duke@0 40
duke@0 41 // These fields are always filled in in loaded methods.
duke@0 42 _flags = ciFlags(h_m()->access_flags());
duke@0 43
duke@0 44 // Easy to compute, so fill them in now.
duke@0 45 _max_stack = h_m()->max_stack();
duke@0 46 _max_locals = h_m()->max_locals();
duke@0 47 _code_size = h_m()->code_size();
duke@0 48 _intrinsic_id = h_m()->intrinsic_id();
duke@0 49 _handler_count = h_m()->exception_table()->length() / 4;
duke@0 50 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes();
duke@0 51 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching();
duke@0 52 _is_compilable = !h_m()->is_not_compilable();
duke@0 53 // Lazy fields, filled in on demand. Require allocation.
duke@0 54 _code = NULL;
duke@0 55 _exception_handlers = NULL;
duke@0 56 _liveness = NULL;
duke@0 57 _bcea = NULL;
duke@0 58 _method_blocks = NULL;
duke@0 59 #ifdef COMPILER2
duke@0 60 _flow = NULL;
duke@0 61 #endif // COMPILER2
duke@0 62
kvn@780 63 ciEnv *env = CURRENT_ENV;
kvn@780 64 if (env->jvmti_can_hotswap_or_post_breakpoint() && _is_compilable) {
duke@0 65 // 6328518 check hotswap conditions under the right lock.
duke@0 66 MutexLocker locker(Compile_lock);
duke@0 67 if (Dependencies::check_evol_method(h_m()) != NULL) {
duke@0 68 _is_compilable = false;
duke@0 69 }
duke@0 70 } else {
duke@0 71 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
duke@0 72 }
duke@0 73
duke@0 74 if (instanceKlass::cast(h_m()->method_holder())->is_linked()) {
duke@0 75 _can_be_statically_bound = h_m()->can_be_statically_bound();
duke@0 76 } else {
duke@0 77 // Have to use a conservative value in this case.
duke@0 78 _can_be_statically_bound = false;
duke@0 79 }
duke@0 80
duke@0 81 // Adjust the definition of this condition to be more useful:
duke@0 82 // %%% take these conditions into account in vtable generation
duke@0 83 if (!_can_be_statically_bound && h_m()->is_private())
duke@0 84 _can_be_statically_bound = true;
duke@0 85 if (_can_be_statically_bound && h_m()->is_abstract())
duke@0 86 _can_be_statically_bound = false;
duke@0 87
duke@0 88 // generating _signature may allow GC and therefore move m.
duke@0 89 // These fields are always filled in.
duke@0 90 _name = env->get_object(h_m()->name())->as_symbol();
duke@0 91 _holder = env->get_object(h_m()->method_holder())->as_instance_klass();
duke@0 92 ciSymbol* sig_symbol = env->get_object(h_m()->signature())->as_symbol();
duke@0 93 _signature = new (env->arena()) ciSignature(_holder, sig_symbol);
duke@0 94 _method_data = NULL;
duke@0 95 // Take a snapshot of these values, so they will be commensurate with the MDO.
duke@0 96 if (ProfileInterpreter) {
duke@0 97 int invcnt = h_m()->interpreter_invocation_count();
duke@0 98 // if the value overflowed report it as max int
duke@0 99 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;
duke@0 100 _interpreter_throwout_count = h_m()->interpreter_throwout_count();
duke@0 101 } else {
duke@0 102 _interpreter_invocation_count = 0;
duke@0 103 _interpreter_throwout_count = 0;
duke@0 104 }
duke@0 105 if (_interpreter_invocation_count == 0)
duke@0 106 _interpreter_invocation_count = 1;
duke@0 107 }
duke@0 108
duke@0 109
duke@0 110 // ------------------------------------------------------------------
duke@0 111 // ciMethod::ciMethod
duke@0 112 //
duke@0 113 // Unloaded method.
duke@0 114 ciMethod::ciMethod(ciInstanceKlass* holder,
duke@0 115 ciSymbol* name,
duke@0 116 ciSymbol* signature) : ciObject(ciMethodKlass::make()) {
duke@0 117 // These fields are always filled in.
duke@0 118 _name = name;
duke@0 119 _holder = holder;
duke@0 120 _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, signature);
duke@0 121 _intrinsic_id = vmIntrinsics::_none;
duke@0 122 _liveness = NULL;
duke@0 123 _can_be_statically_bound = false;
duke@0 124 _bcea = NULL;
duke@0 125 _method_blocks = NULL;
duke@0 126 _method_data = NULL;
duke@0 127 #ifdef COMPILER2
duke@0 128 _flow = NULL;
duke@0 129 #endif // COMPILER2
duke@0 130 }
duke@0 131
duke@0 132
duke@0 133 // ------------------------------------------------------------------
duke@0 134 // ciMethod::load_code
duke@0 135 //
duke@0 136 // Load the bytecodes and exception handler table for this method.
duke@0 137 void ciMethod::load_code() {
duke@0 138 VM_ENTRY_MARK;
duke@0 139 assert(is_loaded(), "only loaded methods have code");
duke@0 140
duke@0 141 methodOop me = get_methodOop();
duke@0 142 Arena* arena = CURRENT_THREAD_ENV->arena();
duke@0 143
duke@0 144 // Load the bytecodes.
duke@0 145 _code = (address)arena->Amalloc(code_size());
duke@0 146 memcpy(_code, me->code_base(), code_size());
duke@0 147
duke@0 148 // Revert any breakpoint bytecodes in ci's copy
kvn@27 149 if (me->number_of_breakpoints() > 0) {
duke@0 150 BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints();
duke@0 151 for (; bp != NULL; bp = bp->next()) {
duke@0 152 if (bp->match(me)) {
duke@0 153 code_at_put(bp->bci(), bp->orig_bytecode());
duke@0 154 }
duke@0 155 }
duke@0 156 }
duke@0 157
duke@0 158 // And load the exception table.
duke@0 159 typeArrayOop exc_table = me->exception_table();
duke@0 160
duke@0 161 // Allocate one extra spot in our list of exceptions. This
duke@0 162 // last entry will be used to represent the possibility that
duke@0 163 // an exception escapes the method. See ciExceptionHandlerStream
duke@0 164 // for details.
duke@0 165 _exception_handlers =
duke@0 166 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*)
duke@0 167 * (_handler_count + 1));
duke@0 168 if (_handler_count > 0) {
duke@0 169 for (int i=0; i<_handler_count; i++) {
duke@0 170 int base = i*4;
duke@0 171 _exception_handlers[i] = new (arena) ciExceptionHandler(
duke@0 172 holder(),
duke@0 173 /* start */ exc_table->int_at(base),
duke@0 174 /* limit */ exc_table->int_at(base+1),
duke@0 175 /* goto pc */ exc_table->int_at(base+2),
duke@0 176 /* cp index */ exc_table->int_at(base+3));
duke@0 177 }
duke@0 178 }
duke@0 179
duke@0 180 // Put an entry at the end of our list to represent the possibility
duke@0 181 // of exceptional exit.
duke@0 182 _exception_handlers[_handler_count] =
duke@0 183 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0);
duke@0 184
duke@0 185 if (CIPrintMethodCodes) {
duke@0 186 print_codes();
duke@0 187 }
duke@0 188 }
duke@0 189
duke@0 190
duke@0 191 // ------------------------------------------------------------------
duke@0 192 // ciMethod::has_linenumber_table
duke@0 193 //
duke@0 194 // length unknown until decompression
duke@0 195 bool ciMethod::has_linenumber_table() const {
duke@0 196 check_is_loaded();
duke@0 197 VM_ENTRY_MARK;
duke@0 198 return get_methodOop()->has_linenumber_table();
duke@0 199 }
duke@0 200
duke@0 201
duke@0 202 // ------------------------------------------------------------------
duke@0 203 // ciMethod::compressed_linenumber_table
duke@0 204 u_char* ciMethod::compressed_linenumber_table() const {
duke@0 205 check_is_loaded();
duke@0 206 VM_ENTRY_MARK;
duke@0 207 return get_methodOop()->compressed_linenumber_table();
duke@0 208 }
duke@0 209
duke@0 210
duke@0 211 // ------------------------------------------------------------------
duke@0 212 // ciMethod::line_number_from_bci
duke@0 213 int ciMethod::line_number_from_bci(int bci) const {
duke@0 214 check_is_loaded();
duke@0 215 VM_ENTRY_MARK;
duke@0 216 return get_methodOop()->line_number_from_bci(bci);
duke@0 217 }
duke@0 218
duke@0 219
duke@0 220 // ------------------------------------------------------------------
duke@0 221 // ciMethod::vtable_index
duke@0 222 //
duke@0 223 // Get the position of this method's entry in the vtable, if any.
duke@0 224 int ciMethod::vtable_index() {
duke@0 225 check_is_loaded();
duke@0 226 assert(holder()->is_linked(), "must be linked");
duke@0 227 VM_ENTRY_MARK;
duke@0 228 return get_methodOop()->vtable_index();
duke@0 229 }
duke@0 230
duke@0 231
duke@0 232 // ------------------------------------------------------------------
duke@0 233 // ciMethod::native_entry
duke@0 234 //
duke@0 235 // Get the address of this method's native code, if any.
duke@0 236 address ciMethod::native_entry() {
duke@0 237 check_is_loaded();
duke@0 238 assert(flags().is_native(), "must be native method");
duke@0 239 VM_ENTRY_MARK;
duke@0 240 methodOop method = get_methodOop();
duke@0 241 address entry = method->native_function();
duke@0 242 assert(entry != NULL, "must be valid entry point");
duke@0 243 return entry;
duke@0 244 }
duke@0 245
duke@0 246
duke@0 247 // ------------------------------------------------------------------
duke@0 248 // ciMethod::interpreter_entry
duke@0 249 //
duke@0 250 // Get the entry point for running this method in the interpreter.
duke@0 251 address ciMethod::interpreter_entry() {
duke@0 252 check_is_loaded();
duke@0 253 VM_ENTRY_MARK;
duke@0 254 methodHandle mh(THREAD, get_methodOop());
duke@0 255 return Interpreter::entry_for_method(mh);
duke@0 256 }
duke@0 257
duke@0 258
duke@0 259 // ------------------------------------------------------------------
duke@0 260 // ciMethod::uses_balanced_monitors
duke@0 261 //
duke@0 262 // Does this method use monitors in a strict stack-disciplined manner?
duke@0 263 bool ciMethod::has_balanced_monitors() {
duke@0 264 check_is_loaded();
duke@0 265 if (_balanced_monitors) return true;
duke@0 266
duke@0 267 // Analyze the method to see if monitors are used properly.
duke@0 268 VM_ENTRY_MARK;
duke@0 269 methodHandle method(THREAD, get_methodOop());
duke@0 270 assert(method->has_monitor_bytecodes(), "should have checked this");
duke@0 271
duke@0 272 // Check to see if a previous compilation computed the
duke@0 273 // monitor-matching analysis.
duke@0 274 if (method->guaranteed_monitor_matching()) {
duke@0 275 _balanced_monitors = true;
duke@0 276 return true;
duke@0 277 }
duke@0 278
duke@0 279 {
duke@0 280 EXCEPTION_MARK;
duke@0 281 ResourceMark rm(THREAD);
duke@0 282 GeneratePairingInfo gpi(method);
duke@0 283 gpi.compute_map(CATCH);
duke@0 284 if (!gpi.monitor_safe()) {
duke@0 285 return false;
duke@0 286 }
duke@0 287 method->set_guaranteed_monitor_matching();
duke@0 288 _balanced_monitors = true;
duke@0 289 }
duke@0 290 return true;
duke@0 291 }
duke@0 292
duke@0 293
duke@0 294 // ------------------------------------------------------------------
duke@0 295 // ciMethod::get_flow_analysis
duke@0 296 ciTypeFlow* ciMethod::get_flow_analysis() {
duke@0 297 #ifdef COMPILER2
duke@0 298 if (_flow == NULL) {
duke@0 299 ciEnv* env = CURRENT_ENV;
duke@0 300 _flow = new (env->arena()) ciTypeFlow(env, this);
duke@0 301 _flow->do_flow();
duke@0 302 }
duke@0 303 return _flow;
duke@0 304 #else // COMPILER2
duke@0 305 ShouldNotReachHere();
duke@0 306 return NULL;
duke@0 307 #endif // COMPILER2
duke@0 308 }
duke@0 309
duke@0 310
duke@0 311 // ------------------------------------------------------------------
duke@0 312 // ciMethod::get_osr_flow_analysis
duke@0 313 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) {
duke@0 314 #ifdef COMPILER2
duke@0 315 // OSR entry points are always place after a call bytecode of some sort
duke@0 316 assert(osr_bci >= 0, "must supply valid OSR entry point");
duke@0 317 ciEnv* env = CURRENT_ENV;
duke@0 318 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci);
duke@0 319 flow->do_flow();
duke@0 320 return flow;
duke@0 321 #else // COMPILER2
duke@0 322 ShouldNotReachHere();
duke@0 323 return NULL;
duke@0 324 #endif // COMPILER2
duke@0 325 }
duke@0 326
duke@0 327 // ------------------------------------------------------------------
duke@0 328 // ciMethod::liveness_at_bci
duke@0 329 //
duke@0 330 // Which local variables are live at a specific bci?
duke@0 331 MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
duke@0 332 check_is_loaded();
duke@0 333 if (_liveness == NULL) {
duke@0 334 // Create the liveness analyzer.
duke@0 335 Arena* arena = CURRENT_ENV->arena();
duke@0 336 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 337 _liveness->compute_liveness();
duke@0 338 }
duke@0 339 MethodLivenessResult result = _liveness->get_liveness_at(bci);
kvn@780 340 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) {
duke@0 341 // Keep all locals live for the user's edification and amusement.
duke@0 342 result.at_put_range(0, result.size(), true);
duke@0 343 }
duke@0 344 return result;
duke@0 345 }
duke@0 346
duke@0 347 // ciMethod::live_local_oops_at_bci
duke@0 348 //
duke@0 349 // find all the live oops in the locals array for a particular bci
duke@0 350 // Compute what the interpreter believes by using the interpreter
duke@0 351 // oopmap generator. This is used as a double check during osr to
duke@0 352 // guard against conservative result from MethodLiveness making us
duke@0 353 // think a dead oop is live. MethodLiveness is conservative in the
duke@0 354 // sense that it may consider locals to be live which cannot be live,
duke@0 355 // like in the case where a local could contain an oop or a primitive
duke@0 356 // along different paths. In that case the local must be dead when
duke@0 357 // those paths merge. Since the interpreter's viewpoint is used when
duke@0 358 // gc'ing an interpreter frame we need to use its viewpoint during
duke@0 359 // OSR when loading the locals.
duke@0 360
duke@0 361 BitMap ciMethod::live_local_oops_at_bci(int bci) {
duke@0 362 VM_ENTRY_MARK;
duke@0 363 InterpreterOopMap mask;
duke@0 364 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask);
duke@0 365 int mask_size = max_locals();
duke@0 366 BitMap result(mask_size);
duke@0 367 result.clear();
duke@0 368 int i;
duke@0 369 for (i = 0; i < mask_size ; i++ ) {
duke@0 370 if (mask.is_oop(i)) result.set_bit(i);
duke@0 371 }
duke@0 372 return result;
duke@0 373 }
duke@0 374
duke@0 375
duke@0 376 #ifdef COMPILER1
duke@0 377 // ------------------------------------------------------------------
duke@0 378 // ciMethod::bci_block_start
duke@0 379 //
duke@0 380 // Marks all bcis where a new basic block starts
duke@0 381 const BitMap ciMethod::bci_block_start() {
duke@0 382 check_is_loaded();
duke@0 383 if (_liveness == NULL) {
duke@0 384 // Create the liveness analyzer.
duke@0 385 Arena* arena = CURRENT_ENV->arena();
duke@0 386 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 387 _liveness->compute_liveness();
duke@0 388 }
duke@0 389
duke@0 390 return _liveness->get_bci_block_start();
duke@0 391 }
duke@0 392 #endif // COMPILER1
duke@0 393
duke@0 394
duke@0 395 // ------------------------------------------------------------------
duke@0 396 // ciMethod::call_profile_at_bci
duke@0 397 //
duke@0 398 // Get the ciCallProfile for the invocation of this method.
duke@0 399 // Also reports receiver types for non-call type checks (if TypeProfileCasts).
duke@0 400 ciCallProfile ciMethod::call_profile_at_bci(int bci) {
duke@0 401 ResourceMark rm;
duke@0 402 ciCallProfile result;
duke@0 403 if (method_data() != NULL && method_data()->is_mature()) {
duke@0 404 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 405 if (data != NULL && data->is_CounterData()) {
duke@0 406 // Every profiled call site has a counter.
duke@0 407 int count = data->as_CounterData()->count();
duke@0 408
duke@0 409 if (!data->is_ReceiverTypeData()) {
duke@0 410 result._receiver_count[0] = 0; // that's a definite zero
duke@0 411 } else { // ReceiverTypeData is a subclass of CounterData
duke@0 412 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
duke@0 413 // In addition, virtual call sites have receiver type information
duke@0 414 int receivers_count_total = 0;
duke@0 415 int morphism = 0;
duke@0 416 for (uint i = 0; i < call->row_limit(); i++) {
duke@0 417 ciKlass* receiver = call->receiver(i);
duke@0 418 if (receiver == NULL) continue;
duke@0 419 morphism += 1;
duke@0 420 int rcount = call->receiver_count(i);
duke@0 421 if (rcount == 0) rcount = 1; // Should be valid value
duke@0 422 receivers_count_total += rcount;
duke@0 423 // Add the receiver to result data.
duke@0 424 result.add_receiver(receiver, rcount);
duke@0 425 // If we extend profiling to record methods,
duke@0 426 // we will set result._method also.
duke@0 427 }
duke@0 428 // Determine call site's morphism.
duke@0 429 // The call site count could be == (receivers_count_total + 1)
duke@0 430 // not only in the case of a polymorphic call but also in the case
duke@0 431 // when a method data snapshot is taken after the site count was updated
duke@0 432 // but before receivers counters were updated.
duke@0 433 if (morphism == result._limit) {
duke@0 434 // There were no array klasses and morphism <= MorphismLimit.
duke@0 435 if (morphism < ciCallProfile::MorphismLimit ||
duke@0 436 morphism == ciCallProfile::MorphismLimit &&
duke@0 437 (receivers_count_total+1) >= count) {
duke@0 438 result._morphism = morphism;
duke@0 439 }
duke@0 440 }
duke@0 441 // Make the count consistent if this is a call profile. If count is
duke@0 442 // zero or less, presume that this is a typecheck profile and
duke@0 443 // do nothing. Otherwise, increase count to be the sum of all
duke@0 444 // receiver's counts.
duke@0 445 if (count > 0) {
duke@0 446 if (count < receivers_count_total) {
duke@0 447 count = receivers_count_total;
duke@0 448 }
duke@0 449 }
duke@0 450 }
duke@0 451 result._count = count;
duke@0 452 }
duke@0 453 }
duke@0 454 return result;
duke@0 455 }
duke@0 456
duke@0 457 // ------------------------------------------------------------------
duke@0 458 // Add new receiver and sort data by receiver's profile count.
duke@0 459 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) {
duke@0 460 // Add new receiver and sort data by receiver's counts when we have space
duke@0 461 // for it otherwise replace the less called receiver (less called receiver
duke@0 462 // is placed to the last array element which is not used).
duke@0 463 // First array's element contains most called receiver.
duke@0 464 int i = _limit;
duke@0 465 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) {
duke@0 466 _receiver[i] = _receiver[i-1];
duke@0 467 _receiver_count[i] = _receiver_count[i-1];
duke@0 468 }
duke@0 469 _receiver[i] = receiver;
duke@0 470 _receiver_count[i] = receiver_count;
duke@0 471 if (_limit < MorphismLimit) _limit++;
duke@0 472 }
duke@0 473
duke@0 474 // ------------------------------------------------------------------
duke@0 475 // ciMethod::find_monomorphic_target
duke@0 476 //
duke@0 477 // Given a certain calling environment, find the monomorphic target
duke@0 478 // for the call. Return NULL if the call is not monomorphic in
duke@0 479 // its calling environment, or if there are only abstract methods.
duke@0 480 // The returned method is never abstract.
duke@0 481 // Note: If caller uses a non-null result, it must inform dependencies
duke@0 482 // via assert_unique_concrete_method or assert_leaf_type.
duke@0 483 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,
duke@0 484 ciInstanceKlass* callee_holder,
duke@0 485 ciInstanceKlass* actual_recv) {
duke@0 486 check_is_loaded();
duke@0 487
duke@0 488 if (actual_recv->is_interface()) {
duke@0 489 // %%% We cannot trust interface types, yet. See bug 6312651.
duke@0 490 return NULL;
duke@0 491 }
duke@0 492
duke@0 493 ciMethod* root_m = resolve_invoke(caller, actual_recv);
duke@0 494 if (root_m == NULL) {
duke@0 495 // Something went wrong looking up the actual receiver method.
duke@0 496 return NULL;
duke@0 497 }
duke@0 498 assert(!root_m->is_abstract(), "resolve_invoke promise");
duke@0 499
duke@0 500 // Make certain quick checks even if UseCHA is false.
duke@0 501
duke@0 502 // Is it private or final?
duke@0 503 if (root_m->can_be_statically_bound()) {
duke@0 504 return root_m;
duke@0 505 }
duke@0 506
duke@0 507 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) {
duke@0 508 // Easy case. There is no other place to put a method, so don't bother
duke@0 509 // to go through the VM_ENTRY_MARK and all the rest.
duke@0 510 return root_m;
duke@0 511 }
duke@0 512
duke@0 513 // Array methods (clone, hashCode, etc.) are always statically bound.
duke@0 514 // If we were to see an array type here, we'd return root_m.
duke@0 515 // However, this method processes only ciInstanceKlasses. (See 4962591.)
duke@0 516 // The inline_native_clone intrinsic narrows Object to T[] properly,
duke@0 517 // so there is no need to do the same job here.
duke@0 518
duke@0 519 if (!UseCHA) return NULL;
duke@0 520
duke@0 521 VM_ENTRY_MARK;
duke@0 522
duke@0 523 methodHandle target;
duke@0 524 {
duke@0 525 MutexLocker locker(Compile_lock);
duke@0 526 klassOop context = actual_recv->get_klassOop();
duke@0 527 target = Dependencies::find_unique_concrete_method(context,
duke@0 528 root_m->get_methodOop());
duke@0 529 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.
duke@0 530 }
duke@0 531
duke@0 532 #ifndef PRODUCT
duke@0 533 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) {
duke@0 534 tty->print("found a non-root unique target method");
duke@0 535 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name());
duke@0 536 tty->print(" method = ");
duke@0 537 target->print_short_name(tty);
duke@0 538 tty->cr();
duke@0 539 }
duke@0 540 #endif //PRODUCT
duke@0 541
duke@0 542 if (target() == NULL) {
duke@0 543 return NULL;
duke@0 544 }
duke@0 545 if (target() == root_m->get_methodOop()) {
duke@0 546 return root_m;
duke@0 547 }
duke@0 548 if (!root_m->is_public() &&
duke@0 549 !root_m->is_protected()) {
duke@0 550 // If we are going to reason about inheritance, it's easiest
duke@0 551 // if the method in question is public, protected, or private.
duke@0 552 // If the answer is not root_m, it is conservatively correct
duke@0 553 // to return NULL, even if the CHA encountered irrelevant
duke@0 554 // methods in other packages.
duke@0 555 // %%% TO DO: Work out logic for package-private methods
duke@0 556 // with the same name but different vtable indexes.
duke@0 557 return NULL;
duke@0 558 }
duke@0 559 return CURRENT_THREAD_ENV->get_object(target())->as_method();
duke@0 560 }
duke@0 561
duke@0 562 // ------------------------------------------------------------------
duke@0 563 // ciMethod::resolve_invoke
duke@0 564 //
duke@0 565 // Given a known receiver klass, find the target for the call.
duke@0 566 // Return NULL if the call has no target or the target is abstract.
duke@0 567 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) {
duke@0 568 check_is_loaded();
duke@0 569 VM_ENTRY_MARK;
duke@0 570
duke@0 571 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 572 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop());
duke@0 573 KlassHandle h_resolved (THREAD, holder()->get_klassOop());
duke@0 574 symbolHandle h_name (THREAD, name()->get_symbolOop());
duke@0 575 symbolHandle h_signature (THREAD, signature()->get_symbolOop());
duke@0 576
duke@0 577 methodHandle m;
duke@0 578 // Only do exact lookup if receiver klass has been linked. Otherwise,
duke@0 579 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 580 if (h_recv->oop_is_javaArray()
duke@0 581 ||
duke@0 582 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) {
duke@0 583 if (holder()->is_interface()) {
duke@0 584 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 585 } else {
duke@0 586 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 587 }
duke@0 588 }
duke@0 589
duke@0 590 if (m.is_null()) {
duke@0 591 // Return NULL only if there was a problem with lookup (uninitialized class, etc.)
duke@0 592 return NULL;
duke@0 593 }
duke@0 594
duke@0 595 ciMethod* result = this;
duke@0 596 if (m() != get_methodOop()) {
duke@0 597 result = CURRENT_THREAD_ENV->get_object(m())->as_method();
duke@0 598 }
duke@0 599
duke@0 600 // Don't return abstract methods because they aren't
duke@0 601 // optimizable or interesting.
duke@0 602 if (result->is_abstract()) {
duke@0 603 return NULL;
duke@0 604 } else {
duke@0 605 return result;
duke@0 606 }
duke@0 607 }
duke@0 608
duke@0 609 // ------------------------------------------------------------------
duke@0 610 // ciMethod::resolve_vtable_index
duke@0 611 //
duke@0 612 // Given a known receiver klass, find the vtable index for the call.
duke@0 613 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown.
duke@0 614 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) {
duke@0 615 check_is_loaded();
duke@0 616
duke@0 617 int vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 618 // Only do lookup if receiver klass has been linked. Otherwise,
duke@0 619 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 620 if (!receiver->is_interface()
duke@0 621 && (!receiver->is_instance_klass() ||
duke@0 622 receiver->as_instance_klass()->is_linked())) {
duke@0 623 VM_ENTRY_MARK;
duke@0 624
duke@0 625 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 626 KlassHandle h_recv (THREAD, receiver->get_klassOop());
duke@0 627 symbolHandle h_name (THREAD, name()->get_symbolOop());
duke@0 628 symbolHandle h_signature (THREAD, signature()->get_symbolOop());
duke@0 629
duke@0 630 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass);
duke@0 631 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
duke@0 632 // A statically bound method. Return "no such index".
duke@0 633 vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 634 }
duke@0 635 }
duke@0 636
duke@0 637 return vtable_index;
duke@0 638 }
duke@0 639
duke@0 640 // ------------------------------------------------------------------
duke@0 641 // ciMethod::interpreter_call_site_count
duke@0 642 int ciMethod::interpreter_call_site_count(int bci) {
duke@0 643 if (method_data() != NULL) {
duke@0 644 ResourceMark rm;
duke@0 645 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 646 if (data != NULL && data->is_CounterData()) {
duke@0 647 return scale_count(data->as_CounterData()->count());
duke@0 648 }
duke@0 649 }
duke@0 650 return -1; // unknown
duke@0 651 }
duke@0 652
duke@0 653 // ------------------------------------------------------------------
duke@0 654 // Adjust a CounterData count to be commensurate with
duke@0 655 // interpreter_invocation_count. If the MDO exists for
duke@0 656 // only 25% of the time the method exists, then the
duke@0 657 // counts in the MDO should be scaled by 4X, so that
duke@0 658 // they can be usefully and stably compared against the
duke@0 659 // invocation counts in methods.
duke@0 660 int ciMethod::scale_count(int count, float prof_factor) {
duke@0 661 if (count > 0 && method_data() != NULL) {
duke@0 662 int current_mileage = method_data()->current_mileage();
duke@0 663 int creation_mileage = method_data()->creation_mileage();
duke@0 664 int counter_life = current_mileage - creation_mileage;
duke@0 665 int method_life = interpreter_invocation_count();
duke@0 666 // counter_life due to backedge_counter could be > method_life
duke@0 667 if (counter_life > method_life)
duke@0 668 counter_life = method_life;
duke@0 669 if (0 < counter_life && counter_life <= method_life) {
duke@0 670 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5);
duke@0 671 count = (count > 0) ? count : 1;
duke@0 672 }
duke@0 673 }
duke@0 674 return count;
duke@0 675 }
duke@0 676
duke@0 677 // ------------------------------------------------------------------
jrose@710 678 // invokedynamic support
jrose@710 679 //
jrose@710 680 bool ciMethod::is_method_handle_invoke() {
jrose@710 681 check_is_loaded();
jrose@710 682 bool flag = ((flags().as_int() & JVM_MH_INVOKE_BITS) == JVM_MH_INVOKE_BITS);
jrose@710 683 #ifdef ASSERT
jrose@710 684 {
jrose@710 685 VM_ENTRY_MARK;
jrose@710 686 bool flag2 = get_methodOop()->is_method_handle_invoke();
jrose@710 687 assert(flag == flag2, "consistent");
jrose@710 688 }
jrose@710 689 #endif //ASSERT
jrose@710 690 return flag;
jrose@710 691 }
jrose@710 692
jrose@710 693 ciInstance* ciMethod::method_handle_type() {
jrose@710 694 check_is_loaded();
jrose@710 695 VM_ENTRY_MARK;
jrose@710 696 oop mtype = get_methodOop()->method_handle_type();
jrose@710 697 return CURRENT_THREAD_ENV->get_object(mtype)->as_instance();
jrose@710 698 }
jrose@710 699
jrose@710 700
jrose@710 701 // ------------------------------------------------------------------
duke@0 702 // ciMethod::build_method_data
duke@0 703 //
duke@0 704 // Generate new methodDataOop objects at compile time.
duke@0 705 void ciMethod::build_method_data(methodHandle h_m) {
duke@0 706 EXCEPTION_CONTEXT;
duke@0 707 if (is_native() || is_abstract() || h_m()->is_accessor()) return;
duke@0 708 if (h_m()->method_data() == NULL) {
duke@0 709 methodOopDesc::build_interpreter_method_data(h_m, THREAD);
duke@0 710 if (HAS_PENDING_EXCEPTION) {
duke@0 711 CLEAR_PENDING_EXCEPTION;
duke@0 712 }
duke@0 713 }
duke@0 714 if (h_m()->method_data() != NULL) {
duke@0 715 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 716 _method_data->load_data();
duke@0 717 } else {
duke@0 718 _method_data = CURRENT_ENV->get_empty_methodData();
duke@0 719 }
duke@0 720 }
duke@0 721
duke@0 722 // public, retroactive version
duke@0 723 void ciMethod::build_method_data() {
duke@0 724 if (_method_data == NULL || _method_data->is_empty()) {
duke@0 725 GUARDED_VM_ENTRY({
duke@0 726 build_method_data(get_methodOop());
duke@0 727 });
duke@0 728 }
duke@0 729 }
duke@0 730
duke@0 731
duke@0 732 // ------------------------------------------------------------------
duke@0 733 // ciMethod::method_data
duke@0 734 //
duke@0 735 ciMethodData* ciMethod::method_data() {
duke@0 736 if (_method_data != NULL) {
duke@0 737 return _method_data;
duke@0 738 }
duke@0 739 VM_ENTRY_MARK;
duke@0 740 ciEnv* env = CURRENT_ENV;
duke@0 741 Thread* my_thread = JavaThread::current();
duke@0 742 methodHandle h_m(my_thread, get_methodOop());
duke@0 743
duke@0 744 if (Tier1UpdateMethodData && is_tier1_compile(env->comp_level())) {
duke@0 745 build_method_data(h_m);
duke@0 746 }
duke@0 747
duke@0 748 if (h_m()->method_data() != NULL) {
duke@0 749 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 750 _method_data->load_data();
duke@0 751 } else {
duke@0 752 _method_data = CURRENT_ENV->get_empty_methodData();
duke@0 753 }
duke@0 754 return _method_data;
duke@0 755
duke@0 756 }
duke@0 757
duke@0 758
duke@0 759 // ------------------------------------------------------------------
duke@0 760 // ciMethod::will_link
duke@0 761 //
duke@0 762 // Will this method link in a specific calling context?
duke@0 763 bool ciMethod::will_link(ciKlass* accessing_klass,
duke@0 764 ciKlass* declared_method_holder,
duke@0 765 Bytecodes::Code bc) {
duke@0 766 if (!is_loaded()) {
duke@0 767 // Method lookup failed.
duke@0 768 return false;
duke@0 769 }
duke@0 770
duke@0 771 // The link checks have been front-loaded into the get_method
duke@0 772 // call. This method (ciMethod::will_link()) will be removed
duke@0 773 // in the future.
duke@0 774
duke@0 775 return true;
duke@0 776 }
duke@0 777
duke@0 778 // ------------------------------------------------------------------
duke@0 779 // ciMethod::should_exclude
duke@0 780 //
duke@0 781 // Should this method be excluded from compilation?
duke@0 782 bool ciMethod::should_exclude() {
duke@0 783 check_is_loaded();
duke@0 784 VM_ENTRY_MARK;
duke@0 785 methodHandle mh(THREAD, get_methodOop());
duke@0 786 bool ignore;
duke@0 787 return CompilerOracle::should_exclude(mh, ignore);
duke@0 788 }
duke@0 789
duke@0 790 // ------------------------------------------------------------------
duke@0 791 // ciMethod::should_inline
duke@0 792 //
duke@0 793 // Should this method be inlined during compilation?
duke@0 794 bool ciMethod::should_inline() {
duke@0 795 check_is_loaded();
duke@0 796 VM_ENTRY_MARK;
duke@0 797 methodHandle mh(THREAD, get_methodOop());
duke@0 798 return CompilerOracle::should_inline(mh);
duke@0 799 }
duke@0 800
duke@0 801 // ------------------------------------------------------------------
duke@0 802 // ciMethod::should_not_inline
duke@0 803 //
duke@0 804 // Should this method be disallowed from inlining during compilation?
duke@0 805 bool ciMethod::should_not_inline() {
duke@0 806 check_is_loaded();
duke@0 807 VM_ENTRY_MARK;
duke@0 808 methodHandle mh(THREAD, get_methodOop());
duke@0 809 return CompilerOracle::should_not_inline(mh);
duke@0 810 }
duke@0 811
duke@0 812 // ------------------------------------------------------------------
duke@0 813 // ciMethod::should_print_assembly
duke@0 814 //
duke@0 815 // Should the compiler print the generated code for this method?
duke@0 816 bool ciMethod::should_print_assembly() {
duke@0 817 check_is_loaded();
duke@0 818 VM_ENTRY_MARK;
duke@0 819 methodHandle mh(THREAD, get_methodOop());
duke@0 820 return CompilerOracle::should_print(mh);
duke@0 821 }
duke@0 822
duke@0 823 // ------------------------------------------------------------------
duke@0 824 // ciMethod::break_at_execute
duke@0 825 //
duke@0 826 // Should the compiler insert a breakpoint into the generated code
duke@0 827 // method?
duke@0 828 bool ciMethod::break_at_execute() {
duke@0 829 check_is_loaded();
duke@0 830 VM_ENTRY_MARK;
duke@0 831 methodHandle mh(THREAD, get_methodOop());
duke@0 832 return CompilerOracle::should_break_at(mh);
duke@0 833 }
duke@0 834
duke@0 835 // ------------------------------------------------------------------
duke@0 836 // ciMethod::has_option
duke@0 837 //
duke@0 838 bool ciMethod::has_option(const char* option) {
duke@0 839 check_is_loaded();
duke@0 840 VM_ENTRY_MARK;
duke@0 841 methodHandle mh(THREAD, get_methodOop());
duke@0 842 return CompilerOracle::has_option_string(mh, option);
duke@0 843 }
duke@0 844
duke@0 845 // ------------------------------------------------------------------
duke@0 846 // ciMethod::can_be_compiled
duke@0 847 //
duke@0 848 // Have previous compilations of this method succeeded?
duke@0 849 bool ciMethod::can_be_compiled() {
duke@0 850 check_is_loaded();
duke@0 851 return _is_compilable;
duke@0 852 }
duke@0 853
duke@0 854 // ------------------------------------------------------------------
duke@0 855 // ciMethod::set_not_compilable
duke@0 856 //
duke@0 857 // Tell the VM that this method cannot be compiled at all.
duke@0 858 void ciMethod::set_not_compilable() {
duke@0 859 check_is_loaded();
duke@0 860 VM_ENTRY_MARK;
duke@0 861 _is_compilable = false;
duke@0 862 get_methodOop()->set_not_compilable();
duke@0 863 }
duke@0 864
duke@0 865 // ------------------------------------------------------------------
duke@0 866 // ciMethod::can_be_osr_compiled
duke@0 867 //
duke@0 868 // Have previous compilations of this method succeeded?
duke@0 869 //
duke@0 870 // Implementation note: the VM does not currently keep track
duke@0 871 // of failed OSR compilations per bci. The entry_bci parameter
duke@0 872 // is currently unused.
duke@0 873 bool ciMethod::can_be_osr_compiled(int entry_bci) {
duke@0 874 check_is_loaded();
duke@0 875 VM_ENTRY_MARK;
duke@0 876 return !get_methodOop()->access_flags().is_not_osr_compilable();
duke@0 877 }
duke@0 878
duke@0 879 // ------------------------------------------------------------------
duke@0 880 // ciMethod::has_compiled_code
duke@0 881 bool ciMethod::has_compiled_code() {
duke@0 882 VM_ENTRY_MARK;
duke@0 883 return get_methodOop()->code() != NULL;
duke@0 884 }
duke@0 885
duke@0 886 // ------------------------------------------------------------------
duke@0 887 // ciMethod::instructions_size
duke@0 888 // This is a rough metric for "fat" methods, compared
duke@0 889 // before inlining with InlineSmallCode.
duke@0 890 // The CodeBlob::instructions_size accessor includes
duke@0 891 // junk like exception handler, stubs, and constant table,
duke@0 892 // which are not highly relevant to an inlined method.
duke@0 893 // So we use the more specific accessor nmethod::code_size.
duke@0 894 int ciMethod::instructions_size() {
duke@0 895 GUARDED_VM_ENTRY(
duke@0 896 nmethod* code = get_methodOop()->code();
duke@0 897 // if there's no compiled code or the code was produced by the
duke@0 898 // tier1 profiler return 0 for the code size. This should
duke@0 899 // probably be based on the compilation level of the nmethod but
duke@0 900 // that currently isn't properly recorded.
duke@0 901 if (code == NULL ||
duke@0 902 (TieredCompilation && code->compiler() != NULL && code->compiler()->is_c1())) {
duke@0 903 return 0;
duke@0 904 }
kvn@182 905 return code->code_end() - code->verified_entry_point();
duke@0 906 )
duke@0 907 }
duke@0 908
duke@0 909 // ------------------------------------------------------------------
duke@0 910 // ciMethod::log_nmethod_identity
duke@0 911 void ciMethod::log_nmethod_identity(xmlStream* log) {
duke@0 912 GUARDED_VM_ENTRY(
duke@0 913 nmethod* code = get_methodOop()->code();
duke@0 914 if (code != NULL) {
duke@0 915 code->log_identity(log);
duke@0 916 }
duke@0 917 )
duke@0 918 }
duke@0 919
duke@0 920 // ------------------------------------------------------------------
duke@0 921 // ciMethod::is_not_reached
duke@0 922 bool ciMethod::is_not_reached(int bci) {
duke@0 923 check_is_loaded();
duke@0 924 VM_ENTRY_MARK;
duke@0 925 return Interpreter::is_not_reached(
duke@0 926 methodHandle(THREAD, get_methodOop()), bci);
duke@0 927 }
duke@0 928
duke@0 929 // ------------------------------------------------------------------
duke@0 930 // ciMethod::was_never_executed
duke@0 931 bool ciMethod::was_executed_more_than(int times) {
duke@0 932 VM_ENTRY_MARK;
duke@0 933 return get_methodOop()->was_executed_more_than(times);
duke@0 934 }
duke@0 935
duke@0 936 // ------------------------------------------------------------------
duke@0 937 // ciMethod::has_unloaded_classes_in_signature
duke@0 938 bool ciMethod::has_unloaded_classes_in_signature() {
duke@0 939 VM_ENTRY_MARK;
duke@0 940 {
duke@0 941 EXCEPTION_MARK;
duke@0 942 methodHandle m(THREAD, get_methodOop());
duke@0 943 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD);
duke@0 944 if( HAS_PENDING_EXCEPTION ) {
duke@0 945 CLEAR_PENDING_EXCEPTION;
duke@0 946 return true; // Declare that we may have unloaded classes
duke@0 947 }
duke@0 948 return has_unloaded;
duke@0 949 }
duke@0 950 }
duke@0 951
duke@0 952 // ------------------------------------------------------------------
duke@0 953 // ciMethod::is_klass_loaded
duke@0 954 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const {
duke@0 955 VM_ENTRY_MARK;
duke@0 956 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved);
duke@0 957 }
duke@0 958
duke@0 959 // ------------------------------------------------------------------
duke@0 960 // ciMethod::check_call
duke@0 961 bool ciMethod::check_call(int refinfo_index, bool is_static) const {
duke@0 962 VM_ENTRY_MARK;
duke@0 963 {
duke@0 964 EXCEPTION_MARK;
duke@0 965 HandleMark hm(THREAD);
duke@0 966 constantPoolHandle pool (THREAD, get_methodOop()->constants());
duke@0 967 methodHandle spec_method;
duke@0 968 KlassHandle spec_klass;
duke@0 969 LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD);
duke@0 970 if (HAS_PENDING_EXCEPTION) {
duke@0 971 CLEAR_PENDING_EXCEPTION;
duke@0 972 return false;
duke@0 973 } else {
duke@0 974 return (spec_method->is_static() == is_static);
duke@0 975 }
duke@0 976 }
duke@0 977 return false;
duke@0 978 }
duke@0 979
duke@0 980 // ------------------------------------------------------------------
duke@0 981 // ciMethod::print_codes
duke@0 982 //
duke@0 983 // Print the bytecodes for this method.
duke@0 984 void ciMethod::print_codes_on(outputStream* st) {
duke@0 985 check_is_loaded();
duke@0 986 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);)
duke@0 987 }
duke@0 988
duke@0 989
duke@0 990 #define FETCH_FLAG_FROM_VM(flag_accessor) { \
duke@0 991 check_is_loaded(); \
duke@0 992 VM_ENTRY_MARK; \
duke@0 993 return get_methodOop()->flag_accessor(); \
duke@0 994 }
duke@0 995
duke@0 996 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); }
duke@0 997 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); }
duke@0 998 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); }
duke@0 999 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); }
duke@0 1000 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); }
duke@0 1001 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); }
duke@0 1002
duke@0 1003 BCEscapeAnalyzer *ciMethod::get_bcea() {
duke@0 1004 if (_bcea == NULL) {
duke@0 1005 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL);
duke@0 1006 }
duke@0 1007 return _bcea;
duke@0 1008 }
duke@0 1009
duke@0 1010 ciMethodBlocks *ciMethod::get_method_blocks() {
duke@0 1011 Arena *arena = CURRENT_ENV->arena();
duke@0 1012 if (_method_blocks == NULL) {
duke@0 1013 _method_blocks = new (arena) ciMethodBlocks(arena, this);
duke@0 1014 }
duke@0 1015 return _method_blocks;
duke@0 1016 }
duke@0 1017
duke@0 1018 #undef FETCH_FLAG_FROM_VM
duke@0 1019
duke@0 1020
duke@0 1021 // ------------------------------------------------------------------
duke@0 1022 // ciMethod::print_codes
duke@0 1023 //
duke@0 1024 // Print a range of the bytecodes for this method.
duke@0 1025 void ciMethod::print_codes_on(int from, int to, outputStream* st) {
duke@0 1026 check_is_loaded();
duke@0 1027 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);)
duke@0 1028 }
duke@0 1029
duke@0 1030 // ------------------------------------------------------------------
duke@0 1031 // ciMethod::print_name
duke@0 1032 //
duke@0 1033 // Print the name of this method, including signature and some flags.
duke@0 1034 void ciMethod::print_name(outputStream* st) {
duke@0 1035 check_is_loaded();
duke@0 1036 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);)
duke@0 1037 }
duke@0 1038
duke@0 1039 // ------------------------------------------------------------------
duke@0 1040 // ciMethod::print_short_name
duke@0 1041 //
duke@0 1042 // Print the name of this method, without signature.
duke@0 1043 void ciMethod::print_short_name(outputStream* st) {
duke@0 1044 check_is_loaded();
duke@0 1045 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);)
duke@0 1046 }
duke@0 1047
duke@0 1048 // ------------------------------------------------------------------
duke@0 1049 // ciMethod::print_impl
duke@0 1050 //
duke@0 1051 // Implementation of the print method.
duke@0 1052 void ciMethod::print_impl(outputStream* st) {
duke@0 1053 ciObject::print_impl(st);
duke@0 1054 st->print(" name=");
duke@0 1055 name()->print_symbol_on(st);
duke@0 1056 st->print(" holder=");
duke@0 1057 holder()->print_name_on(st);
duke@0 1058 st->print(" signature=");
duke@0 1059 signature()->as_symbol()->print_symbol_on(st);
duke@0 1060 if (is_loaded()) {
duke@0 1061 st->print(" loaded=true flags=");
duke@0 1062 flags().print_member_flags(st);
duke@0 1063 } else {
duke@0 1064 st->print(" loaded=false");
duke@0 1065 }
duke@0 1066 }