annotate src/share/vm/ci/ciMethod.cpp @ 1616: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
duke@0 1 /*
trims@1472 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. 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 *
trims@1472 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1472 20 * or visit www.oracle.com if you need additional information or have any
trims@1472 21 * 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 _method_blocks = NULL;
twisti@1616 58 #if defined(COMPILER2) || defined(SHARK)
duke@0 59 _flow = NULL;
kvn@1570 60 _bcea = NULL;
twisti@1616 61 #endif // COMPILER2 || SHARK
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 _method_blocks = NULL;
duke@0 125 _method_data = NULL;
twisti@1616 126 #if defined(COMPILER2) || defined(SHARK)
duke@0 127 _flow = NULL;
kvn@1570 128 _bcea = NULL;
twisti@1616 129 #endif // COMPILER2 || SHARK
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
twisti@1616 232 #ifdef SHARK
twisti@1616 233 // ------------------------------------------------------------------
twisti@1616 234 // ciMethod::itable_index
twisti@1616 235 //
twisti@1616 236 // Get the position of this method's entry in the itable, if any.
twisti@1616 237 int ciMethod::itable_index() {
twisti@1616 238 check_is_loaded();
twisti@1616 239 assert(holder()->is_linked(), "must be linked");
twisti@1616 240 VM_ENTRY_MARK;
twisti@1616 241 return klassItable::compute_itable_index(get_methodOop());
twisti@1616 242 }
twisti@1616 243 #endif // SHARK
twisti@1616 244
twisti@1616 245
duke@0 246 // ------------------------------------------------------------------
duke@0 247 // ciMethod::native_entry
duke@0 248 //
duke@0 249 // Get the address of this method's native code, if any.
duke@0 250 address ciMethod::native_entry() {
duke@0 251 check_is_loaded();
duke@0 252 assert(flags().is_native(), "must be native method");
duke@0 253 VM_ENTRY_MARK;
duke@0 254 methodOop method = get_methodOop();
duke@0 255 address entry = method->native_function();
duke@0 256 assert(entry != NULL, "must be valid entry point");
duke@0 257 return entry;
duke@0 258 }
duke@0 259
duke@0 260
duke@0 261 // ------------------------------------------------------------------
duke@0 262 // ciMethod::interpreter_entry
duke@0 263 //
duke@0 264 // Get the entry point for running this method in the interpreter.
duke@0 265 address ciMethod::interpreter_entry() {
duke@0 266 check_is_loaded();
duke@0 267 VM_ENTRY_MARK;
duke@0 268 methodHandle mh(THREAD, get_methodOop());
duke@0 269 return Interpreter::entry_for_method(mh);
duke@0 270 }
duke@0 271
duke@0 272
duke@0 273 // ------------------------------------------------------------------
duke@0 274 // ciMethod::uses_balanced_monitors
duke@0 275 //
duke@0 276 // Does this method use monitors in a strict stack-disciplined manner?
duke@0 277 bool ciMethod::has_balanced_monitors() {
duke@0 278 check_is_loaded();
duke@0 279 if (_balanced_monitors) return true;
duke@0 280
duke@0 281 // Analyze the method to see if monitors are used properly.
duke@0 282 VM_ENTRY_MARK;
duke@0 283 methodHandle method(THREAD, get_methodOop());
duke@0 284 assert(method->has_monitor_bytecodes(), "should have checked this");
duke@0 285
duke@0 286 // Check to see if a previous compilation computed the
duke@0 287 // monitor-matching analysis.
duke@0 288 if (method->guaranteed_monitor_matching()) {
duke@0 289 _balanced_monitors = true;
duke@0 290 return true;
duke@0 291 }
duke@0 292
duke@0 293 {
duke@0 294 EXCEPTION_MARK;
duke@0 295 ResourceMark rm(THREAD);
duke@0 296 GeneratePairingInfo gpi(method);
duke@0 297 gpi.compute_map(CATCH);
duke@0 298 if (!gpi.monitor_safe()) {
duke@0 299 return false;
duke@0 300 }
duke@0 301 method->set_guaranteed_monitor_matching();
duke@0 302 _balanced_monitors = true;
duke@0 303 }
duke@0 304 return true;
duke@0 305 }
duke@0 306
duke@0 307
duke@0 308 // ------------------------------------------------------------------
duke@0 309 // ciMethod::get_flow_analysis
duke@0 310 ciTypeFlow* ciMethod::get_flow_analysis() {
twisti@1616 311 #if defined(COMPILER2) || defined(SHARK)
duke@0 312 if (_flow == NULL) {
duke@0 313 ciEnv* env = CURRENT_ENV;
duke@0 314 _flow = new (env->arena()) ciTypeFlow(env, this);
duke@0 315 _flow->do_flow();
duke@0 316 }
duke@0 317 return _flow;
twisti@1616 318 #else // COMPILER2 || SHARK
duke@0 319 ShouldNotReachHere();
duke@0 320 return NULL;
twisti@1616 321 #endif // COMPILER2 || SHARK
duke@0 322 }
duke@0 323
duke@0 324
duke@0 325 // ------------------------------------------------------------------
duke@0 326 // ciMethod::get_osr_flow_analysis
duke@0 327 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) {
twisti@1616 328 #if defined(COMPILER2) || defined(SHARK)
duke@0 329 // OSR entry points are always place after a call bytecode of some sort
duke@0 330 assert(osr_bci >= 0, "must supply valid OSR entry point");
duke@0 331 ciEnv* env = CURRENT_ENV;
duke@0 332 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci);
duke@0 333 flow->do_flow();
duke@0 334 return flow;
twisti@1616 335 #else // COMPILER2 || SHARK
duke@0 336 ShouldNotReachHere();
duke@0 337 return NULL;
twisti@1616 338 #endif // COMPILER2 || SHARK
duke@0 339 }
duke@0 340
duke@0 341 // ------------------------------------------------------------------
never@991 342 // ciMethod::raw_liveness_at_bci
duke@0 343 //
duke@0 344 // Which local variables are live at a specific bci?
never@991 345 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) {
duke@0 346 check_is_loaded();
duke@0 347 if (_liveness == NULL) {
duke@0 348 // Create the liveness analyzer.
duke@0 349 Arena* arena = CURRENT_ENV->arena();
duke@0 350 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 351 _liveness->compute_liveness();
duke@0 352 }
never@991 353 return _liveness->get_liveness_at(bci);
never@991 354 }
never@991 355
never@991 356 // ------------------------------------------------------------------
never@991 357 // ciMethod::liveness_at_bci
never@991 358 //
never@991 359 // Which local variables are live at a specific bci? When debugging
never@991 360 // will return true for all locals in some cases to improve debug
never@991 361 // information.
never@991 362 MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
never@991 363 MethodLivenessResult result = raw_liveness_at_bci(bci);
kvn@780 364 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) {
duke@0 365 // Keep all locals live for the user's edification and amusement.
duke@0 366 result.at_put_range(0, result.size(), true);
duke@0 367 }
duke@0 368 return result;
duke@0 369 }
duke@0 370
duke@0 371 // ciMethod::live_local_oops_at_bci
duke@0 372 //
duke@0 373 // find all the live oops in the locals array for a particular bci
duke@0 374 // Compute what the interpreter believes by using the interpreter
duke@0 375 // oopmap generator. This is used as a double check during osr to
duke@0 376 // guard against conservative result from MethodLiveness making us
duke@0 377 // think a dead oop is live. MethodLiveness is conservative in the
duke@0 378 // sense that it may consider locals to be live which cannot be live,
duke@0 379 // like in the case where a local could contain an oop or a primitive
duke@0 380 // along different paths. In that case the local must be dead when
duke@0 381 // those paths merge. Since the interpreter's viewpoint is used when
duke@0 382 // gc'ing an interpreter frame we need to use its viewpoint during
duke@0 383 // OSR when loading the locals.
duke@0 384
duke@0 385 BitMap ciMethod::live_local_oops_at_bci(int bci) {
duke@0 386 VM_ENTRY_MARK;
duke@0 387 InterpreterOopMap mask;
duke@0 388 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask);
duke@0 389 int mask_size = max_locals();
duke@0 390 BitMap result(mask_size);
duke@0 391 result.clear();
duke@0 392 int i;
duke@0 393 for (i = 0; i < mask_size ; i++ ) {
duke@0 394 if (mask.is_oop(i)) result.set_bit(i);
duke@0 395 }
duke@0 396 return result;
duke@0 397 }
duke@0 398
duke@0 399
duke@0 400 #ifdef COMPILER1
duke@0 401 // ------------------------------------------------------------------
duke@0 402 // ciMethod::bci_block_start
duke@0 403 //
duke@0 404 // Marks all bcis where a new basic block starts
duke@0 405 const BitMap ciMethod::bci_block_start() {
duke@0 406 check_is_loaded();
duke@0 407 if (_liveness == NULL) {
duke@0 408 // Create the liveness analyzer.
duke@0 409 Arena* arena = CURRENT_ENV->arena();
duke@0 410 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 411 _liveness->compute_liveness();
duke@0 412 }
duke@0 413
duke@0 414 return _liveness->get_bci_block_start();
duke@0 415 }
duke@0 416 #endif // COMPILER1
duke@0 417
duke@0 418
duke@0 419 // ------------------------------------------------------------------
duke@0 420 // ciMethod::call_profile_at_bci
duke@0 421 //
duke@0 422 // Get the ciCallProfile for the invocation of this method.
duke@0 423 // Also reports receiver types for non-call type checks (if TypeProfileCasts).
duke@0 424 ciCallProfile ciMethod::call_profile_at_bci(int bci) {
duke@0 425 ResourceMark rm;
duke@0 426 ciCallProfile result;
duke@0 427 if (method_data() != NULL && method_data()->is_mature()) {
duke@0 428 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 429 if (data != NULL && data->is_CounterData()) {
duke@0 430 // Every profiled call site has a counter.
duke@0 431 int count = data->as_CounterData()->count();
duke@0 432
duke@0 433 if (!data->is_ReceiverTypeData()) {
duke@0 434 result._receiver_count[0] = 0; // that's a definite zero
duke@0 435 } else { // ReceiverTypeData is a subclass of CounterData
duke@0 436 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
duke@0 437 // In addition, virtual call sites have receiver type information
duke@0 438 int receivers_count_total = 0;
duke@0 439 int morphism = 0;
duke@0 440 for (uint i = 0; i < call->row_limit(); i++) {
duke@0 441 ciKlass* receiver = call->receiver(i);
duke@0 442 if (receiver == NULL) continue;
duke@0 443 morphism += 1;
duke@0 444 int rcount = call->receiver_count(i);
duke@0 445 if (rcount == 0) rcount = 1; // Should be valid value
duke@0 446 receivers_count_total += rcount;
duke@0 447 // Add the receiver to result data.
duke@0 448 result.add_receiver(receiver, rcount);
duke@0 449 // If we extend profiling to record methods,
duke@0 450 // we will set result._method also.
duke@0 451 }
duke@0 452 // Determine call site's morphism.
kvn@1206 453 // The call site count is 0 with known morphism (onlt 1 or 2 receivers)
kvn@1206 454 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof.
kvn@1206 455 // The call site count is > 0 in the case of a polymorphic virtual call.
kvn@1206 456 if (morphism > 0 && morphism == result._limit) {
kvn@1206 457 // The morphism <= MorphismLimit.
kvn@1206 458 if ((morphism < ciCallProfile::MorphismLimit) ||
kvn@1206 459 (morphism == ciCallProfile::MorphismLimit && count == 0)) {
kvn@1206 460 #ifdef ASSERT
kvn@1206 461 if (count > 0) {
kvn@1251 462 this->print_short_name(tty);
kvn@1251 463 tty->print_cr(" @ bci:%d", bci);
kvn@1206 464 this->print_codes();
kvn@1206 465 assert(false, "this call site should not be polymorphic");
kvn@1206 466 }
kvn@1206 467 #endif
duke@0 468 result._morphism = morphism;
duke@0 469 }
duke@0 470 }
duke@0 471 // Make the count consistent if this is a call profile. If count is
duke@0 472 // zero or less, presume that this is a typecheck profile and
duke@0 473 // do nothing. Otherwise, increase count to be the sum of all
duke@0 474 // receiver's counts.
kvn@1206 475 if (count >= 0) {
kvn@1206 476 count += receivers_count_total;
duke@0 477 }
duke@0 478 }
duke@0 479 result._count = count;
duke@0 480 }
duke@0 481 }
duke@0 482 return result;
duke@0 483 }
duke@0 484
duke@0 485 // ------------------------------------------------------------------
duke@0 486 // Add new receiver and sort data by receiver's profile count.
duke@0 487 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) {
duke@0 488 // Add new receiver and sort data by receiver's counts when we have space
duke@0 489 // for it otherwise replace the less called receiver (less called receiver
duke@0 490 // is placed to the last array element which is not used).
duke@0 491 // First array's element contains most called receiver.
duke@0 492 int i = _limit;
duke@0 493 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) {
duke@0 494 _receiver[i] = _receiver[i-1];
duke@0 495 _receiver_count[i] = _receiver_count[i-1];
duke@0 496 }
duke@0 497 _receiver[i] = receiver;
duke@0 498 _receiver_count[i] = receiver_count;
duke@0 499 if (_limit < MorphismLimit) _limit++;
duke@0 500 }
duke@0 501
duke@0 502 // ------------------------------------------------------------------
duke@0 503 // ciMethod::find_monomorphic_target
duke@0 504 //
duke@0 505 // Given a certain calling environment, find the monomorphic target
duke@0 506 // for the call. Return NULL if the call is not monomorphic in
duke@0 507 // its calling environment, or if there are only abstract methods.
duke@0 508 // The returned method is never abstract.
duke@0 509 // Note: If caller uses a non-null result, it must inform dependencies
duke@0 510 // via assert_unique_concrete_method or assert_leaf_type.
duke@0 511 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,
duke@0 512 ciInstanceKlass* callee_holder,
duke@0 513 ciInstanceKlass* actual_recv) {
duke@0 514 check_is_loaded();
duke@0 515
duke@0 516 if (actual_recv->is_interface()) {
duke@0 517 // %%% We cannot trust interface types, yet. See bug 6312651.
duke@0 518 return NULL;
duke@0 519 }
duke@0 520
duke@0 521 ciMethod* root_m = resolve_invoke(caller, actual_recv);
duke@0 522 if (root_m == NULL) {
duke@0 523 // Something went wrong looking up the actual receiver method.
duke@0 524 return NULL;
duke@0 525 }
duke@0 526 assert(!root_m->is_abstract(), "resolve_invoke promise");
duke@0 527
duke@0 528 // Make certain quick checks even if UseCHA is false.
duke@0 529
duke@0 530 // Is it private or final?
duke@0 531 if (root_m->can_be_statically_bound()) {
duke@0 532 return root_m;
duke@0 533 }
duke@0 534
duke@0 535 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) {
duke@0 536 // Easy case. There is no other place to put a method, so don't bother
duke@0 537 // to go through the VM_ENTRY_MARK and all the rest.
duke@0 538 return root_m;
duke@0 539 }
duke@0 540
duke@0 541 // Array methods (clone, hashCode, etc.) are always statically bound.
duke@0 542 // If we were to see an array type here, we'd return root_m.
duke@0 543 // However, this method processes only ciInstanceKlasses. (See 4962591.)
duke@0 544 // The inline_native_clone intrinsic narrows Object to T[] properly,
duke@0 545 // so there is no need to do the same job here.
duke@0 546
duke@0 547 if (!UseCHA) return NULL;
duke@0 548
duke@0 549 VM_ENTRY_MARK;
duke@0 550
duke@0 551 methodHandle target;
duke@0 552 {
duke@0 553 MutexLocker locker(Compile_lock);
duke@0 554 klassOop context = actual_recv->get_klassOop();
duke@0 555 target = Dependencies::find_unique_concrete_method(context,
duke@0 556 root_m->get_methodOop());
duke@0 557 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.
duke@0 558 }
duke@0 559
duke@0 560 #ifndef PRODUCT
duke@0 561 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) {
duke@0 562 tty->print("found a non-root unique target method");
duke@0 563 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name());
duke@0 564 tty->print(" method = ");
duke@0 565 target->print_short_name(tty);
duke@0 566 tty->cr();
duke@0 567 }
duke@0 568 #endif //PRODUCT
duke@0 569
duke@0 570 if (target() == NULL) {
duke@0 571 return NULL;
duke@0 572 }
duke@0 573 if (target() == root_m->get_methodOop()) {
duke@0 574 return root_m;
duke@0 575 }
duke@0 576 if (!root_m->is_public() &&
duke@0 577 !root_m->is_protected()) {
duke@0 578 // If we are going to reason about inheritance, it's easiest
duke@0 579 // if the method in question is public, protected, or private.
duke@0 580 // If the answer is not root_m, it is conservatively correct
duke@0 581 // to return NULL, even if the CHA encountered irrelevant
duke@0 582 // methods in other packages.
duke@0 583 // %%% TO DO: Work out logic for package-private methods
duke@0 584 // with the same name but different vtable indexes.
duke@0 585 return NULL;
duke@0 586 }
duke@0 587 return CURRENT_THREAD_ENV->get_object(target())->as_method();
duke@0 588 }
duke@0 589
duke@0 590 // ------------------------------------------------------------------
duke@0 591 // ciMethod::resolve_invoke
duke@0 592 //
duke@0 593 // Given a known receiver klass, find the target for the call.
duke@0 594 // Return NULL if the call has no target or the target is abstract.
duke@0 595 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) {
duke@0 596 check_is_loaded();
duke@0 597 VM_ENTRY_MARK;
duke@0 598
duke@0 599 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 600 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop());
duke@0 601 KlassHandle h_resolved (THREAD, holder()->get_klassOop());
duke@0 602 symbolHandle h_name (THREAD, name()->get_symbolOop());
duke@0 603 symbolHandle h_signature (THREAD, signature()->get_symbolOop());
duke@0 604
duke@0 605 methodHandle m;
duke@0 606 // Only do exact lookup if receiver klass has been linked. Otherwise,
duke@0 607 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 608 if (h_recv->oop_is_javaArray()
duke@0 609 ||
duke@0 610 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) {
duke@0 611 if (holder()->is_interface()) {
duke@0 612 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 613 } else {
duke@0 614 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 615 }
duke@0 616 }
duke@0 617
duke@0 618 if (m.is_null()) {
duke@0 619 // Return NULL only if there was a problem with lookup (uninitialized class, etc.)
duke@0 620 return NULL;
duke@0 621 }
duke@0 622
duke@0 623 ciMethod* result = this;
duke@0 624 if (m() != get_methodOop()) {
duke@0 625 result = CURRENT_THREAD_ENV->get_object(m())->as_method();
duke@0 626 }
duke@0 627
duke@0 628 // Don't return abstract methods because they aren't
duke@0 629 // optimizable or interesting.
duke@0 630 if (result->is_abstract()) {
duke@0 631 return NULL;
duke@0 632 } else {
duke@0 633 return result;
duke@0 634 }
duke@0 635 }
duke@0 636
duke@0 637 // ------------------------------------------------------------------
duke@0 638 // ciMethod::resolve_vtable_index
duke@0 639 //
duke@0 640 // Given a known receiver klass, find the vtable index for the call.
duke@0 641 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown.
duke@0 642 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) {
duke@0 643 check_is_loaded();
duke@0 644
duke@0 645 int vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 646 // Only do lookup if receiver klass has been linked. Otherwise,
duke@0 647 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 648 if (!receiver->is_interface()
duke@0 649 && (!receiver->is_instance_klass() ||
duke@0 650 receiver->as_instance_klass()->is_linked())) {
duke@0 651 VM_ENTRY_MARK;
duke@0 652
duke@0 653 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 654 KlassHandle h_recv (THREAD, receiver->get_klassOop());
duke@0 655 symbolHandle h_name (THREAD, name()->get_symbolOop());
duke@0 656 symbolHandle h_signature (THREAD, signature()->get_symbolOop());
duke@0 657
duke@0 658 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass);
duke@0 659 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
duke@0 660 // A statically bound method. Return "no such index".
duke@0 661 vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 662 }
duke@0 663 }
duke@0 664
duke@0 665 return vtable_index;
duke@0 666 }
duke@0 667
duke@0 668 // ------------------------------------------------------------------
duke@0 669 // ciMethod::interpreter_call_site_count
duke@0 670 int ciMethod::interpreter_call_site_count(int bci) {
duke@0 671 if (method_data() != NULL) {
duke@0 672 ResourceMark rm;
duke@0 673 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 674 if (data != NULL && data->is_CounterData()) {
duke@0 675 return scale_count(data->as_CounterData()->count());
duke@0 676 }
duke@0 677 }
duke@0 678 return -1; // unknown
duke@0 679 }
duke@0 680
duke@0 681 // ------------------------------------------------------------------
duke@0 682 // Adjust a CounterData count to be commensurate with
duke@0 683 // interpreter_invocation_count. If the MDO exists for
duke@0 684 // only 25% of the time the method exists, then the
duke@0 685 // counts in the MDO should be scaled by 4X, so that
duke@0 686 // they can be usefully and stably compared against the
duke@0 687 // invocation counts in methods.
duke@0 688 int ciMethod::scale_count(int count, float prof_factor) {
duke@0 689 if (count > 0 && method_data() != NULL) {
duke@0 690 int current_mileage = method_data()->current_mileage();
duke@0 691 int creation_mileage = method_data()->creation_mileage();
duke@0 692 int counter_life = current_mileage - creation_mileage;
duke@0 693 int method_life = interpreter_invocation_count();
duke@0 694 // counter_life due to backedge_counter could be > method_life
duke@0 695 if (counter_life > method_life)
duke@0 696 counter_life = method_life;
duke@0 697 if (0 < counter_life && counter_life <= method_life) {
duke@0 698 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5);
duke@0 699 count = (count > 0) ? count : 1;
duke@0 700 }
duke@0 701 }
duke@0 702 return count;
duke@0 703 }
duke@0 704
duke@0 705 // ------------------------------------------------------------------
jrose@710 706 // invokedynamic support
twisti@1485 707
twisti@1485 708 // ------------------------------------------------------------------
twisti@1485 709 // ciMethod::is_method_handle_invoke
jrose@710 710 //
jrose@1585 711 // Return true if the method is an instance of one of the two
jrose@1585 712 // signature-polymorphic MethodHandle methods, invokeExact or invokeGeneric.
twisti@1137 713 bool ciMethod::is_method_handle_invoke() const {
jrose@1585 714 if (!is_loaded()) return false;
jrose@1585 715 VM_ENTRY_MARK;
jrose@1585 716 return get_methodOop()->is_method_handle_invoke();
jrose@710 717 }
jrose@710 718
twisti@1485 719 // ------------------------------------------------------------------
twisti@1485 720 // ciMethod::is_method_handle_adapter
twisti@1485 721 //
twisti@1485 722 // Return true if the method is a generated MethodHandle adapter.
jrose@1585 723 // These are built by MethodHandleCompiler.
twisti@1152 724 bool ciMethod::is_method_handle_adapter() const {
jrose@1585 725 if (!is_loaded()) return false;
twisti@1152 726 VM_ENTRY_MARK;
twisti@1152 727 return get_methodOop()->is_method_handle_adapter();
twisti@1152 728 }
twisti@1152 729
jrose@710 730 ciInstance* ciMethod::method_handle_type() {
jrose@710 731 check_is_loaded();
jrose@710 732 VM_ENTRY_MARK;
jrose@710 733 oop mtype = get_methodOop()->method_handle_type();
jrose@710 734 return CURRENT_THREAD_ENV->get_object(mtype)->as_instance();
jrose@710 735 }
jrose@710 736
jrose@710 737
jrose@710 738 // ------------------------------------------------------------------
duke@0 739 // ciMethod::build_method_data
duke@0 740 //
duke@0 741 // Generate new methodDataOop objects at compile time.
duke@0 742 void ciMethod::build_method_data(methodHandle h_m) {
duke@0 743 EXCEPTION_CONTEXT;
duke@0 744 if (is_native() || is_abstract() || h_m()->is_accessor()) return;
duke@0 745 if (h_m()->method_data() == NULL) {
duke@0 746 methodOopDesc::build_interpreter_method_data(h_m, THREAD);
duke@0 747 if (HAS_PENDING_EXCEPTION) {
duke@0 748 CLEAR_PENDING_EXCEPTION;
duke@0 749 }
duke@0 750 }
duke@0 751 if (h_m()->method_data() != NULL) {
duke@0 752 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 753 _method_data->load_data();
duke@0 754 } else {
duke@0 755 _method_data = CURRENT_ENV->get_empty_methodData();
duke@0 756 }
duke@0 757 }
duke@0 758
duke@0 759 // public, retroactive version
duke@0 760 void ciMethod::build_method_data() {
duke@0 761 if (_method_data == NULL || _method_data->is_empty()) {
duke@0 762 GUARDED_VM_ENTRY({
duke@0 763 build_method_data(get_methodOop());
duke@0 764 });
duke@0 765 }
duke@0 766 }
duke@0 767
duke@0 768
duke@0 769 // ------------------------------------------------------------------
duke@0 770 // ciMethod::method_data
duke@0 771 //
duke@0 772 ciMethodData* ciMethod::method_data() {
duke@0 773 if (_method_data != NULL) {
duke@0 774 return _method_data;
duke@0 775 }
duke@0 776 VM_ENTRY_MARK;
duke@0 777 ciEnv* env = CURRENT_ENV;
duke@0 778 Thread* my_thread = JavaThread::current();
duke@0 779 methodHandle h_m(my_thread, get_methodOop());
duke@0 780
duke@0 781 if (Tier1UpdateMethodData && is_tier1_compile(env->comp_level())) {
duke@0 782 build_method_data(h_m);
duke@0 783 }
duke@0 784
duke@0 785 if (h_m()->method_data() != NULL) {
duke@0 786 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 787 _method_data->load_data();
duke@0 788 } else {
duke@0 789 _method_data = CURRENT_ENV->get_empty_methodData();
duke@0 790 }
duke@0 791 return _method_data;
duke@0 792
duke@0 793 }
duke@0 794
duke@0 795
duke@0 796 // ------------------------------------------------------------------
duke@0 797 // ciMethod::will_link
duke@0 798 //
duke@0 799 // Will this method link in a specific calling context?
duke@0 800 bool ciMethod::will_link(ciKlass* accessing_klass,
duke@0 801 ciKlass* declared_method_holder,
duke@0 802 Bytecodes::Code bc) {
duke@0 803 if (!is_loaded()) {
duke@0 804 // Method lookup failed.
duke@0 805 return false;
duke@0 806 }
duke@0 807
duke@0 808 // The link checks have been front-loaded into the get_method
duke@0 809 // call. This method (ciMethod::will_link()) will be removed
duke@0 810 // in the future.
duke@0 811
duke@0 812 return true;
duke@0 813 }
duke@0 814
duke@0 815 // ------------------------------------------------------------------
duke@0 816 // ciMethod::should_exclude
duke@0 817 //
duke@0 818 // Should this method be excluded from compilation?
duke@0 819 bool ciMethod::should_exclude() {
duke@0 820 check_is_loaded();
duke@0 821 VM_ENTRY_MARK;
duke@0 822 methodHandle mh(THREAD, get_methodOop());
duke@0 823 bool ignore;
duke@0 824 return CompilerOracle::should_exclude(mh, ignore);
duke@0 825 }
duke@0 826
duke@0 827 // ------------------------------------------------------------------
duke@0 828 // ciMethod::should_inline
duke@0 829 //
duke@0 830 // Should this method be inlined during compilation?
duke@0 831 bool ciMethod::should_inline() {
duke@0 832 check_is_loaded();
duke@0 833 VM_ENTRY_MARK;
duke@0 834 methodHandle mh(THREAD, get_methodOop());
duke@0 835 return CompilerOracle::should_inline(mh);
duke@0 836 }
duke@0 837
duke@0 838 // ------------------------------------------------------------------
duke@0 839 // ciMethod::should_not_inline
duke@0 840 //
duke@0 841 // Should this method be disallowed from inlining during compilation?
duke@0 842 bool ciMethod::should_not_inline() {
duke@0 843 check_is_loaded();
duke@0 844 VM_ENTRY_MARK;
duke@0 845 methodHandle mh(THREAD, get_methodOop());
duke@0 846 return CompilerOracle::should_not_inline(mh);
duke@0 847 }
duke@0 848
duke@0 849 // ------------------------------------------------------------------
duke@0 850 // ciMethod::should_print_assembly
duke@0 851 //
duke@0 852 // Should the compiler print the generated code for this method?
duke@0 853 bool ciMethod::should_print_assembly() {
duke@0 854 check_is_loaded();
duke@0 855 VM_ENTRY_MARK;
duke@0 856 methodHandle mh(THREAD, get_methodOop());
duke@0 857 return CompilerOracle::should_print(mh);
duke@0 858 }
duke@0 859
duke@0 860 // ------------------------------------------------------------------
duke@0 861 // ciMethod::break_at_execute
duke@0 862 //
duke@0 863 // Should the compiler insert a breakpoint into the generated code
duke@0 864 // method?
duke@0 865 bool ciMethod::break_at_execute() {
duke@0 866 check_is_loaded();
duke@0 867 VM_ENTRY_MARK;
duke@0 868 methodHandle mh(THREAD, get_methodOop());
duke@0 869 return CompilerOracle::should_break_at(mh);
duke@0 870 }
duke@0 871
duke@0 872 // ------------------------------------------------------------------
duke@0 873 // ciMethod::has_option
duke@0 874 //
duke@0 875 bool ciMethod::has_option(const char* option) {
duke@0 876 check_is_loaded();
duke@0 877 VM_ENTRY_MARK;
duke@0 878 methodHandle mh(THREAD, get_methodOop());
duke@0 879 return CompilerOracle::has_option_string(mh, option);
duke@0 880 }
duke@0 881
duke@0 882 // ------------------------------------------------------------------
duke@0 883 // ciMethod::can_be_compiled
duke@0 884 //
duke@0 885 // Have previous compilations of this method succeeded?
duke@0 886 bool ciMethod::can_be_compiled() {
duke@0 887 check_is_loaded();
duke@0 888 return _is_compilable;
duke@0 889 }
duke@0 890
duke@0 891 // ------------------------------------------------------------------
duke@0 892 // ciMethod::set_not_compilable
duke@0 893 //
duke@0 894 // Tell the VM that this method cannot be compiled at all.
duke@0 895 void ciMethod::set_not_compilable() {
duke@0 896 check_is_loaded();
duke@0 897 VM_ENTRY_MARK;
duke@0 898 _is_compilable = false;
duke@0 899 get_methodOop()->set_not_compilable();
duke@0 900 }
duke@0 901
duke@0 902 // ------------------------------------------------------------------
duke@0 903 // ciMethod::can_be_osr_compiled
duke@0 904 //
duke@0 905 // Have previous compilations of this method succeeded?
duke@0 906 //
duke@0 907 // Implementation note: the VM does not currently keep track
duke@0 908 // of failed OSR compilations per bci. The entry_bci parameter
duke@0 909 // is currently unused.
duke@0 910 bool ciMethod::can_be_osr_compiled(int entry_bci) {
duke@0 911 check_is_loaded();
duke@0 912 VM_ENTRY_MARK;
duke@0 913 return !get_methodOop()->access_flags().is_not_osr_compilable();
duke@0 914 }
duke@0 915
duke@0 916 // ------------------------------------------------------------------
duke@0 917 // ciMethod::has_compiled_code
duke@0 918 bool ciMethod::has_compiled_code() {
duke@0 919 VM_ENTRY_MARK;
duke@0 920 return get_methodOop()->code() != NULL;
duke@0 921 }
duke@0 922
duke@0 923 // ------------------------------------------------------------------
duke@0 924 // ciMethod::instructions_size
duke@0 925 // This is a rough metric for "fat" methods, compared
duke@0 926 // before inlining with InlineSmallCode.
duke@0 927 // The CodeBlob::instructions_size accessor includes
duke@0 928 // junk like exception handler, stubs, and constant table,
duke@0 929 // which are not highly relevant to an inlined method.
duke@0 930 // So we use the more specific accessor nmethod::code_size.
duke@0 931 int ciMethod::instructions_size() {
duke@0 932 GUARDED_VM_ENTRY(
duke@0 933 nmethod* code = get_methodOop()->code();
duke@0 934 // if there's no compiled code or the code was produced by the
duke@0 935 // tier1 profiler return 0 for the code size. This should
duke@0 936 // probably be based on the compilation level of the nmethod but
duke@0 937 // that currently isn't properly recorded.
duke@0 938 if (code == NULL ||
duke@0 939 (TieredCompilation && code->compiler() != NULL && code->compiler()->is_c1())) {
duke@0 940 return 0;
duke@0 941 }
kvn@182 942 return code->code_end() - code->verified_entry_point();
duke@0 943 )
duke@0 944 }
duke@0 945
duke@0 946 // ------------------------------------------------------------------
duke@0 947 // ciMethod::log_nmethod_identity
duke@0 948 void ciMethod::log_nmethod_identity(xmlStream* log) {
duke@0 949 GUARDED_VM_ENTRY(
duke@0 950 nmethod* code = get_methodOop()->code();
duke@0 951 if (code != NULL) {
duke@0 952 code->log_identity(log);
duke@0 953 }
duke@0 954 )
duke@0 955 }
duke@0 956
duke@0 957 // ------------------------------------------------------------------
duke@0 958 // ciMethod::is_not_reached
duke@0 959 bool ciMethod::is_not_reached(int bci) {
duke@0 960 check_is_loaded();
duke@0 961 VM_ENTRY_MARK;
duke@0 962 return Interpreter::is_not_reached(
duke@0 963 methodHandle(THREAD, get_methodOop()), bci);
duke@0 964 }
duke@0 965
duke@0 966 // ------------------------------------------------------------------
duke@0 967 // ciMethod::was_never_executed
duke@0 968 bool ciMethod::was_executed_more_than(int times) {
duke@0 969 VM_ENTRY_MARK;
duke@0 970 return get_methodOop()->was_executed_more_than(times);
duke@0 971 }
duke@0 972
duke@0 973 // ------------------------------------------------------------------
duke@0 974 // ciMethod::has_unloaded_classes_in_signature
duke@0 975 bool ciMethod::has_unloaded_classes_in_signature() {
duke@0 976 VM_ENTRY_MARK;
duke@0 977 {
duke@0 978 EXCEPTION_MARK;
duke@0 979 methodHandle m(THREAD, get_methodOop());
duke@0 980 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD);
duke@0 981 if( HAS_PENDING_EXCEPTION ) {
duke@0 982 CLEAR_PENDING_EXCEPTION;
duke@0 983 return true; // Declare that we may have unloaded classes
duke@0 984 }
duke@0 985 return has_unloaded;
duke@0 986 }
duke@0 987 }
duke@0 988
duke@0 989 // ------------------------------------------------------------------
duke@0 990 // ciMethod::is_klass_loaded
duke@0 991 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const {
duke@0 992 VM_ENTRY_MARK;
duke@0 993 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved);
duke@0 994 }
duke@0 995
duke@0 996 // ------------------------------------------------------------------
duke@0 997 // ciMethod::check_call
duke@0 998 bool ciMethod::check_call(int refinfo_index, bool is_static) const {
duke@0 999 VM_ENTRY_MARK;
duke@0 1000 {
duke@0 1001 EXCEPTION_MARK;
duke@0 1002 HandleMark hm(THREAD);
duke@0 1003 constantPoolHandle pool (THREAD, get_methodOop()->constants());
duke@0 1004 methodHandle spec_method;
duke@0 1005 KlassHandle spec_klass;
duke@0 1006 LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD);
duke@0 1007 if (HAS_PENDING_EXCEPTION) {
duke@0 1008 CLEAR_PENDING_EXCEPTION;
duke@0 1009 return false;
duke@0 1010 } else {
duke@0 1011 return (spec_method->is_static() == is_static);
duke@0 1012 }
duke@0 1013 }
duke@0 1014 return false;
duke@0 1015 }
duke@0 1016
duke@0 1017 // ------------------------------------------------------------------
duke@0 1018 // ciMethod::print_codes
duke@0 1019 //
duke@0 1020 // Print the bytecodes for this method.
duke@0 1021 void ciMethod::print_codes_on(outputStream* st) {
duke@0 1022 check_is_loaded();
duke@0 1023 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);)
duke@0 1024 }
duke@0 1025
duke@0 1026
duke@0 1027 #define FETCH_FLAG_FROM_VM(flag_accessor) { \
duke@0 1028 check_is_loaded(); \
duke@0 1029 VM_ENTRY_MARK; \
duke@0 1030 return get_methodOop()->flag_accessor(); \
duke@0 1031 }
duke@0 1032
duke@0 1033 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); }
duke@0 1034 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); }
duke@0 1035 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); }
duke@0 1036 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); }
duke@0 1037 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); }
duke@0 1038 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); }
duke@0 1039
duke@0 1040 BCEscapeAnalyzer *ciMethod::get_bcea() {
kvn@1570 1041 #ifdef COMPILER2
duke@0 1042 if (_bcea == NULL) {
duke@0 1043 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL);
duke@0 1044 }
duke@0 1045 return _bcea;
kvn@1570 1046 #else // COMPILER2
kvn@1570 1047 ShouldNotReachHere();
kvn@1570 1048 return NULL;
kvn@1570 1049 #endif // COMPILER2
duke@0 1050 }
duke@0 1051
duke@0 1052 ciMethodBlocks *ciMethod::get_method_blocks() {
duke@0 1053 Arena *arena = CURRENT_ENV->arena();
duke@0 1054 if (_method_blocks == NULL) {
duke@0 1055 _method_blocks = new (arena) ciMethodBlocks(arena, this);
duke@0 1056 }
duke@0 1057 return _method_blocks;
duke@0 1058 }
duke@0 1059
duke@0 1060 #undef FETCH_FLAG_FROM_VM
duke@0 1061
duke@0 1062
duke@0 1063 // ------------------------------------------------------------------
duke@0 1064 // ciMethod::print_codes
duke@0 1065 //
duke@0 1066 // Print a range of the bytecodes for this method.
duke@0 1067 void ciMethod::print_codes_on(int from, int to, outputStream* st) {
duke@0 1068 check_is_loaded();
duke@0 1069 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);)
duke@0 1070 }
duke@0 1071
duke@0 1072 // ------------------------------------------------------------------
duke@0 1073 // ciMethod::print_name
duke@0 1074 //
duke@0 1075 // Print the name of this method, including signature and some flags.
duke@0 1076 void ciMethod::print_name(outputStream* st) {
duke@0 1077 check_is_loaded();
duke@0 1078 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);)
duke@0 1079 }
duke@0 1080
duke@0 1081 // ------------------------------------------------------------------
duke@0 1082 // ciMethod::print_short_name
duke@0 1083 //
duke@0 1084 // Print the name of this method, without signature.
duke@0 1085 void ciMethod::print_short_name(outputStream* st) {
duke@0 1086 check_is_loaded();
duke@0 1087 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);)
duke@0 1088 }
duke@0 1089
duke@0 1090 // ------------------------------------------------------------------
duke@0 1091 // ciMethod::print_impl
duke@0 1092 //
duke@0 1093 // Implementation of the print method.
duke@0 1094 void ciMethod::print_impl(outputStream* st) {
duke@0 1095 ciObject::print_impl(st);
duke@0 1096 st->print(" name=");
duke@0 1097 name()->print_symbol_on(st);
duke@0 1098 st->print(" holder=");
duke@0 1099 holder()->print_name_on(st);
duke@0 1100 st->print(" signature=");
duke@0 1101 signature()->as_symbol()->print_symbol_on(st);
duke@0 1102 if (is_loaded()) {
duke@0 1103 st->print(" loaded=true flags=");
duke@0 1104 flags().print_member_flags(st);
duke@0 1105 } else {
duke@0 1106 st->print(" loaded=false");
duke@0 1107 }
duke@0 1108 }