annotate src/share/vm/ci/ciMethod.cpp @ 1707:d5d065957597

6953144: Tiered compilation Summary: Infrastructure for tiered compilation support (interpreter + c1 + c2) for 32 and 64 bit. Simple tiered policy implementation. Reviewed-by: kvn, never, phh, twisti
author iveresov
date Fri, 03 Sep 2010 17:51:07 -0700
parents 3e8fbc61cee8
children c93c652551b5
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();
iveresov@1707 52 _is_c1_compilable = !h_m()->is_not_c1_compilable();
iveresov@1707 53 _is_c2_compilable = !h_m()->is_not_c2_compilable();
duke@0 54 // Lazy fields, filled in on demand. Require allocation.
duke@0 55 _code = NULL;
duke@0 56 _exception_handlers = NULL;
duke@0 57 _liveness = NULL;
duke@0 58 _method_blocks = NULL;
twisti@1616 59 #if defined(COMPILER2) || defined(SHARK)
duke@0 60 _flow = NULL;
kvn@1570 61 _bcea = NULL;
twisti@1616 62 #endif // COMPILER2 || SHARK
duke@0 63
kvn@780 64 ciEnv *env = CURRENT_ENV;
iveresov@1707 65 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) {
duke@0 66 // 6328518 check hotswap conditions under the right lock.
duke@0 67 MutexLocker locker(Compile_lock);
duke@0 68 if (Dependencies::check_evol_method(h_m()) != NULL) {
iveresov@1707 69 _is_c1_compilable = false;
iveresov@1707 70 _is_c2_compilable = false;
duke@0 71 }
duke@0 72 } else {
duke@0 73 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
duke@0 74 }
duke@0 75
duke@0 76 if (instanceKlass::cast(h_m()->method_holder())->is_linked()) {
duke@0 77 _can_be_statically_bound = h_m()->can_be_statically_bound();
duke@0 78 } else {
duke@0 79 // Have to use a conservative value in this case.
duke@0 80 _can_be_statically_bound = false;
duke@0 81 }
duke@0 82
duke@0 83 // Adjust the definition of this condition to be more useful:
duke@0 84 // %%% take these conditions into account in vtable generation
duke@0 85 if (!_can_be_statically_bound && h_m()->is_private())
duke@0 86 _can_be_statically_bound = true;
duke@0 87 if (_can_be_statically_bound && h_m()->is_abstract())
duke@0 88 _can_be_statically_bound = false;
duke@0 89
duke@0 90 // generating _signature may allow GC and therefore move m.
duke@0 91 // These fields are always filled in.
duke@0 92 _name = env->get_object(h_m()->name())->as_symbol();
duke@0 93 _holder = env->get_object(h_m()->method_holder())->as_instance_klass();
duke@0 94 ciSymbol* sig_symbol = env->get_object(h_m()->signature())->as_symbol();
duke@0 95 _signature = new (env->arena()) ciSignature(_holder, sig_symbol);
duke@0 96 _method_data = NULL;
duke@0 97 // Take a snapshot of these values, so they will be commensurate with the MDO.
iveresov@1707 98 if (ProfileInterpreter || TieredCompilation) {
duke@0 99 int invcnt = h_m()->interpreter_invocation_count();
duke@0 100 // if the value overflowed report it as max int
duke@0 101 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;
duke@0 102 _interpreter_throwout_count = h_m()->interpreter_throwout_count();
duke@0 103 } else {
duke@0 104 _interpreter_invocation_count = 0;
duke@0 105 _interpreter_throwout_count = 0;
duke@0 106 }
duke@0 107 if (_interpreter_invocation_count == 0)
duke@0 108 _interpreter_invocation_count = 1;
duke@0 109 }
duke@0 110
duke@0 111
duke@0 112 // ------------------------------------------------------------------
duke@0 113 // ciMethod::ciMethod
duke@0 114 //
duke@0 115 // Unloaded method.
duke@0 116 ciMethod::ciMethod(ciInstanceKlass* holder,
duke@0 117 ciSymbol* name,
duke@0 118 ciSymbol* signature) : ciObject(ciMethodKlass::make()) {
duke@0 119 // These fields are always filled in.
duke@0 120 _name = name;
duke@0 121 _holder = holder;
duke@0 122 _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, signature);
duke@0 123 _intrinsic_id = vmIntrinsics::_none;
duke@0 124 _liveness = NULL;
duke@0 125 _can_be_statically_bound = false;
duke@0 126 _method_blocks = NULL;
duke@0 127 _method_data = NULL;
twisti@1616 128 #if defined(COMPILER2) || defined(SHARK)
duke@0 129 _flow = NULL;
kvn@1570 130 _bcea = NULL;
twisti@1616 131 #endif // COMPILER2 || SHARK
duke@0 132 }
duke@0 133
duke@0 134
duke@0 135 // ------------------------------------------------------------------
duke@0 136 // ciMethod::load_code
duke@0 137 //
duke@0 138 // Load the bytecodes and exception handler table for this method.
duke@0 139 void ciMethod::load_code() {
duke@0 140 VM_ENTRY_MARK;
duke@0 141 assert(is_loaded(), "only loaded methods have code");
duke@0 142
duke@0 143 methodOop me = get_methodOop();
duke@0 144 Arena* arena = CURRENT_THREAD_ENV->arena();
duke@0 145
duke@0 146 // Load the bytecodes.
duke@0 147 _code = (address)arena->Amalloc(code_size());
duke@0 148 memcpy(_code, me->code_base(), code_size());
duke@0 149
duke@0 150 // Revert any breakpoint bytecodes in ci's copy
kvn@27 151 if (me->number_of_breakpoints() > 0) {
duke@0 152 BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints();
duke@0 153 for (; bp != NULL; bp = bp->next()) {
duke@0 154 if (bp->match(me)) {
duke@0 155 code_at_put(bp->bci(), bp->orig_bytecode());
duke@0 156 }
duke@0 157 }
duke@0 158 }
duke@0 159
duke@0 160 // And load the exception table.
duke@0 161 typeArrayOop exc_table = me->exception_table();
duke@0 162
duke@0 163 // Allocate one extra spot in our list of exceptions. This
duke@0 164 // last entry will be used to represent the possibility that
duke@0 165 // an exception escapes the method. See ciExceptionHandlerStream
duke@0 166 // for details.
duke@0 167 _exception_handlers =
duke@0 168 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*)
duke@0 169 * (_handler_count + 1));
duke@0 170 if (_handler_count > 0) {
duke@0 171 for (int i=0; i<_handler_count; i++) {
duke@0 172 int base = i*4;
duke@0 173 _exception_handlers[i] = new (arena) ciExceptionHandler(
duke@0 174 holder(),
duke@0 175 /* start */ exc_table->int_at(base),
duke@0 176 /* limit */ exc_table->int_at(base+1),
duke@0 177 /* goto pc */ exc_table->int_at(base+2),
duke@0 178 /* cp index */ exc_table->int_at(base+3));
duke@0 179 }
duke@0 180 }
duke@0 181
duke@0 182 // Put an entry at the end of our list to represent the possibility
duke@0 183 // of exceptional exit.
duke@0 184 _exception_handlers[_handler_count] =
duke@0 185 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0);
duke@0 186
duke@0 187 if (CIPrintMethodCodes) {
duke@0 188 print_codes();
duke@0 189 }
duke@0 190 }
duke@0 191
duke@0 192
duke@0 193 // ------------------------------------------------------------------
duke@0 194 // ciMethod::has_linenumber_table
duke@0 195 //
duke@0 196 // length unknown until decompression
duke@0 197 bool ciMethod::has_linenumber_table() const {
duke@0 198 check_is_loaded();
duke@0 199 VM_ENTRY_MARK;
duke@0 200 return get_methodOop()->has_linenumber_table();
duke@0 201 }
duke@0 202
duke@0 203
duke@0 204 // ------------------------------------------------------------------
duke@0 205 // ciMethod::compressed_linenumber_table
duke@0 206 u_char* ciMethod::compressed_linenumber_table() const {
duke@0 207 check_is_loaded();
duke@0 208 VM_ENTRY_MARK;
duke@0 209 return get_methodOop()->compressed_linenumber_table();
duke@0 210 }
duke@0 211
duke@0 212
duke@0 213 // ------------------------------------------------------------------
duke@0 214 // ciMethod::line_number_from_bci
duke@0 215 int ciMethod::line_number_from_bci(int bci) const {
duke@0 216 check_is_loaded();
duke@0 217 VM_ENTRY_MARK;
duke@0 218 return get_methodOop()->line_number_from_bci(bci);
duke@0 219 }
duke@0 220
duke@0 221
duke@0 222 // ------------------------------------------------------------------
duke@0 223 // ciMethod::vtable_index
duke@0 224 //
duke@0 225 // Get the position of this method's entry in the vtable, if any.
duke@0 226 int ciMethod::vtable_index() {
duke@0 227 check_is_loaded();
duke@0 228 assert(holder()->is_linked(), "must be linked");
duke@0 229 VM_ENTRY_MARK;
duke@0 230 return get_methodOop()->vtable_index();
duke@0 231 }
duke@0 232
duke@0 233
twisti@1616 234 #ifdef SHARK
twisti@1616 235 // ------------------------------------------------------------------
twisti@1616 236 // ciMethod::itable_index
twisti@1616 237 //
twisti@1616 238 // Get the position of this method's entry in the itable, if any.
twisti@1616 239 int ciMethod::itable_index() {
twisti@1616 240 check_is_loaded();
twisti@1616 241 assert(holder()->is_linked(), "must be linked");
twisti@1616 242 VM_ENTRY_MARK;
twisti@1616 243 return klassItable::compute_itable_index(get_methodOop());
twisti@1616 244 }
twisti@1616 245 #endif // SHARK
twisti@1616 246
twisti@1616 247
duke@0 248 // ------------------------------------------------------------------
duke@0 249 // ciMethod::native_entry
duke@0 250 //
duke@0 251 // Get the address of this method's native code, if any.
duke@0 252 address ciMethod::native_entry() {
duke@0 253 check_is_loaded();
duke@0 254 assert(flags().is_native(), "must be native method");
duke@0 255 VM_ENTRY_MARK;
duke@0 256 methodOop method = get_methodOop();
duke@0 257 address entry = method->native_function();
duke@0 258 assert(entry != NULL, "must be valid entry point");
duke@0 259 return entry;
duke@0 260 }
duke@0 261
duke@0 262
duke@0 263 // ------------------------------------------------------------------
duke@0 264 // ciMethod::interpreter_entry
duke@0 265 //
duke@0 266 // Get the entry point for running this method in the interpreter.
duke@0 267 address ciMethod::interpreter_entry() {
duke@0 268 check_is_loaded();
duke@0 269 VM_ENTRY_MARK;
duke@0 270 methodHandle mh(THREAD, get_methodOop());
duke@0 271 return Interpreter::entry_for_method(mh);
duke@0 272 }
duke@0 273
duke@0 274
duke@0 275 // ------------------------------------------------------------------
duke@0 276 // ciMethod::uses_balanced_monitors
duke@0 277 //
duke@0 278 // Does this method use monitors in a strict stack-disciplined manner?
duke@0 279 bool ciMethod::has_balanced_monitors() {
duke@0 280 check_is_loaded();
duke@0 281 if (_balanced_monitors) return true;
duke@0 282
duke@0 283 // Analyze the method to see if monitors are used properly.
duke@0 284 VM_ENTRY_MARK;
duke@0 285 methodHandle method(THREAD, get_methodOop());
duke@0 286 assert(method->has_monitor_bytecodes(), "should have checked this");
duke@0 287
duke@0 288 // Check to see if a previous compilation computed the
duke@0 289 // monitor-matching analysis.
duke@0 290 if (method->guaranteed_monitor_matching()) {
duke@0 291 _balanced_monitors = true;
duke@0 292 return true;
duke@0 293 }
duke@0 294
duke@0 295 {
duke@0 296 EXCEPTION_MARK;
duke@0 297 ResourceMark rm(THREAD);
duke@0 298 GeneratePairingInfo gpi(method);
duke@0 299 gpi.compute_map(CATCH);
duke@0 300 if (!gpi.monitor_safe()) {
duke@0 301 return false;
duke@0 302 }
duke@0 303 method->set_guaranteed_monitor_matching();
duke@0 304 _balanced_monitors = true;
duke@0 305 }
duke@0 306 return true;
duke@0 307 }
duke@0 308
duke@0 309
duke@0 310 // ------------------------------------------------------------------
duke@0 311 // ciMethod::get_flow_analysis
duke@0 312 ciTypeFlow* ciMethod::get_flow_analysis() {
twisti@1616 313 #if defined(COMPILER2) || defined(SHARK)
duke@0 314 if (_flow == NULL) {
duke@0 315 ciEnv* env = CURRENT_ENV;
duke@0 316 _flow = new (env->arena()) ciTypeFlow(env, this);
duke@0 317 _flow->do_flow();
duke@0 318 }
duke@0 319 return _flow;
twisti@1616 320 #else // COMPILER2 || SHARK
duke@0 321 ShouldNotReachHere();
duke@0 322 return NULL;
twisti@1616 323 #endif // COMPILER2 || SHARK
duke@0 324 }
duke@0 325
duke@0 326
duke@0 327 // ------------------------------------------------------------------
duke@0 328 // ciMethod::get_osr_flow_analysis
duke@0 329 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) {
twisti@1616 330 #if defined(COMPILER2) || defined(SHARK)
duke@0 331 // OSR entry points are always place after a call bytecode of some sort
duke@0 332 assert(osr_bci >= 0, "must supply valid OSR entry point");
duke@0 333 ciEnv* env = CURRENT_ENV;
duke@0 334 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci);
duke@0 335 flow->do_flow();
duke@0 336 return flow;
twisti@1616 337 #else // COMPILER2 || SHARK
duke@0 338 ShouldNotReachHere();
duke@0 339 return NULL;
twisti@1616 340 #endif // COMPILER2 || SHARK
duke@0 341 }
duke@0 342
duke@0 343 // ------------------------------------------------------------------
never@991 344 // ciMethod::raw_liveness_at_bci
duke@0 345 //
duke@0 346 // Which local variables are live at a specific bci?
never@991 347 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) {
duke@0 348 check_is_loaded();
duke@0 349 if (_liveness == NULL) {
duke@0 350 // Create the liveness analyzer.
duke@0 351 Arena* arena = CURRENT_ENV->arena();
duke@0 352 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 353 _liveness->compute_liveness();
duke@0 354 }
never@991 355 return _liveness->get_liveness_at(bci);
never@991 356 }
never@991 357
never@991 358 // ------------------------------------------------------------------
never@991 359 // ciMethod::liveness_at_bci
never@991 360 //
never@991 361 // Which local variables are live at a specific bci? When debugging
never@991 362 // will return true for all locals in some cases to improve debug
never@991 363 // information.
never@991 364 MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
never@991 365 MethodLivenessResult result = raw_liveness_at_bci(bci);
kvn@780 366 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) {
duke@0 367 // Keep all locals live for the user's edification and amusement.
duke@0 368 result.at_put_range(0, result.size(), true);
duke@0 369 }
duke@0 370 return result;
duke@0 371 }
duke@0 372
duke@0 373 // ciMethod::live_local_oops_at_bci
duke@0 374 //
duke@0 375 // find all the live oops in the locals array for a particular bci
duke@0 376 // Compute what the interpreter believes by using the interpreter
duke@0 377 // oopmap generator. This is used as a double check during osr to
duke@0 378 // guard against conservative result from MethodLiveness making us
duke@0 379 // think a dead oop is live. MethodLiveness is conservative in the
duke@0 380 // sense that it may consider locals to be live which cannot be live,
duke@0 381 // like in the case where a local could contain an oop or a primitive
duke@0 382 // along different paths. In that case the local must be dead when
duke@0 383 // those paths merge. Since the interpreter's viewpoint is used when
duke@0 384 // gc'ing an interpreter frame we need to use its viewpoint during
duke@0 385 // OSR when loading the locals.
duke@0 386
duke@0 387 BitMap ciMethod::live_local_oops_at_bci(int bci) {
duke@0 388 VM_ENTRY_MARK;
duke@0 389 InterpreterOopMap mask;
duke@0 390 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask);
duke@0 391 int mask_size = max_locals();
duke@0 392 BitMap result(mask_size);
duke@0 393 result.clear();
duke@0 394 int i;
duke@0 395 for (i = 0; i < mask_size ; i++ ) {
duke@0 396 if (mask.is_oop(i)) result.set_bit(i);
duke@0 397 }
duke@0 398 return result;
duke@0 399 }
duke@0 400
duke@0 401
duke@0 402 #ifdef COMPILER1
duke@0 403 // ------------------------------------------------------------------
duke@0 404 // ciMethod::bci_block_start
duke@0 405 //
duke@0 406 // Marks all bcis where a new basic block starts
duke@0 407 const BitMap ciMethod::bci_block_start() {
duke@0 408 check_is_loaded();
duke@0 409 if (_liveness == NULL) {
duke@0 410 // Create the liveness analyzer.
duke@0 411 Arena* arena = CURRENT_ENV->arena();
duke@0 412 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 413 _liveness->compute_liveness();
duke@0 414 }
duke@0 415
duke@0 416 return _liveness->get_bci_block_start();
duke@0 417 }
duke@0 418 #endif // COMPILER1
duke@0 419
duke@0 420
duke@0 421 // ------------------------------------------------------------------
duke@0 422 // ciMethod::call_profile_at_bci
duke@0 423 //
duke@0 424 // Get the ciCallProfile for the invocation of this method.
duke@0 425 // Also reports receiver types for non-call type checks (if TypeProfileCasts).
duke@0 426 ciCallProfile ciMethod::call_profile_at_bci(int bci) {
duke@0 427 ResourceMark rm;
duke@0 428 ciCallProfile result;
duke@0 429 if (method_data() != NULL && method_data()->is_mature()) {
duke@0 430 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 431 if (data != NULL && data->is_CounterData()) {
duke@0 432 // Every profiled call site has a counter.
duke@0 433 int count = data->as_CounterData()->count();
duke@0 434
duke@0 435 if (!data->is_ReceiverTypeData()) {
duke@0 436 result._receiver_count[0] = 0; // that's a definite zero
duke@0 437 } else { // ReceiverTypeData is a subclass of CounterData
duke@0 438 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
duke@0 439 // In addition, virtual call sites have receiver type information
duke@0 440 int receivers_count_total = 0;
duke@0 441 int morphism = 0;
iveresov@1707 442 // Precompute morphism for the possible fixup
duke@0 443 for (uint i = 0; i < call->row_limit(); i++) {
duke@0 444 ciKlass* receiver = call->receiver(i);
duke@0 445 if (receiver == NULL) continue;
iveresov@1707 446 morphism++;
iveresov@1707 447 }
iveresov@1707 448 int epsilon = 0;
iveresov@1707 449 if (TieredCompilation && ProfileInterpreter) {
iveresov@1707 450 // Interpreter and C1 treat final and special invokes differently.
iveresov@1707 451 // C1 will record a type, whereas the interpreter will just
iveresov@1707 452 // increment the count. Detect this case.
iveresov@1707 453 if (morphism == 1 && count > 0) {
iveresov@1707 454 epsilon = count;
iveresov@1707 455 count = 0;
iveresov@1707 456 }
iveresov@1707 457 }
iveresov@1707 458 for (uint i = 0; i < call->row_limit(); i++) {
iveresov@1707 459 ciKlass* receiver = call->receiver(i);
iveresov@1707 460 if (receiver == NULL) continue;
iveresov@1707 461 int rcount = call->receiver_count(i) + epsilon;
duke@0 462 if (rcount == 0) rcount = 1; // Should be valid value
duke@0 463 receivers_count_total += rcount;
duke@0 464 // Add the receiver to result data.
duke@0 465 result.add_receiver(receiver, rcount);
duke@0 466 // If we extend profiling to record methods,
duke@0 467 // we will set result._method also.
duke@0 468 }
duke@0 469 // Determine call site's morphism.
kvn@1206 470 // The call site count is 0 with known morphism (onlt 1 or 2 receivers)
kvn@1206 471 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof.
kvn@1206 472 // The call site count is > 0 in the case of a polymorphic virtual call.
kvn@1206 473 if (morphism > 0 && morphism == result._limit) {
kvn@1206 474 // The morphism <= MorphismLimit.
kvn@1206 475 if ((morphism < ciCallProfile::MorphismLimit) ||
kvn@1206 476 (morphism == ciCallProfile::MorphismLimit && count == 0)) {
kvn@1206 477 #ifdef ASSERT
kvn@1206 478 if (count > 0) {
kvn@1251 479 this->print_short_name(tty);
kvn@1251 480 tty->print_cr(" @ bci:%d", bci);
kvn@1206 481 this->print_codes();
kvn@1206 482 assert(false, "this call site should not be polymorphic");
kvn@1206 483 }
kvn@1206 484 #endif
duke@0 485 result._morphism = morphism;
duke@0 486 }
duke@0 487 }
duke@0 488 // Make the count consistent if this is a call profile. If count is
duke@0 489 // zero or less, presume that this is a typecheck profile and
duke@0 490 // do nothing. Otherwise, increase count to be the sum of all
duke@0 491 // receiver's counts.
kvn@1206 492 if (count >= 0) {
kvn@1206 493 count += receivers_count_total;
duke@0 494 }
duke@0 495 }
duke@0 496 result._count = count;
duke@0 497 }
duke@0 498 }
duke@0 499 return result;
duke@0 500 }
duke@0 501
duke@0 502 // ------------------------------------------------------------------
duke@0 503 // Add new receiver and sort data by receiver's profile count.
duke@0 504 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) {
duke@0 505 // Add new receiver and sort data by receiver's counts when we have space
duke@0 506 // for it otherwise replace the less called receiver (less called receiver
duke@0 507 // is placed to the last array element which is not used).
duke@0 508 // First array's element contains most called receiver.
duke@0 509 int i = _limit;
duke@0 510 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) {
duke@0 511 _receiver[i] = _receiver[i-1];
duke@0 512 _receiver_count[i] = _receiver_count[i-1];
duke@0 513 }
duke@0 514 _receiver[i] = receiver;
duke@0 515 _receiver_count[i] = receiver_count;
duke@0 516 if (_limit < MorphismLimit) _limit++;
duke@0 517 }
duke@0 518
duke@0 519 // ------------------------------------------------------------------
duke@0 520 // ciMethod::find_monomorphic_target
duke@0 521 //
duke@0 522 // Given a certain calling environment, find the monomorphic target
duke@0 523 // for the call. Return NULL if the call is not monomorphic in
duke@0 524 // its calling environment, or if there are only abstract methods.
duke@0 525 // The returned method is never abstract.
duke@0 526 // Note: If caller uses a non-null result, it must inform dependencies
duke@0 527 // via assert_unique_concrete_method or assert_leaf_type.
duke@0 528 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,
duke@0 529 ciInstanceKlass* callee_holder,
duke@0 530 ciInstanceKlass* actual_recv) {
duke@0 531 check_is_loaded();
duke@0 532
duke@0 533 if (actual_recv->is_interface()) {
duke@0 534 // %%% We cannot trust interface types, yet. See bug 6312651.
duke@0 535 return NULL;
duke@0 536 }
duke@0 537
duke@0 538 ciMethod* root_m = resolve_invoke(caller, actual_recv);
duke@0 539 if (root_m == NULL) {
duke@0 540 // Something went wrong looking up the actual receiver method.
duke@0 541 return NULL;
duke@0 542 }
duke@0 543 assert(!root_m->is_abstract(), "resolve_invoke promise");
duke@0 544
duke@0 545 // Make certain quick checks even if UseCHA is false.
duke@0 546
duke@0 547 // Is it private or final?
duke@0 548 if (root_m->can_be_statically_bound()) {
duke@0 549 return root_m;
duke@0 550 }
duke@0 551
duke@0 552 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) {
duke@0 553 // Easy case. There is no other place to put a method, so don't bother
duke@0 554 // to go through the VM_ENTRY_MARK and all the rest.
duke@0 555 return root_m;
duke@0 556 }
duke@0 557
duke@0 558 // Array methods (clone, hashCode, etc.) are always statically bound.
duke@0 559 // If we were to see an array type here, we'd return root_m.
duke@0 560 // However, this method processes only ciInstanceKlasses. (See 4962591.)
duke@0 561 // The inline_native_clone intrinsic narrows Object to T[] properly,
duke@0 562 // so there is no need to do the same job here.
duke@0 563
duke@0 564 if (!UseCHA) return NULL;
duke@0 565
duke@0 566 VM_ENTRY_MARK;
duke@0 567
duke@0 568 methodHandle target;
duke@0 569 {
duke@0 570 MutexLocker locker(Compile_lock);
duke@0 571 klassOop context = actual_recv->get_klassOop();
duke@0 572 target = Dependencies::find_unique_concrete_method(context,
duke@0 573 root_m->get_methodOop());
duke@0 574 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.
duke@0 575 }
duke@0 576
duke@0 577 #ifndef PRODUCT
duke@0 578 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) {
duke@0 579 tty->print("found a non-root unique target method");
duke@0 580 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name());
duke@0 581 tty->print(" method = ");
duke@0 582 target->print_short_name(tty);
duke@0 583 tty->cr();
duke@0 584 }
duke@0 585 #endif //PRODUCT
duke@0 586
duke@0 587 if (target() == NULL) {
duke@0 588 return NULL;
duke@0 589 }
duke@0 590 if (target() == root_m->get_methodOop()) {
duke@0 591 return root_m;
duke@0 592 }
duke@0 593 if (!root_m->is_public() &&
duke@0 594 !root_m->is_protected()) {
duke@0 595 // If we are going to reason about inheritance, it's easiest
duke@0 596 // if the method in question is public, protected, or private.
duke@0 597 // If the answer is not root_m, it is conservatively correct
duke@0 598 // to return NULL, even if the CHA encountered irrelevant
duke@0 599 // methods in other packages.
duke@0 600 // %%% TO DO: Work out logic for package-private methods
duke@0 601 // with the same name but different vtable indexes.
duke@0 602 return NULL;
duke@0 603 }
duke@0 604 return CURRENT_THREAD_ENV->get_object(target())->as_method();
duke@0 605 }
duke@0 606
duke@0 607 // ------------------------------------------------------------------
duke@0 608 // ciMethod::resolve_invoke
duke@0 609 //
duke@0 610 // Given a known receiver klass, find the target for the call.
duke@0 611 // Return NULL if the call has no target or the target is abstract.
duke@0 612 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) {
duke@0 613 check_is_loaded();
duke@0 614 VM_ENTRY_MARK;
duke@0 615
duke@0 616 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 617 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop());
duke@0 618 KlassHandle h_resolved (THREAD, holder()->get_klassOop());
duke@0 619 symbolHandle h_name (THREAD, name()->get_symbolOop());
duke@0 620 symbolHandle h_signature (THREAD, signature()->get_symbolOop());
duke@0 621
duke@0 622 methodHandle m;
duke@0 623 // Only do exact lookup if receiver klass has been linked. Otherwise,
duke@0 624 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 625 if (h_recv->oop_is_javaArray()
duke@0 626 ||
duke@0 627 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) {
duke@0 628 if (holder()->is_interface()) {
duke@0 629 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 630 } else {
duke@0 631 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 632 }
duke@0 633 }
duke@0 634
duke@0 635 if (m.is_null()) {
duke@0 636 // Return NULL only if there was a problem with lookup (uninitialized class, etc.)
duke@0 637 return NULL;
duke@0 638 }
duke@0 639
duke@0 640 ciMethod* result = this;
duke@0 641 if (m() != get_methodOop()) {
duke@0 642 result = CURRENT_THREAD_ENV->get_object(m())->as_method();
duke@0 643 }
duke@0 644
duke@0 645 // Don't return abstract methods because they aren't
duke@0 646 // optimizable or interesting.
duke@0 647 if (result->is_abstract()) {
duke@0 648 return NULL;
duke@0 649 } else {
duke@0 650 return result;
duke@0 651 }
duke@0 652 }
duke@0 653
duke@0 654 // ------------------------------------------------------------------
duke@0 655 // ciMethod::resolve_vtable_index
duke@0 656 //
duke@0 657 // Given a known receiver klass, find the vtable index for the call.
duke@0 658 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown.
duke@0 659 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) {
duke@0 660 check_is_loaded();
duke@0 661
duke@0 662 int vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 663 // Only do lookup if receiver klass has been linked. Otherwise,
duke@0 664 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 665 if (!receiver->is_interface()
duke@0 666 && (!receiver->is_instance_klass() ||
duke@0 667 receiver->as_instance_klass()->is_linked())) {
duke@0 668 VM_ENTRY_MARK;
duke@0 669
duke@0 670 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 671 KlassHandle h_recv (THREAD, receiver->get_klassOop());
duke@0 672 symbolHandle h_name (THREAD, name()->get_symbolOop());
duke@0 673 symbolHandle h_signature (THREAD, signature()->get_symbolOop());
duke@0 674
duke@0 675 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass);
duke@0 676 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
duke@0 677 // A statically bound method. Return "no such index".
duke@0 678 vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 679 }
duke@0 680 }
duke@0 681
duke@0 682 return vtable_index;
duke@0 683 }
duke@0 684
duke@0 685 // ------------------------------------------------------------------
duke@0 686 // ciMethod::interpreter_call_site_count
duke@0 687 int ciMethod::interpreter_call_site_count(int bci) {
duke@0 688 if (method_data() != NULL) {
duke@0 689 ResourceMark rm;
duke@0 690 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 691 if (data != NULL && data->is_CounterData()) {
duke@0 692 return scale_count(data->as_CounterData()->count());
duke@0 693 }
duke@0 694 }
duke@0 695 return -1; // unknown
duke@0 696 }
duke@0 697
duke@0 698 // ------------------------------------------------------------------
duke@0 699 // Adjust a CounterData count to be commensurate with
duke@0 700 // interpreter_invocation_count. If the MDO exists for
duke@0 701 // only 25% of the time the method exists, then the
duke@0 702 // counts in the MDO should be scaled by 4X, so that
duke@0 703 // they can be usefully and stably compared against the
duke@0 704 // invocation counts in methods.
duke@0 705 int ciMethod::scale_count(int count, float prof_factor) {
duke@0 706 if (count > 0 && method_data() != NULL) {
iveresov@1707 707 int counter_life;
duke@0 708 int method_life = interpreter_invocation_count();
iveresov@1707 709 if (TieredCompilation) {
iveresov@1707 710 // In tiered the MDO's life is measured directly, so just use the snapshotted counters
iveresov@1707 711 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count());
iveresov@1707 712 } else {
iveresov@1707 713 int current_mileage = method_data()->current_mileage();
iveresov@1707 714 int creation_mileage = method_data()->creation_mileage();
iveresov@1707 715 counter_life = current_mileage - creation_mileage;
iveresov@1707 716 }
iveresov@1707 717
duke@0 718 // counter_life due to backedge_counter could be > method_life
duke@0 719 if (counter_life > method_life)
duke@0 720 counter_life = method_life;
duke@0 721 if (0 < counter_life && counter_life <= method_life) {
duke@0 722 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5);
duke@0 723 count = (count > 0) ? count : 1;
duke@0 724 }
duke@0 725 }
duke@0 726 return count;
duke@0 727 }
duke@0 728
duke@0 729 // ------------------------------------------------------------------
jrose@710 730 // invokedynamic support
twisti@1485 731
twisti@1485 732 // ------------------------------------------------------------------
twisti@1485 733 // ciMethod::is_method_handle_invoke
jrose@710 734 //
jrose@1585 735 // Return true if the method is an instance of one of the two
jrose@1585 736 // signature-polymorphic MethodHandle methods, invokeExact or invokeGeneric.
twisti@1137 737 bool ciMethod::is_method_handle_invoke() const {
jrose@1585 738 if (!is_loaded()) return false;
jrose@1585 739 VM_ENTRY_MARK;
jrose@1585 740 return get_methodOop()->is_method_handle_invoke();
jrose@710 741 }
jrose@710 742
twisti@1485 743 // ------------------------------------------------------------------
twisti@1485 744 // ciMethod::is_method_handle_adapter
twisti@1485 745 //
twisti@1485 746 // Return true if the method is a generated MethodHandle adapter.
jrose@1585 747 // These are built by MethodHandleCompiler.
twisti@1152 748 bool ciMethod::is_method_handle_adapter() const {
jrose@1585 749 if (!is_loaded()) return false;
twisti@1152 750 VM_ENTRY_MARK;
twisti@1152 751 return get_methodOop()->is_method_handle_adapter();
twisti@1152 752 }
twisti@1152 753
jrose@710 754 ciInstance* ciMethod::method_handle_type() {
jrose@710 755 check_is_loaded();
jrose@710 756 VM_ENTRY_MARK;
jrose@710 757 oop mtype = get_methodOop()->method_handle_type();
jrose@710 758 return CURRENT_THREAD_ENV->get_object(mtype)->as_instance();
jrose@710 759 }
jrose@710 760
jrose@710 761
jrose@710 762 // ------------------------------------------------------------------
duke@0 763 // ciMethod::build_method_data
duke@0 764 //
duke@0 765 // Generate new methodDataOop objects at compile time.
duke@0 766 void ciMethod::build_method_data(methodHandle h_m) {
duke@0 767 EXCEPTION_CONTEXT;
duke@0 768 if (is_native() || is_abstract() || h_m()->is_accessor()) return;
duke@0 769 if (h_m()->method_data() == NULL) {
duke@0 770 methodOopDesc::build_interpreter_method_data(h_m, THREAD);
duke@0 771 if (HAS_PENDING_EXCEPTION) {
duke@0 772 CLEAR_PENDING_EXCEPTION;
duke@0 773 }
duke@0 774 }
duke@0 775 if (h_m()->method_data() != NULL) {
duke@0 776 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 777 _method_data->load_data();
duke@0 778 } else {
duke@0 779 _method_data = CURRENT_ENV->get_empty_methodData();
duke@0 780 }
duke@0 781 }
duke@0 782
duke@0 783 // public, retroactive version
duke@0 784 void ciMethod::build_method_data() {
duke@0 785 if (_method_data == NULL || _method_data->is_empty()) {
duke@0 786 GUARDED_VM_ENTRY({
duke@0 787 build_method_data(get_methodOop());
duke@0 788 });
duke@0 789 }
duke@0 790 }
duke@0 791
duke@0 792
duke@0 793 // ------------------------------------------------------------------
duke@0 794 // ciMethod::method_data
duke@0 795 //
duke@0 796 ciMethodData* ciMethod::method_data() {
duke@0 797 if (_method_data != NULL) {
duke@0 798 return _method_data;
duke@0 799 }
duke@0 800 VM_ENTRY_MARK;
duke@0 801 ciEnv* env = CURRENT_ENV;
duke@0 802 Thread* my_thread = JavaThread::current();
duke@0 803 methodHandle h_m(my_thread, get_methodOop());
duke@0 804
iveresov@1707 805 // Create an MDO for the inlinee
iveresov@1707 806 if (TieredCompilation && is_c1_compile(env->comp_level())) {
duke@0 807 build_method_data(h_m);
duke@0 808 }
duke@0 809
duke@0 810 if (h_m()->method_data() != NULL) {
duke@0 811 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 812 _method_data->load_data();
duke@0 813 } else {
duke@0 814 _method_data = CURRENT_ENV->get_empty_methodData();
duke@0 815 }
duke@0 816 return _method_data;
duke@0 817
duke@0 818 }
duke@0 819
duke@0 820
duke@0 821 // ------------------------------------------------------------------
duke@0 822 // ciMethod::will_link
duke@0 823 //
duke@0 824 // Will this method link in a specific calling context?
duke@0 825 bool ciMethod::will_link(ciKlass* accessing_klass,
duke@0 826 ciKlass* declared_method_holder,
duke@0 827 Bytecodes::Code bc) {
duke@0 828 if (!is_loaded()) {
duke@0 829 // Method lookup failed.
duke@0 830 return false;
duke@0 831 }
duke@0 832
duke@0 833 // The link checks have been front-loaded into the get_method
duke@0 834 // call. This method (ciMethod::will_link()) will be removed
duke@0 835 // in the future.
duke@0 836
duke@0 837 return true;
duke@0 838 }
duke@0 839
duke@0 840 // ------------------------------------------------------------------
duke@0 841 // ciMethod::should_exclude
duke@0 842 //
duke@0 843 // Should this method be excluded from compilation?
duke@0 844 bool ciMethod::should_exclude() {
duke@0 845 check_is_loaded();
duke@0 846 VM_ENTRY_MARK;
duke@0 847 methodHandle mh(THREAD, get_methodOop());
duke@0 848 bool ignore;
duke@0 849 return CompilerOracle::should_exclude(mh, ignore);
duke@0 850 }
duke@0 851
duke@0 852 // ------------------------------------------------------------------
duke@0 853 // ciMethod::should_inline
duke@0 854 //
duke@0 855 // Should this method be inlined during compilation?
duke@0 856 bool ciMethod::should_inline() {
duke@0 857 check_is_loaded();
duke@0 858 VM_ENTRY_MARK;
duke@0 859 methodHandle mh(THREAD, get_methodOop());
duke@0 860 return CompilerOracle::should_inline(mh);
duke@0 861 }
duke@0 862
duke@0 863 // ------------------------------------------------------------------
duke@0 864 // ciMethod::should_not_inline
duke@0 865 //
duke@0 866 // Should this method be disallowed from inlining during compilation?
duke@0 867 bool ciMethod::should_not_inline() {
duke@0 868 check_is_loaded();
duke@0 869 VM_ENTRY_MARK;
duke@0 870 methodHandle mh(THREAD, get_methodOop());
duke@0 871 return CompilerOracle::should_not_inline(mh);
duke@0 872 }
duke@0 873
duke@0 874 // ------------------------------------------------------------------
duke@0 875 // ciMethod::should_print_assembly
duke@0 876 //
duke@0 877 // Should the compiler print the generated code for this method?
duke@0 878 bool ciMethod::should_print_assembly() {
duke@0 879 check_is_loaded();
duke@0 880 VM_ENTRY_MARK;
duke@0 881 methodHandle mh(THREAD, get_methodOop());
duke@0 882 return CompilerOracle::should_print(mh);
duke@0 883 }
duke@0 884
duke@0 885 // ------------------------------------------------------------------
duke@0 886 // ciMethod::break_at_execute
duke@0 887 //
duke@0 888 // Should the compiler insert a breakpoint into the generated code
duke@0 889 // method?
duke@0 890 bool ciMethod::break_at_execute() {
duke@0 891 check_is_loaded();
duke@0 892 VM_ENTRY_MARK;
duke@0 893 methodHandle mh(THREAD, get_methodOop());
duke@0 894 return CompilerOracle::should_break_at(mh);
duke@0 895 }
duke@0 896
duke@0 897 // ------------------------------------------------------------------
duke@0 898 // ciMethod::has_option
duke@0 899 //
duke@0 900 bool ciMethod::has_option(const char* option) {
duke@0 901 check_is_loaded();
duke@0 902 VM_ENTRY_MARK;
duke@0 903 methodHandle mh(THREAD, get_methodOop());
duke@0 904 return CompilerOracle::has_option_string(mh, option);
duke@0 905 }
duke@0 906
duke@0 907 // ------------------------------------------------------------------
duke@0 908 // ciMethod::can_be_compiled
duke@0 909 //
duke@0 910 // Have previous compilations of this method succeeded?
duke@0 911 bool ciMethod::can_be_compiled() {
duke@0 912 check_is_loaded();
iveresov@1707 913 ciEnv* env = CURRENT_ENV;
iveresov@1707 914 if (is_c1_compile(env->comp_level())) {
iveresov@1707 915 return _is_c1_compilable;
iveresov@1707 916 }
iveresov@1707 917 return _is_c2_compilable;
duke@0 918 }
duke@0 919
duke@0 920 // ------------------------------------------------------------------
duke@0 921 // ciMethod::set_not_compilable
duke@0 922 //
duke@0 923 // Tell the VM that this method cannot be compiled at all.
duke@0 924 void ciMethod::set_not_compilable() {
duke@0 925 check_is_loaded();
duke@0 926 VM_ENTRY_MARK;
iveresov@1707 927 ciEnv* env = CURRENT_ENV;
iveresov@1707 928 if (is_c1_compile(env->comp_level())) {
iveresov@1707 929 _is_c1_compilable = false;
iveresov@1707 930 } else {
iveresov@1707 931 _is_c2_compilable = false;
iveresov@1707 932 }
iveresov@1707 933 get_methodOop()->set_not_compilable(env->comp_level());
duke@0 934 }
duke@0 935
duke@0 936 // ------------------------------------------------------------------
duke@0 937 // ciMethod::can_be_osr_compiled
duke@0 938 //
duke@0 939 // Have previous compilations of this method succeeded?
duke@0 940 //
duke@0 941 // Implementation note: the VM does not currently keep track
duke@0 942 // of failed OSR compilations per bci. The entry_bci parameter
duke@0 943 // is currently unused.
duke@0 944 bool ciMethod::can_be_osr_compiled(int entry_bci) {
duke@0 945 check_is_loaded();
duke@0 946 VM_ENTRY_MARK;
iveresov@1707 947 ciEnv* env = CURRENT_ENV;
iveresov@1707 948 return !get_methodOop()->is_not_osr_compilable(env->comp_level());
duke@0 949 }
duke@0 950
duke@0 951 // ------------------------------------------------------------------
duke@0 952 // ciMethod::has_compiled_code
duke@0 953 bool ciMethod::has_compiled_code() {
duke@0 954 VM_ENTRY_MARK;
duke@0 955 return get_methodOop()->code() != NULL;
duke@0 956 }
duke@0 957
iveresov@1707 958 int ciMethod::comp_level() {
iveresov@1707 959 check_is_loaded();
iveresov@1707 960 VM_ENTRY_MARK;
iveresov@1707 961 nmethod* nm = get_methodOop()->code();
iveresov@1707 962 if (nm != NULL) return nm->comp_level();
iveresov@1707 963 return 0;
iveresov@1707 964 }
iveresov@1707 965
duke@0 966 // ------------------------------------------------------------------
duke@0 967 // ciMethod::instructions_size
twisti@1672 968 //
twisti@1672 969 // This is a rough metric for "fat" methods, compared before inlining
twisti@1672 970 // with InlineSmallCode. The CodeBlob::code_size accessor includes
twisti@1672 971 // junk like exception handler, stubs, and constant table, which are
twisti@1672 972 // not highly relevant to an inlined method. So we use the more
twisti@1672 973 // specific accessor nmethod::insts_size.
iveresov@1707 974 int ciMethod::instructions_size(int comp_level) {
duke@0 975 GUARDED_VM_ENTRY(
duke@0 976 nmethod* code = get_methodOop()->code();
iveresov@1707 977 if (code != NULL && (comp_level == CompLevel_any || comp_level == code->comp_level())) {
iveresov@1707 978 return code->code_end() - code->verified_entry_point();
duke@0 979 }
iveresov@1707 980 return 0;
duke@0 981 )
duke@0 982 }
duke@0 983
duke@0 984 // ------------------------------------------------------------------
duke@0 985 // ciMethod::log_nmethod_identity
duke@0 986 void ciMethod::log_nmethod_identity(xmlStream* log) {
duke@0 987 GUARDED_VM_ENTRY(
duke@0 988 nmethod* code = get_methodOop()->code();
duke@0 989 if (code != NULL) {
duke@0 990 code->log_identity(log);
duke@0 991 }
duke@0 992 )
duke@0 993 }
duke@0 994
duke@0 995 // ------------------------------------------------------------------
duke@0 996 // ciMethod::is_not_reached
duke@0 997 bool ciMethod::is_not_reached(int bci) {
duke@0 998 check_is_loaded();
duke@0 999 VM_ENTRY_MARK;
duke@0 1000 return Interpreter::is_not_reached(
duke@0 1001 methodHandle(THREAD, get_methodOop()), bci);
duke@0 1002 }
duke@0 1003
duke@0 1004 // ------------------------------------------------------------------
duke@0 1005 // ciMethod::was_never_executed
duke@0 1006 bool ciMethod::was_executed_more_than(int times) {
duke@0 1007 VM_ENTRY_MARK;
duke@0 1008 return get_methodOop()->was_executed_more_than(times);
duke@0 1009 }
duke@0 1010
duke@0 1011 // ------------------------------------------------------------------
duke@0 1012 // ciMethod::has_unloaded_classes_in_signature
duke@0 1013 bool ciMethod::has_unloaded_classes_in_signature() {
duke@0 1014 VM_ENTRY_MARK;
duke@0 1015 {
duke@0 1016 EXCEPTION_MARK;
duke@0 1017 methodHandle m(THREAD, get_methodOop());
duke@0 1018 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD);
duke@0 1019 if( HAS_PENDING_EXCEPTION ) {
duke@0 1020 CLEAR_PENDING_EXCEPTION;
duke@0 1021 return true; // Declare that we may have unloaded classes
duke@0 1022 }
duke@0 1023 return has_unloaded;
duke@0 1024 }
duke@0 1025 }
duke@0 1026
duke@0 1027 // ------------------------------------------------------------------
duke@0 1028 // ciMethod::is_klass_loaded
duke@0 1029 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const {
duke@0 1030 VM_ENTRY_MARK;
duke@0 1031 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved);
duke@0 1032 }
duke@0 1033
duke@0 1034 // ------------------------------------------------------------------
duke@0 1035 // ciMethod::check_call
duke@0 1036 bool ciMethod::check_call(int refinfo_index, bool is_static) const {
duke@0 1037 VM_ENTRY_MARK;
duke@0 1038 {
duke@0 1039 EXCEPTION_MARK;
duke@0 1040 HandleMark hm(THREAD);
duke@0 1041 constantPoolHandle pool (THREAD, get_methodOop()->constants());
duke@0 1042 methodHandle spec_method;
duke@0 1043 KlassHandle spec_klass;
duke@0 1044 LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD);
duke@0 1045 if (HAS_PENDING_EXCEPTION) {
duke@0 1046 CLEAR_PENDING_EXCEPTION;
duke@0 1047 return false;
duke@0 1048 } else {
duke@0 1049 return (spec_method->is_static() == is_static);
duke@0 1050 }
duke@0 1051 }
duke@0 1052 return false;
duke@0 1053 }
duke@0 1054
duke@0 1055 // ------------------------------------------------------------------
duke@0 1056 // ciMethod::print_codes
duke@0 1057 //
duke@0 1058 // Print the bytecodes for this method.
duke@0 1059 void ciMethod::print_codes_on(outputStream* st) {
duke@0 1060 check_is_loaded();
duke@0 1061 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);)
duke@0 1062 }
duke@0 1063
duke@0 1064
duke@0 1065 #define FETCH_FLAG_FROM_VM(flag_accessor) { \
duke@0 1066 check_is_loaded(); \
duke@0 1067 VM_ENTRY_MARK; \
duke@0 1068 return get_methodOop()->flag_accessor(); \
duke@0 1069 }
duke@0 1070
duke@0 1071 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); }
duke@0 1072 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); }
duke@0 1073 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); }
duke@0 1074 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); }
duke@0 1075 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); }
duke@0 1076 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); }
duke@0 1077
duke@0 1078 BCEscapeAnalyzer *ciMethod::get_bcea() {
kvn@1570 1079 #ifdef COMPILER2
duke@0 1080 if (_bcea == NULL) {
duke@0 1081 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL);
duke@0 1082 }
duke@0 1083 return _bcea;
kvn@1570 1084 #else // COMPILER2
kvn@1570 1085 ShouldNotReachHere();
kvn@1570 1086 return NULL;
kvn@1570 1087 #endif // COMPILER2
duke@0 1088 }
duke@0 1089
duke@0 1090 ciMethodBlocks *ciMethod::get_method_blocks() {
duke@0 1091 Arena *arena = CURRENT_ENV->arena();
duke@0 1092 if (_method_blocks == NULL) {
duke@0 1093 _method_blocks = new (arena) ciMethodBlocks(arena, this);
duke@0 1094 }
duke@0 1095 return _method_blocks;
duke@0 1096 }
duke@0 1097
duke@0 1098 #undef FETCH_FLAG_FROM_VM
duke@0 1099
duke@0 1100
duke@0 1101 // ------------------------------------------------------------------
duke@0 1102 // ciMethod::print_codes
duke@0 1103 //
duke@0 1104 // Print a range of the bytecodes for this method.
duke@0 1105 void ciMethod::print_codes_on(int from, int to, outputStream* st) {
duke@0 1106 check_is_loaded();
duke@0 1107 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);)
duke@0 1108 }
duke@0 1109
duke@0 1110 // ------------------------------------------------------------------
duke@0 1111 // ciMethod::print_name
duke@0 1112 //
duke@0 1113 // Print the name of this method, including signature and some flags.
duke@0 1114 void ciMethod::print_name(outputStream* st) {
duke@0 1115 check_is_loaded();
duke@0 1116 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);)
duke@0 1117 }
duke@0 1118
duke@0 1119 // ------------------------------------------------------------------
duke@0 1120 // ciMethod::print_short_name
duke@0 1121 //
duke@0 1122 // Print the name of this method, without signature.
duke@0 1123 void ciMethod::print_short_name(outputStream* st) {
duke@0 1124 check_is_loaded();
duke@0 1125 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);)
duke@0 1126 }
duke@0 1127
duke@0 1128 // ------------------------------------------------------------------
duke@0 1129 // ciMethod::print_impl
duke@0 1130 //
duke@0 1131 // Implementation of the print method.
duke@0 1132 void ciMethod::print_impl(outputStream* st) {
duke@0 1133 ciObject::print_impl(st);
duke@0 1134 st->print(" name=");
duke@0 1135 name()->print_symbol_on(st);
duke@0 1136 st->print(" holder=");
duke@0 1137 holder()->print_name_on(st);
duke@0 1138 st->print(" signature=");
duke@0 1139 signature()->as_symbol()->print_symbol_on(st);
duke@0 1140 if (is_loaded()) {
duke@0 1141 st->print(" loaded=true flags=");
duke@0 1142 flags().print_member_flags(st);
duke@0 1143 } else {
duke@0 1144 st->print(" loaded=false");
duke@0 1145 }
duke@0 1146 }