1 /* 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/systemDictionary.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "code/compiledIC.hpp" 29 #include "code/icBuffer.hpp" 30 #include "code/nmethod.hpp" 31 #include "code/pcDesc.hpp" 32 #include "code/scopeDesc.hpp" 33 #include "code/vtableStubs.hpp" 34 #include "compiler/compileBroker.hpp" 35 #include "compiler/compilerOracle.hpp" 36 #include "compiler/oopMap.hpp" 37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 38 #include "gc_implementation/g1/heapRegion.hpp" 39 #include "gc_interface/collectedHeap.hpp" 40 #include "interpreter/bytecode.hpp" 41 #include "interpreter/interpreter.hpp" 42 #include "interpreter/linkResolver.hpp" 43 #include "memory/barrierSet.hpp" 44 #include "memory/gcLocker.inline.hpp" 45 #include "memory/oopFactory.hpp" 46 #include "oops/objArrayKlass.hpp" 47 #include "oops/oop.inline.hpp" 48 #include "opto/addnode.hpp" 49 #include "opto/callnode.hpp" 50 #include "opto/cfgnode.hpp" 51 #include "opto/connode.hpp" 52 #include "opto/graphKit.hpp" 53 #include "opto/machnode.hpp" 54 #include "opto/matcher.hpp" 55 #include "opto/memnode.hpp" 56 #include "opto/mulnode.hpp" 57 #include "opto/runtime.hpp" 58 #include "opto/subnode.hpp" 59 #include "runtime/fprofiler.hpp" 60 #include "runtime/handles.inline.hpp" 61 #include "runtime/interfaceSupport.hpp" 62 #include "runtime/javaCalls.hpp" 63 #include "runtime/sharedRuntime.hpp" 64 #include "runtime/signature.hpp" 65 #include "runtime/threadCritical.hpp" 66 #include "runtime/vframe.hpp" 67 #include "runtime/vframeArray.hpp" 68 #include "runtime/vframe_hp.hpp" 69 #include "utilities/copy.hpp" 70 #include "utilities/preserveException.hpp" 71 #ifdef TARGET_ARCH_MODEL_x86_32 72 # include "adfiles/ad_x86_32.hpp" 73 #endif 74 #ifdef TARGET_ARCH_MODEL_x86_64 75 # include "adfiles/ad_x86_64.hpp" 76 #endif 77 #ifdef TARGET_ARCH_MODEL_sparc 78 # include "adfiles/ad_sparc.hpp" 79 #endif 80 #ifdef TARGET_ARCH_MODEL_zero 81 # include "adfiles/ad_zero.hpp" 82 #endif 83 84 85 // For debugging purposes: 86 // To force FullGCALot inside a runtime function, add the following two lines 87 // 88 // Universe::release_fullgc_alot_dummy(); 89 // MarkSweep::invoke(0, "Debugging"); 90 // 91 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 92 93 94 95 96 // Compiled code entry points 97 address OptoRuntime::_new_instance_Java = NULL; 98 address OptoRuntime::_new_array_Java = NULL; 99 address OptoRuntime::_multianewarray2_Java = NULL; 100 address OptoRuntime::_multianewarray3_Java = NULL; 101 address OptoRuntime::_multianewarray4_Java = NULL; 102 address OptoRuntime::_multianewarray5_Java = NULL; 103 address OptoRuntime::_g1_wb_pre_Java = NULL; 104 address OptoRuntime::_g1_wb_post_Java = NULL; 105 address OptoRuntime::_vtable_must_compile_Java = NULL; 106 address OptoRuntime::_complete_monitor_locking_Java = NULL; 107 address OptoRuntime::_rethrow_Java = NULL; 108 109 address OptoRuntime::_slow_arraycopy_Java = NULL; 110 address OptoRuntime::_register_finalizer_Java = NULL; 111 112 # ifdef ENABLE_ZAP_DEAD_LOCALS 113 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 114 address OptoRuntime::_zap_dead_native_locals_Java = NULL; 115 # endif 116 117 118 // This should be called in an assertion at the start of OptoRuntime routines 119 // which are entered from compiled code (all of them) 120 #ifndef PRODUCT 121 static bool check_compiled_frame(JavaThread* thread) { 122 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 123 #ifdef ASSERT 124 RegisterMap map(thread, false); 125 frame caller = thread->last_frame().sender(&map); 126 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 127 #endif /* ASSERT */ 128 return true; 129 } 130 #endif 131 132 133 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 134 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc) 135 136 void OptoRuntime::generate(ciEnv* env) { 137 138 generate_exception_blob(); 139 140 // Note: tls: Means fetching the return oop out of the thread-local storage 141 // 142 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 143 // ------------------------------------------------------------------------------------------------------------------------------- 144 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 145 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 146 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 147 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 148 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 149 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 150 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 151 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 152 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false); 153 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 154 155 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 156 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 157 158 # ifdef ENABLE_ZAP_DEAD_LOCALS 159 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 160 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 161 # endif 162 163 } 164 165 #undef gen 166 167 168 // Helper method to do generation of RunTimeStub's 169 address OptoRuntime::generate_stub( ciEnv* env, 170 TypeFunc_generator gen, address C_function, 171 const char *name, int is_fancy_jump, 172 bool pass_tls, 173 bool save_argument_registers, 174 bool return_pc ) { 175 ResourceMark rm; 176 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 177 return C.stub_entry_point(); 178 } 179 180 const char* OptoRuntime::stub_name(address entry) { 181 #ifndef PRODUCT 182 CodeBlob* cb = CodeCache::find_blob(entry); 183 RuntimeStub* rs =(RuntimeStub *)cb; 184 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 185 return rs->name(); 186 #else 187 // Fast implementation for product mode (maybe it should be inlined too) 188 return "runtime stub"; 189 #endif 190 } 191 192 193 //============================================================================= 194 // Opto compiler runtime routines 195 //============================================================================= 196 197 198 //=============================allocation====================================== 199 // We failed the fast-path allocation. Now we need to do a scavenge or GC 200 // and try allocation again. 201 202 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { 203 // After any safepoint, just before going back to compiled code, 204 // we inform the GC that we will be doing initializing writes to 205 // this object in the future without emitting card-marks, so 206 // GC may take any compensating steps. 207 // NOTE: Keep this code consistent with GraphKit::store_barrier. 208 209 oop new_obj = thread->vm_result(); 210 if (new_obj == NULL) return; 211 212 assert(Universe::heap()->can_elide_tlab_store_barriers(), 213 "compiler must check this first"); 214 // GC may decide to give back a safer copy of new_obj. 215 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 216 thread->set_vm_result(new_obj); 217 } 218 219 // object allocation 220 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread)) 221 JRT_BLOCK; 222 #ifndef PRODUCT 223 SharedRuntime::_new_instance_ctr++; // new instance requires GC 224 #endif 225 assert(check_compiled_frame(thread), "incorrect caller"); 226 227 // These checks are cheap to make and support reflective allocation. 228 int lh = Klass::cast(klass)->layout_helper(); 229 if (Klass::layout_helper_needs_slow_path(lh) 230 || !instanceKlass::cast(klass)->is_initialized()) { 231 KlassHandle kh(THREAD, klass); 232 kh->check_valid_for_instantiation(false, THREAD); 233 if (!HAS_PENDING_EXCEPTION) { 234 instanceKlass::cast(kh())->initialize(THREAD); 235 } 236 if (!HAS_PENDING_EXCEPTION) { 237 klass = kh(); 238 } else { 239 klass = NULL; 240 } 241 } 242 243 if (klass != NULL) { 244 // Scavenge and allocate an instance. 245 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD); 246 thread->set_vm_result(result); 247 248 // Pass oops back through thread local storage. Our apparent type to Java 249 // is that we return an oop, but we can block on exit from this routine and 250 // a GC can trash the oop in C's return register. The generated stub will 251 // fetch the oop from TLS after any possible GC. 252 } 253 254 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 255 JRT_BLOCK_END; 256 257 if (GraphKit::use_ReduceInitialCardMarks()) { 258 // inform GC that we won't do card marks for initializing writes. 259 new_store_pre_barrier(thread); 260 } 261 JRT_END 262 263 264 // array allocation 265 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread)) 266 JRT_BLOCK; 267 #ifndef PRODUCT 268 SharedRuntime::_new_array_ctr++; // new array requires GC 269 #endif 270 assert(check_compiled_frame(thread), "incorrect caller"); 271 272 // Scavenge and allocate an instance. 273 oop result; 274 275 if (Klass::cast(array_type)->oop_is_typeArray()) { 276 // The oopFactory likes to work with the element type. 277 // (We could bypass the oopFactory, since it doesn't add much value.) 278 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); 279 result = oopFactory::new_typeArray(elem_type, len, THREAD); 280 } else { 281 // Although the oopFactory likes to work with the elem_type, 282 // the compiler prefers the array_type, since it must already have 283 // that latter value in hand for the fast path. 284 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass(); 285 result = oopFactory::new_objArray(elem_type, len, THREAD); 286 } 287 288 // Pass oops back through thread local storage. Our apparent type to Java 289 // is that we return an oop, but we can block on exit from this routine and 290 // a GC can trash the oop in C's return register. The generated stub will 291 // fetch the oop from TLS after any possible GC. 292 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 293 thread->set_vm_result(result); 294 JRT_BLOCK_END; 295 296 if (GraphKit::use_ReduceInitialCardMarks()) { 297 // inform GC that we won't do card marks for initializing writes. 298 new_store_pre_barrier(thread); 299 } 300 JRT_END 301 302 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 303 304 // multianewarray for 2 dimensions 305 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread)) 306 #ifndef PRODUCT 307 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 308 #endif 309 assert(check_compiled_frame(thread), "incorrect caller"); 310 assert(oop(elem_type)->is_klass(), "not a class"); 311 jint dims[2]; 312 dims[0] = len1; 313 dims[1] = len2; 314 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 315 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 316 thread->set_vm_result(obj); 317 JRT_END 318 319 // multianewarray for 3 dimensions 320 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread)) 321 #ifndef PRODUCT 322 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 323 #endif 324 assert(check_compiled_frame(thread), "incorrect caller"); 325 assert(oop(elem_type)->is_klass(), "not a class"); 326 jint dims[3]; 327 dims[0] = len1; 328 dims[1] = len2; 329 dims[2] = len3; 330 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 331 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 332 thread->set_vm_result(obj); 333 JRT_END 334 335 // multianewarray for 4 dimensions 336 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 337 #ifndef PRODUCT 338 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 339 #endif 340 assert(check_compiled_frame(thread), "incorrect caller"); 341 assert(oop(elem_type)->is_klass(), "not a class"); 342 jint dims[4]; 343 dims[0] = len1; 344 dims[1] = len2; 345 dims[2] = len3; 346 dims[3] = len4; 347 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 348 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 349 thread->set_vm_result(obj); 350 JRT_END 351 352 // multianewarray for 5 dimensions 353 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 354 #ifndef PRODUCT 355 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 356 #endif 357 assert(check_compiled_frame(thread), "incorrect caller"); 358 assert(oop(elem_type)->is_klass(), "not a class"); 359 jint dims[5]; 360 dims[0] = len1; 361 dims[1] = len2; 362 dims[2] = len3; 363 dims[3] = len4; 364 dims[4] = len5; 365 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 366 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 367 thread->set_vm_result(obj); 368 JRT_END 369 370 const TypeFunc *OptoRuntime::new_instance_Type() { 371 // create input type (domain) 372 const Type **fields = TypeTuple::fields(1); 373 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 374 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 375 376 // create result type (range) 377 fields = TypeTuple::fields(1); 378 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 379 380 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 381 382 return TypeFunc::make(domain, range); 383 } 384 385 386 const TypeFunc *OptoRuntime::athrow_Type() { 387 // create input type (domain) 388 const Type **fields = TypeTuple::fields(1); 389 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 390 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 391 392 // create result type (range) 393 fields = TypeTuple::fields(0); 394 395 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 396 397 return TypeFunc::make(domain, range); 398 } 399 400 401 const TypeFunc *OptoRuntime::new_array_Type() { 402 // create input type (domain) 403 const Type **fields = TypeTuple::fields(2); 404 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 405 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 406 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 407 408 // create result type (range) 409 fields = TypeTuple::fields(1); 410 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 411 412 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 413 414 return TypeFunc::make(domain, range); 415 } 416 417 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 418 // create input type (domain) 419 const int nargs = ndim + 1; 420 const Type **fields = TypeTuple::fields(nargs); 421 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 422 for( int i = 1; i < nargs; i++ ) 423 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 424 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 425 426 // create result type (range) 427 fields = TypeTuple::fields(1); 428 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 429 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 430 431 return TypeFunc::make(domain, range); 432 } 433 434 const TypeFunc *OptoRuntime::multianewarray2_Type() { 435 return multianewarray_Type(2); 436 } 437 438 const TypeFunc *OptoRuntime::multianewarray3_Type() { 439 return multianewarray_Type(3); 440 } 441 442 const TypeFunc *OptoRuntime::multianewarray4_Type() { 443 return multianewarray_Type(4); 444 } 445 446 const TypeFunc *OptoRuntime::multianewarray5_Type() { 447 return multianewarray_Type(5); 448 } 449 450 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 451 const Type **fields = TypeTuple::fields(2); 452 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 453 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 454 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 455 456 // create result type (range) 457 fields = TypeTuple::fields(0); 458 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 459 460 return TypeFunc::make(domain, range); 461 } 462 463 const TypeFunc *OptoRuntime::g1_wb_post_Type() { 464 465 const Type **fields = TypeTuple::fields(2); 466 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 467 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 468 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 469 470 // create result type (range) 471 fields = TypeTuple::fields(0); 472 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 473 474 return TypeFunc::make(domain, range); 475 } 476 477 const TypeFunc *OptoRuntime::uncommon_trap_Type() { 478 // create input type (domain) 479 const Type **fields = TypeTuple::fields(1); 480 // symbolOop name of class to be loaded 481 fields[TypeFunc::Parms+0] = TypeInt::INT; 482 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 483 484 // create result type (range) 485 fields = TypeTuple::fields(0); 486 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 487 488 return TypeFunc::make(domain, range); 489 } 490 491 # ifdef ENABLE_ZAP_DEAD_LOCALS 492 // Type used for stub generation for zap_dead_locals. 493 // No inputs or outputs 494 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 495 // create input type (domain) 496 const Type **fields = TypeTuple::fields(0); 497 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 498 499 // create result type (range) 500 fields = TypeTuple::fields(0); 501 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 502 503 return TypeFunc::make(domain,range); 504 } 505 # endif 506 507 508 //----------------------------------------------------------------------------- 509 // Monitor Handling 510 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 511 // create input type (domain) 512 const Type **fields = TypeTuple::fields(2); 513 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 514 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 515 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 516 517 // create result type (range) 518 fields = TypeTuple::fields(0); 519 520 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 521 522 return TypeFunc::make(domain,range); 523 } 524 525 526 //----------------------------------------------------------------------------- 527 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 528 // create input type (domain) 529 const Type **fields = TypeTuple::fields(2); 530 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 531 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 532 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 533 534 // create result type (range) 535 fields = TypeTuple::fields(0); 536 537 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 538 539 return TypeFunc::make(domain,range); 540 } 541 542 const TypeFunc* OptoRuntime::flush_windows_Type() { 543 // create input type (domain) 544 const Type** fields = TypeTuple::fields(1); 545 fields[TypeFunc::Parms+0] = NULL; // void 546 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 547 548 // create result type 549 fields = TypeTuple::fields(1); 550 fields[TypeFunc::Parms+0] = NULL; // void 551 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 552 553 return TypeFunc::make(domain, range); 554 } 555 556 const TypeFunc* OptoRuntime::l2f_Type() { 557 // create input type (domain) 558 const Type **fields = TypeTuple::fields(2); 559 fields[TypeFunc::Parms+0] = TypeLong::LONG; 560 fields[TypeFunc::Parms+1] = Type::HALF; 561 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 562 563 // create result type (range) 564 fields = TypeTuple::fields(1); 565 fields[TypeFunc::Parms+0] = Type::FLOAT; 566 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 567 568 return TypeFunc::make(domain, range); 569 } 570 571 const TypeFunc* OptoRuntime::modf_Type() { 572 const Type **fields = TypeTuple::fields(2); 573 fields[TypeFunc::Parms+0] = Type::FLOAT; 574 fields[TypeFunc::Parms+1] = Type::FLOAT; 575 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 576 577 // create result type (range) 578 fields = TypeTuple::fields(1); 579 fields[TypeFunc::Parms+0] = Type::FLOAT; 580 581 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 582 583 return TypeFunc::make(domain, range); 584 } 585 586 const TypeFunc *OptoRuntime::Math_D_D_Type() { 587 // create input type (domain) 588 const Type **fields = TypeTuple::fields(2); 589 // symbolOop name of class to be loaded 590 fields[TypeFunc::Parms+0] = Type::DOUBLE; 591 fields[TypeFunc::Parms+1] = Type::HALF; 592 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 593 594 // create result type (range) 595 fields = TypeTuple::fields(2); 596 fields[TypeFunc::Parms+0] = Type::DOUBLE; 597 fields[TypeFunc::Parms+1] = Type::HALF; 598 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 599 600 return TypeFunc::make(domain, range); 601 } 602 603 const TypeFunc* OptoRuntime::Math_DD_D_Type() { 604 const Type **fields = TypeTuple::fields(4); 605 fields[TypeFunc::Parms+0] = Type::DOUBLE; 606 fields[TypeFunc::Parms+1] = Type::HALF; 607 fields[TypeFunc::Parms+2] = Type::DOUBLE; 608 fields[TypeFunc::Parms+3] = Type::HALF; 609 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 610 611 // create result type (range) 612 fields = TypeTuple::fields(2); 613 fields[TypeFunc::Parms+0] = Type::DOUBLE; 614 fields[TypeFunc::Parms+1] = Type::HALF; 615 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 616 617 return TypeFunc::make(domain, range); 618 } 619 620 //-------------- currentTimeMillis 621 622 const TypeFunc* OptoRuntime::current_time_millis_Type() { 623 // create input type (domain) 624 const Type **fields = TypeTuple::fields(0); 625 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 626 627 // create result type (range) 628 fields = TypeTuple::fields(2); 629 fields[TypeFunc::Parms+0] = TypeLong::LONG; 630 fields[TypeFunc::Parms+1] = Type::HALF; 631 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 632 633 return TypeFunc::make(domain, range); 634 } 635 636 // arraycopy stub variations: 637 enum ArrayCopyType { 638 ac_fast, // void(ptr, ptr, size_t) 639 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 640 ac_slow, // void(ptr, int, ptr, int, int) 641 ac_generic // int(ptr, int, ptr, int, int) 642 }; 643 644 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 645 // create input type (domain) 646 int num_args = (act == ac_fast ? 3 : 5); 647 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 648 int argcnt = num_args; 649 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 650 const Type** fields = TypeTuple::fields(argcnt); 651 int argp = TypeFunc::Parms; 652 fields[argp++] = TypePtr::NOTNULL; // src 653 if (num_size_args == 0) { 654 fields[argp++] = TypeInt::INT; // src_pos 655 } 656 fields[argp++] = TypePtr::NOTNULL; // dest 657 if (num_size_args == 0) { 658 fields[argp++] = TypeInt::INT; // dest_pos 659 fields[argp++] = TypeInt::INT; // length 660 } 661 while (num_size_args-- > 0) { 662 fields[argp++] = TypeX_X; // size in whatevers (size_t) 663 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 664 } 665 if (act == ac_checkcast) { 666 fields[argp++] = TypePtr::NOTNULL; // super_klass 667 } 668 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 669 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 670 671 // create result type if needed 672 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 673 fields = TypeTuple::fields(1); 674 if (retcnt == 0) 675 fields[TypeFunc::Parms+0] = NULL; // void 676 else 677 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 678 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 679 return TypeFunc::make(domain, range); 680 } 681 682 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 683 // This signature is simple: Two base pointers and a size_t. 684 return make_arraycopy_Type(ac_fast); 685 } 686 687 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 688 // An extension of fast_arraycopy_Type which adds type checking. 689 return make_arraycopy_Type(ac_checkcast); 690 } 691 692 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 693 // This signature is exactly the same as System.arraycopy. 694 // There are no intptr_t (int/long) arguments. 695 return make_arraycopy_Type(ac_slow); 696 } 697 698 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 699 // This signature is like System.arraycopy, except that it returns status. 700 return make_arraycopy_Type(ac_generic); 701 } 702 703 704 const TypeFunc* OptoRuntime::array_fill_Type() { 705 // create input type (domain): pointer, int, size_t 706 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 707 int argp = TypeFunc::Parms; 708 fields[argp++] = TypePtr::NOTNULL; 709 fields[argp++] = TypeInt::INT; 710 fields[argp++] = TypeX_X; // size in whatevers (size_t) 711 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 712 const TypeTuple *domain = TypeTuple::make(argp, fields); 713 714 // create result type 715 fields = TypeTuple::fields(1); 716 fields[TypeFunc::Parms+0] = NULL; // void 717 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 718 719 return TypeFunc::make(domain, range); 720 } 721 722 //------------- Interpreter state access for on stack replacement 723 const TypeFunc* OptoRuntime::osr_end_Type() { 724 // create input type (domain) 725 const Type **fields = TypeTuple::fields(1); 726 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 727 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 728 729 // create result type 730 fields = TypeTuple::fields(1); 731 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 732 fields[TypeFunc::Parms+0] = NULL; // void 733 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 734 return TypeFunc::make(domain, range); 735 } 736 737 //-------------- methodData update helpers 738 739 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 740 // create input type (domain) 741 const Type **fields = TypeTuple::fields(2); 742 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 743 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 744 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 745 746 // create result type 747 fields = TypeTuple::fields(1); 748 fields[TypeFunc::Parms+0] = NULL; // void 749 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 750 return TypeFunc::make(domain,range); 751 } 752 753 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 754 if (receiver == NULL) return; 755 klassOop receiver_klass = receiver->klass(); 756 757 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 758 int empty_row = -1; // free row, if any is encountered 759 760 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 761 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 762 // if (vc->receiver(row) == receiver_klass) 763 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 764 intptr_t row_recv = *(mdp + receiver_off); 765 if (row_recv == (intptr_t) receiver_klass) { 766 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 767 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 768 *(mdp + count_off) += DataLayout::counter_increment; 769 return; 770 } else if (row_recv == 0) { 771 // else if (vc->receiver(row) == NULL) 772 empty_row = (int) row; 773 } 774 } 775 776 if (empty_row != -1) { 777 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 778 // vc->set_receiver(empty_row, receiver_klass); 779 *(mdp + receiver_off) = (intptr_t) receiver_klass; 780 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 781 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 782 *(mdp + count_off) = DataLayout::counter_increment; 783 } else { 784 // Receiver did not match any saved receiver and there is no empty row for it. 785 // Increment total counter to indicate polymorphic case. 786 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 787 *count_p += DataLayout::counter_increment; 788 } 789 JRT_END 790 791 //----------------------------------------------------------------------------- 792 // implicit exception support. 793 794 static void report_null_exception_in_code_cache(address exception_pc) { 795 ResourceMark rm; 796 CodeBlob* n = CodeCache::find_blob(exception_pc); 797 if (n != NULL) { 798 tty->print_cr("#"); 799 tty->print_cr("# HotSpot Runtime Error, null exception in generated code"); 800 tty->print_cr("#"); 801 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc); 802 803 if (n->is_nmethod()) { 804 methodOop method = ((nmethod*)n)->method(); 805 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string()); 806 tty->print_cr("#"); 807 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) { 808 const char* title = "HotSpot Runtime Error"; 809 const char* question = "Do you want to exclude compilation of this method in future runs?"; 810 if (os::message_box(title, question)) { 811 CompilerOracle::append_comment_to_file(""); 812 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude"); 813 CompilerOracle::append_comment_to_file(""); 814 CompilerOracle::append_exclude_to_file(method); 815 tty->print_cr("#"); 816 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile); 817 tty->print_cr("#"); 818 } 819 } 820 fatal("Implicit null exception happened in compiled method"); 821 } else { 822 n->print(); 823 fatal("Implicit null exception happened in generated stub"); 824 } 825 } 826 fatal("Implicit null exception at wrong place"); 827 } 828 829 830 //------------------------------------------------------------------------------------- 831 // register policy 832 833 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 834 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 835 switch (register_save_policy[reg]) { 836 case 'C': return false; //SOC 837 case 'E': return true ; //SOE 838 case 'N': return false; //NS 839 case 'A': return false; //AS 840 } 841 ShouldNotReachHere(); 842 return false; 843 } 844 845 //----------------------------------------------------------------------- 846 // Exceptions 847 // 848 849 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 850 851 // The method is an entry that is always called by a C++ method not 852 // directly from compiled code. Compiled code will call the C++ method following. 853 // We can't allow async exception to be installed during exception processing. 854 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 855 856 // Do not confuse exception_oop with pending_exception. The exception_oop 857 // is only used to pass arguments into the method. Not for general 858 // exception handling. DO NOT CHANGE IT to use pending_exception, since 859 // the runtime stubs checks this on exit. 860 assert(thread->exception_oop() != NULL, "exception oop is found"); 861 address handler_address = NULL; 862 863 Handle exception(thread, thread->exception_oop()); 864 865 if (TraceExceptions) { 866 trace_exception(exception(), thread->exception_pc(), ""); 867 } 868 // for AbortVMOnException flag 869 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 870 871 #ifdef ASSERT 872 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 873 // should throw an exception here 874 ShouldNotReachHere(); 875 } 876 #endif 877 878 879 // new exception handling: this method is entered only from adapters 880 // exceptions from compiled java methods are handled in compiled code 881 // using rethrow node 882 883 address pc = thread->exception_pc(); 884 nm = CodeCache::find_nmethod(pc); 885 assert(nm != NULL, "No NMethod found"); 886 if (nm->is_native_method()) { 887 fatal("Native mathod should not have path to exception handling"); 888 } else { 889 // we are switching to old paradigm: search for exception handler in caller_frame 890 // instead in exception handler of caller_frame.sender() 891 892 if (JvmtiExport::can_post_on_exceptions()) { 893 // "Full-speed catching" is not necessary here, 894 // since we're notifying the VM on every catch. 895 // Force deoptimization and the rest of the lookup 896 // will be fine. 897 deoptimize_caller_frame(thread, true); 898 } 899 900 // Check the stack guard pages. If enabled, look for handler in this frame; 901 // otherwise, forcibly unwind the frame. 902 // 903 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 904 bool force_unwind = !thread->reguard_stack(); 905 bool deopting = false; 906 if (nm->is_deopt_pc(pc)) { 907 deopting = true; 908 RegisterMap map(thread, false); 909 frame deoptee = thread->last_frame().sender(&map); 910 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 911 // Adjust the pc back to the original throwing pc 912 pc = deoptee.pc(); 913 } 914 915 // If we are forcing an unwind because of stack overflow then deopt is 916 // irrelevant sice we are throwing the frame away anyway. 917 918 if (deopting && !force_unwind) { 919 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 920 } else { 921 922 handler_address = 923 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 924 925 if (handler_address == NULL) { 926 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 927 assert (handler_address != NULL, "must have compiled handler"); 928 // Update the exception cache only when the unwind was not forced. 929 if (!force_unwind) { 930 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 931 } 932 } else { 933 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 934 } 935 } 936 937 thread->set_exception_pc(pc); 938 thread->set_exception_handler_pc(handler_address); 939 thread->set_exception_stack_size(0); 940 941 // Check if the exception PC is a MethodHandle call site. 942 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 943 } 944 945 // Restore correct return pc. Was saved above. 946 thread->set_exception_oop(exception()); 947 return handler_address; 948 949 JRT_END 950 951 // We are entering here from exception_blob 952 // If there is a compiled exception handler in this method, we will continue there; 953 // otherwise we will unwind the stack and continue at the caller of top frame method 954 // Note we enter without the usual JRT wrapper. We will call a helper routine that 955 // will do the normal VM entry. We do it this way so that we can see if the nmethod 956 // we looked up the handler for has been deoptimized in the meantime. If it has been 957 // we must not use the handler and instread return the deopt blob. 958 address OptoRuntime::handle_exception_C(JavaThread* thread) { 959 // 960 // We are in Java not VM and in debug mode we have a NoHandleMark 961 // 962 #ifndef PRODUCT 963 SharedRuntime::_find_handler_ctr++; // find exception handler 964 #endif 965 debug_only(NoHandleMark __hm;) 966 nmethod* nm = NULL; 967 address handler_address = NULL; 968 { 969 // Enter the VM 970 971 ResetNoHandleMark rnhm; 972 handler_address = handle_exception_C_helper(thread, nm); 973 } 974 975 // Back in java: Use no oops, DON'T safepoint 976 977 // Now check to see if the handler we are returning is in a now 978 // deoptimized frame 979 980 if (nm != NULL) { 981 RegisterMap map(thread, false); 982 frame caller = thread->last_frame().sender(&map); 983 #ifdef ASSERT 984 assert(caller.is_compiled_frame(), "must be"); 985 #endif // ASSERT 986 if (caller.is_deoptimized_frame()) { 987 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 988 } 989 } 990 return handler_address; 991 } 992 993 //------------------------------rethrow---------------------------------------- 994 // We get here after compiled code has executed a 'RethrowNode'. The callee 995 // is either throwing or rethrowing an exception. The callee-save registers 996 // have been restored, synchronized objects have been unlocked and the callee 997 // stack frame has been removed. The return address was passed in. 998 // Exception oop is passed as the 1st argument. This routine is then called 999 // from the stub. On exit, we know where to jump in the caller's code. 1000 // After this C code exits, the stub will pop his frame and end in a jump 1001 // (instead of a return). We enter the caller's default handler. 1002 // 1003 // This must be JRT_LEAF: 1004 // - caller will not change its state as we cannot block on exit, 1005 // therefore raw_exception_handler_for_return_address is all it takes 1006 // to handle deoptimized blobs 1007 // 1008 // However, there needs to be a safepoint check in the middle! So compiled 1009 // safepoints are completely watertight. 1010 // 1011 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1012 // 1013 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1014 // 1015 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1016 #ifndef PRODUCT 1017 SharedRuntime::_rethrow_ctr++; // count rethrows 1018 #endif 1019 assert (exception != NULL, "should have thrown a NULLPointerException"); 1020 #ifdef ASSERT 1021 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1022 // should throw an exception here 1023 ShouldNotReachHere(); 1024 } 1025 #endif 1026 1027 thread->set_vm_result(exception); 1028 // Frame not compiled (handles deoptimization blob) 1029 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1030 } 1031 1032 1033 const TypeFunc *OptoRuntime::rethrow_Type() { 1034 // create input type (domain) 1035 const Type **fields = TypeTuple::fields(1); 1036 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1037 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1038 1039 // create result type (range) 1040 fields = TypeTuple::fields(1); 1041 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1042 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1043 1044 return TypeFunc::make(domain, range); 1045 } 1046 1047 1048 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1049 // Deoptimize frame 1050 if (doit) { 1051 // Called from within the owner thread, so no need for safepoint 1052 RegisterMap reg_map(thread); 1053 frame stub_frame = thread->last_frame(); 1054 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1055 frame caller_frame = stub_frame.sender(®_map); 1056 1057 // bypass VM_DeoptimizeFrame and deoptimize the frame directly 1058 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1059 } 1060 } 1061 1062 1063 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1064 // create input type (domain) 1065 const Type **fields = TypeTuple::fields(1); 1066 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1067 // // The JavaThread* is passed to each routine as the last argument 1068 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1069 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1070 1071 // create result type (range) 1072 fields = TypeTuple::fields(0); 1073 1074 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1075 1076 return TypeFunc::make(domain,range); 1077 } 1078 1079 1080 //----------------------------------------------------------------------------- 1081 // Dtrace support. entry and exit probes have the same signature 1082 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1083 // create input type (domain) 1084 const Type **fields = TypeTuple::fields(2); 1085 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1086 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering 1087 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1088 1089 // create result type (range) 1090 fields = TypeTuple::fields(0); 1091 1092 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1093 1094 return TypeFunc::make(domain,range); 1095 } 1096 1097 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1098 // create input type (domain) 1099 const Type **fields = TypeTuple::fields(2); 1100 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1101 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1102 1103 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1104 1105 // create result type (range) 1106 fields = TypeTuple::fields(0); 1107 1108 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1109 1110 return TypeFunc::make(domain,range); 1111 } 1112 1113 1114 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1115 assert(obj->is_oop(), "must be a valid oop"); 1116 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); 1117 instanceKlass::register_finalizer(instanceOop(obj), CHECK); 1118 JRT_END 1119 1120 //----------------------------------------------------------------------------- 1121 1122 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1123 1124 // 1125 // dump the collected NamedCounters. 1126 // 1127 void OptoRuntime::print_named_counters() { 1128 int total_lock_count = 0; 1129 int eliminated_lock_count = 0; 1130 1131 NamedCounter* c = _named_counters; 1132 while (c) { 1133 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1134 int count = c->count(); 1135 if (count > 0) { 1136 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1137 if (Verbose) { 1138 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1139 } 1140 total_lock_count += count; 1141 if (eliminated) { 1142 eliminated_lock_count += count; 1143 } 1144 } 1145 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1146 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1147 if (blc->nonzero()) { 1148 tty->print_cr("%s", c->name()); 1149 blc->print_on(tty); 1150 } 1151 } 1152 c = c->next(); 1153 } 1154 if (total_lock_count > 0) { 1155 tty->print_cr("dynamic locks: %d", total_lock_count); 1156 if (eliminated_lock_count) { 1157 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1158 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1159 } 1160 } 1161 } 1162 1163 // 1164 // Allocate a new NamedCounter. The JVMState is used to generate the 1165 // name which consists of method@line for the inlining tree. 1166 // 1167 1168 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1169 int max_depth = youngest_jvms->depth(); 1170 1171 // Visit scopes from youngest to oldest. 1172 bool first = true; 1173 stringStream st; 1174 for (int depth = max_depth; depth >= 1; depth--) { 1175 JVMState* jvms = youngest_jvms->of_depth(depth); 1176 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1177 if (!first) { 1178 st.print(" "); 1179 } else { 1180 first = false; 1181 } 1182 int bci = jvms->bci(); 1183 if (bci < 0) bci = 0; 1184 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1185 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1186 } 1187 NamedCounter* c; 1188 if (tag == NamedCounter::BiasedLockingCounter) { 1189 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1190 } else { 1191 c = new NamedCounter(strdup(st.as_string()), tag); 1192 } 1193 1194 // atomically add the new counter to the head of the list. We only 1195 // add counters so this is safe. 1196 NamedCounter* head; 1197 do { 1198 head = _named_counters; 1199 c->set_next(head); 1200 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1201 return c; 1202 } 1203 1204 //----------------------------------------------------------------------------- 1205 // Non-product code 1206 #ifndef PRODUCT 1207 1208 int trace_exception_counter = 0; 1209 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1210 ttyLocker ttyl; 1211 trace_exception_counter++; 1212 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1213 exception_oop->print_value(); 1214 tty->print(" in "); 1215 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1216 if (blob->is_nmethod()) { 1217 ((nmethod*)blob)->method()->print_value(); 1218 } else if (blob->is_runtime_stub()) { 1219 tty->print("<runtime-stub>"); 1220 } else { 1221 tty->print("<unknown>"); 1222 } 1223 tty->print(" at " INTPTR_FORMAT, exception_pc); 1224 tty->print_cr("]"); 1225 } 1226 1227 #endif // PRODUCT 1228 1229 1230 # ifdef ENABLE_ZAP_DEAD_LOCALS 1231 // Called from call sites in compiled code with oop maps (actually safepoints) 1232 // Zaps dead locals in first java frame. 1233 // Is entry because may need to lock to generate oop maps 1234 // Currently, only used for compiler frames, but someday may be used 1235 // for interpreter frames, too. 1236 1237 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1238 1239 // avoid pointers to member funcs with these helpers 1240 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1241 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1242 1243 1244 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1245 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1246 assert(JavaThread::current() == thread, "is this needed?"); 1247 1248 if ( !ZapDeadCompiledLocals ) return; 1249 1250 bool skip = false; 1251 1252 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1253 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1254 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1255 warning("starting zapping after skipping"); 1256 1257 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1258 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1259 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1260 warning("about to zap last zap"); 1261 1262 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1263 1264 if ( skip ) return; 1265 1266 // find java frame and zap it 1267 1268 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1269 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1270 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1271 return; 1272 } 1273 } 1274 warning("no frame found to zap in zap_dead_Java_locals_C"); 1275 } 1276 1277 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1278 zap_dead_java_or_native_locals(thread, is_java_frame); 1279 JRT_END 1280 1281 // The following does not work because for one thing, the 1282 // thread state is wrong; it expects java, but it is native. 1283 // Also, the invariants in a native stub are different and 1284 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1285 // in there. 1286 // So for now, we do not zap in native stubs. 1287 1288 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1289 zap_dead_java_or_native_locals(thread, is_native_frame); 1290 JRT_END 1291 1292 # endif