runtime.cpp revision 3274:0105f367a14c
1/* 2 * Copyright (c) 1998, 2012, 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#ifdef TARGET_ARCH_MODEL_arm 84# include "adfiles/ad_arm.hpp" 85#endif 86#ifdef TARGET_ARCH_MODEL_ppc 87# include "adfiles/ad_ppc.hpp" 88#endif 89 90 91// For debugging purposes: 92// To force FullGCALot inside a runtime function, add the following two lines 93// 94// Universe::release_fullgc_alot_dummy(); 95// MarkSweep::invoke(0, "Debugging"); 96// 97// At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 98 99 100 101 102// Compiled code entry points 103address OptoRuntime::_new_instance_Java = NULL; 104address OptoRuntime::_new_array_Java = NULL; 105address OptoRuntime::_new_array_nozero_Java = NULL; 106address OptoRuntime::_multianewarray2_Java = NULL; 107address OptoRuntime::_multianewarray3_Java = NULL; 108address OptoRuntime::_multianewarray4_Java = NULL; 109address OptoRuntime::_multianewarray5_Java = NULL; 110address OptoRuntime::_multianewarrayN_Java = NULL; 111address OptoRuntime::_g1_wb_pre_Java = NULL; 112address OptoRuntime::_g1_wb_post_Java = NULL; 113address OptoRuntime::_vtable_must_compile_Java = NULL; 114address OptoRuntime::_complete_monitor_locking_Java = NULL; 115address OptoRuntime::_rethrow_Java = NULL; 116 117address OptoRuntime::_slow_arraycopy_Java = NULL; 118address OptoRuntime::_register_finalizer_Java = NULL; 119 120# ifdef ENABLE_ZAP_DEAD_LOCALS 121address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 122address OptoRuntime::_zap_dead_native_locals_Java = NULL; 123# endif 124 125ExceptionBlob* OptoRuntime::_exception_blob; 126 127// This should be called in an assertion at the start of OptoRuntime routines 128// which are entered from compiled code (all of them) 129#ifndef PRODUCT 130static bool check_compiled_frame(JavaThread* thread) { 131 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 132#ifdef ASSERT 133 RegisterMap map(thread, false); 134 frame caller = thread->last_frame().sender(&map); 135 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 136#endif /* ASSERT */ 137 return true; 138} 139#endif 140 141 142#define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 143 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc) 144 145void OptoRuntime::generate(ciEnv* env) { 146 147 generate_exception_blob(); 148 149 // Note: tls: Means fetching the return oop out of the thread-local storage 150 // 151 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 152 // ------------------------------------------------------------------------------------------------------------------------------- 153 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 154 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 155 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false); 156 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 157 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 158 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 159 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 160 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false); 161 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 162 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 163 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false); 164 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 165 166 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 167 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 168 169# ifdef ENABLE_ZAP_DEAD_LOCALS 170 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 171 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 172# endif 173 174} 175 176#undef gen 177 178 179// Helper method to do generation of RunTimeStub's 180address OptoRuntime::generate_stub( ciEnv* env, 181 TypeFunc_generator gen, address C_function, 182 const char *name, int is_fancy_jump, 183 bool pass_tls, 184 bool save_argument_registers, 185 bool return_pc ) { 186 ResourceMark rm; 187 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 188 return C.stub_entry_point(); 189} 190 191const char* OptoRuntime::stub_name(address entry) { 192#ifndef PRODUCT 193 CodeBlob* cb = CodeCache::find_blob(entry); 194 RuntimeStub* rs =(RuntimeStub *)cb; 195 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 196 return rs->name(); 197#else 198 // Fast implementation for product mode (maybe it should be inlined too) 199 return "runtime stub"; 200#endif 201} 202 203 204//============================================================================= 205// Opto compiler runtime routines 206//============================================================================= 207 208 209//=============================allocation====================================== 210// We failed the fast-path allocation. Now we need to do a scavenge or GC 211// and try allocation again. 212 213void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { 214 // After any safepoint, just before going back to compiled code, 215 // we inform the GC that we will be doing initializing writes to 216 // this object in the future without emitting card-marks, so 217 // GC may take any compensating steps. 218 // NOTE: Keep this code consistent with GraphKit::store_barrier. 219 220 oop new_obj = thread->vm_result(); 221 if (new_obj == NULL) return; 222 223 assert(Universe::heap()->can_elide_tlab_store_barriers(), 224 "compiler must check this first"); 225 // GC may decide to give back a safer copy of new_obj. 226 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 227 thread->set_vm_result(new_obj); 228} 229 230// object allocation 231JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread)) 232 JRT_BLOCK; 233#ifndef PRODUCT 234 SharedRuntime::_new_instance_ctr++; // new instance requires GC 235#endif 236 assert(check_compiled_frame(thread), "incorrect caller"); 237 238 // These checks are cheap to make and support reflective allocation. 239 int lh = Klass::cast(klass)->layout_helper(); 240 if (Klass::layout_helper_needs_slow_path(lh) 241 || !instanceKlass::cast(klass)->is_initialized()) { 242 KlassHandle kh(THREAD, klass); 243 kh->check_valid_for_instantiation(false, THREAD); 244 if (!HAS_PENDING_EXCEPTION) { 245 instanceKlass::cast(kh())->initialize(THREAD); 246 } 247 if (!HAS_PENDING_EXCEPTION) { 248 klass = kh(); 249 } else { 250 klass = NULL; 251 } 252 } 253 254 if (klass != NULL) { 255 // Scavenge and allocate an instance. 256 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD); 257 thread->set_vm_result(result); 258 259 // Pass oops back through thread local storage. Our apparent type to Java 260 // is that we return an oop, but we can block on exit from this routine and 261 // a GC can trash the oop in C's return register. The generated stub will 262 // fetch the oop from TLS after any possible GC. 263 } 264 265 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 266 JRT_BLOCK_END; 267 268 if (GraphKit::use_ReduceInitialCardMarks()) { 269 // inform GC that we won't do card marks for initializing writes. 270 new_store_pre_barrier(thread); 271 } 272JRT_END 273 274 275// array allocation 276JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread)) 277 JRT_BLOCK; 278#ifndef PRODUCT 279 SharedRuntime::_new_array_ctr++; // new array requires GC 280#endif 281 assert(check_compiled_frame(thread), "incorrect caller"); 282 283 // Scavenge and allocate an instance. 284 oop result; 285 286 if (Klass::cast(array_type)->oop_is_typeArray()) { 287 // The oopFactory likes to work with the element type. 288 // (We could bypass the oopFactory, since it doesn't add much value.) 289 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); 290 result = oopFactory::new_typeArray(elem_type, len, THREAD); 291 } else { 292 // Although the oopFactory likes to work with the elem_type, 293 // the compiler prefers the array_type, since it must already have 294 // that latter value in hand for the fast path. 295 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass(); 296 result = oopFactory::new_objArray(elem_type, len, THREAD); 297 } 298 299 // Pass oops back through thread local storage. Our apparent type to Java 300 // is that we return an oop, but we can block on exit from this routine and 301 // a GC can trash the oop in C's return register. The generated stub will 302 // fetch the oop from TLS after any possible GC. 303 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 304 thread->set_vm_result(result); 305 JRT_BLOCK_END; 306 307 if (GraphKit::use_ReduceInitialCardMarks()) { 308 // inform GC that we won't do card marks for initializing writes. 309 new_store_pre_barrier(thread); 310 } 311JRT_END 312 313// array allocation without zeroing 314JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(klassOopDesc* array_type, int len, JavaThread *thread)) 315 JRT_BLOCK; 316#ifndef PRODUCT 317 SharedRuntime::_new_array_ctr++; // new array requires GC 318#endif 319 assert(check_compiled_frame(thread), "incorrect caller"); 320 321 // Scavenge and allocate an instance. 322 oop result; 323 324 assert(Klass::cast(array_type)->oop_is_typeArray(), "should be called only for type array"); 325 // The oopFactory likes to work with the element type. 326 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); 327 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD); 328 329 // Pass oops back through thread local storage. Our apparent type to Java 330 // is that we return an oop, but we can block on exit from this routine and 331 // a GC can trash the oop in C's return register. The generated stub will 332 // fetch the oop from TLS after any possible GC. 333 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 334 thread->set_vm_result(result); 335 JRT_BLOCK_END; 336 337 if (GraphKit::use_ReduceInitialCardMarks()) { 338 // inform GC that we won't do card marks for initializing writes. 339 new_store_pre_barrier(thread); 340 } 341 342 oop result = thread->vm_result(); 343 if ((len > 0) && (result != NULL) && 344 is_deoptimized_caller_frame(thread)) { 345 // Zero array here if the caller is deoptimized. 346 int size = ((typeArrayOop)result)->object_size(); 347 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); 348 const size_t hs = arrayOopDesc::header_size(elem_type); 349 // Align to next 8 bytes to avoid trashing arrays's length. 350 const size_t aligned_hs = align_object_offset(hs); 351 HeapWord* obj = (HeapWord*)result; 352 if (aligned_hs > hs) { 353 Copy::zero_to_words(obj+hs, aligned_hs-hs); 354 } 355 // Optimized zeroing. 356 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs); 357 } 358 359JRT_END 360 361// Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 362 363// multianewarray for 2 dimensions 364JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread)) 365#ifndef PRODUCT 366 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 367#endif 368 assert(check_compiled_frame(thread), "incorrect caller"); 369 assert(oop(elem_type)->is_klass(), "not a class"); 370 jint dims[2]; 371 dims[0] = len1; 372 dims[1] = len2; 373 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 374 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 375 thread->set_vm_result(obj); 376JRT_END 377 378// multianewarray for 3 dimensions 379JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread)) 380#ifndef PRODUCT 381 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 382#endif 383 assert(check_compiled_frame(thread), "incorrect caller"); 384 assert(oop(elem_type)->is_klass(), "not a class"); 385 jint dims[3]; 386 dims[0] = len1; 387 dims[1] = len2; 388 dims[2] = len3; 389 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 390 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 391 thread->set_vm_result(obj); 392JRT_END 393 394// multianewarray for 4 dimensions 395JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 396#ifndef PRODUCT 397 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 398#endif 399 assert(check_compiled_frame(thread), "incorrect caller"); 400 assert(oop(elem_type)->is_klass(), "not a class"); 401 jint dims[4]; 402 dims[0] = len1; 403 dims[1] = len2; 404 dims[2] = len3; 405 dims[3] = len4; 406 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 407 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 408 thread->set_vm_result(obj); 409JRT_END 410 411// multianewarray for 5 dimensions 412JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 413#ifndef PRODUCT 414 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 415#endif 416 assert(check_compiled_frame(thread), "incorrect caller"); 417 assert(oop(elem_type)->is_klass(), "not a class"); 418 jint dims[5]; 419 dims[0] = len1; 420 dims[1] = len2; 421 dims[2] = len3; 422 dims[3] = len4; 423 dims[4] = len5; 424 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 425 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 426 thread->set_vm_result(obj); 427JRT_END 428 429JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(klassOopDesc* elem_type, arrayOopDesc* dims, JavaThread *thread)) 430 assert(check_compiled_frame(thread), "incorrect caller"); 431 assert(oop(elem_type)->is_klass(), "not a class"); 432 assert(oop(dims)->is_typeArray(), "not an array"); 433 434 ResourceMark rm; 435 jint len = dims->length(); 436 assert(len > 0, "Dimensions array should contain data"); 437 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); 438 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); 439 Copy::conjoint_jints_atomic(j_dims, c_dims, len); 440 441 oop obj = arrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); 442 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 443 thread->set_vm_result(obj); 444JRT_END 445 446 447const TypeFunc *OptoRuntime::new_instance_Type() { 448 // create input type (domain) 449 const Type **fields = TypeTuple::fields(1); 450 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 451 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 452 453 // create result type (range) 454 fields = TypeTuple::fields(1); 455 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 456 457 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 458 459 return TypeFunc::make(domain, range); 460} 461 462 463const TypeFunc *OptoRuntime::athrow_Type() { 464 // create input type (domain) 465 const Type **fields = TypeTuple::fields(1); 466 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 467 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 468 469 // create result type (range) 470 fields = TypeTuple::fields(0); 471 472 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 473 474 return TypeFunc::make(domain, range); 475} 476 477 478const TypeFunc *OptoRuntime::new_array_Type() { 479 // create input type (domain) 480 const Type **fields = TypeTuple::fields(2); 481 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 482 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 483 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 484 485 // create result type (range) 486 fields = TypeTuple::fields(1); 487 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 488 489 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 490 491 return TypeFunc::make(domain, range); 492} 493 494const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 495 // create input type (domain) 496 const int nargs = ndim + 1; 497 const Type **fields = TypeTuple::fields(nargs); 498 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 499 for( int i = 1; i < nargs; i++ ) 500 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 501 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 502 503 // create result type (range) 504 fields = TypeTuple::fields(1); 505 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 506 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 507 508 return TypeFunc::make(domain, range); 509} 510 511const TypeFunc *OptoRuntime::multianewarray2_Type() { 512 return multianewarray_Type(2); 513} 514 515const TypeFunc *OptoRuntime::multianewarray3_Type() { 516 return multianewarray_Type(3); 517} 518 519const TypeFunc *OptoRuntime::multianewarray4_Type() { 520 return multianewarray_Type(4); 521} 522 523const TypeFunc *OptoRuntime::multianewarray5_Type() { 524 return multianewarray_Type(5); 525} 526 527const TypeFunc *OptoRuntime::multianewarrayN_Type() { 528 // create input type (domain) 529 const Type **fields = TypeTuple::fields(2); 530 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 531 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes 532 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 533 534 // create result type (range) 535 fields = TypeTuple::fields(1); 536 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 537 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 538 539 return TypeFunc::make(domain, range); 540} 541 542const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 543 const Type **fields = TypeTuple::fields(2); 544 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 545 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 546 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 547 548 // create result type (range) 549 fields = TypeTuple::fields(0); 550 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 551 552 return TypeFunc::make(domain, range); 553} 554 555const TypeFunc *OptoRuntime::g1_wb_post_Type() { 556 557 const Type **fields = TypeTuple::fields(2); 558 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 559 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 560 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 561 562 // create result type (range) 563 fields = TypeTuple::fields(0); 564 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 565 566 return TypeFunc::make(domain, range); 567} 568 569const TypeFunc *OptoRuntime::uncommon_trap_Type() { 570 // create input type (domain) 571 const Type **fields = TypeTuple::fields(1); 572 // Symbol* name of class to be loaded 573 fields[TypeFunc::Parms+0] = TypeInt::INT; 574 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 575 576 // create result type (range) 577 fields = TypeTuple::fields(0); 578 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 579 580 return TypeFunc::make(domain, range); 581} 582 583# ifdef ENABLE_ZAP_DEAD_LOCALS 584// Type used for stub generation for zap_dead_locals. 585// No inputs or outputs 586const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 587 // create input type (domain) 588 const Type **fields = TypeTuple::fields(0); 589 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 590 591 // create result type (range) 592 fields = TypeTuple::fields(0); 593 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 594 595 return TypeFunc::make(domain,range); 596} 597# endif 598 599 600//----------------------------------------------------------------------------- 601// Monitor Handling 602const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 603 // create input type (domain) 604 const Type **fields = TypeTuple::fields(2); 605 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 606 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 607 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 608 609 // create result type (range) 610 fields = TypeTuple::fields(0); 611 612 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 613 614 return TypeFunc::make(domain,range); 615} 616 617 618//----------------------------------------------------------------------------- 619const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 620 // create input type (domain) 621 const Type **fields = TypeTuple::fields(2); 622 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 623 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 624 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 625 626 // create result type (range) 627 fields = TypeTuple::fields(0); 628 629 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 630 631 return TypeFunc::make(domain,range); 632} 633 634const TypeFunc* OptoRuntime::flush_windows_Type() { 635 // create input type (domain) 636 const Type** fields = TypeTuple::fields(1); 637 fields[TypeFunc::Parms+0] = NULL; // void 638 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 639 640 // create result type 641 fields = TypeTuple::fields(1); 642 fields[TypeFunc::Parms+0] = NULL; // void 643 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 644 645 return TypeFunc::make(domain, range); 646} 647 648const TypeFunc* OptoRuntime::l2f_Type() { 649 // create input type (domain) 650 const Type **fields = TypeTuple::fields(2); 651 fields[TypeFunc::Parms+0] = TypeLong::LONG; 652 fields[TypeFunc::Parms+1] = Type::HALF; 653 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 654 655 // create result type (range) 656 fields = TypeTuple::fields(1); 657 fields[TypeFunc::Parms+0] = Type::FLOAT; 658 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 659 660 return TypeFunc::make(domain, range); 661} 662 663const TypeFunc* OptoRuntime::modf_Type() { 664 const Type **fields = TypeTuple::fields(2); 665 fields[TypeFunc::Parms+0] = Type::FLOAT; 666 fields[TypeFunc::Parms+1] = Type::FLOAT; 667 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 668 669 // create result type (range) 670 fields = TypeTuple::fields(1); 671 fields[TypeFunc::Parms+0] = Type::FLOAT; 672 673 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 674 675 return TypeFunc::make(domain, range); 676} 677 678const TypeFunc *OptoRuntime::Math_D_D_Type() { 679 // create input type (domain) 680 const Type **fields = TypeTuple::fields(2); 681 // Symbol* name of class to be loaded 682 fields[TypeFunc::Parms+0] = Type::DOUBLE; 683 fields[TypeFunc::Parms+1] = Type::HALF; 684 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 685 686 // create result type (range) 687 fields = TypeTuple::fields(2); 688 fields[TypeFunc::Parms+0] = Type::DOUBLE; 689 fields[TypeFunc::Parms+1] = Type::HALF; 690 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 691 692 return TypeFunc::make(domain, range); 693} 694 695const TypeFunc* OptoRuntime::Math_DD_D_Type() { 696 const Type **fields = TypeTuple::fields(4); 697 fields[TypeFunc::Parms+0] = Type::DOUBLE; 698 fields[TypeFunc::Parms+1] = Type::HALF; 699 fields[TypeFunc::Parms+2] = Type::DOUBLE; 700 fields[TypeFunc::Parms+3] = Type::HALF; 701 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 702 703 // create result type (range) 704 fields = TypeTuple::fields(2); 705 fields[TypeFunc::Parms+0] = Type::DOUBLE; 706 fields[TypeFunc::Parms+1] = Type::HALF; 707 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 708 709 return TypeFunc::make(domain, range); 710} 711 712//-------------- currentTimeMillis, currentTimeNanos, etc 713 714const TypeFunc* OptoRuntime::void_long_Type() { 715 // create input type (domain) 716 const Type **fields = TypeTuple::fields(0); 717 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 718 719 // create result type (range) 720 fields = TypeTuple::fields(2); 721 fields[TypeFunc::Parms+0] = TypeLong::LONG; 722 fields[TypeFunc::Parms+1] = Type::HALF; 723 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 724 725 return TypeFunc::make(domain, range); 726} 727 728// arraycopy stub variations: 729enum ArrayCopyType { 730 ac_fast, // void(ptr, ptr, size_t) 731 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 732 ac_slow, // void(ptr, int, ptr, int, int) 733 ac_generic // int(ptr, int, ptr, int, int) 734}; 735 736static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 737 // create input type (domain) 738 int num_args = (act == ac_fast ? 3 : 5); 739 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 740 int argcnt = num_args; 741 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 742 const Type** fields = TypeTuple::fields(argcnt); 743 int argp = TypeFunc::Parms; 744 fields[argp++] = TypePtr::NOTNULL; // src 745 if (num_size_args == 0) { 746 fields[argp++] = TypeInt::INT; // src_pos 747 } 748 fields[argp++] = TypePtr::NOTNULL; // dest 749 if (num_size_args == 0) { 750 fields[argp++] = TypeInt::INT; // dest_pos 751 fields[argp++] = TypeInt::INT; // length 752 } 753 while (num_size_args-- > 0) { 754 fields[argp++] = TypeX_X; // size in whatevers (size_t) 755 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 756 } 757 if (act == ac_checkcast) { 758 fields[argp++] = TypePtr::NOTNULL; // super_klass 759 } 760 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 761 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 762 763 // create result type if needed 764 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 765 fields = TypeTuple::fields(1); 766 if (retcnt == 0) 767 fields[TypeFunc::Parms+0] = NULL; // void 768 else 769 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 770 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 771 return TypeFunc::make(domain, range); 772} 773 774const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 775 // This signature is simple: Two base pointers and a size_t. 776 return make_arraycopy_Type(ac_fast); 777} 778 779const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 780 // An extension of fast_arraycopy_Type which adds type checking. 781 return make_arraycopy_Type(ac_checkcast); 782} 783 784const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 785 // This signature is exactly the same as System.arraycopy. 786 // There are no intptr_t (int/long) arguments. 787 return make_arraycopy_Type(ac_slow); 788} 789 790const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 791 // This signature is like System.arraycopy, except that it returns status. 792 return make_arraycopy_Type(ac_generic); 793} 794 795 796const TypeFunc* OptoRuntime::array_fill_Type() { 797 // create input type (domain): pointer, int, size_t 798 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 799 int argp = TypeFunc::Parms; 800 fields[argp++] = TypePtr::NOTNULL; 801 fields[argp++] = TypeInt::INT; 802 fields[argp++] = TypeX_X; // size in whatevers (size_t) 803 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 804 const TypeTuple *domain = TypeTuple::make(argp, fields); 805 806 // create result type 807 fields = TypeTuple::fields(1); 808 fields[TypeFunc::Parms+0] = NULL; // void 809 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 810 811 return TypeFunc::make(domain, range); 812} 813 814//------------- Interpreter state access for on stack replacement 815const TypeFunc* OptoRuntime::osr_end_Type() { 816 // create input type (domain) 817 const Type **fields = TypeTuple::fields(1); 818 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 819 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 820 821 // create result type 822 fields = TypeTuple::fields(1); 823 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 824 fields[TypeFunc::Parms+0] = NULL; // void 825 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 826 return TypeFunc::make(domain, range); 827} 828 829//-------------- methodData update helpers 830 831const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 832 // create input type (domain) 833 const Type **fields = TypeTuple::fields(2); 834 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 835 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 836 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 837 838 // create result type 839 fields = TypeTuple::fields(1); 840 fields[TypeFunc::Parms+0] = NULL; // void 841 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 842 return TypeFunc::make(domain,range); 843} 844 845JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 846 if (receiver == NULL) return; 847 klassOop receiver_klass = receiver->klass(); 848 849 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 850 int empty_row = -1; // free row, if any is encountered 851 852 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 853 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 854 // if (vc->receiver(row) == receiver_klass) 855 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 856 intptr_t row_recv = *(mdp + receiver_off); 857 if (row_recv == (intptr_t) receiver_klass) { 858 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 859 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 860 *(mdp + count_off) += DataLayout::counter_increment; 861 return; 862 } else if (row_recv == 0) { 863 // else if (vc->receiver(row) == NULL) 864 empty_row = (int) row; 865 } 866 } 867 868 if (empty_row != -1) { 869 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 870 // vc->set_receiver(empty_row, receiver_klass); 871 *(mdp + receiver_off) = (intptr_t) receiver_klass; 872 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 873 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 874 *(mdp + count_off) = DataLayout::counter_increment; 875 } else { 876 // Receiver did not match any saved receiver and there is no empty row for it. 877 // Increment total counter to indicate polymorphic case. 878 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 879 *count_p += DataLayout::counter_increment; 880 } 881JRT_END 882 883//----------------------------------------------------------------------------- 884// implicit exception support. 885 886static void report_null_exception_in_code_cache(address exception_pc) { 887 ResourceMark rm; 888 CodeBlob* n = CodeCache::find_blob(exception_pc); 889 if (n != NULL) { 890 tty->print_cr("#"); 891 tty->print_cr("# HotSpot Runtime Error, null exception in generated code"); 892 tty->print_cr("#"); 893 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc); 894 895 if (n->is_nmethod()) { 896 methodOop method = ((nmethod*)n)->method(); 897 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string()); 898 tty->print_cr("#"); 899 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) { 900 const char* title = "HotSpot Runtime Error"; 901 const char* question = "Do you want to exclude compilation of this method in future runs?"; 902 if (os::message_box(title, question)) { 903 CompilerOracle::append_comment_to_file(""); 904 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude"); 905 CompilerOracle::append_comment_to_file(""); 906 CompilerOracle::append_exclude_to_file(method); 907 tty->print_cr("#"); 908 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile); 909 tty->print_cr("#"); 910 } 911 } 912 fatal("Implicit null exception happened in compiled method"); 913 } else { 914 n->print(); 915 fatal("Implicit null exception happened in generated stub"); 916 } 917 } 918 fatal("Implicit null exception at wrong place"); 919} 920 921 922//------------------------------------------------------------------------------------- 923// register policy 924 925bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 926 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 927 switch (register_save_policy[reg]) { 928 case 'C': return false; //SOC 929 case 'E': return true ; //SOE 930 case 'N': return false; //NS 931 case 'A': return false; //AS 932 } 933 ShouldNotReachHere(); 934 return false; 935} 936 937//----------------------------------------------------------------------- 938// Exceptions 939// 940 941static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 942 943// The method is an entry that is always called by a C++ method not 944// directly from compiled code. Compiled code will call the C++ method following. 945// We can't allow async exception to be installed during exception processing. 946JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 947 948 // Do not confuse exception_oop with pending_exception. The exception_oop 949 // is only used to pass arguments into the method. Not for general 950 // exception handling. DO NOT CHANGE IT to use pending_exception, since 951 // the runtime stubs checks this on exit. 952 assert(thread->exception_oop() != NULL, "exception oop is found"); 953 address handler_address = NULL; 954 955 Handle exception(thread, thread->exception_oop()); 956 957 if (TraceExceptions) { 958 trace_exception(exception(), thread->exception_pc(), ""); 959 } 960 // for AbortVMOnException flag 961 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 962 963 #ifdef ASSERT 964 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 965 // should throw an exception here 966 ShouldNotReachHere(); 967 } 968 #endif 969 970 971 // new exception handling: this method is entered only from adapters 972 // exceptions from compiled java methods are handled in compiled code 973 // using rethrow node 974 975 address pc = thread->exception_pc(); 976 nm = CodeCache::find_nmethod(pc); 977 assert(nm != NULL, "No NMethod found"); 978 if (nm->is_native_method()) { 979 fatal("Native mathod should not have path to exception handling"); 980 } else { 981 // we are switching to old paradigm: search for exception handler in caller_frame 982 // instead in exception handler of caller_frame.sender() 983 984 if (JvmtiExport::can_post_on_exceptions()) { 985 // "Full-speed catching" is not necessary here, 986 // since we're notifying the VM on every catch. 987 // Force deoptimization and the rest of the lookup 988 // will be fine. 989 deoptimize_caller_frame(thread, true); 990 } 991 992 // Check the stack guard pages. If enabled, look for handler in this frame; 993 // otherwise, forcibly unwind the frame. 994 // 995 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 996 bool force_unwind = !thread->reguard_stack(); 997 bool deopting = false; 998 if (nm->is_deopt_pc(pc)) { 999 deopting = true; 1000 RegisterMap map(thread, false); 1001 frame deoptee = thread->last_frame().sender(&map); 1002 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1003 // Adjust the pc back to the original throwing pc 1004 pc = deoptee.pc(); 1005 } 1006 1007 // If we are forcing an unwind because of stack overflow then deopt is 1008 // irrelevant sice we are throwing the frame away anyway. 1009 1010 if (deopting && !force_unwind) { 1011 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1012 } else { 1013 1014 handler_address = 1015 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1016 1017 if (handler_address == NULL) { 1018 Handle original_exception(thread, exception()); 1019 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1020 assert (handler_address != NULL, "must have compiled handler"); 1021 // Update the exception cache only when the unwind was not forced 1022 // and there didn't happen another exception during the computation of the 1023 // compiled exception handler. 1024 if (!force_unwind && original_exception() == exception()) { 1025 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1026 } 1027 } else { 1028 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1029 } 1030 } 1031 1032 thread->set_exception_pc(pc); 1033 thread->set_exception_handler_pc(handler_address); 1034 1035 // Check if the exception PC is a MethodHandle call site. 1036 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1037 } 1038 1039 // Restore correct return pc. Was saved above. 1040 thread->set_exception_oop(exception()); 1041 return handler_address; 1042 1043JRT_END 1044 1045// We are entering here from exception_blob 1046// If there is a compiled exception handler in this method, we will continue there; 1047// otherwise we will unwind the stack and continue at the caller of top frame method 1048// Note we enter without the usual JRT wrapper. We will call a helper routine that 1049// will do the normal VM entry. We do it this way so that we can see if the nmethod 1050// we looked up the handler for has been deoptimized in the meantime. If it has been 1051// we must not use the handler and instread return the deopt blob. 1052address OptoRuntime::handle_exception_C(JavaThread* thread) { 1053// 1054// We are in Java not VM and in debug mode we have a NoHandleMark 1055// 1056#ifndef PRODUCT 1057 SharedRuntime::_find_handler_ctr++; // find exception handler 1058#endif 1059 debug_only(NoHandleMark __hm;) 1060 nmethod* nm = NULL; 1061 address handler_address = NULL; 1062 { 1063 // Enter the VM 1064 1065 ResetNoHandleMark rnhm; 1066 handler_address = handle_exception_C_helper(thread, nm); 1067 } 1068 1069 // Back in java: Use no oops, DON'T safepoint 1070 1071 // Now check to see if the handler we are returning is in a now 1072 // deoptimized frame 1073 1074 if (nm != NULL) { 1075 RegisterMap map(thread, false); 1076 frame caller = thread->last_frame().sender(&map); 1077#ifdef ASSERT 1078 assert(caller.is_compiled_frame(), "must be"); 1079#endif // ASSERT 1080 if (caller.is_deoptimized_frame()) { 1081 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1082 } 1083 } 1084 return handler_address; 1085} 1086 1087//------------------------------rethrow---------------------------------------- 1088// We get here after compiled code has executed a 'RethrowNode'. The callee 1089// is either throwing or rethrowing an exception. The callee-save registers 1090// have been restored, synchronized objects have been unlocked and the callee 1091// stack frame has been removed. The return address was passed in. 1092// Exception oop is passed as the 1st argument. This routine is then called 1093// from the stub. On exit, we know where to jump in the caller's code. 1094// After this C code exits, the stub will pop his frame and end in a jump 1095// (instead of a return). We enter the caller's default handler. 1096// 1097// This must be JRT_LEAF: 1098// - caller will not change its state as we cannot block on exit, 1099// therefore raw_exception_handler_for_return_address is all it takes 1100// to handle deoptimized blobs 1101// 1102// However, there needs to be a safepoint check in the middle! So compiled 1103// safepoints are completely watertight. 1104// 1105// Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1106// 1107// *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1108// 1109address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1110#ifndef PRODUCT 1111 SharedRuntime::_rethrow_ctr++; // count rethrows 1112#endif 1113 assert (exception != NULL, "should have thrown a NULLPointerException"); 1114#ifdef ASSERT 1115 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1116 // should throw an exception here 1117 ShouldNotReachHere(); 1118 } 1119#endif 1120 1121 thread->set_vm_result(exception); 1122 // Frame not compiled (handles deoptimization blob) 1123 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1124} 1125 1126 1127const TypeFunc *OptoRuntime::rethrow_Type() { 1128 // create input type (domain) 1129 const Type **fields = TypeTuple::fields(1); 1130 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1131 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1132 1133 // create result type (range) 1134 fields = TypeTuple::fields(1); 1135 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1136 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1137 1138 return TypeFunc::make(domain, range); 1139} 1140 1141 1142void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1143 // Deoptimize frame 1144 if (doit) { 1145 // Called from within the owner thread, so no need for safepoint 1146 RegisterMap reg_map(thread); 1147 frame stub_frame = thread->last_frame(); 1148 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1149 frame caller_frame = stub_frame.sender(®_map); 1150 1151 // Deoptimize the caller frame. 1152 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1153 } 1154} 1155 1156 1157bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1158 // Called from within the owner thread, so no need for safepoint 1159 RegisterMap reg_map(thread); 1160 frame stub_frame = thread->last_frame(); 1161 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1162 frame caller_frame = stub_frame.sender(®_map); 1163 return caller_frame.is_deoptimized_frame(); 1164} 1165 1166 1167const TypeFunc *OptoRuntime::register_finalizer_Type() { 1168 // create input type (domain) 1169 const Type **fields = TypeTuple::fields(1); 1170 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1171 // // The JavaThread* is passed to each routine as the last argument 1172 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1173 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1174 1175 // create result type (range) 1176 fields = TypeTuple::fields(0); 1177 1178 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1179 1180 return TypeFunc::make(domain,range); 1181} 1182 1183 1184//----------------------------------------------------------------------------- 1185// Dtrace support. entry and exit probes have the same signature 1186const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1187 // create input type (domain) 1188 const Type **fields = TypeTuple::fields(2); 1189 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1190 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering 1191 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1192 1193 // create result type (range) 1194 fields = TypeTuple::fields(0); 1195 1196 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1197 1198 return TypeFunc::make(domain,range); 1199} 1200 1201const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1202 // create input type (domain) 1203 const Type **fields = TypeTuple::fields(2); 1204 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1205 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1206 1207 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1208 1209 // create result type (range) 1210 fields = TypeTuple::fields(0); 1211 1212 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1213 1214 return TypeFunc::make(domain,range); 1215} 1216 1217 1218JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1219 assert(obj->is_oop(), "must be a valid oop"); 1220 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); 1221 instanceKlass::register_finalizer(instanceOop(obj), CHECK); 1222JRT_END 1223 1224//----------------------------------------------------------------------------- 1225 1226NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1227 1228// 1229// dump the collected NamedCounters. 1230// 1231void OptoRuntime::print_named_counters() { 1232 int total_lock_count = 0; 1233 int eliminated_lock_count = 0; 1234 1235 NamedCounter* c = _named_counters; 1236 while (c) { 1237 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1238 int count = c->count(); 1239 if (count > 0) { 1240 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1241 if (Verbose) { 1242 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1243 } 1244 total_lock_count += count; 1245 if (eliminated) { 1246 eliminated_lock_count += count; 1247 } 1248 } 1249 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1250 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1251 if (blc->nonzero()) { 1252 tty->print_cr("%s", c->name()); 1253 blc->print_on(tty); 1254 } 1255 } 1256 c = c->next(); 1257 } 1258 if (total_lock_count > 0) { 1259 tty->print_cr("dynamic locks: %d", total_lock_count); 1260 if (eliminated_lock_count) { 1261 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1262 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1263 } 1264 } 1265} 1266 1267// 1268// Allocate a new NamedCounter. The JVMState is used to generate the 1269// name which consists of method@line for the inlining tree. 1270// 1271 1272NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1273 int max_depth = youngest_jvms->depth(); 1274 1275 // Visit scopes from youngest to oldest. 1276 bool first = true; 1277 stringStream st; 1278 for (int depth = max_depth; depth >= 1; depth--) { 1279 JVMState* jvms = youngest_jvms->of_depth(depth); 1280 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1281 if (!first) { 1282 st.print(" "); 1283 } else { 1284 first = false; 1285 } 1286 int bci = jvms->bci(); 1287 if (bci < 0) bci = 0; 1288 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1289 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1290 } 1291 NamedCounter* c; 1292 if (tag == NamedCounter::BiasedLockingCounter) { 1293 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1294 } else { 1295 c = new NamedCounter(strdup(st.as_string()), tag); 1296 } 1297 1298 // atomically add the new counter to the head of the list. We only 1299 // add counters so this is safe. 1300 NamedCounter* head; 1301 do { 1302 head = _named_counters; 1303 c->set_next(head); 1304 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1305 return c; 1306} 1307 1308//----------------------------------------------------------------------------- 1309// Non-product code 1310#ifndef PRODUCT 1311 1312int trace_exception_counter = 0; 1313static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1314 ttyLocker ttyl; 1315 trace_exception_counter++; 1316 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1317 exception_oop->print_value(); 1318 tty->print(" in "); 1319 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1320 if (blob->is_nmethod()) { 1321 ((nmethod*)blob)->method()->print_value(); 1322 } else if (blob->is_runtime_stub()) { 1323 tty->print("<runtime-stub>"); 1324 } else { 1325 tty->print("<unknown>"); 1326 } 1327 tty->print(" at " INTPTR_FORMAT, exception_pc); 1328 tty->print_cr("]"); 1329} 1330 1331#endif // PRODUCT 1332 1333 1334# ifdef ENABLE_ZAP_DEAD_LOCALS 1335// Called from call sites in compiled code with oop maps (actually safepoints) 1336// Zaps dead locals in first java frame. 1337// Is entry because may need to lock to generate oop maps 1338// Currently, only used for compiler frames, but someday may be used 1339// for interpreter frames, too. 1340 1341int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1342 1343// avoid pointers to member funcs with these helpers 1344static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1345static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1346 1347 1348void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1349 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1350 assert(JavaThread::current() == thread, "is this needed?"); 1351 1352 if ( !ZapDeadCompiledLocals ) return; 1353 1354 bool skip = false; 1355 1356 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1357 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1358 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1359 warning("starting zapping after skipping"); 1360 1361 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1362 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1363 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1364 warning("about to zap last zap"); 1365 1366 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1367 1368 if ( skip ) return; 1369 1370 // find java frame and zap it 1371 1372 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1373 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1374 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1375 return; 1376 } 1377 } 1378 warning("no frame found to zap in zap_dead_Java_locals_C"); 1379} 1380 1381JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1382 zap_dead_java_or_native_locals(thread, is_java_frame); 1383JRT_END 1384 1385// The following does not work because for one thing, the 1386// thread state is wrong; it expects java, but it is native. 1387// Also, the invariants in a native stub are different and 1388// I'm not sure it is safe to have a MachCalRuntimeDirectNode 1389// in there. 1390// So for now, we do not zap in native stubs. 1391 1392JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1393 zap_dead_java_or_native_locals(thread, is_native_frame); 1394JRT_END 1395 1396# endif 1397