1 /* 2 * Copyright 1998-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 #include "incls/_precompiled.incl" 26 #include "incls/_runtime.cpp.incl" 27 28 29 // For debugging purposes: 30 // To force FullGCALot inside a runtime function, add the following two lines 31 // 32 // Universe::release_fullgc_alot_dummy(); 33 // MarkSweep::invoke(0, "Debugging"); 34 // 35 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 36 37 38 39 40 // Compiled code entry points 41 address OptoRuntime::_new_instance_Java = NULL; 42 address OptoRuntime::_new_array_Java = NULL; 43 address OptoRuntime::_multianewarray2_Java = NULL; 44 address OptoRuntime::_multianewarray3_Java = NULL; 45 address OptoRuntime::_multianewarray4_Java = NULL; 46 address OptoRuntime::_multianewarray5_Java = NULL; 47 address OptoRuntime::_g1_wb_pre_Java = NULL; 48 address OptoRuntime::_g1_wb_post_Java = NULL; 49 address OptoRuntime::_vtable_must_compile_Java = NULL; 50 address OptoRuntime::_complete_monitor_locking_Java = NULL; 51 address OptoRuntime::_rethrow_Java = NULL; 52 53 address OptoRuntime::_slow_arraycopy_Java = NULL; 54 address OptoRuntime::_register_finalizer_Java = NULL; 55 56 # ifdef ENABLE_ZAP_DEAD_LOCALS 57 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 58 address OptoRuntime::_zap_dead_native_locals_Java = NULL; 59 # endif 60 61 62 // This should be called in an assertion at the start of OptoRuntime routines 63 // which are entered from compiled code (all of them) 64 #ifndef PRODUCT 65 static bool check_compiled_frame(JavaThread* thread) { 66 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 67 #ifdef ASSERT 68 RegisterMap map(thread, false); 69 frame caller = thread->last_frame().sender(&map); 70 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 71 #endif /* ASSERT */ 72 return true; 73 } 74 #endif 75 76 77 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 78 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc) 79 80 void OptoRuntime::generate(ciEnv* env) { 81 82 generate_exception_blob(); 83 84 // Note: tls: Means fetching the return oop out of the thread-local storage 85 // 86 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 87 // ------------------------------------------------------------------------------------------------------------------------------- 88 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 89 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 90 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 91 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 92 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 93 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 94 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 95 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 96 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false); 97 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 98 99 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 100 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 101 102 # ifdef ENABLE_ZAP_DEAD_LOCALS 103 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 104 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 105 # endif 106 107 } 108 109 #undef gen 110 111 112 // Helper method to do generation of RunTimeStub's 113 address OptoRuntime::generate_stub( ciEnv* env, 114 TypeFunc_generator gen, address C_function, 115 const char *name, int is_fancy_jump, 116 bool pass_tls, 117 bool save_argument_registers, 118 bool return_pc ) { 119 ResourceMark rm; 120 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 121 return C.stub_entry_point(); 122 } 123 124 const char* OptoRuntime::stub_name(address entry) { 125 #ifndef PRODUCT 126 CodeBlob* cb = CodeCache::find_blob(entry); 127 RuntimeStub* rs =(RuntimeStub *)cb; 128 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 129 return rs->name(); 130 #else 131 // Fast implementation for product mode (maybe it should be inlined too) 132 return "runtime stub"; 133 #endif 134 } 135 136 137 //============================================================================= 138 // Opto compiler runtime routines 139 //============================================================================= 140 141 142 //=============================allocation====================================== 143 // We failed the fast-path allocation. Now we need to do a scavenge or GC 144 // and try allocation again. 145 146 void OptoRuntime::do_eager_card_mark(JavaThread* thread) { 147 // After any safepoint, just before going back to compiled code, 148 // we perform a card mark. This lets the compiled code omit 149 // card marks for initialization of new objects. 150 // Keep this code consistent with GraphKit::store_barrier. 151 152 oop new_obj = thread->vm_result(); 153 if (new_obj == NULL) return; 154 155 assert(Universe::heap()->can_elide_tlab_store_barriers(), 156 "compiler must check this first"); 157 new_obj = Universe::heap()->new_store_barrier(new_obj); 158 thread->set_vm_result(new_obj); 159 } 160 161 // object allocation 162 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread)) 163 JRT_BLOCK; 164 #ifndef PRODUCT 165 SharedRuntime::_new_instance_ctr++; // new instance requires GC 166 #endif 167 assert(check_compiled_frame(thread), "incorrect caller"); 168 169 // These checks are cheap to make and support reflective allocation. 170 int lh = Klass::cast(klass)->layout_helper(); 171 if (Klass::layout_helper_needs_slow_path(lh) 172 || !instanceKlass::cast(klass)->is_initialized()) { 173 KlassHandle kh(THREAD, klass); 174 kh->check_valid_for_instantiation(false, THREAD); 175 if (!HAS_PENDING_EXCEPTION) { 176 instanceKlass::cast(kh())->initialize(THREAD); 177 } 178 if (!HAS_PENDING_EXCEPTION) { 179 klass = kh(); 180 } else { 181 klass = NULL; 182 } 183 } 184 185 if (klass != NULL) { 186 // Scavenge and allocate an instance. 187 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD); 188 thread->set_vm_result(result); 189 190 // Pass oops back through thread local storage. Our apparent type to Java 191 // is that we return an oop, but we can block on exit from this routine and 192 // a GC can trash the oop in C's return register. The generated stub will 193 // fetch the oop from TLS after any possible GC. 194 } 195 196 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 197 JRT_BLOCK_END; 198 199 if (GraphKit::use_ReduceInitialCardMarks()) { 200 // do them now so we don't have to do them on the fast path 201 do_eager_card_mark(thread); 202 } 203 JRT_END 204 205 206 // array allocation 207 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread)) 208 JRT_BLOCK; 209 #ifndef PRODUCT 210 SharedRuntime::_new_array_ctr++; // new array requires GC 211 #endif 212 assert(check_compiled_frame(thread), "incorrect caller"); 213 214 // Scavenge and allocate an instance. 215 oop result; 216 217 if (Klass::cast(array_type)->oop_is_typeArray()) { 218 // The oopFactory likes to work with the element type. 219 // (We could bypass the oopFactory, since it doesn't add much value.) 220 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); 221 result = oopFactory::new_typeArray(elem_type, len, THREAD); 222 } else { 223 // Although the oopFactory likes to work with the elem_type, 224 // the compiler prefers the array_type, since it must already have 225 // that latter value in hand for the fast path. 226 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass(); 227 result = oopFactory::new_objArray(elem_type, len, THREAD); 228 } 229 230 // Pass oops back through thread local storage. Our apparent type to Java 231 // is that we return an oop, but we can block on exit from this routine and 232 // a GC can trash the oop in C's return register. The generated stub will 233 // fetch the oop from TLS after any possible GC. 234 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 235 thread->set_vm_result(result); 236 JRT_BLOCK_END; 237 238 if (GraphKit::use_ReduceInitialCardMarks()) { 239 // do them now so we don't have to do them on the fast path 240 do_eager_card_mark(thread); 241 } 242 JRT_END 243 244 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 245 246 // multianewarray for 2 dimensions 247 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread)) 248 #ifndef PRODUCT 249 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 250 #endif 251 assert(check_compiled_frame(thread), "incorrect caller"); 252 assert(oop(elem_type)->is_klass(), "not a class"); 253 jint dims[2]; 254 dims[0] = len1; 255 dims[1] = len2; 256 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 257 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 258 thread->set_vm_result(obj); 259 JRT_END 260 261 // multianewarray for 3 dimensions 262 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread)) 263 #ifndef PRODUCT 264 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 265 #endif 266 assert(check_compiled_frame(thread), "incorrect caller"); 267 assert(oop(elem_type)->is_klass(), "not a class"); 268 jint dims[3]; 269 dims[0] = len1; 270 dims[1] = len2; 271 dims[2] = len3; 272 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 273 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 274 thread->set_vm_result(obj); 275 JRT_END 276 277 // multianewarray for 4 dimensions 278 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 279 #ifndef PRODUCT 280 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 281 #endif 282 assert(check_compiled_frame(thread), "incorrect caller"); 283 assert(oop(elem_type)->is_klass(), "not a class"); 284 jint dims[4]; 285 dims[0] = len1; 286 dims[1] = len2; 287 dims[2] = len3; 288 dims[3] = len4; 289 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 290 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 291 thread->set_vm_result(obj); 292 JRT_END 293 294 // multianewarray for 5 dimensions 295 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 296 #ifndef PRODUCT 297 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 298 #endif 299 assert(check_compiled_frame(thread), "incorrect caller"); 300 assert(oop(elem_type)->is_klass(), "not a class"); 301 jint dims[5]; 302 dims[0] = len1; 303 dims[1] = len2; 304 dims[2] = len3; 305 dims[3] = len4; 306 dims[4] = len5; 307 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 308 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 309 thread->set_vm_result(obj); 310 JRT_END 311 312 const TypeFunc *OptoRuntime::new_instance_Type() { 313 // create input type (domain) 314 const Type **fields = TypeTuple::fields(1); 315 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 316 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 317 318 // create result type (range) 319 fields = TypeTuple::fields(1); 320 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 321 322 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 323 324 return TypeFunc::make(domain, range); 325 } 326 327 328 const TypeFunc *OptoRuntime::athrow_Type() { 329 // create input type (domain) 330 const Type **fields = TypeTuple::fields(1); 331 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 332 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 333 334 // create result type (range) 335 fields = TypeTuple::fields(0); 336 337 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 338 339 return TypeFunc::make(domain, range); 340 } 341 342 343 const TypeFunc *OptoRuntime::new_array_Type() { 344 // create input type (domain) 345 const Type **fields = TypeTuple::fields(2); 346 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 347 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 348 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 349 350 // create result type (range) 351 fields = TypeTuple::fields(1); 352 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 353 354 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 355 356 return TypeFunc::make(domain, range); 357 } 358 359 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 360 // create input type (domain) 361 const int nargs = ndim + 1; 362 const Type **fields = TypeTuple::fields(nargs); 363 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 364 for( int i = 1; i < nargs; i++ ) 365 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 366 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 367 368 // create result type (range) 369 fields = TypeTuple::fields(1); 370 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 371 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 372 373 return TypeFunc::make(domain, range); 374 } 375 376 const TypeFunc *OptoRuntime::multianewarray2_Type() { 377 return multianewarray_Type(2); 378 } 379 380 const TypeFunc *OptoRuntime::multianewarray3_Type() { 381 return multianewarray_Type(3); 382 } 383 384 const TypeFunc *OptoRuntime::multianewarray4_Type() { 385 return multianewarray_Type(4); 386 } 387 388 const TypeFunc *OptoRuntime::multianewarray5_Type() { 389 return multianewarray_Type(5); 390 } 391 392 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 393 const Type **fields = TypeTuple::fields(2); 394 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 395 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 396 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 397 398 // create result type (range) 399 fields = TypeTuple::fields(0); 400 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 401 402 return TypeFunc::make(domain, range); 403 } 404 405 const TypeFunc *OptoRuntime::g1_wb_post_Type() { 406 407 const Type **fields = TypeTuple::fields(2); 408 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 409 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 410 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 411 412 // create result type (range) 413 fields = TypeTuple::fields(0); 414 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 415 416 return TypeFunc::make(domain, range); 417 } 418 419 const TypeFunc *OptoRuntime::uncommon_trap_Type() { 420 // create input type (domain) 421 const Type **fields = TypeTuple::fields(1); 422 // symbolOop name of class to be loaded 423 fields[TypeFunc::Parms+0] = TypeInt::INT; 424 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 425 426 // create result type (range) 427 fields = TypeTuple::fields(0); 428 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 429 430 return TypeFunc::make(domain, range); 431 } 432 433 # ifdef ENABLE_ZAP_DEAD_LOCALS 434 // Type used for stub generation for zap_dead_locals. 435 // No inputs or outputs 436 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 437 // create input type (domain) 438 const Type **fields = TypeTuple::fields(0); 439 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 440 441 // create result type (range) 442 fields = TypeTuple::fields(0); 443 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 444 445 return TypeFunc::make(domain,range); 446 } 447 # endif 448 449 450 //----------------------------------------------------------------------------- 451 // Monitor Handling 452 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 453 // create input type (domain) 454 const Type **fields = TypeTuple::fields(2); 455 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 456 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 457 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 458 459 // create result type (range) 460 fields = TypeTuple::fields(0); 461 462 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 463 464 return TypeFunc::make(domain,range); 465 } 466 467 468 //----------------------------------------------------------------------------- 469 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 470 // create input type (domain) 471 const Type **fields = TypeTuple::fields(2); 472 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 473 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 474 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 475 476 // create result type (range) 477 fields = TypeTuple::fields(0); 478 479 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 480 481 return TypeFunc::make(domain,range); 482 } 483 484 const TypeFunc* OptoRuntime::flush_windows_Type() { 485 // create input type (domain) 486 const Type** fields = TypeTuple::fields(1); 487 fields[TypeFunc::Parms+0] = NULL; // void 488 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 489 490 // create result type 491 fields = TypeTuple::fields(1); 492 fields[TypeFunc::Parms+0] = NULL; // void 493 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 494 495 return TypeFunc::make(domain, range); 496 } 497 498 const TypeFunc* OptoRuntime::l2f_Type() { 499 // create input type (domain) 500 const Type **fields = TypeTuple::fields(2); 501 fields[TypeFunc::Parms+0] = TypeLong::LONG; 502 fields[TypeFunc::Parms+1] = Type::HALF; 503 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 504 505 // create result type (range) 506 fields = TypeTuple::fields(1); 507 fields[TypeFunc::Parms+0] = Type::FLOAT; 508 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 509 510 return TypeFunc::make(domain, range); 511 } 512 513 const TypeFunc* OptoRuntime::modf_Type() { 514 const Type **fields = TypeTuple::fields(2); 515 fields[TypeFunc::Parms+0] = Type::FLOAT; 516 fields[TypeFunc::Parms+1] = Type::FLOAT; 517 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 518 519 // create result type (range) 520 fields = TypeTuple::fields(1); 521 fields[TypeFunc::Parms+0] = Type::FLOAT; 522 523 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 524 525 return TypeFunc::make(domain, range); 526 } 527 528 const TypeFunc *OptoRuntime::Math_D_D_Type() { 529 // create input type (domain) 530 const Type **fields = TypeTuple::fields(2); 531 // symbolOop name of class to be loaded 532 fields[TypeFunc::Parms+0] = Type::DOUBLE; 533 fields[TypeFunc::Parms+1] = Type::HALF; 534 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 535 536 // create result type (range) 537 fields = TypeTuple::fields(2); 538 fields[TypeFunc::Parms+0] = Type::DOUBLE; 539 fields[TypeFunc::Parms+1] = Type::HALF; 540 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 541 542 return TypeFunc::make(domain, range); 543 } 544 545 const TypeFunc* OptoRuntime::Math_DD_D_Type() { 546 const Type **fields = TypeTuple::fields(4); 547 fields[TypeFunc::Parms+0] = Type::DOUBLE; 548 fields[TypeFunc::Parms+1] = Type::HALF; 549 fields[TypeFunc::Parms+2] = Type::DOUBLE; 550 fields[TypeFunc::Parms+3] = Type::HALF; 551 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 552 553 // create result type (range) 554 fields = TypeTuple::fields(2); 555 fields[TypeFunc::Parms+0] = Type::DOUBLE; 556 fields[TypeFunc::Parms+1] = Type::HALF; 557 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 558 559 return TypeFunc::make(domain, range); 560 } 561 562 //-------------- currentTimeMillis 563 564 const TypeFunc* OptoRuntime::current_time_millis_Type() { 565 // create input type (domain) 566 const Type **fields = TypeTuple::fields(0); 567 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 568 569 // create result type (range) 570 fields = TypeTuple::fields(2); 571 fields[TypeFunc::Parms+0] = TypeLong::LONG; 572 fields[TypeFunc::Parms+1] = Type::HALF; 573 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 574 575 return TypeFunc::make(domain, range); 576 } 577 578 // arraycopy stub variations: 579 enum ArrayCopyType { 580 ac_fast, // void(ptr, ptr, size_t) 581 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 582 ac_slow, // void(ptr, int, ptr, int, int) 583 ac_generic // int(ptr, int, ptr, int, int) 584 }; 585 586 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 587 // create input type (domain) 588 int num_args = (act == ac_fast ? 3 : 5); 589 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 590 int argcnt = num_args; 591 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 592 const Type** fields = TypeTuple::fields(argcnt); 593 int argp = TypeFunc::Parms; 594 fields[argp++] = TypePtr::NOTNULL; // src 595 if (num_size_args == 0) { 596 fields[argp++] = TypeInt::INT; // src_pos 597 } 598 fields[argp++] = TypePtr::NOTNULL; // dest 599 if (num_size_args == 0) { 600 fields[argp++] = TypeInt::INT; // dest_pos 601 fields[argp++] = TypeInt::INT; // length 602 } 603 while (num_size_args-- > 0) { 604 fields[argp++] = TypeX_X; // size in whatevers (size_t) 605 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 606 } 607 if (act == ac_checkcast) { 608 fields[argp++] = TypePtr::NOTNULL; // super_klass 609 } 610 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 611 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 612 613 // create result type if needed 614 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 615 fields = TypeTuple::fields(1); 616 if (retcnt == 0) 617 fields[TypeFunc::Parms+0] = NULL; // void 618 else 619 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 620 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 621 return TypeFunc::make(domain, range); 622 } 623 624 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 625 // This signature is simple: Two base pointers and a size_t. 626 return make_arraycopy_Type(ac_fast); 627 } 628 629 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 630 // An extension of fast_arraycopy_Type which adds type checking. 631 return make_arraycopy_Type(ac_checkcast); 632 } 633 634 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 635 // This signature is exactly the same as System.arraycopy. 636 // There are no intptr_t (int/long) arguments. 637 return make_arraycopy_Type(ac_slow); 638 } 639 640 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 641 // This signature is like System.arraycopy, except that it returns status. 642 return make_arraycopy_Type(ac_generic); 643 } 644 645 646 //------------- Interpreter state access for on stack replacement 647 const TypeFunc* OptoRuntime::osr_end_Type() { 648 // create input type (domain) 649 const Type **fields = TypeTuple::fields(1); 650 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 651 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 652 653 // create result type 654 fields = TypeTuple::fields(1); 655 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 656 fields[TypeFunc::Parms+0] = NULL; // void 657 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 658 return TypeFunc::make(domain, range); 659 } 660 661 //-------------- methodData update helpers 662 663 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 664 // create input type (domain) 665 const Type **fields = TypeTuple::fields(2); 666 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 667 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 668 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 669 670 // create result type 671 fields = TypeTuple::fields(1); 672 fields[TypeFunc::Parms+0] = NULL; // void 673 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 674 return TypeFunc::make(domain,range); 675 } 676 677 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 678 if (receiver == NULL) return; 679 klassOop receiver_klass = receiver->klass(); 680 681 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 682 int empty_row = -1; // free row, if any is encountered 683 684 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 685 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 686 // if (vc->receiver(row) == receiver_klass) 687 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 688 intptr_t row_recv = *(mdp + receiver_off); 689 if (row_recv == (intptr_t) receiver_klass) { 690 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 691 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 692 *(mdp + count_off) += DataLayout::counter_increment; 693 return; 694 } else if (row_recv == 0) { 695 // else if (vc->receiver(row) == NULL) 696 empty_row = (int) row; 697 } 698 } 699 700 if (empty_row != -1) { 701 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 702 // vc->set_receiver(empty_row, receiver_klass); 703 *(mdp + receiver_off) = (intptr_t) receiver_klass; 704 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 705 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 706 *(mdp + count_off) = DataLayout::counter_increment; 707 } 708 JRT_END 709 710 //----------------------------------------------------------------------------- 711 // implicit exception support. 712 713 static void report_null_exception_in_code_cache(address exception_pc) { 714 ResourceMark rm; 715 CodeBlob* n = CodeCache::find_blob(exception_pc); 716 if (n != NULL) { 717 tty->print_cr("#"); 718 tty->print_cr("# HotSpot Runtime Error, null exception in generated code"); 719 tty->print_cr("#"); 720 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc); 721 722 if (n->is_nmethod()) { 723 methodOop method = ((nmethod*)n)->method(); 724 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string()); 725 tty->print_cr("#"); 726 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) { 727 const char* title = "HotSpot Runtime Error"; 728 const char* question = "Do you want to exclude compilation of this method in future runs?"; 729 if (os::message_box(title, question)) { 730 CompilerOracle::append_comment_to_file(""); 731 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude"); 732 CompilerOracle::append_comment_to_file(""); 733 CompilerOracle::append_exclude_to_file(method); 734 tty->print_cr("#"); 735 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile); 736 tty->print_cr("#"); 737 } 738 } 739 fatal("Implicit null exception happened in compiled method"); 740 } else { 741 n->print(); 742 fatal("Implicit null exception happened in generated stub"); 743 } 744 } 745 fatal("Implicit null exception at wrong place"); 746 } 747 748 749 //------------------------------------------------------------------------------------- 750 // register policy 751 752 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 753 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 754 switch (register_save_policy[reg]) { 755 case 'C': return false; //SOC 756 case 'E': return true ; //SOE 757 case 'N': return false; //NS 758 case 'A': return false; //AS 759 } 760 ShouldNotReachHere(); 761 return false; 762 } 763 764 //----------------------------------------------------------------------- 765 // Exceptions 766 // 767 768 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 769 770 // The method is an entry that is always called by a C++ method not 771 // directly from compiled code. Compiled code will call the C++ method following. 772 // We can't allow async exception to be installed during exception processing. 773 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 774 775 // Do not confuse exception_oop with pending_exception. The exception_oop 776 // is only used to pass arguments into the method. Not for general 777 // exception handling. DO NOT CHANGE IT to use pending_exception, since 778 // the runtime stubs checks this on exit. 779 assert(thread->exception_oop() != NULL, "exception oop is found"); 780 address handler_address = NULL; 781 782 Handle exception(thread, thread->exception_oop()); 783 784 if (TraceExceptions) { 785 trace_exception(exception(), thread->exception_pc(), ""); 786 } 787 // for AbortVMOnException flag 788 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 789 790 #ifdef ASSERT 791 if (!(exception->is_a(SystemDictionary::throwable_klass()))) { 792 // should throw an exception here 793 ShouldNotReachHere(); 794 } 795 #endif 796 797 798 // new exception handling: this method is entered only from adapters 799 // exceptions from compiled java methods are handled in compiled code 800 // using rethrow node 801 802 address pc = thread->exception_pc(); 803 nm = CodeCache::find_nmethod(pc); 804 assert(nm != NULL, "No NMethod found"); 805 if (nm->is_native_method()) { 806 fatal("Native mathod should not have path to exception handling"); 807 } else { 808 // we are switching to old paradigm: search for exception handler in caller_frame 809 // instead in exception handler of caller_frame.sender() 810 811 if (JvmtiExport::can_post_exceptions()) { 812 // "Full-speed catching" is not necessary here, 813 // since we're notifying the VM on every catch. 814 // Force deoptimization and the rest of the lookup 815 // will be fine. 816 deoptimize_caller_frame(thread, true); 817 } 818 819 // Check the stack guard pages. If enabled, look for handler in this frame; 820 // otherwise, forcibly unwind the frame. 821 // 822 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 823 bool force_unwind = !thread->reguard_stack(); 824 bool deopting = false; 825 if (nm->is_deopt_pc(pc)) { 826 deopting = true; 827 RegisterMap map(thread, false); 828 frame deoptee = thread->last_frame().sender(&map); 829 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 830 // Adjust the pc back to the original throwing pc 831 pc = deoptee.pc(); 832 } 833 834 // If we are forcing an unwind because of stack overflow then deopt is 835 // irrelevant sice we are throwing the frame away anyway. 836 837 if (deopting && !force_unwind) { 838 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 839 } else { 840 841 handler_address = 842 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 843 844 if (handler_address == NULL) { 845 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 846 assert (handler_address != NULL, "must have compiled handler"); 847 // Update the exception cache only when the unwind was not forced. 848 if (!force_unwind) { 849 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 850 } 851 } else { 852 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 853 } 854 } 855 856 thread->set_exception_pc(pc); 857 thread->set_exception_handler_pc(handler_address); 858 thread->set_exception_stack_size(0); 859 } 860 861 // Restore correct return pc. Was saved above. 862 thread->set_exception_oop(exception()); 863 return handler_address; 864 865 JRT_END 866 867 // We are entering here from exception_blob 868 // If there is a compiled exception handler in this method, we will continue there; 869 // otherwise we will unwind the stack and continue at the caller of top frame method 870 // Note we enter without the usual JRT wrapper. We will call a helper routine that 871 // will do the normal VM entry. We do it this way so that we can see if the nmethod 872 // we looked up the handler for has been deoptimized in the meantime. If it has been 873 // we must not use the handler and instread return the deopt blob. 874 address OptoRuntime::handle_exception_C(JavaThread* thread) { 875 // 876 // We are in Java not VM and in debug mode we have a NoHandleMark 877 // 878 #ifndef PRODUCT 879 SharedRuntime::_find_handler_ctr++; // find exception handler 880 #endif 881 debug_only(NoHandleMark __hm;) 882 nmethod* nm = NULL; 883 address handler_address = NULL; 884 { 885 // Enter the VM 886 887 ResetNoHandleMark rnhm; 888 handler_address = handle_exception_C_helper(thread, nm); 889 } 890 891 // Back in java: Use no oops, DON'T safepoint 892 893 // Now check to see if the handler we are returning is in a now 894 // deoptimized frame 895 896 if (nm != NULL) { 897 RegisterMap map(thread, false); 898 frame caller = thread->last_frame().sender(&map); 899 #ifdef ASSERT 900 assert(caller.is_compiled_frame(), "must be"); 901 #endif // ASSERT 902 if (caller.is_deoptimized_frame()) { 903 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 904 } 905 } 906 return handler_address; 907 } 908 909 //------------------------------rethrow---------------------------------------- 910 // We get here after compiled code has executed a 'RethrowNode'. The callee 911 // is either throwing or rethrowing an exception. The callee-save registers 912 // have been restored, synchronized objects have been unlocked and the callee 913 // stack frame has been removed. The return address was passed in. 914 // Exception oop is passed as the 1st argument. This routine is then called 915 // from the stub. On exit, we know where to jump in the caller's code. 916 // After this C code exits, the stub will pop his frame and end in a jump 917 // (instead of a return). We enter the caller's default handler. 918 // 919 // This must be JRT_LEAF: 920 // - caller will not change its state as we cannot block on exit, 921 // therefore raw_exception_handler_for_return_address is all it takes 922 // to handle deoptimized blobs 923 // 924 // However, there needs to be a safepoint check in the middle! So compiled 925 // safepoints are completely watertight. 926 // 927 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 928 // 929 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 930 // 931 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 932 #ifndef PRODUCT 933 SharedRuntime::_rethrow_ctr++; // count rethrows 934 #endif 935 assert (exception != NULL, "should have thrown a NULLPointerException"); 936 #ifdef ASSERT 937 if (!(exception->is_a(SystemDictionary::throwable_klass()))) { 938 // should throw an exception here 939 ShouldNotReachHere(); 940 } 941 #endif 942 943 thread->set_vm_result(exception); 944 // Frame not compiled (handles deoptimization blob) 945 return SharedRuntime::raw_exception_handler_for_return_address(ret_pc); 946 } 947 948 949 const TypeFunc *OptoRuntime::rethrow_Type() { 950 // create input type (domain) 951 const Type **fields = TypeTuple::fields(1); 952 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 953 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 954 955 // create result type (range) 956 fields = TypeTuple::fields(1); 957 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 958 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 959 960 return TypeFunc::make(domain, range); 961 } 962 963 964 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 965 // Deoptimize frame 966 if (doit) { 967 // Called from within the owner thread, so no need for safepoint 968 RegisterMap reg_map(thread); 969 frame stub_frame = thread->last_frame(); 970 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 971 frame caller_frame = stub_frame.sender(®_map); 972 973 VM_DeoptimizeFrame deopt(thread, caller_frame.id()); 974 VMThread::execute(&deopt); 975 } 976 } 977 978 979 const TypeFunc *OptoRuntime::register_finalizer_Type() { 980 // create input type (domain) 981 const Type **fields = TypeTuple::fields(1); 982 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 983 // // The JavaThread* is passed to each routine as the last argument 984 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 985 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 986 987 // create result type (range) 988 fields = TypeTuple::fields(0); 989 990 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 991 992 return TypeFunc::make(domain,range); 993 } 994 995 996 //----------------------------------------------------------------------------- 997 // Dtrace support. entry and exit probes have the same signature 998 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 999 // create input type (domain) 1000 const Type **fields = TypeTuple::fields(2); 1001 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1002 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering 1003 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1004 1005 // create result type (range) 1006 fields = TypeTuple::fields(0); 1007 1008 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1009 1010 return TypeFunc::make(domain,range); 1011 } 1012 1013 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1014 // create input type (domain) 1015 const Type **fields = TypeTuple::fields(2); 1016 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1017 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1018 1019 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1020 1021 // create result type (range) 1022 fields = TypeTuple::fields(0); 1023 1024 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1025 1026 return TypeFunc::make(domain,range); 1027 } 1028 1029 1030 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1031 assert(obj->is_oop(), "must be a valid oop"); 1032 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); 1033 instanceKlass::register_finalizer(instanceOop(obj), CHECK); 1034 JRT_END 1035 1036 //----------------------------------------------------------------------------- 1037 1038 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1039 1040 // 1041 // dump the collected NamedCounters. 1042 // 1043 void OptoRuntime::print_named_counters() { 1044 int total_lock_count = 0; 1045 int eliminated_lock_count = 0; 1046 1047 NamedCounter* c = _named_counters; 1048 while (c) { 1049 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1050 int count = c->count(); 1051 if (count > 0) { 1052 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1053 if (Verbose) { 1054 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1055 } 1056 total_lock_count += count; 1057 if (eliminated) { 1058 eliminated_lock_count += count; 1059 } 1060 } 1061 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1062 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1063 if (blc->nonzero()) { 1064 tty->print_cr("%s", c->name()); 1065 blc->print_on(tty); 1066 } 1067 } 1068 c = c->next(); 1069 } 1070 if (total_lock_count > 0) { 1071 tty->print_cr("dynamic locks: %d", total_lock_count); 1072 if (eliminated_lock_count) { 1073 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1074 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1075 } 1076 } 1077 } 1078 1079 // 1080 // Allocate a new NamedCounter. The JVMState is used to generate the 1081 // name which consists of method@line for the inlining tree. 1082 // 1083 1084 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1085 int max_depth = youngest_jvms->depth(); 1086 1087 // Visit scopes from youngest to oldest. 1088 bool first = true; 1089 stringStream st; 1090 for (int depth = max_depth; depth >= 1; depth--) { 1091 JVMState* jvms = youngest_jvms->of_depth(depth); 1092 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1093 if (!first) { 1094 st.print(" "); 1095 } else { 1096 first = false; 1097 } 1098 int bci = jvms->bci(); 1099 if (bci < 0) bci = 0; 1100 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1101 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1102 } 1103 NamedCounter* c; 1104 if (tag == NamedCounter::BiasedLockingCounter) { 1105 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1106 } else { 1107 c = new NamedCounter(strdup(st.as_string()), tag); 1108 } 1109 1110 // atomically add the new counter to the head of the list. We only 1111 // add counters so this is safe. 1112 NamedCounter* head; 1113 do { 1114 head = _named_counters; 1115 c->set_next(head); 1116 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1117 return c; 1118 } 1119 1120 //----------------------------------------------------------------------------- 1121 // Non-product code 1122 #ifndef PRODUCT 1123 1124 int trace_exception_counter = 0; 1125 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1126 ttyLocker ttyl; 1127 trace_exception_counter++; 1128 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1129 exception_oop->print_value(); 1130 tty->print(" in "); 1131 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1132 if (blob->is_nmethod()) { 1133 ((nmethod*)blob)->method()->print_value(); 1134 } else if (blob->is_runtime_stub()) { 1135 tty->print("<runtime-stub>"); 1136 } else { 1137 tty->print("<unknown>"); 1138 } 1139 tty->print(" at " INTPTR_FORMAT, exception_pc); 1140 tty->print_cr("]"); 1141 } 1142 1143 #endif // PRODUCT 1144 1145 1146 # ifdef ENABLE_ZAP_DEAD_LOCALS 1147 // Called from call sites in compiled code with oop maps (actually safepoints) 1148 // Zaps dead locals in first java frame. 1149 // Is entry because may need to lock to generate oop maps 1150 // Currently, only used for compiler frames, but someday may be used 1151 // for interpreter frames, too. 1152 1153 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1154 1155 // avoid pointers to member funcs with these helpers 1156 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1157 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1158 1159 1160 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1161 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1162 assert(JavaThread::current() == thread, "is this needed?"); 1163 1164 if ( !ZapDeadCompiledLocals ) return; 1165 1166 bool skip = false; 1167 1168 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1169 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1170 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1171 warning("starting zapping after skipping"); 1172 1173 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1174 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1175 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1176 warning("about to zap last zap"); 1177 1178 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1179 1180 if ( skip ) return; 1181 1182 // find java frame and zap it 1183 1184 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1185 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1186 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1187 return; 1188 } 1189 } 1190 warning("no frame found to zap in zap_dead_Java_locals_C"); 1191 } 1192 1193 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1194 zap_dead_java_or_native_locals(thread, is_java_frame); 1195 JRT_END 1196 1197 // The following does not work because for one thing, the 1198 // thread state is wrong; it expects java, but it is native. 1199 // Also, the invariants in a native stub are different and 1200 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1201 // in there. 1202 // So for now, we do not zap in native stubs. 1203 1204 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1205 zap_dead_java_or_native_locals(thread, is_native_frame); 1206 JRT_END 1207 1208 # endif