1 /* 2 * Copyright (c) 2012, 2016, 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 #include "precompiled.hpp" 25 #include "asm/codeBuffer.hpp" 26 #include "classfile/javaClasses.inline.hpp" 27 #include "code/codeCache.hpp" 28 #include "compiler/compileBroker.hpp" 29 #include "compiler/disassembler.hpp" 30 #include "jvmci/jvmciRuntime.hpp" 31 #include "jvmci/jvmciCompilerToVM.hpp" 32 #include "jvmci/jvmciCompiler.hpp" 33 #include "jvmci/jvmciJavaClasses.hpp" 34 #include "jvmci/jvmciEnv.hpp" 35 #include "logging/log.hpp" 36 #include "memory/oopFactory.hpp" 37 #include "memory/resourceArea.hpp" 38 #include "oops/oop.inline.hpp" 39 #include "oops/objArrayOop.inline.hpp" 40 #include "prims/jvm.h" 41 #include "runtime/biasedLocking.hpp" 42 #include "runtime/interfaceSupport.hpp" 43 #include "runtime/reflection.hpp" 44 #include "runtime/sharedRuntime.hpp" 45 #include "utilities/debug.hpp" 46 #include "utilities/defaultStream.hpp" 47 48 #if defined(_MSC_VER) 49 #define strtoll _strtoi64 50 #endif 51 52 jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL; 53 bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false; 54 bool JVMCIRuntime::_well_known_classes_initialized = false; 55 int JVMCIRuntime::_trivial_prefixes_count = 0; 56 char** JVMCIRuntime::_trivial_prefixes = NULL; 57 bool JVMCIRuntime::_shutdown_called = false; 58 59 BasicType JVMCIRuntime::kindToBasicType(Handle kind, TRAPS) { 60 if (kind.is_null()) { 61 THROW_(vmSymbols::java_lang_NullPointerException(), T_ILLEGAL); 62 } 63 jchar ch = JavaKind::typeChar(kind); 64 switch(ch) { 65 case 'z': return T_BOOLEAN; 66 case 'b': return T_BYTE; 67 case 's': return T_SHORT; 68 case 'c': return T_CHAR; 69 case 'i': return T_INT; 70 case 'f': return T_FLOAT; 71 case 'j': return T_LONG; 72 case 'd': return T_DOUBLE; 73 case 'a': return T_OBJECT; 74 case '-': return T_ILLEGAL; 75 default: 76 JVMCI_ERROR_(T_ILLEGAL, "unexpected Kind: %c", ch); 77 } 78 } 79 80 // Simple helper to see if the caller of a runtime stub which 81 // entered the VM has been deoptimized 82 83 static bool caller_is_deopted() { 84 JavaThread* thread = JavaThread::current(); 85 RegisterMap reg_map(thread, false); 86 frame runtime_frame = thread->last_frame(); 87 frame caller_frame = runtime_frame.sender(®_map); 88 assert(caller_frame.is_compiled_frame(), "must be compiled"); 89 return caller_frame.is_deoptimized_frame(); 90 } 91 92 // Stress deoptimization 93 static void deopt_caller() { 94 if ( !caller_is_deopted()) { 95 JavaThread* thread = JavaThread::current(); 96 RegisterMap reg_map(thread, false); 97 frame runtime_frame = thread->last_frame(); 98 frame caller_frame = runtime_frame.sender(®_map); 99 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); 100 assert(caller_is_deopted(), "Must be deoptimized"); 101 } 102 } 103 104 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass)) 105 JRT_BLOCK; 106 assert(klass->is_klass(), "not a class"); 107 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive 108 instanceKlassHandle h(thread, klass); 109 h->check_valid_for_instantiation(true, CHECK); 110 // make sure klass is initialized 111 h->initialize(CHECK); 112 // allocate instance and return via TLS 113 oop obj = h->allocate_instance(CHECK); 114 thread->set_vm_result(obj); 115 JRT_BLOCK_END; 116 117 if (ReduceInitialCardMarks) { 118 new_store_pre_barrier(thread); 119 } 120 JRT_END 121 122 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length)) 123 JRT_BLOCK; 124 // Note: no handle for klass needed since they are not used 125 // anymore after new_objArray() and no GC can happen before. 126 // (This may have to change if this code changes!) 127 assert(array_klass->is_klass(), "not a class"); 128 oop obj; 129 if (array_klass->is_typeArray_klass()) { 130 BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type(); 131 obj = oopFactory::new_typeArray(elt_type, length, CHECK); 132 } else { 133 Handle holder(THREAD, array_klass->klass_holder()); // keep the klass alive 134 Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass(); 135 obj = oopFactory::new_objArray(elem_klass, length, CHECK); 136 } 137 thread->set_vm_result(obj); 138 // This is pretty rare but this runtime patch is stressful to deoptimization 139 // if we deoptimize here so force a deopt to stress the path. 140 if (DeoptimizeALot) { 141 static int deopts = 0; 142 // Alternate between deoptimizing and raising an error (which will also cause a deopt) 143 if (deopts++ % 2 == 0) { 144 ResourceMark rm(THREAD); 145 THROW(vmSymbols::java_lang_OutOfMemoryError()); 146 } else { 147 deopt_caller(); 148 } 149 } 150 JRT_BLOCK_END; 151 152 if (ReduceInitialCardMarks) { 153 new_store_pre_barrier(thread); 154 } 155 JRT_END 156 157 void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) { 158 // After any safepoint, just before going back to compiled code, 159 // we inform the GC that we will be doing initializing writes to 160 // this object in the future without emitting card-marks, so 161 // GC may take any compensating steps. 162 // NOTE: Keep this code consistent with GraphKit::store_barrier. 163 164 oop new_obj = thread->vm_result(); 165 if (new_obj == NULL) return; 166 167 assert(Universe::heap()->can_elide_tlab_store_barriers(), 168 "compiler must check this first"); 169 // GC may decide to give back a safer copy of new_obj. 170 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 171 thread->set_vm_result(new_obj); 172 } 173 174 JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims)) 175 assert(klass->is_klass(), "not a class"); 176 assert(rank >= 1, "rank must be nonzero"); 177 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive 178 oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK); 179 thread->set_vm_result(obj); 180 JRT_END 181 182 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length)) 183 oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK); 184 thread->set_vm_result(obj); 185 JRT_END 186 187 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror)) 188 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror)); 189 190 if (klass == NULL) { 191 ResourceMark rm(THREAD); 192 THROW(vmSymbols::java_lang_InstantiationException()); 193 } 194 195 // Create new instance (the receiver) 196 klass->check_valid_for_instantiation(false, CHECK); 197 198 // Make sure klass gets initialized 199 klass->initialize(CHECK); 200 201 oop obj = klass->allocate_instance(CHECK); 202 thread->set_vm_result(obj); 203 JRT_END 204 205 extern void vm_exit(int code); 206 207 // Enter this method from compiled code handler below. This is where we transition 208 // to VM mode. This is done as a helper routine so that the method called directly 209 // from compiled code does not have to transition to VM. This allows the entry 210 // method to see if the nmethod that we have just looked up a handler for has 211 // been deoptimized while we were in the vm. This simplifies the assembly code 212 // cpu directories. 213 // 214 // We are entering here from exception stub (via the entry method below) 215 // If there is a compiled exception handler in this method, we will continue there; 216 // otherwise we will unwind the stack and continue at the caller of top frame method 217 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to 218 // control the area where we can allow a safepoint. After we exit the safepoint area we can 219 // check to see if the handler we are going to return is now in a nmethod that has 220 // been deoptimized. If that is the case we return the deopt blob 221 // unpack_with_exception entry instead. This makes life for the exception blob easier 222 // because making that same check and diverting is painful from assembly language. 223 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, CompiledMethod*& cm)) 224 // Reset method handle flag. 225 thread->set_is_method_handle_return(false); 226 227 Handle exception(thread, ex); 228 cm = CodeCache::find_compiled(pc); 229 assert(cm != NULL, "this is not a compiled method"); 230 // Adjust the pc as needed/ 231 if (cm->is_deopt_pc(pc)) { 232 RegisterMap map(thread, false); 233 frame exception_frame = thread->last_frame().sender(&map); 234 // if the frame isn't deopted then pc must not correspond to the caller of last_frame 235 assert(exception_frame.is_deoptimized_frame(), "must be deopted"); 236 pc = exception_frame.pc(); 237 } 238 #ifdef ASSERT 239 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception"); 240 assert(exception->is_oop(), "just checking"); 241 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError 242 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 243 if (ExitVMOnVerifyError) vm_exit(-1); 244 ShouldNotReachHere(); 245 } 246 #endif 247 248 // Check the stack guard pages and reenable them if necessary and there is 249 // enough space on the stack to do so. Use fast exceptions only if the guard 250 // pages are enabled. 251 bool guard_pages_enabled = thread->stack_guards_enabled(); 252 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); 253 254 if (JvmtiExport::can_post_on_exceptions()) { 255 // To ensure correct notification of exception catches and throws 256 // we have to deoptimize here. If we attempted to notify the 257 // catches and throws during this exception lookup it's possible 258 // we could deoptimize on the way out of the VM and end back in 259 // the interpreter at the throw site. This would result in double 260 // notifications since the interpreter would also notify about 261 // these same catches and throws as it unwound the frame. 262 263 RegisterMap reg_map(thread); 264 frame stub_frame = thread->last_frame(); 265 frame caller_frame = stub_frame.sender(®_map); 266 267 // We don't really want to deoptimize the nmethod itself since we 268 // can actually continue in the exception handler ourselves but I 269 // don't see an easy way to have the desired effect. 270 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); 271 assert(caller_is_deopted(), "Must be deoptimized"); 272 273 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); 274 } 275 276 // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions 277 if (guard_pages_enabled) { 278 address fast_continuation = cm->handler_for_exception_and_pc(exception, pc); 279 if (fast_continuation != NULL) { 280 // Set flag if return address is a method handle call site. 281 thread->set_is_method_handle_return(cm->is_method_handle_return(pc)); 282 return fast_continuation; 283 } 284 } 285 286 // If the stack guard pages are enabled, check whether there is a handler in 287 // the current method. Otherwise (guard pages disabled), force an unwind and 288 // skip the exception cache update (i.e., just leave continuation==NULL). 289 address continuation = NULL; 290 if (guard_pages_enabled) { 291 292 // New exception handling mechanism can support inlined methods 293 // with exception handlers since the mappings are from PC to PC 294 295 // debugging support 296 // tracing 297 if (log_is_enabled(Info, exceptions)) { 298 ResourceMark rm; 299 stringStream tempst; 300 tempst.print("compiled method <%s>\n" 301 " at PC" INTPTR_FORMAT " for thread " INTPTR_FORMAT, 302 cm->method()->print_value_string(), p2i(pc), p2i(thread)); 303 Exceptions::log_exception(exception, tempst); 304 } 305 // for AbortVMOnException flag 306 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 307 308 // Clear out the exception oop and pc since looking up an 309 // exception handler can cause class loading, which might throw an 310 // exception and those fields are expected to be clear during 311 // normal bytecode execution. 312 thread->clear_exception_oop_and_pc(); 313 314 continuation = SharedRuntime::compute_compiled_exc_handler(cm, pc, exception, false, false); 315 // If an exception was thrown during exception dispatch, the exception oop may have changed 316 thread->set_exception_oop(exception()); 317 thread->set_exception_pc(pc); 318 319 // the exception cache is used only by non-implicit exceptions 320 if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) { 321 cm->add_handler_for_exception_and_pc(exception, pc, continuation); 322 } 323 } 324 325 // Set flag if return address is a method handle call site. 326 thread->set_is_method_handle_return(cm->is_method_handle_return(pc)); 327 328 if (log_is_enabled(Info, exceptions)) { 329 ResourceMark rm; 330 log_info(exceptions)("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT 331 " for exception thrown at PC " PTR_FORMAT, 332 p2i(thread), p2i(continuation), p2i(pc)); 333 } 334 335 return continuation; 336 JRT_END 337 338 // Enter this method from compiled code only if there is a Java exception handler 339 // in the method handling the exception. 340 // We are entering here from exception stub. We don't do a normal VM transition here. 341 // We do it in a helper. This is so we can check to see if the nmethod we have just 342 // searched for an exception handler has been deoptimized in the meantime. 343 address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) { 344 oop exception = thread->exception_oop(); 345 address pc = thread->exception_pc(); 346 // Still in Java mode 347 DEBUG_ONLY(ResetNoHandleMark rnhm); 348 CompiledMethod* cm = NULL; 349 address continuation = NULL; 350 { 351 // Enter VM mode by calling the helper 352 ResetNoHandleMark rnhm; 353 continuation = exception_handler_for_pc_helper(thread, exception, pc, cm); 354 } 355 // Back in JAVA, use no oops DON'T safepoint 356 357 // Now check to see if the compiled method we were called from is now deoptimized. 358 // If so we must return to the deopt blob and deoptimize the nmethod 359 if (cm != NULL && caller_is_deopted()) { 360 continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); 361 } 362 363 assert(continuation != NULL, "no handler found"); 364 return continuation; 365 } 366 367 JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock)) 368 IF_TRACE_jvmci_3 { 369 char type[O_BUFLEN]; 370 obj->klass()->name()->as_C_string(type, O_BUFLEN); 371 markOop mark = obj->mark(); 372 TRACE_jvmci_3("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock)); 373 tty->flush(); 374 } 375 #ifdef ASSERT 376 if (PrintBiasedLockingStatistics) { 377 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); 378 } 379 #endif 380 Handle h_obj(thread, obj); 381 assert(h_obj()->is_oop(), "must be NULL or an object"); 382 if (UseBiasedLocking) { 383 // Retry fast entry if bias is revoked to avoid unnecessary inflation 384 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); 385 } else { 386 if (JVMCIUseFastLocking) { 387 // When using fast locking, the compiled code has already tried the fast case 388 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD); 389 } else { 390 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD); 391 } 392 } 393 TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj)); 394 JRT_END 395 396 JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock)) 397 assert(thread == JavaThread::current(), "threads must correspond"); 398 assert(thread->last_Java_sp(), "last_Java_sp must be set"); 399 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown 400 EXCEPTION_MARK; 401 402 #ifdef DEBUG 403 if (!obj->is_oop()) { 404 ResetNoHandleMark rhm; 405 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null(); 406 if (method != NULL) { 407 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj)); 408 } 409 thread->print_stack_on(tty); 410 assert(false, "invalid lock object pointer dected"); 411 } 412 #endif 413 414 if (JVMCIUseFastLocking) { 415 // When using fast locking, the compiled code has already tried the fast case 416 ObjectSynchronizer::slow_exit(obj, lock, THREAD); 417 } else { 418 ObjectSynchronizer::fast_exit(obj, lock, THREAD); 419 } 420 IF_TRACE_jvmci_3 { 421 char type[O_BUFLEN]; 422 obj->klass()->name()->as_C_string(type, O_BUFLEN); 423 TRACE_jvmci_3("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock)); 424 tty->flush(); 425 } 426 JRT_END 427 428 JRT_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, const char* exception, const char* message)) 429 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK); 430 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message); 431 JRT_END 432 433 JRT_ENTRY(void, JVMCIRuntime::throw_klass_external_name_exception(JavaThread* thread, const char* exception, Klass* klass)) 434 ResourceMark rm(thread); 435 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK); 436 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, klass->external_name()); 437 JRT_END 438 439 JRT_ENTRY(void, JVMCIRuntime::throw_class_cast_exception(JavaThread* thread, const char* exception, Klass* caster_klass, Klass* target_klass)) 440 ResourceMark rm(thread); 441 const char* message = SharedRuntime::generate_class_cast_message(caster_klass, target_klass); 442 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK); 443 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message); 444 JRT_END 445 446 JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline)) 447 ttyLocker ttyl; 448 449 if (obj == NULL) { 450 tty->print("NULL"); 451 } else if (obj->is_oop_or_null(true) && (!as_string || !java_lang_String::is_instance(obj))) { 452 if (obj->is_oop_or_null(true)) { 453 char buf[O_BUFLEN]; 454 tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj)); 455 } else { 456 tty->print(INTPTR_FORMAT, p2i(obj)); 457 } 458 } else { 459 ResourceMark rm; 460 assert(obj != NULL && java_lang_String::is_instance(obj), "must be"); 461 char *buf = java_lang_String::as_utf8_string(obj); 462 tty->print_raw(buf); 463 } 464 if (newline) { 465 tty->cr(); 466 } 467 JRT_END 468 469 JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj)) 470 thread->satb_mark_queue().enqueue(obj); 471 JRT_END 472 473 JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr)) 474 thread->dirty_card_queue().enqueue(card_addr); 475 JRT_END 476 477 JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child)) 478 bool ret = true; 479 if(!Universe::heap()->is_in_closed_subset(parent)) { 480 tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent)); 481 parent->print(); 482 ret=false; 483 } 484 if(!Universe::heap()->is_in_closed_subset(child)) { 485 tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child)); 486 child->print(); 487 ret=false; 488 } 489 return (jint)ret; 490 JRT_END 491 492 JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value)) 493 ResourceMark rm; 494 const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where; 495 char *detail_msg = NULL; 496 if (format != 0L) { 497 const char* buf = (char*) (address) format; 498 size_t detail_msg_length = strlen(buf) * 2; 499 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length); 500 jio_snprintf(detail_msg, detail_msg_length, buf, value); 501 report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg); 502 } else { 503 report_vm_error(__FILE__, __LINE__, error_msg); 504 } 505 JRT_END 506 507 JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread)) 508 oop exception = thread->exception_oop(); 509 assert(exception != NULL, "npe"); 510 thread->set_exception_oop(NULL); 511 thread->set_exception_pc(0); 512 return exception; 513 JRT_END 514 515 PRAGMA_DIAG_PUSH 516 PRAGMA_FORMAT_NONLITERAL_IGNORED 517 JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3)) 518 ResourceMark rm; 519 assert(format != NULL && java_lang_String::is_instance(format), "must be"); 520 char *buf = java_lang_String::as_utf8_string(format); 521 tty->print((const char*)buf, v1, v2, v3); 522 JRT_END 523 PRAGMA_DIAG_POP 524 525 static void decipher(jlong v, bool ignoreZero) { 526 if (v != 0 || !ignoreZero) { 527 void* p = (void *)(address) v; 528 CodeBlob* cb = CodeCache::find_blob(p); 529 if (cb) { 530 if (cb->is_nmethod()) { 531 char buf[O_BUFLEN]; 532 tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin())); 533 return; 534 } 535 cb->print_value_on(tty); 536 return; 537 } 538 if (Universe::heap()->is_in(p)) { 539 oop obj = oop(p); 540 obj->print_value_on(tty); 541 return; 542 } 543 tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v); 544 } 545 } 546 547 PRAGMA_DIAG_PUSH 548 PRAGMA_FORMAT_NONLITERAL_IGNORED 549 JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3)) 550 ResourceMark rm; 551 const char *buf = (const char*) (address) format; 552 if (vmError) { 553 if (buf != NULL) { 554 fatal(buf, v1, v2, v3); 555 } else { 556 fatal("<anonymous error>"); 557 } 558 } else if (buf != NULL) { 559 tty->print(buf, v1, v2, v3); 560 } else { 561 assert(v2 == 0, "v2 != 0"); 562 assert(v3 == 0, "v3 != 0"); 563 decipher(v1, false); 564 } 565 JRT_END 566 PRAGMA_DIAG_POP 567 568 JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline)) 569 union { 570 jlong l; 571 jdouble d; 572 jfloat f; 573 } uu; 574 uu.l = value; 575 switch (typeChar) { 576 case 'z': tty->print(value == 0 ? "false" : "true"); break; 577 case 'b': tty->print("%d", (jbyte) value); break; 578 case 'c': tty->print("%c", (jchar) value); break; 579 case 's': tty->print("%d", (jshort) value); break; 580 case 'i': tty->print("%d", (jint) value); break; 581 case 'f': tty->print("%f", uu.f); break; 582 case 'j': tty->print(JLONG_FORMAT, value); break; 583 case 'd': tty->print("%lf", uu.d); break; 584 default: assert(false, "unknown typeChar"); break; 585 } 586 if (newline) { 587 tty->cr(); 588 } 589 JRT_END 590 591 JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj)) 592 return (jint) obj->identity_hash(); 593 JRT_END 594 595 JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted)) 596 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. 597 // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF. 598 Handle receiverHandle(thread, receiver); 599 MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock); 600 JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle()); 601 if (receiverThread == NULL) { 602 // The other thread may exit during this process, which is ok so return false. 603 return JNI_FALSE; 604 } else { 605 return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0); 606 } 607 JRT_END 608 609 JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value)) 610 deopt_caller(); 611 return value; 612 JRT_END 613 614 // private static JVMCIRuntime JVMCI.initializeRuntime() 615 JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c)) 616 if (!EnableJVMCI) { 617 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled") 618 } 619 JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL); 620 jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL); 621 return ret; 622 JVM_END 623 624 Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) { 625 guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime"); 626 627 TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle())); 628 KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle())); 629 TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle())); 630 TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle())); 631 JavaValue result(T_OBJECT); 632 if (args == NULL) { 633 JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle())); 634 } else { 635 JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle())); 636 } 637 return Handle((oop)result.get_jobject()); 638 } 639 640 void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) { 641 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { 642 ResourceMark rm; 643 #ifdef ASSERT 644 // This should only be called in the context of the JVMCI class being initialized 645 TempNewSymbol name = SymbolTable::new_symbol("jdk/vm/ci/runtime/JVMCI", CHECK); 646 Klass* k = SystemDictionary::resolve_or_null(name, CHECK); 647 instanceKlassHandle klass = InstanceKlass::cast(k); 648 assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD), 649 "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization"); 650 #endif 651 652 Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime", 653 "runtime", 654 "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK); 655 objArrayOop trivial_prefixes = HotSpotJVMCIRuntime::trivialPrefixes(result); 656 if (trivial_prefixes != NULL) { 657 char** prefixes = NEW_C_HEAP_ARRAY(char*, trivial_prefixes->length(), mtCompiler); 658 for (int i = 0; i < trivial_prefixes->length(); i++) { 659 oop str = trivial_prefixes->obj_at(i); 660 if (str == NULL) { 661 THROW(vmSymbols::java_lang_NullPointerException()); 662 } else { 663 prefixes[i] = strdup(java_lang_String::as_utf8_string(str)); 664 } 665 } 666 _trivial_prefixes = prefixes; 667 _trivial_prefixes_count = trivial_prefixes->length(); 668 } 669 _HotSpotJVMCIRuntime_initialized = true; 670 _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result()); 671 } 672 } 673 674 void JVMCIRuntime::initialize_JVMCI(TRAPS) { 675 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { 676 callStatic("jdk/vm/ci/runtime/JVMCI", 677 "getRuntime", 678 "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK); 679 } 680 assert(_HotSpotJVMCIRuntime_initialized == true, "what?"); 681 } 682 683 void JVMCIRuntime::initialize_well_known_classes(TRAPS) { 684 if (JVMCIRuntime::_well_known_classes_initialized == false) { 685 SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID; 686 SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK); 687 JVMCIJavaClasses::compute_offsets(CHECK); 688 JVMCIRuntime::_well_known_classes_initialized = true; 689 } 690 } 691 692 void JVMCIRuntime::metadata_do(void f(Metadata*)) { 693 // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in 694 // the SystemDictionary well known classes should ensure the other 695 // classes have already been loaded, so make sure their order in the 696 // table enforces that. 697 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) < 698 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); 699 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) < 700 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); 701 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) < 702 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); 703 704 if (HotSpotJVMCIMetaAccessContext::klass() == NULL || 705 !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) { 706 // Nothing could be registered yet 707 return; 708 } 709 710 // WeakReference<HotSpotJVMCIMetaAccessContext>[] 711 objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts(); 712 if (allContexts == NULL) { 713 return; 714 } 715 716 // These must be loaded at this point but the linking state doesn't matter. 717 assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded"); 718 assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded"); 719 assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded"); 720 721 for (int i = 0; i < allContexts->length(); i++) { 722 oop ref = allContexts->obj_at(i); 723 if (ref != NULL) { 724 oop referent = java_lang_ref_Reference::referent(ref); 725 if (referent != NULL) { 726 // Chunked Object[] with last element pointing to next chunk 727 objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent); 728 while (metadataRoots != NULL) { 729 for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) { 730 oop reference = metadataRoots->obj_at(typeIndex); 731 if (reference == NULL) { 732 continue; 733 } 734 oop metadataRoot = java_lang_ref_Reference::referent(reference); 735 if (metadataRoot == NULL) { 736 continue; 737 } 738 if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) { 739 Method* method = CompilerToVM::asMethod(metadataRoot); 740 f(method); 741 } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) { 742 ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot); 743 f(constantPool); 744 } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) { 745 Klass* klass = CompilerToVM::asKlass(metadataRoot); 746 f(klass); 747 } else { 748 metadataRoot->print(); 749 ShouldNotReachHere(); 750 } 751 } 752 metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1); 753 assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type"); 754 } 755 } 756 } 757 } 758 } 759 760 // private static void CompilerToVM.registerNatives() 761 JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass)) 762 if (!EnableJVMCI) { 763 THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled"); 764 } 765 766 #ifdef _LP64 767 #ifndef TARGET_ARCH_sparc 768 uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end(); 769 uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024; 770 guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)"); 771 #endif // TARGET_ARCH_sparc 772 #else 773 fatal("check TLAB allocation code for address space conflicts"); 774 #endif 775 776 JVMCIRuntime::initialize_well_known_classes(CHECK); 777 778 { 779 ThreadToNativeFromVM trans(thread); 780 env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count()); 781 } 782 JVM_END 783 784 #define CHECK_WARN_ABORT_(message) THREAD); \ 785 if (HAS_PENDING_EXCEPTION) { \ 786 warning(message); \ 787 char buf[512]; \ 788 jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \ 789 JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \ 790 return; \ 791 } \ 792 (void)(0 793 794 void JVMCIRuntime::shutdown(TRAPS) { 795 if (_HotSpotJVMCIRuntime_instance != NULL) { 796 _shutdown_called = true; 797 HandleMark hm(THREAD); 798 Handle receiver = get_HotSpotJVMCIRuntime(CHECK); 799 JavaValue result(T_VOID); 800 JavaCallArguments args; 801 args.push_oop(receiver); 802 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK); 803 } 804 } 805 806 bool JVMCIRuntime::treat_as_trivial(Method* method) { 807 if (_HotSpotJVMCIRuntime_initialized) { 808 for (int i = 0; i < _trivial_prefixes_count; i++) { 809 if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) { 810 return true; 811 } 812 } 813 } 814 return false; 815 }