1 /* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "ci/ciReplay.hpp" 28 #include "classfile/altHashing.hpp" 29 #include "classfile/classLoader.hpp" 30 #include "classfile/javaClasses.hpp" 31 #include "classfile/symbolTable.hpp" 32 #include "classfile/systemDictionary.hpp" 33 #include "classfile/vmSymbols.hpp" 34 #include "interpreter/linkResolver.hpp" 35 #include "utilities/macros.hpp" 36 #if INCLUDE_ALL_GCS 37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 38 #endif // INCLUDE_ALL_GCS 39 #include "memory/allocation.hpp" 40 #include "memory/allocation.inline.hpp" 41 #include "memory/gcLocker.inline.hpp" 42 #include "memory/oopFactory.hpp" 43 #include "memory/universe.inline.hpp" 44 #include "oops/instanceKlass.hpp" 45 #include "oops/instanceOop.hpp" 46 #include "oops/markOop.hpp" 47 #include "oops/method.hpp" 48 #include "oops/objArrayKlass.hpp" 49 #include "oops/objArrayOop.hpp" 50 #include "oops/oop.inline.hpp" 51 #include "oops/symbol.hpp" 52 #include "oops/typeArrayKlass.hpp" 53 #include "oops/typeArrayOop.hpp" 54 #include "prims/jni.h" 55 #include "prims/jniCheck.hpp" 56 #include "prims/jniExport.hpp" 57 #include "prims/jniFastGetField.hpp" 58 #include "prims/jvm.h" 59 #include "prims/jvm_misc.hpp" 60 #include "prims/jvmtiExport.hpp" 61 #include "prims/jvmtiThreadState.hpp" 62 #include "runtime/compilationPolicy.hpp" 63 #include "runtime/fieldDescriptor.hpp" 64 #include "runtime/fprofiler.hpp" 65 #include "runtime/handles.inline.hpp" 66 #include "runtime/interfaceSupport.hpp" 67 #include "runtime/java.hpp" 68 #include "runtime/javaCalls.hpp" 69 #include "runtime/jfieldIDWorkaround.hpp" 70 #include "runtime/reflection.hpp" 71 #include "runtime/sharedRuntime.hpp" 72 #include "runtime/signature.hpp" 73 #include "runtime/thread.inline.hpp" 74 #include "runtime/vm_operations.hpp" 75 #include "services/runtimeService.hpp" 76 #include "trace/tracing.hpp" 77 #include "utilities/defaultStream.hpp" 78 #include "utilities/dtrace.hpp" 79 #include "utilities/events.hpp" 80 #include "utilities/histogram.hpp" 81 #ifdef TARGET_OS_FAMILY_linux 82 # include "os_linux.inline.hpp" 83 #endif 84 #ifdef TARGET_OS_FAMILY_solaris 85 # include "os_solaris.inline.hpp" 86 #endif 87 #ifdef TARGET_OS_FAMILY_windows 88 # include "os_windows.inline.hpp" 89 #endif 90 #ifdef TARGET_OS_FAMILY_bsd 91 # include "os_bsd.inline.hpp" 92 #endif 93 94 static jint CurrentVersion = JNI_VERSION_1_8; 95 96 97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace 98 // '-return' probe regardless of the return path is taken out of the function. 99 // Methods that have multiple return paths use this to avoid having to 100 // instrument each return path. Methods that use CHECK or THROW must use this 101 // since those macros can cause an immedate uninstrumented return. 102 // 103 // In order to get the return value, a reference to the variable containing 104 // the return value must be passed to the contructor of the object, and 105 // the return value must be set before return (since the mark object has 106 // a reference to it). 107 // 108 // Example: 109 // DT_RETURN_MARK_DECL(SomeFunc, int); 110 // JNI_ENTRY(int, SomeFunc, ...) 111 // int return_value = 0; 112 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); 113 // foo(CHECK_0) 114 // return_value = 5; 115 // return return_value; 116 // JNI_END 117 #ifndef USDT2 118 #define DT_RETURN_MARK_DECL(name, type) \ 119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ 120 DTRACE_ONLY( \ 121 class DTraceReturnProbeMark_##name { \ 122 public: \ 123 const type& _ret_ref; \ 124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 125 ~DTraceReturnProbeMark_##name() { \ 126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ 127 } \ 128 } \ 129 ) 130 // Void functions are simpler since there's no return value 131 #define DT_VOID_RETURN_MARK_DECL(name) \ 132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ 133 DTRACE_ONLY( \ 134 class DTraceReturnProbeMark_##name { \ 135 public: \ 136 ~DTraceReturnProbeMark_##name() { \ 137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ 138 } \ 139 } \ 140 ) 141 142 #else /* USDT2 */ 143 144 #define DT_RETURN_MARK_DECL(name, type, probe) \ 145 DTRACE_ONLY( \ 146 class DTraceReturnProbeMark_##name { \ 147 public: \ 148 const type& _ret_ref; \ 149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 150 ~DTraceReturnProbeMark_##name() { \ 151 probe; \ 152 } \ 153 } \ 154 ) 155 // Void functions are simpler since there's no return value 156 #define DT_VOID_RETURN_MARK_DECL(name, probe) \ 157 DTRACE_ONLY( \ 158 class DTraceReturnProbeMark_##name { \ 159 public: \ 160 ~DTraceReturnProbeMark_##name() { \ 161 probe; \ 162 } \ 163 } \ 164 ) 165 #endif /* USDT2 */ 166 167 // Place these macros in the function to mark the return. Non-void 168 // functions need the type and address of the return value. 169 #define DT_RETURN_MARK(name, type, ref) \ 170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) 171 #define DT_VOID_RETURN_MARK(name) \ 172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) 173 174 175 // Use these to select distinct code for floating-point vs. non-floating point 176 // situations. Used from within common macros where we need slightly 177 // different behavior for Float/Double 178 #define FP_SELECT_Boolean(intcode, fpcode) intcode 179 #define FP_SELECT_Byte(intcode, fpcode) intcode 180 #define FP_SELECT_Char(intcode, fpcode) intcode 181 #define FP_SELECT_Short(intcode, fpcode) intcode 182 #define FP_SELECT_Object(intcode, fpcode) intcode 183 #define FP_SELECT_Int(intcode, fpcode) intcode 184 #define FP_SELECT_Long(intcode, fpcode) intcode 185 #define FP_SELECT_Float(intcode, fpcode) fpcode 186 #define FP_SELECT_Double(intcode, fpcode) fpcode 187 #define FP_SELECT(TypeName, intcode, fpcode) \ 188 FP_SELECT_##TypeName(intcode, fpcode) 189 190 #define COMMA , 191 192 // Choose DT_RETURN_MARK macros based on the type: float/double -> void 193 // (dtrace doesn't do FP yet) 194 #ifndef USDT2 195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ 196 FP_SELECT(TypeName, \ 197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) 198 #else /* USDT2 */ 199 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \ 200 FP_SELECT(TypeName, \ 201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) ) 202 #endif /* USDT2 */ 203 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ 204 FP_SELECT(TypeName, \ 205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) 206 207 208 // out-of-line helpers for class jfieldIDWorkaround: 209 210 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) { 211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { 212 uintptr_t as_uint = (uintptr_t) id; 213 intptr_t offset = raw_instance_offset(id); 214 if (is_checked_jfieldID(id)) { 215 if (!klass_hash_ok(k, id)) { 216 return false; 217 } 218 } 219 return InstanceKlass::cast(k)->contains_field_offset(offset); 220 } else { 221 JNIid* result = (JNIid*) id; 222 #ifdef ASSERT 223 return result != NULL && result->is_static_field_id(); 224 #else 225 return result != NULL; 226 #endif 227 } 228 } 229 230 231 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) { 232 if (offset <= small_offset_mask) { 233 Klass* field_klass = k; 234 Klass* super_klass = field_klass->super(); 235 // With compressed oops the most super class with nonstatic fields would 236 // be the owner of fields embedded in the header. 237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() && 238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) { 239 field_klass = super_klass; // super contains the field also 240 super_klass = field_klass->super(); 241 } 242 debug_only(No_Safepoint_Verifier nosafepoint;) 243 uintptr_t klass_hash = field_klass->identity_hash(); 244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; 245 } else { 246 #if 0 247 #ifndef PRODUCT 248 { 249 ResourceMark rm; 250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name()); 251 } 252 #endif 253 #endif 254 return 0; 255 } 256 } 257 258 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) { 259 uintptr_t as_uint = (uintptr_t) id; 260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; 261 do { 262 debug_only(No_Safepoint_Verifier nosafepoint;) 263 // Could use a non-blocking query for identity_hash here... 264 if ((k->identity_hash() & klass_mask) == klass_hash) 265 return true; 266 k = k->super(); 267 } while (k != NULL); 268 return false; 269 } 270 271 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) { 272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); 273 uintptr_t as_uint = (uintptr_t) id; 274 intptr_t offset = raw_instance_offset(id); 275 if (VerifyJNIFields) { 276 if (is_checked_jfieldID(id)) { 277 guarantee(klass_hash_ok(k, id), 278 "Bug in native code: jfieldID class must match object"); 279 } else { 280 #if 0 281 #ifndef PRODUCT 282 if (Verbose) { 283 ResourceMark rm; 284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name()); 285 } 286 #endif 287 #endif 288 } 289 } 290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset), 291 "Bug in native code: jfieldID offset must address interior of object"); 292 } 293 294 // Pick a reasonable higher bound for local capacity requested 295 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too 296 // high because a test (or very unusual application) may try to allocate 297 // that many handles and run out of swap space. An implementation is 298 // permitted to allocate more handles than the ensured capacity, so this 299 // value is set high enough to prevent compatibility problems. 300 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K; 301 302 303 // Wrapper to trace JNI functions 304 305 #ifdef ASSERT 306 Histogram* JNIHistogram; 307 static volatile jint JNIHistogram_lock = 0; 308 309 class JNITraceWrapper : public StackObj { 310 public: 311 JNITraceWrapper(const char* format, ...) { 312 if (TraceJNICalls) { 313 va_list ap; 314 va_start(ap, format); 315 tty->print("JNI "); 316 tty->vprint_cr(format, ap); 317 va_end(ap); 318 } 319 } 320 }; 321 322 class JNIHistogramElement : public HistogramElement { 323 public: 324 JNIHistogramElement(const char* name); 325 }; 326 327 JNIHistogramElement::JNIHistogramElement(const char* elementName) { 328 _name = elementName; 329 uintx count = 0; 330 331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { 332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { 333 count +=1; 334 if ( (WarnOnStalledSpinLock > 0) 335 && (count % WarnOnStalledSpinLock == 0)) { 336 warning("JNIHistogram_lock seems to be stalled"); 337 } 338 } 339 } 340 341 342 if(JNIHistogram == NULL) 343 JNIHistogram = new Histogram("JNI Call Counts",100); 344 345 JNIHistogram->add_element(this); 346 Atomic::dec(&JNIHistogram_lock); 347 } 348 349 #define JNICountWrapper(arg) \ 350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \ 351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ 352 if (e != NULL) e->increment_count() 353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) 354 #else 355 #define JNIWrapper(arg) 356 #endif 357 358 359 // Implementation of JNI entries 360 361 #ifndef USDT2 362 DT_RETURN_MARK_DECL(DefineClass, jclass); 363 #else /* USDT2 */ 364 DT_RETURN_MARK_DECL(DefineClass, jclass 365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref)); 366 #endif /* USDT2 */ 367 368 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, 369 const jbyte *buf, jsize bufLen)) 370 JNIWrapper("DefineClass"); 371 372 #ifndef USDT2 373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry, 374 env, name, loaderRef, buf, bufLen); 375 #else /* USDT2 */ 376 HOTSPOT_JNI_DEFINECLASS_ENTRY( 377 env, (char*) name, loaderRef, (char*) buf, bufLen); 378 #endif /* USDT2 */ 379 jclass cls = NULL; 380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); 381 382 TempNewSymbol class_name = NULL; 383 // Since exceptions can be thrown, class initialization can take place 384 // if name is NULL no check for class name in .class stream has to be made. 385 if (name != NULL) { 386 const int str_len = (int)strlen(name); 387 if (str_len > Symbol::max_length()) { 388 // It's impossible to create this class; the name cannot fit 389 // into the constant pool. 390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 391 } 392 class_name = SymbolTable::new_symbol(name, CHECK_NULL); 393 } 394 ResourceMark rm(THREAD); 395 ClassFileStream st((u1*) buf, bufLen, NULL); 396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); 397 398 if (UsePerfData && !class_loader.is_null()) { 399 // check whether the current caller thread holds the lock or not. 400 // If not, increment the corresponding counter 401 if (ObjectSynchronizer:: 402 query_lock_ownership((JavaThread*)THREAD, class_loader) != 403 ObjectSynchronizer::owner_self) { 404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); 405 } 406 } 407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, 408 Handle(), &st, true, 409 CHECK_NULL); 410 411 if (TraceClassResolution && k != NULL) { 412 trace_class_resolution(k); 413 } 414 415 cls = (jclass)JNIHandles::make_local( 416 env, k->java_mirror()); 417 return cls; 418 JNI_END 419 420 421 422 static bool first_time_FindClass = true; 423 424 #ifndef USDT2 425 DT_RETURN_MARK_DECL(FindClass, jclass); 426 #else /* USDT2 */ 427 DT_RETURN_MARK_DECL(FindClass, jclass 428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref)); 429 #endif /* USDT2 */ 430 431 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) 432 JNIWrapper("FindClass"); 433 #ifndef USDT2 434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); 435 #else /* USDT2 */ 436 HOTSPOT_JNI_FINDCLASS_ENTRY( 437 env, (char *)name); 438 #endif /* USDT2 */ 439 440 jclass result = NULL; 441 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); 442 443 // Remember if we are the first invocation of jni_FindClass 444 bool first_time = first_time_FindClass; 445 first_time_FindClass = false; 446 447 // Sanity check the name: it cannot be null or larger than the maximum size 448 // name we can fit in the constant pool. 449 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { 450 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 451 } 452 453 //%note jni_3 454 Handle loader; 455 Handle protection_domain; 456 // Find calling class 457 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); 458 if (k.not_null()) { 459 loader = Handle(THREAD, k->class_loader()); 460 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed 461 // in the correct class context. 462 if (loader.is_null() && 463 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { 464 JavaValue result(T_OBJECT); 465 JavaCalls::call_static(&result, k, 466 vmSymbols::getFromClass_name(), 467 vmSymbols::void_class_signature(), 468 thread); 469 if (HAS_PENDING_EXCEPTION) { 470 Handle ex(thread, thread->pending_exception()); 471 CLEAR_PENDING_EXCEPTION; 472 THROW_HANDLE_0(ex); 473 } 474 oop mirror = (oop) result.get_jobject(); 475 loader = Handle(THREAD, 476 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader()); 477 protection_domain = Handle(THREAD, 478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain()); 479 } 480 } else { 481 // We call ClassLoader.getSystemClassLoader to obtain the system class loader. 482 loader = Handle(THREAD, SystemDictionary::java_system_loader()); 483 } 484 485 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 486 result = find_class_from_class_loader(env, sym, true, loader, 487 protection_domain, true, thread); 488 489 if (TraceClassResolution && result != NULL) { 490 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 491 } 492 493 // If we were the first invocation of jni_FindClass, we enable compilation again 494 // rather than just allowing invocation counter to overflow and decay. 495 // Controlled by flag DelayCompilationDuringStartup. 496 if (first_time && !CompileTheWorld) 497 CompilationPolicy::completed_vm_startup(); 498 499 return result; 500 JNI_END 501 502 #ifndef USDT2 503 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); 504 #else /* USDT2 */ 505 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID 506 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref)); 507 #endif /* USDT2 */ 508 509 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) 510 JNIWrapper("FromReflectedMethod"); 511 #ifndef USDT2 512 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); 513 #else /* USDT2 */ 514 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY( 515 env, method); 516 #endif /* USDT2 */ 517 jmethodID ret = NULL; 518 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); 519 520 // method is a handle to a java.lang.reflect.Method object 521 oop reflected = JNIHandles::resolve_non_null(method); 522 oop mirror = NULL; 523 int slot = 0; 524 525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { 526 mirror = java_lang_reflect_Constructor::clazz(reflected); 527 slot = java_lang_reflect_Constructor::slot(reflected); 528 } else { 529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type"); 530 mirror = java_lang_reflect_Method::clazz(reflected); 531 slot = java_lang_reflect_Method::slot(reflected); 532 } 533 Klass* k = java_lang_Class::as_Klass(mirror); 534 535 KlassHandle k1(THREAD, k); 536 // Make sure class is initialized before handing id's out to methods 537 k1()->initialize(CHECK_NULL); 538 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot); 539 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted 540 return ret; 541 JNI_END 542 543 #ifndef USDT2 544 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); 545 #else /* USDT2 */ 546 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID 547 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref)); 548 #endif /* USDT2 */ 549 550 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) 551 JNIWrapper("FromReflectedField"); 552 #ifndef USDT2 553 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); 554 #else /* USDT2 */ 555 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY( 556 env, field); 557 #endif /* USDT2 */ 558 jfieldID ret = NULL; 559 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); 560 561 // field is a handle to a java.lang.reflect.Field object 562 oop reflected = JNIHandles::resolve_non_null(field); 563 oop mirror = java_lang_reflect_Field::clazz(reflected); 564 Klass* k = java_lang_Class::as_Klass(mirror); 565 int slot = java_lang_reflect_Field::slot(reflected); 566 int modifiers = java_lang_reflect_Field::modifiers(reflected); 567 568 KlassHandle k1(THREAD, k); 569 // Make sure class is initialized before handing id's out to fields 570 k1()->initialize(CHECK_NULL); 571 572 // First check if this is a static field 573 if (modifiers & JVM_ACC_STATIC) { 574 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 575 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset); 576 assert(id != NULL, "corrupt Field object"); 577 debug_only(id->set_is_static_field_id();) 578 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 579 ret = jfieldIDWorkaround::to_static_jfieldID(id); 580 return ret; 581 } 582 583 // The slot is the index of the field description in the field-array 584 // The jfieldID is the offset of the field within the object 585 // It may also have hash bits for k, if VerifyJNIFields is turned on. 586 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 587 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); 588 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); 589 return ret; 590 JNI_END 591 592 #ifndef USDT2 593 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); 594 #else /* USDT2 */ 595 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject 596 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref)); 597 #endif /* USDT2 */ 598 599 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) 600 JNIWrapper("ToReflectedMethod"); 601 #ifndef USDT2 602 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); 603 #else /* USDT2 */ 604 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY( 605 env, cls, (uintptr_t) method_id, isStatic); 606 #endif /* USDT2 */ 607 jobject ret = NULL; 608 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); 609 610 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id)); 611 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); 612 oop reflection_method; 613 if (m->is_initializer()) { 614 reflection_method = Reflection::new_constructor(m, CHECK_NULL); 615 } else { 616 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); 617 } 618 ret = JNIHandles::make_local(env, reflection_method); 619 return ret; 620 JNI_END 621 622 #ifndef USDT2 623 DT_RETURN_MARK_DECL(GetSuperclass, jclass); 624 #else /* USDT2 */ 625 DT_RETURN_MARK_DECL(GetSuperclass, jclass 626 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref)); 627 #endif /* USDT2 */ 628 629 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) 630 JNIWrapper("GetSuperclass"); 631 #ifndef USDT2 632 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); 633 #else /* USDT2 */ 634 HOTSPOT_JNI_GETSUPERCLASS_ENTRY( 635 env, sub); 636 #endif /* USDT2 */ 637 jclass obj = NULL; 638 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); 639 640 oop mirror = JNIHandles::resolve_non_null(sub); 641 // primitive classes return NULL 642 if (java_lang_Class::is_primitive(mirror)) return NULL; 643 644 // Rules of Class.getSuperClass as implemented by KLass::java_super: 645 // arrays return Object 646 // interfaces return NULL 647 // proper classes return Klass::super() 648 Klass* k = java_lang_Class::as_Klass(mirror); 649 if (k->is_interface()) return NULL; 650 651 // return mirror for superclass 652 Klass* super = k->java_super(); 653 // super2 is the value computed by the compiler's getSuperClass intrinsic: 654 debug_only(Klass* super2 = ( k->oop_is_array() 655 ? SystemDictionary::Object_klass() 656 : k->super() ) ); 657 assert(super == super2, 658 "java_super computation depends on interface, array, other super"); 659 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror()); 660 return obj; 661 JNI_END 662 663 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) 664 JNIWrapper("IsSubclassOf"); 665 #ifndef USDT2 666 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); 667 #else /* USDT2 */ 668 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY( 669 env, sub, super); 670 #endif /* USDT2 */ 671 oop sub_mirror = JNIHandles::resolve_non_null(sub); 672 oop super_mirror = JNIHandles::resolve_non_null(super); 673 if (java_lang_Class::is_primitive(sub_mirror) || 674 java_lang_Class::is_primitive(super_mirror)) { 675 jboolean ret = (sub_mirror == super_mirror); 676 #ifndef USDT2 677 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 678 #else /* USDT2 */ 679 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 680 ret); 681 #endif /* USDT2 */ 682 return ret; 683 } 684 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror); 685 Klass* super_klass = java_lang_Class::as_Klass(super_mirror); 686 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom"); 687 jboolean ret = sub_klass->is_subtype_of(super_klass) ? 688 JNI_TRUE : JNI_FALSE; 689 #ifndef USDT2 690 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 691 #else /* USDT2 */ 692 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 693 ret); 694 #endif /* USDT2 */ 695 return ret; 696 JNI_END 697 698 #ifndef USDT2 699 DT_RETURN_MARK_DECL(Throw, jint); 700 #else /* USDT2 */ 701 DT_RETURN_MARK_DECL(Throw, jint 702 , HOTSPOT_JNI_THROW_RETURN(_ret_ref)); 703 #endif /* USDT2 */ 704 705 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) 706 JNIWrapper("Throw"); 707 #ifndef USDT2 708 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); 709 #else /* USDT2 */ 710 HOTSPOT_JNI_THROW_ENTRY( 711 env, obj); 712 #endif /* USDT2 */ 713 jint ret = JNI_OK; 714 DT_RETURN_MARK(Throw, jint, (const jint&)ret); 715 716 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); 717 ShouldNotReachHere(); 718 JNI_END 719 720 #ifndef USDT2 721 DT_RETURN_MARK_DECL(ThrowNew, jint); 722 #else /* USDT2 */ 723 DT_RETURN_MARK_DECL(ThrowNew, jint 724 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref)); 725 #endif /* USDT2 */ 726 727 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) 728 JNIWrapper("ThrowNew"); 729 #ifndef USDT2 730 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); 731 #else /* USDT2 */ 732 HOTSPOT_JNI_THROWNEW_ENTRY( 733 env, clazz, (char *) message); 734 #endif /* USDT2 */ 735 jint ret = JNI_OK; 736 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); 737 738 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 739 Symbol* name = k->name(); 740 Handle class_loader (THREAD, k->class_loader()); 741 Handle protection_domain (THREAD, k->protection_domain()); 742 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); 743 ShouldNotReachHere(); 744 JNI_END 745 746 747 // JNI functions only transform a pending async exception to a synchronous 748 // exception in ExceptionOccurred and ExceptionCheck calls, since 749 // delivering an async exception in other places won't change the native 750 // code's control flow and would be harmful when native code further calls 751 // JNI functions with a pending exception. Async exception is also checked 752 // during the call, so ExceptionOccurred/ExceptionCheck won't return 753 // false but deliver the async exception at the very end during 754 // state transition. 755 756 static void jni_check_async_exceptions(JavaThread *thread) { 757 assert(thread == Thread::current(), "must be itself"); 758 thread->check_and_handle_async_exceptions(); 759 } 760 761 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) 762 JNIWrapper("ExceptionOccurred"); 763 #ifndef USDT2 764 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); 765 #else /* USDT2 */ 766 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY( 767 env); 768 #endif /* USDT2 */ 769 jni_check_async_exceptions(thread); 770 oop exception = thread->pending_exception(); 771 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); 772 #ifndef USDT2 773 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); 774 #else /* USDT2 */ 775 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN( 776 ret); 777 #endif /* USDT2 */ 778 return ret; 779 JNI_END 780 781 782 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) 783 JNIWrapper("ExceptionDescribe"); 784 #ifndef USDT2 785 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); 786 #else /* USDT2 */ 787 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY( 788 env); 789 #endif /* USDT2 */ 790 if (thread->has_pending_exception()) { 791 Handle ex(thread, thread->pending_exception()); 792 thread->clear_pending_exception(); 793 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) { 794 // Don't print anything if we are being killed. 795 } else { 796 jio_fprintf(defaultStream::error_stream(), "Exception "); 797 if (thread != NULL && thread->threadObj() != NULL) { 798 ResourceMark rm(THREAD); 799 jio_fprintf(defaultStream::error_stream(), 800 "in thread \"%s\" ", thread->get_thread_name()); 801 } 802 if (ex->is_a(SystemDictionary::Throwable_klass())) { 803 JavaValue result(T_VOID); 804 JavaCalls::call_virtual(&result, 805 ex, 806 KlassHandle(THREAD, 807 SystemDictionary::Throwable_klass()), 808 vmSymbols::printStackTrace_name(), 809 vmSymbols::void_method_signature(), 810 THREAD); 811 // If an exception is thrown in the call it gets thrown away. Not much 812 // we can do with it. The native code that calls this, does not check 813 // for the exception - hence, it might still be in the thread when DestroyVM gets 814 // called, potentially causing a few asserts to trigger - since no pending exception 815 // is expected. 816 CLEAR_PENDING_EXCEPTION; 817 } else { 818 ResourceMark rm(THREAD); 819 jio_fprintf(defaultStream::error_stream(), 820 ". Uncaught exception of type %s.", 821 ex->klass()->external_name()); 822 } 823 } 824 } 825 #ifndef USDT2 826 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); 827 #else /* USDT2 */ 828 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN( 829 ); 830 #endif /* USDT2 */ 831 JNI_END 832 833 834 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) 835 JNIWrapper("ExceptionClear"); 836 #ifndef USDT2 837 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); 838 #else /* USDT2 */ 839 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY( 840 env); 841 #endif /* USDT2 */ 842 843 // The jni code might be using this API to clear java thrown exception. 844 // So just mark jvmti thread exception state as exception caught. 845 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); 846 if (state != NULL && state->is_exception_detected()) { 847 state->set_exception_caught(); 848 } 849 thread->clear_pending_exception(); 850 #ifndef USDT2 851 DTRACE_PROBE(hotspot_jni, ExceptionClear__return); 852 #else /* USDT2 */ 853 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN( 854 ); 855 #endif /* USDT2 */ 856 JNI_END 857 858 859 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) 860 JNIWrapper("FatalError"); 861 #ifndef USDT2 862 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); 863 #else /* USDT2 */ 864 HOTSPOT_JNI_FATALERROR_ENTRY( 865 env, (char *) msg); 866 #endif /* USDT2 */ 867 tty->print_cr("FATAL ERROR in native method: %s", msg); 868 thread->print_stack(); 869 os::abort(); // Dump core and abort 870 JNI_END 871 872 873 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) 874 JNIWrapper("PushLocalFrame"); 875 #ifndef USDT2 876 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); 877 #else /* USDT2 */ 878 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY( 879 env, capacity); 880 #endif /* USDT2 */ 881 //%note jni_11 882 if (capacity < 0 || capacity > MAX_REASONABLE_LOCAL_CAPACITY) { 883 #ifndef USDT2 884 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); 885 #else /* USDT2 */ 886 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 887 (uint32_t)JNI_ERR); 888 #endif /* USDT2 */ 889 return JNI_ERR; 890 } 891 JNIHandleBlock* old_handles = thread->active_handles(); 892 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 893 assert(new_handles != NULL, "should not be NULL"); 894 new_handles->set_pop_frame_link(old_handles); 895 thread->set_active_handles(new_handles); 896 jint ret = JNI_OK; 897 #ifndef USDT2 898 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); 899 #else /* USDT2 */ 900 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 901 ret); 902 #endif /* USDT2 */ 903 return ret; 904 JNI_END 905 906 907 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) 908 JNIWrapper("PopLocalFrame"); 909 #ifndef USDT2 910 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); 911 #else /* USDT2 */ 912 HOTSPOT_JNI_POPLOCALFRAME_ENTRY( 913 env, result); 914 #endif /* USDT2 */ 915 //%note jni_11 916 Handle result_handle(thread, JNIHandles::resolve(result)); 917 JNIHandleBlock* old_handles = thread->active_handles(); 918 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); 919 if (new_handles != NULL) { 920 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. 921 // This way code will still work if PopLocalFrame is called without a corresponding 922 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise 923 // the release_block call will release the blocks. 924 thread->set_active_handles(new_handles); 925 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below 926 JNIHandleBlock::release_block(old_handles, thread); // may block 927 result = JNIHandles::make_local(thread, result_handle()); 928 } 929 #ifndef USDT2 930 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); 931 #else /* USDT2 */ 932 HOTSPOT_JNI_POPLOCALFRAME_RETURN( 933 result); 934 #endif /* USDT2 */ 935 return result; 936 JNI_END 937 938 939 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) 940 JNIWrapper("NewGlobalRef"); 941 #ifndef USDT2 942 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); 943 #else /* USDT2 */ 944 HOTSPOT_JNI_NEWGLOBALREF_ENTRY( 945 env, ref); 946 #endif /* USDT2 */ 947 Handle ref_handle(thread, JNIHandles::resolve(ref)); 948 jobject ret = JNIHandles::make_global(ref_handle); 949 #ifndef USDT2 950 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); 951 #else /* USDT2 */ 952 HOTSPOT_JNI_NEWGLOBALREF_RETURN( 953 ret); 954 #endif /* USDT2 */ 955 return ret; 956 JNI_END 957 958 // Must be JNI_ENTRY (with HandleMark) 959 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) 960 JNIWrapper("DeleteGlobalRef"); 961 #ifndef USDT2 962 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); 963 #else /* USDT2 */ 964 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY( 965 env, ref); 966 #endif /* USDT2 */ 967 JNIHandles::destroy_global(ref); 968 #ifndef USDT2 969 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); 970 #else /* USDT2 */ 971 HOTSPOT_JNI_DELETEGLOBALREF_RETURN( 972 ); 973 #endif /* USDT2 */ 974 JNI_END 975 976 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) 977 JNIWrapper("DeleteLocalRef"); 978 #ifndef USDT2 979 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); 980 #else /* USDT2 */ 981 HOTSPOT_JNI_DELETELOCALREF_ENTRY( 982 env, obj); 983 #endif /* USDT2 */ 984 JNIHandles::destroy_local(obj); 985 #ifndef USDT2 986 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); 987 #else /* USDT2 */ 988 HOTSPOT_JNI_DELETELOCALREF_RETURN( 989 ); 990 #endif /* USDT2 */ 991 JNI_END 992 993 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) 994 JNIWrapper("IsSameObject"); 995 #ifndef USDT2 996 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); 997 #else /* USDT2 */ 998 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY( 999 env, r1, r2); 1000 #endif /* USDT2 */ 1001 oop a = JNIHandles::resolve(r1); 1002 oop b = JNIHandles::resolve(r2); 1003 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; 1004 #ifndef USDT2 1005 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); 1006 #else /* USDT2 */ 1007 HOTSPOT_JNI_ISSAMEOBJECT_RETURN( 1008 ret); 1009 #endif /* USDT2 */ 1010 return ret; 1011 JNI_END 1012 1013 1014 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) 1015 JNIWrapper("NewLocalRef"); 1016 #ifndef USDT2 1017 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); 1018 #else /* USDT2 */ 1019 HOTSPOT_JNI_NEWLOCALREF_ENTRY( 1020 env, ref); 1021 #endif /* USDT2 */ 1022 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); 1023 #ifndef USDT2 1024 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); 1025 #else /* USDT2 */ 1026 HOTSPOT_JNI_NEWLOCALREF_RETURN( 1027 ret); 1028 #endif /* USDT2 */ 1029 return ret; 1030 JNI_END 1031 1032 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) 1033 JNIWrapper("EnsureLocalCapacity"); 1034 #ifndef USDT2 1035 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); 1036 #else /* USDT2 */ 1037 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY( 1038 env, capacity); 1039 #endif /* USDT2 */ 1040 jint ret; 1041 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) { 1042 ret = JNI_OK; 1043 } else { 1044 ret = JNI_ERR; 1045 } 1046 #ifndef USDT2 1047 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); 1048 #else /* USDT2 */ 1049 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN( 1050 ret); 1051 #endif /* USDT2 */ 1052 return ret; 1053 JNI_END 1054 1055 // Return the Handle Type 1056 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) 1057 JNIWrapper("GetObjectRefType"); 1058 #ifndef USDT2 1059 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); 1060 #else /* USDT2 */ 1061 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY( 1062 env, obj); 1063 #endif /* USDT2 */ 1064 jobjectRefType ret; 1065 if (JNIHandles::is_local_handle(thread, obj) || 1066 JNIHandles::is_frame_handle(thread, obj)) 1067 ret = JNILocalRefType; 1068 else if (JNIHandles::is_global_handle(obj)) 1069 ret = JNIGlobalRefType; 1070 else if (JNIHandles::is_weak_global_handle(obj)) 1071 ret = JNIWeakGlobalRefType; 1072 else 1073 ret = JNIInvalidRefType; 1074 #ifndef USDT2 1075 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); 1076 #else /* USDT2 */ 1077 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN( 1078 (void *) ret); 1079 #endif /* USDT2 */ 1080 return ret; 1081 JNI_END 1082 1083 1084 class JNI_ArgumentPusher : public SignatureIterator { 1085 protected: 1086 JavaCallArguments* _arguments; 1087 1088 virtual void get_bool () = 0; 1089 virtual void get_char () = 0; 1090 virtual void get_short () = 0; 1091 virtual void get_byte () = 0; 1092 virtual void get_int () = 0; 1093 virtual void get_long () = 0; 1094 virtual void get_float () = 0; 1095 virtual void get_double () = 0; 1096 virtual void get_object () = 0; 1097 1098 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) { 1099 this->_return_type = T_ILLEGAL; 1100 _arguments = NULL; 1101 } 1102 1103 public: 1104 virtual void iterate( uint64_t fingerprint ) = 0; 1105 1106 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } 1107 1108 inline void do_bool() { if (!is_return_type()) get_bool(); } 1109 inline void do_char() { if (!is_return_type()) get_char(); } 1110 inline void do_short() { if (!is_return_type()) get_short(); } 1111 inline void do_byte() { if (!is_return_type()) get_byte(); } 1112 inline void do_int() { if (!is_return_type()) get_int(); } 1113 inline void do_long() { if (!is_return_type()) get_long(); } 1114 inline void do_float() { if (!is_return_type()) get_float(); } 1115 inline void do_double() { if (!is_return_type()) get_double(); } 1116 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } 1117 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array 1118 inline void do_void() { } 1119 1120 JavaCallArguments* arguments() { return _arguments; } 1121 void push_receiver(Handle h) { _arguments->push_oop(h); } 1122 }; 1123 1124 1125 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { 1126 protected: 1127 va_list _ap; 1128 1129 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg 1130 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg 1131 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg 1132 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg 1133 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } 1134 1135 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests 1136 1137 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } 1138 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg 1139 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } 1140 inline void get_object() { jobject l = va_arg(_ap, jobject); 1141 _arguments->push_oop(Handle((oop *)l, false)); } 1142 1143 inline void set_ap(va_list rap) { 1144 #ifdef va_copy 1145 va_copy(_ap, rap); 1146 #elif defined (__va_copy) 1147 __va_copy(_ap, rap); 1148 #else 1149 _ap = rap; 1150 #endif 1151 } 1152 1153 public: 1154 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap) 1155 : JNI_ArgumentPusher(signature) { 1156 set_ap(rap); 1157 } 1158 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap) 1159 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1160 set_ap(rap); 1161 } 1162 1163 // Optimized path if we have the bitvector form of signature 1164 void iterate( uint64_t fingerprint ) { 1165 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments 1166 else { 1167 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1168 result_feature_mask); 1169 1170 assert(fingerprint, "Fingerprint should not be 0"); 1171 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1172 while ( 1 ) { 1173 switch ( fingerprint & parameter_feature_mask ) { 1174 case bool_parm: 1175 case char_parm: 1176 case short_parm: 1177 case byte_parm: 1178 case int_parm: 1179 get_int(); 1180 break; 1181 case obj_parm: 1182 get_object(); 1183 break; 1184 case long_parm: 1185 get_long(); 1186 break; 1187 case float_parm: 1188 get_float(); 1189 break; 1190 case double_parm: 1191 get_double(); 1192 break; 1193 case done_parm: 1194 return; 1195 break; 1196 default: 1197 ShouldNotReachHere(); 1198 break; 1199 } 1200 fingerprint >>= parameter_feature_size; 1201 } 1202 } 1203 } 1204 }; 1205 1206 1207 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { 1208 protected: 1209 const jvalue *_ap; 1210 1211 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); } 1212 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } 1213 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } 1214 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } 1215 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } 1216 1217 inline void get_long() { _arguments->push_long((_ap++)->j); } 1218 inline void get_float() { _arguments->push_float((_ap++)->f); } 1219 inline void get_double() { _arguments->push_double((_ap++)->d);} 1220 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } 1221 1222 inline void set_ap(const jvalue *rap) { _ap = rap; } 1223 1224 public: 1225 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap) 1226 : JNI_ArgumentPusher(signature) { 1227 set_ap(rap); 1228 } 1229 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap) 1230 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1231 set_ap(rap); 1232 } 1233 1234 // Optimized path if we have the bitvector form of signature 1235 void iterate( uint64_t fingerprint ) { 1236 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments 1237 else { 1238 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1239 result_feature_mask); 1240 assert(fingerprint, "Fingerprint should not be 0"); 1241 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1242 while ( 1 ) { 1243 switch ( fingerprint & parameter_feature_mask ) { 1244 case bool_parm: 1245 get_bool(); 1246 break; 1247 case char_parm: 1248 get_char(); 1249 break; 1250 case short_parm: 1251 get_short(); 1252 break; 1253 case byte_parm: 1254 get_byte(); 1255 break; 1256 case int_parm: 1257 get_int(); 1258 break; 1259 case obj_parm: 1260 get_object(); 1261 break; 1262 case long_parm: 1263 get_long(); 1264 break; 1265 case float_parm: 1266 get_float(); 1267 break; 1268 case double_parm: 1269 get_double(); 1270 break; 1271 case done_parm: 1272 return; 1273 break; 1274 default: 1275 ShouldNotReachHere(); 1276 break; 1277 } 1278 fingerprint >>= parameter_feature_size; 1279 } 1280 } 1281 } 1282 }; 1283 1284 1285 enum JNICallType { 1286 JNI_STATIC, 1287 JNI_VIRTUAL, 1288 JNI_NONVIRTUAL 1289 }; 1290 1291 1292 1293 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1294 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id)); 1295 1296 // Create object to hold arguments for the JavaCall, and associate it with 1297 // the jni parser 1298 ResourceMark rm(THREAD); 1299 int number_of_parameters = method->size_of_parameters(); 1300 JavaCallArguments java_args(number_of_parameters); 1301 args->set_java_argument_object(&java_args); 1302 1303 assert(method->is_static(), "method should be static"); 1304 1305 // Fill out JavaCallArguments object 1306 args->iterate( Fingerprinter(method).fingerprint() ); 1307 // Initialize result type 1308 result->set_type(args->get_ret_type()); 1309 1310 // Invoke the method. Result is returned as oop. 1311 JavaCalls::call(result, method, &java_args, CHECK); 1312 1313 // Convert result 1314 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1315 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1316 } 1317 } 1318 1319 1320 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1321 oop recv = JNIHandles::resolve(receiver); 1322 if (recv == NULL) { 1323 THROW(vmSymbols::java_lang_NullPointerException()); 1324 } 1325 Handle h_recv(THREAD, recv); 1326 1327 int number_of_parameters; 1328 Method* selected_method; 1329 { 1330 Method* m = Method::resolve_jmethod_id(method_id); 1331 number_of_parameters = m->size_of_parameters(); 1332 Klass* holder = m->method_holder(); 1333 if (!(holder)->is_interface()) { 1334 // non-interface call -- for that little speed boost, don't handlize 1335 debug_only(No_Safepoint_Verifier nosafepoint;) 1336 if (call_type == JNI_VIRTUAL) { 1337 // jni_GetMethodID makes sure class is linked and initialized 1338 // so m should have a valid vtable index. 1339 assert(!m->has_itable_index(), ""); 1340 int vtbl_index = m->vtable_index(); 1341 if (vtbl_index != Method::nonvirtual_vtable_index) { 1342 Klass* k = h_recv->klass(); 1343 // k might be an arrayKlassOop but all vtables start at 1344 // the same place. The cast is to avoid virtual call and assertion. 1345 InstanceKlass *ik = (InstanceKlass*)k; 1346 selected_method = ik->method_at_vtable(vtbl_index); 1347 } else { 1348 // final method 1349 selected_method = m; 1350 } 1351 } else { 1352 // JNI_NONVIRTUAL call 1353 selected_method = m; 1354 } 1355 } else { 1356 // interface call 1357 KlassHandle h_holder(THREAD, holder); 1358 1359 if (call_type == JNI_VIRTUAL) { 1360 int itbl_index = m->itable_index(); 1361 Klass* k = h_recv->klass(); 1362 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); 1363 } else { 1364 selected_method = m; 1365 } 1366 } 1367 } 1368 1369 methodHandle method(THREAD, selected_method); 1370 1371 // Create object to hold arguments for the JavaCall, and associate it with 1372 // the jni parser 1373 ResourceMark rm(THREAD); 1374 JavaCallArguments java_args(number_of_parameters); 1375 args->set_java_argument_object(&java_args); 1376 1377 // handle arguments 1378 assert(!method->is_static(), "method should not be static"); 1379 args->push_receiver(h_recv); // Push jobject handle 1380 1381 // Fill out JavaCallArguments object 1382 args->iterate( Fingerprinter(method).fingerprint() ); 1383 // Initialize result type 1384 result->set_type(args->get_ret_type()); 1385 1386 // Invoke the method. Result is returned as oop. 1387 JavaCalls::call(result, method, &java_args, CHECK); 1388 1389 // Convert result 1390 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1391 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1392 } 1393 } 1394 1395 1396 static instanceOop alloc_object(jclass clazz, TRAPS) { 1397 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1398 k()->check_valid_for_instantiation(false, CHECK_NULL); 1399 InstanceKlass::cast(k())->initialize(CHECK_NULL); 1400 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD); 1401 return ih; 1402 } 1403 1404 #ifndef USDT2 1405 DT_RETURN_MARK_DECL(AllocObject, jobject); 1406 #else /* USDT2 */ 1407 DT_RETURN_MARK_DECL(AllocObject, jobject 1408 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref)); 1409 #endif /* USDT2 */ 1410 1411 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) 1412 JNIWrapper("AllocObject"); 1413 1414 #ifndef USDT2 1415 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); 1416 #else /* USDT2 */ 1417 HOTSPOT_JNI_ALLOCOBJECT_ENTRY( 1418 env, clazz); 1419 #endif /* USDT2 */ 1420 jobject ret = NULL; 1421 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); 1422 1423 instanceOop i = alloc_object(clazz, CHECK_NULL); 1424 ret = JNIHandles::make_local(env, i); 1425 return ret; 1426 JNI_END 1427 1428 #ifndef USDT2 1429 DT_RETURN_MARK_DECL(NewObjectA, jobject); 1430 #else /* USDT2 */ 1431 DT_RETURN_MARK_DECL(NewObjectA, jobject 1432 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref)); 1433 #endif /* USDT2 */ 1434 1435 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) 1436 JNIWrapper("NewObjectA"); 1437 #ifndef USDT2 1438 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); 1439 #else /* USDT2 */ 1440 HOTSPOT_JNI_NEWOBJECTA_ENTRY( 1441 env, clazz, (uintptr_t) methodID); 1442 #endif /* USDT2 */ 1443 jobject obj = NULL; 1444 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); 1445 1446 instanceOop i = alloc_object(clazz, CHECK_NULL); 1447 obj = JNIHandles::make_local(env, i); 1448 JavaValue jvalue(T_VOID); 1449 JNI_ArgumentPusherArray ap(methodID, args); 1450 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1451 return obj; 1452 JNI_END 1453 1454 #ifndef USDT2 1455 DT_RETURN_MARK_DECL(NewObjectV, jobject); 1456 #else /* USDT2 */ 1457 DT_RETURN_MARK_DECL(NewObjectV, jobject 1458 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref)); 1459 #endif /* USDT2 */ 1460 1461 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) 1462 JNIWrapper("NewObjectV"); 1463 #ifndef USDT2 1464 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); 1465 #else /* USDT2 */ 1466 HOTSPOT_JNI_NEWOBJECTV_ENTRY( 1467 env, clazz, (uintptr_t) methodID); 1468 #endif /* USDT2 */ 1469 jobject obj = NULL; 1470 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); 1471 1472 instanceOop i = alloc_object(clazz, CHECK_NULL); 1473 obj = JNIHandles::make_local(env, i); 1474 JavaValue jvalue(T_VOID); 1475 JNI_ArgumentPusherVaArg ap(methodID, args); 1476 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1477 return obj; 1478 JNI_END 1479 1480 #ifndef USDT2 1481 DT_RETURN_MARK_DECL(NewObject, jobject); 1482 #else /* USDT2 */ 1483 DT_RETURN_MARK_DECL(NewObject, jobject 1484 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref)); 1485 #endif /* USDT2 */ 1486 1487 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) 1488 JNIWrapper("NewObject"); 1489 #ifndef USDT2 1490 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); 1491 #else /* USDT2 */ 1492 HOTSPOT_JNI_NEWOBJECT_ENTRY( 1493 env, clazz, (uintptr_t) methodID); 1494 #endif /* USDT2 */ 1495 jobject obj = NULL; 1496 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); 1497 1498 instanceOop i = alloc_object(clazz, CHECK_NULL); 1499 obj = JNIHandles::make_local(env, i); 1500 va_list args; 1501 va_start(args, methodID); 1502 JavaValue jvalue(T_VOID); 1503 JNI_ArgumentPusherVaArg ap(methodID, args); 1504 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1505 va_end(args); 1506 return obj; 1507 JNI_END 1508 1509 1510 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) 1511 JNIWrapper("GetObjectClass"); 1512 #ifndef USDT2 1513 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); 1514 #else /* USDT2 */ 1515 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY( 1516 env, obj); 1517 #endif /* USDT2 */ 1518 Klass* k = JNIHandles::resolve_non_null(obj)->klass(); 1519 jclass ret = 1520 (jclass) JNIHandles::make_local(env, k->java_mirror()); 1521 #ifndef USDT2 1522 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); 1523 #else /* USDT2 */ 1524 HOTSPOT_JNI_GETOBJECTCLASS_RETURN( 1525 ret); 1526 #endif /* USDT2 */ 1527 return ret; 1528 JNI_END 1529 1530 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) 1531 JNIWrapper("IsInstanceOf"); 1532 #ifndef USDT2 1533 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); 1534 #else /* USDT2 */ 1535 HOTSPOT_JNI_ISINSTANCEOF_ENTRY( 1536 env, obj, clazz); 1537 #endif /* USDT2 */ 1538 jboolean ret = JNI_TRUE; 1539 if (obj != NULL) { 1540 ret = JNI_FALSE; 1541 Klass* k = java_lang_Class::as_Klass( 1542 JNIHandles::resolve_non_null(clazz)); 1543 if (k != NULL) { 1544 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; 1545 } 1546 } 1547 #ifndef USDT2 1548 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); 1549 #else /* USDT2 */ 1550 HOTSPOT_JNI_ISINSTANCEOF_RETURN( 1551 ret); 1552 #endif /* USDT2 */ 1553 return ret; 1554 JNI_END 1555 1556 1557 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, 1558 const char *sig, bool is_static, TRAPS) { 1559 // %%%% This code should probably just call into a method in the LinkResolver 1560 // 1561 // The class should have been loaded (we have an instance of the class 1562 // passed in) so the method and signature should already be in the symbol 1563 // table. If they're not there, the method doesn't exist. 1564 const char *name_to_probe = (name_str == NULL) 1565 ? vmSymbols::object_initializer_name()->as_C_string() 1566 : name_str; 1567 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe)); 1568 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig)); 1569 1570 if (name == NULL || signature == NULL) { 1571 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1572 } 1573 1574 // Throw a NoSuchMethodError exception if we have an instance of a 1575 // primitive java.lang.Class 1576 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { 1577 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1578 } 1579 1580 KlassHandle klass(THREAD, 1581 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1582 1583 // Make sure class is linked and initialized before handing id's out to 1584 // Method*s. 1585 klass()->initialize(CHECK_NULL); 1586 1587 Method* m; 1588 if (name == vmSymbols::object_initializer_name() || 1589 name == vmSymbols::class_initializer_name()) { 1590 // Never search superclasses for constructors 1591 if (klass->oop_is_instance()) { 1592 m = InstanceKlass::cast(klass())->find_method(name, signature); 1593 } else { 1594 m = NULL; 1595 } 1596 } else { 1597 m = klass->lookup_method(name, signature); 1598 if (m == NULL && klass->oop_is_instance()) { 1599 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature); 1600 } 1601 } 1602 if (m == NULL || (m->is_static() != is_static)) { 1603 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1604 } 1605 return m->jmethod_id(); 1606 } 1607 1608 1609 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, 1610 const char *name, const char *sig)) 1611 JNIWrapper("GetMethodID"); 1612 #ifndef USDT2 1613 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); 1614 #else /* USDT2 */ 1615 HOTSPOT_JNI_GETMETHODID_ENTRY( 1616 env, clazz, (char *) name, (char *) sig); 1617 #endif /* USDT2 */ 1618 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); 1619 #ifndef USDT2 1620 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); 1621 #else /* USDT2 */ 1622 HOTSPOT_JNI_GETMETHODID_RETURN( 1623 (uintptr_t) ret); 1624 #endif /* USDT2 */ 1625 return ret; 1626 JNI_END 1627 1628 1629 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, 1630 const char *name, const char *sig)) 1631 JNIWrapper("GetStaticMethodID"); 1632 #ifndef USDT2 1633 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); 1634 #else /* USDT2 */ 1635 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY( 1636 env, (char *) clazz, (char *) name, (char *)sig); 1637 #endif /* USDT2 */ 1638 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); 1639 #ifndef USDT2 1640 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); 1641 #else /* USDT2 */ 1642 HOTSPOT_JNI_GETSTATICMETHODID_RETURN( 1643 (uintptr_t) ret); 1644 #endif /* USDT2 */ 1645 return ret; 1646 JNI_END 1647 1648 1649 1650 // 1651 // Calling Methods 1652 // 1653 1654 #ifndef USDT2 1655 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ 1656 \ 1657 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ 1658 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ 1659 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ 1660 \ 1661 JNI_ENTRY(ResultType, \ 1662 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1663 JNIWrapper("Call" XSTR(Result) "Method"); \ 1664 \ 1665 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \ 1666 ResultType ret = 0;\ 1667 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1668 (const ResultType&)ret);\ 1669 \ 1670 va_list args; \ 1671 va_start(args, methodID); \ 1672 JavaValue jvalue(Tag); \ 1673 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1674 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1675 va_end(args); \ 1676 ret = jvalue.get_##ResultType(); \ 1677 return ret;\ 1678 JNI_END \ 1679 \ 1680 \ 1681 JNI_ENTRY(ResultType, \ 1682 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1683 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1684 \ 1685 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \ 1686 ResultType ret = 0;\ 1687 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1688 (const ResultType&)ret);\ 1689 \ 1690 JavaValue jvalue(Tag); \ 1691 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1692 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1693 ret = jvalue.get_##ResultType(); \ 1694 return ret;\ 1695 JNI_END \ 1696 \ 1697 \ 1698 JNI_ENTRY(ResultType, \ 1699 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1700 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1701 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \ 1702 ResultType ret = 0;\ 1703 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1704 (const ResultType&)ret);\ 1705 \ 1706 JavaValue jvalue(Tag); \ 1707 JNI_ArgumentPusherArray ap(methodID, args); \ 1708 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1709 ret = jvalue.get_##ResultType(); \ 1710 return ret;\ 1711 JNI_END 1712 1713 // the runtime type of subword integral basic types is integer 1714 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) 1715 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) 1716 DEFINE_CALLMETHOD(jchar, Char, T_CHAR) 1717 DEFINE_CALLMETHOD(jshort, Short, T_SHORT) 1718 1719 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) 1720 DEFINE_CALLMETHOD(jint, Int, T_INT) 1721 DEFINE_CALLMETHOD(jlong, Long, T_LONG) 1722 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) 1723 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) 1724 1725 DT_VOID_RETURN_MARK_DECL(CallVoidMethod); 1726 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); 1727 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); 1728 1729 #else /* USDT2 */ 1730 1731 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \ 1732 , EntryProbe, ReturnProbe) \ 1733 \ 1734 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \ 1735 , ReturnProbe); \ 1736 \ 1737 JNI_ENTRY(ResultType, \ 1738 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1739 JNIWrapper("Call" XSTR(Result) "Method"); \ 1740 \ 1741 EntryProbe; \ 1742 ResultType ret = 0;\ 1743 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1744 (const ResultType&)ret);\ 1745 \ 1746 va_list args; \ 1747 va_start(args, methodID); \ 1748 JavaValue jvalue(Tag); \ 1749 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1750 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1751 va_end(args); \ 1752 ret = jvalue.get_##ResultType(); \ 1753 return ret;\ 1754 JNI_END 1755 1756 // the runtime type of subword integral basic types is integer 1757 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN 1758 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1759 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1760 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE 1761 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1762 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1763 DEFINE_CALLMETHOD(jchar, Char, T_CHAR 1764 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1765 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1766 DEFINE_CALLMETHOD(jshort, Short, T_SHORT 1767 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1768 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1769 1770 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT 1771 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1772 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1773 DEFINE_CALLMETHOD(jint, Int, T_INT, 1774 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1775 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1776 DEFINE_CALLMETHOD(jlong, Long, T_LONG 1777 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1778 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1779 // Float and double probes don't return value because dtrace doesn't currently support it 1780 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT 1781 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1782 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1783 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE 1784 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1785 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1786 1787 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \ 1788 , EntryProbe, ReturnProbe) \ 1789 \ 1790 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \ 1791 , ReturnProbe); \ 1792 \ 1793 JNI_ENTRY(ResultType, \ 1794 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1795 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1796 \ 1797 EntryProbe;\ 1798 ResultType ret = 0;\ 1799 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1800 (const ResultType&)ret);\ 1801 \ 1802 JavaValue jvalue(Tag); \ 1803 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1804 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1805 ret = jvalue.get_##ResultType(); \ 1806 return ret;\ 1807 JNI_END 1808 1809 // the runtime type of subword integral basic types is integer 1810 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN 1811 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1812 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1813 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE 1814 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1815 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1816 DEFINE_CALLMETHODV(jchar, Char, T_CHAR 1817 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1818 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1819 DEFINE_CALLMETHODV(jshort, Short, T_SHORT 1820 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1821 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1822 1823 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT 1824 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1825 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1826 DEFINE_CALLMETHODV(jint, Int, T_INT, 1827 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1828 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1829 DEFINE_CALLMETHODV(jlong, Long, T_LONG 1830 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1831 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1832 // Float and double probes don't return value because dtrace doesn't currently support it 1833 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT 1834 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1835 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1836 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE 1837 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1838 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1839 1840 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \ 1841 , EntryProbe, ReturnProbe) \ 1842 \ 1843 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \ 1844 , ReturnProbe); \ 1845 \ 1846 JNI_ENTRY(ResultType, \ 1847 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1848 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1849 EntryProbe; \ 1850 ResultType ret = 0;\ 1851 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1852 (const ResultType&)ret);\ 1853 \ 1854 JavaValue jvalue(Tag); \ 1855 JNI_ArgumentPusherArray ap(methodID, args); \ 1856 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1857 ret = jvalue.get_##ResultType(); \ 1858 return ret;\ 1859 JNI_END 1860 1861 // the runtime type of subword integral basic types is integer 1862 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN 1863 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1864 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1865 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE 1866 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1867 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1868 DEFINE_CALLMETHODA(jchar, Char, T_CHAR 1869 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1870 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1871 DEFINE_CALLMETHODA(jshort, Short, T_SHORT 1872 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1873 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1874 1875 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT 1876 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1877 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1878 DEFINE_CALLMETHODA(jint, Int, T_INT, 1879 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1880 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1881 DEFINE_CALLMETHODA(jlong, Long, T_LONG 1882 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1883 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1884 // Float and double probes don't return value because dtrace doesn't currently support it 1885 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT 1886 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1887 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1888 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE 1889 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1890 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1891 1892 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN()); 1893 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN()); 1894 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN()); 1895 1896 #endif /* USDT2 */ 1897 1898 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) 1899 JNIWrapper("CallVoidMethod"); 1900 #ifndef USDT2 1901 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); 1902 #else /* USDT2 */ 1903 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY( 1904 env, obj, (uintptr_t) methodID); 1905 #endif /* USDT2 */ 1906 DT_VOID_RETURN_MARK(CallVoidMethod); 1907 1908 va_list args; 1909 va_start(args, methodID); 1910 JavaValue jvalue(T_VOID); 1911 JNI_ArgumentPusherVaArg ap(methodID, args); 1912 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1913 va_end(args); 1914 JNI_END 1915 1916 1917 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) 1918 JNIWrapper("CallVoidMethodV"); 1919 #ifndef USDT2 1920 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); 1921 #else /* USDT2 */ 1922 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY( 1923 env, obj, (uintptr_t) methodID); 1924 #endif /* USDT2 */ 1925 DT_VOID_RETURN_MARK(CallVoidMethodV); 1926 1927 JavaValue jvalue(T_VOID); 1928 JNI_ArgumentPusherVaArg ap(methodID, args); 1929 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1930 JNI_END 1931 1932 1933 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) 1934 JNIWrapper("CallVoidMethodA"); 1935 #ifndef USDT2 1936 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); 1937 #else /* USDT2 */ 1938 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY( 1939 env, obj, (uintptr_t) methodID); 1940 #endif /* USDT2 */ 1941 DT_VOID_RETURN_MARK(CallVoidMethodA); 1942 1943 JavaValue jvalue(T_VOID); 1944 JNI_ArgumentPusherArray ap(methodID, args); 1945 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1946 JNI_END 1947 1948 1949 #ifndef USDT2 1950 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ 1951 \ 1952 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ 1953 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ 1954 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ 1955 \ 1956 JNI_ENTRY(ResultType, \ 1957 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1958 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1959 \ 1960 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ 1961 ResultType ret;\ 1962 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1963 (const ResultType&)ret);\ 1964 \ 1965 va_list args; \ 1966 va_start(args, methodID); \ 1967 JavaValue jvalue(Tag); \ 1968 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1969 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1970 va_end(args); \ 1971 ret = jvalue.get_##ResultType(); \ 1972 return ret;\ 1973 JNI_END \ 1974 \ 1975 JNI_ENTRY(ResultType, \ 1976 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 1977 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ 1978 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ 1979 ResultType ret;\ 1980 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 1981 (const ResultType&)ret);\ 1982 \ 1983 JavaValue jvalue(Tag); \ 1984 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1985 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1986 ret = jvalue.get_##ResultType(); \ 1987 return ret;\ 1988 JNI_END \ 1989 \ 1990 JNI_ENTRY(ResultType, \ 1991 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 1992 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 1993 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ 1994 ResultType ret;\ 1995 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 1996 (const ResultType&)ret);\ 1997 \ 1998 JavaValue jvalue(Tag); \ 1999 JNI_ArgumentPusherArray ap(methodID, args); \ 2000 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2001 ret = jvalue.get_##ResultType(); \ 2002 return ret;\ 2003 JNI_END 2004 2005 // the runtime type of subword integral basic types is integer 2006 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) 2007 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) 2008 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) 2009 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) 2010 2011 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) 2012 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) 2013 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) 2014 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) 2015 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) 2016 2017 2018 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); 2019 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); 2020 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); 2021 2022 #else /* USDT2 */ 2023 2024 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \ 2025 , EntryProbe, ReturnProbe) \ 2026 \ 2027 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \ 2028 , ReturnProbe);\ 2029 \ 2030 JNI_ENTRY(ResultType, \ 2031 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 2032 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 2033 \ 2034 EntryProbe;\ 2035 ResultType ret;\ 2036 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 2037 (const ResultType&)ret);\ 2038 \ 2039 va_list args; \ 2040 va_start(args, methodID); \ 2041 JavaValue jvalue(Tag); \ 2042 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2043 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2044 va_end(args); \ 2045 ret = jvalue.get_##ResultType(); \ 2046 return ret;\ 2047 JNI_END 2048 2049 // the runtime type of subword integral basic types is integer 2050 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN 2051 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2052 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref)) 2053 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE 2054 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2055 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref)) 2056 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR 2057 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2058 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref)) 2059 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT 2060 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2061 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref)) 2062 2063 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT 2064 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2065 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref)) 2066 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT 2067 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2068 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref)) 2069 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG 2070 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2071 // Float and double probes don't return value because dtrace doesn't currently support it 2072 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref)) 2073 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT 2074 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2075 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN()) 2076 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE 2077 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2078 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN()) 2079 2080 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \ 2081 , EntryProbe, ReturnProbe) \ 2082 \ 2083 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \ 2084 , ReturnProbe);\ 2085 \ 2086 JNI_ENTRY(ResultType, \ 2087 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2088 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \ 2089 \ 2090 EntryProbe;\ 2091 ResultType ret;\ 2092 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2093 (const ResultType&)ret);\ 2094 \ 2095 JavaValue jvalue(Tag); \ 2096 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2097 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2098 ret = jvalue.get_##ResultType(); \ 2099 return ret;\ 2100 JNI_END 2101 2102 // the runtime type of subword integral basic types is integer 2103 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN 2104 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2105 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref)) 2106 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE 2107 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2108 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref)) 2109 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR 2110 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2111 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref)) 2112 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT 2113 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2114 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref)) 2115 2116 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT 2117 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2118 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref)) 2119 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT 2120 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2121 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref)) 2122 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG 2123 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2124 // Float and double probes don't return value because dtrace doesn't currently support it 2125 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref)) 2126 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT 2127 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2128 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN()) 2129 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE 2130 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2131 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN()) 2132 2133 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \ 2134 , EntryProbe, ReturnProbe) \ 2135 \ 2136 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \ 2137 , ReturnProbe);\ 2138 \ 2139 JNI_ENTRY(ResultType, \ 2140 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2141 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2142 \ 2143 EntryProbe;\ 2144 ResultType ret;\ 2145 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2146 (const ResultType&)ret);\ 2147 \ 2148 JavaValue jvalue(Tag); \ 2149 JNI_ArgumentPusherArray ap(methodID, args); \ 2150 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2151 ret = jvalue.get_##ResultType(); \ 2152 return ret;\ 2153 JNI_END 2154 2155 // the runtime type of subword integral basic types is integer 2156 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN 2157 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2158 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref)) 2159 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE 2160 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2161 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref)) 2162 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR 2163 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2164 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref)) 2165 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT 2166 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2167 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref)) 2168 2169 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT 2170 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2171 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref)) 2172 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT 2173 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2174 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref)) 2175 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG 2176 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2177 // Float and double probes don't return value because dtrace doesn't currently support it 2178 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref)) 2179 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT 2180 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2181 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN()) 2182 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE 2183 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2184 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN()) 2185 2186 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod 2187 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN()); 2188 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV 2189 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN()); 2190 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA 2191 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN()); 2192 #endif /* USDT2 */ 2193 2194 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) 2195 JNIWrapper("CallNonvirtualVoidMethod"); 2196 2197 #ifndef USDT2 2198 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, 2199 env, obj, cls, methodID); 2200 #else /* USDT2 */ 2201 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY( 2202 env, obj, cls, (uintptr_t) methodID); 2203 #endif /* USDT2 */ 2204 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); 2205 2206 va_list args; 2207 va_start(args, methodID); 2208 JavaValue jvalue(T_VOID); 2209 JNI_ArgumentPusherVaArg ap(methodID, args); 2210 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2211 va_end(args); 2212 JNI_END 2213 2214 2215 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) 2216 JNIWrapper("CallNonvirtualVoidMethodV"); 2217 2218 #ifndef USDT2 2219 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, 2220 env, obj, cls, methodID); 2221 #else /* USDT2 */ 2222 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY( 2223 env, obj, cls, (uintptr_t) methodID); 2224 #endif /* USDT2 */ 2225 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); 2226 2227 JavaValue jvalue(T_VOID); 2228 JNI_ArgumentPusherVaArg ap(methodID, args); 2229 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2230 JNI_END 2231 2232 2233 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) 2234 JNIWrapper("CallNonvirtualVoidMethodA"); 2235 #ifndef USDT2 2236 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, 2237 env, obj, cls, methodID); 2238 #else /* USDT2 */ 2239 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY( 2240 env, obj, cls, (uintptr_t) methodID); 2241 #endif /* USDT2 */ 2242 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); 2243 JavaValue jvalue(T_VOID); 2244 JNI_ArgumentPusherArray ap(methodID, args); 2245 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2246 JNI_END 2247 2248 2249 #ifndef USDT2 2250 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ 2251 \ 2252 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ 2253 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ 2254 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ 2255 \ 2256 JNI_ENTRY(ResultType, \ 2257 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2258 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2259 \ 2260 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ 2261 ResultType ret = 0;\ 2262 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2263 (const ResultType&)ret);\ 2264 \ 2265 va_list args; \ 2266 va_start(args, methodID); \ 2267 JavaValue jvalue(Tag); \ 2268 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2269 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2270 va_end(args); \ 2271 ret = jvalue.get_##ResultType(); \ 2272 return ret;\ 2273 JNI_END \ 2274 \ 2275 JNI_ENTRY(ResultType, \ 2276 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2277 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2278 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ 2279 ResultType ret = 0;\ 2280 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2281 (const ResultType&)ret);\ 2282 \ 2283 JavaValue jvalue(Tag); \ 2284 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2285 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2286 ret = jvalue.get_##ResultType(); \ 2287 return ret;\ 2288 JNI_END \ 2289 \ 2290 JNI_ENTRY(ResultType, \ 2291 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2292 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2293 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ 2294 ResultType ret = 0;\ 2295 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2296 (const ResultType&)ret);\ 2297 \ 2298 JavaValue jvalue(Tag); \ 2299 JNI_ArgumentPusherArray ap(methodID, args); \ 2300 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2301 ret = jvalue.get_##ResultType(); \ 2302 return ret;\ 2303 JNI_END 2304 2305 // the runtime type of subword integral basic types is integer 2306 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) 2307 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) 2308 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) 2309 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) 2310 2311 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) 2312 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) 2313 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) 2314 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) 2315 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) 2316 2317 2318 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); 2319 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); 2320 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); 2321 2322 #else /* USDT2 */ 2323 2324 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \ 2325 , EntryProbe, ResultProbe) \ 2326 \ 2327 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \ 2328 , ResultProbe); \ 2329 \ 2330 JNI_ENTRY(ResultType, \ 2331 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2332 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2333 \ 2334 EntryProbe; \ 2335 ResultType ret = 0;\ 2336 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2337 (const ResultType&)ret);\ 2338 \ 2339 va_list args; \ 2340 va_start(args, methodID); \ 2341 JavaValue jvalue(Tag); \ 2342 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2343 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2344 va_end(args); \ 2345 ret = jvalue.get_##ResultType(); \ 2346 return ret;\ 2347 JNI_END 2348 2349 // the runtime type of subword integral basic types is integer 2350 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN 2351 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2352 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref)); 2353 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE 2354 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2355 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref)); 2356 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR 2357 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2358 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref)); 2359 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT 2360 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2361 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref)); 2362 2363 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT 2364 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2365 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref)); 2366 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT 2367 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2368 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref)); 2369 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG 2370 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2371 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref)); 2372 // Float and double probes don't return value because dtrace doesn't currently support it 2373 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT 2374 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2375 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN()); 2376 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE 2377 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2378 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN()); 2379 2380 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \ 2381 , EntryProbe, ResultProbe) \ 2382 \ 2383 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \ 2384 , ResultProbe); \ 2385 \ 2386 JNI_ENTRY(ResultType, \ 2387 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2388 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2389 \ 2390 EntryProbe; \ 2391 ResultType ret = 0;\ 2392 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2393 (const ResultType&)ret);\ 2394 \ 2395 JavaValue jvalue(Tag); \ 2396 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2397 /* Make sure class is initialized before trying to invoke its method */ \ 2398 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \ 2399 k()->initialize(CHECK_0); \ 2400 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2401 va_end(args); \ 2402 ret = jvalue.get_##ResultType(); \ 2403 return ret;\ 2404 JNI_END 2405 2406 // the runtime type of subword integral basic types is integer 2407 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN 2408 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2409 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref)); 2410 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE 2411 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2412 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref)); 2413 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR 2414 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2415 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref)); 2416 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT 2417 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2418 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref)); 2419 2420 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT 2421 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2422 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref)); 2423 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT 2424 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2425 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref)); 2426 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG 2427 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2428 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref)); 2429 // Float and double probes don't return value because dtrace doesn't currently support it 2430 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT 2431 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2432 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN()); 2433 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE 2434 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2435 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN()); 2436 2437 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \ 2438 , EntryProbe, ResultProbe) \ 2439 \ 2440 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \ 2441 , ResultProbe); \ 2442 \ 2443 JNI_ENTRY(ResultType, \ 2444 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2445 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2446 \ 2447 EntryProbe; \ 2448 ResultType ret = 0;\ 2449 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2450 (const ResultType&)ret);\ 2451 \ 2452 JavaValue jvalue(Tag); \ 2453 JNI_ArgumentPusherArray ap(methodID, args); \ 2454 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2455 ret = jvalue.get_##ResultType(); \ 2456 return ret;\ 2457 JNI_END 2458 2459 // the runtime type of subword integral basic types is integer 2460 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN 2461 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2462 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref)); 2463 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE 2464 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2465 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref)); 2466 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR 2467 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2468 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref)); 2469 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT 2470 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2471 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref)); 2472 2473 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT 2474 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2475 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref)); 2476 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT 2477 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2478 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref)); 2479 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG 2480 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2481 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref)); 2482 // Float and double probes don't return value because dtrace doesn't currently support it 2483 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT 2484 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2485 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN()); 2486 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE 2487 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2488 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN()); 2489 2490 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod 2491 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN()); 2492 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV 2493 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN()); 2494 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA 2495 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN()); 2496 #endif /* USDT2 */ 2497 2498 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) 2499 JNIWrapper("CallStaticVoidMethod"); 2500 #ifndef USDT2 2501 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); 2502 #else /* USDT2 */ 2503 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY( 2504 env, cls, (uintptr_t) methodID); 2505 #endif /* USDT2 */ 2506 DT_VOID_RETURN_MARK(CallStaticVoidMethod); 2507 2508 va_list args; 2509 va_start(args, methodID); 2510 JavaValue jvalue(T_VOID); 2511 JNI_ArgumentPusherVaArg ap(methodID, args); 2512 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2513 va_end(args); 2514 JNI_END 2515 2516 2517 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) 2518 JNIWrapper("CallStaticVoidMethodV"); 2519 #ifndef USDT2 2520 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); 2521 #else /* USDT2 */ 2522 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY( 2523 env, cls, (uintptr_t) methodID); 2524 #endif /* USDT2 */ 2525 DT_VOID_RETURN_MARK(CallStaticVoidMethodV); 2526 2527 JavaValue jvalue(T_VOID); 2528 JNI_ArgumentPusherVaArg ap(methodID, args); 2529 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2530 JNI_END 2531 2532 2533 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) 2534 JNIWrapper("CallStaticVoidMethodA"); 2535 #ifndef USDT2 2536 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); 2537 #else /* USDT2 */ 2538 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY( 2539 env, cls, (uintptr_t) methodID); 2540 #endif /* USDT2 */ 2541 DT_VOID_RETURN_MARK(CallStaticVoidMethodA); 2542 2543 JavaValue jvalue(T_VOID); 2544 JNI_ArgumentPusherArray ap(methodID, args); 2545 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2546 JNI_END 2547 2548 2549 // 2550 // Accessing Fields 2551 // 2552 2553 2554 #ifndef USDT2 2555 DT_RETURN_MARK_DECL(GetFieldID, jfieldID); 2556 #else /* USDT2 */ 2557 DT_RETURN_MARK_DECL(GetFieldID, jfieldID 2558 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref)); 2559 #endif /* USDT2 */ 2560 2561 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, 2562 const char *name, const char *sig)) 2563 JNIWrapper("GetFieldID"); 2564 #ifndef USDT2 2565 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); 2566 #else /* USDT2 */ 2567 HOTSPOT_JNI_GETFIELDID_ENTRY( 2568 env, clazz, (char *) name, (char *) sig); 2569 #endif /* USDT2 */ 2570 jfieldID ret = 0; 2571 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); 2572 2573 // The class should have been loaded (we have an instance of the class 2574 // passed in) so the field and signature should already be in the symbol 2575 // table. If they're not there, the field doesn't exist. 2576 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2577 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2578 if (fieldname == NULL || signame == NULL) { 2579 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2580 } 2581 KlassHandle k(THREAD, 2582 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2583 // Make sure class is initialized before handing id's out to fields 2584 k()->initialize(CHECK_NULL); 2585 2586 fieldDescriptor fd; 2587 if (!k()->oop_is_instance() || 2588 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) { 2589 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2590 } 2591 2592 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop 2593 // It may also have hash bits for k, if VerifyJNIFields is turned on. 2594 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); 2595 return ret; 2596 JNI_END 2597 2598 2599 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) 2600 JNIWrapper("GetObjectField"); 2601 #ifndef USDT2 2602 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); 2603 #else /* USDT2 */ 2604 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY( 2605 env, obj, (uintptr_t) fieldID); 2606 #endif /* USDT2 */ 2607 oop o = JNIHandles::resolve_non_null(obj); 2608 Klass* k = o->klass(); 2609 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2610 // Keep JVMTI addition small and only check enabled flag here. 2611 // jni_GetField_probe() assumes that is okay to create handles. 2612 if (JvmtiExport::should_post_field_access()) { 2613 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); 2614 } 2615 jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); 2616 #if INCLUDE_ALL_GCS 2617 // If G1 is enabled and we are accessing the value of the referent 2618 // field in a reference object then we need to register a non-null 2619 // referent with the SATB barrier. 2620 if (UseG1GC) { 2621 bool needs_barrier = false; 2622 2623 if (ret != NULL && 2624 offset == java_lang_ref_Reference::referent_offset && 2625 InstanceKlass::cast(k)->reference_type() != REF_NONE) { 2626 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); 2627 needs_barrier = true; 2628 } 2629 2630 if (needs_barrier) { 2631 oop referent = JNIHandles::resolve(ret); 2632 G1SATBCardTableModRefBS::enqueue(referent); 2633 } 2634 } 2635 #endif // INCLUDE_ALL_GCS 2636 #ifndef USDT2 2637 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); 2638 #else /* USDT2 */ 2639 HOTSPOT_JNI_GETOBJECTFIELD_RETURN( 2640 ret); 2641 #endif /* USDT2 */ 2642 return ret; 2643 JNI_END 2644 2645 2646 #ifndef USDT2 2647 #define DEFINE_GETFIELD(Return,Fieldname,Result) \ 2648 \ 2649 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ 2650 \ 2651 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2652 JNIWrapper("Get" XSTR(Result) "Field"); \ 2653 \ 2654 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ 2655 Return ret = 0;\ 2656 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2657 \ 2658 oop o = JNIHandles::resolve_non_null(obj); \ 2659 Klass* k = o->klass(); \ 2660 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2661 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2662 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2663 /* and creates a ResetNoHandleMark. */ \ 2664 if (JvmtiExport::should_post_field_access()) { \ 2665 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2666 } \ 2667 ret = o->Fieldname##_field(offset); \ 2668 return ret; \ 2669 JNI_END 2670 2671 DEFINE_GETFIELD(jboolean, bool, Boolean) 2672 DEFINE_GETFIELD(jbyte, byte, Byte) 2673 DEFINE_GETFIELD(jchar, char, Char) 2674 DEFINE_GETFIELD(jshort, short, Short) 2675 DEFINE_GETFIELD(jint, int, Int) 2676 DEFINE_GETFIELD(jlong, long, Long) 2677 DEFINE_GETFIELD(jfloat, float, Float) 2678 DEFINE_GETFIELD(jdouble, double, Double) 2679 2680 #else /* USDT2 */ 2681 2682 #define DEFINE_GETFIELD(Return,Fieldname,Result \ 2683 , EntryProbe, ReturnProbe) \ 2684 \ 2685 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \ 2686 , ReturnProbe); \ 2687 \ 2688 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2689 JNIWrapper("Get" XSTR(Result) "Field"); \ 2690 \ 2691 EntryProbe; \ 2692 Return ret = 0;\ 2693 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2694 \ 2695 oop o = JNIHandles::resolve_non_null(obj); \ 2696 Klass* k = o->klass(); \ 2697 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2698 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2699 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2700 /* and creates a ResetNoHandleMark. */ \ 2701 if (JvmtiExport::should_post_field_access()) { \ 2702 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2703 } \ 2704 ret = o->Fieldname##_field(offset); \ 2705 return ret; \ 2706 JNI_END 2707 2708 DEFINE_GETFIELD(jboolean, bool, Boolean 2709 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2710 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref)) 2711 DEFINE_GETFIELD(jbyte, byte, Byte 2712 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2713 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref)) 2714 DEFINE_GETFIELD(jchar, char, Char 2715 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2716 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref)) 2717 DEFINE_GETFIELD(jshort, short, Short 2718 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2719 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref)) 2720 DEFINE_GETFIELD(jint, int, Int 2721 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2722 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref)) 2723 DEFINE_GETFIELD(jlong, long, Long 2724 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2725 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref)) 2726 // Float and double probes don't return value because dtrace doesn't currently support it 2727 DEFINE_GETFIELD(jfloat, float, Float 2728 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2729 HOTSPOT_JNI_GETFLOATFIELD_RETURN()) 2730 DEFINE_GETFIELD(jdouble, double, Double 2731 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2732 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN()) 2733 #endif /* USDT2 */ 2734 2735 address jni_GetBooleanField_addr() { 2736 return (address)jni_GetBooleanField; 2737 } 2738 address jni_GetByteField_addr() { 2739 return (address)jni_GetByteField; 2740 } 2741 address jni_GetCharField_addr() { 2742 return (address)jni_GetCharField; 2743 } 2744 address jni_GetShortField_addr() { 2745 return (address)jni_GetShortField; 2746 } 2747 address jni_GetIntField_addr() { 2748 return (address)jni_GetIntField; 2749 } 2750 address jni_GetLongField_addr() { 2751 return (address)jni_GetLongField; 2752 } 2753 address jni_GetFloatField_addr() { 2754 return (address)jni_GetFloatField; 2755 } 2756 address jni_GetDoubleField_addr() { 2757 return (address)jni_GetDoubleField; 2758 } 2759 2760 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) 2761 JNIWrapper("SetObjectField"); 2762 #ifndef USDT2 2763 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); 2764 #else /* USDT2 */ 2765 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY( 2766 env, obj, (uintptr_t) fieldID, value); 2767 #endif /* USDT2 */ 2768 oop o = JNIHandles::resolve_non_null(obj); 2769 Klass* k = o->klass(); 2770 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2771 // Keep JVMTI addition small and only check enabled flag here. 2772 // jni_SetField_probe_nh() assumes that is not okay to create handles 2773 // and creates a ResetNoHandleMark. 2774 if (JvmtiExport::should_post_field_modification()) { 2775 jvalue field_value; 2776 field_value.l = value; 2777 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); 2778 } 2779 o->obj_field_put(offset, JNIHandles::resolve(value)); 2780 #ifndef USDT2 2781 DTRACE_PROBE(hotspot_jni, SetObjectField__return); 2782 #else /* USDT2 */ 2783 HOTSPOT_JNI_SETOBJECTFIELD_RETURN( 2784 ); 2785 #endif /* USDT2 */ 2786 JNI_END 2787 2788 #ifndef USDT2 2789 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ 2790 \ 2791 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2792 JNIWrapper("Set" XSTR(Result) "Field"); \ 2793 \ 2794 FP_SELECT_##Result( \ 2795 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \ 2796 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \ 2797 \ 2798 oop o = JNIHandles::resolve_non_null(obj); \ 2799 Klass* k = o->klass(); \ 2800 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2801 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2802 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2803 /* and creates a ResetNoHandleMark. */ \ 2804 if (JvmtiExport::should_post_field_modification()) { \ 2805 jvalue field_value; \ 2806 field_value.unionType = value; \ 2807 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2808 } \ 2809 o->Fieldname##_field_put(offset, value); \ 2810 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ 2811 JNI_END 2812 2813 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) 2814 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) 2815 DEFINE_SETFIELD(jchar, char, Char, 'C', c) 2816 DEFINE_SETFIELD(jshort, short, Short, 'S', s) 2817 DEFINE_SETFIELD(jint, int, Int, 'I', i) 2818 DEFINE_SETFIELD(jlong, long, Long, 'J', j) 2819 DEFINE_SETFIELD(jfloat, float, Float, 'F', f) 2820 DEFINE_SETFIELD(jdouble, double, Double, 'D', d) 2821 2822 #else /* USDT2 */ 2823 2824 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \ 2825 , EntryProbe, ReturnProbe) \ 2826 \ 2827 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2828 JNIWrapper("Set" XSTR(Result) "Field"); \ 2829 \ 2830 EntryProbe; \ 2831 \ 2832 oop o = JNIHandles::resolve_non_null(obj); \ 2833 Klass* k = o->klass(); \ 2834 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2835 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2836 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2837 /* and creates a ResetNoHandleMark. */ \ 2838 if (JvmtiExport::should_post_field_modification()) { \ 2839 jvalue field_value; \ 2840 field_value.unionType = value; \ 2841 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2842 } \ 2843 o->Fieldname##_field_put(offset, value); \ 2844 ReturnProbe; \ 2845 JNI_END 2846 2847 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z 2848 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2849 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 2850 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b 2851 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2852 HOTSPOT_JNI_SETBYTEFIELD_RETURN()) 2853 DEFINE_SETFIELD(jchar, char, Char, 'C', c 2854 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2855 HOTSPOT_JNI_SETCHARFIELD_RETURN()) 2856 DEFINE_SETFIELD(jshort, short, Short, 'S', s 2857 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2858 HOTSPOT_JNI_SETSHORTFIELD_RETURN()) 2859 DEFINE_SETFIELD(jint, int, Int, 'I', i 2860 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2861 HOTSPOT_JNI_SETINTFIELD_RETURN()) 2862 DEFINE_SETFIELD(jlong, long, Long, 'J', j 2863 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2864 HOTSPOT_JNI_SETLONGFIELD_RETURN()) 2865 // Float and double probes don't return value because dtrace doesn't currently support it 2866 DEFINE_SETFIELD(jfloat, float, Float, 'F', f 2867 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2868 HOTSPOT_JNI_SETFLOATFIELD_RETURN()) 2869 DEFINE_SETFIELD(jdouble, double, Double, 'D', d 2870 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2871 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN()) 2872 #endif /* USDT2 */ 2873 2874 #ifndef USDT2 2875 DT_RETURN_MARK_DECL(ToReflectedField, jobject); 2876 #else /* USDT2 */ 2877 DT_RETURN_MARK_DECL(ToReflectedField, jobject 2878 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref)); 2879 #endif /* USDT2 */ 2880 2881 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) 2882 JNIWrapper("ToReflectedField"); 2883 #ifndef USDT2 2884 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, 2885 env, cls, fieldID, isStatic); 2886 #else /* USDT2 */ 2887 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY( 2888 env, cls, (uintptr_t) fieldID, isStatic); 2889 #endif /* USDT2 */ 2890 jobject ret = NULL; 2891 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); 2892 2893 fieldDescriptor fd; 2894 bool found = false; 2895 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); 2896 2897 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); 2898 2899 if (isStatic) { 2900 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*. 2901 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2902 assert(id->is_static_field_id(), "invalid static field id"); 2903 found = id->find_local_field(&fd); 2904 } else { 2905 // Non-static field. The fieldID is really the offset of the field within the instanceOop. 2906 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2907 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); 2908 } 2909 assert(found, "bad fieldID passed into jni_ToReflectedField"); 2910 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); 2911 ret = JNIHandles::make_local(env, reflected); 2912 return ret; 2913 JNI_END 2914 2915 2916 // 2917 // Accessing Static Fields 2918 // 2919 #ifndef USDT2 2920 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); 2921 #else /* USDT2 */ 2922 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID 2923 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref)); 2924 #endif /* USDT2 */ 2925 2926 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, 2927 const char *name, const char *sig)) 2928 JNIWrapper("GetStaticFieldID"); 2929 #ifndef USDT2 2930 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); 2931 #else /* USDT2 */ 2932 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY( 2933 env, clazz, (char *) name, (char *) sig); 2934 #endif /* USDT2 */ 2935 jfieldID ret = NULL; 2936 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); 2937 2938 // The class should have been loaded (we have an instance of the class 2939 // passed in) so the field and signature should already be in the symbol 2940 // table. If they're not there, the field doesn't exist. 2941 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2942 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2943 if (fieldname == NULL || signame == NULL) { 2944 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2945 } 2946 KlassHandle k(THREAD, 2947 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2948 // Make sure class is initialized before handing id's out to static fields 2949 k()->initialize(CHECK_NULL); 2950 2951 fieldDescriptor fd; 2952 if (!k()->oop_is_instance() || 2953 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) { 2954 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2955 } 2956 2957 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 2958 JNIid* id = fd.field_holder()->jni_id_for(fd.offset()); 2959 debug_only(id->set_is_static_field_id();) 2960 2961 debug_only(id->verify(fd.field_holder())); 2962 2963 ret = jfieldIDWorkaround::to_static_jfieldID(id); 2964 return ret; 2965 JNI_END 2966 2967 2968 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) 2969 JNIWrapper("GetStaticObjectField"); 2970 #ifndef USDT2 2971 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); 2972 #else /* USDT2 */ 2973 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY( 2974 env, clazz, (uintptr_t) fieldID); 2975 #endif /* USDT2 */ 2976 #if INCLUDE_JNI_CHECK 2977 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);) 2978 #endif // INCLUDE_JNI_CHECK 2979 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2980 assert(id->is_static_field_id(), "invalid static field id"); 2981 // Keep JVMTI addition small and only check enabled flag here. 2982 // jni_GetField_probe() assumes that is okay to create handles. 2983 if (JvmtiExport::should_post_field_access()) { 2984 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); 2985 } 2986 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset())); 2987 #ifndef USDT2 2988 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); 2989 #else /* USDT2 */ 2990 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN( 2991 ret); 2992 #endif /* USDT2 */ 2993 return ret; 2994 JNI_END 2995 2996 #ifndef USDT2 2997 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ 2998 \ 2999 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ 3000 \ 3001 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3002 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3003 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ 3004 Return ret = 0;\ 3005 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3006 (const Return&)ret);\ 3007 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3008 assert(id->is_static_field_id(), "invalid static field id"); \ 3009 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3010 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3011 if (JvmtiExport::should_post_field_access()) { \ 3012 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3013 } \ 3014 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3015 return ret;\ 3016 JNI_END 3017 3018 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) 3019 DEFINE_GETSTATICFIELD(jbyte, byte, Byte) 3020 DEFINE_GETSTATICFIELD(jchar, char, Char) 3021 DEFINE_GETSTATICFIELD(jshort, short, Short) 3022 DEFINE_GETSTATICFIELD(jint, int, Int) 3023 DEFINE_GETSTATICFIELD(jlong, long, Long) 3024 DEFINE_GETSTATICFIELD(jfloat, float, Float) 3025 DEFINE_GETSTATICFIELD(jdouble, double, Double) 3026 3027 #else /* USDT2 */ 3028 3029 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \ 3030 , EntryProbe, ReturnProbe) \ 3031 \ 3032 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \ 3033 , ReturnProbe); \ 3034 \ 3035 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3036 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3037 EntryProbe; \ 3038 Return ret = 0;\ 3039 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3040 (const Return&)ret);\ 3041 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3042 assert(id->is_static_field_id(), "invalid static field id"); \ 3043 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3044 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3045 if (JvmtiExport::should_post_field_access()) { \ 3046 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3047 } \ 3048 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3049 return ret;\ 3050 JNI_END 3051 3052 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean 3053 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref)) 3054 DEFINE_GETSTATICFIELD(jbyte, byte, Byte 3055 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) ) 3056 DEFINE_GETSTATICFIELD(jchar, char, Char 3057 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) ) 3058 DEFINE_GETSTATICFIELD(jshort, short, Short 3059 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) ) 3060 DEFINE_GETSTATICFIELD(jint, int, Int 3061 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) ) 3062 DEFINE_GETSTATICFIELD(jlong, long, Long 3063 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) ) 3064 // Float and double probes don't return value because dtrace doesn't currently support it 3065 DEFINE_GETSTATICFIELD(jfloat, float, Float 3066 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() ) 3067 DEFINE_GETSTATICFIELD(jdouble, double, Double 3068 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() ) 3069 #endif /* USDT2 */ 3070 3071 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) 3072 JNIWrapper("SetStaticObjectField"); 3073 #ifndef USDT2 3074 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); 3075 #else /* USDT2 */ 3076 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY( 3077 env, clazz, (uintptr_t) fieldID, value); 3078 #endif /* USDT2 */ 3079 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3080 assert(id->is_static_field_id(), "invalid static field id"); 3081 // Keep JVMTI addition small and only check enabled flag here. 3082 // jni_SetField_probe() assumes that is okay to create handles. 3083 if (JvmtiExport::should_post_field_modification()) { 3084 jvalue field_value; 3085 field_value.l = value; 3086 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); 3087 } 3088 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value)); 3089 #ifndef USDT2 3090 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); 3091 #else /* USDT2 */ 3092 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN( 3093 ); 3094 #endif /* USDT2 */ 3095 JNI_END 3096 3097 3098 #ifndef USDT2 3099 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ 3100 \ 3101 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3102 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3103 FP_SELECT_##Result( \ 3104 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \ 3105 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \ 3106 \ 3107 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3108 assert(id->is_static_field_id(), "invalid static field id"); \ 3109 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3110 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3111 if (JvmtiExport::should_post_field_modification()) { \ 3112 jvalue field_value; \ 3113 field_value.unionType = value; \ 3114 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3115 } \ 3116 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3117 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\ 3118 JNI_END 3119 3120 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z) 3121 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b) 3122 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c) 3123 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s) 3124 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i) 3125 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j) 3126 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f) 3127 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d) 3128 3129 #else /* USDT2 */ 3130 3131 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \ 3132 , EntryProbe, ReturnProbe) \ 3133 \ 3134 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3135 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3136 EntryProbe; \ 3137 \ 3138 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3139 assert(id->is_static_field_id(), "invalid static field id"); \ 3140 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3141 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3142 if (JvmtiExport::should_post_field_modification()) { \ 3143 jvalue field_value; \ 3144 field_value.unionType = value; \ 3145 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3146 } \ 3147 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3148 ReturnProbe;\ 3149 JNI_END 3150 3151 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z 3152 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value), 3153 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 3154 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b 3155 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3156 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN()) 3157 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c 3158 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3159 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN()) 3160 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s 3161 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3162 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN()) 3163 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i 3164 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3165 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN()) 3166 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j 3167 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3168 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN()) 3169 // Float and double probes don't return value because dtrace doesn't currently support it 3170 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f 3171 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3172 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN()) 3173 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d 3174 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3175 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN()) 3176 #endif /* USDT2 */ 3177 3178 // 3179 // String Operations 3180 // 3181 3182 // Unicode Interface 3183 3184 #ifndef USDT2 3185 DT_RETURN_MARK_DECL(NewString, jstring); 3186 #else /* USDT2 */ 3187 DT_RETURN_MARK_DECL(NewString, jstring 3188 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref)); 3189 #endif /* USDT2 */ 3190 3191 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len)) 3192 JNIWrapper("NewString"); 3193 #ifndef USDT2 3194 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len); 3195 #else /* USDT2 */ 3196 HOTSPOT_JNI_NEWSTRING_ENTRY( 3197 env, (uint16_t *) unicodeChars, len); 3198 #endif /* USDT2 */ 3199 jstring ret = NULL; 3200 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret); 3201 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL); 3202 ret = (jstring) JNIHandles::make_local(env, string); 3203 return ret; 3204 JNI_END 3205 3206 3207 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string)) 3208 JNIWrapper("GetStringLength"); 3209 #ifndef USDT2 3210 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string); 3211 #else /* USDT2 */ 3212 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY( 3213 env, string); 3214 #endif /* USDT2 */ 3215 jsize ret = 0; 3216 oop s = JNIHandles::resolve_non_null(string); 3217 if (java_lang_String::value(s) != NULL) { 3218 ret = java_lang_String::length(s); 3219 } 3220 #ifndef USDT2 3221 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret); 3222 #else /* USDT2 */ 3223 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN( 3224 ret); 3225 #endif /* USDT2 */ 3226 return ret; 3227 JNI_END 3228 3229 3230 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars( 3231 JNIEnv *env, jstring string, jboolean *isCopy)) 3232 JNIWrapper("GetStringChars"); 3233 #ifndef USDT2 3234 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy); 3235 #else /* USDT2 */ 3236 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY( 3237 env, string, (uintptr_t *) isCopy); 3238 #endif /* USDT2 */ 3239 jchar* buf = NULL; 3240 oop s = JNIHandles::resolve_non_null(string); 3241 typeArrayOop s_value = java_lang_String::value(s); 3242 if (s_value != NULL) { 3243 int s_len = java_lang_String::length(s); 3244 int s_offset = java_lang_String::offset(s); 3245 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination 3246 /* JNI Specification states return NULL on OOM */ 3247 if (buf != NULL) { 3248 if (s_len > 0) { 3249 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len); 3250 } 3251 buf[s_len] = 0; 3252 //%note jni_5 3253 if (isCopy != NULL) { 3254 *isCopy = JNI_TRUE; 3255 } 3256 } 3257 } 3258 #ifndef USDT2 3259 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf); 3260 #else /* USDT2 */ 3261 HOTSPOT_JNI_GETSTRINGCHARS_RETURN( 3262 buf); 3263 #endif /* USDT2 */ 3264 return buf; 3265 JNI_END 3266 3267 3268 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)) 3269 JNIWrapper("ReleaseStringChars"); 3270 #ifndef USDT2 3271 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars); 3272 #else /* USDT2 */ 3273 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY( 3274 env, str, (uint16_t *) chars); 3275 #endif /* USDT2 */ 3276 //%note jni_6 3277 if (chars != NULL) { 3278 // Since String objects are supposed to be immutable, don't copy any 3279 // new data back. A bad user will have to go after the char array. 3280 FreeHeap((void*) chars); 3281 } 3282 #ifndef USDT2 3283 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return); 3284 #else /* USDT2 */ 3285 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN( 3286 ); 3287 #endif /* USDT2 */ 3288 JNI_END 3289 3290 3291 // UTF Interface 3292 3293 #ifndef USDT2 3294 DT_RETURN_MARK_DECL(NewStringUTF, jstring); 3295 #else /* USDT2 */ 3296 DT_RETURN_MARK_DECL(NewStringUTF, jstring 3297 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref)); 3298 #endif /* USDT2 */ 3299 3300 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes)) 3301 JNIWrapper("NewStringUTF"); 3302 #ifndef USDT2 3303 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes); 3304 #else /* USDT2 */ 3305 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY( 3306 env, (char *) bytes); 3307 #endif /* USDT2 */ 3308 jstring ret; 3309 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret); 3310 3311 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL); 3312 ret = (jstring) JNIHandles::make_local(env, result); 3313 return ret; 3314 JNI_END 3315 3316 3317 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string)) 3318 JNIWrapper("GetStringUTFLength"); 3319 #ifndef USDT2 3320 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string); 3321 #else /* USDT2 */ 3322 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY( 3323 env, string); 3324 #endif /* USDT2 */ 3325 jsize ret = 0; 3326 oop java_string = JNIHandles::resolve_non_null(string); 3327 if (java_lang_String::value(java_string) != NULL) { 3328 ret = java_lang_String::utf8_length(java_string); 3329 } 3330 #ifndef USDT2 3331 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret); 3332 #else /* USDT2 */ 3333 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN( 3334 ret); 3335 #endif /* USDT2 */ 3336 return ret; 3337 JNI_END 3338 3339 3340 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)) 3341 JNIWrapper("GetStringUTFChars"); 3342 #ifndef USDT2 3343 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy); 3344 #else /* USDT2 */ 3345 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY( 3346 env, string, (uintptr_t *) isCopy); 3347 #endif /* USDT2 */ 3348 char* result = NULL; 3349 oop java_string = JNIHandles::resolve_non_null(string); 3350 if (java_lang_String::value(java_string) != NULL) { 3351 size_t length = java_lang_String::utf8_length(java_string); 3352 /* JNI Specification states return NULL on OOM */ 3353 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL); 3354 if (result != NULL) { 3355 java_lang_String::as_utf8_string(java_string, result, (int) length + 1); 3356 if (isCopy != NULL) { 3357 *isCopy = JNI_TRUE; 3358 } 3359 } 3360 } 3361 #ifndef USDT2 3362 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result); 3363 #else /* USDT2 */ 3364 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN( 3365 result); 3366 #endif /* USDT2 */ 3367 return result; 3368 JNI_END 3369 3370 3371 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars)) 3372 JNIWrapper("ReleaseStringUTFChars"); 3373 #ifndef USDT2 3374 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars); 3375 #else /* USDT2 */ 3376 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY( 3377 env, str, (char *) chars); 3378 #endif /* USDT2 */ 3379 if (chars != NULL) { 3380 FreeHeap((char*) chars); 3381 } 3382 #ifndef USDT2 3383 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return); 3384 #else /* USDT2 */ 3385 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN( 3386 ); 3387 #endif /* USDT2 */ 3388 JNI_END 3389 3390 3391 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array)) 3392 JNIWrapper("GetArrayLength"); 3393 #ifndef USDT2 3394 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array); 3395 #else /* USDT2 */ 3396 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY( 3397 env, array); 3398 #endif /* USDT2 */ 3399 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array)); 3400 assert(a->is_array(), "must be array"); 3401 jsize ret = a->length(); 3402 #ifndef USDT2 3403 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret); 3404 #else /* USDT2 */ 3405 HOTSPOT_JNI_GETARRAYLENGTH_RETURN( 3406 ret); 3407 #endif /* USDT2 */ 3408 return ret; 3409 JNI_END 3410 3411 3412 // 3413 // Object Array Operations 3414 // 3415 3416 #ifndef USDT2 3417 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray); 3418 #else /* USDT2 */ 3419 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray 3420 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref)); 3421 #endif /* USDT2 */ 3422 3423 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement)) 3424 JNIWrapper("NewObjectArray"); 3425 #ifndef USDT2 3426 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement); 3427 #else /* USDT2 */ 3428 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY( 3429 env, length, elementClass, initialElement); 3430 #endif /* USDT2 */ 3431 jobjectArray ret = NULL; 3432 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret); 3433 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass))); 3434 Klass* ako = ek()->array_klass(CHECK_NULL); 3435 KlassHandle ak = KlassHandle(THREAD, ako); 3436 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL); 3437 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL); 3438 oop initial_value = JNIHandles::resolve(initialElement); 3439 if (initial_value != NULL) { // array already initialized with NULL 3440 for (int index = 0; index < length; index++) { 3441 result->obj_at_put(index, initial_value); 3442 } 3443 } 3444 ret = (jobjectArray) JNIHandles::make_local(env, result); 3445 return ret; 3446 JNI_END 3447 3448 #ifndef USDT2 3449 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject); 3450 #else /* USDT2 */ 3451 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject 3452 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref)); 3453 #endif /* USDT2 */ 3454 3455 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index)) 3456 JNIWrapper("GetObjectArrayElement"); 3457 #ifndef USDT2 3458 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index); 3459 #else /* USDT2 */ 3460 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY( 3461 env, array, index); 3462 #endif /* USDT2 */ 3463 jobject ret = NULL; 3464 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret); 3465 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3466 if (a->is_within_bounds(index)) { 3467 ret = JNIHandles::make_local(env, a->obj_at(index)); 3468 return ret; 3469 } else { 3470 char buf[jintAsStringSize]; 3471 sprintf(buf, "%d", index); 3472 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3473 } 3474 JNI_END 3475 3476 #ifndef USDT2 3477 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement); 3478 #else /* USDT2 */ 3479 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement 3480 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN()); 3481 #endif /* USDT2 */ 3482 3483 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value)) 3484 JNIWrapper("SetObjectArrayElement"); 3485 #ifndef USDT2 3486 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value); 3487 #else /* USDT2 */ 3488 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY( 3489 env, array, index, value); 3490 #endif /* USDT2 */ 3491 DT_VOID_RETURN_MARK(SetObjectArrayElement); 3492 3493 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3494 oop v = JNIHandles::resolve(value); 3495 if (a->is_within_bounds(index)) { 3496 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) { 3497 a->obj_at_put(index, v); 3498 } else { 3499 THROW(vmSymbols::java_lang_ArrayStoreException()); 3500 } 3501 } else { 3502 char buf[jintAsStringSize]; 3503 sprintf(buf, "%d", index); 3504 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3505 } 3506 JNI_END 3507 3508 3509 #ifndef USDT2 3510 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \ 3511 \ 3512 DT_RETURN_MARK_DECL(New##Result##Array, Return); \ 3513 \ 3514 JNI_ENTRY(Return, \ 3515 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3516 JNIWrapper("New" XSTR(Result) "Array"); \ 3517 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\ 3518 Return ret = NULL;\ 3519 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3520 \ 3521 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3522 ret = (Return) JNIHandles::make_local(env, obj); \ 3523 return ret;\ 3524 JNI_END 3525 3526 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean) 3527 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte) 3528 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short) 3529 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char) 3530 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int) 3531 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long) 3532 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float) 3533 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double) 3534 3535 #else /* USDT2 */ 3536 3537 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \ 3538 ,EntryProbe,ReturnProbe) \ 3539 \ 3540 DT_RETURN_MARK_DECL(New##Result##Array, Return \ 3541 , ReturnProbe); \ 3542 \ 3543 JNI_ENTRY(Return, \ 3544 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3545 JNIWrapper("New" XSTR(Result) "Array"); \ 3546 EntryProbe; \ 3547 Return ret = NULL;\ 3548 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3549 \ 3550 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3551 ret = (Return) JNIHandles::make_local(env, obj); \ 3552 return ret;\ 3553 JNI_END 3554 3555 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean, 3556 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len), 3557 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref)) 3558 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte, 3559 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len), 3560 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref)) 3561 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short, 3562 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len), 3563 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref)) 3564 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char, 3565 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len), 3566 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref)) 3567 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int, 3568 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len), 3569 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref)) 3570 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long, 3571 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len), 3572 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref)) 3573 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float, 3574 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len), 3575 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref)) 3576 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double, 3577 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len), 3578 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref)) 3579 #endif /* USDT2 */ 3580 3581 // Return an address which will fault if the caller writes to it. 3582 3583 static char* get_bad_address() { 3584 static char* bad_address = NULL; 3585 if (bad_address == NULL) { 3586 size_t size = os::vm_allocation_granularity(); 3587 bad_address = os::reserve_memory(size); 3588 if (bad_address != NULL) { 3589 os::protect_memory(bad_address, size, os::MEM_PROT_READ, 3590 /*is_committed*/false); 3591 } 3592 } 3593 return bad_address; 3594 } 3595 3596 3597 #ifndef USDT2 3598 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \ 3599 \ 3600 JNI_QUICK_ENTRY(ElementType*, \ 3601 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3602 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3603 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\ 3604 /* allocate an chunk of memory in c land */ \ 3605 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3606 ElementType* result; \ 3607 int len = a->length(); \ 3608 if (len == 0) { \ 3609 /* Empty array: legal but useless, can't return NULL. \ 3610 * Return a pointer to something useless. \ 3611 * Avoid asserts in typeArrayOop. */ \ 3612 result = (ElementType*)get_bad_address(); \ 3613 } else { \ 3614 /* JNI Specification states return NULL on OOM */ \ 3615 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \ 3616 if (result != NULL) { \ 3617 /* copy the array to the c chunk */ \ 3618 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3619 if (isCopy) { \ 3620 *isCopy = JNI_TRUE; \ 3621 } \ 3622 } \ 3623 } \ 3624 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\ 3625 return result; \ 3626 JNI_END 3627 3628 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3629 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3630 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3631 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3632 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int) 3633 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3634 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3635 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3636 3637 #else /* USDT2 */ 3638 3639 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \ 3640 , EntryProbe, ReturnProbe) \ 3641 \ 3642 JNI_QUICK_ENTRY(ElementType*, \ 3643 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3644 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3645 EntryProbe; \ 3646 /* allocate an chunk of memory in c land */ \ 3647 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3648 ElementType* result; \ 3649 int len = a->length(); \ 3650 if (len == 0) { \ 3651 /* Empty array: legal but useless, can't return NULL. \ 3652 * Return a pointer to something useless. \ 3653 * Avoid asserts in typeArrayOop. */ \ 3654 result = (ElementType*)get_bad_address(); \ 3655 } else { \ 3656 /* JNI Specification states return NULL on OOM */ \ 3657 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \ 3658 if (result != NULL) { \ 3659 /* copy the array to the c chunk */ \ 3660 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3661 if (isCopy) { \ 3662 *isCopy = JNI_TRUE; \ 3663 } \ 3664 } \ 3665 } \ 3666 ReturnProbe; \ 3667 return result; \ 3668 JNI_END 3669 3670 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3671 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3672 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result)) 3673 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3674 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3675 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result)) 3676 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3677 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3678 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result)) 3679 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3680 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3681 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result)) 3682 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int 3683 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3684 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result)) 3685 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3686 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3687 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result))) 3688 // Float and double probes don't return value because dtrace doesn't currently support it 3689 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3690 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3691 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result)) 3692 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3693 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3694 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result)) 3695 #endif /* USDT2 */ 3696 3697 #ifndef USDT2 3698 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \ 3699 \ 3700 JNI_QUICK_ENTRY(void, \ 3701 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3702 ElementType *buf, jint mode)) \ 3703 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3704 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\ 3705 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3706 int len = a->length(); \ 3707 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3708 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3709 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3710 } \ 3711 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3712 FreeHeap(buf); \ 3713 } \ 3714 } \ 3715 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\ 3716 JNI_END 3717 3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3722 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int) 3723 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3724 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3725 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3726 3727 #else /* USDT2 */ 3728 3729 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \ 3730 , EntryProbe, ReturnProbe);\ 3731 \ 3732 JNI_QUICK_ENTRY(void, \ 3733 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3734 ElementType *buf, jint mode)) \ 3735 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3736 EntryProbe; \ 3737 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3738 int len = a->length(); \ 3739 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3740 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3741 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3742 } \ 3743 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3744 FreeHeap(buf); \ 3745 } \ 3746 } \ 3747 ReturnProbe; \ 3748 JNI_END 3749 3750 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3751 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3752 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN()) 3753 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3754 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode), 3755 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN()) 3756 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3757 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3758 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN()) 3759 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3760 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3761 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN()) 3762 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int 3763 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode), 3764 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN()) 3765 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3766 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3767 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN()) 3768 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3769 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode), 3770 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN()) 3771 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3772 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode), 3773 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN()) 3774 #endif /* USDT2 */ 3775 3776 #ifndef USDT2 3777 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3778 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\ 3779 \ 3780 JNI_ENTRY(void, \ 3781 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3782 jsize len, ElementType *buf)) \ 3783 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3784 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3785 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3786 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3787 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3788 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3789 } else { \ 3790 if (len > 0) { \ 3791 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3792 memcpy((u_char*) buf, \ 3793 (u_char*) src->Tag##_at_addr(start), \ 3794 len << sc); \ 3795 } \ 3796 } \ 3797 JNI_END 3798 3799 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool) 3800 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3801 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3802 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3803 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int) 3804 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3805 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3806 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3807 3808 #else /* USDT2 */ 3809 3810 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3811 , EntryProbe, ReturnProbe); \ 3812 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \ 3813 , ReturnProbe); \ 3814 \ 3815 JNI_ENTRY(void, \ 3816 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3817 jsize len, ElementType *buf)) \ 3818 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3819 EntryProbe; \ 3820 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3821 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3822 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3823 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3824 } else { \ 3825 if (len > 0) { \ 3826 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3827 memcpy((u_char*) buf, \ 3828 (u_char*) src->Tag##_at_addr(start), \ 3829 len << sc); \ 3830 } \ 3831 } \ 3832 JNI_END 3833 3834 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool 3835 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3836 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN()); 3837 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3838 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3839 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN()); 3840 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3841 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3842 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN()); 3843 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3844 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf), 3845 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN()); 3846 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int 3847 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf), 3848 HOTSPOT_JNI_GETINTARRAYREGION_RETURN()); 3849 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long 3850 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3851 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN()); 3852 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3853 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3854 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN()); 3855 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3856 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3857 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN()); 3858 #endif /* USDT2 */ 3859 3860 #ifndef USDT2 3861 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3862 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\ 3863 \ 3864 JNI_ENTRY(void, \ 3865 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3866 jsize len, const ElementType *buf)) \ 3867 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3868 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3869 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3870 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3871 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3872 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3873 } else { \ 3874 if (len > 0) { \ 3875 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3876 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3877 (u_char*) buf, \ 3878 len << sc); \ 3879 } \ 3880 } \ 3881 JNI_END 3882 3883 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool) 3884 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3885 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3886 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3887 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int) 3888 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3889 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3890 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3891 3892 #else /* USDT2 */ 3893 3894 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3895 , EntryProbe, ReturnProbe); \ 3896 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \ 3897 ,ReturnProbe); \ 3898 \ 3899 JNI_ENTRY(void, \ 3900 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3901 jsize len, const ElementType *buf)) \ 3902 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3903 EntryProbe; \ 3904 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3905 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3906 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3907 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3908 } else { \ 3909 if (len > 0) { \ 3910 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3911 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3912 (u_char*) buf, \ 3913 len << sc); \ 3914 } \ 3915 } \ 3916 JNI_END 3917 3918 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool 3919 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf), 3920 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN()) 3921 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3922 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3923 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN()) 3924 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3925 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3926 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN()) 3927 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3928 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3929 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN()) 3930 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int 3931 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf), 3932 HOTSPOT_JNI_SETINTARRAYREGION_RETURN()) 3933 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long 3934 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3935 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN()) 3936 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3937 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3938 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN()) 3939 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3940 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3941 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN()) 3942 #endif /* USDT2 */ 3943 3944 3945 // 3946 // Interception of natives 3947 // 3948 3949 // The RegisterNatives call being attempted tried to register with a method that 3950 // is not native. Ask JVM TI what prefixes have been specified. Then check 3951 // to see if the native method is now wrapped with the prefixes. See the 3952 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details. 3953 static Method* find_prefixed_native(KlassHandle k, 3954 Symbol* name, Symbol* signature, TRAPS) { 3955 #if INCLUDE_JVMTI 3956 ResourceMark rm(THREAD); 3957 Method* method; 3958 int name_len = name->utf8_length(); 3959 char* name_str = name->as_utf8(); 3960 int prefix_count; 3961 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); 3962 for (int i = 0; i < prefix_count; i++) { 3963 char* prefix = prefixes[i]; 3964 int prefix_len = (int)strlen(prefix); 3965 3966 // try adding this prefix to the method name and see if it matches another method name 3967 int trial_len = name_len + prefix_len; 3968 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1); 3969 strcpy(trial_name_str, prefix); 3970 strcat(trial_name_str, name_str); 3971 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len); 3972 if (trial_name == NULL) { 3973 continue; // no such symbol, so this prefix wasn't used, try the next prefix 3974 } 3975 method = k()->lookup_method(trial_name, signature); 3976 if (method == NULL) { 3977 continue; // signature doesn't match, try the next prefix 3978 } 3979 if (method->is_native()) { 3980 method->set_is_prefixed_native(); 3981 return method; // wahoo, we found a prefixed version of the method, return it 3982 } 3983 // found as non-native, so prefix is good, add it, probably just need more prefixes 3984 name_len = trial_len; 3985 name_str = trial_name_str; 3986 } 3987 #endif // INCLUDE_JVMTI 3988 return NULL; // not found 3989 } 3990 3991 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) { 3992 Method* method = k()->lookup_method(name, signature); 3993 if (method == NULL) { 3994 ResourceMark rm; 3995 stringStream st; 3996 st.print("Method %s name or signature does not match", 3997 Method::name_and_sig_as_C_string(k(), name, signature)); 3998 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3999 } 4000 if (!method->is_native()) { 4001 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es) 4002 method = find_prefixed_native(k, name, signature, THREAD); 4003 if (method == NULL) { 4004 ResourceMark rm; 4005 stringStream st; 4006 st.print("Method %s is not declared as native", 4007 Method::name_and_sig_as_C_string(k(), name, signature)); 4008 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 4009 } 4010 } 4011 4012 if (entry != NULL) { 4013 method->set_native_function(entry, 4014 Method::native_bind_event_is_interesting); 4015 } else { 4016 method->clear_native_function(); 4017 } 4018 if (PrintJNIResolving) { 4019 ResourceMark rm(THREAD); 4020 tty->print_cr("[Registering JNI native method %s.%s]", 4021 method->method_holder()->external_name(), 4022 method->name()->as_C_string()); 4023 } 4024 return true; 4025 } 4026 4027 #ifndef USDT2 4028 DT_RETURN_MARK_DECL(RegisterNatives, jint); 4029 #else /* USDT2 */ 4030 DT_RETURN_MARK_DECL(RegisterNatives, jint 4031 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref)); 4032 #endif /* USDT2 */ 4033 4034 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz, 4035 const JNINativeMethod *methods, 4036 jint nMethods)) 4037 JNIWrapper("RegisterNatives"); 4038 #ifndef USDT2 4039 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods); 4040 #else /* USDT2 */ 4041 HOTSPOT_JNI_REGISTERNATIVES_ENTRY( 4042 env, clazz, (void *) methods, nMethods); 4043 #endif /* USDT2 */ 4044 jint ret = 0; 4045 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret); 4046 4047 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 4048 4049 for (int index = 0; index < nMethods; index++) { 4050 const char* meth_name = methods[index].name; 4051 const char* meth_sig = methods[index].signature; 4052 int meth_name_len = (int)strlen(meth_name); 4053 4054 // The class should have been loaded (we have an instance of the class 4055 // passed in) so the method and signature should already be in the symbol 4056 // table. If they're not there, the method doesn't exist. 4057 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len); 4058 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig)); 4059 4060 if (name == NULL || signature == NULL) { 4061 ResourceMark rm; 4062 stringStream st; 4063 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig); 4064 // Must return negative value on failure 4065 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1); 4066 } 4067 4068 bool res = register_native(h_k, name, signature, 4069 (address) methods[index].fnPtr, THREAD); 4070 if (!res) { 4071 ret = -1; 4072 break; 4073 } 4074 } 4075 return ret; 4076 JNI_END 4077 4078 4079 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz)) 4080 JNIWrapper("UnregisterNatives"); 4081 #ifndef USDT2 4082 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz); 4083 #else /* USDT2 */ 4084 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY( 4085 env, clazz); 4086 #endif /* USDT2 */ 4087 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 4088 //%note jni_2 4089 if (k->oop_is_instance()) { 4090 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) { 4091 Method* m = InstanceKlass::cast(k)->methods()->at(index); 4092 if (m->is_native()) { 4093 m->clear_native_function(); 4094 m->set_signature_handler(NULL); 4095 } 4096 } 4097 } 4098 #ifndef USDT2 4099 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0); 4100 #else /* USDT2 */ 4101 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN( 4102 0); 4103 #endif /* USDT2 */ 4104 return 0; 4105 JNI_END 4106 4107 // 4108 // Monitor functions 4109 // 4110 4111 #ifndef USDT2 4112 DT_RETURN_MARK_DECL(MonitorEnter, jint); 4113 #else /* USDT2 */ 4114 DT_RETURN_MARK_DECL(MonitorEnter, jint 4115 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref)); 4116 #endif /* USDT2 */ 4117 4118 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj)) 4119 #ifndef USDT2 4120 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj); 4121 #else /* USDT2 */ 4122 HOTSPOT_JNI_MONITORENTER_ENTRY( 4123 env, jobj); 4124 #endif /* USDT2 */ 4125 jint ret = JNI_ERR; 4126 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret); 4127 4128 // If the object is null, we can't do anything with it 4129 if (jobj == NULL) { 4130 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4131 } 4132 4133 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); 4134 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR)); 4135 ret = JNI_OK; 4136 return ret; 4137 JNI_END 4138 4139 #ifndef USDT2 4140 DT_RETURN_MARK_DECL(MonitorExit, jint); 4141 #else /* USDT2 */ 4142 DT_RETURN_MARK_DECL(MonitorExit, jint 4143 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref)); 4144 #endif /* USDT2 */ 4145 4146 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj)) 4147 #ifndef USDT2 4148 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj); 4149 #else /* USDT2 */ 4150 HOTSPOT_JNI_MONITOREXIT_ENTRY( 4151 env, jobj); 4152 #endif /* USDT2 */ 4153 jint ret = JNI_ERR; 4154 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret); 4155 4156 // Don't do anything with a null object 4157 if (jobj == NULL) { 4158 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4159 } 4160 4161 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); 4162 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR)); 4163 4164 ret = JNI_OK; 4165 return ret; 4166 JNI_END 4167 4168 // 4169 // Extensions 4170 // 4171 4172 #ifndef USDT2 4173 DT_VOID_RETURN_MARK_DECL(GetStringRegion); 4174 #else /* USDT2 */ 4175 DT_VOID_RETURN_MARK_DECL(GetStringRegion 4176 , HOTSPOT_JNI_GETSTRINGREGION_RETURN()); 4177 #endif /* USDT2 */ 4178 4179 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf)) 4180 JNIWrapper("GetStringRegion"); 4181 #ifndef USDT2 4182 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf); 4183 #else /* USDT2 */ 4184 HOTSPOT_JNI_GETSTRINGREGION_ENTRY( 4185 env, string, start, len, buf); 4186 #endif /* USDT2 */ 4187 DT_VOID_RETURN_MARK(GetStringRegion); 4188 oop s = JNIHandles::resolve_non_null(string); 4189 int s_len = java_lang_String::length(s); 4190 if (start < 0 || len < 0 || start + len > s_len) { 4191 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4192 } else { 4193 if (len > 0) { 4194 int s_offset = java_lang_String::offset(s); 4195 typeArrayOop s_value = java_lang_String::value(s); 4196 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len); 4197 } 4198 } 4199 JNI_END 4200 4201 #ifndef USDT2 4202 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion); 4203 #else /* USDT2 */ 4204 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion 4205 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN()); 4206 #endif /* USDT2 */ 4207 4208 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf)) 4209 JNIWrapper("GetStringUTFRegion"); 4210 #ifndef USDT2 4211 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf); 4212 #else /* USDT2 */ 4213 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY( 4214 env, string, start, len, buf); 4215 #endif /* USDT2 */ 4216 DT_VOID_RETURN_MARK(GetStringUTFRegion); 4217 oop s = JNIHandles::resolve_non_null(string); 4218 int s_len = java_lang_String::length(s); 4219 if (start < 0 || len < 0 || start + len > s_len) { 4220 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4221 } else { 4222 //%note jni_7 4223 if (len > 0) { 4224 ResourceMark rm(THREAD); 4225 char *utf_region = java_lang_String::as_utf8_string(s, start, len); 4226 int utf_len = (int)strlen(utf_region); 4227 memcpy(buf, utf_region, utf_len); 4228 buf[utf_len] = 0; 4229 } else { 4230 // JDK null-terminates the buffer even in len is zero 4231 if (buf != NULL) { 4232 buf[0] = 0; 4233 } 4234 } 4235 } 4236 JNI_END 4237 4238 4239 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)) 4240 JNIWrapper("GetPrimitiveArrayCritical"); 4241 #ifndef USDT2 4242 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy); 4243 #else /* USDT2 */ 4244 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY( 4245 env, array, (uintptr_t *) isCopy); 4246 #endif /* USDT2 */ 4247 GC_locker::lock_critical(thread); 4248 if (isCopy != NULL) { 4249 *isCopy = JNI_FALSE; 4250 } 4251 oop a = JNIHandles::resolve_non_null(array); 4252 assert(a->is_array(), "just checking"); 4253 BasicType type; 4254 if (a->is_objArray()) { 4255 type = T_OBJECT; 4256 } else { 4257 type = TypeArrayKlass::cast(a->klass())->element_type(); 4258 } 4259 void* ret = arrayOop(a)->base(type); 4260 #ifndef USDT2 4261 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret); 4262 #else /* USDT2 */ 4263 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN( 4264 ret); 4265 #endif /* USDT2 */ 4266 return ret; 4267 JNI_END 4268 4269 4270 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)) 4271 JNIWrapper("ReleasePrimitiveArrayCritical"); 4272 #ifndef USDT2 4273 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode); 4274 #else /* USDT2 */ 4275 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY( 4276 env, array, carray, mode); 4277 #endif /* USDT2 */ 4278 // The array, carray and mode arguments are ignored 4279 GC_locker::unlock_critical(thread); 4280 #ifndef USDT2 4281 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return); 4282 #else /* USDT2 */ 4283 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN( 4284 ); 4285 #endif /* USDT2 */ 4286 JNI_END 4287 4288 4289 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy)) 4290 JNIWrapper("GetStringCritical"); 4291 #ifndef USDT2 4292 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy); 4293 #else /* USDT2 */ 4294 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY( 4295 env, string, (uintptr_t *) isCopy); 4296 #endif /* USDT2 */ 4297 GC_locker::lock_critical(thread); 4298 if (isCopy != NULL) { 4299 *isCopy = JNI_FALSE; 4300 } 4301 oop s = JNIHandles::resolve_non_null(string); 4302 int s_len = java_lang_String::length(s); 4303 typeArrayOop s_value = java_lang_String::value(s); 4304 int s_offset = java_lang_String::offset(s); 4305 const jchar* ret; 4306 if (s_len > 0) { 4307 ret = s_value->char_at_addr(s_offset); 4308 } else { 4309 ret = (jchar*) s_value->base(T_CHAR); 4310 } 4311 #ifndef USDT2 4312 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret); 4313 #else /* USDT2 */ 4314 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN( 4315 (uint16_t *) ret); 4316 #endif /* USDT2 */ 4317 return ret; 4318 JNI_END 4319 4320 4321 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars)) 4322 JNIWrapper("ReleaseStringCritical"); 4323 #ifndef USDT2 4324 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars); 4325 #else /* USDT2 */ 4326 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY( 4327 env, str, (uint16_t *) chars); 4328 #endif /* USDT2 */ 4329 // The str and chars arguments are ignored 4330 GC_locker::unlock_critical(thread); 4331 #ifndef USDT2 4332 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return); 4333 #else /* USDT2 */ 4334 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN( 4335 ); 4336 #endif /* USDT2 */ 4337 JNI_END 4338 4339 4340 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref)) 4341 JNIWrapper("jni_NewWeakGlobalRef"); 4342 #ifndef USDT2 4343 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref); 4344 #else /* USDT2 */ 4345 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY( 4346 env, ref); 4347 #endif /* USDT2 */ 4348 Handle ref_handle(thread, JNIHandles::resolve(ref)); 4349 jweak ret = JNIHandles::make_weak_global(ref_handle); 4350 #ifndef USDT2 4351 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret); 4352 #else /* USDT2 */ 4353 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN( 4354 ret); 4355 #endif /* USDT2 */ 4356 return ret; 4357 JNI_END 4358 4359 // Must be JNI_ENTRY (with HandleMark) 4360 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref)) 4361 JNIWrapper("jni_DeleteWeakGlobalRef"); 4362 #ifndef USDT2 4363 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref); 4364 #else /* USDT2 */ 4365 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY( 4366 env, ref); 4367 #endif /* USDT2 */ 4368 JNIHandles::destroy_weak_global(ref); 4369 #ifndef USDT2 4370 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return); 4371 #else /* USDT2 */ 4372 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN( 4373 ); 4374 #endif /* USDT2 */ 4375 JNI_END 4376 4377 4378 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env)) 4379 JNIWrapper("jni_ExceptionCheck"); 4380 #ifndef USDT2 4381 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env); 4382 #else /* USDT2 */ 4383 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY( 4384 env); 4385 #endif /* USDT2 */ 4386 jni_check_async_exceptions(thread); 4387 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE; 4388 #ifndef USDT2 4389 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret); 4390 #else /* USDT2 */ 4391 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN( 4392 ret); 4393 #endif /* USDT2 */ 4394 return ret; 4395 JNI_END 4396 4397 4398 // Initialization state for three routines below relating to 4399 // java.nio.DirectBuffers 4400 static jint directBufferSupportInitializeStarted = 0; 4401 static volatile jint directBufferSupportInitializeEnded = 0; 4402 static volatile jint directBufferSupportInitializeFailed = 0; 4403 static jclass bufferClass = NULL; 4404 static jclass directBufferClass = NULL; 4405 static jclass directByteBufferClass = NULL; 4406 static jmethodID directByteBufferConstructor = NULL; 4407 static jfieldID directBufferAddressField = NULL; 4408 static jfieldID bufferCapacityField = NULL; 4409 4410 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) { 4411 Handle loader; // null (bootstrap) loader 4412 Handle protection_domain; // null protection domain 4413 4414 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 4415 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL); 4416 4417 if (TraceClassResolution && result != NULL) { 4418 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 4419 } 4420 return result; 4421 } 4422 4423 // These lookups are done with the NULL (bootstrap) ClassLoader to 4424 // circumvent any security checks that would be done by jni_FindClass. 4425 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env)) 4426 { 4427 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; } 4428 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; } 4429 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; } 4430 return true; 4431 } 4432 JNI_END 4433 4434 4435 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) { 4436 if (directBufferSupportInitializeFailed) { 4437 return false; 4438 } 4439 4440 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) { 4441 if (!lookupDirectBufferClasses(env)) { 4442 directBufferSupportInitializeFailed = 1; 4443 return false; 4444 } 4445 4446 // Make global references for these 4447 bufferClass = (jclass) env->NewGlobalRef(bufferClass); 4448 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass); 4449 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass); 4450 4451 // Get needed field and method IDs 4452 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V"); 4453 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J"); 4454 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I"); 4455 4456 if ((directByteBufferConstructor == NULL) || 4457 (directBufferAddressField == NULL) || 4458 (bufferCapacityField == NULL)) { 4459 directBufferSupportInitializeFailed = 1; 4460 return false; 4461 } 4462 4463 directBufferSupportInitializeEnded = 1; 4464 } else { 4465 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) { 4466 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls 4467 // os::sleep which requires the VM state transition. On other platforms, it 4468 // is not necessary. The following call to change the VM state is purposely 4469 // put inside the loop to avoid potential deadlock when multiple threads 4470 // try to call this method. See 6791815 for more details. 4471 ThreadInVMfromNative tivn(thread); 4472 os::yield_all(); 4473 } 4474 } 4475 4476 return !directBufferSupportInitializeFailed; 4477 } 4478 4479 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity) 4480 { 4481 // thread_from_jni_environment() will block if VM is gone. 4482 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4483 4484 JNIWrapper("jni_NewDirectByteBuffer"); 4485 #ifndef USDT2 4486 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity); 4487 #else /* USDT2 */ 4488 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY( 4489 env, address, capacity); 4490 #endif /* USDT2 */ 4491 4492 if (!directBufferSupportInitializeEnded) { 4493 if (!initializeDirectBufferSupport(env, thread)) { 4494 #ifndef USDT2 4495 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL); 4496 #else /* USDT2 */ 4497 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4498 NULL); 4499 #endif /* USDT2 */ 4500 return NULL; 4501 } 4502 } 4503 4504 // Being paranoid about accidental sign extension on address 4505 jlong addr = (jlong) ((uintptr_t) address); 4506 // NOTE that package-private DirectByteBuffer constructor currently 4507 // takes int capacity 4508 jint cap = (jint) capacity; 4509 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap); 4510 #ifndef USDT2 4511 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret); 4512 #else /* USDT2 */ 4513 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4514 ret); 4515 #endif /* USDT2 */ 4516 return ret; 4517 } 4518 4519 #ifndef USDT2 4520 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*); 4521 #else /* USDT2 */ 4522 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void* 4523 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref)); 4524 #endif /* USDT2 */ 4525 4526 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf) 4527 { 4528 // thread_from_jni_environment() will block if VM is gone. 4529 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4530 4531 JNIWrapper("jni_GetDirectBufferAddress"); 4532 #ifndef USDT2 4533 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf); 4534 #else /* USDT2 */ 4535 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY( 4536 env, buf); 4537 #endif /* USDT2 */ 4538 void* ret = NULL; 4539 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret); 4540 4541 if (!directBufferSupportInitializeEnded) { 4542 if (!initializeDirectBufferSupport(env, thread)) { 4543 return 0; 4544 } 4545 } 4546 4547 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) { 4548 return 0; 4549 } 4550 4551 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField); 4552 return ret; 4553 } 4554 4555 #ifndef USDT2 4556 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong); 4557 #else /* USDT2 */ 4558 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong 4559 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref)); 4560 #endif /* USDT2 */ 4561 4562 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf) 4563 { 4564 // thread_from_jni_environment() will block if VM is gone. 4565 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4566 4567 JNIWrapper("jni_GetDirectBufferCapacity"); 4568 #ifndef USDT2 4569 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf); 4570 #else /* USDT2 */ 4571 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY( 4572 env, buf); 4573 #endif /* USDT2 */ 4574 jlong ret = -1; 4575 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret); 4576 4577 if (!directBufferSupportInitializeEnded) { 4578 if (!initializeDirectBufferSupport(env, thread)) { 4579 ret = 0; 4580 return ret; 4581 } 4582 } 4583 4584 if (buf == NULL) { 4585 return -1; 4586 } 4587 4588 if (!env->IsInstanceOf(buf, directBufferClass)) { 4589 return -1; 4590 } 4591 4592 // NOTE that capacity is currently an int in the implementation 4593 ret = env->GetIntField(buf, bufferCapacityField); 4594 return ret; 4595 } 4596 4597 4598 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env)) 4599 JNIWrapper("GetVersion"); 4600 #ifndef USDT2 4601 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env); 4602 #else /* USDT2 */ 4603 HOTSPOT_JNI_GETVERSION_ENTRY( 4604 env); 4605 #endif /* USDT2 */ 4606 #ifndef USDT2 4607 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion); 4608 #else /* USDT2 */ 4609 HOTSPOT_JNI_GETVERSION_RETURN( 4610 CurrentVersion); 4611 #endif /* USDT2 */ 4612 return CurrentVersion; 4613 JNI_END 4614 4615 extern struct JavaVM_ main_vm; 4616 4617 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm)) 4618 JNIWrapper("jni_GetJavaVM"); 4619 #ifndef USDT2 4620 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm); 4621 #else /* USDT2 */ 4622 HOTSPOT_JNI_GETJAVAVM_ENTRY( 4623 env, (void **) vm); 4624 #endif /* USDT2 */ 4625 *vm = (JavaVM *)(&main_vm); 4626 #ifndef USDT2 4627 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK); 4628 #else /* USDT2 */ 4629 HOTSPOT_JNI_GETJAVAVM_RETURN( 4630 JNI_OK); 4631 #endif /* USDT2 */ 4632 return JNI_OK; 4633 JNI_END 4634 4635 // Structure containing all jni functions 4636 struct JNINativeInterface_ jni_NativeInterface = { 4637 NULL, 4638 NULL, 4639 NULL, 4640 4641 NULL, 4642 4643 jni_GetVersion, 4644 4645 jni_DefineClass, 4646 jni_FindClass, 4647 4648 jni_FromReflectedMethod, 4649 jni_FromReflectedField, 4650 4651 jni_ToReflectedMethod, 4652 4653 jni_GetSuperclass, 4654 jni_IsAssignableFrom, 4655 4656 jni_ToReflectedField, 4657 4658 jni_Throw, 4659 jni_ThrowNew, 4660 jni_ExceptionOccurred, 4661 jni_ExceptionDescribe, 4662 jni_ExceptionClear, 4663 jni_FatalError, 4664 4665 jni_PushLocalFrame, 4666 jni_PopLocalFrame, 4667 4668 jni_NewGlobalRef, 4669 jni_DeleteGlobalRef, 4670 jni_DeleteLocalRef, 4671 jni_IsSameObject, 4672 4673 jni_NewLocalRef, 4674 jni_EnsureLocalCapacity, 4675 4676 jni_AllocObject, 4677 jni_NewObject, 4678 jni_NewObjectV, 4679 jni_NewObjectA, 4680 4681 jni_GetObjectClass, 4682 jni_IsInstanceOf, 4683 4684 jni_GetMethodID, 4685 4686 jni_CallObjectMethod, 4687 jni_CallObjectMethodV, 4688 jni_CallObjectMethodA, 4689 jni_CallBooleanMethod, 4690 jni_CallBooleanMethodV, 4691 jni_CallBooleanMethodA, 4692 jni_CallByteMethod, 4693 jni_CallByteMethodV, 4694 jni_CallByteMethodA, 4695 jni_CallCharMethod, 4696 jni_CallCharMethodV, 4697 jni_CallCharMethodA, 4698 jni_CallShortMethod, 4699 jni_CallShortMethodV, 4700 jni_CallShortMethodA, 4701 jni_CallIntMethod, 4702 jni_CallIntMethodV, 4703 jni_CallIntMethodA, 4704 jni_CallLongMethod, 4705 jni_CallLongMethodV, 4706 jni_CallLongMethodA, 4707 jni_CallFloatMethod, 4708 jni_CallFloatMethodV, 4709 jni_CallFloatMethodA, 4710 jni_CallDoubleMethod, 4711 jni_CallDoubleMethodV, 4712 jni_CallDoubleMethodA, 4713 jni_CallVoidMethod, 4714 jni_CallVoidMethodV, 4715 jni_CallVoidMethodA, 4716 4717 jni_CallNonvirtualObjectMethod, 4718 jni_CallNonvirtualObjectMethodV, 4719 jni_CallNonvirtualObjectMethodA, 4720 jni_CallNonvirtualBooleanMethod, 4721 jni_CallNonvirtualBooleanMethodV, 4722 jni_CallNonvirtualBooleanMethodA, 4723 jni_CallNonvirtualByteMethod, 4724 jni_CallNonvirtualByteMethodV, 4725 jni_CallNonvirtualByteMethodA, 4726 jni_CallNonvirtualCharMethod, 4727 jni_CallNonvirtualCharMethodV, 4728 jni_CallNonvirtualCharMethodA, 4729 jni_CallNonvirtualShortMethod, 4730 jni_CallNonvirtualShortMethodV, 4731 jni_CallNonvirtualShortMethodA, 4732 jni_CallNonvirtualIntMethod, 4733 jni_CallNonvirtualIntMethodV, 4734 jni_CallNonvirtualIntMethodA, 4735 jni_CallNonvirtualLongMethod, 4736 jni_CallNonvirtualLongMethodV, 4737 jni_CallNonvirtualLongMethodA, 4738 jni_CallNonvirtualFloatMethod, 4739 jni_CallNonvirtualFloatMethodV, 4740 jni_CallNonvirtualFloatMethodA, 4741 jni_CallNonvirtualDoubleMethod, 4742 jni_CallNonvirtualDoubleMethodV, 4743 jni_CallNonvirtualDoubleMethodA, 4744 jni_CallNonvirtualVoidMethod, 4745 jni_CallNonvirtualVoidMethodV, 4746 jni_CallNonvirtualVoidMethodA, 4747 4748 jni_GetFieldID, 4749 4750 jni_GetObjectField, 4751 jni_GetBooleanField, 4752 jni_GetByteField, 4753 jni_GetCharField, 4754 jni_GetShortField, 4755 jni_GetIntField, 4756 jni_GetLongField, 4757 jni_GetFloatField, 4758 jni_GetDoubleField, 4759 4760 jni_SetObjectField, 4761 jni_SetBooleanField, 4762 jni_SetByteField, 4763 jni_SetCharField, 4764 jni_SetShortField, 4765 jni_SetIntField, 4766 jni_SetLongField, 4767 jni_SetFloatField, 4768 jni_SetDoubleField, 4769 4770 jni_GetStaticMethodID, 4771 4772 jni_CallStaticObjectMethod, 4773 jni_CallStaticObjectMethodV, 4774 jni_CallStaticObjectMethodA, 4775 jni_CallStaticBooleanMethod, 4776 jni_CallStaticBooleanMethodV, 4777 jni_CallStaticBooleanMethodA, 4778 jni_CallStaticByteMethod, 4779 jni_CallStaticByteMethodV, 4780 jni_CallStaticByteMethodA, 4781 jni_CallStaticCharMethod, 4782 jni_CallStaticCharMethodV, 4783 jni_CallStaticCharMethodA, 4784 jni_CallStaticShortMethod, 4785 jni_CallStaticShortMethodV, 4786 jni_CallStaticShortMethodA, 4787 jni_CallStaticIntMethod, 4788 jni_CallStaticIntMethodV, 4789 jni_CallStaticIntMethodA, 4790 jni_CallStaticLongMethod, 4791 jni_CallStaticLongMethodV, 4792 jni_CallStaticLongMethodA, 4793 jni_CallStaticFloatMethod, 4794 jni_CallStaticFloatMethodV, 4795 jni_CallStaticFloatMethodA, 4796 jni_CallStaticDoubleMethod, 4797 jni_CallStaticDoubleMethodV, 4798 jni_CallStaticDoubleMethodA, 4799 jni_CallStaticVoidMethod, 4800 jni_CallStaticVoidMethodV, 4801 jni_CallStaticVoidMethodA, 4802 4803 jni_GetStaticFieldID, 4804 4805 jni_GetStaticObjectField, 4806 jni_GetStaticBooleanField, 4807 jni_GetStaticByteField, 4808 jni_GetStaticCharField, 4809 jni_GetStaticShortField, 4810 jni_GetStaticIntField, 4811 jni_GetStaticLongField, 4812 jni_GetStaticFloatField, 4813 jni_GetStaticDoubleField, 4814 4815 jni_SetStaticObjectField, 4816 jni_SetStaticBooleanField, 4817 jni_SetStaticByteField, 4818 jni_SetStaticCharField, 4819 jni_SetStaticShortField, 4820 jni_SetStaticIntField, 4821 jni_SetStaticLongField, 4822 jni_SetStaticFloatField, 4823 jni_SetStaticDoubleField, 4824 4825 jni_NewString, 4826 jni_GetStringLength, 4827 jni_GetStringChars, 4828 jni_ReleaseStringChars, 4829 4830 jni_NewStringUTF, 4831 jni_GetStringUTFLength, 4832 jni_GetStringUTFChars, 4833 jni_ReleaseStringUTFChars, 4834 4835 jni_GetArrayLength, 4836 4837 jni_NewObjectArray, 4838 jni_GetObjectArrayElement, 4839 jni_SetObjectArrayElement, 4840 4841 jni_NewBooleanArray, 4842 jni_NewByteArray, 4843 jni_NewCharArray, 4844 jni_NewShortArray, 4845 jni_NewIntArray, 4846 jni_NewLongArray, 4847 jni_NewFloatArray, 4848 jni_NewDoubleArray, 4849 4850 jni_GetBooleanArrayElements, 4851 jni_GetByteArrayElements, 4852 jni_GetCharArrayElements, 4853 jni_GetShortArrayElements, 4854 jni_GetIntArrayElements, 4855 jni_GetLongArrayElements, 4856 jni_GetFloatArrayElements, 4857 jni_GetDoubleArrayElements, 4858 4859 jni_ReleaseBooleanArrayElements, 4860 jni_ReleaseByteArrayElements, 4861 jni_ReleaseCharArrayElements, 4862 jni_ReleaseShortArrayElements, 4863 jni_ReleaseIntArrayElements, 4864 jni_ReleaseLongArrayElements, 4865 jni_ReleaseFloatArrayElements, 4866 jni_ReleaseDoubleArrayElements, 4867 4868 jni_GetBooleanArrayRegion, 4869 jni_GetByteArrayRegion, 4870 jni_GetCharArrayRegion, 4871 jni_GetShortArrayRegion, 4872 jni_GetIntArrayRegion, 4873 jni_GetLongArrayRegion, 4874 jni_GetFloatArrayRegion, 4875 jni_GetDoubleArrayRegion, 4876 4877 jni_SetBooleanArrayRegion, 4878 jni_SetByteArrayRegion, 4879 jni_SetCharArrayRegion, 4880 jni_SetShortArrayRegion, 4881 jni_SetIntArrayRegion, 4882 jni_SetLongArrayRegion, 4883 jni_SetFloatArrayRegion, 4884 jni_SetDoubleArrayRegion, 4885 4886 jni_RegisterNatives, 4887 jni_UnregisterNatives, 4888 4889 jni_MonitorEnter, 4890 jni_MonitorExit, 4891 4892 jni_GetJavaVM, 4893 4894 jni_GetStringRegion, 4895 jni_GetStringUTFRegion, 4896 4897 jni_GetPrimitiveArrayCritical, 4898 jni_ReleasePrimitiveArrayCritical, 4899 4900 jni_GetStringCritical, 4901 jni_ReleaseStringCritical, 4902 4903 jni_NewWeakGlobalRef, 4904 jni_DeleteWeakGlobalRef, 4905 4906 jni_ExceptionCheck, 4907 4908 jni_NewDirectByteBuffer, 4909 jni_GetDirectBufferAddress, 4910 jni_GetDirectBufferCapacity, 4911 4912 // New 1_6 features 4913 4914 jni_GetObjectRefType 4915 }; 4916 4917 4918 // For jvmti use to modify jni function table. 4919 // Java threads in native contiues to run until it is transitioned 4920 // to VM at safepoint. Before the transition or before it is blocked 4921 // for safepoint it may access jni function table. VM could crash if 4922 // any java thread access the jni function table in the middle of memcpy. 4923 // To avoid this each function pointers are copied automically. 4924 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) { 4925 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); 4926 intptr_t *a = (intptr_t *) jni_functions(); 4927 intptr_t *b = (intptr_t *) new_jni_NativeInterface; 4928 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) { 4929 Atomic::store_ptr(*b++, a++); 4930 } 4931 } 4932 4933 void quicken_jni_functions() { 4934 // Replace Get<Primitive>Field with fast versions 4935 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access() 4936 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls 4937 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2) 4938 // windows x86 currently needs SEH wrapper and the gain of the fast 4939 // versions currently isn't certain for server vm on uniprocessor. 4940 && os::is_MP() 4941 #endif 4942 ) { 4943 address func; 4944 func = JNI_FastGetField::generate_fast_get_boolean_field(); 4945 if (func != (address)-1) { 4946 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func; 4947 } 4948 func = JNI_FastGetField::generate_fast_get_byte_field(); 4949 if (func != (address)-1) { 4950 jni_NativeInterface.GetByteField = (GetByteField_t)func; 4951 } 4952 func = JNI_FastGetField::generate_fast_get_char_field(); 4953 if (func != (address)-1) { 4954 jni_NativeInterface.GetCharField = (GetCharField_t)func; 4955 } 4956 func = JNI_FastGetField::generate_fast_get_short_field(); 4957 if (func != (address)-1) { 4958 jni_NativeInterface.GetShortField = (GetShortField_t)func; 4959 } 4960 func = JNI_FastGetField::generate_fast_get_int_field(); 4961 if (func != (address)-1) { 4962 jni_NativeInterface.GetIntField = (GetIntField_t)func; 4963 } 4964 func = JNI_FastGetField::generate_fast_get_long_field(); 4965 if (func != (address)-1) { 4966 jni_NativeInterface.GetLongField = (GetLongField_t)func; 4967 } 4968 func = JNI_FastGetField::generate_fast_get_float_field(); 4969 if (func != (address)-1) { 4970 jni_NativeInterface.GetFloatField = (GetFloatField_t)func; 4971 } 4972 func = JNI_FastGetField::generate_fast_get_double_field(); 4973 if (func != (address)-1) { 4974 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func; 4975 } 4976 } 4977 } 4978 4979 // Returns the function structure 4980 struct JNINativeInterface_* jni_functions() { 4981 #if INCLUDE_JNI_CHECK 4982 if (CheckJNICalls) return jni_functions_check(); 4983 #endif // INCLUDE_JNI_CHECK 4984 return &jni_NativeInterface; 4985 } 4986 4987 // Returns the function structure 4988 struct JNINativeInterface_* jni_functions_nocheck() { 4989 return &jni_NativeInterface; 4990 } 4991 4992 4993 // Invocation API 4994 4995 4996 // Forward declaration 4997 extern const struct JNIInvokeInterface_ jni_InvokeInterface; 4998 4999 // Global invocation API vars 5000 volatile jint vm_created = 0; 5001 // Indicate whether it is safe to recreate VM 5002 volatile jint safe_to_recreate_vm = 1; 5003 struct JavaVM_ main_vm = {&jni_InvokeInterface}; 5004 5005 5006 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */ 5007 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL }; 5008 5009 #ifndef USDT2 5010 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*); 5011 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint); 5012 #else /* USDT2 */ 5013 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint 5014 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref)); 5015 #endif /* USDT2 */ 5016 5017 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) { 5018 #ifndef USDT2 5019 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_); 5020 #else /* USDT2 */ 5021 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY( 5022 args_); 5023 #endif /* USDT2 */ 5024 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_; 5025 jint ret = JNI_ERR; 5026 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret); 5027 5028 if (Threads::is_supported_jni_version(args->version)) { 5029 ret = JNI_OK; 5030 } 5031 // 1.1 style no longer supported in hotspot. 5032 // According the JNI spec, we should update args->version on return. 5033 // We also use the structure to communicate with launcher about default 5034 // stack size. 5035 if (args->version == JNI_VERSION_1_1) { 5036 args->version = JNI_VERSION_1_2; 5037 // javaStackSize is int in arguments structure 5038 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow"); 5039 args->javaStackSize = (jint)(ThreadStackSize * K); 5040 } 5041 return ret; 5042 } 5043 5044 #ifndef PRODUCT 5045 5046 #include "gc_implementation/shared/gcTimer.hpp" 5047 #include "gc_interface/collectedHeap.hpp" 5048 #if INCLUDE_ALL_GCS 5049 #include "gc_implementation/g1/heapRegionRemSet.hpp" 5050 #endif 5051 #include "utilities/quickSort.hpp" 5052 #include "utilities/ostream.hpp" 5053 #if INCLUDE_VM_STRUCTS 5054 #include "runtime/vmStructs.hpp" 5055 #endif 5056 5057 #define run_unit_test(unit_test_function_call) \ 5058 tty->print_cr("Running test: " #unit_test_function_call); \ 5059 unit_test_function_call 5060 5061 // Forward declaration 5062 void TestReservedSpace_test(); 5063 void TestReserveMemorySpecial_test(); 5064 void TestVirtualSpace_test(); 5065 void TestMetaspaceAux_test(); 5066 void TestMetachunk_test(); 5067 void TestVirtualSpaceNode_test(); 5068 void TestOldFreeSpaceCalculation_test(); 5069 #if INCLUDE_ALL_GCS 5070 void TestG1BiasedArray_test(); 5071 #endif 5072 5073 void execute_internal_vm_tests() { 5074 if (ExecuteInternalVMTests) { 5075 tty->print_cr("Running internal VM tests"); 5076 run_unit_test(TestReservedSpace_test()); 5077 run_unit_test(TestReserveMemorySpecial_test()); 5078 run_unit_test(TestVirtualSpace_test()); 5079 run_unit_test(TestMetaspaceAux_test()); 5080 run_unit_test(TestMetachunk_test()); 5081 run_unit_test(TestVirtualSpaceNode_test()); 5082 run_unit_test(GlobalDefinitions::test_globals()); 5083 run_unit_test(GCTimerAllTest::all()); 5084 run_unit_test(arrayOopDesc::test_max_array_length()); 5085 run_unit_test(CollectedHeap::test_is_in()); 5086 run_unit_test(QuickSort::test_quick_sort()); 5087 run_unit_test(AltHashing::test_alt_hash()); 5088 run_unit_test(test_loggc_filename()); 5089 run_unit_test(TestOldFreeSpaceCalculation_test()); 5090 #if INCLUDE_VM_STRUCTS 5091 run_unit_test(VMStructs::test()); 5092 #endif 5093 #if INCLUDE_ALL_GCS 5094 run_unit_test(TestG1BiasedArray_test()); 5095 run_unit_test(HeapRegionRemSet::test_prt()); 5096 #endif 5097 tty->print_cr("All internal VM tests passed"); 5098 } 5099 } 5100 5101 #undef run_unit_test 5102 5103 #endif 5104 5105 #ifndef USDT2 5106 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5107 DT_RETURN_MARK_DECL(CreateJavaVM, jint); 5108 #else /* USDT2 */ 5109 DT_RETURN_MARK_DECL(CreateJavaVM, jint 5110 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref)); 5111 #endif /* USDT2 */ 5112 5113 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) { 5114 #ifndef USDT2 5115 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5116 #else /* USDT2 */ 5117 HOTSPOT_JNI_CREATEJAVAVM_ENTRY( 5118 (void **) vm, penv, args); 5119 #endif /* USDT2 */ 5120 5121 jint result = JNI_ERR; 5122 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result); 5123 5124 // We're about to use Atomic::xchg for synchronization. Some Zero 5125 // platforms use the GCC builtin __sync_lock_test_and_set for this, 5126 // but __sync_lock_test_and_set is not guaranteed to do what we want 5127 // on all architectures. So we check it works before relying on it. 5128 #if defined(ZERO) && defined(ASSERT) 5129 { 5130 jint a = 0xcafebabe; 5131 jint b = Atomic::xchg(0xdeadbeef, &a); 5132 void *c = &a; 5133 void *d = Atomic::xchg_ptr(&b, &c); 5134 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works"); 5135 assert(c == &b && d == &a, "Atomic::xchg_ptr() works"); 5136 } 5137 #endif // ZERO && ASSERT 5138 5139 // At the moment it's only possible to have one Java VM, 5140 // since some of the runtime state is in global variables. 5141 5142 // We cannot use our mutex locks here, since they only work on 5143 // Threads. We do an atomic compare and exchange to ensure only 5144 // one thread can call this method at a time 5145 5146 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms 5147 // the add/dec implementations are dependent on whether we are running 5148 // on a multiprocessor, and at this stage of initialization the os::is_MP 5149 // function used to determine this will always return false. Atomic::xchg 5150 // does not have this problem. 5151 if (Atomic::xchg(1, &vm_created) == 1) { 5152 return JNI_EEXIST; // already created, or create attempt in progress 5153 } 5154 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) { 5155 return JNI_ERR; // someone tried and failed and retry not allowed. 5156 } 5157 5158 assert(vm_created == 1, "vm_created is true during the creation"); 5159 5160 /** 5161 * Certain errors during initialization are recoverable and do not 5162 * prevent this method from being called again at a later time 5163 * (perhaps with different arguments). However, at a certain 5164 * point during initialization if an error occurs we cannot allow 5165 * this function to be called again (or it will crash). In those 5166 * situations, the 'canTryAgain' flag is set to false, which atomically 5167 * sets safe_to_recreate_vm to 1, such that any new call to 5168 * JNI_CreateJavaVM will immediately fail using the above logic. 5169 */ 5170 bool can_try_again = true; 5171 5172 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again); 5173 if (result == JNI_OK) { 5174 JavaThread *thread = JavaThread::current(); 5175 /* thread is thread_in_vm here */ 5176 *vm = (JavaVM *)(&main_vm); 5177 *(JNIEnv**)penv = thread->jni_environment(); 5178 5179 // Tracks the time application was running before GC 5180 RuntimeService::record_application_start(); 5181 5182 // Notify JVMTI 5183 if (JvmtiExport::should_post_thread_life()) { 5184 JvmtiExport::post_thread_start(thread); 5185 } 5186 5187 EventThreadStart event; 5188 if (event.should_commit()) { 5189 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5190 event.commit(); 5191 } 5192 5193 #ifndef PRODUCT 5194 #ifndef TARGET_OS_FAMILY_windows 5195 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f() 5196 #endif 5197 5198 // Check if we should compile all classes on bootclasspath 5199 if (CompileTheWorld) ClassLoader::compile_the_world(); 5200 if (ReplayCompiles) ciReplay::replay(thread); 5201 5202 // Some platforms (like Win*) need a wrapper around these test 5203 // functions in order to properly handle error conditions. 5204 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler); 5205 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests); 5206 #endif 5207 5208 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. 5209 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5210 } else { 5211 if (can_try_again) { 5212 // reset safe_to_recreate_vm to 1 so that retrial would be possible 5213 safe_to_recreate_vm = 1; 5214 } 5215 5216 // Creation failed. We must reset vm_created 5217 *vm = 0; 5218 *(JNIEnv**)penv = 0; 5219 // reset vm_created last to avoid race condition. Use OrderAccess to 5220 // control both compiler and architectural-based reordering. 5221 OrderAccess::release_store(&vm_created, 0); 5222 } 5223 5224 return result; 5225 } 5226 5227 #ifndef USDT2 5228 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5229 JavaVM**, jsize, jsize*); 5230 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); 5231 #endif /* !USDT2 */ 5232 5233 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { 5234 // See bug 4367188, the wrapper can sometimes cause VM crashes 5235 // JNIWrapper("GetCreatedJavaVMs"); 5236 #ifndef USDT2 5237 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5238 vm_buf, bufLen, numVMs); 5239 #else /* USDT2 */ 5240 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY( 5241 (void **) vm_buf, bufLen, (uintptr_t *) numVMs); 5242 #endif /* USDT2 */ 5243 if (vm_created) { 5244 if (numVMs != NULL) *numVMs = 1; 5245 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); 5246 } else { 5247 if (numVMs != NULL) *numVMs = 0; 5248 } 5249 #ifndef USDT2 5250 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); 5251 #else /* USDT2 */ 5252 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN( 5253 JNI_OK); 5254 #endif /* USDT2 */ 5255 return JNI_OK; 5256 } 5257 5258 extern "C" { 5259 5260 #ifndef USDT2 5261 DT_RETURN_MARK_DECL(DestroyJavaVM, jint); 5262 #else /* USDT2 */ 5263 DT_RETURN_MARK_DECL(DestroyJavaVM, jint 5264 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref)); 5265 #endif /* USDT2 */ 5266 5267 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { 5268 #ifndef USDT2 5269 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); 5270 #else /* USDT2 */ 5271 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY( 5272 vm); 5273 #endif /* USDT2 */ 5274 jint res = JNI_ERR; 5275 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); 5276 5277 if (!vm_created) { 5278 res = JNI_ERR; 5279 return res; 5280 } 5281 5282 JNIWrapper("DestroyJavaVM"); 5283 JNIEnv *env; 5284 JavaVMAttachArgs destroyargs; 5285 destroyargs.version = CurrentVersion; 5286 destroyargs.name = (char *)"DestroyJavaVM"; 5287 destroyargs.group = NULL; 5288 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); 5289 if (res != JNI_OK) { 5290 return res; 5291 } 5292 5293 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. 5294 JavaThread* thread = JavaThread::current(); 5295 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5296 if (Threads::destroy_vm()) { 5297 // Should not change thread state, VM is gone 5298 vm_created = false; 5299 res = JNI_OK; 5300 return res; 5301 } else { 5302 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5303 res = JNI_ERR; 5304 return res; 5305 } 5306 } 5307 5308 5309 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { 5310 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; 5311 5312 // Check below commented out from JDK1.2fcs as well 5313 /* 5314 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { 5315 return JNI_EVERSION; 5316 } 5317 */ 5318 5319 Thread* t = ThreadLocalStorage::get_thread_slow(); 5320 if (t != NULL) { 5321 // If the thread has been attached this operation is a no-op 5322 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); 5323 return JNI_OK; 5324 } 5325 5326 // Create a thread and mark it as attaching so it will be skipped by the 5327 // ThreadsListEnumerator - see CR 6404306 5328 JavaThread* thread = new JavaThread(true); 5329 5330 // Set correct safepoint info. The thread is going to call into Java when 5331 // initializing the Java level thread object. Hence, the correct state must 5332 // be set in order for the Safepoint code to deal with it correctly. 5333 thread->set_thread_state(_thread_in_vm); 5334 // Must do this before initialize_thread_local_storage 5335 thread->record_stack_base_and_size(); 5336 5337 thread->initialize_thread_local_storage(); 5338 5339 if (!os::create_attached_thread(thread)) { 5340 delete thread; 5341 return JNI_ERR; 5342 } 5343 // Enable stack overflow checks 5344 thread->create_stack_guard_pages(); 5345 5346 thread->initialize_tlab(); 5347 5348 thread->cache_global_variables(); 5349 5350 // Crucial that we do not have a safepoint check for this thread, since it has 5351 // not been added to the Thread list yet. 5352 { Threads_lock->lock_without_safepoint_check(); 5353 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to 5354 // avoid this thread trying to do a GC before it is added to the thread-list 5355 thread->set_active_handles(JNIHandleBlock::allocate_block()); 5356 Threads::add(thread, daemon); 5357 Threads_lock->unlock(); 5358 } 5359 // Create thread group and name info from attach arguments 5360 oop group = NULL; 5361 char* thread_name = NULL; 5362 if (args != NULL && Threads::is_supported_jni_version(args->version)) { 5363 group = JNIHandles::resolve(args->group); 5364 thread_name = args->name; // may be NULL 5365 } 5366 if (group == NULL) group = Universe::main_thread_group(); 5367 5368 // Create Java level thread object and attach it to this thread 5369 bool attach_failed = false; 5370 { 5371 EXCEPTION_MARK; 5372 HandleMark hm(THREAD); 5373 Handle thread_group(THREAD, group); 5374 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); 5375 if (HAS_PENDING_EXCEPTION) { 5376 CLEAR_PENDING_EXCEPTION; 5377 // cleanup outside the handle mark. 5378 attach_failed = true; 5379 } 5380 } 5381 5382 if (attach_failed) { 5383 // Added missing cleanup 5384 thread->cleanup_failed_attach_current_thread(); 5385 return JNI_ERR; 5386 } 5387 5388 // mark the thread as no longer attaching 5389 // this uses a fence to push the change through so we don't have 5390 // to regrab the threads_lock 5391 thread->set_done_attaching_via_jni(); 5392 5393 // Set java thread status. 5394 java_lang_Thread::set_thread_status(thread->threadObj(), 5395 java_lang_Thread::RUNNABLE); 5396 5397 // Notify the debugger 5398 if (JvmtiExport::should_post_thread_life()) { 5399 JvmtiExport::post_thread_start(thread); 5400 } 5401 5402 EventThreadStart event; 5403 if (event.should_commit()) { 5404 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5405 event.commit(); 5406 } 5407 5408 *(JNIEnv**)penv = thread->jni_environment(); 5409 5410 // Now leaving the VM, so change thread_state. This is normally automatically taken care 5411 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by 5412 // using ThreadStateTransition::transition, we do a callback to the safepoint code if 5413 // needed. 5414 5415 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5416 5417 // Perform any platform dependent FPU setup 5418 os::setup_fpu(); 5419 5420 return JNI_OK; 5421 } 5422 5423 5424 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { 5425 #ifndef USDT2 5426 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); 5427 #else /* USDT2 */ 5428 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY( 5429 vm, penv, _args); 5430 #endif /* USDT2 */ 5431 if (!vm_created) { 5432 #ifndef USDT2 5433 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); 5434 #else /* USDT2 */ 5435 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5436 (uint32_t) JNI_ERR); 5437 #endif /* USDT2 */ 5438 return JNI_ERR; 5439 } 5440 5441 JNIWrapper("AttachCurrentThread"); 5442 jint ret = attach_current_thread(vm, penv, _args, false); 5443 #ifndef USDT2 5444 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); 5445 #else /* USDT2 */ 5446 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5447 ret); 5448 #endif /* USDT2 */ 5449 return ret; 5450 } 5451 5452 5453 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { 5454 #ifndef USDT2 5455 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); 5456 #else /* USDT2 */ 5457 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY( 5458 vm); 5459 #endif /* USDT2 */ 5460 VM_Exit::block_if_vm_exited(); 5461 5462 JNIWrapper("DetachCurrentThread"); 5463 5464 // If the thread has been deattacted the operations is a no-op 5465 if (ThreadLocalStorage::thread() == NULL) { 5466 #ifndef USDT2 5467 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5468 #else /* USDT2 */ 5469 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5470 JNI_OK); 5471 #endif /* USDT2 */ 5472 return JNI_OK; 5473 } 5474 5475 JavaThread* thread = JavaThread::current(); 5476 if (thread->has_last_Java_frame()) { 5477 #ifndef USDT2 5478 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); 5479 #else /* USDT2 */ 5480 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5481 (uint32_t) JNI_ERR); 5482 #endif /* USDT2 */ 5483 // Can't detach a thread that's running java, that can't work. 5484 return JNI_ERR; 5485 } 5486 5487 // Safepoint support. Have to do call-back to safepoint code, if in the 5488 // middel of a safepoint operation 5489 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5490 5491 // XXX: Note that JavaThread::exit() call below removes the guards on the 5492 // stack pages set up via enable_stack_{red,yellow}_zone() calls 5493 // above in jni_AttachCurrentThread. Unfortunately, while the setting 5494 // of the guards is visible in jni_AttachCurrentThread above, 5495 // the removal of the guards is buried below in JavaThread::exit() 5496 // here. The abstraction should be more symmetrically either exposed 5497 // or hidden (e.g. it could probably be hidden in the same 5498 // (platform-dependent) methods where we do alternate stack 5499 // maintenance work?) 5500 thread->exit(false, JavaThread::jni_detach); 5501 delete thread; 5502 5503 #ifndef USDT2 5504 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5505 #else /* USDT2 */ 5506 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5507 JNI_OK); 5508 #endif /* USDT2 */ 5509 return JNI_OK; 5510 } 5511 5512 #ifndef USDT2 5513 DT_RETURN_MARK_DECL(GetEnv, jint); 5514 #else /* USDT2 */ 5515 DT_RETURN_MARK_DECL(GetEnv, jint 5516 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref)); 5517 #endif /* USDT2 */ 5518 5519 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { 5520 #ifndef USDT2 5521 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); 5522 #else /* USDT2 */ 5523 HOTSPOT_JNI_GETENV_ENTRY( 5524 vm, penv, version); 5525 #endif /* USDT2 */ 5526 jint ret = JNI_ERR; 5527 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); 5528 5529 if (!vm_created) { 5530 *penv = NULL; 5531 ret = JNI_EDETACHED; 5532 return ret; 5533 } 5534 5535 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) { 5536 return ret; 5537 } 5538 5539 #ifndef JVMPI_VERSION_1 5540 // need these in order to be polite about older agents 5541 #define JVMPI_VERSION_1 ((jint)0x10000001) 5542 #define JVMPI_VERSION_1_1 ((jint)0x10000002) 5543 #define JVMPI_VERSION_1_2 ((jint)0x10000003) 5544 #endif // !JVMPI_VERSION_1 5545 5546 Thread* thread = ThreadLocalStorage::thread(); 5547 if (thread != NULL && thread->is_Java_thread()) { 5548 if (Threads::is_supported_jni_version_including_1_1(version)) { 5549 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); 5550 ret = JNI_OK; 5551 return ret; 5552 5553 } else if (version == JVMPI_VERSION_1 || 5554 version == JVMPI_VERSION_1_1 || 5555 version == JVMPI_VERSION_1_2) { 5556 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); 5557 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5558 ret = JNI_EVERSION; 5559 return ret; 5560 } else if (JvmtiExport::is_jvmdi_version(version)) { 5561 tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); 5562 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5563 ret = JNI_EVERSION; 5564 return ret; 5565 } else { 5566 *penv = NULL; 5567 ret = JNI_EVERSION; 5568 return ret; 5569 } 5570 } else { 5571 *penv = NULL; 5572 ret = JNI_EDETACHED; 5573 return ret; 5574 } 5575 } 5576 5577 5578 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { 5579 #ifndef USDT2 5580 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); 5581 #else /* USDT2 */ 5582 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY( 5583 vm, penv, _args); 5584 #endif /* USDT2 */ 5585 if (!vm_created) { 5586 #ifndef USDT2 5587 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); 5588 #else /* USDT2 */ 5589 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5590 (uint32_t) JNI_ERR); 5591 #endif /* USDT2 */ 5592 return JNI_ERR; 5593 } 5594 5595 JNIWrapper("AttachCurrentThreadAsDaemon"); 5596 jint ret = attach_current_thread(vm, penv, _args, true); 5597 #ifndef USDT2 5598 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); 5599 #else /* USDT2 */ 5600 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5601 ret); 5602 #endif /* USDT2 */ 5603 return ret; 5604 } 5605 5606 5607 } // End extern "C" 5608 5609 const struct JNIInvokeInterface_ jni_InvokeInterface = { 5610 NULL, 5611 NULL, 5612 NULL, 5613 5614 jni_DestroyJavaVM, 5615 jni_AttachCurrentThread, 5616 jni_DetachCurrentThread, 5617 jni_GetEnv, 5618 jni_AttachCurrentThreadAsDaemon 5619 };