1 /* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/altHashing.hpp" 27 #include "classfile/classLoader.hpp" 28 #include "classfile/javaClasses.hpp" 29 #include "classfile/symbolTable.hpp" 30 #include "classfile/systemDictionary.hpp" 31 #include "classfile/vmSymbols.hpp" 32 #include "interpreter/linkResolver.hpp" 33 #ifndef SERIALGC 34 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 35 #endif // SERIALGC 36 #include "memory/allocation.hpp" 37 #include "memory/allocation.inline.hpp" 38 #include "memory/gcLocker.inline.hpp" 39 #include "memory/oopFactory.hpp" 40 #include "memory/universe.inline.hpp" 41 #include "oops/instanceKlass.hpp" 42 #include "oops/instanceOop.hpp" 43 #include "oops/markOop.hpp" 44 #include "oops/method.hpp" 45 #include "oops/objArrayKlass.hpp" 46 #include "oops/objArrayOop.hpp" 47 #include "oops/oop.inline.hpp" 48 #include "oops/symbol.hpp" 49 #include "oops/typeArrayKlass.hpp" 50 #include "oops/typeArrayOop.hpp" 51 #include "prims/jni.h" 52 #include "prims/jniCheck.hpp" 53 #include "prims/jniExport.hpp" 54 #include "prims/jniFastGetField.hpp" 55 #include "prims/jvm.h" 56 #include "prims/jvm_misc.hpp" 57 #include "prims/jvmtiExport.hpp" 58 #include "prims/jvmtiThreadState.hpp" 59 #include "runtime/compilationPolicy.hpp" 60 #include "runtime/fieldDescriptor.hpp" 61 #include "runtime/fprofiler.hpp" 62 #include "runtime/handles.inline.hpp" 63 #include "runtime/interfaceSupport.hpp" 64 #include "runtime/java.hpp" 65 #include "runtime/javaCalls.hpp" 66 #include "runtime/jfieldIDWorkaround.hpp" 67 #include "runtime/reflection.hpp" 68 #include "runtime/sharedRuntime.hpp" 69 #include "runtime/signature.hpp" 70 #include "runtime/vm_operations.hpp" 71 #include "services/runtimeService.hpp" 72 #include "trace/tracing.hpp" 73 #include "trace/traceEventTypes.hpp" 74 #include "utilities/defaultStream.hpp" 75 #include "utilities/dtrace.hpp" 76 #include "utilities/events.hpp" 77 #include "utilities/histogram.hpp" 78 #ifdef TARGET_OS_FAMILY_linux 79 # include "os_linux.inline.hpp" 80 # include "thread_linux.inline.hpp" 81 #endif 82 #ifdef TARGET_OS_FAMILY_solaris 83 # include "os_solaris.inline.hpp" 84 # include "thread_solaris.inline.hpp" 85 #endif 86 #ifdef TARGET_OS_FAMILY_windows 87 # include "os_windows.inline.hpp" 88 # include "thread_windows.inline.hpp" 89 #endif 90 #ifdef TARGET_OS_FAMILY_bsd 91 # include "os_bsd.inline.hpp" 92 # include "thread_bsd.inline.hpp" 93 #endif 94 95 static jint CurrentVersion = JNI_VERSION_1_6; 96 97 98 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace 99 // '-return' probe regardless of the return path is taken out of the function. 100 // Methods that have multiple return paths use this to avoid having to 101 // instrument each return path. Methods that use CHECK or THROW must use this 102 // since those macros can cause an immedate uninstrumented return. 103 // 104 // In order to get the return value, a reference to the variable containing 105 // the return value must be passed to the contructor of the object, and 106 // the return value must be set before return (since the mark object has 107 // a reference to it). 108 // 109 // Example: 110 // DT_RETURN_MARK_DECL(SomeFunc, int); 111 // JNI_ENTRY(int, SomeFunc, ...) 112 // int return_value = 0; 113 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); 114 // foo(CHECK_0) 115 // return_value = 5; 116 // return return_value; 117 // JNI_END 118 #ifndef USDT2 119 #define DT_RETURN_MARK_DECL(name, type) \ 120 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ 121 DTRACE_ONLY( \ 122 class DTraceReturnProbeMark_##name { \ 123 public: \ 124 const type& _ret_ref; \ 125 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 126 ~DTraceReturnProbeMark_##name() { \ 127 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ 128 } \ 129 } \ 130 ) 131 // Void functions are simpler since there's no return value 132 #define DT_VOID_RETURN_MARK_DECL(name) \ 133 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ 134 DTRACE_ONLY( \ 135 class DTraceReturnProbeMark_##name { \ 136 public: \ 137 ~DTraceReturnProbeMark_##name() { \ 138 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ 139 } \ 140 } \ 141 ) 142 143 #else /* USDT2 */ 144 145 #define DT_RETURN_MARK_DECL(name, type, probe) \ 146 DTRACE_ONLY( \ 147 class DTraceReturnProbeMark_##name { \ 148 public: \ 149 const type& _ret_ref; \ 150 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 151 ~DTraceReturnProbeMark_##name() { \ 152 probe; \ 153 } \ 154 } \ 155 ) 156 // Void functions are simpler since there's no return value 157 #define DT_VOID_RETURN_MARK_DECL(name, probe) \ 158 DTRACE_ONLY( \ 159 class DTraceReturnProbeMark_##name { \ 160 public: \ 161 ~DTraceReturnProbeMark_##name() { \ 162 probe; \ 163 } \ 164 } \ 165 ) 166 #endif /* USDT2 */ 167 168 // Place these macros in the function to mark the return. Non-void 169 // functions need the type and address of the return value. 170 #define DT_RETURN_MARK(name, type, ref) \ 171 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) 172 #define DT_VOID_RETURN_MARK(name) \ 173 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) 174 175 176 // Use these to select distinct code for floating-point vs. non-floating point 177 // situations. Used from within common macros where we need slightly 178 // different behavior for Float/Double 179 #define FP_SELECT_Boolean(intcode, fpcode) intcode 180 #define FP_SELECT_Byte(intcode, fpcode) intcode 181 #define FP_SELECT_Char(intcode, fpcode) intcode 182 #define FP_SELECT_Short(intcode, fpcode) intcode 183 #define FP_SELECT_Object(intcode, fpcode) intcode 184 #define FP_SELECT_Int(intcode, fpcode) intcode 185 #define FP_SELECT_Long(intcode, fpcode) intcode 186 #define FP_SELECT_Float(intcode, fpcode) fpcode 187 #define FP_SELECT_Double(intcode, fpcode) fpcode 188 #define FP_SELECT(TypeName, intcode, fpcode) \ 189 FP_SELECT_##TypeName(intcode, fpcode) 190 191 #define COMMA , 192 193 // Choose DT_RETURN_MARK macros based on the type: float/double -> void 194 // (dtrace doesn't do FP yet) 195 #ifndef USDT2 196 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ 197 FP_SELECT(TypeName, \ 198 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) 199 #else /* USDT2 */ 200 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \ 201 FP_SELECT(TypeName, \ 202 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) ) 203 #endif /* USDT2 */ 204 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ 205 FP_SELECT(TypeName, \ 206 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) 207 208 209 // out-of-line helpers for class jfieldIDWorkaround: 210 211 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) { 212 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { 213 uintptr_t as_uint = (uintptr_t) id; 214 intptr_t offset = raw_instance_offset(id); 215 if (is_checked_jfieldID(id)) { 216 if (!klass_hash_ok(k, id)) { 217 return false; 218 } 219 } 220 return InstanceKlass::cast(k)->contains_field_offset(offset); 221 } else { 222 JNIid* result = (JNIid*) id; 223 #ifdef ASSERT 224 return result != NULL && result->is_static_field_id(); 225 #else 226 return result != NULL; 227 #endif 228 } 229 } 230 231 232 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) { 233 if (offset <= small_offset_mask) { 234 Klass* field_klass = k; 235 Klass* super_klass = Klass::cast(field_klass)->super(); 236 // With compressed oops the most super class with nonstatic fields would 237 // be the owner of fields embedded in the header. 238 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() && 239 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) { 240 field_klass = super_klass; // super contains the field also 241 super_klass = Klass::cast(field_klass)->super(); 242 } 243 debug_only(No_Safepoint_Verifier nosafepoint;) 244 uintptr_t klass_hash = field_klass->identity_hash(); 245 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; 246 } else { 247 #if 0 248 #ifndef PRODUCT 249 { 250 ResourceMark rm; 251 warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name()); 252 } 253 #endif 254 #endif 255 return 0; 256 } 257 } 258 259 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) { 260 uintptr_t as_uint = (uintptr_t) id; 261 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; 262 do { 263 debug_only(No_Safepoint_Verifier nosafepoint;) 264 // Could use a non-blocking query for identity_hash here... 265 if ((k->identity_hash() & klass_mask) == klass_hash) 266 return true; 267 k = Klass::cast(k)->super(); 268 } while (k != NULL); 269 return false; 270 } 271 272 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) { 273 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); 274 uintptr_t as_uint = (uintptr_t) id; 275 intptr_t offset = raw_instance_offset(id); 276 if (VerifyJNIFields) { 277 if (is_checked_jfieldID(id)) { 278 guarantee(klass_hash_ok(k, id), 279 "Bug in native code: jfieldID class must match object"); 280 } else { 281 #if 0 282 #ifndef PRODUCT 283 if (Verbose) { 284 ResourceMark rm; 285 warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name()); 286 } 287 #endif 288 #endif 289 } 290 } 291 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset), 292 "Bug in native code: jfieldID offset must address interior of object"); 293 } 294 295 // Pick a reasonable higher bound for local capacity requested 296 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too 297 // high because a test (or very unusual application) may try to allocate 298 // that many handles and run out of swap space. An implementation is 299 // permitted to allocate more handles than the ensured capacity, so this 300 // value is set high enough to prevent compatibility problems. 301 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K; 302 303 304 // Wrapper to trace JNI functions 305 306 #ifdef ASSERT 307 Histogram* JNIHistogram; 308 static volatile jint JNIHistogram_lock = 0; 309 310 class JNITraceWrapper : public StackObj { 311 public: 312 JNITraceWrapper(const char* format, ...) { 313 if (TraceJNICalls) { 314 va_list ap; 315 va_start(ap, format); 316 tty->print("JNI "); 317 tty->vprint_cr(format, ap); 318 va_end(ap); 319 } 320 } 321 }; 322 323 class JNIHistogramElement : public HistogramElement { 324 public: 325 JNIHistogramElement(const char* name); 326 }; 327 328 JNIHistogramElement::JNIHistogramElement(const char* elementName) { 329 _name = elementName; 330 uintx count = 0; 331 332 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { 333 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { 334 count +=1; 335 if ( (WarnOnStalledSpinLock > 0) 336 && (count % WarnOnStalledSpinLock == 0)) { 337 warning("JNIHistogram_lock seems to be stalled"); 338 } 339 } 340 } 341 342 343 if(JNIHistogram == NULL) 344 JNIHistogram = new Histogram("JNI Call Counts",100); 345 346 JNIHistogram->add_element(this); 347 Atomic::dec(&JNIHistogram_lock); 348 } 349 350 #define JNICountWrapper(arg) \ 351 static JNIHistogramElement* e = new JNIHistogramElement(arg); \ 352 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ 353 if (e != NULL) e->increment_count() 354 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) 355 #else 356 #define JNIWrapper(arg) 357 #endif 358 359 360 // Implementation of JNI entries 361 362 #ifndef USDT2 363 DT_RETURN_MARK_DECL(DefineClass, jclass); 364 #else /* USDT2 */ 365 DT_RETURN_MARK_DECL(DefineClass, jclass 366 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref)); 367 #endif /* USDT2 */ 368 369 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, 370 const jbyte *buf, jsize bufLen)) 371 JNIWrapper("DefineClass"); 372 373 #ifndef USDT2 374 DTRACE_PROBE5(hotspot_jni, DefineClass__entry, 375 env, name, loaderRef, buf, bufLen); 376 #else /* USDT2 */ 377 HOTSPOT_JNI_DEFINECLASS_ENTRY( 378 env, (char*) name, loaderRef, (char*) buf, bufLen); 379 #endif /* USDT2 */ 380 jclass cls = NULL; 381 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); 382 383 TempNewSymbol class_name = NULL; 384 // Since exceptions can be thrown, class initialization can take place 385 // if name is NULL no check for class name in .class stream has to be made. 386 if (name != NULL) { 387 const int str_len = (int)strlen(name); 388 if (str_len > Symbol::max_length()) { 389 // It's impossible to create this class; the name cannot fit 390 // into the constant pool. 391 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 392 } 393 class_name = SymbolTable::new_symbol(name, CHECK_NULL); 394 } 395 ResourceMark rm(THREAD); 396 ClassFileStream st((u1*) buf, bufLen, NULL); 397 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); 398 399 if (UsePerfData && !class_loader.is_null()) { 400 // check whether the current caller thread holds the lock or not. 401 // If not, increment the corresponding counter 402 if (ObjectSynchronizer:: 403 query_lock_ownership((JavaThread*)THREAD, class_loader) != 404 ObjectSynchronizer::owner_self) { 405 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); 406 } 407 } 408 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, 409 Handle(), &st, true, 410 CHECK_NULL); 411 412 if (TraceClassResolution && k != NULL) { 413 trace_class_resolution(k); 414 } 415 416 cls = (jclass)JNIHandles::make_local( 417 env, Klass::cast(k)->java_mirror()); 418 return cls; 419 JNI_END 420 421 422 423 static bool first_time_FindClass = true; 424 425 #ifndef USDT2 426 DT_RETURN_MARK_DECL(FindClass, jclass); 427 #else /* USDT2 */ 428 DT_RETURN_MARK_DECL(FindClass, jclass 429 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref)); 430 #endif /* USDT2 */ 431 432 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) 433 JNIWrapper("FindClass"); 434 #ifndef USDT2 435 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); 436 #else /* USDT2 */ 437 HOTSPOT_JNI_FINDCLASS_ENTRY( 438 env, (char *)name); 439 #endif /* USDT2 */ 440 441 jclass result = NULL; 442 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); 443 444 // Remember if we are the first invocation of jni_FindClass 445 bool first_time = first_time_FindClass; 446 first_time_FindClass = false; 447 448 // Sanity check the name: it cannot be null or larger than the maximum size 449 // name we can fit in the constant pool. 450 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { 451 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 452 } 453 454 //%note jni_3 455 Handle loader; 456 Handle protection_domain; 457 // Find calling class 458 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); 459 if (k.not_null()) { 460 loader = Handle(THREAD, k->class_loader()); 461 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed 462 // in the correct class context. 463 if (loader.is_null() && 464 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { 465 JavaValue result(T_OBJECT); 466 JavaCalls::call_static(&result, k, 467 vmSymbols::getFromClass_name(), 468 vmSymbols::void_class_signature(), 469 thread); 470 if (HAS_PENDING_EXCEPTION) { 471 Handle ex(thread, thread->pending_exception()); 472 CLEAR_PENDING_EXCEPTION; 473 THROW_HANDLE_0(ex); 474 } 475 oop mirror = (oop) result.get_jobject(); 476 loader = Handle(THREAD, 477 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader()); 478 protection_domain = Handle(THREAD, 479 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain()); 480 } 481 } else { 482 // We call ClassLoader.getSystemClassLoader to obtain the system class loader. 483 loader = Handle(THREAD, SystemDictionary::java_system_loader()); 484 } 485 486 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 487 result = find_class_from_class_loader(env, sym, true, loader, 488 protection_domain, true, thread); 489 490 if (TraceClassResolution && result != NULL) { 491 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 492 } 493 494 // If we were the first invocation of jni_FindClass, we enable compilation again 495 // rather than just allowing invocation counter to overflow and decay. 496 // Controlled by flag DelayCompilationDuringStartup. 497 if (first_time && !CompileTheWorld) 498 CompilationPolicy::completed_vm_startup(); 499 500 return result; 501 JNI_END 502 503 #ifndef USDT2 504 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); 505 #else /* USDT2 */ 506 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID 507 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref)); 508 #endif /* USDT2 */ 509 510 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) 511 JNIWrapper("FromReflectedMethod"); 512 #ifndef USDT2 513 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); 514 #else /* USDT2 */ 515 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY( 516 env, method); 517 #endif /* USDT2 */ 518 jmethodID ret = NULL; 519 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); 520 521 // method is a handle to a java.lang.reflect.Method object 522 oop reflected = JNIHandles::resolve_non_null(method); 523 oop mirror = NULL; 524 int slot = 0; 525 526 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { 527 mirror = java_lang_reflect_Constructor::clazz(reflected); 528 slot = java_lang_reflect_Constructor::slot(reflected); 529 } else { 530 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type"); 531 mirror = java_lang_reflect_Method::clazz(reflected); 532 slot = java_lang_reflect_Method::slot(reflected); 533 } 534 Klass* k = java_lang_Class::as_Klass(mirror); 535 536 KlassHandle k1(THREAD, k); 537 // Make sure class is initialized before handing id's out to methods 538 Klass::cast(k1())->initialize(CHECK_NULL); 539 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot); 540 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted 541 return ret; 542 JNI_END 543 544 #ifndef USDT2 545 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); 546 #else /* USDT2 */ 547 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID 548 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref)); 549 #endif /* USDT2 */ 550 551 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) 552 JNIWrapper("FromReflectedField"); 553 #ifndef USDT2 554 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); 555 #else /* USDT2 */ 556 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY( 557 env, field); 558 #endif /* USDT2 */ 559 jfieldID ret = NULL; 560 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); 561 562 // field is a handle to a java.lang.reflect.Field object 563 oop reflected = JNIHandles::resolve_non_null(field); 564 oop mirror = java_lang_reflect_Field::clazz(reflected); 565 Klass* k = java_lang_Class::as_Klass(mirror); 566 int slot = java_lang_reflect_Field::slot(reflected); 567 int modifiers = java_lang_reflect_Field::modifiers(reflected); 568 569 KlassHandle k1(THREAD, k); 570 // Make sure class is initialized before handing id's out to fields 571 Klass::cast(k1())->initialize(CHECK_NULL); 572 573 // First check if this is a static field 574 if (modifiers & JVM_ACC_STATIC) { 575 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 576 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset); 577 assert(id != NULL, "corrupt Field object"); 578 debug_only(id->set_is_static_field_id();) 579 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 580 ret = jfieldIDWorkaround::to_static_jfieldID(id); 581 return ret; 582 } 583 584 // The slot is the index of the field description in the field-array 585 // The jfieldID is the offset of the field within the object 586 // It may also have hash bits for k, if VerifyJNIFields is turned on. 587 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 588 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); 589 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); 590 return ret; 591 JNI_END 592 593 #ifndef USDT2 594 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); 595 #else /* USDT2 */ 596 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject 597 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref)); 598 #endif /* USDT2 */ 599 600 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) 601 JNIWrapper("ToReflectedMethod"); 602 #ifndef USDT2 603 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); 604 #else /* USDT2 */ 605 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY( 606 env, cls, (uintptr_t) method_id, isStatic); 607 #endif /* USDT2 */ 608 jobject ret = NULL; 609 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); 610 611 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id)); 612 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); 613 oop reflection_method; 614 if (m->is_initializer()) { 615 reflection_method = Reflection::new_constructor(m, CHECK_NULL); 616 } else { 617 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); 618 } 619 ret = JNIHandles::make_local(env, reflection_method); 620 return ret; 621 JNI_END 622 623 #ifndef USDT2 624 DT_RETURN_MARK_DECL(GetSuperclass, jclass); 625 #else /* USDT2 */ 626 DT_RETURN_MARK_DECL(GetSuperclass, jclass 627 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref)); 628 #endif /* USDT2 */ 629 630 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) 631 JNIWrapper("GetSuperclass"); 632 #ifndef USDT2 633 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); 634 #else /* USDT2 */ 635 HOTSPOT_JNI_GETSUPERCLASS_ENTRY( 636 env, sub); 637 #endif /* USDT2 */ 638 jclass obj = NULL; 639 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); 640 641 oop mirror = JNIHandles::resolve_non_null(sub); 642 // primitive classes return NULL 643 if (java_lang_Class::is_primitive(mirror)) return NULL; 644 645 // Rules of Class.getSuperClass as implemented by KLass::java_super: 646 // arrays return Object 647 // interfaces return NULL 648 // proper classes return Klass::super() 649 Klass* k = java_lang_Class::as_Klass(mirror); 650 if (Klass::cast(k)->is_interface()) return NULL; 651 652 // return mirror for superclass 653 Klass* super = Klass::cast(k)->java_super(); 654 // super2 is the value computed by the compiler's getSuperClass intrinsic: 655 debug_only(Klass* super2 = ( Klass::cast(k)->oop_is_array() 656 ? SystemDictionary::Object_klass() 657 : Klass::cast(k)->super() ) ); 658 assert(super == super2, 659 "java_super computation depends on interface, array, other super"); 660 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror()); 661 return obj; 662 JNI_END 663 664 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) 665 JNIWrapper("IsSubclassOf"); 666 #ifndef USDT2 667 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); 668 #else /* USDT2 */ 669 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY( 670 env, sub, super); 671 #endif /* USDT2 */ 672 oop sub_mirror = JNIHandles::resolve_non_null(sub); 673 oop super_mirror = JNIHandles::resolve_non_null(super); 674 if (java_lang_Class::is_primitive(sub_mirror) || 675 java_lang_Class::is_primitive(super_mirror)) { 676 jboolean ret = (sub_mirror == super_mirror); 677 #ifndef USDT2 678 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 679 #else /* USDT2 */ 680 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 681 ret); 682 #endif /* USDT2 */ 683 return ret; 684 } 685 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror); 686 Klass* super_klass = java_lang_Class::as_Klass(super_mirror); 687 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom"); 688 jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ? 689 JNI_TRUE : JNI_FALSE; 690 #ifndef USDT2 691 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 692 #else /* USDT2 */ 693 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 694 ret); 695 #endif /* USDT2 */ 696 return ret; 697 JNI_END 698 699 #ifndef USDT2 700 DT_RETURN_MARK_DECL(Throw, jint); 701 #else /* USDT2 */ 702 DT_RETURN_MARK_DECL(Throw, jint 703 , HOTSPOT_JNI_THROW_RETURN(_ret_ref)); 704 #endif /* USDT2 */ 705 706 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) 707 JNIWrapper("Throw"); 708 #ifndef USDT2 709 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); 710 #else /* USDT2 */ 711 HOTSPOT_JNI_THROW_ENTRY( 712 env, obj); 713 #endif /* USDT2 */ 714 jint ret = JNI_OK; 715 DT_RETURN_MARK(Throw, jint, (const jint&)ret); 716 717 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); 718 ShouldNotReachHere(); 719 JNI_END 720 721 #ifndef USDT2 722 DT_RETURN_MARK_DECL(ThrowNew, jint); 723 #else /* USDT2 */ 724 DT_RETURN_MARK_DECL(ThrowNew, jint 725 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref)); 726 #endif /* USDT2 */ 727 728 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) 729 JNIWrapper("ThrowNew"); 730 #ifndef USDT2 731 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); 732 #else /* USDT2 */ 733 HOTSPOT_JNI_THROWNEW_ENTRY( 734 env, clazz, (char *) message); 735 #endif /* USDT2 */ 736 jint ret = JNI_OK; 737 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); 738 739 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 740 Symbol* name = k->name(); 741 Handle class_loader (THREAD, k->class_loader()); 742 Handle protection_domain (THREAD, k->protection_domain()); 743 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); 744 ShouldNotReachHere(); 745 JNI_END 746 747 748 // JNI functions only transform a pending async exception to a synchronous 749 // exception in ExceptionOccurred and ExceptionCheck calls, since 750 // delivering an async exception in other places won't change the native 751 // code's control flow and would be harmful when native code further calls 752 // JNI functions with a pending exception. Async exception is also checked 753 // during the call, so ExceptionOccurred/ExceptionCheck won't return 754 // false but deliver the async exception at the very end during 755 // state transition. 756 757 static void jni_check_async_exceptions(JavaThread *thread) { 758 assert(thread == Thread::current(), "must be itself"); 759 thread->check_and_handle_async_exceptions(); 760 } 761 762 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) 763 JNIWrapper("ExceptionOccurred"); 764 #ifndef USDT2 765 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); 766 #else /* USDT2 */ 767 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY( 768 env); 769 #endif /* USDT2 */ 770 jni_check_async_exceptions(thread); 771 oop exception = thread->pending_exception(); 772 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); 773 #ifndef USDT2 774 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); 775 #else /* USDT2 */ 776 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN( 777 ret); 778 #endif /* USDT2 */ 779 return ret; 780 JNI_END 781 782 783 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) 784 JNIWrapper("ExceptionDescribe"); 785 #ifndef USDT2 786 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); 787 #else /* USDT2 */ 788 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY( 789 env); 790 #endif /* USDT2 */ 791 if (thread->has_pending_exception()) { 792 Handle ex(thread, thread->pending_exception()); 793 thread->clear_pending_exception(); 794 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) { 795 // Don't print anything if we are being killed. 796 } else { 797 jio_fprintf(defaultStream::error_stream(), "Exception "); 798 if (thread != NULL && thread->threadObj() != NULL) { 799 ResourceMark rm(THREAD); 800 jio_fprintf(defaultStream::error_stream(), 801 "in thread \"%s\" ", thread->get_thread_name()); 802 } 803 if (ex->is_a(SystemDictionary::Throwable_klass())) { 804 JavaValue result(T_VOID); 805 JavaCalls::call_virtual(&result, 806 ex, 807 KlassHandle(THREAD, 808 SystemDictionary::Throwable_klass()), 809 vmSymbols::printStackTrace_name(), 810 vmSymbols::void_method_signature(), 811 THREAD); 812 // If an exception is thrown in the call it gets thrown away. Not much 813 // we can do with it. The native code that calls this, does not check 814 // for the exception - hence, it might still be in the thread when DestroyVM gets 815 // called, potentially causing a few asserts to trigger - since no pending exception 816 // is expected. 817 CLEAR_PENDING_EXCEPTION; 818 } else { 819 ResourceMark rm(THREAD); 820 jio_fprintf(defaultStream::error_stream(), 821 ". Uncaught exception of type %s.", 822 Klass::cast(ex->klass())->external_name()); 823 } 824 } 825 } 826 #ifndef USDT2 827 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); 828 #else /* USDT2 */ 829 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN( 830 ); 831 #endif /* USDT2 */ 832 JNI_END 833 834 835 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) 836 JNIWrapper("ExceptionClear"); 837 #ifndef USDT2 838 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); 839 #else /* USDT2 */ 840 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY( 841 env); 842 #endif /* USDT2 */ 843 844 // The jni code might be using this API to clear java thrown exception. 845 // So just mark jvmti thread exception state as exception caught. 846 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); 847 if (state != NULL && state->is_exception_detected()) { 848 state->set_exception_caught(); 849 } 850 thread->clear_pending_exception(); 851 #ifndef USDT2 852 DTRACE_PROBE(hotspot_jni, ExceptionClear__return); 853 #else /* USDT2 */ 854 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN( 855 ); 856 #endif /* USDT2 */ 857 JNI_END 858 859 860 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) 861 JNIWrapper("FatalError"); 862 #ifndef USDT2 863 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); 864 #else /* USDT2 */ 865 HOTSPOT_JNI_FATALERROR_ENTRY( 866 env, (char *) msg); 867 #endif /* USDT2 */ 868 tty->print_cr("FATAL ERROR in native method: %s", msg); 869 thread->print_stack(); 870 os::abort(); // Dump core and abort 871 JNI_END 872 873 874 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) 875 JNIWrapper("PushLocalFrame"); 876 #ifndef USDT2 877 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); 878 #else /* USDT2 */ 879 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY( 880 env, capacity); 881 #endif /* USDT2 */ 882 //%note jni_11 883 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) { 884 #ifndef USDT2 885 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); 886 #else /* USDT2 */ 887 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 888 (uint32_t)JNI_ERR); 889 #endif /* USDT2 */ 890 return JNI_ERR; 891 } 892 JNIHandleBlock* old_handles = thread->active_handles(); 893 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 894 assert(new_handles != NULL, "should not be NULL"); 895 new_handles->set_pop_frame_link(old_handles); 896 thread->set_active_handles(new_handles); 897 jint ret = JNI_OK; 898 #ifndef USDT2 899 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); 900 #else /* USDT2 */ 901 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 902 ret); 903 #endif /* USDT2 */ 904 return ret; 905 JNI_END 906 907 908 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) 909 JNIWrapper("PopLocalFrame"); 910 #ifndef USDT2 911 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); 912 #else /* USDT2 */ 913 HOTSPOT_JNI_POPLOCALFRAME_ENTRY( 914 env, result); 915 #endif /* USDT2 */ 916 //%note jni_11 917 Handle result_handle(thread, JNIHandles::resolve(result)); 918 JNIHandleBlock* old_handles = thread->active_handles(); 919 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); 920 if (new_handles != NULL) { 921 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. 922 // This way code will still work if PopLocalFrame is called without a corresponding 923 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise 924 // the release_block call will release the blocks. 925 thread->set_active_handles(new_handles); 926 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below 927 JNIHandleBlock::release_block(old_handles, thread); // may block 928 result = JNIHandles::make_local(thread, result_handle()); 929 } 930 #ifndef USDT2 931 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); 932 #else /* USDT2 */ 933 HOTSPOT_JNI_POPLOCALFRAME_RETURN( 934 result); 935 #endif /* USDT2 */ 936 return result; 937 JNI_END 938 939 940 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) 941 JNIWrapper("NewGlobalRef"); 942 #ifndef USDT2 943 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); 944 #else /* USDT2 */ 945 HOTSPOT_JNI_NEWGLOBALREF_ENTRY( 946 env, ref); 947 #endif /* USDT2 */ 948 Handle ref_handle(thread, JNIHandles::resolve(ref)); 949 jobject ret = JNIHandles::make_global(ref_handle); 950 #ifndef USDT2 951 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); 952 #else /* USDT2 */ 953 HOTSPOT_JNI_NEWGLOBALREF_RETURN( 954 ret); 955 #endif /* USDT2 */ 956 return ret; 957 JNI_END 958 959 // Must be JNI_ENTRY (with HandleMark) 960 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) 961 JNIWrapper("DeleteGlobalRef"); 962 #ifndef USDT2 963 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); 964 #else /* USDT2 */ 965 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY( 966 env, ref); 967 #endif /* USDT2 */ 968 JNIHandles::destroy_global(ref); 969 #ifndef USDT2 970 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); 971 #else /* USDT2 */ 972 HOTSPOT_JNI_DELETEGLOBALREF_RETURN( 973 ); 974 #endif /* USDT2 */ 975 JNI_END 976 977 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) 978 JNIWrapper("DeleteLocalRef"); 979 #ifndef USDT2 980 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); 981 #else /* USDT2 */ 982 HOTSPOT_JNI_DELETELOCALREF_ENTRY( 983 env, obj); 984 #endif /* USDT2 */ 985 JNIHandles::destroy_local(obj); 986 #ifndef USDT2 987 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); 988 #else /* USDT2 */ 989 HOTSPOT_JNI_DELETELOCALREF_RETURN( 990 ); 991 #endif /* USDT2 */ 992 JNI_END 993 994 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) 995 JNIWrapper("IsSameObject"); 996 #ifndef USDT2 997 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); 998 #else /* USDT2 */ 999 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY( 1000 env, r1, r2); 1001 #endif /* USDT2 */ 1002 oop a = JNIHandles::resolve(r1); 1003 oop b = JNIHandles::resolve(r2); 1004 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; 1005 #ifndef USDT2 1006 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); 1007 #else /* USDT2 */ 1008 HOTSPOT_JNI_ISSAMEOBJECT_RETURN( 1009 ret); 1010 #endif /* USDT2 */ 1011 return ret; 1012 JNI_END 1013 1014 1015 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) 1016 JNIWrapper("NewLocalRef"); 1017 #ifndef USDT2 1018 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); 1019 #else /* USDT2 */ 1020 HOTSPOT_JNI_NEWLOCALREF_ENTRY( 1021 env, ref); 1022 #endif /* USDT2 */ 1023 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); 1024 #ifndef USDT2 1025 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); 1026 #else /* USDT2 */ 1027 HOTSPOT_JNI_NEWLOCALREF_RETURN( 1028 ret); 1029 #endif /* USDT2 */ 1030 return ret; 1031 JNI_END 1032 1033 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) 1034 JNIWrapper("EnsureLocalCapacity"); 1035 #ifndef USDT2 1036 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); 1037 #else /* USDT2 */ 1038 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY( 1039 env, capacity); 1040 #endif /* USDT2 */ 1041 jint ret; 1042 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) { 1043 ret = JNI_OK; 1044 } else { 1045 ret = JNI_ERR; 1046 } 1047 #ifndef USDT2 1048 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); 1049 #else /* USDT2 */ 1050 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN( 1051 ret); 1052 #endif /* USDT2 */ 1053 return ret; 1054 JNI_END 1055 1056 // Return the Handle Type 1057 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) 1058 JNIWrapper("GetObjectRefType"); 1059 #ifndef USDT2 1060 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); 1061 #else /* USDT2 */ 1062 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY( 1063 env, obj); 1064 #endif /* USDT2 */ 1065 jobjectRefType ret; 1066 if (JNIHandles::is_local_handle(thread, obj) || 1067 JNIHandles::is_frame_handle(thread, obj)) 1068 ret = JNILocalRefType; 1069 else if (JNIHandles::is_global_handle(obj)) 1070 ret = JNIGlobalRefType; 1071 else if (JNIHandles::is_weak_global_handle(obj)) 1072 ret = JNIWeakGlobalRefType; 1073 else 1074 ret = JNIInvalidRefType; 1075 #ifndef USDT2 1076 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); 1077 #else /* USDT2 */ 1078 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN( 1079 (void *) ret); 1080 #endif /* USDT2 */ 1081 return ret; 1082 JNI_END 1083 1084 1085 class JNI_ArgumentPusher : public SignatureIterator { 1086 protected: 1087 JavaCallArguments* _arguments; 1088 1089 virtual void get_bool () = 0; 1090 virtual void get_char () = 0; 1091 virtual void get_short () = 0; 1092 virtual void get_byte () = 0; 1093 virtual void get_int () = 0; 1094 virtual void get_long () = 0; 1095 virtual void get_float () = 0; 1096 virtual void get_double () = 0; 1097 virtual void get_object () = 0; 1098 1099 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) { 1100 this->_return_type = T_ILLEGAL; 1101 _arguments = NULL; 1102 } 1103 1104 public: 1105 virtual void iterate( uint64_t fingerprint ) = 0; 1106 1107 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } 1108 1109 inline void do_bool() { if (!is_return_type()) get_bool(); } 1110 inline void do_char() { if (!is_return_type()) get_char(); } 1111 inline void do_short() { if (!is_return_type()) get_short(); } 1112 inline void do_byte() { if (!is_return_type()) get_byte(); } 1113 inline void do_int() { if (!is_return_type()) get_int(); } 1114 inline void do_long() { if (!is_return_type()) get_long(); } 1115 inline void do_float() { if (!is_return_type()) get_float(); } 1116 inline void do_double() { if (!is_return_type()) get_double(); } 1117 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } 1118 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array 1119 inline void do_void() { } 1120 1121 JavaCallArguments* arguments() { return _arguments; } 1122 void push_receiver(Handle h) { _arguments->push_oop(h); } 1123 }; 1124 1125 1126 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { 1127 protected: 1128 va_list _ap; 1129 1130 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg 1131 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg 1132 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg 1133 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg 1134 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } 1135 1136 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests 1137 1138 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } 1139 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg 1140 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } 1141 inline void get_object() { jobject l = va_arg(_ap, jobject); 1142 _arguments->push_oop(Handle((oop *)l, false)); } 1143 1144 inline void set_ap(va_list rap) { 1145 #ifdef va_copy 1146 va_copy(_ap, rap); 1147 #elif defined (__va_copy) 1148 __va_copy(_ap, rap); 1149 #else 1150 _ap = rap; 1151 #endif 1152 } 1153 1154 public: 1155 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap) 1156 : JNI_ArgumentPusher(signature) { 1157 set_ap(rap); 1158 } 1159 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap) 1160 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1161 set_ap(rap); 1162 } 1163 1164 // Optimized path if we have the bitvector form of signature 1165 void iterate( uint64_t fingerprint ) { 1166 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments 1167 else { 1168 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1169 result_feature_mask); 1170 1171 assert(fingerprint, "Fingerprint should not be 0"); 1172 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1173 while ( 1 ) { 1174 switch ( fingerprint & parameter_feature_mask ) { 1175 case bool_parm: 1176 case char_parm: 1177 case short_parm: 1178 case byte_parm: 1179 case int_parm: 1180 get_int(); 1181 break; 1182 case obj_parm: 1183 get_object(); 1184 break; 1185 case long_parm: 1186 get_long(); 1187 break; 1188 case float_parm: 1189 get_float(); 1190 break; 1191 case double_parm: 1192 get_double(); 1193 break; 1194 case done_parm: 1195 return; 1196 break; 1197 default: 1198 ShouldNotReachHere(); 1199 break; 1200 } 1201 fingerprint >>= parameter_feature_size; 1202 } 1203 } 1204 } 1205 }; 1206 1207 1208 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { 1209 protected: 1210 const jvalue *_ap; 1211 1212 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); } 1213 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } 1214 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } 1215 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } 1216 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } 1217 1218 inline void get_long() { _arguments->push_long((_ap++)->j); } 1219 inline void get_float() { _arguments->push_float((_ap++)->f); } 1220 inline void get_double() { _arguments->push_double((_ap++)->d);} 1221 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } 1222 1223 inline void set_ap(const jvalue *rap) { _ap = rap; } 1224 1225 public: 1226 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap) 1227 : JNI_ArgumentPusher(signature) { 1228 set_ap(rap); 1229 } 1230 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap) 1231 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1232 set_ap(rap); 1233 } 1234 1235 // Optimized path if we have the bitvector form of signature 1236 void iterate( uint64_t fingerprint ) { 1237 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments 1238 else { 1239 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1240 result_feature_mask); 1241 assert(fingerprint, "Fingerprint should not be 0"); 1242 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1243 while ( 1 ) { 1244 switch ( fingerprint & parameter_feature_mask ) { 1245 case bool_parm: 1246 get_bool(); 1247 break; 1248 case char_parm: 1249 get_char(); 1250 break; 1251 case short_parm: 1252 get_short(); 1253 break; 1254 case byte_parm: 1255 get_byte(); 1256 break; 1257 case int_parm: 1258 get_int(); 1259 break; 1260 case obj_parm: 1261 get_object(); 1262 break; 1263 case long_parm: 1264 get_long(); 1265 break; 1266 case float_parm: 1267 get_float(); 1268 break; 1269 case double_parm: 1270 get_double(); 1271 break; 1272 case done_parm: 1273 return; 1274 break; 1275 default: 1276 ShouldNotReachHere(); 1277 break; 1278 } 1279 fingerprint >>= parameter_feature_size; 1280 } 1281 } 1282 } 1283 }; 1284 1285 1286 enum JNICallType { 1287 JNI_STATIC, 1288 JNI_VIRTUAL, 1289 JNI_NONVIRTUAL 1290 }; 1291 1292 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) { 1293 assert(!method.is_null() , "method should not be null"); 1294 1295 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc) 1296 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass()); 1297 KlassHandle spec_klass (THREAD, method->method_holder()); 1298 Symbol* name = method->name(); 1299 Symbol* signature = method->signature(); 1300 CallInfo info; 1301 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle())); 1302 return info.selected_method(); 1303 } 1304 1305 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) { 1306 assert(!method.is_null() , "method should not be null"); 1307 1308 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc) 1309 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass()); 1310 KlassHandle spec_klass (THREAD, method->method_holder()); 1311 Symbol* name = method->name(); 1312 Symbol* signature = method->signature(); 1313 CallInfo info; 1314 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle())); 1315 return info.selected_method(); 1316 } 1317 1318 1319 1320 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1321 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id)); 1322 1323 // Create object to hold arguments for the JavaCall, and associate it with 1324 // the jni parser 1325 ResourceMark rm(THREAD); 1326 int number_of_parameters = method->size_of_parameters(); 1327 JavaCallArguments java_args(number_of_parameters); 1328 args->set_java_argument_object(&java_args); 1329 1330 assert(method->is_static(), "method should be static"); 1331 1332 // Fill out JavaCallArguments object 1333 args->iterate( Fingerprinter(method).fingerprint() ); 1334 // Initialize result type 1335 result->set_type(args->get_ret_type()); 1336 1337 // Invoke the method. Result is returned as oop. 1338 JavaCalls::call(result, method, &java_args, CHECK); 1339 1340 // Convert result 1341 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1342 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1343 } 1344 } 1345 1346 1347 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1348 oop recv = JNIHandles::resolve(receiver); 1349 if (recv == NULL) { 1350 THROW(vmSymbols::java_lang_NullPointerException()); 1351 } 1352 Handle h_recv(THREAD, recv); 1353 1354 int number_of_parameters; 1355 Method* selected_method; 1356 { 1357 Method* m = Method::resolve_jmethod_id(method_id); 1358 number_of_parameters = m->size_of_parameters(); 1359 Klass* holder = m->method_holder(); 1360 if (!(Klass::cast(holder))->is_interface()) { 1361 // non-interface call -- for that little speed boost, don't handlize 1362 debug_only(No_Safepoint_Verifier nosafepoint;) 1363 if (call_type == JNI_VIRTUAL) { 1364 // jni_GetMethodID makes sure class is linked and initialized 1365 // so m should have a valid vtable index. 1366 int vtbl_index = m->vtable_index(); 1367 if (vtbl_index != Method::nonvirtual_vtable_index) { 1368 Klass* k = h_recv->klass(); 1369 // k might be an arrayKlassOop but all vtables start at 1370 // the same place. The cast is to avoid virtual call and assertion. 1371 InstanceKlass *ik = (InstanceKlass*)k; 1372 selected_method = ik->method_at_vtable(vtbl_index); 1373 } else { 1374 // final method 1375 selected_method = m; 1376 } 1377 } else { 1378 // JNI_NONVIRTUAL call 1379 selected_method = m; 1380 } 1381 } else { 1382 // interface call 1383 KlassHandle h_holder(THREAD, holder); 1384 1385 int itbl_index = m->cached_itable_index(); 1386 if (itbl_index == -1) { 1387 itbl_index = klassItable::compute_itable_index(m); 1388 m->set_cached_itable_index(itbl_index); 1389 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again 1390 } 1391 Klass* k = h_recv->klass(); 1392 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); 1393 } 1394 } 1395 1396 methodHandle method(THREAD, selected_method); 1397 1398 // Create object to hold arguments for the JavaCall, and associate it with 1399 // the jni parser 1400 ResourceMark rm(THREAD); 1401 JavaCallArguments java_args(number_of_parameters); 1402 args->set_java_argument_object(&java_args); 1403 1404 // handle arguments 1405 assert(!method->is_static(), "method should not be static"); 1406 args->push_receiver(h_recv); // Push jobject handle 1407 1408 // Fill out JavaCallArguments object 1409 args->iterate( Fingerprinter(method).fingerprint() ); 1410 // Initialize result type 1411 result->set_type(args->get_ret_type()); 1412 1413 // Invoke the method. Result is returned as oop. 1414 JavaCalls::call(result, method, &java_args, CHECK); 1415 1416 // Convert result 1417 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1418 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1419 } 1420 } 1421 1422 1423 static instanceOop alloc_object(jclass clazz, TRAPS) { 1424 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1425 Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL); 1426 InstanceKlass::cast(k())->initialize(CHECK_NULL); 1427 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD); 1428 return ih; 1429 } 1430 1431 #ifndef USDT2 1432 DT_RETURN_MARK_DECL(AllocObject, jobject); 1433 #else /* USDT2 */ 1434 DT_RETURN_MARK_DECL(AllocObject, jobject 1435 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref)); 1436 #endif /* USDT2 */ 1437 1438 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) 1439 JNIWrapper("AllocObject"); 1440 1441 #ifndef USDT2 1442 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); 1443 #else /* USDT2 */ 1444 HOTSPOT_JNI_ALLOCOBJECT_ENTRY( 1445 env, clazz); 1446 #endif /* USDT2 */ 1447 jobject ret = NULL; 1448 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); 1449 1450 instanceOop i = alloc_object(clazz, CHECK_NULL); 1451 ret = JNIHandles::make_local(env, i); 1452 return ret; 1453 JNI_END 1454 1455 #ifndef USDT2 1456 DT_RETURN_MARK_DECL(NewObjectA, jobject); 1457 #else /* USDT2 */ 1458 DT_RETURN_MARK_DECL(NewObjectA, jobject 1459 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref)); 1460 #endif /* USDT2 */ 1461 1462 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) 1463 JNIWrapper("NewObjectA"); 1464 #ifndef USDT2 1465 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); 1466 #else /* USDT2 */ 1467 HOTSPOT_JNI_NEWOBJECTA_ENTRY( 1468 env, clazz, (uintptr_t) methodID); 1469 #endif /* USDT2 */ 1470 jobject obj = NULL; 1471 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); 1472 1473 instanceOop i = alloc_object(clazz, CHECK_NULL); 1474 obj = JNIHandles::make_local(env, i); 1475 JavaValue jvalue(T_VOID); 1476 JNI_ArgumentPusherArray ap(methodID, args); 1477 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1478 return obj; 1479 JNI_END 1480 1481 #ifndef USDT2 1482 DT_RETURN_MARK_DECL(NewObjectV, jobject); 1483 #else /* USDT2 */ 1484 DT_RETURN_MARK_DECL(NewObjectV, jobject 1485 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref)); 1486 #endif /* USDT2 */ 1487 1488 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) 1489 JNIWrapper("NewObjectV"); 1490 #ifndef USDT2 1491 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); 1492 #else /* USDT2 */ 1493 HOTSPOT_JNI_NEWOBJECTV_ENTRY( 1494 env, clazz, (uintptr_t) methodID); 1495 #endif /* USDT2 */ 1496 jobject obj = NULL; 1497 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); 1498 1499 instanceOop i = alloc_object(clazz, CHECK_NULL); 1500 obj = JNIHandles::make_local(env, i); 1501 JavaValue jvalue(T_VOID); 1502 JNI_ArgumentPusherVaArg ap(methodID, args); 1503 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1504 return obj; 1505 JNI_END 1506 1507 #ifndef USDT2 1508 DT_RETURN_MARK_DECL(NewObject, jobject); 1509 #else /* USDT2 */ 1510 DT_RETURN_MARK_DECL(NewObject, jobject 1511 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref)); 1512 #endif /* USDT2 */ 1513 1514 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) 1515 JNIWrapper("NewObject"); 1516 #ifndef USDT2 1517 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); 1518 #else /* USDT2 */ 1519 HOTSPOT_JNI_NEWOBJECT_ENTRY( 1520 env, clazz, (uintptr_t) methodID); 1521 #endif /* USDT2 */ 1522 jobject obj = NULL; 1523 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); 1524 1525 instanceOop i = alloc_object(clazz, CHECK_NULL); 1526 obj = JNIHandles::make_local(env, i); 1527 va_list args; 1528 va_start(args, methodID); 1529 JavaValue jvalue(T_VOID); 1530 JNI_ArgumentPusherVaArg ap(methodID, args); 1531 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1532 va_end(args); 1533 return obj; 1534 JNI_END 1535 1536 1537 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) 1538 JNIWrapper("GetObjectClass"); 1539 #ifndef USDT2 1540 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); 1541 #else /* USDT2 */ 1542 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY( 1543 env, obj); 1544 #endif /* USDT2 */ 1545 Klass* k = JNIHandles::resolve_non_null(obj)->klass(); 1546 jclass ret = 1547 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); 1548 #ifndef USDT2 1549 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); 1550 #else /* USDT2 */ 1551 HOTSPOT_JNI_GETOBJECTCLASS_RETURN( 1552 ret); 1553 #endif /* USDT2 */ 1554 return ret; 1555 JNI_END 1556 1557 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) 1558 JNIWrapper("IsInstanceOf"); 1559 #ifndef USDT2 1560 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); 1561 #else /* USDT2 */ 1562 HOTSPOT_JNI_ISINSTANCEOF_ENTRY( 1563 env, obj, clazz); 1564 #endif /* USDT2 */ 1565 jboolean ret = JNI_TRUE; 1566 if (obj != NULL) { 1567 ret = JNI_FALSE; 1568 Klass* k = java_lang_Class::as_Klass( 1569 JNIHandles::resolve_non_null(clazz)); 1570 if (k != NULL) { 1571 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; 1572 } 1573 } 1574 #ifndef USDT2 1575 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); 1576 #else /* USDT2 */ 1577 HOTSPOT_JNI_ISINSTANCEOF_RETURN( 1578 ret); 1579 #endif /* USDT2 */ 1580 return ret; 1581 JNI_END 1582 1583 1584 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, 1585 const char *sig, bool is_static, TRAPS) { 1586 // %%%% This code should probably just call into a method in the LinkResolver 1587 // 1588 // The class should have been loaded (we have an instance of the class 1589 // passed in) so the method and signature should already be in the symbol 1590 // table. If they're not there, the method doesn't exist. 1591 const char *name_to_probe = (name_str == NULL) 1592 ? vmSymbols::object_initializer_name()->as_C_string() 1593 : name_str; 1594 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe)); 1595 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig)); 1596 1597 if (name == NULL || signature == NULL) { 1598 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1599 } 1600 1601 // Throw a NoSuchMethodError exception if we have an instance of a 1602 // primitive java.lang.Class 1603 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { 1604 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1605 } 1606 1607 KlassHandle klass(THREAD, 1608 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1609 1610 // Make sure class is linked and initialized before handing id's out to 1611 // Method*s. 1612 Klass::cast(klass())->initialize(CHECK_NULL); 1613 1614 Method* m; 1615 if (name == vmSymbols::object_initializer_name() || 1616 name == vmSymbols::class_initializer_name()) { 1617 // Never search superclasses for constructors 1618 if (klass->oop_is_instance()) { 1619 m = InstanceKlass::cast(klass())->find_method(name, signature); 1620 } else { 1621 m = NULL; 1622 } 1623 } else { 1624 m = klass->lookup_method(name, signature); 1625 // Look up interfaces 1626 if (m == NULL && klass->oop_is_instance()) { 1627 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name, 1628 signature); 1629 } 1630 } 1631 if (m == NULL || (m->is_static() != is_static)) { 1632 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1633 } 1634 return m->jmethod_id(); 1635 } 1636 1637 1638 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, 1639 const char *name, const char *sig)) 1640 JNIWrapper("GetMethodID"); 1641 #ifndef USDT2 1642 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); 1643 #else /* USDT2 */ 1644 HOTSPOT_JNI_GETMETHODID_ENTRY( 1645 env, clazz, (char *) name, (char *) sig); 1646 #endif /* USDT2 */ 1647 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); 1648 #ifndef USDT2 1649 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); 1650 #else /* USDT2 */ 1651 HOTSPOT_JNI_GETMETHODID_RETURN( 1652 (uintptr_t) ret); 1653 #endif /* USDT2 */ 1654 return ret; 1655 JNI_END 1656 1657 1658 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, 1659 const char *name, const char *sig)) 1660 JNIWrapper("GetStaticMethodID"); 1661 #ifndef USDT2 1662 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); 1663 #else /* USDT2 */ 1664 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY( 1665 env, (char *) clazz, (char *) name, (char *)sig); 1666 #endif /* USDT2 */ 1667 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); 1668 #ifndef USDT2 1669 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); 1670 #else /* USDT2 */ 1671 HOTSPOT_JNI_GETSTATICMETHODID_RETURN( 1672 (uintptr_t) ret); 1673 #endif /* USDT2 */ 1674 return ret; 1675 JNI_END 1676 1677 1678 1679 // 1680 // Calling Methods 1681 // 1682 1683 #ifndef USDT2 1684 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ 1685 \ 1686 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ 1687 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ 1688 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ 1689 \ 1690 JNI_ENTRY(ResultType, \ 1691 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1692 JNIWrapper("Call" XSTR(Result) "Method"); \ 1693 \ 1694 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \ 1695 ResultType ret = 0;\ 1696 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1697 (const ResultType&)ret);\ 1698 \ 1699 va_list args; \ 1700 va_start(args, methodID); \ 1701 JavaValue jvalue(Tag); \ 1702 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1703 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1704 va_end(args); \ 1705 ret = jvalue.get_##ResultType(); \ 1706 return ret;\ 1707 JNI_END \ 1708 \ 1709 \ 1710 JNI_ENTRY(ResultType, \ 1711 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1712 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1713 \ 1714 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \ 1715 ResultType ret = 0;\ 1716 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1717 (const ResultType&)ret);\ 1718 \ 1719 JavaValue jvalue(Tag); \ 1720 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1721 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1722 ret = jvalue.get_##ResultType(); \ 1723 return ret;\ 1724 JNI_END \ 1725 \ 1726 \ 1727 JNI_ENTRY(ResultType, \ 1728 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1729 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1730 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \ 1731 ResultType ret = 0;\ 1732 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1733 (const ResultType&)ret);\ 1734 \ 1735 JavaValue jvalue(Tag); \ 1736 JNI_ArgumentPusherArray ap(methodID, args); \ 1737 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1738 ret = jvalue.get_##ResultType(); \ 1739 return ret;\ 1740 JNI_END 1741 1742 // the runtime type of subword integral basic types is integer 1743 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) 1744 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) 1745 DEFINE_CALLMETHOD(jchar, Char, T_CHAR) 1746 DEFINE_CALLMETHOD(jshort, Short, T_SHORT) 1747 1748 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) 1749 DEFINE_CALLMETHOD(jint, Int, T_INT) 1750 DEFINE_CALLMETHOD(jlong, Long, T_LONG) 1751 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) 1752 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) 1753 1754 DT_VOID_RETURN_MARK_DECL(CallVoidMethod); 1755 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); 1756 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); 1757 1758 #else /* USDT2 */ 1759 1760 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \ 1761 , EntryProbe, ReturnProbe) \ 1762 \ 1763 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \ 1764 , ReturnProbe); \ 1765 \ 1766 JNI_ENTRY(ResultType, \ 1767 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1768 JNIWrapper("Call" XSTR(Result) "Method"); \ 1769 \ 1770 EntryProbe; \ 1771 ResultType ret = 0;\ 1772 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1773 (const ResultType&)ret);\ 1774 \ 1775 va_list args; \ 1776 va_start(args, methodID); \ 1777 JavaValue jvalue(Tag); \ 1778 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1779 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1780 va_end(args); \ 1781 ret = jvalue.get_##ResultType(); \ 1782 return ret;\ 1783 JNI_END 1784 1785 // the runtime type of subword integral basic types is integer 1786 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN 1787 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1788 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1789 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE 1790 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1791 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1792 DEFINE_CALLMETHOD(jchar, Char, T_CHAR 1793 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1794 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1795 DEFINE_CALLMETHOD(jshort, Short, T_SHORT 1796 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1797 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1798 1799 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT 1800 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1801 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1802 DEFINE_CALLMETHOD(jint, Int, T_INT, 1803 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1804 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1805 DEFINE_CALLMETHOD(jlong, Long, T_LONG 1806 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1807 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1808 // Float and double probes don't return value because dtrace doesn't currently support it 1809 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT 1810 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1811 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1812 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE 1813 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1814 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1815 1816 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \ 1817 , EntryProbe, ReturnProbe) \ 1818 \ 1819 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \ 1820 , ReturnProbe); \ 1821 \ 1822 JNI_ENTRY(ResultType, \ 1823 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1824 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1825 \ 1826 EntryProbe;\ 1827 ResultType ret = 0;\ 1828 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1829 (const ResultType&)ret);\ 1830 \ 1831 JavaValue jvalue(Tag); \ 1832 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1833 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1834 ret = jvalue.get_##ResultType(); \ 1835 return ret;\ 1836 JNI_END 1837 1838 // the runtime type of subword integral basic types is integer 1839 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN 1840 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1841 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1842 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE 1843 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1844 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1845 DEFINE_CALLMETHODV(jchar, Char, T_CHAR 1846 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1847 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1848 DEFINE_CALLMETHODV(jshort, Short, T_SHORT 1849 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1850 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1851 1852 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT 1853 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1854 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1855 DEFINE_CALLMETHODV(jint, Int, T_INT, 1856 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1857 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1858 DEFINE_CALLMETHODV(jlong, Long, T_LONG 1859 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1860 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1861 // Float and double probes don't return value because dtrace doesn't currently support it 1862 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT 1863 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1864 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1865 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE 1866 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1867 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1868 1869 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \ 1870 , EntryProbe, ReturnProbe) \ 1871 \ 1872 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \ 1873 , ReturnProbe); \ 1874 \ 1875 JNI_ENTRY(ResultType, \ 1876 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1877 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1878 EntryProbe; \ 1879 ResultType ret = 0;\ 1880 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1881 (const ResultType&)ret);\ 1882 \ 1883 JavaValue jvalue(Tag); \ 1884 JNI_ArgumentPusherArray ap(methodID, args); \ 1885 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1886 ret = jvalue.get_##ResultType(); \ 1887 return ret;\ 1888 JNI_END 1889 1890 // the runtime type of subword integral basic types is integer 1891 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN 1892 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1893 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1894 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE 1895 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1896 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1897 DEFINE_CALLMETHODA(jchar, Char, T_CHAR 1898 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1899 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1900 DEFINE_CALLMETHODA(jshort, Short, T_SHORT 1901 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1902 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1903 1904 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT 1905 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1906 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1907 DEFINE_CALLMETHODA(jint, Int, T_INT, 1908 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1909 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1910 DEFINE_CALLMETHODA(jlong, Long, T_LONG 1911 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1912 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1913 // Float and double probes don't return value because dtrace doesn't currently support it 1914 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT 1915 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1916 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1917 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE 1918 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1919 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1920 1921 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN()); 1922 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN()); 1923 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN()); 1924 1925 #endif /* USDT2 */ 1926 1927 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) 1928 JNIWrapper("CallVoidMethod"); 1929 #ifndef USDT2 1930 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); 1931 #else /* USDT2 */ 1932 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY( 1933 env, obj, (uintptr_t) methodID); 1934 #endif /* USDT2 */ 1935 DT_VOID_RETURN_MARK(CallVoidMethod); 1936 1937 va_list args; 1938 va_start(args, methodID); 1939 JavaValue jvalue(T_VOID); 1940 JNI_ArgumentPusherVaArg ap(methodID, args); 1941 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1942 va_end(args); 1943 JNI_END 1944 1945 1946 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) 1947 JNIWrapper("CallVoidMethodV"); 1948 #ifndef USDT2 1949 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); 1950 #else /* USDT2 */ 1951 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY( 1952 env, obj, (uintptr_t) methodID); 1953 #endif /* USDT2 */ 1954 DT_VOID_RETURN_MARK(CallVoidMethodV); 1955 1956 JavaValue jvalue(T_VOID); 1957 JNI_ArgumentPusherVaArg ap(methodID, args); 1958 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1959 JNI_END 1960 1961 1962 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) 1963 JNIWrapper("CallVoidMethodA"); 1964 #ifndef USDT2 1965 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); 1966 #else /* USDT2 */ 1967 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY( 1968 env, obj, (uintptr_t) methodID); 1969 #endif /* USDT2 */ 1970 DT_VOID_RETURN_MARK(CallVoidMethodA); 1971 1972 JavaValue jvalue(T_VOID); 1973 JNI_ArgumentPusherArray ap(methodID, args); 1974 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1975 JNI_END 1976 1977 1978 #ifndef USDT2 1979 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ 1980 \ 1981 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ 1982 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ 1983 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ 1984 \ 1985 JNI_ENTRY(ResultType, \ 1986 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1987 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1988 \ 1989 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ 1990 ResultType ret;\ 1991 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1992 (const ResultType&)ret);\ 1993 \ 1994 va_list args; \ 1995 va_start(args, methodID); \ 1996 JavaValue jvalue(Tag); \ 1997 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1998 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1999 va_end(args); \ 2000 ret = jvalue.get_##ResultType(); \ 2001 return ret;\ 2002 JNI_END \ 2003 \ 2004 JNI_ENTRY(ResultType, \ 2005 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2006 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ 2007 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ 2008 ResultType ret;\ 2009 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2010 (const ResultType&)ret);\ 2011 \ 2012 JavaValue jvalue(Tag); \ 2013 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2014 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2015 ret = jvalue.get_##ResultType(); \ 2016 return ret;\ 2017 JNI_END \ 2018 \ 2019 JNI_ENTRY(ResultType, \ 2020 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2021 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2022 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ 2023 ResultType ret;\ 2024 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2025 (const ResultType&)ret);\ 2026 \ 2027 JavaValue jvalue(Tag); \ 2028 JNI_ArgumentPusherArray ap(methodID, args); \ 2029 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2030 ret = jvalue.get_##ResultType(); \ 2031 return ret;\ 2032 JNI_END 2033 2034 // the runtime type of subword integral basic types is integer 2035 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) 2036 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) 2037 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) 2038 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) 2039 2040 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) 2041 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) 2042 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) 2043 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) 2044 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) 2045 2046 2047 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); 2048 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); 2049 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); 2050 2051 #else /* USDT2 */ 2052 2053 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \ 2054 , EntryProbe, ReturnProbe) \ 2055 \ 2056 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \ 2057 , ReturnProbe);\ 2058 \ 2059 JNI_ENTRY(ResultType, \ 2060 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 2061 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 2062 \ 2063 EntryProbe;\ 2064 ResultType ret;\ 2065 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 2066 (const ResultType&)ret);\ 2067 \ 2068 va_list args; \ 2069 va_start(args, methodID); \ 2070 JavaValue jvalue(Tag); \ 2071 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2072 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2073 va_end(args); \ 2074 ret = jvalue.get_##ResultType(); \ 2075 return ret;\ 2076 JNI_END 2077 2078 // the runtime type of subword integral basic types is integer 2079 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN 2080 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2081 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref)) 2082 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE 2083 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2084 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref)) 2085 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR 2086 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2087 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref)) 2088 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT 2089 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2090 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref)) 2091 2092 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT 2093 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2094 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref)) 2095 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT 2096 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2097 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref)) 2098 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG 2099 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2100 // Float and double probes don't return value because dtrace doesn't currently support it 2101 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref)) 2102 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT 2103 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2104 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN()) 2105 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE 2106 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2107 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN()) 2108 2109 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \ 2110 , EntryProbe, ReturnProbe) \ 2111 \ 2112 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \ 2113 , ReturnProbe);\ 2114 \ 2115 JNI_ENTRY(ResultType, \ 2116 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2117 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \ 2118 \ 2119 EntryProbe;\ 2120 ResultType ret;\ 2121 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2122 (const ResultType&)ret);\ 2123 \ 2124 JavaValue jvalue(Tag); \ 2125 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2126 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2127 ret = jvalue.get_##ResultType(); \ 2128 return ret;\ 2129 JNI_END 2130 2131 // the runtime type of subword integral basic types is integer 2132 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN 2133 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2134 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref)) 2135 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE 2136 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2137 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref)) 2138 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR 2139 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2140 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref)) 2141 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT 2142 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2143 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref)) 2144 2145 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT 2146 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2147 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref)) 2148 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT 2149 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2150 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref)) 2151 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG 2152 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2153 // Float and double probes don't return value because dtrace doesn't currently support it 2154 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref)) 2155 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT 2156 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2157 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN()) 2158 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE 2159 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2160 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN()) 2161 2162 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \ 2163 , EntryProbe, ReturnProbe) \ 2164 \ 2165 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \ 2166 , ReturnProbe);\ 2167 \ 2168 JNI_ENTRY(ResultType, \ 2169 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2170 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2171 \ 2172 EntryProbe;\ 2173 ResultType ret;\ 2174 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2175 (const ResultType&)ret);\ 2176 \ 2177 JavaValue jvalue(Tag); \ 2178 JNI_ArgumentPusherArray ap(methodID, args); \ 2179 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2180 ret = jvalue.get_##ResultType(); \ 2181 return ret;\ 2182 JNI_END 2183 2184 // the runtime type of subword integral basic types is integer 2185 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN 2186 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2187 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref)) 2188 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE 2189 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2190 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref)) 2191 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR 2192 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2193 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref)) 2194 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT 2195 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2196 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref)) 2197 2198 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT 2199 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2200 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref)) 2201 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT 2202 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2203 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref)) 2204 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG 2205 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2206 // Float and double probes don't return value because dtrace doesn't currently support it 2207 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref)) 2208 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT 2209 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2210 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN()) 2211 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE 2212 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2213 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN()) 2214 2215 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod 2216 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN()); 2217 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV 2218 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN()); 2219 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA 2220 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN()); 2221 #endif /* USDT2 */ 2222 2223 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) 2224 JNIWrapper("CallNonvirtualVoidMethod"); 2225 2226 #ifndef USDT2 2227 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, 2228 env, obj, cls, methodID); 2229 #else /* USDT2 */ 2230 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY( 2231 env, obj, cls, (uintptr_t) methodID); 2232 #endif /* USDT2 */ 2233 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); 2234 2235 va_list args; 2236 va_start(args, methodID); 2237 JavaValue jvalue(T_VOID); 2238 JNI_ArgumentPusherVaArg ap(methodID, args); 2239 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2240 va_end(args); 2241 JNI_END 2242 2243 2244 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) 2245 JNIWrapper("CallNonvirtualVoidMethodV"); 2246 2247 #ifndef USDT2 2248 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, 2249 env, obj, cls, methodID); 2250 #else /* USDT2 */ 2251 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY( 2252 env, obj, cls, (uintptr_t) methodID); 2253 #endif /* USDT2 */ 2254 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); 2255 2256 JavaValue jvalue(T_VOID); 2257 JNI_ArgumentPusherVaArg ap(methodID, args); 2258 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2259 JNI_END 2260 2261 2262 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) 2263 JNIWrapper("CallNonvirtualVoidMethodA"); 2264 #ifndef USDT2 2265 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, 2266 env, obj, cls, methodID); 2267 #else /* USDT2 */ 2268 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY( 2269 env, obj, cls, (uintptr_t) methodID); 2270 #endif /* USDT2 */ 2271 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); 2272 JavaValue jvalue(T_VOID); 2273 JNI_ArgumentPusherArray ap(methodID, args); 2274 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2275 JNI_END 2276 2277 2278 #ifndef USDT2 2279 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ 2280 \ 2281 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ 2282 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ 2283 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ 2284 \ 2285 JNI_ENTRY(ResultType, \ 2286 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2287 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2288 \ 2289 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ 2290 ResultType ret = 0;\ 2291 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2292 (const ResultType&)ret);\ 2293 \ 2294 va_list args; \ 2295 va_start(args, methodID); \ 2296 JavaValue jvalue(Tag); \ 2297 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2298 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2299 va_end(args); \ 2300 ret = jvalue.get_##ResultType(); \ 2301 return ret;\ 2302 JNI_END \ 2303 \ 2304 JNI_ENTRY(ResultType, \ 2305 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2306 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2307 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ 2308 ResultType ret = 0;\ 2309 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2310 (const ResultType&)ret);\ 2311 \ 2312 JavaValue jvalue(Tag); \ 2313 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2314 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2315 ret = jvalue.get_##ResultType(); \ 2316 return ret;\ 2317 JNI_END \ 2318 \ 2319 JNI_ENTRY(ResultType, \ 2320 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2321 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2322 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ 2323 ResultType ret = 0;\ 2324 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2325 (const ResultType&)ret);\ 2326 \ 2327 JavaValue jvalue(Tag); \ 2328 JNI_ArgumentPusherArray ap(methodID, args); \ 2329 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2330 ret = jvalue.get_##ResultType(); \ 2331 return ret;\ 2332 JNI_END 2333 2334 // the runtime type of subword integral basic types is integer 2335 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) 2336 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) 2337 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) 2338 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) 2339 2340 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) 2341 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) 2342 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) 2343 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) 2344 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) 2345 2346 2347 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); 2348 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); 2349 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); 2350 2351 #else /* USDT2 */ 2352 2353 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \ 2354 , EntryProbe, ResultProbe) \ 2355 \ 2356 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \ 2357 , ResultProbe); \ 2358 \ 2359 JNI_ENTRY(ResultType, \ 2360 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2361 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2362 \ 2363 EntryProbe; \ 2364 ResultType ret = 0;\ 2365 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2366 (const ResultType&)ret);\ 2367 \ 2368 va_list args; \ 2369 va_start(args, methodID); \ 2370 JavaValue jvalue(Tag); \ 2371 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2372 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2373 va_end(args); \ 2374 ret = jvalue.get_##ResultType(); \ 2375 return ret;\ 2376 JNI_END 2377 2378 // the runtime type of subword integral basic types is integer 2379 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN 2380 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2381 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref)); 2382 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE 2383 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2384 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref)); 2385 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR 2386 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2387 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref)); 2388 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT 2389 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2390 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref)); 2391 2392 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT 2393 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2394 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref)); 2395 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT 2396 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2397 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref)); 2398 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG 2399 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2400 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref)); 2401 // Float and double probes don't return value because dtrace doesn't currently support it 2402 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT 2403 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2404 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN()); 2405 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE 2406 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2407 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN()); 2408 2409 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \ 2410 , EntryProbe, ResultProbe) \ 2411 \ 2412 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \ 2413 , ResultProbe); \ 2414 \ 2415 JNI_ENTRY(ResultType, \ 2416 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2417 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2418 \ 2419 EntryProbe; \ 2420 ResultType ret = 0;\ 2421 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2422 (const ResultType&)ret);\ 2423 \ 2424 JavaValue jvalue(Tag); \ 2425 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2426 /* Make sure class is initialized before trying to invoke its method */ \ 2427 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \ 2428 Klass::cast(k())->initialize(CHECK_0); \ 2429 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2430 va_end(args); \ 2431 ret = jvalue.get_##ResultType(); \ 2432 return ret;\ 2433 JNI_END 2434 2435 // the runtime type of subword integral basic types is integer 2436 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN 2437 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2438 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref)); 2439 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE 2440 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2441 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref)); 2442 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR 2443 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2444 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref)); 2445 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT 2446 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2447 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref)); 2448 2449 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT 2450 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2451 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref)); 2452 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT 2453 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2454 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref)); 2455 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG 2456 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2457 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref)); 2458 // Float and double probes don't return value because dtrace doesn't currently support it 2459 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT 2460 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2461 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN()); 2462 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE 2463 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2464 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN()); 2465 2466 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \ 2467 , EntryProbe, ResultProbe) \ 2468 \ 2469 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \ 2470 , ResultProbe); \ 2471 \ 2472 JNI_ENTRY(ResultType, \ 2473 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2474 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2475 \ 2476 EntryProbe; \ 2477 ResultType ret = 0;\ 2478 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2479 (const ResultType&)ret);\ 2480 \ 2481 JavaValue jvalue(Tag); \ 2482 JNI_ArgumentPusherArray ap(methodID, args); \ 2483 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2484 ret = jvalue.get_##ResultType(); \ 2485 return ret;\ 2486 JNI_END 2487 2488 // the runtime type of subword integral basic types is integer 2489 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN 2490 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2491 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref)); 2492 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE 2493 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2494 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref)); 2495 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR 2496 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2497 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref)); 2498 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT 2499 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2500 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref)); 2501 2502 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT 2503 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2504 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref)); 2505 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT 2506 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2507 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref)); 2508 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG 2509 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2510 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref)); 2511 // Float and double probes don't return value because dtrace doesn't currently support it 2512 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT 2513 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2514 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN()); 2515 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE 2516 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2517 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN()); 2518 2519 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod 2520 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN()); 2521 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV 2522 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN()); 2523 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA 2524 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN()); 2525 #endif /* USDT2 */ 2526 2527 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) 2528 JNIWrapper("CallStaticVoidMethod"); 2529 #ifndef USDT2 2530 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); 2531 #else /* USDT2 */ 2532 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY( 2533 env, cls, (uintptr_t) methodID); 2534 #endif /* USDT2 */ 2535 DT_VOID_RETURN_MARK(CallStaticVoidMethod); 2536 2537 va_list args; 2538 va_start(args, methodID); 2539 JavaValue jvalue(T_VOID); 2540 JNI_ArgumentPusherVaArg ap(methodID, args); 2541 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2542 va_end(args); 2543 JNI_END 2544 2545 2546 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) 2547 JNIWrapper("CallStaticVoidMethodV"); 2548 #ifndef USDT2 2549 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); 2550 #else /* USDT2 */ 2551 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY( 2552 env, cls, (uintptr_t) methodID); 2553 #endif /* USDT2 */ 2554 DT_VOID_RETURN_MARK(CallStaticVoidMethodV); 2555 2556 JavaValue jvalue(T_VOID); 2557 JNI_ArgumentPusherVaArg ap(methodID, args); 2558 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2559 JNI_END 2560 2561 2562 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) 2563 JNIWrapper("CallStaticVoidMethodA"); 2564 #ifndef USDT2 2565 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); 2566 #else /* USDT2 */ 2567 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY( 2568 env, cls, (uintptr_t) methodID); 2569 #endif /* USDT2 */ 2570 DT_VOID_RETURN_MARK(CallStaticVoidMethodA); 2571 2572 JavaValue jvalue(T_VOID); 2573 JNI_ArgumentPusherArray ap(methodID, args); 2574 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2575 JNI_END 2576 2577 2578 // 2579 // Accessing Fields 2580 // 2581 2582 2583 #ifndef USDT2 2584 DT_RETURN_MARK_DECL(GetFieldID, jfieldID); 2585 #else /* USDT2 */ 2586 DT_RETURN_MARK_DECL(GetFieldID, jfieldID 2587 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref)); 2588 #endif /* USDT2 */ 2589 2590 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, 2591 const char *name, const char *sig)) 2592 JNIWrapper("GetFieldID"); 2593 #ifndef USDT2 2594 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); 2595 #else /* USDT2 */ 2596 HOTSPOT_JNI_GETFIELDID_ENTRY( 2597 env, clazz, (char *) name, (char *) sig); 2598 #endif /* USDT2 */ 2599 jfieldID ret = 0; 2600 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); 2601 2602 // The class should have been loaded (we have an instance of the class 2603 // passed in) so the field and signature should already be in the symbol 2604 // table. If they're not there, the field doesn't exist. 2605 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2606 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2607 if (fieldname == NULL || signame == NULL) { 2608 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2609 } 2610 KlassHandle k(THREAD, 2611 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2612 // Make sure class is initialized before handing id's out to fields 2613 Klass::cast(k())->initialize(CHECK_NULL); 2614 2615 fieldDescriptor fd; 2616 if (!Klass::cast(k())->oop_is_instance() || 2617 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) { 2618 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2619 } 2620 2621 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop 2622 // It may also have hash bits for k, if VerifyJNIFields is turned on. 2623 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); 2624 return ret; 2625 JNI_END 2626 2627 2628 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) 2629 JNIWrapper("GetObjectField"); 2630 #ifndef USDT2 2631 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); 2632 #else /* USDT2 */ 2633 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY( 2634 env, obj, (uintptr_t) fieldID); 2635 #endif /* USDT2 */ 2636 oop o = JNIHandles::resolve_non_null(obj); 2637 Klass* k = o->klass(); 2638 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2639 // Keep JVMTI addition small and only check enabled flag here. 2640 // jni_GetField_probe() assumes that is okay to create handles. 2641 if (JvmtiExport::should_post_field_access()) { 2642 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); 2643 } 2644 jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); 2645 #ifndef SERIALGC 2646 // If G1 is enabled and we are accessing the value of the referent 2647 // field in a reference object then we need to register a non-null 2648 // referent with the SATB barrier. 2649 if (UseG1GC) { 2650 bool needs_barrier = false; 2651 2652 if (ret != NULL && 2653 offset == java_lang_ref_Reference::referent_offset && 2654 InstanceKlass::cast(k)->reference_type() != REF_NONE) { 2655 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); 2656 needs_barrier = true; 2657 } 2658 2659 if (needs_barrier) { 2660 oop referent = JNIHandles::resolve(ret); 2661 G1SATBCardTableModRefBS::enqueue(referent); 2662 } 2663 } 2664 #endif // SERIALGC 2665 #ifndef USDT2 2666 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); 2667 #else /* USDT2 */ 2668 HOTSPOT_JNI_GETOBJECTFIELD_RETURN( 2669 ret); 2670 #endif /* USDT2 */ 2671 return ret; 2672 JNI_END 2673 2674 2675 #ifndef USDT2 2676 #define DEFINE_GETFIELD(Return,Fieldname,Result) \ 2677 \ 2678 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ 2679 \ 2680 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2681 JNIWrapper("Get" XSTR(Result) "Field"); \ 2682 \ 2683 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ 2684 Return ret = 0;\ 2685 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2686 \ 2687 oop o = JNIHandles::resolve_non_null(obj); \ 2688 Klass* k = o->klass(); \ 2689 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2690 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2691 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2692 /* and creates a ResetNoHandleMark. */ \ 2693 if (JvmtiExport::should_post_field_access()) { \ 2694 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2695 } \ 2696 ret = o->Fieldname##_field(offset); \ 2697 return ret; \ 2698 JNI_END 2699 2700 DEFINE_GETFIELD(jboolean, bool, Boolean) 2701 DEFINE_GETFIELD(jbyte, byte, Byte) 2702 DEFINE_GETFIELD(jchar, char, Char) 2703 DEFINE_GETFIELD(jshort, short, Short) 2704 DEFINE_GETFIELD(jint, int, Int) 2705 DEFINE_GETFIELD(jlong, long, Long) 2706 DEFINE_GETFIELD(jfloat, float, Float) 2707 DEFINE_GETFIELD(jdouble, double, Double) 2708 2709 #else /* USDT2 */ 2710 2711 #define DEFINE_GETFIELD(Return,Fieldname,Result \ 2712 , EntryProbe, ReturnProbe) \ 2713 \ 2714 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \ 2715 , ReturnProbe); \ 2716 \ 2717 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2718 JNIWrapper("Get" XSTR(Result) "Field"); \ 2719 \ 2720 EntryProbe; \ 2721 Return ret = 0;\ 2722 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2723 \ 2724 oop o = JNIHandles::resolve_non_null(obj); \ 2725 Klass* k = o->klass(); \ 2726 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2727 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2728 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2729 /* and creates a ResetNoHandleMark. */ \ 2730 if (JvmtiExport::should_post_field_access()) { \ 2731 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2732 } \ 2733 ret = o->Fieldname##_field(offset); \ 2734 return ret; \ 2735 JNI_END 2736 2737 DEFINE_GETFIELD(jboolean, bool, Boolean 2738 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2739 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref)) 2740 DEFINE_GETFIELD(jbyte, byte, Byte 2741 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2742 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref)) 2743 DEFINE_GETFIELD(jchar, char, Char 2744 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2745 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref)) 2746 DEFINE_GETFIELD(jshort, short, Short 2747 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2748 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref)) 2749 DEFINE_GETFIELD(jint, int, Int 2750 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2751 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref)) 2752 DEFINE_GETFIELD(jlong, long, Long 2753 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2754 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref)) 2755 // Float and double probes don't return value because dtrace doesn't currently support it 2756 DEFINE_GETFIELD(jfloat, float, Float 2757 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2758 HOTSPOT_JNI_GETFLOATFIELD_RETURN()) 2759 DEFINE_GETFIELD(jdouble, double, Double 2760 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2761 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN()) 2762 #endif /* USDT2 */ 2763 2764 address jni_GetBooleanField_addr() { 2765 return (address)jni_GetBooleanField; 2766 } 2767 address jni_GetByteField_addr() { 2768 return (address)jni_GetByteField; 2769 } 2770 address jni_GetCharField_addr() { 2771 return (address)jni_GetCharField; 2772 } 2773 address jni_GetShortField_addr() { 2774 return (address)jni_GetShortField; 2775 } 2776 address jni_GetIntField_addr() { 2777 return (address)jni_GetIntField; 2778 } 2779 address jni_GetLongField_addr() { 2780 return (address)jni_GetLongField; 2781 } 2782 address jni_GetFloatField_addr() { 2783 return (address)jni_GetFloatField; 2784 } 2785 address jni_GetDoubleField_addr() { 2786 return (address)jni_GetDoubleField; 2787 } 2788 2789 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) 2790 JNIWrapper("SetObjectField"); 2791 #ifndef USDT2 2792 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); 2793 #else /* USDT2 */ 2794 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY( 2795 env, obj, (uintptr_t) fieldID, value); 2796 #endif /* USDT2 */ 2797 oop o = JNIHandles::resolve_non_null(obj); 2798 Klass* k = o->klass(); 2799 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2800 // Keep JVMTI addition small and only check enabled flag here. 2801 // jni_SetField_probe_nh() assumes that is not okay to create handles 2802 // and creates a ResetNoHandleMark. 2803 if (JvmtiExport::should_post_field_modification()) { 2804 jvalue field_value; 2805 field_value.l = value; 2806 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); 2807 } 2808 o->obj_field_put(offset, JNIHandles::resolve(value)); 2809 #ifndef USDT2 2810 DTRACE_PROBE(hotspot_jni, SetObjectField__return); 2811 #else /* USDT2 */ 2812 HOTSPOT_JNI_SETOBJECTFIELD_RETURN( 2813 ); 2814 #endif /* USDT2 */ 2815 JNI_END 2816 2817 #ifndef USDT2 2818 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ 2819 \ 2820 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2821 JNIWrapper("Set" XSTR(Result) "Field"); \ 2822 \ 2823 HS_DTRACE_PROBE_CDECL_N(hotspot_jni, Set##Result##Field__entry, \ 2824 ( JNIEnv*, jobject, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \ 2825 HS_DTRACE_PROBE_N(hotspot_jni, Set##Result##Field__entry, \ 2826 ( env, obj, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \ 2827 \ 2828 oop o = JNIHandles::resolve_non_null(obj); \ 2829 Klass* k = o->klass(); \ 2830 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2831 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2832 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2833 /* and creates a ResetNoHandleMark. */ \ 2834 if (JvmtiExport::should_post_field_modification()) { \ 2835 jvalue field_value; \ 2836 field_value.unionType = value; \ 2837 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2838 } \ 2839 o->Fieldname##_field_put(offset, value); \ 2840 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ 2841 JNI_END 2842 2843 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) 2844 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) 2845 DEFINE_SETFIELD(jchar, char, Char, 'C', c) 2846 DEFINE_SETFIELD(jshort, short, Short, 'S', s) 2847 DEFINE_SETFIELD(jint, int, Int, 'I', i) 2848 DEFINE_SETFIELD(jlong, long, Long, 'J', j) 2849 DEFINE_SETFIELD(jfloat, float, Float, 'F', f) 2850 DEFINE_SETFIELD(jdouble, double, Double, 'D', d) 2851 2852 #else /* USDT2 */ 2853 2854 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \ 2855 , EntryProbe, ReturnProbe) \ 2856 \ 2857 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2858 JNIWrapper("Set" XSTR(Result) "Field"); \ 2859 \ 2860 EntryProbe; \ 2861 \ 2862 oop o = JNIHandles::resolve_non_null(obj); \ 2863 Klass* k = o->klass(); \ 2864 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2865 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2866 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2867 /* and creates a ResetNoHandleMark. */ \ 2868 if (JvmtiExport::should_post_field_modification()) { \ 2869 jvalue field_value; \ 2870 field_value.unionType = value; \ 2871 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2872 } \ 2873 o->Fieldname##_field_put(offset, value); \ 2874 ReturnProbe; \ 2875 JNI_END 2876 2877 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z 2878 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2879 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 2880 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b 2881 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2882 HOTSPOT_JNI_SETBYTEFIELD_RETURN()) 2883 DEFINE_SETFIELD(jchar, char, Char, 'C', c 2884 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2885 HOTSPOT_JNI_SETCHARFIELD_RETURN()) 2886 DEFINE_SETFIELD(jshort, short, Short, 'S', s 2887 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2888 HOTSPOT_JNI_SETSHORTFIELD_RETURN()) 2889 DEFINE_SETFIELD(jint, int, Int, 'I', i 2890 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2891 HOTSPOT_JNI_SETINTFIELD_RETURN()) 2892 DEFINE_SETFIELD(jlong, long, Long, 'J', j 2893 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2894 HOTSPOT_JNI_SETLONGFIELD_RETURN()) 2895 // Float and double probes don't return value because dtrace doesn't currently support it 2896 DEFINE_SETFIELD(jfloat, float, Float, 'F', f 2897 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2898 HOTSPOT_JNI_SETFLOATFIELD_RETURN()) 2899 DEFINE_SETFIELD(jdouble, double, Double, 'D', d 2900 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2901 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN()) 2902 #endif /* USDT2 */ 2903 2904 #ifndef USDT2 2905 DT_RETURN_MARK_DECL(ToReflectedField, jobject); 2906 #else /* USDT2 */ 2907 DT_RETURN_MARK_DECL(ToReflectedField, jobject 2908 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref)); 2909 #endif /* USDT2 */ 2910 2911 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) 2912 JNIWrapper("ToReflectedField"); 2913 #ifndef USDT2 2914 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, 2915 env, cls, fieldID, isStatic); 2916 #else /* USDT2 */ 2917 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY( 2918 env, cls, (uintptr_t) fieldID, isStatic); 2919 #endif /* USDT2 */ 2920 jobject ret = NULL; 2921 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); 2922 2923 fieldDescriptor fd; 2924 bool found = false; 2925 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); 2926 2927 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); 2928 2929 if (isStatic) { 2930 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*. 2931 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2932 assert(id->is_static_field_id(), "invalid static field id"); 2933 found = id->find_local_field(&fd); 2934 } else { 2935 // Non-static field. The fieldID is really the offset of the field within the instanceOop. 2936 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2937 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); 2938 } 2939 assert(found, "bad fieldID passed into jni_ToReflectedField"); 2940 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); 2941 ret = JNIHandles::make_local(env, reflected); 2942 return ret; 2943 JNI_END 2944 2945 2946 // 2947 // Accessing Static Fields 2948 // 2949 #ifndef USDT2 2950 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); 2951 #else /* USDT2 */ 2952 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID 2953 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref)); 2954 #endif /* USDT2 */ 2955 2956 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, 2957 const char *name, const char *sig)) 2958 JNIWrapper("GetStaticFieldID"); 2959 #ifndef USDT2 2960 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); 2961 #else /* USDT2 */ 2962 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY( 2963 env, clazz, (char *) name, (char *) sig); 2964 #endif /* USDT2 */ 2965 jfieldID ret = NULL; 2966 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); 2967 2968 // The class should have been loaded (we have an instance of the class 2969 // passed in) so the field and signature should already be in the symbol 2970 // table. If they're not there, the field doesn't exist. 2971 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2972 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2973 if (fieldname == NULL || signame == NULL) { 2974 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2975 } 2976 KlassHandle k(THREAD, 2977 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2978 // Make sure class is initialized before handing id's out to static fields 2979 Klass::cast(k())->initialize(CHECK_NULL); 2980 2981 fieldDescriptor fd; 2982 if (!Klass::cast(k())->oop_is_instance() || 2983 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) { 2984 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2985 } 2986 2987 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 2988 JNIid* id = InstanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset()); 2989 debug_only(id->set_is_static_field_id();) 2990 2991 debug_only(id->verify(fd.field_holder())); 2992 2993 ret = jfieldIDWorkaround::to_static_jfieldID(id); 2994 return ret; 2995 JNI_END 2996 2997 2998 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) 2999 JNIWrapper("GetStaticObjectField"); 3000 #ifndef USDT2 3001 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); 3002 #else /* USDT2 */ 3003 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY( 3004 env, clazz, (uintptr_t) fieldID); 3005 #endif /* USDT2 */ 3006 #if INCLUDE_JNI_CHECK 3007 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);) 3008 #endif // INCLUDE_JNI_CHECK 3009 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3010 assert(id->is_static_field_id(), "invalid static field id"); 3011 // Keep JVMTI addition small and only check enabled flag here. 3012 // jni_GetField_probe() assumes that is okay to create handles. 3013 if (JvmtiExport::should_post_field_access()) { 3014 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); 3015 } 3016 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset())); 3017 #ifndef USDT2 3018 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); 3019 #else /* USDT2 */ 3020 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN( 3021 ret); 3022 #endif /* USDT2 */ 3023 return ret; 3024 JNI_END 3025 3026 #ifndef USDT2 3027 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ 3028 \ 3029 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ 3030 \ 3031 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3032 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3033 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ 3034 Return ret = 0;\ 3035 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3036 (const Return&)ret);\ 3037 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3038 assert(id->is_static_field_id(), "invalid static field id"); \ 3039 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3040 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3041 if (JvmtiExport::should_post_field_access()) { \ 3042 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3043 } \ 3044 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3045 return ret;\ 3046 JNI_END 3047 3048 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) 3049 DEFINE_GETSTATICFIELD(jbyte, byte, Byte) 3050 DEFINE_GETSTATICFIELD(jchar, char, Char) 3051 DEFINE_GETSTATICFIELD(jshort, short, Short) 3052 DEFINE_GETSTATICFIELD(jint, int, Int) 3053 DEFINE_GETSTATICFIELD(jlong, long, Long) 3054 DEFINE_GETSTATICFIELD(jfloat, float, Float) 3055 DEFINE_GETSTATICFIELD(jdouble, double, Double) 3056 3057 #else /* USDT2 */ 3058 3059 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \ 3060 , EntryProbe, ReturnProbe) \ 3061 \ 3062 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \ 3063 , ReturnProbe); \ 3064 \ 3065 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3066 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3067 EntryProbe; \ 3068 Return ret = 0;\ 3069 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3070 (const Return&)ret);\ 3071 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3072 assert(id->is_static_field_id(), "invalid static field id"); \ 3073 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3074 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3075 if (JvmtiExport::should_post_field_access()) { \ 3076 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3077 } \ 3078 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3079 return ret;\ 3080 JNI_END 3081 3082 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean 3083 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref)) 3084 DEFINE_GETSTATICFIELD(jbyte, byte, Byte 3085 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) ) 3086 DEFINE_GETSTATICFIELD(jchar, char, Char 3087 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) ) 3088 DEFINE_GETSTATICFIELD(jshort, short, Short 3089 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) ) 3090 DEFINE_GETSTATICFIELD(jint, int, Int 3091 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) ) 3092 DEFINE_GETSTATICFIELD(jlong, long, Long 3093 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) ) 3094 // Float and double probes don't return value because dtrace doesn't currently support it 3095 DEFINE_GETSTATICFIELD(jfloat, float, Float 3096 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() ) 3097 DEFINE_GETSTATICFIELD(jdouble, double, Double 3098 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() ) 3099 #endif /* USDT2 */ 3100 3101 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) 3102 JNIWrapper("SetStaticObjectField"); 3103 #ifndef USDT2 3104 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); 3105 #else /* USDT2 */ 3106 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY( 3107 env, clazz, (uintptr_t) fieldID, value); 3108 #endif /* USDT2 */ 3109 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3110 assert(id->is_static_field_id(), "invalid static field id"); 3111 // Keep JVMTI addition small and only check enabled flag here. 3112 // jni_SetField_probe() assumes that is okay to create handles. 3113 if (JvmtiExport::should_post_field_modification()) { 3114 jvalue field_value; 3115 field_value.l = value; 3116 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); 3117 } 3118 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value)); 3119 #ifndef USDT2 3120 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); 3121 #else /* USDT2 */ 3122 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN( 3123 ); 3124 #endif /* USDT2 */ 3125 JNI_END 3126 3127 3128 #ifndef USDT2 3129 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ 3130 \ 3131 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3132 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3133 HS_DTRACE_PROBE_CDECL_N(hotspot_jni, SetStatic##Result##Field__entry,\ 3134 ( JNIEnv*, jclass, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \ 3135 HS_DTRACE_PROBE_N(hotspot_jni, SetStatic##Result##Field__entry, \ 3136 ( env, clazz, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \ 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 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\ 3149 JNI_END 3150 3151 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z) 3152 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b) 3153 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c) 3154 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s) 3155 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i) 3156 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j) 3157 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f) 3158 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d) 3159 3160 #else /* USDT2 */ 3161 3162 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \ 3163 , EntryProbe, ReturnProbe) \ 3164 \ 3165 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3166 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3167 EntryProbe; \ 3168 \ 3169 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3170 assert(id->is_static_field_id(), "invalid static field id"); \ 3171 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3172 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3173 if (JvmtiExport::should_post_field_modification()) { \ 3174 jvalue field_value; \ 3175 field_value.unionType = value; \ 3176 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3177 } \ 3178 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3179 ReturnProbe;\ 3180 JNI_END 3181 3182 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z 3183 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value), 3184 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 3185 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b 3186 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3187 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN()) 3188 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c 3189 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3190 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN()) 3191 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s 3192 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3193 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN()) 3194 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i 3195 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3196 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN()) 3197 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j 3198 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3199 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN()) 3200 // Float and double probes don't return value because dtrace doesn't currently support it 3201 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f 3202 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3203 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN()) 3204 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d 3205 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3206 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN()) 3207 #endif /* USDT2 */ 3208 3209 // 3210 // String Operations 3211 // 3212 3213 // Unicode Interface 3214 3215 #ifndef USDT2 3216 DT_RETURN_MARK_DECL(NewString, jstring); 3217 #else /* USDT2 */ 3218 DT_RETURN_MARK_DECL(NewString, jstring 3219 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref)); 3220 #endif /* USDT2 */ 3221 3222 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len)) 3223 JNIWrapper("NewString"); 3224 #ifndef USDT2 3225 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len); 3226 #else /* USDT2 */ 3227 HOTSPOT_JNI_NEWSTRING_ENTRY( 3228 env, (uint16_t *) unicodeChars, len); 3229 #endif /* USDT2 */ 3230 jstring ret = NULL; 3231 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret); 3232 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL); 3233 ret = (jstring) JNIHandles::make_local(env, string); 3234 return ret; 3235 JNI_END 3236 3237 3238 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string)) 3239 JNIWrapper("GetStringLength"); 3240 #ifndef USDT2 3241 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string); 3242 #else /* USDT2 */ 3243 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY( 3244 env, string); 3245 #endif /* USDT2 */ 3246 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string)); 3247 #ifndef USDT2 3248 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret); 3249 #else /* USDT2 */ 3250 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN( 3251 ret); 3252 #endif /* USDT2 */ 3253 return ret; 3254 JNI_END 3255 3256 3257 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars( 3258 JNIEnv *env, jstring string, jboolean *isCopy)) 3259 JNIWrapper("GetStringChars"); 3260 #ifndef USDT2 3261 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy); 3262 #else /* USDT2 */ 3263 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY( 3264 env, string, (uintptr_t *) isCopy); 3265 #endif /* USDT2 */ 3266 //%note jni_5 3267 if (isCopy != NULL) { 3268 *isCopy = JNI_TRUE; 3269 } 3270 oop s = JNIHandles::resolve_non_null(string); 3271 int s_len = java_lang_String::length(s); 3272 typeArrayOop s_value = java_lang_String::value(s); 3273 int s_offset = java_lang_String::offset(s); 3274 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination 3275 if (s_len > 0) { 3276 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len); 3277 } 3278 buf[s_len] = 0; 3279 #ifndef USDT2 3280 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf); 3281 #else /* USDT2 */ 3282 HOTSPOT_JNI_GETSTRINGCHARS_RETURN( 3283 buf); 3284 #endif /* USDT2 */ 3285 return buf; 3286 JNI_END 3287 3288 3289 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)) 3290 JNIWrapper("ReleaseStringChars"); 3291 #ifndef USDT2 3292 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars); 3293 #else /* USDT2 */ 3294 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY( 3295 env, str, (uint16_t *) chars); 3296 #endif /* USDT2 */ 3297 //%note jni_6 3298 if (chars != NULL) { 3299 // Since String objects are supposed to be immutable, don't copy any 3300 // new data back. A bad user will have to go after the char array. 3301 FreeHeap((void*) chars); 3302 } 3303 #ifndef USDT2 3304 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return); 3305 #else /* USDT2 */ 3306 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN( 3307 ); 3308 #endif /* USDT2 */ 3309 JNI_END 3310 3311 3312 // UTF Interface 3313 3314 #ifndef USDT2 3315 DT_RETURN_MARK_DECL(NewStringUTF, jstring); 3316 #else /* USDT2 */ 3317 DT_RETURN_MARK_DECL(NewStringUTF, jstring 3318 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref)); 3319 #endif /* USDT2 */ 3320 3321 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes)) 3322 JNIWrapper("NewStringUTF"); 3323 #ifndef USDT2 3324 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes); 3325 #else /* USDT2 */ 3326 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY( 3327 env, (char *) bytes); 3328 #endif /* USDT2 */ 3329 jstring ret; 3330 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret); 3331 3332 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL); 3333 ret = (jstring) JNIHandles::make_local(env, result); 3334 return ret; 3335 JNI_END 3336 3337 3338 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string)) 3339 JNIWrapper("GetStringUTFLength"); 3340 #ifndef USDT2 3341 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string); 3342 #else /* USDT2 */ 3343 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY( 3344 env, string); 3345 #endif /* USDT2 */ 3346 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string)); 3347 #ifndef USDT2 3348 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret); 3349 #else /* USDT2 */ 3350 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN( 3351 ret); 3352 #endif /* USDT2 */ 3353 return ret; 3354 JNI_END 3355 3356 3357 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)) 3358 JNIWrapper("GetStringUTFChars"); 3359 #ifndef USDT2 3360 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy); 3361 #else /* USDT2 */ 3362 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY( 3363 env, string, (uintptr_t *) isCopy); 3364 #endif /* USDT2 */ 3365 oop java_string = JNIHandles::resolve_non_null(string); 3366 size_t length = java_lang_String::utf8_length(java_string); 3367 char* result = AllocateHeap(length + 1, mtInternal); 3368 java_lang_String::as_utf8_string(java_string, result, (int) length + 1); 3369 if (isCopy != NULL) *isCopy = JNI_TRUE; 3370 #ifndef USDT2 3371 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result); 3372 #else /* USDT2 */ 3373 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN( 3374 result); 3375 #endif /* USDT2 */ 3376 return result; 3377 JNI_END 3378 3379 3380 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars)) 3381 JNIWrapper("ReleaseStringUTFChars"); 3382 #ifndef USDT2 3383 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars); 3384 #else /* USDT2 */ 3385 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY( 3386 env, str, (char *) chars); 3387 #endif /* USDT2 */ 3388 if (chars != NULL) { 3389 FreeHeap((char*) chars); 3390 } 3391 #ifndef USDT2 3392 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return); 3393 #else /* USDT2 */ 3394 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN( 3395 ); 3396 #endif /* USDT2 */ 3397 JNI_END 3398 3399 3400 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array)) 3401 JNIWrapper("GetArrayLength"); 3402 #ifndef USDT2 3403 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array); 3404 #else /* USDT2 */ 3405 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY( 3406 env, array); 3407 #endif /* USDT2 */ 3408 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array)); 3409 assert(a->is_array(), "must be array"); 3410 jsize ret = a->length(); 3411 #ifndef USDT2 3412 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret); 3413 #else /* USDT2 */ 3414 HOTSPOT_JNI_GETARRAYLENGTH_RETURN( 3415 ret); 3416 #endif /* USDT2 */ 3417 return ret; 3418 JNI_END 3419 3420 3421 // 3422 // Object Array Operations 3423 // 3424 3425 #ifndef USDT2 3426 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray); 3427 #else /* USDT2 */ 3428 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray 3429 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref)); 3430 #endif /* USDT2 */ 3431 3432 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement)) 3433 JNIWrapper("NewObjectArray"); 3434 #ifndef USDT2 3435 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement); 3436 #else /* USDT2 */ 3437 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY( 3438 env, length, elementClass, initialElement); 3439 #endif /* USDT2 */ 3440 jobjectArray ret = NULL; 3441 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret); 3442 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass))); 3443 Klass* ako = Klass::cast(ek())->array_klass(CHECK_NULL); 3444 KlassHandle ak = KlassHandle(THREAD, ako); 3445 objArrayKlass::cast(ak())->initialize(CHECK_NULL); 3446 objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL); 3447 oop initial_value = JNIHandles::resolve(initialElement); 3448 if (initial_value != NULL) { // array already initialized with NULL 3449 for (int index = 0; index < length; index++) { 3450 result->obj_at_put(index, initial_value); 3451 } 3452 } 3453 ret = (jobjectArray) JNIHandles::make_local(env, result); 3454 return ret; 3455 JNI_END 3456 3457 #ifndef USDT2 3458 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject); 3459 #else /* USDT2 */ 3460 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject 3461 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref)); 3462 #endif /* USDT2 */ 3463 3464 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index)) 3465 JNIWrapper("GetObjectArrayElement"); 3466 #ifndef USDT2 3467 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index); 3468 #else /* USDT2 */ 3469 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY( 3470 env, array, index); 3471 #endif /* USDT2 */ 3472 jobject ret = NULL; 3473 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret); 3474 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3475 if (a->is_within_bounds(index)) { 3476 ret = JNIHandles::make_local(env, a->obj_at(index)); 3477 return ret; 3478 } else { 3479 char buf[jintAsStringSize]; 3480 sprintf(buf, "%d", index); 3481 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3482 } 3483 JNI_END 3484 3485 #ifndef USDT2 3486 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement); 3487 #else /* USDT2 */ 3488 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement 3489 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN()); 3490 #endif /* USDT2 */ 3491 3492 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value)) 3493 JNIWrapper("SetObjectArrayElement"); 3494 #ifndef USDT2 3495 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value); 3496 #else /* USDT2 */ 3497 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY( 3498 env, array, index, value); 3499 #endif /* USDT2 */ 3500 DT_VOID_RETURN_MARK(SetObjectArrayElement); 3501 3502 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3503 oop v = JNIHandles::resolve(value); 3504 if (a->is_within_bounds(index)) { 3505 if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) { 3506 a->obj_at_put(index, v); 3507 } else { 3508 THROW(vmSymbols::java_lang_ArrayStoreException()); 3509 } 3510 } else { 3511 char buf[jintAsStringSize]; 3512 sprintf(buf, "%d", index); 3513 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3514 } 3515 JNI_END 3516 3517 3518 #ifndef USDT2 3519 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \ 3520 \ 3521 DT_RETURN_MARK_DECL(New##Result##Array, Return); \ 3522 \ 3523 JNI_ENTRY(Return, \ 3524 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3525 JNIWrapper("New" XSTR(Result) "Array"); \ 3526 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\ 3527 Return ret = NULL;\ 3528 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3529 \ 3530 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3531 ret = (Return) JNIHandles::make_local(env, obj); \ 3532 return ret;\ 3533 JNI_END 3534 3535 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean) 3536 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte) 3537 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short) 3538 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char) 3539 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int) 3540 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long) 3541 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float) 3542 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double) 3543 3544 #else /* USDT2 */ 3545 3546 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \ 3547 ,EntryProbe,ReturnProbe) \ 3548 \ 3549 DT_RETURN_MARK_DECL(New##Result##Array, Return \ 3550 , ReturnProbe); \ 3551 \ 3552 JNI_ENTRY(Return, \ 3553 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3554 JNIWrapper("New" XSTR(Result) "Array"); \ 3555 EntryProbe; \ 3556 Return ret = NULL;\ 3557 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3558 \ 3559 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3560 ret = (Return) JNIHandles::make_local(env, obj); \ 3561 return ret;\ 3562 JNI_END 3563 3564 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean, 3565 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len), 3566 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref)) 3567 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte, 3568 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len), 3569 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref)) 3570 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short, 3571 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len), 3572 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref)) 3573 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char, 3574 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len), 3575 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref)) 3576 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int, 3577 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len), 3578 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref)) 3579 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long, 3580 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len), 3581 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref)) 3582 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float, 3583 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len), 3584 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref)) 3585 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double, 3586 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len), 3587 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref)) 3588 #endif /* USDT2 */ 3589 3590 // Return an address which will fault if the caller writes to it. 3591 3592 static char* get_bad_address() { 3593 static char* bad_address = NULL; 3594 if (bad_address == NULL) { 3595 size_t size = os::vm_allocation_granularity(); 3596 bad_address = os::reserve_memory(size); 3597 if (bad_address != NULL) { 3598 os::protect_memory(bad_address, size, os::MEM_PROT_READ, 3599 /*is_committed*/false); 3600 } 3601 } 3602 return bad_address; 3603 } 3604 3605 3606 #ifndef USDT2 3607 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \ 3608 \ 3609 JNI_QUICK_ENTRY(ElementType*, \ 3610 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3611 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3612 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\ 3613 /* allocate an chunk of memory in c land */ \ 3614 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3615 ElementType* result; \ 3616 int len = a->length(); \ 3617 if (len == 0) { \ 3618 /* Empty array: legal but useless, can't return NULL. \ 3619 * Return a pointer to something useless. \ 3620 * Avoid asserts in typeArrayOop. */ \ 3621 result = (ElementType*)get_bad_address(); \ 3622 } else { \ 3623 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \ 3624 /* copy the array to the c chunk */ \ 3625 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3626 } \ 3627 if (isCopy) *isCopy = JNI_TRUE; \ 3628 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\ 3629 return result; \ 3630 JNI_END 3631 3632 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3633 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3634 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3635 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3636 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int) 3637 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3638 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3639 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3640 3641 #else /* USDT2 */ 3642 3643 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \ 3644 , EntryProbe, ReturnProbe) \ 3645 \ 3646 JNI_QUICK_ENTRY(ElementType*, \ 3647 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3648 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3649 EntryProbe; \ 3650 /* allocate an chunk of memory in c land */ \ 3651 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3652 ElementType* result; \ 3653 int len = a->length(); \ 3654 if (len == 0) { \ 3655 /* Empty array: legal but useless, can't return NULL. \ 3656 * Return a pointer to something useless. \ 3657 * Avoid asserts in typeArrayOop. */ \ 3658 result = (ElementType*)get_bad_address(); \ 3659 } else { \ 3660 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \ 3661 /* copy the array to the c chunk */ \ 3662 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3663 } \ 3664 if (isCopy) *isCopy = JNI_TRUE; \ 3665 ReturnProbe; \ 3666 return result; \ 3667 JNI_END 3668 3669 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3670 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3671 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result)) 3672 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3673 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3674 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result)) 3675 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3676 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3677 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result)) 3678 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3679 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3680 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result)) 3681 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int 3682 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3683 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result)) 3684 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3685 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3686 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result))) 3687 // Float and double probes don't return value because dtrace doesn't currently support it 3688 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3689 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3690 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result)) 3691 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3692 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3693 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result)) 3694 #endif /* USDT2 */ 3695 3696 #ifndef USDT2 3697 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \ 3698 \ 3699 JNI_QUICK_ENTRY(void, \ 3700 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3701 ElementType *buf, jint mode)) \ 3702 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3703 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\ 3704 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3705 int len = a->length(); \ 3706 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3707 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3708 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3709 } \ 3710 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3711 FreeHeap(buf); \ 3712 } \ 3713 } \ 3714 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\ 3715 JNI_END 3716 3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int) 3722 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3723 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3724 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3725 3726 #else /* USDT2 */ 3727 3728 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \ 3729 , EntryProbe, ReturnProbe);\ 3730 \ 3731 JNI_QUICK_ENTRY(void, \ 3732 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3733 ElementType *buf, jint mode)) \ 3734 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3735 EntryProbe; \ 3736 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3737 int len = a->length(); \ 3738 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3739 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3740 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3741 } \ 3742 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3743 FreeHeap(buf); \ 3744 } \ 3745 } \ 3746 ReturnProbe; \ 3747 JNI_END 3748 3749 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3750 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3751 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN()) 3752 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3753 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode), 3754 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN()) 3755 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3756 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3757 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN()) 3758 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3759 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3760 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN()) 3761 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int 3762 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode), 3763 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN()) 3764 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3765 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3766 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN()) 3767 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3768 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode), 3769 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN()) 3770 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3771 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode), 3772 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN()) 3773 #endif /* USDT2 */ 3774 3775 #ifndef USDT2 3776 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3777 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\ 3778 \ 3779 JNI_ENTRY(void, \ 3780 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3781 jsize len, ElementType *buf)) \ 3782 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3783 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3784 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3785 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3786 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3787 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3788 } else { \ 3789 if (len > 0) { \ 3790 int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \ 3791 memcpy((u_char*) buf, \ 3792 (u_char*) src->Tag##_at_addr(start), \ 3793 len << sc); \ 3794 } \ 3795 } \ 3796 JNI_END 3797 3798 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool) 3799 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3800 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3801 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3802 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int) 3803 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3804 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3805 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3806 3807 #else /* USDT2 */ 3808 3809 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3810 , EntryProbe, ReturnProbe); \ 3811 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \ 3812 , ReturnProbe); \ 3813 \ 3814 JNI_ENTRY(void, \ 3815 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3816 jsize len, ElementType *buf)) \ 3817 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3818 EntryProbe; \ 3819 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3820 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3821 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3822 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3823 } else { \ 3824 if (len > 0) { \ 3825 int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \ 3826 memcpy((u_char*) buf, \ 3827 (u_char*) src->Tag##_at_addr(start), \ 3828 len << sc); \ 3829 } \ 3830 } \ 3831 JNI_END 3832 3833 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool 3834 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3835 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN()); 3836 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3837 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3838 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN()); 3839 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3840 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3841 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN()); 3842 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3843 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf), 3844 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN()); 3845 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int 3846 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf), 3847 HOTSPOT_JNI_GETINTARRAYREGION_RETURN()); 3848 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long 3849 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3850 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN()); 3851 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3852 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3853 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN()); 3854 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3855 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3856 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN()); 3857 #endif /* USDT2 */ 3858 3859 #ifndef USDT2 3860 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3861 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\ 3862 \ 3863 JNI_ENTRY(void, \ 3864 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3865 jsize len, const ElementType *buf)) \ 3866 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3867 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3868 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3869 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3870 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3871 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3872 } else { \ 3873 if (len > 0) { \ 3874 int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3875 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3876 (u_char*) buf, \ 3877 len << sc); \ 3878 } \ 3879 } \ 3880 JNI_END 3881 3882 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool) 3883 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3884 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3885 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3886 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int) 3887 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3888 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3889 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3890 3891 #else /* USDT2 */ 3892 3893 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3894 , EntryProbe, ReturnProbe); \ 3895 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \ 3896 ,ReturnProbe); \ 3897 \ 3898 JNI_ENTRY(void, \ 3899 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3900 jsize len, const ElementType *buf)) \ 3901 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3902 EntryProbe; \ 3903 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3904 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3905 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3906 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3907 } else { \ 3908 if (len > 0) { \ 3909 int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3910 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3911 (u_char*) buf, \ 3912 len << sc); \ 3913 } \ 3914 } \ 3915 JNI_END 3916 3917 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool 3918 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf), 3919 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN()) 3920 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3921 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3922 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN()) 3923 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3924 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3925 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN()) 3926 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3927 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3928 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN()) 3929 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int 3930 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf), 3931 HOTSPOT_JNI_SETINTARRAYREGION_RETURN()) 3932 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long 3933 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3934 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN()) 3935 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3936 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3937 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN()) 3938 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3939 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3940 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN()) 3941 #endif /* USDT2 */ 3942 3943 3944 // 3945 // Interception of natives 3946 // 3947 3948 // The RegisterNatives call being attempted tried to register with a method that 3949 // is not native. Ask JVM TI what prefixes have been specified. Then check 3950 // to see if the native method is now wrapped with the prefixes. See the 3951 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details. 3952 static Method* find_prefixed_native(KlassHandle k, 3953 Symbol* name, Symbol* signature, TRAPS) { 3954 #if INCLUDE_JVMTI 3955 ResourceMark rm(THREAD); 3956 Method* method; 3957 int name_len = name->utf8_length(); 3958 char* name_str = name->as_utf8(); 3959 int prefix_count; 3960 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); 3961 for (int i = 0; i < prefix_count; i++) { 3962 char* prefix = prefixes[i]; 3963 int prefix_len = (int)strlen(prefix); 3964 3965 // try adding this prefix to the method name and see if it matches another method name 3966 int trial_len = name_len + prefix_len; 3967 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1); 3968 strcpy(trial_name_str, prefix); 3969 strcat(trial_name_str, name_str); 3970 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len); 3971 if (trial_name == NULL) { 3972 continue; // no such symbol, so this prefix wasn't used, try the next prefix 3973 } 3974 method = Klass::cast(k())->lookup_method(trial_name, signature); 3975 if (method == NULL) { 3976 continue; // signature doesn't match, try the next prefix 3977 } 3978 if (method->is_native()) { 3979 method->set_is_prefixed_native(); 3980 return method; // wahoo, we found a prefixed version of the method, return it 3981 } 3982 // found as non-native, so prefix is good, add it, probably just need more prefixes 3983 name_len = trial_len; 3984 name_str = trial_name_str; 3985 } 3986 #endif // INCLUDE_JVMTI 3987 return NULL; // not found 3988 } 3989 3990 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) { 3991 Method* method = Klass::cast(k())->lookup_method(name, signature); 3992 if (method == NULL) { 3993 ResourceMark rm; 3994 stringStream st; 3995 st.print("Method %s name or signature does not match", 3996 Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature)); 3997 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3998 } 3999 if (!method->is_native()) { 4000 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es) 4001 method = find_prefixed_native(k, name, signature, THREAD); 4002 if (method == NULL) { 4003 ResourceMark rm; 4004 stringStream st; 4005 st.print("Method %s is not declared as native", 4006 Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature)); 4007 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 4008 } 4009 } 4010 4011 if (entry != NULL) { 4012 method->set_native_function(entry, 4013 Method::native_bind_event_is_interesting); 4014 } else { 4015 method->clear_native_function(); 4016 } 4017 if (PrintJNIResolving) { 4018 ResourceMark rm(THREAD); 4019 tty->print_cr("[Registering JNI native method %s.%s]", 4020 Klass::cast(method->method_holder())->external_name(), 4021 method->name()->as_C_string()); 4022 } 4023 return true; 4024 } 4025 4026 #ifndef USDT2 4027 DT_RETURN_MARK_DECL(RegisterNatives, jint); 4028 #else /* USDT2 */ 4029 DT_RETURN_MARK_DECL(RegisterNatives, jint 4030 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref)); 4031 #endif /* USDT2 */ 4032 4033 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz, 4034 const JNINativeMethod *methods, 4035 jint nMethods)) 4036 JNIWrapper("RegisterNatives"); 4037 #ifndef USDT2 4038 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods); 4039 #else /* USDT2 */ 4040 HOTSPOT_JNI_REGISTERNATIVES_ENTRY( 4041 env, clazz, (void *) methods, nMethods); 4042 #endif /* USDT2 */ 4043 jint ret = 0; 4044 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret); 4045 4046 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 4047 4048 for (int index = 0; index < nMethods; index++) { 4049 const char* meth_name = methods[index].name; 4050 const char* meth_sig = methods[index].signature; 4051 int meth_name_len = (int)strlen(meth_name); 4052 4053 // The class should have been loaded (we have an instance of the class 4054 // passed in) so the method and signature should already be in the symbol 4055 // table. If they're not there, the method doesn't exist. 4056 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len); 4057 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig)); 4058 4059 if (name == NULL || signature == NULL) { 4060 ResourceMark rm; 4061 stringStream st; 4062 st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig); 4063 // Must return negative value on failure 4064 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1); 4065 } 4066 4067 bool res = register_native(h_k, name, signature, 4068 (address) methods[index].fnPtr, THREAD); 4069 if (!res) { 4070 ret = -1; 4071 break; 4072 } 4073 } 4074 return ret; 4075 JNI_END 4076 4077 4078 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz)) 4079 JNIWrapper("UnregisterNatives"); 4080 #ifndef USDT2 4081 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz); 4082 #else /* USDT2 */ 4083 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY( 4084 env, clazz); 4085 #endif /* USDT2 */ 4086 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 4087 //%note jni_2 4088 if (Klass::cast(k)->oop_is_instance()) { 4089 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) { 4090 Method* m = InstanceKlass::cast(k)->methods()->at(index); 4091 if (m->is_native()) { 4092 m->clear_native_function(); 4093 m->set_signature_handler(NULL); 4094 } 4095 } 4096 } 4097 #ifndef USDT2 4098 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0); 4099 #else /* USDT2 */ 4100 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN( 4101 0); 4102 #endif /* USDT2 */ 4103 return 0; 4104 JNI_END 4105 4106 // 4107 // Monitor functions 4108 // 4109 4110 #ifndef USDT2 4111 DT_RETURN_MARK_DECL(MonitorEnter, jint); 4112 #else /* USDT2 */ 4113 DT_RETURN_MARK_DECL(MonitorEnter, jint 4114 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref)); 4115 #endif /* USDT2 */ 4116 4117 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj)) 4118 #ifndef USDT2 4119 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj); 4120 #else /* USDT2 */ 4121 HOTSPOT_JNI_MONITORENTER_ENTRY( 4122 env, jobj); 4123 #endif /* USDT2 */ 4124 jint ret = JNI_ERR; 4125 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret); 4126 4127 // If the object is null, we can't do anything with it 4128 if (jobj == NULL) { 4129 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4130 } 4131 4132 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); 4133 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR)); 4134 ret = JNI_OK; 4135 return ret; 4136 JNI_END 4137 4138 #ifndef USDT2 4139 DT_RETURN_MARK_DECL(MonitorExit, jint); 4140 #else /* USDT2 */ 4141 DT_RETURN_MARK_DECL(MonitorExit, jint 4142 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref)); 4143 #endif /* USDT2 */ 4144 4145 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj)) 4146 #ifndef USDT2 4147 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj); 4148 #else /* USDT2 */ 4149 HOTSPOT_JNI_MONITOREXIT_ENTRY( 4150 env, jobj); 4151 #endif /* USDT2 */ 4152 jint ret = JNI_ERR; 4153 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret); 4154 4155 // Don't do anything with a null object 4156 if (jobj == NULL) { 4157 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4158 } 4159 4160 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); 4161 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR)); 4162 4163 ret = JNI_OK; 4164 return ret; 4165 JNI_END 4166 4167 // 4168 // Extensions 4169 // 4170 4171 #ifndef USDT2 4172 DT_VOID_RETURN_MARK_DECL(GetStringRegion); 4173 #else /* USDT2 */ 4174 DT_VOID_RETURN_MARK_DECL(GetStringRegion 4175 , HOTSPOT_JNI_GETSTRINGREGION_RETURN()); 4176 #endif /* USDT2 */ 4177 4178 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf)) 4179 JNIWrapper("GetStringRegion"); 4180 #ifndef USDT2 4181 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf); 4182 #else /* USDT2 */ 4183 HOTSPOT_JNI_GETSTRINGREGION_ENTRY( 4184 env, string, start, len, buf); 4185 #endif /* USDT2 */ 4186 DT_VOID_RETURN_MARK(GetStringRegion); 4187 oop s = JNIHandles::resolve_non_null(string); 4188 int s_len = java_lang_String::length(s); 4189 if (start < 0 || len < 0 || start + len > s_len) { 4190 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4191 } else { 4192 if (len > 0) { 4193 int s_offset = java_lang_String::offset(s); 4194 typeArrayOop s_value = java_lang_String::value(s); 4195 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len); 4196 } 4197 } 4198 JNI_END 4199 4200 #ifndef USDT2 4201 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion); 4202 #else /* USDT2 */ 4203 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion 4204 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN()); 4205 #endif /* USDT2 */ 4206 4207 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf)) 4208 JNIWrapper("GetStringUTFRegion"); 4209 #ifndef USDT2 4210 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf); 4211 #else /* USDT2 */ 4212 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY( 4213 env, string, start, len, buf); 4214 #endif /* USDT2 */ 4215 DT_VOID_RETURN_MARK(GetStringUTFRegion); 4216 oop s = JNIHandles::resolve_non_null(string); 4217 int s_len = java_lang_String::length(s); 4218 if (start < 0 || len < 0 || start + len > s_len) { 4219 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4220 } else { 4221 //%note jni_7 4222 if (len > 0) { 4223 ResourceMark rm(THREAD); 4224 char *utf_region = java_lang_String::as_utf8_string(s, start, len); 4225 int utf_len = (int)strlen(utf_region); 4226 memcpy(buf, utf_region, utf_len); 4227 buf[utf_len] = 0; 4228 } else { 4229 // JDK null-terminates the buffer even in len is zero 4230 if (buf != NULL) { 4231 buf[0] = 0; 4232 } 4233 } 4234 } 4235 JNI_END 4236 4237 4238 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)) 4239 JNIWrapper("GetPrimitiveArrayCritical"); 4240 #ifndef USDT2 4241 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy); 4242 #else /* USDT2 */ 4243 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY( 4244 env, array, (uintptr_t *) isCopy); 4245 #endif /* USDT2 */ 4246 GC_locker::lock_critical(thread); 4247 if (isCopy != NULL) { 4248 *isCopy = JNI_FALSE; 4249 } 4250 oop a = JNIHandles::resolve_non_null(array); 4251 assert(a->is_array(), "just checking"); 4252 BasicType type; 4253 if (a->is_objArray()) { 4254 type = T_OBJECT; 4255 } else { 4256 type = typeArrayKlass::cast(a->klass())->element_type(); 4257 } 4258 void* ret = arrayOop(a)->base(type); 4259 #ifndef USDT2 4260 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret); 4261 #else /* USDT2 */ 4262 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN( 4263 ret); 4264 #endif /* USDT2 */ 4265 return ret; 4266 JNI_END 4267 4268 4269 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)) 4270 JNIWrapper("ReleasePrimitiveArrayCritical"); 4271 #ifndef USDT2 4272 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode); 4273 #else /* USDT2 */ 4274 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY( 4275 env, array, carray, mode); 4276 #endif /* USDT2 */ 4277 // The array, carray and mode arguments are ignored 4278 GC_locker::unlock_critical(thread); 4279 #ifndef USDT2 4280 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return); 4281 #else /* USDT2 */ 4282 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN( 4283 ); 4284 #endif /* USDT2 */ 4285 JNI_END 4286 4287 4288 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy)) 4289 JNIWrapper("GetStringCritical"); 4290 #ifndef USDT2 4291 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy); 4292 #else /* USDT2 */ 4293 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY( 4294 env, string, (uintptr_t *) isCopy); 4295 #endif /* USDT2 */ 4296 GC_locker::lock_critical(thread); 4297 if (isCopy != NULL) { 4298 *isCopy = JNI_FALSE; 4299 } 4300 oop s = JNIHandles::resolve_non_null(string); 4301 int s_len = java_lang_String::length(s); 4302 typeArrayOop s_value = java_lang_String::value(s); 4303 int s_offset = java_lang_String::offset(s); 4304 const jchar* ret; 4305 if (s_len > 0) { 4306 ret = s_value->char_at_addr(s_offset); 4307 } else { 4308 ret = (jchar*) s_value->base(T_CHAR); 4309 } 4310 #ifndef USDT2 4311 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret); 4312 #else /* USDT2 */ 4313 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN( 4314 (uint16_t *) ret); 4315 #endif /* USDT2 */ 4316 return ret; 4317 JNI_END 4318 4319 4320 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars)) 4321 JNIWrapper("ReleaseStringCritical"); 4322 #ifndef USDT2 4323 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars); 4324 #else /* USDT2 */ 4325 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY( 4326 env, str, (uint16_t *) chars); 4327 #endif /* USDT2 */ 4328 // The str and chars arguments are ignored 4329 GC_locker::unlock_critical(thread); 4330 #ifndef USDT2 4331 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return); 4332 #else /* USDT2 */ 4333 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN( 4334 ); 4335 #endif /* USDT2 */ 4336 JNI_END 4337 4338 4339 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref)) 4340 JNIWrapper("jni_NewWeakGlobalRef"); 4341 #ifndef USDT2 4342 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref); 4343 #else /* USDT2 */ 4344 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY( 4345 env, ref); 4346 #endif /* USDT2 */ 4347 Handle ref_handle(thread, JNIHandles::resolve(ref)); 4348 jweak ret = JNIHandles::make_weak_global(ref_handle); 4349 #ifndef USDT2 4350 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret); 4351 #else /* USDT2 */ 4352 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN( 4353 ret); 4354 #endif /* USDT2 */ 4355 return ret; 4356 JNI_END 4357 4358 // Must be JNI_ENTRY (with HandleMark) 4359 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref)) 4360 JNIWrapper("jni_DeleteWeakGlobalRef"); 4361 #ifndef USDT2 4362 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref); 4363 #else /* USDT2 */ 4364 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY( 4365 env, ref); 4366 #endif /* USDT2 */ 4367 JNIHandles::destroy_weak_global(ref); 4368 #ifndef USDT2 4369 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return); 4370 #else /* USDT2 */ 4371 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN( 4372 ); 4373 #endif /* USDT2 */ 4374 JNI_END 4375 4376 4377 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env)) 4378 JNIWrapper("jni_ExceptionCheck"); 4379 #ifndef USDT2 4380 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env); 4381 #else /* USDT2 */ 4382 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY( 4383 env); 4384 #endif /* USDT2 */ 4385 jni_check_async_exceptions(thread); 4386 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE; 4387 #ifndef USDT2 4388 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret); 4389 #else /* USDT2 */ 4390 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN( 4391 ret); 4392 #endif /* USDT2 */ 4393 return ret; 4394 JNI_END 4395 4396 4397 // Initialization state for three routines below relating to 4398 // java.nio.DirectBuffers 4399 static jint directBufferSupportInitializeStarted = 0; 4400 static volatile jint directBufferSupportInitializeEnded = 0; 4401 static volatile jint directBufferSupportInitializeFailed = 0; 4402 static jclass bufferClass = NULL; 4403 static jclass directBufferClass = NULL; 4404 static jclass directByteBufferClass = NULL; 4405 static jmethodID directByteBufferConstructor = NULL; 4406 static jfieldID directBufferAddressField = NULL; 4407 static jfieldID bufferCapacityField = NULL; 4408 4409 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) { 4410 Handle loader; // null (bootstrap) loader 4411 Handle protection_domain; // null protection domain 4412 4413 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 4414 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL); 4415 4416 if (TraceClassResolution && result != NULL) { 4417 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 4418 } 4419 return result; 4420 } 4421 4422 // These lookups are done with the NULL (bootstrap) ClassLoader to 4423 // circumvent any security checks that would be done by jni_FindClass. 4424 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env)) 4425 { 4426 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; } 4427 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; } 4428 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; } 4429 return true; 4430 } 4431 JNI_END 4432 4433 4434 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) { 4435 if (directBufferSupportInitializeFailed) { 4436 return false; 4437 } 4438 4439 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) { 4440 if (!lookupDirectBufferClasses(env)) { 4441 directBufferSupportInitializeFailed = 1; 4442 return false; 4443 } 4444 4445 // Make global references for these 4446 bufferClass = (jclass) env->NewGlobalRef(bufferClass); 4447 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass); 4448 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass); 4449 4450 // Get needed field and method IDs 4451 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V"); 4452 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J"); 4453 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I"); 4454 4455 if ((directByteBufferConstructor == NULL) || 4456 (directBufferAddressField == NULL) || 4457 (bufferCapacityField == NULL)) { 4458 directBufferSupportInitializeFailed = 1; 4459 return false; 4460 } 4461 4462 directBufferSupportInitializeEnded = 1; 4463 } else { 4464 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) { 4465 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls 4466 // os::sleep which requires the VM state transition. On other platforms, it 4467 // is not necessary. The following call to change the VM state is purposely 4468 // put inside the loop to avoid potential deadlock when multiple threads 4469 // try to call this method. See 6791815 for more details. 4470 ThreadInVMfromNative tivn(thread); 4471 os::yield_all(); 4472 } 4473 } 4474 4475 return !directBufferSupportInitializeFailed; 4476 } 4477 4478 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity) 4479 { 4480 // thread_from_jni_environment() will block if VM is gone. 4481 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4482 4483 JNIWrapper("jni_NewDirectByteBuffer"); 4484 #ifndef USDT2 4485 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity); 4486 #else /* USDT2 */ 4487 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY( 4488 env, address, capacity); 4489 #endif /* USDT2 */ 4490 4491 if (!directBufferSupportInitializeEnded) { 4492 if (!initializeDirectBufferSupport(env, thread)) { 4493 #ifndef USDT2 4494 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL); 4495 #else /* USDT2 */ 4496 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4497 NULL); 4498 #endif /* USDT2 */ 4499 return NULL; 4500 } 4501 } 4502 4503 // Being paranoid about accidental sign extension on address 4504 jlong addr = (jlong) ((uintptr_t) address); 4505 // NOTE that package-private DirectByteBuffer constructor currently 4506 // takes int capacity 4507 jint cap = (jint) capacity; 4508 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap); 4509 #ifndef USDT2 4510 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret); 4511 #else /* USDT2 */ 4512 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4513 ret); 4514 #endif /* USDT2 */ 4515 return ret; 4516 } 4517 4518 #ifndef USDT2 4519 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*); 4520 #else /* USDT2 */ 4521 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void* 4522 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref)); 4523 #endif /* USDT2 */ 4524 4525 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf) 4526 { 4527 // thread_from_jni_environment() will block if VM is gone. 4528 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4529 4530 JNIWrapper("jni_GetDirectBufferAddress"); 4531 #ifndef USDT2 4532 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf); 4533 #else /* USDT2 */ 4534 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY( 4535 env, buf); 4536 #endif /* USDT2 */ 4537 void* ret = NULL; 4538 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret); 4539 4540 if (!directBufferSupportInitializeEnded) { 4541 if (!initializeDirectBufferSupport(env, thread)) { 4542 return 0; 4543 } 4544 } 4545 4546 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) { 4547 return 0; 4548 } 4549 4550 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField); 4551 return ret; 4552 } 4553 4554 #ifndef USDT2 4555 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong); 4556 #else /* USDT2 */ 4557 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong 4558 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref)); 4559 #endif /* USDT2 */ 4560 4561 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf) 4562 { 4563 // thread_from_jni_environment() will block if VM is gone. 4564 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4565 4566 JNIWrapper("jni_GetDirectBufferCapacity"); 4567 #ifndef USDT2 4568 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf); 4569 #else /* USDT2 */ 4570 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY( 4571 env, buf); 4572 #endif /* USDT2 */ 4573 jlong ret = -1; 4574 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret); 4575 4576 if (!directBufferSupportInitializeEnded) { 4577 if (!initializeDirectBufferSupport(env, thread)) { 4578 ret = 0; 4579 return ret; 4580 } 4581 } 4582 4583 if (buf == NULL) { 4584 return -1; 4585 } 4586 4587 if (!env->IsInstanceOf(buf, directBufferClass)) { 4588 return -1; 4589 } 4590 4591 // NOTE that capacity is currently an int in the implementation 4592 ret = env->GetIntField(buf, bufferCapacityField); 4593 return ret; 4594 } 4595 4596 4597 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env)) 4598 JNIWrapper("GetVersion"); 4599 #ifndef USDT2 4600 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env); 4601 #else /* USDT2 */ 4602 HOTSPOT_JNI_GETVERSION_ENTRY( 4603 env); 4604 #endif /* USDT2 */ 4605 #ifndef USDT2 4606 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion); 4607 #else /* USDT2 */ 4608 HOTSPOT_JNI_GETVERSION_RETURN( 4609 CurrentVersion); 4610 #endif /* USDT2 */ 4611 return CurrentVersion; 4612 JNI_END 4613 4614 extern struct JavaVM_ main_vm; 4615 4616 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm)) 4617 JNIWrapper("jni_GetJavaVM"); 4618 #ifndef USDT2 4619 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm); 4620 #else /* USDT2 */ 4621 HOTSPOT_JNI_GETJAVAVM_ENTRY( 4622 env, (void **) vm); 4623 #endif /* USDT2 */ 4624 *vm = (JavaVM *)(&main_vm); 4625 #ifndef USDT2 4626 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK); 4627 #else /* USDT2 */ 4628 HOTSPOT_JNI_GETJAVAVM_RETURN( 4629 JNI_OK); 4630 #endif /* USDT2 */ 4631 return JNI_OK; 4632 JNI_END 4633 4634 // Structure containing all jni functions 4635 struct JNINativeInterface_ jni_NativeInterface = { 4636 NULL, 4637 NULL, 4638 NULL, 4639 4640 NULL, 4641 4642 jni_GetVersion, 4643 4644 jni_DefineClass, 4645 jni_FindClass, 4646 4647 jni_FromReflectedMethod, 4648 jni_FromReflectedField, 4649 4650 jni_ToReflectedMethod, 4651 4652 jni_GetSuperclass, 4653 jni_IsAssignableFrom, 4654 4655 jni_ToReflectedField, 4656 4657 jni_Throw, 4658 jni_ThrowNew, 4659 jni_ExceptionOccurred, 4660 jni_ExceptionDescribe, 4661 jni_ExceptionClear, 4662 jni_FatalError, 4663 4664 jni_PushLocalFrame, 4665 jni_PopLocalFrame, 4666 4667 jni_NewGlobalRef, 4668 jni_DeleteGlobalRef, 4669 jni_DeleteLocalRef, 4670 jni_IsSameObject, 4671 4672 jni_NewLocalRef, 4673 jni_EnsureLocalCapacity, 4674 4675 jni_AllocObject, 4676 jni_NewObject, 4677 jni_NewObjectV, 4678 jni_NewObjectA, 4679 4680 jni_GetObjectClass, 4681 jni_IsInstanceOf, 4682 4683 jni_GetMethodID, 4684 4685 jni_CallObjectMethod, 4686 jni_CallObjectMethodV, 4687 jni_CallObjectMethodA, 4688 jni_CallBooleanMethod, 4689 jni_CallBooleanMethodV, 4690 jni_CallBooleanMethodA, 4691 jni_CallByteMethod, 4692 jni_CallByteMethodV, 4693 jni_CallByteMethodA, 4694 jni_CallCharMethod, 4695 jni_CallCharMethodV, 4696 jni_CallCharMethodA, 4697 jni_CallShortMethod, 4698 jni_CallShortMethodV, 4699 jni_CallShortMethodA, 4700 jni_CallIntMethod, 4701 jni_CallIntMethodV, 4702 jni_CallIntMethodA, 4703 jni_CallLongMethod, 4704 jni_CallLongMethodV, 4705 jni_CallLongMethodA, 4706 jni_CallFloatMethod, 4707 jni_CallFloatMethodV, 4708 jni_CallFloatMethodA, 4709 jni_CallDoubleMethod, 4710 jni_CallDoubleMethodV, 4711 jni_CallDoubleMethodA, 4712 jni_CallVoidMethod, 4713 jni_CallVoidMethodV, 4714 jni_CallVoidMethodA, 4715 4716 jni_CallNonvirtualObjectMethod, 4717 jni_CallNonvirtualObjectMethodV, 4718 jni_CallNonvirtualObjectMethodA, 4719 jni_CallNonvirtualBooleanMethod, 4720 jni_CallNonvirtualBooleanMethodV, 4721 jni_CallNonvirtualBooleanMethodA, 4722 jni_CallNonvirtualByteMethod, 4723 jni_CallNonvirtualByteMethodV, 4724 jni_CallNonvirtualByteMethodA, 4725 jni_CallNonvirtualCharMethod, 4726 jni_CallNonvirtualCharMethodV, 4727 jni_CallNonvirtualCharMethodA, 4728 jni_CallNonvirtualShortMethod, 4729 jni_CallNonvirtualShortMethodV, 4730 jni_CallNonvirtualShortMethodA, 4731 jni_CallNonvirtualIntMethod, 4732 jni_CallNonvirtualIntMethodV, 4733 jni_CallNonvirtualIntMethodA, 4734 jni_CallNonvirtualLongMethod, 4735 jni_CallNonvirtualLongMethodV, 4736 jni_CallNonvirtualLongMethodA, 4737 jni_CallNonvirtualFloatMethod, 4738 jni_CallNonvirtualFloatMethodV, 4739 jni_CallNonvirtualFloatMethodA, 4740 jni_CallNonvirtualDoubleMethod, 4741 jni_CallNonvirtualDoubleMethodV, 4742 jni_CallNonvirtualDoubleMethodA, 4743 jni_CallNonvirtualVoidMethod, 4744 jni_CallNonvirtualVoidMethodV, 4745 jni_CallNonvirtualVoidMethodA, 4746 4747 jni_GetFieldID, 4748 4749 jni_GetObjectField, 4750 jni_GetBooleanField, 4751 jni_GetByteField, 4752 jni_GetCharField, 4753 jni_GetShortField, 4754 jni_GetIntField, 4755 jni_GetLongField, 4756 jni_GetFloatField, 4757 jni_GetDoubleField, 4758 4759 jni_SetObjectField, 4760 jni_SetBooleanField, 4761 jni_SetByteField, 4762 jni_SetCharField, 4763 jni_SetShortField, 4764 jni_SetIntField, 4765 jni_SetLongField, 4766 jni_SetFloatField, 4767 jni_SetDoubleField, 4768 4769 jni_GetStaticMethodID, 4770 4771 jni_CallStaticObjectMethod, 4772 jni_CallStaticObjectMethodV, 4773 jni_CallStaticObjectMethodA, 4774 jni_CallStaticBooleanMethod, 4775 jni_CallStaticBooleanMethodV, 4776 jni_CallStaticBooleanMethodA, 4777 jni_CallStaticByteMethod, 4778 jni_CallStaticByteMethodV, 4779 jni_CallStaticByteMethodA, 4780 jni_CallStaticCharMethod, 4781 jni_CallStaticCharMethodV, 4782 jni_CallStaticCharMethodA, 4783 jni_CallStaticShortMethod, 4784 jni_CallStaticShortMethodV, 4785 jni_CallStaticShortMethodA, 4786 jni_CallStaticIntMethod, 4787 jni_CallStaticIntMethodV, 4788 jni_CallStaticIntMethodA, 4789 jni_CallStaticLongMethod, 4790 jni_CallStaticLongMethodV, 4791 jni_CallStaticLongMethodA, 4792 jni_CallStaticFloatMethod, 4793 jni_CallStaticFloatMethodV, 4794 jni_CallStaticFloatMethodA, 4795 jni_CallStaticDoubleMethod, 4796 jni_CallStaticDoubleMethodV, 4797 jni_CallStaticDoubleMethodA, 4798 jni_CallStaticVoidMethod, 4799 jni_CallStaticVoidMethodV, 4800 jni_CallStaticVoidMethodA, 4801 4802 jni_GetStaticFieldID, 4803 4804 jni_GetStaticObjectField, 4805 jni_GetStaticBooleanField, 4806 jni_GetStaticByteField, 4807 jni_GetStaticCharField, 4808 jni_GetStaticShortField, 4809 jni_GetStaticIntField, 4810 jni_GetStaticLongField, 4811 jni_GetStaticFloatField, 4812 jni_GetStaticDoubleField, 4813 4814 jni_SetStaticObjectField, 4815 jni_SetStaticBooleanField, 4816 jni_SetStaticByteField, 4817 jni_SetStaticCharField, 4818 jni_SetStaticShortField, 4819 jni_SetStaticIntField, 4820 jni_SetStaticLongField, 4821 jni_SetStaticFloatField, 4822 jni_SetStaticDoubleField, 4823 4824 jni_NewString, 4825 jni_GetStringLength, 4826 jni_GetStringChars, 4827 jni_ReleaseStringChars, 4828 4829 jni_NewStringUTF, 4830 jni_GetStringUTFLength, 4831 jni_GetStringUTFChars, 4832 jni_ReleaseStringUTFChars, 4833 4834 jni_GetArrayLength, 4835 4836 jni_NewObjectArray, 4837 jni_GetObjectArrayElement, 4838 jni_SetObjectArrayElement, 4839 4840 jni_NewBooleanArray, 4841 jni_NewByteArray, 4842 jni_NewCharArray, 4843 jni_NewShortArray, 4844 jni_NewIntArray, 4845 jni_NewLongArray, 4846 jni_NewFloatArray, 4847 jni_NewDoubleArray, 4848 4849 jni_GetBooleanArrayElements, 4850 jni_GetByteArrayElements, 4851 jni_GetCharArrayElements, 4852 jni_GetShortArrayElements, 4853 jni_GetIntArrayElements, 4854 jni_GetLongArrayElements, 4855 jni_GetFloatArrayElements, 4856 jni_GetDoubleArrayElements, 4857 4858 jni_ReleaseBooleanArrayElements, 4859 jni_ReleaseByteArrayElements, 4860 jni_ReleaseCharArrayElements, 4861 jni_ReleaseShortArrayElements, 4862 jni_ReleaseIntArrayElements, 4863 jni_ReleaseLongArrayElements, 4864 jni_ReleaseFloatArrayElements, 4865 jni_ReleaseDoubleArrayElements, 4866 4867 jni_GetBooleanArrayRegion, 4868 jni_GetByteArrayRegion, 4869 jni_GetCharArrayRegion, 4870 jni_GetShortArrayRegion, 4871 jni_GetIntArrayRegion, 4872 jni_GetLongArrayRegion, 4873 jni_GetFloatArrayRegion, 4874 jni_GetDoubleArrayRegion, 4875 4876 jni_SetBooleanArrayRegion, 4877 jni_SetByteArrayRegion, 4878 jni_SetCharArrayRegion, 4879 jni_SetShortArrayRegion, 4880 jni_SetIntArrayRegion, 4881 jni_SetLongArrayRegion, 4882 jni_SetFloatArrayRegion, 4883 jni_SetDoubleArrayRegion, 4884 4885 jni_RegisterNatives, 4886 jni_UnregisterNatives, 4887 4888 jni_MonitorEnter, 4889 jni_MonitorExit, 4890 4891 jni_GetJavaVM, 4892 4893 jni_GetStringRegion, 4894 jni_GetStringUTFRegion, 4895 4896 jni_GetPrimitiveArrayCritical, 4897 jni_ReleasePrimitiveArrayCritical, 4898 4899 jni_GetStringCritical, 4900 jni_ReleaseStringCritical, 4901 4902 jni_NewWeakGlobalRef, 4903 jni_DeleteWeakGlobalRef, 4904 4905 jni_ExceptionCheck, 4906 4907 jni_NewDirectByteBuffer, 4908 jni_GetDirectBufferAddress, 4909 jni_GetDirectBufferCapacity, 4910 4911 // New 1_6 features 4912 4913 jni_GetObjectRefType 4914 }; 4915 4916 4917 // For jvmti use to modify jni function table. 4918 // Java threads in native contiues to run until it is transitioned 4919 // to VM at safepoint. Before the transition or before it is blocked 4920 // for safepoint it may access jni function table. VM could crash if 4921 // any java thread access the jni function table in the middle of memcpy. 4922 // To avoid this each function pointers are copied automically. 4923 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) { 4924 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); 4925 intptr_t *a = (intptr_t *) jni_functions(); 4926 intptr_t *b = (intptr_t *) new_jni_NativeInterface; 4927 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) { 4928 Atomic::store_ptr(*b++, a++); 4929 } 4930 } 4931 4932 void quicken_jni_functions() { 4933 // Replace Get<Primitive>Field with fast versions 4934 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access() 4935 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls 4936 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2) 4937 // windows x86 currently needs SEH wrapper and the gain of the fast 4938 // versions currently isn't certain for server vm on uniprocessor. 4939 && os::is_MP() 4940 #endif 4941 ) { 4942 address func; 4943 func = JNI_FastGetField::generate_fast_get_boolean_field(); 4944 if (func != (address)-1) { 4945 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func; 4946 } 4947 func = JNI_FastGetField::generate_fast_get_byte_field(); 4948 if (func != (address)-1) { 4949 jni_NativeInterface.GetByteField = (GetByteField_t)func; 4950 } 4951 func = JNI_FastGetField::generate_fast_get_char_field(); 4952 if (func != (address)-1) { 4953 jni_NativeInterface.GetCharField = (GetCharField_t)func; 4954 } 4955 func = JNI_FastGetField::generate_fast_get_short_field(); 4956 if (func != (address)-1) { 4957 jni_NativeInterface.GetShortField = (GetShortField_t)func; 4958 } 4959 func = JNI_FastGetField::generate_fast_get_int_field(); 4960 if (func != (address)-1) { 4961 jni_NativeInterface.GetIntField = (GetIntField_t)func; 4962 } 4963 func = JNI_FastGetField::generate_fast_get_long_field(); 4964 if (func != (address)-1) { 4965 jni_NativeInterface.GetLongField = (GetLongField_t)func; 4966 } 4967 func = JNI_FastGetField::generate_fast_get_float_field(); 4968 if (func != (address)-1) { 4969 jni_NativeInterface.GetFloatField = (GetFloatField_t)func; 4970 } 4971 func = JNI_FastGetField::generate_fast_get_double_field(); 4972 if (func != (address)-1) { 4973 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func; 4974 } 4975 } 4976 } 4977 4978 // Returns the function structure 4979 struct JNINativeInterface_* jni_functions() { 4980 #if INCLUDE_JNI_CHECK 4981 if (CheckJNICalls) return jni_functions_check(); 4982 #endif // INCLUDE_JNI_CHECK 4983 return &jni_NativeInterface; 4984 } 4985 4986 // Returns the function structure 4987 struct JNINativeInterface_* jni_functions_nocheck() { 4988 return &jni_NativeInterface; 4989 } 4990 4991 4992 // Invocation API 4993 4994 4995 // Forward declaration 4996 extern const struct JNIInvokeInterface_ jni_InvokeInterface; 4997 4998 // Global invocation API vars 4999 volatile jint vm_created = 0; 5000 // Indicate whether it is safe to recreate VM 5001 volatile jint safe_to_recreate_vm = 1; 5002 struct JavaVM_ main_vm = {&jni_InvokeInterface}; 5003 5004 5005 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */ 5006 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL }; 5007 5008 #ifndef USDT2 5009 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*); 5010 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint); 5011 #else /* USDT2 */ 5012 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint 5013 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref)); 5014 #endif /* USDT2 */ 5015 5016 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) { 5017 #ifndef USDT2 5018 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_); 5019 #else /* USDT2 */ 5020 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY( 5021 args_); 5022 #endif /* USDT2 */ 5023 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_; 5024 jint ret = JNI_ERR; 5025 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret); 5026 5027 if (Threads::is_supported_jni_version(args->version)) { 5028 ret = JNI_OK; 5029 } 5030 // 1.1 style no longer supported in hotspot. 5031 // According the JNI spec, we should update args->version on return. 5032 // We also use the structure to communicate with launcher about default 5033 // stack size. 5034 if (args->version == JNI_VERSION_1_1) { 5035 args->version = JNI_VERSION_1_2; 5036 // javaStackSize is int in arguments structure 5037 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow"); 5038 args->javaStackSize = (jint)(ThreadStackSize * K); 5039 } 5040 return ret; 5041 } 5042 5043 #ifndef PRODUCT 5044 5045 #include "gc_interface/collectedHeap.hpp" 5046 #include "utilities/quickSort.hpp" 5047 5048 #define run_unit_test(unit_test_function_call) \ 5049 tty->print_cr("Running test: " #unit_test_function_call); \ 5050 unit_test_function_call 5051 5052 void execute_internal_vm_tests() { 5053 if (ExecuteInternalVMTests) { 5054 tty->print_cr("Running internal VM tests"); 5055 run_unit_test(arrayOopDesc::test_max_array_length()); 5056 run_unit_test(CollectedHeap::test_is_in()); 5057 run_unit_test(QuickSort::test_quick_sort()); 5058 run_unit_test(AltHashing::test_alt_hash()); 5059 tty->print_cr("All internal VM tests passed"); 5060 } 5061 } 5062 5063 #undef run_unit_test 5064 5065 #endif 5066 5067 #ifndef USDT2 5068 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5069 DT_RETURN_MARK_DECL(CreateJavaVM, jint); 5070 #else /* USDT2 */ 5071 DT_RETURN_MARK_DECL(CreateJavaVM, jint 5072 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref)); 5073 #endif /* USDT2 */ 5074 5075 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) { 5076 #ifndef USDT2 5077 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5078 #else /* USDT2 */ 5079 HOTSPOT_JNI_CREATEJAVAVM_ENTRY( 5080 (void **) vm, penv, args); 5081 #endif /* USDT2 */ 5082 5083 jint result = JNI_ERR; 5084 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result); 5085 5086 // We're about to use Atomic::xchg for synchronization. Some Zero 5087 // platforms use the GCC builtin __sync_lock_test_and_set for this, 5088 // but __sync_lock_test_and_set is not guaranteed to do what we want 5089 // on all architectures. So we check it works before relying on it. 5090 #if defined(ZERO) && defined(ASSERT) 5091 { 5092 jint a = 0xcafebabe; 5093 jint b = Atomic::xchg(0xdeadbeef, &a); 5094 void *c = &a; 5095 void *d = Atomic::xchg_ptr(&b, &c); 5096 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works"); 5097 assert(c == &b && d == &a, "Atomic::xchg_ptr() works"); 5098 } 5099 #endif // ZERO && ASSERT 5100 5101 // At the moment it's only possible to have one Java VM, 5102 // since some of the runtime state is in global variables. 5103 5104 // We cannot use our mutex locks here, since they only work on 5105 // Threads. We do an atomic compare and exchange to ensure only 5106 // one thread can call this method at a time 5107 5108 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms 5109 // the add/dec implementations are dependent on whether we are running 5110 // on a multiprocessor, and at this stage of initialization the os::is_MP 5111 // function used to determine this will always return false. Atomic::xchg 5112 // does not have this problem. 5113 if (Atomic::xchg(1, &vm_created) == 1) { 5114 return JNI_ERR; // already created, or create attempt in progress 5115 } 5116 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) { 5117 return JNI_ERR; // someone tried and failed and retry not allowed. 5118 } 5119 5120 assert(vm_created == 1, "vm_created is true during the creation"); 5121 5122 /** 5123 * Certain errors during initialization are recoverable and do not 5124 * prevent this method from being called again at a later time 5125 * (perhaps with different arguments). However, at a certain 5126 * point during initialization if an error occurs we cannot allow 5127 * this function to be called again (or it will crash). In those 5128 * situations, the 'canTryAgain' flag is set to false, which atomically 5129 * sets safe_to_recreate_vm to 1, such that any new call to 5130 * JNI_CreateJavaVM will immediately fail using the above logic. 5131 */ 5132 bool can_try_again = true; 5133 5134 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again); 5135 if (result == JNI_OK) { 5136 JavaThread *thread = JavaThread::current(); 5137 /* thread is thread_in_vm here */ 5138 *vm = (JavaVM *)(&main_vm); 5139 *(JNIEnv**)penv = thread->jni_environment(); 5140 5141 // Tracks the time application was running before GC 5142 RuntimeService::record_application_start(); 5143 5144 // Notify JVMTI 5145 if (JvmtiExport::should_post_thread_life()) { 5146 JvmtiExport::post_thread_start(thread); 5147 } 5148 5149 EVENT_BEGIN(TraceEventThreadStart, event); 5150 EVENT_COMMIT(event, 5151 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj()))); 5152 5153 // Check if we should compile all classes on bootclasspath 5154 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();) 5155 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. 5156 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5157 } else { 5158 if (can_try_again) { 5159 // reset safe_to_recreate_vm to 1 so that retrial would be possible 5160 safe_to_recreate_vm = 1; 5161 } 5162 5163 // Creation failed. We must reset vm_created 5164 *vm = 0; 5165 *(JNIEnv**)penv = 0; 5166 // reset vm_created last to avoid race condition. Use OrderAccess to 5167 // control both compiler and architectural-based reordering. 5168 OrderAccess::release_store(&vm_created, 0); 5169 } 5170 5171 NOT_PRODUCT(test_error_handler(ErrorHandlerTest)); 5172 NOT_PRODUCT(execute_internal_vm_tests()); 5173 return result; 5174 } 5175 5176 #ifndef USDT2 5177 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5178 JavaVM**, jsize, jsize*); 5179 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); 5180 #endif /* !USDT2 */ 5181 5182 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { 5183 // See bug 4367188, the wrapper can sometimes cause VM crashes 5184 // JNIWrapper("GetCreatedJavaVMs"); 5185 #ifndef USDT2 5186 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5187 vm_buf, bufLen, numVMs); 5188 #else /* USDT2 */ 5189 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY( 5190 (void **) vm_buf, bufLen, (uintptr_t *) numVMs); 5191 #endif /* USDT2 */ 5192 if (vm_created) { 5193 if (numVMs != NULL) *numVMs = 1; 5194 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); 5195 } else { 5196 if (numVMs != NULL) *numVMs = 0; 5197 } 5198 #ifndef USDT2 5199 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); 5200 #else /* USDT2 */ 5201 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN( 5202 JNI_OK); 5203 #endif /* USDT2 */ 5204 return JNI_OK; 5205 } 5206 5207 extern "C" { 5208 5209 #ifndef USDT2 5210 DT_RETURN_MARK_DECL(DestroyJavaVM, jint); 5211 #else /* USDT2 */ 5212 DT_RETURN_MARK_DECL(DestroyJavaVM, jint 5213 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref)); 5214 #endif /* USDT2 */ 5215 5216 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { 5217 #ifndef USDT2 5218 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); 5219 #else /* USDT2 */ 5220 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY( 5221 vm); 5222 #endif /* USDT2 */ 5223 jint res = JNI_ERR; 5224 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); 5225 5226 if (!vm_created) { 5227 res = JNI_ERR; 5228 return res; 5229 } 5230 5231 JNIWrapper("DestroyJavaVM"); 5232 JNIEnv *env; 5233 JavaVMAttachArgs destroyargs; 5234 destroyargs.version = CurrentVersion; 5235 destroyargs.name = (char *)"DestroyJavaVM"; 5236 destroyargs.group = NULL; 5237 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); 5238 if (res != JNI_OK) { 5239 return res; 5240 } 5241 5242 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. 5243 JavaThread* thread = JavaThread::current(); 5244 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5245 if (Threads::destroy_vm()) { 5246 // Should not change thread state, VM is gone 5247 vm_created = false; 5248 res = JNI_OK; 5249 return res; 5250 } else { 5251 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5252 res = JNI_ERR; 5253 return res; 5254 } 5255 } 5256 5257 5258 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { 5259 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; 5260 5261 // Check below commented out from JDK1.2fcs as well 5262 /* 5263 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { 5264 return JNI_EVERSION; 5265 } 5266 */ 5267 5268 Thread* t = ThreadLocalStorage::get_thread_slow(); 5269 if (t != NULL) { 5270 // If the thread has been attached this operation is a no-op 5271 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); 5272 return JNI_OK; 5273 } 5274 5275 // Create a thread and mark it as attaching so it will be skipped by the 5276 // ThreadsListEnumerator - see CR 6404306 5277 JavaThread* thread = new JavaThread(true); 5278 5279 // Set correct safepoint info. The thread is going to call into Java when 5280 // initializing the Java level thread object. Hence, the correct state must 5281 // be set in order for the Safepoint code to deal with it correctly. 5282 thread->set_thread_state(_thread_in_vm); 5283 // Must do this before initialize_thread_local_storage 5284 thread->record_stack_base_and_size(); 5285 5286 thread->initialize_thread_local_storage(); 5287 5288 if (!os::create_attached_thread(thread)) { 5289 delete thread; 5290 return JNI_ERR; 5291 } 5292 // Enable stack overflow checks 5293 thread->create_stack_guard_pages(); 5294 5295 thread->initialize_tlab(); 5296 5297 thread->cache_global_variables(); 5298 5299 // Crucial that we do not have a safepoint check for this thread, since it has 5300 // not been added to the Thread list yet. 5301 { Threads_lock->lock_without_safepoint_check(); 5302 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to 5303 // avoid this thread trying to do a GC before it is added to the thread-list 5304 thread->set_active_handles(JNIHandleBlock::allocate_block()); 5305 Threads::add(thread, daemon); 5306 Threads_lock->unlock(); 5307 } 5308 // Create thread group and name info from attach arguments 5309 oop group = NULL; 5310 char* thread_name = NULL; 5311 if (args != NULL && Threads::is_supported_jni_version(args->version)) { 5312 group = JNIHandles::resolve(args->group); 5313 thread_name = args->name; // may be NULL 5314 } 5315 if (group == NULL) group = Universe::main_thread_group(); 5316 5317 // Create Java level thread object and attach it to this thread 5318 bool attach_failed = false; 5319 { 5320 EXCEPTION_MARK; 5321 HandleMark hm(THREAD); 5322 Handle thread_group(THREAD, group); 5323 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); 5324 if (HAS_PENDING_EXCEPTION) { 5325 CLEAR_PENDING_EXCEPTION; 5326 // cleanup outside the handle mark. 5327 attach_failed = true; 5328 } 5329 } 5330 5331 if (attach_failed) { 5332 // Added missing cleanup 5333 thread->cleanup_failed_attach_current_thread(); 5334 return JNI_ERR; 5335 } 5336 5337 // mark the thread as no longer attaching 5338 // this uses a fence to push the change through so we don't have 5339 // to regrab the threads_lock 5340 thread->set_done_attaching_via_jni(); 5341 5342 // Set java thread status. 5343 java_lang_Thread::set_thread_status(thread->threadObj(), 5344 java_lang_Thread::RUNNABLE); 5345 5346 // Notify the debugger 5347 if (JvmtiExport::should_post_thread_life()) { 5348 JvmtiExport::post_thread_start(thread); 5349 } 5350 5351 EVENT_BEGIN(TraceEventThreadStart, event); 5352 EVENT_COMMIT(event, 5353 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj()))); 5354 5355 *(JNIEnv**)penv = thread->jni_environment(); 5356 5357 // Now leaving the VM, so change thread_state. This is normally automatically taken care 5358 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by 5359 // using ThreadStateTransition::transition, we do a callback to the safepoint code if 5360 // needed. 5361 5362 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5363 5364 // Perform any platform dependent FPU setup 5365 os::setup_fpu(); 5366 5367 return JNI_OK; 5368 } 5369 5370 5371 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { 5372 #ifndef USDT2 5373 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); 5374 #else /* USDT2 */ 5375 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY( 5376 vm, penv, _args); 5377 #endif /* USDT2 */ 5378 if (!vm_created) { 5379 #ifndef USDT2 5380 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); 5381 #else /* USDT2 */ 5382 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5383 (uint32_t) JNI_ERR); 5384 #endif /* USDT2 */ 5385 return JNI_ERR; 5386 } 5387 5388 JNIWrapper("AttachCurrentThread"); 5389 jint ret = attach_current_thread(vm, penv, _args, false); 5390 #ifndef USDT2 5391 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); 5392 #else /* USDT2 */ 5393 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5394 ret); 5395 #endif /* USDT2 */ 5396 return ret; 5397 } 5398 5399 5400 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { 5401 #ifndef USDT2 5402 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); 5403 #else /* USDT2 */ 5404 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY( 5405 vm); 5406 #endif /* USDT2 */ 5407 VM_Exit::block_if_vm_exited(); 5408 5409 JNIWrapper("DetachCurrentThread"); 5410 5411 // If the thread has been deattacted the operations is a no-op 5412 if (ThreadLocalStorage::thread() == NULL) { 5413 #ifndef USDT2 5414 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5415 #else /* USDT2 */ 5416 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5417 JNI_OK); 5418 #endif /* USDT2 */ 5419 return JNI_OK; 5420 } 5421 5422 JavaThread* thread = JavaThread::current(); 5423 if (thread->has_last_Java_frame()) { 5424 #ifndef USDT2 5425 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); 5426 #else /* USDT2 */ 5427 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5428 (uint32_t) JNI_ERR); 5429 #endif /* USDT2 */ 5430 // Can't detach a thread that's running java, that can't work. 5431 return JNI_ERR; 5432 } 5433 5434 // Safepoint support. Have to do call-back to safepoint code, if in the 5435 // middel of a safepoint operation 5436 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5437 5438 // XXX: Note that JavaThread::exit() call below removes the guards on the 5439 // stack pages set up via enable_stack_{red,yellow}_zone() calls 5440 // above in jni_AttachCurrentThread. Unfortunately, while the setting 5441 // of the guards is visible in jni_AttachCurrentThread above, 5442 // the removal of the guards is buried below in JavaThread::exit() 5443 // here. The abstraction should be more symmetrically either exposed 5444 // or hidden (e.g. it could probably be hidden in the same 5445 // (platform-dependent) methods where we do alternate stack 5446 // maintenance work?) 5447 thread->exit(false, JavaThread::jni_detach); 5448 delete thread; 5449 5450 #ifndef USDT2 5451 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5452 #else /* USDT2 */ 5453 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5454 JNI_OK); 5455 #endif /* USDT2 */ 5456 return JNI_OK; 5457 } 5458 5459 #ifndef USDT2 5460 DT_RETURN_MARK_DECL(GetEnv, jint); 5461 #else /* USDT2 */ 5462 DT_RETURN_MARK_DECL(GetEnv, jint 5463 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref)); 5464 #endif /* USDT2 */ 5465 5466 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { 5467 #ifndef USDT2 5468 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); 5469 #else /* USDT2 */ 5470 HOTSPOT_JNI_GETENV_ENTRY( 5471 vm, penv, version); 5472 #endif /* USDT2 */ 5473 jint ret = JNI_ERR; 5474 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); 5475 5476 if (!vm_created) { 5477 *penv = NULL; 5478 ret = JNI_EDETACHED; 5479 return ret; 5480 } 5481 5482 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) { 5483 return ret; 5484 } 5485 5486 #ifndef JVMPI_VERSION_1 5487 // need these in order to be polite about older agents 5488 #define JVMPI_VERSION_1 ((jint)0x10000001) 5489 #define JVMPI_VERSION_1_1 ((jint)0x10000002) 5490 #define JVMPI_VERSION_1_2 ((jint)0x10000003) 5491 #endif // !JVMPI_VERSION_1 5492 5493 Thread* thread = ThreadLocalStorage::thread(); 5494 if (thread != NULL && thread->is_Java_thread()) { 5495 if (Threads::is_supported_jni_version_including_1_1(version)) { 5496 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); 5497 ret = JNI_OK; 5498 return ret; 5499 5500 } else if (version == JVMPI_VERSION_1 || 5501 version == JVMPI_VERSION_1_1 || 5502 version == JVMPI_VERSION_1_2) { 5503 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); 5504 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5505 ret = JNI_EVERSION; 5506 return ret; 5507 } else if (JvmtiExport::is_jvmdi_version(version)) { 5508 tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); 5509 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5510 ret = JNI_EVERSION; 5511 return ret; 5512 } else { 5513 *penv = NULL; 5514 ret = JNI_EVERSION; 5515 return ret; 5516 } 5517 } else { 5518 *penv = NULL; 5519 ret = JNI_EDETACHED; 5520 return ret; 5521 } 5522 } 5523 5524 5525 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { 5526 #ifndef USDT2 5527 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); 5528 #else /* USDT2 */ 5529 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY( 5530 vm, penv, _args); 5531 #endif /* USDT2 */ 5532 if (!vm_created) { 5533 #ifndef USDT2 5534 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); 5535 #else /* USDT2 */ 5536 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5537 (uint32_t) JNI_ERR); 5538 #endif /* USDT2 */ 5539 return JNI_ERR; 5540 } 5541 5542 JNIWrapper("AttachCurrentThreadAsDaemon"); 5543 jint ret = attach_current_thread(vm, penv, _args, true); 5544 #ifndef USDT2 5545 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); 5546 #else /* USDT2 */ 5547 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5548 ret); 5549 #endif /* USDT2 */ 5550 return ret; 5551 } 5552 5553 5554 } // End extern "C" 5555 5556 const struct JNIInvokeInterface_ jni_InvokeInterface = { 5557 NULL, 5558 NULL, 5559 NULL, 5560 5561 jni_DestroyJavaVM, 5562 jni_AttachCurrentThread, 5563 jni_DetachCurrentThread, 5564 jni_GetEnv, 5565 jni_AttachCurrentThreadAsDaemon 5566 };