1 /* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "ci/ciReplay.hpp" 28 #include "classfile/altHashing.hpp" 29 #include "classfile/classLoader.hpp" 30 #include "classfile/javaClasses.hpp" 31 #include "classfile/symbolTable.hpp" 32 #include "classfile/systemDictionary.hpp" 33 #include "classfile/vmSymbols.hpp" 34 #include "interpreter/linkResolver.hpp" 35 #ifndef SERIALGC 36 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 37 #endif // SERIALGC 38 #include "memory/allocation.hpp" 39 #include "memory/allocation.inline.hpp" 40 #include "memory/gcLocker.inline.hpp" 41 #include "memory/oopFactory.hpp" 42 #include "memory/universe.inline.hpp" 43 #include "oops/instanceKlass.hpp" 44 #include "oops/instanceOop.hpp" 45 #include "oops/markOop.hpp" 46 #include "oops/method.hpp" 47 #include "oops/objArrayKlass.hpp" 48 #include "oops/objArrayOop.hpp" 49 #include "oops/oop.inline.hpp" 50 #include "oops/symbol.hpp" 51 #include "oops/typeArrayKlass.hpp" 52 #include "oops/typeArrayOop.hpp" 53 #include "prims/jni.h" 54 #include "prims/jniCheck.hpp" 55 #include "prims/jniExport.hpp" 56 #include "prims/jniFastGetField.hpp" 57 #include "prims/jvm.h" 58 #include "prims/jvm_misc.hpp" 59 #include "prims/jvmtiExport.hpp" 60 #include "prims/jvmtiThreadState.hpp" 61 #include "runtime/compilationPolicy.hpp" 62 #include "runtime/fieldDescriptor.hpp" 63 #include "runtime/fprofiler.hpp" 64 #include "runtime/handles.inline.hpp" 65 #include "runtime/interfaceSupport.hpp" 66 #include "runtime/java.hpp" 67 #include "runtime/javaCalls.hpp" 68 #include "runtime/jfieldIDWorkaround.hpp" 69 #include "runtime/reflection.hpp" 70 #include "runtime/sharedRuntime.hpp" 71 #include "runtime/signature.hpp" 72 #include "runtime/vm_operations.hpp" 73 #include "services/runtimeService.hpp" 74 #include "trace/tracing.hpp" 75 #include "trace/traceEventTypes.hpp" 76 #include "utilities/defaultStream.hpp" 77 #include "utilities/dtrace.hpp" 78 #include "utilities/events.hpp" 79 #include "utilities/histogram.hpp" 80 #ifdef TARGET_OS_FAMILY_linux 81 # include "os_linux.inline.hpp" 82 # include "thread_linux.inline.hpp" 83 #endif 84 #ifdef TARGET_OS_FAMILY_solaris 85 # include "os_solaris.inline.hpp" 86 # include "thread_solaris.inline.hpp" 87 #endif 88 #ifdef TARGET_OS_FAMILY_windows 89 # include "os_windows.inline.hpp" 90 # include "thread_windows.inline.hpp" 91 #endif 92 #ifdef TARGET_OS_FAMILY_bsd 93 # include "os_bsd.inline.hpp" 94 # include "thread_bsd.inline.hpp" 95 #endif 96 97 static jint CurrentVersion = JNI_VERSION_1_6; 98 99 100 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace 101 // '-return' probe regardless of the return path is taken out of the function. 102 // Methods that have multiple return paths use this to avoid having to 103 // instrument each return path. Methods that use CHECK or THROW must use this 104 // since those macros can cause an immedate uninstrumented return. 105 // 106 // In order to get the return value, a reference to the variable containing 107 // the return value must be passed to the contructor of the object, and 108 // the return value must be set before return (since the mark object has 109 // a reference to it). 110 // 111 // Example: 112 // DT_RETURN_MARK_DECL(SomeFunc, int); 113 // JNI_ENTRY(int, SomeFunc, ...) 114 // int return_value = 0; 115 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); 116 // foo(CHECK_0) 117 // return_value = 5; 118 // return return_value; 119 // JNI_END 120 #ifndef USDT2 121 #define DT_RETURN_MARK_DECL(name, type) \ 122 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ 123 DTRACE_ONLY( \ 124 class DTraceReturnProbeMark_##name { \ 125 public: \ 126 const type& _ret_ref; \ 127 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 128 ~DTraceReturnProbeMark_##name() { \ 129 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ 130 } \ 131 } \ 132 ) 133 // Void functions are simpler since there's no return value 134 #define DT_VOID_RETURN_MARK_DECL(name) \ 135 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ 136 DTRACE_ONLY( \ 137 class DTraceReturnProbeMark_##name { \ 138 public: \ 139 ~DTraceReturnProbeMark_##name() { \ 140 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ 141 } \ 142 } \ 143 ) 144 145 #else /* USDT2 */ 146 147 #define DT_RETURN_MARK_DECL(name, type, probe) \ 148 DTRACE_ONLY( \ 149 class DTraceReturnProbeMark_##name { \ 150 public: \ 151 const type& _ret_ref; \ 152 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 153 ~DTraceReturnProbeMark_##name() { \ 154 probe; \ 155 } \ 156 } \ 157 ) 158 // Void functions are simpler since there's no return value 159 #define DT_VOID_RETURN_MARK_DECL(name, probe) \ 160 DTRACE_ONLY( \ 161 class DTraceReturnProbeMark_##name { \ 162 public: \ 163 ~DTraceReturnProbeMark_##name() { \ 164 probe; \ 165 } \ 166 } \ 167 ) 168 #endif /* USDT2 */ 169 170 // Place these macros in the function to mark the return. Non-void 171 // functions need the type and address of the return value. 172 #define DT_RETURN_MARK(name, type, ref) \ 173 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) 174 #define DT_VOID_RETURN_MARK(name) \ 175 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) 176 177 178 // Use these to select distinct code for floating-point vs. non-floating point 179 // situations. Used from within common macros where we need slightly 180 // different behavior for Float/Double 181 #define FP_SELECT_Boolean(intcode, fpcode) intcode 182 #define FP_SELECT_Byte(intcode, fpcode) intcode 183 #define FP_SELECT_Char(intcode, fpcode) intcode 184 #define FP_SELECT_Short(intcode, fpcode) intcode 185 #define FP_SELECT_Object(intcode, fpcode) intcode 186 #define FP_SELECT_Int(intcode, fpcode) intcode 187 #define FP_SELECT_Long(intcode, fpcode) intcode 188 #define FP_SELECT_Float(intcode, fpcode) fpcode 189 #define FP_SELECT_Double(intcode, fpcode) fpcode 190 #define FP_SELECT(TypeName, intcode, fpcode) \ 191 FP_SELECT_##TypeName(intcode, fpcode) 192 193 #define COMMA , 194 195 // Choose DT_RETURN_MARK macros based on the type: float/double -> void 196 // (dtrace doesn't do FP yet) 197 #ifndef USDT2 198 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ 199 FP_SELECT(TypeName, \ 200 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) 201 #else /* USDT2 */ 202 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \ 203 FP_SELECT(TypeName, \ 204 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) ) 205 #endif /* USDT2 */ 206 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ 207 FP_SELECT(TypeName, \ 208 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) 209 210 211 // out-of-line helpers for class jfieldIDWorkaround: 212 213 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) { 214 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { 215 uintptr_t as_uint = (uintptr_t) id; 216 intptr_t offset = raw_instance_offset(id); 217 if (is_checked_jfieldID(id)) { 218 if (!klass_hash_ok(k, id)) { 219 return false; 220 } 221 } 222 return InstanceKlass::cast(k)->contains_field_offset(offset); 223 } else { 224 JNIid* result = (JNIid*) id; 225 #ifdef ASSERT 226 return result != NULL && result->is_static_field_id(); 227 #else 228 return result != NULL; 229 #endif 230 } 231 } 232 233 234 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) { 235 if (offset <= small_offset_mask) { 236 Klass* field_klass = k; 237 Klass* super_klass = field_klass->super(); 238 // With compressed oops the most super class with nonstatic fields would 239 // be the owner of fields embedded in the header. 240 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() && 241 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) { 242 field_klass = super_klass; // super contains the field also 243 super_klass = field_klass->super(); 244 } 245 debug_only(No_Safepoint_Verifier nosafepoint;) 246 uintptr_t klass_hash = field_klass->identity_hash(); 247 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; 248 } else { 249 #if 0 250 #ifndef PRODUCT 251 { 252 ResourceMark rm; 253 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name()); 254 } 255 #endif 256 #endif 257 return 0; 258 } 259 } 260 261 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) { 262 uintptr_t as_uint = (uintptr_t) id; 263 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; 264 do { 265 debug_only(No_Safepoint_Verifier nosafepoint;) 266 // Could use a non-blocking query for identity_hash here... 267 if ((k->identity_hash() & klass_mask) == klass_hash) 268 return true; 269 k = k->super(); 270 } while (k != NULL); 271 return false; 272 } 273 274 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) { 275 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); 276 uintptr_t as_uint = (uintptr_t) id; 277 intptr_t offset = raw_instance_offset(id); 278 if (VerifyJNIFields) { 279 if (is_checked_jfieldID(id)) { 280 guarantee(klass_hash_ok(k, id), 281 "Bug in native code: jfieldID class must match object"); 282 } else { 283 #if 0 284 #ifndef PRODUCT 285 if (Verbose) { 286 ResourceMark rm; 287 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name()); 288 } 289 #endif 290 #endif 291 } 292 } 293 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset), 294 "Bug in native code: jfieldID offset must address interior of object"); 295 } 296 297 // Pick a reasonable higher bound for local capacity requested 298 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too 299 // high because a test (or very unusual application) may try to allocate 300 // that many handles and run out of swap space. An implementation is 301 // permitted to allocate more handles than the ensured capacity, so this 302 // value is set high enough to prevent compatibility problems. 303 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K; 304 305 306 // Wrapper to trace JNI functions 307 308 #ifdef ASSERT 309 Histogram* JNIHistogram; 310 static volatile jint JNIHistogram_lock = 0; 311 312 class JNITraceWrapper : public StackObj { 313 public: 314 JNITraceWrapper(const char* format, ...) { 315 if (TraceJNICalls) { 316 va_list ap; 317 va_start(ap, format); 318 tty->print("JNI "); 319 tty->vprint_cr(format, ap); 320 va_end(ap); 321 } 322 } 323 }; 324 325 class JNIHistogramElement : public HistogramElement { 326 public: 327 JNIHistogramElement(const char* name); 328 }; 329 330 JNIHistogramElement::JNIHistogramElement(const char* elementName) { 331 _name = elementName; 332 uintx count = 0; 333 334 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { 335 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { 336 count +=1; 337 if ( (WarnOnStalledSpinLock > 0) 338 && (count % WarnOnStalledSpinLock == 0)) { 339 warning("JNIHistogram_lock seems to be stalled"); 340 } 341 } 342 } 343 344 345 if(JNIHistogram == NULL) 346 JNIHistogram = new Histogram("JNI Call Counts",100); 347 348 JNIHistogram->add_element(this); 349 Atomic::dec(&JNIHistogram_lock); 350 } 351 352 #define JNICountWrapper(arg) \ 353 static JNIHistogramElement* e = new JNIHistogramElement(arg); \ 354 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ 355 if (e != NULL) e->increment_count() 356 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) 357 #else 358 #define JNIWrapper(arg) 359 #endif 360 361 362 // Implementation of JNI entries 363 364 #ifndef USDT2 365 DT_RETURN_MARK_DECL(DefineClass, jclass); 366 #else /* USDT2 */ 367 DT_RETURN_MARK_DECL(DefineClass, jclass 368 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref)); 369 #endif /* USDT2 */ 370 371 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, 372 const jbyte *buf, jsize bufLen)) 373 JNIWrapper("DefineClass"); 374 375 #ifndef USDT2 376 DTRACE_PROBE5(hotspot_jni, DefineClass__entry, 377 env, name, loaderRef, buf, bufLen); 378 #else /* USDT2 */ 379 HOTSPOT_JNI_DEFINECLASS_ENTRY( 380 env, (char*) name, loaderRef, (char*) buf, bufLen); 381 #endif /* USDT2 */ 382 jclass cls = NULL; 383 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); 384 385 TempNewSymbol class_name = NULL; 386 // Since exceptions can be thrown, class initialization can take place 387 // if name is NULL no check for class name in .class stream has to be made. 388 if (name != NULL) { 389 const int str_len = (int)strlen(name); 390 if (str_len > Symbol::max_length()) { 391 // It's impossible to create this class; the name cannot fit 392 // into the constant pool. 393 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 394 } 395 class_name = SymbolTable::new_symbol(name, CHECK_NULL); 396 } 397 ResourceMark rm(THREAD); 398 ClassFileStream st((u1*) buf, bufLen, NULL); 399 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); 400 401 if (UsePerfData && !class_loader.is_null()) { 402 // check whether the current caller thread holds the lock or not. 403 // If not, increment the corresponding counter 404 if (ObjectSynchronizer:: 405 query_lock_ownership((JavaThread*)THREAD, class_loader) != 406 ObjectSynchronizer::owner_self) { 407 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); 408 } 409 } 410 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, 411 Handle(), &st, true, 412 CHECK_NULL); 413 414 if (TraceClassResolution && k != NULL) { 415 trace_class_resolution(k); 416 } 417 418 cls = (jclass)JNIHandles::make_local( 419 env, k->java_mirror()); 420 return cls; 421 JNI_END 422 423 424 425 static bool first_time_FindClass = true; 426 427 #ifndef USDT2 428 DT_RETURN_MARK_DECL(FindClass, jclass); 429 #else /* USDT2 */ 430 DT_RETURN_MARK_DECL(FindClass, jclass 431 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref)); 432 #endif /* USDT2 */ 433 434 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) 435 JNIWrapper("FindClass"); 436 #ifndef USDT2 437 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); 438 #else /* USDT2 */ 439 HOTSPOT_JNI_FINDCLASS_ENTRY( 440 env, (char *)name); 441 #endif /* USDT2 */ 442 443 jclass result = NULL; 444 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); 445 446 // Remember if we are the first invocation of jni_FindClass 447 bool first_time = first_time_FindClass; 448 first_time_FindClass = false; 449 450 // Sanity check the name: it cannot be null or larger than the maximum size 451 // name we can fit in the constant pool. 452 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { 453 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 454 } 455 456 //%note jni_3 457 Handle loader; 458 Handle protection_domain; 459 // Find calling class 460 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); 461 if (k.not_null()) { 462 loader = Handle(THREAD, k->class_loader()); 463 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed 464 // in the correct class context. 465 if (loader.is_null() && 466 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { 467 JavaValue result(T_OBJECT); 468 JavaCalls::call_static(&result, k, 469 vmSymbols::getFromClass_name(), 470 vmSymbols::void_class_signature(), 471 thread); 472 if (HAS_PENDING_EXCEPTION) { 473 Handle ex(thread, thread->pending_exception()); 474 CLEAR_PENDING_EXCEPTION; 475 THROW_HANDLE_0(ex); 476 } 477 oop mirror = (oop) result.get_jobject(); 478 loader = Handle(THREAD, 479 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader()); 480 protection_domain = Handle(THREAD, 481 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain()); 482 } 483 } else { 484 // We call ClassLoader.getSystemClassLoader to obtain the system class loader. 485 loader = Handle(THREAD, SystemDictionary::java_system_loader()); 486 } 487 488 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 489 result = find_class_from_class_loader(env, sym, true, loader, 490 protection_domain, true, thread); 491 492 if (TraceClassResolution && result != NULL) { 493 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 494 } 495 496 // If we were the first invocation of jni_FindClass, we enable compilation again 497 // rather than just allowing invocation counter to overflow and decay. 498 // Controlled by flag DelayCompilationDuringStartup. 499 if (first_time && !CompileTheWorld) 500 CompilationPolicy::completed_vm_startup(); 501 502 return result; 503 JNI_END 504 505 #ifndef USDT2 506 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); 507 #else /* USDT2 */ 508 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID 509 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref)); 510 #endif /* USDT2 */ 511 512 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) 513 JNIWrapper("FromReflectedMethod"); 514 #ifndef USDT2 515 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); 516 #else /* USDT2 */ 517 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY( 518 env, method); 519 #endif /* USDT2 */ 520 jmethodID ret = NULL; 521 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); 522 523 // method is a handle to a java.lang.reflect.Method object 524 oop reflected = JNIHandles::resolve_non_null(method); 525 oop mirror = NULL; 526 int slot = 0; 527 528 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { 529 mirror = java_lang_reflect_Constructor::clazz(reflected); 530 slot = java_lang_reflect_Constructor::slot(reflected); 531 } else { 532 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type"); 533 mirror = java_lang_reflect_Method::clazz(reflected); 534 slot = java_lang_reflect_Method::slot(reflected); 535 } 536 Klass* k = java_lang_Class::as_Klass(mirror); 537 538 KlassHandle k1(THREAD, k); 539 // Make sure class is initialized before handing id's out to methods 540 k1()->initialize(CHECK_NULL); 541 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot); 542 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted 543 return ret; 544 JNI_END 545 546 #ifndef USDT2 547 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); 548 #else /* USDT2 */ 549 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID 550 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref)); 551 #endif /* USDT2 */ 552 553 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) 554 JNIWrapper("FromReflectedField"); 555 #ifndef USDT2 556 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); 557 #else /* USDT2 */ 558 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY( 559 env, field); 560 #endif /* USDT2 */ 561 jfieldID ret = NULL; 562 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); 563 564 // field is a handle to a java.lang.reflect.Field object 565 oop reflected = JNIHandles::resolve_non_null(field); 566 oop mirror = java_lang_reflect_Field::clazz(reflected); 567 Klass* k = java_lang_Class::as_Klass(mirror); 568 int slot = java_lang_reflect_Field::slot(reflected); 569 int modifiers = java_lang_reflect_Field::modifiers(reflected); 570 571 KlassHandle k1(THREAD, k); 572 // Make sure class is initialized before handing id's out to fields 573 k1()->initialize(CHECK_NULL); 574 575 // First check if this is a static field 576 if (modifiers & JVM_ACC_STATIC) { 577 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 578 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset); 579 assert(id != NULL, "corrupt Field object"); 580 debug_only(id->set_is_static_field_id();) 581 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 582 ret = jfieldIDWorkaround::to_static_jfieldID(id); 583 return ret; 584 } 585 586 // The slot is the index of the field description in the field-array 587 // The jfieldID is the offset of the field within the object 588 // It may also have hash bits for k, if VerifyJNIFields is turned on. 589 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 590 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); 591 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); 592 return ret; 593 JNI_END 594 595 #ifndef USDT2 596 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); 597 #else /* USDT2 */ 598 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject 599 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref)); 600 #endif /* USDT2 */ 601 602 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) 603 JNIWrapper("ToReflectedMethod"); 604 #ifndef USDT2 605 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); 606 #else /* USDT2 */ 607 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY( 608 env, cls, (uintptr_t) method_id, isStatic); 609 #endif /* USDT2 */ 610 jobject ret = NULL; 611 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); 612 613 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id)); 614 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); 615 oop reflection_method; 616 if (m->is_initializer()) { 617 reflection_method = Reflection::new_constructor(m, CHECK_NULL); 618 } else { 619 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); 620 } 621 ret = JNIHandles::make_local(env, reflection_method); 622 return ret; 623 JNI_END 624 625 #ifndef USDT2 626 DT_RETURN_MARK_DECL(GetSuperclass, jclass); 627 #else /* USDT2 */ 628 DT_RETURN_MARK_DECL(GetSuperclass, jclass 629 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref)); 630 #endif /* USDT2 */ 631 632 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) 633 JNIWrapper("GetSuperclass"); 634 #ifndef USDT2 635 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); 636 #else /* USDT2 */ 637 HOTSPOT_JNI_GETSUPERCLASS_ENTRY( 638 env, sub); 639 #endif /* USDT2 */ 640 jclass obj = NULL; 641 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); 642 643 oop mirror = JNIHandles::resolve_non_null(sub); 644 // primitive classes return NULL 645 if (java_lang_Class::is_primitive(mirror)) return NULL; 646 647 // Rules of Class.getSuperClass as implemented by KLass::java_super: 648 // arrays return Object 649 // interfaces return NULL 650 // proper classes return Klass::super() 651 Klass* k = java_lang_Class::as_Klass(mirror); 652 if (k->is_interface()) return NULL; 653 654 // return mirror for superclass 655 Klass* super = k->java_super(); 656 // super2 is the value computed by the compiler's getSuperClass intrinsic: 657 debug_only(Klass* super2 = ( k->oop_is_array() 658 ? SystemDictionary::Object_klass() 659 : k->super() ) ); 660 assert(super == super2, 661 "java_super computation depends on interface, array, other super"); 662 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror()); 663 return obj; 664 JNI_END 665 666 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) 667 JNIWrapper("IsSubclassOf"); 668 #ifndef USDT2 669 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); 670 #else /* USDT2 */ 671 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY( 672 env, sub, super); 673 #endif /* USDT2 */ 674 oop sub_mirror = JNIHandles::resolve_non_null(sub); 675 oop super_mirror = JNIHandles::resolve_non_null(super); 676 if (java_lang_Class::is_primitive(sub_mirror) || 677 java_lang_Class::is_primitive(super_mirror)) { 678 jboolean ret = (sub_mirror == super_mirror); 679 #ifndef USDT2 680 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 681 #else /* USDT2 */ 682 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 683 ret); 684 #endif /* USDT2 */ 685 return ret; 686 } 687 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror); 688 Klass* super_klass = java_lang_Class::as_Klass(super_mirror); 689 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom"); 690 jboolean ret = sub_klass->is_subtype_of(super_klass) ? 691 JNI_TRUE : JNI_FALSE; 692 #ifndef USDT2 693 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 694 #else /* USDT2 */ 695 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 696 ret); 697 #endif /* USDT2 */ 698 return ret; 699 JNI_END 700 701 #ifndef USDT2 702 DT_RETURN_MARK_DECL(Throw, jint); 703 #else /* USDT2 */ 704 DT_RETURN_MARK_DECL(Throw, jint 705 , HOTSPOT_JNI_THROW_RETURN(_ret_ref)); 706 #endif /* USDT2 */ 707 708 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) 709 JNIWrapper("Throw"); 710 #ifndef USDT2 711 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); 712 #else /* USDT2 */ 713 HOTSPOT_JNI_THROW_ENTRY( 714 env, obj); 715 #endif /* USDT2 */ 716 jint ret = JNI_OK; 717 DT_RETURN_MARK(Throw, jint, (const jint&)ret); 718 719 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); 720 ShouldNotReachHere(); 721 JNI_END 722 723 #ifndef USDT2 724 DT_RETURN_MARK_DECL(ThrowNew, jint); 725 #else /* USDT2 */ 726 DT_RETURN_MARK_DECL(ThrowNew, jint 727 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref)); 728 #endif /* USDT2 */ 729 730 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) 731 JNIWrapper("ThrowNew"); 732 #ifndef USDT2 733 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); 734 #else /* USDT2 */ 735 HOTSPOT_JNI_THROWNEW_ENTRY( 736 env, clazz, (char *) message); 737 #endif /* USDT2 */ 738 jint ret = JNI_OK; 739 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); 740 741 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 742 Symbol* name = k->name(); 743 Handle class_loader (THREAD, k->class_loader()); 744 Handle protection_domain (THREAD, k->protection_domain()); 745 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); 746 ShouldNotReachHere(); 747 JNI_END 748 749 750 // JNI functions only transform a pending async exception to a synchronous 751 // exception in ExceptionOccurred and ExceptionCheck calls, since 752 // delivering an async exception in other places won't change the native 753 // code's control flow and would be harmful when native code further calls 754 // JNI functions with a pending exception. Async exception is also checked 755 // during the call, so ExceptionOccurred/ExceptionCheck won't return 756 // false but deliver the async exception at the very end during 757 // state transition. 758 759 static void jni_check_async_exceptions(JavaThread *thread) { 760 assert(thread == Thread::current(), "must be itself"); 761 thread->check_and_handle_async_exceptions(); 762 } 763 764 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) 765 JNIWrapper("ExceptionOccurred"); 766 #ifndef USDT2 767 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); 768 #else /* USDT2 */ 769 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY( 770 env); 771 #endif /* USDT2 */ 772 jni_check_async_exceptions(thread); 773 oop exception = thread->pending_exception(); 774 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); 775 #ifndef USDT2 776 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); 777 #else /* USDT2 */ 778 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN( 779 ret); 780 #endif /* USDT2 */ 781 return ret; 782 JNI_END 783 784 785 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) 786 JNIWrapper("ExceptionDescribe"); 787 #ifndef USDT2 788 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); 789 #else /* USDT2 */ 790 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY( 791 env); 792 #endif /* USDT2 */ 793 if (thread->has_pending_exception()) { 794 Handle ex(thread, thread->pending_exception()); 795 thread->clear_pending_exception(); 796 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) { 797 // Don't print anything if we are being killed. 798 } else { 799 jio_fprintf(defaultStream::error_stream(), "Exception "); 800 if (thread != NULL && thread->threadObj() != NULL) { 801 ResourceMark rm(THREAD); 802 jio_fprintf(defaultStream::error_stream(), 803 "in thread \"%s\" ", thread->get_thread_name()); 804 } 805 if (ex->is_a(SystemDictionary::Throwable_klass())) { 806 JavaValue result(T_VOID); 807 JavaCalls::call_virtual(&result, 808 ex, 809 KlassHandle(THREAD, 810 SystemDictionary::Throwable_klass()), 811 vmSymbols::printStackTrace_name(), 812 vmSymbols::void_method_signature(), 813 THREAD); 814 // If an exception is thrown in the call it gets thrown away. Not much 815 // we can do with it. The native code that calls this, does not check 816 // for the exception - hence, it might still be in the thread when DestroyVM gets 817 // called, potentially causing a few asserts to trigger - since no pending exception 818 // is expected. 819 CLEAR_PENDING_EXCEPTION; 820 } else { 821 ResourceMark rm(THREAD); 822 jio_fprintf(defaultStream::error_stream(), 823 ". Uncaught exception of type %s.", 824 ex->klass()->external_name()); 825 } 826 } 827 } 828 #ifndef USDT2 829 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); 830 #else /* USDT2 */ 831 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN( 832 ); 833 #endif /* USDT2 */ 834 JNI_END 835 836 837 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) 838 JNIWrapper("ExceptionClear"); 839 #ifndef USDT2 840 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); 841 #else /* USDT2 */ 842 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY( 843 env); 844 #endif /* USDT2 */ 845 846 // The jni code might be using this API to clear java thrown exception. 847 // So just mark jvmti thread exception state as exception caught. 848 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); 849 if (state != NULL && state->is_exception_detected()) { 850 state->set_exception_caught(); 851 } 852 thread->clear_pending_exception(); 853 #ifndef USDT2 854 DTRACE_PROBE(hotspot_jni, ExceptionClear__return); 855 #else /* USDT2 */ 856 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN( 857 ); 858 #endif /* USDT2 */ 859 JNI_END 860 861 862 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) 863 JNIWrapper("FatalError"); 864 #ifndef USDT2 865 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); 866 #else /* USDT2 */ 867 HOTSPOT_JNI_FATALERROR_ENTRY( 868 env, (char *) msg); 869 #endif /* USDT2 */ 870 tty->print_cr("FATAL ERROR in native method: %s", msg); 871 thread->print_stack(); 872 os::abort(); // Dump core and abort 873 JNI_END 874 875 876 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) 877 JNIWrapper("PushLocalFrame"); 878 #ifndef USDT2 879 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); 880 #else /* USDT2 */ 881 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY( 882 env, capacity); 883 #endif /* USDT2 */ 884 //%note jni_11 885 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) { 886 #ifndef USDT2 887 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); 888 #else /* USDT2 */ 889 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 890 (uint32_t)JNI_ERR); 891 #endif /* USDT2 */ 892 return JNI_ERR; 893 } 894 JNIHandleBlock* old_handles = thread->active_handles(); 895 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 896 assert(new_handles != NULL, "should not be NULL"); 897 new_handles->set_pop_frame_link(old_handles); 898 thread->set_active_handles(new_handles); 899 jint ret = JNI_OK; 900 #ifndef USDT2 901 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); 902 #else /* USDT2 */ 903 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 904 ret); 905 #endif /* USDT2 */ 906 return ret; 907 JNI_END 908 909 910 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) 911 JNIWrapper("PopLocalFrame"); 912 #ifndef USDT2 913 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); 914 #else /* USDT2 */ 915 HOTSPOT_JNI_POPLOCALFRAME_ENTRY( 916 env, result); 917 #endif /* USDT2 */ 918 //%note jni_11 919 Handle result_handle(thread, JNIHandles::resolve(result)); 920 JNIHandleBlock* old_handles = thread->active_handles(); 921 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); 922 if (new_handles != NULL) { 923 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. 924 // This way code will still work if PopLocalFrame is called without a corresponding 925 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise 926 // the release_block call will release the blocks. 927 thread->set_active_handles(new_handles); 928 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below 929 JNIHandleBlock::release_block(old_handles, thread); // may block 930 result = JNIHandles::make_local(thread, result_handle()); 931 } 932 #ifndef USDT2 933 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); 934 #else /* USDT2 */ 935 HOTSPOT_JNI_POPLOCALFRAME_RETURN( 936 result); 937 #endif /* USDT2 */ 938 return result; 939 JNI_END 940 941 942 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) 943 JNIWrapper("NewGlobalRef"); 944 #ifndef USDT2 945 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); 946 #else /* USDT2 */ 947 HOTSPOT_JNI_NEWGLOBALREF_ENTRY( 948 env, ref); 949 #endif /* USDT2 */ 950 Handle ref_handle(thread, JNIHandles::resolve(ref)); 951 jobject ret = JNIHandles::make_global(ref_handle); 952 #ifndef USDT2 953 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); 954 #else /* USDT2 */ 955 HOTSPOT_JNI_NEWGLOBALREF_RETURN( 956 ret); 957 #endif /* USDT2 */ 958 return ret; 959 JNI_END 960 961 // Must be JNI_ENTRY (with HandleMark) 962 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) 963 JNIWrapper("DeleteGlobalRef"); 964 #ifndef USDT2 965 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); 966 #else /* USDT2 */ 967 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY( 968 env, ref); 969 #endif /* USDT2 */ 970 JNIHandles::destroy_global(ref); 971 #ifndef USDT2 972 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); 973 #else /* USDT2 */ 974 HOTSPOT_JNI_DELETEGLOBALREF_RETURN( 975 ); 976 #endif /* USDT2 */ 977 JNI_END 978 979 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) 980 JNIWrapper("DeleteLocalRef"); 981 #ifndef USDT2 982 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); 983 #else /* USDT2 */ 984 HOTSPOT_JNI_DELETELOCALREF_ENTRY( 985 env, obj); 986 #endif /* USDT2 */ 987 JNIHandles::destroy_local(obj); 988 #ifndef USDT2 989 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); 990 #else /* USDT2 */ 991 HOTSPOT_JNI_DELETELOCALREF_RETURN( 992 ); 993 #endif /* USDT2 */ 994 JNI_END 995 996 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) 997 JNIWrapper("IsSameObject"); 998 #ifndef USDT2 999 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); 1000 #else /* USDT2 */ 1001 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY( 1002 env, r1, r2); 1003 #endif /* USDT2 */ 1004 oop a = JNIHandles::resolve(r1); 1005 oop b = JNIHandles::resolve(r2); 1006 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; 1007 #ifndef USDT2 1008 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); 1009 #else /* USDT2 */ 1010 HOTSPOT_JNI_ISSAMEOBJECT_RETURN( 1011 ret); 1012 #endif /* USDT2 */ 1013 return ret; 1014 JNI_END 1015 1016 1017 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) 1018 JNIWrapper("NewLocalRef"); 1019 #ifndef USDT2 1020 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); 1021 #else /* USDT2 */ 1022 HOTSPOT_JNI_NEWLOCALREF_ENTRY( 1023 env, ref); 1024 #endif /* USDT2 */ 1025 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); 1026 #ifndef USDT2 1027 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); 1028 #else /* USDT2 */ 1029 HOTSPOT_JNI_NEWLOCALREF_RETURN( 1030 ret); 1031 #endif /* USDT2 */ 1032 return ret; 1033 JNI_END 1034 1035 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) 1036 JNIWrapper("EnsureLocalCapacity"); 1037 #ifndef USDT2 1038 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); 1039 #else /* USDT2 */ 1040 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY( 1041 env, capacity); 1042 #endif /* USDT2 */ 1043 jint ret; 1044 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) { 1045 ret = JNI_OK; 1046 } else { 1047 ret = JNI_ERR; 1048 } 1049 #ifndef USDT2 1050 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); 1051 #else /* USDT2 */ 1052 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN( 1053 ret); 1054 #endif /* USDT2 */ 1055 return ret; 1056 JNI_END 1057 1058 // Return the Handle Type 1059 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) 1060 JNIWrapper("GetObjectRefType"); 1061 #ifndef USDT2 1062 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); 1063 #else /* USDT2 */ 1064 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY( 1065 env, obj); 1066 #endif /* USDT2 */ 1067 jobjectRefType ret; 1068 if (JNIHandles::is_local_handle(thread, obj) || 1069 JNIHandles::is_frame_handle(thread, obj)) 1070 ret = JNILocalRefType; 1071 else if (JNIHandles::is_global_handle(obj)) 1072 ret = JNIGlobalRefType; 1073 else if (JNIHandles::is_weak_global_handle(obj)) 1074 ret = JNIWeakGlobalRefType; 1075 else 1076 ret = JNIInvalidRefType; 1077 #ifndef USDT2 1078 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); 1079 #else /* USDT2 */ 1080 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN( 1081 (void *) ret); 1082 #endif /* USDT2 */ 1083 return ret; 1084 JNI_END 1085 1086 1087 class JNI_ArgumentPusher : public SignatureIterator { 1088 protected: 1089 JavaCallArguments* _arguments; 1090 1091 virtual void get_bool () = 0; 1092 virtual void get_char () = 0; 1093 virtual void get_short () = 0; 1094 virtual void get_byte () = 0; 1095 virtual void get_int () = 0; 1096 virtual void get_long () = 0; 1097 virtual void get_float () = 0; 1098 virtual void get_double () = 0; 1099 virtual void get_object () = 0; 1100 1101 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) { 1102 this->_return_type = T_ILLEGAL; 1103 _arguments = NULL; 1104 } 1105 1106 public: 1107 virtual void iterate( uint64_t fingerprint ) = 0; 1108 1109 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } 1110 1111 inline void do_bool() { if (!is_return_type()) get_bool(); } 1112 inline void do_char() { if (!is_return_type()) get_char(); } 1113 inline void do_short() { if (!is_return_type()) get_short(); } 1114 inline void do_byte() { if (!is_return_type()) get_byte(); } 1115 inline void do_int() { if (!is_return_type()) get_int(); } 1116 inline void do_long() { if (!is_return_type()) get_long(); } 1117 inline void do_float() { if (!is_return_type()) get_float(); } 1118 inline void do_double() { if (!is_return_type()) get_double(); } 1119 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } 1120 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array 1121 inline void do_void() { } 1122 1123 JavaCallArguments* arguments() { return _arguments; } 1124 void push_receiver(Handle h) { _arguments->push_oop(h); } 1125 }; 1126 1127 1128 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { 1129 protected: 1130 va_list _ap; 1131 1132 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg 1133 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg 1134 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg 1135 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg 1136 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } 1137 1138 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests 1139 1140 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } 1141 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg 1142 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } 1143 inline void get_object() { jobject l = va_arg(_ap, jobject); 1144 _arguments->push_oop(Handle((oop *)l, false)); } 1145 1146 inline void set_ap(va_list rap) { 1147 #ifdef va_copy 1148 va_copy(_ap, rap); 1149 #elif defined (__va_copy) 1150 __va_copy(_ap, rap); 1151 #else 1152 _ap = rap; 1153 #endif 1154 } 1155 1156 public: 1157 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap) 1158 : JNI_ArgumentPusher(signature) { 1159 set_ap(rap); 1160 } 1161 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap) 1162 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1163 set_ap(rap); 1164 } 1165 1166 // Optimized path if we have the bitvector form of signature 1167 void iterate( uint64_t fingerprint ) { 1168 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments 1169 else { 1170 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1171 result_feature_mask); 1172 1173 assert(fingerprint, "Fingerprint should not be 0"); 1174 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1175 while ( 1 ) { 1176 switch ( fingerprint & parameter_feature_mask ) { 1177 case bool_parm: 1178 case char_parm: 1179 case short_parm: 1180 case byte_parm: 1181 case int_parm: 1182 get_int(); 1183 break; 1184 case obj_parm: 1185 get_object(); 1186 break; 1187 case long_parm: 1188 get_long(); 1189 break; 1190 case float_parm: 1191 get_float(); 1192 break; 1193 case double_parm: 1194 get_double(); 1195 break; 1196 case done_parm: 1197 return; 1198 break; 1199 default: 1200 ShouldNotReachHere(); 1201 break; 1202 } 1203 fingerprint >>= parameter_feature_size; 1204 } 1205 } 1206 } 1207 }; 1208 1209 1210 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { 1211 protected: 1212 const jvalue *_ap; 1213 1214 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); } 1215 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } 1216 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } 1217 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } 1218 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } 1219 1220 inline void get_long() { _arguments->push_long((_ap++)->j); } 1221 inline void get_float() { _arguments->push_float((_ap++)->f); } 1222 inline void get_double() { _arguments->push_double((_ap++)->d);} 1223 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } 1224 1225 inline void set_ap(const jvalue *rap) { _ap = rap; } 1226 1227 public: 1228 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap) 1229 : JNI_ArgumentPusher(signature) { 1230 set_ap(rap); 1231 } 1232 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap) 1233 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1234 set_ap(rap); 1235 } 1236 1237 // Optimized path if we have the bitvector form of signature 1238 void iterate( uint64_t fingerprint ) { 1239 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments 1240 else { 1241 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1242 result_feature_mask); 1243 assert(fingerprint, "Fingerprint should not be 0"); 1244 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1245 while ( 1 ) { 1246 switch ( fingerprint & parameter_feature_mask ) { 1247 case bool_parm: 1248 get_bool(); 1249 break; 1250 case char_parm: 1251 get_char(); 1252 break; 1253 case short_parm: 1254 get_short(); 1255 break; 1256 case byte_parm: 1257 get_byte(); 1258 break; 1259 case int_parm: 1260 get_int(); 1261 break; 1262 case obj_parm: 1263 get_object(); 1264 break; 1265 case long_parm: 1266 get_long(); 1267 break; 1268 case float_parm: 1269 get_float(); 1270 break; 1271 case double_parm: 1272 get_double(); 1273 break; 1274 case done_parm: 1275 return; 1276 break; 1277 default: 1278 ShouldNotReachHere(); 1279 break; 1280 } 1281 fingerprint >>= parameter_feature_size; 1282 } 1283 } 1284 } 1285 }; 1286 1287 1288 enum JNICallType { 1289 JNI_STATIC, 1290 JNI_VIRTUAL, 1291 JNI_NONVIRTUAL 1292 }; 1293 1294 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) { 1295 assert(!method.is_null() , "method should not be null"); 1296 1297 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc) 1298 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass()); 1299 KlassHandle spec_klass (THREAD, method->method_holder()); 1300 Symbol* name = method->name(); 1301 Symbol* signature = method->signature(); 1302 CallInfo info; 1303 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle())); 1304 return info.selected_method(); 1305 } 1306 1307 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) { 1308 assert(!method.is_null() , "method should not be null"); 1309 1310 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc) 1311 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass()); 1312 KlassHandle spec_klass (THREAD, method->method_holder()); 1313 Symbol* name = method->name(); 1314 Symbol* signature = method->signature(); 1315 CallInfo info; 1316 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle())); 1317 return info.selected_method(); 1318 } 1319 1320 1321 1322 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1323 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id)); 1324 1325 // Create object to hold arguments for the JavaCall, and associate it with 1326 // the jni parser 1327 ResourceMark rm(THREAD); 1328 int number_of_parameters = method->size_of_parameters(); 1329 JavaCallArguments java_args(number_of_parameters); 1330 args->set_java_argument_object(&java_args); 1331 1332 assert(method->is_static(), "method should be static"); 1333 1334 // Fill out JavaCallArguments object 1335 args->iterate( Fingerprinter(method).fingerprint() ); 1336 // Initialize result type 1337 result->set_type(args->get_ret_type()); 1338 1339 // Invoke the method. Result is returned as oop. 1340 JavaCalls::call(result, method, &java_args, CHECK); 1341 1342 // Convert result 1343 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1344 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1345 } 1346 } 1347 1348 1349 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1350 oop recv = JNIHandles::resolve(receiver); 1351 if (recv == NULL) { 1352 THROW(vmSymbols::java_lang_NullPointerException()); 1353 } 1354 Handle h_recv(THREAD, recv); 1355 1356 int number_of_parameters; 1357 Method* selected_method; 1358 { 1359 Method* m = Method::resolve_jmethod_id(method_id); 1360 number_of_parameters = m->size_of_parameters(); 1361 Klass* holder = m->method_holder(); 1362 if (!(holder)->is_interface()) { 1363 // non-interface call -- for that little speed boost, don't handlize 1364 debug_only(No_Safepoint_Verifier nosafepoint;) 1365 if (call_type == JNI_VIRTUAL) { 1366 // jni_GetMethodID makes sure class is linked and initialized 1367 // so m should have a valid vtable index. 1368 int vtbl_index = m->vtable_index(); 1369 if (vtbl_index != Method::nonvirtual_vtable_index) { 1370 Klass* k = h_recv->klass(); 1371 // k might be an arrayKlassOop but all vtables start at 1372 // the same place. The cast is to avoid virtual call and assertion. 1373 InstanceKlass *ik = (InstanceKlass*)k; 1374 selected_method = ik->method_at_vtable(vtbl_index); 1375 } else { 1376 // final method 1377 selected_method = m; 1378 } 1379 } else { 1380 // JNI_NONVIRTUAL call 1381 selected_method = m; 1382 } 1383 } else { 1384 // interface call 1385 KlassHandle h_holder(THREAD, holder); 1386 1387 int itbl_index = m->cached_itable_index(); 1388 if (itbl_index == -1) { 1389 itbl_index = klassItable::compute_itable_index(m); 1390 m->set_cached_itable_index(itbl_index); 1391 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again 1392 } 1393 Klass* k = h_recv->klass(); 1394 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); 1395 } 1396 } 1397 1398 methodHandle method(THREAD, selected_method); 1399 1400 // Create object to hold arguments for the JavaCall, and associate it with 1401 // the jni parser 1402 ResourceMark rm(THREAD); 1403 JavaCallArguments java_args(number_of_parameters); 1404 args->set_java_argument_object(&java_args); 1405 1406 // handle arguments 1407 assert(!method->is_static(), "method should not be static"); 1408 args->push_receiver(h_recv); // Push jobject handle 1409 1410 // Fill out JavaCallArguments object 1411 args->iterate( Fingerprinter(method).fingerprint() ); 1412 // Initialize result type 1413 result->set_type(args->get_ret_type()); 1414 1415 // Invoke the method. Result is returned as oop. 1416 JavaCalls::call(result, method, &java_args, CHECK); 1417 1418 // Convert result 1419 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1420 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1421 } 1422 } 1423 1424 1425 static instanceOop alloc_object(jclass clazz, TRAPS) { 1426 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1427 k()->check_valid_for_instantiation(false, CHECK_NULL); 1428 InstanceKlass::cast(k())->initialize(CHECK_NULL); 1429 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD); 1430 return ih; 1431 } 1432 1433 #ifndef USDT2 1434 DT_RETURN_MARK_DECL(AllocObject, jobject); 1435 #else /* USDT2 */ 1436 DT_RETURN_MARK_DECL(AllocObject, jobject 1437 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref)); 1438 #endif /* USDT2 */ 1439 1440 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) 1441 JNIWrapper("AllocObject"); 1442 1443 #ifndef USDT2 1444 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); 1445 #else /* USDT2 */ 1446 HOTSPOT_JNI_ALLOCOBJECT_ENTRY( 1447 env, clazz); 1448 #endif /* USDT2 */ 1449 jobject ret = NULL; 1450 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); 1451 1452 instanceOop i = alloc_object(clazz, CHECK_NULL); 1453 ret = JNIHandles::make_local(env, i); 1454 return ret; 1455 JNI_END 1456 1457 #ifndef USDT2 1458 DT_RETURN_MARK_DECL(NewObjectA, jobject); 1459 #else /* USDT2 */ 1460 DT_RETURN_MARK_DECL(NewObjectA, jobject 1461 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref)); 1462 #endif /* USDT2 */ 1463 1464 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) 1465 JNIWrapper("NewObjectA"); 1466 #ifndef USDT2 1467 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); 1468 #else /* USDT2 */ 1469 HOTSPOT_JNI_NEWOBJECTA_ENTRY( 1470 env, clazz, (uintptr_t) methodID); 1471 #endif /* USDT2 */ 1472 jobject obj = NULL; 1473 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); 1474 1475 instanceOop i = alloc_object(clazz, CHECK_NULL); 1476 obj = JNIHandles::make_local(env, i); 1477 JavaValue jvalue(T_VOID); 1478 JNI_ArgumentPusherArray ap(methodID, args); 1479 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1480 return obj; 1481 JNI_END 1482 1483 #ifndef USDT2 1484 DT_RETURN_MARK_DECL(NewObjectV, jobject); 1485 #else /* USDT2 */ 1486 DT_RETURN_MARK_DECL(NewObjectV, jobject 1487 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref)); 1488 #endif /* USDT2 */ 1489 1490 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) 1491 JNIWrapper("NewObjectV"); 1492 #ifndef USDT2 1493 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); 1494 #else /* USDT2 */ 1495 HOTSPOT_JNI_NEWOBJECTV_ENTRY( 1496 env, clazz, (uintptr_t) methodID); 1497 #endif /* USDT2 */ 1498 jobject obj = NULL; 1499 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); 1500 1501 instanceOop i = alloc_object(clazz, CHECK_NULL); 1502 obj = JNIHandles::make_local(env, i); 1503 JavaValue jvalue(T_VOID); 1504 JNI_ArgumentPusherVaArg ap(methodID, args); 1505 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1506 return obj; 1507 JNI_END 1508 1509 #ifndef USDT2 1510 DT_RETURN_MARK_DECL(NewObject, jobject); 1511 #else /* USDT2 */ 1512 DT_RETURN_MARK_DECL(NewObject, jobject 1513 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref)); 1514 #endif /* USDT2 */ 1515 1516 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) 1517 JNIWrapper("NewObject"); 1518 #ifndef USDT2 1519 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); 1520 #else /* USDT2 */ 1521 HOTSPOT_JNI_NEWOBJECT_ENTRY( 1522 env, clazz, (uintptr_t) methodID); 1523 #endif /* USDT2 */ 1524 jobject obj = NULL; 1525 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); 1526 1527 instanceOop i = alloc_object(clazz, CHECK_NULL); 1528 obj = JNIHandles::make_local(env, i); 1529 va_list args; 1530 va_start(args, methodID); 1531 JavaValue jvalue(T_VOID); 1532 JNI_ArgumentPusherVaArg ap(methodID, args); 1533 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1534 va_end(args); 1535 return obj; 1536 JNI_END 1537 1538 1539 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) 1540 JNIWrapper("GetObjectClass"); 1541 #ifndef USDT2 1542 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); 1543 #else /* USDT2 */ 1544 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY( 1545 env, obj); 1546 #endif /* USDT2 */ 1547 Klass* k = JNIHandles::resolve_non_null(obj)->klass(); 1548 jclass ret = 1549 (jclass) JNIHandles::make_local(env, k->java_mirror()); 1550 #ifndef USDT2 1551 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); 1552 #else /* USDT2 */ 1553 HOTSPOT_JNI_GETOBJECTCLASS_RETURN( 1554 ret); 1555 #endif /* USDT2 */ 1556 return ret; 1557 JNI_END 1558 1559 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) 1560 JNIWrapper("IsInstanceOf"); 1561 #ifndef USDT2 1562 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); 1563 #else /* USDT2 */ 1564 HOTSPOT_JNI_ISINSTANCEOF_ENTRY( 1565 env, obj, clazz); 1566 #endif /* USDT2 */ 1567 jboolean ret = JNI_TRUE; 1568 if (obj != NULL) { 1569 ret = JNI_FALSE; 1570 Klass* k = java_lang_Class::as_Klass( 1571 JNIHandles::resolve_non_null(clazz)); 1572 if (k != NULL) { 1573 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; 1574 } 1575 } 1576 #ifndef USDT2 1577 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); 1578 #else /* USDT2 */ 1579 HOTSPOT_JNI_ISINSTANCEOF_RETURN( 1580 ret); 1581 #endif /* USDT2 */ 1582 return ret; 1583 JNI_END 1584 1585 1586 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, 1587 const char *sig, bool is_static, TRAPS) { 1588 // %%%% This code should probably just call into a method in the LinkResolver 1589 // 1590 // The class should have been loaded (we have an instance of the class 1591 // passed in) so the method and signature should already be in the symbol 1592 // table. If they're not there, the method doesn't exist. 1593 const char *name_to_probe = (name_str == NULL) 1594 ? vmSymbols::object_initializer_name()->as_C_string() 1595 : name_str; 1596 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe)); 1597 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig)); 1598 1599 if (name == NULL || signature == NULL) { 1600 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1601 } 1602 1603 // Throw a NoSuchMethodError exception if we have an instance of a 1604 // primitive java.lang.Class 1605 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { 1606 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1607 } 1608 1609 KlassHandle klass(THREAD, 1610 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1611 1612 // Make sure class is linked and initialized before handing id's out to 1613 // Method*s. 1614 klass()->initialize(CHECK_NULL); 1615 1616 Method* m; 1617 if (name == vmSymbols::object_initializer_name() || 1618 name == vmSymbols::class_initializer_name()) { 1619 // Never search superclasses for constructors 1620 if (klass->oop_is_instance()) { 1621 m = InstanceKlass::cast(klass())->find_method(name, signature); 1622 } else { 1623 m = NULL; 1624 } 1625 } else { 1626 m = klass->lookup_method(name, signature); 1627 // Look up interfaces 1628 if (m == NULL && klass->oop_is_instance()) { 1629 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name, 1630 signature); 1631 } 1632 } 1633 if (m == NULL || (m->is_static() != is_static)) { 1634 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1635 } 1636 return m->jmethod_id(); 1637 } 1638 1639 1640 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, 1641 const char *name, const char *sig)) 1642 JNIWrapper("GetMethodID"); 1643 #ifndef USDT2 1644 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); 1645 #else /* USDT2 */ 1646 HOTSPOT_JNI_GETMETHODID_ENTRY( 1647 env, clazz, (char *) name, (char *) sig); 1648 #endif /* USDT2 */ 1649 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); 1650 #ifndef USDT2 1651 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); 1652 #else /* USDT2 */ 1653 HOTSPOT_JNI_GETMETHODID_RETURN( 1654 (uintptr_t) ret); 1655 #endif /* USDT2 */ 1656 return ret; 1657 JNI_END 1658 1659 1660 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, 1661 const char *name, const char *sig)) 1662 JNIWrapper("GetStaticMethodID"); 1663 #ifndef USDT2 1664 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); 1665 #else /* USDT2 */ 1666 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY( 1667 env, (char *) clazz, (char *) name, (char *)sig); 1668 #endif /* USDT2 */ 1669 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); 1670 #ifndef USDT2 1671 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); 1672 #else /* USDT2 */ 1673 HOTSPOT_JNI_GETSTATICMETHODID_RETURN( 1674 (uintptr_t) ret); 1675 #endif /* USDT2 */ 1676 return ret; 1677 JNI_END 1678 1679 1680 1681 // 1682 // Calling Methods 1683 // 1684 1685 #ifndef USDT2 1686 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ 1687 \ 1688 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ 1689 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ 1690 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ 1691 \ 1692 JNI_ENTRY(ResultType, \ 1693 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1694 JNIWrapper("Call" XSTR(Result) "Method"); \ 1695 \ 1696 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \ 1697 ResultType ret = 0;\ 1698 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1699 (const ResultType&)ret);\ 1700 \ 1701 va_list args; \ 1702 va_start(args, methodID); \ 1703 JavaValue jvalue(Tag); \ 1704 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1705 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1706 va_end(args); \ 1707 ret = jvalue.get_##ResultType(); \ 1708 return ret;\ 1709 JNI_END \ 1710 \ 1711 \ 1712 JNI_ENTRY(ResultType, \ 1713 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1714 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1715 \ 1716 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \ 1717 ResultType ret = 0;\ 1718 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1719 (const ResultType&)ret);\ 1720 \ 1721 JavaValue jvalue(Tag); \ 1722 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1723 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1724 ret = jvalue.get_##ResultType(); \ 1725 return ret;\ 1726 JNI_END \ 1727 \ 1728 \ 1729 JNI_ENTRY(ResultType, \ 1730 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1731 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1732 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \ 1733 ResultType ret = 0;\ 1734 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1735 (const ResultType&)ret);\ 1736 \ 1737 JavaValue jvalue(Tag); \ 1738 JNI_ArgumentPusherArray ap(methodID, args); \ 1739 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1740 ret = jvalue.get_##ResultType(); \ 1741 return ret;\ 1742 JNI_END 1743 1744 // the runtime type of subword integral basic types is integer 1745 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) 1746 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) 1747 DEFINE_CALLMETHOD(jchar, Char, T_CHAR) 1748 DEFINE_CALLMETHOD(jshort, Short, T_SHORT) 1749 1750 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) 1751 DEFINE_CALLMETHOD(jint, Int, T_INT) 1752 DEFINE_CALLMETHOD(jlong, Long, T_LONG) 1753 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) 1754 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) 1755 1756 DT_VOID_RETURN_MARK_DECL(CallVoidMethod); 1757 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); 1758 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); 1759 1760 #else /* USDT2 */ 1761 1762 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \ 1763 , EntryProbe, ReturnProbe) \ 1764 \ 1765 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \ 1766 , ReturnProbe); \ 1767 \ 1768 JNI_ENTRY(ResultType, \ 1769 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1770 JNIWrapper("Call" XSTR(Result) "Method"); \ 1771 \ 1772 EntryProbe; \ 1773 ResultType ret = 0;\ 1774 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1775 (const ResultType&)ret);\ 1776 \ 1777 va_list args; \ 1778 va_start(args, methodID); \ 1779 JavaValue jvalue(Tag); \ 1780 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1781 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1782 va_end(args); \ 1783 ret = jvalue.get_##ResultType(); \ 1784 return ret;\ 1785 JNI_END 1786 1787 // the runtime type of subword integral basic types is integer 1788 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN 1789 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1790 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1791 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE 1792 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1793 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1794 DEFINE_CALLMETHOD(jchar, Char, T_CHAR 1795 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1796 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1797 DEFINE_CALLMETHOD(jshort, Short, T_SHORT 1798 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1799 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1800 1801 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT 1802 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1803 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1804 DEFINE_CALLMETHOD(jint, Int, T_INT, 1805 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1806 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1807 DEFINE_CALLMETHOD(jlong, Long, T_LONG 1808 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1809 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1810 // Float and double probes don't return value because dtrace doesn't currently support it 1811 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT 1812 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1813 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1814 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE 1815 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1816 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1817 1818 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \ 1819 , EntryProbe, ReturnProbe) \ 1820 \ 1821 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \ 1822 , ReturnProbe); \ 1823 \ 1824 JNI_ENTRY(ResultType, \ 1825 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1826 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1827 \ 1828 EntryProbe;\ 1829 ResultType ret = 0;\ 1830 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1831 (const ResultType&)ret);\ 1832 \ 1833 JavaValue jvalue(Tag); \ 1834 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1835 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1836 ret = jvalue.get_##ResultType(); \ 1837 return ret;\ 1838 JNI_END 1839 1840 // the runtime type of subword integral basic types is integer 1841 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN 1842 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1843 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1844 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE 1845 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1846 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1847 DEFINE_CALLMETHODV(jchar, Char, T_CHAR 1848 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1849 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1850 DEFINE_CALLMETHODV(jshort, Short, T_SHORT 1851 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1852 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1853 1854 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT 1855 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1856 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1857 DEFINE_CALLMETHODV(jint, Int, T_INT, 1858 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1859 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1860 DEFINE_CALLMETHODV(jlong, Long, T_LONG 1861 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1862 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1863 // Float and double probes don't return value because dtrace doesn't currently support it 1864 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT 1865 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1866 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1867 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE 1868 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1869 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1870 1871 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \ 1872 , EntryProbe, ReturnProbe) \ 1873 \ 1874 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \ 1875 , ReturnProbe); \ 1876 \ 1877 JNI_ENTRY(ResultType, \ 1878 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1879 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1880 EntryProbe; \ 1881 ResultType ret = 0;\ 1882 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1883 (const ResultType&)ret);\ 1884 \ 1885 JavaValue jvalue(Tag); \ 1886 JNI_ArgumentPusherArray ap(methodID, args); \ 1887 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1888 ret = jvalue.get_##ResultType(); \ 1889 return ret;\ 1890 JNI_END 1891 1892 // the runtime type of subword integral basic types is integer 1893 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN 1894 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1895 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1896 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE 1897 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1898 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1899 DEFINE_CALLMETHODA(jchar, Char, T_CHAR 1900 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1901 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1902 DEFINE_CALLMETHODA(jshort, Short, T_SHORT 1903 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1904 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1905 1906 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT 1907 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1908 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1909 DEFINE_CALLMETHODA(jint, Int, T_INT, 1910 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1911 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1912 DEFINE_CALLMETHODA(jlong, Long, T_LONG 1913 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1914 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1915 // Float and double probes don't return value because dtrace doesn't currently support it 1916 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT 1917 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1918 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1919 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE 1920 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1921 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1922 1923 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN()); 1924 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN()); 1925 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN()); 1926 1927 #endif /* USDT2 */ 1928 1929 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) 1930 JNIWrapper("CallVoidMethod"); 1931 #ifndef USDT2 1932 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); 1933 #else /* USDT2 */ 1934 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY( 1935 env, obj, (uintptr_t) methodID); 1936 #endif /* USDT2 */ 1937 DT_VOID_RETURN_MARK(CallVoidMethod); 1938 1939 va_list args; 1940 va_start(args, methodID); 1941 JavaValue jvalue(T_VOID); 1942 JNI_ArgumentPusherVaArg ap(methodID, args); 1943 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1944 va_end(args); 1945 JNI_END 1946 1947 1948 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) 1949 JNIWrapper("CallVoidMethodV"); 1950 #ifndef USDT2 1951 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); 1952 #else /* USDT2 */ 1953 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY( 1954 env, obj, (uintptr_t) methodID); 1955 #endif /* USDT2 */ 1956 DT_VOID_RETURN_MARK(CallVoidMethodV); 1957 1958 JavaValue jvalue(T_VOID); 1959 JNI_ArgumentPusherVaArg ap(methodID, args); 1960 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1961 JNI_END 1962 1963 1964 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) 1965 JNIWrapper("CallVoidMethodA"); 1966 #ifndef USDT2 1967 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); 1968 #else /* USDT2 */ 1969 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY( 1970 env, obj, (uintptr_t) methodID); 1971 #endif /* USDT2 */ 1972 DT_VOID_RETURN_MARK(CallVoidMethodA); 1973 1974 JavaValue jvalue(T_VOID); 1975 JNI_ArgumentPusherArray ap(methodID, args); 1976 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1977 JNI_END 1978 1979 1980 #ifndef USDT2 1981 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ 1982 \ 1983 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ 1984 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ 1985 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ 1986 \ 1987 JNI_ENTRY(ResultType, \ 1988 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1989 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1990 \ 1991 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ 1992 ResultType ret;\ 1993 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1994 (const ResultType&)ret);\ 1995 \ 1996 va_list args; \ 1997 va_start(args, methodID); \ 1998 JavaValue jvalue(Tag); \ 1999 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2000 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2001 va_end(args); \ 2002 ret = jvalue.get_##ResultType(); \ 2003 return ret;\ 2004 JNI_END \ 2005 \ 2006 JNI_ENTRY(ResultType, \ 2007 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2008 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ 2009 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ 2010 ResultType ret;\ 2011 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2012 (const ResultType&)ret);\ 2013 \ 2014 JavaValue jvalue(Tag); \ 2015 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2016 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2017 ret = jvalue.get_##ResultType(); \ 2018 return ret;\ 2019 JNI_END \ 2020 \ 2021 JNI_ENTRY(ResultType, \ 2022 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2023 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2024 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ 2025 ResultType ret;\ 2026 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2027 (const ResultType&)ret);\ 2028 \ 2029 JavaValue jvalue(Tag); \ 2030 JNI_ArgumentPusherArray ap(methodID, args); \ 2031 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2032 ret = jvalue.get_##ResultType(); \ 2033 return ret;\ 2034 JNI_END 2035 2036 // the runtime type of subword integral basic types is integer 2037 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) 2038 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) 2039 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) 2040 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) 2041 2042 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) 2043 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) 2044 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) 2045 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) 2046 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) 2047 2048 2049 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); 2050 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); 2051 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); 2052 2053 #else /* USDT2 */ 2054 2055 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \ 2056 , EntryProbe, ReturnProbe) \ 2057 \ 2058 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \ 2059 , ReturnProbe);\ 2060 \ 2061 JNI_ENTRY(ResultType, \ 2062 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 2063 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 2064 \ 2065 EntryProbe;\ 2066 ResultType ret;\ 2067 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 2068 (const ResultType&)ret);\ 2069 \ 2070 va_list args; \ 2071 va_start(args, methodID); \ 2072 JavaValue jvalue(Tag); \ 2073 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2074 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2075 va_end(args); \ 2076 ret = jvalue.get_##ResultType(); \ 2077 return ret;\ 2078 JNI_END 2079 2080 // the runtime type of subword integral basic types is integer 2081 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN 2082 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2083 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref)) 2084 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE 2085 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2086 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref)) 2087 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR 2088 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2089 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref)) 2090 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT 2091 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2092 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref)) 2093 2094 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT 2095 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2096 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref)) 2097 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT 2098 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2099 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref)) 2100 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG 2101 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2102 // Float and double probes don't return value because dtrace doesn't currently support it 2103 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref)) 2104 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT 2105 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2106 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN()) 2107 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE 2108 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2109 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN()) 2110 2111 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \ 2112 , EntryProbe, ReturnProbe) \ 2113 \ 2114 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \ 2115 , ReturnProbe);\ 2116 \ 2117 JNI_ENTRY(ResultType, \ 2118 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2119 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \ 2120 \ 2121 EntryProbe;\ 2122 ResultType ret;\ 2123 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2124 (const ResultType&)ret);\ 2125 \ 2126 JavaValue jvalue(Tag); \ 2127 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2128 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2129 ret = jvalue.get_##ResultType(); \ 2130 return ret;\ 2131 JNI_END 2132 2133 // the runtime type of subword integral basic types is integer 2134 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN 2135 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2136 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref)) 2137 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE 2138 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2139 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref)) 2140 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR 2141 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2142 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref)) 2143 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT 2144 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2145 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref)) 2146 2147 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT 2148 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2149 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref)) 2150 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT 2151 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2152 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref)) 2153 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG 2154 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2155 // Float and double probes don't return value because dtrace doesn't currently support it 2156 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref)) 2157 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT 2158 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2159 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN()) 2160 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE 2161 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2162 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN()) 2163 2164 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \ 2165 , EntryProbe, ReturnProbe) \ 2166 \ 2167 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \ 2168 , ReturnProbe);\ 2169 \ 2170 JNI_ENTRY(ResultType, \ 2171 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2172 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2173 \ 2174 EntryProbe;\ 2175 ResultType ret;\ 2176 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2177 (const ResultType&)ret);\ 2178 \ 2179 JavaValue jvalue(Tag); \ 2180 JNI_ArgumentPusherArray ap(methodID, args); \ 2181 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2182 ret = jvalue.get_##ResultType(); \ 2183 return ret;\ 2184 JNI_END 2185 2186 // the runtime type of subword integral basic types is integer 2187 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN 2188 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2189 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref)) 2190 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE 2191 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2192 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref)) 2193 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR 2194 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2195 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref)) 2196 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT 2197 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2198 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref)) 2199 2200 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT 2201 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2202 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref)) 2203 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT 2204 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2205 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref)) 2206 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG 2207 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2208 // Float and double probes don't return value because dtrace doesn't currently support it 2209 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref)) 2210 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT 2211 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2212 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN()) 2213 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE 2214 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2215 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN()) 2216 2217 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod 2218 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN()); 2219 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV 2220 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN()); 2221 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA 2222 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN()); 2223 #endif /* USDT2 */ 2224 2225 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) 2226 JNIWrapper("CallNonvirtualVoidMethod"); 2227 2228 #ifndef USDT2 2229 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, 2230 env, obj, cls, methodID); 2231 #else /* USDT2 */ 2232 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY( 2233 env, obj, cls, (uintptr_t) methodID); 2234 #endif /* USDT2 */ 2235 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); 2236 2237 va_list args; 2238 va_start(args, methodID); 2239 JavaValue jvalue(T_VOID); 2240 JNI_ArgumentPusherVaArg ap(methodID, args); 2241 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2242 va_end(args); 2243 JNI_END 2244 2245 2246 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) 2247 JNIWrapper("CallNonvirtualVoidMethodV"); 2248 2249 #ifndef USDT2 2250 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, 2251 env, obj, cls, methodID); 2252 #else /* USDT2 */ 2253 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY( 2254 env, obj, cls, (uintptr_t) methodID); 2255 #endif /* USDT2 */ 2256 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); 2257 2258 JavaValue jvalue(T_VOID); 2259 JNI_ArgumentPusherVaArg ap(methodID, args); 2260 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2261 JNI_END 2262 2263 2264 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) 2265 JNIWrapper("CallNonvirtualVoidMethodA"); 2266 #ifndef USDT2 2267 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, 2268 env, obj, cls, methodID); 2269 #else /* USDT2 */ 2270 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY( 2271 env, obj, cls, (uintptr_t) methodID); 2272 #endif /* USDT2 */ 2273 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); 2274 JavaValue jvalue(T_VOID); 2275 JNI_ArgumentPusherArray ap(methodID, args); 2276 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2277 JNI_END 2278 2279 2280 #ifndef USDT2 2281 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ 2282 \ 2283 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ 2284 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ 2285 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ 2286 \ 2287 JNI_ENTRY(ResultType, \ 2288 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2289 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2290 \ 2291 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ 2292 ResultType ret = 0;\ 2293 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2294 (const ResultType&)ret);\ 2295 \ 2296 va_list args; \ 2297 va_start(args, methodID); \ 2298 JavaValue jvalue(Tag); \ 2299 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2300 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2301 va_end(args); \ 2302 ret = jvalue.get_##ResultType(); \ 2303 return ret;\ 2304 JNI_END \ 2305 \ 2306 JNI_ENTRY(ResultType, \ 2307 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2308 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2309 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ 2310 ResultType ret = 0;\ 2311 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2312 (const ResultType&)ret);\ 2313 \ 2314 JavaValue jvalue(Tag); \ 2315 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2316 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2317 ret = jvalue.get_##ResultType(); \ 2318 return ret;\ 2319 JNI_END \ 2320 \ 2321 JNI_ENTRY(ResultType, \ 2322 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2323 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2324 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ 2325 ResultType ret = 0;\ 2326 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2327 (const ResultType&)ret);\ 2328 \ 2329 JavaValue jvalue(Tag); \ 2330 JNI_ArgumentPusherArray ap(methodID, args); \ 2331 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2332 ret = jvalue.get_##ResultType(); \ 2333 return ret;\ 2334 JNI_END 2335 2336 // the runtime type of subword integral basic types is integer 2337 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) 2338 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) 2339 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) 2340 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) 2341 2342 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) 2343 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) 2344 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) 2345 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) 2346 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) 2347 2348 2349 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); 2350 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); 2351 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); 2352 2353 #else /* USDT2 */ 2354 2355 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \ 2356 , EntryProbe, ResultProbe) \ 2357 \ 2358 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \ 2359 , ResultProbe); \ 2360 \ 2361 JNI_ENTRY(ResultType, \ 2362 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2363 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2364 \ 2365 EntryProbe; \ 2366 ResultType ret = 0;\ 2367 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2368 (const ResultType&)ret);\ 2369 \ 2370 va_list args; \ 2371 va_start(args, methodID); \ 2372 JavaValue jvalue(Tag); \ 2373 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2374 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2375 va_end(args); \ 2376 ret = jvalue.get_##ResultType(); \ 2377 return ret;\ 2378 JNI_END 2379 2380 // the runtime type of subword integral basic types is integer 2381 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN 2382 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2383 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref)); 2384 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE 2385 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2386 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref)); 2387 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR 2388 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2389 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref)); 2390 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT 2391 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2392 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref)); 2393 2394 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT 2395 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2396 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref)); 2397 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT 2398 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2399 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref)); 2400 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG 2401 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2402 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref)); 2403 // Float and double probes don't return value because dtrace doesn't currently support it 2404 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT 2405 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2406 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN()); 2407 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE 2408 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2409 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN()); 2410 2411 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \ 2412 , EntryProbe, ResultProbe) \ 2413 \ 2414 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \ 2415 , ResultProbe); \ 2416 \ 2417 JNI_ENTRY(ResultType, \ 2418 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2419 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2420 \ 2421 EntryProbe; \ 2422 ResultType ret = 0;\ 2423 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2424 (const ResultType&)ret);\ 2425 \ 2426 JavaValue jvalue(Tag); \ 2427 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2428 /* Make sure class is initialized before trying to invoke its method */ \ 2429 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \ 2430 k()->initialize(CHECK_0); \ 2431 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2432 va_end(args); \ 2433 ret = jvalue.get_##ResultType(); \ 2434 return ret;\ 2435 JNI_END 2436 2437 // the runtime type of subword integral basic types is integer 2438 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN 2439 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2440 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref)); 2441 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE 2442 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2443 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref)); 2444 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR 2445 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2446 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref)); 2447 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT 2448 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2449 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref)); 2450 2451 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT 2452 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2453 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref)); 2454 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT 2455 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2456 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref)); 2457 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG 2458 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2459 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref)); 2460 // Float and double probes don't return value because dtrace doesn't currently support it 2461 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT 2462 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2463 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN()); 2464 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE 2465 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2466 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN()); 2467 2468 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \ 2469 , EntryProbe, ResultProbe) \ 2470 \ 2471 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \ 2472 , ResultProbe); \ 2473 \ 2474 JNI_ENTRY(ResultType, \ 2475 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2476 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2477 \ 2478 EntryProbe; \ 2479 ResultType ret = 0;\ 2480 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2481 (const ResultType&)ret);\ 2482 \ 2483 JavaValue jvalue(Tag); \ 2484 JNI_ArgumentPusherArray ap(methodID, args); \ 2485 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2486 ret = jvalue.get_##ResultType(); \ 2487 return ret;\ 2488 JNI_END 2489 2490 // the runtime type of subword integral basic types is integer 2491 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN 2492 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2493 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref)); 2494 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE 2495 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2496 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref)); 2497 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR 2498 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2499 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref)); 2500 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT 2501 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2502 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref)); 2503 2504 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT 2505 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2506 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref)); 2507 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT 2508 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2509 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref)); 2510 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG 2511 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2512 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref)); 2513 // Float and double probes don't return value because dtrace doesn't currently support it 2514 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT 2515 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2516 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN()); 2517 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE 2518 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2519 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN()); 2520 2521 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod 2522 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN()); 2523 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV 2524 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN()); 2525 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA 2526 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN()); 2527 #endif /* USDT2 */ 2528 2529 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) 2530 JNIWrapper("CallStaticVoidMethod"); 2531 #ifndef USDT2 2532 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); 2533 #else /* USDT2 */ 2534 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY( 2535 env, cls, (uintptr_t) methodID); 2536 #endif /* USDT2 */ 2537 DT_VOID_RETURN_MARK(CallStaticVoidMethod); 2538 2539 va_list args; 2540 va_start(args, methodID); 2541 JavaValue jvalue(T_VOID); 2542 JNI_ArgumentPusherVaArg ap(methodID, args); 2543 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2544 va_end(args); 2545 JNI_END 2546 2547 2548 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) 2549 JNIWrapper("CallStaticVoidMethodV"); 2550 #ifndef USDT2 2551 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); 2552 #else /* USDT2 */ 2553 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY( 2554 env, cls, (uintptr_t) methodID); 2555 #endif /* USDT2 */ 2556 DT_VOID_RETURN_MARK(CallStaticVoidMethodV); 2557 2558 JavaValue jvalue(T_VOID); 2559 JNI_ArgumentPusherVaArg ap(methodID, args); 2560 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2561 JNI_END 2562 2563 2564 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) 2565 JNIWrapper("CallStaticVoidMethodA"); 2566 #ifndef USDT2 2567 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); 2568 #else /* USDT2 */ 2569 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY( 2570 env, cls, (uintptr_t) methodID); 2571 #endif /* USDT2 */ 2572 DT_VOID_RETURN_MARK(CallStaticVoidMethodA); 2573 2574 JavaValue jvalue(T_VOID); 2575 JNI_ArgumentPusherArray ap(methodID, args); 2576 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2577 JNI_END 2578 2579 2580 // 2581 // Accessing Fields 2582 // 2583 2584 2585 #ifndef USDT2 2586 DT_RETURN_MARK_DECL(GetFieldID, jfieldID); 2587 #else /* USDT2 */ 2588 DT_RETURN_MARK_DECL(GetFieldID, jfieldID 2589 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref)); 2590 #endif /* USDT2 */ 2591 2592 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, 2593 const char *name, const char *sig)) 2594 JNIWrapper("GetFieldID"); 2595 #ifndef USDT2 2596 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); 2597 #else /* USDT2 */ 2598 HOTSPOT_JNI_GETFIELDID_ENTRY( 2599 env, clazz, (char *) name, (char *) sig); 2600 #endif /* USDT2 */ 2601 jfieldID ret = 0; 2602 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); 2603 2604 // The class should have been loaded (we have an instance of the class 2605 // passed in) so the field and signature should already be in the symbol 2606 // table. If they're not there, the field doesn't exist. 2607 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2608 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2609 if (fieldname == NULL || signame == NULL) { 2610 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2611 } 2612 KlassHandle k(THREAD, 2613 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2614 // Make sure class is initialized before handing id's out to fields 2615 k()->initialize(CHECK_NULL); 2616 2617 fieldDescriptor fd; 2618 if (!k()->oop_is_instance() || 2619 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) { 2620 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2621 } 2622 2623 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop 2624 // It may also have hash bits for k, if VerifyJNIFields is turned on. 2625 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); 2626 return ret; 2627 JNI_END 2628 2629 2630 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) 2631 JNIWrapper("GetObjectField"); 2632 #ifndef USDT2 2633 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); 2634 #else /* USDT2 */ 2635 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY( 2636 env, obj, (uintptr_t) fieldID); 2637 #endif /* USDT2 */ 2638 oop o = JNIHandles::resolve_non_null(obj); 2639 Klass* k = o->klass(); 2640 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2641 // Keep JVMTI addition small and only check enabled flag here. 2642 // jni_GetField_probe() assumes that is okay to create handles. 2643 if (JvmtiExport::should_post_field_access()) { 2644 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); 2645 } 2646 jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); 2647 #ifndef SERIALGC 2648 // If G1 is enabled and we are accessing the value of the referent 2649 // field in a reference object then we need to register a non-null 2650 // referent with the SATB barrier. 2651 if (UseG1GC) { 2652 bool needs_barrier = false; 2653 2654 if (ret != NULL && 2655 offset == java_lang_ref_Reference::referent_offset && 2656 InstanceKlass::cast(k)->reference_type() != REF_NONE) { 2657 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); 2658 needs_barrier = true; 2659 } 2660 2661 if (needs_barrier) { 2662 oop referent = JNIHandles::resolve(ret); 2663 G1SATBCardTableModRefBS::enqueue(referent); 2664 } 2665 } 2666 #endif // SERIALGC 2667 #ifndef USDT2 2668 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); 2669 #else /* USDT2 */ 2670 HOTSPOT_JNI_GETOBJECTFIELD_RETURN( 2671 ret); 2672 #endif /* USDT2 */ 2673 return ret; 2674 JNI_END 2675 2676 2677 #ifndef USDT2 2678 #define DEFINE_GETFIELD(Return,Fieldname,Result) \ 2679 \ 2680 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ 2681 \ 2682 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2683 JNIWrapper("Get" XSTR(Result) "Field"); \ 2684 \ 2685 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ 2686 Return ret = 0;\ 2687 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2688 \ 2689 oop o = JNIHandles::resolve_non_null(obj); \ 2690 Klass* k = o->klass(); \ 2691 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2692 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2693 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2694 /* and creates a ResetNoHandleMark. */ \ 2695 if (JvmtiExport::should_post_field_access()) { \ 2696 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2697 } \ 2698 ret = o->Fieldname##_field(offset); \ 2699 return ret; \ 2700 JNI_END 2701 2702 DEFINE_GETFIELD(jboolean, bool, Boolean) 2703 DEFINE_GETFIELD(jbyte, byte, Byte) 2704 DEFINE_GETFIELD(jchar, char, Char) 2705 DEFINE_GETFIELD(jshort, short, Short) 2706 DEFINE_GETFIELD(jint, int, Int) 2707 DEFINE_GETFIELD(jlong, long, Long) 2708 DEFINE_GETFIELD(jfloat, float, Float) 2709 DEFINE_GETFIELD(jdouble, double, Double) 2710 2711 #else /* USDT2 */ 2712 2713 #define DEFINE_GETFIELD(Return,Fieldname,Result \ 2714 , EntryProbe, ReturnProbe) \ 2715 \ 2716 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \ 2717 , ReturnProbe); \ 2718 \ 2719 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2720 JNIWrapper("Get" XSTR(Result) "Field"); \ 2721 \ 2722 EntryProbe; \ 2723 Return ret = 0;\ 2724 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2725 \ 2726 oop o = JNIHandles::resolve_non_null(obj); \ 2727 Klass* k = o->klass(); \ 2728 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2729 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2730 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2731 /* and creates a ResetNoHandleMark. */ \ 2732 if (JvmtiExport::should_post_field_access()) { \ 2733 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2734 } \ 2735 ret = o->Fieldname##_field(offset); \ 2736 return ret; \ 2737 JNI_END 2738 2739 DEFINE_GETFIELD(jboolean, bool, Boolean 2740 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2741 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref)) 2742 DEFINE_GETFIELD(jbyte, byte, Byte 2743 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2744 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref)) 2745 DEFINE_GETFIELD(jchar, char, Char 2746 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2747 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref)) 2748 DEFINE_GETFIELD(jshort, short, Short 2749 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2750 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref)) 2751 DEFINE_GETFIELD(jint, int, Int 2752 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2753 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref)) 2754 DEFINE_GETFIELD(jlong, long, Long 2755 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2756 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref)) 2757 // Float and double probes don't return value because dtrace doesn't currently support it 2758 DEFINE_GETFIELD(jfloat, float, Float 2759 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2760 HOTSPOT_JNI_GETFLOATFIELD_RETURN()) 2761 DEFINE_GETFIELD(jdouble, double, Double 2762 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2763 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN()) 2764 #endif /* USDT2 */ 2765 2766 address jni_GetBooleanField_addr() { 2767 return (address)jni_GetBooleanField; 2768 } 2769 address jni_GetByteField_addr() { 2770 return (address)jni_GetByteField; 2771 } 2772 address jni_GetCharField_addr() { 2773 return (address)jni_GetCharField; 2774 } 2775 address jni_GetShortField_addr() { 2776 return (address)jni_GetShortField; 2777 } 2778 address jni_GetIntField_addr() { 2779 return (address)jni_GetIntField; 2780 } 2781 address jni_GetLongField_addr() { 2782 return (address)jni_GetLongField; 2783 } 2784 address jni_GetFloatField_addr() { 2785 return (address)jni_GetFloatField; 2786 } 2787 address jni_GetDoubleField_addr() { 2788 return (address)jni_GetDoubleField; 2789 } 2790 2791 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) 2792 JNIWrapper("SetObjectField"); 2793 #ifndef USDT2 2794 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); 2795 #else /* USDT2 */ 2796 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY( 2797 env, obj, (uintptr_t) fieldID, value); 2798 #endif /* USDT2 */ 2799 oop o = JNIHandles::resolve_non_null(obj); 2800 Klass* k = o->klass(); 2801 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2802 // Keep JVMTI addition small and only check enabled flag here. 2803 // jni_SetField_probe_nh() assumes that is not okay to create handles 2804 // and creates a ResetNoHandleMark. 2805 if (JvmtiExport::should_post_field_modification()) { 2806 jvalue field_value; 2807 field_value.l = value; 2808 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); 2809 } 2810 o->obj_field_put(offset, JNIHandles::resolve(value)); 2811 #ifndef USDT2 2812 DTRACE_PROBE(hotspot_jni, SetObjectField__return); 2813 #else /* USDT2 */ 2814 HOTSPOT_JNI_SETOBJECTFIELD_RETURN( 2815 ); 2816 #endif /* USDT2 */ 2817 JNI_END 2818 2819 #ifndef USDT2 2820 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ 2821 \ 2822 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2823 JNIWrapper("Set" XSTR(Result) "Field"); \ 2824 \ 2825 FP_SELECT_##Result( \ 2826 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \ 2827 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \ 2828 \ 2829 oop o = JNIHandles::resolve_non_null(obj); \ 2830 Klass* k = o->klass(); \ 2831 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2832 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2833 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2834 /* and creates a ResetNoHandleMark. */ \ 2835 if (JvmtiExport::should_post_field_modification()) { \ 2836 jvalue field_value; \ 2837 field_value.unionType = value; \ 2838 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2839 } \ 2840 o->Fieldname##_field_put(offset, value); \ 2841 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ 2842 JNI_END 2843 2844 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) 2845 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) 2846 DEFINE_SETFIELD(jchar, char, Char, 'C', c) 2847 DEFINE_SETFIELD(jshort, short, Short, 'S', s) 2848 DEFINE_SETFIELD(jint, int, Int, 'I', i) 2849 DEFINE_SETFIELD(jlong, long, Long, 'J', j) 2850 DEFINE_SETFIELD(jfloat, float, Float, 'F', f) 2851 DEFINE_SETFIELD(jdouble, double, Double, 'D', d) 2852 2853 #else /* USDT2 */ 2854 2855 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \ 2856 , EntryProbe, ReturnProbe) \ 2857 \ 2858 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2859 JNIWrapper("Set" XSTR(Result) "Field"); \ 2860 \ 2861 EntryProbe; \ 2862 \ 2863 oop o = JNIHandles::resolve_non_null(obj); \ 2864 Klass* k = o->klass(); \ 2865 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2866 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2867 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2868 /* and creates a ResetNoHandleMark. */ \ 2869 if (JvmtiExport::should_post_field_modification()) { \ 2870 jvalue field_value; \ 2871 field_value.unionType = value; \ 2872 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2873 } \ 2874 o->Fieldname##_field_put(offset, value); \ 2875 ReturnProbe; \ 2876 JNI_END 2877 2878 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z 2879 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2880 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 2881 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b 2882 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2883 HOTSPOT_JNI_SETBYTEFIELD_RETURN()) 2884 DEFINE_SETFIELD(jchar, char, Char, 'C', c 2885 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2886 HOTSPOT_JNI_SETCHARFIELD_RETURN()) 2887 DEFINE_SETFIELD(jshort, short, Short, 'S', s 2888 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2889 HOTSPOT_JNI_SETSHORTFIELD_RETURN()) 2890 DEFINE_SETFIELD(jint, int, Int, 'I', i 2891 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2892 HOTSPOT_JNI_SETINTFIELD_RETURN()) 2893 DEFINE_SETFIELD(jlong, long, Long, 'J', j 2894 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2895 HOTSPOT_JNI_SETLONGFIELD_RETURN()) 2896 // Float and double probes don't return value because dtrace doesn't currently support it 2897 DEFINE_SETFIELD(jfloat, float, Float, 'F', f 2898 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2899 HOTSPOT_JNI_SETFLOATFIELD_RETURN()) 2900 DEFINE_SETFIELD(jdouble, double, Double, 'D', d 2901 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2902 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN()) 2903 #endif /* USDT2 */ 2904 2905 #ifndef USDT2 2906 DT_RETURN_MARK_DECL(ToReflectedField, jobject); 2907 #else /* USDT2 */ 2908 DT_RETURN_MARK_DECL(ToReflectedField, jobject 2909 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref)); 2910 #endif /* USDT2 */ 2911 2912 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) 2913 JNIWrapper("ToReflectedField"); 2914 #ifndef USDT2 2915 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, 2916 env, cls, fieldID, isStatic); 2917 #else /* USDT2 */ 2918 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY( 2919 env, cls, (uintptr_t) fieldID, isStatic); 2920 #endif /* USDT2 */ 2921 jobject ret = NULL; 2922 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); 2923 2924 fieldDescriptor fd; 2925 bool found = false; 2926 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); 2927 2928 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); 2929 2930 if (isStatic) { 2931 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*. 2932 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2933 assert(id->is_static_field_id(), "invalid static field id"); 2934 found = id->find_local_field(&fd); 2935 } else { 2936 // Non-static field. The fieldID is really the offset of the field within the instanceOop. 2937 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2938 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); 2939 } 2940 assert(found, "bad fieldID passed into jni_ToReflectedField"); 2941 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); 2942 ret = JNIHandles::make_local(env, reflected); 2943 return ret; 2944 JNI_END 2945 2946 2947 // 2948 // Accessing Static Fields 2949 // 2950 #ifndef USDT2 2951 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); 2952 #else /* USDT2 */ 2953 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID 2954 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref)); 2955 #endif /* USDT2 */ 2956 2957 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, 2958 const char *name, const char *sig)) 2959 JNIWrapper("GetStaticFieldID"); 2960 #ifndef USDT2 2961 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); 2962 #else /* USDT2 */ 2963 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY( 2964 env, clazz, (char *) name, (char *) sig); 2965 #endif /* USDT2 */ 2966 jfieldID ret = NULL; 2967 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); 2968 2969 // The class should have been loaded (we have an instance of the class 2970 // passed in) so the field and signature should already be in the symbol 2971 // table. If they're not there, the field doesn't exist. 2972 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2973 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2974 if (fieldname == NULL || signame == NULL) { 2975 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2976 } 2977 KlassHandle k(THREAD, 2978 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2979 // Make sure class is initialized before handing id's out to static fields 2980 k()->initialize(CHECK_NULL); 2981 2982 fieldDescriptor fd; 2983 if (!k()->oop_is_instance() || 2984 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) { 2985 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2986 } 2987 2988 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 2989 JNIid* id = fd.field_holder()->jni_id_for(fd.offset()); 2990 debug_only(id->set_is_static_field_id();) 2991 2992 debug_only(id->verify(fd.field_holder())); 2993 2994 ret = jfieldIDWorkaround::to_static_jfieldID(id); 2995 return ret; 2996 JNI_END 2997 2998 2999 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) 3000 JNIWrapper("GetStaticObjectField"); 3001 #ifndef USDT2 3002 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); 3003 #else /* USDT2 */ 3004 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY( 3005 env, clazz, (uintptr_t) fieldID); 3006 #endif /* USDT2 */ 3007 #if INCLUDE_JNI_CHECK 3008 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);) 3009 #endif // INCLUDE_JNI_CHECK 3010 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3011 assert(id->is_static_field_id(), "invalid static field id"); 3012 // Keep JVMTI addition small and only check enabled flag here. 3013 // jni_GetField_probe() assumes that is okay to create handles. 3014 if (JvmtiExport::should_post_field_access()) { 3015 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); 3016 } 3017 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset())); 3018 #ifndef USDT2 3019 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); 3020 #else /* USDT2 */ 3021 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN( 3022 ret); 3023 #endif /* USDT2 */ 3024 return ret; 3025 JNI_END 3026 3027 #ifndef USDT2 3028 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ 3029 \ 3030 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ 3031 \ 3032 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3033 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3034 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ 3035 Return ret = 0;\ 3036 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3037 (const Return&)ret);\ 3038 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3039 assert(id->is_static_field_id(), "invalid static field id"); \ 3040 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3041 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3042 if (JvmtiExport::should_post_field_access()) { \ 3043 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3044 } \ 3045 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3046 return ret;\ 3047 JNI_END 3048 3049 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) 3050 DEFINE_GETSTATICFIELD(jbyte, byte, Byte) 3051 DEFINE_GETSTATICFIELD(jchar, char, Char) 3052 DEFINE_GETSTATICFIELD(jshort, short, Short) 3053 DEFINE_GETSTATICFIELD(jint, int, Int) 3054 DEFINE_GETSTATICFIELD(jlong, long, Long) 3055 DEFINE_GETSTATICFIELD(jfloat, float, Float) 3056 DEFINE_GETSTATICFIELD(jdouble, double, Double) 3057 3058 #else /* USDT2 */ 3059 3060 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \ 3061 , EntryProbe, ReturnProbe) \ 3062 \ 3063 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \ 3064 , ReturnProbe); \ 3065 \ 3066 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3067 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3068 EntryProbe; \ 3069 Return ret = 0;\ 3070 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3071 (const Return&)ret);\ 3072 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3073 assert(id->is_static_field_id(), "invalid static field id"); \ 3074 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3075 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3076 if (JvmtiExport::should_post_field_access()) { \ 3077 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3078 } \ 3079 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3080 return ret;\ 3081 JNI_END 3082 3083 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean 3084 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref)) 3085 DEFINE_GETSTATICFIELD(jbyte, byte, Byte 3086 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) ) 3087 DEFINE_GETSTATICFIELD(jchar, char, Char 3088 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) ) 3089 DEFINE_GETSTATICFIELD(jshort, short, Short 3090 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) ) 3091 DEFINE_GETSTATICFIELD(jint, int, Int 3092 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) ) 3093 DEFINE_GETSTATICFIELD(jlong, long, Long 3094 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) ) 3095 // Float and double probes don't return value because dtrace doesn't currently support it 3096 DEFINE_GETSTATICFIELD(jfloat, float, Float 3097 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() ) 3098 DEFINE_GETSTATICFIELD(jdouble, double, Double 3099 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() ) 3100 #endif /* USDT2 */ 3101 3102 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) 3103 JNIWrapper("SetStaticObjectField"); 3104 #ifndef USDT2 3105 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); 3106 #else /* USDT2 */ 3107 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY( 3108 env, clazz, (uintptr_t) fieldID, value); 3109 #endif /* USDT2 */ 3110 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3111 assert(id->is_static_field_id(), "invalid static field id"); 3112 // Keep JVMTI addition small and only check enabled flag here. 3113 // jni_SetField_probe() assumes that is okay to create handles. 3114 if (JvmtiExport::should_post_field_modification()) { 3115 jvalue field_value; 3116 field_value.l = value; 3117 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); 3118 } 3119 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value)); 3120 #ifndef USDT2 3121 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); 3122 #else /* USDT2 */ 3123 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN( 3124 ); 3125 #endif /* USDT2 */ 3126 JNI_END 3127 3128 3129 #ifndef USDT2 3130 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ 3131 \ 3132 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3133 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3134 FP_SELECT_##Result( \ 3135 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \ 3136 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \ 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 = 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 = 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 = 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(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(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 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", 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 (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 NOT_PRODUCT(if (ReplayCompiles) ciReplay::replay(thread);) 5156 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. 5157 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5158 } else { 5159 if (can_try_again) { 5160 // reset safe_to_recreate_vm to 1 so that retrial would be possible 5161 safe_to_recreate_vm = 1; 5162 } 5163 5164 // Creation failed. We must reset vm_created 5165 *vm = 0; 5166 *(JNIEnv**)penv = 0; 5167 // reset vm_created last to avoid race condition. Use OrderAccess to 5168 // control both compiler and architectural-based reordering. 5169 OrderAccess::release_store(&vm_created, 0); 5170 } 5171 5172 NOT_PRODUCT(test_error_handler(ErrorHandlerTest)); 5173 NOT_PRODUCT(execute_internal_vm_tests()); 5174 return result; 5175 } 5176 5177 #ifndef USDT2 5178 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5179 JavaVM**, jsize, jsize*); 5180 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); 5181 #endif /* !USDT2 */ 5182 5183 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { 5184 // See bug 4367188, the wrapper can sometimes cause VM crashes 5185 // JNIWrapper("GetCreatedJavaVMs"); 5186 #ifndef USDT2 5187 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5188 vm_buf, bufLen, numVMs); 5189 #else /* USDT2 */ 5190 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY( 5191 (void **) vm_buf, bufLen, (uintptr_t *) numVMs); 5192 #endif /* USDT2 */ 5193 if (vm_created) { 5194 if (numVMs != NULL) *numVMs = 1; 5195 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); 5196 } else { 5197 if (numVMs != NULL) *numVMs = 0; 5198 } 5199 #ifndef USDT2 5200 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); 5201 #else /* USDT2 */ 5202 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN( 5203 JNI_OK); 5204 #endif /* USDT2 */ 5205 return JNI_OK; 5206 } 5207 5208 extern "C" { 5209 5210 #ifndef USDT2 5211 DT_RETURN_MARK_DECL(DestroyJavaVM, jint); 5212 #else /* USDT2 */ 5213 DT_RETURN_MARK_DECL(DestroyJavaVM, jint 5214 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref)); 5215 #endif /* USDT2 */ 5216 5217 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { 5218 #ifndef USDT2 5219 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); 5220 #else /* USDT2 */ 5221 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY( 5222 vm); 5223 #endif /* USDT2 */ 5224 jint res = JNI_ERR; 5225 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); 5226 5227 if (!vm_created) { 5228 res = JNI_ERR; 5229 return res; 5230 } 5231 5232 JNIWrapper("DestroyJavaVM"); 5233 JNIEnv *env; 5234 JavaVMAttachArgs destroyargs; 5235 destroyargs.version = CurrentVersion; 5236 destroyargs.name = (char *)"DestroyJavaVM"; 5237 destroyargs.group = NULL; 5238 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); 5239 if (res != JNI_OK) { 5240 return res; 5241 } 5242 5243 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. 5244 JavaThread* thread = JavaThread::current(); 5245 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5246 if (Threads::destroy_vm()) { 5247 // Should not change thread state, VM is gone 5248 vm_created = false; 5249 res = JNI_OK; 5250 return res; 5251 } else { 5252 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5253 res = JNI_ERR; 5254 return res; 5255 } 5256 } 5257 5258 5259 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { 5260 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; 5261 5262 // Check below commented out from JDK1.2fcs as well 5263 /* 5264 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { 5265 return JNI_EVERSION; 5266 } 5267 */ 5268 5269 Thread* t = ThreadLocalStorage::get_thread_slow(); 5270 if (t != NULL) { 5271 // If the thread has been attached this operation is a no-op 5272 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); 5273 return JNI_OK; 5274 } 5275 5276 // Create a thread and mark it as attaching so it will be skipped by the 5277 // ThreadsListEnumerator - see CR 6404306 5278 JavaThread* thread = new JavaThread(true); 5279 5280 // Set correct safepoint info. The thread is going to call into Java when 5281 // initializing the Java level thread object. Hence, the correct state must 5282 // be set in order for the Safepoint code to deal with it correctly. 5283 thread->set_thread_state(_thread_in_vm); 5284 // Must do this before initialize_thread_local_storage 5285 thread->record_stack_base_and_size(); 5286 5287 thread->initialize_thread_local_storage(); 5288 5289 if (!os::create_attached_thread(thread)) { 5290 delete thread; 5291 return JNI_ERR; 5292 } 5293 // Enable stack overflow checks 5294 thread->create_stack_guard_pages(); 5295 5296 thread->initialize_tlab(); 5297 5298 thread->cache_global_variables(); 5299 5300 // Crucial that we do not have a safepoint check for this thread, since it has 5301 // not been added to the Thread list yet. 5302 { Threads_lock->lock_without_safepoint_check(); 5303 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to 5304 // avoid this thread trying to do a GC before it is added to the thread-list 5305 thread->set_active_handles(JNIHandleBlock::allocate_block()); 5306 Threads::add(thread, daemon); 5307 Threads_lock->unlock(); 5308 } 5309 // Create thread group and name info from attach arguments 5310 oop group = NULL; 5311 char* thread_name = NULL; 5312 if (args != NULL && Threads::is_supported_jni_version(args->version)) { 5313 group = JNIHandles::resolve(args->group); 5314 thread_name = args->name; // may be NULL 5315 } 5316 if (group == NULL) group = Universe::main_thread_group(); 5317 5318 // Create Java level thread object and attach it to this thread 5319 bool attach_failed = false; 5320 { 5321 EXCEPTION_MARK; 5322 HandleMark hm(THREAD); 5323 Handle thread_group(THREAD, group); 5324 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); 5325 if (HAS_PENDING_EXCEPTION) { 5326 CLEAR_PENDING_EXCEPTION; 5327 // cleanup outside the handle mark. 5328 attach_failed = true; 5329 } 5330 } 5331 5332 if (attach_failed) { 5333 // Added missing cleanup 5334 thread->cleanup_failed_attach_current_thread(); 5335 return JNI_ERR; 5336 } 5337 5338 // mark the thread as no longer attaching 5339 // this uses a fence to push the change through so we don't have 5340 // to regrab the threads_lock 5341 thread->set_done_attaching_via_jni(); 5342 5343 // Set java thread status. 5344 java_lang_Thread::set_thread_status(thread->threadObj(), 5345 java_lang_Thread::RUNNABLE); 5346 5347 // Notify the debugger 5348 if (JvmtiExport::should_post_thread_life()) { 5349 JvmtiExport::post_thread_start(thread); 5350 } 5351 5352 EVENT_BEGIN(TraceEventThreadStart, event); 5353 EVENT_COMMIT(event, 5354 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj()))); 5355 5356 *(JNIEnv**)penv = thread->jni_environment(); 5357 5358 // Now leaving the VM, so change thread_state. This is normally automatically taken care 5359 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by 5360 // using ThreadStateTransition::transition, we do a callback to the safepoint code if 5361 // needed. 5362 5363 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5364 5365 // Perform any platform dependent FPU setup 5366 os::setup_fpu(); 5367 5368 return JNI_OK; 5369 } 5370 5371 5372 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { 5373 #ifndef USDT2 5374 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); 5375 #else /* USDT2 */ 5376 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY( 5377 vm, penv, _args); 5378 #endif /* USDT2 */ 5379 if (!vm_created) { 5380 #ifndef USDT2 5381 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); 5382 #else /* USDT2 */ 5383 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5384 (uint32_t) JNI_ERR); 5385 #endif /* USDT2 */ 5386 return JNI_ERR; 5387 } 5388 5389 JNIWrapper("AttachCurrentThread"); 5390 jint ret = attach_current_thread(vm, penv, _args, false); 5391 #ifndef USDT2 5392 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); 5393 #else /* USDT2 */ 5394 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5395 ret); 5396 #endif /* USDT2 */ 5397 return ret; 5398 } 5399 5400 5401 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { 5402 #ifndef USDT2 5403 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); 5404 #else /* USDT2 */ 5405 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY( 5406 vm); 5407 #endif /* USDT2 */ 5408 VM_Exit::block_if_vm_exited(); 5409 5410 JNIWrapper("DetachCurrentThread"); 5411 5412 // If the thread has been deattacted the operations is a no-op 5413 if (ThreadLocalStorage::thread() == NULL) { 5414 #ifndef USDT2 5415 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5416 #else /* USDT2 */ 5417 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5418 JNI_OK); 5419 #endif /* USDT2 */ 5420 return JNI_OK; 5421 } 5422 5423 JavaThread* thread = JavaThread::current(); 5424 if (thread->has_last_Java_frame()) { 5425 #ifndef USDT2 5426 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); 5427 #else /* USDT2 */ 5428 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5429 (uint32_t) JNI_ERR); 5430 #endif /* USDT2 */ 5431 // Can't detach a thread that's running java, that can't work. 5432 return JNI_ERR; 5433 } 5434 5435 // Safepoint support. Have to do call-back to safepoint code, if in the 5436 // middel of a safepoint operation 5437 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5438 5439 // XXX: Note that JavaThread::exit() call below removes the guards on the 5440 // stack pages set up via enable_stack_{red,yellow}_zone() calls 5441 // above in jni_AttachCurrentThread. Unfortunately, while the setting 5442 // of the guards is visible in jni_AttachCurrentThread above, 5443 // the removal of the guards is buried below in JavaThread::exit() 5444 // here. The abstraction should be more symmetrically either exposed 5445 // or hidden (e.g. it could probably be hidden in the same 5446 // (platform-dependent) methods where we do alternate stack 5447 // maintenance work?) 5448 thread->exit(false, JavaThread::jni_detach); 5449 delete thread; 5450 5451 #ifndef USDT2 5452 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5453 #else /* USDT2 */ 5454 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5455 JNI_OK); 5456 #endif /* USDT2 */ 5457 return JNI_OK; 5458 } 5459 5460 #ifndef USDT2 5461 DT_RETURN_MARK_DECL(GetEnv, jint); 5462 #else /* USDT2 */ 5463 DT_RETURN_MARK_DECL(GetEnv, jint 5464 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref)); 5465 #endif /* USDT2 */ 5466 5467 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { 5468 #ifndef USDT2 5469 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); 5470 #else /* USDT2 */ 5471 HOTSPOT_JNI_GETENV_ENTRY( 5472 vm, penv, version); 5473 #endif /* USDT2 */ 5474 jint ret = JNI_ERR; 5475 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); 5476 5477 if (!vm_created) { 5478 *penv = NULL; 5479 ret = JNI_EDETACHED; 5480 return ret; 5481 } 5482 5483 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) { 5484 return ret; 5485 } 5486 5487 #ifndef JVMPI_VERSION_1 5488 // need these in order to be polite about older agents 5489 #define JVMPI_VERSION_1 ((jint)0x10000001) 5490 #define JVMPI_VERSION_1_1 ((jint)0x10000002) 5491 #define JVMPI_VERSION_1_2 ((jint)0x10000003) 5492 #endif // !JVMPI_VERSION_1 5493 5494 Thread* thread = ThreadLocalStorage::thread(); 5495 if (thread != NULL && thread->is_Java_thread()) { 5496 if (Threads::is_supported_jni_version_including_1_1(version)) { 5497 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); 5498 ret = JNI_OK; 5499 return ret; 5500 5501 } else if (version == JVMPI_VERSION_1 || 5502 version == JVMPI_VERSION_1_1 || 5503 version == JVMPI_VERSION_1_2) { 5504 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); 5505 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5506 ret = JNI_EVERSION; 5507 return ret; 5508 } else if (JvmtiExport::is_jvmdi_version(version)) { 5509 tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); 5510 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5511 ret = JNI_EVERSION; 5512 return ret; 5513 } else { 5514 *penv = NULL; 5515 ret = JNI_EVERSION; 5516 return ret; 5517 } 5518 } else { 5519 *penv = NULL; 5520 ret = JNI_EDETACHED; 5521 return ret; 5522 } 5523 } 5524 5525 5526 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { 5527 #ifndef USDT2 5528 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); 5529 #else /* USDT2 */ 5530 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY( 5531 vm, penv, _args); 5532 #endif /* USDT2 */ 5533 if (!vm_created) { 5534 #ifndef USDT2 5535 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); 5536 #else /* USDT2 */ 5537 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5538 (uint32_t) JNI_ERR); 5539 #endif /* USDT2 */ 5540 return JNI_ERR; 5541 } 5542 5543 JNIWrapper("AttachCurrentThreadAsDaemon"); 5544 jint ret = attach_current_thread(vm, penv, _args, true); 5545 #ifndef USDT2 5546 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); 5547 #else /* USDT2 */ 5548 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5549 ret); 5550 #endif /* USDT2 */ 5551 return ret; 5552 } 5553 5554 5555 } // End extern "C" 5556 5557 const struct JNIInvokeInterface_ jni_InvokeInterface = { 5558 NULL, 5559 NULL, 5560 NULL, 5561 5562 jni_DestroyJavaVM, 5563 jni_AttachCurrentThread, 5564 jni_DetachCurrentThread, 5565 jni_GetEnv, 5566 jni_AttachCurrentThreadAsDaemon 5567 };