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