1 /* 2 * Copyright (c) 1997, 2018, 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/orderAccess.inline.hpp" 71 #include "runtime/reflection.hpp" 72 #include "runtime/sharedRuntime.hpp" 73 #include "runtime/signature.hpp" 74 #include "runtime/thread.inline.hpp" 75 #include "runtime/vm_operations.hpp" 76 #include "services/memTracker.hpp" 77 #include "services/runtimeService.hpp" 78 #include "trace/tracing.hpp" 79 #include "utilities/defaultStream.hpp" 80 #include "utilities/dtrace.hpp" 81 #include "utilities/events.hpp" 82 #include "utilities/histogram.hpp" 83 #ifdef TARGET_OS_FAMILY_linux 84 # include "os_linux.inline.hpp" 85 #endif 86 #ifdef TARGET_OS_FAMILY_solaris 87 # include "os_solaris.inline.hpp" 88 #endif 89 #ifdef TARGET_OS_FAMILY_windows 90 # include "os_windows.inline.hpp" 91 #endif 92 #ifdef TARGET_OS_FAMILY_bsd 93 # include "os_bsd.inline.hpp" 94 #endif 95 96 static jint CurrentVersion = JNI_VERSION_1_8; 97 98 99 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace 100 // '-return' probe regardless of the return path is taken out of the function. 101 // Methods that have multiple return paths use this to avoid having to 102 // instrument each return path. Methods that use CHECK or THROW must use this 103 // since those macros can cause an immedate uninstrumented return. 104 // 105 // In order to get the return value, a reference to the variable containing 106 // the return value must be passed to the contructor of the object, and 107 // the return value must be set before return (since the mark object has 108 // a reference to it). 109 // 110 // Example: 111 // DT_RETURN_MARK_DECL(SomeFunc, int); 112 // JNI_ENTRY(int, SomeFunc, ...) 113 // int return_value = 0; 114 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); 115 // foo(CHECK_0) 116 // return_value = 5; 117 // return return_value; 118 // JNI_END 119 #ifndef USDT2 120 #define DT_RETURN_MARK_DECL(name, type) \ 121 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ 122 DTRACE_ONLY( \ 123 class DTraceReturnProbeMark_##name { \ 124 public: \ 125 const type& _ret_ref; \ 126 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 127 ~DTraceReturnProbeMark_##name() { \ 128 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ 129 } \ 130 } \ 131 ) 132 // Void functions are simpler since there's no return value 133 #define DT_VOID_RETURN_MARK_DECL(name) \ 134 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ 135 DTRACE_ONLY( \ 136 class DTraceReturnProbeMark_##name { \ 137 public: \ 138 ~DTraceReturnProbeMark_##name() { \ 139 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ 140 } \ 141 } \ 142 ) 143 144 #else /* USDT2 */ 145 146 #define DT_RETURN_MARK_DECL(name, type, probe) \ 147 DTRACE_ONLY( \ 148 class DTraceReturnProbeMark_##name { \ 149 public: \ 150 const type& _ret_ref; \ 151 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 152 ~DTraceReturnProbeMark_##name() { \ 153 probe; \ 154 } \ 155 } \ 156 ) 157 // Void functions are simpler since there's no return value 158 #define DT_VOID_RETURN_MARK_DECL(name, probe) \ 159 DTRACE_ONLY( \ 160 class DTraceReturnProbeMark_##name { \ 161 public: \ 162 ~DTraceReturnProbeMark_##name() { \ 163 probe; \ 164 } \ 165 } \ 166 ) 167 #endif /* USDT2 */ 168 169 // Place these macros in the function to mark the return. Non-void 170 // functions need the type and address of the return value. 171 #define DT_RETURN_MARK(name, type, ref) \ 172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) 173 #define DT_VOID_RETURN_MARK(name) \ 174 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) 175 176 177 // Use these to select distinct code for floating-point vs. non-floating point 178 // situations. Used from within common macros where we need slightly 179 // different behavior for Float/Double 180 #define FP_SELECT_Boolean(intcode, fpcode) intcode 181 #define FP_SELECT_Byte(intcode, fpcode) intcode 182 #define FP_SELECT_Char(intcode, fpcode) intcode 183 #define FP_SELECT_Short(intcode, fpcode) intcode 184 #define FP_SELECT_Object(intcode, fpcode) intcode 185 #define FP_SELECT_Int(intcode, fpcode) intcode 186 #define FP_SELECT_Long(intcode, fpcode) intcode 187 #define FP_SELECT_Float(intcode, fpcode) fpcode 188 #define FP_SELECT_Double(intcode, fpcode) fpcode 189 #define FP_SELECT(TypeName, intcode, fpcode) \ 190 FP_SELECT_##TypeName(intcode, fpcode) 191 192 #define COMMA , 193 194 // Choose DT_RETURN_MARK macros based on the type: float/double -> void 195 // (dtrace doesn't do FP yet) 196 #ifndef USDT2 197 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ 198 FP_SELECT(TypeName, \ 199 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) 200 #else /* USDT2 */ 201 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \ 202 FP_SELECT(TypeName, \ 203 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) ) 204 #endif /* USDT2 */ 205 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ 206 FP_SELECT(TypeName, \ 207 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) 208 209 210 // out-of-line helpers for class jfieldIDWorkaround: 211 212 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) { 213 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { 214 uintptr_t as_uint = (uintptr_t) id; 215 intptr_t offset = raw_instance_offset(id); 216 if (is_checked_jfieldID(id)) { 217 if (!klass_hash_ok(k, id)) { 218 return false; 219 } 220 } 221 return InstanceKlass::cast(k)->contains_field_offset(offset); 222 } else { 223 JNIid* result = (JNIid*) id; 224 #ifdef ASSERT 225 return result != NULL && result->is_static_field_id(); 226 #else 227 return result != NULL; 228 #endif 229 } 230 } 231 232 233 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) { 234 if (offset <= small_offset_mask) { 235 Klass* field_klass = k; 236 Klass* super_klass = field_klass->super(); 237 // With compressed oops the most super class with nonstatic fields would 238 // be the owner of fields embedded in the header. 239 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() && 240 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) { 241 field_klass = super_klass; // super contains the field also 242 super_klass = field_klass->super(); 243 } 244 debug_only(No_Safepoint_Verifier nosafepoint;) 245 uintptr_t klass_hash = field_klass->identity_hash(); 246 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; 247 } else { 248 #if 0 249 #ifndef PRODUCT 250 { 251 ResourceMark rm; 252 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name()); 253 } 254 #endif 255 #endif 256 return 0; 257 } 258 } 259 260 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) { 261 uintptr_t as_uint = (uintptr_t) id; 262 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; 263 do { 264 debug_only(No_Safepoint_Verifier nosafepoint;) 265 // Could use a non-blocking query for identity_hash here... 266 if ((k->identity_hash() & klass_mask) == klass_hash) 267 return true; 268 k = k->super(); 269 } while (k != NULL); 270 return false; 271 } 272 273 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) { 274 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); 275 uintptr_t as_uint = (uintptr_t) id; 276 intptr_t offset = raw_instance_offset(id); 277 if (VerifyJNIFields) { 278 if (is_checked_jfieldID(id)) { 279 guarantee(klass_hash_ok(k, id), 280 "Bug in native code: jfieldID class must match object"); 281 } else { 282 #if 0 283 #ifndef PRODUCT 284 if (Verbose) { 285 ResourceMark rm; 286 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name()); 287 } 288 #endif 289 #endif 290 } 291 } 292 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset), 293 "Bug in native code: jfieldID offset must address interior of object"); 294 } 295 296 // Wrapper to trace JNI functions 297 298 #ifdef ASSERT 299 Histogram* JNIHistogram; 300 static volatile jint JNIHistogram_lock = 0; 301 302 class JNITraceWrapper : public StackObj { 303 public: 304 JNITraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { 305 if (TraceJNICalls) { 306 va_list ap; 307 va_start(ap, format); 308 tty->print("JNI "); 309 tty->vprint_cr(format, ap); 310 va_end(ap); 311 } 312 } 313 }; 314 315 class JNIHistogramElement : public HistogramElement { 316 public: 317 JNIHistogramElement(const char* name); 318 }; 319 320 JNIHistogramElement::JNIHistogramElement(const char* elementName) { 321 _name = elementName; 322 uintx count = 0; 323 324 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { 325 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { 326 count +=1; 327 if ( (WarnOnStalledSpinLock > 0) 328 && (count % WarnOnStalledSpinLock == 0)) { 329 warning("JNIHistogram_lock seems to be stalled"); 330 } 331 } 332 } 333 334 335 if(JNIHistogram == NULL) 336 JNIHistogram = new Histogram("JNI Call Counts",100); 337 338 JNIHistogram->add_element(this); 339 Atomic::dec(&JNIHistogram_lock); 340 } 341 342 #define JNICountWrapper(arg) \ 343 static JNIHistogramElement* e = new JNIHistogramElement(arg); \ 344 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ 345 if (e != NULL) e->increment_count() 346 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) 347 #else 348 #define JNIWrapper(arg) 349 #endif 350 351 352 // Implementation of JNI entries 353 354 #ifndef USDT2 355 DT_RETURN_MARK_DECL(DefineClass, jclass); 356 #else /* USDT2 */ 357 DT_RETURN_MARK_DECL(DefineClass, jclass 358 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref)); 359 #endif /* USDT2 */ 360 361 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, 362 const jbyte *buf, jsize bufLen)) 363 JNIWrapper("DefineClass"); 364 365 #ifndef USDT2 366 DTRACE_PROBE5(hotspot_jni, DefineClass__entry, 367 env, name, loaderRef, buf, bufLen); 368 #else /* USDT2 */ 369 HOTSPOT_JNI_DEFINECLASS_ENTRY( 370 env, (char*) name, loaderRef, (char*) buf, bufLen); 371 #endif /* USDT2 */ 372 jclass cls = NULL; 373 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); 374 375 TempNewSymbol class_name = NULL; 376 // Since exceptions can be thrown, class initialization can take place 377 // if name is NULL no check for class name in .class stream has to be made. 378 if (name != NULL) { 379 const int str_len = (int)strlen(name); 380 if (str_len > Symbol::max_length()) { 381 // It's impossible to create this class; the name cannot fit 382 // into the constant pool. 383 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 384 } 385 class_name = SymbolTable::new_symbol(name, CHECK_NULL); 386 } 387 ResourceMark rm(THREAD); 388 ClassFileStream st((u1*) buf, bufLen, NULL); 389 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); 390 391 if (UsePerfData && !class_loader.is_null()) { 392 // check whether the current caller thread holds the lock or not. 393 // If not, increment the corresponding counter 394 if (ObjectSynchronizer:: 395 query_lock_ownership((JavaThread*)THREAD, class_loader) != 396 ObjectSynchronizer::owner_self) { 397 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); 398 } 399 } 400 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, 401 Handle(), &st, true, 402 CHECK_NULL); 403 404 if (TraceClassResolution && k != NULL) { 405 trace_class_resolution(k); 406 } 407 408 cls = (jclass)JNIHandles::make_local( 409 env, k->java_mirror()); 410 return cls; 411 JNI_END 412 413 414 415 static bool first_time_FindClass = true; 416 417 #ifndef USDT2 418 DT_RETURN_MARK_DECL(FindClass, jclass); 419 #else /* USDT2 */ 420 DT_RETURN_MARK_DECL(FindClass, jclass 421 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref)); 422 #endif /* USDT2 */ 423 424 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) 425 JNIWrapper("FindClass"); 426 #ifndef USDT2 427 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); 428 #else /* USDT2 */ 429 HOTSPOT_JNI_FINDCLASS_ENTRY( 430 env, (char *)name); 431 #endif /* USDT2 */ 432 433 jclass result = NULL; 434 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); 435 436 // Remember if we are the first invocation of jni_FindClass 437 bool first_time = first_time_FindClass; 438 first_time_FindClass = false; 439 440 // Sanity check the name: it cannot be null or larger than the maximum size 441 // name we can fit in the constant pool. 442 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { 443 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 444 } 445 446 //%note jni_3 447 Handle loader; 448 Handle protection_domain; 449 // Find calling class 450 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); 451 if (k.not_null()) { 452 loader = Handle(THREAD, k->class_loader()); 453 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed 454 // in the correct class context. 455 if (loader.is_null() && 456 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { 457 JavaValue result(T_OBJECT); 458 JavaCalls::call_static(&result, k, 459 vmSymbols::getFromClass_name(), 460 vmSymbols::void_class_signature(), 461 thread); 462 if (HAS_PENDING_EXCEPTION) { 463 Handle ex(thread, thread->pending_exception()); 464 CLEAR_PENDING_EXCEPTION; 465 THROW_HANDLE_0(ex); 466 } 467 oop mirror = (oop) result.get_jobject(); 468 loader = Handle(THREAD, 469 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader()); 470 protection_domain = Handle(THREAD, 471 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain()); 472 } 473 } else { 474 // We call ClassLoader.getSystemClassLoader to obtain the system class loader. 475 loader = Handle(THREAD, SystemDictionary::java_system_loader()); 476 } 477 478 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 479 result = find_class_from_class_loader(env, sym, true, loader, 480 protection_domain, true, thread); 481 482 if (TraceClassResolution && result != NULL) { 483 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 484 } 485 486 // If we were the first invocation of jni_FindClass, we enable compilation again 487 // rather than just allowing invocation counter to overflow and decay. 488 // Controlled by flag DelayCompilationDuringStartup. 489 if (first_time && !CompileTheWorld) 490 CompilationPolicy::completed_vm_startup(); 491 492 return result; 493 JNI_END 494 495 #ifndef USDT2 496 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); 497 #else /* USDT2 */ 498 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID 499 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref)); 500 #endif /* USDT2 */ 501 502 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) 503 JNIWrapper("FromReflectedMethod"); 504 #ifndef USDT2 505 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); 506 #else /* USDT2 */ 507 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY( 508 env, method); 509 #endif /* USDT2 */ 510 jmethodID ret = NULL; 511 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); 512 513 // method is a handle to a java.lang.reflect.Method object 514 oop reflected = JNIHandles::resolve_non_null(method); 515 oop mirror = NULL; 516 int slot = 0; 517 518 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { 519 mirror = java_lang_reflect_Constructor::clazz(reflected); 520 slot = java_lang_reflect_Constructor::slot(reflected); 521 } else { 522 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type"); 523 mirror = java_lang_reflect_Method::clazz(reflected); 524 slot = java_lang_reflect_Method::slot(reflected); 525 } 526 Klass* k = java_lang_Class::as_Klass(mirror); 527 528 KlassHandle k1(THREAD, k); 529 // Make sure class is initialized before handing id's out to methods 530 k1()->initialize(CHECK_NULL); 531 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot); 532 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted 533 return ret; 534 JNI_END 535 536 #ifndef USDT2 537 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); 538 #else /* USDT2 */ 539 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID 540 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref)); 541 #endif /* USDT2 */ 542 543 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) 544 JNIWrapper("FromReflectedField"); 545 #ifndef USDT2 546 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); 547 #else /* USDT2 */ 548 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY( 549 env, field); 550 #endif /* USDT2 */ 551 jfieldID ret = NULL; 552 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); 553 554 // field is a handle to a java.lang.reflect.Field object 555 oop reflected = JNIHandles::resolve_non_null(field); 556 oop mirror = java_lang_reflect_Field::clazz(reflected); 557 Klass* k = java_lang_Class::as_Klass(mirror); 558 int slot = java_lang_reflect_Field::slot(reflected); 559 int modifiers = java_lang_reflect_Field::modifiers(reflected); 560 561 KlassHandle k1(THREAD, k); 562 // Make sure class is initialized before handing id's out to fields 563 k1()->initialize(CHECK_NULL); 564 565 // First check if this is a static field 566 if (modifiers & JVM_ACC_STATIC) { 567 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 568 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset); 569 assert(id != NULL, "corrupt Field object"); 570 debug_only(id->set_is_static_field_id();) 571 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 572 ret = jfieldIDWorkaround::to_static_jfieldID(id); 573 return ret; 574 } 575 576 // The slot is the index of the field description in the field-array 577 // The jfieldID is the offset of the field within the object 578 // It may also have hash bits for k, if VerifyJNIFields is turned on. 579 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 580 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); 581 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); 582 return ret; 583 JNI_END 584 585 #ifndef USDT2 586 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); 587 #else /* USDT2 */ 588 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject 589 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref)); 590 #endif /* USDT2 */ 591 592 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) 593 JNIWrapper("ToReflectedMethod"); 594 #ifndef USDT2 595 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); 596 #else /* USDT2 */ 597 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY( 598 env, cls, (uintptr_t) method_id, isStatic); 599 #endif /* USDT2 */ 600 jobject ret = NULL; 601 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); 602 603 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id)); 604 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); 605 oop reflection_method; 606 if (m->is_initializer()) { 607 reflection_method = Reflection::new_constructor(m, CHECK_NULL); 608 } else { 609 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); 610 } 611 ret = JNIHandles::make_local(env, reflection_method); 612 return ret; 613 JNI_END 614 615 #ifndef USDT2 616 DT_RETURN_MARK_DECL(GetSuperclass, jclass); 617 #else /* USDT2 */ 618 DT_RETURN_MARK_DECL(GetSuperclass, jclass 619 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref)); 620 #endif /* USDT2 */ 621 622 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) 623 JNIWrapper("GetSuperclass"); 624 #ifndef USDT2 625 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); 626 #else /* USDT2 */ 627 HOTSPOT_JNI_GETSUPERCLASS_ENTRY( 628 env, sub); 629 #endif /* USDT2 */ 630 jclass obj = NULL; 631 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); 632 633 oop mirror = JNIHandles::resolve_non_null(sub); 634 // primitive classes return NULL 635 if (java_lang_Class::is_primitive(mirror)) return NULL; 636 637 // Rules of Class.getSuperClass as implemented by KLass::java_super: 638 // arrays return Object 639 // interfaces return NULL 640 // proper classes return Klass::super() 641 Klass* k = java_lang_Class::as_Klass(mirror); 642 if (k->is_interface()) return NULL; 643 644 // return mirror for superclass 645 Klass* super = k->java_super(); 646 // super2 is the value computed by the compiler's getSuperClass intrinsic: 647 debug_only(Klass* super2 = ( k->oop_is_array() 648 ? SystemDictionary::Object_klass() 649 : k->super() ) ); 650 assert(super == super2, 651 "java_super computation depends on interface, array, other super"); 652 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror()); 653 return obj; 654 JNI_END 655 656 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) 657 JNIWrapper("IsSubclassOf"); 658 #ifndef USDT2 659 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); 660 #else /* USDT2 */ 661 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY( 662 env, sub, super); 663 #endif /* USDT2 */ 664 oop sub_mirror = JNIHandles::resolve_non_null(sub); 665 oop super_mirror = JNIHandles::resolve_non_null(super); 666 if (java_lang_Class::is_primitive(sub_mirror) || 667 java_lang_Class::is_primitive(super_mirror)) { 668 jboolean ret = (sub_mirror == super_mirror); 669 #ifndef USDT2 670 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 671 #else /* USDT2 */ 672 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 673 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( 686 ret); 687 #endif /* USDT2 */ 688 return ret; 689 JNI_END 690 691 #ifndef USDT2 692 DT_RETURN_MARK_DECL(Throw, jint); 693 #else /* USDT2 */ 694 DT_RETURN_MARK_DECL(Throw, jint 695 , HOTSPOT_JNI_THROW_RETURN(_ret_ref)); 696 #endif /* USDT2 */ 697 698 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) 699 JNIWrapper("Throw"); 700 #ifndef USDT2 701 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); 702 #else /* USDT2 */ 703 HOTSPOT_JNI_THROW_ENTRY( 704 env, obj); 705 #endif /* USDT2 */ 706 jint ret = JNI_OK; 707 DT_RETURN_MARK(Throw, jint, (const jint&)ret); 708 709 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); 710 ShouldNotReachHere(); 711 JNI_END 712 713 #ifndef USDT2 714 DT_RETURN_MARK_DECL(ThrowNew, jint); 715 #else /* USDT2 */ 716 DT_RETURN_MARK_DECL(ThrowNew, jint 717 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref)); 718 #endif /* USDT2 */ 719 720 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) 721 JNIWrapper("ThrowNew"); 722 #ifndef USDT2 723 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); 724 #else /* USDT2 */ 725 HOTSPOT_JNI_THROWNEW_ENTRY( 726 env, clazz, (char *) message); 727 #endif /* USDT2 */ 728 jint ret = JNI_OK; 729 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); 730 731 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 732 Symbol* name = k->name(); 733 Handle class_loader (THREAD, k->class_loader()); 734 Handle protection_domain (THREAD, k->protection_domain()); 735 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); 736 ShouldNotReachHere(); 737 JNI_END 738 739 740 // JNI functions only transform a pending async exception to a synchronous 741 // exception in ExceptionOccurred and ExceptionCheck calls, since 742 // delivering an async exception in other places won't change the native 743 // code's control flow and would be harmful when native code further calls 744 // JNI functions with a pending exception. Async exception is also checked 745 // during the call, so ExceptionOccurred/ExceptionCheck won't return 746 // false but deliver the async exception at the very end during 747 // state transition. 748 749 static void jni_check_async_exceptions(JavaThread *thread) { 750 assert(thread == Thread::current(), "must be itself"); 751 thread->check_and_handle_async_exceptions(); 752 } 753 754 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) 755 JNIWrapper("ExceptionOccurred"); 756 #ifndef USDT2 757 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); 758 #else /* USDT2 */ 759 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY( 760 env); 761 #endif /* USDT2 */ 762 jni_check_async_exceptions(thread); 763 oop exception = thread->pending_exception(); 764 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); 765 #ifndef USDT2 766 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); 767 #else /* USDT2 */ 768 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN( 769 ret); 770 #endif /* USDT2 */ 771 return ret; 772 JNI_END 773 774 775 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) 776 JNIWrapper("ExceptionDescribe"); 777 #ifndef USDT2 778 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); 779 #else /* USDT2 */ 780 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY( 781 env); 782 #endif /* USDT2 */ 783 if (thread->has_pending_exception()) { 784 Handle ex(thread, thread->pending_exception()); 785 thread->clear_pending_exception(); 786 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) { 787 // Don't print anything if we are being killed. 788 } else { 789 jio_fprintf(defaultStream::error_stream(), "Exception "); 790 if (thread != NULL && thread->threadObj() != NULL) { 791 ResourceMark rm(THREAD); 792 jio_fprintf(defaultStream::error_stream(), 793 "in thread \"%s\" ", thread->get_thread_name()); 794 } 795 if (ex->is_a(SystemDictionary::Throwable_klass())) { 796 JavaValue result(T_VOID); 797 JavaCalls::call_virtual(&result, 798 ex, 799 KlassHandle(THREAD, 800 SystemDictionary::Throwable_klass()), 801 vmSymbols::printStackTrace_name(), 802 vmSymbols::void_method_signature(), 803 THREAD); 804 // If an exception is thrown in the call it gets thrown away. Not much 805 // we can do with it. The native code that calls this, does not check 806 // for the exception - hence, it might still be in the thread when DestroyVM gets 807 // called, potentially causing a few asserts to trigger - since no pending exception 808 // is expected. 809 CLEAR_PENDING_EXCEPTION; 810 } else { 811 ResourceMark rm(THREAD); 812 jio_fprintf(defaultStream::error_stream(), 813 ". Uncaught exception of type %s.", 814 ex->klass()->external_name()); 815 } 816 } 817 } 818 #ifndef USDT2 819 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); 820 #else /* USDT2 */ 821 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN( 822 ); 823 #endif /* USDT2 */ 824 JNI_END 825 826 827 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) 828 JNIWrapper("ExceptionClear"); 829 #ifndef USDT2 830 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); 831 #else /* USDT2 */ 832 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY( 833 env); 834 #endif /* USDT2 */ 835 836 // The jni code might be using this API to clear java thrown exception. 837 // So just mark jvmti thread exception state as exception caught. 838 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); 839 if (state != NULL && state->is_exception_detected()) { 840 state->set_exception_caught(); 841 } 842 thread->clear_pending_exception(); 843 #ifndef USDT2 844 DTRACE_PROBE(hotspot_jni, ExceptionClear__return); 845 #else /* USDT2 */ 846 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN( 847 ); 848 #endif /* USDT2 */ 849 JNI_END 850 851 852 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) 853 JNIWrapper("FatalError"); 854 #ifndef USDT2 855 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); 856 #else /* USDT2 */ 857 HOTSPOT_JNI_FATALERROR_ENTRY( 858 env, (char *) msg); 859 #endif /* USDT2 */ 860 tty->print_cr("FATAL ERROR in native method: %s", msg); 861 thread->print_stack(); 862 os::abort(); // Dump core and abort 863 JNI_END 864 865 866 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) 867 JNIWrapper("PushLocalFrame"); 868 #ifndef USDT2 869 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); 870 #else /* USDT2 */ 871 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY( 872 env, capacity); 873 #endif /* USDT2 */ 874 //%note jni_11 875 if (capacity < 0 || 876 ((MaxJNILocalCapacity > 0) && (capacity > MaxJNILocalCapacity))) { 877 #ifndef USDT2 878 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); 879 #else /* USDT2 */ 880 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 881 (uint32_t)JNI_ERR); 882 #endif /* USDT2 */ 883 return JNI_ERR; 884 } 885 JNIHandleBlock* old_handles = thread->active_handles(); 886 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 887 assert(new_handles != NULL, "should not be NULL"); 888 new_handles->set_pop_frame_link(old_handles); 889 thread->set_active_handles(new_handles); 890 jint ret = JNI_OK; 891 #ifndef USDT2 892 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); 893 #else /* USDT2 */ 894 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 895 ret); 896 #endif /* USDT2 */ 897 return ret; 898 JNI_END 899 900 901 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) 902 JNIWrapper("PopLocalFrame"); 903 #ifndef USDT2 904 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); 905 #else /* USDT2 */ 906 HOTSPOT_JNI_POPLOCALFRAME_ENTRY( 907 env, result); 908 #endif /* USDT2 */ 909 //%note jni_11 910 Handle result_handle(thread, JNIHandles::resolve(result)); 911 JNIHandleBlock* old_handles = thread->active_handles(); 912 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); 913 if (new_handles != NULL) { 914 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. 915 // This way code will still work if PopLocalFrame is called without a corresponding 916 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise 917 // the release_block call will release the blocks. 918 thread->set_active_handles(new_handles); 919 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below 920 JNIHandleBlock::release_block(old_handles, thread); // may block 921 result = JNIHandles::make_local(thread, result_handle()); 922 } 923 #ifndef USDT2 924 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); 925 #else /* USDT2 */ 926 HOTSPOT_JNI_POPLOCALFRAME_RETURN( 927 result); 928 #endif /* USDT2 */ 929 return result; 930 JNI_END 931 932 933 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) 934 JNIWrapper("NewGlobalRef"); 935 #ifndef USDT2 936 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); 937 #else /* USDT2 */ 938 HOTSPOT_JNI_NEWGLOBALREF_ENTRY( 939 env, ref); 940 #endif /* USDT2 */ 941 Handle ref_handle(thread, JNIHandles::resolve(ref)); 942 jobject ret = JNIHandles::make_global(ref_handle); 943 #ifndef USDT2 944 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); 945 #else /* USDT2 */ 946 HOTSPOT_JNI_NEWGLOBALREF_RETURN( 947 ret); 948 #endif /* USDT2 */ 949 return ret; 950 JNI_END 951 952 // Must be JNI_ENTRY (with HandleMark) 953 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) 954 JNIWrapper("DeleteGlobalRef"); 955 #ifndef USDT2 956 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); 957 #else /* USDT2 */ 958 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY( 959 env, ref); 960 #endif /* USDT2 */ 961 JNIHandles::destroy_global(ref); 962 #ifndef USDT2 963 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); 964 #else /* USDT2 */ 965 HOTSPOT_JNI_DELETEGLOBALREF_RETURN( 966 ); 967 #endif /* USDT2 */ 968 JNI_END 969 970 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) 971 JNIWrapper("DeleteLocalRef"); 972 #ifndef USDT2 973 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); 974 #else /* USDT2 */ 975 HOTSPOT_JNI_DELETELOCALREF_ENTRY( 976 env, obj); 977 #endif /* USDT2 */ 978 JNIHandles::destroy_local(obj); 979 #ifndef USDT2 980 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); 981 #else /* USDT2 */ 982 HOTSPOT_JNI_DELETELOCALREF_RETURN( 983 ); 984 #endif /* USDT2 */ 985 JNI_END 986 987 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) 988 JNIWrapper("IsSameObject"); 989 #ifndef USDT2 990 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); 991 #else /* USDT2 */ 992 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY( 993 env, r1, r2); 994 #endif /* USDT2 */ 995 oop a = JNIHandles::resolve(r1); 996 oop b = JNIHandles::resolve(r2); 997 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; 998 #ifndef USDT2 999 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); 1000 #else /* USDT2 */ 1001 HOTSPOT_JNI_ISSAMEOBJECT_RETURN( 1002 ret); 1003 #endif /* USDT2 */ 1004 return ret; 1005 JNI_END 1006 1007 1008 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) 1009 JNIWrapper("NewLocalRef"); 1010 #ifndef USDT2 1011 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); 1012 #else /* USDT2 */ 1013 HOTSPOT_JNI_NEWLOCALREF_ENTRY( 1014 env, ref); 1015 #endif /* USDT2 */ 1016 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); 1017 #ifndef USDT2 1018 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); 1019 #else /* USDT2 */ 1020 HOTSPOT_JNI_NEWLOCALREF_RETURN( 1021 ret); 1022 #endif /* USDT2 */ 1023 return ret; 1024 JNI_END 1025 1026 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) 1027 JNIWrapper("EnsureLocalCapacity"); 1028 #ifndef USDT2 1029 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); 1030 #else /* USDT2 */ 1031 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY( 1032 env, capacity); 1033 #endif /* USDT2 */ 1034 jint ret; 1035 if (capacity >= 0 && 1036 ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) { 1037 ret = JNI_OK; 1038 } else { 1039 ret = JNI_ERR; 1040 } 1041 #ifndef USDT2 1042 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); 1043 #else /* USDT2 */ 1044 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN( 1045 ret); 1046 #endif /* USDT2 */ 1047 return ret; 1048 JNI_END 1049 1050 // Return the Handle Type 1051 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) 1052 JNIWrapper("GetObjectRefType"); 1053 #ifndef USDT2 1054 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); 1055 #else /* USDT2 */ 1056 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY( 1057 env, obj); 1058 #endif /* USDT2 */ 1059 jobjectRefType ret; 1060 if (JNIHandles::is_local_handle(thread, obj) || 1061 JNIHandles::is_frame_handle(thread, obj)) 1062 ret = JNILocalRefType; 1063 else if (JNIHandles::is_global_handle(obj)) 1064 ret = JNIGlobalRefType; 1065 else if (JNIHandles::is_weak_global_handle(obj)) 1066 ret = JNIWeakGlobalRefType; 1067 else 1068 ret = JNIInvalidRefType; 1069 #ifndef USDT2 1070 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); 1071 #else /* USDT2 */ 1072 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN( 1073 (void *) ret); 1074 #endif /* USDT2 */ 1075 return ret; 1076 JNI_END 1077 1078 1079 class JNI_ArgumentPusher : public SignatureIterator { 1080 protected: 1081 JavaCallArguments* _arguments; 1082 1083 virtual void get_bool () = 0; 1084 virtual void get_char () = 0; 1085 virtual void get_short () = 0; 1086 virtual void get_byte () = 0; 1087 virtual void get_int () = 0; 1088 virtual void get_long () = 0; 1089 virtual void get_float () = 0; 1090 virtual void get_double () = 0; 1091 virtual void get_object () = 0; 1092 1093 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) { 1094 this->_return_type = T_ILLEGAL; 1095 _arguments = NULL; 1096 } 1097 1098 public: 1099 virtual void iterate( uint64_t fingerprint ) = 0; 1100 1101 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } 1102 1103 inline void do_bool() { if (!is_return_type()) get_bool(); } 1104 inline void do_char() { if (!is_return_type()) get_char(); } 1105 inline void do_short() { if (!is_return_type()) get_short(); } 1106 inline void do_byte() { if (!is_return_type()) get_byte(); } 1107 inline void do_int() { if (!is_return_type()) get_int(); } 1108 inline void do_long() { if (!is_return_type()) get_long(); } 1109 inline void do_float() { if (!is_return_type()) get_float(); } 1110 inline void do_double() { if (!is_return_type()) get_double(); } 1111 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } 1112 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array 1113 inline void do_void() { } 1114 1115 JavaCallArguments* arguments() { return _arguments; } 1116 void push_receiver(Handle h) { _arguments->push_oop(h); } 1117 }; 1118 1119 1120 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { 1121 protected: 1122 va_list _ap; 1123 1124 inline void get_bool() { 1125 // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and 1126 // 0 to JNI_FALSE. Boolean return values from native are normalized the same in 1127 // TemplateInterpreterGenerator::generate_result_handler_for and 1128 // SharedRuntime::generate_native_wrapper. 1129 jboolean b = va_arg(_ap, jint); 1130 _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE)); 1131 } 1132 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg 1133 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg 1134 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg 1135 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } 1136 1137 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests 1138 1139 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } 1140 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg 1141 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } 1142 inline void get_object() { jobject l = va_arg(_ap, jobject); 1143 _arguments->push_oop(Handle((oop *)l, false)); } 1144 1145 inline void set_ap(va_list rap) { 1146 #ifdef va_copy 1147 va_copy(_ap, rap); 1148 #elif defined (__va_copy) 1149 __va_copy(_ap, rap); 1150 #else 1151 _ap = rap; 1152 #endif 1153 } 1154 1155 public: 1156 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap) 1157 : JNI_ArgumentPusher(signature) { 1158 set_ap(rap); 1159 } 1160 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap) 1161 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1162 set_ap(rap); 1163 } 1164 1165 // Optimized path if we have the bitvector form of signature 1166 void iterate( uint64_t fingerprint ) { 1167 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments 1168 else { 1169 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1170 result_feature_mask); 1171 1172 assert(fingerprint, "Fingerprint should not be 0"); 1173 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1174 while ( 1 ) { 1175 switch ( fingerprint & parameter_feature_mask ) { 1176 case bool_parm: 1177 get_bool(); 1178 break; 1179 case char_parm: 1180 get_char(); 1181 break; 1182 case short_parm: 1183 get_short(); 1184 break; 1185 case byte_parm: 1186 get_byte(); 1187 break; 1188 case int_parm: 1189 get_int(); 1190 break; 1191 case obj_parm: 1192 get_object(); 1193 break; 1194 case long_parm: 1195 get_long(); 1196 break; 1197 case float_parm: 1198 get_float(); 1199 break; 1200 case double_parm: 1201 get_double(); 1202 break; 1203 case done_parm: 1204 return; 1205 break; 1206 default: 1207 ShouldNotReachHere(); 1208 break; 1209 } 1210 fingerprint >>= parameter_feature_size; 1211 } 1212 } 1213 } 1214 }; 1215 1216 1217 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { 1218 protected: 1219 const jvalue *_ap; 1220 1221 inline void get_bool() { 1222 // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and 1223 // 0 to JNI_FALSE. Boolean return values from native are normalized the same in 1224 // TemplateInterpreterGenerator::generate_result_handler_for and 1225 // SharedRuntime::generate_native_wrapper. 1226 jboolean b = (_ap++)->z; 1227 _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE)); 1228 } 1229 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } 1230 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } 1231 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } 1232 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } 1233 1234 inline void get_long() { _arguments->push_long((_ap++)->j); } 1235 inline void get_float() { _arguments->push_float((_ap++)->f); } 1236 inline void get_double() { _arguments->push_double((_ap++)->d);} 1237 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } 1238 1239 inline void set_ap(const jvalue *rap) { _ap = rap; } 1240 1241 public: 1242 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap) 1243 : JNI_ArgumentPusher(signature) { 1244 set_ap(rap); 1245 } 1246 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap) 1247 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1248 set_ap(rap); 1249 } 1250 1251 // Optimized path if we have the bitvector form of signature 1252 void iterate( uint64_t fingerprint ) { 1253 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments 1254 else { 1255 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1256 result_feature_mask); 1257 assert(fingerprint, "Fingerprint should not be 0"); 1258 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1259 while ( 1 ) { 1260 switch ( fingerprint & parameter_feature_mask ) { 1261 case bool_parm: 1262 get_bool(); 1263 break; 1264 case char_parm: 1265 get_char(); 1266 break; 1267 case short_parm: 1268 get_short(); 1269 break; 1270 case byte_parm: 1271 get_byte(); 1272 break; 1273 case int_parm: 1274 get_int(); 1275 break; 1276 case obj_parm: 1277 get_object(); 1278 break; 1279 case long_parm: 1280 get_long(); 1281 break; 1282 case float_parm: 1283 get_float(); 1284 break; 1285 case double_parm: 1286 get_double(); 1287 break; 1288 case done_parm: 1289 return; 1290 break; 1291 default: 1292 ShouldNotReachHere(); 1293 break; 1294 } 1295 fingerprint >>= parameter_feature_size; 1296 } 1297 } 1298 } 1299 }; 1300 1301 1302 enum JNICallType { 1303 JNI_STATIC, 1304 JNI_VIRTUAL, 1305 JNI_NONVIRTUAL 1306 }; 1307 1308 1309 1310 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1311 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id)); 1312 1313 // Create object to hold arguments for the JavaCall, and associate it with 1314 // the jni parser 1315 ResourceMark rm(THREAD); 1316 int number_of_parameters = method->size_of_parameters(); 1317 JavaCallArguments java_args(number_of_parameters); 1318 args->set_java_argument_object(&java_args); 1319 1320 assert(method->is_static(), "method should be static"); 1321 1322 // Fill out JavaCallArguments object 1323 args->iterate( Fingerprinter(method).fingerprint() ); 1324 // Initialize result type 1325 result->set_type(args->get_ret_type()); 1326 1327 // Invoke the method. Result is returned as oop. 1328 JavaCalls::call(result, method, &java_args, CHECK); 1329 1330 // Convert result 1331 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1332 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1333 } 1334 } 1335 1336 1337 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1338 oop recv = JNIHandles::resolve(receiver); 1339 if (recv == NULL) { 1340 THROW(vmSymbols::java_lang_NullPointerException()); 1341 } 1342 Handle h_recv(THREAD, recv); 1343 1344 int number_of_parameters; 1345 Method* selected_method; 1346 { 1347 Method* m = Method::resolve_jmethod_id(method_id); 1348 number_of_parameters = m->size_of_parameters(); 1349 Klass* holder = m->method_holder(); 1350 if (call_type != JNI_VIRTUAL) { 1351 selected_method = m; 1352 } else if (!m->has_itable_index()) { 1353 // non-interface call -- for that little speed boost, don't handlize 1354 debug_only(No_Safepoint_Verifier nosafepoint;) 1355 // jni_GetMethodID makes sure class is linked and initialized 1356 // so m should have a valid vtable index. 1357 assert(m->valid_vtable_index(), "no valid vtable index"); 1358 int vtbl_index = m->vtable_index(); 1359 if (vtbl_index != Method::nonvirtual_vtable_index) { 1360 Klass* k = h_recv->klass(); 1361 // k might be an arrayKlassOop but all vtables start at 1362 // the same place. The cast is to avoid virtual call and assertion. 1363 InstanceKlass *ik = (InstanceKlass*)k; 1364 selected_method = ik->method_at_vtable(vtbl_index); 1365 } else { 1366 // final method 1367 selected_method = m; 1368 } 1369 } else { 1370 // interface call 1371 KlassHandle h_holder(THREAD, holder); 1372 1373 int itbl_index = m->itable_index(); 1374 Klass* k = h_recv->klass(); 1375 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); 1376 } 1377 } 1378 1379 methodHandle method(THREAD, selected_method); 1380 1381 // Create object to hold arguments for the JavaCall, and associate it with 1382 // the jni parser 1383 ResourceMark rm(THREAD); 1384 JavaCallArguments java_args(number_of_parameters); 1385 args->set_java_argument_object(&java_args); 1386 1387 // handle arguments 1388 assert(!method->is_static(), "method should not be static"); 1389 args->push_receiver(h_recv); // Push jobject handle 1390 1391 // Fill out JavaCallArguments object 1392 args->iterate( Fingerprinter(method).fingerprint() ); 1393 // Initialize result type 1394 result->set_type(args->get_ret_type()); 1395 1396 // Invoke the method. Result is returned as oop. 1397 JavaCalls::call(result, method, &java_args, CHECK); 1398 1399 // Convert result 1400 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1401 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1402 } 1403 } 1404 1405 1406 static instanceOop alloc_object(jclass clazz, TRAPS) { 1407 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1408 k()->check_valid_for_instantiation(false, CHECK_NULL); 1409 InstanceKlass::cast(k())->initialize(CHECK_NULL); 1410 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD); 1411 return ih; 1412 } 1413 1414 #ifndef USDT2 1415 DT_RETURN_MARK_DECL(AllocObject, jobject); 1416 #else /* USDT2 */ 1417 DT_RETURN_MARK_DECL(AllocObject, jobject 1418 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref)); 1419 #endif /* USDT2 */ 1420 1421 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) 1422 JNIWrapper("AllocObject"); 1423 1424 #ifndef USDT2 1425 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); 1426 #else /* USDT2 */ 1427 HOTSPOT_JNI_ALLOCOBJECT_ENTRY( 1428 env, clazz); 1429 #endif /* USDT2 */ 1430 jobject ret = NULL; 1431 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); 1432 1433 instanceOop i = alloc_object(clazz, CHECK_NULL); 1434 ret = JNIHandles::make_local(env, i); 1435 return ret; 1436 JNI_END 1437 1438 #ifndef USDT2 1439 DT_RETURN_MARK_DECL(NewObjectA, jobject); 1440 #else /* USDT2 */ 1441 DT_RETURN_MARK_DECL(NewObjectA, jobject 1442 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref)); 1443 #endif /* USDT2 */ 1444 1445 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) 1446 JNIWrapper("NewObjectA"); 1447 #ifndef USDT2 1448 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); 1449 #else /* USDT2 */ 1450 HOTSPOT_JNI_NEWOBJECTA_ENTRY( 1451 env, clazz, (uintptr_t) methodID); 1452 #endif /* USDT2 */ 1453 jobject obj = NULL; 1454 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); 1455 1456 instanceOop i = alloc_object(clazz, CHECK_NULL); 1457 obj = JNIHandles::make_local(env, i); 1458 JavaValue jvalue(T_VOID); 1459 JNI_ArgumentPusherArray ap(methodID, args); 1460 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1461 return obj; 1462 JNI_END 1463 1464 #ifndef USDT2 1465 DT_RETURN_MARK_DECL(NewObjectV, jobject); 1466 #else /* USDT2 */ 1467 DT_RETURN_MARK_DECL(NewObjectV, jobject 1468 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref)); 1469 #endif /* USDT2 */ 1470 1471 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) 1472 JNIWrapper("NewObjectV"); 1473 #ifndef USDT2 1474 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); 1475 #else /* USDT2 */ 1476 HOTSPOT_JNI_NEWOBJECTV_ENTRY( 1477 env, clazz, (uintptr_t) methodID); 1478 #endif /* USDT2 */ 1479 jobject obj = NULL; 1480 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); 1481 1482 instanceOop i = alloc_object(clazz, CHECK_NULL); 1483 obj = JNIHandles::make_local(env, i); 1484 JavaValue jvalue(T_VOID); 1485 JNI_ArgumentPusherVaArg ap(methodID, args); 1486 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1487 return obj; 1488 JNI_END 1489 1490 #ifndef USDT2 1491 DT_RETURN_MARK_DECL(NewObject, jobject); 1492 #else /* USDT2 */ 1493 DT_RETURN_MARK_DECL(NewObject, jobject 1494 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref)); 1495 #endif /* USDT2 */ 1496 1497 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) 1498 JNIWrapper("NewObject"); 1499 #ifndef USDT2 1500 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); 1501 #else /* USDT2 */ 1502 HOTSPOT_JNI_NEWOBJECT_ENTRY( 1503 env, clazz, (uintptr_t) methodID); 1504 #endif /* USDT2 */ 1505 jobject obj = NULL; 1506 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); 1507 1508 instanceOop i = alloc_object(clazz, CHECK_NULL); 1509 obj = JNIHandles::make_local(env, i); 1510 va_list args; 1511 va_start(args, methodID); 1512 JavaValue jvalue(T_VOID); 1513 JNI_ArgumentPusherVaArg ap(methodID, args); 1514 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1515 va_end(args); 1516 return obj; 1517 JNI_END 1518 1519 1520 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) 1521 JNIWrapper("GetObjectClass"); 1522 #ifndef USDT2 1523 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); 1524 #else /* USDT2 */ 1525 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY( 1526 env, obj); 1527 #endif /* USDT2 */ 1528 Klass* k = JNIHandles::resolve_non_null(obj)->klass(); 1529 jclass ret = 1530 (jclass) JNIHandles::make_local(env, k->java_mirror()); 1531 #ifndef USDT2 1532 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); 1533 #else /* USDT2 */ 1534 HOTSPOT_JNI_GETOBJECTCLASS_RETURN( 1535 ret); 1536 #endif /* USDT2 */ 1537 return ret; 1538 JNI_END 1539 1540 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) 1541 JNIWrapper("IsInstanceOf"); 1542 #ifndef USDT2 1543 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); 1544 #else /* USDT2 */ 1545 HOTSPOT_JNI_ISINSTANCEOF_ENTRY( 1546 env, obj, clazz); 1547 #endif /* USDT2 */ 1548 jboolean ret = JNI_TRUE; 1549 if (obj != NULL) { 1550 ret = JNI_FALSE; 1551 Klass* k = java_lang_Class::as_Klass( 1552 JNIHandles::resolve_non_null(clazz)); 1553 if (k != NULL) { 1554 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; 1555 } 1556 } 1557 #ifndef USDT2 1558 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); 1559 #else /* USDT2 */ 1560 HOTSPOT_JNI_ISINSTANCEOF_RETURN( 1561 ret); 1562 #endif /* USDT2 */ 1563 return ret; 1564 JNI_END 1565 1566 1567 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, 1568 const char *sig, bool is_static, TRAPS) { 1569 // %%%% This code should probably just call into a method in the LinkResolver 1570 // 1571 // The class should have been loaded (we have an instance of the class 1572 // passed in) so the method and signature should already be in the symbol 1573 // table. If they're not there, the method doesn't exist. 1574 const char *name_to_probe = (name_str == NULL) 1575 ? vmSymbols::object_initializer_name()->as_C_string() 1576 : name_str; 1577 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe)); 1578 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig)); 1579 1580 if (name == NULL || signature == NULL) { 1581 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1582 } 1583 1584 // Throw a NoSuchMethodError exception if we have an instance of a 1585 // primitive java.lang.Class 1586 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { 1587 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1588 } 1589 1590 KlassHandle klass(THREAD, 1591 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1592 1593 // Make sure class is linked and initialized before handing id's out to 1594 // Method*s. 1595 klass()->initialize(CHECK_NULL); 1596 1597 Method* m; 1598 if (name == vmSymbols::object_initializer_name() || 1599 name == vmSymbols::class_initializer_name()) { 1600 // Never search superclasses for constructors 1601 if (klass->oop_is_instance()) { 1602 m = InstanceKlass::cast(klass())->find_method(name, signature); 1603 } else { 1604 m = NULL; 1605 } 1606 } else { 1607 m = klass->lookup_method(name, signature); 1608 if (m == NULL && klass->oop_is_instance()) { 1609 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature); 1610 } 1611 } 1612 if (m == NULL || (m->is_static() != is_static)) { 1613 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1614 } 1615 return m->jmethod_id(); 1616 } 1617 1618 1619 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, 1620 const char *name, const char *sig)) 1621 JNIWrapper("GetMethodID"); 1622 #ifndef USDT2 1623 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); 1624 #else /* USDT2 */ 1625 HOTSPOT_JNI_GETMETHODID_ENTRY( 1626 env, clazz, (char *) name, (char *) sig); 1627 #endif /* USDT2 */ 1628 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); 1629 #ifndef USDT2 1630 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); 1631 #else /* USDT2 */ 1632 HOTSPOT_JNI_GETMETHODID_RETURN( 1633 (uintptr_t) ret); 1634 #endif /* USDT2 */ 1635 return ret; 1636 JNI_END 1637 1638 1639 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, 1640 const char *name, const char *sig)) 1641 JNIWrapper("GetStaticMethodID"); 1642 #ifndef USDT2 1643 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); 1644 #else /* USDT2 */ 1645 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY( 1646 env, (char *) clazz, (char *) name, (char *)sig); 1647 #endif /* USDT2 */ 1648 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); 1649 #ifndef USDT2 1650 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); 1651 #else /* USDT2 */ 1652 HOTSPOT_JNI_GETSTATICMETHODID_RETURN( 1653 (uintptr_t) ret); 1654 #endif /* USDT2 */ 1655 return ret; 1656 JNI_END 1657 1658 1659 1660 // 1661 // Calling Methods 1662 // 1663 1664 #ifndef USDT2 1665 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ 1666 \ 1667 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ 1668 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ 1669 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ 1670 \ 1671 JNI_ENTRY(ResultType, \ 1672 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1673 JNIWrapper("Call" XSTR(Result) "Method"); \ 1674 \ 1675 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \ 1676 ResultType ret = 0;\ 1677 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1678 (const ResultType&)ret);\ 1679 \ 1680 va_list args; \ 1681 va_start(args, methodID); \ 1682 JavaValue jvalue(Tag); \ 1683 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1684 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1685 va_end(args); \ 1686 ret = jvalue.get_##ResultType(); \ 1687 return ret;\ 1688 JNI_END \ 1689 \ 1690 \ 1691 JNI_ENTRY(ResultType, \ 1692 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1693 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1694 \ 1695 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \ 1696 ResultType ret = 0;\ 1697 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1698 (const ResultType&)ret);\ 1699 \ 1700 JavaValue jvalue(Tag); \ 1701 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1702 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1703 ret = jvalue.get_##ResultType(); \ 1704 return ret;\ 1705 JNI_END \ 1706 \ 1707 \ 1708 JNI_ENTRY(ResultType, \ 1709 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1710 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1711 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \ 1712 ResultType ret = 0;\ 1713 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1714 (const ResultType&)ret);\ 1715 \ 1716 JavaValue jvalue(Tag); \ 1717 JNI_ArgumentPusherArray ap(methodID, args); \ 1718 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1719 ret = jvalue.get_##ResultType(); \ 1720 return ret;\ 1721 JNI_END 1722 1723 // the runtime type of subword integral basic types is integer 1724 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) 1725 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) 1726 DEFINE_CALLMETHOD(jchar, Char, T_CHAR) 1727 DEFINE_CALLMETHOD(jshort, Short, T_SHORT) 1728 1729 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) 1730 DEFINE_CALLMETHOD(jint, Int, T_INT) 1731 DEFINE_CALLMETHOD(jlong, Long, T_LONG) 1732 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) 1733 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) 1734 1735 DT_VOID_RETURN_MARK_DECL(CallVoidMethod); 1736 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); 1737 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); 1738 1739 #else /* USDT2 */ 1740 1741 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \ 1742 , EntryProbe, ReturnProbe) \ 1743 \ 1744 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \ 1745 , ReturnProbe); \ 1746 \ 1747 JNI_ENTRY(ResultType, \ 1748 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1749 JNIWrapper("Call" XSTR(Result) "Method"); \ 1750 \ 1751 EntryProbe; \ 1752 ResultType ret = 0;\ 1753 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1754 (const ResultType&)ret);\ 1755 \ 1756 va_list args; \ 1757 va_start(args, methodID); \ 1758 JavaValue jvalue(Tag); \ 1759 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1760 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1761 va_end(args); \ 1762 ret = jvalue.get_##ResultType(); \ 1763 return ret;\ 1764 JNI_END 1765 1766 // the runtime type of subword integral basic types is integer 1767 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN 1768 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1769 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1770 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE 1771 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1772 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1773 DEFINE_CALLMETHOD(jchar, Char, T_CHAR 1774 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1775 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1776 DEFINE_CALLMETHOD(jshort, Short, T_SHORT 1777 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1778 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1779 1780 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT 1781 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1782 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1783 DEFINE_CALLMETHOD(jint, Int, T_INT, 1784 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1785 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1786 DEFINE_CALLMETHOD(jlong, Long, T_LONG 1787 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1788 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1789 // Float and double probes don't return value because dtrace doesn't currently support it 1790 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT 1791 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1792 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1793 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE 1794 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1795 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1796 1797 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \ 1798 , EntryProbe, ReturnProbe) \ 1799 \ 1800 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \ 1801 , ReturnProbe); \ 1802 \ 1803 JNI_ENTRY(ResultType, \ 1804 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1805 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1806 \ 1807 EntryProbe;\ 1808 ResultType ret = 0;\ 1809 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1810 (const ResultType&)ret);\ 1811 \ 1812 JavaValue jvalue(Tag); \ 1813 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1814 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1815 ret = jvalue.get_##ResultType(); \ 1816 return ret;\ 1817 JNI_END 1818 1819 // the runtime type of subword integral basic types is integer 1820 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN 1821 , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1822 HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref)) 1823 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE 1824 , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1825 HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref)) 1826 DEFINE_CALLMETHODV(jchar, Char, T_CHAR 1827 , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1828 HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref)) 1829 DEFINE_CALLMETHODV(jshort, Short, T_SHORT 1830 , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1831 HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref)) 1832 1833 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT 1834 , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1835 HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref)) 1836 DEFINE_CALLMETHODV(jint, Int, T_INT, 1837 HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1838 HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref)) 1839 DEFINE_CALLMETHODV(jlong, Long, T_LONG 1840 , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1841 HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref)) 1842 // Float and double probes don't return value because dtrace doesn't currently support it 1843 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT 1844 , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1845 HOTSPOT_JNI_CALLFLOATMETHODV_RETURN()) 1846 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE 1847 , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1848 HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN()) 1849 1850 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \ 1851 , EntryProbe, ReturnProbe) \ 1852 \ 1853 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \ 1854 , ReturnProbe); \ 1855 \ 1856 JNI_ENTRY(ResultType, \ 1857 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1858 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1859 EntryProbe; \ 1860 ResultType ret = 0;\ 1861 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1862 (const ResultType&)ret);\ 1863 \ 1864 JavaValue jvalue(Tag); \ 1865 JNI_ArgumentPusherArray ap(methodID, args); \ 1866 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1867 ret = jvalue.get_##ResultType(); \ 1868 return ret;\ 1869 JNI_END 1870 1871 // the runtime type of subword integral basic types is integer 1872 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN 1873 , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1874 HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref)) 1875 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE 1876 , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1877 HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref)) 1878 DEFINE_CALLMETHODA(jchar, Char, T_CHAR 1879 , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1880 HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref)) 1881 DEFINE_CALLMETHODA(jshort, Short, T_SHORT 1882 , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1883 HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref)) 1884 1885 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT 1886 , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1887 HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref)) 1888 DEFINE_CALLMETHODA(jint, Int, T_INT, 1889 HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1890 HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref)) 1891 DEFINE_CALLMETHODA(jlong, Long, T_LONG 1892 , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1893 HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref)) 1894 // Float and double probes don't return value because dtrace doesn't currently support it 1895 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT 1896 , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1897 HOTSPOT_JNI_CALLFLOATMETHODA_RETURN()) 1898 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE 1899 , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1900 HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN()) 1901 1902 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN()); 1903 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN()); 1904 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN()); 1905 1906 #endif /* USDT2 */ 1907 1908 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) 1909 JNIWrapper("CallVoidMethod"); 1910 #ifndef USDT2 1911 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); 1912 #else /* USDT2 */ 1913 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY( 1914 env, obj, (uintptr_t) methodID); 1915 #endif /* USDT2 */ 1916 DT_VOID_RETURN_MARK(CallVoidMethod); 1917 1918 va_list args; 1919 va_start(args, methodID); 1920 JavaValue jvalue(T_VOID); 1921 JNI_ArgumentPusherVaArg ap(methodID, args); 1922 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1923 va_end(args); 1924 JNI_END 1925 1926 1927 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) 1928 JNIWrapper("CallVoidMethodV"); 1929 #ifndef USDT2 1930 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); 1931 #else /* USDT2 */ 1932 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY( 1933 env, obj, (uintptr_t) methodID); 1934 #endif /* USDT2 */ 1935 DT_VOID_RETURN_MARK(CallVoidMethodV); 1936 1937 JavaValue jvalue(T_VOID); 1938 JNI_ArgumentPusherVaArg ap(methodID, args); 1939 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1940 JNI_END 1941 1942 1943 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) 1944 JNIWrapper("CallVoidMethodA"); 1945 #ifndef USDT2 1946 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); 1947 #else /* USDT2 */ 1948 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY( 1949 env, obj, (uintptr_t) methodID); 1950 #endif /* USDT2 */ 1951 DT_VOID_RETURN_MARK(CallVoidMethodA); 1952 1953 JavaValue jvalue(T_VOID); 1954 JNI_ArgumentPusherArray ap(methodID, args); 1955 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1956 JNI_END 1957 1958 1959 #ifndef USDT2 1960 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ 1961 \ 1962 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ 1963 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ 1964 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ 1965 \ 1966 JNI_ENTRY(ResultType, \ 1967 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1968 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1969 \ 1970 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ 1971 ResultType ret;\ 1972 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1973 (const ResultType&)ret);\ 1974 \ 1975 va_list args; \ 1976 va_start(args, methodID); \ 1977 JavaValue jvalue(Tag); \ 1978 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1979 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1980 va_end(args); \ 1981 ret = jvalue.get_##ResultType(); \ 1982 return ret;\ 1983 JNI_END \ 1984 \ 1985 JNI_ENTRY(ResultType, \ 1986 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 1987 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ 1988 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ 1989 ResultType ret;\ 1990 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 1991 (const ResultType&)ret);\ 1992 \ 1993 JavaValue jvalue(Tag); \ 1994 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1995 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1996 ret = jvalue.get_##ResultType(); \ 1997 return ret;\ 1998 JNI_END \ 1999 \ 2000 JNI_ENTRY(ResultType, \ 2001 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2002 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2003 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ 2004 ResultType ret;\ 2005 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2006 (const ResultType&)ret);\ 2007 \ 2008 JavaValue jvalue(Tag); \ 2009 JNI_ArgumentPusherArray ap(methodID, args); \ 2010 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2011 ret = jvalue.get_##ResultType(); \ 2012 return ret;\ 2013 JNI_END 2014 2015 // the runtime type of subword integral basic types is integer 2016 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) 2017 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) 2018 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) 2019 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) 2020 2021 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) 2022 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) 2023 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) 2024 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) 2025 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) 2026 2027 2028 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); 2029 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); 2030 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); 2031 2032 #else /* USDT2 */ 2033 2034 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \ 2035 , EntryProbe, ReturnProbe) \ 2036 \ 2037 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \ 2038 , ReturnProbe);\ 2039 \ 2040 JNI_ENTRY(ResultType, \ 2041 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 2042 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 2043 \ 2044 EntryProbe;\ 2045 ResultType ret;\ 2046 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 2047 (const ResultType&)ret);\ 2048 \ 2049 va_list args; \ 2050 va_start(args, methodID); \ 2051 JavaValue jvalue(Tag); \ 2052 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2053 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2054 va_end(args); \ 2055 ret = jvalue.get_##ResultType(); \ 2056 return ret;\ 2057 JNI_END 2058 2059 // the runtime type of subword integral basic types is integer 2060 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN 2061 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2062 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref)) 2063 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE 2064 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2065 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref)) 2066 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR 2067 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2068 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref)) 2069 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT 2070 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2071 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref)) 2072 2073 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT 2074 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2075 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref)) 2076 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT 2077 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2078 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref)) 2079 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG 2080 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2081 // Float and double probes don't return value because dtrace doesn't currently support it 2082 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref)) 2083 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT 2084 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2085 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN()) 2086 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE 2087 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2088 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN()) 2089 2090 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \ 2091 , EntryProbe, ReturnProbe) \ 2092 \ 2093 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \ 2094 , ReturnProbe);\ 2095 \ 2096 JNI_ENTRY(ResultType, \ 2097 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2098 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \ 2099 \ 2100 EntryProbe;\ 2101 ResultType ret;\ 2102 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2103 (const ResultType&)ret);\ 2104 \ 2105 JavaValue jvalue(Tag); \ 2106 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2107 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2108 ret = jvalue.get_##ResultType(); \ 2109 return ret;\ 2110 JNI_END 2111 2112 // the runtime type of subword integral basic types is integer 2113 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN 2114 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2115 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref)) 2116 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE 2117 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2118 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref)) 2119 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR 2120 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2121 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref)) 2122 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT 2123 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2124 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref)) 2125 2126 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT 2127 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2128 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref)) 2129 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT 2130 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2131 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref)) 2132 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG 2133 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2134 // Float and double probes don't return value because dtrace doesn't currently support it 2135 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref)) 2136 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT 2137 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2138 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN()) 2139 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE 2140 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2141 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN()) 2142 2143 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \ 2144 , EntryProbe, ReturnProbe) \ 2145 \ 2146 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \ 2147 , ReturnProbe);\ 2148 \ 2149 JNI_ENTRY(ResultType, \ 2150 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2151 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2152 \ 2153 EntryProbe;\ 2154 ResultType ret;\ 2155 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2156 (const ResultType&)ret);\ 2157 \ 2158 JavaValue jvalue(Tag); \ 2159 JNI_ArgumentPusherArray ap(methodID, args); \ 2160 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2161 ret = jvalue.get_##ResultType(); \ 2162 return ret;\ 2163 JNI_END 2164 2165 // the runtime type of subword integral basic types is integer 2166 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN 2167 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2168 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref)) 2169 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE 2170 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2171 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref)) 2172 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR 2173 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2174 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref)) 2175 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT 2176 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2177 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref)) 2178 2179 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT 2180 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2181 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref)) 2182 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT 2183 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2184 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref)) 2185 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG 2186 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2187 // Float and double probes don't return value because dtrace doesn't currently support it 2188 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref)) 2189 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT 2190 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2191 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN()) 2192 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE 2193 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2194 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN()) 2195 2196 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod 2197 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN()); 2198 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV 2199 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN()); 2200 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA 2201 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN()); 2202 #endif /* USDT2 */ 2203 2204 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) 2205 JNIWrapper("CallNonvirtualVoidMethod"); 2206 2207 #ifndef USDT2 2208 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, 2209 env, obj, cls, methodID); 2210 #else /* USDT2 */ 2211 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY( 2212 env, obj, cls, (uintptr_t) methodID); 2213 #endif /* USDT2 */ 2214 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); 2215 2216 va_list args; 2217 va_start(args, methodID); 2218 JavaValue jvalue(T_VOID); 2219 JNI_ArgumentPusherVaArg ap(methodID, args); 2220 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2221 va_end(args); 2222 JNI_END 2223 2224 2225 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) 2226 JNIWrapper("CallNonvirtualVoidMethodV"); 2227 2228 #ifndef USDT2 2229 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, 2230 env, obj, cls, methodID); 2231 #else /* USDT2 */ 2232 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY( 2233 env, obj, cls, (uintptr_t) methodID); 2234 #endif /* USDT2 */ 2235 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); 2236 2237 JavaValue jvalue(T_VOID); 2238 JNI_ArgumentPusherVaArg ap(methodID, args); 2239 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2240 JNI_END 2241 2242 2243 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) 2244 JNIWrapper("CallNonvirtualVoidMethodA"); 2245 #ifndef USDT2 2246 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, 2247 env, obj, cls, methodID); 2248 #else /* USDT2 */ 2249 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY( 2250 env, obj, cls, (uintptr_t) methodID); 2251 #endif /* USDT2 */ 2252 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); 2253 JavaValue jvalue(T_VOID); 2254 JNI_ArgumentPusherArray ap(methodID, args); 2255 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2256 JNI_END 2257 2258 2259 #ifndef USDT2 2260 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ 2261 \ 2262 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ 2263 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ 2264 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ 2265 \ 2266 JNI_ENTRY(ResultType, \ 2267 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2268 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2269 \ 2270 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ 2271 ResultType ret = 0;\ 2272 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2273 (const ResultType&)ret);\ 2274 \ 2275 va_list args; \ 2276 va_start(args, methodID); \ 2277 JavaValue jvalue(Tag); \ 2278 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2279 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2280 va_end(args); \ 2281 ret = jvalue.get_##ResultType(); \ 2282 return ret;\ 2283 JNI_END \ 2284 \ 2285 JNI_ENTRY(ResultType, \ 2286 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2287 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2288 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ 2289 ResultType ret = 0;\ 2290 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2291 (const ResultType&)ret);\ 2292 \ 2293 JavaValue jvalue(Tag); \ 2294 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2295 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2296 ret = jvalue.get_##ResultType(); \ 2297 return ret;\ 2298 JNI_END \ 2299 \ 2300 JNI_ENTRY(ResultType, \ 2301 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2302 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2303 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ 2304 ResultType ret = 0;\ 2305 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2306 (const ResultType&)ret);\ 2307 \ 2308 JavaValue jvalue(Tag); \ 2309 JNI_ArgumentPusherArray ap(methodID, args); \ 2310 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2311 ret = jvalue.get_##ResultType(); \ 2312 return ret;\ 2313 JNI_END 2314 2315 // the runtime type of subword integral basic types is integer 2316 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) 2317 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) 2318 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) 2319 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) 2320 2321 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) 2322 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) 2323 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) 2324 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) 2325 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) 2326 2327 2328 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); 2329 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); 2330 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); 2331 2332 #else /* USDT2 */ 2333 2334 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \ 2335 , EntryProbe, ResultProbe) \ 2336 \ 2337 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \ 2338 , ResultProbe); \ 2339 \ 2340 JNI_ENTRY(ResultType, \ 2341 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2342 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2343 \ 2344 EntryProbe; \ 2345 ResultType ret = 0;\ 2346 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2347 (const ResultType&)ret);\ 2348 \ 2349 va_list args; \ 2350 va_start(args, methodID); \ 2351 JavaValue jvalue(Tag); \ 2352 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2353 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2354 va_end(args); \ 2355 ret = jvalue.get_##ResultType(); \ 2356 return ret;\ 2357 JNI_END 2358 2359 // the runtime type of subword integral basic types is integer 2360 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN 2361 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2362 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref)); 2363 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE 2364 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2365 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref)); 2366 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR 2367 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2368 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref)); 2369 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT 2370 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2371 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref)); 2372 2373 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT 2374 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2375 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref)); 2376 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT 2377 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2378 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref)); 2379 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG 2380 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2381 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref)); 2382 // Float and double probes don't return value because dtrace doesn't currently support it 2383 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT 2384 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2385 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN()); 2386 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE 2387 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2388 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN()); 2389 2390 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \ 2391 , EntryProbe, ResultProbe) \ 2392 \ 2393 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \ 2394 , ResultProbe); \ 2395 \ 2396 JNI_ENTRY(ResultType, \ 2397 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2398 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2399 \ 2400 EntryProbe; \ 2401 ResultType ret = 0;\ 2402 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2403 (const ResultType&)ret);\ 2404 \ 2405 JavaValue jvalue(Tag); \ 2406 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2407 /* Make sure class is initialized before trying to invoke its method */ \ 2408 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \ 2409 k()->initialize(CHECK_0); \ 2410 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2411 va_end(args); \ 2412 ret = jvalue.get_##ResultType(); \ 2413 return ret;\ 2414 JNI_END 2415 2416 // the runtime type of subword integral basic types is integer 2417 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN 2418 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2419 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref)); 2420 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE 2421 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2422 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref)); 2423 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR 2424 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2425 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref)); 2426 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT 2427 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2428 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref)); 2429 2430 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT 2431 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2432 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref)); 2433 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT 2434 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2435 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref)); 2436 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG 2437 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2438 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref)); 2439 // Float and double probes don't return value because dtrace doesn't currently support it 2440 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT 2441 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2442 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN()); 2443 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE 2444 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2445 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN()); 2446 2447 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \ 2448 , EntryProbe, ResultProbe) \ 2449 \ 2450 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \ 2451 , ResultProbe); \ 2452 \ 2453 JNI_ENTRY(ResultType, \ 2454 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2455 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2456 \ 2457 EntryProbe; \ 2458 ResultType ret = 0;\ 2459 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2460 (const ResultType&)ret);\ 2461 \ 2462 JavaValue jvalue(Tag); \ 2463 JNI_ArgumentPusherArray ap(methodID, args); \ 2464 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2465 ret = jvalue.get_##ResultType(); \ 2466 return ret;\ 2467 JNI_END 2468 2469 // the runtime type of subword integral basic types is integer 2470 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN 2471 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2472 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref)); 2473 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE 2474 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2475 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref)); 2476 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR 2477 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2478 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref)); 2479 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT 2480 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2481 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref)); 2482 2483 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT 2484 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2485 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref)); 2486 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT 2487 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2488 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref)); 2489 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG 2490 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2491 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref)); 2492 // Float and double probes don't return value because dtrace doesn't currently support it 2493 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT 2494 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2495 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN()); 2496 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE 2497 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2498 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN()); 2499 2500 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod 2501 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN()); 2502 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV 2503 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN()); 2504 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA 2505 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN()); 2506 #endif /* USDT2 */ 2507 2508 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) 2509 JNIWrapper("CallStaticVoidMethod"); 2510 #ifndef USDT2 2511 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); 2512 #else /* USDT2 */ 2513 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY( 2514 env, cls, (uintptr_t) methodID); 2515 #endif /* USDT2 */ 2516 DT_VOID_RETURN_MARK(CallStaticVoidMethod); 2517 2518 va_list args; 2519 va_start(args, methodID); 2520 JavaValue jvalue(T_VOID); 2521 JNI_ArgumentPusherVaArg ap(methodID, args); 2522 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2523 va_end(args); 2524 JNI_END 2525 2526 2527 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) 2528 JNIWrapper("CallStaticVoidMethodV"); 2529 #ifndef USDT2 2530 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); 2531 #else /* USDT2 */ 2532 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY( 2533 env, cls, (uintptr_t) methodID); 2534 #endif /* USDT2 */ 2535 DT_VOID_RETURN_MARK(CallStaticVoidMethodV); 2536 2537 JavaValue jvalue(T_VOID); 2538 JNI_ArgumentPusherVaArg ap(methodID, args); 2539 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2540 JNI_END 2541 2542 2543 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) 2544 JNIWrapper("CallStaticVoidMethodA"); 2545 #ifndef USDT2 2546 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); 2547 #else /* USDT2 */ 2548 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY( 2549 env, cls, (uintptr_t) methodID); 2550 #endif /* USDT2 */ 2551 DT_VOID_RETURN_MARK(CallStaticVoidMethodA); 2552 2553 JavaValue jvalue(T_VOID); 2554 JNI_ArgumentPusherArray ap(methodID, args); 2555 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2556 JNI_END 2557 2558 2559 // 2560 // Accessing Fields 2561 // 2562 2563 2564 #ifndef USDT2 2565 DT_RETURN_MARK_DECL(GetFieldID, jfieldID); 2566 #else /* USDT2 */ 2567 DT_RETURN_MARK_DECL(GetFieldID, jfieldID 2568 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref)); 2569 #endif /* USDT2 */ 2570 2571 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, 2572 const char *name, const char *sig)) 2573 JNIWrapper("GetFieldID"); 2574 #ifndef USDT2 2575 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); 2576 #else /* USDT2 */ 2577 HOTSPOT_JNI_GETFIELDID_ENTRY( 2578 env, clazz, (char *) name, (char *) sig); 2579 #endif /* USDT2 */ 2580 jfieldID ret = 0; 2581 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); 2582 2583 // The class should have been loaded (we have an instance of the class 2584 // passed in) so the field and signature should already be in the symbol 2585 // table. If they're not there, the field doesn't exist. 2586 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2587 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2588 if (fieldname == NULL || signame == NULL) { 2589 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2590 } 2591 KlassHandle k(THREAD, 2592 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2593 // Make sure class is initialized before handing id's out to fields 2594 k()->initialize(CHECK_NULL); 2595 2596 fieldDescriptor fd; 2597 if (!k()->oop_is_instance() || 2598 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) { 2599 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2600 } 2601 2602 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop 2603 // It may also have hash bits for k, if VerifyJNIFields is turned on. 2604 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); 2605 return ret; 2606 JNI_END 2607 2608 2609 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) 2610 JNIWrapper("GetObjectField"); 2611 #ifndef USDT2 2612 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); 2613 #else /* USDT2 */ 2614 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY( 2615 env, obj, (uintptr_t) fieldID); 2616 #endif /* USDT2 */ 2617 oop o = JNIHandles::resolve_non_null(obj); 2618 Klass* k = o->klass(); 2619 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2620 // Keep JVMTI addition small and only check enabled flag here. 2621 // jni_GetField_probe() assumes that is okay to create handles. 2622 if (JvmtiExport::should_post_field_access()) { 2623 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); 2624 } 2625 jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); 2626 #if INCLUDE_ALL_GCS 2627 // If G1 is enabled and we are accessing the value of the referent 2628 // field in a reference object then we need to register a non-null 2629 // referent with the SATB barrier. 2630 if (UseG1GC) { 2631 bool needs_barrier = false; 2632 2633 if (ret != NULL && 2634 offset == java_lang_ref_Reference::referent_offset && 2635 InstanceKlass::cast(k)->reference_type() != REF_NONE) { 2636 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); 2637 needs_barrier = true; 2638 } 2639 2640 if (needs_barrier) { 2641 oop referent = JNIHandles::resolve(ret); 2642 G1SATBCardTableModRefBS::enqueue(referent); 2643 } 2644 } 2645 #endif // INCLUDE_ALL_GCS 2646 #ifndef USDT2 2647 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); 2648 #else /* USDT2 */ 2649 HOTSPOT_JNI_GETOBJECTFIELD_RETURN( 2650 ret); 2651 #endif /* USDT2 */ 2652 return ret; 2653 JNI_END 2654 2655 2656 #ifndef USDT2 2657 #define DEFINE_GETFIELD(Return,Fieldname,Result) \ 2658 \ 2659 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ 2660 \ 2661 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2662 JNIWrapper("Get" XSTR(Result) "Field"); \ 2663 \ 2664 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ 2665 Return ret = 0;\ 2666 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2667 \ 2668 oop o = JNIHandles::resolve_non_null(obj); \ 2669 Klass* k = o->klass(); \ 2670 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2671 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2672 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2673 /* and creates a ResetNoHandleMark. */ \ 2674 if (JvmtiExport::should_post_field_access()) { \ 2675 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2676 } \ 2677 ret = o->Fieldname##_field(offset); \ 2678 return ret; \ 2679 JNI_END 2680 2681 DEFINE_GETFIELD(jboolean, bool, Boolean) 2682 DEFINE_GETFIELD(jbyte, byte, Byte) 2683 DEFINE_GETFIELD(jchar, char, Char) 2684 DEFINE_GETFIELD(jshort, short, Short) 2685 DEFINE_GETFIELD(jint, int, Int) 2686 DEFINE_GETFIELD(jlong, long, Long) 2687 DEFINE_GETFIELD(jfloat, float, Float) 2688 DEFINE_GETFIELD(jdouble, double, Double) 2689 2690 #else /* USDT2 */ 2691 2692 #define DEFINE_GETFIELD(Return,Fieldname,Result \ 2693 , EntryProbe, ReturnProbe) \ 2694 \ 2695 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \ 2696 , ReturnProbe); \ 2697 \ 2698 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2699 JNIWrapper("Get" XSTR(Result) "Field"); \ 2700 \ 2701 EntryProbe; \ 2702 Return ret = 0;\ 2703 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2704 \ 2705 oop o = JNIHandles::resolve_non_null(obj); \ 2706 Klass* k = o->klass(); \ 2707 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2708 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2709 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2710 /* and creates a ResetNoHandleMark. */ \ 2711 if (JvmtiExport::should_post_field_access()) { \ 2712 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2713 } \ 2714 ret = o->Fieldname##_field(offset); \ 2715 return ret; \ 2716 JNI_END 2717 2718 DEFINE_GETFIELD(jboolean, bool, Boolean 2719 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2720 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref)) 2721 DEFINE_GETFIELD(jbyte, byte, Byte 2722 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2723 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref)) 2724 DEFINE_GETFIELD(jchar, char, Char 2725 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2726 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref)) 2727 DEFINE_GETFIELD(jshort, short, Short 2728 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2729 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref)) 2730 DEFINE_GETFIELD(jint, int, Int 2731 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2732 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref)) 2733 DEFINE_GETFIELD(jlong, long, Long 2734 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2735 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref)) 2736 // Float and double probes don't return value because dtrace doesn't currently support it 2737 DEFINE_GETFIELD(jfloat, float, Float 2738 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2739 HOTSPOT_JNI_GETFLOATFIELD_RETURN()) 2740 DEFINE_GETFIELD(jdouble, double, Double 2741 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2742 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN()) 2743 #endif /* USDT2 */ 2744 2745 address jni_GetBooleanField_addr() { 2746 return (address)jni_GetBooleanField; 2747 } 2748 address jni_GetByteField_addr() { 2749 return (address)jni_GetByteField; 2750 } 2751 address jni_GetCharField_addr() { 2752 return (address)jni_GetCharField; 2753 } 2754 address jni_GetShortField_addr() { 2755 return (address)jni_GetShortField; 2756 } 2757 address jni_GetIntField_addr() { 2758 return (address)jni_GetIntField; 2759 } 2760 address jni_GetLongField_addr() { 2761 return (address)jni_GetLongField; 2762 } 2763 address jni_GetFloatField_addr() { 2764 return (address)jni_GetFloatField; 2765 } 2766 address jni_GetDoubleField_addr() { 2767 return (address)jni_GetDoubleField; 2768 } 2769 2770 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) 2771 JNIWrapper("SetObjectField"); 2772 #ifndef USDT2 2773 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); 2774 #else /* USDT2 */ 2775 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY( 2776 env, obj, (uintptr_t) fieldID, value); 2777 #endif /* USDT2 */ 2778 oop o = JNIHandles::resolve_non_null(obj); 2779 Klass* k = o->klass(); 2780 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2781 // Keep JVMTI addition small and only check enabled flag here. 2782 // jni_SetField_probe_nh() assumes that is not okay to create handles 2783 // and creates a ResetNoHandleMark. 2784 if (JvmtiExport::should_post_field_modification()) { 2785 jvalue field_value; 2786 field_value.l = value; 2787 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); 2788 } 2789 o->obj_field_put(offset, JNIHandles::resolve(value)); 2790 #ifndef USDT2 2791 DTRACE_PROBE(hotspot_jni, SetObjectField__return); 2792 #else /* USDT2 */ 2793 HOTSPOT_JNI_SETOBJECTFIELD_RETURN( 2794 ); 2795 #endif /* USDT2 */ 2796 JNI_END 2797 2798 #ifndef USDT2 2799 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ 2800 \ 2801 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2802 JNIWrapper("Set" XSTR(Result) "Field"); \ 2803 \ 2804 FP_SELECT_##Result( \ 2805 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \ 2806 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \ 2807 \ 2808 oop o = JNIHandles::resolve_non_null(obj); \ 2809 Klass* k = o->klass(); \ 2810 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2811 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2812 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2813 /* and creates a ResetNoHandleMark. */ \ 2814 if (JvmtiExport::should_post_field_modification()) { \ 2815 jvalue field_value; \ 2816 field_value.unionType = value; \ 2817 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2818 } \ 2819 o->Fieldname##_field_put(offset, value); \ 2820 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ 2821 JNI_END 2822 2823 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) 2824 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) 2825 DEFINE_SETFIELD(jchar, char, Char, 'C', c) 2826 DEFINE_SETFIELD(jshort, short, Short, 'S', s) 2827 DEFINE_SETFIELD(jint, int, Int, 'I', i) 2828 DEFINE_SETFIELD(jlong, long, Long, 'J', j) 2829 DEFINE_SETFIELD(jfloat, float, Float, 'F', f) 2830 DEFINE_SETFIELD(jdouble, double, Double, 'D', d) 2831 2832 #else /* USDT2 */ 2833 2834 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \ 2835 , EntryProbe, ReturnProbe) \ 2836 \ 2837 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2838 JNIWrapper("Set" XSTR(Result) "Field"); \ 2839 \ 2840 EntryProbe; \ 2841 \ 2842 oop o = JNIHandles::resolve_non_null(obj); \ 2843 Klass* k = o->klass(); \ 2844 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2845 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2846 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2847 /* and creates a ResetNoHandleMark. */ \ 2848 if (JvmtiExport::should_post_field_modification()) { \ 2849 jvalue field_value; \ 2850 field_value.unionType = value; \ 2851 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2852 } \ 2853 if (SigType == 'Z') { value = ((jboolean)value) & 1; } \ 2854 o->Fieldname##_field_put(offset, value); \ 2855 ReturnProbe; \ 2856 JNI_END 2857 2858 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z 2859 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2860 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 2861 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b 2862 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2863 HOTSPOT_JNI_SETBYTEFIELD_RETURN()) 2864 DEFINE_SETFIELD(jchar, char, Char, 'C', c 2865 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2866 HOTSPOT_JNI_SETCHARFIELD_RETURN()) 2867 DEFINE_SETFIELD(jshort, short, Short, 'S', s 2868 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2869 HOTSPOT_JNI_SETSHORTFIELD_RETURN()) 2870 DEFINE_SETFIELD(jint, int, Int, 'I', i 2871 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2872 HOTSPOT_JNI_SETINTFIELD_RETURN()) 2873 DEFINE_SETFIELD(jlong, long, Long, 'J', j 2874 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2875 HOTSPOT_JNI_SETLONGFIELD_RETURN()) 2876 // Float and double probes don't return value because dtrace doesn't currently support it 2877 DEFINE_SETFIELD(jfloat, float, Float, 'F', f 2878 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2879 HOTSPOT_JNI_SETFLOATFIELD_RETURN()) 2880 DEFINE_SETFIELD(jdouble, double, Double, 'D', d 2881 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2882 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN()) 2883 #endif /* USDT2 */ 2884 2885 #ifndef USDT2 2886 DT_RETURN_MARK_DECL(ToReflectedField, jobject); 2887 #else /* USDT2 */ 2888 DT_RETURN_MARK_DECL(ToReflectedField, jobject 2889 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref)); 2890 #endif /* USDT2 */ 2891 2892 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) 2893 JNIWrapper("ToReflectedField"); 2894 #ifndef USDT2 2895 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, 2896 env, cls, fieldID, isStatic); 2897 #else /* USDT2 */ 2898 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY( 2899 env, cls, (uintptr_t) fieldID, isStatic); 2900 #endif /* USDT2 */ 2901 jobject ret = NULL; 2902 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); 2903 2904 fieldDescriptor fd; 2905 bool found = false; 2906 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); 2907 2908 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); 2909 2910 if (isStatic) { 2911 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*. 2912 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2913 assert(id->is_static_field_id(), "invalid static field id"); 2914 found = id->find_local_field(&fd); 2915 } else { 2916 // Non-static field. The fieldID is really the offset of the field within the instanceOop. 2917 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2918 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); 2919 } 2920 assert(found, "bad fieldID passed into jni_ToReflectedField"); 2921 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); 2922 ret = JNIHandles::make_local(env, reflected); 2923 return ret; 2924 JNI_END 2925 2926 2927 // 2928 // Accessing Static Fields 2929 // 2930 #ifndef USDT2 2931 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); 2932 #else /* USDT2 */ 2933 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID 2934 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref)); 2935 #endif /* USDT2 */ 2936 2937 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, 2938 const char *name, const char *sig)) 2939 JNIWrapper("GetStaticFieldID"); 2940 #ifndef USDT2 2941 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); 2942 #else /* USDT2 */ 2943 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY( 2944 env, clazz, (char *) name, (char *) sig); 2945 #endif /* USDT2 */ 2946 jfieldID ret = NULL; 2947 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); 2948 2949 // The class should have been loaded (we have an instance of the class 2950 // passed in) so the field and signature should already be in the symbol 2951 // table. If they're not there, the field doesn't exist. 2952 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2953 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2954 if (fieldname == NULL || signame == NULL) { 2955 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2956 } 2957 KlassHandle k(THREAD, 2958 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2959 // Make sure class is initialized before handing id's out to static fields 2960 k()->initialize(CHECK_NULL); 2961 2962 fieldDescriptor fd; 2963 if (!k()->oop_is_instance() || 2964 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) { 2965 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2966 } 2967 2968 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 2969 JNIid* id = fd.field_holder()->jni_id_for(fd.offset()); 2970 debug_only(id->set_is_static_field_id();) 2971 2972 debug_only(id->verify(fd.field_holder())); 2973 2974 ret = jfieldIDWorkaround::to_static_jfieldID(id); 2975 return ret; 2976 JNI_END 2977 2978 2979 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) 2980 JNIWrapper("GetStaticObjectField"); 2981 #ifndef USDT2 2982 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); 2983 #else /* USDT2 */ 2984 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY( 2985 env, clazz, (uintptr_t) fieldID); 2986 #endif /* USDT2 */ 2987 #if INCLUDE_JNI_CHECK 2988 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);) 2989 #endif // INCLUDE_JNI_CHECK 2990 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2991 assert(id->is_static_field_id(), "invalid static field id"); 2992 // Keep JVMTI addition small and only check enabled flag here. 2993 // jni_GetField_probe() assumes that is okay to create handles. 2994 if (JvmtiExport::should_post_field_access()) { 2995 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); 2996 } 2997 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset())); 2998 #ifndef USDT2 2999 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); 3000 #else /* USDT2 */ 3001 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN( 3002 ret); 3003 #endif /* USDT2 */ 3004 return ret; 3005 JNI_END 3006 3007 #ifndef USDT2 3008 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ 3009 \ 3010 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ 3011 \ 3012 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3013 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3014 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ 3015 Return ret = 0;\ 3016 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3017 (const Return&)ret);\ 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_GetField_probe() assumes that is okay to create handles. */ \ 3022 if (JvmtiExport::should_post_field_access()) { \ 3023 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3024 } \ 3025 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3026 return ret;\ 3027 JNI_END 3028 3029 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) 3030 DEFINE_GETSTATICFIELD(jbyte, byte, Byte) 3031 DEFINE_GETSTATICFIELD(jchar, char, Char) 3032 DEFINE_GETSTATICFIELD(jshort, short, Short) 3033 DEFINE_GETSTATICFIELD(jint, int, Int) 3034 DEFINE_GETSTATICFIELD(jlong, long, Long) 3035 DEFINE_GETSTATICFIELD(jfloat, float, Float) 3036 DEFINE_GETSTATICFIELD(jdouble, double, Double) 3037 3038 #else /* USDT2 */ 3039 3040 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \ 3041 , EntryProbe, ReturnProbe) \ 3042 \ 3043 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \ 3044 , ReturnProbe); \ 3045 \ 3046 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3047 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3048 EntryProbe; \ 3049 Return ret = 0;\ 3050 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3051 (const Return&)ret);\ 3052 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3053 assert(id->is_static_field_id(), "invalid static field id"); \ 3054 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3055 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3056 if (JvmtiExport::should_post_field_access()) { \ 3057 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3058 } \ 3059 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3060 return ret;\ 3061 JNI_END 3062 3063 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean 3064 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref)) 3065 DEFINE_GETSTATICFIELD(jbyte, byte, Byte 3066 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) ) 3067 DEFINE_GETSTATICFIELD(jchar, char, Char 3068 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) ) 3069 DEFINE_GETSTATICFIELD(jshort, short, Short 3070 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) ) 3071 DEFINE_GETSTATICFIELD(jint, int, Int 3072 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) ) 3073 DEFINE_GETSTATICFIELD(jlong, long, Long 3074 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) ) 3075 // Float and double probes don't return value because dtrace doesn't currently support it 3076 DEFINE_GETSTATICFIELD(jfloat, float, Float 3077 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() ) 3078 DEFINE_GETSTATICFIELD(jdouble, double, Double 3079 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() ) 3080 #endif /* USDT2 */ 3081 3082 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) 3083 JNIWrapper("SetStaticObjectField"); 3084 #ifndef USDT2 3085 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); 3086 #else /* USDT2 */ 3087 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY( 3088 env, clazz, (uintptr_t) fieldID, value); 3089 #endif /* USDT2 */ 3090 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3091 assert(id->is_static_field_id(), "invalid static field id"); 3092 // Keep JVMTI addition small and only check enabled flag here. 3093 // jni_SetField_probe() assumes that is okay to create handles. 3094 if (JvmtiExport::should_post_field_modification()) { 3095 jvalue field_value; 3096 field_value.l = value; 3097 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); 3098 } 3099 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value)); 3100 #ifndef USDT2 3101 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); 3102 #else /* USDT2 */ 3103 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN( 3104 ); 3105 #endif /* USDT2 */ 3106 JNI_END 3107 3108 3109 #ifndef USDT2 3110 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ 3111 \ 3112 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3113 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3114 FP_SELECT_##Result( \ 3115 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \ 3116 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \ 3117 \ 3118 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3119 assert(id->is_static_field_id(), "invalid static field id"); \ 3120 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3121 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3122 if (JvmtiExport::should_post_field_modification()) { \ 3123 jvalue field_value; \ 3124 field_value.unionType = value; \ 3125 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3126 } \ 3127 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3128 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\ 3129 JNI_END 3130 3131 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z) 3132 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b) 3133 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c) 3134 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s) 3135 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i) 3136 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j) 3137 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f) 3138 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d) 3139 3140 #else /* USDT2 */ 3141 3142 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \ 3143 , EntryProbe, ReturnProbe) \ 3144 \ 3145 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3146 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3147 EntryProbe; \ 3148 \ 3149 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3150 assert(id->is_static_field_id(), "invalid static field id"); \ 3151 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3152 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3153 if (JvmtiExport::should_post_field_modification()) { \ 3154 jvalue field_value; \ 3155 field_value.unionType = value; \ 3156 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3157 } \ 3158 if (SigType == 'Z') { value = ((jboolean)value) & 1; } \ 3159 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3160 ReturnProbe;\ 3161 JNI_END 3162 3163 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z 3164 , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value), 3165 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 3166 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b 3167 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3168 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN()) 3169 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c 3170 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3171 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN()) 3172 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s 3173 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3174 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN()) 3175 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i 3176 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3177 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN()) 3178 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j 3179 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3180 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN()) 3181 // Float and double probes don't return value because dtrace doesn't currently support it 3182 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f 3183 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3184 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN()) 3185 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d 3186 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3187 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN()) 3188 #endif /* USDT2 */ 3189 3190 // 3191 // String Operations 3192 // 3193 3194 // Unicode Interface 3195 3196 #ifndef USDT2 3197 DT_RETURN_MARK_DECL(NewString, jstring); 3198 #else /* USDT2 */ 3199 DT_RETURN_MARK_DECL(NewString, jstring 3200 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref)); 3201 #endif /* USDT2 */ 3202 3203 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len)) 3204 JNIWrapper("NewString"); 3205 #ifndef USDT2 3206 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len); 3207 #else /* USDT2 */ 3208 HOTSPOT_JNI_NEWSTRING_ENTRY( 3209 env, (uint16_t *) unicodeChars, len); 3210 #endif /* USDT2 */ 3211 jstring ret = NULL; 3212 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret); 3213 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL); 3214 ret = (jstring) JNIHandles::make_local(env, string); 3215 return ret; 3216 JNI_END 3217 3218 3219 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string)) 3220 JNIWrapper("GetStringLength"); 3221 #ifndef USDT2 3222 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string); 3223 #else /* USDT2 */ 3224 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY( 3225 env, string); 3226 #endif /* USDT2 */ 3227 jsize ret = 0; 3228 oop s = JNIHandles::resolve_non_null(string); 3229 if (java_lang_String::value(s) != NULL) { 3230 ret = java_lang_String::length(s); 3231 } 3232 #ifndef USDT2 3233 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret); 3234 #else /* USDT2 */ 3235 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN( 3236 ret); 3237 #endif /* USDT2 */ 3238 return ret; 3239 JNI_END 3240 3241 3242 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars( 3243 JNIEnv *env, jstring string, jboolean *isCopy)) 3244 JNIWrapper("GetStringChars"); 3245 #ifndef USDT2 3246 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy); 3247 #else /* USDT2 */ 3248 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY( 3249 env, string, (uintptr_t *) isCopy); 3250 #endif /* USDT2 */ 3251 jchar* buf = NULL; 3252 oop s = JNIHandles::resolve_non_null(string); 3253 typeArrayOop s_value = java_lang_String::value(s); 3254 if (s_value != NULL) { 3255 int s_len = java_lang_String::length(s); 3256 int s_offset = java_lang_String::offset(s); 3257 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination 3258 /* JNI Specification states return NULL on OOM */ 3259 if (buf != NULL) { 3260 if (s_len > 0) { 3261 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len); 3262 } 3263 buf[s_len] = 0; 3264 //%note jni_5 3265 if (isCopy != NULL) { 3266 *isCopy = JNI_TRUE; 3267 } 3268 } 3269 } 3270 #ifndef USDT2 3271 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf); 3272 #else /* USDT2 */ 3273 HOTSPOT_JNI_GETSTRINGCHARS_RETURN( 3274 buf); 3275 #endif /* USDT2 */ 3276 return buf; 3277 JNI_END 3278 3279 3280 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)) 3281 JNIWrapper("ReleaseStringChars"); 3282 #ifndef USDT2 3283 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars); 3284 #else /* USDT2 */ 3285 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY( 3286 env, str, (uint16_t *) chars); 3287 #endif /* USDT2 */ 3288 //%note jni_6 3289 if (chars != NULL) { 3290 // Since String objects are supposed to be immutable, don't copy any 3291 // new data back. A bad user will have to go after the char array. 3292 FreeHeap((void*) chars); 3293 } 3294 #ifndef USDT2 3295 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return); 3296 #else /* USDT2 */ 3297 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN( 3298 ); 3299 #endif /* USDT2 */ 3300 JNI_END 3301 3302 3303 // UTF Interface 3304 3305 #ifndef USDT2 3306 DT_RETURN_MARK_DECL(NewStringUTF, jstring); 3307 #else /* USDT2 */ 3308 DT_RETURN_MARK_DECL(NewStringUTF, jstring 3309 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref)); 3310 #endif /* USDT2 */ 3311 3312 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes)) 3313 JNIWrapper("NewStringUTF"); 3314 #ifndef USDT2 3315 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes); 3316 #else /* USDT2 */ 3317 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY( 3318 env, (char *) bytes); 3319 #endif /* USDT2 */ 3320 jstring ret; 3321 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret); 3322 3323 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL); 3324 ret = (jstring) JNIHandles::make_local(env, result); 3325 return ret; 3326 JNI_END 3327 3328 3329 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string)) 3330 JNIWrapper("GetStringUTFLength"); 3331 #ifndef USDT2 3332 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string); 3333 #else /* USDT2 */ 3334 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY( 3335 env, string); 3336 #endif /* USDT2 */ 3337 jsize ret = 0; 3338 oop java_string = JNIHandles::resolve_non_null(string); 3339 if (java_lang_String::value(java_string) != NULL) { 3340 ret = java_lang_String::utf8_length(java_string); 3341 } 3342 #ifndef USDT2 3343 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret); 3344 #else /* USDT2 */ 3345 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN( 3346 ret); 3347 #endif /* USDT2 */ 3348 return ret; 3349 JNI_END 3350 3351 3352 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)) 3353 JNIWrapper("GetStringUTFChars"); 3354 #ifndef USDT2 3355 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy); 3356 #else /* USDT2 */ 3357 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY( 3358 env, string, (uintptr_t *) isCopy); 3359 #endif /* USDT2 */ 3360 char* result = NULL; 3361 oop java_string = JNIHandles::resolve_non_null(string); 3362 if (java_lang_String::value(java_string) != NULL) { 3363 size_t length = java_lang_String::utf8_length(java_string); 3364 /* JNI Specification states return NULL on OOM */ 3365 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL); 3366 if (result != NULL) { 3367 java_lang_String::as_utf8_string(java_string, result, (int) length + 1); 3368 if (isCopy != NULL) { 3369 *isCopy = JNI_TRUE; 3370 } 3371 } 3372 } 3373 #ifndef USDT2 3374 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result); 3375 #else /* USDT2 */ 3376 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN( 3377 result); 3378 #endif /* USDT2 */ 3379 return result; 3380 JNI_END 3381 3382 3383 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars)) 3384 JNIWrapper("ReleaseStringUTFChars"); 3385 #ifndef USDT2 3386 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars); 3387 #else /* USDT2 */ 3388 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY( 3389 env, str, (char *) chars); 3390 #endif /* USDT2 */ 3391 if (chars != NULL) { 3392 FreeHeap((char*) chars); 3393 } 3394 #ifndef USDT2 3395 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return); 3396 #else /* USDT2 */ 3397 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN( 3398 ); 3399 #endif /* USDT2 */ 3400 JNI_END 3401 3402 3403 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array)) 3404 JNIWrapper("GetArrayLength"); 3405 #ifndef USDT2 3406 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array); 3407 #else /* USDT2 */ 3408 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY( 3409 env, array); 3410 #endif /* USDT2 */ 3411 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array)); 3412 assert(a->is_array(), "must be array"); 3413 jsize ret = a->length(); 3414 #ifndef USDT2 3415 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret); 3416 #else /* USDT2 */ 3417 HOTSPOT_JNI_GETARRAYLENGTH_RETURN( 3418 ret); 3419 #endif /* USDT2 */ 3420 return ret; 3421 JNI_END 3422 3423 3424 // 3425 // Object Array Operations 3426 // 3427 3428 #ifndef USDT2 3429 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray); 3430 #else /* USDT2 */ 3431 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray 3432 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref)); 3433 #endif /* USDT2 */ 3434 3435 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement)) 3436 JNIWrapper("NewObjectArray"); 3437 #ifndef USDT2 3438 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement); 3439 #else /* USDT2 */ 3440 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY( 3441 env, length, elementClass, initialElement); 3442 #endif /* USDT2 */ 3443 jobjectArray ret = NULL; 3444 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret); 3445 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass))); 3446 Klass* ako = ek()->array_klass(CHECK_NULL); 3447 KlassHandle ak = KlassHandle(THREAD, ako); 3448 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL); 3449 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL); 3450 oop initial_value = JNIHandles::resolve(initialElement); 3451 if (initial_value != NULL) { // array already initialized with NULL 3452 for (int index = 0; index < length; index++) { 3453 result->obj_at_put(index, initial_value); 3454 } 3455 } 3456 ret = (jobjectArray) JNIHandles::make_local(env, result); 3457 return ret; 3458 JNI_END 3459 3460 #ifndef USDT2 3461 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject); 3462 #else /* USDT2 */ 3463 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject 3464 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref)); 3465 #endif /* USDT2 */ 3466 3467 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index)) 3468 JNIWrapper("GetObjectArrayElement"); 3469 #ifndef USDT2 3470 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index); 3471 #else /* USDT2 */ 3472 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY( 3473 env, array, index); 3474 #endif /* USDT2 */ 3475 jobject ret = NULL; 3476 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret); 3477 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3478 if (a->is_within_bounds(index)) { 3479 ret = JNIHandles::make_local(env, a->obj_at(index)); 3480 return ret; 3481 } else { 3482 char buf[jintAsStringSize]; 3483 sprintf(buf, "%d", index); 3484 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3485 } 3486 JNI_END 3487 3488 #ifndef USDT2 3489 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement); 3490 #else /* USDT2 */ 3491 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement 3492 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN()); 3493 #endif /* USDT2 */ 3494 3495 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value)) 3496 JNIWrapper("SetObjectArrayElement"); 3497 #ifndef USDT2 3498 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value); 3499 #else /* USDT2 */ 3500 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY( 3501 env, array, index, value); 3502 #endif /* USDT2 */ 3503 DT_VOID_RETURN_MARK(SetObjectArrayElement); 3504 3505 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3506 oop v = JNIHandles::resolve(value); 3507 if (a->is_within_bounds(index)) { 3508 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) { 3509 a->obj_at_put(index, v); 3510 } else { 3511 THROW(vmSymbols::java_lang_ArrayStoreException()); 3512 } 3513 } else { 3514 char buf[jintAsStringSize]; 3515 sprintf(buf, "%d", index); 3516 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3517 } 3518 JNI_END 3519 3520 3521 #ifndef USDT2 3522 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \ 3523 \ 3524 DT_RETURN_MARK_DECL(New##Result##Array, Return); \ 3525 \ 3526 JNI_ENTRY(Return, \ 3527 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3528 JNIWrapper("New" XSTR(Result) "Array"); \ 3529 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\ 3530 Return ret = NULL;\ 3531 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3532 \ 3533 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3534 ret = (Return) JNIHandles::make_local(env, obj); \ 3535 return ret;\ 3536 JNI_END 3537 3538 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean) 3539 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte) 3540 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short) 3541 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char) 3542 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int) 3543 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long) 3544 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float) 3545 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double) 3546 3547 #else /* USDT2 */ 3548 3549 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \ 3550 ,EntryProbe,ReturnProbe) \ 3551 \ 3552 DT_RETURN_MARK_DECL(New##Result##Array, Return \ 3553 , ReturnProbe); \ 3554 \ 3555 JNI_ENTRY(Return, \ 3556 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3557 JNIWrapper("New" XSTR(Result) "Array"); \ 3558 EntryProbe; \ 3559 Return ret = NULL;\ 3560 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3561 \ 3562 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3563 ret = (Return) JNIHandles::make_local(env, obj); \ 3564 return ret;\ 3565 JNI_END 3566 3567 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean, 3568 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len), 3569 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref)) 3570 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte, 3571 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len), 3572 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref)) 3573 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short, 3574 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len), 3575 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref)) 3576 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char, 3577 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len), 3578 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref)) 3579 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int, 3580 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len), 3581 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref)) 3582 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long, 3583 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len), 3584 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref)) 3585 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float, 3586 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len), 3587 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref)) 3588 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double, 3589 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len), 3590 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref)) 3591 #endif /* USDT2 */ 3592 3593 // Return an address which will fault if the caller writes to it. 3594 3595 static char* get_bad_address() { 3596 static char* bad_address = NULL; 3597 if (bad_address == NULL) { 3598 size_t size = os::vm_allocation_granularity(); 3599 bad_address = os::reserve_memory(size); 3600 if (bad_address != NULL) { 3601 os::protect_memory(bad_address, size, os::MEM_PROT_READ, 3602 /*is_committed*/false); 3603 MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal); 3604 } 3605 } 3606 return bad_address; 3607 } 3608 3609 3610 #ifndef USDT2 3611 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \ 3612 \ 3613 JNI_QUICK_ENTRY(ElementType*, \ 3614 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3615 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3616 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\ 3617 /* allocate an chunk of memory in c land */ \ 3618 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3619 ElementType* result; \ 3620 int len = a->length(); \ 3621 if (len == 0) { \ 3622 /* Empty array: legal but useless, can't return NULL. \ 3623 * Return a pointer to something useless. \ 3624 * Avoid asserts in typeArrayOop. */ \ 3625 result = (ElementType*)get_bad_address(); \ 3626 } else { \ 3627 /* JNI Specification states return NULL on OOM */ \ 3628 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \ 3629 if (result != NULL) { \ 3630 /* copy the array to the c chunk */ \ 3631 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3632 if (isCopy) { \ 3633 *isCopy = JNI_TRUE; \ 3634 } \ 3635 } \ 3636 } \ 3637 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\ 3638 return result; \ 3639 JNI_END 3640 3641 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3642 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3643 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3644 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3645 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int) 3646 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3647 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3648 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3649 3650 #else /* USDT2 */ 3651 3652 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \ 3653 , EntryProbe, ReturnProbe) \ 3654 \ 3655 JNI_QUICK_ENTRY(ElementType*, \ 3656 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3657 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3658 EntryProbe; \ 3659 /* allocate an chunk of memory in c land */ \ 3660 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3661 ElementType* result; \ 3662 int len = a->length(); \ 3663 if (len == 0) { \ 3664 /* Empty array: legal but useless, can't return NULL. \ 3665 * Return a pointer to something useless. \ 3666 * Avoid asserts in typeArrayOop. */ \ 3667 result = (ElementType*)get_bad_address(); \ 3668 } else { \ 3669 /* JNI Specification states return NULL on OOM */ \ 3670 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \ 3671 if (result != NULL) { \ 3672 /* copy the array to the c chunk */ \ 3673 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3674 if (isCopy) { \ 3675 *isCopy = JNI_TRUE; \ 3676 } \ 3677 } \ 3678 } \ 3679 ReturnProbe; \ 3680 return result; \ 3681 JNI_END 3682 3683 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3684 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3685 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result)) 3686 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3687 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3688 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result)) 3689 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3690 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3691 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result)) 3692 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3693 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3694 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result)) 3695 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int 3696 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3697 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result)) 3698 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3699 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3700 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result))) 3701 // Float and double probes don't return value because dtrace doesn't currently support it 3702 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3703 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3704 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result)) 3705 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3706 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3707 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result)) 3708 #endif /* USDT2 */ 3709 3710 #ifndef USDT2 3711 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \ 3712 \ 3713 JNI_QUICK_ENTRY(void, \ 3714 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3715 ElementType *buf, jint mode)) \ 3716 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3717 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\ 3718 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3719 int len = a->length(); \ 3720 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3721 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3722 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3723 } \ 3724 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3725 FreeHeap(buf); \ 3726 } \ 3727 } \ 3728 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\ 3729 JNI_END 3730 3731 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3732 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3733 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3734 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3735 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int) 3736 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3737 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3738 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3739 3740 #else /* USDT2 */ 3741 3742 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \ 3743 , EntryProbe, ReturnProbe);\ 3744 \ 3745 JNI_QUICK_ENTRY(void, \ 3746 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3747 ElementType *buf, jint mode)) \ 3748 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3749 EntryProbe; \ 3750 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3751 int len = a->length(); \ 3752 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3753 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3754 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3755 } \ 3756 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3757 FreeHeap(buf); \ 3758 } \ 3759 } \ 3760 ReturnProbe; \ 3761 JNI_END 3762 3763 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3764 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3765 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN()) 3766 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3767 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode), 3768 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN()) 3769 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3770 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3771 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN()) 3772 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3773 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3774 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN()) 3775 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int 3776 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode), 3777 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN()) 3778 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3779 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3780 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN()) 3781 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3782 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode), 3783 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN()) 3784 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3785 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode), 3786 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN()) 3787 #endif /* USDT2 */ 3788 3789 #ifndef USDT2 3790 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3791 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\ 3792 \ 3793 JNI_ENTRY(void, \ 3794 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3795 jsize len, ElementType *buf)) \ 3796 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3797 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3798 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3799 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3800 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3801 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3802 } else { \ 3803 if (len > 0) { \ 3804 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3805 memcpy((u_char*) buf, \ 3806 (u_char*) src->Tag##_at_addr(start), \ 3807 len << sc); \ 3808 } \ 3809 } \ 3810 JNI_END 3811 3812 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool) 3813 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3814 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3815 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3816 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int) 3817 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3818 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3819 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3820 3821 #else /* USDT2 */ 3822 3823 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3824 , EntryProbe, ReturnProbe); \ 3825 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \ 3826 , ReturnProbe); \ 3827 \ 3828 JNI_ENTRY(void, \ 3829 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3830 jsize len, ElementType *buf)) \ 3831 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3832 EntryProbe; \ 3833 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3834 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3835 if (start < 0 || len < 0 || (start > src->length() - len)) { \ 3836 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3837 } else { \ 3838 if (len > 0) { \ 3839 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3840 memcpy((u_char*) buf, \ 3841 (u_char*) src->Tag##_at_addr(start), \ 3842 len << sc); \ 3843 } \ 3844 } \ 3845 JNI_END 3846 3847 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool 3848 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3849 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN()); 3850 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3851 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3852 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN()); 3853 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3854 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3855 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN()); 3856 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3857 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf), 3858 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN()); 3859 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int 3860 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf), 3861 HOTSPOT_JNI_GETINTARRAYREGION_RETURN()); 3862 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long 3863 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3864 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN()); 3865 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3866 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3867 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN()); 3868 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3869 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3870 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN()); 3871 #endif /* USDT2 */ 3872 3873 #ifndef USDT2 3874 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3875 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\ 3876 \ 3877 JNI_ENTRY(void, \ 3878 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3879 jsize len, const ElementType *buf)) \ 3880 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3881 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3882 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3883 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3884 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3885 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3886 } else { \ 3887 if (len > 0) { \ 3888 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3889 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3890 (u_char*) buf, \ 3891 len << sc); \ 3892 } \ 3893 } \ 3894 JNI_END 3895 3896 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool) 3897 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3898 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3899 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3900 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int) 3901 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3902 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3903 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3904 3905 #else /* USDT2 */ 3906 3907 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3908 , EntryProbe, ReturnProbe); \ 3909 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \ 3910 ,ReturnProbe); \ 3911 \ 3912 JNI_ENTRY(void, \ 3913 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3914 jsize len, const ElementType *buf)) \ 3915 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3916 EntryProbe; \ 3917 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3918 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3919 if (start < 0 || len < 0 || (start > dst->length() - len)) { \ 3920 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3921 } else { \ 3922 if (len > 0) { \ 3923 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3924 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3925 (u_char*) buf, \ 3926 len << sc); \ 3927 } \ 3928 } \ 3929 JNI_END 3930 3931 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool 3932 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf), 3933 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN()) 3934 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3935 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3936 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN()) 3937 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3938 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3939 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN()) 3940 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3941 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3942 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN()) 3943 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int 3944 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf), 3945 HOTSPOT_JNI_SETINTARRAYREGION_RETURN()) 3946 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long 3947 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3948 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN()) 3949 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3950 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3951 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN()) 3952 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3953 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3954 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN()) 3955 #endif /* USDT2 */ 3956 3957 3958 // 3959 // Interception of natives 3960 // 3961 3962 // The RegisterNatives call being attempted tried to register with a method that 3963 // is not native. Ask JVM TI what prefixes have been specified. Then check 3964 // to see if the native method is now wrapped with the prefixes. See the 3965 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details. 3966 static Method* find_prefixed_native(KlassHandle k, 3967 Symbol* name, Symbol* signature, TRAPS) { 3968 #if INCLUDE_JVMTI 3969 ResourceMark rm(THREAD); 3970 Method* method; 3971 int name_len = name->utf8_length(); 3972 char* name_str = name->as_utf8(); 3973 int prefix_count; 3974 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); 3975 for (int i = 0; i < prefix_count; i++) { 3976 char* prefix = prefixes[i]; 3977 int prefix_len = (int)strlen(prefix); 3978 3979 // try adding this prefix to the method name and see if it matches another method name 3980 int trial_len = name_len + prefix_len; 3981 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1); 3982 strcpy(trial_name_str, prefix); 3983 strcat(trial_name_str, name_str); 3984 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len); 3985 if (trial_name == NULL) { 3986 continue; // no such symbol, so this prefix wasn't used, try the next prefix 3987 } 3988 method = k()->lookup_method(trial_name, signature); 3989 if (method == NULL) { 3990 continue; // signature doesn't match, try the next prefix 3991 } 3992 if (method->is_native()) { 3993 method->set_is_prefixed_native(); 3994 return method; // wahoo, we found a prefixed version of the method, return it 3995 } 3996 // found as non-native, so prefix is good, add it, probably just need more prefixes 3997 name_len = trial_len; 3998 name_str = trial_name_str; 3999 } 4000 #endif // INCLUDE_JVMTI 4001 return NULL; // not found 4002 } 4003 4004 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) { 4005 Method* method = k()->lookup_method(name, signature); 4006 if (method == NULL) { 4007 ResourceMark rm; 4008 stringStream st; 4009 st.print("Method %s name or signature does not match", 4010 Method::name_and_sig_as_C_string(k(), name, signature)); 4011 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 4012 } 4013 if (!method->is_native()) { 4014 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es) 4015 method = find_prefixed_native(k, name, signature, THREAD); 4016 if (method == NULL) { 4017 ResourceMark rm; 4018 stringStream st; 4019 st.print("Method %s is not declared as native", 4020 Method::name_and_sig_as_C_string(k(), name, signature)); 4021 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 4022 } 4023 } 4024 4025 if (entry != NULL) { 4026 method->set_native_function(entry, 4027 Method::native_bind_event_is_interesting); 4028 } else { 4029 method->clear_native_function(); 4030 } 4031 if (PrintJNIResolving) { 4032 ResourceMark rm(THREAD); 4033 tty->print_cr("[Registering JNI native method %s.%s]", 4034 method->method_holder()->external_name(), 4035 method->name()->as_C_string()); 4036 } 4037 return true; 4038 } 4039 4040 #ifndef USDT2 4041 DT_RETURN_MARK_DECL(RegisterNatives, jint); 4042 #else /* USDT2 */ 4043 DT_RETURN_MARK_DECL(RegisterNatives, jint 4044 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref)); 4045 #endif /* USDT2 */ 4046 4047 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz, 4048 const JNINativeMethod *methods, 4049 jint nMethods)) 4050 JNIWrapper("RegisterNatives"); 4051 #ifndef USDT2 4052 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods); 4053 #else /* USDT2 */ 4054 HOTSPOT_JNI_REGISTERNATIVES_ENTRY( 4055 env, clazz, (void *) methods, nMethods); 4056 #endif /* USDT2 */ 4057 jint ret = 0; 4058 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret); 4059 4060 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 4061 4062 for (int index = 0; index < nMethods; index++) { 4063 const char* meth_name = methods[index].name; 4064 const char* meth_sig = methods[index].signature; 4065 int meth_name_len = (int)strlen(meth_name); 4066 4067 // The class should have been loaded (we have an instance of the class 4068 // passed in) so the method and signature should already be in the symbol 4069 // table. If they're not there, the method doesn't exist. 4070 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len); 4071 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig)); 4072 4073 if (name == NULL || signature == NULL) { 4074 ResourceMark rm; 4075 stringStream st; 4076 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig); 4077 // Must return negative value on failure 4078 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1); 4079 } 4080 4081 bool res = register_native(h_k, name, signature, 4082 (address) methods[index].fnPtr, THREAD); 4083 if (!res) { 4084 ret = -1; 4085 break; 4086 } 4087 } 4088 return ret; 4089 JNI_END 4090 4091 4092 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz)) 4093 JNIWrapper("UnregisterNatives"); 4094 #ifndef USDT2 4095 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz); 4096 #else /* USDT2 */ 4097 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY( 4098 env, clazz); 4099 #endif /* USDT2 */ 4100 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 4101 //%note jni_2 4102 if (k->oop_is_instance()) { 4103 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) { 4104 Method* m = InstanceKlass::cast(k)->methods()->at(index); 4105 if (m->is_native()) { 4106 m->clear_native_function(); 4107 m->set_signature_handler(NULL); 4108 } 4109 } 4110 } 4111 #ifndef USDT2 4112 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0); 4113 #else /* USDT2 */ 4114 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN( 4115 0); 4116 #endif /* USDT2 */ 4117 return 0; 4118 JNI_END 4119 4120 // 4121 // Monitor functions 4122 // 4123 4124 #ifndef USDT2 4125 DT_RETURN_MARK_DECL(MonitorEnter, jint); 4126 #else /* USDT2 */ 4127 DT_RETURN_MARK_DECL(MonitorEnter, jint 4128 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref)); 4129 #endif /* USDT2 */ 4130 4131 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj)) 4132 #ifndef USDT2 4133 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj); 4134 #else /* USDT2 */ 4135 HOTSPOT_JNI_MONITORENTER_ENTRY( 4136 env, jobj); 4137 #endif /* USDT2 */ 4138 jint ret = JNI_ERR; 4139 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret); 4140 4141 // If the object is null, we can't do anything with it 4142 if (jobj == NULL) { 4143 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4144 } 4145 4146 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); 4147 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR)); 4148 ret = JNI_OK; 4149 return ret; 4150 JNI_END 4151 4152 #ifndef USDT2 4153 DT_RETURN_MARK_DECL(MonitorExit, jint); 4154 #else /* USDT2 */ 4155 DT_RETURN_MARK_DECL(MonitorExit, jint 4156 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref)); 4157 #endif /* USDT2 */ 4158 4159 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj)) 4160 #ifndef USDT2 4161 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj); 4162 #else /* USDT2 */ 4163 HOTSPOT_JNI_MONITOREXIT_ENTRY( 4164 env, jobj); 4165 #endif /* USDT2 */ 4166 jint ret = JNI_ERR; 4167 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret); 4168 4169 // Don't do anything with a null object 4170 if (jobj == NULL) { 4171 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4172 } 4173 4174 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); 4175 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR)); 4176 4177 ret = JNI_OK; 4178 return ret; 4179 JNI_END 4180 4181 // 4182 // Extensions 4183 // 4184 4185 #ifndef USDT2 4186 DT_VOID_RETURN_MARK_DECL(GetStringRegion); 4187 #else /* USDT2 */ 4188 DT_VOID_RETURN_MARK_DECL(GetStringRegion 4189 , HOTSPOT_JNI_GETSTRINGREGION_RETURN()); 4190 #endif /* USDT2 */ 4191 4192 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf)) 4193 JNIWrapper("GetStringRegion"); 4194 #ifndef USDT2 4195 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf); 4196 #else /* USDT2 */ 4197 HOTSPOT_JNI_GETSTRINGREGION_ENTRY( 4198 env, string, start, len, buf); 4199 #endif /* USDT2 */ 4200 DT_VOID_RETURN_MARK(GetStringRegion); 4201 oop s = JNIHandles::resolve_non_null(string); 4202 int s_len = java_lang_String::length(s); 4203 if (start < 0 || len < 0 || start > s_len - len) { 4204 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4205 } else { 4206 if (len > 0) { 4207 int s_offset = java_lang_String::offset(s); 4208 typeArrayOop s_value = java_lang_String::value(s); 4209 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len); 4210 } 4211 } 4212 JNI_END 4213 4214 #ifndef USDT2 4215 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion); 4216 #else /* USDT2 */ 4217 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion 4218 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN()); 4219 #endif /* USDT2 */ 4220 4221 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf)) 4222 JNIWrapper("GetStringUTFRegion"); 4223 #ifndef USDT2 4224 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf); 4225 #else /* USDT2 */ 4226 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY( 4227 env, string, start, len, buf); 4228 #endif /* USDT2 */ 4229 DT_VOID_RETURN_MARK(GetStringUTFRegion); 4230 oop s = JNIHandles::resolve_non_null(string); 4231 int s_len = java_lang_String::length(s); 4232 if (start < 0 || len < 0 || start > s_len - len) { 4233 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4234 } else { 4235 //%note jni_7 4236 if (len > 0) { 4237 ResourceMark rm(THREAD); 4238 char *utf_region = java_lang_String::as_utf8_string(s, start, len); 4239 int utf_len = (int)strlen(utf_region); 4240 memcpy(buf, utf_region, utf_len); 4241 buf[utf_len] = 0; 4242 } else { 4243 // JDK null-terminates the buffer even in len is zero 4244 if (buf != NULL) { 4245 buf[0] = 0; 4246 } 4247 } 4248 } 4249 JNI_END 4250 4251 4252 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)) 4253 JNIWrapper("GetPrimitiveArrayCritical"); 4254 #ifndef USDT2 4255 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy); 4256 #else /* USDT2 */ 4257 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY( 4258 env, array, (uintptr_t *) isCopy); 4259 #endif /* USDT2 */ 4260 GC_locker::lock_critical(thread); 4261 if (isCopy != NULL) { 4262 *isCopy = JNI_FALSE; 4263 } 4264 oop a = JNIHandles::resolve_non_null(array); 4265 assert(a->is_array(), "just checking"); 4266 BasicType type; 4267 if (a->is_objArray()) { 4268 type = T_OBJECT; 4269 } else { 4270 type = TypeArrayKlass::cast(a->klass())->element_type(); 4271 } 4272 void* ret = arrayOop(a)->base(type); 4273 #ifndef USDT2 4274 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret); 4275 #else /* USDT2 */ 4276 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN( 4277 ret); 4278 #endif /* USDT2 */ 4279 return ret; 4280 JNI_END 4281 4282 4283 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)) 4284 JNIWrapper("ReleasePrimitiveArrayCritical"); 4285 #ifndef USDT2 4286 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode); 4287 #else /* USDT2 */ 4288 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY( 4289 env, array, carray, mode); 4290 #endif /* USDT2 */ 4291 // The array, carray and mode arguments are ignored 4292 GC_locker::unlock_critical(thread); 4293 #ifndef USDT2 4294 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return); 4295 #else /* USDT2 */ 4296 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN( 4297 ); 4298 #endif /* USDT2 */ 4299 JNI_END 4300 4301 4302 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy)) 4303 JNIWrapper("GetStringCritical"); 4304 #ifndef USDT2 4305 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy); 4306 #else /* USDT2 */ 4307 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY( 4308 env, string, (uintptr_t *) isCopy); 4309 #endif /* USDT2 */ 4310 GC_locker::lock_critical(thread); 4311 if (isCopy != NULL) { 4312 *isCopy = JNI_FALSE; 4313 } 4314 oop s = JNIHandles::resolve_non_null(string); 4315 int s_len = java_lang_String::length(s); 4316 typeArrayOop s_value = java_lang_String::value(s); 4317 int s_offset = java_lang_String::offset(s); 4318 const jchar* ret; 4319 if (s_len > 0) { 4320 ret = s_value->char_at_addr(s_offset); 4321 } else { 4322 ret = (jchar*) s_value->base(T_CHAR); 4323 } 4324 #ifndef USDT2 4325 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret); 4326 #else /* USDT2 */ 4327 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN( 4328 (uint16_t *) ret); 4329 #endif /* USDT2 */ 4330 return ret; 4331 JNI_END 4332 4333 4334 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars)) 4335 JNIWrapper("ReleaseStringCritical"); 4336 #ifndef USDT2 4337 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars); 4338 #else /* USDT2 */ 4339 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY( 4340 env, str, (uint16_t *) chars); 4341 #endif /* USDT2 */ 4342 // The str and chars arguments are ignored 4343 GC_locker::unlock_critical(thread); 4344 #ifndef USDT2 4345 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return); 4346 #else /* USDT2 */ 4347 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN( 4348 ); 4349 #endif /* USDT2 */ 4350 JNI_END 4351 4352 4353 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref)) 4354 JNIWrapper("jni_NewWeakGlobalRef"); 4355 #ifndef USDT2 4356 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref); 4357 #else /* USDT2 */ 4358 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY( 4359 env, ref); 4360 #endif /* USDT2 */ 4361 Handle ref_handle(thread, JNIHandles::resolve(ref)); 4362 jweak ret = JNIHandles::make_weak_global(ref_handle); 4363 #ifndef USDT2 4364 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret); 4365 #else /* USDT2 */ 4366 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN( 4367 ret); 4368 #endif /* USDT2 */ 4369 return ret; 4370 JNI_END 4371 4372 // Must be JNI_ENTRY (with HandleMark) 4373 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref)) 4374 JNIWrapper("jni_DeleteWeakGlobalRef"); 4375 #ifndef USDT2 4376 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref); 4377 #else /* USDT2 */ 4378 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY( 4379 env, ref); 4380 #endif /* USDT2 */ 4381 JNIHandles::destroy_weak_global(ref); 4382 #ifndef USDT2 4383 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return); 4384 #else /* USDT2 */ 4385 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN( 4386 ); 4387 #endif /* USDT2 */ 4388 JNI_END 4389 4390 4391 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env)) 4392 JNIWrapper("jni_ExceptionCheck"); 4393 #ifndef USDT2 4394 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env); 4395 #else /* USDT2 */ 4396 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY( 4397 env); 4398 #endif /* USDT2 */ 4399 jni_check_async_exceptions(thread); 4400 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE; 4401 #ifndef USDT2 4402 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret); 4403 #else /* USDT2 */ 4404 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN( 4405 ret); 4406 #endif /* USDT2 */ 4407 return ret; 4408 JNI_END 4409 4410 4411 // Initialization state for three routines below relating to 4412 // java.nio.DirectBuffers 4413 static jint directBufferSupportInitializeStarted = 0; 4414 static volatile jint directBufferSupportInitializeEnded = 0; 4415 static volatile jint directBufferSupportInitializeFailed = 0; 4416 static jclass bufferClass = NULL; 4417 static jclass directBufferClass = NULL; 4418 static jclass directByteBufferClass = NULL; 4419 static jmethodID directByteBufferConstructor = NULL; 4420 static jfieldID directBufferAddressField = NULL; 4421 static jfieldID bufferCapacityField = NULL; 4422 4423 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) { 4424 Handle loader; // null (bootstrap) loader 4425 Handle protection_domain; // null protection domain 4426 4427 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 4428 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL); 4429 4430 if (TraceClassResolution && result != NULL) { 4431 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 4432 } 4433 return result; 4434 } 4435 4436 // These lookups are done with the NULL (bootstrap) ClassLoader to 4437 // circumvent any security checks that would be done by jni_FindClass. 4438 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env)) 4439 { 4440 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; } 4441 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; } 4442 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; } 4443 return true; 4444 } 4445 JNI_END 4446 4447 4448 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) { 4449 if (directBufferSupportInitializeFailed) { 4450 return false; 4451 } 4452 4453 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) { 4454 if (!lookupDirectBufferClasses(env)) { 4455 directBufferSupportInitializeFailed = 1; 4456 return false; 4457 } 4458 4459 // Make global references for these 4460 bufferClass = (jclass) env->NewGlobalRef(bufferClass); 4461 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass); 4462 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass); 4463 4464 // Get needed field and method IDs 4465 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V"); 4466 if (env->ExceptionCheck()) { 4467 env->ExceptionClear(); 4468 directBufferSupportInitializeFailed = 1; 4469 return false; 4470 } 4471 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J"); 4472 if (env->ExceptionCheck()) { 4473 env->ExceptionClear(); 4474 directBufferSupportInitializeFailed = 1; 4475 return false; 4476 } 4477 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I"); 4478 if (env->ExceptionCheck()) { 4479 env->ExceptionClear(); 4480 directBufferSupportInitializeFailed = 1; 4481 return false; 4482 } 4483 4484 if ((directByteBufferConstructor == NULL) || 4485 (directBufferAddressField == NULL) || 4486 (bufferCapacityField == NULL)) { 4487 directBufferSupportInitializeFailed = 1; 4488 return false; 4489 } 4490 4491 directBufferSupportInitializeEnded = 1; 4492 } else { 4493 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) { 4494 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls 4495 // os::sleep which requires the VM state transition. On other platforms, it 4496 // is not necessary. The following call to change the VM state is purposely 4497 // put inside the loop to avoid potential deadlock when multiple threads 4498 // try to call this method. See 6791815 for more details. 4499 ThreadInVMfromNative tivn(thread); 4500 os::yield_all(); 4501 } 4502 } 4503 4504 return !directBufferSupportInitializeFailed; 4505 } 4506 4507 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity) 4508 { 4509 // thread_from_jni_environment() will block if VM is gone. 4510 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4511 4512 JNIWrapper("jni_NewDirectByteBuffer"); 4513 #ifndef USDT2 4514 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity); 4515 #else /* USDT2 */ 4516 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY( 4517 env, address, capacity); 4518 #endif /* USDT2 */ 4519 4520 if (!directBufferSupportInitializeEnded) { 4521 if (!initializeDirectBufferSupport(env, thread)) { 4522 #ifndef USDT2 4523 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL); 4524 #else /* USDT2 */ 4525 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4526 NULL); 4527 #endif /* USDT2 */ 4528 return NULL; 4529 } 4530 } 4531 4532 // Being paranoid about accidental sign extension on address 4533 jlong addr = (jlong) ((uintptr_t) address); 4534 // NOTE that package-private DirectByteBuffer constructor currently 4535 // takes int capacity 4536 jint cap = (jint) capacity; 4537 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap); 4538 #ifndef USDT2 4539 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret); 4540 #else /* USDT2 */ 4541 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4542 ret); 4543 #endif /* USDT2 */ 4544 return ret; 4545 } 4546 4547 #ifndef USDT2 4548 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*); 4549 #else /* USDT2 */ 4550 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void* 4551 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref)); 4552 #endif /* USDT2 */ 4553 4554 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf) 4555 { 4556 // thread_from_jni_environment() will block if VM is gone. 4557 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4558 4559 JNIWrapper("jni_GetDirectBufferAddress"); 4560 #ifndef USDT2 4561 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf); 4562 #else /* USDT2 */ 4563 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY( 4564 env, buf); 4565 #endif /* USDT2 */ 4566 void* ret = NULL; 4567 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret); 4568 4569 if (!directBufferSupportInitializeEnded) { 4570 if (!initializeDirectBufferSupport(env, thread)) { 4571 return 0; 4572 } 4573 } 4574 4575 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) { 4576 return 0; 4577 } 4578 4579 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField); 4580 return ret; 4581 } 4582 4583 #ifndef USDT2 4584 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong); 4585 #else /* USDT2 */ 4586 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong 4587 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref)); 4588 #endif /* USDT2 */ 4589 4590 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf) 4591 { 4592 // thread_from_jni_environment() will block if VM is gone. 4593 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4594 4595 JNIWrapper("jni_GetDirectBufferCapacity"); 4596 #ifndef USDT2 4597 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf); 4598 #else /* USDT2 */ 4599 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY( 4600 env, buf); 4601 #endif /* USDT2 */ 4602 jlong ret = -1; 4603 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret); 4604 4605 if (!directBufferSupportInitializeEnded) { 4606 if (!initializeDirectBufferSupport(env, thread)) { 4607 ret = 0; 4608 return ret; 4609 } 4610 } 4611 4612 if (buf == NULL) { 4613 return -1; 4614 } 4615 4616 if (!env->IsInstanceOf(buf, directBufferClass)) { 4617 return -1; 4618 } 4619 4620 // NOTE that capacity is currently an int in the implementation 4621 ret = env->GetIntField(buf, bufferCapacityField); 4622 return ret; 4623 } 4624 4625 4626 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env)) 4627 JNIWrapper("GetVersion"); 4628 #ifndef USDT2 4629 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env); 4630 #else /* USDT2 */ 4631 HOTSPOT_JNI_GETVERSION_ENTRY( 4632 env); 4633 #endif /* USDT2 */ 4634 #ifndef USDT2 4635 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion); 4636 #else /* USDT2 */ 4637 HOTSPOT_JNI_GETVERSION_RETURN( 4638 CurrentVersion); 4639 #endif /* USDT2 */ 4640 return CurrentVersion; 4641 JNI_END 4642 4643 extern struct JavaVM_ main_vm; 4644 4645 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm)) 4646 JNIWrapper("jni_GetJavaVM"); 4647 #ifndef USDT2 4648 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm); 4649 #else /* USDT2 */ 4650 HOTSPOT_JNI_GETJAVAVM_ENTRY( 4651 env, (void **) vm); 4652 #endif /* USDT2 */ 4653 *vm = (JavaVM *)(&main_vm); 4654 #ifndef USDT2 4655 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK); 4656 #else /* USDT2 */ 4657 HOTSPOT_JNI_GETJAVAVM_RETURN( 4658 JNI_OK); 4659 #endif /* USDT2 */ 4660 return JNI_OK; 4661 JNI_END 4662 4663 // Structure containing all jni functions 4664 struct JNINativeInterface_ jni_NativeInterface = { 4665 NULL, 4666 NULL, 4667 NULL, 4668 4669 NULL, 4670 4671 jni_GetVersion, 4672 4673 jni_DefineClass, 4674 jni_FindClass, 4675 4676 jni_FromReflectedMethod, 4677 jni_FromReflectedField, 4678 4679 jni_ToReflectedMethod, 4680 4681 jni_GetSuperclass, 4682 jni_IsAssignableFrom, 4683 4684 jni_ToReflectedField, 4685 4686 jni_Throw, 4687 jni_ThrowNew, 4688 jni_ExceptionOccurred, 4689 jni_ExceptionDescribe, 4690 jni_ExceptionClear, 4691 jni_FatalError, 4692 4693 jni_PushLocalFrame, 4694 jni_PopLocalFrame, 4695 4696 jni_NewGlobalRef, 4697 jni_DeleteGlobalRef, 4698 jni_DeleteLocalRef, 4699 jni_IsSameObject, 4700 4701 jni_NewLocalRef, 4702 jni_EnsureLocalCapacity, 4703 4704 jni_AllocObject, 4705 jni_NewObject, 4706 jni_NewObjectV, 4707 jni_NewObjectA, 4708 4709 jni_GetObjectClass, 4710 jni_IsInstanceOf, 4711 4712 jni_GetMethodID, 4713 4714 jni_CallObjectMethod, 4715 jni_CallObjectMethodV, 4716 jni_CallObjectMethodA, 4717 jni_CallBooleanMethod, 4718 jni_CallBooleanMethodV, 4719 jni_CallBooleanMethodA, 4720 jni_CallByteMethod, 4721 jni_CallByteMethodV, 4722 jni_CallByteMethodA, 4723 jni_CallCharMethod, 4724 jni_CallCharMethodV, 4725 jni_CallCharMethodA, 4726 jni_CallShortMethod, 4727 jni_CallShortMethodV, 4728 jni_CallShortMethodA, 4729 jni_CallIntMethod, 4730 jni_CallIntMethodV, 4731 jni_CallIntMethodA, 4732 jni_CallLongMethod, 4733 jni_CallLongMethodV, 4734 jni_CallLongMethodA, 4735 jni_CallFloatMethod, 4736 jni_CallFloatMethodV, 4737 jni_CallFloatMethodA, 4738 jni_CallDoubleMethod, 4739 jni_CallDoubleMethodV, 4740 jni_CallDoubleMethodA, 4741 jni_CallVoidMethod, 4742 jni_CallVoidMethodV, 4743 jni_CallVoidMethodA, 4744 4745 jni_CallNonvirtualObjectMethod, 4746 jni_CallNonvirtualObjectMethodV, 4747 jni_CallNonvirtualObjectMethodA, 4748 jni_CallNonvirtualBooleanMethod, 4749 jni_CallNonvirtualBooleanMethodV, 4750 jni_CallNonvirtualBooleanMethodA, 4751 jni_CallNonvirtualByteMethod, 4752 jni_CallNonvirtualByteMethodV, 4753 jni_CallNonvirtualByteMethodA, 4754 jni_CallNonvirtualCharMethod, 4755 jni_CallNonvirtualCharMethodV, 4756 jni_CallNonvirtualCharMethodA, 4757 jni_CallNonvirtualShortMethod, 4758 jni_CallNonvirtualShortMethodV, 4759 jni_CallNonvirtualShortMethodA, 4760 jni_CallNonvirtualIntMethod, 4761 jni_CallNonvirtualIntMethodV, 4762 jni_CallNonvirtualIntMethodA, 4763 jni_CallNonvirtualLongMethod, 4764 jni_CallNonvirtualLongMethodV, 4765 jni_CallNonvirtualLongMethodA, 4766 jni_CallNonvirtualFloatMethod, 4767 jni_CallNonvirtualFloatMethodV, 4768 jni_CallNonvirtualFloatMethodA, 4769 jni_CallNonvirtualDoubleMethod, 4770 jni_CallNonvirtualDoubleMethodV, 4771 jni_CallNonvirtualDoubleMethodA, 4772 jni_CallNonvirtualVoidMethod, 4773 jni_CallNonvirtualVoidMethodV, 4774 jni_CallNonvirtualVoidMethodA, 4775 4776 jni_GetFieldID, 4777 4778 jni_GetObjectField, 4779 jni_GetBooleanField, 4780 jni_GetByteField, 4781 jni_GetCharField, 4782 jni_GetShortField, 4783 jni_GetIntField, 4784 jni_GetLongField, 4785 jni_GetFloatField, 4786 jni_GetDoubleField, 4787 4788 jni_SetObjectField, 4789 jni_SetBooleanField, 4790 jni_SetByteField, 4791 jni_SetCharField, 4792 jni_SetShortField, 4793 jni_SetIntField, 4794 jni_SetLongField, 4795 jni_SetFloatField, 4796 jni_SetDoubleField, 4797 4798 jni_GetStaticMethodID, 4799 4800 jni_CallStaticObjectMethod, 4801 jni_CallStaticObjectMethodV, 4802 jni_CallStaticObjectMethodA, 4803 jni_CallStaticBooleanMethod, 4804 jni_CallStaticBooleanMethodV, 4805 jni_CallStaticBooleanMethodA, 4806 jni_CallStaticByteMethod, 4807 jni_CallStaticByteMethodV, 4808 jni_CallStaticByteMethodA, 4809 jni_CallStaticCharMethod, 4810 jni_CallStaticCharMethodV, 4811 jni_CallStaticCharMethodA, 4812 jni_CallStaticShortMethod, 4813 jni_CallStaticShortMethodV, 4814 jni_CallStaticShortMethodA, 4815 jni_CallStaticIntMethod, 4816 jni_CallStaticIntMethodV, 4817 jni_CallStaticIntMethodA, 4818 jni_CallStaticLongMethod, 4819 jni_CallStaticLongMethodV, 4820 jni_CallStaticLongMethodA, 4821 jni_CallStaticFloatMethod, 4822 jni_CallStaticFloatMethodV, 4823 jni_CallStaticFloatMethodA, 4824 jni_CallStaticDoubleMethod, 4825 jni_CallStaticDoubleMethodV, 4826 jni_CallStaticDoubleMethodA, 4827 jni_CallStaticVoidMethod, 4828 jni_CallStaticVoidMethodV, 4829 jni_CallStaticVoidMethodA, 4830 4831 jni_GetStaticFieldID, 4832 4833 jni_GetStaticObjectField, 4834 jni_GetStaticBooleanField, 4835 jni_GetStaticByteField, 4836 jni_GetStaticCharField, 4837 jni_GetStaticShortField, 4838 jni_GetStaticIntField, 4839 jni_GetStaticLongField, 4840 jni_GetStaticFloatField, 4841 jni_GetStaticDoubleField, 4842 4843 jni_SetStaticObjectField, 4844 jni_SetStaticBooleanField, 4845 jni_SetStaticByteField, 4846 jni_SetStaticCharField, 4847 jni_SetStaticShortField, 4848 jni_SetStaticIntField, 4849 jni_SetStaticLongField, 4850 jni_SetStaticFloatField, 4851 jni_SetStaticDoubleField, 4852 4853 jni_NewString, 4854 jni_GetStringLength, 4855 jni_GetStringChars, 4856 jni_ReleaseStringChars, 4857 4858 jni_NewStringUTF, 4859 jni_GetStringUTFLength, 4860 jni_GetStringUTFChars, 4861 jni_ReleaseStringUTFChars, 4862 4863 jni_GetArrayLength, 4864 4865 jni_NewObjectArray, 4866 jni_GetObjectArrayElement, 4867 jni_SetObjectArrayElement, 4868 4869 jni_NewBooleanArray, 4870 jni_NewByteArray, 4871 jni_NewCharArray, 4872 jni_NewShortArray, 4873 jni_NewIntArray, 4874 jni_NewLongArray, 4875 jni_NewFloatArray, 4876 jni_NewDoubleArray, 4877 4878 jni_GetBooleanArrayElements, 4879 jni_GetByteArrayElements, 4880 jni_GetCharArrayElements, 4881 jni_GetShortArrayElements, 4882 jni_GetIntArrayElements, 4883 jni_GetLongArrayElements, 4884 jni_GetFloatArrayElements, 4885 jni_GetDoubleArrayElements, 4886 4887 jni_ReleaseBooleanArrayElements, 4888 jni_ReleaseByteArrayElements, 4889 jni_ReleaseCharArrayElements, 4890 jni_ReleaseShortArrayElements, 4891 jni_ReleaseIntArrayElements, 4892 jni_ReleaseLongArrayElements, 4893 jni_ReleaseFloatArrayElements, 4894 jni_ReleaseDoubleArrayElements, 4895 4896 jni_GetBooleanArrayRegion, 4897 jni_GetByteArrayRegion, 4898 jni_GetCharArrayRegion, 4899 jni_GetShortArrayRegion, 4900 jni_GetIntArrayRegion, 4901 jni_GetLongArrayRegion, 4902 jni_GetFloatArrayRegion, 4903 jni_GetDoubleArrayRegion, 4904 4905 jni_SetBooleanArrayRegion, 4906 jni_SetByteArrayRegion, 4907 jni_SetCharArrayRegion, 4908 jni_SetShortArrayRegion, 4909 jni_SetIntArrayRegion, 4910 jni_SetLongArrayRegion, 4911 jni_SetFloatArrayRegion, 4912 jni_SetDoubleArrayRegion, 4913 4914 jni_RegisterNatives, 4915 jni_UnregisterNatives, 4916 4917 jni_MonitorEnter, 4918 jni_MonitorExit, 4919 4920 jni_GetJavaVM, 4921 4922 jni_GetStringRegion, 4923 jni_GetStringUTFRegion, 4924 4925 jni_GetPrimitiveArrayCritical, 4926 jni_ReleasePrimitiveArrayCritical, 4927 4928 jni_GetStringCritical, 4929 jni_ReleaseStringCritical, 4930 4931 jni_NewWeakGlobalRef, 4932 jni_DeleteWeakGlobalRef, 4933 4934 jni_ExceptionCheck, 4935 4936 jni_NewDirectByteBuffer, 4937 jni_GetDirectBufferAddress, 4938 jni_GetDirectBufferCapacity, 4939 4940 // New 1_6 features 4941 4942 jni_GetObjectRefType 4943 }; 4944 4945 4946 // For jvmti use to modify jni function table. 4947 // Java threads in native contiues to run until it is transitioned 4948 // to VM at safepoint. Before the transition or before it is blocked 4949 // for safepoint it may access jni function table. VM could crash if 4950 // any java thread access the jni function table in the middle of memcpy. 4951 // To avoid this each function pointers are copied automically. 4952 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) { 4953 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); 4954 intptr_t *a = (intptr_t *) jni_functions(); 4955 intptr_t *b = (intptr_t *) new_jni_NativeInterface; 4956 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) { 4957 Atomic::store_ptr(*b++, a++); 4958 } 4959 } 4960 4961 void quicken_jni_functions() { 4962 // Replace Get<Primitive>Field with fast versions 4963 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access() 4964 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls 4965 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2) 4966 // windows x86 currently needs SEH wrapper and the gain of the fast 4967 // versions currently isn't certain for server vm on uniprocessor. 4968 && os::is_MP() 4969 #endif 4970 ) { 4971 address func; 4972 func = JNI_FastGetField::generate_fast_get_boolean_field(); 4973 if (func != (address)-1) { 4974 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func; 4975 } 4976 func = JNI_FastGetField::generate_fast_get_byte_field(); 4977 if (func != (address)-1) { 4978 jni_NativeInterface.GetByteField = (GetByteField_t)func; 4979 } 4980 func = JNI_FastGetField::generate_fast_get_char_field(); 4981 if (func != (address)-1) { 4982 jni_NativeInterface.GetCharField = (GetCharField_t)func; 4983 } 4984 func = JNI_FastGetField::generate_fast_get_short_field(); 4985 if (func != (address)-1) { 4986 jni_NativeInterface.GetShortField = (GetShortField_t)func; 4987 } 4988 func = JNI_FastGetField::generate_fast_get_int_field(); 4989 if (func != (address)-1) { 4990 jni_NativeInterface.GetIntField = (GetIntField_t)func; 4991 } 4992 func = JNI_FastGetField::generate_fast_get_long_field(); 4993 if (func != (address)-1) { 4994 jni_NativeInterface.GetLongField = (GetLongField_t)func; 4995 } 4996 func = JNI_FastGetField::generate_fast_get_float_field(); 4997 if (func != (address)-1) { 4998 jni_NativeInterface.GetFloatField = (GetFloatField_t)func; 4999 } 5000 func = JNI_FastGetField::generate_fast_get_double_field(); 5001 if (func != (address)-1) { 5002 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func; 5003 } 5004 } 5005 } 5006 5007 // Returns the function structure 5008 struct JNINativeInterface_* jni_functions() { 5009 #if INCLUDE_JNI_CHECK 5010 if (CheckJNICalls) return jni_functions_check(); 5011 #endif // INCLUDE_JNI_CHECK 5012 return &jni_NativeInterface; 5013 } 5014 5015 // Returns the function structure 5016 struct JNINativeInterface_* jni_functions_nocheck() { 5017 return &jni_NativeInterface; 5018 } 5019 5020 5021 // Invocation API 5022 5023 5024 // Forward declaration 5025 extern const struct JNIInvokeInterface_ jni_InvokeInterface; 5026 5027 // Global invocation API vars 5028 volatile jint vm_created = 0; 5029 // Indicate whether it is safe to recreate VM 5030 volatile jint safe_to_recreate_vm = 1; 5031 struct JavaVM_ main_vm = {&jni_InvokeInterface}; 5032 5033 5034 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */ 5035 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL }; 5036 5037 #ifndef USDT2 5038 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*); 5039 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint); 5040 #else /* USDT2 */ 5041 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint 5042 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref)); 5043 #endif /* USDT2 */ 5044 5045 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) { 5046 #ifndef USDT2 5047 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_); 5048 #else /* USDT2 */ 5049 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY( 5050 args_); 5051 #endif /* USDT2 */ 5052 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_; 5053 jint ret = JNI_ERR; 5054 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret); 5055 5056 if (Threads::is_supported_jni_version(args->version)) { 5057 ret = JNI_OK; 5058 } 5059 // 1.1 style no longer supported in hotspot. 5060 // According the JNI spec, we should update args->version on return. 5061 // We also use the structure to communicate with launcher about default 5062 // stack size. 5063 if (args->version == JNI_VERSION_1_1) { 5064 args->version = JNI_VERSION_1_2; 5065 // javaStackSize is int in arguments structure 5066 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow"); 5067 args->javaStackSize = (jint)(ThreadStackSize * K); 5068 } 5069 return ret; 5070 } 5071 5072 #ifndef PRODUCT 5073 5074 #include "gc_implementation/shared/gcTimer.hpp" 5075 #include "gc_interface/collectedHeap.hpp" 5076 #if INCLUDE_ALL_GCS 5077 #include "gc_implementation/g1/heapRegionRemSet.hpp" 5078 #endif 5079 #include "memory/guardedMemory.hpp" 5080 #include "utilities/quickSort.hpp" 5081 #include "utilities/ostream.hpp" 5082 #if INCLUDE_VM_STRUCTS 5083 #include "runtime/vmStructs.hpp" 5084 #endif 5085 5086 #define run_unit_test(unit_test_function_call) \ 5087 tty->print_cr("Running test: " #unit_test_function_call); \ 5088 unit_test_function_call 5089 5090 // Forward declaration 5091 void TestOS_test(); 5092 void TestReservedSpace_test(); 5093 void TestReserveMemorySpecial_test(); 5094 void TestVirtualSpace_test(); 5095 void TestMetaspaceAux_test(); 5096 void SpaceManager_test_adjust_initial_chunk_size(); 5097 void TestMetachunk_test(); 5098 void TestVirtualSpaceNode_test(); 5099 void TestNewSize_test(); 5100 void TestKlass_test(); 5101 void Test_linked_list(); 5102 void TestChunkedList_test(); 5103 #if INCLUDE_ALL_GCS 5104 void TestOldFreeSpaceCalculation_test(); 5105 void TestG1BiasedArray_test(); 5106 void TestBufferingOopClosure_test(); 5107 void TestCodeCacheRemSet_test(); 5108 void FreeRegionList_test(); 5109 void ChunkManager_test_list_index(); 5110 #endif 5111 5112 void execute_internal_vm_tests() { 5113 if (ExecuteInternalVMTests) { 5114 tty->print_cr("Running internal VM tests"); 5115 run_unit_test(TestOS_test()); 5116 run_unit_test(TestReservedSpace_test()); 5117 run_unit_test(TestReserveMemorySpecial_test()); 5118 run_unit_test(TestVirtualSpace_test()); 5119 run_unit_test(TestMetaspaceAux_test()); 5120 run_unit_test(TestMetachunk_test()); 5121 run_unit_test(TestVirtualSpaceNode_test()); 5122 run_unit_test(GlobalDefinitions::test_globals()); 5123 run_unit_test(GCTimerAllTest::all()); 5124 run_unit_test(arrayOopDesc::test_max_array_length()); 5125 run_unit_test(CollectedHeap::test_is_in()); 5126 run_unit_test(QuickSort::test_quick_sort()); 5127 run_unit_test(GuardedMemory::test_guarded_memory()); 5128 run_unit_test(AltHashing::test_alt_hash()); 5129 run_unit_test(test_loggc_filename()); 5130 run_unit_test(TestNewSize_test()); 5131 run_unit_test(TestKlass_test()); 5132 run_unit_test(Test_linked_list()); 5133 run_unit_test(TestChunkedList_test()); 5134 run_unit_test(ObjectMonitor::sanity_checks()); 5135 #if INCLUDE_VM_STRUCTS 5136 run_unit_test(VMStructs::test()); 5137 #endif 5138 #if INCLUDE_ALL_GCS 5139 run_unit_test(TestOldFreeSpaceCalculation_test()); 5140 run_unit_test(TestG1BiasedArray_test()); 5141 run_unit_test(HeapRegionRemSet::test_prt()); 5142 run_unit_test(SpaceManager_test_adjust_initial_chunk_size()); 5143 run_unit_test(ChunkManager_test_list_index()); 5144 run_unit_test(TestBufferingOopClosure_test()); 5145 run_unit_test(TestCodeCacheRemSet_test()); 5146 if (UseG1GC) { 5147 run_unit_test(FreeRegionList_test()); 5148 } 5149 #endif 5150 tty->print_cr("All internal VM tests passed"); 5151 } 5152 } 5153 5154 #undef run_unit_test 5155 5156 #endif 5157 5158 #ifndef USDT2 5159 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5160 DT_RETURN_MARK_DECL(CreateJavaVM, jint); 5161 #else /* USDT2 */ 5162 DT_RETURN_MARK_DECL(CreateJavaVM, jint 5163 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref)); 5164 #endif /* USDT2 */ 5165 5166 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) { 5167 #ifndef USDT2 5168 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5169 #else /* USDT2 */ 5170 HOTSPOT_JNI_CREATEJAVAVM_ENTRY( 5171 (void **) vm, penv, args); 5172 #endif /* USDT2 */ 5173 5174 jint result = JNI_ERR; 5175 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result); 5176 5177 // We're about to use Atomic::xchg for synchronization. Some Zero 5178 // platforms use the GCC builtin __sync_lock_test_and_set for this, 5179 // but __sync_lock_test_and_set is not guaranteed to do what we want 5180 // on all architectures. So we check it works before relying on it. 5181 #if defined(ZERO) && defined(ASSERT) 5182 { 5183 jint a = 0xcafebabe; 5184 jint b = Atomic::xchg(0xdeadbeef, &a); 5185 void *c = &a; 5186 void *d = Atomic::xchg_ptr(&b, &c); 5187 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works"); 5188 assert(c == &b && d == &a, "Atomic::xchg_ptr() works"); 5189 } 5190 #endif // ZERO && ASSERT 5191 5192 // At the moment it's only possible to have one Java VM, 5193 // since some of the runtime state is in global variables. 5194 5195 // We cannot use our mutex locks here, since they only work on 5196 // Threads. We do an atomic compare and exchange to ensure only 5197 // one thread can call this method at a time 5198 5199 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms 5200 // the add/dec implementations are dependent on whether we are running 5201 // on a multiprocessor, and at this stage of initialization the os::is_MP 5202 // function used to determine this will always return false. Atomic::xchg 5203 // does not have this problem. 5204 if (Atomic::xchg(1, &vm_created) == 1) { 5205 return JNI_EEXIST; // already created, or create attempt in progress 5206 } 5207 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) { 5208 return JNI_ERR; // someone tried and failed and retry not allowed. 5209 } 5210 5211 assert(vm_created == 1, "vm_created is true during the creation"); 5212 5213 /** 5214 * Certain errors during initialization are recoverable and do not 5215 * prevent this method from being called again at a later time 5216 * (perhaps with different arguments). However, at a certain 5217 * point during initialization if an error occurs we cannot allow 5218 * this function to be called again (or it will crash). In those 5219 * situations, the 'canTryAgain' flag is set to false, which atomically 5220 * sets safe_to_recreate_vm to 1, such that any new call to 5221 * JNI_CreateJavaVM will immediately fail using the above logic. 5222 */ 5223 bool can_try_again = true; 5224 5225 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again); 5226 if (result == JNI_OK) { 5227 JavaThread *thread = JavaThread::current(); 5228 /* thread is thread_in_vm here */ 5229 *vm = (JavaVM *)(&main_vm); 5230 *(JNIEnv**)penv = thread->jni_environment(); 5231 5232 // Tracks the time application was running before GC 5233 RuntimeService::record_application_start(); 5234 5235 // Notify JVMTI 5236 if (JvmtiExport::should_post_thread_life()) { 5237 JvmtiExport::post_thread_start(thread); 5238 } 5239 5240 EventThreadStart event; 5241 if (event.should_commit()) { 5242 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5243 event.commit(); 5244 } 5245 5246 #ifndef PRODUCT 5247 #ifndef CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED 5248 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f() 5249 #endif 5250 5251 // Check if we should compile all classes on bootclasspath 5252 if (CompileTheWorld) ClassLoader::compile_the_world(); 5253 if (ReplayCompiles) ciReplay::replay(thread); 5254 5255 // Some platforms (like Win*) need a wrapper around these test 5256 // functions in order to properly handle error conditions. 5257 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler); 5258 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests); 5259 #endif 5260 5261 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. 5262 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5263 } else { 5264 if (can_try_again) { 5265 // reset safe_to_recreate_vm to 1 so that retrial would be possible 5266 safe_to_recreate_vm = 1; 5267 } 5268 5269 // Creation failed. We must reset vm_created 5270 *vm = 0; 5271 *(JNIEnv**)penv = 0; 5272 // reset vm_created last to avoid race condition. Use OrderAccess to 5273 // control both compiler and architectural-based reordering. 5274 OrderAccess::release_store(&vm_created, 0); 5275 } 5276 5277 return result; 5278 } 5279 5280 #ifndef USDT2 5281 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5282 JavaVM**, jsize, jsize*); 5283 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); 5284 #endif /* !USDT2 */ 5285 5286 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { 5287 // See bug 4367188, the wrapper can sometimes cause VM crashes 5288 // JNIWrapper("GetCreatedJavaVMs"); 5289 #ifndef USDT2 5290 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5291 vm_buf, bufLen, numVMs); 5292 #else /* USDT2 */ 5293 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY( 5294 (void **) vm_buf, bufLen, (uintptr_t *) numVMs); 5295 #endif /* USDT2 */ 5296 if (vm_created) { 5297 if (numVMs != NULL) *numVMs = 1; 5298 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); 5299 } else { 5300 if (numVMs != NULL) *numVMs = 0; 5301 } 5302 #ifndef USDT2 5303 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); 5304 #else /* USDT2 */ 5305 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN( 5306 JNI_OK); 5307 #endif /* USDT2 */ 5308 return JNI_OK; 5309 } 5310 5311 extern "C" { 5312 5313 #ifndef USDT2 5314 DT_RETURN_MARK_DECL(DestroyJavaVM, jint); 5315 #else /* USDT2 */ 5316 DT_RETURN_MARK_DECL(DestroyJavaVM, jint 5317 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref)); 5318 #endif /* USDT2 */ 5319 5320 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { 5321 #ifndef USDT2 5322 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); 5323 #else /* USDT2 */ 5324 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY( 5325 vm); 5326 #endif /* USDT2 */ 5327 jint res = JNI_ERR; 5328 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); 5329 5330 if (!vm_created) { 5331 res = JNI_ERR; 5332 return res; 5333 } 5334 5335 JNIWrapper("DestroyJavaVM"); 5336 JNIEnv *env; 5337 JavaVMAttachArgs destroyargs; 5338 destroyargs.version = CurrentVersion; 5339 destroyargs.name = (char *)"DestroyJavaVM"; 5340 destroyargs.group = NULL; 5341 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); 5342 if (res != JNI_OK) { 5343 return res; 5344 } 5345 5346 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. 5347 JavaThread* thread = JavaThread::current(); 5348 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5349 if (Threads::destroy_vm()) { 5350 // Should not change thread state, VM is gone 5351 vm_created = false; 5352 res = JNI_OK; 5353 return res; 5354 } else { 5355 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5356 res = JNI_ERR; 5357 return res; 5358 } 5359 } 5360 5361 5362 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { 5363 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; 5364 5365 // Check below commented out from JDK1.2fcs as well 5366 /* 5367 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { 5368 return JNI_EVERSION; 5369 } 5370 */ 5371 5372 Thread* t = ThreadLocalStorage::get_thread_slow(); 5373 if (t != NULL) { 5374 // If the thread has been attached this operation is a no-op 5375 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); 5376 return JNI_OK; 5377 } 5378 5379 // Create a thread and mark it as attaching so it will be skipped by the 5380 // ThreadsListEnumerator - see CR 6404306 5381 JavaThread* thread = new JavaThread(true); 5382 5383 // Set correct safepoint info. The thread is going to call into Java when 5384 // initializing the Java level thread object. Hence, the correct state must 5385 // be set in order for the Safepoint code to deal with it correctly. 5386 thread->set_thread_state(_thread_in_vm); 5387 // Must do this before initialize_thread_local_storage 5388 thread->record_stack_base_and_size(); 5389 5390 thread->initialize_thread_local_storage(); 5391 5392 if (!os::create_attached_thread(thread)) { 5393 delete thread; 5394 return JNI_ERR; 5395 } 5396 // Enable stack overflow checks 5397 thread->create_stack_guard_pages(); 5398 5399 thread->initialize_tlab(); 5400 5401 thread->cache_global_variables(); 5402 5403 // Crucial that we do not have a safepoint check for this thread, since it has 5404 // not been added to the Thread list yet. 5405 { Threads_lock->lock_without_safepoint_check(); 5406 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to 5407 // avoid this thread trying to do a GC before it is added to the thread-list 5408 thread->set_active_handles(JNIHandleBlock::allocate_block()); 5409 Threads::add(thread, daemon); 5410 Threads_lock->unlock(); 5411 } 5412 // Create thread group and name info from attach arguments 5413 oop group = NULL; 5414 char* thread_name = NULL; 5415 if (args != NULL && Threads::is_supported_jni_version(args->version)) { 5416 group = JNIHandles::resolve(args->group); 5417 thread_name = args->name; // may be NULL 5418 } 5419 if (group == NULL) group = Universe::main_thread_group(); 5420 5421 // Create Java level thread object and attach it to this thread 5422 bool attach_failed = false; 5423 { 5424 EXCEPTION_MARK; 5425 HandleMark hm(THREAD); 5426 Handle thread_group(THREAD, group); 5427 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); 5428 if (HAS_PENDING_EXCEPTION) { 5429 CLEAR_PENDING_EXCEPTION; 5430 // cleanup outside the handle mark. 5431 attach_failed = true; 5432 } 5433 } 5434 5435 if (attach_failed) { 5436 // Added missing cleanup 5437 thread->cleanup_failed_attach_current_thread(); 5438 return JNI_ERR; 5439 } 5440 5441 // mark the thread as no longer attaching 5442 // this uses a fence to push the change through so we don't have 5443 // to regrab the threads_lock 5444 thread->set_done_attaching_via_jni(); 5445 5446 // Set java thread status. 5447 java_lang_Thread::set_thread_status(thread->threadObj(), 5448 java_lang_Thread::RUNNABLE); 5449 5450 // Notify the debugger 5451 if (JvmtiExport::should_post_thread_life()) { 5452 JvmtiExport::post_thread_start(thread); 5453 } 5454 5455 EventThreadStart event; 5456 if (event.should_commit()) { 5457 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5458 event.commit(); 5459 } 5460 5461 *(JNIEnv**)penv = thread->jni_environment(); 5462 5463 // Now leaving the VM, so change thread_state. This is normally automatically taken care 5464 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by 5465 // using ThreadStateTransition::transition, we do a callback to the safepoint code if 5466 // needed. 5467 5468 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5469 5470 // Perform any platform dependent FPU setup 5471 os::setup_fpu(); 5472 5473 return JNI_OK; 5474 } 5475 5476 5477 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { 5478 #ifndef USDT2 5479 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); 5480 #else /* USDT2 */ 5481 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY( 5482 vm, penv, _args); 5483 #endif /* USDT2 */ 5484 if (!vm_created) { 5485 #ifndef USDT2 5486 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); 5487 #else /* USDT2 */ 5488 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5489 (uint32_t) JNI_ERR); 5490 #endif /* USDT2 */ 5491 return JNI_ERR; 5492 } 5493 5494 JNIWrapper("AttachCurrentThread"); 5495 jint ret = attach_current_thread(vm, penv, _args, false); 5496 #ifndef USDT2 5497 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); 5498 #else /* USDT2 */ 5499 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5500 ret); 5501 #endif /* USDT2 */ 5502 return ret; 5503 } 5504 5505 5506 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { 5507 #ifndef USDT2 5508 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); 5509 #else /* USDT2 */ 5510 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY( 5511 vm); 5512 #endif /* USDT2 */ 5513 VM_Exit::block_if_vm_exited(); 5514 5515 JNIWrapper("DetachCurrentThread"); 5516 5517 // If the thread has been deattacted the operations is a no-op 5518 if (ThreadLocalStorage::thread() == NULL) { 5519 #ifndef USDT2 5520 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5521 #else /* USDT2 */ 5522 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5523 JNI_OK); 5524 #endif /* USDT2 */ 5525 return JNI_OK; 5526 } 5527 5528 JavaThread* thread = JavaThread::current(); 5529 if (thread->has_last_Java_frame()) { 5530 #ifndef USDT2 5531 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); 5532 #else /* USDT2 */ 5533 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5534 (uint32_t) JNI_ERR); 5535 #endif /* USDT2 */ 5536 // Can't detach a thread that's running java, that can't work. 5537 return JNI_ERR; 5538 } 5539 5540 // Safepoint support. Have to do call-back to safepoint code, if in the 5541 // middel of a safepoint operation 5542 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5543 5544 // XXX: Note that JavaThread::exit() call below removes the guards on the 5545 // stack pages set up via enable_stack_{red,yellow}_zone() calls 5546 // above in jni_AttachCurrentThread. Unfortunately, while the setting 5547 // of the guards is visible in jni_AttachCurrentThread above, 5548 // the removal of the guards is buried below in JavaThread::exit() 5549 // here. The abstraction should be more symmetrically either exposed 5550 // or hidden (e.g. it could probably be hidden in the same 5551 // (platform-dependent) methods where we do alternate stack 5552 // maintenance work?) 5553 thread->exit(false, JavaThread::jni_detach); 5554 delete thread; 5555 5556 #ifndef USDT2 5557 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5558 #else /* USDT2 */ 5559 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5560 JNI_OK); 5561 #endif /* USDT2 */ 5562 return JNI_OK; 5563 } 5564 5565 #ifndef USDT2 5566 DT_RETURN_MARK_DECL(GetEnv, jint); 5567 #else /* USDT2 */ 5568 DT_RETURN_MARK_DECL(GetEnv, jint 5569 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref)); 5570 #endif /* USDT2 */ 5571 5572 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { 5573 #ifndef USDT2 5574 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); 5575 #else /* USDT2 */ 5576 HOTSPOT_JNI_GETENV_ENTRY( 5577 vm, penv, version); 5578 #endif /* USDT2 */ 5579 jint ret = JNI_ERR; 5580 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); 5581 5582 if (!vm_created) { 5583 *penv = NULL; 5584 ret = JNI_EDETACHED; 5585 return ret; 5586 } 5587 5588 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) { 5589 return ret; 5590 } 5591 5592 #ifndef JVMPI_VERSION_1 5593 // need these in order to be polite about older agents 5594 #define JVMPI_VERSION_1 ((jint)0x10000001) 5595 #define JVMPI_VERSION_1_1 ((jint)0x10000002) 5596 #define JVMPI_VERSION_1_2 ((jint)0x10000003) 5597 #endif // !JVMPI_VERSION_1 5598 5599 Thread* thread = ThreadLocalStorage::thread(); 5600 if (thread != NULL && thread->is_Java_thread()) { 5601 if (Threads::is_supported_jni_version_including_1_1(version)) { 5602 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); 5603 ret = JNI_OK; 5604 return ret; 5605 5606 } else if (version == JVMPI_VERSION_1 || 5607 version == JVMPI_VERSION_1_1 || 5608 version == JVMPI_VERSION_1_2) { 5609 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); 5610 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5611 ret = JNI_EVERSION; 5612 return ret; 5613 } else if (JvmtiExport::is_jvmdi_version(version)) { 5614 tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); 5615 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5616 ret = JNI_EVERSION; 5617 return ret; 5618 } else { 5619 *penv = NULL; 5620 ret = JNI_EVERSION; 5621 return ret; 5622 } 5623 } else { 5624 *penv = NULL; 5625 ret = JNI_EDETACHED; 5626 return ret; 5627 } 5628 } 5629 5630 5631 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { 5632 #ifndef USDT2 5633 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); 5634 #else /* USDT2 */ 5635 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY( 5636 vm, penv, _args); 5637 #endif /* USDT2 */ 5638 if (!vm_created) { 5639 #ifndef USDT2 5640 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); 5641 #else /* USDT2 */ 5642 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5643 (uint32_t) JNI_ERR); 5644 #endif /* USDT2 */ 5645 return JNI_ERR; 5646 } 5647 5648 JNIWrapper("AttachCurrentThreadAsDaemon"); 5649 jint ret = attach_current_thread(vm, penv, _args, true); 5650 #ifndef USDT2 5651 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); 5652 #else /* USDT2 */ 5653 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5654 ret); 5655 #endif /* USDT2 */ 5656 return ret; 5657 } 5658 5659 5660 } // End extern "C" 5661 5662 const struct JNIInvokeInterface_ jni_InvokeInterface = { 5663 NULL, 5664 NULL, 5665 NULL, 5666 5667 jni_DestroyJavaVM, 5668 jni_AttachCurrentThread, 5669 jni_DetachCurrentThread, 5670 jni_GetEnv, 5671 jni_AttachCurrentThreadAsDaemon 5672 };