jni.cpp revision 5831:a3ba776d6ab6
1/* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26#include "precompiled.hpp" 27#include "ci/ciReplay.hpp" 28#include "classfile/altHashing.hpp" 29#include "classfile/classLoader.hpp" 30#include "classfile/javaClasses.hpp" 31#include "classfile/symbolTable.hpp" 32#include "classfile/systemDictionary.hpp" 33#include "classfile/vmSymbols.hpp" 34#include "interpreter/linkResolver.hpp" 35#include "utilities/macros.hpp" 36#if INCLUDE_ALL_GCS 37#include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 38#endif // INCLUDE_ALL_GCS 39#include "memory/allocation.hpp" 40#include "memory/allocation.inline.hpp" 41#include "memory/gcLocker.inline.hpp" 42#include "memory/oopFactory.hpp" 43#include "memory/universe.inline.hpp" 44#include "oops/instanceKlass.hpp" 45#include "oops/instanceOop.hpp" 46#include "oops/markOop.hpp" 47#include "oops/method.hpp" 48#include "oops/objArrayKlass.hpp" 49#include "oops/objArrayOop.hpp" 50#include "oops/oop.inline.hpp" 51#include "oops/symbol.hpp" 52#include "oops/typeArrayKlass.hpp" 53#include "oops/typeArrayOop.hpp" 54#include "prims/jni.h" 55#include "prims/jniCheck.hpp" 56#include "prims/jniExport.hpp" 57#include "prims/jniFastGetField.hpp" 58#include "prims/jvm.h" 59#include "prims/jvm_misc.hpp" 60#include "prims/jvmtiExport.hpp" 61#include "prims/jvmtiThreadState.hpp" 62#include "runtime/compilationPolicy.hpp" 63#include "runtime/fieldDescriptor.hpp" 64#include "runtime/fprofiler.hpp" 65#include "runtime/handles.inline.hpp" 66#include "runtime/interfaceSupport.hpp" 67#include "runtime/java.hpp" 68#include "runtime/javaCalls.hpp" 69#include "runtime/jfieldIDWorkaround.hpp" 70#include "runtime/reflection.hpp" 71#include "runtime/sharedRuntime.hpp" 72#include "runtime/signature.hpp" 73#include "runtime/thread.inline.hpp" 74#include "runtime/vm_operations.hpp" 75#include "services/runtimeService.hpp" 76#include "trace/tracing.hpp" 77#include "utilities/defaultStream.hpp" 78#include "utilities/dtrace.hpp" 79#include "utilities/events.hpp" 80#include "utilities/histogram.hpp" 81#ifdef TARGET_OS_FAMILY_linux 82# include "os_linux.inline.hpp" 83#endif 84#ifdef TARGET_OS_FAMILY_solaris 85# include "os_solaris.inline.hpp" 86#endif 87#ifdef TARGET_OS_FAMILY_windows 88# include "os_windows.inline.hpp" 89#endif 90#ifdef TARGET_OS_FAMILY_bsd 91# include "os_bsd.inline.hpp" 92#endif 93 94static jint CurrentVersion = JNI_VERSION_1_8; 95 96 97// The DT_RETURN_MARK macros create a scoped object to fire the dtrace 98// '-return' probe regardless of the return path is taken out of the function. 99// Methods that have multiple return paths use this to avoid having to 100// instrument each return path. Methods that use CHECK or THROW must use this 101// since those macros can cause an immedate uninstrumented return. 102// 103// In order to get the return value, a reference to the variable containing 104// the return value must be passed to the contructor of the object, and 105// the return value must be set before return (since the mark object has 106// a reference to it). 107// 108// Example: 109// DT_RETURN_MARK_DECL(SomeFunc, int); 110// JNI_ENTRY(int, SomeFunc, ...) 111// int return_value = 0; 112// DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); 113// foo(CHECK_0) 114// return_value = 5; 115// return return_value; 116// JNI_END 117#ifndef USDT2 118#define DT_RETURN_MARK_DECL(name, type) \ 119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ 120 DTRACE_ONLY( \ 121 class DTraceReturnProbeMark_##name { \ 122 public: \ 123 const type& _ret_ref; \ 124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 125 ~DTraceReturnProbeMark_##name() { \ 126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ 127 } \ 128 } \ 129 ) 130// Void functions are simpler since there's no return value 131#define DT_VOID_RETURN_MARK_DECL(name) \ 132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ 133 DTRACE_ONLY( \ 134 class DTraceReturnProbeMark_##name { \ 135 public: \ 136 ~DTraceReturnProbeMark_##name() { \ 137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ 138 } \ 139 } \ 140 ) 141 142#else /* USDT2 */ 143 144#define DT_RETURN_MARK_DECL(name, type, probe) \ 145 DTRACE_ONLY( \ 146 class DTraceReturnProbeMark_##name { \ 147 public: \ 148 const type& _ret_ref; \ 149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 150 ~DTraceReturnProbeMark_##name() { \ 151 probe; \ 152 } \ 153 } \ 154 ) 155// Void functions are simpler since there's no return value 156#define DT_VOID_RETURN_MARK_DECL(name, probe) \ 157 DTRACE_ONLY( \ 158 class DTraceReturnProbeMark_##name { \ 159 public: \ 160 ~DTraceReturnProbeMark_##name() { \ 161 probe; \ 162 } \ 163 } \ 164 ) 165#endif /* USDT2 */ 166 167// Place these macros in the function to mark the return. Non-void 168// functions need the type and address of the return value. 169#define DT_RETURN_MARK(name, type, ref) \ 170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) 171#define DT_VOID_RETURN_MARK(name) \ 172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) 173 174 175// Use these to select distinct code for floating-point vs. non-floating point 176// situations. Used from within common macros where we need slightly 177// different behavior for Float/Double 178#define FP_SELECT_Boolean(intcode, fpcode) intcode 179#define FP_SELECT_Byte(intcode, fpcode) intcode 180#define FP_SELECT_Char(intcode, fpcode) intcode 181#define FP_SELECT_Short(intcode, fpcode) intcode 182#define FP_SELECT_Object(intcode, fpcode) intcode 183#define FP_SELECT_Int(intcode, fpcode) intcode 184#define FP_SELECT_Long(intcode, fpcode) intcode 185#define FP_SELECT_Float(intcode, fpcode) fpcode 186#define FP_SELECT_Double(intcode, fpcode) fpcode 187#define FP_SELECT(TypeName, intcode, fpcode) \ 188 FP_SELECT_##TypeName(intcode, fpcode) 189 190#define COMMA , 191 192// Choose DT_RETURN_MARK macros based on the type: float/double -> void 193// (dtrace doesn't do FP yet) 194#ifndef USDT2 195#define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ 196 FP_SELECT(TypeName, \ 197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) 198#else /* USDT2 */ 199#define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \ 200 FP_SELECT(TypeName, \ 201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) ) 202#endif /* USDT2 */ 203#define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ 204 FP_SELECT(TypeName, \ 205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) 206 207 208// out-of-line helpers for class jfieldIDWorkaround: 209 210bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) { 211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { 212 uintptr_t as_uint = (uintptr_t) id; 213 intptr_t offset = raw_instance_offset(id); 214 if (is_checked_jfieldID(id)) { 215 if (!klass_hash_ok(k, id)) { 216 return false; 217 } 218 } 219 return InstanceKlass::cast(k)->contains_field_offset(offset); 220 } else { 221 JNIid* result = (JNIid*) id; 222#ifdef ASSERT 223 return result != NULL && result->is_static_field_id(); 224#else 225 return result != NULL; 226#endif 227 } 228} 229 230 231intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) { 232 if (offset <= small_offset_mask) { 233 Klass* field_klass = k; 234 Klass* super_klass = field_klass->super(); 235 // With compressed oops the most super class with nonstatic fields would 236 // be the owner of fields embedded in the header. 237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() && 238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) { 239 field_klass = super_klass; // super contains the field also 240 super_klass = field_klass->super(); 241 } 242 debug_only(No_Safepoint_Verifier nosafepoint;) 243 uintptr_t klass_hash = field_klass->identity_hash(); 244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; 245 } else { 246#if 0 247 #ifndef PRODUCT 248 { 249 ResourceMark rm; 250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name()); 251 } 252 #endif 253#endif 254 return 0; 255 } 256} 257 258bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) { 259 uintptr_t as_uint = (uintptr_t) id; 260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; 261 do { 262 debug_only(No_Safepoint_Verifier nosafepoint;) 263 // Could use a non-blocking query for identity_hash here... 264 if ((k->identity_hash() & klass_mask) == klass_hash) 265 return true; 266 k = k->super(); 267 } while (k != NULL); 268 return false; 269} 270 271void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) { 272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); 273 uintptr_t as_uint = (uintptr_t) id; 274 intptr_t offset = raw_instance_offset(id); 275 if (VerifyJNIFields) { 276 if (is_checked_jfieldID(id)) { 277 guarantee(klass_hash_ok(k, id), 278 "Bug in native code: jfieldID class must match object"); 279 } else { 280#if 0 281 #ifndef PRODUCT 282 if (Verbose) { 283 ResourceMark rm; 284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name()); 285 } 286 #endif 287#endif 288 } 289 } 290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset), 291 "Bug in native code: jfieldID offset must address interior of object"); 292} 293 294// Pick a reasonable higher bound for local capacity requested 295// for EnsureLocalCapacity and PushLocalFrame. We don't want it too 296// high because a test (or very unusual application) may try to allocate 297// that many handles and run out of swap space. An implementation is 298// permitted to allocate more handles than the ensured capacity, so this 299// value is set high enough to prevent compatibility problems. 300const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K; 301 302 303// Wrapper to trace JNI functions 304 305#ifdef ASSERT 306 Histogram* JNIHistogram; 307 static volatile jint JNIHistogram_lock = 0; 308 309 class JNITraceWrapper : public StackObj { 310 public: 311 JNITraceWrapper(const char* format, ...) { 312 if (TraceJNICalls) { 313 va_list ap; 314 va_start(ap, format); 315 tty->print("JNI "); 316 tty->vprint_cr(format, ap); 317 va_end(ap); 318 } 319 } 320 }; 321 322 class JNIHistogramElement : public HistogramElement { 323 public: 324 JNIHistogramElement(const char* name); 325 }; 326 327 JNIHistogramElement::JNIHistogramElement(const char* elementName) { 328 _name = elementName; 329 uintx count = 0; 330 331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { 332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { 333 count +=1; 334 if ( (WarnOnStalledSpinLock > 0) 335 && (count % WarnOnStalledSpinLock == 0)) { 336 warning("JNIHistogram_lock seems to be stalled"); 337 } 338 } 339 } 340 341 342 if(JNIHistogram == NULL) 343 JNIHistogram = new Histogram("JNI Call Counts",100); 344 345 JNIHistogram->add_element(this); 346 Atomic::dec(&JNIHistogram_lock); 347 } 348 349 #define JNICountWrapper(arg) \ 350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \ 351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ 352 if (e != NULL) e->increment_count() 353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) 354#else 355 #define JNIWrapper(arg) 356#endif 357 358 359// Implementation of JNI entries 360 361#ifndef USDT2 362DT_RETURN_MARK_DECL(DefineClass, jclass); 363#else /* USDT2 */ 364DT_RETURN_MARK_DECL(DefineClass, jclass 365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref)); 366#endif /* USDT2 */ 367 368JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, 369 const jbyte *buf, jsize bufLen)) 370 JNIWrapper("DefineClass"); 371 372#ifndef USDT2 373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry, 374 env, name, loaderRef, buf, bufLen); 375#else /* USDT2 */ 376 HOTSPOT_JNI_DEFINECLASS_ENTRY( 377 env, (char*) name, loaderRef, (char*) buf, bufLen); 378#endif /* USDT2 */ 379 jclass cls = NULL; 380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); 381 382 TempNewSymbol class_name = NULL; 383 // Since exceptions can be thrown, class initialization can take place 384 // if name is NULL no check for class name in .class stream has to be made. 385 if (name != NULL) { 386 const int str_len = (int)strlen(name); 387 if (str_len > Symbol::max_length()) { 388 // It's impossible to create this class; the name cannot fit 389 // into the constant pool. 390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 391 } 392 class_name = SymbolTable::new_symbol(name, CHECK_NULL); 393 } 394 ResourceMark rm(THREAD); 395 ClassFileStream st((u1*) buf, bufLen, NULL); 396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); 397 398 if (UsePerfData && !class_loader.is_null()) { 399 // check whether the current caller thread holds the lock or not. 400 // If not, increment the corresponding counter 401 if (ObjectSynchronizer:: 402 query_lock_ownership((JavaThread*)THREAD, class_loader) != 403 ObjectSynchronizer::owner_self) { 404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); 405 } 406 } 407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, 408 Handle(), &st, true, 409 CHECK_NULL); 410 411 if (TraceClassResolution && k != NULL) { 412 trace_class_resolution(k); 413 } 414 415 cls = (jclass)JNIHandles::make_local( 416 env, k->java_mirror()); 417 return cls; 418JNI_END 419 420 421 422static bool first_time_FindClass = true; 423 424#ifndef USDT2 425DT_RETURN_MARK_DECL(FindClass, jclass); 426#else /* USDT2 */ 427DT_RETURN_MARK_DECL(FindClass, jclass 428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref)); 429#endif /* USDT2 */ 430 431JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) 432 JNIWrapper("FindClass"); 433#ifndef USDT2 434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); 435#else /* USDT2 */ 436 HOTSPOT_JNI_FINDCLASS_ENTRY(env, (char *)name); 437#endif /* USDT2 */ 438 439 jclass result = NULL; 440 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); 441 442 // Remember if we are the first invocation of jni_FindClass 443 bool first_time = first_time_FindClass; 444 first_time_FindClass = false; 445 446 // Sanity check the name: it cannot be null or larger than the maximum size 447 // name we can fit in the constant pool. 448 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { 449 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 450 } 451 452 //%note jni_3 453 Handle loader; 454 Handle protection_domain; 455 // Find calling class 456 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); 457 if (k.not_null()) { 458 loader = Handle(THREAD, k->class_loader()); 459 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed 460 // in the correct class context. 461 if (loader.is_null() && 462 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { 463 JavaValue result(T_OBJECT); 464 JavaCalls::call_static(&result, k, 465 vmSymbols::getFromClass_name(), 466 vmSymbols::void_class_signature(), 467 thread); 468 if (HAS_PENDING_EXCEPTION) { 469 Handle ex(thread, thread->pending_exception()); 470 CLEAR_PENDING_EXCEPTION; 471 THROW_HANDLE_0(ex); 472 } 473 oop mirror = (oop) result.get_jobject(); 474 loader = Handle(THREAD, 475 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader()); 476 protection_domain = Handle(THREAD, 477 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain()); 478 } 479 } else { 480 // We call ClassLoader.getSystemClassLoader to obtain the system class loader. 481 loader = Handle(THREAD, SystemDictionary::java_system_loader()); 482 } 483 484 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 485 result = find_class_from_class_loader(env, sym, true, loader, 486 protection_domain, true, thread); 487 488 if (TraceClassResolution && result != NULL) { 489 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 490 } 491 492 // If we were the first invocation of jni_FindClass, we enable compilation again 493 // rather than just allowing invocation counter to overflow and decay. 494 // Controlled by flag DelayCompilationDuringStartup. 495 if (first_time && !CompileTheWorld) 496 CompilationPolicy::completed_vm_startup(); 497 498 return result; 499JNI_END 500 501#ifndef USDT2 502DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); 503#else /* USDT2 */ 504DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID 505 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref)); 506#endif /* USDT2 */ 507 508JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) 509 JNIWrapper("FromReflectedMethod"); 510#ifndef USDT2 511 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); 512#else /* USDT2 */ 513 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(env, method); 514#endif /* USDT2 */ 515 jmethodID ret = NULL; 516 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); 517 518 // method is a handle to a java.lang.reflect.Method object 519 oop reflected = JNIHandles::resolve_non_null(method); 520 oop mirror = NULL; 521 int slot = 0; 522 523 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { 524 mirror = java_lang_reflect_Constructor::clazz(reflected); 525 slot = java_lang_reflect_Constructor::slot(reflected); 526 } else { 527 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type"); 528 mirror = java_lang_reflect_Method::clazz(reflected); 529 slot = java_lang_reflect_Method::slot(reflected); 530 } 531 Klass* k = java_lang_Class::as_Klass(mirror); 532 533 KlassHandle k1(THREAD, k); 534 // Make sure class is initialized before handing id's out to methods 535 k1()->initialize(CHECK_NULL); 536 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot); 537 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted 538 return ret; 539JNI_END 540 541#ifndef USDT2 542DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); 543#else /* USDT2 */ 544DT_RETURN_MARK_DECL(FromReflectedField, jfieldID 545 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref)); 546#endif /* USDT2 */ 547 548JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) 549 JNIWrapper("FromReflectedField"); 550#ifndef USDT2 551 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); 552#else /* USDT2 */ 553 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(env, field); 554#endif /* USDT2 */ 555 jfieldID ret = NULL; 556 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); 557 558 // field is a handle to a java.lang.reflect.Field object 559 oop reflected = JNIHandles::resolve_non_null(field); 560 oop mirror = java_lang_reflect_Field::clazz(reflected); 561 Klass* k = java_lang_Class::as_Klass(mirror); 562 int slot = java_lang_reflect_Field::slot(reflected); 563 int modifiers = java_lang_reflect_Field::modifiers(reflected); 564 565 KlassHandle k1(THREAD, k); 566 // Make sure class is initialized before handing id's out to fields 567 k1()->initialize(CHECK_NULL); 568 569 // First check if this is a static field 570 if (modifiers & JVM_ACC_STATIC) { 571 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 572 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset); 573 assert(id != NULL, "corrupt Field object"); 574 debug_only(id->set_is_static_field_id();) 575 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 576 ret = jfieldIDWorkaround::to_static_jfieldID(id); 577 return ret; 578 } 579 580 // The slot is the index of the field description in the field-array 581 // The jfieldID is the offset of the field within the object 582 // It may also have hash bits for k, if VerifyJNIFields is turned on. 583 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 584 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); 585 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); 586 return ret; 587JNI_END 588 589#ifndef USDT2 590DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); 591#else /* USDT2 */ 592DT_RETURN_MARK_DECL(ToReflectedMethod, jobject 593 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref)); 594#endif /* USDT2 */ 595 596JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) 597 JNIWrapper("ToReflectedMethod"); 598#ifndef USDT2 599 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); 600#else /* USDT2 */ 601 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(env, cls, (uintptr_t) method_id, isStatic); 602#endif /* USDT2 */ 603 jobject ret = NULL; 604 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); 605 606 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id)); 607 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); 608 oop reflection_method; 609 if (m->is_initializer()) { 610 reflection_method = Reflection::new_constructor(m, CHECK_NULL); 611 } else { 612 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); 613 } 614 ret = JNIHandles::make_local(env, reflection_method); 615 return ret; 616JNI_END 617 618#ifndef USDT2 619DT_RETURN_MARK_DECL(GetSuperclass, jclass); 620#else /* USDT2 */ 621DT_RETURN_MARK_DECL(GetSuperclass, jclass 622 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref)); 623#endif /* USDT2 */ 624 625JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) 626 JNIWrapper("GetSuperclass"); 627#ifndef USDT2 628 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); 629#else /* USDT2 */ 630 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(env, sub); 631#endif /* USDT2 */ 632 jclass obj = NULL; 633 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); 634 635 oop mirror = JNIHandles::resolve_non_null(sub); 636 // primitive classes return NULL 637 if (java_lang_Class::is_primitive(mirror)) return NULL; 638 639 // Rules of Class.getSuperClass as implemented by KLass::java_super: 640 // arrays return Object 641 // interfaces return NULL 642 // proper classes return Klass::super() 643 Klass* k = java_lang_Class::as_Klass(mirror); 644 if (k->is_interface()) return NULL; 645 646 // return mirror for superclass 647 Klass* super = k->java_super(); 648 // super2 is the value computed by the compiler's getSuperClass intrinsic: 649 debug_only(Klass* super2 = ( k->oop_is_array() 650 ? SystemDictionary::Object_klass() 651 : k->super() ) ); 652 assert(super == super2, 653 "java_super computation depends on interface, array, other super"); 654 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror()); 655 return obj; 656JNI_END 657 658JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) 659 JNIWrapper("IsSubclassOf"); 660#ifndef USDT2 661 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); 662#else /* USDT2 */ 663 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(env, sub, super); 664#endif /* USDT2 */ 665 oop sub_mirror = JNIHandles::resolve_non_null(sub); 666 oop super_mirror = JNIHandles::resolve_non_null(super); 667 if (java_lang_Class::is_primitive(sub_mirror) || 668 java_lang_Class::is_primitive(super_mirror)) { 669 jboolean ret = (sub_mirror == super_mirror); 670#ifndef USDT2 671 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 672#else /* USDT2 */ 673 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret); 674#endif /* USDT2 */ 675 return ret; 676 } 677 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror); 678 Klass* super_klass = java_lang_Class::as_Klass(super_mirror); 679 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom"); 680 jboolean ret = sub_klass->is_subtype_of(super_klass) ? 681 JNI_TRUE : JNI_FALSE; 682#ifndef USDT2 683 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 684#else /* USDT2 */ 685 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret); 686#endif /* USDT2 */ 687 return ret; 688JNI_END 689 690#ifndef USDT2 691DT_RETURN_MARK_DECL(Throw, jint); 692#else /* USDT2 */ 693DT_RETURN_MARK_DECL(Throw, jint 694 , HOTSPOT_JNI_THROW_RETURN(_ret_ref)); 695#endif /* USDT2 */ 696 697JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) 698 JNIWrapper("Throw"); 699#ifndef USDT2 700 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); 701#else /* USDT2 */ 702 HOTSPOT_JNI_THROW_ENTRY(env, obj); 703#endif /* USDT2 */ 704 jint ret = JNI_OK; 705 DT_RETURN_MARK(Throw, jint, (const jint&)ret); 706 707 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); 708 ShouldNotReachHere(); 709JNI_END 710 711#ifndef USDT2 712DT_RETURN_MARK_DECL(ThrowNew, jint); 713#else /* USDT2 */ 714DT_RETURN_MARK_DECL(ThrowNew, jint 715 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref)); 716#endif /* USDT2 */ 717 718JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) 719 JNIWrapper("ThrowNew"); 720#ifndef USDT2 721 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); 722#else /* USDT2 */ 723 HOTSPOT_JNI_THROWNEW_ENTRY(env, clazz, (char *) message); 724#endif /* USDT2 */ 725 jint ret = JNI_OK; 726 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); 727 728 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 729 Symbol* name = k->name(); 730 Handle class_loader (THREAD, k->class_loader()); 731 Handle protection_domain (THREAD, k->protection_domain()); 732 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); 733 ShouldNotReachHere(); 734JNI_END 735 736 737// JNI functions only transform a pending async exception to a synchronous 738// exception in ExceptionOccurred and ExceptionCheck calls, since 739// delivering an async exception in other places won't change the native 740// code's control flow and would be harmful when native code further calls 741// JNI functions with a pending exception. Async exception is also checked 742// during the call, so ExceptionOccurred/ExceptionCheck won't return 743// false but deliver the async exception at the very end during 744// state transition. 745 746static void jni_check_async_exceptions(JavaThread *thread) { 747 assert(thread == Thread::current(), "must be itself"); 748 thread->check_and_handle_async_exceptions(); 749} 750 751JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) 752 JNIWrapper("ExceptionOccurred"); 753#ifndef USDT2 754 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); 755#else /* USDT2 */ 756 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(env); 757#endif /* USDT2 */ 758 jni_check_async_exceptions(thread); 759 oop exception = thread->pending_exception(); 760 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); 761#ifndef USDT2 762 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); 763#else /* USDT2 */ 764 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(ret); 765#endif /* USDT2 */ 766 return ret; 767JNI_END 768 769 770JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) 771 JNIWrapper("ExceptionDescribe"); 772#ifndef USDT2 773 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); 774#else /* USDT2 */ 775 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(env); 776#endif /* USDT2 */ 777 if (thread->has_pending_exception()) { 778 Handle ex(thread, thread->pending_exception()); 779 thread->clear_pending_exception(); 780 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) { 781 // Don't print anything if we are being killed. 782 } else { 783 jio_fprintf(defaultStream::error_stream(), "Exception "); 784 if (thread != NULL && thread->threadObj() != NULL) { 785 ResourceMark rm(THREAD); 786 jio_fprintf(defaultStream::error_stream(), 787 "in thread \"%s\" ", thread->get_thread_name()); 788 } 789 if (ex->is_a(SystemDictionary::Throwable_klass())) { 790 JavaValue result(T_VOID); 791 JavaCalls::call_virtual(&result, 792 ex, 793 KlassHandle(THREAD, 794 SystemDictionary::Throwable_klass()), 795 vmSymbols::printStackTrace_name(), 796 vmSymbols::void_method_signature(), 797 THREAD); 798 // If an exception is thrown in the call it gets thrown away. Not much 799 // we can do with it. The native code that calls this, does not check 800 // for the exception - hence, it might still be in the thread when DestroyVM gets 801 // called, potentially causing a few asserts to trigger - since no pending exception 802 // is expected. 803 CLEAR_PENDING_EXCEPTION; 804 } else { 805 ResourceMark rm(THREAD); 806 jio_fprintf(defaultStream::error_stream(), 807 ". Uncaught exception of type %s.", 808 ex->klass()->external_name()); 809 } 810 } 811 } 812#ifndef USDT2 813 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); 814#else /* USDT2 */ 815 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(); 816#endif /* USDT2 */ 817JNI_END 818 819 820JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) 821 JNIWrapper("ExceptionClear"); 822#ifndef USDT2 823 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); 824#else /* USDT2 */ 825 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(env); 826#endif /* USDT2 */ 827 828 // The jni code might be using this API to clear java thrown exception. 829 // So just mark jvmti thread exception state as exception caught. 830 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); 831 if (state != NULL && state->is_exception_detected()) { 832 state->set_exception_caught(); 833 } 834 thread->clear_pending_exception(); 835#ifndef USDT2 836 DTRACE_PROBE(hotspot_jni, ExceptionClear__return); 837#else /* USDT2 */ 838 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(); 839#endif /* USDT2 */ 840JNI_END 841 842 843JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) 844 JNIWrapper("FatalError"); 845#ifndef USDT2 846 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); 847#else /* USDT2 */ 848 HOTSPOT_JNI_FATALERROR_ENTRY(env, (char *) msg); 849#endif /* USDT2 */ 850 tty->print_cr("FATAL ERROR in native method: %s", msg); 851 thread->print_stack(); 852 os::abort(); // Dump core and abort 853JNI_END 854 855 856JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) 857 JNIWrapper("PushLocalFrame"); 858#ifndef USDT2 859 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); 860#else /* USDT2 */ 861 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(env, capacity); 862#endif /* USDT2 */ 863 //%note jni_11 864 if (capacity < 0 || capacity > MAX_REASONABLE_LOCAL_CAPACITY) { 865#ifndef USDT2 866 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); 867#else /* USDT2 */ 868 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN((uint32_t)JNI_ERR); 869#endif /* USDT2 */ 870 return JNI_ERR; 871 } 872 JNIHandleBlock* old_handles = thread->active_handles(); 873 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 874 assert(new_handles != NULL, "should not be NULL"); 875 new_handles->set_pop_frame_link(old_handles); 876 thread->set_active_handles(new_handles); 877 jint ret = JNI_OK; 878#ifndef USDT2 879 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); 880#else /* USDT2 */ 881 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(ret); 882#endif /* USDT2 */ 883 return ret; 884JNI_END 885 886 887JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) 888 JNIWrapper("PopLocalFrame"); 889#ifndef USDT2 890 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); 891#else /* USDT2 */ 892 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(env, result); 893#endif /* USDT2 */ 894 //%note jni_11 895 Handle result_handle(thread, JNIHandles::resolve(result)); 896 JNIHandleBlock* old_handles = thread->active_handles(); 897 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); 898 if (new_handles != NULL) { 899 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. 900 // This way code will still work if PopLocalFrame is called without a corresponding 901 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise 902 // the release_block call will release the blocks. 903 thread->set_active_handles(new_handles); 904 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below 905 JNIHandleBlock::release_block(old_handles, thread); // may block 906 result = JNIHandles::make_local(thread, result_handle()); 907 } 908#ifndef USDT2 909 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); 910#else /* USDT2 */ 911 HOTSPOT_JNI_POPLOCALFRAME_RETURN(result); 912#endif /* USDT2 */ 913 return result; 914JNI_END 915 916 917JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) 918 JNIWrapper("NewGlobalRef"); 919#ifndef USDT2 920 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); 921#else /* USDT2 */ 922 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(env, ref); 923#endif /* USDT2 */ 924 Handle ref_handle(thread, JNIHandles::resolve(ref)); 925 jobject ret = JNIHandles::make_global(ref_handle); 926#ifndef USDT2 927 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); 928#else /* USDT2 */ 929 HOTSPOT_JNI_NEWGLOBALREF_RETURN(ret); 930#endif /* USDT2 */ 931 return ret; 932JNI_END 933 934// Must be JNI_ENTRY (with HandleMark) 935JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) 936 JNIWrapper("DeleteGlobalRef"); 937#ifndef USDT2 938 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); 939#else /* USDT2 */ 940 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(env, ref); 941#endif /* USDT2 */ 942 JNIHandles::destroy_global(ref); 943#ifndef USDT2 944 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); 945#else /* USDT2 */ 946 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(); 947#endif /* USDT2 */ 948JNI_END 949 950JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) 951 JNIWrapper("DeleteLocalRef"); 952#ifndef USDT2 953 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); 954#else /* USDT2 */ 955 HOTSPOT_JNI_DELETELOCALREF_ENTRY(env, obj); 956#endif /* USDT2 */ 957 JNIHandles::destroy_local(obj); 958#ifndef USDT2 959 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); 960#else /* USDT2 */ 961 HOTSPOT_JNI_DELETELOCALREF_RETURN(); 962#endif /* USDT2 */ 963JNI_END 964 965JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) 966 JNIWrapper("IsSameObject"); 967#ifndef USDT2 968 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); 969#else /* USDT2 */ 970 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(env, r1, r2); 971#endif /* USDT2 */ 972 oop a = JNIHandles::resolve(r1); 973 oop b = JNIHandles::resolve(r2); 974 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; 975#ifndef USDT2 976 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); 977#else /* USDT2 */ 978 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(ret); 979#endif /* USDT2 */ 980 return ret; 981JNI_END 982 983 984JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) 985 JNIWrapper("NewLocalRef"); 986#ifndef USDT2 987 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); 988#else /* USDT2 */ 989 HOTSPOT_JNI_NEWLOCALREF_ENTRY(env, ref); 990#endif /* USDT2 */ 991 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); 992#ifndef USDT2 993 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); 994#else /* USDT2 */ 995 HOTSPOT_JNI_NEWLOCALREF_RETURN(ret); 996#endif /* USDT2 */ 997 return ret; 998JNI_END 999 1000JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) 1001 JNIWrapper("EnsureLocalCapacity"); 1002#ifndef USDT2 1003 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); 1004#else /* USDT2 */ 1005 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(env, capacity); 1006#endif /* USDT2 */ 1007 jint ret; 1008 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) { 1009 ret = JNI_OK; 1010 } else { 1011 ret = JNI_ERR; 1012 } 1013#ifndef USDT2 1014 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); 1015#else /* USDT2 */ 1016 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(ret); 1017#endif /* USDT2 */ 1018 return ret; 1019JNI_END 1020 1021// Return the Handle Type 1022JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) 1023 JNIWrapper("GetObjectRefType"); 1024#ifndef USDT2 1025 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); 1026#else /* USDT2 */ 1027 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(env, obj); 1028#endif /* USDT2 */ 1029 jobjectRefType ret; 1030 if (JNIHandles::is_local_handle(thread, obj) || 1031 JNIHandles::is_frame_handle(thread, obj)) 1032 ret = JNILocalRefType; 1033 else if (JNIHandles::is_global_handle(obj)) 1034 ret = JNIGlobalRefType; 1035 else if (JNIHandles::is_weak_global_handle(obj)) 1036 ret = JNIWeakGlobalRefType; 1037 else 1038 ret = JNIInvalidRefType; 1039#ifndef USDT2 1040 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); 1041#else /* USDT2 */ 1042 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN((void *) ret); 1043#endif /* USDT2 */ 1044 return ret; 1045JNI_END 1046 1047 1048class JNI_ArgumentPusher : public SignatureIterator { 1049 protected: 1050 JavaCallArguments* _arguments; 1051 1052 virtual void get_bool () = 0; 1053 virtual void get_char () = 0; 1054 virtual void get_short () = 0; 1055 virtual void get_byte () = 0; 1056 virtual void get_int () = 0; 1057 virtual void get_long () = 0; 1058 virtual void get_float () = 0; 1059 virtual void get_double () = 0; 1060 virtual void get_object () = 0; 1061 1062 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) { 1063 this->_return_type = T_ILLEGAL; 1064 _arguments = NULL; 1065 } 1066 1067 public: 1068 virtual void iterate( uint64_t fingerprint ) = 0; 1069 1070 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } 1071 1072 inline void do_bool() { if (!is_return_type()) get_bool(); } 1073 inline void do_char() { if (!is_return_type()) get_char(); } 1074 inline void do_short() { if (!is_return_type()) get_short(); } 1075 inline void do_byte() { if (!is_return_type()) get_byte(); } 1076 inline void do_int() { if (!is_return_type()) get_int(); } 1077 inline void do_long() { if (!is_return_type()) get_long(); } 1078 inline void do_float() { if (!is_return_type()) get_float(); } 1079 inline void do_double() { if (!is_return_type()) get_double(); } 1080 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } 1081 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array 1082 inline void do_void() { } 1083 1084 JavaCallArguments* arguments() { return _arguments; } 1085 void push_receiver(Handle h) { _arguments->push_oop(h); } 1086}; 1087 1088 1089class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { 1090 protected: 1091 va_list _ap; 1092 1093 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg 1094 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg 1095 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg 1096 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg 1097 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } 1098 1099 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests 1100 1101 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } 1102 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg 1103 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } 1104 inline void get_object() { jobject l = va_arg(_ap, jobject); 1105 _arguments->push_oop(Handle((oop *)l, false)); } 1106 1107 inline void set_ap(va_list rap) { 1108#ifdef va_copy 1109 va_copy(_ap, rap); 1110#elif defined (__va_copy) 1111 __va_copy(_ap, rap); 1112#else 1113 _ap = rap; 1114#endif 1115 } 1116 1117 public: 1118 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap) 1119 : JNI_ArgumentPusher(signature) { 1120 set_ap(rap); 1121 } 1122 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap) 1123 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1124 set_ap(rap); 1125 } 1126 1127 // Optimized path if we have the bitvector form of signature 1128 void iterate( uint64_t fingerprint ) { 1129 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments 1130 else { 1131 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1132 result_feature_mask); 1133 1134 assert(fingerprint, "Fingerprint should not be 0"); 1135 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1136 while ( 1 ) { 1137 switch ( fingerprint & parameter_feature_mask ) { 1138 case bool_parm: 1139 case char_parm: 1140 case short_parm: 1141 case byte_parm: 1142 case int_parm: 1143 get_int(); 1144 break; 1145 case obj_parm: 1146 get_object(); 1147 break; 1148 case long_parm: 1149 get_long(); 1150 break; 1151 case float_parm: 1152 get_float(); 1153 break; 1154 case double_parm: 1155 get_double(); 1156 break; 1157 case done_parm: 1158 return; 1159 break; 1160 default: 1161 ShouldNotReachHere(); 1162 break; 1163 } 1164 fingerprint >>= parameter_feature_size; 1165 } 1166 } 1167 } 1168}; 1169 1170 1171class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { 1172 protected: 1173 const jvalue *_ap; 1174 1175 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); } 1176 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } 1177 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } 1178 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } 1179 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } 1180 1181 inline void get_long() { _arguments->push_long((_ap++)->j); } 1182 inline void get_float() { _arguments->push_float((_ap++)->f); } 1183 inline void get_double() { _arguments->push_double((_ap++)->d);} 1184 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } 1185 1186 inline void set_ap(const jvalue *rap) { _ap = rap; } 1187 1188 public: 1189 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap) 1190 : JNI_ArgumentPusher(signature) { 1191 set_ap(rap); 1192 } 1193 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap) 1194 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1195 set_ap(rap); 1196 } 1197 1198 // Optimized path if we have the bitvector form of signature 1199 void iterate( uint64_t fingerprint ) { 1200 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments 1201 else { 1202 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1203 result_feature_mask); 1204 assert(fingerprint, "Fingerprint should not be 0"); 1205 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1206 while ( 1 ) { 1207 switch ( fingerprint & parameter_feature_mask ) { 1208 case bool_parm: 1209 get_bool(); 1210 break; 1211 case char_parm: 1212 get_char(); 1213 break; 1214 case short_parm: 1215 get_short(); 1216 break; 1217 case byte_parm: 1218 get_byte(); 1219 break; 1220 case int_parm: 1221 get_int(); 1222 break; 1223 case obj_parm: 1224 get_object(); 1225 break; 1226 case long_parm: 1227 get_long(); 1228 break; 1229 case float_parm: 1230 get_float(); 1231 break; 1232 case double_parm: 1233 get_double(); 1234 break; 1235 case done_parm: 1236 return; 1237 break; 1238 default: 1239 ShouldNotReachHere(); 1240 break; 1241 } 1242 fingerprint >>= parameter_feature_size; 1243 } 1244 } 1245 } 1246}; 1247 1248 1249enum JNICallType { 1250 JNI_STATIC, 1251 JNI_VIRTUAL, 1252 JNI_NONVIRTUAL 1253}; 1254 1255 1256 1257static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1258 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id)); 1259 1260 // Create object to hold arguments for the JavaCall, and associate it with 1261 // the jni parser 1262 ResourceMark rm(THREAD); 1263 int number_of_parameters = method->size_of_parameters(); 1264 JavaCallArguments java_args(number_of_parameters); 1265 args->set_java_argument_object(&java_args); 1266 1267 assert(method->is_static(), "method should be static"); 1268 1269 // Fill out JavaCallArguments object 1270 args->iterate( Fingerprinter(method).fingerprint() ); 1271 // Initialize result type 1272 result->set_type(args->get_ret_type()); 1273 1274 // Invoke the method. Result is returned as oop. 1275 JavaCalls::call(result, method, &java_args, CHECK); 1276 1277 // Convert result 1278 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1279 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1280 } 1281} 1282 1283 1284static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1285 oop recv = JNIHandles::resolve(receiver); 1286 if (recv == NULL) { 1287 THROW(vmSymbols::java_lang_NullPointerException()); 1288 } 1289 Handle h_recv(THREAD, recv); 1290 1291 int number_of_parameters; 1292 Method* selected_method; 1293 { 1294 Method* m = Method::resolve_jmethod_id(method_id); 1295 number_of_parameters = m->size_of_parameters(); 1296 Klass* holder = m->method_holder(); 1297 if (!(holder)->is_interface()) { 1298 // non-interface call -- for that little speed boost, don't handlize 1299 debug_only(No_Safepoint_Verifier nosafepoint;) 1300 if (call_type == JNI_VIRTUAL) { 1301 // jni_GetMethodID makes sure class is linked and initialized 1302 // so m should have a valid vtable index. 1303 assert(!m->has_itable_index(), ""); 1304 int vtbl_index = m->vtable_index(); 1305 if (vtbl_index != Method::nonvirtual_vtable_index) { 1306 Klass* k = h_recv->klass(); 1307 // k might be an arrayKlassOop but all vtables start at 1308 // the same place. The cast is to avoid virtual call and assertion. 1309 InstanceKlass *ik = (InstanceKlass*)k; 1310 selected_method = ik->method_at_vtable(vtbl_index); 1311 } else { 1312 // final method 1313 selected_method = m; 1314 } 1315 } else { 1316 // JNI_NONVIRTUAL call 1317 selected_method = m; 1318 } 1319 } else { 1320 // interface call 1321 KlassHandle h_holder(THREAD, holder); 1322 1323 int itbl_index = m->itable_index(); 1324 Klass* k = h_recv->klass(); 1325 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); 1326 } 1327 } 1328 1329 methodHandle method(THREAD, selected_method); 1330 1331 // Create object to hold arguments for the JavaCall, and associate it with 1332 // the jni parser 1333 ResourceMark rm(THREAD); 1334 JavaCallArguments java_args(number_of_parameters); 1335 args->set_java_argument_object(&java_args); 1336 1337 // handle arguments 1338 assert(!method->is_static(), "method should not be static"); 1339 args->push_receiver(h_recv); // Push jobject handle 1340 1341 // Fill out JavaCallArguments object 1342 args->iterate( Fingerprinter(method).fingerprint() ); 1343 // Initialize result type 1344 result->set_type(args->get_ret_type()); 1345 1346 // Invoke the method. Result is returned as oop. 1347 JavaCalls::call(result, method, &java_args, CHECK); 1348 1349 // Convert result 1350 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1351 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1352 } 1353} 1354 1355 1356static instanceOop alloc_object(jclass clazz, TRAPS) { 1357 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1358 k()->check_valid_for_instantiation(false, CHECK_NULL); 1359 InstanceKlass::cast(k())->initialize(CHECK_NULL); 1360 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD); 1361 return ih; 1362} 1363 1364#ifndef USDT2 1365DT_RETURN_MARK_DECL(AllocObject, jobject); 1366#else /* USDT2 */ 1367DT_RETURN_MARK_DECL(AllocObject, jobject 1368 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref)); 1369#endif /* USDT2 */ 1370 1371JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) 1372 JNIWrapper("AllocObject"); 1373 1374#ifndef USDT2 1375 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); 1376#else /* USDT2 */ 1377 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(env, clazz); 1378#endif /* USDT2 */ 1379 jobject ret = NULL; 1380 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); 1381 1382 instanceOop i = alloc_object(clazz, CHECK_NULL); 1383 ret = JNIHandles::make_local(env, i); 1384 return ret; 1385JNI_END 1386 1387#ifndef USDT2 1388DT_RETURN_MARK_DECL(NewObjectA, jobject); 1389#else /* USDT2 */ 1390DT_RETURN_MARK_DECL(NewObjectA, jobject 1391 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref)); 1392#endif /* USDT2 */ 1393 1394JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) 1395 JNIWrapper("NewObjectA"); 1396#ifndef USDT2 1397 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); 1398#else /* USDT2 */ 1399 HOTSPOT_JNI_NEWOBJECTA_ENTRY(env, clazz, (uintptr_t) methodID); 1400#endif /* USDT2 */ 1401 jobject obj = NULL; 1402 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); 1403 1404 instanceOop i = alloc_object(clazz, CHECK_NULL); 1405 obj = JNIHandles::make_local(env, i); 1406 JavaValue jvalue(T_VOID); 1407 JNI_ArgumentPusherArray ap(methodID, args); 1408 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1409 return obj; 1410JNI_END 1411 1412#ifndef USDT2 1413DT_RETURN_MARK_DECL(NewObjectV, jobject); 1414#else /* USDT2 */ 1415DT_RETURN_MARK_DECL(NewObjectV, jobject 1416 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref)); 1417#endif /* USDT2 */ 1418 1419JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) 1420 JNIWrapper("NewObjectV"); 1421#ifndef USDT2 1422 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); 1423#else /* USDT2 */ 1424 HOTSPOT_JNI_NEWOBJECTV_ENTRY(env, clazz, (uintptr_t) methodID); 1425#endif /* USDT2 */ 1426 jobject obj = NULL; 1427 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); 1428 1429 instanceOop i = alloc_object(clazz, CHECK_NULL); 1430 obj = JNIHandles::make_local(env, i); 1431 JavaValue jvalue(T_VOID); 1432 JNI_ArgumentPusherVaArg ap(methodID, args); 1433 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1434 return obj; 1435JNI_END 1436 1437#ifndef USDT2 1438DT_RETURN_MARK_DECL(NewObject, jobject); 1439#else /* USDT2 */ 1440DT_RETURN_MARK_DECL(NewObject, jobject 1441 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref)); 1442#endif /* USDT2 */ 1443 1444JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) 1445 JNIWrapper("NewObject"); 1446#ifndef USDT2 1447 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); 1448#else /* USDT2 */ 1449 HOTSPOT_JNI_NEWOBJECT_ENTRY(env, clazz, (uintptr_t) methodID); 1450#endif /* USDT2 */ 1451 jobject obj = NULL; 1452 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); 1453 1454 instanceOop i = alloc_object(clazz, CHECK_NULL); 1455 obj = JNIHandles::make_local(env, i); 1456 va_list args; 1457 va_start(args, methodID); 1458 JavaValue jvalue(T_VOID); 1459 JNI_ArgumentPusherVaArg ap(methodID, args); 1460 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1461 va_end(args); 1462 return obj; 1463JNI_END 1464 1465 1466JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) 1467 JNIWrapper("GetObjectClass"); 1468#ifndef USDT2 1469 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); 1470#else /* USDT2 */ 1471 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(env, obj); 1472#endif /* USDT2 */ 1473 Klass* k = JNIHandles::resolve_non_null(obj)->klass(); 1474 jclass ret = 1475 (jclass) JNIHandles::make_local(env, k->java_mirror()); 1476#ifndef USDT2 1477 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); 1478#else /* USDT2 */ 1479 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(ret); 1480#endif /* USDT2 */ 1481 return ret; 1482JNI_END 1483 1484JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) 1485 JNIWrapper("IsInstanceOf"); 1486#ifndef USDT2 1487 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); 1488#else /* USDT2 */ 1489 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(env, obj, clazz); 1490#endif /* USDT2 */ 1491 jboolean ret = JNI_TRUE; 1492 if (obj != NULL) { 1493 ret = JNI_FALSE; 1494 Klass* k = java_lang_Class::as_Klass( 1495 JNIHandles::resolve_non_null(clazz)); 1496 if (k != NULL) { 1497 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; 1498 } 1499 } 1500#ifndef USDT2 1501 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); 1502#else /* USDT2 */ 1503 HOTSPOT_JNI_ISINSTANCEOF_RETURN(ret); 1504#endif /* USDT2 */ 1505 return ret; 1506JNI_END 1507 1508 1509static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, 1510 const char *sig, bool is_static, TRAPS) { 1511 // %%%% This code should probably just call into a method in the LinkResolver 1512 // 1513 // The class should have been loaded (we have an instance of the class 1514 // passed in) so the method and signature should already be in the symbol 1515 // table. If they're not there, the method doesn't exist. 1516 const char *name_to_probe = (name_str == NULL) 1517 ? vmSymbols::object_initializer_name()->as_C_string() 1518 : name_str; 1519 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe)); 1520 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig)); 1521 1522 if (name == NULL || signature == NULL) { 1523 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1524 } 1525 1526 // Throw a NoSuchMethodError exception if we have an instance of a 1527 // primitive java.lang.Class 1528 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { 1529 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1530 } 1531 1532 KlassHandle klass(THREAD, 1533 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1534 1535 // Make sure class is linked and initialized before handing id's out to 1536 // Method*s. 1537 klass()->initialize(CHECK_NULL); 1538 1539 Method* m; 1540 if (name == vmSymbols::object_initializer_name() || 1541 name == vmSymbols::class_initializer_name()) { 1542 // Never search superclasses for constructors 1543 if (klass->oop_is_instance()) { 1544 m = InstanceKlass::cast(klass())->find_method(name, signature); 1545 } else { 1546 m = NULL; 1547 } 1548 } else { 1549 m = klass->lookup_method(name, signature); 1550 if (m == NULL && klass->oop_is_instance()) { 1551 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature); 1552 } 1553 } 1554 if (m == NULL || (m->is_static() != is_static)) { 1555 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1556 } 1557 return m->jmethod_id(); 1558} 1559 1560 1561JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, 1562 const char *name, const char *sig)) 1563 JNIWrapper("GetMethodID"); 1564#ifndef USDT2 1565 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); 1566#else /* USDT2 */ 1567 HOTSPOT_JNI_GETMETHODID_ENTRY(env, clazz, (char *) name, (char *) sig); 1568#endif /* USDT2 */ 1569 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); 1570#ifndef USDT2 1571 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); 1572#else /* USDT2 */ 1573 HOTSPOT_JNI_GETMETHODID_RETURN((uintptr_t) ret); 1574#endif /* USDT2 */ 1575 return ret; 1576JNI_END 1577 1578 1579JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, 1580 const char *name, const char *sig)) 1581 JNIWrapper("GetStaticMethodID"); 1582#ifndef USDT2 1583 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); 1584#else /* USDT2 */ 1585 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(env, (char *) clazz, (char *) name, (char *)sig); 1586#endif /* USDT2 */ 1587 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); 1588#ifndef USDT2 1589 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); 1590#else /* USDT2 */ 1591 HOTSPOT_JNI_GETSTATICMETHODID_RETURN((uintptr_t) ret); 1592#endif /* USDT2 */ 1593 return ret; 1594JNI_END 1595 1596 1597 1598// 1599// Calling Methods 1600// 1601 1602#ifndef USDT2 1603#define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ 1604\ 1605 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ 1606 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ 1607 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ 1608\ 1609JNI_ENTRY(ResultType, \ 1610 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1611 JNIWrapper("Call" XSTR(Result) "Method"); \ 1612\ 1613 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \ 1614 ResultType ret = 0;\ 1615 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1616 (const ResultType&)ret);\ 1617\ 1618 va_list args; \ 1619 va_start(args, methodID); \ 1620 JavaValue jvalue(Tag); \ 1621 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1622 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1623 va_end(args); \ 1624 ret = jvalue.get_##ResultType(); \ 1625 return ret;\ 1626JNI_END \ 1627\ 1628\ 1629JNI_ENTRY(ResultType, \ 1630 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1631 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1632\ 1633 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \ 1634 ResultType ret = 0;\ 1635 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1636 (const ResultType&)ret);\ 1637\ 1638 JavaValue jvalue(Tag); \ 1639 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1640 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1641 ret = jvalue.get_##ResultType(); \ 1642 return ret;\ 1643JNI_END \ 1644\ 1645\ 1646JNI_ENTRY(ResultType, \ 1647 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1648 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1649 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \ 1650 ResultType ret = 0;\ 1651 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1652 (const ResultType&)ret);\ 1653\ 1654 JavaValue jvalue(Tag); \ 1655 JNI_ArgumentPusherArray ap(methodID, args); \ 1656 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1657 ret = jvalue.get_##ResultType(); \ 1658 return ret;\ 1659JNI_END 1660 1661// the runtime type of subword integral basic types is integer 1662DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) 1663DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) 1664DEFINE_CALLMETHOD(jchar, Char, T_CHAR) 1665DEFINE_CALLMETHOD(jshort, Short, T_SHORT) 1666 1667DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) 1668DEFINE_CALLMETHOD(jint, Int, T_INT) 1669DEFINE_CALLMETHOD(jlong, Long, T_LONG) 1670DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) 1671DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) 1672 1673DT_VOID_RETURN_MARK_DECL(CallVoidMethod); 1674DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); 1675DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); 1676 1677#else /* USDT2 */ 1678 1679#define DEFINE_CALLMETHOD(ResultType, Result, Tag \ 1680 , EntryProbe, ReturnProbe) \ 1681\ 1682 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \ 1683 , ReturnProbe); \ 1684\ 1685JNI_ENTRY(ResultType, \ 1686 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1687 JNIWrapper("Call" XSTR(Result) "Method"); \ 1688\ 1689 EntryProbe; \ 1690 ResultType ret = 0;\ 1691 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1692 (const ResultType&)ret);\ 1693\ 1694 va_list args; \ 1695 va_start(args, methodID); \ 1696 JavaValue jvalue(Tag); \ 1697 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1698 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1699 va_end(args); \ 1700 ret = jvalue.get_##ResultType(); \ 1701 return ret;\ 1702JNI_END 1703 1704// the runtime type of subword integral basic types is integer 1705DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN 1706 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1707 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1708DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE 1709 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1710 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1711DEFINE_CALLMETHOD(jchar, Char, T_CHAR 1712 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1713 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1714DEFINE_CALLMETHOD(jshort, Short, T_SHORT 1715 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1716 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1717 1718DEFINE_CALLMETHOD(jobject, Object, T_OBJECT 1719 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1720 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1721DEFINE_CALLMETHOD(jint, Int, T_INT, 1722 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1723 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1724DEFINE_CALLMETHOD(jlong, Long, T_LONG 1725 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1726 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1727// Float and double probes don't return value because dtrace doesn't currently support it 1728DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT 1729 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1730 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1731DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE 1732 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1733 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1734 1735#define DEFINE_CALLMETHODV(ResultType, Result, Tag \ 1736 , EntryProbe, ReturnProbe) \ 1737\ 1738 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \ 1739 , ReturnProbe); \ 1740\ 1741JNI_ENTRY(ResultType, \ 1742 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1743 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1744\ 1745 EntryProbe;\ 1746 ResultType ret = 0;\ 1747 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1748 (const ResultType&)ret);\ 1749\ 1750 JavaValue jvalue(Tag); \ 1751 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1752 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1753 ret = jvalue.get_##ResultType(); \ 1754 return ret;\ 1755JNI_END 1756 1757// the runtime type of subword integral basic types is integer 1758DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN 1759 , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1760 HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref)) 1761DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE 1762 , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1763 HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref)) 1764DEFINE_CALLMETHODV(jchar, Char, T_CHAR 1765 , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1766 HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref)) 1767DEFINE_CALLMETHODV(jshort, Short, T_SHORT 1768 , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1769 HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref)) 1770 1771DEFINE_CALLMETHODV(jobject, Object, T_OBJECT 1772 , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1773 HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref)) 1774DEFINE_CALLMETHODV(jint, Int, T_INT, 1775 HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1776 HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref)) 1777DEFINE_CALLMETHODV(jlong, Long, T_LONG 1778 , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1779 HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref)) 1780// Float and double probes don't return value because dtrace doesn't currently support it 1781DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT 1782 , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1783 HOTSPOT_JNI_CALLFLOATMETHODV_RETURN()) 1784DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE 1785 , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID), 1786 HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN()) 1787 1788#define DEFINE_CALLMETHODA(ResultType, Result, Tag \ 1789 , EntryProbe, ReturnProbe) \ 1790\ 1791 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \ 1792 , ReturnProbe); \ 1793\ 1794JNI_ENTRY(ResultType, \ 1795 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1796 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1797 EntryProbe; \ 1798 ResultType ret = 0;\ 1799 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1800 (const ResultType&)ret);\ 1801\ 1802 JavaValue jvalue(Tag); \ 1803 JNI_ArgumentPusherArray ap(methodID, args); \ 1804 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1805 ret = jvalue.get_##ResultType(); \ 1806 return ret;\ 1807JNI_END 1808 1809// the runtime type of subword integral basic types is integer 1810DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN 1811 , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1812 HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref)) 1813DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE 1814 , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1815 HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref)) 1816DEFINE_CALLMETHODA(jchar, Char, T_CHAR 1817 , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1818 HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref)) 1819DEFINE_CALLMETHODA(jshort, Short, T_SHORT 1820 , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1821 HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref)) 1822 1823DEFINE_CALLMETHODA(jobject, Object, T_OBJECT 1824 , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1825 HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref)) 1826DEFINE_CALLMETHODA(jint, Int, T_INT, 1827 HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1828 HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref)) 1829DEFINE_CALLMETHODA(jlong, Long, T_LONG 1830 , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1831 HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref)) 1832// Float and double probes don't return value because dtrace doesn't currently support it 1833DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT 1834 , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1835 HOTSPOT_JNI_CALLFLOATMETHODA_RETURN()) 1836DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE 1837 , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID), 1838 HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN()) 1839 1840DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN()); 1841DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN()); 1842DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN()); 1843 1844#endif /* USDT2 */ 1845 1846JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) 1847 JNIWrapper("CallVoidMethod"); 1848#ifndef USDT2 1849 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); 1850#else /* USDT2 */ 1851 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(env, obj, (uintptr_t) methodID); 1852#endif /* USDT2 */ 1853 DT_VOID_RETURN_MARK(CallVoidMethod); 1854 1855 va_list args; 1856 va_start(args, methodID); 1857 JavaValue jvalue(T_VOID); 1858 JNI_ArgumentPusherVaArg ap(methodID, args); 1859 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1860 va_end(args); 1861JNI_END 1862 1863 1864JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) 1865 JNIWrapper("CallVoidMethodV"); 1866#ifndef USDT2 1867 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); 1868#else /* USDT2 */ 1869 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(env, obj, (uintptr_t) methodID); 1870#endif /* USDT2 */ 1871 DT_VOID_RETURN_MARK(CallVoidMethodV); 1872 1873 JavaValue jvalue(T_VOID); 1874 JNI_ArgumentPusherVaArg ap(methodID, args); 1875 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1876JNI_END 1877 1878 1879JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) 1880 JNIWrapper("CallVoidMethodA"); 1881#ifndef USDT2 1882 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); 1883#else /* USDT2 */ 1884 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(env, obj, (uintptr_t) methodID); 1885#endif /* USDT2 */ 1886 DT_VOID_RETURN_MARK(CallVoidMethodA); 1887 1888 JavaValue jvalue(T_VOID); 1889 JNI_ArgumentPusherArray ap(methodID, args); 1890 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1891JNI_END 1892 1893 1894#ifndef USDT2 1895#define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ 1896\ 1897 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ 1898 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ 1899 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ 1900\ 1901JNI_ENTRY(ResultType, \ 1902 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1903 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1904\ 1905 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ 1906 ResultType ret;\ 1907 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1908 (const ResultType&)ret);\ 1909\ 1910 va_list args; \ 1911 va_start(args, methodID); \ 1912 JavaValue jvalue(Tag); \ 1913 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1914 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1915 va_end(args); \ 1916 ret = jvalue.get_##ResultType(); \ 1917 return ret;\ 1918JNI_END \ 1919\ 1920JNI_ENTRY(ResultType, \ 1921 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 1922 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ 1923 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ 1924 ResultType ret;\ 1925 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 1926 (const ResultType&)ret);\ 1927\ 1928 JavaValue jvalue(Tag); \ 1929 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1930 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1931 ret = jvalue.get_##ResultType(); \ 1932 return ret;\ 1933JNI_END \ 1934\ 1935JNI_ENTRY(ResultType, \ 1936 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 1937 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 1938 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ 1939 ResultType ret;\ 1940 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 1941 (const ResultType&)ret);\ 1942\ 1943 JavaValue jvalue(Tag); \ 1944 JNI_ArgumentPusherArray ap(methodID, args); \ 1945 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1946 ret = jvalue.get_##ResultType(); \ 1947 return ret;\ 1948JNI_END 1949 1950// the runtime type of subword integral basic types is integer 1951DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) 1952DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) 1953DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) 1954DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) 1955 1956DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) 1957DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) 1958DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) 1959DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) 1960DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) 1961 1962 1963DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); 1964DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); 1965DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); 1966 1967#else /* USDT2 */ 1968 1969#define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \ 1970 , EntryProbe, ReturnProbe) \ 1971\ 1972 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \ 1973 , ReturnProbe);\ 1974\ 1975JNI_ENTRY(ResultType, \ 1976 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1977 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1978\ 1979 EntryProbe;\ 1980 ResultType ret;\ 1981 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1982 (const ResultType&)ret);\ 1983\ 1984 va_list args; \ 1985 va_start(args, methodID); \ 1986 JavaValue jvalue(Tag); \ 1987 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1988 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1989 va_end(args); \ 1990 ret = jvalue.get_##ResultType(); \ 1991 return ret;\ 1992JNI_END 1993 1994// the runtime type of subword integral basic types is integer 1995DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN 1996 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 1997 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref)) 1998DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE 1999 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2000 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref)) 2001DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR 2002 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2003 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref)) 2004DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT 2005 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2006 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref)) 2007 2008DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT 2009 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2010 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref)) 2011DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT 2012 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2013 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref)) 2014DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG 2015 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2016// Float and double probes don't return value because dtrace doesn't currently support it 2017 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref)) 2018DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT 2019 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2020 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN()) 2021DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE 2022 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2023 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN()) 2024 2025#define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \ 2026 , EntryProbe, ReturnProbe) \ 2027\ 2028 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \ 2029 , ReturnProbe);\ 2030\ 2031JNI_ENTRY(ResultType, \ 2032 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2033 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \ 2034\ 2035 EntryProbe;\ 2036 ResultType ret;\ 2037 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2038 (const ResultType&)ret);\ 2039\ 2040 JavaValue jvalue(Tag); \ 2041 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2042 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2043 ret = jvalue.get_##ResultType(); \ 2044 return ret;\ 2045JNI_END 2046 2047// the runtime type of subword integral basic types is integer 2048DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN 2049 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2050 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref)) 2051DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE 2052 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2053 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref)) 2054DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR 2055 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2056 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref)) 2057DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT 2058 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2059 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref)) 2060 2061DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT 2062 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2063 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref)) 2064DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT 2065 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2066 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref)) 2067DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG 2068 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2069// Float and double probes don't return value because dtrace doesn't currently support it 2070 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref)) 2071DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT 2072 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2073 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN()) 2074DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE 2075 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2076 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN()) 2077 2078#define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \ 2079 , EntryProbe, ReturnProbe) \ 2080\ 2081 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \ 2082 , ReturnProbe);\ 2083\ 2084JNI_ENTRY(ResultType, \ 2085 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2086 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2087\ 2088 EntryProbe;\ 2089 ResultType ret;\ 2090 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2091 (const ResultType&)ret);\ 2092\ 2093 JavaValue jvalue(Tag); \ 2094 JNI_ArgumentPusherArray ap(methodID, args); \ 2095 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2096 ret = jvalue.get_##ResultType(); \ 2097 return ret;\ 2098JNI_END 2099 2100// the runtime type of subword integral basic types is integer 2101DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN 2102 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2103 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref)) 2104DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE 2105 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2106 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref)) 2107DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR 2108 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2109 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref)) 2110DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT 2111 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2112 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref)) 2113 2114DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT 2115 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2116 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref)) 2117DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT 2118 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2119 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref)) 2120DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG 2121 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2122// Float and double probes don't return value because dtrace doesn't currently support it 2123 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref)) 2124DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT 2125 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2126 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN()) 2127DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE 2128 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2129 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN()) 2130 2131DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod 2132 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN()); 2133DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV 2134 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN()); 2135DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA 2136 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN()); 2137#endif /* USDT2 */ 2138 2139JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) 2140 JNIWrapper("CallNonvirtualVoidMethod"); 2141 2142#ifndef USDT2 2143 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, 2144 env, obj, cls, methodID); 2145#else /* USDT2 */ 2146 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(env, obj, cls, (uintptr_t) methodID); 2147#endif /* USDT2 */ 2148 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); 2149 2150 va_list args; 2151 va_start(args, methodID); 2152 JavaValue jvalue(T_VOID); 2153 JNI_ArgumentPusherVaArg ap(methodID, args); 2154 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2155 va_end(args); 2156JNI_END 2157 2158 2159JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) 2160 JNIWrapper("CallNonvirtualVoidMethodV"); 2161 2162#ifndef USDT2 2163 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, 2164 env, obj, cls, methodID); 2165#else /* USDT2 */ 2166 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY( 2167 env, obj, cls, (uintptr_t) methodID); 2168#endif /* USDT2 */ 2169 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); 2170 2171 JavaValue jvalue(T_VOID); 2172 JNI_ArgumentPusherVaArg ap(methodID, args); 2173 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2174JNI_END 2175 2176 2177JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) 2178 JNIWrapper("CallNonvirtualVoidMethodA"); 2179#ifndef USDT2 2180 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, 2181 env, obj, cls, methodID); 2182#else /* USDT2 */ 2183 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY( 2184 env, obj, cls, (uintptr_t) methodID); 2185#endif /* USDT2 */ 2186 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); 2187 JavaValue jvalue(T_VOID); 2188 JNI_ArgumentPusherArray ap(methodID, args); 2189 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2190JNI_END 2191 2192 2193#ifndef USDT2 2194#define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ 2195\ 2196 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ 2197 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ 2198 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ 2199\ 2200JNI_ENTRY(ResultType, \ 2201 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2202 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2203\ 2204 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ 2205 ResultType ret = 0;\ 2206 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2207 (const ResultType&)ret);\ 2208\ 2209 va_list args; \ 2210 va_start(args, methodID); \ 2211 JavaValue jvalue(Tag); \ 2212 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2213 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2214 va_end(args); \ 2215 ret = jvalue.get_##ResultType(); \ 2216 return ret;\ 2217JNI_END \ 2218\ 2219JNI_ENTRY(ResultType, \ 2220 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2221 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2222 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ 2223 ResultType ret = 0;\ 2224 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2225 (const ResultType&)ret);\ 2226\ 2227 JavaValue jvalue(Tag); \ 2228 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2229 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2230 ret = jvalue.get_##ResultType(); \ 2231 return ret;\ 2232JNI_END \ 2233\ 2234JNI_ENTRY(ResultType, \ 2235 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2236 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2237 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ 2238 ResultType ret = 0;\ 2239 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2240 (const ResultType&)ret);\ 2241\ 2242 JavaValue jvalue(Tag); \ 2243 JNI_ArgumentPusherArray ap(methodID, args); \ 2244 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2245 ret = jvalue.get_##ResultType(); \ 2246 return ret;\ 2247JNI_END 2248 2249// the runtime type of subword integral basic types is integer 2250DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) 2251DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) 2252DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) 2253DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) 2254 2255DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) 2256DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) 2257DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) 2258DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) 2259DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) 2260 2261 2262DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); 2263DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); 2264DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); 2265 2266#else /* USDT2 */ 2267 2268#define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \ 2269 , EntryProbe, ResultProbe) \ 2270\ 2271 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \ 2272 , ResultProbe); \ 2273\ 2274JNI_ENTRY(ResultType, \ 2275 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2276 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2277\ 2278 EntryProbe; \ 2279 ResultType ret = 0;\ 2280 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2281 (const ResultType&)ret);\ 2282\ 2283 va_list args; \ 2284 va_start(args, methodID); \ 2285 JavaValue jvalue(Tag); \ 2286 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2287 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2288 va_end(args); \ 2289 ret = jvalue.get_##ResultType(); \ 2290 return ret;\ 2291JNI_END 2292 2293// the runtime type of subword integral basic types is integer 2294DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN 2295 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2296 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref)); 2297DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE 2298 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2299 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref)); 2300DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR 2301 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2302 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref)); 2303DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT 2304 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2305 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref)); 2306 2307DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT 2308 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2309 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref)); 2310DEFINE_CALLSTATICMETHOD(jint, Int, T_INT 2311 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2312 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref)); 2313DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG 2314 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2315 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref)); 2316// Float and double probes don't return value because dtrace doesn't currently support it 2317DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT 2318 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2319 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN()); 2320DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE 2321 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2322 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN()); 2323 2324#define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \ 2325 , EntryProbe, ResultProbe) \ 2326\ 2327 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \ 2328 , ResultProbe); \ 2329\ 2330JNI_ENTRY(ResultType, \ 2331 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2332 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2333\ 2334 EntryProbe; \ 2335 ResultType ret = 0;\ 2336 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2337 (const ResultType&)ret);\ 2338\ 2339 JavaValue jvalue(Tag); \ 2340 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2341 /* Make sure class is initialized before trying to invoke its method */ \ 2342 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \ 2343 k()->initialize(CHECK_0); \ 2344 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2345 va_end(args); \ 2346 ret = jvalue.get_##ResultType(); \ 2347 return ret;\ 2348JNI_END 2349 2350// the runtime type of subword integral basic types is integer 2351DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN 2352 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2353 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref)); 2354DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE 2355 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2356 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref)); 2357DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR 2358 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2359 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref)); 2360DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT 2361 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2362 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref)); 2363 2364DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT 2365 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2366 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref)); 2367DEFINE_CALLSTATICMETHODV(jint, Int, T_INT 2368 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2369 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref)); 2370DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG 2371 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2372 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref)); 2373// Float and double probes don't return value because dtrace doesn't currently support it 2374DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT 2375 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2376 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN()); 2377DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE 2378 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2379 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN()); 2380 2381#define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \ 2382 , EntryProbe, ResultProbe) \ 2383\ 2384 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \ 2385 , ResultProbe); \ 2386\ 2387JNI_ENTRY(ResultType, \ 2388 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2389 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2390\ 2391 EntryProbe; \ 2392 ResultType ret = 0;\ 2393 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2394 (const ResultType&)ret);\ 2395\ 2396 JavaValue jvalue(Tag); \ 2397 JNI_ArgumentPusherArray ap(methodID, args); \ 2398 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2399 ret = jvalue.get_##ResultType(); \ 2400 return ret;\ 2401JNI_END 2402 2403// the runtime type of subword integral basic types is integer 2404DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN 2405 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2406 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref)); 2407DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE 2408 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2409 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref)); 2410DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR 2411 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2412 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref)); 2413DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT 2414 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2415 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref)); 2416 2417DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT 2418 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2419 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref)); 2420DEFINE_CALLSTATICMETHODA(jint, Int, T_INT 2421 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2422 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref)); 2423DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG 2424 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2425 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref)); 2426// Float and double probes don't return value because dtrace doesn't currently support it 2427DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT 2428 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2429 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN()); 2430DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE 2431 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2432 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN()); 2433 2434DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod 2435 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN()); 2436DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV 2437 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN()); 2438DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA 2439 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN()); 2440#endif /* USDT2 */ 2441 2442JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) 2443 JNIWrapper("CallStaticVoidMethod"); 2444#ifndef USDT2 2445 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); 2446#else /* USDT2 */ 2447 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(env, cls, (uintptr_t) methodID); 2448#endif /* USDT2 */ 2449 DT_VOID_RETURN_MARK(CallStaticVoidMethod); 2450 2451 va_list args; 2452 va_start(args, methodID); 2453 JavaValue jvalue(T_VOID); 2454 JNI_ArgumentPusherVaArg ap(methodID, args); 2455 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2456 va_end(args); 2457JNI_END 2458 2459 2460JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) 2461 JNIWrapper("CallStaticVoidMethodV"); 2462#ifndef USDT2 2463 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); 2464#else /* USDT2 */ 2465 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(env, cls, (uintptr_t) methodID); 2466#endif /* USDT2 */ 2467 DT_VOID_RETURN_MARK(CallStaticVoidMethodV); 2468 2469 JavaValue jvalue(T_VOID); 2470 JNI_ArgumentPusherVaArg ap(methodID, args); 2471 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2472JNI_END 2473 2474 2475JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) 2476 JNIWrapper("CallStaticVoidMethodA"); 2477#ifndef USDT2 2478 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); 2479#else /* USDT2 */ 2480 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(env, cls, (uintptr_t) methodID); 2481#endif /* USDT2 */ 2482 DT_VOID_RETURN_MARK(CallStaticVoidMethodA); 2483 2484 JavaValue jvalue(T_VOID); 2485 JNI_ArgumentPusherArray ap(methodID, args); 2486 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2487JNI_END 2488 2489 2490// 2491// Accessing Fields 2492// 2493 2494 2495#ifndef USDT2 2496DT_RETURN_MARK_DECL(GetFieldID, jfieldID); 2497#else /* USDT2 */ 2498DT_RETURN_MARK_DECL(GetFieldID, jfieldID 2499 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref)); 2500#endif /* USDT2 */ 2501 2502JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, 2503 const char *name, const char *sig)) 2504 JNIWrapper("GetFieldID"); 2505#ifndef USDT2 2506 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); 2507#else /* USDT2 */ 2508 HOTSPOT_JNI_GETFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig); 2509#endif /* USDT2 */ 2510 jfieldID ret = 0; 2511 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); 2512 2513 // The class should have been loaded (we have an instance of the class 2514 // passed in) so the field and signature should already be in the symbol 2515 // table. If they're not there, the field doesn't exist. 2516 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2517 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2518 if (fieldname == NULL || signame == NULL) { 2519 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2520 } 2521 KlassHandle k(THREAD, 2522 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2523 // Make sure class is initialized before handing id's out to fields 2524 k()->initialize(CHECK_NULL); 2525 2526 fieldDescriptor fd; 2527 if (!k()->oop_is_instance() || 2528 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) { 2529 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2530 } 2531 2532 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop 2533 // It may also have hash bits for k, if VerifyJNIFields is turned on. 2534 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); 2535 return ret; 2536JNI_END 2537 2538 2539JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) 2540 JNIWrapper("GetObjectField"); 2541#ifndef USDT2 2542 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); 2543#else /* USDT2 */ 2544 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID); 2545#endif /* USDT2 */ 2546 oop o = JNIHandles::resolve_non_null(obj); 2547 Klass* k = o->klass(); 2548 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2549 // Keep JVMTI addition small and only check enabled flag here. 2550 // jni_GetField_probe() assumes that is okay to create handles. 2551 if (JvmtiExport::should_post_field_access()) { 2552 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); 2553 } 2554 jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); 2555#if INCLUDE_ALL_GCS 2556 // If G1 is enabled and we are accessing the value of the referent 2557 // field in a reference object then we need to register a non-null 2558 // referent with the SATB barrier. 2559 if (UseG1GC) { 2560 bool needs_barrier = false; 2561 2562 if (ret != NULL && 2563 offset == java_lang_ref_Reference::referent_offset && 2564 InstanceKlass::cast(k)->reference_type() != REF_NONE) { 2565 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); 2566 needs_barrier = true; 2567 } 2568 2569 if (needs_barrier) { 2570 oop referent = JNIHandles::resolve(ret); 2571 G1SATBCardTableModRefBS::enqueue(referent); 2572 } 2573 } 2574#endif // INCLUDE_ALL_GCS 2575#ifndef USDT2 2576 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); 2577#else /* USDT2 */ 2578HOTSPOT_JNI_GETOBJECTFIELD_RETURN(ret); 2579#endif /* USDT2 */ 2580 return ret; 2581JNI_END 2582 2583 2584#ifndef USDT2 2585#define DEFINE_GETFIELD(Return,Fieldname,Result) \ 2586\ 2587 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ 2588\ 2589JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2590 JNIWrapper("Get" XSTR(Result) "Field"); \ 2591\ 2592 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ 2593 Return ret = 0;\ 2594 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2595\ 2596 oop o = JNIHandles::resolve_non_null(obj); \ 2597 Klass* k = o->klass(); \ 2598 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2599 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2600 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2601 /* and creates a ResetNoHandleMark. */ \ 2602 if (JvmtiExport::should_post_field_access()) { \ 2603 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2604 } \ 2605 ret = o->Fieldname##_field(offset); \ 2606 return ret; \ 2607JNI_END 2608 2609DEFINE_GETFIELD(jboolean, bool, Boolean) 2610DEFINE_GETFIELD(jbyte, byte, Byte) 2611DEFINE_GETFIELD(jchar, char, Char) 2612DEFINE_GETFIELD(jshort, short, Short) 2613DEFINE_GETFIELD(jint, int, Int) 2614DEFINE_GETFIELD(jlong, long, Long) 2615DEFINE_GETFIELD(jfloat, float, Float) 2616DEFINE_GETFIELD(jdouble, double, Double) 2617 2618#else /* USDT2 */ 2619 2620#define DEFINE_GETFIELD(Return,Fieldname,Result \ 2621 , EntryProbe, ReturnProbe) \ 2622\ 2623 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \ 2624 , ReturnProbe); \ 2625\ 2626JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2627 JNIWrapper("Get" XSTR(Result) "Field"); \ 2628\ 2629 EntryProbe; \ 2630 Return ret = 0;\ 2631 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2632\ 2633 oop o = JNIHandles::resolve_non_null(obj); \ 2634 Klass* k = o->klass(); \ 2635 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2636 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2637 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2638 /* and creates a ResetNoHandleMark. */ \ 2639 if (JvmtiExport::should_post_field_access()) { \ 2640 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2641 } \ 2642 ret = o->Fieldname##_field(offset); \ 2643 return ret; \ 2644JNI_END 2645 2646DEFINE_GETFIELD(jboolean, bool, Boolean 2647 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2648 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref)) 2649DEFINE_GETFIELD(jbyte, byte, Byte 2650 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2651 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref)) 2652DEFINE_GETFIELD(jchar, char, Char 2653 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2654 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref)) 2655DEFINE_GETFIELD(jshort, short, Short 2656 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2657 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref)) 2658DEFINE_GETFIELD(jint, int, Int 2659 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2660 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref)) 2661DEFINE_GETFIELD(jlong, long, Long 2662 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2663 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref)) 2664// Float and double probes don't return value because dtrace doesn't currently support it 2665DEFINE_GETFIELD(jfloat, float, Float 2666 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2667 HOTSPOT_JNI_GETFLOATFIELD_RETURN()) 2668DEFINE_GETFIELD(jdouble, double, Double 2669 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2670 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN()) 2671#endif /* USDT2 */ 2672 2673address jni_GetBooleanField_addr() { 2674 return (address)jni_GetBooleanField; 2675} 2676address jni_GetByteField_addr() { 2677 return (address)jni_GetByteField; 2678} 2679address jni_GetCharField_addr() { 2680 return (address)jni_GetCharField; 2681} 2682address jni_GetShortField_addr() { 2683 return (address)jni_GetShortField; 2684} 2685address jni_GetIntField_addr() { 2686 return (address)jni_GetIntField; 2687} 2688address jni_GetLongField_addr() { 2689 return (address)jni_GetLongField; 2690} 2691address jni_GetFloatField_addr() { 2692 return (address)jni_GetFloatField; 2693} 2694address jni_GetDoubleField_addr() { 2695 return (address)jni_GetDoubleField; 2696} 2697 2698JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) 2699 JNIWrapper("SetObjectField"); 2700#ifndef USDT2 2701 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); 2702#else /* USDT2 */ 2703 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID, value); 2704#endif /* USDT2 */ 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_SetField_probe_nh() assumes that is not okay to create handles 2710 // and creates a ResetNoHandleMark. 2711 if (JvmtiExport::should_post_field_modification()) { 2712 jvalue field_value; 2713 field_value.l = value; 2714 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); 2715 } 2716 o->obj_field_put(offset, JNIHandles::resolve(value)); 2717#ifndef USDT2 2718 DTRACE_PROBE(hotspot_jni, SetObjectField__return); 2719#else /* USDT2 */ 2720 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(); 2721#endif /* USDT2 */ 2722JNI_END 2723 2724#ifndef USDT2 2725#define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ 2726\ 2727JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2728 JNIWrapper("Set" XSTR(Result) "Field"); \ 2729\ 2730 FP_SELECT_##Result( \ 2731 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \ 2732 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \ 2733\ 2734 oop o = JNIHandles::resolve_non_null(obj); \ 2735 Klass* k = o->klass(); \ 2736 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2737 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2738 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2739 /* and creates a ResetNoHandleMark. */ \ 2740 if (JvmtiExport::should_post_field_modification()) { \ 2741 jvalue field_value; \ 2742 field_value.unionType = value; \ 2743 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2744 } \ 2745 o->Fieldname##_field_put(offset, value); \ 2746 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ 2747JNI_END 2748 2749DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) 2750DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) 2751DEFINE_SETFIELD(jchar, char, Char, 'C', c) 2752DEFINE_SETFIELD(jshort, short, Short, 'S', s) 2753DEFINE_SETFIELD(jint, int, Int, 'I', i) 2754DEFINE_SETFIELD(jlong, long, Long, 'J', j) 2755DEFINE_SETFIELD(jfloat, float, Float, 'F', f) 2756DEFINE_SETFIELD(jdouble, double, Double, 'D', d) 2757 2758#else /* USDT2 */ 2759 2760#define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \ 2761 , EntryProbe, ReturnProbe) \ 2762\ 2763JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2764 JNIWrapper("Set" XSTR(Result) "Field"); \ 2765\ 2766 EntryProbe; \ 2767\ 2768 oop o = JNIHandles::resolve_non_null(obj); \ 2769 Klass* k = o->klass(); \ 2770 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2771 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2772 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2773 /* and creates a ResetNoHandleMark. */ \ 2774 if (JvmtiExport::should_post_field_modification()) { \ 2775 jvalue field_value; \ 2776 field_value.unionType = value; \ 2777 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2778 } \ 2779 o->Fieldname##_field_put(offset, value); \ 2780 ReturnProbe; \ 2781JNI_END 2782 2783DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z 2784 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2785 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 2786DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b 2787 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2788 HOTSPOT_JNI_SETBYTEFIELD_RETURN()) 2789DEFINE_SETFIELD(jchar, char, Char, 'C', c 2790 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2791 HOTSPOT_JNI_SETCHARFIELD_RETURN()) 2792DEFINE_SETFIELD(jshort, short, Short, 'S', s 2793 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2794 HOTSPOT_JNI_SETSHORTFIELD_RETURN()) 2795DEFINE_SETFIELD(jint, int, Int, 'I', i 2796 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2797 HOTSPOT_JNI_SETINTFIELD_RETURN()) 2798DEFINE_SETFIELD(jlong, long, Long, 'J', j 2799 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2800 HOTSPOT_JNI_SETLONGFIELD_RETURN()) 2801// Float and double probes don't return value because dtrace doesn't currently support it 2802DEFINE_SETFIELD(jfloat, float, Float, 'F', f 2803 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2804 HOTSPOT_JNI_SETFLOATFIELD_RETURN()) 2805DEFINE_SETFIELD(jdouble, double, Double, 'D', d 2806 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2807 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN()) 2808#endif /* USDT2 */ 2809 2810#ifndef USDT2 2811DT_RETURN_MARK_DECL(ToReflectedField, jobject); 2812#else /* USDT2 */ 2813DT_RETURN_MARK_DECL(ToReflectedField, jobject 2814 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref)); 2815#endif /* USDT2 */ 2816 2817JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) 2818 JNIWrapper("ToReflectedField"); 2819#ifndef USDT2 2820 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, 2821 env, cls, fieldID, isStatic); 2822#else /* USDT2 */ 2823 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(env, cls, (uintptr_t) fieldID, isStatic); 2824#endif /* USDT2 */ 2825 jobject ret = NULL; 2826 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); 2827 2828 fieldDescriptor fd; 2829 bool found = false; 2830 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); 2831 2832 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); 2833 2834 if (isStatic) { 2835 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*. 2836 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2837 assert(id->is_static_field_id(), "invalid static field id"); 2838 found = id->find_local_field(&fd); 2839 } else { 2840 // Non-static field. The fieldID is really the offset of the field within the instanceOop. 2841 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2842 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); 2843 } 2844 assert(found, "bad fieldID passed into jni_ToReflectedField"); 2845 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); 2846 ret = JNIHandles::make_local(env, reflected); 2847 return ret; 2848JNI_END 2849 2850 2851// 2852// Accessing Static Fields 2853// 2854#ifndef USDT2 2855DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); 2856#else /* USDT2 */ 2857DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID 2858 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref)); 2859#endif /* USDT2 */ 2860 2861JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, 2862 const char *name, const char *sig)) 2863 JNIWrapper("GetStaticFieldID"); 2864#ifndef USDT2 2865 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); 2866#else /* USDT2 */ 2867 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig); 2868#endif /* USDT2 */ 2869 jfieldID ret = NULL; 2870 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); 2871 2872 // The class should have been loaded (we have an instance of the class 2873 // passed in) so the field and signature should already be in the symbol 2874 // table. If they're not there, the field doesn't exist. 2875 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2876 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2877 if (fieldname == NULL || signame == NULL) { 2878 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2879 } 2880 KlassHandle k(THREAD, 2881 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2882 // Make sure class is initialized before handing id's out to static fields 2883 k()->initialize(CHECK_NULL); 2884 2885 fieldDescriptor fd; 2886 if (!k()->oop_is_instance() || 2887 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) { 2888 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2889 } 2890 2891 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 2892 JNIid* id = fd.field_holder()->jni_id_for(fd.offset()); 2893 debug_only(id->set_is_static_field_id();) 2894 2895 debug_only(id->verify(fd.field_holder())); 2896 2897 ret = jfieldIDWorkaround::to_static_jfieldID(id); 2898 return ret; 2899JNI_END 2900 2901 2902JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) 2903 JNIWrapper("GetStaticObjectField"); 2904#ifndef USDT2 2905 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); 2906#else /* USDT2 */ 2907 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID); 2908#endif /* USDT2 */ 2909#if INCLUDE_JNI_CHECK 2910 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);) 2911#endif // INCLUDE_JNI_CHECK 2912 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2913 assert(id->is_static_field_id(), "invalid static field id"); 2914 // Keep JVMTI addition small and only check enabled flag here. 2915 // jni_GetField_probe() assumes that is okay to create handles. 2916 if (JvmtiExport::should_post_field_access()) { 2917 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); 2918 } 2919 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset())); 2920#ifndef USDT2 2921 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); 2922#else /* USDT2 */ 2923 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(ret); 2924#endif /* USDT2 */ 2925 return ret; 2926JNI_END 2927 2928#ifndef USDT2 2929#define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ 2930\ 2931 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ 2932\ 2933JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 2934 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 2935 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ 2936 Return ret = 0;\ 2937 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 2938 (const Return&)ret);\ 2939 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 2940 assert(id->is_static_field_id(), "invalid static field id"); \ 2941 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2942 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 2943 if (JvmtiExport::should_post_field_access()) { \ 2944 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 2945 } \ 2946 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 2947 return ret;\ 2948JNI_END 2949 2950DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) 2951DEFINE_GETSTATICFIELD(jbyte, byte, Byte) 2952DEFINE_GETSTATICFIELD(jchar, char, Char) 2953DEFINE_GETSTATICFIELD(jshort, short, Short) 2954DEFINE_GETSTATICFIELD(jint, int, Int) 2955DEFINE_GETSTATICFIELD(jlong, long, Long) 2956DEFINE_GETSTATICFIELD(jfloat, float, Float) 2957DEFINE_GETSTATICFIELD(jdouble, double, Double) 2958 2959#else /* USDT2 */ 2960 2961#define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \ 2962 , EntryProbe, ReturnProbe) \ 2963\ 2964 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \ 2965 , ReturnProbe); \ 2966\ 2967JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 2968 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 2969 EntryProbe; \ 2970 Return ret = 0;\ 2971 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 2972 (const Return&)ret);\ 2973 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 2974 assert(id->is_static_field_id(), "invalid static field id"); \ 2975 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2976 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 2977 if (JvmtiExport::should_post_field_access()) { \ 2978 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 2979 } \ 2980 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 2981 return ret;\ 2982JNI_END 2983 2984DEFINE_GETSTATICFIELD(jboolean, bool, Boolean 2985 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref)) 2986DEFINE_GETSTATICFIELD(jbyte, byte, Byte 2987 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) ) 2988DEFINE_GETSTATICFIELD(jchar, char, Char 2989 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) ) 2990DEFINE_GETSTATICFIELD(jshort, short, Short 2991 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) ) 2992DEFINE_GETSTATICFIELD(jint, int, Int 2993 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) ) 2994DEFINE_GETSTATICFIELD(jlong, long, Long 2995 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) ) 2996// Float and double probes don't return value because dtrace doesn't currently support it 2997DEFINE_GETSTATICFIELD(jfloat, float, Float 2998 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() ) 2999DEFINE_GETSTATICFIELD(jdouble, double, Double 3000 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() ) 3001#endif /* USDT2 */ 3002 3003JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) 3004 JNIWrapper("SetStaticObjectField"); 3005#ifndef USDT2 3006 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); 3007#else /* USDT2 */ 3008 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value); 3009#endif /* USDT2 */ 3010 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3011 assert(id->is_static_field_id(), "invalid static field id"); 3012 // Keep JVMTI addition small and only check enabled flag here. 3013 // jni_SetField_probe() assumes that is okay to create handles. 3014 if (JvmtiExport::should_post_field_modification()) { 3015 jvalue field_value; 3016 field_value.l = value; 3017 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); 3018 } 3019 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value)); 3020#ifndef USDT2 3021 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); 3022#else /* USDT2 */ 3023 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(); 3024#endif /* USDT2 */ 3025JNI_END 3026 3027 3028#ifndef USDT2 3029#define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ 3030\ 3031JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3032 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3033 FP_SELECT_##Result( \ 3034 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \ 3035 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \ 3036\ 3037 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3038 assert(id->is_static_field_id(), "invalid static field id"); \ 3039 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3040 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3041 if (JvmtiExport::should_post_field_modification()) { \ 3042 jvalue field_value; \ 3043 field_value.unionType = value; \ 3044 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3045 } \ 3046 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3047 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\ 3048JNI_END 3049 3050DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z) 3051DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b) 3052DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c) 3053DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s) 3054DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i) 3055DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j) 3056DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f) 3057DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d) 3058 3059#else /* USDT2 */ 3060 3061#define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \ 3062 , EntryProbe, ReturnProbe) \ 3063\ 3064JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3065 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3066 EntryProbe; \ 3067\ 3068 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3069 assert(id->is_static_field_id(), "invalid static field id"); \ 3070 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3071 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3072 if (JvmtiExport::should_post_field_modification()) { \ 3073 jvalue field_value; \ 3074 field_value.unionType = value; \ 3075 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3076 } \ 3077 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3078 ReturnProbe;\ 3079JNI_END 3080 3081DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z 3082 , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value), 3083 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 3084DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b 3085 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3086 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN()) 3087DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c 3088 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3089 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN()) 3090DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s 3091 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3092 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN()) 3093DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i 3094 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3095 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN()) 3096DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j 3097 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3098 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN()) 3099// Float and double probes don't return value because dtrace doesn't currently support it 3100DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f 3101 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3102 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN()) 3103DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d 3104 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3105 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN()) 3106#endif /* USDT2 */ 3107 3108// 3109// String Operations 3110// 3111 3112// Unicode Interface 3113 3114#ifndef USDT2 3115DT_RETURN_MARK_DECL(NewString, jstring); 3116#else /* USDT2 */ 3117DT_RETURN_MARK_DECL(NewString, jstring 3118 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref)); 3119#endif /* USDT2 */ 3120 3121JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len)) 3122 JNIWrapper("NewString"); 3123#ifndef USDT2 3124 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len); 3125#else /* USDT2 */ 3126 HOTSPOT_JNI_NEWSTRING_ENTRY(env, (uint16_t *) unicodeChars, len); 3127#endif /* USDT2 */ 3128 jstring ret = NULL; 3129 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret); 3130 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL); 3131 ret = (jstring) JNIHandles::make_local(env, string); 3132 return ret; 3133JNI_END 3134 3135 3136JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string)) 3137 JNIWrapper("GetStringLength"); 3138#ifndef USDT2 3139 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string); 3140#else /* USDT2 */ 3141 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(env, string); 3142#endif /* USDT2 */ 3143 jsize ret = 0; 3144 oop s = JNIHandles::resolve_non_null(string); 3145 if (java_lang_String::value(s) != NULL) { 3146 ret = java_lang_String::length(s); 3147 } 3148#ifndef USDT2 3149 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret); 3150#else /* USDT2 */ 3151 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(ret); 3152#endif /* USDT2 */ 3153 return ret; 3154JNI_END 3155 3156 3157JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars( 3158 JNIEnv *env, jstring string, jboolean *isCopy)) 3159 JNIWrapper("GetStringChars"); 3160#ifndef USDT2 3161 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy); 3162#else /* USDT2 */ 3163 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(env, string, (uintptr_t *) isCopy); 3164#endif /* USDT2 */ 3165 jchar* buf = NULL; 3166 oop s = JNIHandles::resolve_non_null(string); 3167 typeArrayOop s_value = java_lang_String::value(s); 3168 if (s_value != NULL) { 3169 int s_len = java_lang_String::length(s); 3170 int s_offset = java_lang_String::offset(s); 3171 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination 3172 /* JNI Specification states return NULL on OOM */ 3173 if (buf != NULL) { 3174 if (s_len > 0) { 3175 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len); 3176 } 3177 buf[s_len] = 0; 3178 //%note jni_5 3179 if (isCopy != NULL) { 3180 *isCopy = JNI_TRUE; 3181 } 3182 } 3183 } 3184#ifndef USDT2 3185 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf); 3186#else /* USDT2 */ 3187 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(buf); 3188#endif /* USDT2 */ 3189 return buf; 3190JNI_END 3191 3192 3193JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)) 3194 JNIWrapper("ReleaseStringChars"); 3195#ifndef USDT2 3196 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars); 3197#else /* USDT2 */ 3198 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(env, str, (uint16_t *) chars); 3199#endif /* USDT2 */ 3200 //%note jni_6 3201 if (chars != NULL) { 3202 // Since String objects are supposed to be immutable, don't copy any 3203 // new data back. A bad user will have to go after the char array. 3204 FreeHeap((void*) chars); 3205 } 3206#ifndef USDT2 3207 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return); 3208#else /* USDT2 */ 3209 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(); 3210#endif /* USDT2 */ 3211JNI_END 3212 3213 3214// UTF Interface 3215 3216#ifndef USDT2 3217DT_RETURN_MARK_DECL(NewStringUTF, jstring); 3218#else /* USDT2 */ 3219DT_RETURN_MARK_DECL(NewStringUTF, jstring 3220 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref)); 3221#endif /* USDT2 */ 3222 3223JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes)) 3224 JNIWrapper("NewStringUTF"); 3225#ifndef USDT2 3226 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes); 3227#else /* USDT2 */ 3228 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(env, (char *) bytes); 3229#endif /* USDT2 */ 3230 jstring ret; 3231 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret); 3232 3233 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL); 3234 ret = (jstring) JNIHandles::make_local(env, result); 3235 return ret; 3236JNI_END 3237 3238 3239JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string)) 3240 JNIWrapper("GetStringUTFLength"); 3241#ifndef USDT2 3242 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string); 3243#else /* USDT2 */ 3244 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(env, string); 3245#endif /* USDT2 */ 3246 jsize ret = 0; 3247 oop java_string = JNIHandles::resolve_non_null(string); 3248 if (java_lang_String::value(java_string) != NULL) { 3249 ret = java_lang_String::utf8_length(java_string); 3250 } 3251#ifndef USDT2 3252 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret); 3253#else /* USDT2 */ 3254 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(ret); 3255#endif /* USDT2 */ 3256 return ret; 3257JNI_END 3258 3259 3260JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)) 3261 JNIWrapper("GetStringUTFChars"); 3262#ifndef USDT2 3263 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy); 3264#else /* USDT2 */ 3265 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(env, string, (uintptr_t *) isCopy); 3266#endif /* USDT2 */ 3267 char* result = NULL; 3268 oop java_string = JNIHandles::resolve_non_null(string); 3269 if (java_lang_String::value(java_string) != NULL) { 3270 size_t length = java_lang_String::utf8_length(java_string); 3271 /* JNI Specification states return NULL on OOM */ 3272 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL); 3273 if (result != NULL) { 3274 java_lang_String::as_utf8_string(java_string, result, (int) length + 1); 3275 if (isCopy != NULL) { 3276 *isCopy = JNI_TRUE; 3277 } 3278 } 3279 } 3280#ifndef USDT2 3281 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result); 3282#else /* USDT2 */ 3283 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(result); 3284#endif /* USDT2 */ 3285 return result; 3286JNI_END 3287 3288 3289JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars)) 3290 JNIWrapper("ReleaseStringUTFChars"); 3291#ifndef USDT2 3292 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars); 3293#else /* USDT2 */ 3294 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(env, str, (char *) chars); 3295#endif /* USDT2 */ 3296 if (chars != NULL) { 3297 FreeHeap((char*) chars); 3298 } 3299#ifndef USDT2 3300 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return); 3301#else /* USDT2 */ 3302HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(); 3303#endif /* USDT2 */ 3304JNI_END 3305 3306 3307JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array)) 3308 JNIWrapper("GetArrayLength"); 3309#ifndef USDT2 3310 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array); 3311#else /* USDT2 */ 3312 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(env, array); 3313#endif /* USDT2 */ 3314 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array)); 3315 assert(a->is_array(), "must be array"); 3316 jsize ret = a->length(); 3317#ifndef USDT2 3318 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret); 3319#else /* USDT2 */ 3320 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(ret); 3321#endif /* USDT2 */ 3322 return ret; 3323JNI_END 3324 3325 3326// 3327// Object Array Operations 3328// 3329 3330#ifndef USDT2 3331DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray); 3332#else /* USDT2 */ 3333DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray 3334 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref)); 3335#endif /* USDT2 */ 3336 3337JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement)) 3338 JNIWrapper("NewObjectArray"); 3339#ifndef USDT2 3340 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement); 3341#else /* USDT2 */ 3342 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(env, length, elementClass, initialElement); 3343#endif /* USDT2 */ 3344 jobjectArray ret = NULL; 3345 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret); 3346 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass))); 3347 Klass* ako = ek()->array_klass(CHECK_NULL); 3348 KlassHandle ak = KlassHandle(THREAD, ako); 3349 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL); 3350 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL); 3351 oop initial_value = JNIHandles::resolve(initialElement); 3352 if (initial_value != NULL) { // array already initialized with NULL 3353 for (int index = 0; index < length; index++) { 3354 result->obj_at_put(index, initial_value); 3355 } 3356 } 3357 ret = (jobjectArray) JNIHandles::make_local(env, result); 3358 return ret; 3359JNI_END 3360 3361#ifndef USDT2 3362DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject); 3363#else /* USDT2 */ 3364DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject 3365 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref)); 3366#endif /* USDT2 */ 3367 3368JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index)) 3369 JNIWrapper("GetObjectArrayElement"); 3370#ifndef USDT2 3371 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index); 3372#else /* USDT2 */ 3373 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(env, array, index); 3374#endif /* USDT2 */ 3375 jobject ret = NULL; 3376 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret); 3377 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3378 if (a->is_within_bounds(index)) { 3379 ret = JNIHandles::make_local(env, a->obj_at(index)); 3380 return ret; 3381 } else { 3382 char buf[jintAsStringSize]; 3383 sprintf(buf, "%d", index); 3384 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3385 } 3386JNI_END 3387 3388#ifndef USDT2 3389DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement); 3390#else /* USDT2 */ 3391DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement 3392 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN()); 3393#endif /* USDT2 */ 3394 3395JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value)) 3396 JNIWrapper("SetObjectArrayElement"); 3397#ifndef USDT2 3398 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value); 3399#else /* USDT2 */ 3400 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(env, array, index, value); 3401#endif /* USDT2 */ 3402 DT_VOID_RETURN_MARK(SetObjectArrayElement); 3403 3404 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3405 oop v = JNIHandles::resolve(value); 3406 if (a->is_within_bounds(index)) { 3407 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) { 3408 a->obj_at_put(index, v); 3409 } else { 3410 THROW(vmSymbols::java_lang_ArrayStoreException()); 3411 } 3412 } else { 3413 char buf[jintAsStringSize]; 3414 sprintf(buf, "%d", index); 3415 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3416 } 3417JNI_END 3418 3419 3420#ifndef USDT2 3421#define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \ 3422\ 3423 DT_RETURN_MARK_DECL(New##Result##Array, Return); \ 3424\ 3425JNI_ENTRY(Return, \ 3426 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3427 JNIWrapper("New" XSTR(Result) "Array"); \ 3428 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\ 3429 Return ret = NULL;\ 3430 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3431\ 3432 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3433 ret = (Return) JNIHandles::make_local(env, obj); \ 3434 return ret;\ 3435JNI_END 3436 3437DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean) 3438DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte) 3439DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short) 3440DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char) 3441DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int) 3442DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long) 3443DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float) 3444DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double) 3445 3446#else /* USDT2 */ 3447 3448#define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \ 3449 ,EntryProbe,ReturnProbe) \ 3450\ 3451 DT_RETURN_MARK_DECL(New##Result##Array, Return \ 3452 , ReturnProbe); \ 3453\ 3454JNI_ENTRY(Return, \ 3455 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3456 JNIWrapper("New" XSTR(Result) "Array"); \ 3457 EntryProbe; \ 3458 Return ret = NULL;\ 3459 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3460\ 3461 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3462 ret = (Return) JNIHandles::make_local(env, obj); \ 3463 return ret;\ 3464JNI_END 3465 3466DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean, 3467 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len), 3468 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref)) 3469DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte, 3470 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len), 3471 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref)) 3472DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short, 3473 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len), 3474 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref)) 3475DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char, 3476 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len), 3477 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref)) 3478DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int, 3479 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len), 3480 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref)) 3481DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long, 3482 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len), 3483 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref)) 3484DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float, 3485 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len), 3486 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref)) 3487DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double, 3488 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len), 3489 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref)) 3490#endif /* USDT2 */ 3491 3492// Return an address which will fault if the caller writes to it. 3493 3494static char* get_bad_address() { 3495 static char* bad_address = NULL; 3496 if (bad_address == NULL) { 3497 size_t size = os::vm_allocation_granularity(); 3498 bad_address = os::reserve_memory(size); 3499 if (bad_address != NULL) { 3500 os::protect_memory(bad_address, size, os::MEM_PROT_READ, 3501 /*is_committed*/false); 3502 } 3503 } 3504 return bad_address; 3505} 3506 3507 3508#ifndef USDT2 3509#define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \ 3510\ 3511JNI_QUICK_ENTRY(ElementType*, \ 3512 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3513 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3514 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\ 3515 /* allocate an chunk of memory in c land */ \ 3516 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3517 ElementType* result; \ 3518 int len = a->length(); \ 3519 if (len == 0) { \ 3520 /* Empty array: legal but useless, can't return NULL. \ 3521 * Return a pointer to something useless. \ 3522 * Avoid asserts in typeArrayOop. */ \ 3523 result = (ElementType*)get_bad_address(); \ 3524 } else { \ 3525 /* JNI Specification states return NULL on OOM */ \ 3526 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \ 3527 if (result != NULL) { \ 3528 /* copy the array to the c chunk */ \ 3529 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3530 if (isCopy) { \ 3531 *isCopy = JNI_TRUE; \ 3532 } \ 3533 } \ 3534 } \ 3535 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\ 3536 return result; \ 3537JNI_END 3538 3539DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3540DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3541DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3542DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3543DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int) 3544DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3545DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3546DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3547 3548#else /* USDT2 */ 3549 3550#define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \ 3551 , EntryProbe, ReturnProbe) \ 3552\ 3553JNI_QUICK_ENTRY(ElementType*, \ 3554 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3555 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3556 EntryProbe; \ 3557 /* allocate an chunk of memory in c land */ \ 3558 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3559 ElementType* result; \ 3560 int len = a->length(); \ 3561 if (len == 0) { \ 3562 /* Empty array: legal but useless, can't return NULL. \ 3563 * Return a pointer to something useless. \ 3564 * Avoid asserts in typeArrayOop. */ \ 3565 result = (ElementType*)get_bad_address(); \ 3566 } else { \ 3567 /* JNI Specification states return NULL on OOM */ \ 3568 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \ 3569 if (result != NULL) { \ 3570 /* copy the array to the c chunk */ \ 3571 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3572 if (isCopy) { \ 3573 *isCopy = JNI_TRUE; \ 3574 } \ 3575 } \ 3576 } \ 3577 ReturnProbe; \ 3578 return result; \ 3579JNI_END 3580 3581DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3582 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3583 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result)) 3584DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3585 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3586 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result)) 3587DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3588 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3589 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result)) 3590DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3591 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3592 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result)) 3593DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int 3594 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3595 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result)) 3596DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3597 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3598 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result))) 3599// Float and double probes don't return value because dtrace doesn't currently support it 3600DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3601 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3602 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result)) 3603DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3604 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3605 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result)) 3606#endif /* USDT2 */ 3607 3608#ifndef USDT2 3609#define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \ 3610\ 3611JNI_QUICK_ENTRY(void, \ 3612 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3613 ElementType *buf, jint mode)) \ 3614 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3615 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\ 3616 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3617 int len = a->length(); \ 3618 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3619 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3620 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3621 } \ 3622 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3623 FreeHeap(buf); \ 3624 } \ 3625 } \ 3626 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\ 3627JNI_END 3628 3629DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3630DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3631DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3632DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3633DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int) 3634DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3635DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3636DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3637 3638#else /* USDT2 */ 3639 3640#define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \ 3641 , EntryProbe, ReturnProbe);\ 3642\ 3643JNI_QUICK_ENTRY(void, \ 3644 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3645 ElementType *buf, jint mode)) \ 3646 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3647 EntryProbe; \ 3648 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3649 int len = a->length(); \ 3650 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3651 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3652 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3653 } \ 3654 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3655 FreeHeap(buf); \ 3656 } \ 3657 } \ 3658 ReturnProbe; \ 3659JNI_END 3660 3661DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3662 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3663 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN()) 3664DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3665 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode), 3666 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN()) 3667DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3668 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3669 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN()) 3670DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3671 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3672 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN()) 3673DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int 3674 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode), 3675 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN()) 3676DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3677 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3678 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN()) 3679DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3680 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode), 3681 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN()) 3682DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3683 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode), 3684 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN()) 3685#endif /* USDT2 */ 3686 3687#ifndef USDT2 3688#define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3689 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\ 3690\ 3691JNI_ENTRY(void, \ 3692jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3693 jsize len, ElementType *buf)) \ 3694 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3695 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3696 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3697 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3698 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3699 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3700 } else { \ 3701 if (len > 0) { \ 3702 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3703 memcpy((u_char*) buf, \ 3704 (u_char*) src->Tag##_at_addr(start), \ 3705 len << sc); \ 3706 } \ 3707 } \ 3708JNI_END 3709 3710DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool) 3711DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3712DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3713DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3714DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int) 3715DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3716DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3717DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3718 3719#else /* USDT2 */ 3720 3721#define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3722 , EntryProbe, ReturnProbe); \ 3723 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \ 3724 , ReturnProbe); \ 3725\ 3726JNI_ENTRY(void, \ 3727jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3728 jsize len, ElementType *buf)) \ 3729 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3730 EntryProbe; \ 3731 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3732 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3733 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3734 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3735 } else { \ 3736 if (len > 0) { \ 3737 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3738 memcpy((u_char*) buf, \ 3739 (u_char*) src->Tag##_at_addr(start), \ 3740 len << sc); \ 3741 } \ 3742 } \ 3743JNI_END 3744 3745DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool 3746 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3747 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN()); 3748DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3749 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3750 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN()); 3751DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3752 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3753 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN()); 3754DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3755 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf), 3756 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN()); 3757DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int 3758 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf), 3759 HOTSPOT_JNI_GETINTARRAYREGION_RETURN()); 3760DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long 3761 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3762 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN()); 3763DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3764 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3765 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN()); 3766DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3767 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3768 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN()); 3769#endif /* USDT2 */ 3770 3771#ifndef USDT2 3772#define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3773 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\ 3774\ 3775JNI_ENTRY(void, \ 3776jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3777 jsize len, const ElementType *buf)) \ 3778 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3779 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3780 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3781 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3782 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3783 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3784 } else { \ 3785 if (len > 0) { \ 3786 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3787 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3788 (u_char*) buf, \ 3789 len << sc); \ 3790 } \ 3791 } \ 3792JNI_END 3793 3794DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool) 3795DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3796DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3797DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3798DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int) 3799DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3800DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3801DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3802 3803#else /* USDT2 */ 3804 3805#define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3806 , EntryProbe, ReturnProbe); \ 3807 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \ 3808 ,ReturnProbe); \ 3809\ 3810JNI_ENTRY(void, \ 3811jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3812 jsize len, const ElementType *buf)) \ 3813 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3814 EntryProbe; \ 3815 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3816 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3817 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3818 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3819 } else { \ 3820 if (len > 0) { \ 3821 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3822 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3823 (u_char*) buf, \ 3824 len << sc); \ 3825 } \ 3826 } \ 3827JNI_END 3828 3829DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool 3830 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf), 3831 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN()) 3832DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3833 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3834 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN()) 3835DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3836 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3837 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN()) 3838DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3839 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3840 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN()) 3841DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int 3842 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf), 3843 HOTSPOT_JNI_SETINTARRAYREGION_RETURN()) 3844DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long 3845 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3846 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN()) 3847DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3848 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3849 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN()) 3850DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3851 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3852 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN()) 3853#endif /* USDT2 */ 3854 3855 3856// 3857// Interception of natives 3858// 3859 3860// The RegisterNatives call being attempted tried to register with a method that 3861// is not native. Ask JVM TI what prefixes have been specified. Then check 3862// to see if the native method is now wrapped with the prefixes. See the 3863// SetNativeMethodPrefix(es) functions in the JVM TI Spec for details. 3864static Method* find_prefixed_native(KlassHandle k, 3865 Symbol* name, Symbol* signature, TRAPS) { 3866#if INCLUDE_JVMTI 3867 ResourceMark rm(THREAD); 3868 Method* method; 3869 int name_len = name->utf8_length(); 3870 char* name_str = name->as_utf8(); 3871 int prefix_count; 3872 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); 3873 for (int i = 0; i < prefix_count; i++) { 3874 char* prefix = prefixes[i]; 3875 int prefix_len = (int)strlen(prefix); 3876 3877 // try adding this prefix to the method name and see if it matches another method name 3878 int trial_len = name_len + prefix_len; 3879 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1); 3880 strcpy(trial_name_str, prefix); 3881 strcat(trial_name_str, name_str); 3882 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len); 3883 if (trial_name == NULL) { 3884 continue; // no such symbol, so this prefix wasn't used, try the next prefix 3885 } 3886 method = k()->lookup_method(trial_name, signature); 3887 if (method == NULL) { 3888 continue; // signature doesn't match, try the next prefix 3889 } 3890 if (method->is_native()) { 3891 method->set_is_prefixed_native(); 3892 return method; // wahoo, we found a prefixed version of the method, return it 3893 } 3894 // found as non-native, so prefix is good, add it, probably just need more prefixes 3895 name_len = trial_len; 3896 name_str = trial_name_str; 3897 } 3898#endif // INCLUDE_JVMTI 3899 return NULL; // not found 3900} 3901 3902static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) { 3903 Method* method = k()->lookup_method(name, signature); 3904 if (method == NULL) { 3905 ResourceMark rm; 3906 stringStream st; 3907 st.print("Method %s name or signature does not match", 3908 Method::name_and_sig_as_C_string(k(), name, signature)); 3909 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3910 } 3911 if (!method->is_native()) { 3912 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es) 3913 method = find_prefixed_native(k, name, signature, THREAD); 3914 if (method == NULL) { 3915 ResourceMark rm; 3916 stringStream st; 3917 st.print("Method %s is not declared as native", 3918 Method::name_and_sig_as_C_string(k(), name, signature)); 3919 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3920 } 3921 } 3922 3923 if (entry != NULL) { 3924 method->set_native_function(entry, 3925 Method::native_bind_event_is_interesting); 3926 } else { 3927 method->clear_native_function(); 3928 } 3929 if (PrintJNIResolving) { 3930 ResourceMark rm(THREAD); 3931 tty->print_cr("[Registering JNI native method %s.%s]", 3932 method->method_holder()->external_name(), 3933 method->name()->as_C_string()); 3934 } 3935 return true; 3936} 3937 3938#ifndef USDT2 3939DT_RETURN_MARK_DECL(RegisterNatives, jint); 3940#else /* USDT2 */ 3941DT_RETURN_MARK_DECL(RegisterNatives, jint 3942 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref)); 3943#endif /* USDT2 */ 3944 3945JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz, 3946 const JNINativeMethod *methods, 3947 jint nMethods)) 3948 JNIWrapper("RegisterNatives"); 3949#ifndef USDT2 3950 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods); 3951#else /* USDT2 */ 3952 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(env, clazz, (void *) methods, nMethods); 3953#endif /* USDT2 */ 3954 jint ret = 0; 3955 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret); 3956 3957 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 3958 3959 for (int index = 0; index < nMethods; index++) { 3960 const char* meth_name = methods[index].name; 3961 const char* meth_sig = methods[index].signature; 3962 int meth_name_len = (int)strlen(meth_name); 3963 3964 // The class should have been loaded (we have an instance of the class 3965 // passed in) so the method and signature should already be in the symbol 3966 // table. If they're not there, the method doesn't exist. 3967 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len); 3968 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig)); 3969 3970 if (name == NULL || signature == NULL) { 3971 ResourceMark rm; 3972 stringStream st; 3973 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig); 3974 // Must return negative value on failure 3975 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1); 3976 } 3977 3978 bool res = register_native(h_k, name, signature, 3979 (address) methods[index].fnPtr, THREAD); 3980 if (!res) { 3981 ret = -1; 3982 break; 3983 } 3984 } 3985 return ret; 3986JNI_END 3987 3988 3989JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz)) 3990 JNIWrapper("UnregisterNatives"); 3991#ifndef USDT2 3992 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz); 3993#else /* USDT2 */ 3994 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(env, clazz); 3995#endif /* USDT2 */ 3996 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 3997 //%note jni_2 3998 if (k->oop_is_instance()) { 3999 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) { 4000 Method* m = InstanceKlass::cast(k)->methods()->at(index); 4001 if (m->is_native()) { 4002 m->clear_native_function(); 4003 m->set_signature_handler(NULL); 4004 } 4005 } 4006 } 4007#ifndef USDT2 4008 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0); 4009#else /* USDT2 */ 4010 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(0); 4011#endif /* USDT2 */ 4012 return 0; 4013JNI_END 4014 4015// 4016// Monitor functions 4017// 4018 4019#ifndef USDT2 4020DT_RETURN_MARK_DECL(MonitorEnter, jint); 4021#else /* USDT2 */ 4022DT_RETURN_MARK_DECL(MonitorEnter, jint 4023 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref)); 4024#endif /* USDT2 */ 4025 4026JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj)) 4027#ifndef USDT2 4028 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj); 4029#else /* USDT2 */ 4030 HOTSPOT_JNI_MONITORENTER_ENTRY(env, jobj); 4031#endif /* USDT2 */ 4032 jint ret = JNI_ERR; 4033 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret); 4034 4035 // If the object is null, we can't do anything with it 4036 if (jobj == NULL) { 4037 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4038 } 4039 4040 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); 4041 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR)); 4042 ret = JNI_OK; 4043 return ret; 4044JNI_END 4045 4046#ifndef USDT2 4047DT_RETURN_MARK_DECL(MonitorExit, jint); 4048#else /* USDT2 */ 4049DT_RETURN_MARK_DECL(MonitorExit, jint 4050 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref)); 4051#endif /* USDT2 */ 4052 4053JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj)) 4054#ifndef USDT2 4055 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj); 4056#else /* USDT2 */ 4057 HOTSPOT_JNI_MONITOREXIT_ENTRY(env, jobj); 4058#endif /* USDT2 */ 4059 jint ret = JNI_ERR; 4060 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret); 4061 4062 // Don't do anything with a null object 4063 if (jobj == NULL) { 4064 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4065 } 4066 4067 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); 4068 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR)); 4069 4070 ret = JNI_OK; 4071 return ret; 4072JNI_END 4073 4074// 4075// Extensions 4076// 4077 4078#ifndef USDT2 4079DT_VOID_RETURN_MARK_DECL(GetStringRegion); 4080#else /* USDT2 */ 4081DT_VOID_RETURN_MARK_DECL(GetStringRegion 4082 , HOTSPOT_JNI_GETSTRINGREGION_RETURN()); 4083#endif /* USDT2 */ 4084 4085JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf)) 4086 JNIWrapper("GetStringRegion"); 4087#ifndef USDT2 4088 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf); 4089#else /* USDT2 */ 4090 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(env, string, start, len, buf); 4091#endif /* USDT2 */ 4092 DT_VOID_RETURN_MARK(GetStringRegion); 4093 oop s = JNIHandles::resolve_non_null(string); 4094 int s_len = java_lang_String::length(s); 4095 if (start < 0 || len < 0 || start + len > s_len) { 4096 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4097 } else { 4098 if (len > 0) { 4099 int s_offset = java_lang_String::offset(s); 4100 typeArrayOop s_value = java_lang_String::value(s); 4101 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len); 4102 } 4103 } 4104JNI_END 4105 4106#ifndef USDT2 4107DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion); 4108#else /* USDT2 */ 4109DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion 4110 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN()); 4111#endif /* USDT2 */ 4112 4113JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf)) 4114 JNIWrapper("GetStringUTFRegion"); 4115#ifndef USDT2 4116 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf); 4117#else /* USDT2 */ 4118 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(env, string, start, len, buf); 4119#endif /* USDT2 */ 4120 DT_VOID_RETURN_MARK(GetStringUTFRegion); 4121 oop s = JNIHandles::resolve_non_null(string); 4122 int s_len = java_lang_String::length(s); 4123 if (start < 0 || len < 0 || start + len > s_len) { 4124 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4125 } else { 4126 //%note jni_7 4127 if (len > 0) { 4128 ResourceMark rm(THREAD); 4129 char *utf_region = java_lang_String::as_utf8_string(s, start, len); 4130 int utf_len = (int)strlen(utf_region); 4131 memcpy(buf, utf_region, utf_len); 4132 buf[utf_len] = 0; 4133 } else { 4134 // JDK null-terminates the buffer even in len is zero 4135 if (buf != NULL) { 4136 buf[0] = 0; 4137 } 4138 } 4139 } 4140JNI_END 4141 4142 4143JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)) 4144 JNIWrapper("GetPrimitiveArrayCritical"); 4145#ifndef USDT2 4146 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy); 4147#else /* USDT2 */ 4148 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(env, array, (uintptr_t *) isCopy); 4149#endif /* USDT2 */ 4150 GC_locker::lock_critical(thread); 4151 if (isCopy != NULL) { 4152 *isCopy = JNI_FALSE; 4153 } 4154 oop a = JNIHandles::resolve_non_null(array); 4155 assert(a->is_array(), "just checking"); 4156 BasicType type; 4157 if (a->is_objArray()) { 4158 type = T_OBJECT; 4159 } else { 4160 type = TypeArrayKlass::cast(a->klass())->element_type(); 4161 } 4162 void* ret = arrayOop(a)->base(type); 4163#ifndef USDT2 4164 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret); 4165#else /* USDT2 */ 4166 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(ret); 4167#endif /* USDT2 */ 4168 return ret; 4169JNI_END 4170 4171 4172JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)) 4173 JNIWrapper("ReleasePrimitiveArrayCritical"); 4174#ifndef USDT2 4175 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode); 4176#else /* USDT2 */ 4177 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(env, array, carray, mode); 4178#endif /* USDT2 */ 4179 // The array, carray and mode arguments are ignored 4180 GC_locker::unlock_critical(thread); 4181#ifndef USDT2 4182 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return); 4183#else /* USDT2 */ 4184HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(); 4185#endif /* USDT2 */ 4186JNI_END 4187 4188 4189JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy)) 4190 JNIWrapper("GetStringCritical"); 4191#ifndef USDT2 4192 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy); 4193#else /* USDT2 */ 4194 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(env, string, (uintptr_t *) isCopy); 4195#endif /* USDT2 */ 4196 GC_locker::lock_critical(thread); 4197 if (isCopy != NULL) { 4198 *isCopy = JNI_FALSE; 4199 } 4200 oop s = JNIHandles::resolve_non_null(string); 4201 int s_len = java_lang_String::length(s); 4202 typeArrayOop s_value = java_lang_String::value(s); 4203 int s_offset = java_lang_String::offset(s); 4204 const jchar* ret; 4205 if (s_len > 0) { 4206 ret = s_value->char_at_addr(s_offset); 4207 } else { 4208 ret = (jchar*) s_value->base(T_CHAR); 4209 } 4210#ifndef USDT2 4211 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret); 4212#else /* USDT2 */ 4213 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN((uint16_t *) ret); 4214#endif /* USDT2 */ 4215 return ret; 4216JNI_END 4217 4218 4219JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars)) 4220 JNIWrapper("ReleaseStringCritical"); 4221#ifndef USDT2 4222 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars); 4223#else /* USDT2 */ 4224 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(env, str, (uint16_t *) chars); 4225#endif /* USDT2 */ 4226 // The str and chars arguments are ignored 4227 GC_locker::unlock_critical(thread); 4228#ifndef USDT2 4229 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return); 4230#else /* USDT2 */ 4231HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(); 4232#endif /* USDT2 */ 4233JNI_END 4234 4235 4236JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref)) 4237 JNIWrapper("jni_NewWeakGlobalRef"); 4238#ifndef USDT2 4239 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref); 4240#else /* USDT2 */ 4241 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(env, ref); 4242#endif /* USDT2 */ 4243 Handle ref_handle(thread, JNIHandles::resolve(ref)); 4244 jweak ret = JNIHandles::make_weak_global(ref_handle); 4245#ifndef USDT2 4246 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret); 4247#else /* USDT2 */ 4248 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(ret); 4249#endif /* USDT2 */ 4250 return ret; 4251JNI_END 4252 4253// Must be JNI_ENTRY (with HandleMark) 4254JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref)) 4255 JNIWrapper("jni_DeleteWeakGlobalRef"); 4256#ifndef USDT2 4257 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref); 4258#else /* USDT2 */ 4259 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(env, ref); 4260#endif /* USDT2 */ 4261 JNIHandles::destroy_weak_global(ref); 4262#ifndef USDT2 4263 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return); 4264#else /* USDT2 */ 4265 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(); 4266#endif /* USDT2 */ 4267JNI_END 4268 4269 4270JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env)) 4271 JNIWrapper("jni_ExceptionCheck"); 4272#ifndef USDT2 4273 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env); 4274#else /* USDT2 */ 4275 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(env); 4276#endif /* USDT2 */ 4277 jni_check_async_exceptions(thread); 4278 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE; 4279#ifndef USDT2 4280 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret); 4281#else /* USDT2 */ 4282 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(ret); 4283#endif /* USDT2 */ 4284 return ret; 4285JNI_END 4286 4287 4288// Initialization state for three routines below relating to 4289// java.nio.DirectBuffers 4290static jint directBufferSupportInitializeStarted = 0; 4291static volatile jint directBufferSupportInitializeEnded = 0; 4292static volatile jint directBufferSupportInitializeFailed = 0; 4293static jclass bufferClass = NULL; 4294static jclass directBufferClass = NULL; 4295static jclass directByteBufferClass = NULL; 4296static jmethodID directByteBufferConstructor = NULL; 4297static jfieldID directBufferAddressField = NULL; 4298static jfieldID bufferCapacityField = NULL; 4299 4300static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) { 4301 Handle loader; // null (bootstrap) loader 4302 Handle protection_domain; // null protection domain 4303 4304 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 4305 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL); 4306 4307 if (TraceClassResolution && result != NULL) { 4308 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 4309 } 4310 return result; 4311} 4312 4313// These lookups are done with the NULL (bootstrap) ClassLoader to 4314// circumvent any security checks that would be done by jni_FindClass. 4315JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env)) 4316{ 4317 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; } 4318 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; } 4319 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; } 4320 return true; 4321} 4322JNI_END 4323 4324 4325static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) { 4326 if (directBufferSupportInitializeFailed) { 4327 return false; 4328 } 4329 4330 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) { 4331 if (!lookupDirectBufferClasses(env)) { 4332 directBufferSupportInitializeFailed = 1; 4333 return false; 4334 } 4335 4336 // Make global references for these 4337 bufferClass = (jclass) env->NewGlobalRef(bufferClass); 4338 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass); 4339 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass); 4340 4341 // Get needed field and method IDs 4342 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V"); 4343 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J"); 4344 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I"); 4345 4346 if ((directByteBufferConstructor == NULL) || 4347 (directBufferAddressField == NULL) || 4348 (bufferCapacityField == NULL)) { 4349 directBufferSupportInitializeFailed = 1; 4350 return false; 4351 } 4352 4353 directBufferSupportInitializeEnded = 1; 4354 } else { 4355 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) { 4356 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls 4357 // os::sleep which requires the VM state transition. On other platforms, it 4358 // is not necessary. The following call to change the VM state is purposely 4359 // put inside the loop to avoid potential deadlock when multiple threads 4360 // try to call this method. See 6791815 for more details. 4361 ThreadInVMfromNative tivn(thread); 4362 os::yield_all(); 4363 } 4364 } 4365 4366 return !directBufferSupportInitializeFailed; 4367} 4368 4369extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity) 4370{ 4371 // thread_from_jni_environment() will block if VM is gone. 4372 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4373 4374 JNIWrapper("jni_NewDirectByteBuffer"); 4375#ifndef USDT2 4376 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity); 4377#else /* USDT2 */ 4378 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(env, address, capacity); 4379#endif /* USDT2 */ 4380 4381 if (!directBufferSupportInitializeEnded) { 4382 if (!initializeDirectBufferSupport(env, thread)) { 4383#ifndef USDT2 4384 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL); 4385#else /* USDT2 */ 4386 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(NULL); 4387#endif /* USDT2 */ 4388 return NULL; 4389 } 4390 } 4391 4392 // Being paranoid about accidental sign extension on address 4393 jlong addr = (jlong) ((uintptr_t) address); 4394 // NOTE that package-private DirectByteBuffer constructor currently 4395 // takes int capacity 4396 jint cap = (jint) capacity; 4397 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap); 4398#ifndef USDT2 4399 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret); 4400#else /* USDT2 */ 4401 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(ret); 4402#endif /* USDT2 */ 4403 return ret; 4404} 4405 4406#ifndef USDT2 4407DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*); 4408#else /* USDT2 */ 4409DT_RETURN_MARK_DECL(GetDirectBufferAddress, void* 4410 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref)); 4411#endif /* USDT2 */ 4412 4413extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf) 4414{ 4415 // thread_from_jni_environment() will block if VM is gone. 4416 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4417 4418 JNIWrapper("jni_GetDirectBufferAddress"); 4419#ifndef USDT2 4420 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf); 4421#else /* USDT2 */ 4422 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(env, buf); 4423#endif /* USDT2 */ 4424 void* ret = NULL; 4425 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret); 4426 4427 if (!directBufferSupportInitializeEnded) { 4428 if (!initializeDirectBufferSupport(env, thread)) { 4429 return 0; 4430 } 4431 } 4432 4433 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) { 4434 return 0; 4435 } 4436 4437 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField); 4438 return ret; 4439} 4440 4441#ifndef USDT2 4442DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong); 4443#else /* USDT2 */ 4444DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong 4445 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref)); 4446#endif /* USDT2 */ 4447 4448extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf) 4449{ 4450 // thread_from_jni_environment() will block if VM is gone. 4451 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4452 4453 JNIWrapper("jni_GetDirectBufferCapacity"); 4454#ifndef USDT2 4455 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf); 4456#else /* USDT2 */ 4457 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(env, buf); 4458#endif /* USDT2 */ 4459 jlong ret = -1; 4460 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret); 4461 4462 if (!directBufferSupportInitializeEnded) { 4463 if (!initializeDirectBufferSupport(env, thread)) { 4464 ret = 0; 4465 return ret; 4466 } 4467 } 4468 4469 if (buf == NULL) { 4470 return -1; 4471 } 4472 4473 if (!env->IsInstanceOf(buf, directBufferClass)) { 4474 return -1; 4475 } 4476 4477 // NOTE that capacity is currently an int in the implementation 4478 ret = env->GetIntField(buf, bufferCapacityField); 4479 return ret; 4480} 4481 4482 4483JNI_LEAF(jint, jni_GetVersion(JNIEnv *env)) 4484 JNIWrapper("GetVersion"); 4485#ifndef USDT2 4486 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env); 4487#else /* USDT2 */ 4488 HOTSPOT_JNI_GETVERSION_ENTRY(env); 4489#endif /* USDT2 */ 4490#ifndef USDT2 4491 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion); 4492#else /* USDT2 */ 4493 HOTSPOT_JNI_GETVERSION_RETURN(CurrentVersion); 4494#endif /* USDT2 */ 4495 return CurrentVersion; 4496JNI_END 4497 4498extern struct JavaVM_ main_vm; 4499 4500JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm)) 4501 JNIWrapper("jni_GetJavaVM"); 4502#ifndef USDT2 4503 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm); 4504#else /* USDT2 */ 4505 HOTSPOT_JNI_GETJAVAVM_ENTRY(env, (void **) vm); 4506#endif /* USDT2 */ 4507 *vm = (JavaVM *)(&main_vm); 4508#ifndef USDT2 4509 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK); 4510#else /* USDT2 */ 4511 HOTSPOT_JNI_GETJAVAVM_RETURN(JNI_OK); 4512#endif /* USDT2 */ 4513 return JNI_OK; 4514JNI_END 4515 4516// Structure containing all jni functions 4517struct JNINativeInterface_ jni_NativeInterface = { 4518 NULL, 4519 NULL, 4520 NULL, 4521 4522 NULL, 4523 4524 jni_GetVersion, 4525 4526 jni_DefineClass, 4527 jni_FindClass, 4528 4529 jni_FromReflectedMethod, 4530 jni_FromReflectedField, 4531 4532 jni_ToReflectedMethod, 4533 4534 jni_GetSuperclass, 4535 jni_IsAssignableFrom, 4536 4537 jni_ToReflectedField, 4538 4539 jni_Throw, 4540 jni_ThrowNew, 4541 jni_ExceptionOccurred, 4542 jni_ExceptionDescribe, 4543 jni_ExceptionClear, 4544 jni_FatalError, 4545 4546 jni_PushLocalFrame, 4547 jni_PopLocalFrame, 4548 4549 jni_NewGlobalRef, 4550 jni_DeleteGlobalRef, 4551 jni_DeleteLocalRef, 4552 jni_IsSameObject, 4553 4554 jni_NewLocalRef, 4555 jni_EnsureLocalCapacity, 4556 4557 jni_AllocObject, 4558 jni_NewObject, 4559 jni_NewObjectV, 4560 jni_NewObjectA, 4561 4562 jni_GetObjectClass, 4563 jni_IsInstanceOf, 4564 4565 jni_GetMethodID, 4566 4567 jni_CallObjectMethod, 4568 jni_CallObjectMethodV, 4569 jni_CallObjectMethodA, 4570 jni_CallBooleanMethod, 4571 jni_CallBooleanMethodV, 4572 jni_CallBooleanMethodA, 4573 jni_CallByteMethod, 4574 jni_CallByteMethodV, 4575 jni_CallByteMethodA, 4576 jni_CallCharMethod, 4577 jni_CallCharMethodV, 4578 jni_CallCharMethodA, 4579 jni_CallShortMethod, 4580 jni_CallShortMethodV, 4581 jni_CallShortMethodA, 4582 jni_CallIntMethod, 4583 jni_CallIntMethodV, 4584 jni_CallIntMethodA, 4585 jni_CallLongMethod, 4586 jni_CallLongMethodV, 4587 jni_CallLongMethodA, 4588 jni_CallFloatMethod, 4589 jni_CallFloatMethodV, 4590 jni_CallFloatMethodA, 4591 jni_CallDoubleMethod, 4592 jni_CallDoubleMethodV, 4593 jni_CallDoubleMethodA, 4594 jni_CallVoidMethod, 4595 jni_CallVoidMethodV, 4596 jni_CallVoidMethodA, 4597 4598 jni_CallNonvirtualObjectMethod, 4599 jni_CallNonvirtualObjectMethodV, 4600 jni_CallNonvirtualObjectMethodA, 4601 jni_CallNonvirtualBooleanMethod, 4602 jni_CallNonvirtualBooleanMethodV, 4603 jni_CallNonvirtualBooleanMethodA, 4604 jni_CallNonvirtualByteMethod, 4605 jni_CallNonvirtualByteMethodV, 4606 jni_CallNonvirtualByteMethodA, 4607 jni_CallNonvirtualCharMethod, 4608 jni_CallNonvirtualCharMethodV, 4609 jni_CallNonvirtualCharMethodA, 4610 jni_CallNonvirtualShortMethod, 4611 jni_CallNonvirtualShortMethodV, 4612 jni_CallNonvirtualShortMethodA, 4613 jni_CallNonvirtualIntMethod, 4614 jni_CallNonvirtualIntMethodV, 4615 jni_CallNonvirtualIntMethodA, 4616 jni_CallNonvirtualLongMethod, 4617 jni_CallNonvirtualLongMethodV, 4618 jni_CallNonvirtualLongMethodA, 4619 jni_CallNonvirtualFloatMethod, 4620 jni_CallNonvirtualFloatMethodV, 4621 jni_CallNonvirtualFloatMethodA, 4622 jni_CallNonvirtualDoubleMethod, 4623 jni_CallNonvirtualDoubleMethodV, 4624 jni_CallNonvirtualDoubleMethodA, 4625 jni_CallNonvirtualVoidMethod, 4626 jni_CallNonvirtualVoidMethodV, 4627 jni_CallNonvirtualVoidMethodA, 4628 4629 jni_GetFieldID, 4630 4631 jni_GetObjectField, 4632 jni_GetBooleanField, 4633 jni_GetByteField, 4634 jni_GetCharField, 4635 jni_GetShortField, 4636 jni_GetIntField, 4637 jni_GetLongField, 4638 jni_GetFloatField, 4639 jni_GetDoubleField, 4640 4641 jni_SetObjectField, 4642 jni_SetBooleanField, 4643 jni_SetByteField, 4644 jni_SetCharField, 4645 jni_SetShortField, 4646 jni_SetIntField, 4647 jni_SetLongField, 4648 jni_SetFloatField, 4649 jni_SetDoubleField, 4650 4651 jni_GetStaticMethodID, 4652 4653 jni_CallStaticObjectMethod, 4654 jni_CallStaticObjectMethodV, 4655 jni_CallStaticObjectMethodA, 4656 jni_CallStaticBooleanMethod, 4657 jni_CallStaticBooleanMethodV, 4658 jni_CallStaticBooleanMethodA, 4659 jni_CallStaticByteMethod, 4660 jni_CallStaticByteMethodV, 4661 jni_CallStaticByteMethodA, 4662 jni_CallStaticCharMethod, 4663 jni_CallStaticCharMethodV, 4664 jni_CallStaticCharMethodA, 4665 jni_CallStaticShortMethod, 4666 jni_CallStaticShortMethodV, 4667 jni_CallStaticShortMethodA, 4668 jni_CallStaticIntMethod, 4669 jni_CallStaticIntMethodV, 4670 jni_CallStaticIntMethodA, 4671 jni_CallStaticLongMethod, 4672 jni_CallStaticLongMethodV, 4673 jni_CallStaticLongMethodA, 4674 jni_CallStaticFloatMethod, 4675 jni_CallStaticFloatMethodV, 4676 jni_CallStaticFloatMethodA, 4677 jni_CallStaticDoubleMethod, 4678 jni_CallStaticDoubleMethodV, 4679 jni_CallStaticDoubleMethodA, 4680 jni_CallStaticVoidMethod, 4681 jni_CallStaticVoidMethodV, 4682 jni_CallStaticVoidMethodA, 4683 4684 jni_GetStaticFieldID, 4685 4686 jni_GetStaticObjectField, 4687 jni_GetStaticBooleanField, 4688 jni_GetStaticByteField, 4689 jni_GetStaticCharField, 4690 jni_GetStaticShortField, 4691 jni_GetStaticIntField, 4692 jni_GetStaticLongField, 4693 jni_GetStaticFloatField, 4694 jni_GetStaticDoubleField, 4695 4696 jni_SetStaticObjectField, 4697 jni_SetStaticBooleanField, 4698 jni_SetStaticByteField, 4699 jni_SetStaticCharField, 4700 jni_SetStaticShortField, 4701 jni_SetStaticIntField, 4702 jni_SetStaticLongField, 4703 jni_SetStaticFloatField, 4704 jni_SetStaticDoubleField, 4705 4706 jni_NewString, 4707 jni_GetStringLength, 4708 jni_GetStringChars, 4709 jni_ReleaseStringChars, 4710 4711 jni_NewStringUTF, 4712 jni_GetStringUTFLength, 4713 jni_GetStringUTFChars, 4714 jni_ReleaseStringUTFChars, 4715 4716 jni_GetArrayLength, 4717 4718 jni_NewObjectArray, 4719 jni_GetObjectArrayElement, 4720 jni_SetObjectArrayElement, 4721 4722 jni_NewBooleanArray, 4723 jni_NewByteArray, 4724 jni_NewCharArray, 4725 jni_NewShortArray, 4726 jni_NewIntArray, 4727 jni_NewLongArray, 4728 jni_NewFloatArray, 4729 jni_NewDoubleArray, 4730 4731 jni_GetBooleanArrayElements, 4732 jni_GetByteArrayElements, 4733 jni_GetCharArrayElements, 4734 jni_GetShortArrayElements, 4735 jni_GetIntArrayElements, 4736 jni_GetLongArrayElements, 4737 jni_GetFloatArrayElements, 4738 jni_GetDoubleArrayElements, 4739 4740 jni_ReleaseBooleanArrayElements, 4741 jni_ReleaseByteArrayElements, 4742 jni_ReleaseCharArrayElements, 4743 jni_ReleaseShortArrayElements, 4744 jni_ReleaseIntArrayElements, 4745 jni_ReleaseLongArrayElements, 4746 jni_ReleaseFloatArrayElements, 4747 jni_ReleaseDoubleArrayElements, 4748 4749 jni_GetBooleanArrayRegion, 4750 jni_GetByteArrayRegion, 4751 jni_GetCharArrayRegion, 4752 jni_GetShortArrayRegion, 4753 jni_GetIntArrayRegion, 4754 jni_GetLongArrayRegion, 4755 jni_GetFloatArrayRegion, 4756 jni_GetDoubleArrayRegion, 4757 4758 jni_SetBooleanArrayRegion, 4759 jni_SetByteArrayRegion, 4760 jni_SetCharArrayRegion, 4761 jni_SetShortArrayRegion, 4762 jni_SetIntArrayRegion, 4763 jni_SetLongArrayRegion, 4764 jni_SetFloatArrayRegion, 4765 jni_SetDoubleArrayRegion, 4766 4767 jni_RegisterNatives, 4768 jni_UnregisterNatives, 4769 4770 jni_MonitorEnter, 4771 jni_MonitorExit, 4772 4773 jni_GetJavaVM, 4774 4775 jni_GetStringRegion, 4776 jni_GetStringUTFRegion, 4777 4778 jni_GetPrimitiveArrayCritical, 4779 jni_ReleasePrimitiveArrayCritical, 4780 4781 jni_GetStringCritical, 4782 jni_ReleaseStringCritical, 4783 4784 jni_NewWeakGlobalRef, 4785 jni_DeleteWeakGlobalRef, 4786 4787 jni_ExceptionCheck, 4788 4789 jni_NewDirectByteBuffer, 4790 jni_GetDirectBufferAddress, 4791 jni_GetDirectBufferCapacity, 4792 4793 // New 1_6 features 4794 4795 jni_GetObjectRefType 4796}; 4797 4798 4799// For jvmti use to modify jni function table. 4800// Java threads in native contiues to run until it is transitioned 4801// to VM at safepoint. Before the transition or before it is blocked 4802// for safepoint it may access jni function table. VM could crash if 4803// any java thread access the jni function table in the middle of memcpy. 4804// To avoid this each function pointers are copied automically. 4805void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) { 4806 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); 4807 intptr_t *a = (intptr_t *) jni_functions(); 4808 intptr_t *b = (intptr_t *) new_jni_NativeInterface; 4809 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) { 4810 Atomic::store_ptr(*b++, a++); 4811 } 4812} 4813 4814void quicken_jni_functions() { 4815 // Replace Get<Primitive>Field with fast versions 4816 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access() 4817 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls 4818#if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2) 4819 // windows x86 currently needs SEH wrapper and the gain of the fast 4820 // versions currently isn't certain for server vm on uniprocessor. 4821 && os::is_MP() 4822#endif 4823 ) { 4824 address func; 4825 func = JNI_FastGetField::generate_fast_get_boolean_field(); 4826 if (func != (address)-1) { 4827 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func; 4828 } 4829 func = JNI_FastGetField::generate_fast_get_byte_field(); 4830 if (func != (address)-1) { 4831 jni_NativeInterface.GetByteField = (GetByteField_t)func; 4832 } 4833 func = JNI_FastGetField::generate_fast_get_char_field(); 4834 if (func != (address)-1) { 4835 jni_NativeInterface.GetCharField = (GetCharField_t)func; 4836 } 4837 func = JNI_FastGetField::generate_fast_get_short_field(); 4838 if (func != (address)-1) { 4839 jni_NativeInterface.GetShortField = (GetShortField_t)func; 4840 } 4841 func = JNI_FastGetField::generate_fast_get_int_field(); 4842 if (func != (address)-1) { 4843 jni_NativeInterface.GetIntField = (GetIntField_t)func; 4844 } 4845 func = JNI_FastGetField::generate_fast_get_long_field(); 4846 if (func != (address)-1) { 4847 jni_NativeInterface.GetLongField = (GetLongField_t)func; 4848 } 4849 func = JNI_FastGetField::generate_fast_get_float_field(); 4850 if (func != (address)-1) { 4851 jni_NativeInterface.GetFloatField = (GetFloatField_t)func; 4852 } 4853 func = JNI_FastGetField::generate_fast_get_double_field(); 4854 if (func != (address)-1) { 4855 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func; 4856 } 4857 } 4858} 4859 4860// Returns the function structure 4861struct JNINativeInterface_* jni_functions() { 4862#if INCLUDE_JNI_CHECK 4863 if (CheckJNICalls) return jni_functions_check(); 4864#endif // INCLUDE_JNI_CHECK 4865 return &jni_NativeInterface; 4866} 4867 4868// Returns the function structure 4869struct JNINativeInterface_* jni_functions_nocheck() { 4870 return &jni_NativeInterface; 4871} 4872 4873 4874// Invocation API 4875 4876 4877// Forward declaration 4878extern const struct JNIInvokeInterface_ jni_InvokeInterface; 4879 4880// Global invocation API vars 4881volatile jint vm_created = 0; 4882// Indicate whether it is safe to recreate VM 4883volatile jint safe_to_recreate_vm = 1; 4884struct JavaVM_ main_vm = {&jni_InvokeInterface}; 4885 4886 4887#define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */ 4888enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL }; 4889 4890#ifndef USDT2 4891HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*); 4892DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint); 4893#else /* USDT2 */ 4894DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint 4895 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref)); 4896#endif /* USDT2 */ 4897 4898_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) { 4899#ifndef USDT2 4900 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_); 4901#else /* USDT2 */ 4902 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(args_); 4903#endif /* USDT2 */ 4904 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_; 4905 jint ret = JNI_ERR; 4906 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret); 4907 4908 if (Threads::is_supported_jni_version(args->version)) { 4909 ret = JNI_OK; 4910 } 4911 // 1.1 style no longer supported in hotspot. 4912 // According the JNI spec, we should update args->version on return. 4913 // We also use the structure to communicate with launcher about default 4914 // stack size. 4915 if (args->version == JNI_VERSION_1_1) { 4916 args->version = JNI_VERSION_1_2; 4917 // javaStackSize is int in arguments structure 4918 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow"); 4919 args->javaStackSize = (jint)(ThreadStackSize * K); 4920 } 4921 return ret; 4922} 4923 4924#ifndef PRODUCT 4925 4926#include "gc_implementation/shared/gcTimer.hpp" 4927#include "gc_interface/collectedHeap.hpp" 4928#if INCLUDE_ALL_GCS 4929#include "gc_implementation/g1/heapRegionRemSet.hpp" 4930#endif 4931#include "utilities/quickSort.hpp" 4932#include "utilities/ostream.hpp" 4933#if INCLUDE_VM_STRUCTS 4934#include "runtime/vmStructs.hpp" 4935#endif 4936 4937#define run_unit_test(unit_test_function_call) \ 4938 tty->print_cr("Running test: " #unit_test_function_call); \ 4939 unit_test_function_call 4940 4941// Forward declaration 4942void TestReservedSpace_test(); 4943void TestReserveMemorySpecial_test(); 4944void TestVirtualSpace_test(); 4945void TestMetaspaceAux_test(); 4946void TestMetachunk_test(); 4947void TestVirtualSpaceNode_test(); 4948#if INCLUDE_ALL_GCS 4949void TestG1BiasedArray_test(); 4950#endif 4951 4952void execute_internal_vm_tests() { 4953 if (ExecuteInternalVMTests) { 4954 tty->print_cr("Running internal VM tests"); 4955 run_unit_test(TestReservedSpace_test()); 4956 run_unit_test(TestReserveMemorySpecial_test()); 4957 run_unit_test(TestVirtualSpace_test()); 4958 run_unit_test(TestMetaspaceAux_test()); 4959 run_unit_test(TestMetachunk_test()); 4960 run_unit_test(TestVirtualSpaceNode_test()); 4961 run_unit_test(GlobalDefinitions::test_globals()); 4962 run_unit_test(GCTimerAllTest::all()); 4963 run_unit_test(arrayOopDesc::test_max_array_length()); 4964 run_unit_test(CollectedHeap::test_is_in()); 4965 run_unit_test(QuickSort::test_quick_sort()); 4966 run_unit_test(AltHashing::test_alt_hash()); 4967 run_unit_test(test_loggc_filename()); 4968#if INCLUDE_VM_STRUCTS 4969 run_unit_test(VMStructs::test()); 4970#endif 4971#if INCLUDE_ALL_GCS 4972 run_unit_test(TestG1BiasedArray_test()); 4973 run_unit_test(HeapRegionRemSet::test_prt()); 4974#endif 4975 tty->print_cr("All internal VM tests passed"); 4976 } 4977} 4978 4979#undef run_unit_test 4980 4981#endif 4982 4983#ifndef USDT2 4984HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 4985DT_RETURN_MARK_DECL(CreateJavaVM, jint); 4986#else /* USDT2 */ 4987DT_RETURN_MARK_DECL(CreateJavaVM, jint 4988 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref)); 4989#endif /* USDT2 */ 4990 4991_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) { 4992#ifndef USDT2 4993 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 4994#else /* USDT2 */ 4995 HOTSPOT_JNI_CREATEJAVAVM_ENTRY((void **) vm, penv, args); 4996#endif /* USDT2 */ 4997 4998 jint result = JNI_ERR; 4999 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result); 5000 5001 // We're about to use Atomic::xchg for synchronization. Some Zero 5002 // platforms use the GCC builtin __sync_lock_test_and_set for this, 5003 // but __sync_lock_test_and_set is not guaranteed to do what we want 5004 // on all architectures. So we check it works before relying on it. 5005#if defined(ZERO) && defined(ASSERT) 5006 { 5007 jint a = 0xcafebabe; 5008 jint b = Atomic::xchg(0xdeadbeef, &a); 5009 void *c = &a; 5010 void *d = Atomic::xchg_ptr(&b, &c); 5011 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works"); 5012 assert(c == &b && d == &a, "Atomic::xchg_ptr() works"); 5013 } 5014#endif // ZERO && ASSERT 5015 5016 // At the moment it's only possible to have one Java VM, 5017 // since some of the runtime state is in global variables. 5018 5019 // We cannot use our mutex locks here, since they only work on 5020 // Threads. We do an atomic compare and exchange to ensure only 5021 // one thread can call this method at a time 5022 5023 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms 5024 // the add/dec implementations are dependent on whether we are running 5025 // on a multiprocessor, and at this stage of initialization the os::is_MP 5026 // function used to determine this will always return false. Atomic::xchg 5027 // does not have this problem. 5028 if (Atomic::xchg(1, &vm_created) == 1) { 5029 return JNI_EEXIST; // already created, or create attempt in progress 5030 } 5031 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) { 5032 return JNI_ERR; // someone tried and failed and retry not allowed. 5033 } 5034 5035 assert(vm_created == 1, "vm_created is true during the creation"); 5036 5037 /** 5038 * Certain errors during initialization are recoverable and do not 5039 * prevent this method from being called again at a later time 5040 * (perhaps with different arguments). However, at a certain 5041 * point during initialization if an error occurs we cannot allow 5042 * this function to be called again (or it will crash). In those 5043 * situations, the 'canTryAgain' flag is set to false, which atomically 5044 * sets safe_to_recreate_vm to 1, such that any new call to 5045 * JNI_CreateJavaVM will immediately fail using the above logic. 5046 */ 5047 bool can_try_again = true; 5048 5049 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again); 5050 if (result == JNI_OK) { 5051 JavaThread *thread = JavaThread::current(); 5052 /* thread is thread_in_vm here */ 5053 *vm = (JavaVM *)(&main_vm); 5054 *(JNIEnv**)penv = thread->jni_environment(); 5055 5056 // Tracks the time application was running before GC 5057 RuntimeService::record_application_start(); 5058 5059 // Notify JVMTI 5060 if (JvmtiExport::should_post_thread_life()) { 5061 JvmtiExport::post_thread_start(thread); 5062 } 5063 5064 EventThreadStart event; 5065 if (event.should_commit()) { 5066 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5067 event.commit(); 5068 } 5069 5070#ifndef PRODUCT 5071 #ifndef TARGET_OS_FAMILY_windows 5072 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f() 5073 #endif 5074 5075 // Check if we should compile all classes on bootclasspath 5076 if (CompileTheWorld) ClassLoader::compile_the_world(); 5077 if (ReplayCompiles) ciReplay::replay(thread); 5078 5079 // Some platforms (like Win*) need a wrapper around these test 5080 // functions in order to properly handle error conditions. 5081 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler); 5082 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests); 5083#endif 5084 5085 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. 5086 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5087 } else { 5088 if (can_try_again) { 5089 // reset safe_to_recreate_vm to 1 so that retrial would be possible 5090 safe_to_recreate_vm = 1; 5091 } 5092 5093 // Creation failed. We must reset vm_created 5094 *vm = 0; 5095 *(JNIEnv**)penv = 0; 5096 // reset vm_created last to avoid race condition. Use OrderAccess to 5097 // control both compiler and architectural-based reordering. 5098 OrderAccess::release_store(&vm_created, 0); 5099 } 5100 5101 return result; 5102} 5103 5104#ifndef USDT2 5105HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5106 JavaVM**, jsize, jsize*); 5107HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); 5108#endif /* !USDT2 */ 5109 5110_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { 5111 // See bug 4367188, the wrapper can sometimes cause VM crashes 5112 // JNIWrapper("GetCreatedJavaVMs"); 5113#ifndef USDT2 5114 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5115 vm_buf, bufLen, numVMs); 5116#else /* USDT2 */ 5117 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY((void **) vm_buf, bufLen, (uintptr_t *) numVMs); 5118#endif /* USDT2 */ 5119 if (vm_created) { 5120 if (numVMs != NULL) *numVMs = 1; 5121 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); 5122 } else { 5123 if (numVMs != NULL) *numVMs = 0; 5124 } 5125#ifndef USDT2 5126 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); 5127#else /* USDT2 */ 5128 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(JNI_OK); 5129#endif /* USDT2 */ 5130 return JNI_OK; 5131} 5132 5133extern "C" { 5134 5135#ifndef USDT2 5136DT_RETURN_MARK_DECL(DestroyJavaVM, jint); 5137#else /* USDT2 */ 5138DT_RETURN_MARK_DECL(DestroyJavaVM, jint 5139 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref)); 5140#endif /* USDT2 */ 5141 5142jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { 5143#ifndef USDT2 5144 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); 5145#else /* USDT2 */ 5146 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(vm); 5147#endif /* USDT2 */ 5148 jint res = JNI_ERR; 5149 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); 5150 5151 if (!vm_created) { 5152 res = JNI_ERR; 5153 return res; 5154 } 5155 5156 JNIWrapper("DestroyJavaVM"); 5157 JNIEnv *env; 5158 JavaVMAttachArgs destroyargs; 5159 destroyargs.version = CurrentVersion; 5160 destroyargs.name = (char *)"DestroyJavaVM"; 5161 destroyargs.group = NULL; 5162 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); 5163 if (res != JNI_OK) { 5164 return res; 5165 } 5166 5167 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. 5168 JavaThread* thread = JavaThread::current(); 5169 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5170 if (Threads::destroy_vm()) { 5171 // Should not change thread state, VM is gone 5172 vm_created = false; 5173 res = JNI_OK; 5174 return res; 5175 } else { 5176 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5177 res = JNI_ERR; 5178 return res; 5179 } 5180} 5181 5182 5183static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { 5184 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; 5185 5186 // Check below commented out from JDK1.2fcs as well 5187 /* 5188 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { 5189 return JNI_EVERSION; 5190 } 5191 */ 5192 5193 Thread* t = ThreadLocalStorage::get_thread_slow(); 5194 if (t != NULL) { 5195 // If the thread has been attached this operation is a no-op 5196 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); 5197 return JNI_OK; 5198 } 5199 5200 // Create a thread and mark it as attaching so it will be skipped by the 5201 // ThreadsListEnumerator - see CR 6404306 5202 JavaThread* thread = new JavaThread(true); 5203 5204 // Set correct safepoint info. The thread is going to call into Java when 5205 // initializing the Java level thread object. Hence, the correct state must 5206 // be set in order for the Safepoint code to deal with it correctly. 5207 thread->set_thread_state(_thread_in_vm); 5208 // Must do this before initialize_thread_local_storage 5209 thread->record_stack_base_and_size(); 5210 5211 thread->initialize_thread_local_storage(); 5212 5213 if (!os::create_attached_thread(thread)) { 5214 delete thread; 5215 return JNI_ERR; 5216 } 5217 // Enable stack overflow checks 5218 thread->create_stack_guard_pages(); 5219 5220 thread->initialize_tlab(); 5221 5222 thread->cache_global_variables(); 5223 5224 // Crucial that we do not have a safepoint check for this thread, since it has 5225 // not been added to the Thread list yet. 5226 { Threads_lock->lock_without_safepoint_check(); 5227 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to 5228 // avoid this thread trying to do a GC before it is added to the thread-list 5229 thread->set_active_handles(JNIHandleBlock::allocate_block()); 5230 Threads::add(thread, daemon); 5231 Threads_lock->unlock(); 5232 } 5233 // Create thread group and name info from attach arguments 5234 oop group = NULL; 5235 char* thread_name = NULL; 5236 if (args != NULL && Threads::is_supported_jni_version(args->version)) { 5237 group = JNIHandles::resolve(args->group); 5238 thread_name = args->name; // may be NULL 5239 } 5240 if (group == NULL) group = Universe::main_thread_group(); 5241 5242 // Create Java level thread object and attach it to this thread 5243 bool attach_failed = false; 5244 { 5245 EXCEPTION_MARK; 5246 HandleMark hm(THREAD); 5247 Handle thread_group(THREAD, group); 5248 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); 5249 if (HAS_PENDING_EXCEPTION) { 5250 CLEAR_PENDING_EXCEPTION; 5251 // cleanup outside the handle mark. 5252 attach_failed = true; 5253 } 5254 } 5255 5256 if (attach_failed) { 5257 // Added missing cleanup 5258 thread->cleanup_failed_attach_current_thread(); 5259 return JNI_ERR; 5260 } 5261 5262 // mark the thread as no longer attaching 5263 // this uses a fence to push the change through so we don't have 5264 // to regrab the threads_lock 5265 thread->set_done_attaching_via_jni(); 5266 5267 // Set java thread status. 5268 java_lang_Thread::set_thread_status(thread->threadObj(), 5269 java_lang_Thread::RUNNABLE); 5270 5271 // Notify the debugger 5272 if (JvmtiExport::should_post_thread_life()) { 5273 JvmtiExport::post_thread_start(thread); 5274 } 5275 5276 EventThreadStart event; 5277 if (event.should_commit()) { 5278 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5279 event.commit(); 5280 } 5281 5282 *(JNIEnv**)penv = thread->jni_environment(); 5283 5284 // Now leaving the VM, so change thread_state. This is normally automatically taken care 5285 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by 5286 // using ThreadStateTransition::transition, we do a callback to the safepoint code if 5287 // needed. 5288 5289 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5290 5291 // Perform any platform dependent FPU setup 5292 os::setup_fpu(); 5293 5294 return JNI_OK; 5295} 5296 5297 5298jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { 5299#ifndef USDT2 5300 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); 5301#else /* USDT2 */ 5302 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(vm, penv, _args); 5303#endif /* USDT2 */ 5304 if (!vm_created) { 5305#ifndef USDT2 5306 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); 5307#else /* USDT2 */ 5308 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR); 5309#endif /* USDT2 */ 5310 return JNI_ERR; 5311 } 5312 5313 JNIWrapper("AttachCurrentThread"); 5314 jint ret = attach_current_thread(vm, penv, _args, false); 5315#ifndef USDT2 5316 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); 5317#else /* USDT2 */ 5318 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(ret); 5319#endif /* USDT2 */ 5320 return ret; 5321} 5322 5323 5324jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { 5325#ifndef USDT2 5326 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); 5327#else /* USDT2 */ 5328 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(vm); 5329#endif /* USDT2 */ 5330 VM_Exit::block_if_vm_exited(); 5331 5332 JNIWrapper("DetachCurrentThread"); 5333 5334 // If the thread has been deattacted the operations is a no-op 5335 if (ThreadLocalStorage::thread() == NULL) { 5336#ifndef USDT2 5337 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5338#else /* USDT2 */ 5339 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK); 5340#endif /* USDT2 */ 5341 return JNI_OK; 5342 } 5343 5344 JavaThread* thread = JavaThread::current(); 5345 if (thread->has_last_Java_frame()) { 5346#ifndef USDT2 5347 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); 5348#else /* USDT2 */ 5349 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR); 5350#endif /* USDT2 */ 5351 // Can't detach a thread that's running java, that can't work. 5352 return JNI_ERR; 5353 } 5354 5355 // Safepoint support. Have to do call-back to safepoint code, if in the 5356 // middel of a safepoint operation 5357 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5358 5359 // XXX: Note that JavaThread::exit() call below removes the guards on the 5360 // stack pages set up via enable_stack_{red,yellow}_zone() calls 5361 // above in jni_AttachCurrentThread. Unfortunately, while the setting 5362 // of the guards is visible in jni_AttachCurrentThread above, 5363 // the removal of the guards is buried below in JavaThread::exit() 5364 // here. The abstraction should be more symmetrically either exposed 5365 // or hidden (e.g. it could probably be hidden in the same 5366 // (platform-dependent) methods where we do alternate stack 5367 // maintenance work?) 5368 thread->exit(false, JavaThread::jni_detach); 5369 delete thread; 5370 5371#ifndef USDT2 5372 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5373#else /* USDT2 */ 5374 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK); 5375#endif /* USDT2 */ 5376 return JNI_OK; 5377} 5378 5379#ifndef USDT2 5380DT_RETURN_MARK_DECL(GetEnv, jint); 5381#else /* USDT2 */ 5382DT_RETURN_MARK_DECL(GetEnv, jint 5383 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref)); 5384#endif /* USDT2 */ 5385 5386jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { 5387#ifndef USDT2 5388 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); 5389#else /* USDT2 */ 5390 HOTSPOT_JNI_GETENV_ENTRY(vm, penv, version); 5391#endif /* USDT2 */ 5392 jint ret = JNI_ERR; 5393 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); 5394 5395 if (!vm_created) { 5396 *penv = NULL; 5397 ret = JNI_EDETACHED; 5398 return ret; 5399 } 5400 5401 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) { 5402 return ret; 5403 } 5404 5405#ifndef JVMPI_VERSION_1 5406// need these in order to be polite about older agents 5407#define JVMPI_VERSION_1 ((jint)0x10000001) 5408#define JVMPI_VERSION_1_1 ((jint)0x10000002) 5409#define JVMPI_VERSION_1_2 ((jint)0x10000003) 5410#endif // !JVMPI_VERSION_1 5411 5412 Thread* thread = ThreadLocalStorage::thread(); 5413 if (thread != NULL && thread->is_Java_thread()) { 5414 if (Threads::is_supported_jni_version_including_1_1(version)) { 5415 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); 5416 ret = JNI_OK; 5417 return ret; 5418 5419 } else if (version == JVMPI_VERSION_1 || 5420 version == JVMPI_VERSION_1_1 || 5421 version == JVMPI_VERSION_1_2) { 5422 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); 5423 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5424 ret = JNI_EVERSION; 5425 return ret; 5426 } else if (JvmtiExport::is_jvmdi_version(version)) { 5427 tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); 5428 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5429 ret = JNI_EVERSION; 5430 return ret; 5431 } else { 5432 *penv = NULL; 5433 ret = JNI_EVERSION; 5434 return ret; 5435 } 5436 } else { 5437 *penv = NULL; 5438 ret = JNI_EDETACHED; 5439 return ret; 5440 } 5441} 5442 5443 5444jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { 5445#ifndef USDT2 5446 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); 5447#else /* USDT2 */ 5448 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(vm, penv, _args); 5449#endif /* USDT2 */ 5450 if (!vm_created) { 5451#ifndef USDT2 5452 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); 5453#else /* USDT2 */ 5454 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN((uint32_t) JNI_ERR); 5455#endif /* USDT2 */ 5456 return JNI_ERR; 5457 } 5458 5459 JNIWrapper("AttachCurrentThreadAsDaemon"); 5460 jint ret = attach_current_thread(vm, penv, _args, true); 5461#ifndef USDT2 5462 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); 5463#else /* USDT2 */ 5464 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(ret); 5465#endif /* USDT2 */ 5466 return ret; 5467} 5468 5469 5470} // End extern "C" 5471 5472const struct JNIInvokeInterface_ jni_InvokeInterface = { 5473 NULL, 5474 NULL, 5475 NULL, 5476 5477 jni_DestroyJavaVM, 5478 jni_AttachCurrentThread, 5479 jni_DetachCurrentThread, 5480 jni_GetEnv, 5481 jni_AttachCurrentThreadAsDaemon 5482}; 5483