jni.cpp revision 4454:cc32ccaaf47f
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 "trace/traceEventTypes.hpp" 78#include "utilities/defaultStream.hpp" 79#include "utilities/dtrace.hpp" 80#include "utilities/events.hpp" 81#include "utilities/histogram.hpp" 82#ifdef TARGET_OS_FAMILY_linux 83# include "os_linux.inline.hpp" 84#endif 85#ifdef TARGET_OS_FAMILY_solaris 86# include "os_solaris.inline.hpp" 87#endif 88#ifdef TARGET_OS_FAMILY_windows 89# include "os_windows.inline.hpp" 90#endif 91#ifdef TARGET_OS_FAMILY_bsd 92# include "os_bsd.inline.hpp" 93#endif 94 95static jint CurrentVersion = JNI_VERSION_1_8; 96 97 98// The DT_RETURN_MARK macros create a scoped object to fire the dtrace 99// '-return' probe regardless of the return path is taken out of the function. 100// Methods that have multiple return paths use this to avoid having to 101// instrument each return path. Methods that use CHECK or THROW must use this 102// since those macros can cause an immedate uninstrumented return. 103// 104// In order to get the return value, a reference to the variable containing 105// the return value must be passed to the contructor of the object, and 106// the return value must be set before return (since the mark object has 107// a reference to it). 108// 109// Example: 110// DT_RETURN_MARK_DECL(SomeFunc, int); 111// JNI_ENTRY(int, SomeFunc, ...) 112// int return_value = 0; 113// DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); 114// foo(CHECK_0) 115// return_value = 5; 116// return return_value; 117// JNI_END 118#ifndef USDT2 119#define DT_RETURN_MARK_DECL(name, type) \ 120 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ 121 DTRACE_ONLY( \ 122 class DTraceReturnProbeMark_##name { \ 123 public: \ 124 const type& _ret_ref; \ 125 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 126 ~DTraceReturnProbeMark_##name() { \ 127 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ 128 } \ 129 } \ 130 ) 131// Void functions are simpler since there's no return value 132#define DT_VOID_RETURN_MARK_DECL(name) \ 133 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ 134 DTRACE_ONLY( \ 135 class DTraceReturnProbeMark_##name { \ 136 public: \ 137 ~DTraceReturnProbeMark_##name() { \ 138 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ 139 } \ 140 } \ 141 ) 142 143#else /* USDT2 */ 144 145#define DT_RETURN_MARK_DECL(name, type, probe) \ 146 DTRACE_ONLY( \ 147 class DTraceReturnProbeMark_##name { \ 148 public: \ 149 const type& _ret_ref; \ 150 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 151 ~DTraceReturnProbeMark_##name() { \ 152 probe; \ 153 } \ 154 } \ 155 ) 156// Void functions are simpler since there's no return value 157#define DT_VOID_RETURN_MARK_DECL(name, probe) \ 158 DTRACE_ONLY( \ 159 class DTraceReturnProbeMark_##name { \ 160 public: \ 161 ~DTraceReturnProbeMark_##name() { \ 162 probe; \ 163 } \ 164 } \ 165 ) 166#endif /* USDT2 */ 167 168// Place these macros in the function to mark the return. Non-void 169// functions need the type and address of the return value. 170#define DT_RETURN_MARK(name, type, ref) \ 171 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) 172#define DT_VOID_RETURN_MARK(name) \ 173 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) 174 175 176// Use these to select distinct code for floating-point vs. non-floating point 177// situations. Used from within common macros where we need slightly 178// different behavior for Float/Double 179#define FP_SELECT_Boolean(intcode, fpcode) intcode 180#define FP_SELECT_Byte(intcode, fpcode) intcode 181#define FP_SELECT_Char(intcode, fpcode) intcode 182#define FP_SELECT_Short(intcode, fpcode) intcode 183#define FP_SELECT_Object(intcode, fpcode) intcode 184#define FP_SELECT_Int(intcode, fpcode) intcode 185#define FP_SELECT_Long(intcode, fpcode) intcode 186#define FP_SELECT_Float(intcode, fpcode) fpcode 187#define FP_SELECT_Double(intcode, fpcode) fpcode 188#define FP_SELECT(TypeName, intcode, fpcode) \ 189 FP_SELECT_##TypeName(intcode, fpcode) 190 191#define COMMA , 192 193// Choose DT_RETURN_MARK macros based on the type: float/double -> void 194// (dtrace doesn't do FP yet) 195#ifndef USDT2 196#define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ 197 FP_SELECT(TypeName, \ 198 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) 199#else /* USDT2 */ 200#define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \ 201 FP_SELECT(TypeName, \ 202 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) ) 203#endif /* USDT2 */ 204#define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ 205 FP_SELECT(TypeName, \ 206 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) 207 208 209// out-of-line helpers for class jfieldIDWorkaround: 210 211bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) { 212 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { 213 uintptr_t as_uint = (uintptr_t) id; 214 intptr_t offset = raw_instance_offset(id); 215 if (is_checked_jfieldID(id)) { 216 if (!klass_hash_ok(k, id)) { 217 return false; 218 } 219 } 220 return InstanceKlass::cast(k)->contains_field_offset(offset); 221 } else { 222 JNIid* result = (JNIid*) id; 223#ifdef ASSERT 224 return result != NULL && result->is_static_field_id(); 225#else 226 return result != NULL; 227#endif 228 } 229} 230 231 232intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) { 233 if (offset <= small_offset_mask) { 234 Klass* field_klass = k; 235 Klass* super_klass = field_klass->super(); 236 // With compressed oops the most super class with nonstatic fields would 237 // be the owner of fields embedded in the header. 238 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() && 239 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) { 240 field_klass = super_klass; // super contains the field also 241 super_klass = field_klass->super(); 242 } 243 debug_only(No_Safepoint_Verifier nosafepoint;) 244 uintptr_t klass_hash = field_klass->identity_hash(); 245 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; 246 } else { 247#if 0 248 #ifndef PRODUCT 249 { 250 ResourceMark rm; 251 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name()); 252 } 253 #endif 254#endif 255 return 0; 256 } 257} 258 259bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) { 260 uintptr_t as_uint = (uintptr_t) id; 261 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; 262 do { 263 debug_only(No_Safepoint_Verifier nosafepoint;) 264 // Could use a non-blocking query for identity_hash here... 265 if ((k->identity_hash() & klass_mask) == klass_hash) 266 return true; 267 k = k->super(); 268 } while (k != NULL); 269 return false; 270} 271 272void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) { 273 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); 274 uintptr_t as_uint = (uintptr_t) id; 275 intptr_t offset = raw_instance_offset(id); 276 if (VerifyJNIFields) { 277 if (is_checked_jfieldID(id)) { 278 guarantee(klass_hash_ok(k, id), 279 "Bug in native code: jfieldID class must match object"); 280 } else { 281#if 0 282 #ifndef PRODUCT 283 if (Verbose) { 284 ResourceMark rm; 285 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name()); 286 } 287 #endif 288#endif 289 } 290 } 291 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset), 292 "Bug in native code: jfieldID offset must address interior of object"); 293} 294 295// Pick a reasonable higher bound for local capacity requested 296// for EnsureLocalCapacity and PushLocalFrame. We don't want it too 297// high because a test (or very unusual application) may try to allocate 298// that many handles and run out of swap space. An implementation is 299// permitted to allocate more handles than the ensured capacity, so this 300// value is set high enough to prevent compatibility problems. 301const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K; 302 303 304// Wrapper to trace JNI functions 305 306#ifdef ASSERT 307 Histogram* JNIHistogram; 308 static volatile jint JNIHistogram_lock = 0; 309 310 class JNITraceWrapper : public StackObj { 311 public: 312 JNITraceWrapper(const char* format, ...) { 313 if (TraceJNICalls) { 314 va_list ap; 315 va_start(ap, format); 316 tty->print("JNI "); 317 tty->vprint_cr(format, ap); 318 va_end(ap); 319 } 320 } 321 }; 322 323 class JNIHistogramElement : public HistogramElement { 324 public: 325 JNIHistogramElement(const char* name); 326 }; 327 328 JNIHistogramElement::JNIHistogramElement(const char* elementName) { 329 _name = elementName; 330 uintx count = 0; 331 332 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { 333 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { 334 count +=1; 335 if ( (WarnOnStalledSpinLock > 0) 336 && (count % WarnOnStalledSpinLock == 0)) { 337 warning("JNIHistogram_lock seems to be stalled"); 338 } 339 } 340 } 341 342 343 if(JNIHistogram == NULL) 344 JNIHistogram = new Histogram("JNI Call Counts",100); 345 346 JNIHistogram->add_element(this); 347 Atomic::dec(&JNIHistogram_lock); 348 } 349 350 #define JNICountWrapper(arg) \ 351 static JNIHistogramElement* e = new JNIHistogramElement(arg); \ 352 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ 353 if (e != NULL) e->increment_count() 354 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) 355#else 356 #define JNIWrapper(arg) 357#endif 358 359 360// Implementation of JNI entries 361 362#ifndef USDT2 363DT_RETURN_MARK_DECL(DefineClass, jclass); 364#else /* USDT2 */ 365DT_RETURN_MARK_DECL(DefineClass, jclass 366 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref)); 367#endif /* USDT2 */ 368 369JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, 370 const jbyte *buf, jsize bufLen)) 371 JNIWrapper("DefineClass"); 372 373#ifndef USDT2 374 DTRACE_PROBE5(hotspot_jni, DefineClass__entry, 375 env, name, loaderRef, buf, bufLen); 376#else /* USDT2 */ 377 HOTSPOT_JNI_DEFINECLASS_ENTRY( 378 env, (char*) name, loaderRef, (char*) buf, bufLen); 379#endif /* USDT2 */ 380 jclass cls = NULL; 381 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); 382 383 TempNewSymbol class_name = NULL; 384 // Since exceptions can be thrown, class initialization can take place 385 // if name is NULL no check for class name in .class stream has to be made. 386 if (name != NULL) { 387 const int str_len = (int)strlen(name); 388 if (str_len > Symbol::max_length()) { 389 // It's impossible to create this class; the name cannot fit 390 // into the constant pool. 391 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 392 } 393 class_name = SymbolTable::new_symbol(name, CHECK_NULL); 394 } 395 ResourceMark rm(THREAD); 396 ClassFileStream st((u1*) buf, bufLen, NULL); 397 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); 398 399 if (UsePerfData && !class_loader.is_null()) { 400 // check whether the current caller thread holds the lock or not. 401 // If not, increment the corresponding counter 402 if (ObjectSynchronizer:: 403 query_lock_ownership((JavaThread*)THREAD, class_loader) != 404 ObjectSynchronizer::owner_self) { 405 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); 406 } 407 } 408 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, 409 Handle(), &st, true, 410 CHECK_NULL); 411 412 if (TraceClassResolution && k != NULL) { 413 trace_class_resolution(k); 414 } 415 416 cls = (jclass)JNIHandles::make_local( 417 env, k->java_mirror()); 418 return cls; 419JNI_END 420 421 422 423static bool first_time_FindClass = true; 424 425#ifndef USDT2 426DT_RETURN_MARK_DECL(FindClass, jclass); 427#else /* USDT2 */ 428DT_RETURN_MARK_DECL(FindClass, jclass 429 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref)); 430#endif /* USDT2 */ 431 432JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) 433 JNIWrapper("FindClass"); 434#ifndef USDT2 435 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); 436#else /* USDT2 */ 437 HOTSPOT_JNI_FINDCLASS_ENTRY( 438 env, (char *)name); 439#endif /* USDT2 */ 440 441 jclass result = NULL; 442 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); 443 444 // Remember if we are the first invocation of jni_FindClass 445 bool first_time = first_time_FindClass; 446 first_time_FindClass = false; 447 448 // Sanity check the name: it cannot be null or larger than the maximum size 449 // name we can fit in the constant pool. 450 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { 451 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 452 } 453 454 //%note jni_3 455 Handle loader; 456 Handle protection_domain; 457 // Find calling class 458 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); 459 if (k.not_null()) { 460 loader = Handle(THREAD, k->class_loader()); 461 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed 462 // in the correct class context. 463 if (loader.is_null() && 464 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { 465 JavaValue result(T_OBJECT); 466 JavaCalls::call_static(&result, k, 467 vmSymbols::getFromClass_name(), 468 vmSymbols::void_class_signature(), 469 thread); 470 if (HAS_PENDING_EXCEPTION) { 471 Handle ex(thread, thread->pending_exception()); 472 CLEAR_PENDING_EXCEPTION; 473 THROW_HANDLE_0(ex); 474 } 475 oop mirror = (oop) result.get_jobject(); 476 loader = Handle(THREAD, 477 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader()); 478 protection_domain = Handle(THREAD, 479 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain()); 480 } 481 } else { 482 // We call ClassLoader.getSystemClassLoader to obtain the system class loader. 483 loader = Handle(THREAD, SystemDictionary::java_system_loader()); 484 } 485 486 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 487 result = find_class_from_class_loader(env, sym, true, loader, 488 protection_domain, true, thread); 489 490 if (TraceClassResolution && result != NULL) { 491 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 492 } 493 494 // If we were the first invocation of jni_FindClass, we enable compilation again 495 // rather than just allowing invocation counter to overflow and decay. 496 // Controlled by flag DelayCompilationDuringStartup. 497 if (first_time && !CompileTheWorld) 498 CompilationPolicy::completed_vm_startup(); 499 500 return result; 501JNI_END 502 503#ifndef USDT2 504DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); 505#else /* USDT2 */ 506DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID 507 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref)); 508#endif /* USDT2 */ 509 510JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) 511 JNIWrapper("FromReflectedMethod"); 512#ifndef USDT2 513 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); 514#else /* USDT2 */ 515 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY( 516 env, method); 517#endif /* USDT2 */ 518 jmethodID ret = NULL; 519 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); 520 521 // method is a handle to a java.lang.reflect.Method object 522 oop reflected = JNIHandles::resolve_non_null(method); 523 oop mirror = NULL; 524 int slot = 0; 525 526 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { 527 mirror = java_lang_reflect_Constructor::clazz(reflected); 528 slot = java_lang_reflect_Constructor::slot(reflected); 529 } else { 530 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type"); 531 mirror = java_lang_reflect_Method::clazz(reflected); 532 slot = java_lang_reflect_Method::slot(reflected); 533 } 534 Klass* k = java_lang_Class::as_Klass(mirror); 535 536 KlassHandle k1(THREAD, k); 537 // Make sure class is initialized before handing id's out to methods 538 k1()->initialize(CHECK_NULL); 539 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot); 540 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted 541 return ret; 542JNI_END 543 544#ifndef USDT2 545DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); 546#else /* USDT2 */ 547DT_RETURN_MARK_DECL(FromReflectedField, jfieldID 548 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref)); 549#endif /* USDT2 */ 550 551JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) 552 JNIWrapper("FromReflectedField"); 553#ifndef USDT2 554 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); 555#else /* USDT2 */ 556 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY( 557 env, field); 558#endif /* USDT2 */ 559 jfieldID ret = NULL; 560 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); 561 562 // field is a handle to a java.lang.reflect.Field object 563 oop reflected = JNIHandles::resolve_non_null(field); 564 oop mirror = java_lang_reflect_Field::clazz(reflected); 565 Klass* k = java_lang_Class::as_Klass(mirror); 566 int slot = java_lang_reflect_Field::slot(reflected); 567 int modifiers = java_lang_reflect_Field::modifiers(reflected); 568 569 KlassHandle k1(THREAD, k); 570 // Make sure class is initialized before handing id's out to fields 571 k1()->initialize(CHECK_NULL); 572 573 // First check if this is a static field 574 if (modifiers & JVM_ACC_STATIC) { 575 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 576 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset); 577 assert(id != NULL, "corrupt Field object"); 578 debug_only(id->set_is_static_field_id();) 579 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 580 ret = jfieldIDWorkaround::to_static_jfieldID(id); 581 return ret; 582 } 583 584 // The slot is the index of the field description in the field-array 585 // The jfieldID is the offset of the field within the object 586 // It may also have hash bits for k, if VerifyJNIFields is turned on. 587 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 588 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); 589 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); 590 return ret; 591JNI_END 592 593#ifndef USDT2 594DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); 595#else /* USDT2 */ 596DT_RETURN_MARK_DECL(ToReflectedMethod, jobject 597 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref)); 598#endif /* USDT2 */ 599 600JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) 601 JNIWrapper("ToReflectedMethod"); 602#ifndef USDT2 603 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); 604#else /* USDT2 */ 605 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY( 606 env, cls, (uintptr_t) method_id, isStatic); 607#endif /* USDT2 */ 608 jobject ret = NULL; 609 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); 610 611 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id)); 612 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); 613 oop reflection_method; 614 if (m->is_initializer()) { 615 reflection_method = Reflection::new_constructor(m, CHECK_NULL); 616 } else { 617 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); 618 } 619 ret = JNIHandles::make_local(env, reflection_method); 620 return ret; 621JNI_END 622 623#ifndef USDT2 624DT_RETURN_MARK_DECL(GetSuperclass, jclass); 625#else /* USDT2 */ 626DT_RETURN_MARK_DECL(GetSuperclass, jclass 627 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref)); 628#endif /* USDT2 */ 629 630JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) 631 JNIWrapper("GetSuperclass"); 632#ifndef USDT2 633 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); 634#else /* USDT2 */ 635 HOTSPOT_JNI_GETSUPERCLASS_ENTRY( 636 env, sub); 637#endif /* USDT2 */ 638 jclass obj = NULL; 639 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); 640 641 oop mirror = JNIHandles::resolve_non_null(sub); 642 // primitive classes return NULL 643 if (java_lang_Class::is_primitive(mirror)) return NULL; 644 645 // Rules of Class.getSuperClass as implemented by KLass::java_super: 646 // arrays return Object 647 // interfaces return NULL 648 // proper classes return Klass::super() 649 Klass* k = java_lang_Class::as_Klass(mirror); 650 if (k->is_interface()) return NULL; 651 652 // return mirror for superclass 653 Klass* super = k->java_super(); 654 // super2 is the value computed by the compiler's getSuperClass intrinsic: 655 debug_only(Klass* super2 = ( k->oop_is_array() 656 ? SystemDictionary::Object_klass() 657 : k->super() ) ); 658 assert(super == super2, 659 "java_super computation depends on interface, array, other super"); 660 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror()); 661 return obj; 662JNI_END 663 664JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) 665 JNIWrapper("IsSubclassOf"); 666#ifndef USDT2 667 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); 668#else /* USDT2 */ 669 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY( 670 env, sub, super); 671#endif /* USDT2 */ 672 oop sub_mirror = JNIHandles::resolve_non_null(sub); 673 oop super_mirror = JNIHandles::resolve_non_null(super); 674 if (java_lang_Class::is_primitive(sub_mirror) || 675 java_lang_Class::is_primitive(super_mirror)) { 676 jboolean ret = (sub_mirror == super_mirror); 677#ifndef USDT2 678 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 679#else /* USDT2 */ 680 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 681 ret); 682#endif /* USDT2 */ 683 return ret; 684 } 685 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror); 686 Klass* super_klass = java_lang_Class::as_Klass(super_mirror); 687 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom"); 688 jboolean ret = sub_klass->is_subtype_of(super_klass) ? 689 JNI_TRUE : JNI_FALSE; 690#ifndef USDT2 691 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 692#else /* USDT2 */ 693 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 694 ret); 695#endif /* USDT2 */ 696 return ret; 697JNI_END 698 699#ifndef USDT2 700DT_RETURN_MARK_DECL(Throw, jint); 701#else /* USDT2 */ 702DT_RETURN_MARK_DECL(Throw, jint 703 , HOTSPOT_JNI_THROW_RETURN(_ret_ref)); 704#endif /* USDT2 */ 705 706JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) 707 JNIWrapper("Throw"); 708#ifndef USDT2 709 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); 710#else /* USDT2 */ 711 HOTSPOT_JNI_THROW_ENTRY( 712 env, obj); 713#endif /* USDT2 */ 714 jint ret = JNI_OK; 715 DT_RETURN_MARK(Throw, jint, (const jint&)ret); 716 717 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); 718 ShouldNotReachHere(); 719JNI_END 720 721#ifndef USDT2 722DT_RETURN_MARK_DECL(ThrowNew, jint); 723#else /* USDT2 */ 724DT_RETURN_MARK_DECL(ThrowNew, jint 725 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref)); 726#endif /* USDT2 */ 727 728JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) 729 JNIWrapper("ThrowNew"); 730#ifndef USDT2 731 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); 732#else /* USDT2 */ 733 HOTSPOT_JNI_THROWNEW_ENTRY( 734 env, clazz, (char *) message); 735#endif /* USDT2 */ 736 jint ret = JNI_OK; 737 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); 738 739 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 740 Symbol* name = k->name(); 741 Handle class_loader (THREAD, k->class_loader()); 742 Handle protection_domain (THREAD, k->protection_domain()); 743 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); 744 ShouldNotReachHere(); 745JNI_END 746 747 748// JNI functions only transform a pending async exception to a synchronous 749// exception in ExceptionOccurred and ExceptionCheck calls, since 750// delivering an async exception in other places won't change the native 751// code's control flow and would be harmful when native code further calls 752// JNI functions with a pending exception. Async exception is also checked 753// during the call, so ExceptionOccurred/ExceptionCheck won't return 754// false but deliver the async exception at the very end during 755// state transition. 756 757static void jni_check_async_exceptions(JavaThread *thread) { 758 assert(thread == Thread::current(), "must be itself"); 759 thread->check_and_handle_async_exceptions(); 760} 761 762JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) 763 JNIWrapper("ExceptionOccurred"); 764#ifndef USDT2 765 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); 766#else /* USDT2 */ 767 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY( 768 env); 769#endif /* USDT2 */ 770 jni_check_async_exceptions(thread); 771 oop exception = thread->pending_exception(); 772 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); 773#ifndef USDT2 774 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); 775#else /* USDT2 */ 776 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN( 777 ret); 778#endif /* USDT2 */ 779 return ret; 780JNI_END 781 782 783JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) 784 JNIWrapper("ExceptionDescribe"); 785#ifndef USDT2 786 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); 787#else /* USDT2 */ 788 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY( 789 env); 790#endif /* USDT2 */ 791 if (thread->has_pending_exception()) { 792 Handle ex(thread, thread->pending_exception()); 793 thread->clear_pending_exception(); 794 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) { 795 // Don't print anything if we are being killed. 796 } else { 797 jio_fprintf(defaultStream::error_stream(), "Exception "); 798 if (thread != NULL && thread->threadObj() != NULL) { 799 ResourceMark rm(THREAD); 800 jio_fprintf(defaultStream::error_stream(), 801 "in thread \"%s\" ", thread->get_thread_name()); 802 } 803 if (ex->is_a(SystemDictionary::Throwable_klass())) { 804 JavaValue result(T_VOID); 805 JavaCalls::call_virtual(&result, 806 ex, 807 KlassHandle(THREAD, 808 SystemDictionary::Throwable_klass()), 809 vmSymbols::printStackTrace_name(), 810 vmSymbols::void_method_signature(), 811 THREAD); 812 // If an exception is thrown in the call it gets thrown away. Not much 813 // we can do with it. The native code that calls this, does not check 814 // for the exception - hence, it might still be in the thread when DestroyVM gets 815 // called, potentially causing a few asserts to trigger - since no pending exception 816 // is expected. 817 CLEAR_PENDING_EXCEPTION; 818 } else { 819 ResourceMark rm(THREAD); 820 jio_fprintf(defaultStream::error_stream(), 821 ". Uncaught exception of type %s.", 822 ex->klass()->external_name()); 823 } 824 } 825 } 826#ifndef USDT2 827 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); 828#else /* USDT2 */ 829 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN( 830 ); 831#endif /* USDT2 */ 832JNI_END 833 834 835JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) 836 JNIWrapper("ExceptionClear"); 837#ifndef USDT2 838 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); 839#else /* USDT2 */ 840 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY( 841 env); 842#endif /* USDT2 */ 843 844 // The jni code might be using this API to clear java thrown exception. 845 // So just mark jvmti thread exception state as exception caught. 846 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); 847 if (state != NULL && state->is_exception_detected()) { 848 state->set_exception_caught(); 849 } 850 thread->clear_pending_exception(); 851#ifndef USDT2 852 DTRACE_PROBE(hotspot_jni, ExceptionClear__return); 853#else /* USDT2 */ 854 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN( 855 ); 856#endif /* USDT2 */ 857JNI_END 858 859 860JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) 861 JNIWrapper("FatalError"); 862#ifndef USDT2 863 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); 864#else /* USDT2 */ 865 HOTSPOT_JNI_FATALERROR_ENTRY( 866 env, (char *) msg); 867#endif /* USDT2 */ 868 tty->print_cr("FATAL ERROR in native method: %s", msg); 869 thread->print_stack(); 870 os::abort(); // Dump core and abort 871JNI_END 872 873 874JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) 875 JNIWrapper("PushLocalFrame"); 876#ifndef USDT2 877 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); 878#else /* USDT2 */ 879 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY( 880 env, capacity); 881#endif /* USDT2 */ 882 //%note jni_11 883 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) { 884#ifndef USDT2 885 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); 886#else /* USDT2 */ 887 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 888 (uint32_t)JNI_ERR); 889#endif /* USDT2 */ 890 return JNI_ERR; 891 } 892 JNIHandleBlock* old_handles = thread->active_handles(); 893 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 894 assert(new_handles != NULL, "should not be NULL"); 895 new_handles->set_pop_frame_link(old_handles); 896 thread->set_active_handles(new_handles); 897 jint ret = JNI_OK; 898#ifndef USDT2 899 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); 900#else /* USDT2 */ 901 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 902 ret); 903#endif /* USDT2 */ 904 return ret; 905JNI_END 906 907 908JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) 909 JNIWrapper("PopLocalFrame"); 910#ifndef USDT2 911 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); 912#else /* USDT2 */ 913 HOTSPOT_JNI_POPLOCALFRAME_ENTRY( 914 env, result); 915#endif /* USDT2 */ 916 //%note jni_11 917 Handle result_handle(thread, JNIHandles::resolve(result)); 918 JNIHandleBlock* old_handles = thread->active_handles(); 919 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); 920 if (new_handles != NULL) { 921 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. 922 // This way code will still work if PopLocalFrame is called without a corresponding 923 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise 924 // the release_block call will release the blocks. 925 thread->set_active_handles(new_handles); 926 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below 927 JNIHandleBlock::release_block(old_handles, thread); // may block 928 result = JNIHandles::make_local(thread, result_handle()); 929 } 930#ifndef USDT2 931 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); 932#else /* USDT2 */ 933 HOTSPOT_JNI_POPLOCALFRAME_RETURN( 934 result); 935#endif /* USDT2 */ 936 return result; 937JNI_END 938 939 940JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) 941 JNIWrapper("NewGlobalRef"); 942#ifndef USDT2 943 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); 944#else /* USDT2 */ 945 HOTSPOT_JNI_NEWGLOBALREF_ENTRY( 946 env, ref); 947#endif /* USDT2 */ 948 Handle ref_handle(thread, JNIHandles::resolve(ref)); 949 jobject ret = JNIHandles::make_global(ref_handle); 950#ifndef USDT2 951 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); 952#else /* USDT2 */ 953 HOTSPOT_JNI_NEWGLOBALREF_RETURN( 954 ret); 955#endif /* USDT2 */ 956 return ret; 957JNI_END 958 959// Must be JNI_ENTRY (with HandleMark) 960JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) 961 JNIWrapper("DeleteGlobalRef"); 962#ifndef USDT2 963 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); 964#else /* USDT2 */ 965 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY( 966 env, ref); 967#endif /* USDT2 */ 968 JNIHandles::destroy_global(ref); 969#ifndef USDT2 970 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); 971#else /* USDT2 */ 972 HOTSPOT_JNI_DELETEGLOBALREF_RETURN( 973 ); 974#endif /* USDT2 */ 975JNI_END 976 977JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) 978 JNIWrapper("DeleteLocalRef"); 979#ifndef USDT2 980 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); 981#else /* USDT2 */ 982 HOTSPOT_JNI_DELETELOCALREF_ENTRY( 983 env, obj); 984#endif /* USDT2 */ 985 JNIHandles::destroy_local(obj); 986#ifndef USDT2 987 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); 988#else /* USDT2 */ 989 HOTSPOT_JNI_DELETELOCALREF_RETURN( 990 ); 991#endif /* USDT2 */ 992JNI_END 993 994JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) 995 JNIWrapper("IsSameObject"); 996#ifndef USDT2 997 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); 998#else /* USDT2 */ 999 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY( 1000 env, r1, r2); 1001#endif /* USDT2 */ 1002 oop a = JNIHandles::resolve(r1); 1003 oop b = JNIHandles::resolve(r2); 1004 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; 1005#ifndef USDT2 1006 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); 1007#else /* USDT2 */ 1008 HOTSPOT_JNI_ISSAMEOBJECT_RETURN( 1009 ret); 1010#endif /* USDT2 */ 1011 return ret; 1012JNI_END 1013 1014 1015JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) 1016 JNIWrapper("NewLocalRef"); 1017#ifndef USDT2 1018 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); 1019#else /* USDT2 */ 1020 HOTSPOT_JNI_NEWLOCALREF_ENTRY( 1021 env, ref); 1022#endif /* USDT2 */ 1023 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); 1024#ifndef USDT2 1025 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); 1026#else /* USDT2 */ 1027 HOTSPOT_JNI_NEWLOCALREF_RETURN( 1028 ret); 1029#endif /* USDT2 */ 1030 return ret; 1031JNI_END 1032 1033JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) 1034 JNIWrapper("EnsureLocalCapacity"); 1035#ifndef USDT2 1036 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); 1037#else /* USDT2 */ 1038 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY( 1039 env, capacity); 1040#endif /* USDT2 */ 1041 jint ret; 1042 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) { 1043 ret = JNI_OK; 1044 } else { 1045 ret = JNI_ERR; 1046 } 1047#ifndef USDT2 1048 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); 1049#else /* USDT2 */ 1050 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN( 1051 ret); 1052#endif /* USDT2 */ 1053 return ret; 1054JNI_END 1055 1056// Return the Handle Type 1057JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) 1058 JNIWrapper("GetObjectRefType"); 1059#ifndef USDT2 1060 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); 1061#else /* USDT2 */ 1062 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY( 1063 env, obj); 1064#endif /* USDT2 */ 1065 jobjectRefType ret; 1066 if (JNIHandles::is_local_handle(thread, obj) || 1067 JNIHandles::is_frame_handle(thread, obj)) 1068 ret = JNILocalRefType; 1069 else if (JNIHandles::is_global_handle(obj)) 1070 ret = JNIGlobalRefType; 1071 else if (JNIHandles::is_weak_global_handle(obj)) 1072 ret = JNIWeakGlobalRefType; 1073 else 1074 ret = JNIInvalidRefType; 1075#ifndef USDT2 1076 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); 1077#else /* USDT2 */ 1078 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN( 1079 (void *) ret); 1080#endif /* USDT2 */ 1081 return ret; 1082JNI_END 1083 1084 1085class JNI_ArgumentPusher : public SignatureIterator { 1086 protected: 1087 JavaCallArguments* _arguments; 1088 1089 virtual void get_bool () = 0; 1090 virtual void get_char () = 0; 1091 virtual void get_short () = 0; 1092 virtual void get_byte () = 0; 1093 virtual void get_int () = 0; 1094 virtual void get_long () = 0; 1095 virtual void get_float () = 0; 1096 virtual void get_double () = 0; 1097 virtual void get_object () = 0; 1098 1099 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) { 1100 this->_return_type = T_ILLEGAL; 1101 _arguments = NULL; 1102 } 1103 1104 public: 1105 virtual void iterate( uint64_t fingerprint ) = 0; 1106 1107 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } 1108 1109 inline void do_bool() { if (!is_return_type()) get_bool(); } 1110 inline void do_char() { if (!is_return_type()) get_char(); } 1111 inline void do_short() { if (!is_return_type()) get_short(); } 1112 inline void do_byte() { if (!is_return_type()) get_byte(); } 1113 inline void do_int() { if (!is_return_type()) get_int(); } 1114 inline void do_long() { if (!is_return_type()) get_long(); } 1115 inline void do_float() { if (!is_return_type()) get_float(); } 1116 inline void do_double() { if (!is_return_type()) get_double(); } 1117 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } 1118 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array 1119 inline void do_void() { } 1120 1121 JavaCallArguments* arguments() { return _arguments; } 1122 void push_receiver(Handle h) { _arguments->push_oop(h); } 1123}; 1124 1125 1126class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { 1127 protected: 1128 va_list _ap; 1129 1130 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg 1131 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg 1132 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg 1133 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg 1134 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } 1135 1136 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests 1137 1138 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } 1139 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg 1140 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } 1141 inline void get_object() { jobject l = va_arg(_ap, jobject); 1142 _arguments->push_oop(Handle((oop *)l, false)); } 1143 1144 inline void set_ap(va_list rap) { 1145#ifdef va_copy 1146 va_copy(_ap, rap); 1147#elif defined (__va_copy) 1148 __va_copy(_ap, rap); 1149#else 1150 _ap = rap; 1151#endif 1152 } 1153 1154 public: 1155 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap) 1156 : JNI_ArgumentPusher(signature) { 1157 set_ap(rap); 1158 } 1159 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap) 1160 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1161 set_ap(rap); 1162 } 1163 1164 // Optimized path if we have the bitvector form of signature 1165 void iterate( uint64_t fingerprint ) { 1166 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments 1167 else { 1168 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1169 result_feature_mask); 1170 1171 assert(fingerprint, "Fingerprint should not be 0"); 1172 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1173 while ( 1 ) { 1174 switch ( fingerprint & parameter_feature_mask ) { 1175 case bool_parm: 1176 case char_parm: 1177 case short_parm: 1178 case byte_parm: 1179 case int_parm: 1180 get_int(); 1181 break; 1182 case obj_parm: 1183 get_object(); 1184 break; 1185 case long_parm: 1186 get_long(); 1187 break; 1188 case float_parm: 1189 get_float(); 1190 break; 1191 case double_parm: 1192 get_double(); 1193 break; 1194 case done_parm: 1195 return; 1196 break; 1197 default: 1198 ShouldNotReachHere(); 1199 break; 1200 } 1201 fingerprint >>= parameter_feature_size; 1202 } 1203 } 1204 } 1205}; 1206 1207 1208class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { 1209 protected: 1210 const jvalue *_ap; 1211 1212 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); } 1213 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } 1214 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } 1215 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } 1216 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } 1217 1218 inline void get_long() { _arguments->push_long((_ap++)->j); } 1219 inline void get_float() { _arguments->push_float((_ap++)->f); } 1220 inline void get_double() { _arguments->push_double((_ap++)->d);} 1221 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } 1222 1223 inline void set_ap(const jvalue *rap) { _ap = rap; } 1224 1225 public: 1226 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap) 1227 : JNI_ArgumentPusher(signature) { 1228 set_ap(rap); 1229 } 1230 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap) 1231 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1232 set_ap(rap); 1233 } 1234 1235 // Optimized path if we have the bitvector form of signature 1236 void iterate( uint64_t fingerprint ) { 1237 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments 1238 else { 1239 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1240 result_feature_mask); 1241 assert(fingerprint, "Fingerprint should not be 0"); 1242 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1243 while ( 1 ) { 1244 switch ( fingerprint & parameter_feature_mask ) { 1245 case bool_parm: 1246 get_bool(); 1247 break; 1248 case char_parm: 1249 get_char(); 1250 break; 1251 case short_parm: 1252 get_short(); 1253 break; 1254 case byte_parm: 1255 get_byte(); 1256 break; 1257 case int_parm: 1258 get_int(); 1259 break; 1260 case obj_parm: 1261 get_object(); 1262 break; 1263 case long_parm: 1264 get_long(); 1265 break; 1266 case float_parm: 1267 get_float(); 1268 break; 1269 case double_parm: 1270 get_double(); 1271 break; 1272 case done_parm: 1273 return; 1274 break; 1275 default: 1276 ShouldNotReachHere(); 1277 break; 1278 } 1279 fingerprint >>= parameter_feature_size; 1280 } 1281 } 1282 } 1283}; 1284 1285 1286enum JNICallType { 1287 JNI_STATIC, 1288 JNI_VIRTUAL, 1289 JNI_NONVIRTUAL 1290}; 1291 1292 1293 1294static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1295 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id)); 1296 1297 // Create object to hold arguments for the JavaCall, and associate it with 1298 // the jni parser 1299 ResourceMark rm(THREAD); 1300 int number_of_parameters = method->size_of_parameters(); 1301 JavaCallArguments java_args(number_of_parameters); 1302 args->set_java_argument_object(&java_args); 1303 1304 assert(method->is_static(), "method should be static"); 1305 1306 // Fill out JavaCallArguments object 1307 args->iterate( Fingerprinter(method).fingerprint() ); 1308 // Initialize result type 1309 result->set_type(args->get_ret_type()); 1310 1311 // Invoke the method. Result is returned as oop. 1312 JavaCalls::call(result, method, &java_args, CHECK); 1313 1314 // Convert result 1315 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1316 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1317 } 1318} 1319 1320 1321static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1322 oop recv = JNIHandles::resolve(receiver); 1323 if (recv == NULL) { 1324 THROW(vmSymbols::java_lang_NullPointerException()); 1325 } 1326 Handle h_recv(THREAD, recv); 1327 1328 int number_of_parameters; 1329 Method* selected_method; 1330 { 1331 Method* m = Method::resolve_jmethod_id(method_id); 1332 number_of_parameters = m->size_of_parameters(); 1333 Klass* holder = m->method_holder(); 1334 if (!(holder)->is_interface()) { 1335 // non-interface call -- for that little speed boost, don't handlize 1336 debug_only(No_Safepoint_Verifier nosafepoint;) 1337 if (call_type == JNI_VIRTUAL) { 1338 // jni_GetMethodID makes sure class is linked and initialized 1339 // so m should have a valid vtable index. 1340 int vtbl_index = m->vtable_index(); 1341 if (vtbl_index != Method::nonvirtual_vtable_index) { 1342 Klass* k = h_recv->klass(); 1343 // k might be an arrayKlassOop but all vtables start at 1344 // the same place. The cast is to avoid virtual call and assertion. 1345 InstanceKlass *ik = (InstanceKlass*)k; 1346 selected_method = ik->method_at_vtable(vtbl_index); 1347 } else { 1348 // final method 1349 selected_method = m; 1350 } 1351 } else { 1352 // JNI_NONVIRTUAL call 1353 selected_method = m; 1354 } 1355 } else { 1356 // interface call 1357 KlassHandle h_holder(THREAD, holder); 1358 1359 int itbl_index = m->cached_itable_index(); 1360 if (itbl_index == -1) { 1361 itbl_index = klassItable::compute_itable_index(m); 1362 m->set_cached_itable_index(itbl_index); 1363 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again 1364 } 1365 Klass* k = h_recv->klass(); 1366 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); 1367 } 1368 } 1369 1370 methodHandle method(THREAD, selected_method); 1371 1372 // Create object to hold arguments for the JavaCall, and associate it with 1373 // the jni parser 1374 ResourceMark rm(THREAD); 1375 JavaCallArguments java_args(number_of_parameters); 1376 args->set_java_argument_object(&java_args); 1377 1378 // handle arguments 1379 assert(!method->is_static(), "method should not be static"); 1380 args->push_receiver(h_recv); // Push jobject handle 1381 1382 // Fill out JavaCallArguments object 1383 args->iterate( Fingerprinter(method).fingerprint() ); 1384 // Initialize result type 1385 result->set_type(args->get_ret_type()); 1386 1387 // Invoke the method. Result is returned as oop. 1388 JavaCalls::call(result, method, &java_args, CHECK); 1389 1390 // Convert result 1391 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1392 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1393 } 1394} 1395 1396 1397static instanceOop alloc_object(jclass clazz, TRAPS) { 1398 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1399 k()->check_valid_for_instantiation(false, CHECK_NULL); 1400 InstanceKlass::cast(k())->initialize(CHECK_NULL); 1401 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD); 1402 return ih; 1403} 1404 1405#ifndef USDT2 1406DT_RETURN_MARK_DECL(AllocObject, jobject); 1407#else /* USDT2 */ 1408DT_RETURN_MARK_DECL(AllocObject, jobject 1409 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref)); 1410#endif /* USDT2 */ 1411 1412JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) 1413 JNIWrapper("AllocObject"); 1414 1415#ifndef USDT2 1416 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); 1417#else /* USDT2 */ 1418 HOTSPOT_JNI_ALLOCOBJECT_ENTRY( 1419 env, clazz); 1420#endif /* USDT2 */ 1421 jobject ret = NULL; 1422 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); 1423 1424 instanceOop i = alloc_object(clazz, CHECK_NULL); 1425 ret = JNIHandles::make_local(env, i); 1426 return ret; 1427JNI_END 1428 1429#ifndef USDT2 1430DT_RETURN_MARK_DECL(NewObjectA, jobject); 1431#else /* USDT2 */ 1432DT_RETURN_MARK_DECL(NewObjectA, jobject 1433 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref)); 1434#endif /* USDT2 */ 1435 1436JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) 1437 JNIWrapper("NewObjectA"); 1438#ifndef USDT2 1439 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); 1440#else /* USDT2 */ 1441 HOTSPOT_JNI_NEWOBJECTA_ENTRY( 1442 env, clazz, (uintptr_t) methodID); 1443#endif /* USDT2 */ 1444 jobject obj = NULL; 1445 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); 1446 1447 instanceOop i = alloc_object(clazz, CHECK_NULL); 1448 obj = JNIHandles::make_local(env, i); 1449 JavaValue jvalue(T_VOID); 1450 JNI_ArgumentPusherArray ap(methodID, args); 1451 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1452 return obj; 1453JNI_END 1454 1455#ifndef USDT2 1456DT_RETURN_MARK_DECL(NewObjectV, jobject); 1457#else /* USDT2 */ 1458DT_RETURN_MARK_DECL(NewObjectV, jobject 1459 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref)); 1460#endif /* USDT2 */ 1461 1462JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) 1463 JNIWrapper("NewObjectV"); 1464#ifndef USDT2 1465 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); 1466#else /* USDT2 */ 1467 HOTSPOT_JNI_NEWOBJECTV_ENTRY( 1468 env, clazz, (uintptr_t) methodID); 1469#endif /* USDT2 */ 1470 jobject obj = NULL; 1471 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); 1472 1473 instanceOop i = alloc_object(clazz, CHECK_NULL); 1474 obj = JNIHandles::make_local(env, i); 1475 JavaValue jvalue(T_VOID); 1476 JNI_ArgumentPusherVaArg ap(methodID, args); 1477 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1478 return obj; 1479JNI_END 1480 1481#ifndef USDT2 1482DT_RETURN_MARK_DECL(NewObject, jobject); 1483#else /* USDT2 */ 1484DT_RETURN_MARK_DECL(NewObject, jobject 1485 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref)); 1486#endif /* USDT2 */ 1487 1488JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) 1489 JNIWrapper("NewObject"); 1490#ifndef USDT2 1491 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); 1492#else /* USDT2 */ 1493 HOTSPOT_JNI_NEWOBJECT_ENTRY( 1494 env, clazz, (uintptr_t) methodID); 1495#endif /* USDT2 */ 1496 jobject obj = NULL; 1497 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); 1498 1499 instanceOop i = alloc_object(clazz, CHECK_NULL); 1500 obj = JNIHandles::make_local(env, i); 1501 va_list args; 1502 va_start(args, methodID); 1503 JavaValue jvalue(T_VOID); 1504 JNI_ArgumentPusherVaArg ap(methodID, args); 1505 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1506 va_end(args); 1507 return obj; 1508JNI_END 1509 1510 1511JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) 1512 JNIWrapper("GetObjectClass"); 1513#ifndef USDT2 1514 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); 1515#else /* USDT2 */ 1516 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY( 1517 env, obj); 1518#endif /* USDT2 */ 1519 Klass* k = JNIHandles::resolve_non_null(obj)->klass(); 1520 jclass ret = 1521 (jclass) JNIHandles::make_local(env, k->java_mirror()); 1522#ifndef USDT2 1523 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); 1524#else /* USDT2 */ 1525 HOTSPOT_JNI_GETOBJECTCLASS_RETURN( 1526 ret); 1527#endif /* USDT2 */ 1528 return ret; 1529JNI_END 1530 1531JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) 1532 JNIWrapper("IsInstanceOf"); 1533#ifndef USDT2 1534 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); 1535#else /* USDT2 */ 1536 HOTSPOT_JNI_ISINSTANCEOF_ENTRY( 1537 env, obj, clazz); 1538#endif /* USDT2 */ 1539 jboolean ret = JNI_TRUE; 1540 if (obj != NULL) { 1541 ret = JNI_FALSE; 1542 Klass* k = java_lang_Class::as_Klass( 1543 JNIHandles::resolve_non_null(clazz)); 1544 if (k != NULL) { 1545 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; 1546 } 1547 } 1548#ifndef USDT2 1549 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); 1550#else /* USDT2 */ 1551 HOTSPOT_JNI_ISINSTANCEOF_RETURN( 1552 ret); 1553#endif /* USDT2 */ 1554 return ret; 1555JNI_END 1556 1557 1558static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, 1559 const char *sig, bool is_static, TRAPS) { 1560 // %%%% This code should probably just call into a method in the LinkResolver 1561 // 1562 // The class should have been loaded (we have an instance of the class 1563 // passed in) so the method and signature should already be in the symbol 1564 // table. If they're not there, the method doesn't exist. 1565 const char *name_to_probe = (name_str == NULL) 1566 ? vmSymbols::object_initializer_name()->as_C_string() 1567 : name_str; 1568 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe)); 1569 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig)); 1570 1571 if (name == NULL || signature == NULL) { 1572 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1573 } 1574 1575 // Throw a NoSuchMethodError exception if we have an instance of a 1576 // primitive java.lang.Class 1577 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { 1578 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1579 } 1580 1581 KlassHandle klass(THREAD, 1582 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1583 1584 // Make sure class is linked and initialized before handing id's out to 1585 // Method*s. 1586 klass()->initialize(CHECK_NULL); 1587 1588 Method* m; 1589 if (name == vmSymbols::object_initializer_name() || 1590 name == vmSymbols::class_initializer_name()) { 1591 // Never search superclasses for constructors 1592 if (klass->oop_is_instance()) { 1593 m = InstanceKlass::cast(klass())->find_method(name, signature); 1594 } else { 1595 m = NULL; 1596 } 1597 } else { 1598 m = klass->lookup_method(name, signature); 1599 // Look up interfaces 1600 if (m == NULL && klass->oop_is_instance()) { 1601 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name, 1602 signature); 1603 } 1604 } 1605 if (m == NULL || (m->is_static() != is_static)) { 1606 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1607 } 1608 return m->jmethod_id(); 1609} 1610 1611 1612JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, 1613 const char *name, const char *sig)) 1614 JNIWrapper("GetMethodID"); 1615#ifndef USDT2 1616 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); 1617#else /* USDT2 */ 1618 HOTSPOT_JNI_GETMETHODID_ENTRY( 1619 env, clazz, (char *) name, (char *) sig); 1620#endif /* USDT2 */ 1621 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); 1622#ifndef USDT2 1623 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); 1624#else /* USDT2 */ 1625 HOTSPOT_JNI_GETMETHODID_RETURN( 1626 (uintptr_t) ret); 1627#endif /* USDT2 */ 1628 return ret; 1629JNI_END 1630 1631 1632JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, 1633 const char *name, const char *sig)) 1634 JNIWrapper("GetStaticMethodID"); 1635#ifndef USDT2 1636 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); 1637#else /* USDT2 */ 1638 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY( 1639 env, (char *) clazz, (char *) name, (char *)sig); 1640#endif /* USDT2 */ 1641 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); 1642#ifndef USDT2 1643 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); 1644#else /* USDT2 */ 1645 HOTSPOT_JNI_GETSTATICMETHODID_RETURN( 1646 (uintptr_t) ret); 1647#endif /* USDT2 */ 1648 return ret; 1649JNI_END 1650 1651 1652 1653// 1654// Calling Methods 1655// 1656 1657#ifndef USDT2 1658#define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ 1659\ 1660 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ 1661 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ 1662 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ 1663\ 1664JNI_ENTRY(ResultType, \ 1665 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1666 JNIWrapper("Call" XSTR(Result) "Method"); \ 1667\ 1668 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \ 1669 ResultType ret = 0;\ 1670 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1671 (const ResultType&)ret);\ 1672\ 1673 va_list args; \ 1674 va_start(args, methodID); \ 1675 JavaValue jvalue(Tag); \ 1676 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1677 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1678 va_end(args); \ 1679 ret = jvalue.get_##ResultType(); \ 1680 return ret;\ 1681JNI_END \ 1682\ 1683\ 1684JNI_ENTRY(ResultType, \ 1685 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1686 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1687\ 1688 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \ 1689 ResultType ret = 0;\ 1690 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1691 (const ResultType&)ret);\ 1692\ 1693 JavaValue jvalue(Tag); \ 1694 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1695 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1696 ret = jvalue.get_##ResultType(); \ 1697 return ret;\ 1698JNI_END \ 1699\ 1700\ 1701JNI_ENTRY(ResultType, \ 1702 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1703 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1704 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \ 1705 ResultType ret = 0;\ 1706 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1707 (const ResultType&)ret);\ 1708\ 1709 JavaValue jvalue(Tag); \ 1710 JNI_ArgumentPusherArray ap(methodID, args); \ 1711 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1712 ret = jvalue.get_##ResultType(); \ 1713 return ret;\ 1714JNI_END 1715 1716// the runtime type of subword integral basic types is integer 1717DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) 1718DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) 1719DEFINE_CALLMETHOD(jchar, Char, T_CHAR) 1720DEFINE_CALLMETHOD(jshort, Short, T_SHORT) 1721 1722DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) 1723DEFINE_CALLMETHOD(jint, Int, T_INT) 1724DEFINE_CALLMETHOD(jlong, Long, T_LONG) 1725DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) 1726DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) 1727 1728DT_VOID_RETURN_MARK_DECL(CallVoidMethod); 1729DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); 1730DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); 1731 1732#else /* USDT2 */ 1733 1734#define DEFINE_CALLMETHOD(ResultType, Result, Tag \ 1735 , EntryProbe, ReturnProbe) \ 1736\ 1737 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \ 1738 , ReturnProbe); \ 1739\ 1740JNI_ENTRY(ResultType, \ 1741 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1742 JNIWrapper("Call" XSTR(Result) "Method"); \ 1743\ 1744 EntryProbe; \ 1745 ResultType ret = 0;\ 1746 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1747 (const ResultType&)ret);\ 1748\ 1749 va_list args; \ 1750 va_start(args, methodID); \ 1751 JavaValue jvalue(Tag); \ 1752 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1753 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1754 va_end(args); \ 1755 ret = jvalue.get_##ResultType(); \ 1756 return ret;\ 1757JNI_END 1758 1759// the runtime type of subword integral basic types is integer 1760DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN 1761 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1762 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1763DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE 1764 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1765 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1766DEFINE_CALLMETHOD(jchar, Char, T_CHAR 1767 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1768 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1769DEFINE_CALLMETHOD(jshort, Short, T_SHORT 1770 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1771 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1772 1773DEFINE_CALLMETHOD(jobject, Object, T_OBJECT 1774 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1775 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1776DEFINE_CALLMETHOD(jint, Int, T_INT, 1777 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1778 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1779DEFINE_CALLMETHOD(jlong, Long, T_LONG 1780 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1781 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1782// Float and double probes don't return value because dtrace doesn't currently support it 1783DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT 1784 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1785 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1786DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE 1787 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1788 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1789 1790#define DEFINE_CALLMETHODV(ResultType, Result, Tag \ 1791 , EntryProbe, ReturnProbe) \ 1792\ 1793 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \ 1794 , ReturnProbe); \ 1795\ 1796JNI_ENTRY(ResultType, \ 1797 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1798 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1799\ 1800 EntryProbe;\ 1801 ResultType ret = 0;\ 1802 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1803 (const ResultType&)ret);\ 1804\ 1805 JavaValue jvalue(Tag); \ 1806 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1807 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1808 ret = jvalue.get_##ResultType(); \ 1809 return ret;\ 1810JNI_END 1811 1812// the runtime type of subword integral basic types is integer 1813DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN 1814 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1815 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1816DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE 1817 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1818 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1819DEFINE_CALLMETHODV(jchar, Char, T_CHAR 1820 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1821 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1822DEFINE_CALLMETHODV(jshort, Short, T_SHORT 1823 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1824 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1825 1826DEFINE_CALLMETHODV(jobject, Object, T_OBJECT 1827 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1828 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1829DEFINE_CALLMETHODV(jint, Int, T_INT, 1830 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1831 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1832DEFINE_CALLMETHODV(jlong, Long, T_LONG 1833 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1834 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1835// Float and double probes don't return value because dtrace doesn't currently support it 1836DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT 1837 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1838 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1839DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE 1840 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1841 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1842 1843#define DEFINE_CALLMETHODA(ResultType, Result, Tag \ 1844 , EntryProbe, ReturnProbe) \ 1845\ 1846 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \ 1847 , ReturnProbe); \ 1848\ 1849JNI_ENTRY(ResultType, \ 1850 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1851 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1852 EntryProbe; \ 1853 ResultType ret = 0;\ 1854 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1855 (const ResultType&)ret);\ 1856\ 1857 JavaValue jvalue(Tag); \ 1858 JNI_ArgumentPusherArray ap(methodID, args); \ 1859 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1860 ret = jvalue.get_##ResultType(); \ 1861 return ret;\ 1862JNI_END 1863 1864// the runtime type of subword integral basic types is integer 1865DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN 1866 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1867 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1868DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE 1869 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1870 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1871DEFINE_CALLMETHODA(jchar, Char, T_CHAR 1872 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1873 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1874DEFINE_CALLMETHODA(jshort, Short, T_SHORT 1875 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1876 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1877 1878DEFINE_CALLMETHODA(jobject, Object, T_OBJECT 1879 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1880 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1881DEFINE_CALLMETHODA(jint, Int, T_INT, 1882 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1883 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1884DEFINE_CALLMETHODA(jlong, Long, T_LONG 1885 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1886 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1887// Float and double probes don't return value because dtrace doesn't currently support it 1888DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT 1889 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1890 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1891DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE 1892 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1893 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1894 1895DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN()); 1896DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN()); 1897DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN()); 1898 1899#endif /* USDT2 */ 1900 1901JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) 1902 JNIWrapper("CallVoidMethod"); 1903#ifndef USDT2 1904 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); 1905#else /* USDT2 */ 1906 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY( 1907 env, obj, (uintptr_t) methodID); 1908#endif /* USDT2 */ 1909 DT_VOID_RETURN_MARK(CallVoidMethod); 1910 1911 va_list args; 1912 va_start(args, methodID); 1913 JavaValue jvalue(T_VOID); 1914 JNI_ArgumentPusherVaArg ap(methodID, args); 1915 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1916 va_end(args); 1917JNI_END 1918 1919 1920JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) 1921 JNIWrapper("CallVoidMethodV"); 1922#ifndef USDT2 1923 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); 1924#else /* USDT2 */ 1925 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY( 1926 env, obj, (uintptr_t) methodID); 1927#endif /* USDT2 */ 1928 DT_VOID_RETURN_MARK(CallVoidMethodV); 1929 1930 JavaValue jvalue(T_VOID); 1931 JNI_ArgumentPusherVaArg ap(methodID, args); 1932 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1933JNI_END 1934 1935 1936JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) 1937 JNIWrapper("CallVoidMethodA"); 1938#ifndef USDT2 1939 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); 1940#else /* USDT2 */ 1941 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY( 1942 env, obj, (uintptr_t) methodID); 1943#endif /* USDT2 */ 1944 DT_VOID_RETURN_MARK(CallVoidMethodA); 1945 1946 JavaValue jvalue(T_VOID); 1947 JNI_ArgumentPusherArray ap(methodID, args); 1948 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1949JNI_END 1950 1951 1952#ifndef USDT2 1953#define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ 1954\ 1955 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ 1956 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ 1957 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ 1958\ 1959JNI_ENTRY(ResultType, \ 1960 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1961 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1962\ 1963 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ 1964 ResultType ret;\ 1965 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1966 (const ResultType&)ret);\ 1967\ 1968 va_list args; \ 1969 va_start(args, methodID); \ 1970 JavaValue jvalue(Tag); \ 1971 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1972 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1973 va_end(args); \ 1974 ret = jvalue.get_##ResultType(); \ 1975 return ret;\ 1976JNI_END \ 1977\ 1978JNI_ENTRY(ResultType, \ 1979 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 1980 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ 1981 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ 1982 ResultType ret;\ 1983 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 1984 (const ResultType&)ret);\ 1985\ 1986 JavaValue jvalue(Tag); \ 1987 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1988 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1989 ret = jvalue.get_##ResultType(); \ 1990 return ret;\ 1991JNI_END \ 1992\ 1993JNI_ENTRY(ResultType, \ 1994 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 1995 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 1996 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ 1997 ResultType ret;\ 1998 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 1999 (const ResultType&)ret);\ 2000\ 2001 JavaValue jvalue(Tag); \ 2002 JNI_ArgumentPusherArray ap(methodID, args); \ 2003 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2004 ret = jvalue.get_##ResultType(); \ 2005 return ret;\ 2006JNI_END 2007 2008// the runtime type of subword integral basic types is integer 2009DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) 2010DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) 2011DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) 2012DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) 2013 2014DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) 2015DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) 2016DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) 2017DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) 2018DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) 2019 2020 2021DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); 2022DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); 2023DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); 2024 2025#else /* USDT2 */ 2026 2027#define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \ 2028 , EntryProbe, ReturnProbe) \ 2029\ 2030 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \ 2031 , ReturnProbe);\ 2032\ 2033JNI_ENTRY(ResultType, \ 2034 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 2035 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 2036\ 2037 EntryProbe;\ 2038 ResultType ret;\ 2039 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 2040 (const ResultType&)ret);\ 2041\ 2042 va_list args; \ 2043 va_start(args, methodID); \ 2044 JavaValue jvalue(Tag); \ 2045 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2046 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2047 va_end(args); \ 2048 ret = jvalue.get_##ResultType(); \ 2049 return ret;\ 2050JNI_END 2051 2052// the runtime type of subword integral basic types is integer 2053DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN 2054 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2055 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref)) 2056DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE 2057 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2058 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref)) 2059DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR 2060 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2061 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref)) 2062DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT 2063 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2064 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref)) 2065 2066DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT 2067 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2068 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref)) 2069DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT 2070 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2071 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref)) 2072DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG 2073 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2074// Float and double probes don't return value because dtrace doesn't currently support it 2075 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref)) 2076DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT 2077 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2078 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN()) 2079DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE 2080 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2081 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN()) 2082 2083#define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \ 2084 , EntryProbe, ReturnProbe) \ 2085\ 2086 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \ 2087 , ReturnProbe);\ 2088\ 2089JNI_ENTRY(ResultType, \ 2090 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2091 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \ 2092\ 2093 EntryProbe;\ 2094 ResultType ret;\ 2095 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2096 (const ResultType&)ret);\ 2097\ 2098 JavaValue jvalue(Tag); \ 2099 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2100 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2101 ret = jvalue.get_##ResultType(); \ 2102 return ret;\ 2103JNI_END 2104 2105// the runtime type of subword integral basic types is integer 2106DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN 2107 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2108 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref)) 2109DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE 2110 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2111 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref)) 2112DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR 2113 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2114 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref)) 2115DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT 2116 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2117 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref)) 2118 2119DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT 2120 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2121 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref)) 2122DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT 2123 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2124 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref)) 2125DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG 2126 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2127// Float and double probes don't return value because dtrace doesn't currently support it 2128 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref)) 2129DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT 2130 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2131 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN()) 2132DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE 2133 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2134 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN()) 2135 2136#define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \ 2137 , EntryProbe, ReturnProbe) \ 2138\ 2139 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \ 2140 , ReturnProbe);\ 2141\ 2142JNI_ENTRY(ResultType, \ 2143 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2144 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2145\ 2146 EntryProbe;\ 2147 ResultType ret;\ 2148 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2149 (const ResultType&)ret);\ 2150\ 2151 JavaValue jvalue(Tag); \ 2152 JNI_ArgumentPusherArray ap(methodID, args); \ 2153 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2154 ret = jvalue.get_##ResultType(); \ 2155 return ret;\ 2156JNI_END 2157 2158// the runtime type of subword integral basic types is integer 2159DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN 2160 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2161 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref)) 2162DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE 2163 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2164 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref)) 2165DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR 2166 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2167 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref)) 2168DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT 2169 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2170 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref)) 2171 2172DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT 2173 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2174 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref)) 2175DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT 2176 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2177 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref)) 2178DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG 2179 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2180// Float and double probes don't return value because dtrace doesn't currently support it 2181 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref)) 2182DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT 2183 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2184 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN()) 2185DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE 2186 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2187 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN()) 2188 2189DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod 2190 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN()); 2191DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV 2192 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN()); 2193DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA 2194 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN()); 2195#endif /* USDT2 */ 2196 2197JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) 2198 JNIWrapper("CallNonvirtualVoidMethod"); 2199 2200#ifndef USDT2 2201 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, 2202 env, obj, cls, methodID); 2203#else /* USDT2 */ 2204 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY( 2205 env, obj, cls, (uintptr_t) methodID); 2206#endif /* USDT2 */ 2207 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); 2208 2209 va_list args; 2210 va_start(args, methodID); 2211 JavaValue jvalue(T_VOID); 2212 JNI_ArgumentPusherVaArg ap(methodID, args); 2213 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2214 va_end(args); 2215JNI_END 2216 2217 2218JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) 2219 JNIWrapper("CallNonvirtualVoidMethodV"); 2220 2221#ifndef USDT2 2222 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, 2223 env, obj, cls, methodID); 2224#else /* USDT2 */ 2225 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY( 2226 env, obj, cls, (uintptr_t) methodID); 2227#endif /* USDT2 */ 2228 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); 2229 2230 JavaValue jvalue(T_VOID); 2231 JNI_ArgumentPusherVaArg ap(methodID, args); 2232 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2233JNI_END 2234 2235 2236JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) 2237 JNIWrapper("CallNonvirtualVoidMethodA"); 2238#ifndef USDT2 2239 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, 2240 env, obj, cls, methodID); 2241#else /* USDT2 */ 2242 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY( 2243 env, obj, cls, (uintptr_t) methodID); 2244#endif /* USDT2 */ 2245 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); 2246 JavaValue jvalue(T_VOID); 2247 JNI_ArgumentPusherArray ap(methodID, args); 2248 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2249JNI_END 2250 2251 2252#ifndef USDT2 2253#define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ 2254\ 2255 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ 2256 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ 2257 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ 2258\ 2259JNI_ENTRY(ResultType, \ 2260 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2261 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2262\ 2263 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ 2264 ResultType ret = 0;\ 2265 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2266 (const ResultType&)ret);\ 2267\ 2268 va_list args; \ 2269 va_start(args, methodID); \ 2270 JavaValue jvalue(Tag); \ 2271 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2272 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2273 va_end(args); \ 2274 ret = jvalue.get_##ResultType(); \ 2275 return ret;\ 2276JNI_END \ 2277\ 2278JNI_ENTRY(ResultType, \ 2279 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2280 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2281 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ 2282 ResultType ret = 0;\ 2283 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2284 (const ResultType&)ret);\ 2285\ 2286 JavaValue jvalue(Tag); \ 2287 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2288 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2289 ret = jvalue.get_##ResultType(); \ 2290 return ret;\ 2291JNI_END \ 2292\ 2293JNI_ENTRY(ResultType, \ 2294 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2295 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2296 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ 2297 ResultType ret = 0;\ 2298 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2299 (const ResultType&)ret);\ 2300\ 2301 JavaValue jvalue(Tag); \ 2302 JNI_ArgumentPusherArray ap(methodID, args); \ 2303 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2304 ret = jvalue.get_##ResultType(); \ 2305 return ret;\ 2306JNI_END 2307 2308// the runtime type of subword integral basic types is integer 2309DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) 2310DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) 2311DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) 2312DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) 2313 2314DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) 2315DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) 2316DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) 2317DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) 2318DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) 2319 2320 2321DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); 2322DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); 2323DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); 2324 2325#else /* USDT2 */ 2326 2327#define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \ 2328 , EntryProbe, ResultProbe) \ 2329\ 2330 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \ 2331 , ResultProbe); \ 2332\ 2333JNI_ENTRY(ResultType, \ 2334 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2335 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2336\ 2337 EntryProbe; \ 2338 ResultType ret = 0;\ 2339 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2340 (const ResultType&)ret);\ 2341\ 2342 va_list args; \ 2343 va_start(args, methodID); \ 2344 JavaValue jvalue(Tag); \ 2345 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2346 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2347 va_end(args); \ 2348 ret = jvalue.get_##ResultType(); \ 2349 return ret;\ 2350JNI_END 2351 2352// the runtime type of subword integral basic types is integer 2353DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN 2354 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2355 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref)); 2356DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE 2357 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2358 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref)); 2359DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR 2360 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2361 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref)); 2362DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT 2363 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2364 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref)); 2365 2366DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT 2367 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2368 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref)); 2369DEFINE_CALLSTATICMETHOD(jint, Int, T_INT 2370 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2371 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref)); 2372DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG 2373 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2374 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref)); 2375// Float and double probes don't return value because dtrace doesn't currently support it 2376DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT 2377 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2378 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN()); 2379DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE 2380 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2381 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN()); 2382 2383#define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \ 2384 , EntryProbe, ResultProbe) \ 2385\ 2386 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \ 2387 , ResultProbe); \ 2388\ 2389JNI_ENTRY(ResultType, \ 2390 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2391 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2392\ 2393 EntryProbe; \ 2394 ResultType ret = 0;\ 2395 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2396 (const ResultType&)ret);\ 2397\ 2398 JavaValue jvalue(Tag); \ 2399 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2400 /* Make sure class is initialized before trying to invoke its method */ \ 2401 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \ 2402 k()->initialize(CHECK_0); \ 2403 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2404 va_end(args); \ 2405 ret = jvalue.get_##ResultType(); \ 2406 return ret;\ 2407JNI_END 2408 2409// the runtime type of subword integral basic types is integer 2410DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN 2411 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2412 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref)); 2413DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE 2414 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2415 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref)); 2416DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR 2417 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2418 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref)); 2419DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT 2420 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2421 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref)); 2422 2423DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT 2424 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2425 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref)); 2426DEFINE_CALLSTATICMETHODV(jint, Int, T_INT 2427 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2428 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref)); 2429DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG 2430 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2431 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref)); 2432// Float and double probes don't return value because dtrace doesn't currently support it 2433DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT 2434 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2435 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN()); 2436DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE 2437 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2438 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN()); 2439 2440#define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \ 2441 , EntryProbe, ResultProbe) \ 2442\ 2443 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \ 2444 , ResultProbe); \ 2445\ 2446JNI_ENTRY(ResultType, \ 2447 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2448 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2449\ 2450 EntryProbe; \ 2451 ResultType ret = 0;\ 2452 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2453 (const ResultType&)ret);\ 2454\ 2455 JavaValue jvalue(Tag); \ 2456 JNI_ArgumentPusherArray ap(methodID, args); \ 2457 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2458 ret = jvalue.get_##ResultType(); \ 2459 return ret;\ 2460JNI_END 2461 2462// the runtime type of subword integral basic types is integer 2463DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN 2464 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2465 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref)); 2466DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE 2467 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2468 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref)); 2469DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR 2470 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2471 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref)); 2472DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT 2473 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2474 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref)); 2475 2476DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT 2477 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2478 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref)); 2479DEFINE_CALLSTATICMETHODA(jint, Int, T_INT 2480 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2481 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref)); 2482DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG 2483 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2484 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref)); 2485// Float and double probes don't return value because dtrace doesn't currently support it 2486DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT 2487 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2488 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN()); 2489DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE 2490 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2491 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN()); 2492 2493DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod 2494 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN()); 2495DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV 2496 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN()); 2497DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA 2498 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN()); 2499#endif /* USDT2 */ 2500 2501JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) 2502 JNIWrapper("CallStaticVoidMethod"); 2503#ifndef USDT2 2504 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); 2505#else /* USDT2 */ 2506 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY( 2507 env, cls, (uintptr_t) methodID); 2508#endif /* USDT2 */ 2509 DT_VOID_RETURN_MARK(CallStaticVoidMethod); 2510 2511 va_list args; 2512 va_start(args, methodID); 2513 JavaValue jvalue(T_VOID); 2514 JNI_ArgumentPusherVaArg ap(methodID, args); 2515 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2516 va_end(args); 2517JNI_END 2518 2519 2520JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) 2521 JNIWrapper("CallStaticVoidMethodV"); 2522#ifndef USDT2 2523 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); 2524#else /* USDT2 */ 2525 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY( 2526 env, cls, (uintptr_t) methodID); 2527#endif /* USDT2 */ 2528 DT_VOID_RETURN_MARK(CallStaticVoidMethodV); 2529 2530 JavaValue jvalue(T_VOID); 2531 JNI_ArgumentPusherVaArg ap(methodID, args); 2532 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2533JNI_END 2534 2535 2536JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) 2537 JNIWrapper("CallStaticVoidMethodA"); 2538#ifndef USDT2 2539 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); 2540#else /* USDT2 */ 2541 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY( 2542 env, cls, (uintptr_t) methodID); 2543#endif /* USDT2 */ 2544 DT_VOID_RETURN_MARK(CallStaticVoidMethodA); 2545 2546 JavaValue jvalue(T_VOID); 2547 JNI_ArgumentPusherArray ap(methodID, args); 2548 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2549JNI_END 2550 2551 2552// 2553// Accessing Fields 2554// 2555 2556 2557#ifndef USDT2 2558DT_RETURN_MARK_DECL(GetFieldID, jfieldID); 2559#else /* USDT2 */ 2560DT_RETURN_MARK_DECL(GetFieldID, jfieldID 2561 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref)); 2562#endif /* USDT2 */ 2563 2564JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, 2565 const char *name, const char *sig)) 2566 JNIWrapper("GetFieldID"); 2567#ifndef USDT2 2568 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); 2569#else /* USDT2 */ 2570 HOTSPOT_JNI_GETFIELDID_ENTRY( 2571 env, clazz, (char *) name, (char *) sig); 2572#endif /* USDT2 */ 2573 jfieldID ret = 0; 2574 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); 2575 2576 // The class should have been loaded (we have an instance of the class 2577 // passed in) so the field and signature should already be in the symbol 2578 // table. If they're not there, the field doesn't exist. 2579 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2580 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2581 if (fieldname == NULL || signame == NULL) { 2582 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2583 } 2584 KlassHandle k(THREAD, 2585 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2586 // Make sure class is initialized before handing id's out to fields 2587 k()->initialize(CHECK_NULL); 2588 2589 fieldDescriptor fd; 2590 if (!k()->oop_is_instance() || 2591 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) { 2592 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2593 } 2594 2595 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop 2596 // It may also have hash bits for k, if VerifyJNIFields is turned on. 2597 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); 2598 return ret; 2599JNI_END 2600 2601 2602JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) 2603 JNIWrapper("GetObjectField"); 2604#ifndef USDT2 2605 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); 2606#else /* USDT2 */ 2607 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY( 2608 env, obj, (uintptr_t) fieldID); 2609#endif /* USDT2 */ 2610 oop o = JNIHandles::resolve_non_null(obj); 2611 Klass* k = o->klass(); 2612 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2613 // Keep JVMTI addition small and only check enabled flag here. 2614 // jni_GetField_probe() assumes that is okay to create handles. 2615 if (JvmtiExport::should_post_field_access()) { 2616 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); 2617 } 2618 jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); 2619#if INCLUDE_ALL_GCS 2620 // If G1 is enabled and we are accessing the value of the referent 2621 // field in a reference object then we need to register a non-null 2622 // referent with the SATB barrier. 2623 if (UseG1GC) { 2624 bool needs_barrier = false; 2625 2626 if (ret != NULL && 2627 offset == java_lang_ref_Reference::referent_offset && 2628 InstanceKlass::cast(k)->reference_type() != REF_NONE) { 2629 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); 2630 needs_barrier = true; 2631 } 2632 2633 if (needs_barrier) { 2634 oop referent = JNIHandles::resolve(ret); 2635 G1SATBCardTableModRefBS::enqueue(referent); 2636 } 2637 } 2638#endif // INCLUDE_ALL_GCS 2639#ifndef USDT2 2640 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); 2641#else /* USDT2 */ 2642HOTSPOT_JNI_GETOBJECTFIELD_RETURN( 2643 ret); 2644#endif /* USDT2 */ 2645 return ret; 2646JNI_END 2647 2648 2649#ifndef USDT2 2650#define DEFINE_GETFIELD(Return,Fieldname,Result) \ 2651\ 2652 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ 2653\ 2654JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2655 JNIWrapper("Get" XSTR(Result) "Field"); \ 2656\ 2657 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ 2658 Return ret = 0;\ 2659 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2660\ 2661 oop o = JNIHandles::resolve_non_null(obj); \ 2662 Klass* k = o->klass(); \ 2663 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2664 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2665 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2666 /* and creates a ResetNoHandleMark. */ \ 2667 if (JvmtiExport::should_post_field_access()) { \ 2668 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2669 } \ 2670 ret = o->Fieldname##_field(offset); \ 2671 return ret; \ 2672JNI_END 2673 2674DEFINE_GETFIELD(jboolean, bool, Boolean) 2675DEFINE_GETFIELD(jbyte, byte, Byte) 2676DEFINE_GETFIELD(jchar, char, Char) 2677DEFINE_GETFIELD(jshort, short, Short) 2678DEFINE_GETFIELD(jint, int, Int) 2679DEFINE_GETFIELD(jlong, long, Long) 2680DEFINE_GETFIELD(jfloat, float, Float) 2681DEFINE_GETFIELD(jdouble, double, Double) 2682 2683#else /* USDT2 */ 2684 2685#define DEFINE_GETFIELD(Return,Fieldname,Result \ 2686 , EntryProbe, ReturnProbe) \ 2687\ 2688 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \ 2689 , ReturnProbe); \ 2690\ 2691JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2692 JNIWrapper("Get" XSTR(Result) "Field"); \ 2693\ 2694 EntryProbe; \ 2695 Return ret = 0;\ 2696 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2697\ 2698 oop o = JNIHandles::resolve_non_null(obj); \ 2699 Klass* k = o->klass(); \ 2700 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2701 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2702 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2703 /* and creates a ResetNoHandleMark. */ \ 2704 if (JvmtiExport::should_post_field_access()) { \ 2705 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2706 } \ 2707 ret = o->Fieldname##_field(offset); \ 2708 return ret; \ 2709JNI_END 2710 2711DEFINE_GETFIELD(jboolean, bool, Boolean 2712 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2713 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref)) 2714DEFINE_GETFIELD(jbyte, byte, Byte 2715 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2716 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref)) 2717DEFINE_GETFIELD(jchar, char, Char 2718 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2719 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref)) 2720DEFINE_GETFIELD(jshort, short, Short 2721 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2722 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref)) 2723DEFINE_GETFIELD(jint, int, Int 2724 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2725 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref)) 2726DEFINE_GETFIELD(jlong, long, Long 2727 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2728 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref)) 2729// Float and double probes don't return value because dtrace doesn't currently support it 2730DEFINE_GETFIELD(jfloat, float, Float 2731 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2732 HOTSPOT_JNI_GETFLOATFIELD_RETURN()) 2733DEFINE_GETFIELD(jdouble, double, Double 2734 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2735 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN()) 2736#endif /* USDT2 */ 2737 2738address jni_GetBooleanField_addr() { 2739 return (address)jni_GetBooleanField; 2740} 2741address jni_GetByteField_addr() { 2742 return (address)jni_GetByteField; 2743} 2744address jni_GetCharField_addr() { 2745 return (address)jni_GetCharField; 2746} 2747address jni_GetShortField_addr() { 2748 return (address)jni_GetShortField; 2749} 2750address jni_GetIntField_addr() { 2751 return (address)jni_GetIntField; 2752} 2753address jni_GetLongField_addr() { 2754 return (address)jni_GetLongField; 2755} 2756address jni_GetFloatField_addr() { 2757 return (address)jni_GetFloatField; 2758} 2759address jni_GetDoubleField_addr() { 2760 return (address)jni_GetDoubleField; 2761} 2762 2763JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) 2764 JNIWrapper("SetObjectField"); 2765#ifndef USDT2 2766 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); 2767#else /* USDT2 */ 2768 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY( 2769 env, obj, (uintptr_t) fieldID, value); 2770#endif /* USDT2 */ 2771 oop o = JNIHandles::resolve_non_null(obj); 2772 Klass* k = o->klass(); 2773 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2774 // Keep JVMTI addition small and only check enabled flag here. 2775 // jni_SetField_probe_nh() assumes that is not okay to create handles 2776 // and creates a ResetNoHandleMark. 2777 if (JvmtiExport::should_post_field_modification()) { 2778 jvalue field_value; 2779 field_value.l = value; 2780 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); 2781 } 2782 o->obj_field_put(offset, JNIHandles::resolve(value)); 2783#ifndef USDT2 2784 DTRACE_PROBE(hotspot_jni, SetObjectField__return); 2785#else /* USDT2 */ 2786 HOTSPOT_JNI_SETOBJECTFIELD_RETURN( 2787); 2788#endif /* USDT2 */ 2789JNI_END 2790 2791#ifndef USDT2 2792#define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ 2793\ 2794JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2795 JNIWrapper("Set" XSTR(Result) "Field"); \ 2796\ 2797 FP_SELECT_##Result( \ 2798 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \ 2799 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \ 2800\ 2801 oop o = JNIHandles::resolve_non_null(obj); \ 2802 Klass* k = o->klass(); \ 2803 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2804 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2805 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2806 /* and creates a ResetNoHandleMark. */ \ 2807 if (JvmtiExport::should_post_field_modification()) { \ 2808 jvalue field_value; \ 2809 field_value.unionType = value; \ 2810 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2811 } \ 2812 o->Fieldname##_field_put(offset, value); \ 2813 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ 2814JNI_END 2815 2816DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) 2817DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) 2818DEFINE_SETFIELD(jchar, char, Char, 'C', c) 2819DEFINE_SETFIELD(jshort, short, Short, 'S', s) 2820DEFINE_SETFIELD(jint, int, Int, 'I', i) 2821DEFINE_SETFIELD(jlong, long, Long, 'J', j) 2822DEFINE_SETFIELD(jfloat, float, Float, 'F', f) 2823DEFINE_SETFIELD(jdouble, double, Double, 'D', d) 2824 2825#else /* USDT2 */ 2826 2827#define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \ 2828 , EntryProbe, ReturnProbe) \ 2829\ 2830JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2831 JNIWrapper("Set" XSTR(Result) "Field"); \ 2832\ 2833 EntryProbe; \ 2834\ 2835 oop o = JNIHandles::resolve_non_null(obj); \ 2836 Klass* k = o->klass(); \ 2837 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2838 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2839 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2840 /* and creates a ResetNoHandleMark. */ \ 2841 if (JvmtiExport::should_post_field_modification()) { \ 2842 jvalue field_value; \ 2843 field_value.unionType = value; \ 2844 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2845 } \ 2846 o->Fieldname##_field_put(offset, value); \ 2847 ReturnProbe; \ 2848JNI_END 2849 2850DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z 2851 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2852 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 2853DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b 2854 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2855 HOTSPOT_JNI_SETBYTEFIELD_RETURN()) 2856DEFINE_SETFIELD(jchar, char, Char, 'C', c 2857 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2858 HOTSPOT_JNI_SETCHARFIELD_RETURN()) 2859DEFINE_SETFIELD(jshort, short, Short, 'S', s 2860 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2861 HOTSPOT_JNI_SETSHORTFIELD_RETURN()) 2862DEFINE_SETFIELD(jint, int, Int, 'I', i 2863 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2864 HOTSPOT_JNI_SETINTFIELD_RETURN()) 2865DEFINE_SETFIELD(jlong, long, Long, 'J', j 2866 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2867 HOTSPOT_JNI_SETLONGFIELD_RETURN()) 2868// Float and double probes don't return value because dtrace doesn't currently support it 2869DEFINE_SETFIELD(jfloat, float, Float, 'F', f 2870 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2871 HOTSPOT_JNI_SETFLOATFIELD_RETURN()) 2872DEFINE_SETFIELD(jdouble, double, Double, 'D', d 2873 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2874 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN()) 2875#endif /* USDT2 */ 2876 2877#ifndef USDT2 2878DT_RETURN_MARK_DECL(ToReflectedField, jobject); 2879#else /* USDT2 */ 2880DT_RETURN_MARK_DECL(ToReflectedField, jobject 2881 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref)); 2882#endif /* USDT2 */ 2883 2884JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) 2885 JNIWrapper("ToReflectedField"); 2886#ifndef USDT2 2887 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, 2888 env, cls, fieldID, isStatic); 2889#else /* USDT2 */ 2890 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY( 2891 env, cls, (uintptr_t) fieldID, isStatic); 2892#endif /* USDT2 */ 2893 jobject ret = NULL; 2894 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); 2895 2896 fieldDescriptor fd; 2897 bool found = false; 2898 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); 2899 2900 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); 2901 2902 if (isStatic) { 2903 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*. 2904 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2905 assert(id->is_static_field_id(), "invalid static field id"); 2906 found = id->find_local_field(&fd); 2907 } else { 2908 // Non-static field. The fieldID is really the offset of the field within the instanceOop. 2909 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2910 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); 2911 } 2912 assert(found, "bad fieldID passed into jni_ToReflectedField"); 2913 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); 2914 ret = JNIHandles::make_local(env, reflected); 2915 return ret; 2916JNI_END 2917 2918 2919// 2920// Accessing Static Fields 2921// 2922#ifndef USDT2 2923DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); 2924#else /* USDT2 */ 2925DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID 2926 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref)); 2927#endif /* USDT2 */ 2928 2929JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, 2930 const char *name, const char *sig)) 2931 JNIWrapper("GetStaticFieldID"); 2932#ifndef USDT2 2933 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); 2934#else /* USDT2 */ 2935 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY( 2936 env, clazz, (char *) name, (char *) sig); 2937#endif /* USDT2 */ 2938 jfieldID ret = NULL; 2939 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); 2940 2941 // The class should have been loaded (we have an instance of the class 2942 // passed in) so the field and signature should already be in the symbol 2943 // table. If they're not there, the field doesn't exist. 2944 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2945 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2946 if (fieldname == NULL || signame == NULL) { 2947 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2948 } 2949 KlassHandle k(THREAD, 2950 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2951 // Make sure class is initialized before handing id's out to static fields 2952 k()->initialize(CHECK_NULL); 2953 2954 fieldDescriptor fd; 2955 if (!k()->oop_is_instance() || 2956 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) { 2957 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2958 } 2959 2960 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 2961 JNIid* id = fd.field_holder()->jni_id_for(fd.offset()); 2962 debug_only(id->set_is_static_field_id();) 2963 2964 debug_only(id->verify(fd.field_holder())); 2965 2966 ret = jfieldIDWorkaround::to_static_jfieldID(id); 2967 return ret; 2968JNI_END 2969 2970 2971JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) 2972 JNIWrapper("GetStaticObjectField"); 2973#ifndef USDT2 2974 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); 2975#else /* USDT2 */ 2976 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY( 2977 env, clazz, (uintptr_t) fieldID); 2978#endif /* USDT2 */ 2979#if INCLUDE_JNI_CHECK 2980 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);) 2981#endif // INCLUDE_JNI_CHECK 2982 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2983 assert(id->is_static_field_id(), "invalid static field id"); 2984 // Keep JVMTI addition small and only check enabled flag here. 2985 // jni_GetField_probe() assumes that is okay to create handles. 2986 if (JvmtiExport::should_post_field_access()) { 2987 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); 2988 } 2989 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset())); 2990#ifndef USDT2 2991 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); 2992#else /* USDT2 */ 2993 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN( 2994 ret); 2995#endif /* USDT2 */ 2996 return ret; 2997JNI_END 2998 2999#ifndef USDT2 3000#define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ 3001\ 3002 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ 3003\ 3004JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3005 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3006 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ 3007 Return ret = 0;\ 3008 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3009 (const Return&)ret);\ 3010 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3011 assert(id->is_static_field_id(), "invalid static field id"); \ 3012 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3013 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3014 if (JvmtiExport::should_post_field_access()) { \ 3015 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3016 } \ 3017 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3018 return ret;\ 3019JNI_END 3020 3021DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) 3022DEFINE_GETSTATICFIELD(jbyte, byte, Byte) 3023DEFINE_GETSTATICFIELD(jchar, char, Char) 3024DEFINE_GETSTATICFIELD(jshort, short, Short) 3025DEFINE_GETSTATICFIELD(jint, int, Int) 3026DEFINE_GETSTATICFIELD(jlong, long, Long) 3027DEFINE_GETSTATICFIELD(jfloat, float, Float) 3028DEFINE_GETSTATICFIELD(jdouble, double, Double) 3029 3030#else /* USDT2 */ 3031 3032#define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \ 3033 , EntryProbe, ReturnProbe) \ 3034\ 3035 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \ 3036 , ReturnProbe); \ 3037\ 3038JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3039 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3040 EntryProbe; \ 3041 Return ret = 0;\ 3042 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3043 (const Return&)ret);\ 3044 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3045 assert(id->is_static_field_id(), "invalid static field id"); \ 3046 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3047 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3048 if (JvmtiExport::should_post_field_access()) { \ 3049 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3050 } \ 3051 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3052 return ret;\ 3053JNI_END 3054 3055DEFINE_GETSTATICFIELD(jboolean, bool, Boolean 3056 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref)) 3057DEFINE_GETSTATICFIELD(jbyte, byte, Byte 3058 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) ) 3059DEFINE_GETSTATICFIELD(jchar, char, Char 3060 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) ) 3061DEFINE_GETSTATICFIELD(jshort, short, Short 3062 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) ) 3063DEFINE_GETSTATICFIELD(jint, int, Int 3064 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) ) 3065DEFINE_GETSTATICFIELD(jlong, long, Long 3066 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) ) 3067// Float and double probes don't return value because dtrace doesn't currently support it 3068DEFINE_GETSTATICFIELD(jfloat, float, Float 3069 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() ) 3070DEFINE_GETSTATICFIELD(jdouble, double, Double 3071 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() ) 3072#endif /* USDT2 */ 3073 3074JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) 3075 JNIWrapper("SetStaticObjectField"); 3076#ifndef USDT2 3077 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); 3078#else /* USDT2 */ 3079 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY( 3080 env, clazz, (uintptr_t) fieldID, value); 3081#endif /* USDT2 */ 3082 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3083 assert(id->is_static_field_id(), "invalid static field id"); 3084 // Keep JVMTI addition small and only check enabled flag here. 3085 // jni_SetField_probe() assumes that is okay to create handles. 3086 if (JvmtiExport::should_post_field_modification()) { 3087 jvalue field_value; 3088 field_value.l = value; 3089 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); 3090 } 3091 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value)); 3092#ifndef USDT2 3093 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); 3094#else /* USDT2 */ 3095 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN( 3096 ); 3097#endif /* USDT2 */ 3098JNI_END 3099 3100 3101#ifndef USDT2 3102#define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ 3103\ 3104JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3105 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3106 FP_SELECT_##Result( \ 3107 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \ 3108 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \ 3109\ 3110 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3111 assert(id->is_static_field_id(), "invalid static field id"); \ 3112 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3113 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3114 if (JvmtiExport::should_post_field_modification()) { \ 3115 jvalue field_value; \ 3116 field_value.unionType = value; \ 3117 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3118 } \ 3119 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3120 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\ 3121JNI_END 3122 3123DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z) 3124DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b) 3125DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c) 3126DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s) 3127DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i) 3128DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j) 3129DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f) 3130DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d) 3131 3132#else /* USDT2 */ 3133 3134#define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \ 3135 , EntryProbe, ReturnProbe) \ 3136\ 3137JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3138 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3139 EntryProbe; \ 3140\ 3141 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3142 assert(id->is_static_field_id(), "invalid static field id"); \ 3143 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3144 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3145 if (JvmtiExport::should_post_field_modification()) { \ 3146 jvalue field_value; \ 3147 field_value.unionType = value; \ 3148 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3149 } \ 3150 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3151 ReturnProbe;\ 3152JNI_END 3153 3154DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z 3155 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value), 3156 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 3157DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b 3158 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3159 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN()) 3160DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c 3161 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3162 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN()) 3163DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s 3164 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3165 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN()) 3166DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i 3167 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3168 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN()) 3169DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j 3170 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3171 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN()) 3172// Float and double probes don't return value because dtrace doesn't currently support it 3173DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f 3174 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3175 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN()) 3176DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d 3177 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3178 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN()) 3179#endif /* USDT2 */ 3180 3181// 3182// String Operations 3183// 3184 3185// Unicode Interface 3186 3187#ifndef USDT2 3188DT_RETURN_MARK_DECL(NewString, jstring); 3189#else /* USDT2 */ 3190DT_RETURN_MARK_DECL(NewString, jstring 3191 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref)); 3192#endif /* USDT2 */ 3193 3194JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len)) 3195 JNIWrapper("NewString"); 3196#ifndef USDT2 3197 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len); 3198#else /* USDT2 */ 3199 HOTSPOT_JNI_NEWSTRING_ENTRY( 3200 env, (uint16_t *) unicodeChars, len); 3201#endif /* USDT2 */ 3202 jstring ret = NULL; 3203 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret); 3204 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL); 3205 ret = (jstring) JNIHandles::make_local(env, string); 3206 return ret; 3207JNI_END 3208 3209 3210JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string)) 3211 JNIWrapper("GetStringLength"); 3212#ifndef USDT2 3213 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string); 3214#else /* USDT2 */ 3215 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY( 3216 env, string); 3217#endif /* USDT2 */ 3218 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string)); 3219#ifndef USDT2 3220 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret); 3221#else /* USDT2 */ 3222 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN( 3223 ret); 3224#endif /* USDT2 */ 3225 return ret; 3226JNI_END 3227 3228 3229JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars( 3230 JNIEnv *env, jstring string, jboolean *isCopy)) 3231 JNIWrapper("GetStringChars"); 3232#ifndef USDT2 3233 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy); 3234#else /* USDT2 */ 3235 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY( 3236 env, string, (uintptr_t *) isCopy); 3237#endif /* USDT2 */ 3238 //%note jni_5 3239 if (isCopy != NULL) { 3240 *isCopy = JNI_TRUE; 3241 } 3242 oop s = JNIHandles::resolve_non_null(string); 3243 int s_len = java_lang_String::length(s); 3244 typeArrayOop s_value = java_lang_String::value(s); 3245 int s_offset = java_lang_String::offset(s); 3246 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination 3247 if (s_len > 0) { 3248 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len); 3249 } 3250 buf[s_len] = 0; 3251#ifndef USDT2 3252 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf); 3253#else /* USDT2 */ 3254 HOTSPOT_JNI_GETSTRINGCHARS_RETURN( 3255 buf); 3256#endif /* USDT2 */ 3257 return buf; 3258JNI_END 3259 3260 3261JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)) 3262 JNIWrapper("ReleaseStringChars"); 3263#ifndef USDT2 3264 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars); 3265#else /* USDT2 */ 3266 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY( 3267 env, str, (uint16_t *) chars); 3268#endif /* USDT2 */ 3269 //%note jni_6 3270 if (chars != NULL) { 3271 // Since String objects are supposed to be immutable, don't copy any 3272 // new data back. A bad user will have to go after the char array. 3273 FreeHeap((void*) chars); 3274 } 3275#ifndef USDT2 3276 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return); 3277#else /* USDT2 */ 3278 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN( 3279); 3280#endif /* USDT2 */ 3281JNI_END 3282 3283 3284// UTF Interface 3285 3286#ifndef USDT2 3287DT_RETURN_MARK_DECL(NewStringUTF, jstring); 3288#else /* USDT2 */ 3289DT_RETURN_MARK_DECL(NewStringUTF, jstring 3290 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref)); 3291#endif /* USDT2 */ 3292 3293JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes)) 3294 JNIWrapper("NewStringUTF"); 3295#ifndef USDT2 3296 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes); 3297#else /* USDT2 */ 3298 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY( 3299 env, (char *) bytes); 3300#endif /* USDT2 */ 3301 jstring ret; 3302 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret); 3303 3304 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL); 3305 ret = (jstring) JNIHandles::make_local(env, result); 3306 return ret; 3307JNI_END 3308 3309 3310JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string)) 3311 JNIWrapper("GetStringUTFLength"); 3312#ifndef USDT2 3313 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string); 3314#else /* USDT2 */ 3315 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY( 3316 env, string); 3317#endif /* USDT2 */ 3318 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string)); 3319#ifndef USDT2 3320 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret); 3321#else /* USDT2 */ 3322 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN( 3323 ret); 3324#endif /* USDT2 */ 3325 return ret; 3326JNI_END 3327 3328 3329JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)) 3330 JNIWrapper("GetStringUTFChars"); 3331#ifndef USDT2 3332 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy); 3333#else /* USDT2 */ 3334 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY( 3335 env, string, (uintptr_t *) isCopy); 3336#endif /* USDT2 */ 3337 oop java_string = JNIHandles::resolve_non_null(string); 3338 size_t length = java_lang_String::utf8_length(java_string); 3339 char* result = AllocateHeap(length + 1, mtInternal); 3340 java_lang_String::as_utf8_string(java_string, result, (int) length + 1); 3341 if (isCopy != NULL) *isCopy = JNI_TRUE; 3342#ifndef USDT2 3343 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result); 3344#else /* USDT2 */ 3345 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN( 3346 result); 3347#endif /* USDT2 */ 3348 return result; 3349JNI_END 3350 3351 3352JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars)) 3353 JNIWrapper("ReleaseStringUTFChars"); 3354#ifndef USDT2 3355 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars); 3356#else /* USDT2 */ 3357 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY( 3358 env, str, (char *) chars); 3359#endif /* USDT2 */ 3360 if (chars != NULL) { 3361 FreeHeap((char*) chars); 3362 } 3363#ifndef USDT2 3364 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return); 3365#else /* USDT2 */ 3366HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN( 3367); 3368#endif /* USDT2 */ 3369JNI_END 3370 3371 3372JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array)) 3373 JNIWrapper("GetArrayLength"); 3374#ifndef USDT2 3375 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array); 3376#else /* USDT2 */ 3377 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY( 3378 env, array); 3379#endif /* USDT2 */ 3380 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array)); 3381 assert(a->is_array(), "must be array"); 3382 jsize ret = a->length(); 3383#ifndef USDT2 3384 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret); 3385#else /* USDT2 */ 3386 HOTSPOT_JNI_GETARRAYLENGTH_RETURN( 3387 ret); 3388#endif /* USDT2 */ 3389 return ret; 3390JNI_END 3391 3392 3393// 3394// Object Array Operations 3395// 3396 3397#ifndef USDT2 3398DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray); 3399#else /* USDT2 */ 3400DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray 3401 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref)); 3402#endif /* USDT2 */ 3403 3404JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement)) 3405 JNIWrapper("NewObjectArray"); 3406#ifndef USDT2 3407 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement); 3408#else /* USDT2 */ 3409 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY( 3410 env, length, elementClass, initialElement); 3411#endif /* USDT2 */ 3412 jobjectArray ret = NULL; 3413 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret); 3414 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass))); 3415 Klass* ako = ek()->array_klass(CHECK_NULL); 3416 KlassHandle ak = KlassHandle(THREAD, ako); 3417 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL); 3418 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL); 3419 oop initial_value = JNIHandles::resolve(initialElement); 3420 if (initial_value != NULL) { // array already initialized with NULL 3421 for (int index = 0; index < length; index++) { 3422 result->obj_at_put(index, initial_value); 3423 } 3424 } 3425 ret = (jobjectArray) JNIHandles::make_local(env, result); 3426 return ret; 3427JNI_END 3428 3429#ifndef USDT2 3430DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject); 3431#else /* USDT2 */ 3432DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject 3433 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref)); 3434#endif /* USDT2 */ 3435 3436JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index)) 3437 JNIWrapper("GetObjectArrayElement"); 3438#ifndef USDT2 3439 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index); 3440#else /* USDT2 */ 3441 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY( 3442 env, array, index); 3443#endif /* USDT2 */ 3444 jobject ret = NULL; 3445 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret); 3446 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3447 if (a->is_within_bounds(index)) { 3448 ret = JNIHandles::make_local(env, a->obj_at(index)); 3449 return ret; 3450 } else { 3451 char buf[jintAsStringSize]; 3452 sprintf(buf, "%d", index); 3453 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3454 } 3455JNI_END 3456 3457#ifndef USDT2 3458DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement); 3459#else /* USDT2 */ 3460DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement 3461 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN()); 3462#endif /* USDT2 */ 3463 3464JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value)) 3465 JNIWrapper("SetObjectArrayElement"); 3466#ifndef USDT2 3467 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value); 3468#else /* USDT2 */ 3469 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY( 3470 env, array, index, value); 3471#endif /* USDT2 */ 3472 DT_VOID_RETURN_MARK(SetObjectArrayElement); 3473 3474 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3475 oop v = JNIHandles::resolve(value); 3476 if (a->is_within_bounds(index)) { 3477 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) { 3478 a->obj_at_put(index, v); 3479 } else { 3480 THROW(vmSymbols::java_lang_ArrayStoreException()); 3481 } 3482 } else { 3483 char buf[jintAsStringSize]; 3484 sprintf(buf, "%d", index); 3485 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3486 } 3487JNI_END 3488 3489 3490#ifndef USDT2 3491#define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \ 3492\ 3493 DT_RETURN_MARK_DECL(New##Result##Array, Return); \ 3494\ 3495JNI_ENTRY(Return, \ 3496 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3497 JNIWrapper("New" XSTR(Result) "Array"); \ 3498 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\ 3499 Return ret = NULL;\ 3500 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3501\ 3502 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3503 ret = (Return) JNIHandles::make_local(env, obj); \ 3504 return ret;\ 3505JNI_END 3506 3507DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean) 3508DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte) 3509DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short) 3510DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char) 3511DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int) 3512DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long) 3513DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float) 3514DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double) 3515 3516#else /* USDT2 */ 3517 3518#define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \ 3519 ,EntryProbe,ReturnProbe) \ 3520\ 3521 DT_RETURN_MARK_DECL(New##Result##Array, Return \ 3522 , ReturnProbe); \ 3523\ 3524JNI_ENTRY(Return, \ 3525 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3526 JNIWrapper("New" XSTR(Result) "Array"); \ 3527 EntryProbe; \ 3528 Return ret = NULL;\ 3529 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3530\ 3531 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3532 ret = (Return) JNIHandles::make_local(env, obj); \ 3533 return ret;\ 3534JNI_END 3535 3536DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean, 3537 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len), 3538 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref)) 3539DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte, 3540 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len), 3541 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref)) 3542DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short, 3543 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len), 3544 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref)) 3545DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char, 3546 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len), 3547 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref)) 3548DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int, 3549 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len), 3550 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref)) 3551DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long, 3552 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len), 3553 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref)) 3554DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float, 3555 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len), 3556 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref)) 3557DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double, 3558 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len), 3559 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref)) 3560#endif /* USDT2 */ 3561 3562// Return an address which will fault if the caller writes to it. 3563 3564static char* get_bad_address() { 3565 static char* bad_address = NULL; 3566 if (bad_address == NULL) { 3567 size_t size = os::vm_allocation_granularity(); 3568 bad_address = os::reserve_memory(size); 3569 if (bad_address != NULL) { 3570 os::protect_memory(bad_address, size, os::MEM_PROT_READ, 3571 /*is_committed*/false); 3572 } 3573 } 3574 return bad_address; 3575} 3576 3577 3578#ifndef USDT2 3579#define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \ 3580\ 3581JNI_QUICK_ENTRY(ElementType*, \ 3582 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3583 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3584 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\ 3585 /* allocate an chunk of memory in c land */ \ 3586 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3587 ElementType* result; \ 3588 int len = a->length(); \ 3589 if (len == 0) { \ 3590 /* Empty array: legal but useless, can't return NULL. \ 3591 * Return a pointer to something useless. \ 3592 * Avoid asserts in typeArrayOop. */ \ 3593 result = (ElementType*)get_bad_address(); \ 3594 } else { \ 3595 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \ 3596 /* copy the array to the c chunk */ \ 3597 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3598 } \ 3599 if (isCopy) *isCopy = JNI_TRUE; \ 3600 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\ 3601 return result; \ 3602JNI_END 3603 3604DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3605DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3606DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3607DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3608DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int) 3609DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3610DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3611DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3612 3613#else /* USDT2 */ 3614 3615#define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \ 3616 , EntryProbe, ReturnProbe) \ 3617\ 3618JNI_QUICK_ENTRY(ElementType*, \ 3619 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3620 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3621 EntryProbe; \ 3622 /* allocate an chunk of memory in c land */ \ 3623 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3624 ElementType* result; \ 3625 int len = a->length(); \ 3626 if (len == 0) { \ 3627 /* Empty array: legal but useless, can't return NULL. \ 3628 * Return a pointer to something useless. \ 3629 * Avoid asserts in typeArrayOop. */ \ 3630 result = (ElementType*)get_bad_address(); \ 3631 } else { \ 3632 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \ 3633 /* copy the array to the c chunk */ \ 3634 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3635 } \ 3636 if (isCopy) *isCopy = JNI_TRUE; \ 3637 ReturnProbe; \ 3638 return result; \ 3639JNI_END 3640 3641DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3642 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3643 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result)) 3644DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3645 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3646 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result)) 3647DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3648 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3649 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result)) 3650DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3651 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3652 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result)) 3653DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int 3654 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3655 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result)) 3656DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3657 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3658 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result))) 3659// Float and double probes don't return value because dtrace doesn't currently support it 3660DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3661 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3662 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result)) 3663DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3664 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3665 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result)) 3666#endif /* USDT2 */ 3667 3668#ifndef USDT2 3669#define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \ 3670\ 3671JNI_QUICK_ENTRY(void, \ 3672 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3673 ElementType *buf, jint mode)) \ 3674 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3675 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\ 3676 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3677 int len = a->length(); \ 3678 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3679 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3680 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3681 } \ 3682 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3683 FreeHeap(buf); \ 3684 } \ 3685 } \ 3686 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\ 3687JNI_END 3688 3689DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3690DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3691DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3692DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3693DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int) 3694DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3695DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3696DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3697 3698#else /* USDT2 */ 3699 3700#define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \ 3701 , EntryProbe, ReturnProbe);\ 3702\ 3703JNI_QUICK_ENTRY(void, \ 3704 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3705 ElementType *buf, jint mode)) \ 3706 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3707 EntryProbe; \ 3708 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3709 int len = a->length(); \ 3710 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3711 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3712 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3713 } \ 3714 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3715 FreeHeap(buf); \ 3716 } \ 3717 } \ 3718 ReturnProbe; \ 3719JNI_END 3720 3721DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3722 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3723 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN()) 3724DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3725 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode), 3726 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN()) 3727DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3728 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3729 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN()) 3730DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3731 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3732 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN()) 3733DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int 3734 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode), 3735 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN()) 3736DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3737 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3738 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN()) 3739DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3740 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode), 3741 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN()) 3742DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3743 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode), 3744 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN()) 3745#endif /* USDT2 */ 3746 3747#ifndef USDT2 3748#define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3749 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\ 3750\ 3751JNI_ENTRY(void, \ 3752jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3753 jsize len, ElementType *buf)) \ 3754 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3755 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3756 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3757 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3758 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3759 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3760 } else { \ 3761 if (len > 0) { \ 3762 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3763 memcpy((u_char*) buf, \ 3764 (u_char*) src->Tag##_at_addr(start), \ 3765 len << sc); \ 3766 } \ 3767 } \ 3768JNI_END 3769 3770DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool) 3771DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3772DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3773DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3774DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int) 3775DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3776DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3777DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3778 3779#else /* USDT2 */ 3780 3781#define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3782 , EntryProbe, ReturnProbe); \ 3783 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \ 3784 , ReturnProbe); \ 3785\ 3786JNI_ENTRY(void, \ 3787jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3788 jsize len, ElementType *buf)) \ 3789 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3790 EntryProbe; \ 3791 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3792 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3793 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3794 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3795 } else { \ 3796 if (len > 0) { \ 3797 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3798 memcpy((u_char*) buf, \ 3799 (u_char*) src->Tag##_at_addr(start), \ 3800 len << sc); \ 3801 } \ 3802 } \ 3803JNI_END 3804 3805DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool 3806 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3807 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN()); 3808DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3809 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3810 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN()); 3811DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3812 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3813 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN()); 3814DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3815 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf), 3816 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN()); 3817DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int 3818 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf), 3819 HOTSPOT_JNI_GETINTARRAYREGION_RETURN()); 3820DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long 3821 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3822 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN()); 3823DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3824 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3825 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN()); 3826DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3827 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3828 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN()); 3829#endif /* USDT2 */ 3830 3831#ifndef USDT2 3832#define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3833 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\ 3834\ 3835JNI_ENTRY(void, \ 3836jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3837 jsize len, const ElementType *buf)) \ 3838 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3839 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3840 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3841 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3842 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3843 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3844 } else { \ 3845 if (len > 0) { \ 3846 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3847 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3848 (u_char*) buf, \ 3849 len << sc); \ 3850 } \ 3851 } \ 3852JNI_END 3853 3854DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool) 3855DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3856DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3857DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3858DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int) 3859DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3860DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3861DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3862 3863#else /* USDT2 */ 3864 3865#define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3866 , EntryProbe, ReturnProbe); \ 3867 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \ 3868 ,ReturnProbe); \ 3869\ 3870JNI_ENTRY(void, \ 3871jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3872 jsize len, const ElementType *buf)) \ 3873 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3874 EntryProbe; \ 3875 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3876 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3877 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3878 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3879 } else { \ 3880 if (len > 0) { \ 3881 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3882 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3883 (u_char*) buf, \ 3884 len << sc); \ 3885 } \ 3886 } \ 3887JNI_END 3888 3889DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool 3890 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf), 3891 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN()) 3892DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3893 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3894 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN()) 3895DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3896 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3897 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN()) 3898DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3899 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3900 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN()) 3901DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int 3902 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf), 3903 HOTSPOT_JNI_SETINTARRAYREGION_RETURN()) 3904DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long 3905 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3906 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN()) 3907DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3908 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3909 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN()) 3910DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3911 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3912 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN()) 3913#endif /* USDT2 */ 3914 3915 3916// 3917// Interception of natives 3918// 3919 3920// The RegisterNatives call being attempted tried to register with a method that 3921// is not native. Ask JVM TI what prefixes have been specified. Then check 3922// to see if the native method is now wrapped with the prefixes. See the 3923// SetNativeMethodPrefix(es) functions in the JVM TI Spec for details. 3924static Method* find_prefixed_native(KlassHandle k, 3925 Symbol* name, Symbol* signature, TRAPS) { 3926#if INCLUDE_JVMTI 3927 ResourceMark rm(THREAD); 3928 Method* method; 3929 int name_len = name->utf8_length(); 3930 char* name_str = name->as_utf8(); 3931 int prefix_count; 3932 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); 3933 for (int i = 0; i < prefix_count; i++) { 3934 char* prefix = prefixes[i]; 3935 int prefix_len = (int)strlen(prefix); 3936 3937 // try adding this prefix to the method name and see if it matches another method name 3938 int trial_len = name_len + prefix_len; 3939 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1); 3940 strcpy(trial_name_str, prefix); 3941 strcat(trial_name_str, name_str); 3942 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len); 3943 if (trial_name == NULL) { 3944 continue; // no such symbol, so this prefix wasn't used, try the next prefix 3945 } 3946 method = k()->lookup_method(trial_name, signature); 3947 if (method == NULL) { 3948 continue; // signature doesn't match, try the next prefix 3949 } 3950 if (method->is_native()) { 3951 method->set_is_prefixed_native(); 3952 return method; // wahoo, we found a prefixed version of the method, return it 3953 } 3954 // found as non-native, so prefix is good, add it, probably just need more prefixes 3955 name_len = trial_len; 3956 name_str = trial_name_str; 3957 } 3958#endif // INCLUDE_JVMTI 3959 return NULL; // not found 3960} 3961 3962static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) { 3963 Method* method = k()->lookup_method(name, signature); 3964 if (method == NULL) { 3965 ResourceMark rm; 3966 stringStream st; 3967 st.print("Method %s name or signature does not match", 3968 Method::name_and_sig_as_C_string(k(), name, signature)); 3969 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3970 } 3971 if (!method->is_native()) { 3972 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es) 3973 method = find_prefixed_native(k, name, signature, THREAD); 3974 if (method == NULL) { 3975 ResourceMark rm; 3976 stringStream st; 3977 st.print("Method %s is not declared as native", 3978 Method::name_and_sig_as_C_string(k(), name, signature)); 3979 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3980 } 3981 } 3982 3983 if (entry != NULL) { 3984 method->set_native_function(entry, 3985 Method::native_bind_event_is_interesting); 3986 } else { 3987 method->clear_native_function(); 3988 } 3989 if (PrintJNIResolving) { 3990 ResourceMark rm(THREAD); 3991 tty->print_cr("[Registering JNI native method %s.%s]", 3992 method->method_holder()->external_name(), 3993 method->name()->as_C_string()); 3994 } 3995 return true; 3996} 3997 3998#ifndef USDT2 3999DT_RETURN_MARK_DECL(RegisterNatives, jint); 4000#else /* USDT2 */ 4001DT_RETURN_MARK_DECL(RegisterNatives, jint 4002 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref)); 4003#endif /* USDT2 */ 4004 4005JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz, 4006 const JNINativeMethod *methods, 4007 jint nMethods)) 4008 JNIWrapper("RegisterNatives"); 4009#ifndef USDT2 4010 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods); 4011#else /* USDT2 */ 4012 HOTSPOT_JNI_REGISTERNATIVES_ENTRY( 4013 env, clazz, (void *) methods, nMethods); 4014#endif /* USDT2 */ 4015 jint ret = 0; 4016 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret); 4017 4018 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 4019 4020 for (int index = 0; index < nMethods; index++) { 4021 const char* meth_name = methods[index].name; 4022 const char* meth_sig = methods[index].signature; 4023 int meth_name_len = (int)strlen(meth_name); 4024 4025 // The class should have been loaded (we have an instance of the class 4026 // passed in) so the method and signature should already be in the symbol 4027 // table. If they're not there, the method doesn't exist. 4028 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len); 4029 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig)); 4030 4031 if (name == NULL || signature == NULL) { 4032 ResourceMark rm; 4033 stringStream st; 4034 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig); 4035 // Must return negative value on failure 4036 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1); 4037 } 4038 4039 bool res = register_native(h_k, name, signature, 4040 (address) methods[index].fnPtr, THREAD); 4041 if (!res) { 4042 ret = -1; 4043 break; 4044 } 4045 } 4046 return ret; 4047JNI_END 4048 4049 4050JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz)) 4051 JNIWrapper("UnregisterNatives"); 4052#ifndef USDT2 4053 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz); 4054#else /* USDT2 */ 4055 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY( 4056 env, clazz); 4057#endif /* USDT2 */ 4058 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 4059 //%note jni_2 4060 if (k->oop_is_instance()) { 4061 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) { 4062 Method* m = InstanceKlass::cast(k)->methods()->at(index); 4063 if (m->is_native()) { 4064 m->clear_native_function(); 4065 m->set_signature_handler(NULL); 4066 } 4067 } 4068 } 4069#ifndef USDT2 4070 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0); 4071#else /* USDT2 */ 4072 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN( 4073 0); 4074#endif /* USDT2 */ 4075 return 0; 4076JNI_END 4077 4078// 4079// Monitor functions 4080// 4081 4082#ifndef USDT2 4083DT_RETURN_MARK_DECL(MonitorEnter, jint); 4084#else /* USDT2 */ 4085DT_RETURN_MARK_DECL(MonitorEnter, jint 4086 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref)); 4087#endif /* USDT2 */ 4088 4089JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj)) 4090#ifndef USDT2 4091 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj); 4092#else /* USDT2 */ 4093 HOTSPOT_JNI_MONITORENTER_ENTRY( 4094 env, jobj); 4095#endif /* USDT2 */ 4096 jint ret = JNI_ERR; 4097 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret); 4098 4099 // If the object is null, we can't do anything with it 4100 if (jobj == NULL) { 4101 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4102 } 4103 4104 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); 4105 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR)); 4106 ret = JNI_OK; 4107 return ret; 4108JNI_END 4109 4110#ifndef USDT2 4111DT_RETURN_MARK_DECL(MonitorExit, jint); 4112#else /* USDT2 */ 4113DT_RETURN_MARK_DECL(MonitorExit, jint 4114 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref)); 4115#endif /* USDT2 */ 4116 4117JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj)) 4118#ifndef USDT2 4119 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj); 4120#else /* USDT2 */ 4121 HOTSPOT_JNI_MONITOREXIT_ENTRY( 4122 env, jobj); 4123#endif /* USDT2 */ 4124 jint ret = JNI_ERR; 4125 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret); 4126 4127 // Don't do anything with a null object 4128 if (jobj == NULL) { 4129 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4130 } 4131 4132 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); 4133 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR)); 4134 4135 ret = JNI_OK; 4136 return ret; 4137JNI_END 4138 4139// 4140// Extensions 4141// 4142 4143#ifndef USDT2 4144DT_VOID_RETURN_MARK_DECL(GetStringRegion); 4145#else /* USDT2 */ 4146DT_VOID_RETURN_MARK_DECL(GetStringRegion 4147 , HOTSPOT_JNI_GETSTRINGREGION_RETURN()); 4148#endif /* USDT2 */ 4149 4150JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf)) 4151 JNIWrapper("GetStringRegion"); 4152#ifndef USDT2 4153 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf); 4154#else /* USDT2 */ 4155 HOTSPOT_JNI_GETSTRINGREGION_ENTRY( 4156 env, string, start, len, buf); 4157#endif /* USDT2 */ 4158 DT_VOID_RETURN_MARK(GetStringRegion); 4159 oop s = JNIHandles::resolve_non_null(string); 4160 int s_len = java_lang_String::length(s); 4161 if (start < 0 || len < 0 || start + len > s_len) { 4162 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4163 } else { 4164 if (len > 0) { 4165 int s_offset = java_lang_String::offset(s); 4166 typeArrayOop s_value = java_lang_String::value(s); 4167 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len); 4168 } 4169 } 4170JNI_END 4171 4172#ifndef USDT2 4173DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion); 4174#else /* USDT2 */ 4175DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion 4176 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN()); 4177#endif /* USDT2 */ 4178 4179JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf)) 4180 JNIWrapper("GetStringUTFRegion"); 4181#ifndef USDT2 4182 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf); 4183#else /* USDT2 */ 4184 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY( 4185 env, string, start, len, buf); 4186#endif /* USDT2 */ 4187 DT_VOID_RETURN_MARK(GetStringUTFRegion); 4188 oop s = JNIHandles::resolve_non_null(string); 4189 int s_len = java_lang_String::length(s); 4190 if (start < 0 || len < 0 || start + len > s_len) { 4191 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4192 } else { 4193 //%note jni_7 4194 if (len > 0) { 4195 ResourceMark rm(THREAD); 4196 char *utf_region = java_lang_String::as_utf8_string(s, start, len); 4197 int utf_len = (int)strlen(utf_region); 4198 memcpy(buf, utf_region, utf_len); 4199 buf[utf_len] = 0; 4200 } else { 4201 // JDK null-terminates the buffer even in len is zero 4202 if (buf != NULL) { 4203 buf[0] = 0; 4204 } 4205 } 4206 } 4207JNI_END 4208 4209 4210JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)) 4211 JNIWrapper("GetPrimitiveArrayCritical"); 4212#ifndef USDT2 4213 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy); 4214#else /* USDT2 */ 4215 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY( 4216 env, array, (uintptr_t *) isCopy); 4217#endif /* USDT2 */ 4218 GC_locker::lock_critical(thread); 4219 if (isCopy != NULL) { 4220 *isCopy = JNI_FALSE; 4221 } 4222 oop a = JNIHandles::resolve_non_null(array); 4223 assert(a->is_array(), "just checking"); 4224 BasicType type; 4225 if (a->is_objArray()) { 4226 type = T_OBJECT; 4227 } else { 4228 type = TypeArrayKlass::cast(a->klass())->element_type(); 4229 } 4230 void* ret = arrayOop(a)->base(type); 4231#ifndef USDT2 4232 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret); 4233#else /* USDT2 */ 4234 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN( 4235 ret); 4236#endif /* USDT2 */ 4237 return ret; 4238JNI_END 4239 4240 4241JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)) 4242 JNIWrapper("ReleasePrimitiveArrayCritical"); 4243#ifndef USDT2 4244 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode); 4245#else /* USDT2 */ 4246 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY( 4247 env, array, carray, mode); 4248#endif /* USDT2 */ 4249 // The array, carray and mode arguments are ignored 4250 GC_locker::unlock_critical(thread); 4251#ifndef USDT2 4252 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return); 4253#else /* USDT2 */ 4254HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN( 4255); 4256#endif /* USDT2 */ 4257JNI_END 4258 4259 4260JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy)) 4261 JNIWrapper("GetStringCritical"); 4262#ifndef USDT2 4263 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy); 4264#else /* USDT2 */ 4265 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY( 4266 env, string, (uintptr_t *) isCopy); 4267#endif /* USDT2 */ 4268 GC_locker::lock_critical(thread); 4269 if (isCopy != NULL) { 4270 *isCopy = JNI_FALSE; 4271 } 4272 oop s = JNIHandles::resolve_non_null(string); 4273 int s_len = java_lang_String::length(s); 4274 typeArrayOop s_value = java_lang_String::value(s); 4275 int s_offset = java_lang_String::offset(s); 4276 const jchar* ret; 4277 if (s_len > 0) { 4278 ret = s_value->char_at_addr(s_offset); 4279 } else { 4280 ret = (jchar*) s_value->base(T_CHAR); 4281 } 4282#ifndef USDT2 4283 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret); 4284#else /* USDT2 */ 4285 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN( 4286 (uint16_t *) ret); 4287#endif /* USDT2 */ 4288 return ret; 4289JNI_END 4290 4291 4292JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars)) 4293 JNIWrapper("ReleaseStringCritical"); 4294#ifndef USDT2 4295 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars); 4296#else /* USDT2 */ 4297 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY( 4298 env, str, (uint16_t *) chars); 4299#endif /* USDT2 */ 4300 // The str and chars arguments are ignored 4301 GC_locker::unlock_critical(thread); 4302#ifndef USDT2 4303 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return); 4304#else /* USDT2 */ 4305HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN( 4306); 4307#endif /* USDT2 */ 4308JNI_END 4309 4310 4311JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref)) 4312 JNIWrapper("jni_NewWeakGlobalRef"); 4313#ifndef USDT2 4314 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref); 4315#else /* USDT2 */ 4316 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY( 4317 env, ref); 4318#endif /* USDT2 */ 4319 Handle ref_handle(thread, JNIHandles::resolve(ref)); 4320 jweak ret = JNIHandles::make_weak_global(ref_handle); 4321#ifndef USDT2 4322 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret); 4323#else /* USDT2 */ 4324 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN( 4325 ret); 4326#endif /* USDT2 */ 4327 return ret; 4328JNI_END 4329 4330// Must be JNI_ENTRY (with HandleMark) 4331JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref)) 4332 JNIWrapper("jni_DeleteWeakGlobalRef"); 4333#ifndef USDT2 4334 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref); 4335#else /* USDT2 */ 4336 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY( 4337 env, ref); 4338#endif /* USDT2 */ 4339 JNIHandles::destroy_weak_global(ref); 4340#ifndef USDT2 4341 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return); 4342#else /* USDT2 */ 4343 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN( 4344 ); 4345#endif /* USDT2 */ 4346JNI_END 4347 4348 4349JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env)) 4350 JNIWrapper("jni_ExceptionCheck"); 4351#ifndef USDT2 4352 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env); 4353#else /* USDT2 */ 4354 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY( 4355 env); 4356#endif /* USDT2 */ 4357 jni_check_async_exceptions(thread); 4358 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE; 4359#ifndef USDT2 4360 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret); 4361#else /* USDT2 */ 4362 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN( 4363 ret); 4364#endif /* USDT2 */ 4365 return ret; 4366JNI_END 4367 4368 4369// Initialization state for three routines below relating to 4370// java.nio.DirectBuffers 4371static jint directBufferSupportInitializeStarted = 0; 4372static volatile jint directBufferSupportInitializeEnded = 0; 4373static volatile jint directBufferSupportInitializeFailed = 0; 4374static jclass bufferClass = NULL; 4375static jclass directBufferClass = NULL; 4376static jclass directByteBufferClass = NULL; 4377static jmethodID directByteBufferConstructor = NULL; 4378static jfieldID directBufferAddressField = NULL; 4379static jfieldID bufferCapacityField = NULL; 4380 4381static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) { 4382 Handle loader; // null (bootstrap) loader 4383 Handle protection_domain; // null protection domain 4384 4385 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 4386 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL); 4387 4388 if (TraceClassResolution && result != NULL) { 4389 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 4390 } 4391 return result; 4392} 4393 4394// These lookups are done with the NULL (bootstrap) ClassLoader to 4395// circumvent any security checks that would be done by jni_FindClass. 4396JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env)) 4397{ 4398 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; } 4399 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; } 4400 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; } 4401 return true; 4402} 4403JNI_END 4404 4405 4406static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) { 4407 if (directBufferSupportInitializeFailed) { 4408 return false; 4409 } 4410 4411 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) { 4412 if (!lookupDirectBufferClasses(env)) { 4413 directBufferSupportInitializeFailed = 1; 4414 return false; 4415 } 4416 4417 // Make global references for these 4418 bufferClass = (jclass) env->NewGlobalRef(bufferClass); 4419 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass); 4420 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass); 4421 4422 // Get needed field and method IDs 4423 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V"); 4424 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J"); 4425 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I"); 4426 4427 if ((directByteBufferConstructor == NULL) || 4428 (directBufferAddressField == NULL) || 4429 (bufferCapacityField == NULL)) { 4430 directBufferSupportInitializeFailed = 1; 4431 return false; 4432 } 4433 4434 directBufferSupportInitializeEnded = 1; 4435 } else { 4436 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) { 4437 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls 4438 // os::sleep which requires the VM state transition. On other platforms, it 4439 // is not necessary. The following call to change the VM state is purposely 4440 // put inside the loop to avoid potential deadlock when multiple threads 4441 // try to call this method. See 6791815 for more details. 4442 ThreadInVMfromNative tivn(thread); 4443 os::yield_all(); 4444 } 4445 } 4446 4447 return !directBufferSupportInitializeFailed; 4448} 4449 4450extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity) 4451{ 4452 // thread_from_jni_environment() will block if VM is gone. 4453 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4454 4455 JNIWrapper("jni_NewDirectByteBuffer"); 4456#ifndef USDT2 4457 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity); 4458#else /* USDT2 */ 4459 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY( 4460 env, address, capacity); 4461#endif /* USDT2 */ 4462 4463 if (!directBufferSupportInitializeEnded) { 4464 if (!initializeDirectBufferSupport(env, thread)) { 4465#ifndef USDT2 4466 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL); 4467#else /* USDT2 */ 4468 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4469 NULL); 4470#endif /* USDT2 */ 4471 return NULL; 4472 } 4473 } 4474 4475 // Being paranoid about accidental sign extension on address 4476 jlong addr = (jlong) ((uintptr_t) address); 4477 // NOTE that package-private DirectByteBuffer constructor currently 4478 // takes int capacity 4479 jint cap = (jint) capacity; 4480 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap); 4481#ifndef USDT2 4482 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret); 4483#else /* USDT2 */ 4484 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4485 ret); 4486#endif /* USDT2 */ 4487 return ret; 4488} 4489 4490#ifndef USDT2 4491DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*); 4492#else /* USDT2 */ 4493DT_RETURN_MARK_DECL(GetDirectBufferAddress, void* 4494 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref)); 4495#endif /* USDT2 */ 4496 4497extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf) 4498{ 4499 // thread_from_jni_environment() will block if VM is gone. 4500 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4501 4502 JNIWrapper("jni_GetDirectBufferAddress"); 4503#ifndef USDT2 4504 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf); 4505#else /* USDT2 */ 4506 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY( 4507 env, buf); 4508#endif /* USDT2 */ 4509 void* ret = NULL; 4510 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret); 4511 4512 if (!directBufferSupportInitializeEnded) { 4513 if (!initializeDirectBufferSupport(env, thread)) { 4514 return 0; 4515 } 4516 } 4517 4518 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) { 4519 return 0; 4520 } 4521 4522 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField); 4523 return ret; 4524} 4525 4526#ifndef USDT2 4527DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong); 4528#else /* USDT2 */ 4529DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong 4530 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref)); 4531#endif /* USDT2 */ 4532 4533extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf) 4534{ 4535 // thread_from_jni_environment() will block if VM is gone. 4536 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4537 4538 JNIWrapper("jni_GetDirectBufferCapacity"); 4539#ifndef USDT2 4540 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf); 4541#else /* USDT2 */ 4542 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY( 4543 env, buf); 4544#endif /* USDT2 */ 4545 jlong ret = -1; 4546 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret); 4547 4548 if (!directBufferSupportInitializeEnded) { 4549 if (!initializeDirectBufferSupport(env, thread)) { 4550 ret = 0; 4551 return ret; 4552 } 4553 } 4554 4555 if (buf == NULL) { 4556 return -1; 4557 } 4558 4559 if (!env->IsInstanceOf(buf, directBufferClass)) { 4560 return -1; 4561 } 4562 4563 // NOTE that capacity is currently an int in the implementation 4564 ret = env->GetIntField(buf, bufferCapacityField); 4565 return ret; 4566} 4567 4568 4569JNI_LEAF(jint, jni_GetVersion(JNIEnv *env)) 4570 JNIWrapper("GetVersion"); 4571#ifndef USDT2 4572 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env); 4573#else /* USDT2 */ 4574 HOTSPOT_JNI_GETVERSION_ENTRY( 4575 env); 4576#endif /* USDT2 */ 4577#ifndef USDT2 4578 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion); 4579#else /* USDT2 */ 4580 HOTSPOT_JNI_GETVERSION_RETURN( 4581 CurrentVersion); 4582#endif /* USDT2 */ 4583 return CurrentVersion; 4584JNI_END 4585 4586extern struct JavaVM_ main_vm; 4587 4588JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm)) 4589 JNIWrapper("jni_GetJavaVM"); 4590#ifndef USDT2 4591 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm); 4592#else /* USDT2 */ 4593 HOTSPOT_JNI_GETJAVAVM_ENTRY( 4594 env, (void **) vm); 4595#endif /* USDT2 */ 4596 *vm = (JavaVM *)(&main_vm); 4597#ifndef USDT2 4598 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK); 4599#else /* USDT2 */ 4600 HOTSPOT_JNI_GETJAVAVM_RETURN( 4601 JNI_OK); 4602#endif /* USDT2 */ 4603 return JNI_OK; 4604JNI_END 4605 4606// Structure containing all jni functions 4607struct JNINativeInterface_ jni_NativeInterface = { 4608 NULL, 4609 NULL, 4610 NULL, 4611 4612 NULL, 4613 4614 jni_GetVersion, 4615 4616 jni_DefineClass, 4617 jni_FindClass, 4618 4619 jni_FromReflectedMethod, 4620 jni_FromReflectedField, 4621 4622 jni_ToReflectedMethod, 4623 4624 jni_GetSuperclass, 4625 jni_IsAssignableFrom, 4626 4627 jni_ToReflectedField, 4628 4629 jni_Throw, 4630 jni_ThrowNew, 4631 jni_ExceptionOccurred, 4632 jni_ExceptionDescribe, 4633 jni_ExceptionClear, 4634 jni_FatalError, 4635 4636 jni_PushLocalFrame, 4637 jni_PopLocalFrame, 4638 4639 jni_NewGlobalRef, 4640 jni_DeleteGlobalRef, 4641 jni_DeleteLocalRef, 4642 jni_IsSameObject, 4643 4644 jni_NewLocalRef, 4645 jni_EnsureLocalCapacity, 4646 4647 jni_AllocObject, 4648 jni_NewObject, 4649 jni_NewObjectV, 4650 jni_NewObjectA, 4651 4652 jni_GetObjectClass, 4653 jni_IsInstanceOf, 4654 4655 jni_GetMethodID, 4656 4657 jni_CallObjectMethod, 4658 jni_CallObjectMethodV, 4659 jni_CallObjectMethodA, 4660 jni_CallBooleanMethod, 4661 jni_CallBooleanMethodV, 4662 jni_CallBooleanMethodA, 4663 jni_CallByteMethod, 4664 jni_CallByteMethodV, 4665 jni_CallByteMethodA, 4666 jni_CallCharMethod, 4667 jni_CallCharMethodV, 4668 jni_CallCharMethodA, 4669 jni_CallShortMethod, 4670 jni_CallShortMethodV, 4671 jni_CallShortMethodA, 4672 jni_CallIntMethod, 4673 jni_CallIntMethodV, 4674 jni_CallIntMethodA, 4675 jni_CallLongMethod, 4676 jni_CallLongMethodV, 4677 jni_CallLongMethodA, 4678 jni_CallFloatMethod, 4679 jni_CallFloatMethodV, 4680 jni_CallFloatMethodA, 4681 jni_CallDoubleMethod, 4682 jni_CallDoubleMethodV, 4683 jni_CallDoubleMethodA, 4684 jni_CallVoidMethod, 4685 jni_CallVoidMethodV, 4686 jni_CallVoidMethodA, 4687 4688 jni_CallNonvirtualObjectMethod, 4689 jni_CallNonvirtualObjectMethodV, 4690 jni_CallNonvirtualObjectMethodA, 4691 jni_CallNonvirtualBooleanMethod, 4692 jni_CallNonvirtualBooleanMethodV, 4693 jni_CallNonvirtualBooleanMethodA, 4694 jni_CallNonvirtualByteMethod, 4695 jni_CallNonvirtualByteMethodV, 4696 jni_CallNonvirtualByteMethodA, 4697 jni_CallNonvirtualCharMethod, 4698 jni_CallNonvirtualCharMethodV, 4699 jni_CallNonvirtualCharMethodA, 4700 jni_CallNonvirtualShortMethod, 4701 jni_CallNonvirtualShortMethodV, 4702 jni_CallNonvirtualShortMethodA, 4703 jni_CallNonvirtualIntMethod, 4704 jni_CallNonvirtualIntMethodV, 4705 jni_CallNonvirtualIntMethodA, 4706 jni_CallNonvirtualLongMethod, 4707 jni_CallNonvirtualLongMethodV, 4708 jni_CallNonvirtualLongMethodA, 4709 jni_CallNonvirtualFloatMethod, 4710 jni_CallNonvirtualFloatMethodV, 4711 jni_CallNonvirtualFloatMethodA, 4712 jni_CallNonvirtualDoubleMethod, 4713 jni_CallNonvirtualDoubleMethodV, 4714 jni_CallNonvirtualDoubleMethodA, 4715 jni_CallNonvirtualVoidMethod, 4716 jni_CallNonvirtualVoidMethodV, 4717 jni_CallNonvirtualVoidMethodA, 4718 4719 jni_GetFieldID, 4720 4721 jni_GetObjectField, 4722 jni_GetBooleanField, 4723 jni_GetByteField, 4724 jni_GetCharField, 4725 jni_GetShortField, 4726 jni_GetIntField, 4727 jni_GetLongField, 4728 jni_GetFloatField, 4729 jni_GetDoubleField, 4730 4731 jni_SetObjectField, 4732 jni_SetBooleanField, 4733 jni_SetByteField, 4734 jni_SetCharField, 4735 jni_SetShortField, 4736 jni_SetIntField, 4737 jni_SetLongField, 4738 jni_SetFloatField, 4739 jni_SetDoubleField, 4740 4741 jni_GetStaticMethodID, 4742 4743 jni_CallStaticObjectMethod, 4744 jni_CallStaticObjectMethodV, 4745 jni_CallStaticObjectMethodA, 4746 jni_CallStaticBooleanMethod, 4747 jni_CallStaticBooleanMethodV, 4748 jni_CallStaticBooleanMethodA, 4749 jni_CallStaticByteMethod, 4750 jni_CallStaticByteMethodV, 4751 jni_CallStaticByteMethodA, 4752 jni_CallStaticCharMethod, 4753 jni_CallStaticCharMethodV, 4754 jni_CallStaticCharMethodA, 4755 jni_CallStaticShortMethod, 4756 jni_CallStaticShortMethodV, 4757 jni_CallStaticShortMethodA, 4758 jni_CallStaticIntMethod, 4759 jni_CallStaticIntMethodV, 4760 jni_CallStaticIntMethodA, 4761 jni_CallStaticLongMethod, 4762 jni_CallStaticLongMethodV, 4763 jni_CallStaticLongMethodA, 4764 jni_CallStaticFloatMethod, 4765 jni_CallStaticFloatMethodV, 4766 jni_CallStaticFloatMethodA, 4767 jni_CallStaticDoubleMethod, 4768 jni_CallStaticDoubleMethodV, 4769 jni_CallStaticDoubleMethodA, 4770 jni_CallStaticVoidMethod, 4771 jni_CallStaticVoidMethodV, 4772 jni_CallStaticVoidMethodA, 4773 4774 jni_GetStaticFieldID, 4775 4776 jni_GetStaticObjectField, 4777 jni_GetStaticBooleanField, 4778 jni_GetStaticByteField, 4779 jni_GetStaticCharField, 4780 jni_GetStaticShortField, 4781 jni_GetStaticIntField, 4782 jni_GetStaticLongField, 4783 jni_GetStaticFloatField, 4784 jni_GetStaticDoubleField, 4785 4786 jni_SetStaticObjectField, 4787 jni_SetStaticBooleanField, 4788 jni_SetStaticByteField, 4789 jni_SetStaticCharField, 4790 jni_SetStaticShortField, 4791 jni_SetStaticIntField, 4792 jni_SetStaticLongField, 4793 jni_SetStaticFloatField, 4794 jni_SetStaticDoubleField, 4795 4796 jni_NewString, 4797 jni_GetStringLength, 4798 jni_GetStringChars, 4799 jni_ReleaseStringChars, 4800 4801 jni_NewStringUTF, 4802 jni_GetStringUTFLength, 4803 jni_GetStringUTFChars, 4804 jni_ReleaseStringUTFChars, 4805 4806 jni_GetArrayLength, 4807 4808 jni_NewObjectArray, 4809 jni_GetObjectArrayElement, 4810 jni_SetObjectArrayElement, 4811 4812 jni_NewBooleanArray, 4813 jni_NewByteArray, 4814 jni_NewCharArray, 4815 jni_NewShortArray, 4816 jni_NewIntArray, 4817 jni_NewLongArray, 4818 jni_NewFloatArray, 4819 jni_NewDoubleArray, 4820 4821 jni_GetBooleanArrayElements, 4822 jni_GetByteArrayElements, 4823 jni_GetCharArrayElements, 4824 jni_GetShortArrayElements, 4825 jni_GetIntArrayElements, 4826 jni_GetLongArrayElements, 4827 jni_GetFloatArrayElements, 4828 jni_GetDoubleArrayElements, 4829 4830 jni_ReleaseBooleanArrayElements, 4831 jni_ReleaseByteArrayElements, 4832 jni_ReleaseCharArrayElements, 4833 jni_ReleaseShortArrayElements, 4834 jni_ReleaseIntArrayElements, 4835 jni_ReleaseLongArrayElements, 4836 jni_ReleaseFloatArrayElements, 4837 jni_ReleaseDoubleArrayElements, 4838 4839 jni_GetBooleanArrayRegion, 4840 jni_GetByteArrayRegion, 4841 jni_GetCharArrayRegion, 4842 jni_GetShortArrayRegion, 4843 jni_GetIntArrayRegion, 4844 jni_GetLongArrayRegion, 4845 jni_GetFloatArrayRegion, 4846 jni_GetDoubleArrayRegion, 4847 4848 jni_SetBooleanArrayRegion, 4849 jni_SetByteArrayRegion, 4850 jni_SetCharArrayRegion, 4851 jni_SetShortArrayRegion, 4852 jni_SetIntArrayRegion, 4853 jni_SetLongArrayRegion, 4854 jni_SetFloatArrayRegion, 4855 jni_SetDoubleArrayRegion, 4856 4857 jni_RegisterNatives, 4858 jni_UnregisterNatives, 4859 4860 jni_MonitorEnter, 4861 jni_MonitorExit, 4862 4863 jni_GetJavaVM, 4864 4865 jni_GetStringRegion, 4866 jni_GetStringUTFRegion, 4867 4868 jni_GetPrimitiveArrayCritical, 4869 jni_ReleasePrimitiveArrayCritical, 4870 4871 jni_GetStringCritical, 4872 jni_ReleaseStringCritical, 4873 4874 jni_NewWeakGlobalRef, 4875 jni_DeleteWeakGlobalRef, 4876 4877 jni_ExceptionCheck, 4878 4879 jni_NewDirectByteBuffer, 4880 jni_GetDirectBufferAddress, 4881 jni_GetDirectBufferCapacity, 4882 4883 // New 1_6 features 4884 4885 jni_GetObjectRefType 4886}; 4887 4888 4889// For jvmti use to modify jni function table. 4890// Java threads in native contiues to run until it is transitioned 4891// to VM at safepoint. Before the transition or before it is blocked 4892// for safepoint it may access jni function table. VM could crash if 4893// any java thread access the jni function table in the middle of memcpy. 4894// To avoid this each function pointers are copied automically. 4895void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) { 4896 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); 4897 intptr_t *a = (intptr_t *) jni_functions(); 4898 intptr_t *b = (intptr_t *) new_jni_NativeInterface; 4899 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) { 4900 Atomic::store_ptr(*b++, a++); 4901 } 4902} 4903 4904void quicken_jni_functions() { 4905 // Replace Get<Primitive>Field with fast versions 4906 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access() 4907 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls 4908#if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2) 4909 // windows x86 currently needs SEH wrapper and the gain of the fast 4910 // versions currently isn't certain for server vm on uniprocessor. 4911 && os::is_MP() 4912#endif 4913 ) { 4914 address func; 4915 func = JNI_FastGetField::generate_fast_get_boolean_field(); 4916 if (func != (address)-1) { 4917 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func; 4918 } 4919 func = JNI_FastGetField::generate_fast_get_byte_field(); 4920 if (func != (address)-1) { 4921 jni_NativeInterface.GetByteField = (GetByteField_t)func; 4922 } 4923 func = JNI_FastGetField::generate_fast_get_char_field(); 4924 if (func != (address)-1) { 4925 jni_NativeInterface.GetCharField = (GetCharField_t)func; 4926 } 4927 func = JNI_FastGetField::generate_fast_get_short_field(); 4928 if (func != (address)-1) { 4929 jni_NativeInterface.GetShortField = (GetShortField_t)func; 4930 } 4931 func = JNI_FastGetField::generate_fast_get_int_field(); 4932 if (func != (address)-1) { 4933 jni_NativeInterface.GetIntField = (GetIntField_t)func; 4934 } 4935 func = JNI_FastGetField::generate_fast_get_long_field(); 4936 if (func != (address)-1) { 4937 jni_NativeInterface.GetLongField = (GetLongField_t)func; 4938 } 4939 func = JNI_FastGetField::generate_fast_get_float_field(); 4940 if (func != (address)-1) { 4941 jni_NativeInterface.GetFloatField = (GetFloatField_t)func; 4942 } 4943 func = JNI_FastGetField::generate_fast_get_double_field(); 4944 if (func != (address)-1) { 4945 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func; 4946 } 4947 } 4948} 4949 4950// Returns the function structure 4951struct JNINativeInterface_* jni_functions() { 4952#if INCLUDE_JNI_CHECK 4953 if (CheckJNICalls) return jni_functions_check(); 4954#endif // INCLUDE_JNI_CHECK 4955 return &jni_NativeInterface; 4956} 4957 4958// Returns the function structure 4959struct JNINativeInterface_* jni_functions_nocheck() { 4960 return &jni_NativeInterface; 4961} 4962 4963 4964// Invocation API 4965 4966 4967// Forward declaration 4968extern const struct JNIInvokeInterface_ jni_InvokeInterface; 4969 4970// Global invocation API vars 4971volatile jint vm_created = 0; 4972// Indicate whether it is safe to recreate VM 4973volatile jint safe_to_recreate_vm = 1; 4974struct JavaVM_ main_vm = {&jni_InvokeInterface}; 4975 4976 4977#define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */ 4978enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL }; 4979 4980#ifndef USDT2 4981HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*); 4982DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint); 4983#else /* USDT2 */ 4984DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint 4985 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref)); 4986#endif /* USDT2 */ 4987 4988_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) { 4989#ifndef USDT2 4990 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_); 4991#else /* USDT2 */ 4992 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY( 4993 args_); 4994#endif /* USDT2 */ 4995 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_; 4996 jint ret = JNI_ERR; 4997 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret); 4998 4999 if (Threads::is_supported_jni_version(args->version)) { 5000 ret = JNI_OK; 5001 } 5002 // 1.1 style no longer supported in hotspot. 5003 // According the JNI spec, we should update args->version on return. 5004 // We also use the structure to communicate with launcher about default 5005 // stack size. 5006 if (args->version == JNI_VERSION_1_1) { 5007 args->version = JNI_VERSION_1_2; 5008 // javaStackSize is int in arguments structure 5009 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow"); 5010 args->javaStackSize = (jint)(ThreadStackSize * K); 5011 } 5012 return ret; 5013} 5014 5015#ifndef PRODUCT 5016 5017#include "gc_interface/collectedHeap.hpp" 5018#include "utilities/quickSort.hpp" 5019#if INCLUDE_VM_STRUCTS 5020#include "runtime/vmStructs.hpp" 5021#endif 5022 5023#define run_unit_test(unit_test_function_call) \ 5024 tty->print_cr("Running test: " #unit_test_function_call); \ 5025 unit_test_function_call 5026 5027void execute_internal_vm_tests() { 5028 if (ExecuteInternalVMTests) { 5029 tty->print_cr("Running internal VM tests"); 5030 run_unit_test(GlobalDefinitions::test_globals()); 5031 run_unit_test(arrayOopDesc::test_max_array_length()); 5032 run_unit_test(CollectedHeap::test_is_in()); 5033 run_unit_test(QuickSort::test_quick_sort()); 5034 run_unit_test(AltHashing::test_alt_hash()); 5035#if INCLUDE_VM_STRUCTS 5036 run_unit_test(VMStructs::test()); 5037#endif 5038 tty->print_cr("All internal VM tests passed"); 5039 } 5040} 5041 5042#undef run_unit_test 5043 5044#endif 5045 5046#ifndef USDT2 5047HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5048DT_RETURN_MARK_DECL(CreateJavaVM, jint); 5049#else /* USDT2 */ 5050DT_RETURN_MARK_DECL(CreateJavaVM, jint 5051 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref)); 5052#endif /* USDT2 */ 5053 5054_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) { 5055#ifndef USDT2 5056 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5057#else /* USDT2 */ 5058 HOTSPOT_JNI_CREATEJAVAVM_ENTRY( 5059 (void **) vm, penv, args); 5060#endif /* USDT2 */ 5061 5062 jint result = JNI_ERR; 5063 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result); 5064 5065 // We're about to use Atomic::xchg for synchronization. Some Zero 5066 // platforms use the GCC builtin __sync_lock_test_and_set for this, 5067 // but __sync_lock_test_and_set is not guaranteed to do what we want 5068 // on all architectures. So we check it works before relying on it. 5069#if defined(ZERO) && defined(ASSERT) 5070 { 5071 jint a = 0xcafebabe; 5072 jint b = Atomic::xchg(0xdeadbeef, &a); 5073 void *c = &a; 5074 void *d = Atomic::xchg_ptr(&b, &c); 5075 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works"); 5076 assert(c == &b && d == &a, "Atomic::xchg_ptr() works"); 5077 } 5078#endif // ZERO && ASSERT 5079 5080 // At the moment it's only possible to have one Java VM, 5081 // since some of the runtime state is in global variables. 5082 5083 // We cannot use our mutex locks here, since they only work on 5084 // Threads. We do an atomic compare and exchange to ensure only 5085 // one thread can call this method at a time 5086 5087 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms 5088 // the add/dec implementations are dependent on whether we are running 5089 // on a multiprocessor, and at this stage of initialization the os::is_MP 5090 // function used to determine this will always return false. Atomic::xchg 5091 // does not have this problem. 5092 if (Atomic::xchg(1, &vm_created) == 1) { 5093 return JNI_ERR; // already created, or create attempt in progress 5094 } 5095 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) { 5096 return JNI_ERR; // someone tried and failed and retry not allowed. 5097 } 5098 5099 assert(vm_created == 1, "vm_created is true during the creation"); 5100 5101 /** 5102 * Certain errors during initialization are recoverable and do not 5103 * prevent this method from being called again at a later time 5104 * (perhaps with different arguments). However, at a certain 5105 * point during initialization if an error occurs we cannot allow 5106 * this function to be called again (or it will crash). In those 5107 * situations, the 'canTryAgain' flag is set to false, which atomically 5108 * sets safe_to_recreate_vm to 1, such that any new call to 5109 * JNI_CreateJavaVM will immediately fail using the above logic. 5110 */ 5111 bool can_try_again = true; 5112 5113 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again); 5114 if (result == JNI_OK) { 5115 JavaThread *thread = JavaThread::current(); 5116 /* thread is thread_in_vm here */ 5117 *vm = (JavaVM *)(&main_vm); 5118 *(JNIEnv**)penv = thread->jni_environment(); 5119 5120 // Tracks the time application was running before GC 5121 RuntimeService::record_application_start(); 5122 5123 // Notify JVMTI 5124 if (JvmtiExport::should_post_thread_life()) { 5125 JvmtiExport::post_thread_start(thread); 5126 } 5127 5128 EVENT_BEGIN(TraceEventThreadStart, event); 5129 EVENT_COMMIT(event, 5130 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj()))); 5131 5132 // Check if we should compile all classes on bootclasspath 5133 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();) 5134 NOT_PRODUCT(if (ReplayCompiles) ciReplay::replay(thread);) 5135 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. 5136 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5137 } else { 5138 if (can_try_again) { 5139 // reset safe_to_recreate_vm to 1 so that retrial would be possible 5140 safe_to_recreate_vm = 1; 5141 } 5142 5143 // Creation failed. We must reset vm_created 5144 *vm = 0; 5145 *(JNIEnv**)penv = 0; 5146 // reset vm_created last to avoid race condition. Use OrderAccess to 5147 // control both compiler and architectural-based reordering. 5148 OrderAccess::release_store(&vm_created, 0); 5149 } 5150 5151 NOT_PRODUCT(test_error_handler(ErrorHandlerTest)); 5152 NOT_PRODUCT(execute_internal_vm_tests()); 5153 return result; 5154} 5155 5156#ifndef USDT2 5157HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5158 JavaVM**, jsize, jsize*); 5159HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); 5160#endif /* !USDT2 */ 5161 5162_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { 5163 // See bug 4367188, the wrapper can sometimes cause VM crashes 5164 // JNIWrapper("GetCreatedJavaVMs"); 5165#ifndef USDT2 5166 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5167 vm_buf, bufLen, numVMs); 5168#else /* USDT2 */ 5169 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY( 5170 (void **) vm_buf, bufLen, (uintptr_t *) numVMs); 5171#endif /* USDT2 */ 5172 if (vm_created) { 5173 if (numVMs != NULL) *numVMs = 1; 5174 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); 5175 } else { 5176 if (numVMs != NULL) *numVMs = 0; 5177 } 5178#ifndef USDT2 5179 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); 5180#else /* USDT2 */ 5181 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN( 5182 JNI_OK); 5183#endif /* USDT2 */ 5184 return JNI_OK; 5185} 5186 5187extern "C" { 5188 5189#ifndef USDT2 5190DT_RETURN_MARK_DECL(DestroyJavaVM, jint); 5191#else /* USDT2 */ 5192DT_RETURN_MARK_DECL(DestroyJavaVM, jint 5193 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref)); 5194#endif /* USDT2 */ 5195 5196jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { 5197#ifndef USDT2 5198 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); 5199#else /* USDT2 */ 5200 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY( 5201 vm); 5202#endif /* USDT2 */ 5203 jint res = JNI_ERR; 5204 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); 5205 5206 if (!vm_created) { 5207 res = JNI_ERR; 5208 return res; 5209 } 5210 5211 JNIWrapper("DestroyJavaVM"); 5212 JNIEnv *env; 5213 JavaVMAttachArgs destroyargs; 5214 destroyargs.version = CurrentVersion; 5215 destroyargs.name = (char *)"DestroyJavaVM"; 5216 destroyargs.group = NULL; 5217 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); 5218 if (res != JNI_OK) { 5219 return res; 5220 } 5221 5222 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. 5223 JavaThread* thread = JavaThread::current(); 5224 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5225 if (Threads::destroy_vm()) { 5226 // Should not change thread state, VM is gone 5227 vm_created = false; 5228 res = JNI_OK; 5229 return res; 5230 } else { 5231 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5232 res = JNI_ERR; 5233 return res; 5234 } 5235} 5236 5237 5238static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { 5239 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; 5240 5241 // Check below commented out from JDK1.2fcs as well 5242 /* 5243 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { 5244 return JNI_EVERSION; 5245 } 5246 */ 5247 5248 Thread* t = ThreadLocalStorage::get_thread_slow(); 5249 if (t != NULL) { 5250 // If the thread has been attached this operation is a no-op 5251 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); 5252 return JNI_OK; 5253 } 5254 5255 // Create a thread and mark it as attaching so it will be skipped by the 5256 // ThreadsListEnumerator - see CR 6404306 5257 JavaThread* thread = new JavaThread(true); 5258 5259 // Set correct safepoint info. The thread is going to call into Java when 5260 // initializing the Java level thread object. Hence, the correct state must 5261 // be set in order for the Safepoint code to deal with it correctly. 5262 thread->set_thread_state(_thread_in_vm); 5263 // Must do this before initialize_thread_local_storage 5264 thread->record_stack_base_and_size(); 5265 5266 thread->initialize_thread_local_storage(); 5267 5268 if (!os::create_attached_thread(thread)) { 5269 delete thread; 5270 return JNI_ERR; 5271 } 5272 // Enable stack overflow checks 5273 thread->create_stack_guard_pages(); 5274 5275 thread->initialize_tlab(); 5276 5277 thread->cache_global_variables(); 5278 5279 // Crucial that we do not have a safepoint check for this thread, since it has 5280 // not been added to the Thread list yet. 5281 { Threads_lock->lock_without_safepoint_check(); 5282 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to 5283 // avoid this thread trying to do a GC before it is added to the thread-list 5284 thread->set_active_handles(JNIHandleBlock::allocate_block()); 5285 Threads::add(thread, daemon); 5286 Threads_lock->unlock(); 5287 } 5288 // Create thread group and name info from attach arguments 5289 oop group = NULL; 5290 char* thread_name = NULL; 5291 if (args != NULL && Threads::is_supported_jni_version(args->version)) { 5292 group = JNIHandles::resolve(args->group); 5293 thread_name = args->name; // may be NULL 5294 } 5295 if (group == NULL) group = Universe::main_thread_group(); 5296 5297 // Create Java level thread object and attach it to this thread 5298 bool attach_failed = false; 5299 { 5300 EXCEPTION_MARK; 5301 HandleMark hm(THREAD); 5302 Handle thread_group(THREAD, group); 5303 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); 5304 if (HAS_PENDING_EXCEPTION) { 5305 CLEAR_PENDING_EXCEPTION; 5306 // cleanup outside the handle mark. 5307 attach_failed = true; 5308 } 5309 } 5310 5311 if (attach_failed) { 5312 // Added missing cleanup 5313 thread->cleanup_failed_attach_current_thread(); 5314 return JNI_ERR; 5315 } 5316 5317 // mark the thread as no longer attaching 5318 // this uses a fence to push the change through so we don't have 5319 // to regrab the threads_lock 5320 thread->set_done_attaching_via_jni(); 5321 5322 // Set java thread status. 5323 java_lang_Thread::set_thread_status(thread->threadObj(), 5324 java_lang_Thread::RUNNABLE); 5325 5326 // Notify the debugger 5327 if (JvmtiExport::should_post_thread_life()) { 5328 JvmtiExport::post_thread_start(thread); 5329 } 5330 5331 EVENT_BEGIN(TraceEventThreadStart, event); 5332 EVENT_COMMIT(event, 5333 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj()))); 5334 5335 *(JNIEnv**)penv = thread->jni_environment(); 5336 5337 // Now leaving the VM, so change thread_state. This is normally automatically taken care 5338 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by 5339 // using ThreadStateTransition::transition, we do a callback to the safepoint code if 5340 // needed. 5341 5342 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5343 5344 // Perform any platform dependent FPU setup 5345 os::setup_fpu(); 5346 5347 return JNI_OK; 5348} 5349 5350 5351jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { 5352#ifndef USDT2 5353 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); 5354#else /* USDT2 */ 5355 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY( 5356 vm, penv, _args); 5357#endif /* USDT2 */ 5358 if (!vm_created) { 5359#ifndef USDT2 5360 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); 5361#else /* USDT2 */ 5362 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5363 (uint32_t) JNI_ERR); 5364#endif /* USDT2 */ 5365 return JNI_ERR; 5366 } 5367 5368 JNIWrapper("AttachCurrentThread"); 5369 jint ret = attach_current_thread(vm, penv, _args, false); 5370#ifndef USDT2 5371 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); 5372#else /* USDT2 */ 5373 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5374 ret); 5375#endif /* USDT2 */ 5376 return ret; 5377} 5378 5379 5380jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { 5381#ifndef USDT2 5382 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); 5383#else /* USDT2 */ 5384 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY( 5385 vm); 5386#endif /* USDT2 */ 5387 VM_Exit::block_if_vm_exited(); 5388 5389 JNIWrapper("DetachCurrentThread"); 5390 5391 // If the thread has been deattacted the operations is a no-op 5392 if (ThreadLocalStorage::thread() == NULL) { 5393#ifndef USDT2 5394 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5395#else /* USDT2 */ 5396 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5397 JNI_OK); 5398#endif /* USDT2 */ 5399 return JNI_OK; 5400 } 5401 5402 JavaThread* thread = JavaThread::current(); 5403 if (thread->has_last_Java_frame()) { 5404#ifndef USDT2 5405 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); 5406#else /* USDT2 */ 5407 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5408 (uint32_t) JNI_ERR); 5409#endif /* USDT2 */ 5410 // Can't detach a thread that's running java, that can't work. 5411 return JNI_ERR; 5412 } 5413 5414 // Safepoint support. Have to do call-back to safepoint code, if in the 5415 // middel of a safepoint operation 5416 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5417 5418 // XXX: Note that JavaThread::exit() call below removes the guards on the 5419 // stack pages set up via enable_stack_{red,yellow}_zone() calls 5420 // above in jni_AttachCurrentThread. Unfortunately, while the setting 5421 // of the guards is visible in jni_AttachCurrentThread above, 5422 // the removal of the guards is buried below in JavaThread::exit() 5423 // here. The abstraction should be more symmetrically either exposed 5424 // or hidden (e.g. it could probably be hidden in the same 5425 // (platform-dependent) methods where we do alternate stack 5426 // maintenance work?) 5427 thread->exit(false, JavaThread::jni_detach); 5428 delete thread; 5429 5430#ifndef USDT2 5431 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5432#else /* USDT2 */ 5433 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5434 JNI_OK); 5435#endif /* USDT2 */ 5436 return JNI_OK; 5437} 5438 5439#ifndef USDT2 5440DT_RETURN_MARK_DECL(GetEnv, jint); 5441#else /* USDT2 */ 5442DT_RETURN_MARK_DECL(GetEnv, jint 5443 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref)); 5444#endif /* USDT2 */ 5445 5446jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { 5447#ifndef USDT2 5448 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); 5449#else /* USDT2 */ 5450 HOTSPOT_JNI_GETENV_ENTRY( 5451 vm, penv, version); 5452#endif /* USDT2 */ 5453 jint ret = JNI_ERR; 5454 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); 5455 5456 if (!vm_created) { 5457 *penv = NULL; 5458 ret = JNI_EDETACHED; 5459 return ret; 5460 } 5461 5462 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) { 5463 return ret; 5464 } 5465 5466#ifndef JVMPI_VERSION_1 5467// need these in order to be polite about older agents 5468#define JVMPI_VERSION_1 ((jint)0x10000001) 5469#define JVMPI_VERSION_1_1 ((jint)0x10000002) 5470#define JVMPI_VERSION_1_2 ((jint)0x10000003) 5471#endif // !JVMPI_VERSION_1 5472 5473 Thread* thread = ThreadLocalStorage::thread(); 5474 if (thread != NULL && thread->is_Java_thread()) { 5475 if (Threads::is_supported_jni_version_including_1_1(version)) { 5476 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); 5477 ret = JNI_OK; 5478 return ret; 5479 5480 } else if (version == JVMPI_VERSION_1 || 5481 version == JVMPI_VERSION_1_1 || 5482 version == JVMPI_VERSION_1_2) { 5483 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); 5484 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5485 ret = JNI_EVERSION; 5486 return ret; 5487 } else if (JvmtiExport::is_jvmdi_version(version)) { 5488 tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); 5489 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5490 ret = JNI_EVERSION; 5491 return ret; 5492 } else { 5493 *penv = NULL; 5494 ret = JNI_EVERSION; 5495 return ret; 5496 } 5497 } else { 5498 *penv = NULL; 5499 ret = JNI_EDETACHED; 5500 return ret; 5501 } 5502} 5503 5504 5505jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { 5506#ifndef USDT2 5507 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); 5508#else /* USDT2 */ 5509 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY( 5510 vm, penv, _args); 5511#endif /* USDT2 */ 5512 if (!vm_created) { 5513#ifndef USDT2 5514 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); 5515#else /* USDT2 */ 5516 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5517 (uint32_t) JNI_ERR); 5518#endif /* USDT2 */ 5519 return JNI_ERR; 5520 } 5521 5522 JNIWrapper("AttachCurrentThreadAsDaemon"); 5523 jint ret = attach_current_thread(vm, penv, _args, true); 5524#ifndef USDT2 5525 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); 5526#else /* USDT2 */ 5527 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5528 ret); 5529#endif /* USDT2 */ 5530 return ret; 5531} 5532 5533 5534} // End extern "C" 5535 5536const struct JNIInvokeInterface_ jni_InvokeInterface = { 5537 NULL, 5538 NULL, 5539 NULL, 5540 5541 jni_DestroyJavaVM, 5542 jni_AttachCurrentThread, 5543 jni_DetachCurrentThread, 5544 jni_GetEnv, 5545 jni_AttachCurrentThreadAsDaemon 5546}; 5547