jni.cpp revision 4802:f2110083203d
1/* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26#include "precompiled.hpp" 27#include "ci/ciReplay.hpp" 28#include "classfile/altHashing.hpp" 29#include "classfile/classLoader.hpp" 30#include "classfile/javaClasses.hpp" 31#include "classfile/symbolTable.hpp" 32#include "classfile/systemDictionary.hpp" 33#include "classfile/vmSymbols.hpp" 34#include "interpreter/linkResolver.hpp" 35#include "utilities/macros.hpp" 36#if INCLUDE_ALL_GCS 37#include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 38#endif // INCLUDE_ALL_GCS 39#include "memory/allocation.hpp" 40#include "memory/allocation.inline.hpp" 41#include "memory/gcLocker.inline.hpp" 42#include "memory/oopFactory.hpp" 43#include "memory/universe.inline.hpp" 44#include "oops/instanceKlass.hpp" 45#include "oops/instanceOop.hpp" 46#include "oops/markOop.hpp" 47#include "oops/method.hpp" 48#include "oops/objArrayKlass.hpp" 49#include "oops/objArrayOop.hpp" 50#include "oops/oop.inline.hpp" 51#include "oops/symbol.hpp" 52#include "oops/typeArrayKlass.hpp" 53#include "oops/typeArrayOop.hpp" 54#include "prims/jni.h" 55#include "prims/jniCheck.hpp" 56#include "prims/jniExport.hpp" 57#include "prims/jniFastGetField.hpp" 58#include "prims/jvm.h" 59#include "prims/jvm_misc.hpp" 60#include "prims/jvmtiExport.hpp" 61#include "prims/jvmtiThreadState.hpp" 62#include "runtime/compilationPolicy.hpp" 63#include "runtime/fieldDescriptor.hpp" 64#include "runtime/fprofiler.hpp" 65#include "runtime/handles.inline.hpp" 66#include "runtime/interfaceSupport.hpp" 67#include "runtime/java.hpp" 68#include "runtime/javaCalls.hpp" 69#include "runtime/jfieldIDWorkaround.hpp" 70#include "runtime/reflection.hpp" 71#include "runtime/sharedRuntime.hpp" 72#include "runtime/signature.hpp" 73#include "runtime/thread.inline.hpp" 74#include "runtime/vm_operations.hpp" 75#include "services/runtimeService.hpp" 76#include "trace/tracing.hpp" 77#include "utilities/defaultStream.hpp" 78#include "utilities/dtrace.hpp" 79#include "utilities/events.hpp" 80#include "utilities/histogram.hpp" 81#ifdef TARGET_OS_FAMILY_linux 82# include "os_linux.inline.hpp" 83#endif 84#ifdef TARGET_OS_FAMILY_solaris 85# include "os_solaris.inline.hpp" 86#endif 87#ifdef TARGET_OS_FAMILY_windows 88# include "os_windows.inline.hpp" 89#endif 90#ifdef TARGET_OS_FAMILY_bsd 91# include "os_bsd.inline.hpp" 92#endif 93 94static jint CurrentVersion = JNI_VERSION_1_8; 95 96 97// The DT_RETURN_MARK macros create a scoped object to fire the dtrace 98// '-return' probe regardless of the return path is taken out of the function. 99// Methods that have multiple return paths use this to avoid having to 100// instrument each return path. Methods that use CHECK or THROW must use this 101// since those macros can cause an immedate uninstrumented return. 102// 103// In order to get the return value, a reference to the variable containing 104// the return value must be passed to the contructor of the object, and 105// the return value must be set before return (since the mark object has 106// a reference to it). 107// 108// Example: 109// DT_RETURN_MARK_DECL(SomeFunc, int); 110// JNI_ENTRY(int, SomeFunc, ...) 111// int return_value = 0; 112// DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); 113// foo(CHECK_0) 114// return_value = 5; 115// return return_value; 116// JNI_END 117#ifndef USDT2 118#define DT_RETURN_MARK_DECL(name, type) \ 119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ 120 DTRACE_ONLY( \ 121 class DTraceReturnProbeMark_##name { \ 122 public: \ 123 const type& _ret_ref; \ 124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 125 ~DTraceReturnProbeMark_##name() { \ 126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ 127 } \ 128 } \ 129 ) 130// Void functions are simpler since there's no return value 131#define DT_VOID_RETURN_MARK_DECL(name) \ 132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ 133 DTRACE_ONLY( \ 134 class DTraceReturnProbeMark_##name { \ 135 public: \ 136 ~DTraceReturnProbeMark_##name() { \ 137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ 138 } \ 139 } \ 140 ) 141 142#else /* USDT2 */ 143 144#define DT_RETURN_MARK_DECL(name, type, probe) \ 145 DTRACE_ONLY( \ 146 class DTraceReturnProbeMark_##name { \ 147 public: \ 148 const type& _ret_ref; \ 149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ 150 ~DTraceReturnProbeMark_##name() { \ 151 probe; \ 152 } \ 153 } \ 154 ) 155// Void functions are simpler since there's no return value 156#define DT_VOID_RETURN_MARK_DECL(name, probe) \ 157 DTRACE_ONLY( \ 158 class DTraceReturnProbeMark_##name { \ 159 public: \ 160 ~DTraceReturnProbeMark_##name() { \ 161 probe; \ 162 } \ 163 } \ 164 ) 165#endif /* USDT2 */ 166 167// Place these macros in the function to mark the return. Non-void 168// functions need the type and address of the return value. 169#define DT_RETURN_MARK(name, type, ref) \ 170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) 171#define DT_VOID_RETURN_MARK(name) \ 172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) 173 174 175// Use these to select distinct code for floating-point vs. non-floating point 176// situations. Used from within common macros where we need slightly 177// different behavior for Float/Double 178#define FP_SELECT_Boolean(intcode, fpcode) intcode 179#define FP_SELECT_Byte(intcode, fpcode) intcode 180#define FP_SELECT_Char(intcode, fpcode) intcode 181#define FP_SELECT_Short(intcode, fpcode) intcode 182#define FP_SELECT_Object(intcode, fpcode) intcode 183#define FP_SELECT_Int(intcode, fpcode) intcode 184#define FP_SELECT_Long(intcode, fpcode) intcode 185#define FP_SELECT_Float(intcode, fpcode) fpcode 186#define FP_SELECT_Double(intcode, fpcode) fpcode 187#define FP_SELECT(TypeName, intcode, fpcode) \ 188 FP_SELECT_##TypeName(intcode, fpcode) 189 190#define COMMA , 191 192// Choose DT_RETURN_MARK macros based on the type: float/double -> void 193// (dtrace doesn't do FP yet) 194#ifndef USDT2 195#define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ 196 FP_SELECT(TypeName, \ 197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) 198#else /* USDT2 */ 199#define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \ 200 FP_SELECT(TypeName, \ 201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) ) 202#endif /* USDT2 */ 203#define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ 204 FP_SELECT(TypeName, \ 205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) 206 207 208// out-of-line helpers for class jfieldIDWorkaround: 209 210bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) { 211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { 212 uintptr_t as_uint = (uintptr_t) id; 213 intptr_t offset = raw_instance_offset(id); 214 if (is_checked_jfieldID(id)) { 215 if (!klass_hash_ok(k, id)) { 216 return false; 217 } 218 } 219 return InstanceKlass::cast(k)->contains_field_offset(offset); 220 } else { 221 JNIid* result = (JNIid*) id; 222#ifdef ASSERT 223 return result != NULL && result->is_static_field_id(); 224#else 225 return result != NULL; 226#endif 227 } 228} 229 230 231intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) { 232 if (offset <= small_offset_mask) { 233 Klass* field_klass = k; 234 Klass* super_klass = field_klass->super(); 235 // With compressed oops the most super class with nonstatic fields would 236 // be the owner of fields embedded in the header. 237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() && 238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) { 239 field_klass = super_klass; // super contains the field also 240 super_klass = field_klass->super(); 241 } 242 debug_only(No_Safepoint_Verifier nosafepoint;) 243 uintptr_t klass_hash = field_klass->identity_hash(); 244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; 245 } else { 246#if 0 247 #ifndef PRODUCT 248 { 249 ResourceMark rm; 250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name()); 251 } 252 #endif 253#endif 254 return 0; 255 } 256} 257 258bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) { 259 uintptr_t as_uint = (uintptr_t) id; 260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; 261 do { 262 debug_only(No_Safepoint_Verifier nosafepoint;) 263 // Could use a non-blocking query for identity_hash here... 264 if ((k->identity_hash() & klass_mask) == klass_hash) 265 return true; 266 k = k->super(); 267 } while (k != NULL); 268 return false; 269} 270 271void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) { 272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); 273 uintptr_t as_uint = (uintptr_t) id; 274 intptr_t offset = raw_instance_offset(id); 275 if (VerifyJNIFields) { 276 if (is_checked_jfieldID(id)) { 277 guarantee(klass_hash_ok(k, id), 278 "Bug in native code: jfieldID class must match object"); 279 } else { 280#if 0 281 #ifndef PRODUCT 282 if (Verbose) { 283 ResourceMark rm; 284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name()); 285 } 286 #endif 287#endif 288 } 289 } 290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset), 291 "Bug in native code: jfieldID offset must address interior of object"); 292} 293 294// Pick a reasonable higher bound for local capacity requested 295// for EnsureLocalCapacity and PushLocalFrame. We don't want it too 296// high because a test (or very unusual application) may try to allocate 297// that many handles and run out of swap space. An implementation is 298// permitted to allocate more handles than the ensured capacity, so this 299// value is set high enough to prevent compatibility problems. 300const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K; 301 302 303// Wrapper to trace JNI functions 304 305#ifdef ASSERT 306 Histogram* JNIHistogram; 307 static volatile jint JNIHistogram_lock = 0; 308 309 class JNITraceWrapper : public StackObj { 310 public: 311 JNITraceWrapper(const char* format, ...) { 312 if (TraceJNICalls) { 313 va_list ap; 314 va_start(ap, format); 315 tty->print("JNI "); 316 tty->vprint_cr(format, ap); 317 va_end(ap); 318 } 319 } 320 }; 321 322 class JNIHistogramElement : public HistogramElement { 323 public: 324 JNIHistogramElement(const char* name); 325 }; 326 327 JNIHistogramElement::JNIHistogramElement(const char* elementName) { 328 _name = elementName; 329 uintx count = 0; 330 331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { 332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { 333 count +=1; 334 if ( (WarnOnStalledSpinLock > 0) 335 && (count % WarnOnStalledSpinLock == 0)) { 336 warning("JNIHistogram_lock seems to be stalled"); 337 } 338 } 339 } 340 341 342 if(JNIHistogram == NULL) 343 JNIHistogram = new Histogram("JNI Call Counts",100); 344 345 JNIHistogram->add_element(this); 346 Atomic::dec(&JNIHistogram_lock); 347 } 348 349 #define JNICountWrapper(arg) \ 350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \ 351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ 352 if (e != NULL) e->increment_count() 353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) 354#else 355 #define JNIWrapper(arg) 356#endif 357 358 359// Implementation of JNI entries 360 361#ifndef USDT2 362DT_RETURN_MARK_DECL(DefineClass, jclass); 363#else /* USDT2 */ 364DT_RETURN_MARK_DECL(DefineClass, jclass 365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref)); 366#endif /* USDT2 */ 367 368JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, 369 const jbyte *buf, jsize bufLen)) 370 JNIWrapper("DefineClass"); 371 372#ifndef USDT2 373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry, 374 env, name, loaderRef, buf, bufLen); 375#else /* USDT2 */ 376 HOTSPOT_JNI_DEFINECLASS_ENTRY( 377 env, (char*) name, loaderRef, (char*) buf, bufLen); 378#endif /* USDT2 */ 379 jclass cls = NULL; 380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); 381 382 TempNewSymbol class_name = NULL; 383 // Since exceptions can be thrown, class initialization can take place 384 // if name is NULL no check for class name in .class stream has to be made. 385 if (name != NULL) { 386 const int str_len = (int)strlen(name); 387 if (str_len > Symbol::max_length()) { 388 // It's impossible to create this class; the name cannot fit 389 // into the constant pool. 390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 391 } 392 class_name = SymbolTable::new_symbol(name, CHECK_NULL); 393 } 394 ResourceMark rm(THREAD); 395 ClassFileStream st((u1*) buf, bufLen, NULL); 396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); 397 398 if (UsePerfData && !class_loader.is_null()) { 399 // check whether the current caller thread holds the lock or not. 400 // If not, increment the corresponding counter 401 if (ObjectSynchronizer:: 402 query_lock_ownership((JavaThread*)THREAD, class_loader) != 403 ObjectSynchronizer::owner_self) { 404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); 405 } 406 } 407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, 408 Handle(), &st, true, 409 CHECK_NULL); 410 411 if (TraceClassResolution && k != NULL) { 412 trace_class_resolution(k); 413 } 414 415 cls = (jclass)JNIHandles::make_local( 416 env, k->java_mirror()); 417 return cls; 418JNI_END 419 420 421 422static bool first_time_FindClass = true; 423 424#ifndef USDT2 425DT_RETURN_MARK_DECL(FindClass, jclass); 426#else /* USDT2 */ 427DT_RETURN_MARK_DECL(FindClass, jclass 428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref)); 429#endif /* USDT2 */ 430 431JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) 432 JNIWrapper("FindClass"); 433#ifndef USDT2 434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); 435#else /* USDT2 */ 436 HOTSPOT_JNI_FINDCLASS_ENTRY( 437 env, (char *)name); 438#endif /* USDT2 */ 439 440 jclass result = NULL; 441 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); 442 443 // Remember if we are the first invocation of jni_FindClass 444 bool first_time = first_time_FindClass; 445 first_time_FindClass = false; 446 447 // Sanity check the name: it cannot be null or larger than the maximum size 448 // name we can fit in the constant pool. 449 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { 450 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); 451 } 452 453 //%note jni_3 454 Handle loader; 455 Handle protection_domain; 456 // Find calling class 457 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); 458 if (k.not_null()) { 459 loader = Handle(THREAD, k->class_loader()); 460 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed 461 // in the correct class context. 462 if (loader.is_null() && 463 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { 464 JavaValue result(T_OBJECT); 465 JavaCalls::call_static(&result, k, 466 vmSymbols::getFromClass_name(), 467 vmSymbols::void_class_signature(), 468 thread); 469 if (HAS_PENDING_EXCEPTION) { 470 Handle ex(thread, thread->pending_exception()); 471 CLEAR_PENDING_EXCEPTION; 472 THROW_HANDLE_0(ex); 473 } 474 oop mirror = (oop) result.get_jobject(); 475 loader = Handle(THREAD, 476 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader()); 477 protection_domain = Handle(THREAD, 478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain()); 479 } 480 } else { 481 // We call ClassLoader.getSystemClassLoader to obtain the system class loader. 482 loader = Handle(THREAD, SystemDictionary::java_system_loader()); 483 } 484 485 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 486 result = find_class_from_class_loader(env, sym, true, loader, 487 protection_domain, true, thread); 488 489 if (TraceClassResolution && result != NULL) { 490 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 491 } 492 493 // If we were the first invocation of jni_FindClass, we enable compilation again 494 // rather than just allowing invocation counter to overflow and decay. 495 // Controlled by flag DelayCompilationDuringStartup. 496 if (first_time && !CompileTheWorld) 497 CompilationPolicy::completed_vm_startup(); 498 499 return result; 500JNI_END 501 502#ifndef USDT2 503DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); 504#else /* USDT2 */ 505DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID 506 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref)); 507#endif /* USDT2 */ 508 509JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) 510 JNIWrapper("FromReflectedMethod"); 511#ifndef USDT2 512 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); 513#else /* USDT2 */ 514 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY( 515 env, method); 516#endif /* USDT2 */ 517 jmethodID ret = NULL; 518 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); 519 520 // method is a handle to a java.lang.reflect.Method object 521 oop reflected = JNIHandles::resolve_non_null(method); 522 oop mirror = NULL; 523 int slot = 0; 524 525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { 526 mirror = java_lang_reflect_Constructor::clazz(reflected); 527 slot = java_lang_reflect_Constructor::slot(reflected); 528 } else { 529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type"); 530 mirror = java_lang_reflect_Method::clazz(reflected); 531 slot = java_lang_reflect_Method::slot(reflected); 532 } 533 Klass* k = java_lang_Class::as_Klass(mirror); 534 535 KlassHandle k1(THREAD, k); 536 // Make sure class is initialized before handing id's out to methods 537 k1()->initialize(CHECK_NULL); 538 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot); 539 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted 540 return ret; 541JNI_END 542 543#ifndef USDT2 544DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); 545#else /* USDT2 */ 546DT_RETURN_MARK_DECL(FromReflectedField, jfieldID 547 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref)); 548#endif /* USDT2 */ 549 550JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) 551 JNIWrapper("FromReflectedField"); 552#ifndef USDT2 553 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); 554#else /* USDT2 */ 555 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY( 556 env, field); 557#endif /* USDT2 */ 558 jfieldID ret = NULL; 559 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); 560 561 // field is a handle to a java.lang.reflect.Field object 562 oop reflected = JNIHandles::resolve_non_null(field); 563 oop mirror = java_lang_reflect_Field::clazz(reflected); 564 Klass* k = java_lang_Class::as_Klass(mirror); 565 int slot = java_lang_reflect_Field::slot(reflected); 566 int modifiers = java_lang_reflect_Field::modifiers(reflected); 567 568 KlassHandle k1(THREAD, k); 569 // Make sure class is initialized before handing id's out to fields 570 k1()->initialize(CHECK_NULL); 571 572 // First check if this is a static field 573 if (modifiers & JVM_ACC_STATIC) { 574 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 575 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset); 576 assert(id != NULL, "corrupt Field object"); 577 debug_only(id->set_is_static_field_id();) 578 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 579 ret = jfieldIDWorkaround::to_static_jfieldID(id); 580 return ret; 581 } 582 583 // The slot is the index of the field description in the field-array 584 // The jfieldID is the offset of the field within the object 585 // It may also have hash bits for k, if VerifyJNIFields is turned on. 586 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot ); 587 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); 588 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); 589 return ret; 590JNI_END 591 592#ifndef USDT2 593DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); 594#else /* USDT2 */ 595DT_RETURN_MARK_DECL(ToReflectedMethod, jobject 596 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref)); 597#endif /* USDT2 */ 598 599JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) 600 JNIWrapper("ToReflectedMethod"); 601#ifndef USDT2 602 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); 603#else /* USDT2 */ 604 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY( 605 env, cls, (uintptr_t) method_id, isStatic); 606#endif /* USDT2 */ 607 jobject ret = NULL; 608 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); 609 610 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id)); 611 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); 612 oop reflection_method; 613 if (m->is_initializer()) { 614 reflection_method = Reflection::new_constructor(m, CHECK_NULL); 615 } else { 616 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); 617 } 618 ret = JNIHandles::make_local(env, reflection_method); 619 return ret; 620JNI_END 621 622#ifndef USDT2 623DT_RETURN_MARK_DECL(GetSuperclass, jclass); 624#else /* USDT2 */ 625DT_RETURN_MARK_DECL(GetSuperclass, jclass 626 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref)); 627#endif /* USDT2 */ 628 629JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) 630 JNIWrapper("GetSuperclass"); 631#ifndef USDT2 632 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); 633#else /* USDT2 */ 634 HOTSPOT_JNI_GETSUPERCLASS_ENTRY( 635 env, sub); 636#endif /* USDT2 */ 637 jclass obj = NULL; 638 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); 639 640 oop mirror = JNIHandles::resolve_non_null(sub); 641 // primitive classes return NULL 642 if (java_lang_Class::is_primitive(mirror)) return NULL; 643 644 // Rules of Class.getSuperClass as implemented by KLass::java_super: 645 // arrays return Object 646 // interfaces return NULL 647 // proper classes return Klass::super() 648 Klass* k = java_lang_Class::as_Klass(mirror); 649 if (k->is_interface()) return NULL; 650 651 // return mirror for superclass 652 Klass* super = k->java_super(); 653 // super2 is the value computed by the compiler's getSuperClass intrinsic: 654 debug_only(Klass* super2 = ( k->oop_is_array() 655 ? SystemDictionary::Object_klass() 656 : k->super() ) ); 657 assert(super == super2, 658 "java_super computation depends on interface, array, other super"); 659 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror()); 660 return obj; 661JNI_END 662 663JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) 664 JNIWrapper("IsSubclassOf"); 665#ifndef USDT2 666 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); 667#else /* USDT2 */ 668 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY( 669 env, sub, super); 670#endif /* USDT2 */ 671 oop sub_mirror = JNIHandles::resolve_non_null(sub); 672 oop super_mirror = JNIHandles::resolve_non_null(super); 673 if (java_lang_Class::is_primitive(sub_mirror) || 674 java_lang_Class::is_primitive(super_mirror)) { 675 jboolean ret = (sub_mirror == super_mirror); 676#ifndef USDT2 677 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 678#else /* USDT2 */ 679 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 680 ret); 681#endif /* USDT2 */ 682 return ret; 683 } 684 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror); 685 Klass* super_klass = java_lang_Class::as_Klass(super_mirror); 686 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom"); 687 jboolean ret = sub_klass->is_subtype_of(super_klass) ? 688 JNI_TRUE : JNI_FALSE; 689#ifndef USDT2 690 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); 691#else /* USDT2 */ 692 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN( 693 ret); 694#endif /* USDT2 */ 695 return ret; 696JNI_END 697 698#ifndef USDT2 699DT_RETURN_MARK_DECL(Throw, jint); 700#else /* USDT2 */ 701DT_RETURN_MARK_DECL(Throw, jint 702 , HOTSPOT_JNI_THROW_RETURN(_ret_ref)); 703#endif /* USDT2 */ 704 705JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) 706 JNIWrapper("Throw"); 707#ifndef USDT2 708 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); 709#else /* USDT2 */ 710 HOTSPOT_JNI_THROW_ENTRY( 711 env, obj); 712#endif /* USDT2 */ 713 jint ret = JNI_OK; 714 DT_RETURN_MARK(Throw, jint, (const jint&)ret); 715 716 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); 717 ShouldNotReachHere(); 718JNI_END 719 720#ifndef USDT2 721DT_RETURN_MARK_DECL(ThrowNew, jint); 722#else /* USDT2 */ 723DT_RETURN_MARK_DECL(ThrowNew, jint 724 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref)); 725#endif /* USDT2 */ 726 727JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) 728 JNIWrapper("ThrowNew"); 729#ifndef USDT2 730 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); 731#else /* USDT2 */ 732 HOTSPOT_JNI_THROWNEW_ENTRY( 733 env, clazz, (char *) message); 734#endif /* USDT2 */ 735 jint ret = JNI_OK; 736 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); 737 738 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 739 Symbol* name = k->name(); 740 Handle class_loader (THREAD, k->class_loader()); 741 Handle protection_domain (THREAD, k->protection_domain()); 742 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); 743 ShouldNotReachHere(); 744JNI_END 745 746 747// JNI functions only transform a pending async exception to a synchronous 748// exception in ExceptionOccurred and ExceptionCheck calls, since 749// delivering an async exception in other places won't change the native 750// code's control flow and would be harmful when native code further calls 751// JNI functions with a pending exception. Async exception is also checked 752// during the call, so ExceptionOccurred/ExceptionCheck won't return 753// false but deliver the async exception at the very end during 754// state transition. 755 756static void jni_check_async_exceptions(JavaThread *thread) { 757 assert(thread == Thread::current(), "must be itself"); 758 thread->check_and_handle_async_exceptions(); 759} 760 761JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) 762 JNIWrapper("ExceptionOccurred"); 763#ifndef USDT2 764 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); 765#else /* USDT2 */ 766 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY( 767 env); 768#endif /* USDT2 */ 769 jni_check_async_exceptions(thread); 770 oop exception = thread->pending_exception(); 771 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); 772#ifndef USDT2 773 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); 774#else /* USDT2 */ 775 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN( 776 ret); 777#endif /* USDT2 */ 778 return ret; 779JNI_END 780 781 782JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) 783 JNIWrapper("ExceptionDescribe"); 784#ifndef USDT2 785 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); 786#else /* USDT2 */ 787 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY( 788 env); 789#endif /* USDT2 */ 790 if (thread->has_pending_exception()) { 791 Handle ex(thread, thread->pending_exception()); 792 thread->clear_pending_exception(); 793 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) { 794 // Don't print anything if we are being killed. 795 } else { 796 jio_fprintf(defaultStream::error_stream(), "Exception "); 797 if (thread != NULL && thread->threadObj() != NULL) { 798 ResourceMark rm(THREAD); 799 jio_fprintf(defaultStream::error_stream(), 800 "in thread \"%s\" ", thread->get_thread_name()); 801 } 802 if (ex->is_a(SystemDictionary::Throwable_klass())) { 803 JavaValue result(T_VOID); 804 JavaCalls::call_virtual(&result, 805 ex, 806 KlassHandle(THREAD, 807 SystemDictionary::Throwable_klass()), 808 vmSymbols::printStackTrace_name(), 809 vmSymbols::void_method_signature(), 810 THREAD); 811 // If an exception is thrown in the call it gets thrown away. Not much 812 // we can do with it. The native code that calls this, does not check 813 // for the exception - hence, it might still be in the thread when DestroyVM gets 814 // called, potentially causing a few asserts to trigger - since no pending exception 815 // is expected. 816 CLEAR_PENDING_EXCEPTION; 817 } else { 818 ResourceMark rm(THREAD); 819 jio_fprintf(defaultStream::error_stream(), 820 ". Uncaught exception of type %s.", 821 ex->klass()->external_name()); 822 } 823 } 824 } 825#ifndef USDT2 826 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); 827#else /* USDT2 */ 828 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN( 829 ); 830#endif /* USDT2 */ 831JNI_END 832 833 834JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) 835 JNIWrapper("ExceptionClear"); 836#ifndef USDT2 837 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); 838#else /* USDT2 */ 839 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY( 840 env); 841#endif /* USDT2 */ 842 843 // The jni code might be using this API to clear java thrown exception. 844 // So just mark jvmti thread exception state as exception caught. 845 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); 846 if (state != NULL && state->is_exception_detected()) { 847 state->set_exception_caught(); 848 } 849 thread->clear_pending_exception(); 850#ifndef USDT2 851 DTRACE_PROBE(hotspot_jni, ExceptionClear__return); 852#else /* USDT2 */ 853 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN( 854 ); 855#endif /* USDT2 */ 856JNI_END 857 858 859JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) 860 JNIWrapper("FatalError"); 861#ifndef USDT2 862 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); 863#else /* USDT2 */ 864 HOTSPOT_JNI_FATALERROR_ENTRY( 865 env, (char *) msg); 866#endif /* USDT2 */ 867 tty->print_cr("FATAL ERROR in native method: %s", msg); 868 thread->print_stack(); 869 os::abort(); // Dump core and abort 870JNI_END 871 872 873JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) 874 JNIWrapper("PushLocalFrame"); 875#ifndef USDT2 876 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); 877#else /* USDT2 */ 878 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY( 879 env, capacity); 880#endif /* USDT2 */ 881 //%note jni_11 882 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) { 883#ifndef USDT2 884 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); 885#else /* USDT2 */ 886 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 887 (uint32_t)JNI_ERR); 888#endif /* USDT2 */ 889 return JNI_ERR; 890 } 891 JNIHandleBlock* old_handles = thread->active_handles(); 892 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 893 assert(new_handles != NULL, "should not be NULL"); 894 new_handles->set_pop_frame_link(old_handles); 895 thread->set_active_handles(new_handles); 896 jint ret = JNI_OK; 897#ifndef USDT2 898 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); 899#else /* USDT2 */ 900 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN( 901 ret); 902#endif /* USDT2 */ 903 return ret; 904JNI_END 905 906 907JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) 908 JNIWrapper("PopLocalFrame"); 909#ifndef USDT2 910 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); 911#else /* USDT2 */ 912 HOTSPOT_JNI_POPLOCALFRAME_ENTRY( 913 env, result); 914#endif /* USDT2 */ 915 //%note jni_11 916 Handle result_handle(thread, JNIHandles::resolve(result)); 917 JNIHandleBlock* old_handles = thread->active_handles(); 918 JNIHandleBlock* new_handles = old_handles->pop_frame_link(); 919 if (new_handles != NULL) { 920 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. 921 // This way code will still work if PopLocalFrame is called without a corresponding 922 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise 923 // the release_block call will release the blocks. 924 thread->set_active_handles(new_handles); 925 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below 926 JNIHandleBlock::release_block(old_handles, thread); // may block 927 result = JNIHandles::make_local(thread, result_handle()); 928 } 929#ifndef USDT2 930 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); 931#else /* USDT2 */ 932 HOTSPOT_JNI_POPLOCALFRAME_RETURN( 933 result); 934#endif /* USDT2 */ 935 return result; 936JNI_END 937 938 939JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) 940 JNIWrapper("NewGlobalRef"); 941#ifndef USDT2 942 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); 943#else /* USDT2 */ 944 HOTSPOT_JNI_NEWGLOBALREF_ENTRY( 945 env, ref); 946#endif /* USDT2 */ 947 Handle ref_handle(thread, JNIHandles::resolve(ref)); 948 jobject ret = JNIHandles::make_global(ref_handle); 949#ifndef USDT2 950 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); 951#else /* USDT2 */ 952 HOTSPOT_JNI_NEWGLOBALREF_RETURN( 953 ret); 954#endif /* USDT2 */ 955 return ret; 956JNI_END 957 958// Must be JNI_ENTRY (with HandleMark) 959JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) 960 JNIWrapper("DeleteGlobalRef"); 961#ifndef USDT2 962 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); 963#else /* USDT2 */ 964 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY( 965 env, ref); 966#endif /* USDT2 */ 967 JNIHandles::destroy_global(ref); 968#ifndef USDT2 969 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); 970#else /* USDT2 */ 971 HOTSPOT_JNI_DELETEGLOBALREF_RETURN( 972 ); 973#endif /* USDT2 */ 974JNI_END 975 976JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) 977 JNIWrapper("DeleteLocalRef"); 978#ifndef USDT2 979 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); 980#else /* USDT2 */ 981 HOTSPOT_JNI_DELETELOCALREF_ENTRY( 982 env, obj); 983#endif /* USDT2 */ 984 JNIHandles::destroy_local(obj); 985#ifndef USDT2 986 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); 987#else /* USDT2 */ 988 HOTSPOT_JNI_DELETELOCALREF_RETURN( 989 ); 990#endif /* USDT2 */ 991JNI_END 992 993JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) 994 JNIWrapper("IsSameObject"); 995#ifndef USDT2 996 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); 997#else /* USDT2 */ 998 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY( 999 env, r1, r2); 1000#endif /* USDT2 */ 1001 oop a = JNIHandles::resolve(r1); 1002 oop b = JNIHandles::resolve(r2); 1003 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; 1004#ifndef USDT2 1005 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); 1006#else /* USDT2 */ 1007 HOTSPOT_JNI_ISSAMEOBJECT_RETURN( 1008 ret); 1009#endif /* USDT2 */ 1010 return ret; 1011JNI_END 1012 1013 1014JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) 1015 JNIWrapper("NewLocalRef"); 1016#ifndef USDT2 1017 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); 1018#else /* USDT2 */ 1019 HOTSPOT_JNI_NEWLOCALREF_ENTRY( 1020 env, ref); 1021#endif /* USDT2 */ 1022 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); 1023#ifndef USDT2 1024 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); 1025#else /* USDT2 */ 1026 HOTSPOT_JNI_NEWLOCALREF_RETURN( 1027 ret); 1028#endif /* USDT2 */ 1029 return ret; 1030JNI_END 1031 1032JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) 1033 JNIWrapper("EnsureLocalCapacity"); 1034#ifndef USDT2 1035 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); 1036#else /* USDT2 */ 1037 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY( 1038 env, capacity); 1039#endif /* USDT2 */ 1040 jint ret; 1041 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) { 1042 ret = JNI_OK; 1043 } else { 1044 ret = JNI_ERR; 1045 } 1046#ifndef USDT2 1047 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); 1048#else /* USDT2 */ 1049 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN( 1050 ret); 1051#endif /* USDT2 */ 1052 return ret; 1053JNI_END 1054 1055// Return the Handle Type 1056JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) 1057 JNIWrapper("GetObjectRefType"); 1058#ifndef USDT2 1059 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); 1060#else /* USDT2 */ 1061 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY( 1062 env, obj); 1063#endif /* USDT2 */ 1064 jobjectRefType ret; 1065 if (JNIHandles::is_local_handle(thread, obj) || 1066 JNIHandles::is_frame_handle(thread, obj)) 1067 ret = JNILocalRefType; 1068 else if (JNIHandles::is_global_handle(obj)) 1069 ret = JNIGlobalRefType; 1070 else if (JNIHandles::is_weak_global_handle(obj)) 1071 ret = JNIWeakGlobalRefType; 1072 else 1073 ret = JNIInvalidRefType; 1074#ifndef USDT2 1075 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); 1076#else /* USDT2 */ 1077 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN( 1078 (void *) ret); 1079#endif /* USDT2 */ 1080 return ret; 1081JNI_END 1082 1083 1084class JNI_ArgumentPusher : public SignatureIterator { 1085 protected: 1086 JavaCallArguments* _arguments; 1087 1088 virtual void get_bool () = 0; 1089 virtual void get_char () = 0; 1090 virtual void get_short () = 0; 1091 virtual void get_byte () = 0; 1092 virtual void get_int () = 0; 1093 virtual void get_long () = 0; 1094 virtual void get_float () = 0; 1095 virtual void get_double () = 0; 1096 virtual void get_object () = 0; 1097 1098 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) { 1099 this->_return_type = T_ILLEGAL; 1100 _arguments = NULL; 1101 } 1102 1103 public: 1104 virtual void iterate( uint64_t fingerprint ) = 0; 1105 1106 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } 1107 1108 inline void do_bool() { if (!is_return_type()) get_bool(); } 1109 inline void do_char() { if (!is_return_type()) get_char(); } 1110 inline void do_short() { if (!is_return_type()) get_short(); } 1111 inline void do_byte() { if (!is_return_type()) get_byte(); } 1112 inline void do_int() { if (!is_return_type()) get_int(); } 1113 inline void do_long() { if (!is_return_type()) get_long(); } 1114 inline void do_float() { if (!is_return_type()) get_float(); } 1115 inline void do_double() { if (!is_return_type()) get_double(); } 1116 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } 1117 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array 1118 inline void do_void() { } 1119 1120 JavaCallArguments* arguments() { return _arguments; } 1121 void push_receiver(Handle h) { _arguments->push_oop(h); } 1122}; 1123 1124 1125class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { 1126 protected: 1127 va_list _ap; 1128 1129 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg 1130 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg 1131 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg 1132 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg 1133 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } 1134 1135 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests 1136 1137 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } 1138 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg 1139 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } 1140 inline void get_object() { jobject l = va_arg(_ap, jobject); 1141 _arguments->push_oop(Handle((oop *)l, false)); } 1142 1143 inline void set_ap(va_list rap) { 1144#ifdef va_copy 1145 va_copy(_ap, rap); 1146#elif defined (__va_copy) 1147 __va_copy(_ap, rap); 1148#else 1149 _ap = rap; 1150#endif 1151 } 1152 1153 public: 1154 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap) 1155 : JNI_ArgumentPusher(signature) { 1156 set_ap(rap); 1157 } 1158 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap) 1159 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1160 set_ap(rap); 1161 } 1162 1163 // Optimized path if we have the bitvector form of signature 1164 void iterate( uint64_t fingerprint ) { 1165 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments 1166 else { 1167 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1168 result_feature_mask); 1169 1170 assert(fingerprint, "Fingerprint should not be 0"); 1171 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1172 while ( 1 ) { 1173 switch ( fingerprint & parameter_feature_mask ) { 1174 case bool_parm: 1175 case char_parm: 1176 case short_parm: 1177 case byte_parm: 1178 case int_parm: 1179 get_int(); 1180 break; 1181 case obj_parm: 1182 get_object(); 1183 break; 1184 case long_parm: 1185 get_long(); 1186 break; 1187 case float_parm: 1188 get_float(); 1189 break; 1190 case double_parm: 1191 get_double(); 1192 break; 1193 case done_parm: 1194 return; 1195 break; 1196 default: 1197 ShouldNotReachHere(); 1198 break; 1199 } 1200 fingerprint >>= parameter_feature_size; 1201 } 1202 } 1203 } 1204}; 1205 1206 1207class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { 1208 protected: 1209 const jvalue *_ap; 1210 1211 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); } 1212 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } 1213 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } 1214 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } 1215 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } 1216 1217 inline void get_long() { _arguments->push_long((_ap++)->j); } 1218 inline void get_float() { _arguments->push_float((_ap++)->f); } 1219 inline void get_double() { _arguments->push_double((_ap++)->d);} 1220 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } 1221 1222 inline void set_ap(const jvalue *rap) { _ap = rap; } 1223 1224 public: 1225 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap) 1226 : JNI_ArgumentPusher(signature) { 1227 set_ap(rap); 1228 } 1229 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap) 1230 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) { 1231 set_ap(rap); 1232 } 1233 1234 // Optimized path if we have the bitvector form of signature 1235 void iterate( uint64_t fingerprint ) { 1236 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments 1237 else { 1238 _return_type = (BasicType)((fingerprint >> static_feature_size) & 1239 result_feature_mask); 1240 assert(fingerprint, "Fingerprint should not be 0"); 1241 fingerprint = fingerprint >> (static_feature_size + result_feature_size); 1242 while ( 1 ) { 1243 switch ( fingerprint & parameter_feature_mask ) { 1244 case bool_parm: 1245 get_bool(); 1246 break; 1247 case char_parm: 1248 get_char(); 1249 break; 1250 case short_parm: 1251 get_short(); 1252 break; 1253 case byte_parm: 1254 get_byte(); 1255 break; 1256 case int_parm: 1257 get_int(); 1258 break; 1259 case obj_parm: 1260 get_object(); 1261 break; 1262 case long_parm: 1263 get_long(); 1264 break; 1265 case float_parm: 1266 get_float(); 1267 break; 1268 case double_parm: 1269 get_double(); 1270 break; 1271 case done_parm: 1272 return; 1273 break; 1274 default: 1275 ShouldNotReachHere(); 1276 break; 1277 } 1278 fingerprint >>= parameter_feature_size; 1279 } 1280 } 1281 } 1282}; 1283 1284 1285enum JNICallType { 1286 JNI_STATIC, 1287 JNI_VIRTUAL, 1288 JNI_NONVIRTUAL 1289}; 1290 1291 1292 1293static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1294 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id)); 1295 1296 // Create object to hold arguments for the JavaCall, and associate it with 1297 // the jni parser 1298 ResourceMark rm(THREAD); 1299 int number_of_parameters = method->size_of_parameters(); 1300 JavaCallArguments java_args(number_of_parameters); 1301 args->set_java_argument_object(&java_args); 1302 1303 assert(method->is_static(), "method should be static"); 1304 1305 // Fill out JavaCallArguments object 1306 args->iterate( Fingerprinter(method).fingerprint() ); 1307 // Initialize result type 1308 result->set_type(args->get_ret_type()); 1309 1310 // Invoke the method. Result is returned as oop. 1311 JavaCalls::call(result, method, &java_args, CHECK); 1312 1313 // Convert result 1314 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1315 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1316 } 1317} 1318 1319 1320static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { 1321 oop recv = JNIHandles::resolve(receiver); 1322 if (recv == NULL) { 1323 THROW(vmSymbols::java_lang_NullPointerException()); 1324 } 1325 Handle h_recv(THREAD, recv); 1326 1327 int number_of_parameters; 1328 Method* selected_method; 1329 { 1330 Method* m = Method::resolve_jmethod_id(method_id); 1331 number_of_parameters = m->size_of_parameters(); 1332 Klass* holder = m->method_holder(); 1333 if (!(holder)->is_interface()) { 1334 // non-interface call -- for that little speed boost, don't handlize 1335 debug_only(No_Safepoint_Verifier nosafepoint;) 1336 if (call_type == JNI_VIRTUAL) { 1337 // jni_GetMethodID makes sure class is linked and initialized 1338 // so m should have a valid vtable index. 1339 int vtbl_index = m->vtable_index(); 1340 if (vtbl_index != Method::nonvirtual_vtable_index) { 1341 Klass* k = h_recv->klass(); 1342 // k might be an arrayKlassOop but all vtables start at 1343 // the same place. The cast is to avoid virtual call and assertion. 1344 InstanceKlass *ik = (InstanceKlass*)k; 1345 selected_method = ik->method_at_vtable(vtbl_index); 1346 } else { 1347 // final method 1348 selected_method = m; 1349 } 1350 } else { 1351 // JNI_NONVIRTUAL call 1352 selected_method = m; 1353 } 1354 } else { 1355 // interface call 1356 KlassHandle h_holder(THREAD, holder); 1357 1358 int itbl_index = m->cached_itable_index(); 1359 if (itbl_index == -1) { 1360 itbl_index = klassItable::compute_itable_index(m); 1361 m->set_cached_itable_index(itbl_index); 1362 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again 1363 } 1364 Klass* k = h_recv->klass(); 1365 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); 1366 } 1367 } 1368 1369 methodHandle method(THREAD, selected_method); 1370 1371 // Create object to hold arguments for the JavaCall, and associate it with 1372 // the jni parser 1373 ResourceMark rm(THREAD); 1374 JavaCallArguments java_args(number_of_parameters); 1375 args->set_java_argument_object(&java_args); 1376 1377 // handle arguments 1378 assert(!method->is_static(), "method should not be static"); 1379 args->push_receiver(h_recv); // Push jobject handle 1380 1381 // Fill out JavaCallArguments object 1382 args->iterate( Fingerprinter(method).fingerprint() ); 1383 // Initialize result type 1384 result->set_type(args->get_ret_type()); 1385 1386 // Invoke the method. Result is returned as oop. 1387 JavaCalls::call(result, method, &java_args, CHECK); 1388 1389 // Convert result 1390 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { 1391 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); 1392 } 1393} 1394 1395 1396static instanceOop alloc_object(jclass clazz, TRAPS) { 1397 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1398 k()->check_valid_for_instantiation(false, CHECK_NULL); 1399 InstanceKlass::cast(k())->initialize(CHECK_NULL); 1400 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD); 1401 return ih; 1402} 1403 1404#ifndef USDT2 1405DT_RETURN_MARK_DECL(AllocObject, jobject); 1406#else /* USDT2 */ 1407DT_RETURN_MARK_DECL(AllocObject, jobject 1408 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref)); 1409#endif /* USDT2 */ 1410 1411JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) 1412 JNIWrapper("AllocObject"); 1413 1414#ifndef USDT2 1415 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); 1416#else /* USDT2 */ 1417 HOTSPOT_JNI_ALLOCOBJECT_ENTRY( 1418 env, clazz); 1419#endif /* USDT2 */ 1420 jobject ret = NULL; 1421 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); 1422 1423 instanceOop i = alloc_object(clazz, CHECK_NULL); 1424 ret = JNIHandles::make_local(env, i); 1425 return ret; 1426JNI_END 1427 1428#ifndef USDT2 1429DT_RETURN_MARK_DECL(NewObjectA, jobject); 1430#else /* USDT2 */ 1431DT_RETURN_MARK_DECL(NewObjectA, jobject 1432 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref)); 1433#endif /* USDT2 */ 1434 1435JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) 1436 JNIWrapper("NewObjectA"); 1437#ifndef USDT2 1438 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); 1439#else /* USDT2 */ 1440 HOTSPOT_JNI_NEWOBJECTA_ENTRY( 1441 env, clazz, (uintptr_t) methodID); 1442#endif /* USDT2 */ 1443 jobject obj = NULL; 1444 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); 1445 1446 instanceOop i = alloc_object(clazz, CHECK_NULL); 1447 obj = JNIHandles::make_local(env, i); 1448 JavaValue jvalue(T_VOID); 1449 JNI_ArgumentPusherArray ap(methodID, args); 1450 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1451 return obj; 1452JNI_END 1453 1454#ifndef USDT2 1455DT_RETURN_MARK_DECL(NewObjectV, jobject); 1456#else /* USDT2 */ 1457DT_RETURN_MARK_DECL(NewObjectV, jobject 1458 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref)); 1459#endif /* USDT2 */ 1460 1461JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) 1462 JNIWrapper("NewObjectV"); 1463#ifndef USDT2 1464 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); 1465#else /* USDT2 */ 1466 HOTSPOT_JNI_NEWOBJECTV_ENTRY( 1467 env, clazz, (uintptr_t) methodID); 1468#endif /* USDT2 */ 1469 jobject obj = NULL; 1470 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); 1471 1472 instanceOop i = alloc_object(clazz, CHECK_NULL); 1473 obj = JNIHandles::make_local(env, i); 1474 JavaValue jvalue(T_VOID); 1475 JNI_ArgumentPusherVaArg ap(methodID, args); 1476 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1477 return obj; 1478JNI_END 1479 1480#ifndef USDT2 1481DT_RETURN_MARK_DECL(NewObject, jobject); 1482#else /* USDT2 */ 1483DT_RETURN_MARK_DECL(NewObject, jobject 1484 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref)); 1485#endif /* USDT2 */ 1486 1487JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) 1488 JNIWrapper("NewObject"); 1489#ifndef USDT2 1490 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); 1491#else /* USDT2 */ 1492 HOTSPOT_JNI_NEWOBJECT_ENTRY( 1493 env, clazz, (uintptr_t) methodID); 1494#endif /* USDT2 */ 1495 jobject obj = NULL; 1496 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); 1497 1498 instanceOop i = alloc_object(clazz, CHECK_NULL); 1499 obj = JNIHandles::make_local(env, i); 1500 va_list args; 1501 va_start(args, methodID); 1502 JavaValue jvalue(T_VOID); 1503 JNI_ArgumentPusherVaArg ap(methodID, args); 1504 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); 1505 va_end(args); 1506 return obj; 1507JNI_END 1508 1509 1510JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) 1511 JNIWrapper("GetObjectClass"); 1512#ifndef USDT2 1513 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); 1514#else /* USDT2 */ 1515 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY( 1516 env, obj); 1517#endif /* USDT2 */ 1518 Klass* k = JNIHandles::resolve_non_null(obj)->klass(); 1519 jclass ret = 1520 (jclass) JNIHandles::make_local(env, k->java_mirror()); 1521#ifndef USDT2 1522 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); 1523#else /* USDT2 */ 1524 HOTSPOT_JNI_GETOBJECTCLASS_RETURN( 1525 ret); 1526#endif /* USDT2 */ 1527 return ret; 1528JNI_END 1529 1530JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) 1531 JNIWrapper("IsInstanceOf"); 1532#ifndef USDT2 1533 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); 1534#else /* USDT2 */ 1535 HOTSPOT_JNI_ISINSTANCEOF_ENTRY( 1536 env, obj, clazz); 1537#endif /* USDT2 */ 1538 jboolean ret = JNI_TRUE; 1539 if (obj != NULL) { 1540 ret = JNI_FALSE; 1541 Klass* k = java_lang_Class::as_Klass( 1542 JNIHandles::resolve_non_null(clazz)); 1543 if (k != NULL) { 1544 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; 1545 } 1546 } 1547#ifndef USDT2 1548 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); 1549#else /* USDT2 */ 1550 HOTSPOT_JNI_ISINSTANCEOF_RETURN( 1551 ret); 1552#endif /* USDT2 */ 1553 return ret; 1554JNI_END 1555 1556 1557static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, 1558 const char *sig, bool is_static, TRAPS) { 1559 // %%%% This code should probably just call into a method in the LinkResolver 1560 // 1561 // The class should have been loaded (we have an instance of the class 1562 // passed in) so the method and signature should already be in the symbol 1563 // table. If they're not there, the method doesn't exist. 1564 const char *name_to_probe = (name_str == NULL) 1565 ? vmSymbols::object_initializer_name()->as_C_string() 1566 : name_str; 1567 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe)); 1568 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig)); 1569 1570 if (name == NULL || signature == NULL) { 1571 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1572 } 1573 1574 // Throw a NoSuchMethodError exception if we have an instance of a 1575 // primitive java.lang.Class 1576 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { 1577 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1578 } 1579 1580 KlassHandle klass(THREAD, 1581 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1582 1583 // Make sure class is linked and initialized before handing id's out to 1584 // Method*s. 1585 klass()->initialize(CHECK_NULL); 1586 1587 Method* m; 1588 if (name == vmSymbols::object_initializer_name() || 1589 name == vmSymbols::class_initializer_name()) { 1590 // Never search superclasses for constructors 1591 if (klass->oop_is_instance()) { 1592 m = InstanceKlass::cast(klass())->find_method(name, signature); 1593 } else { 1594 m = NULL; 1595 } 1596 } else { 1597 m = klass->lookup_method(name, signature); 1598 // Look up interfaces 1599 if (m == NULL && klass->oop_is_instance()) { 1600 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name, 1601 signature); 1602 } 1603 } 1604 if (m == NULL || (m->is_static() != is_static)) { 1605 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); 1606 } 1607 return m->jmethod_id(); 1608} 1609 1610 1611JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, 1612 const char *name, const char *sig)) 1613 JNIWrapper("GetMethodID"); 1614#ifndef USDT2 1615 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); 1616#else /* USDT2 */ 1617 HOTSPOT_JNI_GETMETHODID_ENTRY( 1618 env, clazz, (char *) name, (char *) sig); 1619#endif /* USDT2 */ 1620 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); 1621#ifndef USDT2 1622 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); 1623#else /* USDT2 */ 1624 HOTSPOT_JNI_GETMETHODID_RETURN( 1625 (uintptr_t) ret); 1626#endif /* USDT2 */ 1627 return ret; 1628JNI_END 1629 1630 1631JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, 1632 const char *name, const char *sig)) 1633 JNIWrapper("GetStaticMethodID"); 1634#ifndef USDT2 1635 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); 1636#else /* USDT2 */ 1637 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY( 1638 env, (char *) clazz, (char *) name, (char *)sig); 1639#endif /* USDT2 */ 1640 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); 1641#ifndef USDT2 1642 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); 1643#else /* USDT2 */ 1644 HOTSPOT_JNI_GETSTATICMETHODID_RETURN( 1645 (uintptr_t) ret); 1646#endif /* USDT2 */ 1647 return ret; 1648JNI_END 1649 1650 1651 1652// 1653// Calling Methods 1654// 1655 1656#ifndef USDT2 1657#define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ 1658\ 1659 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ 1660 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ 1661 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ 1662\ 1663JNI_ENTRY(ResultType, \ 1664 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1665 JNIWrapper("Call" XSTR(Result) "Method"); \ 1666\ 1667 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \ 1668 ResultType ret = 0;\ 1669 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1670 (const ResultType&)ret);\ 1671\ 1672 va_list args; \ 1673 va_start(args, methodID); \ 1674 JavaValue jvalue(Tag); \ 1675 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1676 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1677 va_end(args); \ 1678 ret = jvalue.get_##ResultType(); \ 1679 return ret;\ 1680JNI_END \ 1681\ 1682\ 1683JNI_ENTRY(ResultType, \ 1684 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1685 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1686\ 1687 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \ 1688 ResultType ret = 0;\ 1689 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1690 (const ResultType&)ret);\ 1691\ 1692 JavaValue jvalue(Tag); \ 1693 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1694 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1695 ret = jvalue.get_##ResultType(); \ 1696 return ret;\ 1697JNI_END \ 1698\ 1699\ 1700JNI_ENTRY(ResultType, \ 1701 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1702 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1703 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \ 1704 ResultType ret = 0;\ 1705 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1706 (const ResultType&)ret);\ 1707\ 1708 JavaValue jvalue(Tag); \ 1709 JNI_ArgumentPusherArray ap(methodID, args); \ 1710 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1711 ret = jvalue.get_##ResultType(); \ 1712 return ret;\ 1713JNI_END 1714 1715// the runtime type of subword integral basic types is integer 1716DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) 1717DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) 1718DEFINE_CALLMETHOD(jchar, Char, T_CHAR) 1719DEFINE_CALLMETHOD(jshort, Short, T_SHORT) 1720 1721DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) 1722DEFINE_CALLMETHOD(jint, Int, T_INT) 1723DEFINE_CALLMETHOD(jlong, Long, T_LONG) 1724DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) 1725DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) 1726 1727DT_VOID_RETURN_MARK_DECL(CallVoidMethod); 1728DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); 1729DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); 1730 1731#else /* USDT2 */ 1732 1733#define DEFINE_CALLMETHOD(ResultType, Result, Tag \ 1734 , EntryProbe, ReturnProbe) \ 1735\ 1736 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \ 1737 , ReturnProbe); \ 1738\ 1739JNI_ENTRY(ResultType, \ 1740 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ 1741 JNIWrapper("Call" XSTR(Result) "Method"); \ 1742\ 1743 EntryProbe; \ 1744 ResultType ret = 0;\ 1745 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ 1746 (const ResultType&)ret);\ 1747\ 1748 va_list args; \ 1749 va_start(args, methodID); \ 1750 JavaValue jvalue(Tag); \ 1751 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1752 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1753 va_end(args); \ 1754 ret = jvalue.get_##ResultType(); \ 1755 return ret;\ 1756JNI_END 1757 1758// the runtime type of subword integral basic types is integer 1759DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN 1760 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1761 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1762DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE 1763 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1764 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1765DEFINE_CALLMETHOD(jchar, Char, T_CHAR 1766 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1767 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1768DEFINE_CALLMETHOD(jshort, Short, T_SHORT 1769 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1770 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1771 1772DEFINE_CALLMETHOD(jobject, Object, T_OBJECT 1773 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1774 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1775DEFINE_CALLMETHOD(jint, Int, T_INT, 1776 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1777 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1778DEFINE_CALLMETHOD(jlong, Long, T_LONG 1779 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1780 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1781// Float and double probes don't return value because dtrace doesn't currently support it 1782DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT 1783 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1784 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1785DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE 1786 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1787 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1788 1789#define DEFINE_CALLMETHODV(ResultType, Result, Tag \ 1790 , EntryProbe, ReturnProbe) \ 1791\ 1792 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \ 1793 , ReturnProbe); \ 1794\ 1795JNI_ENTRY(ResultType, \ 1796 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ 1797 JNIWrapper("Call" XSTR(Result) "MethodV"); \ 1798\ 1799 EntryProbe;\ 1800 ResultType ret = 0;\ 1801 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ 1802 (const ResultType&)ret);\ 1803\ 1804 JavaValue jvalue(Tag); \ 1805 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1806 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1807 ret = jvalue.get_##ResultType(); \ 1808 return ret;\ 1809JNI_END 1810 1811// the runtime type of subword integral basic types is integer 1812DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN 1813 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1814 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1815DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE 1816 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1817 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1818DEFINE_CALLMETHODV(jchar, Char, T_CHAR 1819 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1820 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1821DEFINE_CALLMETHODV(jshort, Short, T_SHORT 1822 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1823 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1824 1825DEFINE_CALLMETHODV(jobject, Object, T_OBJECT 1826 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1827 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1828DEFINE_CALLMETHODV(jint, Int, T_INT, 1829 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1830 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1831DEFINE_CALLMETHODV(jlong, Long, T_LONG 1832 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1833 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1834// Float and double probes don't return value because dtrace doesn't currently support it 1835DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT 1836 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1837 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1838DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE 1839 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1840 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1841 1842#define DEFINE_CALLMETHODA(ResultType, Result, Tag \ 1843 , EntryProbe, ReturnProbe) \ 1844\ 1845 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \ 1846 , ReturnProbe); \ 1847\ 1848JNI_ENTRY(ResultType, \ 1849 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ 1850 JNIWrapper("Call" XSTR(Result) "MethodA"); \ 1851 EntryProbe; \ 1852 ResultType ret = 0;\ 1853 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ 1854 (const ResultType&)ret);\ 1855\ 1856 JavaValue jvalue(Tag); \ 1857 JNI_ArgumentPusherArray ap(methodID, args); \ 1858 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ 1859 ret = jvalue.get_##ResultType(); \ 1860 return ret;\ 1861JNI_END 1862 1863// the runtime type of subword integral basic types is integer 1864DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN 1865 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1866 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref)) 1867DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE 1868 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1869 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref)) 1870DEFINE_CALLMETHODA(jchar, Char, T_CHAR 1871 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1872 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref)) 1873DEFINE_CALLMETHODA(jshort, Short, T_SHORT 1874 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1875 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref)) 1876 1877DEFINE_CALLMETHODA(jobject, Object, T_OBJECT 1878 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1879 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref)) 1880DEFINE_CALLMETHODA(jint, Int, T_INT, 1881 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1882 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref)) 1883DEFINE_CALLMETHODA(jlong, Long, T_LONG 1884 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1885 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref)) 1886// Float and double probes don't return value because dtrace doesn't currently support it 1887DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT 1888 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1889 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN()) 1890DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE 1891 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID), 1892 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN()) 1893 1894DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN()); 1895DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN()); 1896DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN()); 1897 1898#endif /* USDT2 */ 1899 1900JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) 1901 JNIWrapper("CallVoidMethod"); 1902#ifndef USDT2 1903 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); 1904#else /* USDT2 */ 1905 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY( 1906 env, obj, (uintptr_t) methodID); 1907#endif /* USDT2 */ 1908 DT_VOID_RETURN_MARK(CallVoidMethod); 1909 1910 va_list args; 1911 va_start(args, methodID); 1912 JavaValue jvalue(T_VOID); 1913 JNI_ArgumentPusherVaArg ap(methodID, args); 1914 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1915 va_end(args); 1916JNI_END 1917 1918 1919JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) 1920 JNIWrapper("CallVoidMethodV"); 1921#ifndef USDT2 1922 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); 1923#else /* USDT2 */ 1924 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY( 1925 env, obj, (uintptr_t) methodID); 1926#endif /* USDT2 */ 1927 DT_VOID_RETURN_MARK(CallVoidMethodV); 1928 1929 JavaValue jvalue(T_VOID); 1930 JNI_ArgumentPusherVaArg ap(methodID, args); 1931 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1932JNI_END 1933 1934 1935JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) 1936 JNIWrapper("CallVoidMethodA"); 1937#ifndef USDT2 1938 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); 1939#else /* USDT2 */ 1940 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY( 1941 env, obj, (uintptr_t) methodID); 1942#endif /* USDT2 */ 1943 DT_VOID_RETURN_MARK(CallVoidMethodA); 1944 1945 JavaValue jvalue(T_VOID); 1946 JNI_ArgumentPusherArray ap(methodID, args); 1947 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); 1948JNI_END 1949 1950 1951#ifndef USDT2 1952#define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ 1953\ 1954 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ 1955 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ 1956 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ 1957\ 1958JNI_ENTRY(ResultType, \ 1959 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 1960 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 1961\ 1962 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ 1963 ResultType ret;\ 1964 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 1965 (const ResultType&)ret);\ 1966\ 1967 va_list args; \ 1968 va_start(args, methodID); \ 1969 JavaValue jvalue(Tag); \ 1970 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1971 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1972 va_end(args); \ 1973 ret = jvalue.get_##ResultType(); \ 1974 return ret;\ 1975JNI_END \ 1976\ 1977JNI_ENTRY(ResultType, \ 1978 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 1979 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ 1980 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ 1981 ResultType ret;\ 1982 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 1983 (const ResultType&)ret);\ 1984\ 1985 JavaValue jvalue(Tag); \ 1986 JNI_ArgumentPusherVaArg ap(methodID, args); \ 1987 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 1988 ret = jvalue.get_##ResultType(); \ 1989 return ret;\ 1990JNI_END \ 1991\ 1992JNI_ENTRY(ResultType, \ 1993 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 1994 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 1995 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ 1996 ResultType ret;\ 1997 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 1998 (const ResultType&)ret);\ 1999\ 2000 JavaValue jvalue(Tag); \ 2001 JNI_ArgumentPusherArray ap(methodID, args); \ 2002 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2003 ret = jvalue.get_##ResultType(); \ 2004 return ret;\ 2005JNI_END 2006 2007// the runtime type of subword integral basic types is integer 2008DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) 2009DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) 2010DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) 2011DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) 2012 2013DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) 2014DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) 2015DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) 2016DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) 2017DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) 2018 2019 2020DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); 2021DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); 2022DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); 2023 2024#else /* USDT2 */ 2025 2026#define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \ 2027 , EntryProbe, ReturnProbe) \ 2028\ 2029 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \ 2030 , ReturnProbe);\ 2031\ 2032JNI_ENTRY(ResultType, \ 2033 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ 2034 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ 2035\ 2036 EntryProbe;\ 2037 ResultType ret;\ 2038 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ 2039 (const ResultType&)ret);\ 2040\ 2041 va_list args; \ 2042 va_start(args, methodID); \ 2043 JavaValue jvalue(Tag); \ 2044 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2045 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2046 va_end(args); \ 2047 ret = jvalue.get_##ResultType(); \ 2048 return ret;\ 2049JNI_END 2050 2051// the runtime type of subword integral basic types is integer 2052DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN 2053 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2054 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref)) 2055DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE 2056 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2057 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref)) 2058DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR 2059 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2060 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref)) 2061DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT 2062 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2063 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref)) 2064 2065DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT 2066 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2067 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref)) 2068DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT 2069 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2070 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref)) 2071DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG 2072 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2073// Float and double probes don't return value because dtrace doesn't currently support it 2074 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref)) 2075DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT 2076 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2077 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN()) 2078DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE 2079 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID), 2080 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN()) 2081 2082#define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \ 2083 , EntryProbe, ReturnProbe) \ 2084\ 2085 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \ 2086 , ReturnProbe);\ 2087\ 2088JNI_ENTRY(ResultType, \ 2089 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ 2090 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \ 2091\ 2092 EntryProbe;\ 2093 ResultType ret;\ 2094 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ 2095 (const ResultType&)ret);\ 2096\ 2097 JavaValue jvalue(Tag); \ 2098 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2099 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2100 ret = jvalue.get_##ResultType(); \ 2101 return ret;\ 2102JNI_END 2103 2104// the runtime type of subword integral basic types is integer 2105DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN 2106 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2107 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref)) 2108DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE 2109 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2110 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref)) 2111DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR 2112 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2113 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref)) 2114DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT 2115 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2116 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref)) 2117 2118DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT 2119 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2120 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref)) 2121DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT 2122 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2123 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref)) 2124DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG 2125 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2126// Float and double probes don't return value because dtrace doesn't currently support it 2127 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref)) 2128DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT 2129 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2130 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN()) 2131DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE 2132 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID), 2133 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN()) 2134 2135#define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \ 2136 , EntryProbe, ReturnProbe) \ 2137\ 2138 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \ 2139 , ReturnProbe);\ 2140\ 2141JNI_ENTRY(ResultType, \ 2142 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ 2143 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ 2144\ 2145 EntryProbe;\ 2146 ResultType ret;\ 2147 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ 2148 (const ResultType&)ret);\ 2149\ 2150 JavaValue jvalue(Tag); \ 2151 JNI_ArgumentPusherArray ap(methodID, args); \ 2152 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ 2153 ret = jvalue.get_##ResultType(); \ 2154 return ret;\ 2155JNI_END 2156 2157// the runtime type of subword integral basic types is integer 2158DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN 2159 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2160 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref)) 2161DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE 2162 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2163 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref)) 2164DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR 2165 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2166 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref)) 2167DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT 2168 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2169 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref)) 2170 2171DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT 2172 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2173 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref)) 2174DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT 2175 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2176 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref)) 2177DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG 2178 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2179// Float and double probes don't return value because dtrace doesn't currently support it 2180 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref)) 2181DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT 2182 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2183 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN()) 2184DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE 2185 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID), 2186 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN()) 2187 2188DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod 2189 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN()); 2190DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV 2191 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN()); 2192DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA 2193 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN()); 2194#endif /* USDT2 */ 2195 2196JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) 2197 JNIWrapper("CallNonvirtualVoidMethod"); 2198 2199#ifndef USDT2 2200 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, 2201 env, obj, cls, methodID); 2202#else /* USDT2 */ 2203 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY( 2204 env, obj, cls, (uintptr_t) methodID); 2205#endif /* USDT2 */ 2206 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); 2207 2208 va_list args; 2209 va_start(args, methodID); 2210 JavaValue jvalue(T_VOID); 2211 JNI_ArgumentPusherVaArg ap(methodID, args); 2212 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2213 va_end(args); 2214JNI_END 2215 2216 2217JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) 2218 JNIWrapper("CallNonvirtualVoidMethodV"); 2219 2220#ifndef USDT2 2221 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, 2222 env, obj, cls, methodID); 2223#else /* USDT2 */ 2224 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY( 2225 env, obj, cls, (uintptr_t) methodID); 2226#endif /* USDT2 */ 2227 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); 2228 2229 JavaValue jvalue(T_VOID); 2230 JNI_ArgumentPusherVaArg ap(methodID, args); 2231 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2232JNI_END 2233 2234 2235JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) 2236 JNIWrapper("CallNonvirtualVoidMethodA"); 2237#ifndef USDT2 2238 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, 2239 env, obj, cls, methodID); 2240#else /* USDT2 */ 2241 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY( 2242 env, obj, cls, (uintptr_t) methodID); 2243#endif /* USDT2 */ 2244 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); 2245 JavaValue jvalue(T_VOID); 2246 JNI_ArgumentPusherArray ap(methodID, args); 2247 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); 2248JNI_END 2249 2250 2251#ifndef USDT2 2252#define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ 2253\ 2254 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ 2255 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ 2256 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ 2257\ 2258JNI_ENTRY(ResultType, \ 2259 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2260 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2261\ 2262 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ 2263 ResultType ret = 0;\ 2264 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2265 (const ResultType&)ret);\ 2266\ 2267 va_list args; \ 2268 va_start(args, methodID); \ 2269 JavaValue jvalue(Tag); \ 2270 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2271 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2272 va_end(args); \ 2273 ret = jvalue.get_##ResultType(); \ 2274 return ret;\ 2275JNI_END \ 2276\ 2277JNI_ENTRY(ResultType, \ 2278 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2279 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2280 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ 2281 ResultType ret = 0;\ 2282 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2283 (const ResultType&)ret);\ 2284\ 2285 JavaValue jvalue(Tag); \ 2286 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2287 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2288 ret = jvalue.get_##ResultType(); \ 2289 return ret;\ 2290JNI_END \ 2291\ 2292JNI_ENTRY(ResultType, \ 2293 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2294 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2295 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ 2296 ResultType ret = 0;\ 2297 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2298 (const ResultType&)ret);\ 2299\ 2300 JavaValue jvalue(Tag); \ 2301 JNI_ArgumentPusherArray ap(methodID, args); \ 2302 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2303 ret = jvalue.get_##ResultType(); \ 2304 return ret;\ 2305JNI_END 2306 2307// the runtime type of subword integral basic types is integer 2308DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) 2309DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) 2310DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) 2311DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) 2312 2313DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) 2314DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) 2315DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) 2316DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) 2317DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) 2318 2319 2320DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); 2321DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); 2322DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); 2323 2324#else /* USDT2 */ 2325 2326#define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \ 2327 , EntryProbe, ResultProbe) \ 2328\ 2329 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \ 2330 , ResultProbe); \ 2331\ 2332JNI_ENTRY(ResultType, \ 2333 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ 2334 JNIWrapper("CallStatic" XSTR(Result) "Method"); \ 2335\ 2336 EntryProbe; \ 2337 ResultType ret = 0;\ 2338 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ 2339 (const ResultType&)ret);\ 2340\ 2341 va_list args; \ 2342 va_start(args, methodID); \ 2343 JavaValue jvalue(Tag); \ 2344 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2345 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2346 va_end(args); \ 2347 ret = jvalue.get_##ResultType(); \ 2348 return ret;\ 2349JNI_END 2350 2351// the runtime type of subword integral basic types is integer 2352DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN 2353 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2354 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref)); 2355DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE 2356 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2357 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref)); 2358DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR 2359 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2360 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref)); 2361DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT 2362 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2363 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref)); 2364 2365DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT 2366 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2367 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref)); 2368DEFINE_CALLSTATICMETHOD(jint, Int, T_INT 2369 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2370 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref)); 2371DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG 2372 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2373 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref)); 2374// Float and double probes don't return value because dtrace doesn't currently support it 2375DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT 2376 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2377 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN()); 2378DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE 2379 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID), 2380 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN()); 2381 2382#define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \ 2383 , EntryProbe, ResultProbe) \ 2384\ 2385 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \ 2386 , ResultProbe); \ 2387\ 2388JNI_ENTRY(ResultType, \ 2389 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ 2390 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ 2391\ 2392 EntryProbe; \ 2393 ResultType ret = 0;\ 2394 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ 2395 (const ResultType&)ret);\ 2396\ 2397 JavaValue jvalue(Tag); \ 2398 JNI_ArgumentPusherVaArg ap(methodID, args); \ 2399 /* Make sure class is initialized before trying to invoke its method */ \ 2400 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \ 2401 k()->initialize(CHECK_0); \ 2402 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2403 va_end(args); \ 2404 ret = jvalue.get_##ResultType(); \ 2405 return ret;\ 2406JNI_END 2407 2408// the runtime type of subword integral basic types is integer 2409DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN 2410 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2411 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref)); 2412DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE 2413 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2414 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref)); 2415DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR 2416 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2417 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref)); 2418DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT 2419 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2420 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref)); 2421 2422DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT 2423 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2424 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref)); 2425DEFINE_CALLSTATICMETHODV(jint, Int, T_INT 2426 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2427 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref)); 2428DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG 2429 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2430 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref)); 2431// Float and double probes don't return value because dtrace doesn't currently support it 2432DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT 2433 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2434 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN()); 2435DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE 2436 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID), 2437 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN()); 2438 2439#define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \ 2440 , EntryProbe, ResultProbe) \ 2441\ 2442 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \ 2443 , ResultProbe); \ 2444\ 2445JNI_ENTRY(ResultType, \ 2446 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ 2447 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ 2448\ 2449 EntryProbe; \ 2450 ResultType ret = 0;\ 2451 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ 2452 (const ResultType&)ret);\ 2453\ 2454 JavaValue jvalue(Tag); \ 2455 JNI_ArgumentPusherArray ap(methodID, args); \ 2456 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ 2457 ret = jvalue.get_##ResultType(); \ 2458 return ret;\ 2459JNI_END 2460 2461// the runtime type of subword integral basic types is integer 2462DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN 2463 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2464 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref)); 2465DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE 2466 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2467 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref)); 2468DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR 2469 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2470 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref)); 2471DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT 2472 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2473 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref)); 2474 2475DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT 2476 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2477 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref)); 2478DEFINE_CALLSTATICMETHODA(jint, Int, T_INT 2479 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2480 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref)); 2481DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG 2482 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2483 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref)); 2484// Float and double probes don't return value because dtrace doesn't currently support it 2485DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT 2486 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2487 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN()); 2488DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE 2489 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID), 2490 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN()); 2491 2492DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod 2493 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN()); 2494DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV 2495 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN()); 2496DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA 2497 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN()); 2498#endif /* USDT2 */ 2499 2500JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) 2501 JNIWrapper("CallStaticVoidMethod"); 2502#ifndef USDT2 2503 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); 2504#else /* USDT2 */ 2505 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY( 2506 env, cls, (uintptr_t) methodID); 2507#endif /* USDT2 */ 2508 DT_VOID_RETURN_MARK(CallStaticVoidMethod); 2509 2510 va_list args; 2511 va_start(args, methodID); 2512 JavaValue jvalue(T_VOID); 2513 JNI_ArgumentPusherVaArg ap(methodID, args); 2514 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2515 va_end(args); 2516JNI_END 2517 2518 2519JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) 2520 JNIWrapper("CallStaticVoidMethodV"); 2521#ifndef USDT2 2522 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); 2523#else /* USDT2 */ 2524 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY( 2525 env, cls, (uintptr_t) methodID); 2526#endif /* USDT2 */ 2527 DT_VOID_RETURN_MARK(CallStaticVoidMethodV); 2528 2529 JavaValue jvalue(T_VOID); 2530 JNI_ArgumentPusherVaArg ap(methodID, args); 2531 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2532JNI_END 2533 2534 2535JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) 2536 JNIWrapper("CallStaticVoidMethodA"); 2537#ifndef USDT2 2538 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); 2539#else /* USDT2 */ 2540 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY( 2541 env, cls, (uintptr_t) methodID); 2542#endif /* USDT2 */ 2543 DT_VOID_RETURN_MARK(CallStaticVoidMethodA); 2544 2545 JavaValue jvalue(T_VOID); 2546 JNI_ArgumentPusherArray ap(methodID, args); 2547 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); 2548JNI_END 2549 2550 2551// 2552// Accessing Fields 2553// 2554 2555 2556#ifndef USDT2 2557DT_RETURN_MARK_DECL(GetFieldID, jfieldID); 2558#else /* USDT2 */ 2559DT_RETURN_MARK_DECL(GetFieldID, jfieldID 2560 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref)); 2561#endif /* USDT2 */ 2562 2563JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, 2564 const char *name, const char *sig)) 2565 JNIWrapper("GetFieldID"); 2566#ifndef USDT2 2567 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); 2568#else /* USDT2 */ 2569 HOTSPOT_JNI_GETFIELDID_ENTRY( 2570 env, clazz, (char *) name, (char *) sig); 2571#endif /* USDT2 */ 2572 jfieldID ret = 0; 2573 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); 2574 2575 // The class should have been loaded (we have an instance of the class 2576 // passed in) so the field and signature should already be in the symbol 2577 // table. If they're not there, the field doesn't exist. 2578 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2579 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2580 if (fieldname == NULL || signame == NULL) { 2581 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2582 } 2583 KlassHandle k(THREAD, 2584 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2585 // Make sure class is initialized before handing id's out to fields 2586 k()->initialize(CHECK_NULL); 2587 2588 fieldDescriptor fd; 2589 if (!k()->oop_is_instance() || 2590 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) { 2591 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2592 } 2593 2594 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop 2595 // It may also have hash bits for k, if VerifyJNIFields is turned on. 2596 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); 2597 return ret; 2598JNI_END 2599 2600 2601JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) 2602 JNIWrapper("GetObjectField"); 2603#ifndef USDT2 2604 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); 2605#else /* USDT2 */ 2606 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY( 2607 env, obj, (uintptr_t) fieldID); 2608#endif /* USDT2 */ 2609 oop o = JNIHandles::resolve_non_null(obj); 2610 Klass* k = o->klass(); 2611 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2612 // Keep JVMTI addition small and only check enabled flag here. 2613 // jni_GetField_probe() assumes that is okay to create handles. 2614 if (JvmtiExport::should_post_field_access()) { 2615 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); 2616 } 2617 jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); 2618#if INCLUDE_ALL_GCS 2619 // If G1 is enabled and we are accessing the value of the referent 2620 // field in a reference object then we need to register a non-null 2621 // referent with the SATB barrier. 2622 if (UseG1GC) { 2623 bool needs_barrier = false; 2624 2625 if (ret != NULL && 2626 offset == java_lang_ref_Reference::referent_offset && 2627 InstanceKlass::cast(k)->reference_type() != REF_NONE) { 2628 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); 2629 needs_barrier = true; 2630 } 2631 2632 if (needs_barrier) { 2633 oop referent = JNIHandles::resolve(ret); 2634 G1SATBCardTableModRefBS::enqueue(referent); 2635 } 2636 } 2637#endif // INCLUDE_ALL_GCS 2638#ifndef USDT2 2639 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); 2640#else /* USDT2 */ 2641HOTSPOT_JNI_GETOBJECTFIELD_RETURN( 2642 ret); 2643#endif /* USDT2 */ 2644 return ret; 2645JNI_END 2646 2647 2648#ifndef USDT2 2649#define DEFINE_GETFIELD(Return,Fieldname,Result) \ 2650\ 2651 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ 2652\ 2653JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2654 JNIWrapper("Get" XSTR(Result) "Field"); \ 2655\ 2656 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ 2657 Return ret = 0;\ 2658 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2659\ 2660 oop o = JNIHandles::resolve_non_null(obj); \ 2661 Klass* k = o->klass(); \ 2662 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2663 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2664 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2665 /* and creates a ResetNoHandleMark. */ \ 2666 if (JvmtiExport::should_post_field_access()) { \ 2667 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2668 } \ 2669 ret = o->Fieldname##_field(offset); \ 2670 return ret; \ 2671JNI_END 2672 2673DEFINE_GETFIELD(jboolean, bool, Boolean) 2674DEFINE_GETFIELD(jbyte, byte, Byte) 2675DEFINE_GETFIELD(jchar, char, Char) 2676DEFINE_GETFIELD(jshort, short, Short) 2677DEFINE_GETFIELD(jint, int, Int) 2678DEFINE_GETFIELD(jlong, long, Long) 2679DEFINE_GETFIELD(jfloat, float, Float) 2680DEFINE_GETFIELD(jdouble, double, Double) 2681 2682#else /* USDT2 */ 2683 2684#define DEFINE_GETFIELD(Return,Fieldname,Result \ 2685 , EntryProbe, ReturnProbe) \ 2686\ 2687 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \ 2688 , ReturnProbe); \ 2689\ 2690JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ 2691 JNIWrapper("Get" XSTR(Result) "Field"); \ 2692\ 2693 EntryProbe; \ 2694 Return ret = 0;\ 2695 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ 2696\ 2697 oop o = JNIHandles::resolve_non_null(obj); \ 2698 Klass* k = o->klass(); \ 2699 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2700 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2701 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ 2702 /* and creates a ResetNoHandleMark. */ \ 2703 if (JvmtiExport::should_post_field_access()) { \ 2704 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ 2705 } \ 2706 ret = o->Fieldname##_field(offset); \ 2707 return ret; \ 2708JNI_END 2709 2710DEFINE_GETFIELD(jboolean, bool, Boolean 2711 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2712 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref)) 2713DEFINE_GETFIELD(jbyte, byte, Byte 2714 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2715 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref)) 2716DEFINE_GETFIELD(jchar, char, Char 2717 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2718 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref)) 2719DEFINE_GETFIELD(jshort, short, Short 2720 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2721 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref)) 2722DEFINE_GETFIELD(jint, int, Int 2723 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2724 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref)) 2725DEFINE_GETFIELD(jlong, long, Long 2726 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2727 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref)) 2728// Float and double probes don't return value because dtrace doesn't currently support it 2729DEFINE_GETFIELD(jfloat, float, Float 2730 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2731 HOTSPOT_JNI_GETFLOATFIELD_RETURN()) 2732DEFINE_GETFIELD(jdouble, double, Double 2733 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2734 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN()) 2735#endif /* USDT2 */ 2736 2737address jni_GetBooleanField_addr() { 2738 return (address)jni_GetBooleanField; 2739} 2740address jni_GetByteField_addr() { 2741 return (address)jni_GetByteField; 2742} 2743address jni_GetCharField_addr() { 2744 return (address)jni_GetCharField; 2745} 2746address jni_GetShortField_addr() { 2747 return (address)jni_GetShortField; 2748} 2749address jni_GetIntField_addr() { 2750 return (address)jni_GetIntField; 2751} 2752address jni_GetLongField_addr() { 2753 return (address)jni_GetLongField; 2754} 2755address jni_GetFloatField_addr() { 2756 return (address)jni_GetFloatField; 2757} 2758address jni_GetDoubleField_addr() { 2759 return (address)jni_GetDoubleField; 2760} 2761 2762JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) 2763 JNIWrapper("SetObjectField"); 2764#ifndef USDT2 2765 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); 2766#else /* USDT2 */ 2767 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY( 2768 env, obj, (uintptr_t) fieldID, value); 2769#endif /* USDT2 */ 2770 oop o = JNIHandles::resolve_non_null(obj); 2771 Klass* k = o->klass(); 2772 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2773 // Keep JVMTI addition small and only check enabled flag here. 2774 // jni_SetField_probe_nh() assumes that is not okay to create handles 2775 // and creates a ResetNoHandleMark. 2776 if (JvmtiExport::should_post_field_modification()) { 2777 jvalue field_value; 2778 field_value.l = value; 2779 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); 2780 } 2781 o->obj_field_put(offset, JNIHandles::resolve(value)); 2782#ifndef USDT2 2783 DTRACE_PROBE(hotspot_jni, SetObjectField__return); 2784#else /* USDT2 */ 2785 HOTSPOT_JNI_SETOBJECTFIELD_RETURN( 2786); 2787#endif /* USDT2 */ 2788JNI_END 2789 2790#ifndef USDT2 2791#define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ 2792\ 2793JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2794 JNIWrapper("Set" XSTR(Result) "Field"); \ 2795\ 2796 FP_SELECT_##Result( \ 2797 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \ 2798 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \ 2799\ 2800 oop o = JNIHandles::resolve_non_null(obj); \ 2801 Klass* k = o->klass(); \ 2802 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2803 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2804 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2805 /* and creates a ResetNoHandleMark. */ \ 2806 if (JvmtiExport::should_post_field_modification()) { \ 2807 jvalue field_value; \ 2808 field_value.unionType = value; \ 2809 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2810 } \ 2811 o->Fieldname##_field_put(offset, value); \ 2812 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ 2813JNI_END 2814 2815DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) 2816DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) 2817DEFINE_SETFIELD(jchar, char, Char, 'C', c) 2818DEFINE_SETFIELD(jshort, short, Short, 'S', s) 2819DEFINE_SETFIELD(jint, int, Int, 'I', i) 2820DEFINE_SETFIELD(jlong, long, Long, 'J', j) 2821DEFINE_SETFIELD(jfloat, float, Float, 'F', f) 2822DEFINE_SETFIELD(jdouble, double, Double, 'D', d) 2823 2824#else /* USDT2 */ 2825 2826#define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \ 2827 , EntryProbe, ReturnProbe) \ 2828\ 2829JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ 2830 JNIWrapper("Set" XSTR(Result) "Field"); \ 2831\ 2832 EntryProbe; \ 2833\ 2834 oop o = JNIHandles::resolve_non_null(obj); \ 2835 Klass* k = o->klass(); \ 2836 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ 2837 /* Keep JVMTI addition small and only check enabled flag here. */ \ 2838 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ 2839 /* and creates a ResetNoHandleMark. */ \ 2840 if (JvmtiExport::should_post_field_modification()) { \ 2841 jvalue field_value; \ 2842 field_value.unionType = value; \ 2843 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ 2844 } \ 2845 o->Fieldname##_field_put(offset, value); \ 2846 ReturnProbe; \ 2847JNI_END 2848 2849DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z 2850 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2851 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 2852DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b 2853 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2854 HOTSPOT_JNI_SETBYTEFIELD_RETURN()) 2855DEFINE_SETFIELD(jchar, char, Char, 'C', c 2856 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2857 HOTSPOT_JNI_SETCHARFIELD_RETURN()) 2858DEFINE_SETFIELD(jshort, short, Short, 'S', s 2859 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2860 HOTSPOT_JNI_SETSHORTFIELD_RETURN()) 2861DEFINE_SETFIELD(jint, int, Int, 'I', i 2862 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2863 HOTSPOT_JNI_SETINTFIELD_RETURN()) 2864DEFINE_SETFIELD(jlong, long, Long, 'J', j 2865 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value), 2866 HOTSPOT_JNI_SETLONGFIELD_RETURN()) 2867// Float and double probes don't return value because dtrace doesn't currently support it 2868DEFINE_SETFIELD(jfloat, float, Float, 'F', f 2869 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2870 HOTSPOT_JNI_SETFLOATFIELD_RETURN()) 2871DEFINE_SETFIELD(jdouble, double, Double, 'D', d 2872 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID), 2873 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN()) 2874#endif /* USDT2 */ 2875 2876#ifndef USDT2 2877DT_RETURN_MARK_DECL(ToReflectedField, jobject); 2878#else /* USDT2 */ 2879DT_RETURN_MARK_DECL(ToReflectedField, jobject 2880 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref)); 2881#endif /* USDT2 */ 2882 2883JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) 2884 JNIWrapper("ToReflectedField"); 2885#ifndef USDT2 2886 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, 2887 env, cls, fieldID, isStatic); 2888#else /* USDT2 */ 2889 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY( 2890 env, cls, (uintptr_t) fieldID, isStatic); 2891#endif /* USDT2 */ 2892 jobject ret = NULL; 2893 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); 2894 2895 fieldDescriptor fd; 2896 bool found = false; 2897 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); 2898 2899 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); 2900 2901 if (isStatic) { 2902 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*. 2903 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2904 assert(id->is_static_field_id(), "invalid static field id"); 2905 found = id->find_local_field(&fd); 2906 } else { 2907 // Non-static field. The fieldID is really the offset of the field within the instanceOop. 2908 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); 2909 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); 2910 } 2911 assert(found, "bad fieldID passed into jni_ToReflectedField"); 2912 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); 2913 ret = JNIHandles::make_local(env, reflected); 2914 return ret; 2915JNI_END 2916 2917 2918// 2919// Accessing Static Fields 2920// 2921#ifndef USDT2 2922DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); 2923#else /* USDT2 */ 2924DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID 2925 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref)); 2926#endif /* USDT2 */ 2927 2928JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, 2929 const char *name, const char *sig)) 2930 JNIWrapper("GetStaticFieldID"); 2931#ifndef USDT2 2932 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); 2933#else /* USDT2 */ 2934 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY( 2935 env, clazz, (char *) name, (char *) sig); 2936#endif /* USDT2 */ 2937 jfieldID ret = NULL; 2938 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); 2939 2940 // The class should have been loaded (we have an instance of the class 2941 // passed in) so the field and signature should already be in the symbol 2942 // table. If they're not there, the field doesn't exist. 2943 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name)); 2944 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig)); 2945 if (fieldname == NULL || signame == NULL) { 2946 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2947 } 2948 KlassHandle k(THREAD, 2949 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2950 // Make sure class is initialized before handing id's out to static fields 2951 k()->initialize(CHECK_NULL); 2952 2953 fieldDescriptor fd; 2954 if (!k()->oop_is_instance() || 2955 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) { 2956 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); 2957 } 2958 2959 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass* 2960 JNIid* id = fd.field_holder()->jni_id_for(fd.offset()); 2961 debug_only(id->set_is_static_field_id();) 2962 2963 debug_only(id->verify(fd.field_holder())); 2964 2965 ret = jfieldIDWorkaround::to_static_jfieldID(id); 2966 return ret; 2967JNI_END 2968 2969 2970JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) 2971 JNIWrapper("GetStaticObjectField"); 2972#ifndef USDT2 2973 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); 2974#else /* USDT2 */ 2975 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY( 2976 env, clazz, (uintptr_t) fieldID); 2977#endif /* USDT2 */ 2978#if INCLUDE_JNI_CHECK 2979 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);) 2980#endif // INCLUDE_JNI_CHECK 2981 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 2982 assert(id->is_static_field_id(), "invalid static field id"); 2983 // Keep JVMTI addition small and only check enabled flag here. 2984 // jni_GetField_probe() assumes that is okay to create handles. 2985 if (JvmtiExport::should_post_field_access()) { 2986 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); 2987 } 2988 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset())); 2989#ifndef USDT2 2990 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); 2991#else /* USDT2 */ 2992 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN( 2993 ret); 2994#endif /* USDT2 */ 2995 return ret; 2996JNI_END 2997 2998#ifndef USDT2 2999#define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ 3000\ 3001 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ 3002\ 3003JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3004 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3005 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ 3006 Return ret = 0;\ 3007 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3008 (const Return&)ret);\ 3009 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3010 assert(id->is_static_field_id(), "invalid static field id"); \ 3011 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3012 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3013 if (JvmtiExport::should_post_field_access()) { \ 3014 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3015 } \ 3016 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3017 return ret;\ 3018JNI_END 3019 3020DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) 3021DEFINE_GETSTATICFIELD(jbyte, byte, Byte) 3022DEFINE_GETSTATICFIELD(jchar, char, Char) 3023DEFINE_GETSTATICFIELD(jshort, short, Short) 3024DEFINE_GETSTATICFIELD(jint, int, Int) 3025DEFINE_GETSTATICFIELD(jlong, long, Long) 3026DEFINE_GETSTATICFIELD(jfloat, float, Float) 3027DEFINE_GETSTATICFIELD(jdouble, double, Double) 3028 3029#else /* USDT2 */ 3030 3031#define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \ 3032 , EntryProbe, ReturnProbe) \ 3033\ 3034 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \ 3035 , ReturnProbe); \ 3036\ 3037JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ 3038 JNIWrapper("GetStatic" XSTR(Result) "Field"); \ 3039 EntryProbe; \ 3040 Return ret = 0;\ 3041 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ 3042 (const Return&)ret);\ 3043 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3044 assert(id->is_static_field_id(), "invalid static field id"); \ 3045 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3046 /* jni_GetField_probe() assumes that is okay to create handles. */ \ 3047 if (JvmtiExport::should_post_field_access()) { \ 3048 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ 3049 } \ 3050 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \ 3051 return ret;\ 3052JNI_END 3053 3054DEFINE_GETSTATICFIELD(jboolean, bool, Boolean 3055 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref)) 3056DEFINE_GETSTATICFIELD(jbyte, byte, Byte 3057 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) ) 3058DEFINE_GETSTATICFIELD(jchar, char, Char 3059 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) ) 3060DEFINE_GETSTATICFIELD(jshort, short, Short 3061 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) ) 3062DEFINE_GETSTATICFIELD(jint, int, Int 3063 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) ) 3064DEFINE_GETSTATICFIELD(jlong, long, Long 3065 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) ) 3066// Float and double probes don't return value because dtrace doesn't currently support it 3067DEFINE_GETSTATICFIELD(jfloat, float, Float 3068 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() ) 3069DEFINE_GETSTATICFIELD(jdouble, double, Double 3070 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() ) 3071#endif /* USDT2 */ 3072 3073JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) 3074 JNIWrapper("SetStaticObjectField"); 3075#ifndef USDT2 3076 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); 3077#else /* USDT2 */ 3078 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY( 3079 env, clazz, (uintptr_t) fieldID, value); 3080#endif /* USDT2 */ 3081 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); 3082 assert(id->is_static_field_id(), "invalid static field id"); 3083 // Keep JVMTI addition small and only check enabled flag here. 3084 // jni_SetField_probe() assumes that is okay to create handles. 3085 if (JvmtiExport::should_post_field_modification()) { 3086 jvalue field_value; 3087 field_value.l = value; 3088 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); 3089 } 3090 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value)); 3091#ifndef USDT2 3092 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); 3093#else /* USDT2 */ 3094 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN( 3095 ); 3096#endif /* USDT2 */ 3097JNI_END 3098 3099 3100#ifndef USDT2 3101#define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ 3102\ 3103JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3104 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3105 FP_SELECT_##Result( \ 3106 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \ 3107 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \ 3108\ 3109 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3110 assert(id->is_static_field_id(), "invalid static field id"); \ 3111 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3112 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3113 if (JvmtiExport::should_post_field_modification()) { \ 3114 jvalue field_value; \ 3115 field_value.unionType = value; \ 3116 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3117 } \ 3118 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3119 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\ 3120JNI_END 3121 3122DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z) 3123DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b) 3124DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c) 3125DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s) 3126DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i) 3127DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j) 3128DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f) 3129DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d) 3130 3131#else /* USDT2 */ 3132 3133#define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \ 3134 , EntryProbe, ReturnProbe) \ 3135\ 3136JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ 3137 JNIWrapper("SetStatic" XSTR(Result) "Field"); \ 3138 EntryProbe; \ 3139\ 3140 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ 3141 assert(id->is_static_field_id(), "invalid static field id"); \ 3142 /* Keep JVMTI addition small and only check enabled flag here. */ \ 3143 /* jni_SetField_probe() assumes that is okay to create handles. */ \ 3144 if (JvmtiExport::should_post_field_modification()) { \ 3145 jvalue field_value; \ 3146 field_value.unionType = value; \ 3147 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ 3148 } \ 3149 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \ 3150 ReturnProbe;\ 3151JNI_END 3152 3153DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z 3154 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value), 3155 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN()) 3156DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b 3157 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3158 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN()) 3159DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c 3160 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3161 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN()) 3162DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s 3163 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3164 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN()) 3165DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i 3166 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3167 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN()) 3168DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j 3169 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value), 3170 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN()) 3171// Float and double probes don't return value because dtrace doesn't currently support it 3172DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f 3173 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3174 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN()) 3175DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d 3176 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), 3177 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN()) 3178#endif /* USDT2 */ 3179 3180// 3181// String Operations 3182// 3183 3184// Unicode Interface 3185 3186#ifndef USDT2 3187DT_RETURN_MARK_DECL(NewString, jstring); 3188#else /* USDT2 */ 3189DT_RETURN_MARK_DECL(NewString, jstring 3190 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref)); 3191#endif /* USDT2 */ 3192 3193JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len)) 3194 JNIWrapper("NewString"); 3195#ifndef USDT2 3196 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len); 3197#else /* USDT2 */ 3198 HOTSPOT_JNI_NEWSTRING_ENTRY( 3199 env, (uint16_t *) unicodeChars, len); 3200#endif /* USDT2 */ 3201 jstring ret = NULL; 3202 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret); 3203 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL); 3204 ret = (jstring) JNIHandles::make_local(env, string); 3205 return ret; 3206JNI_END 3207 3208 3209JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string)) 3210 JNIWrapper("GetStringLength"); 3211#ifndef USDT2 3212 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string); 3213#else /* USDT2 */ 3214 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY( 3215 env, string); 3216#endif /* USDT2 */ 3217 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string)); 3218#ifndef USDT2 3219 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret); 3220#else /* USDT2 */ 3221 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN( 3222 ret); 3223#endif /* USDT2 */ 3224 return ret; 3225JNI_END 3226 3227 3228JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars( 3229 JNIEnv *env, jstring string, jboolean *isCopy)) 3230 JNIWrapper("GetStringChars"); 3231#ifndef USDT2 3232 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy); 3233#else /* USDT2 */ 3234 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY( 3235 env, string, (uintptr_t *) isCopy); 3236#endif /* USDT2 */ 3237 //%note jni_5 3238 if (isCopy != NULL) { 3239 *isCopy = JNI_TRUE; 3240 } 3241 oop s = JNIHandles::resolve_non_null(string); 3242 int s_len = java_lang_String::length(s); 3243 typeArrayOop s_value = java_lang_String::value(s); 3244 int s_offset = java_lang_String::offset(s); 3245 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination 3246 if (s_len > 0) { 3247 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len); 3248 } 3249 buf[s_len] = 0; 3250#ifndef USDT2 3251 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf); 3252#else /* USDT2 */ 3253 HOTSPOT_JNI_GETSTRINGCHARS_RETURN( 3254 buf); 3255#endif /* USDT2 */ 3256 return buf; 3257JNI_END 3258 3259 3260JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)) 3261 JNIWrapper("ReleaseStringChars"); 3262#ifndef USDT2 3263 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars); 3264#else /* USDT2 */ 3265 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY( 3266 env, str, (uint16_t *) chars); 3267#endif /* USDT2 */ 3268 //%note jni_6 3269 if (chars != NULL) { 3270 // Since String objects are supposed to be immutable, don't copy any 3271 // new data back. A bad user will have to go after the char array. 3272 FreeHeap((void*) chars); 3273 } 3274#ifndef USDT2 3275 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return); 3276#else /* USDT2 */ 3277 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN( 3278); 3279#endif /* USDT2 */ 3280JNI_END 3281 3282 3283// UTF Interface 3284 3285#ifndef USDT2 3286DT_RETURN_MARK_DECL(NewStringUTF, jstring); 3287#else /* USDT2 */ 3288DT_RETURN_MARK_DECL(NewStringUTF, jstring 3289 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref)); 3290#endif /* USDT2 */ 3291 3292JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes)) 3293 JNIWrapper("NewStringUTF"); 3294#ifndef USDT2 3295 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes); 3296#else /* USDT2 */ 3297 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY( 3298 env, (char *) bytes); 3299#endif /* USDT2 */ 3300 jstring ret; 3301 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret); 3302 3303 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL); 3304 ret = (jstring) JNIHandles::make_local(env, result); 3305 return ret; 3306JNI_END 3307 3308 3309JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string)) 3310 JNIWrapper("GetStringUTFLength"); 3311#ifndef USDT2 3312 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string); 3313#else /* USDT2 */ 3314 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY( 3315 env, string); 3316#endif /* USDT2 */ 3317 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string)); 3318#ifndef USDT2 3319 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret); 3320#else /* USDT2 */ 3321 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN( 3322 ret); 3323#endif /* USDT2 */ 3324 return ret; 3325JNI_END 3326 3327 3328JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)) 3329 JNIWrapper("GetStringUTFChars"); 3330#ifndef USDT2 3331 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy); 3332#else /* USDT2 */ 3333 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY( 3334 env, string, (uintptr_t *) isCopy); 3335#endif /* USDT2 */ 3336 oop java_string = JNIHandles::resolve_non_null(string); 3337 size_t length = java_lang_String::utf8_length(java_string); 3338 char* result = AllocateHeap(length + 1, mtInternal); 3339 java_lang_String::as_utf8_string(java_string, result, (int) length + 1); 3340 if (isCopy != NULL) *isCopy = JNI_TRUE; 3341#ifndef USDT2 3342 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result); 3343#else /* USDT2 */ 3344 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN( 3345 result); 3346#endif /* USDT2 */ 3347 return result; 3348JNI_END 3349 3350 3351JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars)) 3352 JNIWrapper("ReleaseStringUTFChars"); 3353#ifndef USDT2 3354 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars); 3355#else /* USDT2 */ 3356 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY( 3357 env, str, (char *) chars); 3358#endif /* USDT2 */ 3359 if (chars != NULL) { 3360 FreeHeap((char*) chars); 3361 } 3362#ifndef USDT2 3363 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return); 3364#else /* USDT2 */ 3365HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN( 3366); 3367#endif /* USDT2 */ 3368JNI_END 3369 3370 3371JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array)) 3372 JNIWrapper("GetArrayLength"); 3373#ifndef USDT2 3374 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array); 3375#else /* USDT2 */ 3376 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY( 3377 env, array); 3378#endif /* USDT2 */ 3379 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array)); 3380 assert(a->is_array(), "must be array"); 3381 jsize ret = a->length(); 3382#ifndef USDT2 3383 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret); 3384#else /* USDT2 */ 3385 HOTSPOT_JNI_GETARRAYLENGTH_RETURN( 3386 ret); 3387#endif /* USDT2 */ 3388 return ret; 3389JNI_END 3390 3391 3392// 3393// Object Array Operations 3394// 3395 3396#ifndef USDT2 3397DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray); 3398#else /* USDT2 */ 3399DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray 3400 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref)); 3401#endif /* USDT2 */ 3402 3403JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement)) 3404 JNIWrapper("NewObjectArray"); 3405#ifndef USDT2 3406 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement); 3407#else /* USDT2 */ 3408 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY( 3409 env, length, elementClass, initialElement); 3410#endif /* USDT2 */ 3411 jobjectArray ret = NULL; 3412 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret); 3413 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass))); 3414 Klass* ako = ek()->array_klass(CHECK_NULL); 3415 KlassHandle ak = KlassHandle(THREAD, ako); 3416 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL); 3417 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL); 3418 oop initial_value = JNIHandles::resolve(initialElement); 3419 if (initial_value != NULL) { // array already initialized with NULL 3420 for (int index = 0; index < length; index++) { 3421 result->obj_at_put(index, initial_value); 3422 } 3423 } 3424 ret = (jobjectArray) JNIHandles::make_local(env, result); 3425 return ret; 3426JNI_END 3427 3428#ifndef USDT2 3429DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject); 3430#else /* USDT2 */ 3431DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject 3432 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref)); 3433#endif /* USDT2 */ 3434 3435JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index)) 3436 JNIWrapper("GetObjectArrayElement"); 3437#ifndef USDT2 3438 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index); 3439#else /* USDT2 */ 3440 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY( 3441 env, array, index); 3442#endif /* USDT2 */ 3443 jobject ret = NULL; 3444 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret); 3445 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3446 if (a->is_within_bounds(index)) { 3447 ret = JNIHandles::make_local(env, a->obj_at(index)); 3448 return ret; 3449 } else { 3450 char buf[jintAsStringSize]; 3451 sprintf(buf, "%d", index); 3452 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3453 } 3454JNI_END 3455 3456#ifndef USDT2 3457DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement); 3458#else /* USDT2 */ 3459DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement 3460 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN()); 3461#endif /* USDT2 */ 3462 3463JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value)) 3464 JNIWrapper("SetObjectArrayElement"); 3465#ifndef USDT2 3466 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value); 3467#else /* USDT2 */ 3468 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY( 3469 env, array, index, value); 3470#endif /* USDT2 */ 3471 DT_VOID_RETURN_MARK(SetObjectArrayElement); 3472 3473 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); 3474 oop v = JNIHandles::resolve(value); 3475 if (a->is_within_bounds(index)) { 3476 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) { 3477 a->obj_at_put(index, v); 3478 } else { 3479 THROW(vmSymbols::java_lang_ArrayStoreException()); 3480 } 3481 } else { 3482 char buf[jintAsStringSize]; 3483 sprintf(buf, "%d", index); 3484 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); 3485 } 3486JNI_END 3487 3488 3489#ifndef USDT2 3490#define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \ 3491\ 3492 DT_RETURN_MARK_DECL(New##Result##Array, Return); \ 3493\ 3494JNI_ENTRY(Return, \ 3495 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3496 JNIWrapper("New" XSTR(Result) "Array"); \ 3497 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\ 3498 Return ret = NULL;\ 3499 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3500\ 3501 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3502 ret = (Return) JNIHandles::make_local(env, obj); \ 3503 return ret;\ 3504JNI_END 3505 3506DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean) 3507DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte) 3508DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short) 3509DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char) 3510DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int) 3511DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long) 3512DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float) 3513DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double) 3514 3515#else /* USDT2 */ 3516 3517#define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \ 3518 ,EntryProbe,ReturnProbe) \ 3519\ 3520 DT_RETURN_MARK_DECL(New##Result##Array, Return \ 3521 , ReturnProbe); \ 3522\ 3523JNI_ENTRY(Return, \ 3524 jni_New##Result##Array(JNIEnv *env, jsize len)) \ 3525 JNIWrapper("New" XSTR(Result) "Array"); \ 3526 EntryProbe; \ 3527 Return ret = NULL;\ 3528 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\ 3529\ 3530 oop obj= oopFactory::Allocator(len, CHECK_0); \ 3531 ret = (Return) JNIHandles::make_local(env, obj); \ 3532 return ret;\ 3533JNI_END 3534 3535DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean, 3536 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len), 3537 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref)) 3538DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte, 3539 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len), 3540 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref)) 3541DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short, 3542 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len), 3543 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref)) 3544DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char, 3545 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len), 3546 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref)) 3547DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int, 3548 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len), 3549 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref)) 3550DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long, 3551 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len), 3552 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref)) 3553DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float, 3554 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len), 3555 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref)) 3556DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double, 3557 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len), 3558 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref)) 3559#endif /* USDT2 */ 3560 3561// Return an address which will fault if the caller writes to it. 3562 3563static char* get_bad_address() { 3564 static char* bad_address = NULL; 3565 if (bad_address == NULL) { 3566 size_t size = os::vm_allocation_granularity(); 3567 bad_address = os::reserve_memory(size); 3568 if (bad_address != NULL) { 3569 os::protect_memory(bad_address, size, os::MEM_PROT_READ, 3570 /*is_committed*/false); 3571 } 3572 } 3573 return bad_address; 3574} 3575 3576 3577#ifndef USDT2 3578#define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \ 3579\ 3580JNI_QUICK_ENTRY(ElementType*, \ 3581 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3582 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3583 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\ 3584 /* allocate an chunk of memory in c land */ \ 3585 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3586 ElementType* result; \ 3587 int len = a->length(); \ 3588 if (len == 0) { \ 3589 /* Empty array: legal but useless, can't return NULL. \ 3590 * Return a pointer to something useless. \ 3591 * Avoid asserts in typeArrayOop. */ \ 3592 result = (ElementType*)get_bad_address(); \ 3593 } else { \ 3594 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \ 3595 /* copy the array to the c chunk */ \ 3596 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3597 } \ 3598 if (isCopy) *isCopy = JNI_TRUE; \ 3599 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\ 3600 return result; \ 3601JNI_END 3602 3603DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3604DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3605DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3606DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3607DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int) 3608DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3609DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3610DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3611 3612#else /* USDT2 */ 3613 3614#define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \ 3615 , EntryProbe, ReturnProbe) \ 3616\ 3617JNI_QUICK_ENTRY(ElementType*, \ 3618 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ 3619 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ 3620 EntryProbe; \ 3621 /* allocate an chunk of memory in c land */ \ 3622 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3623 ElementType* result; \ 3624 int len = a->length(); \ 3625 if (len == 0) { \ 3626 /* Empty array: legal but useless, can't return NULL. \ 3627 * Return a pointer to something useless. \ 3628 * Avoid asserts in typeArrayOop. */ \ 3629 result = (ElementType*)get_bad_address(); \ 3630 } else { \ 3631 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \ 3632 /* copy the array to the c chunk */ \ 3633 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ 3634 } \ 3635 if (isCopy) *isCopy = JNI_TRUE; \ 3636 ReturnProbe; \ 3637 return result; \ 3638JNI_END 3639 3640DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3641 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3642 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result)) 3643DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3644 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3645 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result)) 3646DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3647 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3648 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result)) 3649DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3650 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy), 3651 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result)) 3652DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int 3653 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3654 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result)) 3655DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3656 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3657 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result))) 3658// Float and double probes don't return value because dtrace doesn't currently support it 3659DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3660 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3661 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result)) 3662DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3663 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy), 3664 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result)) 3665#endif /* USDT2 */ 3666 3667#ifndef USDT2 3668#define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \ 3669\ 3670JNI_QUICK_ENTRY(void, \ 3671 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3672 ElementType *buf, jint mode)) \ 3673 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3674 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\ 3675 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3676 int len = a->length(); \ 3677 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3678 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3679 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3680 } \ 3681 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3682 FreeHeap(buf); \ 3683 } \ 3684 } \ 3685 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\ 3686JNI_END 3687 3688DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) 3689DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) 3690DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) 3691DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) 3692DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int) 3693DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long) 3694DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) 3695DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) 3696 3697#else /* USDT2 */ 3698 3699#define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \ 3700 , EntryProbe, ReturnProbe);\ 3701\ 3702JNI_QUICK_ENTRY(void, \ 3703 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ 3704 ElementType *buf, jint mode)) \ 3705 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ 3706 EntryProbe; \ 3707 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3708 int len = a->length(); \ 3709 if (len != 0) { /* Empty array: nothing to free or copy. */ \ 3710 if ((mode == 0) || (mode == JNI_COMMIT)) { \ 3711 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ 3712 } \ 3713 if ((mode == 0) || (mode == JNI_ABORT)) { \ 3714 FreeHeap(buf); \ 3715 } \ 3716 } \ 3717 ReturnProbe; \ 3718JNI_END 3719 3720DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool 3721 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3722 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN()) 3723DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte 3724 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode), 3725 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN()) 3726DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short 3727 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3728 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN()) 3729DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char 3730 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode), 3731 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN()) 3732DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int 3733 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode), 3734 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN()) 3735DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long 3736 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode), 3737 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN()) 3738DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float 3739 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode), 3740 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN()) 3741DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double 3742 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode), 3743 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN()) 3744#endif /* USDT2 */ 3745 3746#ifndef USDT2 3747#define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3748 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\ 3749\ 3750JNI_ENTRY(void, \ 3751jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3752 jsize len, ElementType *buf)) \ 3753 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3754 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3755 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3756 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3757 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3758 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3759 } else { \ 3760 if (len > 0) { \ 3761 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3762 memcpy((u_char*) buf, \ 3763 (u_char*) src->Tag##_at_addr(start), \ 3764 len << sc); \ 3765 } \ 3766 } \ 3767JNI_END 3768 3769DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool) 3770DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3771DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3772DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3773DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int) 3774DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3775DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3776DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3777 3778#else /* USDT2 */ 3779 3780#define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3781 , EntryProbe, ReturnProbe); \ 3782 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \ 3783 , ReturnProbe); \ 3784\ 3785JNI_ENTRY(void, \ 3786jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3787 jsize len, ElementType *buf)) \ 3788 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ 3789 EntryProbe; \ 3790 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ 3791 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3792 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ 3793 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3794 } else { \ 3795 if (len > 0) { \ 3796 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \ 3797 memcpy((u_char*) buf, \ 3798 (u_char*) src->Tag##_at_addr(start), \ 3799 len << sc); \ 3800 } \ 3801 } \ 3802JNI_END 3803 3804DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool 3805 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3806 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN()); 3807DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3808 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3809 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN()); 3810DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3811 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3812 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN()); 3813DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3814 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf), 3815 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN()); 3816DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int 3817 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf), 3818 HOTSPOT_JNI_GETINTARRAYREGION_RETURN()); 3819DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long 3820 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3821 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN()); 3822DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3823 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3824 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN()); 3825DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3826 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3827 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN()); 3828#endif /* USDT2 */ 3829 3830#ifndef USDT2 3831#define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ 3832 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\ 3833\ 3834JNI_ENTRY(void, \ 3835jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3836 jsize len, const ElementType *buf)) \ 3837 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3838 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\ 3839 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3840 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3841 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3842 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3843 } else { \ 3844 if (len > 0) { \ 3845 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3846 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3847 (u_char*) buf, \ 3848 len << sc); \ 3849 } \ 3850 } \ 3851JNI_END 3852 3853DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool) 3854DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) 3855DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short) 3856DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char) 3857DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int) 3858DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long) 3859DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) 3860DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) 3861 3862#else /* USDT2 */ 3863 3864#define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \ 3865 , EntryProbe, ReturnProbe); \ 3866 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \ 3867 ,ReturnProbe); \ 3868\ 3869JNI_ENTRY(void, \ 3870jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ 3871 jsize len, const ElementType *buf)) \ 3872 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ 3873 EntryProbe; \ 3874 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ 3875 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 3876 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ 3877 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ 3878 } else { \ 3879 if (len > 0) { \ 3880 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \ 3881 memcpy((u_char*) dst->Tag##_at_addr(start), \ 3882 (u_char*) buf, \ 3883 len << sc); \ 3884 } \ 3885 } \ 3886JNI_END 3887 3888DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool 3889 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf), 3890 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN()) 3891DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte 3892 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf), 3893 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN()) 3894DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short 3895 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3896 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN()) 3897DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char 3898 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf), 3899 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN()) 3900DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int 3901 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf), 3902 HOTSPOT_JNI_SETINTARRAYREGION_RETURN()) 3903DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long 3904 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf), 3905 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN()) 3906DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float 3907 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf), 3908 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN()) 3909DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double 3910 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf), 3911 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN()) 3912#endif /* USDT2 */ 3913 3914 3915// 3916// Interception of natives 3917// 3918 3919// The RegisterNatives call being attempted tried to register with a method that 3920// is not native. Ask JVM TI what prefixes have been specified. Then check 3921// to see if the native method is now wrapped with the prefixes. See the 3922// SetNativeMethodPrefix(es) functions in the JVM TI Spec for details. 3923static Method* find_prefixed_native(KlassHandle k, 3924 Symbol* name, Symbol* signature, TRAPS) { 3925#if INCLUDE_JVMTI 3926 ResourceMark rm(THREAD); 3927 Method* method; 3928 int name_len = name->utf8_length(); 3929 char* name_str = name->as_utf8(); 3930 int prefix_count; 3931 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); 3932 for (int i = 0; i < prefix_count; i++) { 3933 char* prefix = prefixes[i]; 3934 int prefix_len = (int)strlen(prefix); 3935 3936 // try adding this prefix to the method name and see if it matches another method name 3937 int trial_len = name_len + prefix_len; 3938 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1); 3939 strcpy(trial_name_str, prefix); 3940 strcat(trial_name_str, name_str); 3941 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len); 3942 if (trial_name == NULL) { 3943 continue; // no such symbol, so this prefix wasn't used, try the next prefix 3944 } 3945 method = k()->lookup_method(trial_name, signature); 3946 if (method == NULL) { 3947 continue; // signature doesn't match, try the next prefix 3948 } 3949 if (method->is_native()) { 3950 method->set_is_prefixed_native(); 3951 return method; // wahoo, we found a prefixed version of the method, return it 3952 } 3953 // found as non-native, so prefix is good, add it, probably just need more prefixes 3954 name_len = trial_len; 3955 name_str = trial_name_str; 3956 } 3957#endif // INCLUDE_JVMTI 3958 return NULL; // not found 3959} 3960 3961static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) { 3962 Method* method = k()->lookup_method(name, signature); 3963 if (method == NULL) { 3964 ResourceMark rm; 3965 stringStream st; 3966 st.print("Method %s name or signature does not match", 3967 Method::name_and_sig_as_C_string(k(), name, signature)); 3968 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3969 } 3970 if (!method->is_native()) { 3971 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es) 3972 method = find_prefixed_native(k, name, signature, THREAD); 3973 if (method == NULL) { 3974 ResourceMark rm; 3975 stringStream st; 3976 st.print("Method %s is not declared as native", 3977 Method::name_and_sig_as_C_string(k(), name, signature)); 3978 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); 3979 } 3980 } 3981 3982 if (entry != NULL) { 3983 method->set_native_function(entry, 3984 Method::native_bind_event_is_interesting); 3985 } else { 3986 method->clear_native_function(); 3987 } 3988 if (PrintJNIResolving) { 3989 ResourceMark rm(THREAD); 3990 tty->print_cr("[Registering JNI native method %s.%s]", 3991 method->method_holder()->external_name(), 3992 method->name()->as_C_string()); 3993 } 3994 return true; 3995} 3996 3997#ifndef USDT2 3998DT_RETURN_MARK_DECL(RegisterNatives, jint); 3999#else /* USDT2 */ 4000DT_RETURN_MARK_DECL(RegisterNatives, jint 4001 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref)); 4002#endif /* USDT2 */ 4003 4004JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz, 4005 const JNINativeMethod *methods, 4006 jint nMethods)) 4007 JNIWrapper("RegisterNatives"); 4008#ifndef USDT2 4009 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods); 4010#else /* USDT2 */ 4011 HOTSPOT_JNI_REGISTERNATIVES_ENTRY( 4012 env, clazz, (void *) methods, nMethods); 4013#endif /* USDT2 */ 4014 jint ret = 0; 4015 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret); 4016 4017 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 4018 4019 for (int index = 0; index < nMethods; index++) { 4020 const char* meth_name = methods[index].name; 4021 const char* meth_sig = methods[index].signature; 4022 int meth_name_len = (int)strlen(meth_name); 4023 4024 // The class should have been loaded (we have an instance of the class 4025 // passed in) so the method and signature should already be in the symbol 4026 // table. If they're not there, the method doesn't exist. 4027 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len); 4028 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig)); 4029 4030 if (name == NULL || signature == NULL) { 4031 ResourceMark rm; 4032 stringStream st; 4033 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig); 4034 // Must return negative value on failure 4035 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1); 4036 } 4037 4038 bool res = register_native(h_k, name, signature, 4039 (address) methods[index].fnPtr, THREAD); 4040 if (!res) { 4041 ret = -1; 4042 break; 4043 } 4044 } 4045 return ret; 4046JNI_END 4047 4048 4049JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz)) 4050 JNIWrapper("UnregisterNatives"); 4051#ifndef USDT2 4052 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz); 4053#else /* USDT2 */ 4054 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY( 4055 env, clazz); 4056#endif /* USDT2 */ 4057 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 4058 //%note jni_2 4059 if (k->oop_is_instance()) { 4060 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) { 4061 Method* m = InstanceKlass::cast(k)->methods()->at(index); 4062 if (m->is_native()) { 4063 m->clear_native_function(); 4064 m->set_signature_handler(NULL); 4065 } 4066 } 4067 } 4068#ifndef USDT2 4069 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0); 4070#else /* USDT2 */ 4071 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN( 4072 0); 4073#endif /* USDT2 */ 4074 return 0; 4075JNI_END 4076 4077// 4078// Monitor functions 4079// 4080 4081#ifndef USDT2 4082DT_RETURN_MARK_DECL(MonitorEnter, jint); 4083#else /* USDT2 */ 4084DT_RETURN_MARK_DECL(MonitorEnter, jint 4085 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref)); 4086#endif /* USDT2 */ 4087 4088JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj)) 4089#ifndef USDT2 4090 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj); 4091#else /* USDT2 */ 4092 HOTSPOT_JNI_MONITORENTER_ENTRY( 4093 env, jobj); 4094#endif /* USDT2 */ 4095 jint ret = JNI_ERR; 4096 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret); 4097 4098 // If the object is null, we can't do anything with it 4099 if (jobj == NULL) { 4100 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4101 } 4102 4103 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); 4104 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR)); 4105 ret = JNI_OK; 4106 return ret; 4107JNI_END 4108 4109#ifndef USDT2 4110DT_RETURN_MARK_DECL(MonitorExit, jint); 4111#else /* USDT2 */ 4112DT_RETURN_MARK_DECL(MonitorExit, jint 4113 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref)); 4114#endif /* USDT2 */ 4115 4116JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj)) 4117#ifndef USDT2 4118 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj); 4119#else /* USDT2 */ 4120 HOTSPOT_JNI_MONITOREXIT_ENTRY( 4121 env, jobj); 4122#endif /* USDT2 */ 4123 jint ret = JNI_ERR; 4124 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret); 4125 4126 // Don't do anything with a null object 4127 if (jobj == NULL) { 4128 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); 4129 } 4130 4131 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); 4132 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR)); 4133 4134 ret = JNI_OK; 4135 return ret; 4136JNI_END 4137 4138// 4139// Extensions 4140// 4141 4142#ifndef USDT2 4143DT_VOID_RETURN_MARK_DECL(GetStringRegion); 4144#else /* USDT2 */ 4145DT_VOID_RETURN_MARK_DECL(GetStringRegion 4146 , HOTSPOT_JNI_GETSTRINGREGION_RETURN()); 4147#endif /* USDT2 */ 4148 4149JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf)) 4150 JNIWrapper("GetStringRegion"); 4151#ifndef USDT2 4152 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf); 4153#else /* USDT2 */ 4154 HOTSPOT_JNI_GETSTRINGREGION_ENTRY( 4155 env, string, start, len, buf); 4156#endif /* USDT2 */ 4157 DT_VOID_RETURN_MARK(GetStringRegion); 4158 oop s = JNIHandles::resolve_non_null(string); 4159 int s_len = java_lang_String::length(s); 4160 if (start < 0 || len < 0 || start + len > s_len) { 4161 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4162 } else { 4163 if (len > 0) { 4164 int s_offset = java_lang_String::offset(s); 4165 typeArrayOop s_value = java_lang_String::value(s); 4166 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len); 4167 } 4168 } 4169JNI_END 4170 4171#ifndef USDT2 4172DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion); 4173#else /* USDT2 */ 4174DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion 4175 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN()); 4176#endif /* USDT2 */ 4177 4178JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf)) 4179 JNIWrapper("GetStringUTFRegion"); 4180#ifndef USDT2 4181 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf); 4182#else /* USDT2 */ 4183 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY( 4184 env, string, start, len, buf); 4185#endif /* USDT2 */ 4186 DT_VOID_RETURN_MARK(GetStringUTFRegion); 4187 oop s = JNIHandles::resolve_non_null(string); 4188 int s_len = java_lang_String::length(s); 4189 if (start < 0 || len < 0 || start + len > s_len) { 4190 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); 4191 } else { 4192 //%note jni_7 4193 if (len > 0) { 4194 ResourceMark rm(THREAD); 4195 char *utf_region = java_lang_String::as_utf8_string(s, start, len); 4196 int utf_len = (int)strlen(utf_region); 4197 memcpy(buf, utf_region, utf_len); 4198 buf[utf_len] = 0; 4199 } else { 4200 // JDK null-terminates the buffer even in len is zero 4201 if (buf != NULL) { 4202 buf[0] = 0; 4203 } 4204 } 4205 } 4206JNI_END 4207 4208 4209JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)) 4210 JNIWrapper("GetPrimitiveArrayCritical"); 4211#ifndef USDT2 4212 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy); 4213#else /* USDT2 */ 4214 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY( 4215 env, array, (uintptr_t *) isCopy); 4216#endif /* USDT2 */ 4217 GC_locker::lock_critical(thread); 4218 if (isCopy != NULL) { 4219 *isCopy = JNI_FALSE; 4220 } 4221 oop a = JNIHandles::resolve_non_null(array); 4222 assert(a->is_array(), "just checking"); 4223 BasicType type; 4224 if (a->is_objArray()) { 4225 type = T_OBJECT; 4226 } else { 4227 type = TypeArrayKlass::cast(a->klass())->element_type(); 4228 } 4229 void* ret = arrayOop(a)->base(type); 4230#ifndef USDT2 4231 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret); 4232#else /* USDT2 */ 4233 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN( 4234 ret); 4235#endif /* USDT2 */ 4236 return ret; 4237JNI_END 4238 4239 4240JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)) 4241 JNIWrapper("ReleasePrimitiveArrayCritical"); 4242#ifndef USDT2 4243 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode); 4244#else /* USDT2 */ 4245 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY( 4246 env, array, carray, mode); 4247#endif /* USDT2 */ 4248 // The array, carray and mode arguments are ignored 4249 GC_locker::unlock_critical(thread); 4250#ifndef USDT2 4251 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return); 4252#else /* USDT2 */ 4253HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN( 4254); 4255#endif /* USDT2 */ 4256JNI_END 4257 4258 4259JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy)) 4260 JNIWrapper("GetStringCritical"); 4261#ifndef USDT2 4262 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy); 4263#else /* USDT2 */ 4264 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY( 4265 env, string, (uintptr_t *) isCopy); 4266#endif /* USDT2 */ 4267 GC_locker::lock_critical(thread); 4268 if (isCopy != NULL) { 4269 *isCopy = JNI_FALSE; 4270 } 4271 oop s = JNIHandles::resolve_non_null(string); 4272 int s_len = java_lang_String::length(s); 4273 typeArrayOop s_value = java_lang_String::value(s); 4274 int s_offset = java_lang_String::offset(s); 4275 const jchar* ret; 4276 if (s_len > 0) { 4277 ret = s_value->char_at_addr(s_offset); 4278 } else { 4279 ret = (jchar*) s_value->base(T_CHAR); 4280 } 4281#ifndef USDT2 4282 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret); 4283#else /* USDT2 */ 4284 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN( 4285 (uint16_t *) ret); 4286#endif /* USDT2 */ 4287 return ret; 4288JNI_END 4289 4290 4291JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars)) 4292 JNIWrapper("ReleaseStringCritical"); 4293#ifndef USDT2 4294 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars); 4295#else /* USDT2 */ 4296 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY( 4297 env, str, (uint16_t *) chars); 4298#endif /* USDT2 */ 4299 // The str and chars arguments are ignored 4300 GC_locker::unlock_critical(thread); 4301#ifndef USDT2 4302 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return); 4303#else /* USDT2 */ 4304HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN( 4305); 4306#endif /* USDT2 */ 4307JNI_END 4308 4309 4310JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref)) 4311 JNIWrapper("jni_NewWeakGlobalRef"); 4312#ifndef USDT2 4313 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref); 4314#else /* USDT2 */ 4315 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY( 4316 env, ref); 4317#endif /* USDT2 */ 4318 Handle ref_handle(thread, JNIHandles::resolve(ref)); 4319 jweak ret = JNIHandles::make_weak_global(ref_handle); 4320#ifndef USDT2 4321 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret); 4322#else /* USDT2 */ 4323 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN( 4324 ret); 4325#endif /* USDT2 */ 4326 return ret; 4327JNI_END 4328 4329// Must be JNI_ENTRY (with HandleMark) 4330JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref)) 4331 JNIWrapper("jni_DeleteWeakGlobalRef"); 4332#ifndef USDT2 4333 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref); 4334#else /* USDT2 */ 4335 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY( 4336 env, ref); 4337#endif /* USDT2 */ 4338 JNIHandles::destroy_weak_global(ref); 4339#ifndef USDT2 4340 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return); 4341#else /* USDT2 */ 4342 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN( 4343 ); 4344#endif /* USDT2 */ 4345JNI_END 4346 4347 4348JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env)) 4349 JNIWrapper("jni_ExceptionCheck"); 4350#ifndef USDT2 4351 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env); 4352#else /* USDT2 */ 4353 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY( 4354 env); 4355#endif /* USDT2 */ 4356 jni_check_async_exceptions(thread); 4357 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE; 4358#ifndef USDT2 4359 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret); 4360#else /* USDT2 */ 4361 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN( 4362 ret); 4363#endif /* USDT2 */ 4364 return ret; 4365JNI_END 4366 4367 4368// Initialization state for three routines below relating to 4369// java.nio.DirectBuffers 4370static jint directBufferSupportInitializeStarted = 0; 4371static volatile jint directBufferSupportInitializeEnded = 0; 4372static volatile jint directBufferSupportInitializeFailed = 0; 4373static jclass bufferClass = NULL; 4374static jclass directBufferClass = NULL; 4375static jclass directByteBufferClass = NULL; 4376static jmethodID directByteBufferConstructor = NULL; 4377static jfieldID directBufferAddressField = NULL; 4378static jfieldID bufferCapacityField = NULL; 4379 4380static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) { 4381 Handle loader; // null (bootstrap) loader 4382 Handle protection_domain; // null protection domain 4383 4384 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL); 4385 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL); 4386 4387 if (TraceClassResolution && result != NULL) { 4388 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); 4389 } 4390 return result; 4391} 4392 4393// These lookups are done with the NULL (bootstrap) ClassLoader to 4394// circumvent any security checks that would be done by jni_FindClass. 4395JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env)) 4396{ 4397 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; } 4398 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; } 4399 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; } 4400 return true; 4401} 4402JNI_END 4403 4404 4405static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) { 4406 if (directBufferSupportInitializeFailed) { 4407 return false; 4408 } 4409 4410 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) { 4411 if (!lookupDirectBufferClasses(env)) { 4412 directBufferSupportInitializeFailed = 1; 4413 return false; 4414 } 4415 4416 // Make global references for these 4417 bufferClass = (jclass) env->NewGlobalRef(bufferClass); 4418 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass); 4419 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass); 4420 4421 // Get needed field and method IDs 4422 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V"); 4423 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J"); 4424 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I"); 4425 4426 if ((directByteBufferConstructor == NULL) || 4427 (directBufferAddressField == NULL) || 4428 (bufferCapacityField == NULL)) { 4429 directBufferSupportInitializeFailed = 1; 4430 return false; 4431 } 4432 4433 directBufferSupportInitializeEnded = 1; 4434 } else { 4435 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) { 4436 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls 4437 // os::sleep which requires the VM state transition. On other platforms, it 4438 // is not necessary. The following call to change the VM state is purposely 4439 // put inside the loop to avoid potential deadlock when multiple threads 4440 // try to call this method. See 6791815 for more details. 4441 ThreadInVMfromNative tivn(thread); 4442 os::yield_all(); 4443 } 4444 } 4445 4446 return !directBufferSupportInitializeFailed; 4447} 4448 4449extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity) 4450{ 4451 // thread_from_jni_environment() will block if VM is gone. 4452 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4453 4454 JNIWrapper("jni_NewDirectByteBuffer"); 4455#ifndef USDT2 4456 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity); 4457#else /* USDT2 */ 4458 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY( 4459 env, address, capacity); 4460#endif /* USDT2 */ 4461 4462 if (!directBufferSupportInitializeEnded) { 4463 if (!initializeDirectBufferSupport(env, thread)) { 4464#ifndef USDT2 4465 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL); 4466#else /* USDT2 */ 4467 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4468 NULL); 4469#endif /* USDT2 */ 4470 return NULL; 4471 } 4472 } 4473 4474 // Being paranoid about accidental sign extension on address 4475 jlong addr = (jlong) ((uintptr_t) address); 4476 // NOTE that package-private DirectByteBuffer constructor currently 4477 // takes int capacity 4478 jint cap = (jint) capacity; 4479 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap); 4480#ifndef USDT2 4481 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret); 4482#else /* USDT2 */ 4483 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN( 4484 ret); 4485#endif /* USDT2 */ 4486 return ret; 4487} 4488 4489#ifndef USDT2 4490DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*); 4491#else /* USDT2 */ 4492DT_RETURN_MARK_DECL(GetDirectBufferAddress, void* 4493 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref)); 4494#endif /* USDT2 */ 4495 4496extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf) 4497{ 4498 // thread_from_jni_environment() will block if VM is gone. 4499 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4500 4501 JNIWrapper("jni_GetDirectBufferAddress"); 4502#ifndef USDT2 4503 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf); 4504#else /* USDT2 */ 4505 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY( 4506 env, buf); 4507#endif /* USDT2 */ 4508 void* ret = NULL; 4509 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret); 4510 4511 if (!directBufferSupportInitializeEnded) { 4512 if (!initializeDirectBufferSupport(env, thread)) { 4513 return 0; 4514 } 4515 } 4516 4517 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) { 4518 return 0; 4519 } 4520 4521 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField); 4522 return ret; 4523} 4524 4525#ifndef USDT2 4526DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong); 4527#else /* USDT2 */ 4528DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong 4529 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref)); 4530#endif /* USDT2 */ 4531 4532extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf) 4533{ 4534 // thread_from_jni_environment() will block if VM is gone. 4535 JavaThread* thread = JavaThread::thread_from_jni_environment(env); 4536 4537 JNIWrapper("jni_GetDirectBufferCapacity"); 4538#ifndef USDT2 4539 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf); 4540#else /* USDT2 */ 4541 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY( 4542 env, buf); 4543#endif /* USDT2 */ 4544 jlong ret = -1; 4545 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret); 4546 4547 if (!directBufferSupportInitializeEnded) { 4548 if (!initializeDirectBufferSupport(env, thread)) { 4549 ret = 0; 4550 return ret; 4551 } 4552 } 4553 4554 if (buf == NULL) { 4555 return -1; 4556 } 4557 4558 if (!env->IsInstanceOf(buf, directBufferClass)) { 4559 return -1; 4560 } 4561 4562 // NOTE that capacity is currently an int in the implementation 4563 ret = env->GetIntField(buf, bufferCapacityField); 4564 return ret; 4565} 4566 4567 4568JNI_LEAF(jint, jni_GetVersion(JNIEnv *env)) 4569 JNIWrapper("GetVersion"); 4570#ifndef USDT2 4571 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env); 4572#else /* USDT2 */ 4573 HOTSPOT_JNI_GETVERSION_ENTRY( 4574 env); 4575#endif /* USDT2 */ 4576#ifndef USDT2 4577 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion); 4578#else /* USDT2 */ 4579 HOTSPOT_JNI_GETVERSION_RETURN( 4580 CurrentVersion); 4581#endif /* USDT2 */ 4582 return CurrentVersion; 4583JNI_END 4584 4585extern struct JavaVM_ main_vm; 4586 4587JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm)) 4588 JNIWrapper("jni_GetJavaVM"); 4589#ifndef USDT2 4590 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm); 4591#else /* USDT2 */ 4592 HOTSPOT_JNI_GETJAVAVM_ENTRY( 4593 env, (void **) vm); 4594#endif /* USDT2 */ 4595 *vm = (JavaVM *)(&main_vm); 4596#ifndef USDT2 4597 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK); 4598#else /* USDT2 */ 4599 HOTSPOT_JNI_GETJAVAVM_RETURN( 4600 JNI_OK); 4601#endif /* USDT2 */ 4602 return JNI_OK; 4603JNI_END 4604 4605// Structure containing all jni functions 4606struct JNINativeInterface_ jni_NativeInterface = { 4607 NULL, 4608 NULL, 4609 NULL, 4610 4611 NULL, 4612 4613 jni_GetVersion, 4614 4615 jni_DefineClass, 4616 jni_FindClass, 4617 4618 jni_FromReflectedMethod, 4619 jni_FromReflectedField, 4620 4621 jni_ToReflectedMethod, 4622 4623 jni_GetSuperclass, 4624 jni_IsAssignableFrom, 4625 4626 jni_ToReflectedField, 4627 4628 jni_Throw, 4629 jni_ThrowNew, 4630 jni_ExceptionOccurred, 4631 jni_ExceptionDescribe, 4632 jni_ExceptionClear, 4633 jni_FatalError, 4634 4635 jni_PushLocalFrame, 4636 jni_PopLocalFrame, 4637 4638 jni_NewGlobalRef, 4639 jni_DeleteGlobalRef, 4640 jni_DeleteLocalRef, 4641 jni_IsSameObject, 4642 4643 jni_NewLocalRef, 4644 jni_EnsureLocalCapacity, 4645 4646 jni_AllocObject, 4647 jni_NewObject, 4648 jni_NewObjectV, 4649 jni_NewObjectA, 4650 4651 jni_GetObjectClass, 4652 jni_IsInstanceOf, 4653 4654 jni_GetMethodID, 4655 4656 jni_CallObjectMethod, 4657 jni_CallObjectMethodV, 4658 jni_CallObjectMethodA, 4659 jni_CallBooleanMethod, 4660 jni_CallBooleanMethodV, 4661 jni_CallBooleanMethodA, 4662 jni_CallByteMethod, 4663 jni_CallByteMethodV, 4664 jni_CallByteMethodA, 4665 jni_CallCharMethod, 4666 jni_CallCharMethodV, 4667 jni_CallCharMethodA, 4668 jni_CallShortMethod, 4669 jni_CallShortMethodV, 4670 jni_CallShortMethodA, 4671 jni_CallIntMethod, 4672 jni_CallIntMethodV, 4673 jni_CallIntMethodA, 4674 jni_CallLongMethod, 4675 jni_CallLongMethodV, 4676 jni_CallLongMethodA, 4677 jni_CallFloatMethod, 4678 jni_CallFloatMethodV, 4679 jni_CallFloatMethodA, 4680 jni_CallDoubleMethod, 4681 jni_CallDoubleMethodV, 4682 jni_CallDoubleMethodA, 4683 jni_CallVoidMethod, 4684 jni_CallVoidMethodV, 4685 jni_CallVoidMethodA, 4686 4687 jni_CallNonvirtualObjectMethod, 4688 jni_CallNonvirtualObjectMethodV, 4689 jni_CallNonvirtualObjectMethodA, 4690 jni_CallNonvirtualBooleanMethod, 4691 jni_CallNonvirtualBooleanMethodV, 4692 jni_CallNonvirtualBooleanMethodA, 4693 jni_CallNonvirtualByteMethod, 4694 jni_CallNonvirtualByteMethodV, 4695 jni_CallNonvirtualByteMethodA, 4696 jni_CallNonvirtualCharMethod, 4697 jni_CallNonvirtualCharMethodV, 4698 jni_CallNonvirtualCharMethodA, 4699 jni_CallNonvirtualShortMethod, 4700 jni_CallNonvirtualShortMethodV, 4701 jni_CallNonvirtualShortMethodA, 4702 jni_CallNonvirtualIntMethod, 4703 jni_CallNonvirtualIntMethodV, 4704 jni_CallNonvirtualIntMethodA, 4705 jni_CallNonvirtualLongMethod, 4706 jni_CallNonvirtualLongMethodV, 4707 jni_CallNonvirtualLongMethodA, 4708 jni_CallNonvirtualFloatMethod, 4709 jni_CallNonvirtualFloatMethodV, 4710 jni_CallNonvirtualFloatMethodA, 4711 jni_CallNonvirtualDoubleMethod, 4712 jni_CallNonvirtualDoubleMethodV, 4713 jni_CallNonvirtualDoubleMethodA, 4714 jni_CallNonvirtualVoidMethod, 4715 jni_CallNonvirtualVoidMethodV, 4716 jni_CallNonvirtualVoidMethodA, 4717 4718 jni_GetFieldID, 4719 4720 jni_GetObjectField, 4721 jni_GetBooleanField, 4722 jni_GetByteField, 4723 jni_GetCharField, 4724 jni_GetShortField, 4725 jni_GetIntField, 4726 jni_GetLongField, 4727 jni_GetFloatField, 4728 jni_GetDoubleField, 4729 4730 jni_SetObjectField, 4731 jni_SetBooleanField, 4732 jni_SetByteField, 4733 jni_SetCharField, 4734 jni_SetShortField, 4735 jni_SetIntField, 4736 jni_SetLongField, 4737 jni_SetFloatField, 4738 jni_SetDoubleField, 4739 4740 jni_GetStaticMethodID, 4741 4742 jni_CallStaticObjectMethod, 4743 jni_CallStaticObjectMethodV, 4744 jni_CallStaticObjectMethodA, 4745 jni_CallStaticBooleanMethod, 4746 jni_CallStaticBooleanMethodV, 4747 jni_CallStaticBooleanMethodA, 4748 jni_CallStaticByteMethod, 4749 jni_CallStaticByteMethodV, 4750 jni_CallStaticByteMethodA, 4751 jni_CallStaticCharMethod, 4752 jni_CallStaticCharMethodV, 4753 jni_CallStaticCharMethodA, 4754 jni_CallStaticShortMethod, 4755 jni_CallStaticShortMethodV, 4756 jni_CallStaticShortMethodA, 4757 jni_CallStaticIntMethod, 4758 jni_CallStaticIntMethodV, 4759 jni_CallStaticIntMethodA, 4760 jni_CallStaticLongMethod, 4761 jni_CallStaticLongMethodV, 4762 jni_CallStaticLongMethodA, 4763 jni_CallStaticFloatMethod, 4764 jni_CallStaticFloatMethodV, 4765 jni_CallStaticFloatMethodA, 4766 jni_CallStaticDoubleMethod, 4767 jni_CallStaticDoubleMethodV, 4768 jni_CallStaticDoubleMethodA, 4769 jni_CallStaticVoidMethod, 4770 jni_CallStaticVoidMethodV, 4771 jni_CallStaticVoidMethodA, 4772 4773 jni_GetStaticFieldID, 4774 4775 jni_GetStaticObjectField, 4776 jni_GetStaticBooleanField, 4777 jni_GetStaticByteField, 4778 jni_GetStaticCharField, 4779 jni_GetStaticShortField, 4780 jni_GetStaticIntField, 4781 jni_GetStaticLongField, 4782 jni_GetStaticFloatField, 4783 jni_GetStaticDoubleField, 4784 4785 jni_SetStaticObjectField, 4786 jni_SetStaticBooleanField, 4787 jni_SetStaticByteField, 4788 jni_SetStaticCharField, 4789 jni_SetStaticShortField, 4790 jni_SetStaticIntField, 4791 jni_SetStaticLongField, 4792 jni_SetStaticFloatField, 4793 jni_SetStaticDoubleField, 4794 4795 jni_NewString, 4796 jni_GetStringLength, 4797 jni_GetStringChars, 4798 jni_ReleaseStringChars, 4799 4800 jni_NewStringUTF, 4801 jni_GetStringUTFLength, 4802 jni_GetStringUTFChars, 4803 jni_ReleaseStringUTFChars, 4804 4805 jni_GetArrayLength, 4806 4807 jni_NewObjectArray, 4808 jni_GetObjectArrayElement, 4809 jni_SetObjectArrayElement, 4810 4811 jni_NewBooleanArray, 4812 jni_NewByteArray, 4813 jni_NewCharArray, 4814 jni_NewShortArray, 4815 jni_NewIntArray, 4816 jni_NewLongArray, 4817 jni_NewFloatArray, 4818 jni_NewDoubleArray, 4819 4820 jni_GetBooleanArrayElements, 4821 jni_GetByteArrayElements, 4822 jni_GetCharArrayElements, 4823 jni_GetShortArrayElements, 4824 jni_GetIntArrayElements, 4825 jni_GetLongArrayElements, 4826 jni_GetFloatArrayElements, 4827 jni_GetDoubleArrayElements, 4828 4829 jni_ReleaseBooleanArrayElements, 4830 jni_ReleaseByteArrayElements, 4831 jni_ReleaseCharArrayElements, 4832 jni_ReleaseShortArrayElements, 4833 jni_ReleaseIntArrayElements, 4834 jni_ReleaseLongArrayElements, 4835 jni_ReleaseFloatArrayElements, 4836 jni_ReleaseDoubleArrayElements, 4837 4838 jni_GetBooleanArrayRegion, 4839 jni_GetByteArrayRegion, 4840 jni_GetCharArrayRegion, 4841 jni_GetShortArrayRegion, 4842 jni_GetIntArrayRegion, 4843 jni_GetLongArrayRegion, 4844 jni_GetFloatArrayRegion, 4845 jni_GetDoubleArrayRegion, 4846 4847 jni_SetBooleanArrayRegion, 4848 jni_SetByteArrayRegion, 4849 jni_SetCharArrayRegion, 4850 jni_SetShortArrayRegion, 4851 jni_SetIntArrayRegion, 4852 jni_SetLongArrayRegion, 4853 jni_SetFloatArrayRegion, 4854 jni_SetDoubleArrayRegion, 4855 4856 jni_RegisterNatives, 4857 jni_UnregisterNatives, 4858 4859 jni_MonitorEnter, 4860 jni_MonitorExit, 4861 4862 jni_GetJavaVM, 4863 4864 jni_GetStringRegion, 4865 jni_GetStringUTFRegion, 4866 4867 jni_GetPrimitiveArrayCritical, 4868 jni_ReleasePrimitiveArrayCritical, 4869 4870 jni_GetStringCritical, 4871 jni_ReleaseStringCritical, 4872 4873 jni_NewWeakGlobalRef, 4874 jni_DeleteWeakGlobalRef, 4875 4876 jni_ExceptionCheck, 4877 4878 jni_NewDirectByteBuffer, 4879 jni_GetDirectBufferAddress, 4880 jni_GetDirectBufferCapacity, 4881 4882 // New 1_6 features 4883 4884 jni_GetObjectRefType 4885}; 4886 4887 4888// For jvmti use to modify jni function table. 4889// Java threads in native contiues to run until it is transitioned 4890// to VM at safepoint. Before the transition or before it is blocked 4891// for safepoint it may access jni function table. VM could crash if 4892// any java thread access the jni function table in the middle of memcpy. 4893// To avoid this each function pointers are copied automically. 4894void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) { 4895 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); 4896 intptr_t *a = (intptr_t *) jni_functions(); 4897 intptr_t *b = (intptr_t *) new_jni_NativeInterface; 4898 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) { 4899 Atomic::store_ptr(*b++, a++); 4900 } 4901} 4902 4903void quicken_jni_functions() { 4904 // Replace Get<Primitive>Field with fast versions 4905 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access() 4906 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls 4907#if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2) 4908 // windows x86 currently needs SEH wrapper and the gain of the fast 4909 // versions currently isn't certain for server vm on uniprocessor. 4910 && os::is_MP() 4911#endif 4912 ) { 4913 address func; 4914 func = JNI_FastGetField::generate_fast_get_boolean_field(); 4915 if (func != (address)-1) { 4916 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func; 4917 } 4918 func = JNI_FastGetField::generate_fast_get_byte_field(); 4919 if (func != (address)-1) { 4920 jni_NativeInterface.GetByteField = (GetByteField_t)func; 4921 } 4922 func = JNI_FastGetField::generate_fast_get_char_field(); 4923 if (func != (address)-1) { 4924 jni_NativeInterface.GetCharField = (GetCharField_t)func; 4925 } 4926 func = JNI_FastGetField::generate_fast_get_short_field(); 4927 if (func != (address)-1) { 4928 jni_NativeInterface.GetShortField = (GetShortField_t)func; 4929 } 4930 func = JNI_FastGetField::generate_fast_get_int_field(); 4931 if (func != (address)-1) { 4932 jni_NativeInterface.GetIntField = (GetIntField_t)func; 4933 } 4934 func = JNI_FastGetField::generate_fast_get_long_field(); 4935 if (func != (address)-1) { 4936 jni_NativeInterface.GetLongField = (GetLongField_t)func; 4937 } 4938 func = JNI_FastGetField::generate_fast_get_float_field(); 4939 if (func != (address)-1) { 4940 jni_NativeInterface.GetFloatField = (GetFloatField_t)func; 4941 } 4942 func = JNI_FastGetField::generate_fast_get_double_field(); 4943 if (func != (address)-1) { 4944 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func; 4945 } 4946 } 4947} 4948 4949// Returns the function structure 4950struct JNINativeInterface_* jni_functions() { 4951#if INCLUDE_JNI_CHECK 4952 if (CheckJNICalls) return jni_functions_check(); 4953#endif // INCLUDE_JNI_CHECK 4954 return &jni_NativeInterface; 4955} 4956 4957// Returns the function structure 4958struct JNINativeInterface_* jni_functions_nocheck() { 4959 return &jni_NativeInterface; 4960} 4961 4962 4963// Invocation API 4964 4965 4966// Forward declaration 4967extern const struct JNIInvokeInterface_ jni_InvokeInterface; 4968 4969// Global invocation API vars 4970volatile jint vm_created = 0; 4971// Indicate whether it is safe to recreate VM 4972volatile jint safe_to_recreate_vm = 1; 4973struct JavaVM_ main_vm = {&jni_InvokeInterface}; 4974 4975 4976#define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */ 4977enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL }; 4978 4979#ifndef USDT2 4980HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*); 4981DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint); 4982#else /* USDT2 */ 4983DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint 4984 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref)); 4985#endif /* USDT2 */ 4986 4987_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) { 4988#ifndef USDT2 4989 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_); 4990#else /* USDT2 */ 4991 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY( 4992 args_); 4993#endif /* USDT2 */ 4994 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_; 4995 jint ret = JNI_ERR; 4996 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret); 4997 4998 if (Threads::is_supported_jni_version(args->version)) { 4999 ret = JNI_OK; 5000 } 5001 // 1.1 style no longer supported in hotspot. 5002 // According the JNI spec, we should update args->version on return. 5003 // We also use the structure to communicate with launcher about default 5004 // stack size. 5005 if (args->version == JNI_VERSION_1_1) { 5006 args->version = JNI_VERSION_1_2; 5007 // javaStackSize is int in arguments structure 5008 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow"); 5009 args->javaStackSize = (jint)(ThreadStackSize * K); 5010 } 5011 return ret; 5012} 5013 5014#ifndef PRODUCT 5015 5016#include "gc_implementation/shared/gcTimer.hpp" 5017#include "gc_interface/collectedHeap.hpp" 5018#if INCLUDE_ALL_GCS 5019#include "gc_implementation/g1/heapRegionRemSet.hpp" 5020#endif 5021#include "utilities/quickSort.hpp" 5022#if INCLUDE_VM_STRUCTS 5023#include "runtime/vmStructs.hpp" 5024#endif 5025 5026#define run_unit_test(unit_test_function_call) \ 5027 tty->print_cr("Running test: " #unit_test_function_call); \ 5028 unit_test_function_call 5029 5030void execute_internal_vm_tests() { 5031 if (ExecuteInternalVMTests) { 5032 tty->print_cr("Running internal VM tests"); 5033 run_unit_test(GlobalDefinitions::test_globals()); 5034 run_unit_test(GCTimerAllTest::all()); 5035 run_unit_test(arrayOopDesc::test_max_array_length()); 5036 run_unit_test(CollectedHeap::test_is_in()); 5037 run_unit_test(QuickSort::test_quick_sort()); 5038 run_unit_test(AltHashing::test_alt_hash()); 5039#if INCLUDE_VM_STRUCTS 5040 run_unit_test(VMStructs::test()); 5041#endif 5042#if INCLUDE_ALL_GCS 5043 run_unit_test(HeapRegionRemSet::test_prt()); 5044#endif 5045 tty->print_cr("All internal VM tests passed"); 5046 } 5047} 5048 5049#undef run_unit_test 5050 5051#endif 5052 5053#ifndef USDT2 5054HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5055DT_RETURN_MARK_DECL(CreateJavaVM, jint); 5056#else /* USDT2 */ 5057DT_RETURN_MARK_DECL(CreateJavaVM, jint 5058 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref)); 5059#endif /* USDT2 */ 5060 5061_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) { 5062#ifndef USDT2 5063 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); 5064#else /* USDT2 */ 5065 HOTSPOT_JNI_CREATEJAVAVM_ENTRY( 5066 (void **) vm, penv, args); 5067#endif /* USDT2 */ 5068 5069 jint result = JNI_ERR; 5070 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result); 5071 5072 // We're about to use Atomic::xchg for synchronization. Some Zero 5073 // platforms use the GCC builtin __sync_lock_test_and_set for this, 5074 // but __sync_lock_test_and_set is not guaranteed to do what we want 5075 // on all architectures. So we check it works before relying on it. 5076#if defined(ZERO) && defined(ASSERT) 5077 { 5078 jint a = 0xcafebabe; 5079 jint b = Atomic::xchg(0xdeadbeef, &a); 5080 void *c = &a; 5081 void *d = Atomic::xchg_ptr(&b, &c); 5082 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works"); 5083 assert(c == &b && d == &a, "Atomic::xchg_ptr() works"); 5084 } 5085#endif // ZERO && ASSERT 5086 5087 // At the moment it's only possible to have one Java VM, 5088 // since some of the runtime state is in global variables. 5089 5090 // We cannot use our mutex locks here, since they only work on 5091 // Threads. We do an atomic compare and exchange to ensure only 5092 // one thread can call this method at a time 5093 5094 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms 5095 // the add/dec implementations are dependent on whether we are running 5096 // on a multiprocessor, and at this stage of initialization the os::is_MP 5097 // function used to determine this will always return false. Atomic::xchg 5098 // does not have this problem. 5099 if (Atomic::xchg(1, &vm_created) == 1) { 5100 return JNI_ERR; // already created, or create attempt in progress 5101 } 5102 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) { 5103 return JNI_ERR; // someone tried and failed and retry not allowed. 5104 } 5105 5106 assert(vm_created == 1, "vm_created is true during the creation"); 5107 5108 /** 5109 * Certain errors during initialization are recoverable and do not 5110 * prevent this method from being called again at a later time 5111 * (perhaps with different arguments). However, at a certain 5112 * point during initialization if an error occurs we cannot allow 5113 * this function to be called again (or it will crash). In those 5114 * situations, the 'canTryAgain' flag is set to false, which atomically 5115 * sets safe_to_recreate_vm to 1, such that any new call to 5116 * JNI_CreateJavaVM will immediately fail using the above logic. 5117 */ 5118 bool can_try_again = true; 5119 5120 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again); 5121 if (result == JNI_OK) { 5122 JavaThread *thread = JavaThread::current(); 5123 /* thread is thread_in_vm here */ 5124 *vm = (JavaVM *)(&main_vm); 5125 *(JNIEnv**)penv = thread->jni_environment(); 5126 5127 // Tracks the time application was running before GC 5128 RuntimeService::record_application_start(); 5129 5130 // Notify JVMTI 5131 if (JvmtiExport::should_post_thread_life()) { 5132 JvmtiExport::post_thread_start(thread); 5133 } 5134 5135 EventThreadStart event; 5136 if (event.should_commit()) { 5137 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5138 event.commit(); 5139 } 5140 5141 // Check if we should compile all classes on bootclasspath 5142 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();) 5143 NOT_PRODUCT(if (ReplayCompiles) ciReplay::replay(thread);) 5144 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. 5145 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5146 } else { 5147 if (can_try_again) { 5148 // reset safe_to_recreate_vm to 1 so that retrial would be possible 5149 safe_to_recreate_vm = 1; 5150 } 5151 5152 // Creation failed. We must reset vm_created 5153 *vm = 0; 5154 *(JNIEnv**)penv = 0; 5155 // reset vm_created last to avoid race condition. Use OrderAccess to 5156 // control both compiler and architectural-based reordering. 5157 OrderAccess::release_store(&vm_created, 0); 5158 } 5159 5160 NOT_PRODUCT(test_error_handler(ErrorHandlerTest)); 5161 NOT_PRODUCT(execute_internal_vm_tests()); 5162 return result; 5163} 5164 5165#ifndef USDT2 5166HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5167 JavaVM**, jsize, jsize*); 5168HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); 5169#endif /* !USDT2 */ 5170 5171_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { 5172 // See bug 4367188, the wrapper can sometimes cause VM crashes 5173 // JNIWrapper("GetCreatedJavaVMs"); 5174#ifndef USDT2 5175 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ 5176 vm_buf, bufLen, numVMs); 5177#else /* USDT2 */ 5178 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY( 5179 (void **) vm_buf, bufLen, (uintptr_t *) numVMs); 5180#endif /* USDT2 */ 5181 if (vm_created) { 5182 if (numVMs != NULL) *numVMs = 1; 5183 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); 5184 } else { 5185 if (numVMs != NULL) *numVMs = 0; 5186 } 5187#ifndef USDT2 5188 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); 5189#else /* USDT2 */ 5190 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN( 5191 JNI_OK); 5192#endif /* USDT2 */ 5193 return JNI_OK; 5194} 5195 5196extern "C" { 5197 5198#ifndef USDT2 5199DT_RETURN_MARK_DECL(DestroyJavaVM, jint); 5200#else /* USDT2 */ 5201DT_RETURN_MARK_DECL(DestroyJavaVM, jint 5202 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref)); 5203#endif /* USDT2 */ 5204 5205jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { 5206#ifndef USDT2 5207 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); 5208#else /* USDT2 */ 5209 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY( 5210 vm); 5211#endif /* USDT2 */ 5212 jint res = JNI_ERR; 5213 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); 5214 5215 if (!vm_created) { 5216 res = JNI_ERR; 5217 return res; 5218 } 5219 5220 JNIWrapper("DestroyJavaVM"); 5221 JNIEnv *env; 5222 JavaVMAttachArgs destroyargs; 5223 destroyargs.version = CurrentVersion; 5224 destroyargs.name = (char *)"DestroyJavaVM"; 5225 destroyargs.group = NULL; 5226 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); 5227 if (res != JNI_OK) { 5228 return res; 5229 } 5230 5231 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. 5232 JavaThread* thread = JavaThread::current(); 5233 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5234 if (Threads::destroy_vm()) { 5235 // Should not change thread state, VM is gone 5236 vm_created = false; 5237 res = JNI_OK; 5238 return res; 5239 } else { 5240 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5241 res = JNI_ERR; 5242 return res; 5243 } 5244} 5245 5246 5247static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { 5248 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; 5249 5250 // Check below commented out from JDK1.2fcs as well 5251 /* 5252 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { 5253 return JNI_EVERSION; 5254 } 5255 */ 5256 5257 Thread* t = ThreadLocalStorage::get_thread_slow(); 5258 if (t != NULL) { 5259 // If the thread has been attached this operation is a no-op 5260 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); 5261 return JNI_OK; 5262 } 5263 5264 // Create a thread and mark it as attaching so it will be skipped by the 5265 // ThreadsListEnumerator - see CR 6404306 5266 JavaThread* thread = new JavaThread(true); 5267 5268 // Set correct safepoint info. The thread is going to call into Java when 5269 // initializing the Java level thread object. Hence, the correct state must 5270 // be set in order for the Safepoint code to deal with it correctly. 5271 thread->set_thread_state(_thread_in_vm); 5272 // Must do this before initialize_thread_local_storage 5273 thread->record_stack_base_and_size(); 5274 5275 thread->initialize_thread_local_storage(); 5276 5277 if (!os::create_attached_thread(thread)) { 5278 delete thread; 5279 return JNI_ERR; 5280 } 5281 // Enable stack overflow checks 5282 thread->create_stack_guard_pages(); 5283 5284 thread->initialize_tlab(); 5285 5286 thread->cache_global_variables(); 5287 5288 // Crucial that we do not have a safepoint check for this thread, since it has 5289 // not been added to the Thread list yet. 5290 { Threads_lock->lock_without_safepoint_check(); 5291 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to 5292 // avoid this thread trying to do a GC before it is added to the thread-list 5293 thread->set_active_handles(JNIHandleBlock::allocate_block()); 5294 Threads::add(thread, daemon); 5295 Threads_lock->unlock(); 5296 } 5297 // Create thread group and name info from attach arguments 5298 oop group = NULL; 5299 char* thread_name = NULL; 5300 if (args != NULL && Threads::is_supported_jni_version(args->version)) { 5301 group = JNIHandles::resolve(args->group); 5302 thread_name = args->name; // may be NULL 5303 } 5304 if (group == NULL) group = Universe::main_thread_group(); 5305 5306 // Create Java level thread object and attach it to this thread 5307 bool attach_failed = false; 5308 { 5309 EXCEPTION_MARK; 5310 HandleMark hm(THREAD); 5311 Handle thread_group(THREAD, group); 5312 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); 5313 if (HAS_PENDING_EXCEPTION) { 5314 CLEAR_PENDING_EXCEPTION; 5315 // cleanup outside the handle mark. 5316 attach_failed = true; 5317 } 5318 } 5319 5320 if (attach_failed) { 5321 // Added missing cleanup 5322 thread->cleanup_failed_attach_current_thread(); 5323 return JNI_ERR; 5324 } 5325 5326 // mark the thread as no longer attaching 5327 // this uses a fence to push the change through so we don't have 5328 // to regrab the threads_lock 5329 thread->set_done_attaching_via_jni(); 5330 5331 // Set java thread status. 5332 java_lang_Thread::set_thread_status(thread->threadObj(), 5333 java_lang_Thread::RUNNABLE); 5334 5335 // Notify the debugger 5336 if (JvmtiExport::should_post_thread_life()) { 5337 JvmtiExport::post_thread_start(thread); 5338 } 5339 5340 EventThreadStart event; 5341 if (event.should_commit()) { 5342 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 5343 event.commit(); 5344 } 5345 5346 *(JNIEnv**)penv = thread->jni_environment(); 5347 5348 // Now leaving the VM, so change thread_state. This is normally automatically taken care 5349 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by 5350 // using ThreadStateTransition::transition, we do a callback to the safepoint code if 5351 // needed. 5352 5353 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); 5354 5355 // Perform any platform dependent FPU setup 5356 os::setup_fpu(); 5357 5358 return JNI_OK; 5359} 5360 5361 5362jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { 5363#ifndef USDT2 5364 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); 5365#else /* USDT2 */ 5366 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY( 5367 vm, penv, _args); 5368#endif /* USDT2 */ 5369 if (!vm_created) { 5370#ifndef USDT2 5371 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); 5372#else /* USDT2 */ 5373 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5374 (uint32_t) JNI_ERR); 5375#endif /* USDT2 */ 5376 return JNI_ERR; 5377 } 5378 5379 JNIWrapper("AttachCurrentThread"); 5380 jint ret = attach_current_thread(vm, penv, _args, false); 5381#ifndef USDT2 5382 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); 5383#else /* USDT2 */ 5384 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN( 5385 ret); 5386#endif /* USDT2 */ 5387 return ret; 5388} 5389 5390 5391jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { 5392#ifndef USDT2 5393 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); 5394#else /* USDT2 */ 5395 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY( 5396 vm); 5397#endif /* USDT2 */ 5398 VM_Exit::block_if_vm_exited(); 5399 5400 JNIWrapper("DetachCurrentThread"); 5401 5402 // If the thread has been deattacted the operations is a no-op 5403 if (ThreadLocalStorage::thread() == NULL) { 5404#ifndef USDT2 5405 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5406#else /* USDT2 */ 5407 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5408 JNI_OK); 5409#endif /* USDT2 */ 5410 return JNI_OK; 5411 } 5412 5413 JavaThread* thread = JavaThread::current(); 5414 if (thread->has_last_Java_frame()) { 5415#ifndef USDT2 5416 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); 5417#else /* USDT2 */ 5418 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5419 (uint32_t) JNI_ERR); 5420#endif /* USDT2 */ 5421 // Can't detach a thread that's running java, that can't work. 5422 return JNI_ERR; 5423 } 5424 5425 // Safepoint support. Have to do call-back to safepoint code, if in the 5426 // middel of a safepoint operation 5427 ThreadStateTransition::transition_from_native(thread, _thread_in_vm); 5428 5429 // XXX: Note that JavaThread::exit() call below removes the guards on the 5430 // stack pages set up via enable_stack_{red,yellow}_zone() calls 5431 // above in jni_AttachCurrentThread. Unfortunately, while the setting 5432 // of the guards is visible in jni_AttachCurrentThread above, 5433 // the removal of the guards is buried below in JavaThread::exit() 5434 // here. The abstraction should be more symmetrically either exposed 5435 // or hidden (e.g. it could probably be hidden in the same 5436 // (platform-dependent) methods where we do alternate stack 5437 // maintenance work?) 5438 thread->exit(false, JavaThread::jni_detach); 5439 delete thread; 5440 5441#ifndef USDT2 5442 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); 5443#else /* USDT2 */ 5444 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN( 5445 JNI_OK); 5446#endif /* USDT2 */ 5447 return JNI_OK; 5448} 5449 5450#ifndef USDT2 5451DT_RETURN_MARK_DECL(GetEnv, jint); 5452#else /* USDT2 */ 5453DT_RETURN_MARK_DECL(GetEnv, jint 5454 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref)); 5455#endif /* USDT2 */ 5456 5457jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { 5458#ifndef USDT2 5459 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); 5460#else /* USDT2 */ 5461 HOTSPOT_JNI_GETENV_ENTRY( 5462 vm, penv, version); 5463#endif /* USDT2 */ 5464 jint ret = JNI_ERR; 5465 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); 5466 5467 if (!vm_created) { 5468 *penv = NULL; 5469 ret = JNI_EDETACHED; 5470 return ret; 5471 } 5472 5473 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) { 5474 return ret; 5475 } 5476 5477#ifndef JVMPI_VERSION_1 5478// need these in order to be polite about older agents 5479#define JVMPI_VERSION_1 ((jint)0x10000001) 5480#define JVMPI_VERSION_1_1 ((jint)0x10000002) 5481#define JVMPI_VERSION_1_2 ((jint)0x10000003) 5482#endif // !JVMPI_VERSION_1 5483 5484 Thread* thread = ThreadLocalStorage::thread(); 5485 if (thread != NULL && thread->is_Java_thread()) { 5486 if (Threads::is_supported_jni_version_including_1_1(version)) { 5487 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); 5488 ret = JNI_OK; 5489 return ret; 5490 5491 } else if (version == JVMPI_VERSION_1 || 5492 version == JVMPI_VERSION_1_1 || 5493 version == JVMPI_VERSION_1_2) { 5494 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); 5495 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5496 ret = JNI_EVERSION; 5497 return ret; 5498 } else if (JvmtiExport::is_jvmdi_version(version)) { 5499 tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); 5500 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); 5501 ret = JNI_EVERSION; 5502 return ret; 5503 } else { 5504 *penv = NULL; 5505 ret = JNI_EVERSION; 5506 return ret; 5507 } 5508 } else { 5509 *penv = NULL; 5510 ret = JNI_EDETACHED; 5511 return ret; 5512 } 5513} 5514 5515 5516jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { 5517#ifndef USDT2 5518 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); 5519#else /* USDT2 */ 5520 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY( 5521 vm, penv, _args); 5522#endif /* USDT2 */ 5523 if (!vm_created) { 5524#ifndef USDT2 5525 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); 5526#else /* USDT2 */ 5527 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5528 (uint32_t) JNI_ERR); 5529#endif /* USDT2 */ 5530 return JNI_ERR; 5531 } 5532 5533 JNIWrapper("AttachCurrentThreadAsDaemon"); 5534 jint ret = attach_current_thread(vm, penv, _args, true); 5535#ifndef USDT2 5536 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); 5537#else /* USDT2 */ 5538 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN( 5539 ret); 5540#endif /* USDT2 */ 5541 return ret; 5542} 5543 5544 5545} // End extern "C" 5546 5547const struct JNIInvokeInterface_ jni_InvokeInterface = { 5548 NULL, 5549 NULL, 5550 NULL, 5551 5552 jni_DestroyJavaVM, 5553 jni_AttachCurrentThread, 5554 jni_DetachCurrentThread, 5555 jni_GetEnv, 5556 jni_AttachCurrentThreadAsDaemon 5557}; 5558