1 /* 2 * Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #ifndef _JAVASOFT_JVM_H_ 27 #define _JAVASOFT_JVM_H_ 28 29 #include <sys/stat.h> 30 31 #include "jni.h" 32 #include "jvm_md.h" 33 #include "jvm_constants.h" 34 #include "jvm_io.h" 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 /* 41 * This file contains additional functions exported from the VM. 42 * These functions are complementary to the standard JNI support. 43 * There are three parts to this file: 44 * 45 * First, this file contains the VM-related functions needed by native 46 * libraries in the standard Java API. For example, the java.lang.Object 47 * class needs VM-level functions that wait for and notify monitors. 48 * 49 * Second, (included from jvm_constants.h) constant definitions 50 * needed by the byte code verifier and class file format checker. 51 * These definitions allow the verifier and format checker to be written 52 * in a VM-independent way. 53 * 54 * Third, this file contains various I/O and network operations needed 55 * by the standard Java I/O and network APIs. A part of these APIs, 56 * namely the jio_xxxprintf functions, are included from jvm_io.h. 57 */ 58 59 60 /************************************************************************* 61 PART 1: Functions for Native Libraries 62 ************************************************************************/ 63 /* 64 * java.lang.Object 65 */ 66 JNIEXPORT jint JNICALL 67 JVM_IHashCode(JNIEnv *env, jobject obj); 68 69 JNIEXPORT void JNICALL 70 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms); 71 72 JNIEXPORT void JNICALL 73 JVM_MonitorNotify(JNIEnv *env, jobject obj); 74 75 JNIEXPORT void JNICALL 76 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj); 77 78 JNIEXPORT jobject JNICALL 79 JVM_Clone(JNIEnv *env, jobject obj); 80 81 /* 82 * java.lang.String 83 */ 84 JNIEXPORT jstring JNICALL 85 JVM_InternString(JNIEnv *env, jstring str); 86 87 /* 88 * java.lang.System 89 */ 90 JNIEXPORT jlong JNICALL 91 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored); 92 93 JNIEXPORT jlong JNICALL 94 JVM_NanoTime(JNIEnv *env, jclass ignored); 95 96 JNIEXPORT jlong JNICALL 97 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs); 98 99 JNIEXPORT void JNICALL 100 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, 101 jobject dst, jint dst_pos, jint length); 102 103 /* 104 * Return an array of all properties as alternating name and value pairs. 105 */ 106 JNIEXPORT jobjectArray JNICALL 107 JVM_GetProperties(JNIEnv *env); 108 109 /* 110 * java.lang.Runtime 111 */ 112 JNIEXPORT void JNICALL 113 JVM_BeforeHalt(); 114 115 JNIEXPORT void JNICALL 116 JVM_Halt(jint code); 117 118 JNIEXPORT void JNICALL 119 JVM_GC(void); 120 121 /* Returns the number of real-time milliseconds that have elapsed since the 122 * least-recently-inspected heap object was last inspected by the garbage 123 * collector. 124 * 125 * For simple stop-the-world collectors this value is just the time 126 * since the most recent collection. For generational collectors it is the 127 * time since the oldest generation was most recently collected. Other 128 * collectors are free to return a pessimistic estimate of the elapsed time, or 129 * simply the time since the last full collection was performed. 130 * 131 * Note that in the presence of reference objects, a given object that is no 132 * longer strongly reachable may have to be inspected multiple times before it 133 * can be reclaimed. 134 */ 135 JNIEXPORT jlong JNICALL 136 JVM_MaxObjectInspectionAge(void); 137 138 JNIEXPORT jlong JNICALL 139 JVM_TotalMemory(void); 140 141 JNIEXPORT jlong JNICALL 142 JVM_FreeMemory(void); 143 144 JNIEXPORT jlong JNICALL 145 JVM_MaxMemory(void); 146 147 JNIEXPORT jint JNICALL 148 JVM_ActiveProcessorCount(void); 149 150 JNIEXPORT jboolean JNICALL 151 JVM_IsUseContainerSupport(void); 152 153 JNIEXPORT void * JNICALL 154 JVM_LoadZipLibrary(); 155 156 JNIEXPORT void * JNICALL 157 JVM_LoadLibrary(const char *name, jboolean throwException); 158 159 JNIEXPORT void JNICALL 160 JVM_UnloadLibrary(void * handle); 161 162 JNIEXPORT void * JNICALL 163 JVM_FindLibraryEntry(void *handle, const char *name); 164 165 JNIEXPORT jboolean JNICALL 166 JVM_IsSupportedJNIVersion(jint version); 167 168 JNIEXPORT jobjectArray JNICALL 169 JVM_GetVmArguments(JNIEnv *env); 170 171 JNIEXPORT jboolean JNICALL 172 JVM_IsPreviewEnabled(void); 173 174 JNIEXPORT jboolean JNICALL 175 JVM_IsValhallaEnabled(void); 176 177 JNIEXPORT jboolean JNICALL 178 JVM_IsContinuationsSupported(void); 179 180 JNIEXPORT jboolean JNICALL 181 JVM_IsForeignLinkerSupported(void); 182 183 JNIEXPORT void JNICALL 184 JVM_InitializeFromArchive(JNIEnv* env, jclass cls); 185 186 JNIEXPORT void JNICALL 187 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller, 188 jstring interfaceMethodName, 189 jobject factoryType, 190 jobject interfaceMethodType, 191 jobject implementationMember, 192 jobject dynamicMethodType, 193 jclass lambdaProxyClass); 194 195 JNIEXPORT jclass JNICALL 196 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller, 197 jstring interfaceMethodName, 198 jobject factoryType, 199 jobject interfaceMethodType, 200 jobject implementationMember, 201 jobject dynamicMethodType); 202 203 JNIEXPORT jboolean JNICALL 204 JVM_IsCDSDumpingEnabled(JNIEnv* env); 205 206 JNIEXPORT jboolean JNICALL 207 JVM_IsSharingEnabled(JNIEnv* env); 208 209 JNIEXPORT jboolean JNICALL 210 JVM_IsDumpingClassList(JNIEnv* env); 211 212 JNIEXPORT jlong JNICALL 213 JVM_GetRandomSeedForDumping(); 214 215 JNIEXPORT void JNICALL 216 JVM_LogLambdaFormInvoker(JNIEnv* env, jstring line); 217 218 JNIEXPORT void JNICALL 219 JVM_DumpClassListToFile(JNIEnv* env, jstring fileName); 220 221 JNIEXPORT void JNICALL 222 JVM_DumpDynamicArchive(JNIEnv* env, jstring archiveName); 223 224 /* 225 * java.lang.Throwable 226 */ 227 JNIEXPORT void JNICALL 228 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 229 230 /* 231 * java.lang.StackTraceElement 232 */ 233 JNIEXPORT void JNICALL 234 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth); 235 236 JNIEXPORT void JNICALL 237 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo); 238 239 /* 240 * java.lang.NullPointerException 241 */ 242 243 JNIEXPORT jstring JNICALL 244 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable); 245 246 /* 247 * java.lang.StackWalker 248 */ 249 enum { 250 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2, 251 JVM_STACKWALK_GET_CALLER_CLASS = 0x04, 252 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 253 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 254 }; 255 256 JNIEXPORT jobject JNICALL 257 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode, 258 jint skip_frames, jobject contScope, jobject cont, 259 jint frame_count, jint start_index, jobjectArray frames); 260 261 JNIEXPORT jint JNICALL 262 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor, 263 jint frame_count, jint start_index, 264 jobjectArray frames); 265 266 JNIEXPORT void JNICALL 267 JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont); 268 269 /* 270 * java.lang.Thread 271 */ 272 JNIEXPORT void JNICALL 273 JVM_StartThread(JNIEnv *env, jobject thread); 274 275 JNIEXPORT void JNICALL 276 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 277 278 JNIEXPORT void JNICALL 279 JVM_Yield(JNIEnv *env, jclass threadClass); 280 281 JNIEXPORT void JNICALL 282 JVM_SleepNanos(JNIEnv *env, jclass threadClass, jlong nanos); 283 284 JNIEXPORT jobject JNICALL 285 JVM_CurrentCarrierThread(JNIEnv *env, jclass threadClass); 286 287 JNIEXPORT jobject JNICALL 288 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 289 290 JNIEXPORT void JNICALL 291 JVM_SetCurrentThread(JNIEnv *env, jobject thisThread, jobject theThread); 292 293 JNIEXPORT void JNICALL 294 JVM_Interrupt(JNIEnv *env, jobject thread); 295 296 JNIEXPORT jboolean JNICALL 297 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 298 299 JNIEXPORT jobject JNICALL 300 JVM_GetStackTrace(JNIEnv *env, jobject thread); 301 302 JNIEXPORT void JNICALL 303 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 304 305 JNIEXPORT jobjectArray JNICALL 306 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 307 308 JNIEXPORT void JNICALL 309 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 310 311 /* getStackTrace() and getAllStackTraces() method */ 312 JNIEXPORT jobjectArray JNICALL 313 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 314 315 JNIEXPORT jobject JNICALL 316 JVM_ScopedValueCache(JNIEnv *env, jclass threadClass); 317 318 JNIEXPORT void JNICALL 319 JVM_SetScopedValueCache(JNIEnv *env, jclass threadClass, jobject theCache); 320 321 JNIEXPORT jobject JNICALL 322 JVM_FindScopedValueBindings(JNIEnv *env, jclass threadClass); 323 324 JNIEXPORT jlong JNICALL 325 JVM_GetNextThreadIdOffset(JNIEnv *env, jclass threadClass); 326 327 /* 328 * jdk.internal.vm.Continuation 329 */ 330 JNIEXPORT void JNICALL 331 JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls); 332 333 /* 334 * java.lang.SecurityManager 335 */ 336 JNIEXPORT jobjectArray JNICALL 337 JVM_GetClassContext(JNIEnv *env); 338 339 /* 340 * java.lang.Package 341 */ 342 JNIEXPORT jstring JNICALL 343 JVM_GetSystemPackage(JNIEnv *env, jstring name); 344 345 JNIEXPORT jobjectArray JNICALL 346 JVM_GetSystemPackages(JNIEnv *env); 347 348 /* 349 * java.lang.ref.Reference 350 */ 351 JNIEXPORT jobject JNICALL 352 JVM_GetAndClearReferencePendingList(JNIEnv *env); 353 354 JNIEXPORT jboolean JNICALL 355 JVM_HasReferencePendingList(JNIEnv *env); 356 357 JNIEXPORT void JNICALL 358 JVM_WaitForReferencePendingList(JNIEnv *env); 359 360 JNIEXPORT jboolean JNICALL 361 JVM_ReferenceRefersTo(JNIEnv *env, jobject ref, jobject o); 362 363 JNIEXPORT void JNICALL 364 JVM_ReferenceClear(JNIEnv *env, jobject ref); 365 366 /* 367 * java.lang.ref.PhantomReference 368 */ 369 JNIEXPORT jboolean JNICALL 370 JVM_PhantomReferenceRefersTo(JNIEnv *env, jobject ref, jobject o); 371 372 /* 373 * java.io.ObjectInputStream 374 */ 375 JNIEXPORT jobject JNICALL 376 JVM_LatestUserDefinedLoader(JNIEnv *env); 377 378 /* 379 * java.lang.reflect.Array 380 */ 381 JNIEXPORT jint JNICALL 382 JVM_GetArrayLength(JNIEnv *env, jobject arr); 383 384 JNIEXPORT jobject JNICALL 385 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 386 387 JNIEXPORT jvalue JNICALL 388 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 389 390 JNIEXPORT void JNICALL 391 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 392 393 JNIEXPORT void JNICALL 394 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 395 unsigned char vCode); 396 397 JNIEXPORT jobject JNICALL 398 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 399 400 JNIEXPORT jobject JNICALL 401 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 402 403 404 /* 405 * Returns the immediate caller class of the native method invoking 406 * JVM_GetCallerClass. The Method.invoke and other frames due to 407 * reflection machinery are skipped. 408 * 409 * The caller is expected to be marked with 410 * jdk.internal.reflect.CallerSensitive. The JVM will throw an 411 * error if it is not marked properly. 412 */ 413 JNIEXPORT jclass JNICALL 414 JVM_GetCallerClass(JNIEnv *env); 415 416 417 /* 418 * Find primitive classes 419 * utf: class name 420 */ 421 JNIEXPORT jclass JNICALL 422 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 423 424 425 /* 426 * Find a class from a boot class loader. Returns nullptr if class not found. 427 */ 428 JNIEXPORT jclass JNICALL 429 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 430 431 /* 432 * Find a class from a given class loader. Throws ClassNotFoundException. 433 * name: name of class 434 * init: whether initialization is done 435 * loader: class loader to look up the class. This may not be the same as the caller's 436 * class loader. 437 * caller: initiating class. The initiating class may be null when a security 438 * manager is not installed. 439 */ 440 JNIEXPORT jclass JNICALL 441 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 442 jobject loader, jclass caller); 443 444 /* 445 * Find a class from a given class. 446 */ 447 JNIEXPORT jclass JNICALL 448 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 449 jclass from); 450 451 /* Find a loaded class cached by the VM */ 452 JNIEXPORT jclass JNICALL 453 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 454 455 /* Define a class */ 456 JNIEXPORT jclass JNICALL 457 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 458 jsize len, jobject pd); 459 460 /* Define a class with a source (added in JDK1.5) */ 461 JNIEXPORT jclass JNICALL 462 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 463 const jbyte *buf, jsize len, jobject pd, 464 const char *source); 465 466 /* 467 * Define a class with the specified lookup class. 468 * lookup: Lookup class 469 * name: the name of the class 470 * buf: class bytes 471 * len: length of class bytes 472 * pd: protection domain 473 * init: initialize the class 474 * flags: properties of the class 475 * classData: private static pre-initialized field; may be null 476 */ 477 JNIEXPORT jclass JNICALL 478 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf, 479 jsize len, jobject pd, jboolean init, int flags, jobject classData); 480 481 /* 482 * Module support functions 483 */ 484 485 /* 486 * Define a module with the specified packages and bind the module to the 487 * given class loader. 488 * module: module to define 489 * is_open: specifies if module is open (currently ignored) 490 * version: the module version 491 * location: the module location 492 * packages: array of packages in the module 493 */ 494 JNIEXPORT void JNICALL 495 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version, 496 jstring location, jobjectArray packages); 497 498 /* 499 * Set the boot loader's unnamed module. 500 * module: boot loader's unnamed module 501 */ 502 JNIEXPORT void JNICALL 503 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module); 504 505 /* 506 * Do a qualified export of a package. 507 * from_module: module containing the package to export 508 * package: name of the package to export 509 * to_module: module to export the package to 510 */ 511 JNIEXPORT void JNICALL 512 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module); 513 514 /* 515 * Do an export of a package to all unnamed modules. 516 * from_module: module containing the package to export 517 * package: name of the package to export to all unnamed modules 518 */ 519 JNIEXPORT void JNICALL 520 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package); 521 522 /* 523 * Do an unqualified export of a package. 524 * from_module: module containing the package to export 525 * package: name of the package to export 526 */ 527 JNIEXPORT void JNICALL 528 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package); 529 530 /* 531 * Add a module to the list of modules that a given module can read. 532 * from_module: module requesting read access 533 * source_module: module that from_module wants to read 534 */ 535 JNIEXPORT void JNICALL 536 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module); 537 538 /* 539 * Define all modules that have been stored in the CDS archived heap. 540 * platform_loader: the built-in platform class loader 541 * system_loader: the built-in system class loader 542 */ 543 JNIEXPORT void JNICALL 544 JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader); 545 546 /* 547 * Reflection support functions 548 */ 549 550 JNIEXPORT jstring JNICALL 551 JVM_InitClassName(JNIEnv *env, jclass cls); 552 553 JNIEXPORT jobjectArray JNICALL 554 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 555 556 JNIEXPORT jboolean JNICALL 557 JVM_IsInterface(JNIEnv *env, jclass cls); 558 559 JNIEXPORT jobjectArray JNICALL 560 JVM_GetClassSigners(JNIEnv *env, jclass cls); 561 562 JNIEXPORT void JNICALL 563 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 564 565 JNIEXPORT jobject JNICALL 566 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 567 568 JNIEXPORT jboolean JNICALL 569 JVM_IsArrayClass(JNIEnv *env, jclass cls); 570 571 JNIEXPORT jboolean JNICALL 572 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 573 574 JNIEXPORT jboolean JNICALL 575 JVM_IsHiddenClass(JNIEnv *env, jclass cls); 576 577 JNIEXPORT jboolean JNICALL 578 JVM_IsIdentityClass(JNIEnv *env, jclass cls); 579 580 JNIEXPORT jint JNICALL 581 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 582 583 JNIEXPORT jobjectArray JNICALL 584 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 585 586 JNIEXPORT jclass JNICALL 587 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 588 589 JNIEXPORT jstring JNICALL 590 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 591 592 /* Generics support (JDK 1.5) */ 593 JNIEXPORT jstring JNICALL 594 JVM_GetClassSignature(JNIEnv *env, jclass cls); 595 596 /* Annotations support (JDK 1.5) */ 597 JNIEXPORT jbyteArray JNICALL 598 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 599 600 /* Type use annotations support (JDK 1.8) */ 601 602 JNIEXPORT jbyteArray JNICALL 603 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 604 605 JNIEXPORT jbyteArray JNICALL 606 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 607 608 JNIEXPORT jbyteArray JNICALL 609 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 610 611 /* 612 * New (JDK 1.4) reflection implementation 613 */ 614 615 JNIEXPORT jobjectArray JNICALL 616 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 617 618 JNIEXPORT jobjectArray JNICALL 619 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 620 621 JNIEXPORT jobjectArray JNICALL 622 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 623 624 625 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 626 This returns the access flags for the class as specified in the 627 class file rather than searching the InnerClasses attribute (if 628 present) to find the source-level access flags. Only the values of 629 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 630 valid. */ 631 JNIEXPORT jint JNICALL 632 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 633 634 /* Nestmates - since JDK 11 */ 635 636 JNIEXPORT jboolean JNICALL 637 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member); 638 639 JNIEXPORT jclass JNICALL 640 JVM_GetNestHost(JNIEnv *env, jclass current); 641 642 JNIEXPORT jobjectArray JNICALL 643 JVM_GetNestMembers(JNIEnv *env, jclass current); 644 645 /* Records - since JDK 16 */ 646 647 JNIEXPORT jboolean JNICALL 648 JVM_IsRecord(JNIEnv *env, jclass cls); 649 650 JNIEXPORT jobjectArray JNICALL 651 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass); 652 653 /* Sealed classes - since JDK 17 */ 654 655 JNIEXPORT jobjectArray JNICALL 656 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current); 657 658 /* The following two reflection routines are still needed due to startup time issues */ 659 /* 660 * java.lang.reflect.Method 661 */ 662 JNIEXPORT jobject JNICALL 663 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 664 665 /* 666 * java.lang.reflect.Constructor 667 */ 668 JNIEXPORT jobject JNICALL 669 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 670 671 /* 672 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 673 */ 674 675 JNIEXPORT jobject JNICALL 676 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 677 678 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 679 (JNIEnv *env, jobject unused, jobject jcpool); 680 681 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 682 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 683 684 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 685 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 686 687 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 688 (JNIEnv *env, jobject obj, jobject unused, jint index); 689 690 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 691 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 692 693 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 694 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 695 696 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 697 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 698 699 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 700 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 701 702 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 703 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 704 705 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 706 (JNIEnv *env, jobject obj, jobject unused, jint index); 707 708 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 709 (JNIEnv *env, jobject obj, jobject unused, jint index); 710 711 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 712 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 713 714 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 715 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 716 717 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 718 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 719 720 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 721 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 722 723 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 724 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 725 726 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 727 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 728 729 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 730 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 731 732 /* 733 * Parameter reflection 734 */ 735 736 JNIEXPORT jobjectArray JNICALL 737 JVM_GetMethodParameters(JNIEnv *env, jobject method); 738 739 /* 740 * java.security.* 741 */ 742 743 JNIEXPORT jobject JNICALL 744 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 745 746 /* 747 * Ensure that code doing a stackwalk and using javaVFrame::locals() to 748 * get the value will see a materialized value and not a scalar-replaced 749 * null value. 750 */ 751 #define JVM_EnsureMaterializedForStackWalk(env, value) \ 752 do {} while(0) // Nothing to do. The fact that the value escaped 753 // through a native method is enough. 754 JNIEXPORT void JNICALL 755 JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value); 756 757 JNIEXPORT jobject JNICALL 758 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 759 760 /* 761 * Signal support, used to implement the shutdown sequence. Every VM must 762 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 763 * (^C) and the latter for external termination (kill, system shutdown, etc.). 764 * Other platform-dependent signal values may also be supported. 765 */ 766 767 JNIEXPORT void * JNICALL 768 JVM_RegisterSignal(jint sig, void *handler); 769 770 JNIEXPORT jboolean JNICALL 771 JVM_RaiseSignal(jint sig); 772 773 JNIEXPORT jint JNICALL 774 JVM_FindSignal(const char *name); 775 776 /* 777 * Retrieve the assertion directives for the specified class. 778 */ 779 JNIEXPORT jboolean JNICALL 780 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 781 782 /* 783 * Retrieve the assertion directives from the VM. 784 */ 785 JNIEXPORT jobject JNICALL 786 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 787 788 /* 789 * java.util.concurrent.atomic.AtomicLong 790 */ 791 JNIEXPORT jboolean JNICALL 792 JVM_SupportsCX8(void); 793 794 /* 795 * java.lang.ref.Finalizer 796 */ 797 JNIEXPORT void JNICALL 798 JVM_ReportFinalizationComplete(JNIEnv *env, jobject finalizee); 799 800 JNIEXPORT jboolean JNICALL 801 JVM_IsFinalizationEnabled(JNIEnv *env); 802 803 /************************************************************************* 804 PART 2: Support for the Verifier and Class File Format Checker 805 ************************************************************************/ 806 /* 807 * Return the class name in UTF format. The result is valid 808 * until JVM_ReleaseUTf is called. 809 * 810 * The caller must treat the string as a constant and not modify it 811 * in any way. 812 */ 813 JNIEXPORT const char * JNICALL 814 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 815 816 /* 817 * Returns the constant pool types in the buffer provided by "types." 818 */ 819 JNIEXPORT void JNICALL 820 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 821 822 /* 823 * Returns the number of Constant Pool entries. 824 */ 825 JNIEXPORT jint JNICALL 826 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 827 828 /* 829 * Returns the number of *declared* fields or methods. 830 */ 831 JNIEXPORT jint JNICALL 832 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 833 834 JNIEXPORT jint JNICALL 835 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 836 837 /* 838 * Returns the CP indexes of exceptions raised by a given method. 839 * Places the result in the given buffer. 840 * 841 * The method is identified by method_index. 842 */ 843 JNIEXPORT void JNICALL 844 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 845 unsigned short *exceptions); 846 /* 847 * Returns the number of exceptions raised by a given method. 848 * The method is identified by method_index. 849 */ 850 JNIEXPORT jint JNICALL 851 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 852 853 /* 854 * Returns the byte code sequence of a given method. 855 * Places the result in the given buffer. 856 * 857 * The method is identified by method_index. 858 */ 859 JNIEXPORT void JNICALL 860 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 861 unsigned char *code); 862 863 /* 864 * Returns the length of the byte code sequence of a given method. 865 * The method is identified by method_index. 866 */ 867 JNIEXPORT jint JNICALL 868 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 869 870 /* 871 * A structure used to a capture exception table entry in a Java method. 872 */ 873 typedef struct { 874 jint start_pc; 875 jint end_pc; 876 jint handler_pc; 877 jint catchType; 878 } JVM_ExceptionTableEntryType; 879 880 /* 881 * Returns the exception table entry at entry_index of a given method. 882 * Places the result in the given buffer. 883 * 884 * The method is identified by method_index. 885 */ 886 JNIEXPORT void JNICALL 887 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 888 jint entry_index, 889 JVM_ExceptionTableEntryType *entry); 890 891 /* 892 * Returns the length of the exception table of a given method. 893 * The method is identified by method_index. 894 */ 895 JNIEXPORT jint JNICALL 896 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 897 898 /* 899 * Returns the modifiers of a given field. 900 * The field is identified by field_index. 901 */ 902 JNIEXPORT jint JNICALL 903 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 904 905 /* 906 * Returns the modifiers of a given method. 907 * The method is identified by method_index. 908 */ 909 JNIEXPORT jint JNICALL 910 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 911 912 /* 913 * Returns the number of local variables of a given method. 914 * The method is identified by method_index. 915 */ 916 JNIEXPORT jint JNICALL 917 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 918 919 /* 920 * Returns the number of arguments (including this pointer) of a given method. 921 * The method is identified by method_index. 922 */ 923 JNIEXPORT jint JNICALL 924 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 925 926 /* 927 * Returns the maximum amount of stack (in words) used by a given method. 928 * The method is identified by method_index. 929 */ 930 JNIEXPORT jint JNICALL 931 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 932 933 /* 934 * Is a given method a constructor. 935 * The method is identified by method_index. 936 */ 937 JNIEXPORT jboolean JNICALL 938 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 939 940 /* 941 * Is the given method generated by the VM. 942 * The method is identified by method_index. 943 */ 944 JNIEXPORT jboolean JNICALL 945 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 946 947 /* 948 * Returns the name of a given method in UTF format. 949 * The result remains valid until JVM_ReleaseUTF is called. 950 * 951 * The caller must treat the string as a constant and not modify it 952 * in any way. 953 */ 954 JNIEXPORT const char * JNICALL 955 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 956 957 /* 958 * Returns the signature of a given method in UTF format. 959 * The result remains valid until JVM_ReleaseUTF is called. 960 * 961 * The caller must treat the string as a constant and not modify it 962 * in any way. 963 */ 964 JNIEXPORT const char * JNICALL 965 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 966 967 /* 968 * Returns the name of the field referred to at a given constant pool 969 * index. 970 * 971 * The result is in UTF format and remains valid until JVM_ReleaseUTF 972 * is called. 973 * 974 * The caller must treat the string as a constant and not modify it 975 * in any way. 976 */ 977 JNIEXPORT const char * JNICALL 978 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 979 980 /* 981 * Returns the name of the method referred to at a given constant pool 982 * index. 983 * 984 * The result is in UTF format and remains valid until JVM_ReleaseUTF 985 * is called. 986 * 987 * The caller must treat the string as a constant and not modify it 988 * in any way. 989 */ 990 JNIEXPORT const char * JNICALL 991 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 992 993 /* 994 * Returns the signature of the method referred to at a given constant pool 995 * index. 996 * 997 * The result is in UTF format and remains valid until JVM_ReleaseUTF 998 * is called. 999 * 1000 * The caller must treat the string as a constant and not modify it 1001 * in any way. 1002 */ 1003 JNIEXPORT const char * JNICALL 1004 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 1005 1006 /* 1007 * Returns the signature of the field referred to at a given constant pool 1008 * index. 1009 * 1010 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1011 * is called. 1012 * 1013 * The caller must treat the string as a constant and not modify it 1014 * in any way. 1015 */ 1016 JNIEXPORT const char * JNICALL 1017 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 1018 1019 /* 1020 * Returns the class name referred to at a given constant pool index. 1021 * 1022 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1023 * is called. 1024 * 1025 * The caller must treat the string as a constant and not modify it 1026 * in any way. 1027 */ 1028 JNIEXPORT const char * JNICALL 1029 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 1030 1031 /* 1032 * Returns the class name referred to at a given constant pool index. 1033 * 1034 * The constant pool entry must refer to a CONSTANT_Fieldref. 1035 * 1036 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1037 * is called. 1038 * 1039 * The caller must treat the string as a constant and not modify it 1040 * in any way. 1041 */ 1042 JNIEXPORT const char * JNICALL 1043 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 1044 1045 /* 1046 * Returns the class name referred to at a given constant pool index. 1047 * 1048 * The constant pool entry must refer to CONSTANT_Methodref or 1049 * CONSTANT_InterfaceMethodref. 1050 * 1051 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1052 * is called. 1053 * 1054 * The caller must treat the string as a constant and not modify it 1055 * in any way. 1056 */ 1057 JNIEXPORT const char * JNICALL 1058 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1059 1060 /* 1061 * Returns the modifiers of a field in calledClass. The field is 1062 * referred to in class cb at constant pool entry index. 1063 * 1064 * The caller must treat the string as a constant and not modify it 1065 * in any way. 1066 * 1067 * Returns -1 if the field does not exist in calledClass. 1068 */ 1069 JNIEXPORT jint JNICALL 1070 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1071 1072 /* 1073 * Returns the modifiers of a method in calledClass. The method is 1074 * referred to in class cb at constant pool entry index. 1075 * 1076 * Returns -1 if the method does not exist in calledClass. 1077 */ 1078 JNIEXPORT jint JNICALL 1079 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1080 1081 /* 1082 * Releases the UTF string obtained from the VM. 1083 */ 1084 JNIEXPORT void JNICALL 1085 JVM_ReleaseUTF(const char *utf); 1086 1087 /* 1088 * Compare if two classes are in the same package. 1089 */ 1090 JNIEXPORT jboolean JNICALL 1091 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1092 1093 1094 /************************************************************************* 1095 PART 3: I/O and Network Support 1096 ************************************************************************/ 1097 1098 /* 1099 * Convert a pathname into native format. This function does syntactic 1100 * cleanup, such as removing redundant separator characters. It modifies 1101 * the given pathname string in place. 1102 */ 1103 JNIEXPORT char * JNICALL 1104 JVM_NativePath(char *); 1105 1106 JNIEXPORT void * JNICALL 1107 JVM_RawMonitorCreate(void); 1108 1109 JNIEXPORT void JNICALL 1110 JVM_RawMonitorDestroy(void *mon); 1111 1112 JNIEXPORT jint JNICALL 1113 JVM_RawMonitorEnter(void *mon); 1114 1115 JNIEXPORT void JNICALL 1116 JVM_RawMonitorExit(void *mon); 1117 1118 /* 1119 * java.lang.management support 1120 */ 1121 JNIEXPORT void* JNICALL 1122 JVM_GetManagement(jint version); 1123 1124 /* 1125 * com.sun.tools.attach.VirtualMachine support 1126 * 1127 * Initialize the agent properties with the properties maintained in the VM. 1128 */ 1129 JNIEXPORT jobject JNICALL 1130 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1131 1132 JNIEXPORT jstring JNICALL 1133 JVM_GetTemporaryDirectory(JNIEnv *env); 1134 1135 /* Generics reflection support. 1136 * 1137 * Returns information about the given class's EnclosingMethod 1138 * attribute, if present, or null if the class had no enclosing 1139 * method. 1140 * 1141 * If non-null, the returned array contains three elements. Element 0 1142 * is the java.lang.Class of which the enclosing method is a member, 1143 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1144 * method's name and descriptor, respectively. 1145 */ 1146 JNIEXPORT jobjectArray JNICALL 1147 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1148 1149 /* 1150 * Virtual thread support. 1151 */ 1152 JNIEXPORT void JNICALL 1153 JVM_VirtualThreadStart(JNIEnv* env, jobject vthread); 1154 1155 JNIEXPORT void JNICALL 1156 JVM_VirtualThreadEnd(JNIEnv* env, jobject vthread); 1157 1158 JNIEXPORT void JNICALL 1159 JVM_VirtualThreadMount(JNIEnv* env, jobject vthread, jboolean hide); 1160 1161 JNIEXPORT void JNICALL 1162 JVM_VirtualThreadUnmount(JNIEnv* env, jobject vthread, jboolean hide); 1163 1164 JNIEXPORT void JNICALL 1165 JVM_VirtualThreadHideFrames(JNIEnv* env, jobject vthread, jboolean hide); 1166 1167 /* 1168 * Core reflection support. 1169 */ 1170 JNIEXPORT jint JNICALL 1171 JVM_GetClassFileVersion(JNIEnv *env, jclass current); 1172 1173 /* 1174 * Return JNI_TRUE if warnings are printed when agents are dynamically loaded. 1175 */ 1176 JNIEXPORT jboolean JNICALL 1177 JVM_PrintWarningAtDynamicAgentLoad(void); 1178 1179 /* 1180 * This structure is used by the launcher to get the default thread 1181 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1182 * version of 1.1. As it is not supported otherwise, it has been removed 1183 * from jni.h 1184 */ 1185 typedef struct JDK1_1InitArgs { 1186 jint version; 1187 1188 char **properties; 1189 jint checkSource; 1190 jint nativeStackSize; 1191 jint javaStackSize; 1192 jint minHeapSize; 1193 jint maxHeapSize; 1194 jint verifyMode; 1195 char *classpath; 1196 1197 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1198 void (JNICALL *exit)(jint code); 1199 void (JNICALL *abort)(void); 1200 1201 jint enableClassGC; 1202 jint enableVerboseGC; 1203 jint disableAsyncGC; 1204 jint verbose; 1205 jboolean debugging; 1206 jint debugPort; 1207 } JDK1_1InitArgs; 1208 1209 1210 #ifdef __cplusplus 1211 } /* extern "C" */ 1212 1213 #endif /* __cplusplus */ 1214 1215 #endif /* !_JAVASOFT_JVM_H_ */