1 /* 2 * Copyright (c) 1997, 2024, 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 jint JNICALL 204 JVM_GetCDSConfigStatus(); 205 206 JNIEXPORT jlong JNICALL 207 JVM_GetRandomSeedForDumping(); 208 209 JNIEXPORT void JNICALL 210 JVM_LogLambdaFormInvoker(JNIEnv* env, jstring line); 211 212 JNIEXPORT void JNICALL 213 JVM_DumpClassListToFile(JNIEnv* env, jstring fileName); 214 215 JNIEXPORT void JNICALL 216 JVM_DumpDynamicArchive(JNIEnv* env, jstring archiveName); 217 218 /* 219 * java.lang.Throwable 220 */ 221 JNIEXPORT void JNICALL 222 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 223 224 /* 225 * java.lang.StackTraceElement 226 */ 227 JNIEXPORT void JNICALL 228 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth); 229 230 JNIEXPORT void JNICALL 231 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo); 232 233 /* 234 * java.lang.NullPointerException 235 */ 236 237 JNIEXPORT jstring JNICALL 238 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable); 239 240 /* 241 * java.lang.StackWalker 242 */ 243 enum { 244 JVM_STACKWALK_CLASS_INFO_ONLY = 0x2, 245 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 246 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 247 }; 248 249 JNIEXPORT void JNICALL 250 JVM_ExpandStackFrameInfo(JNIEnv *env, jobject obj); 251 252 JNIEXPORT jobject JNICALL 253 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jint mode, 254 jint skip_frames, jobject contScope, jobject cont, 255 jint buffer_size, jint start_index, jobjectArray frames); 256 257 JNIEXPORT jint JNICALL 258 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jint mode, jlong anchor, 259 jint last_batch_count, jint buffer_size, jint start_index, 260 jobjectArray frames); 261 262 JNIEXPORT void JNICALL 263 JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont); 264 265 /* 266 * java.lang.Thread 267 */ 268 JNIEXPORT void JNICALL 269 JVM_StartThread(JNIEnv *env, jobject thread); 270 271 JNIEXPORT void JNICALL 272 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 273 274 JNIEXPORT void JNICALL 275 JVM_Yield(JNIEnv *env, jclass threadClass); 276 277 JNIEXPORT void JNICALL 278 JVM_SleepNanos(JNIEnv *env, jclass threadClass, jlong nanos); 279 280 JNIEXPORT jobject JNICALL 281 JVM_CurrentCarrierThread(JNIEnv *env, jclass threadClass); 282 283 JNIEXPORT jobject JNICALL 284 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 285 286 JNIEXPORT void JNICALL 287 JVM_SetCurrentThread(JNIEnv *env, jobject thisThread, jobject theThread); 288 289 JNIEXPORT void JNICALL 290 JVM_Interrupt(JNIEnv *env, jobject thread); 291 292 JNIEXPORT jboolean JNICALL 293 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 294 295 JNIEXPORT jobject JNICALL 296 JVM_GetStackTrace(JNIEnv *env, jobject thread); 297 298 JNIEXPORT void JNICALL 299 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 300 301 JNIEXPORT jobjectArray JNICALL 302 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 303 304 JNIEXPORT void JNICALL 305 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 306 307 /* getStackTrace() and getAllStackTraces() method */ 308 JNIEXPORT jobjectArray JNICALL 309 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 310 311 JNIEXPORT jobject JNICALL 312 JVM_ScopedValueCache(JNIEnv *env, jclass threadClass); 313 314 JNIEXPORT void JNICALL 315 JVM_SetScopedValueCache(JNIEnv *env, jclass threadClass, jobject theCache); 316 317 JNIEXPORT jobject JNICALL 318 JVM_FindScopedValueBindings(JNIEnv *env, jclass threadClass); 319 320 JNIEXPORT jlong JNICALL 321 JVM_GetNextThreadIdOffset(JNIEnv *env, jclass threadClass); 322 323 /* 324 * jdk.internal.vm.Continuation 325 */ 326 JNIEXPORT void JNICALL 327 JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls); 328 329 /* 330 * java.lang.SecurityManager 331 */ 332 JNIEXPORT jobjectArray JNICALL 333 JVM_GetClassContext(JNIEnv *env); 334 335 /* 336 * java.lang.Package 337 */ 338 JNIEXPORT jstring JNICALL 339 JVM_GetSystemPackage(JNIEnv *env, jstring name); 340 341 JNIEXPORT jobjectArray JNICALL 342 JVM_GetSystemPackages(JNIEnv *env); 343 344 /* 345 * java.lang.ref.Reference 346 */ 347 JNIEXPORT jobject JNICALL 348 JVM_GetAndClearReferencePendingList(JNIEnv *env); 349 350 JNIEXPORT jboolean JNICALL 351 JVM_HasReferencePendingList(JNIEnv *env); 352 353 JNIEXPORT void JNICALL 354 JVM_WaitForReferencePendingList(JNIEnv *env); 355 356 JNIEXPORT jboolean JNICALL 357 JVM_ReferenceRefersTo(JNIEnv *env, jobject ref, jobject o); 358 359 JNIEXPORT void JNICALL 360 JVM_ReferenceClear(JNIEnv *env, jobject ref); 361 362 /* 363 * java.lang.ref.PhantomReference 364 */ 365 JNIEXPORT jboolean JNICALL 366 JVM_PhantomReferenceRefersTo(JNIEnv *env, jobject ref, jobject o); 367 368 /* 369 * java.io.ObjectInputStream 370 */ 371 JNIEXPORT jobject JNICALL 372 JVM_LatestUserDefinedLoader(JNIEnv *env); 373 374 /* 375 * java.lang.reflect.Array 376 */ 377 JNIEXPORT jint JNICALL 378 JVM_GetArrayLength(JNIEnv *env, jobject arr); 379 380 JNIEXPORT jobject JNICALL 381 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 382 383 JNIEXPORT jvalue JNICALL 384 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 385 386 JNIEXPORT void JNICALL 387 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 388 389 JNIEXPORT void JNICALL 390 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 391 unsigned char vCode); 392 393 JNIEXPORT jobject JNICALL 394 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 395 396 JNIEXPORT jobject JNICALL 397 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 398 399 400 /* 401 * Returns the immediate caller class of the native method invoking 402 * JVM_GetCallerClass. The Method.invoke and other frames due to 403 * reflection machinery are skipped. 404 * 405 * The caller is expected to be marked with 406 * jdk.internal.reflect.CallerSensitive. The JVM will throw an 407 * error if it is not marked properly. 408 */ 409 JNIEXPORT jclass JNICALL 410 JVM_GetCallerClass(JNIEnv *env); 411 412 413 /* 414 * Find primitive classes 415 * utf: class name 416 */ 417 JNIEXPORT jclass JNICALL 418 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 419 420 421 /* 422 * Find a class from a boot class loader. Returns nullptr if class not found. 423 */ 424 JNIEXPORT jclass JNICALL 425 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 426 427 /* 428 * Find a class from a given class loader. Throws ClassNotFoundException. 429 * name: name of class 430 * init: whether initialization is done 431 * loader: class loader to look up the class. This may not be the same as the caller's 432 * class loader. 433 * caller: initiating class. The initiating class may be null when a security 434 * manager is not installed. 435 */ 436 JNIEXPORT jclass JNICALL 437 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 438 jobject loader, jclass caller); 439 440 /* 441 * Find a class from a given class. 442 */ 443 JNIEXPORT jclass JNICALL 444 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 445 jclass from); 446 447 /* Find a loaded class cached by the VM */ 448 JNIEXPORT jclass JNICALL 449 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 450 451 /* Define a class */ 452 JNIEXPORT jclass JNICALL 453 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 454 jsize len, jobject pd); 455 456 /* Define a class with a source (added in JDK1.5) */ 457 JNIEXPORT jclass JNICALL 458 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 459 const jbyte *buf, jsize len, jobject pd, 460 const char *source); 461 462 /* 463 * Define a class with the specified lookup class. 464 * lookup: Lookup class 465 * name: the name of the class 466 * buf: class bytes 467 * len: length of class bytes 468 * pd: protection domain 469 * init: initialize the class 470 * flags: properties of the class 471 * classData: private static pre-initialized field; may be null 472 */ 473 JNIEXPORT jclass JNICALL 474 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf, 475 jsize len, jobject pd, jboolean init, int flags, jobject classData); 476 477 /* 478 * Module support functions 479 */ 480 481 /* 482 * Define a module with the specified packages and bind the module to the 483 * given class loader. 484 * module: module to define 485 * is_open: specifies if module is open (currently ignored) 486 * version: the module version 487 * location: the module location 488 * packages: array of packages in the module 489 */ 490 JNIEXPORT void JNICALL 491 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version, 492 jstring location, jobjectArray packages); 493 494 /* 495 * Set the boot loader's unnamed module. 496 * module: boot loader's unnamed module 497 */ 498 JNIEXPORT void JNICALL 499 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module); 500 501 /* 502 * Do a qualified export of a package. 503 * from_module: module containing the package to export 504 * package: name of the package to export 505 * to_module: module to export the package to 506 */ 507 JNIEXPORT void JNICALL 508 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module); 509 510 /* 511 * Do an export of a package to all unnamed modules. 512 * from_module: module containing the package to export 513 * package: name of the package to export to all unnamed modules 514 */ 515 JNIEXPORT void JNICALL 516 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package); 517 518 /* 519 * Do an unqualified export of a package. 520 * from_module: module containing the package to export 521 * package: name of the package to export 522 */ 523 JNIEXPORT void JNICALL 524 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package); 525 526 /* 527 * Add a module to the list of modules that a given module can read. 528 * from_module: module requesting read access 529 * source_module: module that from_module wants to read 530 */ 531 JNIEXPORT void JNICALL 532 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module); 533 534 /* 535 * Define all modules that have been stored in the CDS archived heap. 536 * platform_loader: the built-in platform class loader 537 * system_loader: the built-in system class loader 538 */ 539 JNIEXPORT void JNICALL 540 JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader); 541 542 /* 543 * Reflection support functions 544 */ 545 546 JNIEXPORT jstring JNICALL 547 JVM_InitClassName(JNIEnv *env, jclass cls); 548 549 JNIEXPORT jobjectArray JNICALL 550 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 551 552 JNIEXPORT jboolean JNICALL 553 JVM_IsInterface(JNIEnv *env, jclass cls); 554 555 JNIEXPORT jobjectArray JNICALL 556 JVM_GetClassSigners(JNIEnv *env, jclass cls); 557 558 JNIEXPORT void JNICALL 559 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 560 561 JNIEXPORT jobject JNICALL 562 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 563 564 JNIEXPORT jboolean JNICALL 565 JVM_IsArrayClass(JNIEnv *env, jclass cls); 566 567 JNIEXPORT jboolean JNICALL 568 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 569 570 JNIEXPORT jboolean JNICALL 571 JVM_IsHiddenClass(JNIEnv *env, jclass cls); 572 573 JNIEXPORT jboolean JNICALL 574 JVM_IsIdentityClass(JNIEnv *env, jclass cls); 575 576 JNIEXPORT jboolean JNICALL 577 JVM_IsImplicitlyConstructibleClass(JNIEnv *env, jclass cls); 578 579 JNIEXPORT jint JNICALL 580 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 581 582 JNIEXPORT jobjectArray JNICALL 583 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 584 585 JNIEXPORT jclass JNICALL 586 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 587 588 JNIEXPORT jstring JNICALL 589 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 590 591 /* Generics support (JDK 1.5) */ 592 JNIEXPORT jstring JNICALL 593 JVM_GetClassSignature(JNIEnv *env, jclass cls); 594 595 /* Annotations support (JDK 1.5) */ 596 JNIEXPORT jbyteArray JNICALL 597 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 598 599 /* Type use annotations support (JDK 1.8) */ 600 601 JNIEXPORT jbyteArray JNICALL 602 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 603 604 JNIEXPORT jbyteArray JNICALL 605 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 606 607 JNIEXPORT jbyteArray JNICALL 608 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 609 610 /* 611 * New (JDK 1.4) reflection implementation 612 */ 613 614 JNIEXPORT jobjectArray JNICALL 615 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 616 617 JNIEXPORT jobjectArray JNICALL 618 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 619 620 JNIEXPORT jobjectArray JNICALL 621 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 622 623 624 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 625 This returns the access flags for the class as specified in the 626 class file rather than searching the InnerClasses attribute (if 627 present) to find the source-level access flags. Only the values of 628 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 629 valid. */ 630 JNIEXPORT jint JNICALL 631 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 632 633 /* Nestmates - since JDK 11 */ 634 635 JNIEXPORT jboolean JNICALL 636 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member); 637 638 JNIEXPORT jclass JNICALL 639 JVM_GetNestHost(JNIEnv *env, jclass current); 640 641 JNIEXPORT jobjectArray JNICALL 642 JVM_GetNestMembers(JNIEnv *env, jclass current); 643 644 /* Records - since JDK 16 */ 645 646 JNIEXPORT jboolean JNICALL 647 JVM_IsRecord(JNIEnv *env, jclass cls); 648 649 JNIEXPORT jobjectArray JNICALL 650 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass); 651 652 /* Sealed classes - since JDK 17 */ 653 654 JNIEXPORT jobjectArray JNICALL 655 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current); 656 657 /* The following two reflection routines are still needed due to startup time issues */ 658 /* 659 * java.lang.reflect.Method 660 */ 661 JNIEXPORT jobject JNICALL 662 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 663 664 /* 665 * java.lang.reflect.Constructor 666 */ 667 JNIEXPORT jobject JNICALL 668 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 669 670 /* 671 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 672 */ 673 674 JNIEXPORT jobject JNICALL 675 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 676 677 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 678 (JNIEnv *env, jobject unused, jobject jcpool); 679 680 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 681 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 682 683 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 684 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 685 686 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 687 (JNIEnv *env, jobject obj, jobject unused, jint index); 688 689 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 690 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 691 692 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 693 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 694 695 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 696 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 697 698 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 699 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 700 701 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 702 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 703 704 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 705 (JNIEnv *env, jobject obj, jobject unused, jint index); 706 707 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 708 (JNIEnv *env, jobject obj, jobject unused, jint index); 709 710 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 711 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 712 713 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 714 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 715 716 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 717 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 718 719 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 720 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 721 722 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 723 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 724 725 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 726 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 727 728 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 729 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 730 731 /* 732 * Parameter reflection 733 */ 734 735 JNIEXPORT jobjectArray JNICALL 736 JVM_GetMethodParameters(JNIEnv *env, jobject method); 737 738 /* 739 * java.security.* 740 */ 741 742 JNIEXPORT jobject JNICALL 743 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 744 745 /* 746 * Ensure that code doing a stackwalk and using javaVFrame::locals() to 747 * get the value will see a materialized value and not a scalar-replaced 748 * null value. 749 */ 750 #define JVM_EnsureMaterializedForStackWalk(env, value) \ 751 do {} while(0) // Nothing to do. The fact that the value escaped 752 // through a native method is enough. 753 JNIEXPORT void JNICALL 754 JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value); 755 756 JNIEXPORT jobject JNICALL 757 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 758 759 /* 760 * Signal support, used to implement the shutdown sequence. Every VM must 761 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 762 * (^C) and the latter for external termination (kill, system shutdown, etc.). 763 * Other platform-dependent signal values may also be supported. 764 */ 765 766 JNIEXPORT void * JNICALL 767 JVM_RegisterSignal(jint sig, void *handler); 768 769 JNIEXPORT jboolean JNICALL 770 JVM_RaiseSignal(jint sig); 771 772 JNIEXPORT jint JNICALL 773 JVM_FindSignal(const char *name); 774 775 /* 776 * Retrieve the assertion directives for the specified class. 777 */ 778 JNIEXPORT jboolean JNICALL 779 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 780 781 /* 782 * Retrieve the assertion directives from the VM. 783 */ 784 JNIEXPORT jobject JNICALL 785 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 786 787 /* 788 * java.lang.ref.Finalizer 789 */ 790 JNIEXPORT void JNICALL 791 JVM_ReportFinalizationComplete(JNIEnv *env, jobject finalizee); 792 793 JNIEXPORT jboolean JNICALL 794 JVM_IsFinalizationEnabled(JNIEnv *env); 795 796 /************************************************************************* 797 PART 2: Support for the Verifier and Class File Format Checker 798 ************************************************************************/ 799 /* 800 * Return the class name in UTF format. The result is valid 801 * until JVM_ReleaseUTf is called. 802 * 803 * The caller must treat the string as a constant and not modify it 804 * in any way. 805 */ 806 JNIEXPORT const char * JNICALL 807 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 808 809 /* 810 * Returns the constant pool types in the buffer provided by "types." 811 */ 812 JNIEXPORT void JNICALL 813 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 814 815 /* 816 * Returns the number of Constant Pool entries. 817 */ 818 JNIEXPORT jint JNICALL 819 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 820 821 /* 822 * Returns the number of *declared* fields or methods. 823 */ 824 JNIEXPORT jint JNICALL 825 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 826 827 JNIEXPORT jint JNICALL 828 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 829 830 /* 831 * Returns the CP indexes of exceptions raised by a given method. 832 * Places the result in the given buffer. 833 * 834 * The method is identified by method_index. 835 */ 836 JNIEXPORT void JNICALL 837 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 838 unsigned short *exceptions); 839 /* 840 * Returns the number of exceptions raised by a given method. 841 * The method is identified by method_index. 842 */ 843 JNIEXPORT jint JNICALL 844 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 845 846 /* 847 * Returns the byte code sequence of a given method. 848 * Places the result in the given buffer. 849 * 850 * The method is identified by method_index. 851 */ 852 JNIEXPORT void JNICALL 853 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 854 unsigned char *code); 855 856 /* 857 * Returns the length of the byte code sequence of a given method. 858 * The method is identified by method_index. 859 */ 860 JNIEXPORT jint JNICALL 861 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 862 863 /* 864 * A structure used to a capture exception table entry in a Java method. 865 */ 866 typedef struct { 867 jint start_pc; 868 jint end_pc; 869 jint handler_pc; 870 jint catchType; 871 } JVM_ExceptionTableEntryType; 872 873 /* 874 * Returns the exception table entry at entry_index of a given method. 875 * Places the result in the given buffer. 876 * 877 * The method is identified by method_index. 878 */ 879 JNIEXPORT void JNICALL 880 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 881 jint entry_index, 882 JVM_ExceptionTableEntryType *entry); 883 884 /* 885 * Returns the length of the exception table of a given method. 886 * The method is identified by method_index. 887 */ 888 JNIEXPORT jint JNICALL 889 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 890 891 /* 892 * Returns the modifiers of a given field. 893 * The field is identified by field_index. 894 */ 895 JNIEXPORT jint JNICALL 896 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 897 898 /* 899 * Returns the modifiers of a given method. 900 * The method is identified by method_index. 901 */ 902 JNIEXPORT jint JNICALL 903 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 904 905 /* 906 * Returns the number of local variables of a given method. 907 * The method is identified by method_index. 908 */ 909 JNIEXPORT jint JNICALL 910 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 911 912 /* 913 * Returns the number of arguments (including this pointer) of a given method. 914 * The method is identified by method_index. 915 */ 916 JNIEXPORT jint JNICALL 917 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 918 919 /* 920 * Returns the maximum amount of stack (in words) used by a given method. 921 * The method is identified by method_index. 922 */ 923 JNIEXPORT jint JNICALL 924 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 925 926 /* 927 * Is a given method a constructor. 928 * The method is identified by method_index. 929 */ 930 JNIEXPORT jboolean JNICALL 931 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 932 933 /* 934 * Is the given method generated by the VM. 935 * The method is identified by method_index. 936 */ 937 JNIEXPORT jboolean JNICALL 938 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 939 940 /* 941 * Returns the name of a given method in UTF format. 942 * The result remains valid until JVM_ReleaseUTF is called. 943 * 944 * The caller must treat the string as a constant and not modify it 945 * in any way. 946 */ 947 JNIEXPORT const char * JNICALL 948 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 949 950 /* 951 * Returns the signature of a given method in UTF format. 952 * The result remains valid until JVM_ReleaseUTF is called. 953 * 954 * The caller must treat the string as a constant and not modify it 955 * in any way. 956 */ 957 JNIEXPORT const char * JNICALL 958 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 959 960 /* 961 * Returns the name of the field referred to at a given constant pool 962 * index. 963 * 964 * The result is in UTF format and remains valid until JVM_ReleaseUTF 965 * is called. 966 * 967 * The caller must treat the string as a constant and not modify it 968 * in any way. 969 */ 970 JNIEXPORT const char * JNICALL 971 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 972 973 /* 974 * Returns the name of the method referred to at a given constant pool 975 * index. 976 * 977 * The result is in UTF format and remains valid until JVM_ReleaseUTF 978 * is called. 979 * 980 * The caller must treat the string as a constant and not modify it 981 * in any way. 982 */ 983 JNIEXPORT const char * JNICALL 984 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 985 986 /* 987 * Returns the signature of the method referred to at a given constant pool 988 * index. 989 * 990 * The result is in UTF format and remains valid until JVM_ReleaseUTF 991 * is called. 992 * 993 * The caller must treat the string as a constant and not modify it 994 * in any way. 995 */ 996 JNIEXPORT const char * JNICALL 997 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 998 999 /* 1000 * Returns the signature of the field referred to at a given constant pool 1001 * index. 1002 * 1003 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1004 * is called. 1005 * 1006 * The caller must treat the string as a constant and not modify it 1007 * in any way. 1008 */ 1009 JNIEXPORT const char * JNICALL 1010 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 1011 1012 /* 1013 * Returns the class name referred to at a given constant pool index. 1014 * 1015 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1016 * is called. 1017 * 1018 * The caller must treat the string as a constant and not modify it 1019 * in any way. 1020 */ 1021 JNIEXPORT const char * JNICALL 1022 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 1023 1024 /* 1025 * Returns the class name referred to at a given constant pool index. 1026 * 1027 * The constant pool entry must refer to a CONSTANT_Fieldref. 1028 * 1029 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1030 * is called. 1031 * 1032 * The caller must treat the string as a constant and not modify it 1033 * in any way. 1034 */ 1035 JNIEXPORT const char * JNICALL 1036 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 1037 1038 /* 1039 * Returns the class name referred to at a given constant pool index. 1040 * 1041 * The constant pool entry must refer to CONSTANT_Methodref or 1042 * CONSTANT_InterfaceMethodref. 1043 * 1044 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1045 * is called. 1046 * 1047 * The caller must treat the string as a constant and not modify it 1048 * in any way. 1049 */ 1050 JNIEXPORT const char * JNICALL 1051 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1052 1053 /* 1054 * Returns the modifiers of a field in calledClass. The field is 1055 * referred to in class cb at constant pool entry index. 1056 * 1057 * The caller must treat the string as a constant and not modify it 1058 * in any way. 1059 * 1060 * Returns -1 if the field does not exist in calledClass. 1061 */ 1062 JNIEXPORT jint JNICALL 1063 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1064 1065 /* 1066 * Returns the modifiers of a method in calledClass. The method is 1067 * referred to in class cb at constant pool entry index. 1068 * 1069 * Returns -1 if the method does not exist in calledClass. 1070 */ 1071 JNIEXPORT jint JNICALL 1072 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1073 1074 /* 1075 * Releases the UTF string obtained from the VM. 1076 */ 1077 JNIEXPORT void JNICALL 1078 JVM_ReleaseUTF(const char *utf); 1079 1080 /* 1081 * Compare if two classes are in the same package. 1082 */ 1083 JNIEXPORT jboolean JNICALL 1084 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1085 1086 1087 /************************************************************************* 1088 PART 3: I/O and Network Support 1089 ************************************************************************/ 1090 1091 /* 1092 * Convert a pathname into native format. This function does syntactic 1093 * cleanup, such as removing redundant separator characters. It modifies 1094 * the given pathname string in place. 1095 */ 1096 JNIEXPORT char * JNICALL 1097 JVM_NativePath(char *); 1098 1099 JNIEXPORT void * JNICALL 1100 JVM_RawMonitorCreate(void); 1101 1102 JNIEXPORT void JNICALL 1103 JVM_RawMonitorDestroy(void *mon); 1104 1105 JNIEXPORT jint JNICALL 1106 JVM_RawMonitorEnter(void *mon); 1107 1108 JNIEXPORT void JNICALL 1109 JVM_RawMonitorExit(void *mon); 1110 1111 /* 1112 * java.lang.management support 1113 */ 1114 JNIEXPORT void* JNICALL 1115 JVM_GetManagement(jint version); 1116 1117 /* 1118 * com.sun.tools.attach.VirtualMachine support 1119 * 1120 * Initialize the agent properties with the properties maintained in the VM. 1121 */ 1122 JNIEXPORT jobject JNICALL 1123 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1124 1125 JNIEXPORT jstring JNICALL 1126 JVM_GetTemporaryDirectory(JNIEnv *env); 1127 1128 JNIEXPORT jarray JNICALL 1129 JVM_NewNullRestrictedArray(JNIEnv *env, jclass elmClass, jint len); 1130 1131 JNIEXPORT jboolean JNICALL 1132 JVM_IsNullRestrictedArray(JNIEnv *env, jobject obj); 1133 1134 /* Generics reflection support. 1135 * 1136 * Returns information about the given class's EnclosingMethod 1137 * attribute, if present, or null if the class had no enclosing 1138 * method. 1139 * 1140 * If non-null, the returned array contains three elements. Element 0 1141 * is the java.lang.Class of which the enclosing method is a member, 1142 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1143 * method's name and descriptor, respectively. 1144 */ 1145 JNIEXPORT jobjectArray JNICALL 1146 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1147 1148 /* 1149 * Virtual thread support. 1150 */ 1151 JNIEXPORT void JNICALL 1152 JVM_VirtualThreadStart(JNIEnv* env, jobject vthread); 1153 1154 JNIEXPORT void JNICALL 1155 JVM_VirtualThreadEnd(JNIEnv* env, jobject vthread); 1156 1157 JNIEXPORT void JNICALL 1158 JVM_VirtualThreadMount(JNIEnv* env, jobject vthread, jboolean hide); 1159 1160 JNIEXPORT void JNICALL 1161 JVM_VirtualThreadUnmount(JNIEnv* env, jobject vthread, jboolean hide); 1162 1163 JNIEXPORT void JNICALL 1164 JVM_VirtualThreadHideFrames(JNIEnv* env, jclass clazz, jboolean hide); 1165 1166 JNIEXPORT void JNICALL 1167 JVM_VirtualThreadDisableSuspend(JNIEnv* env, jclass clazz, jboolean enter); 1168 1169 /* 1170 * Core reflection support. 1171 */ 1172 JNIEXPORT jint JNICALL 1173 JVM_GetClassFileVersion(JNIEnv *env, jclass current); 1174 1175 /* 1176 * Return JNI_TRUE if warnings are printed when agents are dynamically loaded. 1177 */ 1178 JNIEXPORT jboolean JNICALL 1179 JVM_PrintWarningAtDynamicAgentLoad(void); 1180 1181 /* 1182 * This structure is used by the launcher to get the default thread 1183 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1184 * version of 1.1. As it is not supported otherwise, it has been removed 1185 * from jni.h 1186 */ 1187 typedef struct JDK1_1InitArgs { 1188 jint version; 1189 1190 char **properties; 1191 jint checkSource; 1192 jint nativeStackSize; 1193 jint javaStackSize; 1194 jint minHeapSize; 1195 jint maxHeapSize; 1196 jint verifyMode; 1197 char *classpath; 1198 1199 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1200 void (JNICALL *exit)(jint code); 1201 void (JNICALL *abort)(void); 1202 1203 jint enableClassGC; 1204 jint enableVerboseGC; 1205 jint disableAsyncGC; 1206 jint verbose; 1207 jboolean debugging; 1208 jint debugPort; 1209 } JDK1_1InitArgs; 1210 1211 1212 #ifdef __cplusplus 1213 } /* extern "C" */ 1214 1215 #endif /* __cplusplus */ 1216 1217 #endif /* !_JAVASOFT_JVM_H_ */