1 /* 2 * Copyright (c) 1997, 2025, 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_constants.h" 33 #include "jvm_io.h" 34 #include "jvm_md.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 jboolean JNICALL 91 JVM_AOTIsTraining(JNIEnv *env); 92 93 JNIEXPORT void JNICALL 94 JVM_AOTEndTraining(JNIEnv *env); 95 96 JNIEXPORT jlong JNICALL 97 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored); 98 99 JNIEXPORT jlong JNICALL 100 JVM_NanoTime(JNIEnv *env, jclass ignored); 101 102 JNIEXPORT jlong JNICALL 103 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs); 104 105 JNIEXPORT void JNICALL 106 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, 107 jobject dst, jint dst_pos, jint length); 108 109 /* 110 * Return an array of all properties as alternating name and value pairs. 111 */ 112 JNIEXPORT jobjectArray JNICALL 113 JVM_GetProperties(JNIEnv *env); 114 115 /* 116 * java.lang.Runtime 117 */ 118 JNIEXPORT void JNICALL 119 JVM_BeforeHalt(); 120 121 JNIEXPORT void JNICALL 122 JVM_Halt(jint code); 123 124 JNIEXPORT void JNICALL 125 JVM_GC(void); 126 127 /* Returns the number of real-time milliseconds that have elapsed since the 128 * least-recently-inspected heap object was last inspected by the garbage 129 * collector. 130 * 131 * For simple stop-the-world collectors this value is just the time 132 * since the most recent collection. For generational collectors it is the 133 * time since the oldest generation was most recently collected. Other 134 * collectors are free to return a pessimistic estimate of the elapsed time, or 135 * simply the time since the last full collection was performed. 136 * 137 * Note that in the presence of reference objects, a given object that is no 138 * longer strongly reachable may have to be inspected multiple times before it 139 * can be reclaimed. 140 */ 141 JNIEXPORT jlong JNICALL 142 JVM_MaxObjectInspectionAge(void); 143 144 JNIEXPORT jlong JNICALL 145 JVM_TotalMemory(void); 146 147 JNIEXPORT jlong JNICALL 148 JVM_FreeMemory(void); 149 150 JNIEXPORT jlong JNICALL 151 JVM_MaxMemory(void); 152 153 JNIEXPORT jint JNICALL 154 JVM_ActiveProcessorCount(void); 155 156 JNIEXPORT jboolean JNICALL 157 JVM_IsUseContainerSupport(void); 158 159 JNIEXPORT jboolean JNICALL 160 JVM_IsContainerized(void); 161 162 JNIEXPORT void * JNICALL 163 JVM_LoadZipLibrary(); 164 165 JNIEXPORT void * JNICALL 166 JVM_LoadLibrary(const char *name, jboolean throwException); 167 168 JNIEXPORT void JNICALL 169 JVM_UnloadLibrary(void * handle); 170 171 JNIEXPORT void * JNICALL 172 JVM_FindLibraryEntry(void *handle, const char *name); 173 174 JNIEXPORT jboolean JNICALL 175 JVM_IsSupportedJNIVersion(jint version); 176 177 JNIEXPORT jobjectArray JNICALL 178 JVM_GetVmArguments(JNIEnv *env); 179 180 JNIEXPORT jboolean JNICALL 181 JVM_IsPreviewEnabled(void); 182 183 JNIEXPORT jboolean JNICALL 184 JVM_IsContinuationsSupported(void); 185 186 JNIEXPORT jboolean JNICALL 187 JVM_IsForeignLinkerSupported(void); 188 189 JNIEXPORT jboolean JNICALL 190 JVM_IsStaticallyLinked(void); 191 192 JNIEXPORT void JNICALL 193 JVM_InitializeFromArchive(JNIEnv* env, jclass cls); 194 195 JNIEXPORT void JNICALL 196 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller, 197 jstring interfaceMethodName, 198 jobject factoryType, 199 jobject interfaceMethodType, 200 jobject implementationMember, 201 jobject dynamicMethodType, 202 jclass lambdaProxyClass); 203 204 JNIEXPORT jclass JNICALL 205 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller, 206 jstring interfaceMethodName, 207 jobject factoryType, 208 jobject interfaceMethodType, 209 jobject implementationMember, 210 jobject dynamicMethodType); 211 212 JNIEXPORT jint JNICALL 213 JVM_GetCDSConfigStatus(); 214 215 JNIEXPORT jlong JNICALL 216 JVM_GetRandomSeedForDumping(); 217 218 JNIEXPORT void JNICALL 219 JVM_LogLambdaFormInvoker(JNIEnv* env, jstring line); 220 221 JNIEXPORT void JNICALL 222 JVM_LogDynamicProxy(JNIEnv *env, jobject loader, jstring proxy_name, jobjectArray interfaces, jint accessFlags); 223 224 JNIEXPORT void JNICALL 225 JVM_DumpClassListToFile(JNIEnv* env, jstring fileName); 226 227 JNIEXPORT void JNICALL 228 JVM_DumpDynamicArchive(JNIEnv* env, jstring archiveName); 229 230 JNIEXPORT jboolean JNICALL 231 JVM_NeedsClassInitBarrierForCDS(JNIEnv* env, jclass cls); 232 233 /* 234 * java.lang.Throwable 235 */ 236 JNIEXPORT void JNICALL 237 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 238 239 /* 240 * java.lang.StackTraceElement 241 */ 242 JNIEXPORT void JNICALL 243 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth); 244 245 JNIEXPORT void JNICALL 246 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo); 247 248 /* 249 * java.lang.NullPointerException 250 */ 251 252 JNIEXPORT jstring JNICALL 253 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable); 254 255 /* 256 * java.lang.StackWalker 257 */ 258 enum { 259 JVM_STACKWALK_CLASS_INFO_ONLY = 0x2, 260 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 261 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 262 }; 263 264 JNIEXPORT void JNICALL 265 JVM_ExpandStackFrameInfo(JNIEnv *env, jobject obj); 266 267 JNIEXPORT jobject JNICALL 268 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jint mode, 269 jint skip_frames, jobject contScope, jobject cont, 270 jint buffer_size, jint start_index, jobjectArray frames); 271 272 JNIEXPORT jint JNICALL 273 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jint mode, jlong anchor, 274 jint last_batch_count, jint buffer_size, jint start_index, 275 jobjectArray frames); 276 277 JNIEXPORT void JNICALL 278 JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont); 279 280 /* 281 * java.lang.Thread 282 */ 283 JNIEXPORT void JNICALL 284 JVM_StartThread(JNIEnv *env, jobject thread); 285 286 JNIEXPORT void JNICALL 287 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 288 289 JNIEXPORT void JNICALL 290 JVM_Yield(JNIEnv *env, jclass threadClass); 291 292 JNIEXPORT void JNICALL 293 JVM_SleepNanos(JNIEnv *env, jclass threadClass, jlong nanos); 294 295 JNIEXPORT jobject JNICALL 296 JVM_CurrentCarrierThread(JNIEnv *env, jclass threadClass); 297 298 JNIEXPORT jobject JNICALL 299 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 300 301 JNIEXPORT void JNICALL 302 JVM_SetCurrentThread(JNIEnv *env, jobject thisThread, jobject theThread); 303 304 JNIEXPORT void JNICALL 305 JVM_Interrupt(JNIEnv *env, jobject thread); 306 307 JNIEXPORT jboolean JNICALL 308 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 309 310 JNIEXPORT jobject JNICALL 311 JVM_GetStackTrace(JNIEnv *env, jobject thread); 312 313 JNIEXPORT jobjectArray JNICALL 314 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 315 316 JNIEXPORT void JNICALL 317 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 318 319 /* getStackTrace() and getAllStackTraces() method */ 320 JNIEXPORT jobjectArray JNICALL 321 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 322 323 JNIEXPORT jobject JNICALL 324 JVM_ScopedValueCache(JNIEnv *env, jclass threadClass); 325 326 JNIEXPORT void JNICALL 327 JVM_SetScopedValueCache(JNIEnv *env, jclass threadClass, jobject theCache); 328 329 JNIEXPORT jobject JNICALL 330 JVM_FindScopedValueBindings(JNIEnv *env, jclass threadClass); 331 332 JNIEXPORT jlong JNICALL 333 JVM_GetNextThreadIdOffset(JNIEnv *env, jclass threadClass); 334 335 /* 336 * jdk.internal.vm.Continuation 337 */ 338 JNIEXPORT void JNICALL 339 JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls); 340 341 /* 342 * java.lang.Package 343 */ 344 JNIEXPORT jstring JNICALL 345 JVM_GetSystemPackage(JNIEnv *env, jstring name); 346 347 JNIEXPORT jobjectArray JNICALL 348 JVM_GetSystemPackages(JNIEnv *env); 349 350 /* 351 * java.lang.ref.Reference 352 */ 353 JNIEXPORT jobject JNICALL 354 JVM_GetAndClearReferencePendingList(JNIEnv *env); 355 356 JNIEXPORT jboolean JNICALL 357 JVM_HasReferencePendingList(JNIEnv *env); 358 359 JNIEXPORT void JNICALL 360 JVM_WaitForReferencePendingList(JNIEnv *env); 361 362 JNIEXPORT jboolean JNICALL 363 JVM_ReferenceRefersTo(JNIEnv *env, jobject ref, jobject o); 364 365 JNIEXPORT void JNICALL 366 JVM_ReferenceClear(JNIEnv *env, jobject ref); 367 368 /* 369 * java.lang.ref.PhantomReference 370 */ 371 JNIEXPORT jboolean JNICALL 372 JVM_PhantomReferenceRefersTo(JNIEnv *env, jobject ref, jobject o); 373 374 /* 375 * java.io.ObjectInputStream 376 */ 377 JNIEXPORT jobject JNICALL 378 JVM_LatestUserDefinedLoader(JNIEnv *env); 379 380 /* 381 * java.lang.reflect.Array 382 */ 383 JNIEXPORT jint JNICALL 384 JVM_GetArrayLength(JNIEnv *env, jobject arr); 385 386 JNIEXPORT jobject JNICALL 387 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 388 389 JNIEXPORT jvalue JNICALL 390 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 391 392 JNIEXPORT void JNICALL 393 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 394 395 JNIEXPORT void JNICALL 396 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 397 unsigned char vCode); 398 399 JNIEXPORT jobject JNICALL 400 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 401 402 JNIEXPORT jobject JNICALL 403 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 404 405 406 /* 407 * Returns the immediate caller class of the native method invoking 408 * JVM_GetCallerClass. The Method.invoke and other frames due to 409 * reflection machinery are skipped. 410 * 411 * The caller is expected to be marked with 412 * jdk.internal.reflect.CallerSensitive. The JVM will throw an 413 * error if it is not marked properly. 414 */ 415 JNIEXPORT jclass JNICALL 416 JVM_GetCallerClass(JNIEnv *env); 417 418 419 /* 420 * Find primitive classes 421 * utf: class name 422 */ 423 JNIEXPORT jclass JNICALL 424 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 425 426 427 /* 428 * Find a class from a boot class loader. Returns null if class not found. 429 */ 430 JNIEXPORT jclass JNICALL 431 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 432 433 /* 434 * Find a class from a given class loader. Throws ClassNotFoundException. 435 * name: name of class 436 * init: whether initialization is done 437 * loader: class loader to look up the class. This may not be the same as the caller's 438 * class loader. 439 * caller: initiating class. The initiating class may be null when a security 440 * manager is not installed. 441 */ 442 JNIEXPORT jclass JNICALL 443 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 444 jobject loader, jclass caller); 445 446 /* 447 * Find a class from a given class. 448 */ 449 JNIEXPORT jclass JNICALL 450 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 451 jclass from); 452 453 /* Find a loaded class cached by the VM */ 454 JNIEXPORT jclass JNICALL 455 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 456 457 /* Define a class */ 458 JNIEXPORT jclass JNICALL 459 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 460 jsize len, jobject pd); 461 462 /* Define a class with a source (added in JDK1.5) */ 463 JNIEXPORT jclass JNICALL 464 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 465 const jbyte *buf, jsize len, jobject pd, 466 const char *source); 467 468 /* 469 * Define a class with the specified lookup class. 470 * lookup: Lookup class 471 * name: the name of the class 472 * buf: class bytes 473 * len: length of class bytes 474 * pd: protection domain 475 * init: initialize the class 476 * flags: properties of the class 477 * classData: private static pre-initialized field; may be null 478 */ 479 JNIEXPORT jclass JNICALL 480 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf, 481 jsize len, jobject pd, jboolean init, int flags, jobject classData); 482 483 /* 484 * Module support functions 485 */ 486 487 /* 488 * Define a module with the specified packages and bind the module to the 489 * given class loader. 490 * module: module to define 491 * is_open: specifies if module is open (currently ignored) 492 * version: the module version 493 * location: the module location 494 * packages: array of packages in the module 495 */ 496 JNIEXPORT void JNICALL 497 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version, 498 jstring location, jobjectArray packages); 499 500 /* 501 * Set the boot loader's unnamed module. 502 * module: boot loader's unnamed module 503 */ 504 JNIEXPORT void JNICALL 505 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module); 506 507 /* 508 * Do a qualified export of a package. 509 * from_module: module containing the package to export 510 * package: name of the package to export 511 * to_module: module to export the package to 512 */ 513 JNIEXPORT void JNICALL 514 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module); 515 516 /* 517 * Do an export of a package to all unnamed modules. 518 * from_module: module containing the package to export 519 * package: name of the package to export to all unnamed modules 520 */ 521 JNIEXPORT void JNICALL 522 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package); 523 524 /* 525 * Do an unqualified export of a package. 526 * from_module: module containing the package to export 527 * package: name of the package to export 528 */ 529 JNIEXPORT void JNICALL 530 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package); 531 532 /* 533 * Add a module to the list of modules that a given module can read. 534 * from_module: module requesting read access 535 * source_module: module that from_module wants to read 536 */ 537 JNIEXPORT void JNICALL 538 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module); 539 540 /* 541 * Define all modules that have been stored in the CDS archived heap. 542 * platform_loader: the built-in platform class loader 543 * system_loader: the built-in system class loader 544 */ 545 JNIEXPORT void JNICALL 546 JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader); 547 548 /* 549 * Reflection support functions 550 */ 551 552 JNIEXPORT jstring JNICALL 553 JVM_InitClassName(JNIEnv *env, jclass cls); 554 555 JNIEXPORT jobjectArray JNICALL 556 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 557 558 JNIEXPORT jboolean JNICALL 559 JVM_IsInterface(JNIEnv *env, jclass cls); 560 561 JNIEXPORT jboolean JNICALL 562 JVM_IsHiddenClass(JNIEnv *env, jclass cls); 563 564 JNIEXPORT jobjectArray JNICALL 565 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 566 567 JNIEXPORT jclass JNICALL 568 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 569 570 JNIEXPORT jstring JNICALL 571 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 572 573 /* Generics support (JDK 1.5) */ 574 JNIEXPORT jstring JNICALL 575 JVM_GetClassSignature(JNIEnv *env, jclass cls); 576 577 /* Annotations support (JDK 1.5) */ 578 JNIEXPORT jbyteArray JNICALL 579 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 580 581 /* Type use annotations support (JDK 1.8) */ 582 583 JNIEXPORT jbyteArray JNICALL 584 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 585 586 JNIEXPORT jbyteArray JNICALL 587 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 588 589 JNIEXPORT jbyteArray JNICALL 590 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 591 592 /* 593 * New (JDK 1.4) reflection implementation 594 */ 595 596 JNIEXPORT jobjectArray JNICALL 597 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 598 599 JNIEXPORT jobjectArray JNICALL 600 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 601 602 JNIEXPORT jobjectArray JNICALL 603 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 604 605 606 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 607 This returns the access flags for the class as specified in the 608 class file rather than searching the InnerClasses attribute (if 609 present) to find the source-level access flags. Only the values of 610 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 611 valid. */ 612 JNIEXPORT jint JNICALL 613 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 614 615 /* Nestmates - since JDK 11 */ 616 617 JNIEXPORT jboolean JNICALL 618 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member); 619 620 JNIEXPORT jclass JNICALL 621 JVM_GetNestHost(JNIEnv *env, jclass current); 622 623 JNIEXPORT jobjectArray JNICALL 624 JVM_GetNestMembers(JNIEnv *env, jclass current); 625 626 /* Records - since JDK 16 */ 627 628 JNIEXPORT jboolean JNICALL 629 JVM_IsRecord(JNIEnv *env, jclass cls); 630 631 JNIEXPORT jobjectArray JNICALL 632 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass); 633 634 /* Sealed classes - since JDK 17 */ 635 636 JNIEXPORT jobjectArray JNICALL 637 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current); 638 639 /* The following two reflection routines are still needed due to startup time issues */ 640 /* 641 * java.lang.reflect.Method 642 */ 643 JNIEXPORT jobject JNICALL 644 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 645 646 /* 647 * java.lang.reflect.Constructor 648 */ 649 JNIEXPORT jobject JNICALL 650 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 651 652 /* 653 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 654 */ 655 656 JNIEXPORT jobject JNICALL 657 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 658 659 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 660 (JNIEnv *env, jobject unused, jobject jcpool); 661 662 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 663 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 664 665 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 666 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 667 668 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 669 (JNIEnv *env, jobject obj, jobject unused, jint index); 670 671 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 672 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 673 674 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 675 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 676 677 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 678 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 679 680 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 681 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 682 683 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 684 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 685 686 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 687 (JNIEnv *env, jobject obj, jobject unused, jint index); 688 689 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 690 (JNIEnv *env, jobject obj, jobject unused, jint index); 691 692 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 693 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 694 695 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 696 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 697 698 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 699 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 700 701 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 702 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 703 704 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 705 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 706 707 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 708 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 709 710 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 711 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 712 713 /* 714 * Parameter reflection 715 */ 716 717 JNIEXPORT jobjectArray JNICALL 718 JVM_GetMethodParameters(JNIEnv *env, jobject method); 719 720 /* 721 * Ensure that code doing a stackwalk and using javaVFrame::locals() to 722 * get the value will see a materialized value and not a scalar-replaced 723 * null value. 724 */ 725 #define JVM_EnsureMaterializedForStackWalk(env, value) \ 726 do {} while(0) // Nothing to do. The fact that the value escaped 727 // through a native method is enough. 728 JNIEXPORT void JNICALL 729 JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value); 730 731 /* 732 * Signal support, used to implement the shutdown sequence. Every VM must 733 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 734 * (^C) and the latter for external termination (kill, system shutdown, etc.). 735 * Other platform-dependent signal values may also be supported. 736 */ 737 738 JNIEXPORT void * JNICALL 739 JVM_RegisterSignal(jint sig, void *handler); 740 741 JNIEXPORT jboolean JNICALL 742 JVM_RaiseSignal(jint sig); 743 744 JNIEXPORT jint JNICALL 745 JVM_FindSignal(const char *name); 746 747 /* 748 * Retrieve the assertion directives for the specified class. 749 */ 750 JNIEXPORT jboolean JNICALL 751 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 752 753 /* 754 * Retrieve the assertion directives from the VM. 755 */ 756 JNIEXPORT jobject JNICALL 757 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 758 759 /* 760 * java.lang.ref.Finalizer 761 */ 762 JNIEXPORT void JNICALL 763 JVM_ReportFinalizationComplete(JNIEnv *env, jobject finalizee); 764 765 JNIEXPORT jboolean JNICALL 766 JVM_IsFinalizationEnabled(JNIEnv *env); 767 768 /************************************************************************* 769 PART 2: Support for the Verifier and Class File Format Checker 770 ************************************************************************/ 771 /* 772 * Return the class name in UTF format. The result is valid 773 * until JVM_ReleaseUTf is called. 774 * 775 * The caller must treat the string as a constant and not modify it 776 * in any way. 777 */ 778 JNIEXPORT const char * JNICALL 779 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 780 781 /* 782 * Returns the constant pool types in the buffer provided by "types." 783 */ 784 JNIEXPORT void JNICALL 785 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 786 787 /* 788 * Returns the number of Constant Pool entries. 789 */ 790 JNIEXPORT jint JNICALL 791 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 792 793 /* 794 * Returns the number of *declared* fields or methods. 795 */ 796 JNIEXPORT jint JNICALL 797 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 798 799 JNIEXPORT jint JNICALL 800 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 801 802 /* 803 * Returns the CP indexes of exceptions raised by a given method. 804 * Places the result in the given buffer. 805 * 806 * The method is identified by method_index. 807 */ 808 JNIEXPORT void JNICALL 809 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 810 unsigned short *exceptions); 811 /* 812 * Returns the number of exceptions raised by a given method. 813 * The method is identified by method_index. 814 */ 815 JNIEXPORT jint JNICALL 816 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 817 818 /* 819 * Returns the byte code sequence of a given method. 820 * Places the result in the given buffer. 821 * 822 * The method is identified by method_index. 823 */ 824 JNIEXPORT void JNICALL 825 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 826 unsigned char *code); 827 828 /* 829 * Returns the length of the byte code sequence of a given method. 830 * The method is identified by method_index. 831 */ 832 JNIEXPORT jint JNICALL 833 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 834 835 /* 836 * A structure used to a capture exception table entry in a Java method. 837 */ 838 typedef struct { 839 jint start_pc; 840 jint end_pc; 841 jint handler_pc; 842 jint catchType; 843 } JVM_ExceptionTableEntryType; 844 845 /* 846 * Returns the exception table entry at entry_index of a given method. 847 * Places the result in the given buffer. 848 * 849 * The method is identified by method_index. 850 */ 851 JNIEXPORT void JNICALL 852 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 853 jint entry_index, 854 JVM_ExceptionTableEntryType *entry); 855 856 /* 857 * Returns the length of the exception table of a given method. 858 * The method is identified by method_index. 859 */ 860 JNIEXPORT jint JNICALL 861 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 862 863 /* 864 * Returns the modifiers of a given field. 865 * The field is identified by field_index. 866 */ 867 JNIEXPORT jint JNICALL 868 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 869 870 /* 871 * Returns the modifiers of a given method. 872 * The method is identified by method_index. 873 */ 874 JNIEXPORT jint JNICALL 875 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 876 877 /* 878 * Returns the number of local variables of a given method. 879 * The method is identified by method_index. 880 */ 881 JNIEXPORT jint JNICALL 882 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 883 884 /* 885 * Returns the number of arguments (including this pointer) of a given method. 886 * The method is identified by method_index. 887 */ 888 JNIEXPORT jint JNICALL 889 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 890 891 /* 892 * Returns the maximum amount of stack (in words) used by a given method. 893 * The method is identified by method_index. 894 */ 895 JNIEXPORT jint JNICALL 896 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 897 898 /* 899 * Is a given method a constructor. 900 * The method is identified by method_index. 901 */ 902 JNIEXPORT jboolean JNICALL 903 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 904 905 /* 906 * Is the given method generated by the VM. 907 * The method is identified by method_index. 908 */ 909 JNIEXPORT jboolean JNICALL 910 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 911 912 /* 913 * Returns the name of a given method in UTF format. 914 * The result remains valid until JVM_ReleaseUTF is called. 915 * 916 * The caller must treat the string as a constant and not modify it 917 * in any way. 918 */ 919 JNIEXPORT const char * JNICALL 920 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 921 922 /* 923 * Returns the signature of a given method in UTF format. 924 * The result remains valid until JVM_ReleaseUTF is called. 925 * 926 * The caller must treat the string as a constant and not modify it 927 * in any way. 928 */ 929 JNIEXPORT const char * JNICALL 930 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 931 932 /* 933 * Returns the name of the field referred to at a given constant pool 934 * index. 935 * 936 * The result is in UTF format and remains valid until JVM_ReleaseUTF 937 * is called. 938 * 939 * The caller must treat the string as a constant and not modify it 940 * in any way. 941 */ 942 JNIEXPORT const char * JNICALL 943 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 944 945 /* 946 * Returns the name of the method referred to at a given constant pool 947 * index. 948 * 949 * The result is in UTF format and remains valid until JVM_ReleaseUTF 950 * is called. 951 * 952 * The caller must treat the string as a constant and not modify it 953 * in any way. 954 */ 955 JNIEXPORT const char * JNICALL 956 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 957 958 /* 959 * Returns the signature of the method referred to at a given constant pool 960 * index. 961 * 962 * The result is in UTF format and remains valid until JVM_ReleaseUTF 963 * is called. 964 * 965 * The caller must treat the string as a constant and not modify it 966 * in any way. 967 */ 968 JNIEXPORT const char * JNICALL 969 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 970 971 /* 972 * Returns the signature of the field referred to at a given constant pool 973 * index. 974 * 975 * The result is in UTF format and remains valid until JVM_ReleaseUTF 976 * is called. 977 * 978 * The caller must treat the string as a constant and not modify it 979 * in any way. 980 */ 981 JNIEXPORT const char * JNICALL 982 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 983 984 /* 985 * Returns the class name referred to at a given constant pool index. 986 * 987 * The result is in UTF format and remains valid until JVM_ReleaseUTF 988 * is called. 989 * 990 * The caller must treat the string as a constant and not modify it 991 * in any way. 992 */ 993 JNIEXPORT const char * JNICALL 994 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 995 996 /* 997 * Returns the class name referred to at a given constant pool index. 998 * 999 * The constant pool entry must refer to a CONSTANT_Fieldref. 1000 * 1001 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1002 * is called. 1003 * 1004 * The caller must treat the string as a constant and not modify it 1005 * in any way. 1006 */ 1007 JNIEXPORT const char * JNICALL 1008 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 1009 1010 /* 1011 * Returns the class name referred to at a given constant pool index. 1012 * 1013 * The constant pool entry must refer to CONSTANT_Methodref or 1014 * CONSTANT_InterfaceMethodref. 1015 * 1016 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1017 * is called. 1018 * 1019 * The caller must treat the string as a constant and not modify it 1020 * in any way. 1021 */ 1022 JNIEXPORT const char * JNICALL 1023 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1024 1025 /* 1026 * Returns the modifiers of a field in calledClass. The field is 1027 * referred to in class cb at constant pool entry index. 1028 * 1029 * The caller must treat the string as a constant and not modify it 1030 * in any way. 1031 * 1032 * Returns -1 if the field does not exist in calledClass. 1033 */ 1034 JNIEXPORT jint JNICALL 1035 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1036 1037 /* 1038 * Returns the modifiers of a method in calledClass. The method is 1039 * referred to in class cb at constant pool entry index. 1040 * 1041 * Returns -1 if the method does not exist in calledClass. 1042 */ 1043 JNIEXPORT jint JNICALL 1044 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1045 1046 /* 1047 * Releases the UTF string obtained from the VM. 1048 */ 1049 JNIEXPORT void JNICALL 1050 JVM_ReleaseUTF(const char *utf); 1051 1052 /* 1053 * Compare if two classes are in the same package. 1054 */ 1055 JNIEXPORT jboolean JNICALL 1056 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1057 1058 1059 /************************************************************************* 1060 PART 3: I/O and Network Support 1061 ************************************************************************/ 1062 1063 /* 1064 * Convert a pathname into native format. This function does syntactic 1065 * cleanup, such as removing redundant separator characters. It modifies 1066 * the given pathname string in place. 1067 */ 1068 JNIEXPORT char * JNICALL 1069 JVM_NativePath(char *); 1070 1071 JNIEXPORT void * JNICALL 1072 JVM_RawMonitorCreate(void); 1073 1074 JNIEXPORT void JNICALL 1075 JVM_RawMonitorDestroy(void *mon); 1076 1077 JNIEXPORT jint JNICALL 1078 JVM_RawMonitorEnter(void *mon); 1079 1080 JNIEXPORT void JNICALL 1081 JVM_RawMonitorExit(void *mon); 1082 1083 /* 1084 * java.lang.management support 1085 */ 1086 JNIEXPORT void* JNICALL 1087 JVM_GetManagement(jint version); 1088 1089 /* 1090 * com.sun.tools.attach.VirtualMachine support 1091 * 1092 * Initialize the agent properties with the properties maintained in the VM. 1093 */ 1094 JNIEXPORT jobject JNICALL 1095 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1096 1097 JNIEXPORT jstring JNICALL 1098 JVM_GetTemporaryDirectory(JNIEnv *env); 1099 1100 /* Generics reflection support. 1101 * 1102 * Returns information about the given class's EnclosingMethod 1103 * attribute, if present, or null if the class had no enclosing 1104 * method. 1105 * 1106 * If non-null, the returned array contains three elements. Element 0 1107 * is the java.lang.Class of which the enclosing method is a member, 1108 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1109 * method's name and descriptor, respectively. 1110 */ 1111 JNIEXPORT jobjectArray JNICALL 1112 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1113 1114 /* 1115 * Virtual thread support. 1116 */ 1117 JNIEXPORT void JNICALL 1118 JVM_VirtualThreadStart(JNIEnv* env, jobject vthread); 1119 1120 JNIEXPORT void JNICALL 1121 JVM_VirtualThreadEnd(JNIEnv* env, jobject vthread); 1122 1123 JNIEXPORT void JNICALL 1124 JVM_VirtualThreadMount(JNIEnv* env, jobject vthread, jboolean hide); 1125 1126 JNIEXPORT void JNICALL 1127 JVM_VirtualThreadUnmount(JNIEnv* env, jobject vthread, jboolean hide); 1128 1129 JNIEXPORT void JNICALL 1130 JVM_VirtualThreadDisableSuspend(JNIEnv* env, jclass clazz, jboolean enter); 1131 1132 JNIEXPORT void JNICALL 1133 JVM_VirtualThreadPinnedEvent(JNIEnv* env, jclass clazz, jstring op); 1134 1135 JNIEXPORT jobject JNICALL 1136 JVM_TakeVirtualThreadListToUnblock(JNIEnv* env, jclass ignored); 1137 1138 /* 1139 * Core reflection support. 1140 */ 1141 JNIEXPORT jint JNICALL 1142 JVM_GetClassFileVersion(JNIEnv *env, jclass current); 1143 1144 /* 1145 * Return JNI_TRUE if warnings are printed when agents are dynamically loaded. 1146 */ 1147 JNIEXPORT jboolean JNICALL 1148 JVM_PrintWarningAtDynamicAgentLoad(void); 1149 1150 /* 1151 * This structure is used by the launcher to get the default thread 1152 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1153 * version of 1.1. As it is not supported otherwise, it has been removed 1154 * from jni.h 1155 */ 1156 typedef struct JDK1_1InitArgs { 1157 jint version; 1158 1159 char **properties; 1160 jint checkSource; 1161 jint nativeStackSize; 1162 jint javaStackSize; 1163 jint minHeapSize; 1164 jint maxHeapSize; 1165 jint verifyMode; 1166 char *classpath; 1167 1168 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1169 void (JNICALL *exit)(jint code); 1170 void (JNICALL *abort)(void); 1171 1172 jint enableClassGC; 1173 jint enableVerboseGC; 1174 jint disableAsyncGC; 1175 jint verbose; 1176 jboolean debugging; 1177 jint debugPort; 1178 } JDK1_1InitArgs; 1179 1180 1181 #ifdef __cplusplus 1182 } /* extern "C" */ 1183 1184 #endif /* __cplusplus */ 1185 1186 #endif /* !_JAVASOFT_JVM_H_ */