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