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 jboolean JNICALL 154 JVM_IsContainerized(void); 155 156 JNIEXPORT void * JNICALL 157 JVM_LoadZipLibrary(); 158 159 JNIEXPORT void * JNICALL 160 JVM_LoadLibrary(const char *name, jboolean throwException); 161 162 JNIEXPORT void JNICALL 163 JVM_UnloadLibrary(void * handle); 164 165 JNIEXPORT void * JNICALL 166 JVM_FindLibraryEntry(void *handle, const char *name); 167 168 JNIEXPORT jboolean JNICALL 169 JVM_IsSupportedJNIVersion(jint version); 170 171 JNIEXPORT jobjectArray JNICALL 172 JVM_GetVmArguments(JNIEnv *env); 173 174 JNIEXPORT jboolean JNICALL 175 JVM_IsPreviewEnabled(void); 176 177 JNIEXPORT jboolean JNICALL 178 JVM_IsContinuationsSupported(void); 179 180 JNIEXPORT jboolean JNICALL 181 JVM_IsForeignLinkerSupported(void); 182 183 JNIEXPORT jboolean JNICALL 184 JVM_IsStaticallyLinked(void); 185 186 JNIEXPORT void JNICALL 187 JVM_InitializeFromArchive(JNIEnv* env, jclass cls); 188 189 JNIEXPORT void JNICALL 190 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller, 191 jstring interfaceMethodName, 192 jobject factoryType, 193 jobject interfaceMethodType, 194 jobject implementationMember, 195 jobject dynamicMethodType, 196 jclass lambdaProxyClass); 197 198 JNIEXPORT jclass JNICALL 199 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller, 200 jstring interfaceMethodName, 201 jobject factoryType, 202 jobject interfaceMethodType, 203 jobject implementationMember, 204 jobject dynamicMethodType); 205 206 JNIEXPORT jint JNICALL 207 JVM_GetCDSConfigStatus(); 208 209 JNIEXPORT jlong JNICALL 210 JVM_GetRandomSeedForDumping(); 211 212 JNIEXPORT void JNICALL 213 JVM_LogLambdaFormInvoker(JNIEnv* env, jstring line); 214 215 JNIEXPORT void JNICALL 216 JVM_DumpClassListToFile(JNIEnv* env, jstring fileName); 217 218 JNIEXPORT void JNICALL 219 JVM_DumpDynamicArchive(JNIEnv* env, jstring archiveName); 220 221 /* 222 * java.lang.Throwable 223 */ 224 JNIEXPORT void JNICALL 225 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 226 227 /* 228 * java.lang.StackTraceElement 229 */ 230 JNIEXPORT void JNICALL 231 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth); 232 233 JNIEXPORT void JNICALL 234 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo); 235 236 /* 237 * java.lang.NullPointerException 238 */ 239 240 JNIEXPORT jstring JNICALL 241 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable); 242 243 /* 244 * java.lang.StackWalker 245 */ 246 enum { 247 JVM_STACKWALK_CLASS_INFO_ONLY = 0x2, 248 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 249 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 250 }; 251 252 JNIEXPORT void JNICALL 253 JVM_ExpandStackFrameInfo(JNIEnv *env, jobject obj); 254 255 JNIEXPORT jobject JNICALL 256 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jint mode, 257 jint skip_frames, jobject contScope, jobject cont, 258 jint buffer_size, jint start_index, jobjectArray frames); 259 260 JNIEXPORT jint JNICALL 261 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jint mode, jlong anchor, 262 jint last_batch_count, jint buffer_size, jint start_index, 263 jobjectArray frames); 264 265 JNIEXPORT void JNICALL 266 JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont); 267 268 /* 269 * java.lang.Thread 270 */ 271 JNIEXPORT void JNICALL 272 JVM_StartThread(JNIEnv *env, jobject thread); 273 274 JNIEXPORT void JNICALL 275 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 276 277 JNIEXPORT void JNICALL 278 JVM_Yield(JNIEnv *env, jclass threadClass); 279 280 JNIEXPORT void JNICALL 281 JVM_SleepNanos(JNIEnv *env, jclass threadClass, jlong nanos); 282 283 JNIEXPORT jobject JNICALL 284 JVM_CurrentCarrierThread(JNIEnv *env, jclass threadClass); 285 286 JNIEXPORT jobject JNICALL 287 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 288 289 JNIEXPORT void JNICALL 290 JVM_SetCurrentThread(JNIEnv *env, jobject thisThread, jobject theThread); 291 292 JNIEXPORT void JNICALL 293 JVM_Interrupt(JNIEnv *env, jobject thread); 294 295 JNIEXPORT jboolean JNICALL 296 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 297 298 JNIEXPORT jobject JNICALL 299 JVM_GetStackTrace(JNIEnv *env, jobject thread); 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 NULL 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 jobject JNICALL 556 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 557 558 JNIEXPORT jboolean JNICALL 559 JVM_IsArrayClass(JNIEnv *env, jclass cls); 560 561 JNIEXPORT jboolean JNICALL 562 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 563 564 JNIEXPORT jboolean JNICALL 565 JVM_IsHiddenClass(JNIEnv *env, jclass cls); 566 567 JNIEXPORT jint JNICALL 568 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 569 570 JNIEXPORT jobjectArray JNICALL 571 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 572 573 JNIEXPORT jclass JNICALL 574 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 575 576 JNIEXPORT jstring JNICALL 577 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 578 579 /* Generics support (JDK 1.5) */ 580 JNIEXPORT jstring JNICALL 581 JVM_GetClassSignature(JNIEnv *env, jclass cls); 582 583 /* Annotations support (JDK 1.5) */ 584 JNIEXPORT jbyteArray JNICALL 585 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 586 587 /* Type use annotations support (JDK 1.8) */ 588 589 JNIEXPORT jbyteArray JNICALL 590 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 591 592 JNIEXPORT jbyteArray JNICALL 593 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 594 595 JNIEXPORT jbyteArray JNICALL 596 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 597 598 /* 599 * New (JDK 1.4) reflection implementation 600 */ 601 602 JNIEXPORT jobjectArray JNICALL 603 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 604 605 JNIEXPORT jobjectArray JNICALL 606 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 607 608 JNIEXPORT jobjectArray JNICALL 609 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 610 611 612 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 613 This returns the access flags for the class as specified in the 614 class file rather than searching the InnerClasses attribute (if 615 present) to find the source-level access flags. Only the values of 616 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 617 valid. */ 618 JNIEXPORT jint JNICALL 619 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 620 621 /* Nestmates - since JDK 11 */ 622 623 JNIEXPORT jboolean JNICALL 624 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member); 625 626 JNIEXPORT jclass JNICALL 627 JVM_GetNestHost(JNIEnv *env, jclass current); 628 629 JNIEXPORT jobjectArray JNICALL 630 JVM_GetNestMembers(JNIEnv *env, jclass current); 631 632 /* Records - since JDK 16 */ 633 634 JNIEXPORT jboolean JNICALL 635 JVM_IsRecord(JNIEnv *env, jclass cls); 636 637 JNIEXPORT jobjectArray JNICALL 638 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass); 639 640 /* Sealed classes - since JDK 17 */ 641 642 JNIEXPORT jobjectArray JNICALL 643 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current); 644 645 /* The following two reflection routines are still needed due to startup time issues */ 646 /* 647 * java.lang.reflect.Method 648 */ 649 JNIEXPORT jobject JNICALL 650 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 651 652 /* 653 * java.lang.reflect.Constructor 654 */ 655 JNIEXPORT jobject JNICALL 656 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 657 658 /* 659 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 660 */ 661 662 JNIEXPORT jobject JNICALL 663 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 664 665 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 666 (JNIEnv *env, jobject unused, jobject jcpool); 667 668 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 669 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 670 671 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 672 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 673 674 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 675 (JNIEnv *env, jobject obj, jobject unused, jint index); 676 677 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 678 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 679 680 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 681 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 682 683 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 684 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 685 686 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 687 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 688 689 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 690 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 691 692 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 693 (JNIEnv *env, jobject obj, jobject unused, jint index); 694 695 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 696 (JNIEnv *env, jobject obj, jobject unused, jint index); 697 698 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 699 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 700 701 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 702 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 703 704 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 705 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 706 707 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 708 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 709 710 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 711 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 712 713 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 714 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 715 716 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 717 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 718 719 /* 720 * Parameter reflection 721 */ 722 723 JNIEXPORT jobjectArray JNICALL 724 JVM_GetMethodParameters(JNIEnv *env, jobject method); 725 726 /* 727 * java.security.* 728 */ 729 730 JNIEXPORT jobject JNICALL 731 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 732 733 /* 734 * Ensure that code doing a stackwalk and using javaVFrame::locals() to 735 * get the value will see a materialized value and not a scalar-replaced 736 * null value. 737 */ 738 #define JVM_EnsureMaterializedForStackWalk(env, value) \ 739 do {} while(0) // Nothing to do. The fact that the value escaped 740 // through a native method is enough. 741 JNIEXPORT void JNICALL 742 JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value); 743 744 JNIEXPORT jobject JNICALL 745 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 746 747 /* 748 * Signal support, used to implement the shutdown sequence. Every VM must 749 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 750 * (^C) and the latter for external termination (kill, system shutdown, etc.). 751 * Other platform-dependent signal values may also be supported. 752 */ 753 754 JNIEXPORT void * JNICALL 755 JVM_RegisterSignal(jint sig, void *handler); 756 757 JNIEXPORT jboolean JNICALL 758 JVM_RaiseSignal(jint sig); 759 760 JNIEXPORT jint JNICALL 761 JVM_FindSignal(const char *name); 762 763 /* 764 * Retrieve the assertion directives for the specified class. 765 */ 766 JNIEXPORT jboolean JNICALL 767 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 768 769 /* 770 * Retrieve the assertion directives from the VM. 771 */ 772 JNIEXPORT jobject JNICALL 773 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 774 775 /* 776 * java.lang.ref.Finalizer 777 */ 778 JNIEXPORT void JNICALL 779 JVM_ReportFinalizationComplete(JNIEnv *env, jobject finalizee); 780 781 JNIEXPORT jboolean JNICALL 782 JVM_IsFinalizationEnabled(JNIEnv *env); 783 784 /************************************************************************* 785 PART 2: Support for the Verifier and Class File Format Checker 786 ************************************************************************/ 787 /* 788 * Return the class name in UTF format. The result is valid 789 * until JVM_ReleaseUTf is called. 790 * 791 * The caller must treat the string as a constant and not modify it 792 * in any way. 793 */ 794 JNIEXPORT const char * JNICALL 795 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 796 797 /* 798 * Returns the constant pool types in the buffer provided by "types." 799 */ 800 JNIEXPORT void JNICALL 801 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 802 803 /* 804 * Returns the number of Constant Pool entries. 805 */ 806 JNIEXPORT jint JNICALL 807 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 808 809 /* 810 * Returns the number of *declared* fields or methods. 811 */ 812 JNIEXPORT jint JNICALL 813 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 814 815 JNIEXPORT jint JNICALL 816 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 817 818 /* 819 * Returns the CP indexes of exceptions raised by 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_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 826 unsigned short *exceptions); 827 /* 828 * Returns the number of exceptions raised by a given method. 829 * The method is identified by method_index. 830 */ 831 JNIEXPORT jint JNICALL 832 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 833 834 /* 835 * Returns the byte code sequence of a given method. 836 * Places the result in the given buffer. 837 * 838 * The method is identified by method_index. 839 */ 840 JNIEXPORT void JNICALL 841 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 842 unsigned char *code); 843 844 /* 845 * Returns the length of the byte code sequence of a given method. 846 * The method is identified by method_index. 847 */ 848 JNIEXPORT jint JNICALL 849 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 850 851 /* 852 * A structure used to a capture exception table entry in a Java method. 853 */ 854 typedef struct { 855 jint start_pc; 856 jint end_pc; 857 jint handler_pc; 858 jint catchType; 859 } JVM_ExceptionTableEntryType; 860 861 /* 862 * Returns the exception table entry at entry_index of a given method. 863 * Places the result in the given buffer. 864 * 865 * The method is identified by method_index. 866 */ 867 JNIEXPORT void JNICALL 868 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 869 jint entry_index, 870 JVM_ExceptionTableEntryType *entry); 871 872 /* 873 * Returns the length of the exception table of a given method. 874 * The method is identified by method_index. 875 */ 876 JNIEXPORT jint JNICALL 877 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 878 879 /* 880 * Returns the modifiers of a given field. 881 * The field is identified by field_index. 882 */ 883 JNIEXPORT jint JNICALL 884 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 885 886 /* 887 * Returns the modifiers of a given method. 888 * The method is identified by method_index. 889 */ 890 JNIEXPORT jint JNICALL 891 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 892 893 /* 894 * Returns the number of local variables of a given method. 895 * The method is identified by method_index. 896 */ 897 JNIEXPORT jint JNICALL 898 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 899 900 /* 901 * Returns the number of arguments (including this pointer) of a given method. 902 * The method is identified by method_index. 903 */ 904 JNIEXPORT jint JNICALL 905 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 906 907 /* 908 * Returns the maximum amount of stack (in words) used by a given method. 909 * The method is identified by method_index. 910 */ 911 JNIEXPORT jint JNICALL 912 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 913 914 /* 915 * Is a given method a constructor. 916 * The method is identified by method_index. 917 */ 918 JNIEXPORT jboolean JNICALL 919 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 920 921 /* 922 * Is the given method generated by the VM. 923 * The method is identified by method_index. 924 */ 925 JNIEXPORT jboolean JNICALL 926 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 927 928 /* 929 * Returns the name of a given method in UTF format. 930 * The result remains valid until JVM_ReleaseUTF is called. 931 * 932 * The caller must treat the string as a constant and not modify it 933 * in any way. 934 */ 935 JNIEXPORT const char * JNICALL 936 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 937 938 /* 939 * Returns the signature of a given method in UTF format. 940 * The result remains valid until JVM_ReleaseUTF is called. 941 * 942 * The caller must treat the string as a constant and not modify it 943 * in any way. 944 */ 945 JNIEXPORT const char * JNICALL 946 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 947 948 /* 949 * Returns the name of the field referred to at a given constant pool 950 * index. 951 * 952 * The result is in UTF format and remains valid until JVM_ReleaseUTF 953 * is called. 954 * 955 * The caller must treat the string as a constant and not modify it 956 * in any way. 957 */ 958 JNIEXPORT const char * JNICALL 959 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 960 961 /* 962 * Returns the name of the method referred to at a given constant pool 963 * index. 964 * 965 * The result is in UTF format and remains valid until JVM_ReleaseUTF 966 * is called. 967 * 968 * The caller must treat the string as a constant and not modify it 969 * in any way. 970 */ 971 JNIEXPORT const char * JNICALL 972 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 973 974 /* 975 * Returns the signature of the method referred to at a given constant pool 976 * index. 977 * 978 * The result is in UTF format and remains valid until JVM_ReleaseUTF 979 * is called. 980 * 981 * The caller must treat the string as a constant and not modify it 982 * in any way. 983 */ 984 JNIEXPORT const char * JNICALL 985 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 986 987 /* 988 * Returns the signature of the field referred to at a given constant pool 989 * index. 990 * 991 * The result is in UTF format and remains valid until JVM_ReleaseUTF 992 * is called. 993 * 994 * The caller must treat the string as a constant and not modify it 995 * in any way. 996 */ 997 JNIEXPORT const char * JNICALL 998 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 999 1000 /* 1001 * Returns the class name referred to at a given constant pool 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_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 1011 1012 /* 1013 * Returns the class name referred to at a given constant pool index. 1014 * 1015 * The constant pool entry must refer to a CONSTANT_Fieldref. 1016 * 1017 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1018 * is called. 1019 * 1020 * The caller must treat the string as a constant and not modify it 1021 * in any way. 1022 */ 1023 JNIEXPORT const char * JNICALL 1024 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 1025 1026 /* 1027 * Returns the class name referred to at a given constant pool index. 1028 * 1029 * The constant pool entry must refer to CONSTANT_Methodref or 1030 * CONSTANT_InterfaceMethodref. 1031 * 1032 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1033 * is called. 1034 * 1035 * The caller must treat the string as a constant and not modify it 1036 * in any way. 1037 */ 1038 JNIEXPORT const char * JNICALL 1039 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1040 1041 /* 1042 * Returns the modifiers of a field in calledClass. The field is 1043 * referred to in class cb at constant pool entry index. 1044 * 1045 * The caller must treat the string as a constant and not modify it 1046 * in any way. 1047 * 1048 * Returns -1 if the field does not exist in calledClass. 1049 */ 1050 JNIEXPORT jint JNICALL 1051 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1052 1053 /* 1054 * Returns the modifiers of a method in calledClass. The method is 1055 * referred to in class cb at constant pool entry index. 1056 * 1057 * Returns -1 if the method does not exist in calledClass. 1058 */ 1059 JNIEXPORT jint JNICALL 1060 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1061 1062 /* 1063 * Releases the UTF string obtained from the VM. 1064 */ 1065 JNIEXPORT void JNICALL 1066 JVM_ReleaseUTF(const char *utf); 1067 1068 /* 1069 * Compare if two classes are in the same package. 1070 */ 1071 JNIEXPORT jboolean JNICALL 1072 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1073 1074 1075 /************************************************************************* 1076 PART 3: I/O and Network Support 1077 ************************************************************************/ 1078 1079 /* 1080 * Convert a pathname into native format. This function does syntactic 1081 * cleanup, such as removing redundant separator characters. It modifies 1082 * the given pathname string in place. 1083 */ 1084 JNIEXPORT char * JNICALL 1085 JVM_NativePath(char *); 1086 1087 JNIEXPORT void * JNICALL 1088 JVM_RawMonitorCreate(void); 1089 1090 JNIEXPORT void JNICALL 1091 JVM_RawMonitorDestroy(void *mon); 1092 1093 JNIEXPORT jint JNICALL 1094 JVM_RawMonitorEnter(void *mon); 1095 1096 JNIEXPORT void JNICALL 1097 JVM_RawMonitorExit(void *mon); 1098 1099 /* 1100 * java.lang.management support 1101 */ 1102 JNIEXPORT void* JNICALL 1103 JVM_GetManagement(jint version); 1104 1105 /* 1106 * com.sun.tools.attach.VirtualMachine support 1107 * 1108 * Initialize the agent properties with the properties maintained in the VM. 1109 */ 1110 JNIEXPORT jobject JNICALL 1111 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1112 1113 JNIEXPORT jstring JNICALL 1114 JVM_GetTemporaryDirectory(JNIEnv *env); 1115 1116 /* Generics reflection support. 1117 * 1118 * Returns information about the given class's EnclosingMethod 1119 * attribute, if present, or null if the class had no enclosing 1120 * method. 1121 * 1122 * If non-null, the returned array contains three elements. Element 0 1123 * is the java.lang.Class of which the enclosing method is a member, 1124 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1125 * method's name and descriptor, respectively. 1126 */ 1127 JNIEXPORT jobjectArray JNICALL 1128 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1129 1130 /* 1131 * Virtual thread support. 1132 */ 1133 JNIEXPORT void JNICALL 1134 JVM_VirtualThreadStart(JNIEnv* env, jobject vthread); 1135 1136 JNIEXPORT void JNICALL 1137 JVM_VirtualThreadEnd(JNIEnv* env, jobject vthread); 1138 1139 JNIEXPORT void JNICALL 1140 JVM_VirtualThreadMount(JNIEnv* env, jobject vthread, jboolean hide); 1141 1142 JNIEXPORT void JNICALL 1143 JVM_VirtualThreadUnmount(JNIEnv* env, jobject vthread, jboolean hide); 1144 1145 JNIEXPORT void JNICALL 1146 JVM_VirtualThreadHideFrames(JNIEnv* env, jclass clazz, jboolean hide); 1147 1148 JNIEXPORT void JNICALL 1149 JVM_VirtualThreadDisableSuspend(JNIEnv* env, jclass clazz, jboolean enter); 1150 1151 JNIEXPORT void JNICALL 1152 JVM_VirtualThreadPinnedStart(JNIEnv* env, jclass clazz); 1153 1154 JNIEXPORT void JNICALL 1155 JVM_VirtualThreadPinnedEnd(JNIEnv* env, jclass clazz, jstring reason); 1156 1157 JNIEXPORT jobject JNICALL 1158 JVM_TakeVirtualThreadListToUnblock(JNIEnv* env, jclass ignored); 1159 1160 /* 1161 * Core reflection support. 1162 */ 1163 JNIEXPORT jint JNICALL 1164 JVM_GetClassFileVersion(JNIEnv *env, jclass current); 1165 1166 /* 1167 * Return JNI_TRUE if warnings are printed when agents are dynamically loaded. 1168 */ 1169 JNIEXPORT jboolean JNICALL 1170 JVM_PrintWarningAtDynamicAgentLoad(void); 1171 1172 /* 1173 * This structure is used by the launcher to get the default thread 1174 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1175 * version of 1.1. As it is not supported otherwise, it has been removed 1176 * from jni.h 1177 */ 1178 typedef struct JDK1_1InitArgs { 1179 jint version; 1180 1181 char **properties; 1182 jint checkSource; 1183 jint nativeStackSize; 1184 jint javaStackSize; 1185 jint minHeapSize; 1186 jint maxHeapSize; 1187 jint verifyMode; 1188 char *classpath; 1189 1190 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1191 void (JNICALL *exit)(jint code); 1192 void (JNICALL *abort)(void); 1193 1194 jint enableClassGC; 1195 jint enableVerboseGC; 1196 jint disableAsyncGC; 1197 jint verbose; 1198 jboolean debugging; 1199 jint debugPort; 1200 } JDK1_1InitArgs; 1201 1202 1203 #ifdef __cplusplus 1204 } /* extern "C" */ 1205 1206 #endif /* __cplusplus */ 1207 1208 #endif /* !_JAVASOFT_JVM_H_ */