1 /* 2 * Copyright (c) 1997, 2020, 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 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* 39 * This file contains additional functions exported from the VM. 40 * These functions are complementary to the standard JNI support. 41 * There are three parts to this file: 42 * 43 * First, this file contains the VM-related functions needed by native 44 * libraries in the standard Java API. For example, the java.lang.Object 45 * class needs VM-level functions that wait for and notify monitors. 46 * 47 * Second, this file contains the functions and constant definitions 48 * needed by the byte code verifier and class file format checker. 49 * These functions allow the verifier and format checker to be written 50 * in a VM-independent way. 51 * 52 * Third, this file contains various I/O and network operations needed 53 * by the standard Java I/O and network APIs. 54 */ 55 56 /* 57 * Bump the version number when either of the following happens: 58 * 59 * 1. There is a change in JVM_* functions. 60 * 61 * 2. There is a change in the contract between VM and Java classes. 62 * For example, if the VM relies on a new private field in Thread 63 * class. 64 */ 65 66 #define JVM_INTERFACE_VERSION 6 67 68 JNIEXPORT jint JNICALL 69 JVM_GetInterfaceVersion(void); 70 71 /************************************************************************* 72 PART 1: Functions for Native Libraries 73 ************************************************************************/ 74 /* 75 * java.lang.Object 76 */ 77 JNIEXPORT jint JNICALL 78 JVM_IHashCode(JNIEnv *env, jobject obj); 79 80 JNIEXPORT void JNICALL 81 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms); 82 83 JNIEXPORT void JNICALL 84 JVM_MonitorNotify(JNIEnv *env, jobject obj); 85 86 JNIEXPORT void JNICALL 87 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj); 88 89 JNIEXPORT jobject JNICALL 90 JVM_Clone(JNIEnv *env, jobject obj); 91 92 /* 93 * java.lang.String 94 */ 95 JNIEXPORT jstring JNICALL 96 JVM_InternString(JNIEnv *env, jstring str); 97 98 /* 99 * java.lang.System 100 */ 101 JNIEXPORT jlong JNICALL 102 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored); 103 104 JNIEXPORT jlong JNICALL 105 JVM_NanoTime(JNIEnv *env, jclass ignored); 106 107 JNIEXPORT jlong JNICALL 108 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs); 109 110 JNIEXPORT void JNICALL 111 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, 112 jobject dst, jint dst_pos, jint length); 113 114 /* 115 * Return an array of all properties as alternating name and value pairs. 116 */ 117 JNIEXPORT jobjectArray JNICALL 118 JVM_GetProperties(JNIEnv *env); 119 120 /* 121 * java.lang.Runtime 122 */ 123 JNIEXPORT void JNICALL 124 JVM_BeforeHalt(); 125 126 JNIEXPORT void JNICALL 127 JVM_Halt(jint code); 128 129 JNIEXPORT void JNICALL 130 JVM_GC(void); 131 132 /* Returns the number of real-time milliseconds that have elapsed since the 133 * least-recently-inspected heap object was last inspected by the garbage 134 * collector. 135 * 136 * For simple stop-the-world collectors this value is just the time 137 * since the most recent collection. For generational collectors it is the 138 * time since the oldest generation was most recently collected. Other 139 * collectors are free to return a pessimistic estimate of the elapsed time, or 140 * simply the time since the last full collection was performed. 141 * 142 * Note that in the presence of reference objects, a given object that is no 143 * longer strongly reachable may have to be inspected multiple times before it 144 * can be reclaimed. 145 */ 146 JNIEXPORT jlong JNICALL 147 JVM_MaxObjectInspectionAge(void); 148 149 JNIEXPORT jlong JNICALL 150 JVM_TotalMemory(void); 151 152 JNIEXPORT jlong JNICALL 153 JVM_FreeMemory(void); 154 155 JNIEXPORT jlong JNICALL 156 JVM_MaxMemory(void); 157 158 JNIEXPORT jint JNICALL 159 JVM_ActiveProcessorCount(void); 160 161 JNIEXPORT jboolean JNICALL 162 JVM_IsUseContainerSupport(void); 163 164 JNIEXPORT void * JNICALL 165 JVM_LoadLibrary(const char *name); 166 167 JNIEXPORT void JNICALL 168 JVM_UnloadLibrary(void * handle); 169 170 JNIEXPORT void * JNICALL 171 JVM_FindLibraryEntry(void *handle, const char *name); 172 173 JNIEXPORT jboolean JNICALL 174 JVM_IsSupportedJNIVersion(jint version); 175 176 JNIEXPORT jobjectArray JNICALL 177 JVM_GetVmArguments(JNIEnv *env); 178 179 JNIEXPORT void JNICALL 180 JVM_InitializeFromArchive(JNIEnv* env, jclass cls); 181 182 JNIEXPORT void JNICALL 183 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller, 184 jstring invokedName, 185 jobject invokedType, 186 jobject methodType, 187 jobject implMethodMember, 188 jobject instantiatedMethodType, 189 jclass lambdaProxyClass); 190 191 JNIEXPORT jclass JNICALL 192 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller, 193 jstring invokedName, 194 jobject invokedType, 195 jobject methodType, 196 jobject implMethodMember, 197 jobject instantiatedMethodType, 198 jboolean initialize); 199 200 JNIEXPORT jboolean JNICALL 201 JVM_IsCDSDumpingEnabled(JNIEnv* env); 202 203 JNIEXPORT jboolean JNICALL 204 JVM_IsCDSSharingEnabled(JNIEnv* env); 205 206 JNIEXPORT jlong JNICALL 207 JVM_GetRandomSeedForCDSDump(); 208 209 /* 210 * java.lang.Throwable 211 */ 212 JNIEXPORT void JNICALL 213 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 214 215 /* 216 * java.lang.StackTraceElement 217 */ 218 JNIEXPORT void JNICALL 219 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable); 220 221 JNIEXPORT void JNICALL 222 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo); 223 224 /* 225 * java.lang.NullPointerException 226 */ 227 228 JNIEXPORT jstring JNICALL 229 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable); 230 231 /* 232 * java.lang.StackWalker 233 */ 234 enum { 235 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2, 236 JVM_STACKWALK_GET_CALLER_CLASS = 0x04, 237 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 238 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 239 }; 240 241 JNIEXPORT jobject JNICALL 242 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode, 243 jint skip_frames, jint frame_count, jint start_index, 244 jobjectArray frames); 245 246 JNIEXPORT jint JNICALL 247 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor, 248 jint frame_count, jint start_index, 249 jobjectArray frames); 250 251 /* 252 * java.lang.Thread 253 */ 254 JNIEXPORT void JNICALL 255 JVM_StartThread(JNIEnv *env, jobject thread); 256 257 JNIEXPORT void JNICALL 258 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 259 260 JNIEXPORT jboolean JNICALL 261 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 262 263 JNIEXPORT void JNICALL 264 JVM_SuspendThread(JNIEnv *env, jobject thread); 265 266 JNIEXPORT void JNICALL 267 JVM_ResumeThread(JNIEnv *env, jobject thread); 268 269 JNIEXPORT void JNICALL 270 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 271 272 JNIEXPORT void JNICALL 273 JVM_Yield(JNIEnv *env, jclass threadClass); 274 275 JNIEXPORT void JNICALL 276 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 277 278 JNIEXPORT jobject JNICALL 279 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 280 281 JNIEXPORT void JNICALL 282 JVM_Interrupt(JNIEnv *env, jobject thread); 283 284 JNIEXPORT jboolean JNICALL 285 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 286 287 JNIEXPORT void JNICALL 288 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 289 290 JNIEXPORT jobjectArray JNICALL 291 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 292 293 JNIEXPORT void JNICALL 294 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 295 296 /* getStackTrace() and getAllStackTraces() method */ 297 JNIEXPORT jobjectArray JNICALL 298 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 299 300 /* 301 * java.lang.SecurityManager 302 */ 303 JNIEXPORT jobjectArray JNICALL 304 JVM_GetClassContext(JNIEnv *env); 305 306 /* 307 * java.lang.Package 308 */ 309 JNIEXPORT jstring JNICALL 310 JVM_GetSystemPackage(JNIEnv *env, jstring name); 311 312 JNIEXPORT jobjectArray JNICALL 313 JVM_GetSystemPackages(JNIEnv *env); 314 315 /* 316 * java.lang.ref.Reference 317 */ 318 JNIEXPORT jobject JNICALL 319 JVM_GetAndClearReferencePendingList(JNIEnv *env); 320 321 JNIEXPORT jboolean JNICALL 322 JVM_HasReferencePendingList(JNIEnv *env); 323 324 JNIEXPORT void JNICALL 325 JVM_WaitForReferencePendingList(JNIEnv *env); 326 327 /* 328 * java.io.ObjectInputStream 329 */ 330 JNIEXPORT jobject JNICALL 331 JVM_LatestUserDefinedLoader(JNIEnv *env); 332 333 /* 334 * java.lang.reflect.Array 335 */ 336 JNIEXPORT jint JNICALL 337 JVM_GetArrayLength(JNIEnv *env, jobject arr); 338 339 JNIEXPORT jobject JNICALL 340 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 341 342 JNIEXPORT jvalue JNICALL 343 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 344 345 JNIEXPORT void JNICALL 346 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 347 348 JNIEXPORT void JNICALL 349 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 350 unsigned char vCode); 351 352 JNIEXPORT jobject JNICALL 353 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 354 355 JNIEXPORT jobject JNICALL 356 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 357 358 359 /* 360 * Returns the immediate caller class of the native method invoking 361 * JVM_GetCallerClass. The Method.invoke and other frames due to 362 * reflection machinery are skipped. 363 * 364 * The caller is expected to be marked with 365 * jdk.internal.reflect.CallerSensitive. The JVM will throw an 366 * error if it is not marked properly. 367 */ 368 JNIEXPORT jclass JNICALL 369 JVM_GetCallerClass(JNIEnv *env); 370 371 372 /* 373 * Find primitive classes 374 * utf: class name 375 */ 376 JNIEXPORT jclass JNICALL 377 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 378 379 380 /* 381 * Find a class from a boot class loader. Returns NULL if class not found. 382 */ 383 JNIEXPORT jclass JNICALL 384 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 385 386 /* 387 * Find a class from a given class loader. Throws ClassNotFoundException. 388 * name: name of class 389 * init: whether initialization is done 390 * loader: class loader to look up the class. This may not be the same as the caller's 391 * class loader. 392 * caller: initiating class. The initiating class may be null when a security 393 * manager is not installed. 394 */ 395 JNIEXPORT jclass JNICALL 396 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 397 jobject loader, jclass caller); 398 399 /* 400 * Find a class from a given class. 401 */ 402 JNIEXPORT jclass JNICALL 403 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 404 jclass from); 405 406 /* Find a loaded class cached by the VM */ 407 JNIEXPORT jclass JNICALL 408 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 409 410 /* Define a class */ 411 JNIEXPORT jclass JNICALL 412 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 413 jsize len, jobject pd); 414 415 /* Define a class with a source (added in JDK1.5) */ 416 JNIEXPORT jclass JNICALL 417 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 418 const jbyte *buf, jsize len, jobject pd, 419 const char *source); 420 421 /* 422 * Define a class with the specified lookup class. 423 * lookup: Lookup class 424 * name: the name of the class 425 * buf: class bytes 426 * len: length of class bytes 427 * pd: protection domain 428 * init: initialize the class 429 * flags: properties of the class 430 * classData: private static pre-initialized field; may be null 431 */ 432 JNIEXPORT jclass JNICALL 433 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf, 434 jsize len, jobject pd, jboolean init, int flags, jobject classData); 435 436 /* 437 * Module support funcions 438 */ 439 440 /* 441 * Define a module with the specified packages and bind the module to the 442 * given class loader. 443 * module: module to define 444 * is_open: specifies if module is open (currently ignored) 445 * version: the module version 446 * location: the module location 447 * packages: array of packages in the module 448 */ 449 JNIEXPORT void JNICALL 450 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version, 451 jstring location, jobjectArray packages); 452 453 /* 454 * Set the boot loader's unnamed module. 455 * module: boot loader's unnamed module 456 */ 457 JNIEXPORT void JNICALL 458 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module); 459 460 /* 461 * Do a qualified export of a package. 462 * from_module: module containing the package to export 463 * package: name of the package to export 464 * to_module: module to export the package to 465 */ 466 JNIEXPORT void JNICALL 467 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module); 468 469 /* 470 * Do an export of a package to all unnamed modules. 471 * from_module: module containing the package to export 472 * package: name of the package to export to all unnamed modules 473 */ 474 JNIEXPORT void JNICALL 475 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package); 476 477 /* 478 * Do an unqualified export of a package. 479 * from_module: module containing the package to export 480 * package: name of the package to export 481 */ 482 JNIEXPORT void JNICALL 483 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package); 484 485 /* 486 * Add a module to the list of modules that a given module can read. 487 * from_module: module requesting read access 488 * source_module: module that from_module wants to read 489 */ 490 JNIEXPORT void JNICALL 491 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module); 492 493 /* 494 * Define all modules that have been stored in the CDS archived heap. 495 * platform_loader: the built-in platform class loader 496 * system_loader: the built-in system class loader 497 */ 498 JNIEXPORT void JNICALL 499 JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader); 500 501 /* 502 * Reflection support functions 503 */ 504 505 JNIEXPORT jstring JNICALL 506 JVM_InitClassName(JNIEnv *env, jclass cls); 507 508 JNIEXPORT jobjectArray JNICALL 509 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 510 511 JNIEXPORT jboolean JNICALL 512 JVM_IsInterface(JNIEnv *env, jclass cls); 513 514 JNIEXPORT jobjectArray JNICALL 515 JVM_GetClassSigners(JNIEnv *env, jclass cls); 516 517 JNIEXPORT void JNICALL 518 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 519 520 JNIEXPORT jobject JNICALL 521 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 522 523 JNIEXPORT jboolean JNICALL 524 JVM_IsArrayClass(JNIEnv *env, jclass cls); 525 526 JNIEXPORT jboolean JNICALL 527 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 528 529 JNIEXPORT jboolean JNICALL 530 JVM_IsHiddenClass(JNIEnv *env, jclass cls); 531 532 JNIEXPORT jint JNICALL 533 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 534 535 JNIEXPORT jobjectArray JNICALL 536 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 537 538 JNIEXPORT jclass JNICALL 539 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 540 541 JNIEXPORT jstring JNICALL 542 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 543 544 /* Generics support (JDK 1.5) */ 545 JNIEXPORT jstring JNICALL 546 JVM_GetClassSignature(JNIEnv *env, jclass cls); 547 548 /* Annotations support (JDK 1.5) */ 549 JNIEXPORT jbyteArray JNICALL 550 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 551 552 /* Type use annotations support (JDK 1.8) */ 553 554 JNIEXPORT jbyteArray JNICALL 555 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 556 557 JNIEXPORT jbyteArray JNICALL 558 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 559 560 JNIEXPORT jbyteArray JNICALL 561 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 562 563 /* 564 * New (JDK 1.4) reflection implementation 565 */ 566 567 JNIEXPORT jobjectArray JNICALL 568 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 569 570 JNIEXPORT jobjectArray JNICALL 571 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 572 573 JNIEXPORT jobjectArray JNICALL 574 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 575 576 577 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 578 This returns the access flags for the class as specified in the 579 class file rather than searching the InnerClasses attribute (if 580 present) to find the source-level access flags. Only the values of 581 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 582 valid. */ 583 JNIEXPORT jint JNICALL 584 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 585 586 /* Nestmates - since JDK 11 */ 587 588 JNIEXPORT jboolean JNICALL 589 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member); 590 591 JNIEXPORT jclass JNICALL 592 JVM_GetNestHost(JNIEnv *env, jclass current); 593 594 JNIEXPORT jobjectArray JNICALL 595 JVM_GetNestMembers(JNIEnv *env, jclass current); 596 597 /* Records - since JDK 14 */ 598 599 JNIEXPORT jboolean JNICALL 600 JVM_IsRecord(JNIEnv *env, jclass cls); 601 602 JNIEXPORT jobjectArray JNICALL 603 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass); 604 605 /* Sealed types - since JDK 15 */ 606 607 JNIEXPORT jobjectArray JNICALL 608 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current); 609 610 /* The following two reflection routines are still needed due to startup time issues */ 611 /* 612 * java.lang.reflect.Method 613 */ 614 JNIEXPORT jobject JNICALL 615 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 616 617 /* 618 * java.lang.reflect.Constructor 619 */ 620 JNIEXPORT jobject JNICALL 621 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 622 623 /* 624 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 625 */ 626 627 JNIEXPORT jobject JNICALL 628 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 629 630 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 631 (JNIEnv *env, jobject unused, jobject jcpool); 632 633 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 634 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 635 636 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 637 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 638 639 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 640 (JNIEnv *env, jobject obj, jobject unused, jint index); 641 642 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 643 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 644 645 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 646 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 647 648 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 649 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 650 651 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 652 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 653 654 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 655 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 656 657 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 658 (JNIEnv *env, jobject obj, jobject unused, jint index); 659 660 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 661 (JNIEnv *env, jobject obj, jobject unused, jint index); 662 663 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 664 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 665 666 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 667 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 668 669 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 670 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 671 672 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 673 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 674 675 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 676 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 677 678 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 679 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 680 681 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 682 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 683 684 /* 685 * Parameter reflection 686 */ 687 688 JNIEXPORT jobjectArray JNICALL 689 JVM_GetMethodParameters(JNIEnv *env, jobject method); 690 691 /* 692 * java.security.* 693 */ 694 695 JNIEXPORT jobject JNICALL 696 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 697 698 /* 699 * Ensure that code doing a stackwalk and using javaVFrame::locals() to 700 * get the value will see a materialized value and not a scalar-replaced 701 * null value. 702 */ 703 #define JVM_EnsureMaterializedForStackWalk(env, value) \ 704 do {} while(0) // Nothing to do. The fact that the value escaped 705 // through a native method is enough. 706 707 JNIEXPORT jobject JNICALL 708 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 709 710 /* 711 * Signal support, used to implement the shutdown sequence. Every VM must 712 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 713 * (^C) and the latter for external termination (kill, system shutdown, etc.). 714 * Other platform-dependent signal values may also be supported. 715 */ 716 717 JNIEXPORT void * JNICALL 718 JVM_RegisterSignal(jint sig, void *handler); 719 720 JNIEXPORT jboolean JNICALL 721 JVM_RaiseSignal(jint sig); 722 723 JNIEXPORT jint JNICALL 724 JVM_FindSignal(const char *name); 725 726 /* 727 * Retrieve the assertion directives for the specified class. 728 */ 729 JNIEXPORT jboolean JNICALL 730 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 731 732 /* 733 * Retrieve the assertion directives from the VM. 734 */ 735 JNIEXPORT jobject JNICALL 736 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 737 738 /* 739 * java.util.concurrent.atomic.AtomicLong 740 */ 741 JNIEXPORT jboolean JNICALL 742 JVM_SupportsCX8(void); 743 744 /* 745 * com.sun.dtrace.jsdt support 746 */ 747 748 #define JVM_TRACING_DTRACE_VERSION 1 749 750 /* 751 * Structure to pass one probe description to JVM 752 */ 753 typedef struct { 754 jmethodID method; 755 jstring function; 756 jstring name; 757 void* reserved[4]; // for future use 758 } JVM_DTraceProbe; 759 760 /** 761 * Encapsulates the stability ratings for a DTrace provider field 762 */ 763 typedef struct { 764 jint nameStability; 765 jint dataStability; 766 jint dependencyClass; 767 } JVM_DTraceInterfaceAttributes; 768 769 /* 770 * Structure to pass one provider description to JVM 771 */ 772 typedef struct { 773 jstring name; 774 JVM_DTraceProbe* probes; 775 jint probe_count; 776 JVM_DTraceInterfaceAttributes providerAttributes; 777 JVM_DTraceInterfaceAttributes moduleAttributes; 778 JVM_DTraceInterfaceAttributes functionAttributes; 779 JVM_DTraceInterfaceAttributes nameAttributes; 780 JVM_DTraceInterfaceAttributes argsAttributes; 781 void* reserved[4]; // for future use 782 } JVM_DTraceProvider; 783 784 /* 785 * Get the version number the JVM was built with 786 */ 787 JNIEXPORT jint JNICALL 788 JVM_DTraceGetVersion(JNIEnv* env); 789 790 /* 791 * Register new probe with given signature, return global handle 792 * 793 * The version passed in is the version that the library code was 794 * built with. 795 */ 796 JNIEXPORT jlong JNICALL 797 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 798 jint providers_count, JVM_DTraceProvider* providers); 799 800 /* 801 * Check JSDT probe 802 */ 803 JNIEXPORT jboolean JNICALL 804 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 805 806 /* 807 * Destroy custom DOF 808 */ 809 JNIEXPORT void JNICALL 810 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle); 811 812 /* 813 * Check to see if DTrace is supported by OS 814 */ 815 JNIEXPORT jboolean JNICALL 816 JVM_DTraceIsSupported(JNIEnv* env); 817 818 /************************************************************************* 819 PART 2: Support for the Verifier and Class File Format Checker 820 ************************************************************************/ 821 /* 822 * Return the class name in UTF format. The result is valid 823 * until JVM_ReleaseUTf is called. 824 * 825 * The caller must treat the string as a constant and not modify it 826 * in any way. 827 */ 828 JNIEXPORT const char * JNICALL 829 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 830 831 /* 832 * Returns the constant pool types in the buffer provided by "types." 833 */ 834 JNIEXPORT void JNICALL 835 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 836 837 /* 838 * Returns the number of Constant Pool entries. 839 */ 840 JNIEXPORT jint JNICALL 841 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 842 843 /* 844 * Returns the number of *declared* fields or methods. 845 */ 846 JNIEXPORT jint JNICALL 847 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 848 849 JNIEXPORT jint JNICALL 850 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 851 852 /* 853 * Returns the CP indexes of exceptions raised by a given method. 854 * Places the result in the given buffer. 855 * 856 * The method is identified by method_index. 857 */ 858 JNIEXPORT void JNICALL 859 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 860 unsigned short *exceptions); 861 /* 862 * Returns the number of exceptions raised by a given method. 863 * The method is identified by method_index. 864 */ 865 JNIEXPORT jint JNICALL 866 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 867 868 /* 869 * Returns the byte code sequence of a given method. 870 * Places the result in the given buffer. 871 * 872 * The method is identified by method_index. 873 */ 874 JNIEXPORT void JNICALL 875 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 876 unsigned char *code); 877 878 /* 879 * Returns the length of the byte code sequence of a given method. 880 * The method is identified by method_index. 881 */ 882 JNIEXPORT jint JNICALL 883 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 884 885 /* 886 * A structure used to a capture exception table entry in a Java method. 887 */ 888 typedef struct { 889 jint start_pc; 890 jint end_pc; 891 jint handler_pc; 892 jint catchType; 893 } JVM_ExceptionTableEntryType; 894 895 /* 896 * Returns the exception table entry at entry_index of a given method. 897 * Places the result in the given buffer. 898 * 899 * The method is identified by method_index. 900 */ 901 JNIEXPORT void JNICALL 902 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 903 jint entry_index, 904 JVM_ExceptionTableEntryType *entry); 905 906 /* 907 * Returns the length of the exception table of a given method. 908 * The method is identified by method_index. 909 */ 910 JNIEXPORT jint JNICALL 911 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 912 913 /* 914 * Returns the modifiers of a given field. 915 * The field is identified by field_index. 916 */ 917 JNIEXPORT jint JNICALL 918 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 919 920 /* 921 * Returns the modifiers of a given method. 922 * The method is identified by method_index. 923 */ 924 JNIEXPORT jint JNICALL 925 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 926 927 /* 928 * Returns the number of local variables of a given method. 929 * The method is identified by method_index. 930 */ 931 JNIEXPORT jint JNICALL 932 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 933 934 /* 935 * Returns the number of arguments (including this pointer) of a given method. 936 * The method is identified by method_index. 937 */ 938 JNIEXPORT jint JNICALL 939 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 940 941 /* 942 * Returns the maximum amount of stack (in words) used by a given method. 943 * The method is identified by method_index. 944 */ 945 JNIEXPORT jint JNICALL 946 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 947 948 /* 949 * Is a given method a constructor. 950 * The method is identified by method_index. 951 */ 952 JNIEXPORT jboolean JNICALL 953 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 954 955 /* 956 * Is the given method generated by the VM. 957 * The method is identified by method_index. 958 */ 959 JNIEXPORT jboolean JNICALL 960 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 961 962 /* 963 * Returns the name of a given method in UTF format. 964 * The result remains valid until JVM_ReleaseUTF is called. 965 * 966 * The caller must treat the string as a constant and not modify it 967 * in any way. 968 */ 969 JNIEXPORT const char * JNICALL 970 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 971 972 /* 973 * Returns the signature of a given method in UTF format. 974 * The result remains valid until JVM_ReleaseUTF is called. 975 * 976 * The caller must treat the string as a constant and not modify it 977 * in any way. 978 */ 979 JNIEXPORT const char * JNICALL 980 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 981 982 /* 983 * Returns the name of the field referred to at a given constant pool 984 * index. 985 * 986 * The result is in UTF format and remains valid until JVM_ReleaseUTF 987 * is called. 988 * 989 * The caller must treat the string as a constant and not modify it 990 * in any way. 991 */ 992 JNIEXPORT const char * JNICALL 993 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 994 995 /* 996 * Returns the name of the method referred to at a given constant pool 997 * index. 998 * 999 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1000 * is called. 1001 * 1002 * The caller must treat the string as a constant and not modify it 1003 * in any way. 1004 */ 1005 JNIEXPORT const char * JNICALL 1006 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 1007 1008 /* 1009 * Returns the signature of the method referred to at a given constant pool 1010 * index. 1011 * 1012 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1013 * is called. 1014 * 1015 * The caller must treat the string as a constant and not modify it 1016 * in any way. 1017 */ 1018 JNIEXPORT const char * JNICALL 1019 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 1020 1021 /* 1022 * Returns the signature of the field referred to at a given constant pool 1023 * index. 1024 * 1025 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1026 * is called. 1027 * 1028 * The caller must treat the string as a constant and not modify it 1029 * in any way. 1030 */ 1031 JNIEXPORT const char * JNICALL 1032 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 1033 1034 /* 1035 * Returns the class name referred to at a given constant pool index. 1036 * 1037 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1038 * is called. 1039 * 1040 * The caller must treat the string as a constant and not modify it 1041 * in any way. 1042 */ 1043 JNIEXPORT const char * JNICALL 1044 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 1045 1046 /* 1047 * Returns the class name referred to at a given constant pool index. 1048 * 1049 * The constant pool entry must refer to a CONSTANT_Fieldref. 1050 * 1051 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1052 * is called. 1053 * 1054 * The caller must treat the string as a constant and not modify it 1055 * in any way. 1056 */ 1057 JNIEXPORT const char * JNICALL 1058 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 1059 1060 /* 1061 * Returns the class name referred to at a given constant pool index. 1062 * 1063 * The constant pool entry must refer to CONSTANT_Methodref or 1064 * CONSTANT_InterfaceMethodref. 1065 * 1066 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1067 * is called. 1068 * 1069 * The caller must treat the string as a constant and not modify it 1070 * in any way. 1071 */ 1072 JNIEXPORT const char * JNICALL 1073 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1074 1075 /* 1076 * Returns the modifiers of a field in calledClass. The field is 1077 * referred to in class cb at constant pool entry index. 1078 * 1079 * The caller must treat the string as a constant and not modify it 1080 * in any way. 1081 * 1082 * Returns -1 if the field does not exist in calledClass. 1083 */ 1084 JNIEXPORT jint JNICALL 1085 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1086 1087 /* 1088 * Returns the modifiers of a method in calledClass. The method is 1089 * referred to in class cb at constant pool entry index. 1090 * 1091 * Returns -1 if the method does not exist in calledClass. 1092 */ 1093 JNIEXPORT jint JNICALL 1094 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1095 1096 /* 1097 * Releases the UTF string obtained from the VM. 1098 */ 1099 JNIEXPORT void JNICALL 1100 JVM_ReleaseUTF(const char *utf); 1101 1102 /* 1103 * Compare if two classes are in the same package. 1104 */ 1105 JNIEXPORT jboolean JNICALL 1106 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1107 1108 /* Get classfile constants */ 1109 #include "classfile_constants.h" 1110 1111 /* 1112 * Support for a VM-independent class format checker. 1113 */ 1114 typedef struct { 1115 unsigned long code; /* byte code */ 1116 unsigned long excs; /* exceptions */ 1117 unsigned long etab; /* catch table */ 1118 unsigned long lnum; /* line number */ 1119 unsigned long lvar; /* local vars */ 1120 } method_size_info; 1121 1122 typedef struct { 1123 unsigned int constants; /* constant pool */ 1124 unsigned int fields; 1125 unsigned int methods; 1126 unsigned int interfaces; 1127 unsigned int fields2; /* number of static 2-word fields */ 1128 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1129 1130 method_size_info clinit; /* memory used in clinit */ 1131 method_size_info main; /* used everywhere else */ 1132 } class_size_info; 1133 1134 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1135 JVM_ACC_FINAL | \ 1136 JVM_ACC_SUPER | \ 1137 JVM_ACC_INTERFACE | \ 1138 JVM_ACC_ABSTRACT | \ 1139 JVM_ACC_ANNOTATION | \ 1140 JVM_ACC_ENUM | \ 1141 JVM_ACC_SYNTHETIC) 1142 1143 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1144 JVM_ACC_PRIVATE | \ 1145 JVM_ACC_PROTECTED | \ 1146 JVM_ACC_STATIC | \ 1147 JVM_ACC_FINAL | \ 1148 JVM_ACC_VOLATILE | \ 1149 JVM_ACC_TRANSIENT | \ 1150 JVM_ACC_ENUM | \ 1151 JVM_ACC_SYNTHETIC) 1152 1153 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1154 JVM_ACC_PRIVATE | \ 1155 JVM_ACC_PROTECTED | \ 1156 JVM_ACC_STATIC | \ 1157 JVM_ACC_FINAL | \ 1158 JVM_ACC_SYNCHRONIZED | \ 1159 JVM_ACC_BRIDGE | \ 1160 JVM_ACC_VARARGS | \ 1161 JVM_ACC_NATIVE | \ 1162 JVM_ACC_ABSTRACT | \ 1163 JVM_ACC_STRICT | \ 1164 JVM_ACC_SYNTHETIC) 1165 1166 1167 /************************************************************************* 1168 PART 3: I/O and Network Support 1169 ************************************************************************/ 1170 1171 /* 1172 * Convert a pathname into native format. This function does syntactic 1173 * cleanup, such as removing redundant separator characters. It modifies 1174 * the given pathname string in place. 1175 */ 1176 JNIEXPORT char * JNICALL 1177 JVM_NativePath(char *); 1178 1179 /* 1180 * The standard printing functions supported by the Java VM. (Should they 1181 * be renamed to JVM_* in the future? 1182 */ 1183 1184 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3), 1185 * respectively, with the following differences: 1186 * - The string written to str is always zero-terminated, also in case of 1187 * truncation (count is too small to hold the result string), unless count 1188 * is 0. In case of truncation count-1 characters are written and '\0' 1189 * appendend. 1190 * - If count is too small to hold the whole string, -1 is returned across 1191 * all platforms. */ 1192 1193 JNIEXPORT int 1194 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1195 1196 JNIEXPORT int 1197 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1198 1199 JNIEXPORT int 1200 jio_fprintf(FILE *, const char *fmt, ...); 1201 1202 JNIEXPORT int 1203 jio_vfprintf(FILE *, const char *fmt, va_list args); 1204 1205 1206 JNIEXPORT void * JNICALL 1207 JVM_RawMonitorCreate(void); 1208 1209 JNIEXPORT void JNICALL 1210 JVM_RawMonitorDestroy(void *mon); 1211 1212 JNIEXPORT jint JNICALL 1213 JVM_RawMonitorEnter(void *mon); 1214 1215 JNIEXPORT void JNICALL 1216 JVM_RawMonitorExit(void *mon); 1217 1218 /* 1219 * java.lang.management support 1220 */ 1221 JNIEXPORT void* JNICALL 1222 JVM_GetManagement(jint version); 1223 1224 /* 1225 * com.sun.tools.attach.VirtualMachine support 1226 * 1227 * Initialize the agent properties with the properties maintained in the VM. 1228 */ 1229 JNIEXPORT jobject JNICALL 1230 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1231 1232 JNIEXPORT jstring JNICALL 1233 JVM_GetTemporaryDirectory(JNIEnv *env); 1234 1235 /* Generics reflection support. 1236 * 1237 * Returns information about the given class's EnclosingMethod 1238 * attribute, if present, or null if the class had no enclosing 1239 * method. 1240 * 1241 * If non-null, the returned array contains three elements. Element 0 1242 * is the java.lang.Class of which the enclosing method is a member, 1243 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1244 * method's name and descriptor, respectively. 1245 */ 1246 JNIEXPORT jobjectArray JNICALL 1247 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1248 1249 /* 1250 * This structure is used by the launcher to get the default thread 1251 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1252 * version of 1.1. As it is not supported otherwise, it has been removed 1253 * from jni.h 1254 */ 1255 typedef struct JDK1_1InitArgs { 1256 jint version; 1257 1258 char **properties; 1259 jint checkSource; 1260 jint nativeStackSize; 1261 jint javaStackSize; 1262 jint minHeapSize; 1263 jint maxHeapSize; 1264 jint verifyMode; 1265 char *classpath; 1266 1267 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1268 void (JNICALL *exit)(jint code); 1269 void (JNICALL *abort)(void); 1270 1271 jint enableClassGC; 1272 jint enableVerboseGC; 1273 jint disableAsyncGC; 1274 jint verbose; 1275 jboolean debugging; 1276 jint debugPort; 1277 } JDK1_1InitArgs; 1278 1279 1280 #ifdef __cplusplus 1281 } /* extern "C" */ 1282 1283 #endif /* __cplusplus */ 1284 1285 #endif /* !_JAVASOFT_JVM_H_ */