1 /* 2 * Copyright (c) 1997, 2019, 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 void * JNICALL 162 JVM_LoadLibrary(const char *name); 163 164 JNIEXPORT void JNICALL 165 JVM_UnloadLibrary(void * handle); 166 167 JNIEXPORT void * JNICALL 168 JVM_FindLibraryEntry(void *handle, const char *name); 169 170 JNIEXPORT jboolean JNICALL 171 JVM_IsSupportedJNIVersion(jint version); 172 173 JNIEXPORT jobjectArray JNICALL 174 JVM_GetVmArguments(JNIEnv *env); 175 176 JNIEXPORT void JNICALL 177 JVM_InitializeFromArchive(JNIEnv* env, jclass cls); 178 179 /* 180 * java.lang.Throwable 181 */ 182 JNIEXPORT void JNICALL 183 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 184 185 /* 186 * java.lang.StackTraceElement 187 */ 188 JNIEXPORT void JNICALL 189 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable); 190 191 JNIEXPORT void JNICALL 192 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo); 193 194 /* 195 * java.lang.NullPointerException 196 */ 197 198 JNIEXPORT jstring JNICALL 199 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable); 200 201 /* 202 * java.lang.StackWalker 203 */ 204 enum { 205 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2, 206 JVM_STACKWALK_GET_CALLER_CLASS = 0x04, 207 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 208 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 209 }; 210 211 JNIEXPORT jobject JNICALL 212 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode, 213 jint skip_frames, jint frame_count, jint start_index, 214 jobjectArray frames); 215 216 JNIEXPORT jint JNICALL 217 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor, 218 jint frame_count, jint start_index, 219 jobjectArray frames); 220 221 /* 222 * java.lang.Thread 223 */ 224 JNIEXPORT void JNICALL 225 JVM_StartThread(JNIEnv *env, jobject thread); 226 227 JNIEXPORT void JNICALL 228 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 229 230 JNIEXPORT jboolean JNICALL 231 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 232 233 JNIEXPORT void JNICALL 234 JVM_SuspendThread(JNIEnv *env, jobject thread); 235 236 JNIEXPORT void JNICALL 237 JVM_ResumeThread(JNIEnv *env, jobject thread); 238 239 JNIEXPORT void JNICALL 240 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 241 242 JNIEXPORT void JNICALL 243 JVM_Yield(JNIEnv *env, jclass threadClass); 244 245 JNIEXPORT void JNICALL 246 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 247 248 JNIEXPORT jobject JNICALL 249 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 250 251 JNIEXPORT void JNICALL 252 JVM_Interrupt(JNIEnv *env, jobject thread); 253 254 JNIEXPORT jboolean JNICALL 255 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 256 257 JNIEXPORT jboolean JNICALL 258 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 259 260 JNIEXPORT void JNICALL 261 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 262 263 JNIEXPORT jobjectArray JNICALL 264 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 265 266 JNIEXPORT void JNICALL 267 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 268 269 /* getStackTrace() and getAllStackTraces() method */ 270 JNIEXPORT jobjectArray JNICALL 271 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 272 273 /* 274 * java.lang.SecurityManager 275 */ 276 JNIEXPORT jobjectArray JNICALL 277 JVM_GetClassContext(JNIEnv *env); 278 279 /* 280 * java.lang.Package 281 */ 282 JNIEXPORT jstring JNICALL 283 JVM_GetSystemPackage(JNIEnv *env, jstring name); 284 285 JNIEXPORT jobjectArray JNICALL 286 JVM_GetSystemPackages(JNIEnv *env); 287 288 /* 289 * java.lang.ref.Reference 290 */ 291 JNIEXPORT jobject JNICALL 292 JVM_GetAndClearReferencePendingList(JNIEnv *env); 293 294 JNIEXPORT jboolean JNICALL 295 JVM_HasReferencePendingList(JNIEnv *env); 296 297 JNIEXPORT void JNICALL 298 JVM_WaitForReferencePendingList(JNIEnv *env); 299 300 /* 301 * java.io.ObjectInputStream 302 */ 303 JNIEXPORT jobject JNICALL 304 JVM_LatestUserDefinedLoader(JNIEnv *env); 305 306 /* 307 * java.lang.reflect.Array 308 */ 309 JNIEXPORT jint JNICALL 310 JVM_GetArrayLength(JNIEnv *env, jobject arr); 311 312 JNIEXPORT jobject JNICALL 313 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 314 315 JNIEXPORT jvalue JNICALL 316 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 317 318 JNIEXPORT void JNICALL 319 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 320 321 JNIEXPORT void JNICALL 322 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 323 unsigned char vCode); 324 325 JNIEXPORT jobject JNICALL 326 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 327 328 JNIEXPORT jobject JNICALL 329 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 330 331 332 /* 333 * Returns the immediate caller class of the native method invoking 334 * JVM_GetCallerClass. The Method.invoke and other frames due to 335 * reflection machinery are skipped. 336 * 337 * The caller is expected to be marked with 338 * jdk.internal.reflect.CallerSensitive. The JVM will throw an 339 * error if it is not marked properly. 340 */ 341 JNIEXPORT jclass JNICALL 342 JVM_GetCallerClass(JNIEnv *env); 343 344 345 /* 346 * Find primitive classes 347 * utf: class name 348 */ 349 JNIEXPORT jclass JNICALL 350 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 351 352 /* 353 * Link the 'arg' class 354 */ 355 JNIEXPORT void JNICALL 356 JVM_LinkClass(JNIEnv *env, jclass classClass, jclass arg); 357 358 /* 359 * Find a class from a boot class loader. Returns NULL if class not found. 360 */ 361 JNIEXPORT jclass JNICALL 362 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 363 364 /* 365 * Find a class from a given class loader. Throws ClassNotFoundException. 366 * name: name of class 367 * init: whether initialization is done 368 * loader: class loader to look up the class. This may not be the same as the caller's 369 * class loader. 370 * caller: initiating class. The initiating class may be null when a security 371 * manager is not installed. 372 */ 373 JNIEXPORT jclass JNICALL 374 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 375 jobject loader, jclass caller); 376 377 /* 378 * Find a class from a given class. 379 */ 380 JNIEXPORT jclass JNICALL 381 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 382 jclass from); 383 384 /* Find a loaded class cached by the VM */ 385 JNIEXPORT jclass JNICALL 386 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 387 388 /* Define a class */ 389 JNIEXPORT jclass JNICALL 390 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 391 jsize len, jobject pd); 392 393 /* Define a class with a source (added in JDK1.5) */ 394 JNIEXPORT jclass JNICALL 395 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 396 const jbyte *buf, jsize len, jobject pd, 397 const char *source); 398 399 /* 400 * Module support funcions 401 */ 402 403 /* 404 * Define a module with the specified packages and bind the module to the 405 * given class loader. 406 * module: module to define 407 * is_open: specifies if module is open (currently ignored) 408 * version: the module version 409 * location: the module location 410 * packages: list of packages in the module 411 * num_packages: number of packages in the module 412 */ 413 JNIEXPORT void JNICALL 414 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version, 415 jstring location, const char* const* packages, jsize num_packages); 416 417 /* 418 * Set the boot loader's unnamed module. 419 * module: boot loader's unnamed module 420 */ 421 JNIEXPORT void JNICALL 422 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module); 423 424 /* 425 * Do a qualified export of a package. 426 * from_module: module containing the package to export 427 * package: name of the package to export 428 * to_module: module to export the package to 429 */ 430 JNIEXPORT void JNICALL 431 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module); 432 433 /* 434 * Do an export of a package to all unnamed modules. 435 * from_module: module containing the package to export 436 * package: name of the package to export to all unnamed modules 437 */ 438 JNIEXPORT void JNICALL 439 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package); 440 441 /* 442 * Do an unqualified export of a package. 443 * from_module: module containing the package to export 444 * package: name of the package to export 445 */ 446 JNIEXPORT void JNICALL 447 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package); 448 449 /* 450 * Add a module to the list of modules that a given module can read. 451 * from_module: module requesting read access 452 * source_module: module that from_module wants to read 453 */ 454 JNIEXPORT void JNICALL 455 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module); 456 457 /* 458 * Reflection support functions 459 */ 460 461 JNIEXPORT jstring JNICALL 462 JVM_InitClassName(JNIEnv *env, jclass cls); 463 464 JNIEXPORT jobjectArray JNICALL 465 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 466 467 JNIEXPORT jboolean JNICALL 468 JVM_IsInterface(JNIEnv *env, jclass cls); 469 470 JNIEXPORT jobjectArray JNICALL 471 JVM_GetClassSigners(JNIEnv *env, jclass cls); 472 473 JNIEXPORT void JNICALL 474 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 475 476 JNIEXPORT jobject JNICALL 477 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 478 479 JNIEXPORT jboolean JNICALL 480 JVM_IsArrayClass(JNIEnv *env, jclass cls); 481 482 JNIEXPORT jboolean JNICALL 483 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 484 485 JNIEXPORT jint JNICALL 486 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 487 488 JNIEXPORT jobjectArray JNICALL 489 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 490 491 JNIEXPORT jclass JNICALL 492 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 493 494 JNIEXPORT jstring JNICALL 495 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 496 497 /* Generics support (JDK 1.5) */ 498 JNIEXPORT jstring JNICALL 499 JVM_GetClassSignature(JNIEnv *env, jclass cls); 500 501 /* Annotations support (JDK 1.5) */ 502 JNIEXPORT jbyteArray JNICALL 503 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 504 505 /* Type use annotations support (JDK 1.8) */ 506 507 JNIEXPORT jbyteArray JNICALL 508 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 509 510 JNIEXPORT jbyteArray JNICALL 511 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 512 513 JNIEXPORT jbyteArray JNICALL 514 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 515 516 /* 517 * New (JDK 1.4) reflection implementation 518 */ 519 520 JNIEXPORT jobjectArray JNICALL 521 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 522 523 JNIEXPORT jobjectArray JNICALL 524 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 525 526 JNIEXPORT jobjectArray JNICALL 527 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 528 529 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 530 This returns the access flags for the class as specified in the 531 class file rather than searching the InnerClasses attribute (if 532 present) to find the source-level access flags. Only the values of 533 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 534 valid. */ 535 JNIEXPORT jint JNICALL 536 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 537 538 /* Nestmates - since JDK 11 */ 539 540 JNIEXPORT jboolean JNICALL 541 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member); 542 543 JNIEXPORT jclass JNICALL 544 JVM_GetNestHost(JNIEnv *env, jclass current); 545 546 JNIEXPORT jobjectArray JNICALL 547 JVM_GetNestMembers(JNIEnv *env, jclass current); 548 549 /* The following two reflection routines are still needed due to startup time issues */ 550 /* 551 * java.lang.reflect.Method 552 */ 553 JNIEXPORT jobject JNICALL 554 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 555 556 /* 557 * java.lang.reflect.Constructor 558 */ 559 JNIEXPORT jobject JNICALL 560 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 561 562 /* 563 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 564 */ 565 566 JNIEXPORT jobject JNICALL 567 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 568 569 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 570 (JNIEnv *env, jobject unused, jobject jcpool); 571 572 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 573 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 574 575 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 576 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 577 578 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 579 (JNIEnv *env, jobject obj, jobject unused, jint index); 580 581 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 582 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 583 584 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 585 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 586 587 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 588 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 589 590 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 591 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 592 593 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 594 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 595 596 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 597 (JNIEnv *env, jobject obj, jobject unused, jint index); 598 599 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 600 (JNIEnv *env, jobject obj, jobject unused, jint index); 601 602 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 603 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 604 605 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 606 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 607 608 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 609 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 610 611 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 612 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 613 614 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 615 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 616 617 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 618 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 619 620 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 621 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 622 623 /* 624 * Parameter reflection 625 */ 626 627 JNIEXPORT jobjectArray JNICALL 628 JVM_GetMethodParameters(JNIEnv *env, jobject method); 629 630 /* 631 * java.security.* 632 */ 633 634 JNIEXPORT jobject JNICALL 635 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 636 637 /* 638 * Ensure that code doing a stackwalk and using javaVFrame::locals() to 639 * get the value will see a materialized value and not a scalar-replaced 640 * null value. 641 */ 642 #define JVM_EnsureMaterializedForStackWalk(env, value) \ 643 do {} while(0) // Nothing to do. The fact that the value escaped 644 // through a native method is enough. 645 646 JNIEXPORT jobject JNICALL 647 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 648 649 /* 650 * Signal support, used to implement the shutdown sequence. Every VM must 651 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 652 * (^C) and the latter for external termination (kill, system shutdown, etc.). 653 * Other platform-dependent signal values may also be supported. 654 */ 655 656 JNIEXPORT void * JNICALL 657 JVM_RegisterSignal(jint sig, void *handler); 658 659 JNIEXPORT jboolean JNICALL 660 JVM_RaiseSignal(jint sig); 661 662 JNIEXPORT jint JNICALL 663 JVM_FindSignal(const char *name); 664 665 /* 666 * Retrieve the assertion directives for the specified class. 667 */ 668 JNIEXPORT jboolean JNICALL 669 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 670 671 /* 672 * Retrieve the assertion directives from the VM. 673 */ 674 JNIEXPORT jobject JNICALL 675 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 676 677 /* 678 * java.util.concurrent.atomic.AtomicLong 679 */ 680 JNIEXPORT jboolean JNICALL 681 JVM_SupportsCX8(void); 682 683 /* 684 * com.sun.dtrace.jsdt support 685 */ 686 687 #define JVM_TRACING_DTRACE_VERSION 1 688 689 /* 690 * Structure to pass one probe description to JVM 691 */ 692 typedef struct { 693 jmethodID method; 694 jstring function; 695 jstring name; 696 void* reserved[4]; // for future use 697 } JVM_DTraceProbe; 698 699 /** 700 * Encapsulates the stability ratings for a DTrace provider field 701 */ 702 typedef struct { 703 jint nameStability; 704 jint dataStability; 705 jint dependencyClass; 706 } JVM_DTraceInterfaceAttributes; 707 708 /* 709 * Structure to pass one provider description to JVM 710 */ 711 typedef struct { 712 jstring name; 713 JVM_DTraceProbe* probes; 714 jint probe_count; 715 JVM_DTraceInterfaceAttributes providerAttributes; 716 JVM_DTraceInterfaceAttributes moduleAttributes; 717 JVM_DTraceInterfaceAttributes functionAttributes; 718 JVM_DTraceInterfaceAttributes nameAttributes; 719 JVM_DTraceInterfaceAttributes argsAttributes; 720 void* reserved[4]; // for future use 721 } JVM_DTraceProvider; 722 723 /* 724 * Get the version number the JVM was built with 725 */ 726 JNIEXPORT jint JNICALL 727 JVM_DTraceGetVersion(JNIEnv* env); 728 729 /* 730 * Register new probe with given signature, return global handle 731 * 732 * The version passed in is the version that the library code was 733 * built with. 734 */ 735 JNIEXPORT jlong JNICALL 736 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 737 jint providers_count, JVM_DTraceProvider* providers); 738 739 /* 740 * Check JSDT probe 741 */ 742 JNIEXPORT jboolean JNICALL 743 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 744 745 /* 746 * Destroy custom DOF 747 */ 748 JNIEXPORT void JNICALL 749 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle); 750 751 /* 752 * Check to see if DTrace is supported by OS 753 */ 754 JNIEXPORT jboolean JNICALL 755 JVM_DTraceIsSupported(JNIEnv* env); 756 757 /************************************************************************* 758 PART 2: Support for the Verifier and Class File Format Checker 759 ************************************************************************/ 760 /* 761 * Return the class name in UTF format. The result is valid 762 * until JVM_ReleaseUTf is called. 763 * 764 * The caller must treat the string as a constant and not modify it 765 * in any way. 766 */ 767 JNIEXPORT const char * JNICALL 768 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 769 770 /* 771 * Returns the constant pool types in the buffer provided by "types." 772 */ 773 JNIEXPORT void JNICALL 774 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 775 776 /* 777 * Returns the number of Constant Pool entries. 778 */ 779 JNIEXPORT jint JNICALL 780 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 781 782 /* 783 * Returns the number of *declared* fields or methods. 784 */ 785 JNIEXPORT jint JNICALL 786 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 787 788 JNIEXPORT jint JNICALL 789 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 790 791 /* 792 * Returns the CP indexes of exceptions raised by a given method. 793 * Places the result in the given buffer. 794 * 795 * The method is identified by method_index. 796 */ 797 JNIEXPORT void JNICALL 798 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 799 unsigned short *exceptions); 800 /* 801 * Returns the number of exceptions raised by a given method. 802 * The method is identified by method_index. 803 */ 804 JNIEXPORT jint JNICALL 805 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 806 807 /* 808 * Returns the byte code sequence of a given method. 809 * Places the result in the given buffer. 810 * 811 * The method is identified by method_index. 812 */ 813 JNIEXPORT void JNICALL 814 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 815 unsigned char *code); 816 817 /* 818 * Returns the length of the byte code sequence of a given method. 819 * The method is identified by method_index. 820 */ 821 JNIEXPORT jint JNICALL 822 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 823 824 /* 825 * A structure used to a capture exception table entry in a Java method. 826 */ 827 typedef struct { 828 jint start_pc; 829 jint end_pc; 830 jint handler_pc; 831 jint catchType; 832 } JVM_ExceptionTableEntryType; 833 834 /* 835 * Returns the exception table entry at entry_index 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_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 842 jint entry_index, 843 JVM_ExceptionTableEntryType *entry); 844 845 /* 846 * Returns the length of the exception table of a given method. 847 * The method is identified by method_index. 848 */ 849 JNIEXPORT jint JNICALL 850 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 851 852 /* 853 * Returns the modifiers of a given field. 854 * The field is identified by field_index. 855 */ 856 JNIEXPORT jint JNICALL 857 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 858 859 /* 860 * Returns the modifiers of a given method. 861 * The method is identified by method_index. 862 */ 863 JNIEXPORT jint JNICALL 864 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 865 866 /* 867 * Returns the number of local variables of a given method. 868 * The method is identified by method_index. 869 */ 870 JNIEXPORT jint JNICALL 871 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 872 873 /* 874 * Returns the number of arguments (including this pointer) of a given method. 875 * The method is identified by method_index. 876 */ 877 JNIEXPORT jint JNICALL 878 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 879 880 /* 881 * Returns the maximum amount of stack (in words) used by a given method. 882 * The method is identified by method_index. 883 */ 884 JNIEXPORT jint JNICALL 885 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 886 887 /* 888 * Is a given method a constructor. 889 * The method is identified by method_index. 890 */ 891 JNIEXPORT jboolean JNICALL 892 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 893 894 /* 895 * Is the given method generated by the VM. 896 * The method is identified by method_index. 897 */ 898 JNIEXPORT jboolean JNICALL 899 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 900 901 /* 902 * Returns the name of a given method in UTF format. 903 * The result remains valid until JVM_ReleaseUTF is called. 904 * 905 * The caller must treat the string as a constant and not modify it 906 * in any way. 907 */ 908 JNIEXPORT const char * JNICALL 909 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 910 911 /* 912 * Returns the signature of a given method in UTF format. 913 * The result remains valid until JVM_ReleaseUTF is called. 914 * 915 * The caller must treat the string as a constant and not modify it 916 * in any way. 917 */ 918 JNIEXPORT const char * JNICALL 919 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 920 921 /* 922 * Returns the name of the field referred to at a given constant pool 923 * index. 924 * 925 * The result is in UTF format and remains valid until JVM_ReleaseUTF 926 * is called. 927 * 928 * The caller must treat the string as a constant and not modify it 929 * in any way. 930 */ 931 JNIEXPORT const char * JNICALL 932 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 933 934 /* 935 * Returns the name of the method referred to at a given constant pool 936 * index. 937 * 938 * The result is in UTF format and remains valid until JVM_ReleaseUTF 939 * is called. 940 * 941 * The caller must treat the string as a constant and not modify it 942 * in any way. 943 */ 944 JNIEXPORT const char * JNICALL 945 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 946 947 /* 948 * Returns the signature of the method referred to at a given constant pool 949 * index. 950 * 951 * The result is in UTF format and remains valid until JVM_ReleaseUTF 952 * is called. 953 * 954 * The caller must treat the string as a constant and not modify it 955 * in any way. 956 */ 957 JNIEXPORT const char * JNICALL 958 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 959 960 /* 961 * Returns the signature of the field referred to at a given constant pool 962 * index. 963 * 964 * The result is in UTF format and remains valid until JVM_ReleaseUTF 965 * is called. 966 * 967 * The caller must treat the string as a constant and not modify it 968 * in any way. 969 */ 970 JNIEXPORT const char * JNICALL 971 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 972 973 /* 974 * Returns the class name referred to at a given constant pool index. 975 * 976 * The result is in UTF format and remains valid until JVM_ReleaseUTF 977 * is called. 978 * 979 * The caller must treat the string as a constant and not modify it 980 * in any way. 981 */ 982 JNIEXPORT const char * JNICALL 983 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 984 985 /* 986 * Returns the class name referred to at a given constant pool index. 987 * 988 * The constant pool entry must refer to a CONSTANT_Fieldref. 989 * 990 * The result is in UTF format and remains valid until JVM_ReleaseUTF 991 * is called. 992 * 993 * The caller must treat the string as a constant and not modify it 994 * in any way. 995 */ 996 JNIEXPORT const char * JNICALL 997 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 998 999 /* 1000 * Returns the class name referred to at a given constant pool index. 1001 * 1002 * The constant pool entry must refer to CONSTANT_Methodref or 1003 * CONSTANT_InterfaceMethodref. 1004 * 1005 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1006 * is called. 1007 * 1008 * The caller must treat the string as a constant and not modify it 1009 * in any way. 1010 */ 1011 JNIEXPORT const char * JNICALL 1012 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1013 1014 /* 1015 * Returns the modifiers of a field in calledClass. The field is 1016 * referred to in class cb at constant pool entry index. 1017 * 1018 * The caller must treat the string as a constant and not modify it 1019 * in any way. 1020 * 1021 * Returns -1 if the field does not exist in calledClass. 1022 */ 1023 JNIEXPORT jint JNICALL 1024 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1025 1026 /* 1027 * Returns the modifiers of a method in calledClass. The method is 1028 * referred to in class cb at constant pool entry index. 1029 * 1030 * Returns -1 if the method does not exist in calledClass. 1031 */ 1032 JNIEXPORT jint JNICALL 1033 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1034 1035 /* 1036 * Releases the UTF string obtained from the VM. 1037 */ 1038 JNIEXPORT void JNICALL 1039 JVM_ReleaseUTF(const char *utf); 1040 1041 /* 1042 * Compare if two classes are in the same package. 1043 */ 1044 JNIEXPORT jboolean JNICALL 1045 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1046 1047 /* Get classfile constants */ 1048 #include "classfile_constants.h" 1049 1050 /* 1051 * Support for a VM-independent class format checker. 1052 */ 1053 typedef struct { 1054 unsigned long code; /* byte code */ 1055 unsigned long excs; /* exceptions */ 1056 unsigned long etab; /* catch table */ 1057 unsigned long lnum; /* line number */ 1058 unsigned long lvar; /* local vars */ 1059 } method_size_info; 1060 1061 typedef struct { 1062 unsigned int constants; /* constant pool */ 1063 unsigned int fields; 1064 unsigned int methods; 1065 unsigned int interfaces; 1066 unsigned int fields2; /* number of static 2-word fields */ 1067 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1068 1069 method_size_info clinit; /* memory used in clinit */ 1070 method_size_info main; /* used everywhere else */ 1071 } class_size_info; 1072 1073 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1074 JVM_ACC_FINAL | \ 1075 JVM_ACC_SUPER | \ 1076 JVM_ACC_INTERFACE | \ 1077 JVM_ACC_ABSTRACT | \ 1078 JVM_ACC_ANNOTATION | \ 1079 JVM_ACC_ENUM | \ 1080 JVM_ACC_SYNTHETIC) 1081 1082 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1083 JVM_ACC_PRIVATE | \ 1084 JVM_ACC_PROTECTED | \ 1085 JVM_ACC_STATIC | \ 1086 JVM_ACC_FINAL | \ 1087 JVM_ACC_VOLATILE | \ 1088 JVM_ACC_TRANSIENT | \ 1089 JVM_ACC_ENUM | \ 1090 JVM_ACC_SYNTHETIC) 1091 1092 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1093 JVM_ACC_PRIVATE | \ 1094 JVM_ACC_PROTECTED | \ 1095 JVM_ACC_STATIC | \ 1096 JVM_ACC_FINAL | \ 1097 JVM_ACC_SYNCHRONIZED | \ 1098 JVM_ACC_BRIDGE | \ 1099 JVM_ACC_VARARGS | \ 1100 JVM_ACC_NATIVE | \ 1101 JVM_ACC_ABSTRACT | \ 1102 JVM_ACC_STRICT | \ 1103 JVM_ACC_SYNTHETIC) 1104 1105 /* 1106 * This is the function defined in libjava.so to perform path 1107 * canonicalization. VM call this function before opening jar files 1108 * to load system classes. 1109 * 1110 */ 1111 1112 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1113 1114 /************************************************************************* 1115 PART 3: I/O and Network Support 1116 ************************************************************************/ 1117 1118 /* 1119 * Convert a pathname into native format. This function does syntactic 1120 * cleanup, such as removing redundant separator characters. It modifies 1121 * the given pathname string in place. 1122 */ 1123 JNIEXPORT char * JNICALL 1124 JVM_NativePath(char *); 1125 1126 /* 1127 * The standard printing functions supported by the Java VM. (Should they 1128 * be renamed to JVM_* in the future? 1129 */ 1130 1131 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3), 1132 * respectively, with the following differences: 1133 * - The string written to str is always zero-terminated, also in case of 1134 * truncation (count is too small to hold the result string), unless count 1135 * is 0. In case of truncation count-1 characters are written and '\0' 1136 * appendend. 1137 * - If count is too small to hold the whole string, -1 is returned across 1138 * all platforms. */ 1139 1140 JNIEXPORT int 1141 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1142 1143 JNIEXPORT int 1144 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1145 1146 JNIEXPORT int 1147 jio_fprintf(FILE *, const char *fmt, ...); 1148 1149 JNIEXPORT int 1150 jio_vfprintf(FILE *, const char *fmt, va_list args); 1151 1152 1153 JNIEXPORT void * JNICALL 1154 JVM_RawMonitorCreate(void); 1155 1156 JNIEXPORT void JNICALL 1157 JVM_RawMonitorDestroy(void *mon); 1158 1159 JNIEXPORT jint JNICALL 1160 JVM_RawMonitorEnter(void *mon); 1161 1162 JNIEXPORT void JNICALL 1163 JVM_RawMonitorExit(void *mon); 1164 1165 /* 1166 * java.lang.management support 1167 */ 1168 JNIEXPORT void* JNICALL 1169 JVM_GetManagement(jint version); 1170 1171 /* 1172 * com.sun.tools.attach.VirtualMachine support 1173 * 1174 * Initialize the agent properties with the properties maintained in the VM. 1175 */ 1176 JNIEXPORT jobject JNICALL 1177 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1178 1179 JNIEXPORT jstring JNICALL 1180 JVM_GetTemporaryDirectory(JNIEnv *env); 1181 1182 /* Generics reflection support. 1183 * 1184 * Returns information about the given class's EnclosingMethod 1185 * attribute, if present, or null if the class had no enclosing 1186 * method. 1187 * 1188 * If non-null, the returned array contains three elements. Element 0 1189 * is the java.lang.Class of which the enclosing method is a member, 1190 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1191 * method's name and descriptor, respectively. 1192 */ 1193 JNIEXPORT jobjectArray JNICALL 1194 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1195 1196 /* 1197 * This structure is used by the launcher to get the default thread 1198 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1199 * version of 1.1. As it is not supported otherwise, it has been removed 1200 * from jni.h 1201 */ 1202 typedef struct JDK1_1InitArgs { 1203 jint version; 1204 1205 char **properties; 1206 jint checkSource; 1207 jint nativeStackSize; 1208 jint javaStackSize; 1209 jint minHeapSize; 1210 jint maxHeapSize; 1211 jint verifyMode; 1212 char *classpath; 1213 1214 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1215 void (JNICALL *exit)(jint code); 1216 void (JNICALL *abort)(void); 1217 1218 jint enableClassGC; 1219 jint enableVerboseGC; 1220 jint disableAsyncGC; 1221 jint verbose; 1222 jboolean debugging; 1223 jint debugPort; 1224 } JDK1_1InitArgs; 1225 1226 1227 #ifdef __cplusplus 1228 } /* extern "C" */ 1229 1230 #endif /* __cplusplus */ 1231 1232 #endif /* !_JAVASOFT_JVM_H_ */