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.StackWalker 196 */ 197 enum { 198 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2, 199 JVM_STACKWALK_GET_CALLER_CLASS = 0x04, 200 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 201 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 202 }; 203 204 JNIEXPORT jobject JNICALL 205 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode, 206 jint skip_frames, jint frame_count, jint start_index, 207 jobjectArray frames); 208 209 JNIEXPORT jint JNICALL 210 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor, 211 jint frame_count, jint start_index, 212 jobjectArray frames); 213 214 /* 215 * java.lang.Thread 216 */ 217 JNIEXPORT void JNICALL 218 JVM_StartThread(JNIEnv *env, jobject thread); 219 220 JNIEXPORT void JNICALL 221 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 222 223 JNIEXPORT jboolean JNICALL 224 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 225 226 JNIEXPORT void JNICALL 227 JVM_SuspendThread(JNIEnv *env, jobject thread); 228 229 JNIEXPORT void JNICALL 230 JVM_ResumeThread(JNIEnv *env, jobject thread); 231 232 JNIEXPORT void JNICALL 233 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 234 235 JNIEXPORT void JNICALL 236 JVM_Yield(JNIEnv *env, jclass threadClass); 237 238 JNIEXPORT void JNICALL 239 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 240 241 JNIEXPORT jobject JNICALL 242 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 243 244 JNIEXPORT jint JNICALL 245 JVM_CountStackFrames(JNIEnv *env, jobject thread); 246 247 JNIEXPORT void JNICALL 248 JVM_Interrupt(JNIEnv *env, jobject thread); 249 250 JNIEXPORT jboolean JNICALL 251 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 252 253 JNIEXPORT jboolean JNICALL 254 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 255 256 JNIEXPORT void JNICALL 257 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 258 259 JNIEXPORT jobjectArray JNICALL 260 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 261 262 JNIEXPORT void JNICALL 263 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 264 265 /* getStackTrace() and getAllStackTraces() method */ 266 JNIEXPORT jobjectArray JNICALL 267 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 268 269 /* 270 * java.lang.SecurityManager 271 */ 272 JNIEXPORT jobjectArray JNICALL 273 JVM_GetClassContext(JNIEnv *env); 274 275 /* 276 * java.lang.Package 277 */ 278 JNIEXPORT jstring JNICALL 279 JVM_GetSystemPackage(JNIEnv *env, jstring name); 280 281 JNIEXPORT jobjectArray JNICALL 282 JVM_GetSystemPackages(JNIEnv *env); 283 284 /* 285 * java.lang.ref.Reference 286 */ 287 JNIEXPORT jobject JNICALL 288 JVM_GetAndClearReferencePendingList(JNIEnv *env); 289 290 JNIEXPORT jboolean JNICALL 291 JVM_HasReferencePendingList(JNIEnv *env); 292 293 JNIEXPORT void JNICALL 294 JVM_WaitForReferencePendingList(JNIEnv *env); 295 296 /* 297 * java.io.ObjectInputStream 298 */ 299 JNIEXPORT jobject JNICALL 300 JVM_LatestUserDefinedLoader(JNIEnv *env); 301 302 /* 303 * java.lang.reflect.Array 304 */ 305 JNIEXPORT jint JNICALL 306 JVM_GetArrayLength(JNIEnv *env, jobject arr); 307 308 JNIEXPORT jobject JNICALL 309 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 310 311 JNIEXPORT jvalue JNICALL 312 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 313 314 JNIEXPORT void JNICALL 315 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 316 317 JNIEXPORT void JNICALL 318 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 319 unsigned char vCode); 320 321 JNIEXPORT jobject JNICALL 322 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 323 324 JNIEXPORT jobject JNICALL 325 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 326 327 328 /* 329 * Returns the immediate caller class of the native method invoking 330 * JVM_GetCallerClass. The Method.invoke and other frames due to 331 * reflection machinery are skipped. 332 * 333 * The caller is expected to be marked with 334 * jdk.internal.reflect.CallerSensitive. The JVM will throw an 335 * error if it is not marked properly. 336 */ 337 JNIEXPORT jclass JNICALL 338 JVM_GetCallerClass(JNIEnv *env); 339 340 341 /* 342 * Find primitive classes 343 * utf: class name 344 */ 345 JNIEXPORT jclass JNICALL 346 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 347 348 /* 349 * Link the 'arg' class 350 */ 351 JNIEXPORT void JNICALL 352 JVM_LinkClass(JNIEnv *env, jclass classClass, jclass arg); 353 354 /* 355 * Find a class from a boot class loader. Returns NULL if class not found. 356 */ 357 JNIEXPORT jclass JNICALL 358 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 359 360 /* 361 * Find a class from a given class loader. Throws ClassNotFoundException. 362 * name: name of class 363 * init: whether initialization is done 364 * loader: class loader to look up the class. This may not be the same as the caller's 365 * class loader. 366 * caller: initiating class. The initiating class may be null when a security 367 * manager is not installed. 368 */ 369 JNIEXPORT jclass JNICALL 370 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 371 jobject loader, jclass caller); 372 373 /* 374 * Find a class from a given class. 375 */ 376 JNIEXPORT jclass JNICALL 377 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 378 jclass from); 379 380 /* Find a loaded class cached by the VM */ 381 JNIEXPORT jclass JNICALL 382 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 383 384 /* Define a class */ 385 JNIEXPORT jclass JNICALL 386 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 387 jsize len, jobject pd); 388 389 /* Define a class with a source (added in JDK1.5) */ 390 JNIEXPORT jclass JNICALL 391 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 392 const jbyte *buf, jsize len, jobject pd, 393 const char *source); 394 395 /* 396 * Module support funcions 397 */ 398 399 /* 400 * Define a module with the specified packages and bind the module to the 401 * given class loader. 402 * module: module to define 403 * is_open: specifies if module is open (currently ignored) 404 * version: the module version 405 * location: the module location 406 * packages: list of packages in the module 407 * num_packages: number of packages in the module 408 */ 409 JNIEXPORT void JNICALL 410 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version, 411 jstring location, const char* const* packages, jsize num_packages); 412 413 /* 414 * Set the boot loader's unnamed module. 415 * module: boot loader's unnamed module 416 */ 417 JNIEXPORT void JNICALL 418 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module); 419 420 /* 421 * Do a qualified export of a package. 422 * from_module: module containing the package to export 423 * package: name of the package to export 424 * to_module: module to export the package to 425 */ 426 JNIEXPORT void JNICALL 427 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module); 428 429 /* 430 * Do an export of a package to all unnamed modules. 431 * from_module: module containing the package to export 432 * package: name of the package to export to all unnamed modules 433 */ 434 JNIEXPORT void JNICALL 435 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package); 436 437 /* 438 * Do an unqualified export of a package. 439 * from_module: module containing the package to export 440 * package: name of the package to export 441 */ 442 JNIEXPORT void JNICALL 443 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package); 444 445 /* 446 * Add a module to the list of modules that a given module can read. 447 * from_module: module requesting read access 448 * source_module: module that from_module wants to read 449 */ 450 JNIEXPORT void JNICALL 451 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module); 452 453 /* 454 * Reflection support functions 455 */ 456 457 JNIEXPORT jstring JNICALL 458 JVM_InitClassName(JNIEnv *env, jclass cls); 459 460 JNIEXPORT jobjectArray JNICALL 461 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 462 463 JNIEXPORT jboolean JNICALL 464 JVM_IsInterface(JNIEnv *env, jclass cls); 465 466 JNIEXPORT jobjectArray JNICALL 467 JVM_GetClassSigners(JNIEnv *env, jclass cls); 468 469 JNIEXPORT void JNICALL 470 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 471 472 JNIEXPORT jobject JNICALL 473 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 474 475 JNIEXPORT jboolean JNICALL 476 JVM_IsArrayClass(JNIEnv *env, jclass cls); 477 478 JNIEXPORT jboolean JNICALL 479 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 480 481 JNIEXPORT jint JNICALL 482 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 483 484 JNIEXPORT jobjectArray JNICALL 485 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 486 487 JNIEXPORT jclass JNICALL 488 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 489 490 JNIEXPORT jstring JNICALL 491 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 492 493 /* Generics support (JDK 1.5) */ 494 JNIEXPORT jstring JNICALL 495 JVM_GetClassSignature(JNIEnv *env, jclass cls); 496 497 /* Annotations support (JDK 1.5) */ 498 JNIEXPORT jbyteArray JNICALL 499 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 500 501 /* Type use annotations support (JDK 1.8) */ 502 503 JNIEXPORT jbyteArray JNICALL 504 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 505 506 JNIEXPORT jbyteArray JNICALL 507 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 508 509 JNIEXPORT jbyteArray JNICALL 510 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 511 512 /* 513 * New (JDK 1.4) reflection implementation 514 */ 515 516 JNIEXPORT jobjectArray JNICALL 517 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 518 519 JNIEXPORT jobjectArray JNICALL 520 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 521 522 JNIEXPORT jobjectArray JNICALL 523 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 524 525 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 526 This returns the access flags for the class as specified in the 527 class file rather than searching the InnerClasses attribute (if 528 present) to find the source-level access flags. Only the values of 529 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 530 valid. */ 531 JNIEXPORT jint JNICALL 532 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 533 534 /* Nestmates - since JDK 11 */ 535 536 JNIEXPORT jboolean JNICALL 537 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member); 538 539 JNIEXPORT jclass JNICALL 540 JVM_GetNestHost(JNIEnv *env, jclass current); 541 542 JNIEXPORT jobjectArray JNICALL 543 JVM_GetNestMembers(JNIEnv *env, jclass current); 544 545 /* The following two reflection routines are still needed due to startup time issues */ 546 /* 547 * java.lang.reflect.Method 548 */ 549 JNIEXPORT jobject JNICALL 550 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 551 552 /* 553 * java.lang.reflect.Constructor 554 */ 555 JNIEXPORT jobject JNICALL 556 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 557 558 /* 559 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 560 */ 561 562 JNIEXPORT jobject JNICALL 563 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 564 565 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 566 (JNIEnv *env, jobject unused, jobject jcpool); 567 568 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 569 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 570 571 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 572 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 573 574 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 575 (JNIEnv *env, jobject obj, jobject unused, jint index); 576 577 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 578 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 579 580 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 581 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 582 583 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 584 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 585 586 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 587 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 588 589 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 590 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 591 592 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 593 (JNIEnv *env, jobject obj, jobject unused, jint index); 594 595 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 596 (JNIEnv *env, jobject obj, jobject unused, jint index); 597 598 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 599 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 600 601 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 602 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 603 604 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 605 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 606 607 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 608 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 609 610 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 611 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 612 613 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 614 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 615 616 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 617 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 618 619 /* 620 * Parameter reflection 621 */ 622 623 JNIEXPORT jobjectArray JNICALL 624 JVM_GetMethodParameters(JNIEnv *env, jobject method); 625 626 /* 627 * java.security.* 628 */ 629 630 JNIEXPORT jobject JNICALL 631 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 632 633 /* 634 * Ensure that code doing a stackwalk and using javaVFrame::locals() to 635 * get the value will see a materialized value and not a scalar-replaced 636 * null value. 637 */ 638 #define JVM_EnsureMaterializedForStackWalk(env, value) \ 639 do {} while(0) // Nothing to do. The fact that the value escaped 640 // through a native method is enough. 641 642 JNIEXPORT jobject JNICALL 643 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 644 645 /* 646 * Signal support, used to implement the shutdown sequence. Every VM must 647 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 648 * (^C) and the latter for external termination (kill, system shutdown, etc.). 649 * Other platform-dependent signal values may also be supported. 650 */ 651 652 JNIEXPORT void * JNICALL 653 JVM_RegisterSignal(jint sig, void *handler); 654 655 JNIEXPORT jboolean JNICALL 656 JVM_RaiseSignal(jint sig); 657 658 JNIEXPORT jint JNICALL 659 JVM_FindSignal(const char *name); 660 661 /* 662 * Retrieve the assertion directives for the specified class. 663 */ 664 JNIEXPORT jboolean JNICALL 665 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 666 667 /* 668 * Retrieve the assertion directives from the VM. 669 */ 670 JNIEXPORT jobject JNICALL 671 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 672 673 /* 674 * java.util.concurrent.atomic.AtomicLong 675 */ 676 JNIEXPORT jboolean JNICALL 677 JVM_SupportsCX8(void); 678 679 /* 680 * com.sun.dtrace.jsdt support 681 */ 682 683 #define JVM_TRACING_DTRACE_VERSION 1 684 685 /* 686 * Structure to pass one probe description to JVM 687 */ 688 typedef struct { 689 jmethodID method; 690 jstring function; 691 jstring name; 692 void* reserved[4]; // for future use 693 } JVM_DTraceProbe; 694 695 /** 696 * Encapsulates the stability ratings for a DTrace provider field 697 */ 698 typedef struct { 699 jint nameStability; 700 jint dataStability; 701 jint dependencyClass; 702 } JVM_DTraceInterfaceAttributes; 703 704 /* 705 * Structure to pass one provider description to JVM 706 */ 707 typedef struct { 708 jstring name; 709 JVM_DTraceProbe* probes; 710 jint probe_count; 711 JVM_DTraceInterfaceAttributes providerAttributes; 712 JVM_DTraceInterfaceAttributes moduleAttributes; 713 JVM_DTraceInterfaceAttributes functionAttributes; 714 JVM_DTraceInterfaceAttributes nameAttributes; 715 JVM_DTraceInterfaceAttributes argsAttributes; 716 void* reserved[4]; // for future use 717 } JVM_DTraceProvider; 718 719 /* 720 * Get the version number the JVM was built with 721 */ 722 JNIEXPORT jint JNICALL 723 JVM_DTraceGetVersion(JNIEnv* env); 724 725 /* 726 * Register new probe with given signature, return global handle 727 * 728 * The version passed in is the version that the library code was 729 * built with. 730 */ 731 JNIEXPORT jlong JNICALL 732 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 733 jint providers_count, JVM_DTraceProvider* providers); 734 735 /* 736 * Check JSDT probe 737 */ 738 JNIEXPORT jboolean JNICALL 739 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 740 741 /* 742 * Destroy custom DOF 743 */ 744 JNIEXPORT void JNICALL 745 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle); 746 747 /* 748 * Check to see if DTrace is supported by OS 749 */ 750 JNIEXPORT jboolean JNICALL 751 JVM_DTraceIsSupported(JNIEnv* env); 752 753 /************************************************************************* 754 PART 2: Support for the Verifier and Class File Format Checker 755 ************************************************************************/ 756 /* 757 * Return the class name in UTF format. The result is valid 758 * until JVM_ReleaseUTf is called. 759 * 760 * The caller must treat the string as a constant and not modify it 761 * in any way. 762 */ 763 JNIEXPORT const char * JNICALL 764 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 765 766 /* 767 * Returns the constant pool types in the buffer provided by "types." 768 */ 769 JNIEXPORT void JNICALL 770 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 771 772 /* 773 * Returns the number of Constant Pool entries. 774 */ 775 JNIEXPORT jint JNICALL 776 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 777 778 /* 779 * Returns the number of *declared* fields or methods. 780 */ 781 JNIEXPORT jint JNICALL 782 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 783 784 JNIEXPORT jint JNICALL 785 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 786 787 /* 788 * Returns the CP indexes of exceptions raised by a given method. 789 * Places the result in the given buffer. 790 * 791 * The method is identified by method_index. 792 */ 793 JNIEXPORT void JNICALL 794 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 795 unsigned short *exceptions); 796 /* 797 * Returns the number of exceptions raised by a given method. 798 * The method is identified by method_index. 799 */ 800 JNIEXPORT jint JNICALL 801 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 802 803 /* 804 * Returns the byte code sequence of a given method. 805 * Places the result in the given buffer. 806 * 807 * The method is identified by method_index. 808 */ 809 JNIEXPORT void JNICALL 810 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 811 unsigned char *code); 812 813 /* 814 * Returns the length of the byte code sequence of a given method. 815 * The method is identified by method_index. 816 */ 817 JNIEXPORT jint JNICALL 818 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 819 820 /* 821 * A structure used to a capture exception table entry in a Java method. 822 */ 823 typedef struct { 824 jint start_pc; 825 jint end_pc; 826 jint handler_pc; 827 jint catchType; 828 } JVM_ExceptionTableEntryType; 829 830 /* 831 * Returns the exception table entry at entry_index of a given method. 832 * Places the result in the given buffer. 833 * 834 * The method is identified by method_index. 835 */ 836 JNIEXPORT void JNICALL 837 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 838 jint entry_index, 839 JVM_ExceptionTableEntryType *entry); 840 841 /* 842 * Returns the length of the exception table of a given method. 843 * The method is identified by method_index. 844 */ 845 JNIEXPORT jint JNICALL 846 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 847 848 /* 849 * Returns the modifiers of a given field. 850 * The field is identified by field_index. 851 */ 852 JNIEXPORT jint JNICALL 853 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 854 855 /* 856 * Returns the modifiers of a given method. 857 * The method is identified by method_index. 858 */ 859 JNIEXPORT jint JNICALL 860 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 861 862 /* 863 * Returns the number of local variables of a given method. 864 * The method is identified by method_index. 865 */ 866 JNIEXPORT jint JNICALL 867 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 868 869 /* 870 * Returns the number of arguments (including this pointer) of a given method. 871 * The method is identified by method_index. 872 */ 873 JNIEXPORT jint JNICALL 874 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 875 876 /* 877 * Returns the maximum amount of stack (in words) used by a given method. 878 * The method is identified by method_index. 879 */ 880 JNIEXPORT jint JNICALL 881 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 882 883 /* 884 * Is a given method a constructor. 885 * The method is identified by method_index. 886 */ 887 JNIEXPORT jboolean JNICALL 888 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 889 890 /* 891 * Is the given method generated by the VM. 892 * The method is identified by method_index. 893 */ 894 JNIEXPORT jboolean JNICALL 895 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 896 897 /* 898 * Returns the name of a given method in UTF format. 899 * The result remains valid until JVM_ReleaseUTF is called. 900 * 901 * The caller must treat the string as a constant and not modify it 902 * in any way. 903 */ 904 JNIEXPORT const char * JNICALL 905 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 906 907 /* 908 * Returns the signature of a given method in UTF format. 909 * The result remains valid until JVM_ReleaseUTF is called. 910 * 911 * The caller must treat the string as a constant and not modify it 912 * in any way. 913 */ 914 JNIEXPORT const char * JNICALL 915 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 916 917 /* 918 * Returns the name of the field referred to at a given constant pool 919 * index. 920 * 921 * The result is in UTF format and remains valid until JVM_ReleaseUTF 922 * is called. 923 * 924 * The caller must treat the string as a constant and not modify it 925 * in any way. 926 */ 927 JNIEXPORT const char * JNICALL 928 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 929 930 /* 931 * Returns the name of the method referred to at a given constant pool 932 * index. 933 * 934 * The result is in UTF format and remains valid until JVM_ReleaseUTF 935 * is called. 936 * 937 * The caller must treat the string as a constant and not modify it 938 * in any way. 939 */ 940 JNIEXPORT const char * JNICALL 941 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 942 943 /* 944 * Returns the signature of the method referred to at a given constant pool 945 * index. 946 * 947 * The result is in UTF format and remains valid until JVM_ReleaseUTF 948 * is called. 949 * 950 * The caller must treat the string as a constant and not modify it 951 * in any way. 952 */ 953 JNIEXPORT const char * JNICALL 954 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 955 956 /* 957 * Returns the signature of the field referred to at a given constant pool 958 * index. 959 * 960 * The result is in UTF format and remains valid until JVM_ReleaseUTF 961 * is called. 962 * 963 * The caller must treat the string as a constant and not modify it 964 * in any way. 965 */ 966 JNIEXPORT const char * JNICALL 967 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 968 969 /* 970 * Returns the class name referred to at a given constant pool index. 971 * 972 * The result is in UTF format and remains valid until JVM_ReleaseUTF 973 * is called. 974 * 975 * The caller must treat the string as a constant and not modify it 976 * in any way. 977 */ 978 JNIEXPORT const char * JNICALL 979 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 980 981 /* 982 * Returns the class name referred to at a given constant pool index. 983 * 984 * The constant pool entry must refer to a CONSTANT_Fieldref. 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_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 994 995 /* 996 * Returns the class name referred to at a given constant pool index. 997 * 998 * The constant pool entry must refer to CONSTANT_Methodref or 999 * CONSTANT_InterfaceMethodref. 1000 * 1001 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1002 * is called. 1003 * 1004 * The caller must treat the string as a constant and not modify it 1005 * in any way. 1006 */ 1007 JNIEXPORT const char * JNICALL 1008 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1009 1010 /* 1011 * Returns the modifiers of a field in calledClass. The field is 1012 * referred to in class cb at constant pool entry index. 1013 * 1014 * The caller must treat the string as a constant and not modify it 1015 * in any way. 1016 * 1017 * Returns -1 if the field does not exist in calledClass. 1018 */ 1019 JNIEXPORT jint JNICALL 1020 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1021 1022 /* 1023 * Returns the modifiers of a method in calledClass. The method is 1024 * referred to in class cb at constant pool entry index. 1025 * 1026 * Returns -1 if the method does not exist in calledClass. 1027 */ 1028 JNIEXPORT jint JNICALL 1029 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1030 1031 /* 1032 * Releases the UTF string obtained from the VM. 1033 */ 1034 JNIEXPORT void JNICALL 1035 JVM_ReleaseUTF(const char *utf); 1036 1037 /* 1038 * Compare if two classes are in the same package. 1039 */ 1040 JNIEXPORT jboolean JNICALL 1041 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1042 1043 /* Get classfile constants */ 1044 #include "classfile_constants.h" 1045 1046 /* 1047 * Support for a VM-independent class format checker. 1048 */ 1049 typedef struct { 1050 unsigned long code; /* byte code */ 1051 unsigned long excs; /* exceptions */ 1052 unsigned long etab; /* catch table */ 1053 unsigned long lnum; /* line number */ 1054 unsigned long lvar; /* local vars */ 1055 } method_size_info; 1056 1057 typedef struct { 1058 unsigned int constants; /* constant pool */ 1059 unsigned int fields; 1060 unsigned int methods; 1061 unsigned int interfaces; 1062 unsigned int fields2; /* number of static 2-word fields */ 1063 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1064 1065 method_size_info clinit; /* memory used in clinit */ 1066 method_size_info main; /* used everywhere else */ 1067 } class_size_info; 1068 1069 /* 1070 * Functions defined in libjava.so to perform string conversions. 1071 * 1072 */ 1073 1074 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1075 1076 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1077 JVM_ACC_FINAL | \ 1078 JVM_ACC_SUPER | \ 1079 JVM_ACC_INTERFACE | \ 1080 JVM_ACC_ABSTRACT | \ 1081 JVM_ACC_ANNOTATION | \ 1082 JVM_ACC_ENUM | \ 1083 JVM_ACC_SYNTHETIC) 1084 1085 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1086 JVM_ACC_PRIVATE | \ 1087 JVM_ACC_PROTECTED | \ 1088 JVM_ACC_STATIC | \ 1089 JVM_ACC_FINAL | \ 1090 JVM_ACC_VOLATILE | \ 1091 JVM_ACC_TRANSIENT | \ 1092 JVM_ACC_ENUM | \ 1093 JVM_ACC_SYNTHETIC) 1094 1095 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1096 JVM_ACC_PRIVATE | \ 1097 JVM_ACC_PROTECTED | \ 1098 JVM_ACC_STATIC | \ 1099 JVM_ACC_FINAL | \ 1100 JVM_ACC_SYNCHRONIZED | \ 1101 JVM_ACC_BRIDGE | \ 1102 JVM_ACC_VARARGS | \ 1103 JVM_ACC_NATIVE | \ 1104 JVM_ACC_ABSTRACT | \ 1105 JVM_ACC_STRICT | \ 1106 JVM_ACC_SYNTHETIC) 1107 1108 /* 1109 * This is the function defined in libjava.so to perform path 1110 * canonicalization. VM call this function before opening jar files 1111 * to load system classes. 1112 * 1113 */ 1114 1115 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1116 1117 /************************************************************************* 1118 PART 3: I/O and Network Support 1119 ************************************************************************/ 1120 1121 /* 1122 * Convert a pathname into native format. This function does syntactic 1123 * cleanup, such as removing redundant separator characters. It modifies 1124 * the given pathname string in place. 1125 */ 1126 JNIEXPORT char * JNICALL 1127 JVM_NativePath(char *); 1128 1129 /* 1130 * The standard printing functions supported by the Java VM. (Should they 1131 * be renamed to JVM_* in the future? 1132 */ 1133 1134 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3), 1135 * respectively, with the following differences: 1136 * - The string written to str is always zero-terminated, also in case of 1137 * truncation (count is too small to hold the result string), unless count 1138 * is 0. In case of truncation count-1 characters are written and '\0' 1139 * appendend. 1140 * - If count is too small to hold the whole string, -1 is returned across 1141 * all platforms. */ 1142 1143 JNIEXPORT int 1144 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1145 1146 JNIEXPORT int 1147 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1148 1149 JNIEXPORT int 1150 jio_fprintf(FILE *, const char *fmt, ...); 1151 1152 JNIEXPORT int 1153 jio_vfprintf(FILE *, const char *fmt, va_list args); 1154 1155 1156 JNIEXPORT void * JNICALL 1157 JVM_RawMonitorCreate(void); 1158 1159 JNIEXPORT void JNICALL 1160 JVM_RawMonitorDestroy(void *mon); 1161 1162 JNIEXPORT jint JNICALL 1163 JVM_RawMonitorEnter(void *mon); 1164 1165 JNIEXPORT void JNICALL 1166 JVM_RawMonitorExit(void *mon); 1167 1168 /* 1169 * java.lang.management support 1170 */ 1171 JNIEXPORT void* JNICALL 1172 JVM_GetManagement(jint version); 1173 1174 /* 1175 * com.sun.tools.attach.VirtualMachine support 1176 * 1177 * Initialize the agent properties with the properties maintained in the VM. 1178 */ 1179 JNIEXPORT jobject JNICALL 1180 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1181 1182 JNIEXPORT jstring JNICALL 1183 JVM_GetTemporaryDirectory(JNIEnv *env); 1184 1185 /* Generics reflection support. 1186 * 1187 * Returns information about the given class's EnclosingMethod 1188 * attribute, if present, or null if the class had no enclosing 1189 * method. 1190 * 1191 * If non-null, the returned array contains three elements. Element 0 1192 * is the java.lang.Class of which the enclosing method is a member, 1193 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1194 * method's name and descriptor, respectively. 1195 */ 1196 JNIEXPORT jobjectArray JNICALL 1197 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1198 1199 /* ========================================================================= 1200 * The following defines a private JVM interface that the JDK can query 1201 * for the JVM version and capabilities. sun.misc.Version defines 1202 * the methods for getting the VM version and its capabilities. 1203 * 1204 * When a new bit is added, the following should be updated to provide 1205 * access to the new capability: 1206 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1207 * SDK: Version class 1208 * 1209 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1210 * JVM to query for the JDK version and capabilities. 1211 * 1212 * When a new bit is added, the following should be updated to provide 1213 * access to the new capability: 1214 * HS: JDK_Version class 1215 * SDK: JDK_GetVersionInfo0 1216 * 1217 * ========================================================================== 1218 */ 1219 typedef struct { 1220 unsigned int jvm_version; /* Encoded $VNUM as specified by JEP-223 */ 1221 unsigned int patch_version : 8; /* JEP-223 patch version */ 1222 unsigned int reserved3 : 8; 1223 unsigned int reserved1 : 16; 1224 unsigned int reserved2; 1225 1226 /* The following bits represents JVM supports that JDK has dependency on. 1227 * JDK can use these bits to determine which JVM version 1228 * and support it has to maintain runtime compatibility. 1229 * 1230 * When a new bit is added in a minor or update release, make sure 1231 * the new bit is also added in the main/baseline. 1232 */ 1233 unsigned int is_attach_supported : 1; 1234 unsigned int : 31; 1235 unsigned int : 32; 1236 unsigned int : 32; 1237 } jvm_version_info; 1238 1239 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1240 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1241 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8) 1242 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1243 1244 JNIEXPORT void JNICALL 1245 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1246 1247 typedef struct { 1248 unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */ 1249 unsigned int patch_version : 8; /* JEP-223 patch version */ 1250 unsigned int reserved3 : 8; 1251 unsigned int reserved1 : 16; 1252 unsigned int reserved2; 1253 unsigned int : 32; 1254 unsigned int : 32; 1255 unsigned int : 32; 1256 } jdk_version_info; 1257 1258 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1259 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1260 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8) 1261 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1262 1263 /* 1264 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1265 * that is dynamically looked up by JVM. 1266 */ 1267 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1268 1269 /* 1270 * This structure is used by the launcher to get the default thread 1271 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1272 * version of 1.1. As it is not supported otherwise, it has been removed 1273 * from jni.h 1274 */ 1275 typedef struct JDK1_1InitArgs { 1276 jint version; 1277 1278 char **properties; 1279 jint checkSource; 1280 jint nativeStackSize; 1281 jint javaStackSize; 1282 jint minHeapSize; 1283 jint maxHeapSize; 1284 jint verifyMode; 1285 char *classpath; 1286 1287 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1288 void (JNICALL *exit)(jint code); 1289 void (JNICALL *abort)(void); 1290 1291 jint enableClassGC; 1292 jint enableVerboseGC; 1293 jint disableAsyncGC; 1294 jint verbose; 1295 jboolean debugging; 1296 jint debugPort; 1297 } JDK1_1InitArgs; 1298 1299 1300 #ifdef __cplusplus 1301 } /* extern "C" */ 1302 1303 #endif /* __cplusplus */ 1304 1305 #endif /* !_JAVASOFT_JVM_H_ */