1 /* 2 * Copyright (c) 1997, 2016, 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 5 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 JNIEXPORT jobject JNICALL 115 JVM_InitProperties(JNIEnv *env, jobject p); 116 117 118 /* 119 * java.lang.Runtime 120 */ 121 JNIEXPORT void JNICALL 122 JVM_Halt(jint code); 123 124 JNIEXPORT void JNICALL 125 JVM_GC(void); 126 127 /* Returns the number of real-time milliseconds that have elapsed since the 128 * least-recently-inspected heap object was last inspected by the garbage 129 * collector. 130 * 131 * For simple stop-the-world collectors this value is just the time 132 * since the most recent collection. For generational collectors it is the 133 * time since the oldest generation was most recently collected. Other 134 * collectors are free to return a pessimistic estimate of the elapsed time, or 135 * simply the time since the last full collection was performed. 136 * 137 * Note that in the presence of reference objects, a given object that is no 138 * longer strongly reachable may have to be inspected multiple times before it 139 * can be reclaimed. 140 */ 141 JNIEXPORT jlong JNICALL 142 JVM_MaxObjectInspectionAge(void); 143 144 JNIEXPORT jlong JNICALL 145 JVM_TotalMemory(void); 146 147 JNIEXPORT jlong JNICALL 148 JVM_FreeMemory(void); 149 150 JNIEXPORT jlong JNICALL 151 JVM_MaxMemory(void); 152 153 JNIEXPORT jint JNICALL 154 JVM_ActiveProcessorCount(void); 155 156 JNIEXPORT void * JNICALL 157 JVM_LoadLibrary(const char *name); 158 159 JNIEXPORT void JNICALL 160 JVM_UnloadLibrary(void * handle); 161 162 JNIEXPORT void * JNICALL 163 JVM_FindLibraryEntry(void *handle, const char *name); 164 165 JNIEXPORT jboolean JNICALL 166 JVM_IsSupportedJNIVersion(jint version); 167 168 /* 169 * java.lang.Throwable 170 */ 171 JNIEXPORT void JNICALL 172 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 173 174 JNIEXPORT void JNICALL 175 JVM_GetStackTraceElements(JNIEnv *env, jobject throwable, jobjectArray elements); 176 177 /* 178 * java.lang.StackWalker 179 */ 180 enum { 181 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2, 182 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20, 183 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100 184 }; 185 186 JNIEXPORT jobject JNICALL 187 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode, 188 jint skip_frames, jint frame_count, jint start_index, 189 jobjectArray frames); 190 191 JNIEXPORT jint JNICALL 192 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor, 193 jint frame_count, jint start_index, 194 jobjectArray frames); 195 196 JNIEXPORT void JNICALL 197 JVM_ToStackTraceElement(JNIEnv* env, jobject frame, jobject stackElement); 198 199 JNIEXPORT jobjectArray JNICALL 200 JVM_GetVmArguments(JNIEnv *env); 201 202 /* 203 * java.lang.Thread 204 */ 205 JNIEXPORT void JNICALL 206 JVM_StartThread(JNIEnv *env, jobject thread); 207 208 JNIEXPORT void JNICALL 209 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 210 211 JNIEXPORT jboolean JNICALL 212 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 213 214 JNIEXPORT void JNICALL 215 JVM_SuspendThread(JNIEnv *env, jobject thread); 216 217 JNIEXPORT void JNICALL 218 JVM_ResumeThread(JNIEnv *env, jobject thread); 219 220 JNIEXPORT void JNICALL 221 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 222 223 JNIEXPORT void JNICALL 224 JVM_Yield(JNIEnv *env, jclass threadClass); 225 226 JNIEXPORT void JNICALL 227 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 228 229 JNIEXPORT jobject JNICALL 230 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 231 232 JNIEXPORT jint JNICALL 233 JVM_CountStackFrames(JNIEnv *env, jobject thread); 234 235 JNIEXPORT void JNICALL 236 JVM_Interrupt(JNIEnv *env, jobject thread); 237 238 JNIEXPORT jboolean JNICALL 239 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 240 241 JNIEXPORT jboolean JNICALL 242 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 243 244 JNIEXPORT void JNICALL 245 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 246 247 JNIEXPORT jobjectArray JNICALL 248 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 249 250 JNIEXPORT void JNICALL 251 JVM_SetNativeThreadName0(const char *name); 252 253 JNIEXPORT void JNICALL 254 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 255 256 /* getStackTrace() and getAllStackTraces() method */ 257 JNIEXPORT jobjectArray JNICALL 258 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 259 260 /* 261 * java.lang.SecurityManager 262 */ 263 JNIEXPORT jclass JNICALL 264 JVM_CurrentLoadedClass(JNIEnv *env); 265 266 JNIEXPORT jobject JNICALL 267 JVM_CurrentClassLoader(JNIEnv *env); 268 269 JNIEXPORT jobjectArray JNICALL 270 JVM_GetClassContext(JNIEnv *env); 271 272 JNIEXPORT jint JNICALL 273 JVM_ClassDepth(JNIEnv *env, jstring name); 274 275 JNIEXPORT jint JNICALL 276 JVM_ClassLoaderDepth(JNIEnv *env); 277 278 /* 279 * java.lang.Package 280 */ 281 JNIEXPORT jstring JNICALL 282 JVM_GetSystemPackage(JNIEnv *env, jstring name); 283 284 JNIEXPORT jobjectArray JNICALL 285 JVM_GetSystemPackages(JNIEnv *env); 286 287 /* 288 * java.io.ObjectInputStream 289 */ 290 JNIEXPORT jobject JNICALL 291 JVM_LatestUserDefinedLoader(JNIEnv *env); 292 293 /* 294 * java.lang.reflect.Array 295 */ 296 JNIEXPORT jint JNICALL 297 JVM_GetArrayLength(JNIEnv *env, jobject arr); 298 299 JNIEXPORT jobject JNICALL 300 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 301 302 JNIEXPORT jvalue JNICALL 303 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 304 305 JNIEXPORT void JNICALL 306 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 307 308 JNIEXPORT void JNICALL 309 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 310 unsigned char vCode); 311 312 JNIEXPORT jobject JNICALL 313 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 314 315 JNIEXPORT jobject JNICALL 316 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 317 318 /* 319 * java.lang.Class and java.lang.ClassLoader 320 */ 321 322 #define JVM_CALLER_DEPTH -1 323 324 /* 325 * Returns the immediate caller class of the native method invoking 326 * JVM_GetCallerClass. The Method.invoke and other frames due to 327 * reflection machinery are skipped. 328 * 329 * The depth parameter must be -1 (JVM_DEPTH). The caller is expected 330 * to be marked with sun.reflect.CallerSensitive. The JVM will throw 331 * an error if it is not marked propertly. 332 */ 333 JNIEXPORT jclass JNICALL 334 JVM_GetCallerClass(JNIEnv *env, int depth); 335 336 337 /* 338 * Find primitive classes 339 * utf: class name 340 */ 341 JNIEXPORT jclass JNICALL 342 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 343 344 345 /* 346 * Find a class from a boot class loader. Returns NULL if class not found. 347 */ 348 JNIEXPORT jclass JNICALL 349 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 350 351 /* 352 * Find a class from a given class loader. Throws ClassNotFoundException. 353 * name: name of class 354 * init: whether initialization is done 355 * loader: class loader to look up the class. This may not be the same as the caller's 356 * class loader. 357 * caller: initiating class. The initiating class may be null when a security 358 * manager is not installed. 359 */ 360 JNIEXPORT jclass JNICALL 361 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 362 jobject loader, jclass caller); 363 364 /* 365 * Find a class from a given class. 366 */ 367 JNIEXPORT jclass JNICALL 368 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 369 jclass from); 370 371 /* Find a loaded class cached by the VM */ 372 JNIEXPORT jclass JNICALL 373 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 374 375 /* Define a class */ 376 JNIEXPORT jclass JNICALL 377 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 378 jsize len, jobject pd); 379 380 /* Define a class with a source (added in JDK1.5) */ 381 JNIEXPORT jclass JNICALL 382 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 383 const jbyte *buf, jsize len, jobject pd, 384 const char *source); 385 386 /* 387 * Module support funcions 388 */ 389 390 JNIEXPORT void JNICALL 391 JVM_DefineModule(JNIEnv *env, jobject module, jstring version, jstring location, 392 jobjectArray packages); 393 394 JNIEXPORT void JNICALL 395 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module); 396 397 JNIEXPORT void JNICALL 398 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject to_module); 399 400 JNIEXPORT jboolean JNICALL 401 JVM_CanReadModule(JNIEnv *env, jobject asking_module, jobject source_module); 402 403 JNIEXPORT void JNICALL 404 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module); 405 406 JNIEXPORT void JNICALL 407 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package); 408 409 JNIEXPORT void JNICALL 410 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package); 411 412 JNIEXPORT jboolean JNICALL 413 JVM_IsExportedToModule(JNIEnv *env, jobject from_module, jstring package, jobject to_module); 414 415 JNIEXPORT void JNICALL 416 JVM_AddModulePackage(JNIEnv* env, jobject module, jstring package); 417 418 JNIEXPORT jobject JNICALL 419 JVM_GetModuleByPackageName(JNIEnv *env, jobject cl, jstring pkg); 420 421 /* 422 * Reflection support functions 423 */ 424 425 JNIEXPORT jstring JNICALL 426 JVM_GetClassName(JNIEnv *env, jclass cls); 427 428 JNIEXPORT jobjectArray JNICALL 429 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 430 431 JNIEXPORT jboolean JNICALL 432 JVM_IsInterface(JNIEnv *env, jclass cls); 433 434 JNIEXPORT jobjectArray JNICALL 435 JVM_GetClassSigners(JNIEnv *env, jclass cls); 436 437 JNIEXPORT void JNICALL 438 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 439 440 JNIEXPORT jobject JNICALL 441 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 442 443 JNIEXPORT jboolean JNICALL 444 JVM_IsArrayClass(JNIEnv *env, jclass cls); 445 446 JNIEXPORT jboolean JNICALL 447 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 448 449 JNIEXPORT jint JNICALL 450 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 451 452 JNIEXPORT jobjectArray JNICALL 453 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 454 455 JNIEXPORT jclass JNICALL 456 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 457 458 JNIEXPORT jstring JNICALL 459 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass); 460 461 /* Generics support (JDK 1.5) */ 462 JNIEXPORT jstring JNICALL 463 JVM_GetClassSignature(JNIEnv *env, jclass cls); 464 465 /* Annotations support (JDK 1.5) */ 466 JNIEXPORT jbyteArray JNICALL 467 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 468 469 /* Type use annotations support (JDK 1.8) */ 470 471 JNIEXPORT jbyteArray JNICALL 472 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 473 474 JNIEXPORT jbyteArray JNICALL 475 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 476 477 JNIEXPORT jbyteArray JNICALL 478 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 479 480 /* 481 * New (JDK 1.4) reflection implementation 482 */ 483 484 JNIEXPORT jobjectArray JNICALL 485 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 486 487 JNIEXPORT jobjectArray JNICALL 488 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 489 490 JNIEXPORT jobjectArray JNICALL 491 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 492 493 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 494 This returns the access flags for the class as specified in the 495 class file rather than searching the InnerClasses attribute (if 496 present) to find the source-level access flags. Only the values of 497 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 498 valid. */ 499 JNIEXPORT jint JNICALL 500 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 501 502 /* The following two reflection routines are still needed due to startup time issues */ 503 /* 504 * java.lang.reflect.Method 505 */ 506 JNIEXPORT jobject JNICALL 507 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 508 509 /* 510 * java.lang.reflect.Constructor 511 */ 512 JNIEXPORT jobject JNICALL 513 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 514 515 /* 516 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 517 */ 518 519 JNIEXPORT jobject JNICALL 520 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 521 522 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 523 (JNIEnv *env, jobject unused, jobject jcpool); 524 525 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 526 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 527 528 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 529 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 530 531 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt 532 (JNIEnv *env, jobject obj, jobject unused, jint index); 533 534 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 535 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 536 537 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 538 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 539 540 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 541 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 542 543 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 544 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 545 546 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 547 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 548 549 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt 550 (JNIEnv *env, jobject obj, jobject unused, jint index); 551 552 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt 553 (JNIEnv *env, jobject obj, jobject unused, jint index); 554 555 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 556 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 557 558 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 559 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 560 561 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 562 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 563 564 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 565 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 566 567 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 568 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 569 570 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 571 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 572 573 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt 574 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 575 576 /* 577 * Parameter reflection 578 */ 579 580 JNIEXPORT jobjectArray JNICALL 581 JVM_GetMethodParameters(JNIEnv *env, jobject method); 582 583 /* 584 * java.security.* 585 */ 586 587 JNIEXPORT jobject JNICALL 588 JVM_DoPrivileged(JNIEnv *env, jclass cls, 589 jobject action, jobject context, jboolean wrapException); 590 591 JNIEXPORT jobject JNICALL 592 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 593 594 JNIEXPORT jobject JNICALL 595 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 596 597 /* 598 * Signal support, used to implement the shutdown sequence. Every VM must 599 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 600 * (^C) and the latter for external termination (kill, system shutdown, etc.). 601 * Other platform-dependent signal values may also be supported. 602 */ 603 604 JNIEXPORT void * JNICALL 605 JVM_RegisterSignal(jint sig, void *handler); 606 607 JNIEXPORT jboolean JNICALL 608 JVM_RaiseSignal(jint sig); 609 610 JNIEXPORT jint JNICALL 611 JVM_FindSignal(const char *name); 612 613 /* 614 * Retrieve the assertion directives for the specified class. 615 */ 616 JNIEXPORT jboolean JNICALL 617 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 618 619 /* 620 * Retrieve the assertion directives from the VM. 621 */ 622 JNIEXPORT jobject JNICALL 623 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 624 625 /* 626 * java.util.concurrent.atomic.AtomicLong 627 */ 628 JNIEXPORT jboolean JNICALL 629 JVM_SupportsCX8(void); 630 631 /* 632 * com.sun.dtrace.jsdt support 633 */ 634 635 #define JVM_TRACING_DTRACE_VERSION 1 636 637 /* 638 * Structure to pass one probe description to JVM 639 */ 640 typedef struct { 641 jmethodID method; 642 jstring function; 643 jstring name; 644 void* reserved[4]; // for future use 645 } JVM_DTraceProbe; 646 647 /** 648 * Encapsulates the stability ratings for a DTrace provider field 649 */ 650 typedef struct { 651 jint nameStability; 652 jint dataStability; 653 jint dependencyClass; 654 } JVM_DTraceInterfaceAttributes; 655 656 /* 657 * Structure to pass one provider description to JVM 658 */ 659 typedef struct { 660 jstring name; 661 JVM_DTraceProbe* probes; 662 jint probe_count; 663 JVM_DTraceInterfaceAttributes providerAttributes; 664 JVM_DTraceInterfaceAttributes moduleAttributes; 665 JVM_DTraceInterfaceAttributes functionAttributes; 666 JVM_DTraceInterfaceAttributes nameAttributes; 667 JVM_DTraceInterfaceAttributes argsAttributes; 668 void* reserved[4]; // for future use 669 } JVM_DTraceProvider; 670 671 /* 672 * Get the version number the JVM was built with 673 */ 674 JNIEXPORT jint JNICALL 675 JVM_DTraceGetVersion(JNIEnv* env); 676 677 /* 678 * Register new probe with given signature, return global handle 679 * 680 * The version passed in is the version that the library code was 681 * built with. 682 */ 683 JNIEXPORT jlong JNICALL 684 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 685 jint providers_count, JVM_DTraceProvider* providers); 686 687 /* 688 * Check JSDT probe 689 */ 690 JNIEXPORT jboolean JNICALL 691 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 692 693 /* 694 * Destroy custom DOF 695 */ 696 JNIEXPORT void JNICALL 697 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle); 698 699 /* 700 * Check to see if DTrace is supported by OS 701 */ 702 JNIEXPORT jboolean JNICALL 703 JVM_DTraceIsSupported(JNIEnv* env); 704 705 /************************************************************************* 706 PART 2: Support for the Verifier and Class File Format Checker 707 ************************************************************************/ 708 /* 709 * Return the class name in UTF format. The result is valid 710 * until JVM_ReleaseUTf is called. 711 * 712 * The caller must treat the string as a constant and not modify it 713 * in any way. 714 */ 715 JNIEXPORT const char * JNICALL 716 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 717 718 /* 719 * Returns the constant pool types in the buffer provided by "types." 720 */ 721 JNIEXPORT void JNICALL 722 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 723 724 /* 725 * Returns the number of Constant Pool entries. 726 */ 727 JNIEXPORT jint JNICALL 728 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 729 730 /* 731 * Returns the number of *declared* fields or methods. 732 */ 733 JNIEXPORT jint JNICALL 734 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 735 736 JNIEXPORT jint JNICALL 737 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 738 739 /* 740 * Returns the CP indexes of exceptions raised by a given method. 741 * Places the result in the given buffer. 742 * 743 * The method is identified by method_index. 744 */ 745 JNIEXPORT void JNICALL 746 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 747 unsigned short *exceptions); 748 /* 749 * Returns the number of exceptions raised by a given method. 750 * The method is identified by method_index. 751 */ 752 JNIEXPORT jint JNICALL 753 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 754 755 /* 756 * Returns the byte code sequence of a given method. 757 * Places the result in the given buffer. 758 * 759 * The method is identified by method_index. 760 */ 761 JNIEXPORT void JNICALL 762 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 763 unsigned char *code); 764 765 /* 766 * Returns the length of the byte code sequence of a given method. 767 * The method is identified by method_index. 768 */ 769 JNIEXPORT jint JNICALL 770 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 771 772 /* 773 * A structure used to a capture exception table entry in a Java method. 774 */ 775 typedef struct { 776 jint start_pc; 777 jint end_pc; 778 jint handler_pc; 779 jint catchType; 780 } JVM_ExceptionTableEntryType; 781 782 /* 783 * Returns the exception table entry at entry_index of a given method. 784 * Places the result in the given buffer. 785 * 786 * The method is identified by method_index. 787 */ 788 JNIEXPORT void JNICALL 789 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 790 jint entry_index, 791 JVM_ExceptionTableEntryType *entry); 792 793 /* 794 * Returns the length of the exception table of a given method. 795 * The method is identified by method_index. 796 */ 797 JNIEXPORT jint JNICALL 798 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 799 800 /* 801 * Returns the modifiers of a given field. 802 * The field is identified by field_index. 803 */ 804 JNIEXPORT jint JNICALL 805 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 806 807 /* 808 * Returns the modifiers of a given method. 809 * The method is identified by method_index. 810 */ 811 JNIEXPORT jint JNICALL 812 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 813 814 /* 815 * Returns the number of local variables of a given method. 816 * The method is identified by method_index. 817 */ 818 JNIEXPORT jint JNICALL 819 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 820 821 /* 822 * Returns the number of arguments (including this pointer) of a given method. 823 * The method is identified by method_index. 824 */ 825 JNIEXPORT jint JNICALL 826 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 827 828 /* 829 * Returns the maximum amount of stack (in words) used by a given method. 830 * The method is identified by method_index. 831 */ 832 JNIEXPORT jint JNICALL 833 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 834 835 /* 836 * Is a given method a constructor. 837 * The method is identified by method_index. 838 */ 839 JNIEXPORT jboolean JNICALL 840 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 841 842 /* 843 * Is the given method generated by the VM. 844 * The method is identified by method_index. 845 */ 846 JNIEXPORT jboolean JNICALL 847 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 848 849 /* 850 * Returns the name of a given method in UTF format. 851 * The result remains valid until JVM_ReleaseUTF is called. 852 * 853 * The caller must treat the string as a constant and not modify it 854 * in any way. 855 */ 856 JNIEXPORT const char * JNICALL 857 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 858 859 /* 860 * Returns the signature of a given method in UTF format. 861 * The result remains valid until JVM_ReleaseUTF is called. 862 * 863 * The caller must treat the string as a constant and not modify it 864 * in any way. 865 */ 866 JNIEXPORT const char * JNICALL 867 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 868 869 /* 870 * Returns the name of the field referred to at a given constant pool 871 * index. 872 * 873 * The result is in UTF format and remains valid until JVM_ReleaseUTF 874 * is called. 875 * 876 * The caller must treat the string as a constant and not modify it 877 * in any way. 878 */ 879 JNIEXPORT const char * JNICALL 880 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 881 882 /* 883 * Returns the name of the method referred to at a given constant pool 884 * index. 885 * 886 * The result is in UTF format and remains valid until JVM_ReleaseUTF 887 * is called. 888 * 889 * The caller must treat the string as a constant and not modify it 890 * in any way. 891 */ 892 JNIEXPORT const char * JNICALL 893 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 894 895 /* 896 * Returns the signature of the method referred to at a given constant pool 897 * index. 898 * 899 * The result is in UTF format and remains valid until JVM_ReleaseUTF 900 * is called. 901 * 902 * The caller must treat the string as a constant and not modify it 903 * in any way. 904 */ 905 JNIEXPORT const char * JNICALL 906 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 907 908 /* 909 * Returns the signature of the field referred to at a given constant pool 910 * index. 911 * 912 * The result is in UTF format and remains valid until JVM_ReleaseUTF 913 * 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_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 920 921 /* 922 * Returns the class name referred to at a given constant pool index. 923 * 924 * The result is in UTF format and remains valid until JVM_ReleaseUTF 925 * is called. 926 * 927 * The caller must treat the string as a constant and not modify it 928 * in any way. 929 */ 930 JNIEXPORT const char * JNICALL 931 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 932 933 /* 934 * Returns the class name referred to at a given constant pool index. 935 * 936 * The constant pool entry must refer to a CONSTANT_Fieldref. 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_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 946 947 /* 948 * Returns the class name referred to at a given constant pool index. 949 * 950 * The constant pool entry must refer to CONSTANT_Methodref or 951 * CONSTANT_InterfaceMethodref. 952 * 953 * The result is in UTF format and remains valid until JVM_ReleaseUTF 954 * is called. 955 * 956 * The caller must treat the string as a constant and not modify it 957 * in any way. 958 */ 959 JNIEXPORT const char * JNICALL 960 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 961 962 /* 963 * Returns the modifiers of a field in calledClass. The field is 964 * referred to in class cb at constant pool entry index. 965 * 966 * The caller must treat the string as a constant and not modify it 967 * in any way. 968 * 969 * Returns -1 if the field does not exist in calledClass. 970 */ 971 JNIEXPORT jint JNICALL 972 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 973 974 /* 975 * Returns the modifiers of a method in calledClass. The method is 976 * referred to in class cb at constant pool entry index. 977 * 978 * Returns -1 if the method does not exist in calledClass. 979 */ 980 JNIEXPORT jint JNICALL 981 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 982 983 /* 984 * Releases the UTF string obtained from the VM. 985 */ 986 JNIEXPORT void JNICALL 987 JVM_ReleaseUTF(const char *utf); 988 989 /* 990 * Compare if two classes are in the same package. 991 */ 992 JNIEXPORT jboolean JNICALL 993 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 994 995 /* Get classfile constants */ 996 #include "classfile_constants.h" 997 998 /* 999 * A function defined by the byte-code verifier and called by the VM. 1000 * This is not a function implemented in the VM. 1001 * 1002 * Returns JNI_FALSE if verification fails. A detailed error message 1003 * will be places in msg_buf, whose length is specified by buf_len. 1004 */ 1005 typedef jboolean (*verifier_fn_t)(JNIEnv *env, 1006 jclass cb, 1007 char * msg_buf, 1008 jint buf_len); 1009 1010 1011 /* 1012 * Support for a VM-independent class format checker. 1013 */ 1014 typedef struct { 1015 unsigned long code; /* byte code */ 1016 unsigned long excs; /* exceptions */ 1017 unsigned long etab; /* catch table */ 1018 unsigned long lnum; /* line number */ 1019 unsigned long lvar; /* local vars */ 1020 } method_size_info; 1021 1022 typedef struct { 1023 unsigned int constants; /* constant pool */ 1024 unsigned int fields; 1025 unsigned int methods; 1026 unsigned int interfaces; 1027 unsigned int fields2; /* number of static 2-word fields */ 1028 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1029 1030 method_size_info clinit; /* memory used in clinit */ 1031 method_size_info main; /* used everywhere else */ 1032 } class_size_info; 1033 1034 /* 1035 * Functions defined in libjava.so to perform string conversions. 1036 * 1037 */ 1038 1039 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1040 1041 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b); 1042 1043 /* This is the function defined in libjava.so that performs class 1044 * format checks. This functions fills in size information about 1045 * the class file and returns: 1046 * 1047 * 0: good 1048 * -1: out of memory 1049 * -2: bad format 1050 * -3: unsupported version 1051 * -4: bad class name 1052 */ 1053 1054 typedef jint (*check_format_fn_t)(char *class_name, 1055 unsigned char *data, 1056 unsigned int data_size, 1057 class_size_info *class_size, 1058 char *message_buffer, 1059 jint buffer_length, 1060 jboolean measure_only, 1061 jboolean check_relaxed); 1062 1063 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1064 JVM_ACC_FINAL | \ 1065 JVM_ACC_SUPER | \ 1066 JVM_ACC_INTERFACE | \ 1067 JVM_ACC_ABSTRACT | \ 1068 JVM_ACC_ANNOTATION | \ 1069 JVM_ACC_ENUM | \ 1070 JVM_ACC_SYNTHETIC) 1071 1072 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1073 JVM_ACC_PRIVATE | \ 1074 JVM_ACC_PROTECTED | \ 1075 JVM_ACC_STATIC | \ 1076 JVM_ACC_FINAL | \ 1077 JVM_ACC_VOLATILE | \ 1078 JVM_ACC_TRANSIENT | \ 1079 JVM_ACC_ENUM | \ 1080 JVM_ACC_SYNTHETIC) 1081 1082 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1083 JVM_ACC_PRIVATE | \ 1084 JVM_ACC_PROTECTED | \ 1085 JVM_ACC_STATIC | \ 1086 JVM_ACC_FINAL | \ 1087 JVM_ACC_SYNCHRONIZED | \ 1088 JVM_ACC_BRIDGE | \ 1089 JVM_ACC_VARARGS | \ 1090 JVM_ACC_NATIVE | \ 1091 JVM_ACC_ABSTRACT | \ 1092 JVM_ACC_STRICT | \ 1093 JVM_ACC_SYNTHETIC) 1094 1095 /* 1096 * This is the function defined in libjava.so to perform path 1097 * canonicalization. VM call this function before opening jar files 1098 * to load system classes. 1099 * 1100 */ 1101 1102 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1103 1104 /************************************************************************* 1105 PART 3: I/O and Network Support 1106 ************************************************************************/ 1107 1108 /* 1109 * Convert a pathname into native format. This function does syntactic 1110 * cleanup, such as removing redundant separator characters. It modifies 1111 * the given pathname string in place. 1112 */ 1113 JNIEXPORT char * JNICALL 1114 JVM_NativePath(char *); 1115 1116 /* 1117 * The standard printing functions supported by the Java VM. (Should they 1118 * be renamed to JVM_* in the future? 1119 */ 1120 1121 /* 1122 * BE CAREFUL! The following functions do not implement the 1123 * full feature set of standard C printf formats. 1124 */ 1125 int 1126 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1127 1128 int 1129 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1130 1131 int 1132 jio_fprintf(FILE *, const char *fmt, ...); 1133 1134 int 1135 jio_vfprintf(FILE *, const char *fmt, va_list args); 1136 1137 1138 JNIEXPORT void * JNICALL 1139 JVM_RawMonitorCreate(void); 1140 1141 JNIEXPORT void JNICALL 1142 JVM_RawMonitorDestroy(void *mon); 1143 1144 JNIEXPORT jint JNICALL 1145 JVM_RawMonitorEnter(void *mon); 1146 1147 JNIEXPORT void JNICALL 1148 JVM_RawMonitorExit(void *mon); 1149 1150 /* 1151 * java.lang.management support 1152 */ 1153 JNIEXPORT void* JNICALL 1154 JVM_GetManagement(jint version); 1155 1156 /* 1157 * com.sun.tools.attach.VirtualMachine support 1158 * 1159 * Initialize the agent properties with the properties maintained in the VM. 1160 */ 1161 JNIEXPORT jobject JNICALL 1162 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1163 1164 JNIEXPORT jstring JNICALL 1165 JVM_GetTemporaryDirectory(JNIEnv *env); 1166 1167 /* Generics reflection support. 1168 * 1169 * Returns information about the given class's EnclosingMethod 1170 * attribute, if present, or null if the class had no enclosing 1171 * method. 1172 * 1173 * If non-null, the returned array contains three elements. Element 0 1174 * is the java.lang.Class of which the enclosing method is a member, 1175 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1176 * method's name and descriptor, respectively. 1177 */ 1178 JNIEXPORT jobjectArray JNICALL 1179 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1180 1181 /* ========================================================================= 1182 * The following defines a private JVM interface that the JDK can query 1183 * for the JVM version and capabilities. sun.misc.Version defines 1184 * the methods for getting the VM version and its capabilities. 1185 * 1186 * When a new bit is added, the following should be updated to provide 1187 * access to the new capability: 1188 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1189 * SDK: Version class 1190 * 1191 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1192 * JVM to query for the JDK version and capabilities. 1193 * 1194 * When a new bit is added, the following should be updated to provide 1195 * access to the new capability: 1196 * HS: JDK_Version class 1197 * SDK: JDK_GetVersionInfo0 1198 * 1199 * ========================================================================== 1200 */ 1201 typedef struct { 1202 unsigned int jvm_version; /* Encoded $VNUM as specified by JEP-223 */ 1203 unsigned int patch_version : 8; /* JEP-223 patch version */ 1204 unsigned int reserved3 : 8; 1205 unsigned int reserved1 : 16; 1206 unsigned int reserved2; 1207 1208 /* The following bits represents JVM supports that JDK has dependency on. 1209 * JDK can use these bits to determine which JVM version 1210 * and support it has to maintain runtime compatibility. 1211 * 1212 * When a new bit is added in a minor or update release, make sure 1213 * the new bit is also added in the main/baseline. 1214 */ 1215 unsigned int is_attach_supported : 1; 1216 unsigned int : 31; 1217 unsigned int : 32; 1218 unsigned int : 32; 1219 } jvm_version_info; 1220 1221 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1222 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1223 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8) 1224 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1225 1226 JNIEXPORT void JNICALL 1227 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1228 1229 typedef struct { 1230 unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */ 1231 unsigned int patch_version : 8; /* JEP-223 patch version */ 1232 unsigned int reserved3 : 8; 1233 unsigned int reserved1 : 16; 1234 unsigned int reserved2; 1235 1236 /* The following bits represents new JDK supports that VM has dependency on. 1237 * VM implementation can use these bits to determine which JDK version 1238 * and support it has to maintain runtime compatibility. 1239 * 1240 * When a new bit is added in a minor or update release, make sure 1241 * the new bit is also added in the main/baseline. 1242 */ 1243 unsigned int thread_park_blocker : 1; 1244 unsigned int post_vm_init_hook_enabled : 1; 1245 unsigned int pending_list_uses_discovered_field : 1; 1246 unsigned int : 29; 1247 unsigned int : 32; 1248 unsigned int : 32; 1249 } jdk_version_info; 1250 1251 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1252 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1253 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8) 1254 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1255 1256 /* 1257 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1258 * that is dynamically looked up by JVM. 1259 */ 1260 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1261 1262 /* 1263 * This structure is used by the launcher to get the default thread 1264 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1265 * version of 1.1. As it is not supported otherwise, it has been removed 1266 * from jni.h 1267 */ 1268 typedef struct JDK1_1InitArgs { 1269 jint version; 1270 1271 char **properties; 1272 jint checkSource; 1273 jint nativeStackSize; 1274 jint javaStackSize; 1275 jint minHeapSize; 1276 jint maxHeapSize; 1277 jint verifyMode; 1278 char *classpath; 1279 1280 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1281 void (JNICALL *exit)(jint code); 1282 void (JNICALL *abort)(void); 1283 1284 jint enableClassGC; 1285 jint enableVerboseGC; 1286 jint disableAsyncGC; 1287 jint verbose; 1288 jboolean debugging; 1289 jint debugPort; 1290 } JDK1_1InitArgs; 1291 1292 1293 #ifdef __cplusplus 1294 } /* extern "C" */ 1295 1296 #endif /* __cplusplus */ 1297 1298 #endif /* !_JAVASOFT_JVM_H_ */