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 /*
 350  * Find a class from a boot class loader. Returns NULL if class not found.
 351  */
 352 JNIEXPORT jclass JNICALL
 353 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
 354 
 355 /*
 356  * Find a class from a given class loader.  Throws ClassNotFoundException.
 357  *  name:   name of class
 358  *  init:   whether initialization is done
 359  *  loader: class loader to look up the class. This may not be the same as the caller's
 360  *          class loader.
 361  *  caller: initiating class. The initiating class may be null when a security
 362  *          manager is not installed.
 363  */
 364 JNIEXPORT jclass JNICALL
 365 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
 366                         jobject loader, jclass caller);
 367 
 368 /*
 369  * Find a class from a given class.
 370  */
 371 JNIEXPORT jclass JNICALL
 372 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
 373                              jclass from);
 374 
 375 /* Find a loaded class cached by the VM */
 376 JNIEXPORT jclass JNICALL
 377 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
 378 
 379 /* Define a class */
 380 JNIEXPORT jclass JNICALL
 381 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
 382                 jsize len, jobject pd);
 383 
 384 /* Define a class with a source (added in JDK1.5) */
 385 JNIEXPORT jclass JNICALL
 386 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
 387                           const jbyte *buf, jsize len, jobject pd,
 388                           const char *source);
 389 
 390 /*
 391  * Module support funcions
 392  */
 393 
 394 /*
 395  * Define a module with the specified packages and bind the module to the
 396  * given class loader.
 397  *  module:       module to define
 398  *  is_open:      specifies if module is open (currently ignored)
 399  *  version:      the module version
 400  *  location:     the module location
 401  *  packages:     list of packages in the module
 402  *  num_packages: number of packages in the module
 403  */
 404 JNIEXPORT void JNICALL
 405 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
 406                  jstring location, const char* const* packages, jsize num_packages);
 407 
 408 /*
 409  * Set the boot loader's unnamed module.
 410  *  module: boot loader's unnamed module
 411  */
 412 JNIEXPORT void JNICALL
 413 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
 414 
 415 /*
 416  * Do a qualified export of a package.
 417  *  from_module: module containing the package to export
 418  *  package:     name of the package to export
 419  *  to_module:   module to export the package to
 420  */
 421 JNIEXPORT void JNICALL
 422 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
 423 
 424 /*
 425  * Do an export of a package to all unnamed modules.
 426  *  from_module: module containing the package to export
 427  *  package:     name of the package to export to all unnamed modules
 428  */
 429 JNIEXPORT void JNICALL
 430 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
 431 
 432 /*
 433  * Do an unqualified export of a package.
 434  *  from_module: module containing the package to export
 435  *  package:     name of the package to export
 436  */
 437 JNIEXPORT void JNICALL
 438 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
 439 
 440 /*
 441  * Add a module to the list of modules that a given module can read.
 442  *  from_module:   module requesting read access
 443  *  source_module: module that from_module wants to read
 444  */
 445 JNIEXPORT void JNICALL
 446 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
 447 
 448 /*
 449  * Reflection support functions
 450  */
 451 
 452 JNIEXPORT jstring JNICALL
 453 JVM_InitClassName(JNIEnv *env, jclass cls);
 454 
 455 JNIEXPORT jobjectArray JNICALL
 456 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
 457 
 458 JNIEXPORT jboolean JNICALL
 459 JVM_IsInterface(JNIEnv *env, jclass cls);
 460 
 461 JNIEXPORT jobjectArray JNICALL
 462 JVM_GetClassSigners(JNIEnv *env, jclass cls);
 463 
 464 JNIEXPORT void JNICALL
 465 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
 466 
 467 JNIEXPORT jobject JNICALL
 468 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
 469 
 470 JNIEXPORT jboolean JNICALL
 471 JVM_IsArrayClass(JNIEnv *env, jclass cls);
 472 
 473 JNIEXPORT jboolean JNICALL
 474 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
 475 
 476 JNIEXPORT jint JNICALL
 477 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
 478 
 479 JNIEXPORT jobjectArray JNICALL
 480 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
 481 
 482 JNIEXPORT jclass JNICALL
 483 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
 484 
 485 JNIEXPORT jstring JNICALL
 486 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
 487 
 488 /* Generics support (JDK 1.5) */
 489 JNIEXPORT jstring JNICALL
 490 JVM_GetClassSignature(JNIEnv *env, jclass cls);
 491 
 492 /* Annotations support (JDK 1.5) */
 493 JNIEXPORT jbyteArray JNICALL
 494 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
 495 
 496 /* Type use annotations support (JDK 1.8) */
 497 
 498 JNIEXPORT jbyteArray JNICALL
 499 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
 500 
 501 JNIEXPORT jbyteArray JNICALL
 502 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
 503 
 504 JNIEXPORT jbyteArray JNICALL
 505 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
 506 
 507 /*
 508  * New (JDK 1.4) reflection implementation
 509  */
 510 
 511 JNIEXPORT jobjectArray JNICALL
 512 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 513 
 514 JNIEXPORT jobjectArray JNICALL
 515 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 516 
 517 JNIEXPORT jobjectArray JNICALL
 518 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 519 
 520 JNIEXPORT jobjectArray JNICALL
 521 JVM_GetRecordComponentNames(JNIEnv *env, jclass ofClass);
 522 
 523 JNIEXPORT jboolean JNICALL
 524 JVM_IsRecord(JNIEnv *env, jclass cls);
 525 
 526 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
 527    This returns the access flags for the class as specified in the
 528    class file rather than searching the InnerClasses attribute (if
 529    present) to find the source-level access flags. Only the values of
 530    the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
 531    valid. */
 532 JNIEXPORT jint JNICALL
 533 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
 534 
 535 /* Nestmates - since JDK 11 */
 536 
 537 JNIEXPORT jboolean JNICALL
 538 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
 539 
 540 JNIEXPORT jclass JNICALL
 541 JVM_GetNestHost(JNIEnv *env, jclass current);
 542 
 543 JNIEXPORT jobjectArray JNICALL
 544 JVM_GetNestMembers(JNIEnv *env, jclass current);
 545 
 546 JNIEXPORT jobjectArray JNICALL
 547 JVM_GetPermittedSubtypes(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  * A function defined by the byte-code verifier and called by the VM.
1052  * This is not a function implemented in the VM.
1053  *
1054  * Returns JNI_FALSE if verification fails. A detailed error message
1055  * will be places in msg_buf, whose length is specified by buf_len.
1056  */
1057 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1058                                   jclass cb,
1059                                   char * msg_buf,
1060                                   jint buf_len);
1061 
1062 
1063 /*
1064  * Support for a VM-independent class format checker.
1065  */
1066 typedef struct {
1067     unsigned long code;    /* byte code */
1068     unsigned long excs;    /* exceptions */
1069     unsigned long etab;    /* catch table */
1070     unsigned long lnum;    /* line number */
1071     unsigned long lvar;    /* local vars */
1072 } method_size_info;
1073 
1074 typedef struct {
1075     unsigned int constants;    /* constant pool */
1076     unsigned int fields;
1077     unsigned int methods;
1078     unsigned int interfaces;
1079     unsigned int fields2;      /* number of static 2-word fields */
1080     unsigned int innerclasses; /* # of records in InnerClasses attr */
1081 
1082     method_size_info clinit;   /* memory used in clinit */
1083     method_size_info main;     /* used everywhere else */
1084 } class_size_info;
1085 
1086 /*
1087  * Functions defined in libjava.so to perform string conversions.
1088  *
1089  */
1090 
1091 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1092 
1093 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1094 
1095 /* This is the function defined in libjava.so that performs class
1096  * format checks. This functions fills in size information about
1097  * the class file and returns:
1098  *
1099  *   0: good
1100  *  -1: out of memory
1101  *  -2: bad format
1102  *  -3: unsupported version
1103  *  -4: bad class name
1104  */
1105 
1106 typedef jint (*check_format_fn_t)(char *class_name,
1107                                   unsigned char *data,
1108                                   unsigned int data_size,
1109                                   class_size_info *class_size,
1110                                   char *message_buffer,
1111                                   jint buffer_length,
1112                                   jboolean measure_only,
1113                                   jboolean check_relaxed);
1114 
1115 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1116                                         JVM_ACC_FINAL | \
1117                                         JVM_ACC_SUPER | \
1118                                         JVM_ACC_INTERFACE | \
1119                                         JVM_ACC_ABSTRACT | \
1120                                         JVM_ACC_ANNOTATION | \
1121                                         JVM_ACC_ENUM | \
1122                                         JVM_ACC_SYNTHETIC)
1123 
1124 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1125                                         JVM_ACC_PRIVATE | \
1126                                         JVM_ACC_PROTECTED | \
1127                                         JVM_ACC_STATIC | \
1128                                         JVM_ACC_FINAL | \
1129                                         JVM_ACC_VOLATILE | \
1130                                         JVM_ACC_TRANSIENT | \
1131                                         JVM_ACC_ENUM | \
1132                                         JVM_ACC_SYNTHETIC)
1133 
1134 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1135                                          JVM_ACC_PRIVATE | \
1136                                          JVM_ACC_PROTECTED | \
1137                                          JVM_ACC_STATIC | \
1138                                          JVM_ACC_FINAL | \
1139                                          JVM_ACC_SYNCHRONIZED | \
1140                                          JVM_ACC_BRIDGE | \
1141                                          JVM_ACC_VARARGS | \
1142                                          JVM_ACC_NATIVE | \
1143                                          JVM_ACC_ABSTRACT | \
1144                                          JVM_ACC_STRICT | \
1145                                          JVM_ACC_SYNTHETIC)
1146 
1147 /*
1148  * This is the function defined in libjava.so to perform path
1149  * canonicalization. VM call this function before opening jar files
1150  * to load system classes.
1151  *
1152  */
1153 
1154 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1155 
1156 /*************************************************************************
1157  PART 3: I/O and Network Support
1158  ************************************************************************/
1159 
1160 /*
1161  * Convert a pathname into native format.  This function does syntactic
1162  * cleanup, such as removing redundant separator characters.  It modifies
1163  * the given pathname string in place.
1164  */
1165 JNIEXPORT char * JNICALL
1166 JVM_NativePath(char *);
1167 
1168 /*
1169  * The standard printing functions supported by the Java VM. (Should they
1170  * be renamed to JVM_* in the future?
1171  */
1172 
1173 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1174  *  respectively, with the following differences:
1175  * - The string written to str is always zero-terminated, also in case of
1176  *   truncation (count is too small to hold the result string), unless count
1177  *   is 0. In case of truncation count-1 characters are written and '\0'
1178  *   appendend.
1179  * - If count is too small to hold the whole string, -1 is returned across
1180  *   all platforms. */
1181 
1182 JNIEXPORT int
1183 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1184 
1185 JNIEXPORT int
1186 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1187 
1188 JNIEXPORT int
1189 jio_fprintf(FILE *, const char *fmt, ...);
1190 
1191 JNIEXPORT int
1192 jio_vfprintf(FILE *, const char *fmt, va_list args);
1193 
1194 
1195 JNIEXPORT void * JNICALL
1196 JVM_RawMonitorCreate(void);
1197 
1198 JNIEXPORT void JNICALL
1199 JVM_RawMonitorDestroy(void *mon);
1200 
1201 JNIEXPORT jint JNICALL
1202 JVM_RawMonitorEnter(void *mon);
1203 
1204 JNIEXPORT void JNICALL
1205 JVM_RawMonitorExit(void *mon);
1206 
1207 /*
1208  * java.lang.management support
1209  */
1210 JNIEXPORT void* JNICALL
1211 JVM_GetManagement(jint version);
1212 
1213 /*
1214  * com.sun.tools.attach.VirtualMachine support
1215  *
1216  * Initialize the agent properties with the properties maintained in the VM.
1217  */
1218 JNIEXPORT jobject JNICALL
1219 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1220 
1221 JNIEXPORT jstring JNICALL
1222 JVM_GetTemporaryDirectory(JNIEnv *env);
1223 
1224 /* Generics reflection support.
1225  *
1226  * Returns information about the given class's EnclosingMethod
1227  * attribute, if present, or null if the class had no enclosing
1228  * method.
1229  *
1230  * If non-null, the returned array contains three elements. Element 0
1231  * is the java.lang.Class of which the enclosing method is a member,
1232  * and elements 1 and 2 are the java.lang.Strings for the enclosing
1233  * method's name and descriptor, respectively.
1234  */
1235 JNIEXPORT jobjectArray JNICALL
1236 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1237 
1238 /* =========================================================================
1239  * The following defines a private JVM interface that the JDK can query
1240  * for the JVM version and capabilities.  sun.misc.Version defines
1241  * the methods for getting the VM version and its capabilities.
1242  *
1243  * When a new bit is added, the following should be updated to provide
1244  * access to the new capability:
1245  *    HS:   JVM_GetVersionInfo and Abstract_VM_Version class
1246  *    SDK:  Version class
1247  *
1248  * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1249  * JVM to query for the JDK version and capabilities.
1250  *
1251  * When a new bit is added, the following should be updated to provide
1252  * access to the new capability:
1253  *    HS:   JDK_Version class
1254  *    SDK:  JDK_GetVersionInfo0
1255  *
1256  * ==========================================================================
1257  */
1258 typedef struct {
1259     unsigned int jvm_version;  /* Encoded $VNUM as specified by JEP-223 */
1260     unsigned int patch_version : 8; /* JEP-223 patch version */
1261     unsigned int reserved3 : 8;
1262     unsigned int reserved1 : 16;
1263     unsigned int reserved2;
1264 
1265     /* The following bits represents JVM supports that JDK has dependency on.
1266      * JDK can use these bits to determine which JVM version
1267      * and support it has to maintain runtime compatibility.
1268      *
1269      * When a new bit is added in a minor or update release, make sure
1270      * the new bit is also added in the main/baseline.
1271      */
1272     unsigned int is_attach_supported : 1;
1273     unsigned int : 31;
1274     unsigned int : 32;
1275     unsigned int : 32;
1276 } jvm_version_info;
1277 
1278 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1279 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1280 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1281 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1282 
1283 JNIEXPORT void JNICALL
1284 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1285 
1286 typedef struct {
1287     unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1288     unsigned int patch_version : 8; /* JEP-223 patch version */
1289     unsigned int reserved3 : 8;
1290     unsigned int reserved1 : 16;
1291     unsigned int reserved2;
1292     unsigned int : 32;
1293     unsigned int : 32;
1294     unsigned int : 32;
1295 } jdk_version_info;
1296 
1297 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1298 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1299 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1300 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1301 
1302 /*
1303  * This is the function JDK_GetVersionInfo0 defined in libjava.so
1304  * that is dynamically looked up by JVM.
1305  */
1306 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1307 
1308 /*
1309  * This structure is used by the launcher to get the default thread
1310  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1311  * version of 1.1.  As it is not supported otherwise, it has been removed
1312  * from jni.h
1313  */
1314 typedef struct JDK1_1InitArgs {
1315     jint version;
1316 
1317     char **properties;
1318     jint checkSource;
1319     jint nativeStackSize;
1320     jint javaStackSize;
1321     jint minHeapSize;
1322     jint maxHeapSize;
1323     jint verifyMode;
1324     char *classpath;
1325 
1326     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1327     void (JNICALL *exit)(jint code);
1328     void (JNICALL *abort)(void);
1329 
1330     jint enableClassGC;
1331     jint enableVerboseGC;
1332     jint disableAsyncGC;
1333     jint verbose;
1334     jboolean debugging;
1335     jint debugPort;
1336 } JDK1_1InitArgs;
1337 
1338 
1339 #ifdef __cplusplus
1340 } /* extern "C" */
1341 
1342 #endif /* __cplusplus */
1343 
1344 #endif /* !_JAVASOFT_JVM_H_ */