1 /*
   2  * Copyright (c) 1997, 2018, 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_BeforeHalt();
 123 
 124 JNIEXPORT void JNICALL
 125 JVM_Halt(jint code);
 126 
 127 JNIEXPORT void JNICALL
 128 JVM_GC(void);
 129 
 130 /* Returns the number of real-time milliseconds that have elapsed since the
 131  * least-recently-inspected heap object was last inspected by the garbage
 132  * collector.
 133  *
 134  * For simple stop-the-world collectors this value is just the time
 135  * since the most recent collection.  For generational collectors it is the
 136  * time since the oldest generation was most recently collected.  Other
 137  * collectors are free to return a pessimistic estimate of the elapsed time, or
 138  * simply the time since the last full collection was performed.
 139  *
 140  * Note that in the presence of reference objects, a given object that is no
 141  * longer strongly reachable may have to be inspected multiple times before it
 142  * can be reclaimed.
 143  */
 144 JNIEXPORT jlong JNICALL
 145 JVM_MaxObjectInspectionAge(void);
 146 
 147 JNIEXPORT jlong JNICALL
 148 JVM_TotalMemory(void);
 149 
 150 JNIEXPORT jlong JNICALL
 151 JVM_FreeMemory(void);
 152 
 153 JNIEXPORT jlong JNICALL
 154 JVM_MaxMemory(void);
 155 
 156 JNIEXPORT jint JNICALL
 157 JVM_ActiveProcessorCount(void);
 158 
 159 JNIEXPORT void * JNICALL
 160 JVM_LoadLibrary(const char *name);
 161 
 162 JNIEXPORT void JNICALL
 163 JVM_UnloadLibrary(void * handle);
 164 
 165 JNIEXPORT void * JNICALL
 166 JVM_FindLibraryEntry(void *handle, const char *name);
 167 
 168 JNIEXPORT jboolean JNICALL
 169 JVM_IsSupportedJNIVersion(jint version);
 170 
 171 JNIEXPORT jobjectArray JNICALL
 172 JVM_GetVmArguments(JNIEnv *env);
 173 
 174 JNIEXPORT void JNICALL
 175 JVM_InitializeFromArchive(JNIEnv* env, jclass cls);
 176 
 177 /*
 178  * java.lang.Throwable
 179  */
 180 JNIEXPORT void JNICALL
 181 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
 182 
 183 /*
 184  * java.lang.StackTraceElement
 185  */
 186 JNIEXPORT void JNICALL
 187 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
 188 
 189 JNIEXPORT void JNICALL
 190 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
 191 
 192 /*
 193  * java.lang.StackWalker
 194  */
 195 enum {
 196   JVM_STACKWALK_FILL_CLASS_REFS_ONLY       = 0x2,
 197   JVM_STACKWALK_GET_CALLER_CLASS           = 0x04,
 198   JVM_STACKWALK_SHOW_HIDDEN_FRAMES         = 0x20,
 199   JVM_STACKWALK_FILL_LIVE_STACK_FRAMES     = 0x100
 200 };
 201 
 202 JNIEXPORT jobject JNICALL
 203 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
 204                   jint skip_frames, jint frame_count, jint start_index,
 205                   jobjectArray frames);
 206 
 207 JNIEXPORT jint JNICALL
 208 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
 209                   jint frame_count, jint start_index,
 210                   jobjectArray frames);
 211 
 212 /*
 213  * java.lang.Thread
 214  */
 215 JNIEXPORT void JNICALL
 216 JVM_StartThread(JNIEnv *env, jobject thread);
 217 
 218 JNIEXPORT void JNICALL
 219 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
 220 
 221 JNIEXPORT jboolean JNICALL
 222 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
 223 
 224 JNIEXPORT void JNICALL
 225 JVM_SuspendThread(JNIEnv *env, jobject thread);
 226 
 227 JNIEXPORT void JNICALL
 228 JVM_ResumeThread(JNIEnv *env, jobject thread);
 229 
 230 JNIEXPORT void JNICALL
 231 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
 232 
 233 JNIEXPORT void JNICALL
 234 JVM_Yield(JNIEnv *env, jclass threadClass);
 235 
 236 JNIEXPORT void JNICALL
 237 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
 238 
 239 JNIEXPORT jobject JNICALL
 240 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
 241 
 242 JNIEXPORT jint JNICALL
 243 JVM_CountStackFrames(JNIEnv *env, jobject thread);
 244 
 245 JNIEXPORT void JNICALL
 246 JVM_Interrupt(JNIEnv *env, jobject thread);
 247 
 248 JNIEXPORT jboolean JNICALL
 249 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
 250 
 251 JNIEXPORT jboolean JNICALL
 252 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
 253 
 254 JNIEXPORT void JNICALL
 255 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
 256 
 257 JNIEXPORT jobjectArray JNICALL
 258 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
 259 
 260 JNIEXPORT void JNICALL
 261 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
 262 
 263 /* getStackTrace() and getAllStackTraces() method */
 264 JNIEXPORT jobjectArray JNICALL
 265 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
 266 
 267 /*
 268  * java.lang.SecurityManager
 269  */
 270 JNIEXPORT jobjectArray JNICALL
 271 JVM_GetClassContext(JNIEnv *env);
 272 
 273 /*
 274  * java.lang.Package
 275  */
 276 JNIEXPORT jstring JNICALL
 277 JVM_GetSystemPackage(JNIEnv *env, jstring name);
 278 
 279 JNIEXPORT jobjectArray JNICALL
 280 JVM_GetSystemPackages(JNIEnv *env);
 281 
 282 /*
 283  * java.lang.ref.Reference
 284  */
 285 JNIEXPORT jobject JNICALL
 286 JVM_GetAndClearReferencePendingList(JNIEnv *env);
 287 
 288 JNIEXPORT jboolean JNICALL
 289 JVM_HasReferencePendingList(JNIEnv *env);
 290 
 291 JNIEXPORT void JNICALL
 292 JVM_WaitForReferencePendingList(JNIEnv *env);
 293 
 294 /*
 295  * java.io.ObjectInputStream
 296  */
 297 JNIEXPORT jobject JNICALL
 298 JVM_LatestUserDefinedLoader(JNIEnv *env);
 299 
 300 /*
 301  * java.lang.reflect.Array
 302  */
 303 JNIEXPORT jint JNICALL
 304 JVM_GetArrayLength(JNIEnv *env, jobject arr);
 305 
 306 JNIEXPORT jobject JNICALL
 307 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
 308 
 309 JNIEXPORT jvalue JNICALL
 310 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
 311 
 312 JNIEXPORT void JNICALL
 313 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
 314 
 315 JNIEXPORT void JNICALL
 316 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
 317                              unsigned char vCode);
 318 
 319 JNIEXPORT jobject JNICALL
 320 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
 321 
 322 JNIEXPORT jobject JNICALL
 323 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
 324 
 325 
 326 /*
 327  * Returns the immediate caller class of the native method invoking
 328  * JVM_GetCallerClass.  The Method.invoke and other frames due to
 329  * reflection machinery are skipped.
 330  *
 331  * The caller is expected to be marked with
 332  * jdk.internal.reflect.CallerSensitive. The JVM will throw an
 333  * error if it is not marked properly.
 334  */
 335 JNIEXPORT jclass JNICALL
 336 JVM_GetCallerClass(JNIEnv *env);
 337 
 338 
 339 /*
 340  * Find primitive classes
 341  * utf: class name
 342  */
 343 JNIEXPORT jclass JNICALL
 344 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
 345 
 346 
 347 /*
 348  * Find a class from a boot class loader. Returns NULL if class not found.
 349  */
 350 JNIEXPORT jclass JNICALL
 351 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
 352 
 353 /*
 354  * Find a class from a given class loader.  Throws ClassNotFoundException.
 355  *  name:   name of class
 356  *  init:   whether initialization is done
 357  *  loader: class loader to look up the class. This may not be the same as the caller's
 358  *          class loader.
 359  *  caller: initiating class. The initiating class may be null when a security
 360  *          manager is not installed.
 361  */
 362 JNIEXPORT jclass JNICALL
 363 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
 364                         jobject loader, jclass caller);
 365 
 366 /*
 367  * Find a class from a given class.
 368  */
 369 JNIEXPORT jclass JNICALL
 370 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
 371                              jclass from);
 372 
 373 /* Find a loaded class cached by the VM */
 374 JNIEXPORT jclass JNICALL
 375 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
 376 
 377 /* Define a class */
 378 JNIEXPORT jclass JNICALL
 379 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
 380                 jsize len, jobject pd);
 381 
 382 /* Define a class with a source (added in JDK1.5) */
 383 JNIEXPORT jclass JNICALL
 384 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
 385                           const jbyte *buf, jsize len, jobject pd,
 386                           const char *source);
 387 
 388 /*
 389  * Module support funcions
 390  */
 391 
 392 /*
 393  * Define a module with the specified packages and bind the module to the
 394  * given class loader.
 395  *  module:       module to define
 396  *  is_open:      specifies if module is open (currently ignored)
 397  *  version:      the module version
 398  *  location:     the module location
 399  *  packages:     list of packages in the module
 400  *  num_packages: number of packages in the module
 401  */
 402 JNIEXPORT void JNICALL
 403 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
 404                  jstring location, const char* const* packages, jsize num_packages);
 405 
 406 /*
 407  * Set the boot loader's unnamed module.
 408  *  module: boot loader's unnamed module
 409  */
 410 JNIEXPORT void JNICALL
 411 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
 412 
 413 /*
 414  * Do a qualified export of a package.
 415  *  from_module: module containing the package to export
 416  *  package:     name of the package to export
 417  *  to_module:   module to export the package to
 418  */
 419 JNIEXPORT void JNICALL
 420 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
 421 
 422 /*
 423  * Do an export of a package to all unnamed modules.
 424  *  from_module: module containing the package to export
 425  *  package:     name of the package to export to all unnamed modules
 426  */
 427 JNIEXPORT void JNICALL
 428 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
 429 
 430 /*
 431  * Do an unqualified export of a package.
 432  *  from_module: module containing the package to export
 433  *  package:     name of the package to export
 434  */
 435 JNIEXPORT void JNICALL
 436 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
 437 
 438 /*
 439  * Add a module to the list of modules that a given module can read.
 440  *  from_module:   module requesting read access
 441  *  source_module: module that from_module wants to read
 442  */
 443 JNIEXPORT void JNICALL
 444 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
 445 
 446 /*
 447  * Reflection support functions
 448  */
 449 
 450 JNIEXPORT jstring JNICALL
 451 JVM_GetClassName(JNIEnv *env, jclass cls);
 452 
 453 JNIEXPORT jobjectArray JNICALL
 454 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
 455 
 456 JNIEXPORT jboolean JNICALL
 457 JVM_IsInterface(JNIEnv *env, jclass cls);
 458 
 459 JNIEXPORT jobjectArray JNICALL
 460 JVM_GetClassSigners(JNIEnv *env, jclass cls);
 461 
 462 JNIEXPORT void JNICALL
 463 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
 464 
 465 JNIEXPORT jobject JNICALL
 466 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
 467 
 468 JNIEXPORT jboolean JNICALL
 469 JVM_IsArrayClass(JNIEnv *env, jclass cls);
 470 
 471 JNIEXPORT jboolean JNICALL
 472 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
 473 
 474 JNIEXPORT jint JNICALL
 475 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
 476 
 477 JNIEXPORT jobjectArray JNICALL
 478 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
 479 
 480 JNIEXPORT jclass JNICALL
 481 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
 482 
 483 JNIEXPORT jstring JNICALL
 484 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
 485 
 486 /* Generics support (JDK 1.5) */
 487 JNIEXPORT jstring JNICALL
 488 JVM_GetClassSignature(JNIEnv *env, jclass cls);
 489 
 490 /* Annotations support (JDK 1.5) */
 491 JNIEXPORT jbyteArray JNICALL
 492 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
 493 
 494 /* Type use annotations support (JDK 1.8) */
 495 
 496 JNIEXPORT jbyteArray JNICALL
 497 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
 498 
 499 JNIEXPORT jbyteArray JNICALL
 500 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
 501 
 502 JNIEXPORT jbyteArray JNICALL
 503 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
 504 
 505 /*
 506  * New (JDK 1.4) reflection implementation
 507  */
 508 
 509 JNIEXPORT jobjectArray JNICALL
 510 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 511 
 512 JNIEXPORT jobjectArray JNICALL
 513 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 514 
 515 JNIEXPORT jobjectArray JNICALL
 516 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 517 
 518 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
 519    This returns the access flags for the class as specified in the
 520    class file rather than searching the InnerClasses attribute (if
 521    present) to find the source-level access flags. Only the values of
 522    the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
 523    valid. */
 524 JNIEXPORT jint JNICALL
 525 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
 526 
 527 /* Nestmates - since JDK 11 */
 528 
 529 JNIEXPORT jboolean JNICALL
 530 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
 531 
 532 JNIEXPORT jclass JNICALL
 533 JVM_GetNestHost(JNIEnv *env, jclass current);
 534 
 535 JNIEXPORT jobjectArray JNICALL
 536 JVM_GetNestMembers(JNIEnv *env, jclass current);
 537 
 538 /* The following two reflection routines are still needed due to startup time issues */
 539 /*
 540  * java.lang.reflect.Method
 541  */
 542 JNIEXPORT jobject JNICALL
 543 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
 544 
 545 /*
 546  * java.lang.reflect.Constructor
 547  */
 548 JNIEXPORT jobject JNICALL
 549 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
 550 
 551 /*
 552  * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
 553  */
 554 
 555 JNIEXPORT jobject JNICALL
 556 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
 557 
 558 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
 559 (JNIEnv *env, jobject unused, jobject jcpool);
 560 
 561 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
 562 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 563 
 564 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
 565 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 566 
 567 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
 568 (JNIEnv *env, jobject obj, jobject unused, jint index);
 569 
 570 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
 571 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 572 
 573 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
 574 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 575 
 576 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
 577 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 578 
 579 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
 580 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 581 
 582 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
 583 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 584 
 585 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
 586 (JNIEnv *env, jobject obj, jobject unused, jint index);
 587 
 588 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
 589 (JNIEnv *env, jobject obj, jobject unused, jint index);
 590 
 591 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
 592 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 593 
 594 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
 595 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 596 
 597 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
 598 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 599 
 600 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
 601 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 602 
 603 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
 604 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 605 
 606 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
 607 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 608 
 609 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
 610 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 611 
 612 /*
 613  * Parameter reflection
 614  */
 615 
 616 JNIEXPORT jobjectArray JNICALL
 617 JVM_GetMethodParameters(JNIEnv *env, jobject method);
 618 
 619 /*
 620  * java.security.*
 621  */
 622 
 623 JNIEXPORT jobject JNICALL
 624 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
 625 
 626 JNIEXPORT jobject JNICALL
 627 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
 628 
 629 /*
 630  * Signal support, used to implement the shutdown sequence.  Every VM must
 631  * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
 632  * (^C) and the latter for external termination (kill, system shutdown, etc.).
 633  * Other platform-dependent signal values may also be supported.
 634  */
 635 
 636 JNIEXPORT void * JNICALL
 637 JVM_RegisterSignal(jint sig, void *handler);
 638 
 639 JNIEXPORT jboolean JNICALL
 640 JVM_RaiseSignal(jint sig);
 641 
 642 JNIEXPORT jint JNICALL
 643 JVM_FindSignal(const char *name);
 644 
 645 /*
 646  * Retrieve the assertion directives for the specified class.
 647  */
 648 JNIEXPORT jboolean JNICALL
 649 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
 650 
 651 /*
 652  * Retrieve the assertion directives from the VM.
 653  */
 654 JNIEXPORT jobject JNICALL
 655 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
 656 
 657 /*
 658  * java.util.concurrent.atomic.AtomicLong
 659  */
 660 JNIEXPORT jboolean JNICALL
 661 JVM_SupportsCX8(void);
 662 
 663 /*
 664  * com.sun.dtrace.jsdt support
 665  */
 666 
 667 #define JVM_TRACING_DTRACE_VERSION 1
 668 
 669 /*
 670  * Structure to pass one probe description to JVM
 671  */
 672 typedef struct {
 673     jmethodID method;
 674     jstring   function;
 675     jstring   name;
 676     void*            reserved[4];     // for future use
 677 } JVM_DTraceProbe;
 678 
 679 /**
 680  * Encapsulates the stability ratings for a DTrace provider field
 681  */
 682 typedef struct {
 683     jint nameStability;
 684     jint dataStability;
 685     jint dependencyClass;
 686 } JVM_DTraceInterfaceAttributes;
 687 
 688 /*
 689  * Structure to pass one provider description to JVM
 690  */
 691 typedef struct {
 692     jstring                       name;
 693     JVM_DTraceProbe*              probes;
 694     jint                          probe_count;
 695     JVM_DTraceInterfaceAttributes providerAttributes;
 696     JVM_DTraceInterfaceAttributes moduleAttributes;
 697     JVM_DTraceInterfaceAttributes functionAttributes;
 698     JVM_DTraceInterfaceAttributes nameAttributes;
 699     JVM_DTraceInterfaceAttributes argsAttributes;
 700     void*                         reserved[4]; // for future use
 701 } JVM_DTraceProvider;
 702 
 703 /*
 704  * Get the version number the JVM was built with
 705  */
 706 JNIEXPORT jint JNICALL
 707 JVM_DTraceGetVersion(JNIEnv* env);
 708 
 709 /*
 710  * Register new probe with given signature, return global handle
 711  *
 712  * The version passed in is the version that the library code was
 713  * built with.
 714  */
 715 JNIEXPORT jlong JNICALL
 716 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
 717   jint providers_count, JVM_DTraceProvider* providers);
 718 
 719 /*
 720  * Check JSDT probe
 721  */
 722 JNIEXPORT jboolean JNICALL
 723 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
 724 
 725 /*
 726  * Destroy custom DOF
 727  */
 728 JNIEXPORT void JNICALL
 729 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
 730 
 731 /*
 732  * Check to see if DTrace is supported by OS
 733  */
 734 JNIEXPORT jboolean JNICALL
 735 JVM_DTraceIsSupported(JNIEnv* env);
 736 
 737 /*************************************************************************
 738  PART 2: Support for the Verifier and Class File Format Checker
 739  ************************************************************************/
 740 /*
 741  * Return the class name in UTF format. The result is valid
 742  * until JVM_ReleaseUTf is called.
 743  *
 744  * The caller must treat the string as a constant and not modify it
 745  * in any way.
 746  */
 747 JNIEXPORT const char * JNICALL
 748 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
 749 
 750 /*
 751  * Returns the constant pool types in the buffer provided by "types."
 752  */
 753 JNIEXPORT void JNICALL
 754 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
 755 
 756 /*
 757  * Returns the number of Constant Pool entries.
 758  */
 759 JNIEXPORT jint JNICALL
 760 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
 761 
 762 /*
 763  * Returns the number of *declared* fields or methods.
 764  */
 765 JNIEXPORT jint JNICALL
 766 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
 767 
 768 JNIEXPORT jint JNICALL
 769 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
 770 
 771 /*
 772  * Returns the CP indexes of exceptions raised by a given method.
 773  * Places the result in the given buffer.
 774  *
 775  * The method is identified by method_index.
 776  */
 777 JNIEXPORT void JNICALL
 778 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
 779                                 unsigned short *exceptions);
 780 /*
 781  * Returns the number of exceptions raised by a given method.
 782  * The method is identified by method_index.
 783  */
 784 JNIEXPORT jint JNICALL
 785 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
 786 
 787 /*
 788  * Returns the byte code sequence of 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_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
 795                         unsigned char *code);
 796 
 797 /*
 798  * Returns the length of the byte code sequence of a given method.
 799  * The method is identified by method_index.
 800  */
 801 JNIEXPORT jint JNICALL
 802 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
 803 
 804 /*
 805  * A structure used to a capture exception table entry in a Java method.
 806  */
 807 typedef struct {
 808     jint start_pc;
 809     jint end_pc;
 810     jint handler_pc;
 811     jint catchType;
 812 } JVM_ExceptionTableEntryType;
 813 
 814 /*
 815  * Returns the exception table entry at entry_index of a given method.
 816  * Places the result in the given buffer.
 817  *
 818  * The method is identified by method_index.
 819  */
 820 JNIEXPORT void JNICALL
 821 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
 822                                    jint entry_index,
 823                                    JVM_ExceptionTableEntryType *entry);
 824 
 825 /*
 826  * Returns the length of the exception table of a given method.
 827  * The method is identified by method_index.
 828  */
 829 JNIEXPORT jint JNICALL
 830 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
 831 
 832 /*
 833  * Returns the modifiers of a given field.
 834  * The field is identified by field_index.
 835  */
 836 JNIEXPORT jint JNICALL
 837 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
 838 
 839 /*
 840  * Returns the modifiers of a given method.
 841  * The method is identified by method_index.
 842  */
 843 JNIEXPORT jint JNICALL
 844 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
 845 
 846 /*
 847  * Returns the number of local variables of a given method.
 848  * The method is identified by method_index.
 849  */
 850 JNIEXPORT jint JNICALL
 851 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
 852 
 853 /*
 854  * Returns the number of arguments (including this pointer) of a given method.
 855  * The method is identified by method_index.
 856  */
 857 JNIEXPORT jint JNICALL
 858 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
 859 
 860 /*
 861  * Returns the maximum amount of stack (in words) used by a given method.
 862  * The method is identified by method_index.
 863  */
 864 JNIEXPORT jint JNICALL
 865 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
 866 
 867 /*
 868  * Is a given method a constructor.
 869  * The method is identified by method_index.
 870  */
 871 JNIEXPORT jboolean JNICALL
 872 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
 873 
 874 /*
 875  * Is the given method generated by the VM.
 876  * The method is identified by method_index.
 877  */
 878 JNIEXPORT jboolean JNICALL
 879 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
 880 
 881 /*
 882  * Returns the name of a given method in UTF format.
 883  * The result remains valid until JVM_ReleaseUTF is called.
 884  *
 885  * The caller must treat the string as a constant and not modify it
 886  * in any way.
 887  */
 888 JNIEXPORT const char * JNICALL
 889 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
 890 
 891 /*
 892  * Returns the signature of a given method in UTF format.
 893  * The result remains valid until JVM_ReleaseUTF is called.
 894  *
 895  * The caller must treat the string as a constant and not modify it
 896  * in any way.
 897  */
 898 JNIEXPORT const char * JNICALL
 899 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
 900 
 901 /*
 902  * Returns the name of the field referred to at a given constant pool
 903  * index.
 904  *
 905  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 906  * is called.
 907  *
 908  * The caller must treat the string as a constant and not modify it
 909  * in any way.
 910  */
 911 JNIEXPORT const char * JNICALL
 912 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
 913 
 914 /*
 915  * Returns the name of the method referred to at a given constant pool
 916  * index.
 917  *
 918  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 919  * is called.
 920  *
 921  * The caller must treat the string as a constant and not modify it
 922  * in any way.
 923  */
 924 JNIEXPORT const char * JNICALL
 925 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
 926 
 927 /*
 928  * Returns the signature of the method referred to at a given constant pool
 929  * index.
 930  *
 931  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 932  * is called.
 933  *
 934  * The caller must treat the string as a constant and not modify it
 935  * in any way.
 936  */
 937 JNIEXPORT const char * JNICALL
 938 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
 939 
 940 /*
 941  * Returns the signature of the field referred to at a given constant pool
 942  * index.
 943  *
 944  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 945  * is called.
 946  *
 947  * The caller must treat the string as a constant and not modify it
 948  * in any way.
 949  */
 950 JNIEXPORT const char * JNICALL
 951 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
 952 
 953 /*
 954  * Returns the class name referred to at a given constant pool index.
 955  *
 956  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 957  * is called.
 958  *
 959  * The caller must treat the string as a constant and not modify it
 960  * in any way.
 961  */
 962 JNIEXPORT const char * JNICALL
 963 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
 964 
 965 /*
 966  * Returns the class name referred to at a given constant pool index.
 967  *
 968  * The constant pool entry must refer to a CONSTANT_Fieldref.
 969  *
 970  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 971  * is called.
 972  *
 973  * The caller must treat the string as a constant and not modify it
 974  * in any way.
 975  */
 976 JNIEXPORT const char * JNICALL
 977 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
 978 
 979 /*
 980  * Returns the class name referred to at a given constant pool index.
 981  *
 982  * The constant pool entry must refer to CONSTANT_Methodref or
 983  * CONSTANT_InterfaceMethodref.
 984  *
 985  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 986  * is called.
 987  *
 988  * The caller must treat the string as a constant and not modify it
 989  * in any way.
 990  */
 991 JNIEXPORT const char * JNICALL
 992 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
 993 
 994 /*
 995  * Returns the modifiers of a field in calledClass. The field is
 996  * referred to in class cb at constant pool entry index.
 997  *
 998  * The caller must treat the string as a constant and not modify it
 999  * in any way.
1000  *
1001  * Returns -1 if the field does not exist in calledClass.
1002  */
1003 JNIEXPORT jint JNICALL
1004 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1005 
1006 /*
1007  * Returns the modifiers of a method in calledClass. The method is
1008  * referred to in class cb at constant pool entry index.
1009  *
1010  * Returns -1 if the method does not exist in calledClass.
1011  */
1012 JNIEXPORT jint JNICALL
1013 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1014 
1015 /*
1016  * Releases the UTF string obtained from the VM.
1017  */
1018 JNIEXPORT void JNICALL
1019 JVM_ReleaseUTF(const char *utf);
1020 
1021 /*
1022  * Compare if two classes are in the same package.
1023  */
1024 JNIEXPORT jboolean JNICALL
1025 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1026 
1027 /* Get classfile constants */
1028 #include "classfile_constants.h"
1029 
1030 /*
1031  * A function defined by the byte-code verifier and called by the VM.
1032  * This is not a function implemented in the VM.
1033  *
1034  * Returns JNI_FALSE if verification fails. A detailed error message
1035  * will be places in msg_buf, whose length is specified by buf_len.
1036  */
1037 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1038                                   jclass cb,
1039                                   char * msg_buf,
1040                                   jint buf_len);
1041 
1042 
1043 /*
1044  * Support for a VM-independent class format checker.
1045  */
1046 typedef struct {
1047     unsigned long code;    /* byte code */
1048     unsigned long excs;    /* exceptions */
1049     unsigned long etab;    /* catch table */
1050     unsigned long lnum;    /* line number */
1051     unsigned long lvar;    /* local vars */
1052 } method_size_info;
1053 
1054 typedef struct {
1055     unsigned int constants;    /* constant pool */
1056     unsigned int fields;
1057     unsigned int methods;
1058     unsigned int interfaces;
1059     unsigned int fields2;      /* number of static 2-word fields */
1060     unsigned int innerclasses; /* # of records in InnerClasses attr */
1061 
1062     method_size_info clinit;   /* memory used in clinit */
1063     method_size_info main;     /* used everywhere else */
1064 } class_size_info;
1065 
1066 /*
1067  * Functions defined in libjava.so to perform string conversions.
1068  *
1069  */
1070 
1071 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1072 
1073 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1074 
1075 /* This is the function defined in libjava.so that performs class
1076  * format checks. This functions fills in size information about
1077  * the class file and returns:
1078  *
1079  *   0: good
1080  *  -1: out of memory
1081  *  -2: bad format
1082  *  -3: unsupported version
1083  *  -4: bad class name
1084  */
1085 
1086 typedef jint (*check_format_fn_t)(char *class_name,
1087                                   unsigned char *data,
1088                                   unsigned int data_size,
1089                                   class_size_info *class_size,
1090                                   char *message_buffer,
1091                                   jint buffer_length,
1092                                   jboolean measure_only,
1093                                   jboolean check_relaxed);
1094 
1095 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1096                                         JVM_ACC_FINAL | \
1097                                         JVM_ACC_SUPER | \
1098                                         JVM_ACC_INTERFACE | \
1099                                         JVM_ACC_ABSTRACT | \
1100                                         JVM_ACC_ANNOTATION | \
1101                                         JVM_ACC_ENUM | \
1102                                         JVM_ACC_SYNTHETIC)
1103 
1104 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1105                                         JVM_ACC_PRIVATE | \
1106                                         JVM_ACC_PROTECTED | \
1107                                         JVM_ACC_STATIC | \
1108                                         JVM_ACC_FINAL | \
1109                                         JVM_ACC_VOLATILE | \
1110                                         JVM_ACC_TRANSIENT | \
1111                                         JVM_ACC_ENUM | \
1112                                         JVM_ACC_SYNTHETIC)
1113 
1114 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1115                                          JVM_ACC_PRIVATE | \
1116                                          JVM_ACC_PROTECTED | \
1117                                          JVM_ACC_STATIC | \
1118                                          JVM_ACC_FINAL | \
1119                                          JVM_ACC_SYNCHRONIZED | \
1120                                          JVM_ACC_BRIDGE | \
1121                                          JVM_ACC_VARARGS | \
1122                                          JVM_ACC_NATIVE | \
1123                                          JVM_ACC_ABSTRACT | \
1124                                          JVM_ACC_STRICT | \
1125                                          JVM_ACC_SYNTHETIC)
1126 
1127 /*
1128  * This is the function defined in libjava.so to perform path
1129  * canonicalization. VM call this function before opening jar files
1130  * to load system classes.
1131  *
1132  */
1133 
1134 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1135 
1136 /*************************************************************************
1137  PART 3: I/O and Network Support
1138  ************************************************************************/
1139 
1140 /*
1141  * Convert a pathname into native format.  This function does syntactic
1142  * cleanup, such as removing redundant separator characters.  It modifies
1143  * the given pathname string in place.
1144  */
1145 JNIEXPORT char * JNICALL
1146 JVM_NativePath(char *);
1147 
1148 /*
1149  * The standard printing functions supported by the Java VM. (Should they
1150  * be renamed to JVM_* in the future?
1151  */
1152 
1153 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1154  *  respectively, with the following differences:
1155  * - The string written to str is always zero-terminated, also in case of
1156  *   truncation (count is too small to hold the result string), unless count
1157  *   is 0. In case of truncation count-1 characters are written and '\0'
1158  *   appendend.
1159  * - If count is too small to hold the whole string, -1 is returned across
1160  *   all platforms. */
1161 
1162 JNIEXPORT int
1163 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1164 
1165 JNIEXPORT int
1166 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1167 
1168 JNIEXPORT int
1169 jio_fprintf(FILE *, const char *fmt, ...);
1170 
1171 JNIEXPORT int
1172 jio_vfprintf(FILE *, const char *fmt, va_list args);
1173 
1174 
1175 JNIEXPORT void * JNICALL
1176 JVM_RawMonitorCreate(void);
1177 
1178 JNIEXPORT void JNICALL
1179 JVM_RawMonitorDestroy(void *mon);
1180 
1181 JNIEXPORT jint JNICALL
1182 JVM_RawMonitorEnter(void *mon);
1183 
1184 JNIEXPORT void JNICALL
1185 JVM_RawMonitorExit(void *mon);
1186 
1187 /*
1188  * java.lang.management support
1189  */
1190 JNIEXPORT void* JNICALL
1191 JVM_GetManagement(jint version);
1192 
1193 /*
1194  * com.sun.tools.attach.VirtualMachine support
1195  *
1196  * Initialize the agent properties with the properties maintained in the VM.
1197  */
1198 JNIEXPORT jobject JNICALL
1199 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1200 
1201 JNIEXPORT jstring JNICALL
1202 JVM_GetTemporaryDirectory(JNIEnv *env);
1203 
1204 /* Generics reflection support.
1205  *
1206  * Returns information about the given class's EnclosingMethod
1207  * attribute, if present, or null if the class had no enclosing
1208  * method.
1209  *
1210  * If non-null, the returned array contains three elements. Element 0
1211  * is the java.lang.Class of which the enclosing method is a member,
1212  * and elements 1 and 2 are the java.lang.Strings for the enclosing
1213  * method's name and descriptor, respectively.
1214  */
1215 JNIEXPORT jobjectArray JNICALL
1216 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1217 
1218 /* =========================================================================
1219  * The following defines a private JVM interface that the JDK can query
1220  * for the JVM version and capabilities.  sun.misc.Version defines
1221  * the methods for getting the VM version and its capabilities.
1222  *
1223  * When a new bit is added, the following should be updated to provide
1224  * access to the new capability:
1225  *    HS:   JVM_GetVersionInfo and Abstract_VM_Version class
1226  *    SDK:  Version class
1227  *
1228  * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1229  * JVM to query for the JDK version and capabilities.
1230  *
1231  * When a new bit is added, the following should be updated to provide
1232  * access to the new capability:
1233  *    HS:   JDK_Version class
1234  *    SDK:  JDK_GetVersionInfo0
1235  *
1236  * ==========================================================================
1237  */
1238 typedef struct {
1239     unsigned int jvm_version;  /* Encoded $VNUM as specified by JEP-223 */
1240     unsigned int patch_version : 8; /* JEP-223 patch version */
1241     unsigned int reserved3 : 8;
1242     unsigned int reserved1 : 16;
1243     unsigned int reserved2;
1244 
1245     /* The following bits represents JVM supports that JDK has dependency on.
1246      * JDK can use these bits to determine which JVM version
1247      * and support it has to maintain runtime compatibility.
1248      *
1249      * When a new bit is added in a minor or update release, make sure
1250      * the new bit is also added in the main/baseline.
1251      */
1252     unsigned int is_attach_supported : 1;
1253     unsigned int : 31;
1254     unsigned int : 32;
1255     unsigned int : 32;
1256 } jvm_version_info;
1257 
1258 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1259 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1260 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1261 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1262 
1263 JNIEXPORT void JNICALL
1264 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1265 
1266 typedef struct {
1267     unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1268     unsigned int patch_version : 8; /* JEP-223 patch version */
1269     unsigned int reserved3 : 8;
1270     unsigned int reserved1 : 16;
1271     unsigned int reserved2;
1272 
1273     /* The following bits represents new JDK supports that VM has dependency on.
1274      * VM implementation can use these bits to determine which JDK version
1275      * and support it has to maintain runtime compatibility.
1276      *
1277      * When a new bit is added in a minor or update release, make sure
1278      * the new bit is also added in the main/baseline.
1279      */
1280     unsigned int thread_park_blocker : 1;
1281     unsigned int post_vm_init_hook_enabled : 1;
1282     unsigned int pending_list_uses_discovered_field : 1;
1283     unsigned int : 29;
1284     unsigned int : 32;
1285     unsigned int : 32;
1286 } jdk_version_info;
1287 
1288 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1289 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1290 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1291 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1292 
1293 /*
1294  * This is the function JDK_GetVersionInfo0 defined in libjava.so
1295  * that is dynamically looked up by JVM.
1296  */
1297 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1298 
1299 /*
1300  * This structure is used by the launcher to get the default thread
1301  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1302  * version of 1.1.  As it is not supported otherwise, it has been removed
1303  * from jni.h
1304  */
1305 typedef struct JDK1_1InitArgs {
1306     jint version;
1307 
1308     char **properties;
1309     jint checkSource;
1310     jint nativeStackSize;
1311     jint javaStackSize;
1312     jint minHeapSize;
1313     jint maxHeapSize;
1314     jint verifyMode;
1315     char *classpath;
1316 
1317     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1318     void (JNICALL *exit)(jint code);
1319     void (JNICALL *abort)(void);
1320 
1321     jint enableClassGC;
1322     jint enableVerboseGC;
1323     jint disableAsyncGC;
1324     jint verbose;
1325     jboolean debugging;
1326     jint debugPort;
1327 } JDK1_1InitArgs;
1328 
1329 
1330 #ifdef __cplusplus
1331 } /* extern "C" */
1332 
1333 #endif /* __cplusplus */
1334 
1335 #endif /* !_JAVASOFT_JVM_H_ */