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 
 175 /*
 176  * java.lang.Throwable
 177  */
 178 JNIEXPORT void JNICALL
 179 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
 180 
 181 /*
 182  * java.lang.StackTraceElement
 183  */
 184 JNIEXPORT void JNICALL
 185 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
 186 
 187 JNIEXPORT void JNICALL
 188 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
 189 
 190 /*
 191  * java.lang.StackWalker
 192  */
 193 enum {
 194   JVM_STACKWALK_FILL_CLASS_REFS_ONLY       = 0x2,
 195   JVM_STACKWALK_GET_CALLER_CLASS           = 0x04,
 196   JVM_STACKWALK_SHOW_HIDDEN_FRAMES         = 0x20,
 197   JVM_STACKWALK_FILL_LIVE_STACK_FRAMES     = 0x100
 198 };
 199 
 200 JNIEXPORT jobject JNICALL
 201 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
 202                   jint skip_frames, jint frame_count, jint start_index,
 203                   jobjectArray frames);
 204 
 205 JNIEXPORT jint JNICALL
 206 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
 207                   jint frame_count, jint start_index,
 208                   jobjectArray frames);
 209 
 210 /*
 211  * java.lang.Thread
 212  */
 213 JNIEXPORT void JNICALL
 214 JVM_StartThread(JNIEnv *env, jobject thread);
 215 
 216 JNIEXPORT void JNICALL
 217 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
 218 
 219 JNIEXPORT jboolean JNICALL
 220 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
 221 
 222 JNIEXPORT void JNICALL
 223 JVM_SuspendThread(JNIEnv *env, jobject thread);
 224 
 225 JNIEXPORT void JNICALL
 226 JVM_ResumeThread(JNIEnv *env, jobject thread);
 227 
 228 JNIEXPORT void JNICALL
 229 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
 230 
 231 JNIEXPORT void JNICALL
 232 JVM_Yield(JNIEnv *env, jclass threadClass);
 233 
 234 JNIEXPORT void JNICALL
 235 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
 236 
 237 JNIEXPORT jobject JNICALL
 238 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
 239 
 240 JNIEXPORT jint JNICALL
 241 JVM_CountStackFrames(JNIEnv *env, jobject thread);
 242 
 243 JNIEXPORT void JNICALL
 244 JVM_Interrupt(JNIEnv *env, jobject thread);
 245 
 246 JNIEXPORT jboolean JNICALL
 247 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
 248 
 249 JNIEXPORT jboolean JNICALL
 250 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
 251 
 252 JNIEXPORT void JNICALL
 253 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
 254 
 255 JNIEXPORT jobjectArray JNICALL
 256 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
 257 
 258 JNIEXPORT void JNICALL
 259 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
 260 
 261 /* getStackTrace() and getAllStackTraces() method */
 262 JNIEXPORT jobjectArray JNICALL
 263 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
 264 
 265 /*
 266  * java.lang.SecurityManager
 267  */
 268 JNIEXPORT jobjectArray JNICALL
 269 JVM_GetClassContext(JNIEnv *env);
 270 
 271 /*
 272  * java.lang.Package
 273  */
 274 JNIEXPORT jstring JNICALL
 275 JVM_GetSystemPackage(JNIEnv *env, jstring name);
 276 
 277 JNIEXPORT jobjectArray JNICALL
 278 JVM_GetSystemPackages(JNIEnv *env);
 279 
 280 /*
 281  * java.lang.ref.Reference
 282  */
 283 JNIEXPORT jobject JNICALL
 284 JVM_GetAndClearReferencePendingList(JNIEnv *env);
 285 
 286 JNIEXPORT jboolean JNICALL
 287 JVM_HasReferencePendingList(JNIEnv *env);
 288 
 289 JNIEXPORT void JNICALL
 290 JVM_WaitForReferencePendingList(JNIEnv *env);
 291 
 292 /*
 293  * java.io.ObjectInputStream
 294  */
 295 JNIEXPORT jobject JNICALL
 296 JVM_LatestUserDefinedLoader(JNIEnv *env);
 297 
 298 /*
 299  * java.lang.reflect.Array
 300  */
 301 JNIEXPORT jint JNICALL
 302 JVM_GetArrayLength(JNIEnv *env, jobject arr);
 303 
 304 JNIEXPORT jobject JNICALL
 305 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
 306 
 307 JNIEXPORT jvalue JNICALL
 308 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
 309 
 310 JNIEXPORT void JNICALL
 311 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
 312 
 313 JNIEXPORT void JNICALL
 314 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
 315                              unsigned char vCode);
 316 
 317 JNIEXPORT jobject JNICALL
 318 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
 319 
 320 JNIEXPORT jobject JNICALL
 321 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
 322 
 323 
 324 /*
 325  * Returns the immediate caller class of the native method invoking
 326  * JVM_GetCallerClass.  The Method.invoke and other frames due to
 327  * reflection machinery are skipped.
 328  *
 329  * The caller is expected to be marked with
 330  * jdk.internal.reflect.CallerSensitive. The JVM will throw an
 331  * error if it is not marked properly.
 332  */
 333 JNIEXPORT jclass JNICALL
 334 JVM_GetCallerClass(JNIEnv *env);
 335 
 336 
 337 /*
 338  * Find primitive classes
 339  * utf: class name
 340  */
 341 JNIEXPORT jclass JNICALL
 342 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
 343 
 344 
 345 /*
 346  * Find a class from a boot class loader. Returns NULL if class not found.
 347  */
 348 JNIEXPORT jclass JNICALL
 349 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
 350 
 351 /*
 352  * Find a class from a given class loader.  Throws ClassNotFoundException.
 353  *  name:   name of class
 354  *  init:   whether initialization is done
 355  *  loader: class loader to look up the class. This may not be the same as the caller's
 356  *          class loader.
 357  *  caller: initiating class. The initiating class may be null when a security
 358  *          manager is not installed.
 359  */
 360 JNIEXPORT jclass JNICALL
 361 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
 362                         jobject loader, jclass caller);
 363 
 364 /*
 365  * Find a class from a given class.
 366  */
 367 JNIEXPORT jclass JNICALL
 368 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
 369                              jclass from);
 370 
 371 /* Find a loaded class cached by the VM */
 372 JNIEXPORT jclass JNICALL
 373 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
 374 
 375 /* Define a class */
 376 JNIEXPORT jclass JNICALL
 377 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
 378                 jsize len, jobject pd);
 379 
 380 /* Define a class with a source (added in JDK1.5) */
 381 JNIEXPORT jclass JNICALL
 382 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
 383                           const jbyte *buf, jsize len, jobject pd,
 384                           const char *source);
 385 
 386 /*
 387  * Module support funcions
 388  */
 389 
 390 /*
 391  * Define a module with the specified packages and bind the module to the
 392  * given class loader.
 393  *  module:       module to define
 394  *  is_open:      specifies if module is open (currently ignored)
 395  *  version:      the module version
 396  *  location:     the module location
 397  *  packages:     list of packages in the module
 398  *  num_packages: number of packages in the module
 399  */
 400 JNIEXPORT void JNICALL
 401 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
 402                  jstring location, const char* const* packages, jsize num_packages);
 403 
 404 /*
 405  * Set the boot loader's unnamed module.
 406  *  module: boot loader's unnamed module
 407  */
 408 JNIEXPORT void JNICALL
 409 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
 410 
 411 /*
 412  * Do a qualified export of a package.
 413  *  from_module: module containing the package to export
 414  *  package:     name of the package to export
 415  *  to_module:   module to export the package to
 416  */
 417 JNIEXPORT void JNICALL
 418 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
 419 
 420 /*
 421  * Do an export of a package to all unnamed modules.
 422  *  from_module: module containing the package to export
 423  *  package:     name of the package to export to all unnamed modules
 424  */
 425 JNIEXPORT void JNICALL
 426 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
 427 
 428 /*
 429  * Do an unqualified export of a package.
 430  *  from_module: module containing the package to export
 431  *  package:     name of the package to export
 432  */
 433 JNIEXPORT void JNICALL
 434 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
 435 
 436 /*
 437  * Add a module to the list of modules that a given module can read.
 438  *  from_module:   module requesting read access
 439  *  source_module: module that from_module wants to read
 440  */
 441 JNIEXPORT void JNICALL
 442 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
 443 
 444 /*
 445  * Reflection support functions
 446  */
 447 
 448 JNIEXPORT jstring JNICALL
 449 JVM_GetClassName(JNIEnv *env, jclass cls);
 450 
 451 JNIEXPORT jobjectArray JNICALL
 452 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
 453 
 454 JNIEXPORT jboolean JNICALL
 455 JVM_IsInterface(JNIEnv *env, jclass cls);
 456 
 457 JNIEXPORT jobjectArray JNICALL
 458 JVM_GetClassSigners(JNIEnv *env, jclass cls);
 459 
 460 JNIEXPORT void JNICALL
 461 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
 462 
 463 JNIEXPORT jobject JNICALL
 464 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
 465 
 466 JNIEXPORT jboolean JNICALL
 467 JVM_IsArrayClass(JNIEnv *env, jclass cls);
 468 
 469 JNIEXPORT jboolean JNICALL
 470 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
 471 
 472 JNIEXPORT jint JNICALL
 473 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
 474 
 475 JNIEXPORT jobjectArray JNICALL
 476 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
 477 
 478 JNIEXPORT jclass JNICALL
 479 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
 480 
 481 JNIEXPORT jstring JNICALL
 482 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
 483 
 484 /* Generics support (JDK 1.5) */
 485 JNIEXPORT jstring JNICALL
 486 JVM_GetClassSignature(JNIEnv *env, jclass cls);
 487 
 488 /* Annotations support (JDK 1.5) */
 489 JNIEXPORT jbyteArray JNICALL
 490 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
 491 
 492 /* Type use annotations support (JDK 1.8) */
 493 
 494 JNIEXPORT jbyteArray JNICALL
 495 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
 496 
 497 JNIEXPORT jbyteArray JNICALL
 498 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
 499 
 500 JNIEXPORT jbyteArray JNICALL
 501 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
 502 
 503 /*
 504  * New (JDK 1.4) reflection implementation
 505  */
 506 
 507 JNIEXPORT jobjectArray JNICALL
 508 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 509 
 510 JNIEXPORT jobjectArray JNICALL
 511 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 512 
 513 JNIEXPORT jobjectArray JNICALL
 514 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 515 
 516 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
 517    This returns the access flags for the class as specified in the
 518    class file rather than searching the InnerClasses attribute (if
 519    present) to find the source-level access flags. Only the values of
 520    the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
 521    valid. */
 522 JNIEXPORT jint JNICALL
 523 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
 524 
 525 /* Nestmates - since JDK 11 */
 526 
 527 JNIEXPORT jboolean JNICALL
 528 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
 529 
 530 JNIEXPORT jclass JNICALL
 531 JVM_GetNestHost(JNIEnv *env, jclass current);
 532 
 533 JNIEXPORT jobjectArray JNICALL
 534 JVM_GetNestMembers(JNIEnv *env, jclass current);
 535 
 536 /* The following two reflection routines are still needed due to startup time issues */
 537 /*
 538  * java.lang.reflect.Method
 539  */
 540 JNIEXPORT jobject JNICALL
 541 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
 542 
 543 /*
 544  * java.lang.reflect.Constructor
 545  */
 546 JNIEXPORT jobject JNICALL
 547 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
 548 
 549 /*
 550  * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
 551  */
 552 
 553 JNIEXPORT jobject JNICALL
 554 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
 555 
 556 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
 557 (JNIEnv *env, jobject unused, jobject jcpool);
 558 
 559 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
 560 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 561 
 562 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
 563 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 564 
 565 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
 566 (JNIEnv *env, jobject obj, jobject unused, jint index);
 567 
 568 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
 569 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 570 
 571 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
 572 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 573 
 574 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
 575 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 576 
 577 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
 578 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 579 
 580 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
 581 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 582 
 583 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
 584 (JNIEnv *env, jobject obj, jobject unused, jint index);
 585 
 586 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
 587 (JNIEnv *env, jobject obj, jobject unused, jint index);
 588 
 589 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
 590 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 591 
 592 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
 593 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 594 
 595 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
 596 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 597 
 598 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
 599 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 600 
 601 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
 602 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 603 
 604 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
 605 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 606 
 607 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
 608 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 609 
 610 /*
 611  * Parameter reflection
 612  */
 613 
 614 JNIEXPORT jobjectArray JNICALL
 615 JVM_GetMethodParameters(JNIEnv *env, jobject method);
 616 
 617 /*
 618  * java.security.*
 619  */
 620 
 621 JNIEXPORT jobject JNICALL
 622 JVM_DoPrivileged(JNIEnv *env, jclass cls,
 623                  jobject action, jobject context, jboolean wrapException);
 624 
 625 JNIEXPORT jobject JNICALL
 626 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
 627 
 628 JNIEXPORT jobject JNICALL
 629 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
 630 
 631 /*
 632  * Signal support, used to implement the shutdown sequence.  Every VM must
 633  * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
 634  * (^C) and the latter for external termination (kill, system shutdown, etc.).
 635  * Other platform-dependent signal values may also be supported.
 636  */
 637 
 638 JNIEXPORT void * JNICALL
 639 JVM_RegisterSignal(jint sig, void *handler);
 640 
 641 JNIEXPORT jboolean JNICALL
 642 JVM_RaiseSignal(jint sig);
 643 
 644 JNIEXPORT jint JNICALL
 645 JVM_FindSignal(const char *name);
 646 
 647 /*
 648  * Retrieve the assertion directives for the specified class.
 649  */
 650 JNIEXPORT jboolean JNICALL
 651 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
 652 
 653 /*
 654  * Retrieve the assertion directives from the VM.
 655  */
 656 JNIEXPORT jobject JNICALL
 657 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
 658 
 659 /*
 660  * java.util.concurrent.atomic.AtomicLong
 661  */
 662 JNIEXPORT jboolean JNICALL
 663 JVM_SupportsCX8(void);
 664 
 665 /*
 666  * com.sun.dtrace.jsdt support
 667  */
 668 
 669 #define JVM_TRACING_DTRACE_VERSION 1
 670 
 671 /*
 672  * Structure to pass one probe description to JVM
 673  */
 674 typedef struct {
 675     jmethodID method;
 676     jstring   function;
 677     jstring   name;
 678     void*            reserved[4];     // for future use
 679 } JVM_DTraceProbe;
 680 
 681 /**
 682  * Encapsulates the stability ratings for a DTrace provider field
 683  */
 684 typedef struct {
 685     jint nameStability;
 686     jint dataStability;
 687     jint dependencyClass;
 688 } JVM_DTraceInterfaceAttributes;
 689 
 690 /*
 691  * Structure to pass one provider description to JVM
 692  */
 693 typedef struct {
 694     jstring                       name;
 695     JVM_DTraceProbe*              probes;
 696     jint                          probe_count;
 697     JVM_DTraceInterfaceAttributes providerAttributes;
 698     JVM_DTraceInterfaceAttributes moduleAttributes;
 699     JVM_DTraceInterfaceAttributes functionAttributes;
 700     JVM_DTraceInterfaceAttributes nameAttributes;
 701     JVM_DTraceInterfaceAttributes argsAttributes;
 702     void*                         reserved[4]; // for future use
 703 } JVM_DTraceProvider;
 704 
 705 /*
 706  * Get the version number the JVM was built with
 707  */
 708 JNIEXPORT jint JNICALL
 709 JVM_DTraceGetVersion(JNIEnv* env);
 710 
 711 /*
 712  * Register new probe with given signature, return global handle
 713  *
 714  * The version passed in is the version that the library code was
 715  * built with.
 716  */
 717 JNIEXPORT jlong JNICALL
 718 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
 719   jint providers_count, JVM_DTraceProvider* providers);
 720 
 721 /*
 722  * Check JSDT probe
 723  */
 724 JNIEXPORT jboolean JNICALL
 725 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
 726 
 727 /*
 728  * Destroy custom DOF
 729  */
 730 JNIEXPORT void JNICALL
 731 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
 732 
 733 /*
 734  * Check to see if DTrace is supported by OS
 735  */
 736 JNIEXPORT jboolean JNICALL
 737 JVM_DTraceIsSupported(JNIEnv* env);
 738 
 739 /*************************************************************************
 740  PART 2: Support for the Verifier and Class File Format Checker
 741  ************************************************************************/
 742 /*
 743  * Return the class name in UTF format. The result is valid
 744  * until JVM_ReleaseUTf is called.
 745  *
 746  * The caller must treat the string as a constant and not modify it
 747  * in any way.
 748  */
 749 JNIEXPORT const char * JNICALL
 750 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
 751 
 752 /*
 753  * Returns the constant pool types in the buffer provided by "types."
 754  */
 755 JNIEXPORT void JNICALL
 756 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
 757 
 758 /*
 759  * Returns the number of Constant Pool entries.
 760  */
 761 JNIEXPORT jint JNICALL
 762 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
 763 
 764 /*
 765  * Returns the number of *declared* fields or methods.
 766  */
 767 JNIEXPORT jint JNICALL
 768 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
 769 
 770 JNIEXPORT jint JNICALL
 771 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
 772 
 773 /*
 774  * Returns the CP indexes of exceptions raised by a given method.
 775  * Places the result in the given buffer.
 776  *
 777  * The method is identified by method_index.
 778  */
 779 JNIEXPORT void JNICALL
 780 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
 781                                 unsigned short *exceptions);
 782 /*
 783  * Returns the number of exceptions raised by a given method.
 784  * The method is identified by method_index.
 785  */
 786 JNIEXPORT jint JNICALL
 787 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
 788 
 789 /*
 790  * Returns the byte code sequence of a given method.
 791  * Places the result in the given buffer.
 792  *
 793  * The method is identified by method_index.
 794  */
 795 JNIEXPORT void JNICALL
 796 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
 797                         unsigned char *code);
 798 
 799 /*
 800  * Returns the length of the byte code sequence of a given method.
 801  * The method is identified by method_index.
 802  */
 803 JNIEXPORT jint JNICALL
 804 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
 805 
 806 /*
 807  * A structure used to a capture exception table entry in a Java method.
 808  */
 809 typedef struct {
 810     jint start_pc;
 811     jint end_pc;
 812     jint handler_pc;
 813     jint catchType;
 814 } JVM_ExceptionTableEntryType;
 815 
 816 /*
 817  * Returns the exception table entry at entry_index of a given method.
 818  * Places the result in the given buffer.
 819  *
 820  * The method is identified by method_index.
 821  */
 822 JNIEXPORT void JNICALL
 823 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
 824                                    jint entry_index,
 825                                    JVM_ExceptionTableEntryType *entry);
 826 
 827 /*
 828  * Returns the length of the exception table of a given method.
 829  * The method is identified by method_index.
 830  */
 831 JNIEXPORT jint JNICALL
 832 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
 833 
 834 /*
 835  * Returns the modifiers of a given field.
 836  * The field is identified by field_index.
 837  */
 838 JNIEXPORT jint JNICALL
 839 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
 840 
 841 /*
 842  * Returns the modifiers of a given method.
 843  * The method is identified by method_index.
 844  */
 845 JNIEXPORT jint JNICALL
 846 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
 847 
 848 /*
 849  * Returns the number of local variables of a given method.
 850  * The method is identified by method_index.
 851  */
 852 JNIEXPORT jint JNICALL
 853 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
 854 
 855 /*
 856  * Returns the number of arguments (including this pointer) of a given method.
 857  * The method is identified by method_index.
 858  */
 859 JNIEXPORT jint JNICALL
 860 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
 861 
 862 /*
 863  * Returns the maximum amount of stack (in words) used by a given method.
 864  * The method is identified by method_index.
 865  */
 866 JNIEXPORT jint JNICALL
 867 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
 868 
 869 /*
 870  * Is a given method a constructor.
 871  * The method is identified by method_index.
 872  */
 873 JNIEXPORT jboolean JNICALL
 874 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
 875 
 876 /*
 877  * Is the given method generated by the VM.
 878  * The method is identified by method_index.
 879  */
 880 JNIEXPORT jboolean JNICALL
 881 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
 882 
 883 /*
 884  * Returns the name of a given method in UTF format.
 885  * The result remains valid until JVM_ReleaseUTF is called.
 886  *
 887  * The caller must treat the string as a constant and not modify it
 888  * in any way.
 889  */
 890 JNIEXPORT const char * JNICALL
 891 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
 892 
 893 /*
 894  * Returns the signature of a given method in UTF format.
 895  * The result remains valid until JVM_ReleaseUTF is called.
 896  *
 897  * The caller must treat the string as a constant and not modify it
 898  * in any way.
 899  */
 900 JNIEXPORT const char * JNICALL
 901 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
 902 
 903 /*
 904  * Returns the name of the field referred to at a given constant pool
 905  * index.
 906  *
 907  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 908  * is called.
 909  *
 910  * The caller must treat the string as a constant and not modify it
 911  * in any way.
 912  */
 913 JNIEXPORT const char * JNICALL
 914 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
 915 
 916 /*
 917  * Returns the name of the method referred to at a given constant pool
 918  * index.
 919  *
 920  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 921  * is called.
 922  *
 923  * The caller must treat the string as a constant and not modify it
 924  * in any way.
 925  */
 926 JNIEXPORT const char * JNICALL
 927 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
 928 
 929 /*
 930  * Returns the signature of the method referred to at a given constant pool
 931  * index.
 932  *
 933  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 934  * is called.
 935  *
 936  * The caller must treat the string as a constant and not modify it
 937  * in any way.
 938  */
 939 JNIEXPORT const char * JNICALL
 940 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
 941 
 942 /*
 943  * Returns the signature of the field referred to at a given constant pool
 944  * index.
 945  *
 946  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 947  * is called.
 948  *
 949  * The caller must treat the string as a constant and not modify it
 950  * in any way.
 951  */
 952 JNIEXPORT const char * JNICALL
 953 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
 954 
 955 /*
 956  * Returns the class name referred to at a given constant pool index.
 957  *
 958  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 959  * is called.
 960  *
 961  * The caller must treat the string as a constant and not modify it
 962  * in any way.
 963  */
 964 JNIEXPORT const char * JNICALL
 965 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
 966 
 967 /*
 968  * Returns the class name referred to at a given constant pool index.
 969  *
 970  * The constant pool entry must refer to a CONSTANT_Fieldref.
 971  *
 972  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 973  * is called.
 974  *
 975  * The caller must treat the string as a constant and not modify it
 976  * in any way.
 977  */
 978 JNIEXPORT const char * JNICALL
 979 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
 980 
 981 /*
 982  * Returns the class name referred to at a given constant pool index.
 983  *
 984  * The constant pool entry must refer to CONSTANT_Methodref or
 985  * CONSTANT_InterfaceMethodref.
 986  *
 987  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 988  * is called.
 989  *
 990  * The caller must treat the string as a constant and not modify it
 991  * in any way.
 992  */
 993 JNIEXPORT const char * JNICALL
 994 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
 995 
 996 /*
 997  * Returns the modifiers of a field in calledClass. The field is
 998  * referred to in class cb at constant pool entry index.
 999  *
1000  * The caller must treat the string as a constant and not modify it
1001  * in any way.
1002  *
1003  * Returns -1 if the field does not exist in calledClass.
1004  */
1005 JNIEXPORT jint JNICALL
1006 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1007 
1008 /*
1009  * Returns the modifiers of a method in calledClass. The method is
1010  * referred to in class cb at constant pool entry index.
1011  *
1012  * Returns -1 if the method does not exist in calledClass.
1013  */
1014 JNIEXPORT jint JNICALL
1015 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1016 
1017 /*
1018  * Releases the UTF string obtained from the VM.
1019  */
1020 JNIEXPORT void JNICALL
1021 JVM_ReleaseUTF(const char *utf);
1022 
1023 /*
1024  * Compare if two classes are in the same package.
1025  */
1026 JNIEXPORT jboolean JNICALL
1027 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1028 
1029 /* Get classfile constants */
1030 #include "classfile_constants.h"
1031 
1032 /*
1033  * A function defined by the byte-code verifier and called by the VM.
1034  * This is not a function implemented in the VM.
1035  *
1036  * Returns JNI_FALSE if verification fails. A detailed error message
1037  * will be places in msg_buf, whose length is specified by buf_len.
1038  */
1039 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1040                                   jclass cb,
1041                                   char * msg_buf,
1042                                   jint buf_len);
1043 
1044 
1045 /*
1046  * Support for a VM-independent class format checker.
1047  */
1048 typedef struct {
1049     unsigned long code;    /* byte code */
1050     unsigned long excs;    /* exceptions */
1051     unsigned long etab;    /* catch table */
1052     unsigned long lnum;    /* line number */
1053     unsigned long lvar;    /* local vars */
1054 } method_size_info;
1055 
1056 typedef struct {
1057     unsigned int constants;    /* constant pool */
1058     unsigned int fields;
1059     unsigned int methods;
1060     unsigned int interfaces;
1061     unsigned int fields2;      /* number of static 2-word fields */
1062     unsigned int innerclasses; /* # of records in InnerClasses attr */
1063 
1064     method_size_info clinit;   /* memory used in clinit */
1065     method_size_info main;     /* used everywhere else */
1066 } class_size_info;
1067 
1068 /*
1069  * Functions defined in libjava.so to perform string conversions.
1070  *
1071  */
1072 
1073 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1074 
1075 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1076 
1077 /* This is the function defined in libjava.so that performs class
1078  * format checks. This functions fills in size information about
1079  * the class file and returns:
1080  *
1081  *   0: good
1082  *  -1: out of memory
1083  *  -2: bad format
1084  *  -3: unsupported version
1085  *  -4: bad class name
1086  */
1087 
1088 typedef jint (*check_format_fn_t)(char *class_name,
1089                                   unsigned char *data,
1090                                   unsigned int data_size,
1091                                   class_size_info *class_size,
1092                                   char *message_buffer,
1093                                   jint buffer_length,
1094                                   jboolean measure_only,
1095                                   jboolean check_relaxed);
1096 
1097 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1098                                         JVM_ACC_FINAL | \
1099                                         JVM_ACC_SUPER | \
1100                                         JVM_ACC_INTERFACE | \
1101                                         JVM_ACC_ABSTRACT | \
1102                                         JVM_ACC_ANNOTATION | \
1103                                         JVM_ACC_ENUM | \
1104                                         JVM_ACC_SYNTHETIC)
1105 
1106 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1107                                         JVM_ACC_PRIVATE | \
1108                                         JVM_ACC_PROTECTED | \
1109                                         JVM_ACC_STATIC | \
1110                                         JVM_ACC_FINAL | \
1111                                         JVM_ACC_VOLATILE | \
1112                                         JVM_ACC_TRANSIENT | \
1113                                         JVM_ACC_ENUM | \
1114                                         JVM_ACC_SYNTHETIC)
1115 
1116 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1117                                          JVM_ACC_PRIVATE | \
1118                                          JVM_ACC_PROTECTED | \
1119                                          JVM_ACC_STATIC | \
1120                                          JVM_ACC_FINAL | \
1121                                          JVM_ACC_SYNCHRONIZED | \
1122                                          JVM_ACC_BRIDGE | \
1123                                          JVM_ACC_VARARGS | \
1124                                          JVM_ACC_NATIVE | \
1125                                          JVM_ACC_ABSTRACT | \
1126                                          JVM_ACC_STRICT | \
1127                                          JVM_ACC_SYNTHETIC)
1128 
1129 /*
1130  * This is the function defined in libjava.so to perform path
1131  * canonicalization. VM call this function before opening jar files
1132  * to load system classes.
1133  *
1134  */
1135 
1136 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1137 
1138 /*************************************************************************
1139  PART 3: I/O and Network Support
1140  ************************************************************************/
1141 
1142 /*
1143  * Convert a pathname into native format.  This function does syntactic
1144  * cleanup, such as removing redundant separator characters.  It modifies
1145  * the given pathname string in place.
1146  */
1147 JNIEXPORT char * JNICALL
1148 JVM_NativePath(char *);
1149 
1150 /*
1151  * The standard printing functions supported by the Java VM. (Should they
1152  * be renamed to JVM_* in the future?
1153  */
1154 
1155 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1156  *  respectively, with the following differences:
1157  * - The string written to str is always zero-terminated, also in case of
1158  *   truncation (count is too small to hold the result string), unless count
1159  *   is 0. In case of truncation count-1 characters are written and '\0'
1160  *   appendend.
1161  * - If count is too small to hold the whole string, -1 is returned across
1162  *   all platforms. */
1163 
1164 JNIEXPORT int
1165 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1166 
1167 JNIEXPORT int
1168 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1169 
1170 JNIEXPORT int
1171 jio_fprintf(FILE *, const char *fmt, ...);
1172 
1173 JNIEXPORT int
1174 jio_vfprintf(FILE *, const char *fmt, va_list args);
1175 
1176 
1177 JNIEXPORT void * JNICALL
1178 JVM_RawMonitorCreate(void);
1179 
1180 JNIEXPORT void JNICALL
1181 JVM_RawMonitorDestroy(void *mon);
1182 
1183 JNIEXPORT jint JNICALL
1184 JVM_RawMonitorEnter(void *mon);
1185 
1186 JNIEXPORT void JNICALL
1187 JVM_RawMonitorExit(void *mon);
1188 
1189 /*
1190  * java.lang.management support
1191  */
1192 JNIEXPORT void* JNICALL
1193 JVM_GetManagement(jint version);
1194 
1195 /*
1196  * com.sun.tools.attach.VirtualMachine support
1197  *
1198  * Initialize the agent properties with the properties maintained in the VM.
1199  */
1200 JNIEXPORT jobject JNICALL
1201 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1202 
1203 JNIEXPORT jstring JNICALL
1204 JVM_GetTemporaryDirectory(JNIEnv *env);
1205 
1206 /* Generics reflection support.
1207  *
1208  * Returns information about the given class's EnclosingMethod
1209  * attribute, if present, or null if the class had no enclosing
1210  * method.
1211  *
1212  * If non-null, the returned array contains three elements. Element 0
1213  * is the java.lang.Class of which the enclosing method is a member,
1214  * and elements 1 and 2 are the java.lang.Strings for the enclosing
1215  * method's name and descriptor, respectively.
1216  */
1217 JNIEXPORT jobjectArray JNICALL
1218 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1219 
1220 /* =========================================================================
1221  * The following defines a private JVM interface that the JDK can query
1222  * for the JVM version and capabilities.  sun.misc.Version defines
1223  * the methods for getting the VM version and its capabilities.
1224  *
1225  * When a new bit is added, the following should be updated to provide
1226  * access to the new capability:
1227  *    HS:   JVM_GetVersionInfo and Abstract_VM_Version class
1228  *    SDK:  Version class
1229  *
1230  * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1231  * JVM to query for the JDK version and capabilities.
1232  *
1233  * When a new bit is added, the following should be updated to provide
1234  * access to the new capability:
1235  *    HS:   JDK_Version class
1236  *    SDK:  JDK_GetVersionInfo0
1237  *
1238  * ==========================================================================
1239  */
1240 typedef struct {
1241     unsigned int jvm_version;  /* Encoded $VNUM as specified by JEP-223 */
1242     unsigned int patch_version : 8; /* JEP-223 patch version */
1243     unsigned int reserved3 : 8;
1244     unsigned int reserved1 : 16;
1245     unsigned int reserved2;
1246 
1247     /* The following bits represents JVM supports that JDK has dependency on.
1248      * JDK can use these bits to determine which JVM version
1249      * and support it has to maintain runtime compatibility.
1250      *
1251      * When a new bit is added in a minor or update release, make sure
1252      * the new bit is also added in the main/baseline.
1253      */
1254     unsigned int is_attach_supported : 1;
1255     unsigned int : 31;
1256     unsigned int : 32;
1257     unsigned int : 32;
1258 } jvm_version_info;
1259 
1260 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1261 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1262 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1263 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1264 
1265 JNIEXPORT void JNICALL
1266 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1267 
1268 typedef struct {
1269     unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1270     unsigned int patch_version : 8; /* JEP-223 patch version */
1271     unsigned int reserved3 : 8;
1272     unsigned int reserved1 : 16;
1273     unsigned int reserved2;
1274 
1275     /* The following bits represents new JDK supports that VM has dependency on.
1276      * VM implementation can use these bits to determine which JDK version
1277      * and support it has to maintain runtime compatibility.
1278      *
1279      * When a new bit is added in a minor or update release, make sure
1280      * the new bit is also added in the main/baseline.
1281      */
1282     unsigned int thread_park_blocker : 1;
1283     unsigned int post_vm_init_hook_enabled : 1;
1284     unsigned int pending_list_uses_discovered_field : 1;
1285     unsigned int : 29;
1286     unsigned int : 32;
1287     unsigned int : 32;
1288 } jdk_version_info;
1289 
1290 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1291 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1292 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1293 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1294 
1295 /*
1296  * This is the function JDK_GetVersionInfo0 defined in libjava.so
1297  * that is dynamically looked up by JVM.
1298  */
1299 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1300 
1301 /*
1302  * This structure is used by the launcher to get the default thread
1303  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1304  * version of 1.1.  As it is not supported otherwise, it has been removed
1305  * from jni.h
1306  */
1307 typedef struct JDK1_1InitArgs {
1308     jint version;
1309 
1310     char **properties;
1311     jint checkSource;
1312     jint nativeStackSize;
1313     jint javaStackSize;
1314     jint minHeapSize;
1315     jint maxHeapSize;
1316     jint verifyMode;
1317     char *classpath;
1318 
1319     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1320     void (JNICALL *exit)(jint code);
1321     void (JNICALL *abort)(void);
1322 
1323     jint enableClassGC;
1324     jint enableVerboseGC;
1325     jint disableAsyncGC;
1326     jint verbose;
1327     jboolean debugging;
1328     jint debugPort;
1329 } JDK1_1InitArgs;
1330 
1331 
1332 #ifdef __cplusplus
1333 } /* extern "C" */
1334 
1335 #endif /* __cplusplus */
1336 
1337 #endif /* !_JAVASOFT_JVM_H_ */