1 /*
   2  * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #ifndef _JAVASOFT_JVM_H_
  27 #define _JAVASOFT_JVM_H_
  28 
  29 #include <sys/stat.h>
  30 
  31 #include "jni.h"
  32 #include "jvm_md.h"
  33 
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37 
  38 /*
  39  * This file contains additional functions exported from the VM.
  40  * These functions are complementary to the standard JNI support.
  41  * There are three parts to this file:
  42  *
  43  * First, this file contains the VM-related functions needed by native
  44  * libraries in the standard Java API. For example, the java.lang.Object
  45  * class needs VM-level functions that wait for and notify monitors.
  46  *
  47  * Second, this file contains the functions and constant definitions
  48  * needed by the byte code verifier and class file format checker.
  49  * These functions allow the verifier and format checker to be written
  50  * in a VM-independent way.
  51  *
  52  * Third, this file contains various I/O and network operations needed
  53  * by the standard Java I/O and network APIs.
  54  */
  55 
  56 /*
  57  * Bump the version number when either of the following happens:
  58  *
  59  * 1. There is a change in JVM_* functions.
  60  *
  61  * 2. There is a change in the contract between VM and Java classes.
  62  *    For example, if the VM relies on a new private field in Thread
  63  *    class.
  64  */
  65 
  66 #define JVM_INTERFACE_VERSION 5
  67 
  68 JNIEXPORT jint JNICALL
  69 JVM_GetInterfaceVersion(void);
  70 
  71 /*************************************************************************
  72  PART 1: Functions for Native Libraries
  73  ************************************************************************/
  74 /*
  75  * java.lang.Object
  76  */
  77 JNIEXPORT jint JNICALL
  78 JVM_IHashCode(JNIEnv *env, jobject obj);
  79 
  80 JNIEXPORT void JNICALL
  81 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
  82 
  83 JNIEXPORT void JNICALL
  84 JVM_MonitorNotify(JNIEnv *env, jobject obj);
  85 
  86 JNIEXPORT void JNICALL
  87 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
  88 
  89 JNIEXPORT jobject JNICALL
  90 JVM_Clone(JNIEnv *env, jobject obj);
  91 
  92 /*
  93  * java.lang.String
  94  */
  95 JNIEXPORT jstring JNICALL
  96 JVM_InternString(JNIEnv *env, jstring str);
  97 
  98 /*
  99  * java.lang.System
 100  */
 101 JNIEXPORT jlong JNICALL
 102 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
 103 
 104 JNIEXPORT jlong JNICALL
 105 JVM_NanoTime(JNIEnv *env, jclass ignored);
 106 
 107 JNIEXPORT jlong JNICALL
 108 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
 109 
 110 JNIEXPORT void JNICALL
 111 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
 112               jobject dst, jint dst_pos, jint length);
 113 
 114 JNIEXPORT jobject JNICALL
 115 JVM_InitProperties(JNIEnv *env, jobject p);
 116 
 117 
 118 /*
 119  * java.lang.Runtime
 120  */
 121 JNIEXPORT void JNICALL
 122 JVM_Halt(jint code);
 123 
 124 JNIEXPORT void JNICALL
 125 JVM_GC(void);
 126 
 127 /* Returns the number of real-time milliseconds that have elapsed since the
 128  * least-recently-inspected heap object was last inspected by the garbage
 129  * collector.
 130  *
 131  * For simple stop-the-world collectors this value is just the time
 132  * since the most recent collection.  For generational collectors it is the
 133  * time since the oldest generation was most recently collected.  Other
 134  * collectors are free to return a pessimistic estimate of the elapsed time, or
 135  * simply the time since the last full collection was performed.
 136  *
 137  * Note that in the presence of reference objects, a given object that is no
 138  * longer strongly reachable may have to be inspected multiple times before it
 139  * can be reclaimed.
 140  */
 141 JNIEXPORT jlong JNICALL
 142 JVM_MaxObjectInspectionAge(void);
 143 
 144 JNIEXPORT jlong JNICALL
 145 JVM_TotalMemory(void);
 146 
 147 JNIEXPORT jlong JNICALL
 148 JVM_FreeMemory(void);
 149 
 150 JNIEXPORT jlong JNICALL
 151 JVM_MaxMemory(void);
 152 
 153 JNIEXPORT jint JNICALL
 154 JVM_ActiveProcessorCount(void);
 155 
 156 JNIEXPORT void * JNICALL
 157 JVM_LoadLibrary(const char *name);
 158 
 159 JNIEXPORT void JNICALL
 160 JVM_UnloadLibrary(void * handle);
 161 
 162 JNIEXPORT void * JNICALL
 163 JVM_FindLibraryEntry(void *handle, const char *name);
 164 
 165 JNIEXPORT jboolean JNICALL
 166 JVM_IsSupportedJNIVersion(jint version);
 167 
 168 JNIEXPORT jobjectArray JNICALL
 169 JVM_GetVmArguments(JNIEnv *env);
 170 
 171 
 172 /*
 173  * java.lang.Throwable
 174  */
 175 JNIEXPORT void JNICALL
 176 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
 177 
 178 /*
 179  * java.lang.StackTraceElement
 180  */
 181 JNIEXPORT void JNICALL
 182 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
 183 
 184 JNIEXPORT void JNICALL
 185 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
 186 
 187 /*
 188  * java.lang.StackWalker
 189  */
 190 enum {
 191   JVM_STACKWALK_FILL_CLASS_REFS_ONLY       = 0x2,
 192   JVM_STACKWALK_GET_CALLER_CLASS           = 0x04,
 193   JVM_STACKWALK_SHOW_HIDDEN_FRAMES         = 0x20,
 194   JVM_STACKWALK_FILL_LIVE_STACK_FRAMES     = 0x100
 195 };
 196 
 197 JNIEXPORT jobject JNICALL
 198 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
 199                   jint skip_frames, jint frame_count, jint start_index,
 200                   jobjectArray frames);
 201 
 202 JNIEXPORT jint JNICALL
 203 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
 204                   jint frame_count, jint start_index,
 205                   jobjectArray frames);
 206 
 207 /*
 208  * java.lang.Thread
 209  */
 210 JNIEXPORT void JNICALL
 211 JVM_StartThread(JNIEnv *env, jobject thread);
 212 
 213 JNIEXPORT void JNICALL
 214 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
 215 
 216 JNIEXPORT jboolean JNICALL
 217 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
 218 
 219 JNIEXPORT void JNICALL
 220 JVM_SuspendThread(JNIEnv *env, jobject thread);
 221 
 222 JNIEXPORT void JNICALL
 223 JVM_ResumeThread(JNIEnv *env, jobject thread);
 224 
 225 JNIEXPORT void JNICALL
 226 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
 227 
 228 JNIEXPORT void JNICALL
 229 JVM_Yield(JNIEnv *env, jclass threadClass);
 230 
 231 JNIEXPORT void JNICALL
 232 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
 233 
 234 JNIEXPORT jobject JNICALL
 235 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
 236 
 237 JNIEXPORT jint JNICALL
 238 JVM_CountStackFrames(JNIEnv *env, jobject thread);
 239 
 240 JNIEXPORT void JNICALL
 241 JVM_Interrupt(JNIEnv *env, jobject thread);
 242 
 243 JNIEXPORT jboolean JNICALL
 244 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
 245 
 246 JNIEXPORT jboolean JNICALL
 247 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
 248 
 249 JNIEXPORT void JNICALL
 250 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
 251 
 252 JNIEXPORT jobjectArray JNICALL
 253 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
 254 
 255 JNIEXPORT void JNICALL
 256 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
 257 
 258 /* getStackTrace() and getAllStackTraces() method */
 259 JNIEXPORT jobjectArray JNICALL
 260 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
 261 
 262 /*
 263  * java.lang.SecurityManager
 264  */
 265 JNIEXPORT jobjectArray JNICALL
 266 JVM_GetClassContext(JNIEnv *env);
 267 
 268 /*
 269  * java.lang.Package
 270  */
 271 JNIEXPORT jstring JNICALL
 272 JVM_GetSystemPackage(JNIEnv *env, jstring name);
 273 
 274 JNIEXPORT jobjectArray JNICALL
 275 JVM_GetSystemPackages(JNIEnv *env);
 276 
 277 /*
 278  * java.lang.ref.Reference
 279  */
 280 JNIEXPORT jobject JNICALL
 281 JVM_GetAndClearReferencePendingList(JNIEnv *env);
 282 
 283 JNIEXPORT jboolean JNICALL
 284 JVM_HasReferencePendingList(JNIEnv *env);
 285 
 286 JNIEXPORT void JNICALL
 287 JVM_WaitForReferencePendingList(JNIEnv *env);
 288 
 289 /*
 290  * java.io.ObjectInputStream
 291  */
 292 JNIEXPORT jobject JNICALL
 293 JVM_LatestUserDefinedLoader(JNIEnv *env);
 294 
 295 /*
 296  * java.lang.reflect.Array
 297  */
 298 JNIEXPORT jint JNICALL
 299 JVM_GetArrayLength(JNIEnv *env, jobject arr);
 300 
 301 JNIEXPORT jobject JNICALL
 302 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
 303 
 304 JNIEXPORT jvalue JNICALL
 305 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
 306 
 307 JNIEXPORT void JNICALL
 308 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
 309 
 310 JNIEXPORT void JNICALL
 311 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
 312                              unsigned char vCode);
 313 
 314 JNIEXPORT jobject JNICALL
 315 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
 316 
 317 JNIEXPORT jobject JNICALL
 318 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
 319 
 320 
 321 /*
 322  * Returns the immediate caller class of the native method invoking
 323  * JVM_GetCallerClass.  The Method.invoke and other frames due to
 324  * reflection machinery are skipped.
 325  *
 326  * The caller is expected to be marked with
 327  * jdk.internal.reflect.CallerSensitive. The JVM will throw an
 328  * error if it is not marked properly.
 329  */
 330 JNIEXPORT jclass JNICALL
 331 JVM_GetCallerClass(JNIEnv *env);
 332 
 333 
 334 /*
 335  * Find primitive classes
 336  * utf: class name
 337  */
 338 JNIEXPORT jclass JNICALL
 339 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
 340 
 341 
 342 /*
 343  * Find a class from a boot class loader. Returns NULL if class not found.
 344  */
 345 JNIEXPORT jclass JNICALL
 346 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
 347 
 348 /*
 349  * Find a class from a given class loader.  Throws ClassNotFoundException.
 350  *  name:   name of class
 351  *  init:   whether initialization is done
 352  *  loader: class loader to look up the class. This may not be the same as the caller's
 353  *          class loader.
 354  *  caller: initiating class. The initiating class may be null when a security
 355  *          manager is not installed.
 356  */
 357 JNIEXPORT jclass JNICALL
 358 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
 359                         jobject loader, jclass caller);
 360 
 361 /*
 362  * Find a class from a given class.
 363  */
 364 JNIEXPORT jclass JNICALL
 365 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
 366                              jclass from);
 367 
 368 /* Find a loaded class cached by the VM */
 369 JNIEXPORT jclass JNICALL
 370 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
 371 
 372 /* Define a class */
 373 JNIEXPORT jclass JNICALL
 374 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
 375                 jsize len, jobject pd);
 376 
 377 /* Define a class with a source (added in JDK1.5) */
 378 JNIEXPORT jclass JNICALL
 379 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
 380                           const jbyte *buf, jsize len, jobject pd,
 381                           const char *source);
 382 
 383 /*
 384  * Module support funcions
 385  */
 386 
 387 /*
 388  * Define a module with the specified packages and bind the module to the
 389  * given class loader.
 390  *  module:       module to define
 391  *  is_open:      specifies if module is open (currently ignored)
 392  *  version:      the module version
 393  *  location:     the module location
 394  *  packages:     list of packages in the module
 395  *  num_packages: number of packages in the module
 396  */
 397 JNIEXPORT void JNICALL
 398 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
 399                  jstring location, const char* const* packages, jsize num_packages);
 400 
 401 /*
 402  * Set the boot loader's unnamed module.
 403  *  module: boot loader's unnamed module
 404  */
 405 JNIEXPORT void JNICALL
 406 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
 407 
 408 /*
 409  * Do a qualified export of a package.
 410  *  from_module: module containing the package to export
 411  *  package:     name of the package to export
 412  *  to_module:   module to export the package to
 413  */
 414 JNIEXPORT void JNICALL
 415 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
 416 
 417 /*
 418  * Do an export of a package to all unnamed modules.
 419  *  from_module: module containing the package to export
 420  *  package:     name of the package to export to all unnamed modules
 421  */
 422 JNIEXPORT void JNICALL
 423 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
 424 
 425 /*
 426  * Do an unqualified export of a package.
 427  *  from_module: module containing the package to export
 428  *  package:     name of the package to export
 429  */
 430 JNIEXPORT void JNICALL
 431 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
 432 
 433 /*
 434  * Add a module to the list of modules that a given module can read.
 435  *  from_module:   module requesting read access
 436  *  source_module: module that from_module wants to read
 437  */
 438 JNIEXPORT void JNICALL
 439 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
 440 
 441 /*
 442  * Reflection support functions
 443  */
 444 
 445 JNIEXPORT jstring JNICALL
 446 JVM_GetClassName(JNIEnv *env, jclass cls);
 447 
 448 JNIEXPORT jobjectArray JNICALL
 449 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
 450 
 451 JNIEXPORT jboolean JNICALL
 452 JVM_IsInterface(JNIEnv *env, jclass cls);
 453 
 454 JNIEXPORT jobjectArray JNICALL
 455 JVM_GetClassSigners(JNIEnv *env, jclass cls);
 456 
 457 JNIEXPORT void JNICALL
 458 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
 459 
 460 JNIEXPORT jobject JNICALL
 461 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
 462 
 463 JNIEXPORT jboolean JNICALL
 464 JVM_IsArrayClass(JNIEnv *env, jclass cls);
 465 
 466 JNIEXPORT jboolean JNICALL
 467 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
 468 
 469 JNIEXPORT jint JNICALL
 470 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
 471 
 472 JNIEXPORT jobjectArray JNICALL
 473 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
 474 
 475 JNIEXPORT jclass JNICALL
 476 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
 477 
 478 JNIEXPORT jstring JNICALL
 479 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
 480 
 481 /* Generics support (JDK 1.5) */
 482 JNIEXPORT jstring JNICALL
 483 JVM_GetClassSignature(JNIEnv *env, jclass cls);
 484 
 485 /* Annotations support (JDK 1.5) */
 486 JNIEXPORT jbyteArray JNICALL
 487 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
 488 
 489 /* Type use annotations support (JDK 1.8) */
 490 
 491 JNIEXPORT jbyteArray JNICALL
 492 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
 493 
 494 JNIEXPORT jbyteArray JNICALL
 495 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
 496 
 497 JNIEXPORT jbyteArray JNICALL
 498 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
 499 
 500 /*
 501  * New (JDK 1.4) reflection implementation
 502  */
 503 
 504 JNIEXPORT jobjectArray JNICALL
 505 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 506 
 507 JNIEXPORT jobjectArray JNICALL
 508 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 509 
 510 JNIEXPORT jobjectArray JNICALL
 511 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 512 
 513 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
 514    This returns the access flags for the class as specified in the
 515    class file rather than searching the InnerClasses attribute (if
 516    present) to find the source-level access flags. Only the values of
 517    the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
 518    valid. */
 519 JNIEXPORT jint JNICALL
 520 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
 521 
 522 /* The following two reflection routines are still needed due to startup time issues */
 523 /*
 524  * java.lang.reflect.Method
 525  */
 526 JNIEXPORT jobject JNICALL
 527 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
 528 
 529 /*
 530  * java.lang.reflect.Constructor
 531  */
 532 JNIEXPORT jobject JNICALL
 533 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
 534 
 535 /*
 536  * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
 537  */
 538 
 539 JNIEXPORT jobject JNICALL
 540 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
 541 
 542 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
 543 (JNIEnv *env, jobject unused, jobject jcpool);
 544 
 545 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
 546 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 547 
 548 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
 549 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 550 
 551 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
 552 (JNIEnv *env, jobject obj, jobject unused, jint index);
 553 
 554 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
 555 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 556 
 557 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
 558 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 559 
 560 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
 561 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 562 
 563 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
 564 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 565 
 566 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
 567 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 568 
 569 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
 570 (JNIEnv *env, jobject obj, jobject unused, jint index);
 571 
 572 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
 573 (JNIEnv *env, jobject obj, jobject unused, jint index);
 574 
 575 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
 576 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 577 
 578 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
 579 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 580 
 581 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
 582 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 583 
 584 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
 585 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 586 
 587 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
 588 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 589 
 590 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
 591 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 592 
 593 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
 594 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 595 
 596 /*
 597  * Parameter reflection
 598  */
 599 
 600 JNIEXPORT jobjectArray JNICALL
 601 JVM_GetMethodParameters(JNIEnv *env, jobject method);
 602 
 603 /*
 604  * java.security.*
 605  */
 606 
 607 JNIEXPORT jobject JNICALL
 608 JVM_DoPrivileged(JNIEnv *env, jclass cls,
 609                  jobject action, jobject context, jboolean wrapException);
 610 
 611 JNIEXPORT jobject JNICALL
 612 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
 613 
 614 JNIEXPORT jobject JNICALL
 615 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
 616 
 617 /*
 618  * Signal support, used to implement the shutdown sequence.  Every VM must
 619  * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
 620  * (^C) and the latter for external termination (kill, system shutdown, etc.).
 621  * Other platform-dependent signal values may also be supported.
 622  */
 623 
 624 JNIEXPORT void * JNICALL
 625 JVM_RegisterSignal(jint sig, void *handler);
 626 
 627 JNIEXPORT jboolean JNICALL
 628 JVM_RaiseSignal(jint sig);
 629 
 630 JNIEXPORT jint JNICALL
 631 JVM_FindSignal(const char *name);
 632 
 633 /*
 634  * Retrieve the assertion directives for the specified class.
 635  */
 636 JNIEXPORT jboolean JNICALL
 637 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
 638 
 639 /*
 640  * Retrieve the assertion directives from the VM.
 641  */
 642 JNIEXPORT jobject JNICALL
 643 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
 644 
 645 /*
 646  * java.util.concurrent.atomic.AtomicLong
 647  */
 648 JNIEXPORT jboolean JNICALL
 649 JVM_SupportsCX8(void);
 650 
 651 /*
 652  * com.sun.dtrace.jsdt support
 653  */
 654 
 655 #define JVM_TRACING_DTRACE_VERSION 1
 656 
 657 /*
 658  * Structure to pass one probe description to JVM
 659  */
 660 typedef struct {
 661     jmethodID method;
 662     jstring   function;
 663     jstring   name;
 664     void*            reserved[4];     // for future use
 665 } JVM_DTraceProbe;
 666 
 667 /**
 668  * Encapsulates the stability ratings for a DTrace provider field
 669  */
 670 typedef struct {
 671     jint nameStability;
 672     jint dataStability;
 673     jint dependencyClass;
 674 } JVM_DTraceInterfaceAttributes;
 675 
 676 /*
 677  * Structure to pass one provider description to JVM
 678  */
 679 typedef struct {
 680     jstring                       name;
 681     JVM_DTraceProbe*              probes;
 682     jint                          probe_count;
 683     JVM_DTraceInterfaceAttributes providerAttributes;
 684     JVM_DTraceInterfaceAttributes moduleAttributes;
 685     JVM_DTraceInterfaceAttributes functionAttributes;
 686     JVM_DTraceInterfaceAttributes nameAttributes;
 687     JVM_DTraceInterfaceAttributes argsAttributes;
 688     void*                         reserved[4]; // for future use
 689 } JVM_DTraceProvider;
 690 
 691 /*
 692  * Get the version number the JVM was built with
 693  */
 694 JNIEXPORT jint JNICALL
 695 JVM_DTraceGetVersion(JNIEnv* env);
 696 
 697 /*
 698  * Register new probe with given signature, return global handle
 699  *
 700  * The version passed in is the version that the library code was
 701  * built with.
 702  */
 703 JNIEXPORT jlong JNICALL
 704 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
 705   jint providers_count, JVM_DTraceProvider* providers);
 706 
 707 /*
 708  * Check JSDT probe
 709  */
 710 JNIEXPORT jboolean JNICALL
 711 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
 712 
 713 /*
 714  * Destroy custom DOF
 715  */
 716 JNIEXPORT void JNICALL
 717 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
 718 
 719 /*
 720  * Check to see if DTrace is supported by OS
 721  */
 722 JNIEXPORT jboolean JNICALL
 723 JVM_DTraceIsSupported(JNIEnv* env);
 724 
 725 /*************************************************************************
 726  PART 2: Support for the Verifier and Class File Format Checker
 727  ************************************************************************/
 728 /*
 729  * Return the class name in UTF format. The result is valid
 730  * until JVM_ReleaseUTf is called.
 731  *
 732  * The caller must treat the string as a constant and not modify it
 733  * in any way.
 734  */
 735 JNIEXPORT const char * JNICALL
 736 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
 737 
 738 /*
 739  * Returns the constant pool types in the buffer provided by "types."
 740  */
 741 JNIEXPORT void JNICALL
 742 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
 743 
 744 /*
 745  * Returns the number of Constant Pool entries.
 746  */
 747 JNIEXPORT jint JNICALL
 748 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
 749 
 750 /*
 751  * Returns the number of *declared* fields or methods.
 752  */
 753 JNIEXPORT jint JNICALL
 754 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
 755 
 756 JNIEXPORT jint JNICALL
 757 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
 758 
 759 /*
 760  * Returns the CP indexes of exceptions raised by a given method.
 761  * Places the result in the given buffer.
 762  *
 763  * The method is identified by method_index.
 764  */
 765 JNIEXPORT void JNICALL
 766 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
 767                                 unsigned short *exceptions);
 768 /*
 769  * Returns the number of exceptions raised by a given method.
 770  * The method is identified by method_index.
 771  */
 772 JNIEXPORT jint JNICALL
 773 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
 774 
 775 /*
 776  * Returns the byte code sequence of a given method.
 777  * Places the result in the given buffer.
 778  *
 779  * The method is identified by method_index.
 780  */
 781 JNIEXPORT void JNICALL
 782 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
 783                         unsigned char *code);
 784 
 785 /*
 786  * Returns the length of the byte code sequence of a given method.
 787  * The method is identified by method_index.
 788  */
 789 JNIEXPORT jint JNICALL
 790 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
 791 
 792 /*
 793  * A structure used to a capture exception table entry in a Java method.
 794  */
 795 typedef struct {
 796     jint start_pc;
 797     jint end_pc;
 798     jint handler_pc;
 799     jint catchType;
 800 } JVM_ExceptionTableEntryType;
 801 
 802 /*
 803  * Returns the exception table entry at entry_index of a given method.
 804  * Places the result in the given buffer.
 805  *
 806  * The method is identified by method_index.
 807  */
 808 JNIEXPORT void JNICALL
 809 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
 810                                    jint entry_index,
 811                                    JVM_ExceptionTableEntryType *entry);
 812 
 813 /*
 814  * Returns the length of the exception table of a given method.
 815  * The method is identified by method_index.
 816  */
 817 JNIEXPORT jint JNICALL
 818 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
 819 
 820 /*
 821  * Returns the modifiers of a given field.
 822  * The field is identified by field_index.
 823  */
 824 JNIEXPORT jint JNICALL
 825 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
 826 
 827 /*
 828  * Returns the modifiers of a given method.
 829  * The method is identified by method_index.
 830  */
 831 JNIEXPORT jint JNICALL
 832 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
 833 
 834 /*
 835  * Returns the number of local variables of a given method.
 836  * The method is identified by method_index.
 837  */
 838 JNIEXPORT jint JNICALL
 839 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
 840 
 841 /*
 842  * Returns the number of arguments (including this pointer) of a given method.
 843  * The method is identified by method_index.
 844  */
 845 JNIEXPORT jint JNICALL
 846 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
 847 
 848 /*
 849  * Returns the maximum amount of stack (in words) used by a given method.
 850  * The method is identified by method_index.
 851  */
 852 JNIEXPORT jint JNICALL
 853 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
 854 
 855 /*
 856  * Is a given method a constructor.
 857  * The method is identified by method_index.
 858  */
 859 JNIEXPORT jboolean JNICALL
 860 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
 861 
 862 /*
 863  * Is the given method generated by the VM.
 864  * The method is identified by method_index.
 865  */
 866 JNIEXPORT jboolean JNICALL
 867 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
 868 
 869 /*
 870  * Returns the name of a given method in UTF format.
 871  * The result remains valid until JVM_ReleaseUTF is called.
 872  *
 873  * The caller must treat the string as a constant and not modify it
 874  * in any way.
 875  */
 876 JNIEXPORT const char * JNICALL
 877 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
 878 
 879 /*
 880  * Returns the signature of a given method in UTF format.
 881  * The result remains valid until JVM_ReleaseUTF is called.
 882  *
 883  * The caller must treat the string as a constant and not modify it
 884  * in any way.
 885  */
 886 JNIEXPORT const char * JNICALL
 887 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
 888 
 889 /*
 890  * Returns the name of the field referred to at a given constant pool
 891  * index.
 892  *
 893  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 894  * is called.
 895  *
 896  * The caller must treat the string as a constant and not modify it
 897  * in any way.
 898  */
 899 JNIEXPORT const char * JNICALL
 900 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
 901 
 902 /*
 903  * Returns the name of the method referred to at a given constant pool
 904  * index.
 905  *
 906  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 907  * is called.
 908  *
 909  * The caller must treat the string as a constant and not modify it
 910  * in any way.
 911  */
 912 JNIEXPORT const char * JNICALL
 913 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
 914 
 915 /*
 916  * Returns the signature of the method referred to at a given constant pool
 917  * index.
 918  *
 919  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 920  * is called.
 921  *
 922  * The caller must treat the string as a constant and not modify it
 923  * in any way.
 924  */
 925 JNIEXPORT const char * JNICALL
 926 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
 927 
 928 /*
 929  * Returns the signature of the field referred to at a given constant pool
 930  * index.
 931  *
 932  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 933  * is called.
 934  *
 935  * The caller must treat the string as a constant and not modify it
 936  * in any way.
 937  */
 938 JNIEXPORT const char * JNICALL
 939 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
 940 
 941 /*
 942  * Returns the class name referred to at a given constant pool 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_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
 952 
 953 /*
 954  * Returns the class name referred to at a given constant pool index.
 955  *
 956  * The constant pool entry must refer to a CONSTANT_Fieldref.
 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_GetCPFieldClassNameUTF(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 CONSTANT_Methodref or
 971  * CONSTANT_InterfaceMethodref.
 972  *
 973  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 974  * is called.
 975  *
 976  * The caller must treat the string as a constant and not modify it
 977  * in any way.
 978  */
 979 JNIEXPORT const char * JNICALL
 980 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
 981 
 982 /*
 983  * Returns the modifiers of a field in calledClass. The field is
 984  * referred to in class cb at constant pool entry index.
 985  *
 986  * The caller must treat the string as a constant and not modify it
 987  * in any way.
 988  *
 989  * Returns -1 if the field does not exist in calledClass.
 990  */
 991 JNIEXPORT jint JNICALL
 992 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
 993 
 994 /*
 995  * Returns the modifiers of a method in calledClass. The method is
 996  * referred to in class cb at constant pool entry index.
 997  *
 998  * Returns -1 if the method does not exist in calledClass.
 999  */
1000 JNIEXPORT jint JNICALL
1001 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1002 
1003 /*
1004  * Releases the UTF string obtained from the VM.
1005  */
1006 JNIEXPORT void JNICALL
1007 JVM_ReleaseUTF(const char *utf);
1008 
1009 /*
1010  * Compare if two classes are in the same package.
1011  */
1012 JNIEXPORT jboolean JNICALL
1013 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1014 
1015 /* Get classfile constants */
1016 #include "classfile_constants.h"
1017 
1018 /*
1019  * A function defined by the byte-code verifier and called by the VM.
1020  * This is not a function implemented in the VM.
1021  *
1022  * Returns JNI_FALSE if verification fails. A detailed error message
1023  * will be places in msg_buf, whose length is specified by buf_len.
1024  */
1025 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1026                                   jclass cb,
1027                                   char * msg_buf,
1028                                   jint buf_len);
1029 
1030 
1031 /*
1032  * Support for a VM-independent class format checker.
1033  */
1034 typedef struct {
1035     unsigned long code;    /* byte code */
1036     unsigned long excs;    /* exceptions */
1037     unsigned long etab;    /* catch table */
1038     unsigned long lnum;    /* line number */
1039     unsigned long lvar;    /* local vars */
1040 } method_size_info;
1041 
1042 typedef struct {
1043     unsigned int constants;    /* constant pool */
1044     unsigned int fields;
1045     unsigned int methods;
1046     unsigned int interfaces;
1047     unsigned int fields2;      /* number of static 2-word fields */
1048     unsigned int innerclasses; /* # of records in InnerClasses attr */
1049 
1050     method_size_info clinit;   /* memory used in clinit */
1051     method_size_info main;     /* used everywhere else */
1052 } class_size_info;
1053 
1054 /*
1055  * Functions defined in libjava.so to perform string conversions.
1056  *
1057  */
1058 
1059 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1060 
1061 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1062 
1063 /* This is the function defined in libjava.so that performs class
1064  * format checks. This functions fills in size information about
1065  * the class file and returns:
1066  *
1067  *   0: good
1068  *  -1: out of memory
1069  *  -2: bad format
1070  *  -3: unsupported version
1071  *  -4: bad class name
1072  */
1073 
1074 typedef jint (*check_format_fn_t)(char *class_name,
1075                                   unsigned char *data,
1076                                   unsigned int data_size,
1077                                   class_size_info *class_size,
1078                                   char *message_buffer,
1079                                   jint buffer_length,
1080                                   jboolean measure_only,
1081                                   jboolean check_relaxed);
1082 
1083 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1084                                         JVM_ACC_FINAL | \
1085                                         JVM_ACC_SUPER | \
1086                                         JVM_ACC_INTERFACE | \
1087                                         JVM_ACC_ABSTRACT | \
1088                                         JVM_ACC_ANNOTATION | \
1089                                         JVM_ACC_ENUM | \
1090                                         JVM_ACC_SYNTHETIC)
1091 
1092 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1093                                         JVM_ACC_PRIVATE | \
1094                                         JVM_ACC_PROTECTED | \
1095                                         JVM_ACC_STATIC | \
1096                                         JVM_ACC_FINAL | \
1097                                         JVM_ACC_VOLATILE | \
1098                                         JVM_ACC_TRANSIENT | \
1099                                         JVM_ACC_ENUM | \
1100                                         JVM_ACC_SYNTHETIC)
1101 
1102 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1103                                          JVM_ACC_PRIVATE | \
1104                                          JVM_ACC_PROTECTED | \
1105                                          JVM_ACC_STATIC | \
1106                                          JVM_ACC_FINAL | \
1107                                          JVM_ACC_SYNCHRONIZED | \
1108                                          JVM_ACC_BRIDGE | \
1109                                          JVM_ACC_VARARGS | \
1110                                          JVM_ACC_NATIVE | \
1111                                          JVM_ACC_ABSTRACT | \
1112                                          JVM_ACC_STRICT | \
1113                                          JVM_ACC_SYNTHETIC)
1114 
1115 /*
1116  * This is the function defined in libjava.so to perform path
1117  * canonicalization. VM call this function before opening jar files
1118  * to load system classes.
1119  *
1120  */
1121 
1122 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1123 
1124 /*************************************************************************
1125  PART 3: I/O and Network Support
1126  ************************************************************************/
1127 
1128 /*
1129  * Convert a pathname into native format.  This function does syntactic
1130  * cleanup, such as removing redundant separator characters.  It modifies
1131  * the given pathname string in place.
1132  */
1133 JNIEXPORT char * JNICALL
1134 JVM_NativePath(char *);
1135 
1136 /*
1137  * The standard printing functions supported by the Java VM. (Should they
1138  * be renamed to JVM_* in the future?
1139  */
1140 
1141 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1142  *  respectively, with the following differences:
1143  * - The string written to str is always zero-terminated, also in case of
1144  *   truncation (count is too small to hold the result string), unless count
1145  *   is 0. In case of truncation count-1 characters are written and '\0'
1146  *   appendend.
1147  * - If count is too small to hold the whole string, -1 is returned across
1148  *   all platforms. */
1149 
1150 JNIEXPORT int
1151 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1152 
1153 JNIEXPORT int
1154 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1155 
1156 JNIEXPORT int
1157 jio_fprintf(FILE *, const char *fmt, ...);
1158 
1159 JNIEXPORT int
1160 jio_vfprintf(FILE *, const char *fmt, va_list args);
1161 
1162 
1163 JNIEXPORT void * JNICALL
1164 JVM_RawMonitorCreate(void);
1165 
1166 JNIEXPORT void JNICALL
1167 JVM_RawMonitorDestroy(void *mon);
1168 
1169 JNIEXPORT jint JNICALL
1170 JVM_RawMonitorEnter(void *mon);
1171 
1172 JNIEXPORT void JNICALL
1173 JVM_RawMonitorExit(void *mon);
1174 
1175 /*
1176  * java.lang.management support
1177  */
1178 JNIEXPORT void* JNICALL
1179 JVM_GetManagement(jint version);
1180 
1181 /*
1182  * com.sun.tools.attach.VirtualMachine support
1183  *
1184  * Initialize the agent properties with the properties maintained in the VM.
1185  */
1186 JNIEXPORT jobject JNICALL
1187 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1188 
1189 JNIEXPORT jstring JNICALL
1190 JVM_GetTemporaryDirectory(JNIEnv *env);
1191 
1192 /* Generics reflection support.
1193  *
1194  * Returns information about the given class's EnclosingMethod
1195  * attribute, if present, or null if the class had no enclosing
1196  * method.
1197  *
1198  * If non-null, the returned array contains three elements. Element 0
1199  * is the java.lang.Class of which the enclosing method is a member,
1200  * and elements 1 and 2 are the java.lang.Strings for the enclosing
1201  * method's name and descriptor, respectively.
1202  */
1203 JNIEXPORT jobjectArray JNICALL
1204 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1205 
1206 /* =========================================================================
1207  * The following defines a private JVM interface that the JDK can query
1208  * for the JVM version and capabilities.  sun.misc.Version defines
1209  * the methods for getting the VM version and its capabilities.
1210  *
1211  * When a new bit is added, the following should be updated to provide
1212  * access to the new capability:
1213  *    HS:   JVM_GetVersionInfo and Abstract_VM_Version class
1214  *    SDK:  Version class
1215  *
1216  * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1217  * JVM to query for the JDK version and capabilities.
1218  *
1219  * When a new bit is added, the following should be updated to provide
1220  * access to the new capability:
1221  *    HS:   JDK_Version class
1222  *    SDK:  JDK_GetVersionInfo0
1223  *
1224  * ==========================================================================
1225  */
1226 typedef struct {
1227     unsigned int jvm_version;  /* Encoded $VNUM as specified by JEP-223 */
1228     unsigned int patch_version : 8; /* JEP-223 patch version */
1229     unsigned int reserved3 : 8;
1230     unsigned int reserved1 : 16;
1231     unsigned int reserved2;
1232 
1233     /* The following bits represents JVM supports that JDK has dependency on.
1234      * JDK can use these bits to determine which JVM version
1235      * and support it has to maintain runtime compatibility.
1236      *
1237      * When a new bit is added in a minor or update release, make sure
1238      * the new bit is also added in the main/baseline.
1239      */
1240     unsigned int is_attach_supported : 1;
1241     unsigned int : 31;
1242     unsigned int : 32;
1243     unsigned int : 32;
1244 } jvm_version_info;
1245 
1246 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1247 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1248 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1249 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1250 
1251 JNIEXPORT void JNICALL
1252 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1253 
1254 typedef struct {
1255     unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1256     unsigned int patch_version : 8; /* JEP-223 patch version */
1257     unsigned int reserved3 : 8;
1258     unsigned int reserved1 : 16;
1259     unsigned int reserved2;
1260 
1261     /* The following bits represents new JDK supports that VM has dependency on.
1262      * VM implementation can use these bits to determine which JDK version
1263      * and support it has to maintain runtime compatibility.
1264      *
1265      * When a new bit is added in a minor or update release, make sure
1266      * the new bit is also added in the main/baseline.
1267      */
1268     unsigned int thread_park_blocker : 1;
1269     unsigned int post_vm_init_hook_enabled : 1;
1270     unsigned int pending_list_uses_discovered_field : 1;
1271     unsigned int : 29;
1272     unsigned int : 32;
1273     unsigned int : 32;
1274 } jdk_version_info;
1275 
1276 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1277 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1278 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1279 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1280 
1281 /*
1282  * This is the function JDK_GetVersionInfo0 defined in libjava.so
1283  * that is dynamically looked up by JVM.
1284  */
1285 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1286 
1287 /*
1288  * This structure is used by the launcher to get the default thread
1289  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1290  * version of 1.1.  As it is not supported otherwise, it has been removed
1291  * from jni.h
1292  */
1293 typedef struct JDK1_1InitArgs {
1294     jint version;
1295 
1296     char **properties;
1297     jint checkSource;
1298     jint nativeStackSize;
1299     jint javaStackSize;
1300     jint minHeapSize;
1301     jint maxHeapSize;
1302     jint verifyMode;
1303     char *classpath;
1304 
1305     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1306     void (JNICALL *exit)(jint code);
1307     void (JNICALL *abort)(void);
1308 
1309     jint enableClassGC;
1310     jint enableVerboseGC;
1311     jint disableAsyncGC;
1312     jint verbose;
1313     jboolean debugging;
1314     jint debugPort;
1315 } JDK1_1InitArgs;
1316 
1317 
1318 #ifdef __cplusplus
1319 } /* extern "C" */
1320 
1321 #endif /* __cplusplus */
1322 
1323 #endif /* !_JAVASOFT_JVM_H_ */