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 /* The following two reflection routines are still needed due to startup time issues */
 526 /*
 527  * java.lang.reflect.Method
 528  */
 529 JNIEXPORT jobject JNICALL
 530 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
 531 
 532 /*
 533  * java.lang.reflect.Constructor
 534  */
 535 JNIEXPORT jobject JNICALL
 536 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
 537 
 538 /*
 539  * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
 540  */
 541 
 542 JNIEXPORT jobject JNICALL
 543 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
 544 
 545 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
 546 (JNIEnv *env, jobject unused, jobject jcpool);
 547 
 548 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
 549 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 550 
 551 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
 552 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 553 
 554 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
 555 (JNIEnv *env, jobject obj, jobject unused, jint index);
 556 
 557 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
 558 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 559 
 560 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
 561 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 562 
 563 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
 564 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 565 
 566 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
 567 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 568 
 569 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
 570 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 571 
 572 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
 573 (JNIEnv *env, jobject obj, jobject unused, jint index);
 574 
 575 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
 576 (JNIEnv *env, jobject obj, jobject unused, jint index);
 577 
 578 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
 579 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 580 
 581 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
 582 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 583 
 584 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
 585 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 586 
 587 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
 588 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 589 
 590 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
 591 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 592 
 593 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
 594 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 595 
 596 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
 597 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 598 
 599 /*
 600  * Parameter reflection
 601  */
 602 
 603 JNIEXPORT jobjectArray JNICALL
 604 JVM_GetMethodParameters(JNIEnv *env, jobject method);
 605 
 606 /*
 607  * java.security.*
 608  */
 609 
 610 JNIEXPORT jobject JNICALL
 611 JVM_DoPrivileged(JNIEnv *env, jclass cls,
 612                  jobject action, jobject context, jboolean wrapException);
 613 
 614 JNIEXPORT jobject JNICALL
 615 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
 616 
 617 JNIEXPORT jobject JNICALL
 618 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
 619 
 620 /*
 621  * Signal support, used to implement the shutdown sequence.  Every VM must
 622  * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
 623  * (^C) and the latter for external termination (kill, system shutdown, etc.).
 624  * Other platform-dependent signal values may also be supported.
 625  */
 626 
 627 JNIEXPORT void * JNICALL
 628 JVM_RegisterSignal(jint sig, void *handler);
 629 
 630 JNIEXPORT jboolean JNICALL
 631 JVM_RaiseSignal(jint sig);
 632 
 633 JNIEXPORT jint JNICALL
 634 JVM_FindSignal(const char *name);
 635 
 636 /*
 637  * Retrieve the assertion directives for the specified class.
 638  */
 639 JNIEXPORT jboolean JNICALL
 640 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
 641 
 642 /*
 643  * Retrieve the assertion directives from the VM.
 644  */
 645 JNIEXPORT jobject JNICALL
 646 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
 647 
 648 /*
 649  * java.util.concurrent.atomic.AtomicLong
 650  */
 651 JNIEXPORT jboolean JNICALL
 652 JVM_SupportsCX8(void);
 653 
 654 /*
 655  * com.sun.dtrace.jsdt support
 656  */
 657 
 658 #define JVM_TRACING_DTRACE_VERSION 1
 659 
 660 /*
 661  * Structure to pass one probe description to JVM
 662  */
 663 typedef struct {
 664     jmethodID method;
 665     jstring   function;
 666     jstring   name;
 667     void*            reserved[4];     // for future use
 668 } JVM_DTraceProbe;
 669 
 670 /**
 671  * Encapsulates the stability ratings for a DTrace provider field
 672  */
 673 typedef struct {
 674     jint nameStability;
 675     jint dataStability;
 676     jint dependencyClass;
 677 } JVM_DTraceInterfaceAttributes;
 678 
 679 /*
 680  * Structure to pass one provider description to JVM
 681  */
 682 typedef struct {
 683     jstring                       name;
 684     JVM_DTraceProbe*              probes;
 685     jint                          probe_count;
 686     JVM_DTraceInterfaceAttributes providerAttributes;
 687     JVM_DTraceInterfaceAttributes moduleAttributes;
 688     JVM_DTraceInterfaceAttributes functionAttributes;
 689     JVM_DTraceInterfaceAttributes nameAttributes;
 690     JVM_DTraceInterfaceAttributes argsAttributes;
 691     void*                         reserved[4]; // for future use
 692 } JVM_DTraceProvider;
 693 
 694 /*
 695  * Get the version number the JVM was built with
 696  */
 697 JNIEXPORT jint JNICALL
 698 JVM_DTraceGetVersion(JNIEnv* env);
 699 
 700 /*
 701  * Register new probe with given signature, return global handle
 702  *
 703  * The version passed in is the version that the library code was
 704  * built with.
 705  */
 706 JNIEXPORT jlong JNICALL
 707 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
 708   jint providers_count, JVM_DTraceProvider* providers);
 709 
 710 /*
 711  * Check JSDT probe
 712  */
 713 JNIEXPORT jboolean JNICALL
 714 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
 715 
 716 /*
 717  * Destroy custom DOF
 718  */
 719 JNIEXPORT void JNICALL
 720 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
 721 
 722 /*
 723  * Check to see if DTrace is supported by OS
 724  */
 725 JNIEXPORT jboolean JNICALL
 726 JVM_DTraceIsSupported(JNIEnv* env);
 727 
 728 /*************************************************************************
 729  PART 2: Support for the Verifier and Class File Format Checker
 730  ************************************************************************/
 731 /*
 732  * Return the class name in UTF format. The result is valid
 733  * until JVM_ReleaseUTf is called.
 734  *
 735  * The caller must treat the string as a constant and not modify it
 736  * in any way.
 737  */
 738 JNIEXPORT const char * JNICALL
 739 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
 740 
 741 /*
 742  * Returns the constant pool types in the buffer provided by "types."
 743  */
 744 JNIEXPORT void JNICALL
 745 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
 746 
 747 /*
 748  * Returns the number of Constant Pool entries.
 749  */
 750 JNIEXPORT jint JNICALL
 751 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
 752 
 753 /*
 754  * Returns the number of *declared* fields or methods.
 755  */
 756 JNIEXPORT jint JNICALL
 757 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
 758 
 759 JNIEXPORT jint JNICALL
 760 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
 761 
 762 /*
 763  * Returns the CP indexes of exceptions raised by a given method.
 764  * Places the result in the given buffer.
 765  *
 766  * The method is identified by method_index.
 767  */
 768 JNIEXPORT void JNICALL
 769 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
 770                                 unsigned short *exceptions);
 771 /*
 772  * Returns the number of exceptions raised by a given method.
 773  * The method is identified by method_index.
 774  */
 775 JNIEXPORT jint JNICALL
 776 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
 777 
 778 /*
 779  * Returns the byte code sequence of a given method.
 780  * Places the result in the given buffer.
 781  *
 782  * The method is identified by method_index.
 783  */
 784 JNIEXPORT void JNICALL
 785 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
 786                         unsigned char *code);
 787 
 788 /*
 789  * Returns the length of the byte code sequence of a given method.
 790  * The method is identified by method_index.
 791  */
 792 JNIEXPORT jint JNICALL
 793 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
 794 
 795 /*
 796  * A structure used to a capture exception table entry in a Java method.
 797  */
 798 typedef struct {
 799     jint start_pc;
 800     jint end_pc;
 801     jint handler_pc;
 802     jint catchType;
 803 } JVM_ExceptionTableEntryType;
 804 
 805 /*
 806  * Returns the exception table entry at entry_index of a given method.
 807  * Places the result in the given buffer.
 808  *
 809  * The method is identified by method_index.
 810  */
 811 JNIEXPORT void JNICALL
 812 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
 813                                    jint entry_index,
 814                                    JVM_ExceptionTableEntryType *entry);
 815 
 816 /*
 817  * Returns the length of the exception table of a given method.
 818  * The method is identified by method_index.
 819  */
 820 JNIEXPORT jint JNICALL
 821 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
 822 
 823 /*
 824  * Returns the modifiers of a given field.
 825  * The field is identified by field_index.
 826  */
 827 JNIEXPORT jint JNICALL
 828 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
 829 
 830 /*
 831  * Returns the modifiers of a given method.
 832  * The method is identified by method_index.
 833  */
 834 JNIEXPORT jint JNICALL
 835 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
 836 
 837 /*
 838  * Returns the number of local variables of a given method.
 839  * The method is identified by method_index.
 840  */
 841 JNIEXPORT jint JNICALL
 842 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
 843 
 844 /*
 845  * Returns the number of arguments (including this pointer) of a given method.
 846  * The method is identified by method_index.
 847  */
 848 JNIEXPORT jint JNICALL
 849 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
 850 
 851 /*
 852  * Returns the maximum amount of stack (in words) used by a given method.
 853  * The method is identified by method_index.
 854  */
 855 JNIEXPORT jint JNICALL
 856 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
 857 
 858 /*
 859  * Is a given method a constructor.
 860  * The method is identified by method_index.
 861  */
 862 JNIEXPORT jboolean JNICALL
 863 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
 864 
 865 /*
 866  * Is the given method generated by the VM.
 867  * The method is identified by method_index.
 868  */
 869 JNIEXPORT jboolean JNICALL
 870 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
 871 
 872 /*
 873  * Returns the name of a given method in UTF format.
 874  * The result remains valid until JVM_ReleaseUTF is called.
 875  *
 876  * The caller must treat the string as a constant and not modify it
 877  * in any way.
 878  */
 879 JNIEXPORT const char * JNICALL
 880 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
 881 
 882 /*
 883  * Returns the signature of a given method in UTF format.
 884  * The result remains valid until JVM_ReleaseUTF is called.
 885  *
 886  * The caller must treat the string as a constant and not modify it
 887  * in any way.
 888  */
 889 JNIEXPORT const char * JNICALL
 890 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
 891 
 892 /*
 893  * Returns the name of the field referred to at a given constant pool
 894  * index.
 895  *
 896  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 897  * is called.
 898  *
 899  * The caller must treat the string as a constant and not modify it
 900  * in any way.
 901  */
 902 JNIEXPORT const char * JNICALL
 903 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
 904 
 905 /*
 906  * Returns the name of the method referred to at a given constant pool
 907  * index.
 908  *
 909  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 910  * is called.
 911  *
 912  * The caller must treat the string as a constant and not modify it
 913  * in any way.
 914  */
 915 JNIEXPORT const char * JNICALL
 916 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
 917 
 918 /*
 919  * Returns the signature of the method referred to at a given constant pool
 920  * index.
 921  *
 922  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 923  * is called.
 924  *
 925  * The caller must treat the string as a constant and not modify it
 926  * in any way.
 927  */
 928 JNIEXPORT const char * JNICALL
 929 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
 930 
 931 /*
 932  * Returns the signature of the field referred to at a given constant pool
 933  * index.
 934  *
 935  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 936  * is called.
 937  *
 938  * The caller must treat the string as a constant and not modify it
 939  * in any way.
 940  */
 941 JNIEXPORT const char * JNICALL
 942 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
 943 
 944 /*
 945  * Returns the class name referred to at a given constant pool index.
 946  *
 947  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 948  * is called.
 949  *
 950  * The caller must treat the string as a constant and not modify it
 951  * in any way.
 952  */
 953 JNIEXPORT const char * JNICALL
 954 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
 955 
 956 /*
 957  * Returns the class name referred to at a given constant pool index.
 958  *
 959  * The constant pool entry must refer to a CONSTANT_Fieldref.
 960  *
 961  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 962  * is called.
 963  *
 964  * The caller must treat the string as a constant and not modify it
 965  * in any way.
 966  */
 967 JNIEXPORT const char * JNICALL
 968 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
 969 
 970 /*
 971  * Returns the class name referred to at a given constant pool index.
 972  *
 973  * The constant pool entry must refer to CONSTANT_Methodref or
 974  * CONSTANT_InterfaceMethodref.
 975  *
 976  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 977  * is called.
 978  *
 979  * The caller must treat the string as a constant and not modify it
 980  * in any way.
 981  */
 982 JNIEXPORT const char * JNICALL
 983 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
 984 
 985 /*
 986  * Returns the modifiers of a field in calledClass. The field is
 987  * referred to in class cb at constant pool entry index.
 988  *
 989  * The caller must treat the string as a constant and not modify it
 990  * in any way.
 991  *
 992  * Returns -1 if the field does not exist in calledClass.
 993  */
 994 JNIEXPORT jint JNICALL
 995 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
 996 
 997 /*
 998  * Returns the modifiers of a method in calledClass. The method is
 999  * referred to in class cb at constant pool entry index.
1000  *
1001  * Returns -1 if the method does not exist in calledClass.
1002  */
1003 JNIEXPORT jint JNICALL
1004 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1005 
1006 /*
1007  * Releases the UTF string obtained from the VM.
1008  */
1009 JNIEXPORT void JNICALL
1010 JVM_ReleaseUTF(const char *utf);
1011 
1012 /*
1013  * Compare if two classes are in the same package.
1014  */
1015 JNIEXPORT jboolean JNICALL
1016 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1017 
1018 /* Get classfile constants */
1019 #include "classfile_constants.h"
1020 
1021 /*
1022  * A function defined by the byte-code verifier and called by the VM.
1023  * This is not a function implemented in the VM.
1024  *
1025  * Returns JNI_FALSE if verification fails. A detailed error message
1026  * will be places in msg_buf, whose length is specified by buf_len.
1027  */
1028 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1029                                   jclass cb,
1030                                   char * msg_buf,
1031                                   jint buf_len);
1032 
1033 
1034 /*
1035  * Support for a VM-independent class format checker.
1036  */
1037 typedef struct {
1038     unsigned long code;    /* byte code */
1039     unsigned long excs;    /* exceptions */
1040     unsigned long etab;    /* catch table */
1041     unsigned long lnum;    /* line number */
1042     unsigned long lvar;    /* local vars */
1043 } method_size_info;
1044 
1045 typedef struct {
1046     unsigned int constants;    /* constant pool */
1047     unsigned int fields;
1048     unsigned int methods;
1049     unsigned int interfaces;
1050     unsigned int fields2;      /* number of static 2-word fields */
1051     unsigned int innerclasses; /* # of records in InnerClasses attr */
1052 
1053     method_size_info clinit;   /* memory used in clinit */
1054     method_size_info main;     /* used everywhere else */
1055 } class_size_info;
1056 
1057 /*
1058  * Functions defined in libjava.so to perform string conversions.
1059  *
1060  */
1061 
1062 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1063 
1064 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1065 
1066 /* This is the function defined in libjava.so that performs class
1067  * format checks. This functions fills in size information about
1068  * the class file and returns:
1069  *
1070  *   0: good
1071  *  -1: out of memory
1072  *  -2: bad format
1073  *  -3: unsupported version
1074  *  -4: bad class name
1075  */
1076 
1077 typedef jint (*check_format_fn_t)(char *class_name,
1078                                   unsigned char *data,
1079                                   unsigned int data_size,
1080                                   class_size_info *class_size,
1081                                   char *message_buffer,
1082                                   jint buffer_length,
1083                                   jboolean measure_only,
1084                                   jboolean check_relaxed);
1085 
1086 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1087                                         JVM_ACC_FINAL | \
1088                                         JVM_ACC_SUPER | \
1089                                         JVM_ACC_INTERFACE | \
1090                                         JVM_ACC_ABSTRACT | \
1091                                         JVM_ACC_ANNOTATION | \
1092                                         JVM_ACC_ENUM | \
1093                                         JVM_ACC_SYNTHETIC)
1094 
1095 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1096                                         JVM_ACC_PRIVATE | \
1097                                         JVM_ACC_PROTECTED | \
1098                                         JVM_ACC_STATIC | \
1099                                         JVM_ACC_FINAL | \
1100                                         JVM_ACC_VOLATILE | \
1101                                         JVM_ACC_TRANSIENT | \
1102                                         JVM_ACC_ENUM | \
1103                                         JVM_ACC_SYNTHETIC)
1104 
1105 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1106                                          JVM_ACC_PRIVATE | \
1107                                          JVM_ACC_PROTECTED | \
1108                                          JVM_ACC_STATIC | \
1109                                          JVM_ACC_FINAL | \
1110                                          JVM_ACC_SYNCHRONIZED | \
1111                                          JVM_ACC_BRIDGE | \
1112                                          JVM_ACC_VARARGS | \
1113                                          JVM_ACC_NATIVE | \
1114                                          JVM_ACC_ABSTRACT | \
1115                                          JVM_ACC_STRICT | \
1116                                          JVM_ACC_SYNTHETIC)
1117 
1118 /*
1119  * This is the function defined in libjava.so to perform path
1120  * canonicalization. VM call this function before opening jar files
1121  * to load system classes.
1122  *
1123  */
1124 
1125 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1126 
1127 /*************************************************************************
1128  PART 3: I/O and Network Support
1129  ************************************************************************/
1130 
1131 /*
1132  * Convert a pathname into native format.  This function does syntactic
1133  * cleanup, such as removing redundant separator characters.  It modifies
1134  * the given pathname string in place.
1135  */
1136 JNIEXPORT char * JNICALL
1137 JVM_NativePath(char *);
1138 
1139 /*
1140  * The standard printing functions supported by the Java VM. (Should they
1141  * be renamed to JVM_* in the future?
1142  */
1143 
1144 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1145  *  respectively, with the following differences:
1146  * - The string written to str is always zero-terminated, also in case of
1147  *   truncation (count is too small to hold the result string), unless count
1148  *   is 0. In case of truncation count-1 characters are written and '\0'
1149  *   appendend.
1150  * - If count is too small to hold the whole string, -1 is returned across
1151  *   all platforms. */
1152 
1153 JNIEXPORT int
1154 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1155 
1156 JNIEXPORT int
1157 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1158 
1159 JNIEXPORT int
1160 jio_fprintf(FILE *, const char *fmt, ...);
1161 
1162 JNIEXPORT int
1163 jio_vfprintf(FILE *, const char *fmt, va_list args);
1164 
1165 
1166 JNIEXPORT void * JNICALL
1167 JVM_RawMonitorCreate(void);
1168 
1169 JNIEXPORT void JNICALL
1170 JVM_RawMonitorDestroy(void *mon);
1171 
1172 JNIEXPORT jint JNICALL
1173 JVM_RawMonitorEnter(void *mon);
1174 
1175 JNIEXPORT void JNICALL
1176 JVM_RawMonitorExit(void *mon);
1177 
1178 /*
1179  * java.lang.management support
1180  */
1181 JNIEXPORT void* JNICALL
1182 JVM_GetManagement(jint version);
1183 
1184 /*
1185  * com.sun.tools.attach.VirtualMachine support
1186  *
1187  * Initialize the agent properties with the properties maintained in the VM.
1188  */
1189 JNIEXPORT jobject JNICALL
1190 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1191 
1192 JNIEXPORT jstring JNICALL
1193 JVM_GetTemporaryDirectory(JNIEnv *env);
1194 
1195 /* Generics reflection support.
1196  *
1197  * Returns information about the given class's EnclosingMethod
1198  * attribute, if present, or null if the class had no enclosing
1199  * method.
1200  *
1201  * If non-null, the returned array contains three elements. Element 0
1202  * is the java.lang.Class of which the enclosing method is a member,
1203  * and elements 1 and 2 are the java.lang.Strings for the enclosing
1204  * method's name and descriptor, respectively.
1205  */
1206 JNIEXPORT jobjectArray JNICALL
1207 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1208 
1209 /* =========================================================================
1210  * The following defines a private JVM interface that the JDK can query
1211  * for the JVM version and capabilities.  sun.misc.Version defines
1212  * the methods for getting the VM version and its capabilities.
1213  *
1214  * When a new bit is added, the following should be updated to provide
1215  * access to the new capability:
1216  *    HS:   JVM_GetVersionInfo and Abstract_VM_Version class
1217  *    SDK:  Version class
1218  *
1219  * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1220  * JVM to query for the JDK version and capabilities.
1221  *
1222  * When a new bit is added, the following should be updated to provide
1223  * access to the new capability:
1224  *    HS:   JDK_Version class
1225  *    SDK:  JDK_GetVersionInfo0
1226  *
1227  * ==========================================================================
1228  */
1229 typedef struct {
1230     unsigned int jvm_version;  /* Encoded $VNUM as specified by JEP-223 */
1231     unsigned int patch_version : 8; /* JEP-223 patch version */
1232     unsigned int reserved3 : 8;
1233     unsigned int reserved1 : 16;
1234     unsigned int reserved2;
1235 
1236     /* The following bits represents JVM supports that JDK has dependency on.
1237      * JDK can use these bits to determine which JVM version
1238      * and support it has to maintain runtime compatibility.
1239      *
1240      * When a new bit is added in a minor or update release, make sure
1241      * the new bit is also added in the main/baseline.
1242      */
1243     unsigned int is_attach_supported : 1;
1244     unsigned int : 31;
1245     unsigned int : 32;
1246     unsigned int : 32;
1247 } jvm_version_info;
1248 
1249 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1250 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1251 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1252 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1253 
1254 JNIEXPORT void JNICALL
1255 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1256 
1257 typedef struct {
1258     unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1259     unsigned int patch_version : 8; /* JEP-223 patch version */
1260     unsigned int reserved3 : 8;
1261     unsigned int reserved1 : 16;
1262     unsigned int reserved2;
1263 
1264     /* The following bits represents new JDK supports that VM has dependency on.
1265      * VM implementation can use these bits to determine which JDK version
1266      * and support it has to maintain runtime compatibility.
1267      *
1268      * When a new bit is added in a minor or update release, make sure
1269      * the new bit is also added in the main/baseline.
1270      */
1271     unsigned int thread_park_blocker : 1;
1272     unsigned int post_vm_init_hook_enabled : 1;
1273     unsigned int pending_list_uses_discovered_field : 1;
1274     unsigned int : 29;
1275     unsigned int : 32;
1276     unsigned int : 32;
1277 } jdk_version_info;
1278 
1279 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1280 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1281 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1282 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1283 
1284 /*
1285  * This is the function JDK_GetVersionInfo0 defined in libjava.so
1286  * that is dynamically looked up by JVM.
1287  */
1288 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1289 
1290 /*
1291  * This structure is used by the launcher to get the default thread
1292  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1293  * version of 1.1.  As it is not supported otherwise, it has been removed
1294  * from jni.h
1295  */
1296 typedef struct JDK1_1InitArgs {
1297     jint version;
1298 
1299     char **properties;
1300     jint checkSource;
1301     jint nativeStackSize;
1302     jint javaStackSize;
1303     jint minHeapSize;
1304     jint maxHeapSize;
1305     jint verifyMode;
1306     char *classpath;
1307 
1308     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1309     void (JNICALL *exit)(jint code);
1310     void (JNICALL *abort)(void);
1311 
1312     jint enableClassGC;
1313     jint enableVerboseGC;
1314     jint disableAsyncGC;
1315     jint verbose;
1316     jboolean debugging;
1317     jint debugPort;
1318 } JDK1_1InitArgs;
1319 
1320 
1321 #ifdef __cplusplus
1322 } /* extern "C" */
1323 
1324 #endif /* __cplusplus */
1325 
1326 #endif /* !_JAVASOFT_JVM_H_ */