1 /*
   2  * Copyright (c) 1997, 2015, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_PRIMS_JVM_H
  26 #define SHARE_VM_PRIMS_JVM_H
  27 
  28 #include "prims/jni.h"
  29 #ifdef TARGET_OS_FAMILY_linux
  30 # include "jvm_linux.h"
  31 #endif
  32 #ifdef TARGET_OS_FAMILY_solaris
  33 # include "jvm_solaris.h"
  34 #endif
  35 #ifdef TARGET_OS_FAMILY_windows
  36 # include "jvm_windows.h"
  37 #endif
  38 #ifdef TARGET_OS_FAMILY_aix
  39 # include "jvm_aix.h"
  40 #endif
  41 #ifdef TARGET_OS_FAMILY_bsd
  42 # include "jvm_bsd.h"
  43 #endif
  44 
  45 #ifndef _JAVASOFT_JVM_H_
  46 #define _JAVASOFT_JVM_H_
  47 
  48 // HotSpot integration note:
  49 //
  50 // This file and jvm.h used with the JDK are identical,
  51 // except for the three includes removed below
  52 
  53 // #include <sys/stat.h>
  54 // #include "jni.h"
  55 // #include "jvm_md.h"
  56 
  57 
  58 #ifdef __cplusplus
  59 extern "C" {
  60 #endif
  61 
  62 /*
  63  * This file contains additional functions exported from the VM.
  64  * These functions are complementary to the standard JNI support.
  65  * There are three parts to this file:
  66  *
  67  * First, this file contains the VM-related functions needed by native
  68  * libraries in the standard Java API. For example, the java.lang.Object
  69  * class needs VM-level functions that wait for and notify monitors.
  70  *
  71  * Second, this file contains the functions and constant definitions
  72  * needed by the byte code verifier and class file format checker.
  73  * These functions allow the verifier and format checker to be written
  74  * in a VM-independent way.
  75  *
  76  * Third, this file contains various I/O and nerwork operations needed
  77  * by the standard Java I/O and network APIs.
  78  */
  79 
  80 /*
  81  * Bump the version number when either of the following happens:
  82  *
  83  * 1. There is a change in JVM_* functions.
  84  *
  85  * 2. There is a change in the contract between VM and Java classes.
  86  *    For example, if the VM relies on a new private field in Thread
  87  *    class.
  88  */
  89 
  90 #define JVM_INTERFACE_VERSION 4
  91 
  92 JNIEXPORT jobjectArray JNICALL
  93 JVM_GetMethodParameters(JNIEnv *env, jobject method);
  94 
  95 JNIEXPORT jint JNICALL
  96 JVM_GetInterfaceVersion(void);
  97 
  98 /*************************************************************************
  99  PART 1: Functions for Native Libraries
 100  ************************************************************************/
 101 /*
 102  * java.lang.Object
 103  */
 104 JNIEXPORT jint JNICALL
 105 JVM_IHashCode(JNIEnv *env, jobject obj);
 106 
 107 JNIEXPORT void JNICALL
 108 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
 109 
 110 JNIEXPORT void JNICALL
 111 JVM_MonitorNotify(JNIEnv *env, jobject obj);
 112 
 113 JNIEXPORT void JNICALL
 114 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
 115 
 116 JNIEXPORT jobject JNICALL
 117 JVM_Clone(JNIEnv *env, jobject obj);
 118 
 119 /*
 120  * java.lang.String
 121  */
 122 JNIEXPORT jstring JNICALL
 123 JVM_InternString(JNIEnv *env, jstring str);
 124 
 125 /*
 126  * java.lang.System
 127  */
 128 JNIEXPORT jlong JNICALL
 129 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
 130 
 131 JNIEXPORT jlong JNICALL
 132 JVM_NanoTime(JNIEnv *env, jclass ignored);
 133 
 134 JNIEXPORT jlong JNICALL
 135 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
 136 
 137 JNIEXPORT void JNICALL
 138 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
 139               jobject dst, jint dst_pos, jint length);
 140 
 141 JNIEXPORT jobject JNICALL
 142 JVM_InitProperties(JNIEnv *env, jobject p);
 143 
 144 JNIEXPORT void JNICALL
 145 JVM_Halt(jint code);
 146 
 147 JNIEXPORT void JNICALL
 148 JVM_GC(void);
 149 
 150 /* Returns the number of real-time milliseconds that have elapsed since the
 151  * least-recently-inspected heap object was last inspected by the garbage
 152  * collector.
 153  *
 154  * For simple stop-the-world collectors this value is just the time
 155  * since the most recent collection.  For generational collectors it is the
 156  * time since the oldest generation was most recently collected.  Other
 157  * collectors are free to return a pessimistic estimate of the elapsed time, or
 158  * simply the time since the last full collection was performed.
 159  *
 160  * Note that in the presence of reference objects, a given object that is no
 161  * longer strongly reachable may have to be inspected multiple times before it
 162  * can be reclaimed.
 163  */
 164 JNIEXPORT jlong JNICALL
 165 JVM_MaxObjectInspectionAge(void);
 166 
 167 JNIEXPORT jlong JNICALL
 168 JVM_TotalMemory(void);
 169 
 170 JNIEXPORT jlong JNICALL
 171 JVM_FreeMemory(void);
 172 
 173 JNIEXPORT jlong JNICALL
 174 JVM_MaxMemory(void);
 175 
 176 JNIEXPORT jint JNICALL
 177 JVM_ActiveProcessorCount(void);
 178 
 179 JNIEXPORT void * JNICALL
 180 JVM_LoadLibrary(const char *name);
 181 
 182 JNIEXPORT void JNICALL
 183 JVM_UnloadLibrary(void * handle);
 184 
 185 JNIEXPORT void * JNICALL
 186 JVM_FindLibraryEntry(void *handle, const char *name);
 187 
 188 JNIEXPORT jboolean JNICALL
 189 JVM_IsSupportedJNIVersion(jint version);
 190 
 191 /*
 192  * java.lang.Throwable
 193  */
 194 JNIEXPORT void JNICALL
 195 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
 196 
 197 JNIEXPORT jint JNICALL
 198 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
 199 
 200 JNIEXPORT jobject JNICALL
 201 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
 202 
 203 /*
 204  * java.lang.Thread
 205  */
 206 JNIEXPORT void JNICALL
 207 JVM_StartThread(JNIEnv *env, jobject thread);
 208 
 209 JNIEXPORT void JNICALL
 210 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
 211 
 212 JNIEXPORT jboolean JNICALL
 213 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
 214 
 215 JNIEXPORT void JNICALL
 216 JVM_SuspendThread(JNIEnv *env, jobject thread);
 217 
 218 JNIEXPORT void JNICALL
 219 JVM_ResumeThread(JNIEnv *env, jobject thread);
 220 
 221 JNIEXPORT void JNICALL
 222 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
 223 
 224 JNIEXPORT void JNICALL
 225 JVM_Yield(JNIEnv *env, jclass threadClass);
 226 
 227 JNIEXPORT void JNICALL
 228 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
 229 
 230 JNIEXPORT jobject JNICALL
 231 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
 232 
 233 JNIEXPORT jint JNICALL
 234 JVM_CountStackFrames(JNIEnv *env, jobject thread);
 235 
 236 JNIEXPORT void JNICALL
 237 JVM_Interrupt(JNIEnv *env, jobject thread);
 238 
 239 JNIEXPORT jboolean JNICALL
 240 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
 241 
 242 JNIEXPORT jboolean JNICALL
 243 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
 244 
 245 JNIEXPORT void JNICALL
 246 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
 247 
 248 JNIEXPORT jobjectArray JNICALL
 249 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
 250 
 251 JNIEXPORT void JNICALL
 252 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
 253 
 254 /* getStackTrace() and getAllStackTraces() method */
 255 JNIEXPORT jobjectArray JNICALL
 256 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
 257 
 258 /*
 259  * java.lang.SecurityManager
 260  */
 261 JNIEXPORT jclass JNICALL
 262 JVM_CurrentLoadedClass(JNIEnv *env);
 263 
 264 JNIEXPORT jobject JNICALL
 265 JVM_CurrentClassLoader(JNIEnv *env);
 266 
 267 JNIEXPORT jobjectArray JNICALL
 268 JVM_GetClassContext(JNIEnv *env);
 269 
 270 JNIEXPORT jint JNICALL
 271 JVM_ClassDepth(JNIEnv *env, jstring name);
 272 
 273 JNIEXPORT jint JNICALL
 274 JVM_ClassLoaderDepth(JNIEnv *env);
 275 
 276 /*
 277  * java.lang.Package
 278  */
 279 JNIEXPORT jstring JNICALL
 280 JVM_GetSystemPackage(JNIEnv *env, jstring name);
 281 
 282 JNIEXPORT jobjectArray JNICALL
 283 JVM_GetSystemPackages(JNIEnv *env);
 284 
 285 /*
 286  * java.io.ObjectInputStream
 287  */
 288 JNIEXPORT jobject JNICALL
 289 JVM_LatestUserDefinedLoader(JNIEnv *env);
 290 
 291 /*
 292  * java.lang.reflect.Array
 293  */
 294 JNIEXPORT jint JNICALL
 295 JVM_GetArrayLength(JNIEnv *env, jobject arr);
 296 
 297 JNIEXPORT jobject JNICALL
 298 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
 299 
 300 JNIEXPORT jvalue JNICALL
 301 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
 302 
 303 JNIEXPORT void JNICALL
 304 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
 305 
 306 JNIEXPORT void JNICALL
 307 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
 308                              unsigned char vCode);
 309 
 310 JNIEXPORT jobject JNICALL
 311 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
 312 
 313 JNIEXPORT jobject JNICALL
 314 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
 315 
 316 /*
 317  * java.lang.Class and java.lang.ClassLoader
 318  */
 319 
 320 #define JVM_CALLER_DEPTH -1
 321 
 322 /*
 323  * Returns the class in which the code invoking the native method
 324  * belongs.
 325  *
 326  * Note that in JDK 1.1, native methods did not create a frame.
 327  * In 1.2, they do. Therefore native methods like Class.forName
 328  * can no longer look at the current frame for the caller class.
 329  */
 330 JNIEXPORT jclass JNICALL
 331 JVM_GetCallerClass(JNIEnv *env, int n);
 332 
 333 /*
 334  * Find primitive classes
 335  * utf: class name
 336  */
 337 JNIEXPORT jclass JNICALL
 338 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
 339 
 340 /*
 341  * Find a class from a boot class loader. Returns NULL if class not found.
 342  */
 343 JNIEXPORT jclass JNICALL
 344 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
 345 
 346 /*
 347  * Find a class from a given class loader.  Throws ClassNotFoundException.
 348  *  name:   name of class
 349  *  init:   whether initialization is done
 350  *  loader: class loader to look up the class. This may not be the same as the caller's
 351  *          class loader.
 352  *  caller: initiating class. The initiating class may be null when a security
 353  *          manager is not installed.
 354  */
 355 JNIEXPORT jclass JNICALL
 356 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
 357                         jobject loader, jclass caller);
 358 
 359 /*
 360  * Find a class from a given class.
 361  */
 362 JNIEXPORT jclass JNICALL
 363 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
 364                              jclass from);
 365 
 366 /* Find a loaded class cached by the VM */
 367 JNIEXPORT jclass JNICALL
 368 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
 369 
 370 /* Define a class */
 371 JNIEXPORT jclass JNICALL
 372 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
 373                 jsize len, jobject pd);
 374 
 375 /* Define a class with a source (added in JDK1.5) */
 376 JNIEXPORT jclass JNICALL
 377 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
 378                           const jbyte *buf, jsize len, jobject pd,
 379                           const char *source);
 380 
 381 /* Define a class with a source with conditional verification (added HSX 14)
 382  * -Xverify:all will verify anyway, -Xverify:none will not verify,
 383  * -Xverify:remote (default) will obey this conditional
 384  * i.e. true = should_verify_class
 385  */
 386 JNIEXPORT jclass JNICALL
 387 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name,
 388                               jobject loader, const jbyte *buf,
 389                               jsize len, jobject pd, const char *source,
 390                               jboolean verify);
 391 
 392 /*
 393  * Reflection support functions
 394  */
 395 
 396 JNIEXPORT jstring JNICALL
 397 JVM_GetClassName(JNIEnv *env, jclass cls);
 398 
 399 JNIEXPORT jobjectArray JNICALL
 400 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
 401 
 402 JNIEXPORT jboolean JNICALL
 403 JVM_IsInterface(JNIEnv *env, jclass cls);
 404 
 405 JNIEXPORT jobjectArray JNICALL
 406 JVM_GetClassSigners(JNIEnv *env, jclass cls);
 407 
 408 JNIEXPORT void JNICALL
 409 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
 410 
 411 JNIEXPORT jobject JNICALL
 412 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
 413 
 414 JNIEXPORT jboolean JNICALL
 415 JVM_IsArrayClass(JNIEnv *env, jclass cls);
 416 
 417 JNIEXPORT jboolean JNICALL
 418 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
 419 
 420 JNIEXPORT jint JNICALL
 421 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
 422 
 423 JNIEXPORT jobjectArray JNICALL
 424 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
 425 
 426 JNIEXPORT jclass JNICALL
 427 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
 428 
 429 /* Generics support (JDK 1.5) */
 430 JNIEXPORT jstring JNICALL
 431 JVM_GetClassSignature(JNIEnv *env, jclass cls);
 432 
 433 /* Annotations support (JDK 1.5) */
 434 JNIEXPORT jbyteArray JNICALL
 435 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
 436 
 437 /* Annotations support (JDK 1.6) */
 438 
 439 /* Type use annotations support (JDK 1.8) */
 440 
 441 JNIEXPORT jbyteArray JNICALL
 442 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
 443 
 444 // field is a handle to a java.lang.reflect.Field object
 445 JNIEXPORT jbyteArray JNICALL
 446 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
 447 
 448 // method is a handle to a java.lang.reflect.Method object
 449 JNIEXPORT jbyteArray JNICALL
 450 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
 451 
 452 /*
 453  * New (JDK 1.4) reflection implementation
 454  */
 455 
 456 JNIEXPORT jobjectArray JNICALL
 457 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 458 
 459 JNIEXPORT jobjectArray JNICALL
 460 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 461 
 462 JNIEXPORT jobjectArray JNICALL
 463 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 464 
 465 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
 466    This returns the access flags for the class as specified in the
 467    class file rather than searching the InnerClasses attribute (if
 468    present) to find the source-level access flags. Only the values of
 469    the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
 470    valid. */
 471 JNIEXPORT jint JNICALL
 472 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
 473 
 474 /*
 475  * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
 476  */
 477 
 478 JNIEXPORT jobject JNICALL
 479 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
 480 
 481 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
 482 (JNIEnv *env, jobject obj, jobject unused);
 483 
 484 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
 485 (JNIEnv *env, jobject obj, jobject unused, jint index);
 486 
 487 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
 488 (JNIEnv *env, jobject obj, jobject unused, jint index);
 489 
 490 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
 491 (JNIEnv *env, jobject obj, jobject unused, jint index);
 492 
 493 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
 494 (JNIEnv *env, jobject obj, jobject unused, jint index);
 495 
 496 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
 497 (JNIEnv *env, jobject obj, jobject unused, jint index);
 498 
 499 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
 500 (JNIEnv *env, jobject obj, jobject unused, jint index);
 501 
 502 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
 503 (JNIEnv *env, jobject obj, jobject unused, jint index);
 504 
 505 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
 506 (JNIEnv *env, jobject obj, jobject unused, jint index);
 507 
 508 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
 509 (JNIEnv *env, jobject obj, jobject unused, jint index);
 510 
 511 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
 512 (JNIEnv *env, jobject obj, jobject unused, jint index);
 513 
 514 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
 515 (JNIEnv *env, jobject obj, jobject unused, jint index);
 516 
 517 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
 518 (JNIEnv *env, jobject obj, jobject unused, jint index);
 519 
 520 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
 521 (JNIEnv *env, jobject obj, jobject unused, jint index);
 522 
 523 /*
 524  * java.security.*
 525  */
 526 
 527 JNIEXPORT jobject JNICALL
 528 JVM_DoPrivileged(JNIEnv *env, jclass cls,
 529                  jobject action, jobject context, jboolean wrapException);
 530 
 531 JNIEXPORT jobject JNICALL
 532 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
 533 
 534 JNIEXPORT jobject JNICALL
 535 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
 536 
 537 /*
 538  * Signal support, used to implement the shutdown sequence.  Every VM must
 539  * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
 540  * (^C) and the latter for external termination (kill, system shutdown, etc.).
 541  * Other platform-dependent signal values may also be supported.
 542  */
 543 
 544 JNIEXPORT void * JNICALL
 545 JVM_RegisterSignal(jint sig, void *handler);
 546 
 547 JNIEXPORT jboolean JNICALL
 548 JVM_RaiseSignal(jint sig);
 549 
 550 JNIEXPORT jint JNICALL
 551 JVM_FindSignal(const char *name);
 552 
 553 /*
 554  * Retrieve the assertion directives for the specified class.
 555  */
 556 JNIEXPORT jboolean JNICALL
 557 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
 558 
 559 /*
 560  * Retrieve the assertion directives from the VM.
 561  */
 562 JNIEXPORT jobject JNICALL
 563 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
 564 
 565 /*
 566  * java.util.concurrent.atomic.AtomicLong
 567  */
 568 JNIEXPORT jboolean JNICALL
 569 JVM_SupportsCX8(void);
 570 
 571 /*************************************************************************
 572  PART 2: Support for the Verifier and Class File Format Checker
 573  ************************************************************************/
 574 /*
 575  * Return the class name in UTF format. The result is valid
 576  * until JVM_ReleaseUTf is called.
 577  *
 578  * The caller must treat the string as a constant and not modify it
 579  * in any way.
 580  */
 581 JNIEXPORT const char * JNICALL
 582 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
 583 
 584 /*
 585  * Returns the constant pool types in the buffer provided by "types."
 586  */
 587 JNIEXPORT void JNICALL
 588 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
 589 
 590 /*
 591  * Returns the number of Constant Pool entries.
 592  */
 593 JNIEXPORT jint JNICALL
 594 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
 595 
 596 /*
 597  * Returns the number of *declared* fields or methods.
 598  */
 599 JNIEXPORT jint JNICALL
 600 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
 601 
 602 JNIEXPORT jint JNICALL
 603 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
 604 
 605 /*
 606  * Returns the CP indexes of exceptions raised by a given method.
 607  * Places the result in the given buffer.
 608  *
 609  * The method is identified by method_index.
 610  */
 611 JNIEXPORT void JNICALL
 612 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
 613                                 unsigned short *exceptions);
 614 /*
 615  * Returns the number of exceptions raised by a given method.
 616  * The method is identified by method_index.
 617  */
 618 JNIEXPORT jint JNICALL
 619 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
 620 
 621 /*
 622  * Returns the byte code sequence of a given method.
 623  * Places the result in the given buffer.
 624  *
 625  * The method is identified by method_index.
 626  */
 627 JNIEXPORT void JNICALL
 628 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
 629                         unsigned char *code);
 630 
 631 /*
 632  * Returns the length of the byte code sequence of a given method.
 633  * The method is identified by method_index.
 634  */
 635 JNIEXPORT jint JNICALL
 636 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
 637 
 638 /*
 639  * A structure used to a capture exception table entry in a Java method.
 640  */
 641 typedef struct {
 642     jint start_pc;
 643     jint end_pc;
 644     jint handler_pc;
 645     jint catchType;
 646 } JVM_ExceptionTableEntryType;
 647 
 648 /*
 649  * Returns the exception table entry at entry_index of a given method.
 650  * Places the result in the given buffer.
 651  *
 652  * The method is identified by method_index.
 653  */
 654 JNIEXPORT void JNICALL
 655 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
 656                                    jint entry_index,
 657                                    JVM_ExceptionTableEntryType *entry);
 658 
 659 /*
 660  * Returns the length of the exception table of a given method.
 661  * The method is identified by method_index.
 662  */
 663 JNIEXPORT jint JNICALL
 664 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
 665 
 666 /*
 667  * Returns the modifiers of a given field.
 668  * The field is identified by field_index.
 669  */
 670 JNIEXPORT jint JNICALL
 671 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
 672 
 673 /*
 674  * Returns the modifiers of a given method.
 675  * The method is identified by method_index.
 676  */
 677 JNIEXPORT jint JNICALL
 678 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
 679 
 680 /*
 681  * Returns the number of local variables of a given method.
 682  * The method is identified by method_index.
 683  */
 684 JNIEXPORT jint JNICALL
 685 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
 686 
 687 /*
 688  * Returns the number of arguments (including this pointer) of a given method.
 689  * The method is identified by method_index.
 690  */
 691 JNIEXPORT jint JNICALL
 692 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
 693 
 694 /*
 695  * Returns the maximum amount of stack (in words) used by a given method.
 696  * The method is identified by method_index.
 697  */
 698 JNIEXPORT jint JNICALL
 699 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
 700 
 701 /*
 702  * Is a given method a constructor.
 703  * The method is identified by method_index.
 704  */
 705 JNIEXPORT jboolean JNICALL
 706 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
 707 
 708 /*
 709  * Is the given method generated by the VM.
 710  * The method is identified by method_index.
 711  */
 712 JNIEXPORT jboolean JNICALL
 713 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
 714 
 715 /*
 716  * Returns the name of a given method in UTF format.
 717  * The result remains valid until JVM_ReleaseUTF is called.
 718  *
 719  * The caller must treat the string as a constant and not modify it
 720  * in any way.
 721  */
 722 JNIEXPORT const char * JNICALL
 723 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
 724 
 725 /*
 726  * Returns the signature of a given method in UTF format.
 727  * The result remains valid until JVM_ReleaseUTF is called.
 728  *
 729  * The caller must treat the string as a constant and not modify it
 730  * in any way.
 731  */
 732 JNIEXPORT const char * JNICALL
 733 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
 734 
 735 /*
 736  * Returns the name of the field refered to at a given constant pool
 737  * index.
 738  *
 739  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 740  * is called.
 741  *
 742  * The caller must treat the string as a constant and not modify it
 743  * in any way.
 744  */
 745 JNIEXPORT const char * JNICALL
 746 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
 747 
 748 /*
 749  * Returns the name of the method refered to at a given constant pool
 750  * index.
 751  *
 752  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 753  * is called.
 754  *
 755  * The caller must treat the string as a constant and not modify it
 756  * in any way.
 757  */
 758 JNIEXPORT const char * JNICALL
 759 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
 760 
 761 /*
 762  * Returns the signature of the method refered to at a given constant pool
 763  * index.
 764  *
 765  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 766  * is called.
 767  *
 768  * The caller must treat the string as a constant and not modify it
 769  * in any way.
 770  */
 771 JNIEXPORT const char * JNICALL
 772 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
 773 
 774 /*
 775  * Returns the signature of the field refered to at a given constant pool
 776  * index.
 777  *
 778  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 779  * is called.
 780  *
 781  * The caller must treat the string as a constant and not modify it
 782  * in any way.
 783  */
 784 JNIEXPORT const char * JNICALL
 785 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
 786 
 787 /*
 788  * Returns the class name refered to at a given constant pool index.
 789  *
 790  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 791  * is called.
 792  *
 793  * The caller must treat the string as a constant and not modify it
 794  * in any way.
 795  */
 796 JNIEXPORT const char * JNICALL
 797 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
 798 
 799 /*
 800  * Returns the class name refered to at a given constant pool index.
 801  *
 802  * The constant pool entry must refer to a CONSTANT_Fieldref.
 803  *
 804  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 805  * is called.
 806  *
 807  * The caller must treat the string as a constant and not modify it
 808  * in any way.
 809  */
 810 JNIEXPORT const char * JNICALL
 811 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
 812 
 813 /*
 814  * Returns the class name refered to at a given constant pool index.
 815  *
 816  * The constant pool entry must refer to CONSTANT_Methodref or
 817  * CONSTANT_InterfaceMethodref.
 818  *
 819  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 820  * is called.
 821  *
 822  * The caller must treat the string as a constant and not modify it
 823  * in any way.
 824  */
 825 JNIEXPORT const char * JNICALL
 826 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
 827 
 828 /*
 829  * Returns the modifiers of a field in calledClass. The field is
 830  * referred to in class cb at constant pool entry index.
 831  *
 832  * The caller must treat the string as a constant and not modify it
 833  * in any way.
 834  *
 835  * Returns -1 if the field does not exist in calledClass.
 836  */
 837 JNIEXPORT jint JNICALL
 838 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
 839 
 840 /*
 841  * Returns the modifiers of a method in calledClass. The method is
 842  * referred to in class cb at constant pool entry index.
 843  *
 844  * Returns -1 if the method does not exist in calledClass.
 845  */
 846 JNIEXPORT jint JNICALL
 847 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
 848 
 849 /*
 850  * Releases the UTF string obtained from the VM.
 851  */
 852 JNIEXPORT void JNICALL
 853 JVM_ReleaseUTF(const char *utf);
 854 
 855 /*
 856  * Compare if two classes are in the same package.
 857  */
 858 JNIEXPORT jboolean JNICALL
 859 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
 860 
 861 /* Constants in class files */
 862 
 863 #define JVM_ACC_PUBLIC        0x0001  /* visible to everyone */
 864 #define JVM_ACC_PRIVATE       0x0002  /* visible only to the defining class */
 865 #define JVM_ACC_PROTECTED     0x0004  /* visible to subclasses */
 866 #define JVM_ACC_STATIC        0x0008  /* instance variable is static */
 867 #define JVM_ACC_FINAL         0x0010  /* no further subclassing, overriding */
 868 #define JVM_ACC_SYNCHRONIZED  0x0020  /* wrap method call in monitor lock */
 869 #define JVM_ACC_SUPER         0x0020  /* funky handling of invokespecial */
 870 #define JVM_ACC_VOLATILE      0x0040  /* can not cache in registers */
 871 #define JVM_ACC_BRIDGE        0x0040  /* bridge method generated by compiler */
 872 #define JVM_ACC_TRANSIENT     0x0080  /* not persistent */
 873 #define JVM_ACC_VARARGS       0x0080  /* method declared with variable number of args */
 874 #define JVM_ACC_NATIVE        0x0100  /* implemented in C */
 875 #define JVM_ACC_INTERFACE     0x0200  /* class is an interface */
 876 #define JVM_ACC_ABSTRACT      0x0400  /* no definition provided */
 877 #define JVM_ACC_STRICT        0x0800  /* strict floating point */
 878 #define JVM_ACC_SYNTHETIC     0x1000  /* compiler-generated class, method or field */
 879 #define JVM_ACC_ANNOTATION    0x2000  /* annotation type */
 880 #define JVM_ACC_ENUM          0x4000  /* field is declared as element of enum */
 881 
 882 #define JVM_ACC_PUBLIC_BIT        0
 883 #define JVM_ACC_PRIVATE_BIT       1
 884 #define JVM_ACC_PROTECTED_BIT     2
 885 #define JVM_ACC_STATIC_BIT        3
 886 #define JVM_ACC_FINAL_BIT         4
 887 #define JVM_ACC_SYNCHRONIZED_BIT  5
 888 #define JVM_ACC_SUPER_BIT         5
 889 #define JVM_ACC_VOLATILE_BIT      6
 890 #define JVM_ACC_BRIDGE_BIT        6
 891 #define JVM_ACC_TRANSIENT_BIT     7
 892 #define JVM_ACC_VARARGS_BIT       7
 893 #define JVM_ACC_NATIVE_BIT        8
 894 #define JVM_ACC_INTERFACE_BIT     9
 895 #define JVM_ACC_ABSTRACT_BIT      10
 896 #define JVM_ACC_STRICT_BIT        11
 897 #define JVM_ACC_SYNTHETIC_BIT     12
 898 #define JVM_ACC_ANNOTATION_BIT    13
 899 #define JVM_ACC_ENUM_BIT          14
 900 
 901 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
 902 enum {
 903     JVM_CONSTANT_Utf8 = 1,
 904     JVM_CONSTANT_Unicode,               /* unused */
 905     JVM_CONSTANT_Integer,
 906     JVM_CONSTANT_Float,
 907     JVM_CONSTANT_Long,
 908     JVM_CONSTANT_Double,
 909     JVM_CONSTANT_Class,
 910     JVM_CONSTANT_String,
 911     JVM_CONSTANT_Fieldref,
 912     JVM_CONSTANT_Methodref,
 913     JVM_CONSTANT_InterfaceMethodref,
 914     JVM_CONSTANT_NameAndType,
 915     JVM_CONSTANT_MethodHandle           = 15,  // JSR 292
 916     JVM_CONSTANT_MethodType             = 16,  // JSR 292
 917     //JVM_CONSTANT_(unused)             = 17,  // JSR 292 early drafts only
 918     JVM_CONSTANT_InvokeDynamic          = 18,  // JSR 292
 919     JVM_CONSTANT_ExternalMax            = 18   // Last tag found in classfiles
 920 };
 921 
 922 /* JVM_CONSTANT_MethodHandle subtypes */
 923 enum {
 924     JVM_REF_getField                = 1,
 925     JVM_REF_getStatic               = 2,
 926     JVM_REF_putField                = 3,
 927     JVM_REF_putStatic               = 4,
 928     JVM_REF_invokeVirtual           = 5,
 929     JVM_REF_invokeStatic            = 6,
 930     JVM_REF_invokeSpecial           = 7,
 931     JVM_REF_newInvokeSpecial        = 8,
 932     JVM_REF_invokeInterface         = 9
 933 };
 934 
 935 /* Used in the newarray instruction. */
 936 
 937 #define JVM_T_BOOLEAN 4
 938 #define JVM_T_CHAR    5
 939 #define JVM_T_FLOAT   6
 940 #define JVM_T_DOUBLE  7
 941 #define JVM_T_BYTE    8
 942 #define JVM_T_SHORT   9
 943 #define JVM_T_INT    10
 944 #define JVM_T_LONG   11
 945 
 946 /* JVM method signatures */
 947 
 948 #define JVM_SIGNATURE_ARRAY             '['
 949 #define JVM_SIGNATURE_BYTE              'B'
 950 #define JVM_SIGNATURE_CHAR              'C'
 951 #define JVM_SIGNATURE_CLASS             'L'
 952 #define JVM_SIGNATURE_ENDCLASS          ';'
 953 #define JVM_SIGNATURE_ENUM              'E'
 954 #define JVM_SIGNATURE_FLOAT             'F'
 955 #define JVM_SIGNATURE_DOUBLE            'D'
 956 #define JVM_SIGNATURE_FUNC              '('
 957 #define JVM_SIGNATURE_ENDFUNC           ')'
 958 #define JVM_SIGNATURE_INT               'I'
 959 #define JVM_SIGNATURE_LONG              'J'
 960 #define JVM_SIGNATURE_SHORT             'S'
 961 #define JVM_SIGNATURE_VOID              'V'
 962 #define JVM_SIGNATURE_BOOLEAN           'Z'
 963 
 964 /*
 965  * A function defined by the byte-code verifier and called by the VM.
 966  * This is not a function implemented in the VM.
 967  *
 968  * Returns JNI_FALSE if verification fails. A detailed error message
 969  * will be places in msg_buf, whose length is specified by buf_len.
 970  */
 971 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
 972                                   jclass cb,
 973                                   char * msg_buf,
 974                                   jint buf_len);
 975 
 976 
 977 /*
 978  * Support for a VM-independent class format checker.
 979  */
 980 typedef struct {
 981     unsigned long code;    /* byte code */
 982     unsigned long excs;    /* exceptions */
 983     unsigned long etab;    /* catch table */
 984     unsigned long lnum;    /* line number */
 985     unsigned long lvar;    /* local vars */
 986 } method_size_info;
 987 
 988 typedef struct {
 989     unsigned int constants;    /* constant pool */
 990     unsigned int fields;
 991     unsigned int methods;
 992     unsigned int interfaces;
 993     unsigned int fields2;      /* number of static 2-word fields */
 994     unsigned int innerclasses; /* # of records in InnerClasses attr */
 995 
 996     method_size_info clinit;   /* memory used in clinit */
 997     method_size_info main;     /* used everywhere else */
 998 } class_size_info;
 999 
1000 /*
1001  * Functions defined in libjava.so to perform string conversions.
1002  *
1003  */
1004 
1005 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1006 
1007 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1008 
1009 /* This is the function defined in libjava.so that performs class
1010  * format checks. This functions fills in size information about
1011  * the class file and returns:
1012  *
1013  *   0: good
1014  *  -1: out of memory
1015  *  -2: bad format
1016  *  -3: unsupported version
1017  *  -4: bad class name
1018  */
1019 
1020 typedef jint (*check_format_fn_t)(char *class_name,
1021                                   unsigned char *data,
1022                                   unsigned int data_size,
1023                                   class_size_info *class_size,
1024                                   char *message_buffer,
1025                                   jint buffer_length,
1026                                   jboolean measure_only,
1027                                   jboolean check_relaxed);
1028 
1029 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1030                                         JVM_ACC_FINAL | \
1031                                         JVM_ACC_SUPER | \
1032                                         JVM_ACC_INTERFACE | \
1033                                         JVM_ACC_ABSTRACT | \
1034                                         JVM_ACC_ANNOTATION | \
1035                                         JVM_ACC_ENUM | \
1036                                         JVM_ACC_SYNTHETIC)
1037 
1038 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1039                                         JVM_ACC_PRIVATE | \
1040                                         JVM_ACC_PROTECTED | \
1041                                         JVM_ACC_STATIC | \
1042                                         JVM_ACC_FINAL | \
1043                                         JVM_ACC_VOLATILE | \
1044                                         JVM_ACC_TRANSIENT | \
1045                                         JVM_ACC_ENUM | \
1046                                         JVM_ACC_SYNTHETIC)
1047 
1048 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1049                                          JVM_ACC_PRIVATE | \
1050                                          JVM_ACC_PROTECTED | \
1051                                          JVM_ACC_STATIC | \
1052                                          JVM_ACC_FINAL | \
1053                                          JVM_ACC_SYNCHRONIZED | \
1054                                          JVM_ACC_BRIDGE | \
1055                                          JVM_ACC_VARARGS | \
1056                                          JVM_ACC_NATIVE | \
1057                                          JVM_ACC_ABSTRACT | \
1058                                          JVM_ACC_STRICT | \
1059                                          JVM_ACC_SYNTHETIC)
1060 
1061 /*
1062  * This is the function defined in libjava.so to perform path
1063  * canonicalization. VM call this function before opening jar files
1064  * to load system classes.
1065  *
1066  */
1067 
1068 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1069 
1070 /*************************************************************************
1071  PART 3: I/O and Network Support
1072  ************************************************************************/
1073 
1074 /*
1075  * Convert a pathname into native format.  This function does syntactic
1076  * cleanup, such as removing redundant separator characters.  It modifies
1077  * the given pathname string in place.
1078  */
1079 JNIEXPORT char * JNICALL
1080 JVM_NativePath(char *);
1081 
1082 /*
1083  * The standard printing functions supported by the Java VM. (Should they
1084  * be renamed to JVM_* in the future?
1085  */
1086 
1087 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1088  *  respectively, with the following differences:
1089  * - The string written to str is always zero-terminated, also in case of
1090  *   truncation (count is too small to hold the result string), unless count
1091  *   is 0. In case of truncation count-1 characters are written and '\0'
1092  *   appendend.
1093  * - If count is too small to hold the whole string, -1 is returned across
1094  *   all platforms. */
1095 JNIEXPORT int
1096 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1097 
1098 JNIEXPORT int
1099 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1100 
1101 JNIEXPORT int
1102 jio_fprintf(FILE *, const char *fmt, ...);
1103 
1104 JNIEXPORT int
1105 jio_vfprintf(FILE *, const char *fmt, va_list args);
1106 
1107 
1108 JNIEXPORT void * JNICALL
1109 JVM_RawMonitorCreate(void);
1110 
1111 JNIEXPORT void JNICALL
1112 JVM_RawMonitorDestroy(void *mon);
1113 
1114 JNIEXPORT jint JNICALL
1115 JVM_RawMonitorEnter(void *mon);
1116 
1117 JNIEXPORT void JNICALL
1118 JVM_RawMonitorExit(void *mon);
1119 
1120 /*
1121  * java.lang.reflect.Method
1122  */
1123 JNIEXPORT jobject JNICALL
1124 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1125 
1126 /*
1127  * java.lang.reflect.Constructor
1128  */
1129 JNIEXPORT jobject JNICALL
1130 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1131 
1132 /*
1133  * java.lang.management support
1134  */
1135 JNIEXPORT void* JNICALL
1136 JVM_GetManagement(jint version);
1137 
1138 /*
1139  * com.sun.tools.attach.VirtualMachine support
1140  *
1141  * Initialize the agent properties with the properties maintained in the VM.
1142  */
1143 JNIEXPORT jobject JNICALL
1144 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1145 
1146 JNIEXPORT jstring JNICALL
1147 JVM_GetTemporaryDirectory(JNIEnv *env);
1148 
1149 /* Generics reflection support.
1150  *
1151  * Returns information about the given class's EnclosingMethod
1152  * attribute, if present, or null if the class had no enclosing
1153  * method.
1154  *
1155  * If non-null, the returned array contains three elements. Element 0
1156  * is the java.lang.Class of which the enclosing method is a member,
1157  * and elements 1 and 2 are the java.lang.Strings for the enclosing
1158  * method's name and descriptor, respectively.
1159  */
1160 JNIEXPORT jobjectArray JNICALL
1161 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1162 
1163 /* =========================================================================
1164  * The following defines a private JVM interface that the JDK can query
1165  * for the JVM version and capabilities.  sun.misc.Version defines
1166  * the methods for getting the VM version and its capabilities.
1167  *
1168  * When a new bit is added, the following should be updated to provide
1169  * access to the new capability:
1170  *    HS:   JVM_GetVersionInfo and Abstract_VM_Version class
1171  *    SDK:  Version class
1172  *
1173  * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1174  * JVM to query for the JDK version and capabilities.
1175  *
1176  * When a new bit is added, the following should be updated to provide
1177  * access to the new capability:
1178  *    HS:   JDK_Version class
1179  *    SDK:  JDK_GetVersionInfo0
1180  *
1181  * ==========================================================================
1182  */
1183 typedef struct {
1184     /* VM version string: follows the JDK release version naming convention    */
1185     unsigned int jvm_version; /* <major_ver>.<minor_ver>.<micro_ver>[-<identifier>][-<debug_target>][-b<nn>]  */
1186     unsigned int update_version : 8;
1187     unsigned int special_update_version : 8;
1188     unsigned int reserved1 : 16;
1189     unsigned int reserved2;
1190 
1191     /* The following bits represents JVM supports that JDK has dependency on.
1192      * JDK can use these bits to determine which JVM version
1193      * and support it has to maintain runtime compatibility.
1194      *
1195      * When a new bit is added in a minor or update release, make sure
1196      * the new bit is also added in the main/baseline.
1197      */
1198     unsigned int is_attachable : 1;
1199     unsigned int : 31;
1200     unsigned int : 32;
1201     unsigned int : 32;
1202 } jvm_version_info;
1203 
1204 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1205 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1206 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1207 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1208 
1209 JNIEXPORT void JNICALL
1210 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1211 
1212 typedef struct {
1213     // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
1214     unsigned int jdk_version;   /* Consists of major, minor, micro (n.n.n) */
1215                                 /* and build number (xx) */
1216     unsigned int update_version : 8;         /* Update release version (uu) */
1217     unsigned int special_update_version : 8; /* Special update release version (c)*/
1218     unsigned int reserved1 : 16;
1219     unsigned int reserved2;
1220 
1221     /* The following bits represents new JDK supports that VM has dependency on.
1222      * VM implementation can use these bits to determine which JDK version
1223      * and support it has to maintain runtime compatibility.
1224      *
1225      * When a new bit is added in a minor or update release, make sure
1226      * the new bit is also added in the main/baseline.
1227      */
1228     unsigned int thread_park_blocker : 1;
1229     unsigned int post_vm_init_hook_enabled : 1;
1230     unsigned int pending_list_uses_discovered_field : 1;
1231     unsigned int : 29;
1232     unsigned int : 32;
1233     unsigned int : 32;
1234 } jdk_version_info;
1235 
1236 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1237 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1238 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1239 
1240 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
1241  * It will be zero for internal builds.
1242  */
1243 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1244 
1245 /*
1246  * This is the function JDK_GetVersionInfo0 defined in libjava.so
1247  * that is dynamically looked up by JVM.
1248  */
1249 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1250 
1251 /*
1252  * This structure is used by the launcher to get the default thread
1253  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1254  * version of 1.1.  As it is not supported otherwise, it has been removed
1255  * from jni.h
1256  */
1257 typedef struct JDK1_1InitArgs {
1258     jint version;
1259 
1260     char **properties;
1261     jint checkSource;
1262     jint nativeStackSize;
1263     jint javaStackSize;
1264     jint minHeapSize;
1265     jint maxHeapSize;
1266     jint verifyMode;
1267     char *classpath;
1268 
1269     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1270     void (JNICALL *exit)(jint code);
1271     void (JNICALL *abort)(void);
1272 
1273     jint enableClassGC;
1274     jint enableVerboseGC;
1275     jint disableAsyncGC;
1276     jint verbose;
1277     jboolean debugging;
1278     jint debugPort;
1279 } JDK1_1InitArgs;
1280 
1281 #ifdef __cplusplus
1282 } /* extern "C" */
1283 #endif /* __cplusplus */
1284 
1285 #endif /* !_JAVASOFT_JVM_H_ */
1286 
1287 #endif // SHARE_VM_PRIMS_JVM_H