1 /*
   2  * Copyright (c) 1997, 2020, 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 6
  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 /*
 115  * Return an array of all properties as alternating name and value pairs.
 116  */
 117 JNIEXPORT jobjectArray JNICALL
 118 JVM_GetProperties(JNIEnv *env);
 119 
 120 /*
 121  * java.lang.Runtime
 122  */
 123 JNIEXPORT void JNICALL
 124 JVM_BeforeHalt();
 125 
 126 JNIEXPORT void JNICALL
 127 JVM_Halt(jint code);
 128 
 129 JNIEXPORT void JNICALL
 130 JVM_GC(void);
 131 
 132 /* Returns the number of real-time milliseconds that have elapsed since the
 133  * least-recently-inspected heap object was last inspected by the garbage
 134  * collector.
 135  *
 136  * For simple stop-the-world collectors this value is just the time
 137  * since the most recent collection.  For generational collectors it is the
 138  * time since the oldest generation was most recently collected.  Other
 139  * collectors are free to return a pessimistic estimate of the elapsed time, or
 140  * simply the time since the last full collection was performed.
 141  *
 142  * Note that in the presence of reference objects, a given object that is no
 143  * longer strongly reachable may have to be inspected multiple times before it
 144  * can be reclaimed.
 145  */
 146 JNIEXPORT jlong JNICALL
 147 JVM_MaxObjectInspectionAge(void);
 148 
 149 JNIEXPORT jlong JNICALL
 150 JVM_TotalMemory(void);
 151 
 152 JNIEXPORT jlong JNICALL
 153 JVM_FreeMemory(void);
 154 
 155 JNIEXPORT jlong JNICALL
 156 JVM_MaxMemory(void);
 157 
 158 JNIEXPORT jint JNICALL
 159 JVM_ActiveProcessorCount(void);
 160 
 161 JNIEXPORT void * JNICALL
 162 JVM_LoadLibrary(const char *name);
 163 
 164 JNIEXPORT void JNICALL
 165 JVM_UnloadLibrary(void * handle);
 166 
 167 JNIEXPORT void * JNICALL
 168 JVM_FindLibraryEntry(void *handle, const char *name);
 169 
 170 JNIEXPORT jboolean JNICALL
 171 JVM_IsSupportedJNIVersion(jint version);
 172 
 173 JNIEXPORT jobjectArray JNICALL
 174 JVM_GetVmArguments(JNIEnv *env);
 175 
 176 JNIEXPORT void JNICALL
 177 JVM_InitializeFromArchive(JNIEnv* env, jclass cls);
 178 
 179 /*
 180  * java.lang.Throwable
 181  */
 182 JNIEXPORT void JNICALL
 183 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
 184 
 185 /*
 186  * java.lang.StackTraceElement
 187  */
 188 JNIEXPORT void JNICALL
 189 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
 190 
 191 JNIEXPORT void JNICALL
 192 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
 193 
 194 /*
 195  * java.lang.NullPointerException
 196  */
 197 
 198 JNIEXPORT jstring JNICALL
 199 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
 200 
 201 /*
 202  * java.lang.StackWalker
 203  */
 204 enum {
 205   JVM_STACKWALK_FILL_CLASS_REFS_ONLY       = 0x2,
 206   JVM_STACKWALK_GET_CALLER_CLASS           = 0x04,
 207   JVM_STACKWALK_SHOW_HIDDEN_FRAMES         = 0x20,
 208   JVM_STACKWALK_FILL_LIVE_STACK_FRAMES     = 0x100
 209 };
 210 
 211 JNIEXPORT jobject JNICALL
 212 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
 213                   jint skip_frames, jint frame_count, jint start_index,
 214                   jobjectArray frames);
 215 
 216 JNIEXPORT jint JNICALL
 217 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
 218                   jint frame_count, jint start_index,
 219                   jobjectArray frames);
 220 
 221 /*
 222  * java.lang.Thread
 223  */
 224 JNIEXPORT void JNICALL
 225 JVM_StartThread(JNIEnv *env, jobject thread);
 226 
 227 JNIEXPORT void JNICALL
 228 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
 229 
 230 JNIEXPORT jboolean JNICALL
 231 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
 232 
 233 JNIEXPORT void JNICALL
 234 JVM_SuspendThread(JNIEnv *env, jobject thread);
 235 
 236 JNIEXPORT void JNICALL
 237 JVM_ResumeThread(JNIEnv *env, jobject thread);
 238 
 239 JNIEXPORT void JNICALL
 240 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
 241 
 242 JNIEXPORT void JNICALL
 243 JVM_Yield(JNIEnv *env, jclass threadClass);
 244 
 245 JNIEXPORT void JNICALL
 246 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
 247 
 248 JNIEXPORT jobject JNICALL
 249 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
 250 
 251 JNIEXPORT void JNICALL
 252 JVM_Interrupt(JNIEnv *env, jobject thread);
 253 
 254 JNIEXPORT jboolean JNICALL
 255 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
 256 
 257 JNIEXPORT void JNICALL
 258 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
 259 
 260 JNIEXPORT jobjectArray JNICALL
 261 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
 262 
 263 JNIEXPORT void JNICALL
 264 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
 265 
 266 /* getStackTrace() and getAllStackTraces() method */
 267 JNIEXPORT jobjectArray JNICALL
 268 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
 269 
 270 /*
 271  * java.lang.SecurityManager
 272  */
 273 JNIEXPORT jobjectArray JNICALL
 274 JVM_GetClassContext(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.lang.ref.Reference
 287  */
 288 JNIEXPORT jobject JNICALL
 289 JVM_GetAndClearReferencePendingList(JNIEnv *env);
 290 
 291 JNIEXPORT jboolean JNICALL
 292 JVM_HasReferencePendingList(JNIEnv *env);
 293 
 294 JNIEXPORT void JNICALL
 295 JVM_WaitForReferencePendingList(JNIEnv *env);
 296 
 297 /*
 298  * java.io.ObjectInputStream
 299  */
 300 JNIEXPORT jobject JNICALL
 301 JVM_LatestUserDefinedLoader(JNIEnv *env);
 302 
 303 /*
 304  * java.lang.reflect.Array
 305  */
 306 JNIEXPORT jint JNICALL
 307 JVM_GetArrayLength(JNIEnv *env, jobject arr);
 308 
 309 JNIEXPORT jobject JNICALL
 310 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
 311 
 312 JNIEXPORT jvalue JNICALL
 313 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
 314 
 315 JNIEXPORT void JNICALL
 316 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
 317 
 318 JNIEXPORT void JNICALL
 319 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
 320                              unsigned char vCode);
 321 
 322 JNIEXPORT jobject JNICALL
 323 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
 324 
 325 JNIEXPORT jobject JNICALL
 326 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
 327 
 328 
 329 /*
 330  * Returns the immediate caller class of the native method invoking
 331  * JVM_GetCallerClass.  The Method.invoke and other frames due to
 332  * reflection machinery are skipped.
 333  *
 334  * The caller is expected to be marked with
 335  * jdk.internal.reflect.CallerSensitive. The JVM will throw an
 336  * error if it is not marked properly.
 337  */
 338 JNIEXPORT jclass JNICALL
 339 JVM_GetCallerClass(JNIEnv *env);
 340 
 341 
 342 /*
 343  * Find primitive classes
 344  * utf: class name
 345  */
 346 JNIEXPORT jclass JNICALL
 347 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
 348 
 349 
 350 /*
 351  * Find a class from a boot class loader. Returns NULL if class not found.
 352  */
 353 JNIEXPORT jclass JNICALL
 354 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
 355 
 356 /*
 357  * Find a class from a given class loader.  Throws ClassNotFoundException.
 358  *  name:   name of class
 359  *  init:   whether initialization is done
 360  *  loader: class loader to look up the class. This may not be the same as the caller's
 361  *          class loader.
 362  *  caller: initiating class. The initiating class may be null when a security
 363  *          manager is not installed.
 364  */
 365 JNIEXPORT jclass JNICALL
 366 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
 367                         jobject loader, jclass caller);
 368 
 369 /*
 370  * Find a class from a given class.
 371  */
 372 JNIEXPORT jclass JNICALL
 373 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
 374                              jclass from);
 375 
 376 /* Find a loaded class cached by the VM */
 377 JNIEXPORT jclass JNICALL
 378 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
 379 
 380 /* Define a class */
 381 JNIEXPORT jclass JNICALL
 382 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
 383                 jsize len, jobject pd);
 384 
 385 /* Define a class with a source (added in JDK1.5) */
 386 JNIEXPORT jclass JNICALL
 387 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
 388                           const jbyte *buf, jsize len, jobject pd,
 389                           const char *source);
 390 
 391 /*
 392  * Define a class with the specified lookup class.
 393  *  lookup:  Lookup class
 394  *  name:    the name of the class
 395  *  buf:     class bytes
 396  *  len:     length of class bytes
 397  *  pd:      protection domain
 398  *  init:    initialize the class
 399  *  flags:   properties of the class
 400  *  classData: private static pre-initialized field; may be null
 401  */
 402 JNIEXPORT jclass JNICALL
 403 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
 404                       jsize len, jobject pd, jboolean init, int flags, jobject classData);
 405 
 406 /*
 407  * Module support funcions
 408  */
 409 
 410 /*
 411  * Define a module with the specified packages and bind the module to the
 412  * given class loader.
 413  *  module:       module to define
 414  *  is_open:      specifies if module is open (currently ignored)
 415  *  version:      the module version
 416  *  location:     the module location
 417  *  packages:     array of packages in the module
 418  */
 419 JNIEXPORT void JNICALL
 420 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
 421                  jstring location, jobjectArray packages);
 422 
 423 /*
 424  * Set the boot loader's unnamed module.
 425  *  module: boot loader's unnamed module
 426  */
 427 JNIEXPORT void JNICALL
 428 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
 429 
 430 /*
 431  * Do a qualified export of a package.
 432  *  from_module: module containing the package to export
 433  *  package:     name of the package to export
 434  *  to_module:   module to export the package to
 435  */
 436 JNIEXPORT void JNICALL
 437 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
 438 
 439 /*
 440  * Do an export of a package to all unnamed modules.
 441  *  from_module: module containing the package to export
 442  *  package:     name of the package to export to all unnamed modules
 443  */
 444 JNIEXPORT void JNICALL
 445 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
 446 
 447 /*
 448  * Do an unqualified export of a package.
 449  *  from_module: module containing the package to export
 450  *  package:     name of the package to export
 451  */
 452 JNIEXPORT void JNICALL
 453 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
 454 
 455 /*
 456  * Add a module to the list of modules that a given module can read.
 457  *  from_module:   module requesting read access
 458  *  source_module: module that from_module wants to read
 459  */
 460 JNIEXPORT void JNICALL
 461 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
 462 
 463 /*
 464  * Reflection support functions
 465  */
 466 
 467 JNIEXPORT jstring JNICALL
 468 JVM_InitClassName(JNIEnv *env, jclass cls);
 469 
 470 JNIEXPORT jobjectArray JNICALL
 471 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
 472 
 473 JNIEXPORT jboolean JNICALL
 474 JVM_IsInterface(JNIEnv *env, jclass cls);
 475 
 476 JNIEXPORT jobjectArray JNICALL
 477 JVM_GetClassSigners(JNIEnv *env, jclass cls);
 478 
 479 JNIEXPORT void JNICALL
 480 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
 481 
 482 JNIEXPORT jobject JNICALL
 483 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
 484 
 485 JNIEXPORT jboolean JNICALL
 486 JVM_IsArrayClass(JNIEnv *env, jclass cls);
 487 
 488 JNIEXPORT jboolean JNICALL
 489 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
 490 
 491 JNIEXPORT jboolean JNICALL
 492 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
 493 
 494 JNIEXPORT jint JNICALL
 495 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
 496 
 497 JNIEXPORT jobjectArray JNICALL
 498 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
 499 
 500 JNIEXPORT jclass JNICALL
 501 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
 502 
 503 JNIEXPORT jstring JNICALL
 504 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
 505 
 506 /* Generics support (JDK 1.5) */
 507 JNIEXPORT jstring JNICALL
 508 JVM_GetClassSignature(JNIEnv *env, jclass cls);
 509 
 510 /* Annotations support (JDK 1.5) */
 511 JNIEXPORT jbyteArray JNICALL
 512 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
 513 
 514 /* Type use annotations support (JDK 1.8) */
 515 
 516 JNIEXPORT jbyteArray JNICALL
 517 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
 518 
 519 JNIEXPORT jbyteArray JNICALL
 520 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
 521 
 522 JNIEXPORT jbyteArray JNICALL
 523 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
 524 
 525 /*
 526  * New (JDK 1.4) reflection implementation
 527  */
 528 
 529 JNIEXPORT jobjectArray JNICALL
 530 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 531 
 532 JNIEXPORT jobjectArray JNICALL
 533 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 534 
 535 JNIEXPORT jobjectArray JNICALL
 536 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
 537 
 538 
 539 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
 540    This returns the access flags for the class as specified in the
 541    class file rather than searching the InnerClasses attribute (if
 542    present) to find the source-level access flags. Only the values of
 543    the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
 544    valid. */
 545 JNIEXPORT jint JNICALL
 546 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
 547 
 548 /* Nestmates - since JDK 11 */
 549 
 550 JNIEXPORT jboolean JNICALL
 551 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
 552 
 553 JNIEXPORT jclass JNICALL
 554 JVM_GetNestHost(JNIEnv *env, jclass current);
 555 
 556 JNIEXPORT jobjectArray JNICALL
 557 JVM_GetNestMembers(JNIEnv *env, jclass current);
 558 
 559 /* Records - since JDK 14 */
 560 
 561 JNIEXPORT jboolean JNICALL
 562 JVM_IsRecord(JNIEnv *env, jclass cls);
 563 
 564 JNIEXPORT jobjectArray JNICALL
 565 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
 566 
 567 /* The following two reflection routines are still needed due to startup time issues */
 568 /*
 569  * java.lang.reflect.Method
 570  */
 571 JNIEXPORT jobject JNICALL
 572 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
 573 
 574 /*
 575  * java.lang.reflect.Constructor
 576  */
 577 JNIEXPORT jobject JNICALL
 578 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
 579 
 580 /*
 581  * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
 582  */
 583 
 584 JNIEXPORT jobject JNICALL
 585 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
 586 
 587 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
 588 (JNIEnv *env, jobject unused, jobject jcpool);
 589 
 590 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
 591 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 592 
 593 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
 594 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 595 
 596 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
 597 (JNIEnv *env, jobject obj, jobject unused, jint index);
 598 
 599 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
 600 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 601 
 602 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
 603 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 604 
 605 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
 606 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 607 
 608 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
 609 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 610 
 611 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
 612 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 613 
 614 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
 615 (JNIEnv *env, jobject obj, jobject unused, jint index);
 616 
 617 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
 618 (JNIEnv *env, jobject obj, jobject unused, jint index);
 619 
 620 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
 621 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 622 
 623 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
 624 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 625 
 626 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
 627 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 628 
 629 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
 630 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 631 
 632 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
 633 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 634 
 635 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
 636 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 637 
 638 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
 639 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
 640 
 641 /*
 642  * Parameter reflection
 643  */
 644 
 645 JNIEXPORT jobjectArray JNICALL
 646 JVM_GetMethodParameters(JNIEnv *env, jobject method);
 647 
 648 /*
 649  * java.security.*
 650  */
 651 
 652 JNIEXPORT jobject JNICALL
 653 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
 654 
 655 /*
 656  * Ensure that code doing a stackwalk and using javaVFrame::locals() to
 657  * get the value will see a materialized value and not a scalar-replaced
 658  * null value.
 659  */
 660 #define JVM_EnsureMaterializedForStackWalk(env, value) \
 661     do {} while(0) // Nothing to do.  The fact that the value escaped
 662                    // through a native method is enough.
 663 
 664 JNIEXPORT jobject JNICALL
 665 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
 666 
 667 /*
 668  * Signal support, used to implement the shutdown sequence.  Every VM must
 669  * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
 670  * (^C) and the latter for external termination (kill, system shutdown, etc.).
 671  * Other platform-dependent signal values may also be supported.
 672  */
 673 
 674 JNIEXPORT void * JNICALL
 675 JVM_RegisterSignal(jint sig, void *handler);
 676 
 677 JNIEXPORT jboolean JNICALL
 678 JVM_RaiseSignal(jint sig);
 679 
 680 JNIEXPORT jint JNICALL
 681 JVM_FindSignal(const char *name);
 682 
 683 /*
 684  * Retrieve the assertion directives for the specified class.
 685  */
 686 JNIEXPORT jboolean JNICALL
 687 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
 688 
 689 /*
 690  * Retrieve the assertion directives from the VM.
 691  */
 692 JNIEXPORT jobject JNICALL
 693 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
 694 
 695 /*
 696  * java.util.concurrent.atomic.AtomicLong
 697  */
 698 JNIEXPORT jboolean JNICALL
 699 JVM_SupportsCX8(void);
 700 
 701 /*
 702  * com.sun.dtrace.jsdt support
 703  */
 704 
 705 #define JVM_TRACING_DTRACE_VERSION 1
 706 
 707 /*
 708  * Structure to pass one probe description to JVM
 709  */
 710 typedef struct {
 711     jmethodID method;
 712     jstring   function;
 713     jstring   name;
 714     void*            reserved[4];     // for future use
 715 } JVM_DTraceProbe;
 716 
 717 /**
 718  * Encapsulates the stability ratings for a DTrace provider field
 719  */
 720 typedef struct {
 721     jint nameStability;
 722     jint dataStability;
 723     jint dependencyClass;
 724 } JVM_DTraceInterfaceAttributes;
 725 
 726 /*
 727  * Structure to pass one provider description to JVM
 728  */
 729 typedef struct {
 730     jstring                       name;
 731     JVM_DTraceProbe*              probes;
 732     jint                          probe_count;
 733     JVM_DTraceInterfaceAttributes providerAttributes;
 734     JVM_DTraceInterfaceAttributes moduleAttributes;
 735     JVM_DTraceInterfaceAttributes functionAttributes;
 736     JVM_DTraceInterfaceAttributes nameAttributes;
 737     JVM_DTraceInterfaceAttributes argsAttributes;
 738     void*                         reserved[4]; // for future use
 739 } JVM_DTraceProvider;
 740 
 741 /*
 742  * Get the version number the JVM was built with
 743  */
 744 JNIEXPORT jint JNICALL
 745 JVM_DTraceGetVersion(JNIEnv* env);
 746 
 747 /*
 748  * Register new probe with given signature, return global handle
 749  *
 750  * The version passed in is the version that the library code was
 751  * built with.
 752  */
 753 JNIEXPORT jlong JNICALL
 754 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
 755   jint providers_count, JVM_DTraceProvider* providers);
 756 
 757 /*
 758  * Check JSDT probe
 759  */
 760 JNIEXPORT jboolean JNICALL
 761 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
 762 
 763 /*
 764  * Destroy custom DOF
 765  */
 766 JNIEXPORT void JNICALL
 767 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
 768 
 769 /*
 770  * Check to see if DTrace is supported by OS
 771  */
 772 JNIEXPORT jboolean JNICALL
 773 JVM_DTraceIsSupported(JNIEnv* env);
 774 
 775 /*************************************************************************
 776  PART 2: Support for the Verifier and Class File Format Checker
 777  ************************************************************************/
 778 /*
 779  * Return the class name in UTF format. The result is valid
 780  * until JVM_ReleaseUTf is called.
 781  *
 782  * The caller must treat the string as a constant and not modify it
 783  * in any way.
 784  */
 785 JNIEXPORT const char * JNICALL
 786 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
 787 
 788 /*
 789  * Returns the constant pool types in the buffer provided by "types."
 790  */
 791 JNIEXPORT void JNICALL
 792 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
 793 
 794 /*
 795  * Returns the number of Constant Pool entries.
 796  */
 797 JNIEXPORT jint JNICALL
 798 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
 799 
 800 /*
 801  * Returns the number of *declared* fields or methods.
 802  */
 803 JNIEXPORT jint JNICALL
 804 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
 805 
 806 JNIEXPORT jint JNICALL
 807 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
 808 
 809 /*
 810  * Returns the CP indexes of exceptions raised by a given method.
 811  * Places the result in the given buffer.
 812  *
 813  * The method is identified by method_index.
 814  */
 815 JNIEXPORT void JNICALL
 816 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
 817                                 unsigned short *exceptions);
 818 /*
 819  * Returns the number of exceptions raised by a given method.
 820  * The method is identified by method_index.
 821  */
 822 JNIEXPORT jint JNICALL
 823 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
 824 
 825 /*
 826  * Returns the byte code sequence of a given method.
 827  * Places the result in the given buffer.
 828  *
 829  * The method is identified by method_index.
 830  */
 831 JNIEXPORT void JNICALL
 832 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
 833                         unsigned char *code);
 834 
 835 /*
 836  * Returns the length of the byte code sequence of a given method.
 837  * The method is identified by method_index.
 838  */
 839 JNIEXPORT jint JNICALL
 840 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
 841 
 842 /*
 843  * A structure used to a capture exception table entry in a Java method.
 844  */
 845 typedef struct {
 846     jint start_pc;
 847     jint end_pc;
 848     jint handler_pc;
 849     jint catchType;
 850 } JVM_ExceptionTableEntryType;
 851 
 852 /*
 853  * Returns the exception table entry at entry_index of a given method.
 854  * Places the result in the given buffer.
 855  *
 856  * The method is identified by method_index.
 857  */
 858 JNIEXPORT void JNICALL
 859 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
 860                                    jint entry_index,
 861                                    JVM_ExceptionTableEntryType *entry);
 862 
 863 /*
 864  * Returns the length of the exception table of a given method.
 865  * The method is identified by method_index.
 866  */
 867 JNIEXPORT jint JNICALL
 868 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
 869 
 870 /*
 871  * Returns the modifiers of a given field.
 872  * The field is identified by field_index.
 873  */
 874 JNIEXPORT jint JNICALL
 875 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
 876 
 877 /*
 878  * Returns the modifiers of a given method.
 879  * The method is identified by method_index.
 880  */
 881 JNIEXPORT jint JNICALL
 882 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
 883 
 884 /*
 885  * Returns the number of local variables of a given method.
 886  * The method is identified by method_index.
 887  */
 888 JNIEXPORT jint JNICALL
 889 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
 890 
 891 /*
 892  * Returns the number of arguments (including this pointer) of a given method.
 893  * The method is identified by method_index.
 894  */
 895 JNIEXPORT jint JNICALL
 896 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
 897 
 898 /*
 899  * Returns the maximum amount of stack (in words) used by a given method.
 900  * The method is identified by method_index.
 901  */
 902 JNIEXPORT jint JNICALL
 903 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
 904 
 905 /*
 906  * Is a given method a constructor.
 907  * The method is identified by method_index.
 908  */
 909 JNIEXPORT jboolean JNICALL
 910 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
 911 
 912 /*
 913  * Is the given method generated by the VM.
 914  * The method is identified by method_index.
 915  */
 916 JNIEXPORT jboolean JNICALL
 917 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
 918 
 919 /*
 920  * Returns the name of a given method in UTF format.
 921  * The result remains valid until JVM_ReleaseUTF is called.
 922  *
 923  * The caller must treat the string as a constant and not modify it
 924  * in any way.
 925  */
 926 JNIEXPORT const char * JNICALL
 927 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
 928 
 929 /*
 930  * Returns the signature of a given method in UTF format.
 931  * The result remains valid until JVM_ReleaseUTF is called.
 932  *
 933  * The caller must treat the string as a constant and not modify it
 934  * in any way.
 935  */
 936 JNIEXPORT const char * JNICALL
 937 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
 938 
 939 /*
 940  * Returns the name of the field referred to at a given constant pool
 941  * index.
 942  *
 943  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 944  * is called.
 945  *
 946  * The caller must treat the string as a constant and not modify it
 947  * in any way.
 948  */
 949 JNIEXPORT const char * JNICALL
 950 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
 951 
 952 /*
 953  * Returns the name of the method referred to at a given constant pool
 954  * index.
 955  *
 956  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 957  * is called.
 958  *
 959  * The caller must treat the string as a constant and not modify it
 960  * in any way.
 961  */
 962 JNIEXPORT const char * JNICALL
 963 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
 964 
 965 /*
 966  * Returns the signature of the method referred to at a given constant pool
 967  * index.
 968  *
 969  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 970  * is called.
 971  *
 972  * The caller must treat the string as a constant and not modify it
 973  * in any way.
 974  */
 975 JNIEXPORT const char * JNICALL
 976 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
 977 
 978 /*
 979  * Returns the signature of the field referred to at a given constant pool
 980  * index.
 981  *
 982  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 983  * is called.
 984  *
 985  * The caller must treat the string as a constant and not modify it
 986  * in any way.
 987  */
 988 JNIEXPORT const char * JNICALL
 989 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
 990 
 991 /*
 992  * Returns the class name referred to at a given constant pool index.
 993  *
 994  * The result is in UTF format and remains valid until JVM_ReleaseUTF
 995  * is called.
 996  *
 997  * The caller must treat the string as a constant and not modify it
 998  * in any way.
 999  */
1000 JNIEXPORT const char * JNICALL
1001 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1002 
1003 /*
1004  * Returns the class name referred to at a given constant pool index.
1005  *
1006  * The constant pool entry must refer to a CONSTANT_Fieldref.
1007  *
1008  * The result is in UTF format and remains valid until JVM_ReleaseUTF
1009  * is called.
1010  *
1011  * The caller must treat the string as a constant and not modify it
1012  * in any way.
1013  */
1014 JNIEXPORT const char * JNICALL
1015 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1016 
1017 /*
1018  * Returns the class name referred to at a given constant pool index.
1019  *
1020  * The constant pool entry must refer to CONSTANT_Methodref or
1021  * CONSTANT_InterfaceMethodref.
1022  *
1023  * The result is in UTF format and remains valid until JVM_ReleaseUTF
1024  * is called.
1025  *
1026  * The caller must treat the string as a constant and not modify it
1027  * in any way.
1028  */
1029 JNIEXPORT const char * JNICALL
1030 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1031 
1032 /*
1033  * Returns the modifiers of a field in calledClass. The field is
1034  * referred to in class cb at constant pool entry index.
1035  *
1036  * The caller must treat the string as a constant and not modify it
1037  * in any way.
1038  *
1039  * Returns -1 if the field does not exist in calledClass.
1040  */
1041 JNIEXPORT jint JNICALL
1042 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1043 
1044 /*
1045  * Returns the modifiers of a method in calledClass. The method is
1046  * referred to in class cb at constant pool entry index.
1047  *
1048  * Returns -1 if the method does not exist in calledClass.
1049  */
1050 JNIEXPORT jint JNICALL
1051 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1052 
1053 /*
1054  * Releases the UTF string obtained from the VM.
1055  */
1056 JNIEXPORT void JNICALL
1057 JVM_ReleaseUTF(const char *utf);
1058 
1059 /*
1060  * Compare if two classes are in the same package.
1061  */
1062 JNIEXPORT jboolean JNICALL
1063 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1064 
1065 /* Get classfile constants */
1066 #include "classfile_constants.h"
1067 
1068 /*
1069  * Support for a VM-independent class format checker.
1070  */
1071 typedef struct {
1072     unsigned long code;    /* byte code */
1073     unsigned long excs;    /* exceptions */
1074     unsigned long etab;    /* catch table */
1075     unsigned long lnum;    /* line number */
1076     unsigned long lvar;    /* local vars */
1077 } method_size_info;
1078 
1079 typedef struct {
1080     unsigned int constants;    /* constant pool */
1081     unsigned int fields;
1082     unsigned int methods;
1083     unsigned int interfaces;
1084     unsigned int fields2;      /* number of static 2-word fields */
1085     unsigned int innerclasses; /* # of records in InnerClasses attr */
1086 
1087     method_size_info clinit;   /* memory used in clinit */
1088     method_size_info main;     /* used everywhere else */
1089 } class_size_info;
1090 
1091 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1092                                         JVM_ACC_FINAL | \
1093                                         JVM_ACC_SUPER | \
1094                                         JVM_ACC_INTERFACE | \
1095                                         JVM_ACC_ABSTRACT | \
1096                                         JVM_ACC_ANNOTATION | \
1097                                         JVM_ACC_ENUM | \
1098                                         JVM_ACC_SYNTHETIC)
1099 
1100 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1101                                         JVM_ACC_PRIVATE | \
1102                                         JVM_ACC_PROTECTED | \
1103                                         JVM_ACC_STATIC | \
1104                                         JVM_ACC_FINAL | \
1105                                         JVM_ACC_VOLATILE | \
1106                                         JVM_ACC_TRANSIENT | \
1107                                         JVM_ACC_ENUM | \
1108                                         JVM_ACC_SYNTHETIC)
1109 
1110 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1111                                          JVM_ACC_PRIVATE | \
1112                                          JVM_ACC_PROTECTED | \
1113                                          JVM_ACC_STATIC | \
1114                                          JVM_ACC_FINAL | \
1115                                          JVM_ACC_SYNCHRONIZED | \
1116                                          JVM_ACC_BRIDGE | \
1117                                          JVM_ACC_VARARGS | \
1118                                          JVM_ACC_NATIVE | \
1119                                          JVM_ACC_ABSTRACT | \
1120                                          JVM_ACC_STRICT | \
1121                                          JVM_ACC_SYNTHETIC)
1122 
1123 
1124 /*************************************************************************
1125  PART 3: I/O and Network Support
1126  ************************************************************************/
1127 
1128 /*
1129  * Convert a pathname into native format.  This function does syntactic
1130  * cleanup, such as removing redundant separator characters.  It modifies
1131  * the given pathname string in place.
1132  */
1133 JNIEXPORT char * JNICALL
1134 JVM_NativePath(char *);
1135 
1136 /*
1137  * The standard printing functions supported by the Java VM. (Should they
1138  * be renamed to JVM_* in the future?
1139  */
1140 
1141 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1142  *  respectively, with the following differences:
1143  * - The string written to str is always zero-terminated, also in case of
1144  *   truncation (count is too small to hold the result string), unless count
1145  *   is 0. In case of truncation count-1 characters are written and '\0'
1146  *   appendend.
1147  * - If count is too small to hold the whole string, -1 is returned across
1148  *   all platforms. */
1149 
1150 JNIEXPORT int
1151 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1152 
1153 JNIEXPORT int
1154 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1155 
1156 JNIEXPORT int
1157 jio_fprintf(FILE *, const char *fmt, ...);
1158 
1159 JNIEXPORT int
1160 jio_vfprintf(FILE *, const char *fmt, va_list args);
1161 
1162 
1163 JNIEXPORT void * JNICALL
1164 JVM_RawMonitorCreate(void);
1165 
1166 JNIEXPORT void JNICALL
1167 JVM_RawMonitorDestroy(void *mon);
1168 
1169 JNIEXPORT jint JNICALL
1170 JVM_RawMonitorEnter(void *mon);
1171 
1172 JNIEXPORT void JNICALL
1173 JVM_RawMonitorExit(void *mon);
1174 
1175 /*
1176  * java.lang.management support
1177  */
1178 JNIEXPORT void* JNICALL
1179 JVM_GetManagement(jint version);
1180 
1181 /*
1182  * com.sun.tools.attach.VirtualMachine support
1183  *
1184  * Initialize the agent properties with the properties maintained in the VM.
1185  */
1186 JNIEXPORT jobject JNICALL
1187 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1188 
1189 JNIEXPORT jstring JNICALL
1190 JVM_GetTemporaryDirectory(JNIEnv *env);
1191 
1192 /* Generics reflection support.
1193  *
1194  * Returns information about the given class's EnclosingMethod
1195  * attribute, if present, or null if the class had no enclosing
1196  * method.
1197  *
1198  * If non-null, the returned array contains three elements. Element 0
1199  * is the java.lang.Class of which the enclosing method is a member,
1200  * and elements 1 and 2 are the java.lang.Strings for the enclosing
1201  * method's name and descriptor, respectively.
1202  */
1203 JNIEXPORT jobjectArray JNICALL
1204 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1205 
1206 /*
1207  * This structure is used by the launcher to get the default thread
1208  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1209  * version of 1.1.  As it is not supported otherwise, it has been removed
1210  * from jni.h
1211  */
1212 typedef struct JDK1_1InitArgs {
1213     jint version;
1214 
1215     char **properties;
1216     jint checkSource;
1217     jint nativeStackSize;
1218     jint javaStackSize;
1219     jint minHeapSize;
1220     jint maxHeapSize;
1221     jint verifyMode;
1222     char *classpath;
1223 
1224     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1225     void (JNICALL *exit)(jint code);
1226     void (JNICALL *abort)(void);
1227 
1228     jint enableClassGC;
1229     jint enableVerboseGC;
1230     jint disableAsyncGC;
1231     jint verbose;
1232     jboolean debugging;
1233     jint debugPort;
1234 } JDK1_1InitArgs;
1235 
1236 
1237 #ifdef __cplusplus
1238 } /* extern "C" */
1239 
1240 #endif /* __cplusplus */
1241 
1242 #endif /* !_JAVASOFT_JVM_H_ */