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. 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 void JNICALL 135 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, 136 jobject dst, jint dst_pos, jint length); 137 138 JNIEXPORT jobject JNICALL 139 JVM_InitProperties(JNIEnv *env, jobject p); 140 141 /* 142 * java.io.File 143 */ 144 JNIEXPORT void JNICALL 145 JVM_OnExit(void (*func)(void)); 146 147 /* 148 * java.nio.Bits 149 */ 150 JNIEXPORT void JNICALL 151 JVM_CopySwapMemory(JNIEnv *env, jobject srcObj, jlong srcOffset, 152 jobject dstObj, jlong dstOffset, jlong size, 153 jlong elemSize); 154 155 /* 156 * java.lang.Runtime 157 */ 158 JNIEXPORT void JNICALL 159 JVM_Exit(jint code); 160 161 JNIEXPORT void JNICALL 162 JVM_BeforeHalt(); 163 164 JNIEXPORT void JNICALL 165 JVM_Halt(jint code); 166 167 JNIEXPORT void JNICALL 168 JVM_GC(void); 169 170 /* Returns the number of real-time milliseconds that have elapsed since the 171 * least-recently-inspected heap object was last inspected by the garbage 172 * collector. 173 * 174 * For simple stop-the-world collectors this value is just the time 175 * since the most recent collection. For generational collectors it is the 176 * time since the oldest generation was most recently collected. Other 177 * collectors are free to return a pessimistic estimate of the elapsed time, or 178 * simply the time since the last full collection was performed. 179 * 180 * Note that in the presence of reference objects, a given object that is no 181 * longer strongly reachable may have to be inspected multiple times before it 182 * can be reclaimed. 183 */ 184 JNIEXPORT jlong JNICALL 185 JVM_MaxObjectInspectionAge(void); 186 187 JNIEXPORT void JNICALL 188 JVM_TraceInstructions(jboolean on); 189 190 JNIEXPORT void JNICALL 191 JVM_TraceMethodCalls(jboolean on); 192 193 JNIEXPORT jlong JNICALL 194 JVM_TotalMemory(void); 195 196 JNIEXPORT jlong JNICALL 197 JVM_FreeMemory(void); 198 199 JNIEXPORT jlong JNICALL 200 JVM_MaxMemory(void); 201 202 JNIEXPORT jint JNICALL 203 JVM_ActiveProcessorCount(void); 204 205 JNIEXPORT jboolean JNICALL 206 JVM_IsUseContainerSupport(void); 207 208 JNIEXPORT void * JNICALL 209 JVM_LoadLibrary(const char *name); 210 211 JNIEXPORT void JNICALL 212 JVM_UnloadLibrary(void * handle); 213 214 JNIEXPORT void * JNICALL 215 JVM_FindLibraryEntry(void *handle, const char *name); 216 217 JNIEXPORT jboolean JNICALL 218 JVM_IsSupportedJNIVersion(jint version); 219 220 /* 221 * java.lang.Float and java.lang.Double 222 */ 223 JNIEXPORT jboolean JNICALL 224 JVM_IsNaN(jdouble d); 225 226 /* 227 * java.lang.Throwable 228 */ 229 JNIEXPORT void JNICALL 230 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 231 232 JNIEXPORT jint JNICALL 233 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable); 234 235 JNIEXPORT jobject JNICALL 236 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index); 237 238 /* 239 * java.lang.Compiler 240 */ 241 JNIEXPORT void JNICALL 242 JVM_InitializeCompiler (JNIEnv *env, jclass compCls); 243 244 JNIEXPORT jboolean JNICALL 245 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls); 246 247 JNIEXPORT jboolean JNICALL 248 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls); 249 250 JNIEXPORT jboolean JNICALL 251 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname); 252 253 JNIEXPORT jobject JNICALL 254 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg); 255 256 JNIEXPORT void JNICALL 257 JVM_EnableCompiler(JNIEnv *env, jclass compCls); 258 259 JNIEXPORT void JNICALL 260 JVM_DisableCompiler(JNIEnv *env, jclass compCls); 261 262 /* 263 * java.lang.Thread 264 */ 265 JNIEXPORT void JNICALL 266 JVM_StartThread(JNIEnv *env, jobject thread); 267 268 JNIEXPORT void JNICALL 269 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 270 271 JNIEXPORT jboolean JNICALL 272 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 273 274 JNIEXPORT void JNICALL 275 JVM_SuspendThread(JNIEnv *env, jobject thread); 276 277 JNIEXPORT void JNICALL 278 JVM_ResumeThread(JNIEnv *env, jobject thread); 279 280 JNIEXPORT void JNICALL 281 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 282 283 JNIEXPORT void JNICALL 284 JVM_Yield(JNIEnv *env, jclass threadClass); 285 286 JNIEXPORT void JNICALL 287 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 288 289 JNIEXPORT jobject JNICALL 290 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 291 292 JNIEXPORT jint JNICALL 293 JVM_CountStackFrames(JNIEnv *env, jobject thread); 294 295 JNIEXPORT void JNICALL 296 JVM_Interrupt(JNIEnv *env, jobject thread); 297 298 JNIEXPORT jboolean JNICALL 299 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 300 301 JNIEXPORT jboolean JNICALL 302 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 303 304 JNIEXPORT void JNICALL 305 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 306 307 JNIEXPORT jobjectArray JNICALL 308 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 309 310 JNIEXPORT void JNICALL 311 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 312 313 /* getStackTrace() and getAllStackTraces() method */ 314 JNIEXPORT jobjectArray JNICALL 315 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 316 317 /* 318 * java.lang.SecurityManager 319 */ 320 JNIEXPORT jclass JNICALL 321 JVM_CurrentLoadedClass(JNIEnv *env); 322 323 JNIEXPORT jobject JNICALL 324 JVM_CurrentClassLoader(JNIEnv *env); 325 326 JNIEXPORT jobjectArray JNICALL 327 JVM_GetClassContext(JNIEnv *env); 328 329 JNIEXPORT jint JNICALL 330 JVM_ClassDepth(JNIEnv *env, jstring name); 331 332 JNIEXPORT jint JNICALL 333 JVM_ClassLoaderDepth(JNIEnv *env); 334 335 /* 336 * java.lang.Package 337 */ 338 JNIEXPORT jstring JNICALL 339 JVM_GetSystemPackage(JNIEnv *env, jstring name); 340 341 JNIEXPORT jobjectArray JNICALL 342 JVM_GetSystemPackages(JNIEnv *env); 343 344 /* 345 * java.io.ObjectInputStream 346 */ 347 JNIEXPORT jobject JNICALL 348 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass, 349 jclass initClass); 350 351 JNIEXPORT jobject JNICALL 352 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, 353 jint length); 354 355 JNIEXPORT jobject JNICALL 356 JVM_LatestUserDefinedLoader(JNIEnv *env); 357 358 /* 359 * This function has been deprecated and should not be considered 360 * part of the specified JVM interface. 361 */ 362 JNIEXPORT jclass JNICALL 363 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass, 364 jstring currClassName); 365 366 /* 367 * java.lang.reflect.Array 368 */ 369 JNIEXPORT jint JNICALL 370 JVM_GetArrayLength(JNIEnv *env, jobject arr); 371 372 JNIEXPORT jobject JNICALL 373 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 374 375 JNIEXPORT jvalue JNICALL 376 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 377 378 JNIEXPORT void JNICALL 379 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 380 381 JNIEXPORT void JNICALL 382 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 383 unsigned char vCode); 384 385 JNIEXPORT jobject JNICALL 386 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 387 388 JNIEXPORT jobject JNICALL 389 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 390 391 /* 392 * java.lang.Class and java.lang.ClassLoader 393 */ 394 395 #define JVM_CALLER_DEPTH -1 396 397 /* 398 * Returns the class in which the code invoking the native method 399 * belongs. 400 * 401 * Note that in JDK 1.1, native methods did not create a frame. 402 * In 1.2, they do. Therefore native methods like Class.forName 403 * can no longer look at the current frame for the caller class. 404 */ 405 JNIEXPORT jclass JNICALL 406 JVM_GetCallerClass(JNIEnv *env, int n); 407 408 /* 409 * Find primitive classes 410 * utf: class name 411 */ 412 JNIEXPORT jclass JNICALL 413 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 414 415 /* 416 * Link the class 417 */ 418 JNIEXPORT void JNICALL 419 JVM_ResolveClass(JNIEnv *env, jclass cls); 420 421 /* 422 * Find a class from a given class loader. Throw ClassNotFoundException 423 * or NoClassDefFoundError depending on the value of the last 424 * argument. 425 */ 426 JNIEXPORT jclass JNICALL 427 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init, 428 jobject loader, jboolean throwError); 429 430 /* 431 * Find a class from a boot class loader. Returns NULL if class not found. 432 */ 433 JNIEXPORT jclass JNICALL 434 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 435 436 /* 437 * Find a class from a given class loader. Throws ClassNotFoundException. 438 * name: name of class 439 * init: whether initialization is done 440 * loader: class loader to look up the class. This may not be the same as the caller's 441 * class loader. 442 * caller: initiating class. The initiating class may be null when a security 443 * manager is not installed. 444 */ 445 JNIEXPORT jclass JNICALL 446 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 447 jobject loader, jclass caller); 448 449 /* 450 * Find a class from a given class. 451 */ 452 JNIEXPORT jclass JNICALL 453 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 454 jclass from); 455 456 /* Find a loaded class cached by the VM */ 457 JNIEXPORT jclass JNICALL 458 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 459 460 /* Define a class */ 461 JNIEXPORT jclass JNICALL 462 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 463 jsize len, jobject pd); 464 465 /* Define a class with a source (added in JDK1.5) */ 466 JNIEXPORT jclass JNICALL 467 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 468 const jbyte *buf, jsize len, jobject pd, 469 const char *source); 470 471 /* Define a class with a source with conditional verification (added HSX 14) 472 * -Xverify:all will verify anyway, -Xverify:none will not verify, 473 * -Xverify:remote (default) will obey this conditional 474 * i.e. true = should_verify_class 475 */ 476 JNIEXPORT jclass JNICALL 477 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, 478 jobject loader, const jbyte *buf, 479 jsize len, jobject pd, const char *source, 480 jboolean verify); 481 482 /* 483 * Reflection support functions 484 */ 485 486 JNIEXPORT jstring JNICALL 487 JVM_GetClassName(JNIEnv *env, jclass cls); 488 489 JNIEXPORT jobjectArray JNICALL 490 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 491 492 JNIEXPORT jobject JNICALL 493 JVM_GetClassLoader(JNIEnv *env, jclass cls); 494 495 JNIEXPORT jboolean JNICALL 496 JVM_IsInterface(JNIEnv *env, jclass cls); 497 498 JNIEXPORT jobjectArray JNICALL 499 JVM_GetClassSigners(JNIEnv *env, jclass cls); 500 501 JNIEXPORT void JNICALL 502 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 503 504 JNIEXPORT jobject JNICALL 505 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 506 507 JNIEXPORT jboolean JNICALL 508 JVM_IsArrayClass(JNIEnv *env, jclass cls); 509 510 JNIEXPORT jboolean JNICALL 511 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 512 513 JNIEXPORT jclass JNICALL 514 JVM_GetComponentType(JNIEnv *env, jclass cls); 515 516 JNIEXPORT jint JNICALL 517 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 518 519 JNIEXPORT jobjectArray JNICALL 520 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 521 522 JNIEXPORT jclass JNICALL 523 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 524 525 /* Generics support (JDK 1.5) */ 526 JNIEXPORT jstring JNICALL 527 JVM_GetClassSignature(JNIEnv *env, jclass cls); 528 529 /* Annotations support (JDK 1.5) */ 530 JNIEXPORT jbyteArray JNICALL 531 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 532 533 /* Annotations support (JDK 1.6) */ 534 535 // field is a handle to a java.lang.reflect.Field object 536 JNIEXPORT jbyteArray JNICALL 537 JVM_GetFieldAnnotations(JNIEnv *env, jobject field); 538 539 // method is a handle to a java.lang.reflect.Method object 540 JNIEXPORT jbyteArray JNICALL 541 JVM_GetMethodAnnotations(JNIEnv *env, jobject method); 542 543 // method is a handle to a java.lang.reflect.Method object 544 JNIEXPORT jbyteArray JNICALL 545 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method); 546 547 // method is a handle to a java.lang.reflect.Method object 548 JNIEXPORT jbyteArray JNICALL 549 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method); 550 551 /* Type use annotations support (JDK 1.8) */ 552 553 JNIEXPORT jbyteArray JNICALL 554 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 555 556 // field is a handle to a java.lang.reflect.Field object 557 JNIEXPORT jbyteArray JNICALL 558 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 559 560 // method is a handle to a java.lang.reflect.Method object 561 JNIEXPORT jbyteArray JNICALL 562 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 563 564 /* 565 * New (JDK 1.4) reflection implementation 566 */ 567 568 JNIEXPORT jobjectArray JNICALL 569 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 570 571 JNIEXPORT jobjectArray JNICALL 572 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 573 574 JNIEXPORT jobjectArray JNICALL 575 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 576 577 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 578 This returns the access flags for the class as specified in the 579 class file rather than searching the InnerClasses attribute (if 580 present) to find the source-level access flags. Only the values of 581 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 582 valid. */ 583 JNIEXPORT jint JNICALL 584 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 585 586 /* 587 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 588 */ 589 590 JNIEXPORT jobject JNICALL 591 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 592 593 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 594 (JNIEnv *env, jobject obj, jobject unused); 595 596 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 597 (JNIEnv *env, jobject obj, jobject unused, jint index); 598 599 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 600 (JNIEnv *env, jobject obj, jobject unused, jint index); 601 602 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 603 (JNIEnv *env, jobject obj, jobject unused, jint index); 604 605 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 606 (JNIEnv *env, jobject obj, jobject unused, jint index); 607 608 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 609 (JNIEnv *env, jobject obj, jobject unused, jint index); 610 611 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 612 (JNIEnv *env, jobject obj, jobject unused, jint index); 613 614 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 615 (JNIEnv *env, jobject obj, jobject unused, jint index); 616 617 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 618 (JNIEnv *env, jobject obj, jobject unused, jint index); 619 620 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 621 (JNIEnv *env, jobject obj, jobject unused, jint index); 622 623 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 624 (JNIEnv *env, jobject obj, jobject unused, jint index); 625 626 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 627 (JNIEnv *env, jobject obj, jobject unused, jint index); 628 629 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 630 (JNIEnv *env, jobject obj, jobject unused, jint index); 631 632 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 633 (JNIEnv *env, jobject obj, jobject unused, jint index); 634 635 /* 636 * java.security.* 637 */ 638 639 JNIEXPORT jobject JNICALL 640 JVM_DoPrivileged(JNIEnv *env, jclass cls, 641 jobject action, jobject context, jboolean wrapException); 642 643 JNIEXPORT jobject JNICALL 644 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 645 646 JNIEXPORT jobject JNICALL 647 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 648 649 /* 650 * Signal support, used to implement the shutdown sequence. Every VM must 651 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 652 * (^C) and the latter for external termination (kill, system shutdown, etc.). 653 * Other platform-dependent signal values may also be supported. 654 */ 655 656 JNIEXPORT void * JNICALL 657 JVM_RegisterSignal(jint sig, void *handler); 658 659 JNIEXPORT jboolean JNICALL 660 JVM_RaiseSignal(jint sig); 661 662 JNIEXPORT jint JNICALL 663 JVM_FindSignal(const char *name); 664 665 /* 666 * Retrieve the assertion directives for the specified class. 667 */ 668 JNIEXPORT jboolean JNICALL 669 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 670 671 /* 672 * Retrieve the assertion directives from the VM. 673 */ 674 JNIEXPORT jobject JNICALL 675 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 676 677 /* 678 * java.util.concurrent.atomic.AtomicLong 679 */ 680 JNIEXPORT jboolean JNICALL 681 JVM_SupportsCX8(void); 682 683 JNIEXPORT jboolean JNICALL 684 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal); 685 686 /* 687 * com.sun.dtrace.jsdt support 688 */ 689 690 #define JVM_TRACING_DTRACE_VERSION 1 691 692 /* 693 * Structure to pass one probe description to JVM. 694 * 695 * The VM will overwrite the definition of the referenced method with 696 * code that will fire the probe. 697 */ 698 typedef struct { 699 jmethodID method; 700 jstring function; 701 jstring name; 702 void* reserved[4]; // for future use 703 } JVM_DTraceProbe; 704 705 /** 706 * Encapsulates the stability ratings for a DTrace provider field 707 */ 708 typedef struct { 709 jint nameStability; 710 jint dataStability; 711 jint dependencyClass; 712 } JVM_DTraceInterfaceAttributes; 713 714 /* 715 * Structure to pass one provider description to JVM 716 */ 717 typedef struct { 718 jstring name; 719 JVM_DTraceProbe* probes; 720 jint probe_count; 721 JVM_DTraceInterfaceAttributes providerAttributes; 722 JVM_DTraceInterfaceAttributes moduleAttributes; 723 JVM_DTraceInterfaceAttributes functionAttributes; 724 JVM_DTraceInterfaceAttributes nameAttributes; 725 JVM_DTraceInterfaceAttributes argsAttributes; 726 void* reserved[4]; // for future use 727 } JVM_DTraceProvider; 728 729 /* 730 * Get the version number the JVM was built with 731 */ 732 JNIEXPORT jint JNICALL 733 JVM_DTraceGetVersion(JNIEnv* env); 734 735 /* 736 * Register new probe with given signature, return global handle 737 * 738 * The version passed in is the version that the library code was 739 * built with. 740 */ 741 JNIEXPORT jlong JNICALL 742 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 743 jint providers_count, JVM_DTraceProvider* providers); 744 745 /* 746 * Check JSDT probe 747 */ 748 JNIEXPORT jboolean JNICALL 749 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 750 751 /* 752 * Destroy custom DOF 753 */ 754 JNIEXPORT void JNICALL 755 JVM_DTraceDispose(JNIEnv* env, jlong handle); 756 757 /* 758 * Check to see if DTrace is supported by OS 759 */ 760 JNIEXPORT jboolean JNICALL 761 JVM_DTraceIsSupported(JNIEnv* env); 762 763 /************************************************************************* 764 PART 2: Support for the Verifier and Class File Format Checker 765 ************************************************************************/ 766 /* 767 * Return the class name in UTF format. The result is valid 768 * until JVM_ReleaseUTf is called. 769 * 770 * The caller must treat the string as a constant and not modify it 771 * in any way. 772 */ 773 JNIEXPORT const char * JNICALL 774 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 775 776 /* 777 * Returns the constant pool types in the buffer provided by "types." 778 */ 779 JNIEXPORT void JNICALL 780 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 781 782 /* 783 * Returns the number of Constant Pool entries. 784 */ 785 JNIEXPORT jint JNICALL 786 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 787 788 /* 789 * Returns the number of *declared* fields or methods. 790 */ 791 JNIEXPORT jint JNICALL 792 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 793 794 JNIEXPORT jint JNICALL 795 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 796 797 /* 798 * Returns the CP indexes of exceptions raised by a given method. 799 * Places the result in the given buffer. 800 * 801 * The method is identified by method_index. 802 */ 803 JNIEXPORT void JNICALL 804 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 805 unsigned short *exceptions); 806 /* 807 * Returns the number of exceptions raised by a given method. 808 * The method is identified by method_index. 809 */ 810 JNIEXPORT jint JNICALL 811 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 812 813 /* 814 * Returns the byte code sequence of a given method. 815 * Places the result in the given buffer. 816 * 817 * The method is identified by method_index. 818 */ 819 JNIEXPORT void JNICALL 820 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 821 unsigned char *code); 822 823 /* 824 * Returns the length of the byte code sequence of a given method. 825 * The method is identified by method_index. 826 */ 827 JNIEXPORT jint JNICALL 828 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 829 830 /* 831 * A structure used to a capture exception table entry in a Java method. 832 */ 833 typedef struct { 834 jint start_pc; 835 jint end_pc; 836 jint handler_pc; 837 jint catchType; 838 } JVM_ExceptionTableEntryType; 839 840 /* 841 * Returns the exception table entry at entry_index of a given method. 842 * Places the result in the given buffer. 843 * 844 * The method is identified by method_index. 845 */ 846 JNIEXPORT void JNICALL 847 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 848 jint entry_index, 849 JVM_ExceptionTableEntryType *entry); 850 851 /* 852 * Returns the length of the exception table of a given method. 853 * The method is identified by method_index. 854 */ 855 JNIEXPORT jint JNICALL 856 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 857 858 /* 859 * Returns the modifiers of a given field. 860 * The field is identified by field_index. 861 */ 862 JNIEXPORT jint JNICALL 863 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 864 865 /* 866 * Returns the modifiers of a given method. 867 * The method is identified by method_index. 868 */ 869 JNIEXPORT jint JNICALL 870 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 871 872 /* 873 * Returns the number of local variables of a given method. 874 * The method is identified by method_index. 875 */ 876 JNIEXPORT jint JNICALL 877 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 878 879 /* 880 * Returns the number of arguments (including this pointer) of a given method. 881 * The method is identified by method_index. 882 */ 883 JNIEXPORT jint JNICALL 884 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 885 886 /* 887 * Returns the maximum amount of stack (in words) used by a given method. 888 * The method is identified by method_index. 889 */ 890 JNIEXPORT jint JNICALL 891 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 892 893 /* 894 * Is a given method a constructor. 895 * The method is identified by method_index. 896 */ 897 JNIEXPORT jboolean JNICALL 898 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 899 900 /* 901 * Is the given method generated by the VM. 902 * The method is identified by method_index. 903 */ 904 JNIEXPORT jboolean JNICALL 905 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 906 907 /* 908 * Returns the name of a given method in UTF format. 909 * The result remains valid until JVM_ReleaseUTF is called. 910 * 911 * The caller must treat the string as a constant and not modify it 912 * in any way. 913 */ 914 JNIEXPORT const char * JNICALL 915 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 916 917 /* 918 * Returns the signature of a given method in UTF format. 919 * The result remains valid until JVM_ReleaseUTF is called. 920 * 921 * The caller must treat the string as a constant and not modify it 922 * in any way. 923 */ 924 JNIEXPORT const char * JNICALL 925 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 926 927 /* 928 * Returns the name of the field refered to at a given constant pool 929 * index. 930 * 931 * The result is in UTF format and remains valid until JVM_ReleaseUTF 932 * is called. 933 * 934 * The caller must treat the string as a constant and not modify it 935 * in any way. 936 */ 937 JNIEXPORT const char * JNICALL 938 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 939 940 /* 941 * Returns the name of the method refered to at a given constant pool 942 * index. 943 * 944 * The result is in UTF format and remains valid until JVM_ReleaseUTF 945 * is called. 946 * 947 * The caller must treat the string as a constant and not modify it 948 * in any way. 949 */ 950 JNIEXPORT const char * JNICALL 951 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 952 953 /* 954 * Returns the signature of the method refered to at a given constant pool 955 * index. 956 * 957 * The result is in UTF format and remains valid until JVM_ReleaseUTF 958 * is called. 959 * 960 * The caller must treat the string as a constant and not modify it 961 * in any way. 962 */ 963 JNIEXPORT const char * JNICALL 964 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 965 966 /* 967 * Returns the signature of the field refered to at a given constant pool 968 * index. 969 * 970 * The result is in UTF format and remains valid until JVM_ReleaseUTF 971 * is called. 972 * 973 * The caller must treat the string as a constant and not modify it 974 * in any way. 975 */ 976 JNIEXPORT const char * JNICALL 977 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 978 979 /* 980 * Returns the class name refered to at a given constant pool 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_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 990 991 /* 992 * Returns the class name refered to at a given constant pool index. 993 * 994 * The constant pool entry must refer to a CONSTANT_Fieldref. 995 * 996 * The result is in UTF format and remains valid until JVM_ReleaseUTF 997 * is called. 998 * 999 * The caller must treat the string as a constant and not modify it 1000 * in any way. 1001 */ 1002 JNIEXPORT const char * JNICALL 1003 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 1004 1005 /* 1006 * Returns the class name refered to at a given constant pool index. 1007 * 1008 * The constant pool entry must refer to CONSTANT_Methodref or 1009 * CONSTANT_InterfaceMethodref. 1010 * 1011 * The result is in UTF format and remains valid until JVM_ReleaseUTF 1012 * is called. 1013 * 1014 * The caller must treat the string as a constant and not modify it 1015 * in any way. 1016 */ 1017 JNIEXPORT const char * JNICALL 1018 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1019 1020 /* 1021 * Returns the modifiers of a field in calledClass. The field is 1022 * referred to in class cb at constant pool entry index. 1023 * 1024 * The caller must treat the string as a constant and not modify it 1025 * in any way. 1026 * 1027 * Returns -1 if the field does not exist in calledClass. 1028 */ 1029 JNIEXPORT jint JNICALL 1030 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1031 1032 /* 1033 * Returns the modifiers of a method in calledClass. The method is 1034 * referred to in class cb at constant pool entry index. 1035 * 1036 * Returns -1 if the method does not exist in calledClass. 1037 */ 1038 JNIEXPORT jint JNICALL 1039 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1040 1041 /* 1042 * Releases the UTF string obtained from the VM. 1043 */ 1044 JNIEXPORT void JNICALL 1045 JVM_ReleaseUTF(const char *utf); 1046 1047 /* 1048 * Compare if two classes are in the same package. 1049 */ 1050 JNIEXPORT jboolean JNICALL 1051 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1052 1053 /* Constants in class files */ 1054 1055 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */ 1056 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */ 1057 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */ 1058 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */ 1059 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */ 1060 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */ 1061 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */ 1062 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */ 1063 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */ 1064 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */ 1065 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */ 1066 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */ 1067 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */ 1068 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */ 1069 #define JVM_ACC_STRICT 0x0800 /* strict floating point */ 1070 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */ 1071 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */ 1072 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */ 1073 1074 #define JVM_ACC_PUBLIC_BIT 0 1075 #define JVM_ACC_PRIVATE_BIT 1 1076 #define JVM_ACC_PROTECTED_BIT 2 1077 #define JVM_ACC_STATIC_BIT 3 1078 #define JVM_ACC_FINAL_BIT 4 1079 #define JVM_ACC_SYNCHRONIZED_BIT 5 1080 #define JVM_ACC_SUPER_BIT 5 1081 #define JVM_ACC_VOLATILE_BIT 6 1082 #define JVM_ACC_BRIDGE_BIT 6 1083 #define JVM_ACC_TRANSIENT_BIT 7 1084 #define JVM_ACC_VARARGS_BIT 7 1085 #define JVM_ACC_NATIVE_BIT 8 1086 #define JVM_ACC_INTERFACE_BIT 9 1087 #define JVM_ACC_ABSTRACT_BIT 10 1088 #define JVM_ACC_STRICT_BIT 11 1089 #define JVM_ACC_SYNTHETIC_BIT 12 1090 #define JVM_ACC_ANNOTATION_BIT 13 1091 #define JVM_ACC_ENUM_BIT 14 1092 1093 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java 1094 enum { 1095 JVM_CONSTANT_Utf8 = 1, 1096 JVM_CONSTANT_Unicode, /* unused */ 1097 JVM_CONSTANT_Integer, 1098 JVM_CONSTANT_Float, 1099 JVM_CONSTANT_Long, 1100 JVM_CONSTANT_Double, 1101 JVM_CONSTANT_Class, 1102 JVM_CONSTANT_String, 1103 JVM_CONSTANT_Fieldref, 1104 JVM_CONSTANT_Methodref, 1105 JVM_CONSTANT_InterfaceMethodref, 1106 JVM_CONSTANT_NameAndType, 1107 JVM_CONSTANT_MethodHandle = 15, // JSR 292 1108 JVM_CONSTANT_MethodType = 16, // JSR 292 1109 //JVM_CONSTANT_(unused) = 17, // JSR 292 early drafts only 1110 JVM_CONSTANT_InvokeDynamic = 18, // JSR 292 1111 JVM_CONSTANT_ExternalMax = 18 // Last tag found in classfiles 1112 }; 1113 1114 /* JVM_CONSTANT_MethodHandle subtypes */ 1115 enum { 1116 JVM_REF_getField = 1, 1117 JVM_REF_getStatic = 2, 1118 JVM_REF_putField = 3, 1119 JVM_REF_putStatic = 4, 1120 JVM_REF_invokeVirtual = 5, 1121 JVM_REF_invokeStatic = 6, 1122 JVM_REF_invokeSpecial = 7, 1123 JVM_REF_newInvokeSpecial = 8, 1124 JVM_REF_invokeInterface = 9 1125 }; 1126 1127 /* Used in the newarray instruction. */ 1128 1129 #define JVM_T_BOOLEAN 4 1130 #define JVM_T_CHAR 5 1131 #define JVM_T_FLOAT 6 1132 #define JVM_T_DOUBLE 7 1133 #define JVM_T_BYTE 8 1134 #define JVM_T_SHORT 9 1135 #define JVM_T_INT 10 1136 #define JVM_T_LONG 11 1137 1138 /* JVM method signatures */ 1139 1140 #define JVM_SIGNATURE_ARRAY '[' 1141 #define JVM_SIGNATURE_BYTE 'B' 1142 #define JVM_SIGNATURE_CHAR 'C' 1143 #define JVM_SIGNATURE_CLASS 'L' 1144 #define JVM_SIGNATURE_ENDCLASS ';' 1145 #define JVM_SIGNATURE_ENUM 'E' 1146 #define JVM_SIGNATURE_FLOAT 'F' 1147 #define JVM_SIGNATURE_DOUBLE 'D' 1148 #define JVM_SIGNATURE_FUNC '(' 1149 #define JVM_SIGNATURE_ENDFUNC ')' 1150 #define JVM_SIGNATURE_INT 'I' 1151 #define JVM_SIGNATURE_LONG 'J' 1152 #define JVM_SIGNATURE_SHORT 'S' 1153 #define JVM_SIGNATURE_VOID 'V' 1154 #define JVM_SIGNATURE_BOOLEAN 'Z' 1155 1156 /* 1157 * A function defined by the byte-code verifier and called by the VM. 1158 * This is not a function implemented in the VM. 1159 * 1160 * Returns JNI_FALSE if verification fails. A detailed error message 1161 * will be places in msg_buf, whose length is specified by buf_len. 1162 */ 1163 typedef jboolean (*verifier_fn_t)(JNIEnv *env, 1164 jclass cb, 1165 char * msg_buf, 1166 jint buf_len); 1167 1168 1169 /* 1170 * Support for a VM-independent class format checker. 1171 */ 1172 typedef struct { 1173 unsigned long code; /* byte code */ 1174 unsigned long excs; /* exceptions */ 1175 unsigned long etab; /* catch table */ 1176 unsigned long lnum; /* line number */ 1177 unsigned long lvar; /* local vars */ 1178 } method_size_info; 1179 1180 typedef struct { 1181 unsigned int constants; /* constant pool */ 1182 unsigned int fields; 1183 unsigned int methods; 1184 unsigned int interfaces; 1185 unsigned int fields2; /* number of static 2-word fields */ 1186 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1187 1188 method_size_info clinit; /* memory used in clinit */ 1189 method_size_info main; /* used everywhere else */ 1190 } class_size_info; 1191 1192 /* 1193 * Functions defined in libjava.so to perform string conversions. 1194 * 1195 */ 1196 1197 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1198 1199 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b); 1200 1201 /* This is the function defined in libjava.so that performs class 1202 * format checks. This functions fills in size information about 1203 * the class file and returns: 1204 * 1205 * 0: good 1206 * -1: out of memory 1207 * -2: bad format 1208 * -3: unsupported version 1209 * -4: bad class name 1210 */ 1211 1212 typedef jint (*check_format_fn_t)(char *class_name, 1213 unsigned char *data, 1214 unsigned int data_size, 1215 class_size_info *class_size, 1216 char *message_buffer, 1217 jint buffer_length, 1218 jboolean measure_only, 1219 jboolean check_relaxed); 1220 1221 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1222 JVM_ACC_FINAL | \ 1223 JVM_ACC_SUPER | \ 1224 JVM_ACC_INTERFACE | \ 1225 JVM_ACC_ABSTRACT | \ 1226 JVM_ACC_ANNOTATION | \ 1227 JVM_ACC_ENUM | \ 1228 JVM_ACC_SYNTHETIC) 1229 1230 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1231 JVM_ACC_PRIVATE | \ 1232 JVM_ACC_PROTECTED | \ 1233 JVM_ACC_STATIC | \ 1234 JVM_ACC_FINAL | \ 1235 JVM_ACC_VOLATILE | \ 1236 JVM_ACC_TRANSIENT | \ 1237 JVM_ACC_ENUM | \ 1238 JVM_ACC_SYNTHETIC) 1239 1240 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1241 JVM_ACC_PRIVATE | \ 1242 JVM_ACC_PROTECTED | \ 1243 JVM_ACC_STATIC | \ 1244 JVM_ACC_FINAL | \ 1245 JVM_ACC_SYNCHRONIZED | \ 1246 JVM_ACC_BRIDGE | \ 1247 JVM_ACC_VARARGS | \ 1248 JVM_ACC_NATIVE | \ 1249 JVM_ACC_ABSTRACT | \ 1250 JVM_ACC_STRICT | \ 1251 JVM_ACC_SYNTHETIC) 1252 1253 /* 1254 * This is the function defined in libjava.so to perform path 1255 * canonicalization. VM call this function before opening jar files 1256 * to load system classes. 1257 * 1258 */ 1259 1260 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1261 1262 /************************************************************************* 1263 PART 3: I/O and Network Support 1264 ************************************************************************/ 1265 1266 /* Note that the JVM IO functions are expected to return JVM_IO_ERR 1267 * when there is any kind of error. The caller can then use the 1268 * platform specific support (e.g., errno) to get the detailed 1269 * error info. The JVM_GetLastErrorString procedure may also be used 1270 * to obtain a descriptive error string. 1271 */ 1272 #define JVM_IO_ERR (-1) 1273 1274 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO 1275 * operation has been disrupted by Thread.interrupt. There are a 1276 * number of technical difficulties related to interruptible IO that 1277 * need to be solved. For example, most existing programs do not handle 1278 * InterruptedIOExceptions specially, they simply treat those as any 1279 * IOExceptions, which typically indicate fatal errors. 1280 * 1281 * There are also two modes of operation for interruptible IO. In the 1282 * resumption mode, an interrupted IO operation is guaranteed not to 1283 * have any side-effects, and can be restarted. In the termination mode, 1284 * an interrupted IO operation corrupts the underlying IO stream, so 1285 * that the only reasonable operation on an interrupted stream is to 1286 * close that stream. The resumption mode seems to be impossible to 1287 * implement on Win32 and Solaris. Implementing the termination mode is 1288 * easier, but it's not clear that's the right semantics. 1289 * 1290 * Interruptible IO is not supported on Win32.It can be enabled/disabled 1291 * using a compile-time flag on Solaris. Third-party JVM ports do not 1292 * need to implement interruptible IO. 1293 */ 1294 #define JVM_IO_INTR (-2) 1295 1296 /* Write a string into the given buffer, in the platform's local encoding, 1297 * that describes the most recent system-level error to occur in this thread. 1298 * Return the length of the string or zero if no error occurred. 1299 */ 1300 JNIEXPORT jint JNICALL 1301 JVM_GetLastErrorString(char *buf, int len); 1302 1303 /* 1304 * Convert a pathname into native format. This function does syntactic 1305 * cleanup, such as removing redundant separator characters. It modifies 1306 * the given pathname string in place. 1307 */ 1308 JNIEXPORT char * JNICALL 1309 JVM_NativePath(char *); 1310 1311 /* 1312 * JVM I/O error codes 1313 */ 1314 #define JVM_EEXIST -100 1315 1316 /* 1317 * Open a file descriptor. This function returns a negative error code 1318 * on error, and a non-negative integer that is the file descriptor on 1319 * success. 1320 */ 1321 JNIEXPORT jint JNICALL 1322 JVM_Open(const char *fname, jint flags, jint mode); 1323 1324 /* 1325 * Close a file descriptor. This function returns -1 on error, and 0 1326 * on success. 1327 * 1328 * fd the file descriptor to close. 1329 */ 1330 JNIEXPORT jint JNICALL 1331 JVM_Close(jint fd); 1332 1333 /* 1334 * Read data from a file decriptor into a char array. 1335 * 1336 * fd the file descriptor to read from. 1337 * buf the buffer where to put the read data. 1338 * nbytes the number of bytes to read. 1339 * 1340 * This function returns -1 on error, and 0 on success. 1341 */ 1342 JNIEXPORT jint JNICALL 1343 JVM_Read(jint fd, char *buf, jint nbytes); 1344 1345 /* 1346 * Write data from a char array to a file decriptor. 1347 * 1348 * fd the file descriptor to read from. 1349 * buf the buffer from which to fetch the data. 1350 * nbytes the number of bytes to write. 1351 * 1352 * This function returns -1 on error, and 0 on success. 1353 */ 1354 JNIEXPORT jint JNICALL 1355 JVM_Write(jint fd, char *buf, jint nbytes); 1356 1357 /* 1358 * Returns the number of bytes available for reading from a given file 1359 * descriptor 1360 */ 1361 JNIEXPORT jint JNICALL 1362 JVM_Available(jint fd, jlong *pbytes); 1363 1364 /* 1365 * Move the file descriptor pointer from whence by offset. 1366 * 1367 * fd the file descriptor to move. 1368 * offset the number of bytes to move it by. 1369 * whence the start from where to move it. 1370 * 1371 * This function returns the resulting pointer location. 1372 */ 1373 JNIEXPORT jlong JNICALL 1374 JVM_Lseek(jint fd, jlong offset, jint whence); 1375 1376 /* 1377 * Set the length of the file associated with the given descriptor to the given 1378 * length. If the new length is longer than the current length then the file 1379 * is extended; the contents of the extended portion are not defined. The 1380 * value of the file pointer is undefined after this procedure returns. 1381 */ 1382 JNIEXPORT jint JNICALL 1383 JVM_SetLength(jint fd, jlong length); 1384 1385 /* 1386 * Synchronize the file descriptor's in memory state with that of the 1387 * physical device. Return of -1 is an error, 0 is OK. 1388 */ 1389 JNIEXPORT jint JNICALL 1390 JVM_Sync(jint fd); 1391 1392 /* 1393 * Networking library support 1394 */ 1395 1396 JNIEXPORT jint JNICALL 1397 JVM_InitializeSocketLibrary(void); 1398 1399 struct sockaddr; 1400 1401 JNIEXPORT jint JNICALL 1402 JVM_Socket(jint domain, jint type, jint protocol); 1403 1404 JNIEXPORT jint JNICALL 1405 JVM_SocketClose(jint fd); 1406 1407 JNIEXPORT jint JNICALL 1408 JVM_SocketShutdown(jint fd, jint howto); 1409 1410 JNIEXPORT jint JNICALL 1411 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags); 1412 1413 JNIEXPORT jint JNICALL 1414 JVM_Send(jint fd, char *buf, jint nBytes, jint flags); 1415 1416 JNIEXPORT jint JNICALL 1417 JVM_Timeout(int fd, long timeout); 1418 1419 JNIEXPORT jint JNICALL 1420 JVM_Listen(jint fd, jint count); 1421 1422 JNIEXPORT jint JNICALL 1423 JVM_Connect(jint fd, struct sockaddr *him, jint len); 1424 1425 JNIEXPORT jint JNICALL 1426 JVM_Bind(jint fd, struct sockaddr *him, jint len); 1427 1428 JNIEXPORT jint JNICALL 1429 JVM_Accept(jint fd, struct sockaddr *him, jint *len); 1430 1431 JNIEXPORT jint JNICALL 1432 JVM_RecvFrom(jint fd, char *buf, int nBytes, 1433 int flags, struct sockaddr *from, int *fromlen); 1434 1435 JNIEXPORT jint JNICALL 1436 JVM_SendTo(jint fd, char *buf, int len, 1437 int flags, struct sockaddr *to, int tolen); 1438 1439 JNIEXPORT jint JNICALL 1440 JVM_SocketAvailable(jint fd, jint *result); 1441 1442 1443 JNIEXPORT jint JNICALL 1444 JVM_GetSockName(jint fd, struct sockaddr *him, int *len); 1445 1446 JNIEXPORT jint JNICALL 1447 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen); 1448 1449 JNIEXPORT jint JNICALL 1450 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen); 1451 1452 JNIEXPORT int JNICALL 1453 JVM_GetHostName(char* name, int namelen); 1454 1455 /* 1456 * The standard printing functions supported by the Java VM. (Should they 1457 * be renamed to JVM_* in the future? 1458 */ 1459 1460 /* 1461 * BE CAREFUL! The following functions do not implement the 1462 * full feature set of standard C printf formats. 1463 */ 1464 JNIEXPORT int 1465 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1466 1467 JNIEXPORT int 1468 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1469 1470 JNIEXPORT int 1471 jio_fprintf(FILE *, const char *fmt, ...); 1472 1473 JNIEXPORT int 1474 jio_vfprintf(FILE *, const char *fmt, va_list args); 1475 1476 1477 JNIEXPORT void * JNICALL 1478 JVM_RawMonitorCreate(void); 1479 1480 JNIEXPORT void JNICALL 1481 JVM_RawMonitorDestroy(void *mon); 1482 1483 JNIEXPORT jint JNICALL 1484 JVM_RawMonitorEnter(void *mon); 1485 1486 JNIEXPORT void JNICALL 1487 JVM_RawMonitorExit(void *mon); 1488 1489 /* 1490 * java.lang.reflect.Method 1491 */ 1492 JNIEXPORT jobject JNICALL 1493 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 1494 1495 /* 1496 * java.lang.reflect.Constructor 1497 */ 1498 JNIEXPORT jobject JNICALL 1499 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 1500 1501 /* 1502 * java.lang.management support 1503 */ 1504 JNIEXPORT void* JNICALL 1505 JVM_GetManagement(jint version); 1506 1507 /* 1508 * com.sun.tools.attach.VirtualMachine support 1509 * 1510 * Initialize the agent properties with the properties maintained in the VM. 1511 */ 1512 JNIEXPORT jobject JNICALL 1513 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1514 1515 JNIEXPORT jstring JNICALL 1516 JVM_GetTemporaryDirectory(JNIEnv *env); 1517 1518 /* Generics reflection support. 1519 * 1520 * Returns information about the given class's EnclosingMethod 1521 * attribute, if present, or null if the class had no enclosing 1522 * method. 1523 * 1524 * If non-null, the returned array contains three elements. Element 0 1525 * is the java.lang.Class of which the enclosing method is a member, 1526 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1527 * method's name and descriptor, respectively. 1528 */ 1529 JNIEXPORT jobjectArray JNICALL 1530 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1531 1532 /* 1533 * Java thread state support 1534 */ 1535 enum { 1536 JAVA_THREAD_STATE_NEW = 0, 1537 JAVA_THREAD_STATE_RUNNABLE = 1, 1538 JAVA_THREAD_STATE_BLOCKED = 2, 1539 JAVA_THREAD_STATE_WAITING = 3, 1540 JAVA_THREAD_STATE_TIMED_WAITING = 4, 1541 JAVA_THREAD_STATE_TERMINATED = 5, 1542 JAVA_THREAD_STATE_COUNT = 6 1543 }; 1544 1545 /* 1546 * Returns an array of the threadStatus values representing the 1547 * given Java thread state. Returns NULL if the VM version is 1548 * incompatible with the JDK or doesn't support the given 1549 * Java thread state. 1550 */ 1551 JNIEXPORT jintArray JNICALL 1552 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState); 1553 1554 /* 1555 * Returns an array of the substate names representing the 1556 * given Java thread state. Returns NULL if the VM version is 1557 * incompatible with the JDK or the VM doesn't support 1558 * the given Java thread state. 1559 * values must be the jintArray returned from JVM_GetThreadStateValues 1560 * and javaThreadState. 1561 */ 1562 JNIEXPORT jobjectArray JNICALL 1563 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values); 1564 1565 /* 1566 * Returns true if the JVM's lookup cache indicates that this class is 1567 * known to NOT exist for the given loader. 1568 */ 1569 JNIEXPORT jboolean JNICALL 1570 JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname); 1571 1572 /* 1573 * Returns an array of all URLs that are stored in the JVM's lookup cache 1574 * for the given loader. NULL if the lookup cache is unavailable. 1575 */ 1576 JNIEXPORT jobjectArray JNICALL 1577 JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader); 1578 1579 /* 1580 * Returns an array of all URLs that *may* contain the resource_name for the 1581 * given loader. This function returns an integer array, each element 1582 * of which can be used to index into the array returned by 1583 * JVM_GetResourceLookupCacheURLs of the same loader to determine the 1584 * URLs. 1585 */ 1586 JNIEXPORT jintArray JNICALL 1587 JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name); 1588 1589 1590 /* ========================================================================= 1591 * The following defines a private JVM interface that the JDK can query 1592 * for the JVM version and capabilities. sun.misc.Version defines 1593 * the methods for getting the VM version and its capabilities. 1594 * 1595 * When a new bit is added, the following should be updated to provide 1596 * access to the new capability: 1597 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1598 * SDK: Version class 1599 * 1600 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1601 * JVM to query for the JDK version and capabilities. 1602 * 1603 * When a new bit is added, the following should be updated to provide 1604 * access to the new capability: 1605 * HS: JDK_Version class 1606 * SDK: JDK_GetVersionInfo0 1607 * 1608 * ========================================================================== 1609 */ 1610 typedef struct { 1611 /* HotSpot Express VM version string: 1612 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>] 1613 */ 1614 unsigned int jvm_version; /* Consists of major.minor.0.build */ 1615 unsigned int update_version : 8; /* 0 in HotSpot Express VM */ 1616 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */ 1617 unsigned int reserved1 : 16; 1618 unsigned int reserved2; 1619 1620 /* The following bits represents JVM supports that JDK has dependency on. 1621 * JDK can use these bits to determine which JVM version 1622 * and support it has to maintain runtime compatibility. 1623 * 1624 * When a new bit is added in a minor or update release, make sure 1625 * the new bit is also added in the main/baseline. 1626 */ 1627 unsigned int is_attachable : 1; 1628 unsigned int : 31; 1629 unsigned int : 32; 1630 unsigned int : 32; 1631 } jvm_version_info; 1632 1633 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1634 #define JVM_VERSION_MINOR(version) ((version & 0x00FFFF00) >> 8) 1635 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp). 1636 #define JVM_VERSION_MICRO(version) 0 1637 /* Build number is available in all HotSpot Express VM builds. 1638 * It is defined in make/hotspot_version file. 1639 */ 1640 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1641 1642 JNIEXPORT void JNICALL 1643 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1644 1645 typedef struct { 1646 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx 1647 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */ 1648 /* and build number (xx) */ 1649 unsigned int update_version : 16; /* Update release version (uu) */ 1650 unsigned int special_update_version : 8; /* Special update release version (c)*/ 1651 unsigned int reserved1 : 8; 1652 unsigned int reserved2; 1653 1654 /* The following bits represents new JDK supports that VM has dependency on. 1655 * VM implementation can use these bits to determine which JDK version 1656 * and support it has to maintain runtime compatibility. 1657 * 1658 * When a new bit is added in a minor or update release, make sure 1659 * the new bit is also added in the main/baseline. 1660 */ 1661 unsigned int thread_park_blocker : 1; 1662 unsigned int post_vm_init_hook_enabled : 1; 1663 unsigned int pending_list_uses_discovered_field : 1; 1664 unsigned int : 29; 1665 unsigned int : 32; 1666 unsigned int : 32; 1667 } jdk_version_info; 1668 1669 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1670 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1671 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1672 1673 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN) 1674 * It will be zero for internal builds. 1675 */ 1676 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1677 1678 /* 1679 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1680 * that is dynamically looked up by JVM. 1681 */ 1682 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1683 1684 /* 1685 * This structure is used by the launcher to get the default thread 1686 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1687 * version of 1.1. As it is not supported otherwise, it has been removed 1688 * from jni.h 1689 */ 1690 typedef struct JDK1_1InitArgs { 1691 jint version; 1692 1693 char **properties; 1694 jint checkSource; 1695 jint nativeStackSize; 1696 jint javaStackSize; 1697 jint minHeapSize; 1698 jint maxHeapSize; 1699 jint verifyMode; 1700 char *classpath; 1701 1702 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1703 void (JNICALL *exit)(jint code); 1704 void (JNICALL *abort)(void); 1705 1706 jint enableClassGC; 1707 jint enableVerboseGC; 1708 jint disableAsyncGC; 1709 jint verbose; 1710 jboolean debugging; 1711 jint debugPort; 1712 } JDK1_1InitArgs; 1713 1714 #ifdef __cplusplus 1715 } /* extern "C" */ 1716 #endif /* __cplusplus */ 1717 1718 #endif /* !_JAVASOFT_JVM_H_ */ 1719 1720 #endif // SHARE_VM_PRIMS_JVM_H 1721