1 /* 2 * Copyright (c) 1997, 2014, 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.lang.Runtime 149 */ 150 JNIEXPORT void JNICALL 151 JVM_Exit(jint code); 152 153 JNIEXPORT void JNICALL 154 JVM_Halt(jint code); 155 156 JNIEXPORT void JNICALL 157 JVM_GC(void); 158 159 /* Returns the number of real-time milliseconds that have elapsed since the 160 * least-recently-inspected heap object was last inspected by the garbage 161 * collector. 162 * 163 * For simple stop-the-world collectors this value is just the time 164 * since the most recent collection. For generational collectors it is the 165 * time since the oldest generation was most recently collected. Other 166 * collectors are free to return a pessimistic estimate of the elapsed time, or 167 * simply the time since the last full collection was performed. 168 * 169 * Note that in the presence of reference objects, a given object that is no 170 * longer strongly reachable may have to be inspected multiple times before it 171 * can be reclaimed. 172 */ 173 JNIEXPORT jlong JNICALL 174 JVM_MaxObjectInspectionAge(void); 175 176 JNIEXPORT void JNICALL 177 JVM_TraceInstructions(jboolean on); 178 179 JNIEXPORT void JNICALL 180 JVM_TraceMethodCalls(jboolean on); 181 182 JNIEXPORT jlong JNICALL 183 JVM_TotalMemory(void); 184 185 JNIEXPORT jlong JNICALL 186 JVM_FreeMemory(void); 187 188 JNIEXPORT jlong JNICALL 189 JVM_MaxMemory(void); 190 191 JNIEXPORT jint JNICALL 192 JVM_ActiveProcessorCount(void); 193 194 JNIEXPORT void * JNICALL 195 JVM_LoadLibrary(const char *name); 196 197 JNIEXPORT void JNICALL 198 JVM_UnloadLibrary(void * handle); 199 200 JNIEXPORT void * JNICALL 201 JVM_FindLibraryEntry(void *handle, const char *name); 202 203 JNIEXPORT jboolean JNICALL 204 JVM_IsSupportedJNIVersion(jint version); 205 206 /* 207 * java.lang.Float and java.lang.Double 208 */ 209 JNIEXPORT jboolean JNICALL 210 JVM_IsNaN(jdouble d); 211 212 /* 213 * java.lang.Throwable 214 */ 215 JNIEXPORT void JNICALL 216 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 217 218 JNIEXPORT jint JNICALL 219 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable); 220 221 JNIEXPORT jobject JNICALL 222 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index); 223 224 /* 225 * java.lang.Compiler 226 */ 227 JNIEXPORT void JNICALL 228 JVM_InitializeCompiler (JNIEnv *env, jclass compCls); 229 230 JNIEXPORT jboolean JNICALL 231 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls); 232 233 JNIEXPORT jboolean JNICALL 234 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls); 235 236 JNIEXPORT jboolean JNICALL 237 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname); 238 239 JNIEXPORT jobject JNICALL 240 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg); 241 242 JNIEXPORT void JNICALL 243 JVM_EnableCompiler(JNIEnv *env, jclass compCls); 244 245 JNIEXPORT void JNICALL 246 JVM_DisableCompiler(JNIEnv *env, jclass compCls); 247 248 /* 249 * java.lang.Thread 250 */ 251 JNIEXPORT void JNICALL 252 JVM_StartThread(JNIEnv *env, jobject thread); 253 254 JNIEXPORT void JNICALL 255 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 256 257 JNIEXPORT jboolean JNICALL 258 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 259 260 JNIEXPORT void JNICALL 261 JVM_SuspendThread(JNIEnv *env, jobject thread); 262 263 JNIEXPORT void JNICALL 264 JVM_ResumeThread(JNIEnv *env, jobject thread); 265 266 JNIEXPORT void JNICALL 267 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 268 269 JNIEXPORT void JNICALL 270 JVM_Yield(JNIEnv *env, jclass threadClass); 271 272 JNIEXPORT void JNICALL 273 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 274 275 JNIEXPORT jobject JNICALL 276 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 277 278 JNIEXPORT jint JNICALL 279 JVM_CountStackFrames(JNIEnv *env, jobject thread); 280 281 JNIEXPORT void JNICALL 282 JVM_Interrupt(JNIEnv *env, jobject thread); 283 284 JNIEXPORT jboolean JNICALL 285 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 286 287 JNIEXPORT jboolean JNICALL 288 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 289 290 JNIEXPORT void JNICALL 291 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 292 293 JNIEXPORT jobjectArray JNICALL 294 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 295 296 JNIEXPORT void JNICALL 297 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 298 299 /* getStackTrace() and getAllStackTraces() method */ 300 JNIEXPORT jobjectArray JNICALL 301 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 302 303 /* 304 * java.lang.SecurityManager 305 */ 306 JNIEXPORT jclass JNICALL 307 JVM_CurrentLoadedClass(JNIEnv *env); 308 309 JNIEXPORT jobject JNICALL 310 JVM_CurrentClassLoader(JNIEnv *env); 311 312 JNIEXPORT jobjectArray JNICALL 313 JVM_GetClassContext(JNIEnv *env); 314 315 JNIEXPORT jint JNICALL 316 JVM_ClassDepth(JNIEnv *env, jstring name); 317 318 JNIEXPORT jint JNICALL 319 JVM_ClassLoaderDepth(JNIEnv *env); 320 321 /* 322 * java.lang.Package 323 */ 324 JNIEXPORT jstring JNICALL 325 JVM_GetSystemPackage(JNIEnv *env, jstring name); 326 327 JNIEXPORT jobjectArray JNICALL 328 JVM_GetSystemPackages(JNIEnv *env); 329 330 /* 331 * java.io.ObjectInputStream 332 */ 333 JNIEXPORT jobject JNICALL 334 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass, 335 jclass initClass); 336 337 JNIEXPORT jobject JNICALL 338 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, 339 jint length); 340 341 JNIEXPORT jobject JNICALL 342 JVM_LatestUserDefinedLoader(JNIEnv *env); 343 344 /* 345 * This function has been deprecated and should not be considered 346 * part of the specified JVM interface. 347 */ 348 JNIEXPORT jclass JNICALL 349 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass, 350 jstring currClassName); 351 352 /* 353 * java.lang.reflect.Array 354 */ 355 JNIEXPORT jint JNICALL 356 JVM_GetArrayLength(JNIEnv *env, jobject arr); 357 358 JNIEXPORT jobject JNICALL 359 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 360 361 JNIEXPORT jvalue JNICALL 362 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 363 364 JNIEXPORT void JNICALL 365 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 366 367 JNIEXPORT void JNICALL 368 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 369 unsigned char vCode); 370 371 JNIEXPORT jobject JNICALL 372 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 373 374 JNIEXPORT jobject JNICALL 375 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 376 377 /* 378 * java.lang.Class and java.lang.ClassLoader 379 */ 380 381 #define JVM_CALLER_DEPTH -1 382 383 /* 384 * Returns the class in which the code invoking the native method 385 * belongs. 386 * 387 * Note that in JDK 1.1, native methods did not create a frame. 388 * In 1.2, they do. Therefore native methods like Class.forName 389 * can no longer look at the current frame for the caller class. 390 */ 391 JNIEXPORT jclass JNICALL 392 JVM_GetCallerClass(JNIEnv *env, int n); 393 394 /* 395 * Find primitive classes 396 * utf: class name 397 */ 398 JNIEXPORT jclass JNICALL 399 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 400 401 /* 402 * Link the class 403 */ 404 JNIEXPORT void JNICALL 405 JVM_ResolveClass(JNIEnv *env, jclass cls); 406 407 /* 408 * Find a class from a given class loader. Throw ClassNotFoundException 409 * or NoClassDefFoundError depending on the value of the last 410 * argument. 411 */ 412 JNIEXPORT jclass JNICALL 413 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init, 414 jobject loader, jboolean throwError); 415 416 /* 417 * Find a class from a boot class loader. Returns NULL if class not found. 418 */ 419 JNIEXPORT jclass JNICALL 420 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 421 422 /* 423 * Find a class from a given class loader. Throws ClassNotFoundException. 424 * name: name of class 425 * init: whether initialization is done 426 * loader: class loader to look up the class. This may not be the same as the caller's 427 * class loader. 428 * caller: initiating class. The initiating class may be null when a security 429 * manager is not installed. 430 */ 431 JNIEXPORT jclass JNICALL 432 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 433 jobject loader, jclass caller); 434 435 /* 436 * Find a class from a given class. 437 */ 438 JNIEXPORT jclass JNICALL 439 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 440 jclass from); 441 442 /* Find a loaded class cached by the VM */ 443 JNIEXPORT jclass JNICALL 444 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 445 446 /* Define a class */ 447 JNIEXPORT jclass JNICALL 448 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 449 jsize len, jobject pd); 450 451 /* Define a class with a source (added in JDK1.5) */ 452 JNIEXPORT jclass JNICALL 453 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 454 const jbyte *buf, jsize len, jobject pd, 455 const char *source); 456 457 /* Define a class with a source with conditional verification (added HSX 14) 458 * -Xverify:all will verify anyway, -Xverify:none will not verify, 459 * -Xverify:remote (default) will obey this conditional 460 * i.e. true = should_verify_class 461 */ 462 JNIEXPORT jclass JNICALL 463 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, 464 jobject loader, const jbyte *buf, 465 jsize len, jobject pd, const char *source, 466 jboolean verify); 467 468 /* 469 * Reflection support functions 470 */ 471 472 JNIEXPORT jstring JNICALL 473 JVM_GetClassName(JNIEnv *env, jclass cls); 474 475 JNIEXPORT jobjectArray JNICALL 476 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 477 478 JNIEXPORT jobject JNICALL 479 JVM_GetClassLoader(JNIEnv *env, jclass cls); 480 481 JNIEXPORT jboolean JNICALL 482 JVM_IsInterface(JNIEnv *env, jclass cls); 483 484 JNIEXPORT jobjectArray JNICALL 485 JVM_GetClassSigners(JNIEnv *env, jclass cls); 486 487 JNIEXPORT void JNICALL 488 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 489 490 JNIEXPORT jobject JNICALL 491 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 492 493 JNIEXPORT jboolean JNICALL 494 JVM_IsArrayClass(JNIEnv *env, jclass cls); 495 496 JNIEXPORT jboolean JNICALL 497 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 498 499 JNIEXPORT jclass JNICALL 500 JVM_GetComponentType(JNIEnv *env, jclass cls); 501 502 JNIEXPORT jint JNICALL 503 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 504 505 JNIEXPORT jobjectArray JNICALL 506 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 507 508 JNIEXPORT jclass JNICALL 509 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 510 511 /* Generics support (JDK 1.5) */ 512 JNIEXPORT jstring JNICALL 513 JVM_GetClassSignature(JNIEnv *env, jclass cls); 514 515 /* Annotations support (JDK 1.5) */ 516 JNIEXPORT jbyteArray JNICALL 517 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 518 519 /* Annotations support (JDK 1.6) */ 520 521 // field is a handle to a java.lang.reflect.Field object 522 JNIEXPORT jbyteArray JNICALL 523 JVM_GetFieldAnnotations(JNIEnv *env, jobject field); 524 525 // method is a handle to a java.lang.reflect.Method object 526 JNIEXPORT jbyteArray JNICALL 527 JVM_GetMethodAnnotations(JNIEnv *env, jobject method); 528 529 // method is a handle to a java.lang.reflect.Method object 530 JNIEXPORT jbyteArray JNICALL 531 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method); 532 533 // method is a handle to a java.lang.reflect.Method object 534 JNIEXPORT jbyteArray JNICALL 535 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method); 536 537 /* Type use annotations support (JDK 1.8) */ 538 539 JNIEXPORT jbyteArray JNICALL 540 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 541 542 // field is a handle to a java.lang.reflect.Field object 543 JNIEXPORT jbyteArray JNICALL 544 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 545 546 // method is a handle to a java.lang.reflect.Method object 547 JNIEXPORT jbyteArray JNICALL 548 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 549 550 /* 551 * New (JDK 1.4) reflection implementation 552 */ 553 554 JNIEXPORT jobjectArray JNICALL 555 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 556 557 JNIEXPORT jobjectArray JNICALL 558 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 559 560 JNIEXPORT jobjectArray JNICALL 561 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 562 563 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 564 This returns the access flags for the class as specified in the 565 class file rather than searching the InnerClasses attribute (if 566 present) to find the source-level access flags. Only the values of 567 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 568 valid. */ 569 JNIEXPORT jint JNICALL 570 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 571 572 /* 573 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 574 */ 575 576 JNIEXPORT jobject JNICALL 577 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 578 579 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 580 (JNIEnv *env, jobject obj, jobject unused); 581 582 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 583 (JNIEnv *env, jobject obj, jobject unused, jint index); 584 585 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 586 (JNIEnv *env, jobject obj, jobject unused, jint index); 587 588 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 589 (JNIEnv *env, jobject obj, jobject unused, jint index); 590 591 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 592 (JNIEnv *env, jobject obj, jobject unused, jint index); 593 594 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 595 (JNIEnv *env, jobject obj, jobject unused, jint index); 596 597 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 598 (JNIEnv *env, jobject obj, jobject unused, jint index); 599 600 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 601 (JNIEnv *env, jobject obj, jobject unused, jint index); 602 603 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 604 (JNIEnv *env, jobject obj, jobject unused, jint index); 605 606 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 607 (JNIEnv *env, jobject obj, jobject unused, jint index); 608 609 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 610 (JNIEnv *env, jobject obj, jobject unused, jint index); 611 612 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 613 (JNIEnv *env, jobject obj, jobject unused, jint index); 614 615 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 616 (JNIEnv *env, jobject obj, jobject unused, jint index); 617 618 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 619 (JNIEnv *env, jobject obj, jobject unused, jint index); 620 621 /* 622 * java.security.* 623 */ 624 625 JNIEXPORT jobject JNICALL 626 JVM_DoPrivileged(JNIEnv *env, jclass cls, 627 jobject action, jobject context, jboolean wrapException); 628 629 JNIEXPORT jobject JNICALL 630 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 631 632 JNIEXPORT jobject JNICALL 633 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 634 635 /* 636 * Signal support, used to implement the shutdown sequence. Every VM must 637 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 638 * (^C) and the latter for external termination (kill, system shutdown, etc.). 639 * Other platform-dependent signal values may also be supported. 640 */ 641 642 JNIEXPORT void * JNICALL 643 JVM_RegisterSignal(jint sig, void *handler); 644 645 JNIEXPORT jboolean JNICALL 646 JVM_RaiseSignal(jint sig); 647 648 JNIEXPORT jint JNICALL 649 JVM_FindSignal(const char *name); 650 651 /* 652 * Retrieve the assertion directives for the specified class. 653 */ 654 JNIEXPORT jboolean JNICALL 655 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 656 657 /* 658 * Retrieve the assertion directives from the VM. 659 */ 660 JNIEXPORT jobject JNICALL 661 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 662 663 /* 664 * java.util.concurrent.atomic.AtomicLong 665 */ 666 JNIEXPORT jboolean JNICALL 667 JVM_SupportsCX8(void); 668 669 JNIEXPORT jboolean JNICALL 670 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal); 671 672 /* 673 * com.sun.dtrace.jsdt support 674 */ 675 676 #define JVM_TRACING_DTRACE_VERSION 1 677 678 /* 679 * Structure to pass one probe description to JVM. 680 * 681 * The VM will overwrite the definition of the referenced method with 682 * code that will fire the probe. 683 */ 684 typedef struct { 685 jmethodID method; 686 jstring function; 687 jstring name; 688 void* reserved[4]; // for future use 689 } JVM_DTraceProbe; 690 691 /** 692 * Encapsulates the stability ratings for a DTrace provider field 693 */ 694 typedef struct { 695 jint nameStability; 696 jint dataStability; 697 jint dependencyClass; 698 } JVM_DTraceInterfaceAttributes; 699 700 /* 701 * Structure to pass one provider description to JVM 702 */ 703 typedef struct { 704 jstring name; 705 JVM_DTraceProbe* probes; 706 jint probe_count; 707 JVM_DTraceInterfaceAttributes providerAttributes; 708 JVM_DTraceInterfaceAttributes moduleAttributes; 709 JVM_DTraceInterfaceAttributes functionAttributes; 710 JVM_DTraceInterfaceAttributes nameAttributes; 711 JVM_DTraceInterfaceAttributes argsAttributes; 712 void* reserved[4]; // for future use 713 } JVM_DTraceProvider; 714 715 /* 716 * Get the version number the JVM was built with 717 */ 718 JNIEXPORT jint JNICALL 719 JVM_DTraceGetVersion(JNIEnv* env); 720 721 /* 722 * Register new probe with given signature, return global handle 723 * 724 * The version passed in is the version that the library code was 725 * built with. 726 */ 727 JNIEXPORT jlong JNICALL 728 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 729 jint providers_count, JVM_DTraceProvider* providers); 730 731 /* 732 * Check JSDT probe 733 */ 734 JNIEXPORT jboolean JNICALL 735 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 736 737 /* 738 * Destroy custom DOF 739 */ 740 JNIEXPORT void JNICALL 741 JVM_DTraceDispose(JNIEnv* env, jlong handle); 742 743 /* 744 * Check to see if DTrace is supported by OS 745 */ 746 JNIEXPORT jboolean JNICALL 747 JVM_DTraceIsSupported(JNIEnv* env); 748 749 /************************************************************************* 750 PART 2: Support for the Verifier and Class File Format Checker 751 ************************************************************************/ 752 /* 753 * Return the class name in UTF format. The result is valid 754 * until JVM_ReleaseUTf is called. 755 * 756 * The caller must treat the string as a constant and not modify it 757 * in any way. 758 */ 759 JNIEXPORT const char * JNICALL 760 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 761 762 /* 763 * Returns the constant pool types in the buffer provided by "types." 764 */ 765 JNIEXPORT void JNICALL 766 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 767 768 /* 769 * Returns the number of Constant Pool entries. 770 */ 771 JNIEXPORT jint JNICALL 772 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 773 774 /* 775 * Returns the number of *declared* fields or methods. 776 */ 777 JNIEXPORT jint JNICALL 778 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 779 780 JNIEXPORT jint JNICALL 781 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 782 783 /* 784 * Returns the CP indexes of exceptions raised by a given method. 785 * Places the result in the given buffer. 786 * 787 * The method is identified by method_index. 788 */ 789 JNIEXPORT void JNICALL 790 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 791 unsigned short *exceptions); 792 /* 793 * Returns the number of exceptions raised by a given method. 794 * The method is identified by method_index. 795 */ 796 JNIEXPORT jint JNICALL 797 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 798 799 /* 800 * Returns the byte code sequence of a given method. 801 * Places the result in the given buffer. 802 * 803 * The method is identified by method_index. 804 */ 805 JNIEXPORT void JNICALL 806 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 807 unsigned char *code); 808 809 /* 810 * Returns the length of the byte code sequence of a given method. 811 * The method is identified by method_index. 812 */ 813 JNIEXPORT jint JNICALL 814 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 815 816 /* 817 * A structure used to a capture exception table entry in a Java method. 818 */ 819 typedef struct { 820 jint start_pc; 821 jint end_pc; 822 jint handler_pc; 823 jint catchType; 824 } JVM_ExceptionTableEntryType; 825 826 /* 827 * Returns the exception table entry at entry_index of a given method. 828 * Places the result in the given buffer. 829 * 830 * The method is identified by method_index. 831 */ 832 JNIEXPORT void JNICALL 833 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 834 jint entry_index, 835 JVM_ExceptionTableEntryType *entry); 836 837 /* 838 * Returns the length of the exception table of a given method. 839 * The method is identified by method_index. 840 */ 841 JNIEXPORT jint JNICALL 842 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 843 844 /* 845 * Returns the modifiers of a given field. 846 * The field is identified by field_index. 847 */ 848 JNIEXPORT jint JNICALL 849 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 850 851 /* 852 * Returns the modifiers of a given method. 853 * The method is identified by method_index. 854 */ 855 JNIEXPORT jint JNICALL 856 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 857 858 /* 859 * Returns the number of local variables of a given method. 860 * The method is identified by method_index. 861 */ 862 JNIEXPORT jint JNICALL 863 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 864 865 /* 866 * Returns the number of arguments (including this pointer) of a given method. 867 * The method is identified by method_index. 868 */ 869 JNIEXPORT jint JNICALL 870 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 871 872 /* 873 * Returns the maximum amount of stack (in words) used by a given method. 874 * The method is identified by method_index. 875 */ 876 JNIEXPORT jint JNICALL 877 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 878 879 /* 880 * Is a given method a constructor. 881 * The method is identified by method_index. 882 */ 883 JNIEXPORT jboolean JNICALL 884 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 885 886 /* 887 * Is the given method generated by the VM. 888 * The method is identified by method_index. 889 */ 890 JNIEXPORT jboolean JNICALL 891 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 892 893 /* 894 * Returns the name of a given method in UTF format. 895 * The result remains valid until JVM_ReleaseUTF is called. 896 * 897 * The caller must treat the string as a constant and not modify it 898 * in any way. 899 */ 900 JNIEXPORT const char * JNICALL 901 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 902 903 /* 904 * Returns the signature of a given method in UTF format. 905 * The result remains valid until JVM_ReleaseUTF is called. 906 * 907 * The caller must treat the string as a constant and not modify it 908 * in any way. 909 */ 910 JNIEXPORT const char * JNICALL 911 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 912 913 /* 914 * Returns the name of the field refered to at a given constant pool 915 * index. 916 * 917 * The result is in UTF format and remains valid until JVM_ReleaseUTF 918 * is called. 919 * 920 * The caller must treat the string as a constant and not modify it 921 * in any way. 922 */ 923 JNIEXPORT const char * JNICALL 924 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 925 926 /* 927 * Returns the name of the method refered to at a given constant pool 928 * index. 929 * 930 * The result is in UTF format and remains valid until JVM_ReleaseUTF 931 * 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_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 938 939 /* 940 * Returns the signature of the method refered 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_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 951 952 /* 953 * Returns the signature of the field refered 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_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 964 965 /* 966 * Returns the class name refered to at a given constant pool index. 967 * 968 * The result is in UTF format and remains valid until JVM_ReleaseUTF 969 * is called. 970 * 971 * The caller must treat the string as a constant and not modify it 972 * in any way. 973 */ 974 JNIEXPORT const char * JNICALL 975 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 976 977 /* 978 * Returns the class name refered to at a given constant pool index. 979 * 980 * The constant pool entry must refer to a CONSTANT_Fieldref. 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_GetCPFieldClassNameUTF(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 CONSTANT_Methodref or 995 * CONSTANT_InterfaceMethodref. 996 * 997 * The result is in UTF format and remains valid until JVM_ReleaseUTF 998 * is called. 999 * 1000 * The caller must treat the string as a constant and not modify it 1001 * in any way. 1002 */ 1003 JNIEXPORT const char * JNICALL 1004 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 1005 1006 /* 1007 * Returns the modifiers of a field in calledClass. The field is 1008 * referred to in class cb at constant pool entry index. 1009 * 1010 * The caller must treat the string as a constant and not modify it 1011 * in any way. 1012 * 1013 * Returns -1 if the field does not exist in calledClass. 1014 */ 1015 JNIEXPORT jint JNICALL 1016 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1017 1018 /* 1019 * Returns the modifiers of a method in calledClass. The method is 1020 * referred to in class cb at constant pool entry index. 1021 * 1022 * Returns -1 if the method does not exist in calledClass. 1023 */ 1024 JNIEXPORT jint JNICALL 1025 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 1026 1027 /* 1028 * Releases the UTF string obtained from the VM. 1029 */ 1030 JNIEXPORT void JNICALL 1031 JVM_ReleaseUTF(const char *utf); 1032 1033 /* 1034 * Compare if two classes are in the same package. 1035 */ 1036 JNIEXPORT jboolean JNICALL 1037 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1038 1039 /* Constants in class files */ 1040 1041 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */ 1042 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */ 1043 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */ 1044 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */ 1045 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */ 1046 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */ 1047 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */ 1048 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */ 1049 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */ 1050 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */ 1051 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */ 1052 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */ 1053 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */ 1054 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */ 1055 #define JVM_ACC_STRICT 0x0800 /* strict floating point */ 1056 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */ 1057 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */ 1058 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */ 1059 1060 #define JVM_ACC_PUBLIC_BIT 0 1061 #define JVM_ACC_PRIVATE_BIT 1 1062 #define JVM_ACC_PROTECTED_BIT 2 1063 #define JVM_ACC_STATIC_BIT 3 1064 #define JVM_ACC_FINAL_BIT 4 1065 #define JVM_ACC_SYNCHRONIZED_BIT 5 1066 #define JVM_ACC_SUPER_BIT 5 1067 #define JVM_ACC_VOLATILE_BIT 6 1068 #define JVM_ACC_BRIDGE_BIT 6 1069 #define JVM_ACC_TRANSIENT_BIT 7 1070 #define JVM_ACC_VARARGS_BIT 7 1071 #define JVM_ACC_NATIVE_BIT 8 1072 #define JVM_ACC_INTERFACE_BIT 9 1073 #define JVM_ACC_ABSTRACT_BIT 10 1074 #define JVM_ACC_STRICT_BIT 11 1075 #define JVM_ACC_SYNTHETIC_BIT 12 1076 #define JVM_ACC_ANNOTATION_BIT 13 1077 #define JVM_ACC_ENUM_BIT 14 1078 1079 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java 1080 enum { 1081 JVM_CONSTANT_Utf8 = 1, 1082 JVM_CONSTANT_Unicode, /* unused */ 1083 JVM_CONSTANT_Integer, 1084 JVM_CONSTANT_Float, 1085 JVM_CONSTANT_Long, 1086 JVM_CONSTANT_Double, 1087 JVM_CONSTANT_Class, 1088 JVM_CONSTANT_String, 1089 JVM_CONSTANT_Fieldref, 1090 JVM_CONSTANT_Methodref, 1091 JVM_CONSTANT_InterfaceMethodref, 1092 JVM_CONSTANT_NameAndType, 1093 JVM_CONSTANT_MethodHandle = 15, // JSR 292 1094 JVM_CONSTANT_MethodType = 16, // JSR 292 1095 //JVM_CONSTANT_(unused) = 17, // JSR 292 early drafts only 1096 JVM_CONSTANT_InvokeDynamic = 18, // JSR 292 1097 JVM_CONSTANT_ExternalMax = 18 // Last tag found in classfiles 1098 }; 1099 1100 /* JVM_CONSTANT_MethodHandle subtypes */ 1101 enum { 1102 JVM_REF_getField = 1, 1103 JVM_REF_getStatic = 2, 1104 JVM_REF_putField = 3, 1105 JVM_REF_putStatic = 4, 1106 JVM_REF_invokeVirtual = 5, 1107 JVM_REF_invokeStatic = 6, 1108 JVM_REF_invokeSpecial = 7, 1109 JVM_REF_newInvokeSpecial = 8, 1110 JVM_REF_invokeInterface = 9 1111 }; 1112 1113 /* Used in the newarray instruction. */ 1114 1115 #define JVM_T_BOOLEAN 4 1116 #define JVM_T_CHAR 5 1117 #define JVM_T_FLOAT 6 1118 #define JVM_T_DOUBLE 7 1119 #define JVM_T_BYTE 8 1120 #define JVM_T_SHORT 9 1121 #define JVM_T_INT 10 1122 #define JVM_T_LONG 11 1123 1124 /* JVM method signatures */ 1125 1126 #define JVM_SIGNATURE_ARRAY '[' 1127 #define JVM_SIGNATURE_BYTE 'B' 1128 #define JVM_SIGNATURE_CHAR 'C' 1129 #define JVM_SIGNATURE_CLASS 'L' 1130 #define JVM_SIGNATURE_ENDCLASS ';' 1131 #define JVM_SIGNATURE_ENUM 'E' 1132 #define JVM_SIGNATURE_FLOAT 'F' 1133 #define JVM_SIGNATURE_DOUBLE 'D' 1134 #define JVM_SIGNATURE_FUNC '(' 1135 #define JVM_SIGNATURE_ENDFUNC ')' 1136 #define JVM_SIGNATURE_INT 'I' 1137 #define JVM_SIGNATURE_LONG 'J' 1138 #define JVM_SIGNATURE_SHORT 'S' 1139 #define JVM_SIGNATURE_VOID 'V' 1140 #define JVM_SIGNATURE_BOOLEAN 'Z' 1141 1142 /* 1143 * A function defined by the byte-code verifier and called by the VM. 1144 * This is not a function implemented in the VM. 1145 * 1146 * Returns JNI_FALSE if verification fails. A detailed error message 1147 * will be places in msg_buf, whose length is specified by buf_len. 1148 */ 1149 typedef jboolean (*verifier_fn_t)(JNIEnv *env, 1150 jclass cb, 1151 char * msg_buf, 1152 jint buf_len); 1153 1154 1155 /* 1156 * Support for a VM-independent class format checker. 1157 */ 1158 typedef struct { 1159 unsigned long code; /* byte code */ 1160 unsigned long excs; /* exceptions */ 1161 unsigned long etab; /* catch table */ 1162 unsigned long lnum; /* line number */ 1163 unsigned long lvar; /* local vars */ 1164 } method_size_info; 1165 1166 typedef struct { 1167 unsigned int constants; /* constant pool */ 1168 unsigned int fields; 1169 unsigned int methods; 1170 unsigned int interfaces; 1171 unsigned int fields2; /* number of static 2-word fields */ 1172 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1173 1174 method_size_info clinit; /* memory used in clinit */ 1175 method_size_info main; /* used everywhere else */ 1176 } class_size_info; 1177 1178 /* 1179 * Functions defined in libjava.so to perform string conversions. 1180 * 1181 */ 1182 1183 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1184 1185 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b); 1186 1187 /* This is the function defined in libjava.so that performs class 1188 * format checks. This functions fills in size information about 1189 * the class file and returns: 1190 * 1191 * 0: good 1192 * -1: out of memory 1193 * -2: bad format 1194 * -3: unsupported version 1195 * -4: bad class name 1196 */ 1197 1198 typedef jint (*check_format_fn_t)(char *class_name, 1199 unsigned char *data, 1200 unsigned int data_size, 1201 class_size_info *class_size, 1202 char *message_buffer, 1203 jint buffer_length, 1204 jboolean measure_only, 1205 jboolean check_relaxed); 1206 1207 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1208 JVM_ACC_FINAL | \ 1209 JVM_ACC_SUPER | \ 1210 JVM_ACC_INTERFACE | \ 1211 JVM_ACC_ABSTRACT | \ 1212 JVM_ACC_ANNOTATION | \ 1213 JVM_ACC_ENUM | \ 1214 JVM_ACC_SYNTHETIC) 1215 1216 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1217 JVM_ACC_PRIVATE | \ 1218 JVM_ACC_PROTECTED | \ 1219 JVM_ACC_STATIC | \ 1220 JVM_ACC_FINAL | \ 1221 JVM_ACC_VOLATILE | \ 1222 JVM_ACC_TRANSIENT | \ 1223 JVM_ACC_ENUM | \ 1224 JVM_ACC_SYNTHETIC) 1225 1226 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1227 JVM_ACC_PRIVATE | \ 1228 JVM_ACC_PROTECTED | \ 1229 JVM_ACC_STATIC | \ 1230 JVM_ACC_FINAL | \ 1231 JVM_ACC_SYNCHRONIZED | \ 1232 JVM_ACC_BRIDGE | \ 1233 JVM_ACC_VARARGS | \ 1234 JVM_ACC_NATIVE | \ 1235 JVM_ACC_ABSTRACT | \ 1236 JVM_ACC_STRICT | \ 1237 JVM_ACC_SYNTHETIC) 1238 1239 /* 1240 * This is the function defined in libjava.so to perform path 1241 * canonicalization. VM call this function before opening jar files 1242 * to load system classes. 1243 * 1244 */ 1245 1246 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1247 1248 /************************************************************************* 1249 PART 3: I/O and Network Support 1250 ************************************************************************/ 1251 1252 /* Note that the JVM IO functions are expected to return JVM_IO_ERR 1253 * when there is any kind of error. The caller can then use the 1254 * platform specific support (e.g., errno) to get the detailed 1255 * error info. The JVM_GetLastErrorString procedure may also be used 1256 * to obtain a descriptive error string. 1257 */ 1258 #define JVM_IO_ERR (-1) 1259 1260 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO 1261 * operation has been disrupted by Thread.interrupt. There are a 1262 * number of technical difficulties related to interruptible IO that 1263 * need to be solved. For example, most existing programs do not handle 1264 * InterruptedIOExceptions specially, they simply treat those as any 1265 * IOExceptions, which typically indicate fatal errors. 1266 * 1267 * There are also two modes of operation for interruptible IO. In the 1268 * resumption mode, an interrupted IO operation is guaranteed not to 1269 * have any side-effects, and can be restarted. In the termination mode, 1270 * an interrupted IO operation corrupts the underlying IO stream, so 1271 * that the only reasonable operation on an interrupted stream is to 1272 * close that stream. The resumption mode seems to be impossible to 1273 * implement on Win32 and Solaris. Implementing the termination mode is 1274 * easier, but it's not clear that's the right semantics. 1275 * 1276 * Interruptible IO is not supported on Win32.It can be enabled/disabled 1277 * using a compile-time flag on Solaris. Third-party JVM ports do not 1278 * need to implement interruptible IO. 1279 */ 1280 #define JVM_IO_INTR (-2) 1281 1282 /* Write a string into the given buffer, in the platform's local encoding, 1283 * that describes the most recent system-level error to occur in this thread. 1284 * Return the length of the string or zero if no error occurred. 1285 */ 1286 JNIEXPORT jint JNICALL 1287 JVM_GetLastErrorString(char *buf, int len); 1288 1289 /* 1290 * Convert a pathname into native format. This function does syntactic 1291 * cleanup, such as removing redundant separator characters. It modifies 1292 * the given pathname string in place. 1293 */ 1294 JNIEXPORT char * JNICALL 1295 JVM_NativePath(char *); 1296 1297 /* 1298 * JVM I/O error codes 1299 */ 1300 #define JVM_EEXIST -100 1301 1302 /* 1303 * Open a file descriptor. This function returns a negative error code 1304 * on error, and a non-negative integer that is the file descriptor on 1305 * success. 1306 */ 1307 JNIEXPORT jint JNICALL 1308 JVM_Open(const char *fname, jint flags, jint mode); 1309 1310 /* 1311 * Close a file descriptor. This function returns -1 on error, and 0 1312 * on success. 1313 * 1314 * fd the file descriptor to close. 1315 */ 1316 JNIEXPORT jint JNICALL 1317 JVM_Close(jint fd); 1318 1319 /* 1320 * Read data from a file decriptor into a char array. 1321 * 1322 * fd the file descriptor to read from. 1323 * buf the buffer where to put the read data. 1324 * nbytes the number of bytes to read. 1325 * 1326 * This function returns -1 on error, and 0 on success. 1327 */ 1328 JNIEXPORT jint JNICALL 1329 JVM_Read(jint fd, char *buf, jint nbytes); 1330 1331 /* 1332 * Write data from a char array to a file decriptor. 1333 * 1334 * fd the file descriptor to read from. 1335 * buf the buffer from which to fetch the data. 1336 * nbytes the number of bytes to write. 1337 * 1338 * This function returns -1 on error, and 0 on success. 1339 */ 1340 JNIEXPORT jint JNICALL 1341 JVM_Write(jint fd, char *buf, jint nbytes); 1342 1343 /* 1344 * Returns the number of bytes available for reading from a given file 1345 * descriptor 1346 */ 1347 JNIEXPORT jint JNICALL 1348 JVM_Available(jint fd, jlong *pbytes); 1349 1350 /* 1351 * Move the file descriptor pointer from whence by offset. 1352 * 1353 * fd the file descriptor to move. 1354 * offset the number of bytes to move it by. 1355 * whence the start from where to move it. 1356 * 1357 * This function returns the resulting pointer location. 1358 */ 1359 JNIEXPORT jlong JNICALL 1360 JVM_Lseek(jint fd, jlong offset, jint whence); 1361 1362 /* 1363 * Set the length of the file associated with the given descriptor to the given 1364 * length. If the new length is longer than the current length then the file 1365 * is extended; the contents of the extended portion are not defined. The 1366 * value of the file pointer is undefined after this procedure returns. 1367 */ 1368 JNIEXPORT jint JNICALL 1369 JVM_SetLength(jint fd, jlong length); 1370 1371 /* 1372 * Synchronize the file descriptor's in memory state with that of the 1373 * physical device. Return of -1 is an error, 0 is OK. 1374 */ 1375 JNIEXPORT jint JNICALL 1376 JVM_Sync(jint fd); 1377 1378 /* 1379 * Networking library support 1380 */ 1381 1382 JNIEXPORT jint JNICALL 1383 JVM_InitializeSocketLibrary(void); 1384 1385 struct sockaddr; 1386 1387 JNIEXPORT jint JNICALL 1388 JVM_Socket(jint domain, jint type, jint protocol); 1389 1390 JNIEXPORT jint JNICALL 1391 JVM_SocketClose(jint fd); 1392 1393 JNIEXPORT jint JNICALL 1394 JVM_SocketShutdown(jint fd, jint howto); 1395 1396 JNIEXPORT jint JNICALL 1397 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags); 1398 1399 JNIEXPORT jint JNICALL 1400 JVM_Send(jint fd, char *buf, jint nBytes, jint flags); 1401 1402 JNIEXPORT jint JNICALL 1403 JVM_Timeout(int fd, long timeout); 1404 1405 JNIEXPORT jint JNICALL 1406 JVM_Listen(jint fd, jint count); 1407 1408 JNIEXPORT jint JNICALL 1409 JVM_Connect(jint fd, struct sockaddr *him, jint len); 1410 1411 JNIEXPORT jint JNICALL 1412 JVM_Bind(jint fd, struct sockaddr *him, jint len); 1413 1414 JNIEXPORT jint JNICALL 1415 JVM_Accept(jint fd, struct sockaddr *him, jint *len); 1416 1417 JNIEXPORT jint JNICALL 1418 JVM_RecvFrom(jint fd, char *buf, int nBytes, 1419 int flags, struct sockaddr *from, int *fromlen); 1420 1421 JNIEXPORT jint JNICALL 1422 JVM_SendTo(jint fd, char *buf, int len, 1423 int flags, struct sockaddr *to, int tolen); 1424 1425 JNIEXPORT jint JNICALL 1426 JVM_SocketAvailable(jint fd, jint *result); 1427 1428 1429 JNIEXPORT jint JNICALL 1430 JVM_GetSockName(jint fd, struct sockaddr *him, int *len); 1431 1432 JNIEXPORT jint JNICALL 1433 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen); 1434 1435 JNIEXPORT jint JNICALL 1436 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen); 1437 1438 JNIEXPORT int JNICALL 1439 JVM_GetHostName(char* name, int namelen); 1440 1441 /* 1442 * The standard printing functions supported by the Java VM. (Should they 1443 * be renamed to JVM_* in the future? 1444 */ 1445 1446 /* 1447 * BE CAREFUL! The following functions do not implement the 1448 * full feature set of standard C printf formats. 1449 */ 1450 JNIEXPORT int 1451 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1452 1453 JNIEXPORT int 1454 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1455 1456 JNIEXPORT int 1457 jio_fprintf(FILE *, const char *fmt, ...); 1458 1459 JNIEXPORT int 1460 jio_vfprintf(FILE *, const char *fmt, va_list args); 1461 1462 1463 JNIEXPORT void * JNICALL 1464 JVM_RawMonitorCreate(void); 1465 1466 JNIEXPORT void JNICALL 1467 JVM_RawMonitorDestroy(void *mon); 1468 1469 JNIEXPORT jint JNICALL 1470 JVM_RawMonitorEnter(void *mon); 1471 1472 JNIEXPORT void JNICALL 1473 JVM_RawMonitorExit(void *mon); 1474 1475 /* 1476 * java.lang.reflect.Method 1477 */ 1478 JNIEXPORT jobject JNICALL 1479 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 1480 1481 /* 1482 * java.lang.reflect.Constructor 1483 */ 1484 JNIEXPORT jobject JNICALL 1485 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 1486 1487 /* 1488 * java.lang.management support 1489 */ 1490 JNIEXPORT void* JNICALL 1491 JVM_GetManagement(jint version); 1492 1493 /* 1494 * com.sun.tools.attach.VirtualMachine support 1495 * 1496 * Initialize the agent properties with the properties maintained in the VM. 1497 */ 1498 JNIEXPORT jobject JNICALL 1499 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1500 1501 JNIEXPORT jstring JNICALL 1502 JVM_GetTemporaryDirectory(JNIEnv *env); 1503 1504 /* Generics reflection support. 1505 * 1506 * Returns information about the given class's EnclosingMethod 1507 * attribute, if present, or null if the class had no enclosing 1508 * method. 1509 * 1510 * If non-null, the returned array contains three elements. Element 0 1511 * is the java.lang.Class of which the enclosing method is a member, 1512 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1513 * method's name and descriptor, respectively. 1514 */ 1515 JNIEXPORT jobjectArray JNICALL 1516 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1517 1518 /* 1519 * Java thread state support 1520 */ 1521 enum { 1522 JAVA_THREAD_STATE_NEW = 0, 1523 JAVA_THREAD_STATE_RUNNABLE = 1, 1524 JAVA_THREAD_STATE_BLOCKED = 2, 1525 JAVA_THREAD_STATE_WAITING = 3, 1526 JAVA_THREAD_STATE_TIMED_WAITING = 4, 1527 JAVA_THREAD_STATE_TERMINATED = 5, 1528 JAVA_THREAD_STATE_COUNT = 6 1529 }; 1530 1531 /* 1532 * Returns an array of the threadStatus values representing the 1533 * given Java thread state. Returns NULL if the VM version is 1534 * incompatible with the JDK or doesn't support the given 1535 * Java thread state. 1536 */ 1537 JNIEXPORT jintArray JNICALL 1538 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState); 1539 1540 /* 1541 * Returns an array of the substate names representing the 1542 * given Java thread state. Returns NULL if the VM version is 1543 * incompatible with the JDK or the VM doesn't support 1544 * the given Java thread state. 1545 * values must be the jintArray returned from JVM_GetThreadStateValues 1546 * and javaThreadState. 1547 */ 1548 JNIEXPORT jobjectArray JNICALL 1549 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values); 1550 1551 /* ========================================================================= 1552 * The following defines a private JVM interface that the JDK can query 1553 * for the JVM version and capabilities. sun.misc.Version defines 1554 * the methods for getting the VM version and its capabilities. 1555 * 1556 * When a new bit is added, the following should be updated to provide 1557 * access to the new capability: 1558 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1559 * SDK: Version class 1560 * 1561 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1562 * JVM to query for the JDK version and capabilities. 1563 * 1564 * When a new bit is added, the following should be updated to provide 1565 * access to the new capability: 1566 * HS: JDK_Version class 1567 * SDK: JDK_GetVersionInfo0 1568 * 1569 * ========================================================================== 1570 */ 1571 typedef struct { 1572 /* HotSpot Express VM version string: 1573 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>] 1574 */ 1575 unsigned int jvm_version; /* Consists of major.minor.0.build */ 1576 unsigned int update_version : 8; /* 0 in HotSpot Express VM */ 1577 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */ 1578 unsigned int reserved1 : 16; 1579 unsigned int reserved2; 1580 1581 /* The following bits represents JVM supports that JDK has dependency on. 1582 * JDK can use these bits to determine which JVM version 1583 * and support it has to maintain runtime compatibility. 1584 * 1585 * When a new bit is added in a minor or update release, make sure 1586 * the new bit is also added in the main/baseline. 1587 */ 1588 unsigned int is_attachable : 1; 1589 unsigned int : 31; 1590 unsigned int : 32; 1591 unsigned int : 32; 1592 } jvm_version_info; 1593 1594 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1595 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1596 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp). 1597 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1598 /* Build number is available in all HotSpot Express VM builds. 1599 * It is defined in make/hotspot_version file. 1600 */ 1601 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1602 1603 JNIEXPORT void JNICALL 1604 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1605 1606 typedef struct { 1607 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx 1608 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */ 1609 /* and build number (xx) */ 1610 unsigned int update_version : 8; /* Update release version (uu) */ 1611 unsigned int special_update_version : 8; /* Special update release version (c)*/ 1612 unsigned int reserved1 : 16; 1613 unsigned int reserved2; 1614 1615 /* The following bits represents new JDK supports that VM has dependency on. 1616 * VM implementation can use these bits to determine which JDK version 1617 * and support it has to maintain runtime compatibility. 1618 * 1619 * When a new bit is added in a minor or update release, make sure 1620 * the new bit is also added in the main/baseline. 1621 */ 1622 unsigned int thread_park_blocker : 1; 1623 unsigned int post_vm_init_hook_enabled : 1; 1624 unsigned int pending_list_uses_discovered_field : 1; 1625 unsigned int : 29; 1626 unsigned int : 32; 1627 unsigned int : 32; 1628 } jdk_version_info; 1629 1630 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1631 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1632 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1633 1634 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN) 1635 * It will be zero for internal builds. 1636 */ 1637 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1638 1639 /* 1640 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1641 * that is dynamically looked up by JVM. 1642 */ 1643 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1644 1645 /* 1646 * This structure is used by the launcher to get the default thread 1647 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1648 * version of 1.1. As it is not supported otherwise, it has been removed 1649 * from jni.h 1650 */ 1651 typedef struct JDK1_1InitArgs { 1652 jint version; 1653 1654 char **properties; 1655 jint checkSource; 1656 jint nativeStackSize; 1657 jint javaStackSize; 1658 jint minHeapSize; 1659 jint maxHeapSize; 1660 jint verifyMode; 1661 char *classpath; 1662 1663 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1664 void (JNICALL *exit)(jint code); 1665 void (JNICALL *abort)(void); 1666 1667 jint enableClassGC; 1668 jint enableVerboseGC; 1669 jint disableAsyncGC; 1670 jint verbose; 1671 jboolean debugging; 1672 jint debugPort; 1673 } JDK1_1InitArgs; 1674 1675 #ifdef __cplusplus 1676 } /* extern "C" */ 1677 #endif /* __cplusplus */ 1678 1679 #endif /* !_JAVASOFT_JVM_H_ */ 1680 1681 #endif // SHARE_VM_PRIMS_JVM_H