1 /* 2 * Copyright (c) 1997, 2010, 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 #include "runtime/reflectionCompat.hpp" 30 #include "utilities/globalDefinitions.hpp" 31 #ifdef TARGET_OS_FAMILY_linux 32 # include "jvm_linux.h" 33 #endif 34 #ifdef TARGET_OS_FAMILY_solaris 35 # include "jvm_solaris.h" 36 #endif 37 #ifdef TARGET_OS_FAMILY_windows 38 # include "jvm_windows.h" 39 #endif 40 41 #ifndef _JAVASOFT_JVM_H_ 42 #define _JAVASOFT_JVM_H_ 43 44 // HotSpot integration note: 45 // 46 // This file and jvm.h used with the JDK are identical, 47 // except for the three includes removed below and the 48 // SUPPORT_OLD_REFLECTION sections cut out of the JDK's jvm.h. 49 50 // #include <sys/stat.h> 51 // #include "jni.h" 52 // #include "jvm_md.h" 53 54 55 #ifdef __cplusplus 56 extern "C" { 57 #endif 58 59 /* 60 * This file contains additional functions exported from the VM. 61 * These functions are complementary to the standard JNI support. 62 * There are three parts to this file: 63 * 64 * First, this file contains the VM-related functions needed by native 65 * libraries in the standard Java API. For example, the java.lang.Object 66 * class needs VM-level functions that wait for and notify monitors. 67 * 68 * Second, this file contains the functions and constant definitions 69 * needed by the byte code verifier and class file format checker. 70 * These functions allow the verifier and format checker to be written 71 * in a VM-independent way. 72 * 73 * Third, this file contains various I/O and nerwork operations needed 74 * by the standard Java I/O and network APIs. 75 */ 76 77 /* 78 * Bump the version number when either of the following happens: 79 * 80 * 1. There is a change in JVM_* functions. 81 * 82 * 2. There is a change in the contract between VM and Java classes. 83 * For example, if the VM relies on a new private field in Thread 84 * class. 85 */ 86 87 #define JVM_INTERFACE_VERSION 4 88 89 90 JNIEXPORT jint JNICALL 91 JVM_GetInterfaceVersion(void); 92 93 /************************************************************************* 94 PART 1: Functions for Native Libraries 95 ************************************************************************/ 96 /* 97 * java.lang.Object 98 */ 99 JNIEXPORT jint JNICALL 100 JVM_IHashCode(JNIEnv *env, jobject obj); 101 102 JNIEXPORT void JNICALL 103 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms); 104 105 JNIEXPORT void JNICALL 106 JVM_MonitorNotify(JNIEnv *env, jobject obj); 107 108 JNIEXPORT void JNICALL 109 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj); 110 111 JNIEXPORT jobject JNICALL 112 JVM_Clone(JNIEnv *env, jobject obj); 113 114 /* 115 * java.lang.String 116 */ 117 JNIEXPORT jstring JNICALL 118 JVM_InternString(JNIEnv *env, jstring str); 119 120 /* 121 * java.lang.System 122 */ 123 JNIEXPORT jlong JNICALL 124 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored); 125 126 JNIEXPORT jlong JNICALL 127 JVM_NanoTime(JNIEnv *env, jclass ignored); 128 129 JNIEXPORT void JNICALL 130 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, 131 jobject dst, jint dst_pos, jint length); 132 133 JNIEXPORT jobject JNICALL 134 JVM_InitProperties(JNIEnv *env, jobject p); 135 136 /* 137 * java.io.File 138 */ 139 JNIEXPORT void JNICALL 140 JVM_OnExit(void (*func)(void)); 141 142 /* 143 * java.lang.Runtime 144 */ 145 JNIEXPORT void JNICALL 146 JVM_Exit(jint code); 147 148 JNIEXPORT void JNICALL 149 JVM_Halt(jint code); 150 151 JNIEXPORT void JNICALL 152 JVM_GC(void); 153 154 /* Returns the number of real-time milliseconds that have elapsed since the 155 * least-recently-inspected heap object was last inspected by the garbage 156 * collector. 157 * 158 * For simple stop-the-world collectors this value is just the time 159 * since the most recent collection. For generational collectors it is the 160 * time since the oldest generation was most recently collected. Other 161 * collectors are free to return a pessimistic estimate of the elapsed time, or 162 * simply the time since the last full collection was performed. 163 * 164 * Note that in the presence of reference objects, a given object that is no 165 * longer strongly reachable may have to be inspected multiple times before it 166 * can be reclaimed. 167 */ 168 JNIEXPORT jlong JNICALL 169 JVM_MaxObjectInspectionAge(void); 170 171 JNIEXPORT void JNICALL 172 JVM_TraceInstructions(jboolean on); 173 174 JNIEXPORT void JNICALL 175 JVM_TraceMethodCalls(jboolean on); 176 177 JNIEXPORT jlong JNICALL 178 JVM_TotalMemory(void); 179 180 JNIEXPORT jlong JNICALL 181 JVM_FreeMemory(void); 182 183 JNIEXPORT jlong JNICALL 184 JVM_MaxMemory(void); 185 186 JNIEXPORT jint JNICALL 187 JVM_ActiveProcessorCount(void); 188 189 JNIEXPORT void * JNICALL 190 JVM_LoadLibrary(const char *name); 191 192 JNIEXPORT void JNICALL 193 JVM_UnloadLibrary(void * handle); 194 195 JNIEXPORT void * JNICALL 196 JVM_FindLibraryEntry(void *handle, const char *name); 197 198 JNIEXPORT jboolean JNICALL 199 JVM_IsSupportedJNIVersion(jint version); 200 201 /* 202 * java.lang.Float and java.lang.Double 203 */ 204 JNIEXPORT jboolean JNICALL 205 JVM_IsNaN(jdouble d); 206 207 /* 208 * java.lang.Throwable 209 */ 210 JNIEXPORT void JNICALL 211 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 212 213 JNIEXPORT void JNICALL 214 JVM_PrintStackTrace(JNIEnv *env, jobject throwable, jobject printable); 215 216 JNIEXPORT jint JNICALL 217 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable); 218 219 JNIEXPORT jobject JNICALL 220 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index); 221 222 /* 223 * java.lang.Compiler 224 */ 225 JNIEXPORT void JNICALL 226 JVM_InitializeCompiler (JNIEnv *env, jclass compCls); 227 228 JNIEXPORT jboolean JNICALL 229 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls); 230 231 JNIEXPORT jboolean JNICALL 232 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls); 233 234 JNIEXPORT jboolean JNICALL 235 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname); 236 237 JNIEXPORT jobject JNICALL 238 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg); 239 240 JNIEXPORT void JNICALL 241 JVM_EnableCompiler(JNIEnv *env, jclass compCls); 242 243 JNIEXPORT void JNICALL 244 JVM_DisableCompiler(JNIEnv *env, jclass compCls); 245 246 /* 247 * java.lang.Thread 248 */ 249 JNIEXPORT void JNICALL 250 JVM_StartThread(JNIEnv *env, jobject thread); 251 252 JNIEXPORT void JNICALL 253 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 254 255 JNIEXPORT jboolean JNICALL 256 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 257 258 JNIEXPORT void JNICALL 259 JVM_SuspendThread(JNIEnv *env, jobject thread); 260 261 JNIEXPORT void JNICALL 262 JVM_ResumeThread(JNIEnv *env, jobject thread); 263 264 JNIEXPORT void JNICALL 265 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 266 267 JNIEXPORT void JNICALL 268 JVM_Yield(JNIEnv *env, jclass threadClass); 269 270 JNIEXPORT void JNICALL 271 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 272 273 JNIEXPORT jobject JNICALL 274 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 275 276 JNIEXPORT jint JNICALL 277 JVM_CountStackFrames(JNIEnv *env, jobject thread); 278 279 JNIEXPORT void JNICALL 280 JVM_Interrupt(JNIEnv *env, jobject thread); 281 282 JNIEXPORT jboolean JNICALL 283 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 284 285 JNIEXPORT jboolean JNICALL 286 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 287 288 JNIEXPORT void JNICALL 289 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 290 291 JNIEXPORT jobjectArray JNICALL 292 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 293 294 /* getStackTrace() and getAllStackTraces() method */ 295 JNIEXPORT jobjectArray JNICALL 296 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 297 298 /* 299 * java.lang.SecurityManager 300 */ 301 JNIEXPORT jclass JNICALL 302 JVM_CurrentLoadedClass(JNIEnv *env); 303 304 JNIEXPORT jobject JNICALL 305 JVM_CurrentClassLoader(JNIEnv *env); 306 307 JNIEXPORT jobjectArray JNICALL 308 JVM_GetClassContext(JNIEnv *env); 309 310 JNIEXPORT jint JNICALL 311 JVM_ClassDepth(JNIEnv *env, jstring name); 312 313 JNIEXPORT jint JNICALL 314 JVM_ClassLoaderDepth(JNIEnv *env); 315 316 /* 317 * java.lang.Package 318 */ 319 JNIEXPORT jstring JNICALL 320 JVM_GetSystemPackage(JNIEnv *env, jstring name); 321 322 JNIEXPORT jobjectArray JNICALL 323 JVM_GetSystemPackages(JNIEnv *env); 324 325 /* 326 * java.io.ObjectInputStream 327 */ 328 JNIEXPORT jobject JNICALL 329 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass, 330 jclass initClass); 331 332 JNIEXPORT jobject JNICALL 333 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, 334 jint length); 335 336 JNIEXPORT jobject JNICALL 337 JVM_LatestUserDefinedLoader(JNIEnv *env); 338 339 /* 340 * This function has been deprecated and should not be considered 341 * part of the specified JVM interface. 342 */ 343 JNIEXPORT jclass JNICALL 344 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass, 345 jstring currClassName); 346 347 /* 348 * java.lang.reflect.Array 349 */ 350 JNIEXPORT jint JNICALL 351 JVM_GetArrayLength(JNIEnv *env, jobject arr); 352 353 JNIEXPORT jobject JNICALL 354 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 355 356 JNIEXPORT jvalue JNICALL 357 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 358 359 JNIEXPORT void JNICALL 360 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 361 362 JNIEXPORT void JNICALL 363 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 364 unsigned char vCode); 365 366 JNIEXPORT jobject JNICALL 367 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 368 369 JNIEXPORT jobject JNICALL 370 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 371 372 /* 373 * java.lang.Class and java.lang.ClassLoader 374 */ 375 /* 376 * Returns the class in which the code invoking the native method 377 * belongs. 378 * 379 * Note that in JDK 1.1, native methods did not create a frame. 380 * In 1.2, they do. Therefore native methods like Class.forName 381 * can no longer look at the current frame for the caller class. 382 */ 383 JNIEXPORT jclass JNICALL 384 JVM_GetCallerClass(JNIEnv *env, int n); 385 386 /* 387 * Find primitive classes 388 * utf: class name 389 */ 390 JNIEXPORT jclass JNICALL 391 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 392 393 /* 394 * Link the class 395 */ 396 JNIEXPORT void JNICALL 397 JVM_ResolveClass(JNIEnv *env, jclass cls); 398 399 /* 400 * Find a class from a given class loader. Throw ClassNotFoundException 401 * or NoClassDefFoundError depending on the value of the last 402 * argument. 403 */ 404 JNIEXPORT jclass JNICALL 405 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init, 406 jobject loader, jboolean throwError); 407 408 /* 409 * Find a class from a boot class loader. Returns NULL if class not found. 410 */ 411 JNIEXPORT jclass JNICALL 412 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 413 414 /* 415 * Find a class from a given class. 416 */ 417 JNIEXPORT jclass JNICALL 418 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 419 jclass from); 420 421 /* Find a loaded class cached by the VM */ 422 JNIEXPORT jclass JNICALL 423 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 424 425 /* Define a class */ 426 JNIEXPORT jclass JNICALL 427 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 428 jsize len, jobject pd); 429 430 /* Define a class with a source (added in JDK1.5) */ 431 JNIEXPORT jclass JNICALL 432 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 433 const jbyte *buf, jsize len, jobject pd, 434 const char *source); 435 436 /* Define a class with a source with conditional verification (added HSX 14) 437 * -Xverify:all will verify anyway, -Xverify:none will not verify, 438 * -Xverify:remote (default) will obey this conditional 439 * i.e. true = should_verify_class 440 */ 441 JNIEXPORT jclass JNICALL 442 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, 443 jobject loader, const jbyte *buf, 444 jsize len, jobject pd, const char *source, 445 jboolean verify); 446 447 /* Define a class with a source (MLVM) */ 448 JNIEXPORT jclass JNICALL 449 JVM_DefineClassWithCP(JNIEnv *env, const char *name, jobject loader, 450 const jbyte *buf, jsize len, jobject pd, 451 const char *source, 452 // same args as JVM_DefineClassWithSource to this point 453 jobjectArray constants); 454 455 /* 456 * Reflection support functions 457 */ 458 459 JNIEXPORT jstring JNICALL 460 JVM_GetClassName(JNIEnv *env, jclass cls); 461 462 JNIEXPORT jobjectArray JNICALL 463 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 464 465 JNIEXPORT jobject JNICALL 466 JVM_GetClassLoader(JNIEnv *env, jclass cls); 467 468 JNIEXPORT jboolean JNICALL 469 JVM_IsInterface(JNIEnv *env, jclass cls); 470 471 JNIEXPORT jobjectArray JNICALL 472 JVM_GetClassSigners(JNIEnv *env, jclass cls); 473 474 JNIEXPORT void JNICALL 475 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 476 477 JNIEXPORT jobject JNICALL 478 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 479 480 JNIEXPORT void JNICALL 481 JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain); 482 483 JNIEXPORT jboolean JNICALL 484 JVM_IsArrayClass(JNIEnv *env, jclass cls); 485 486 JNIEXPORT jboolean JNICALL 487 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 488 489 JNIEXPORT jclass JNICALL 490 JVM_GetComponentType(JNIEnv *env, jclass cls); 491 492 JNIEXPORT jint JNICALL 493 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 494 495 JNIEXPORT jobjectArray JNICALL 496 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 497 498 JNIEXPORT jclass JNICALL 499 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 500 501 /* Generics support (JDK 1.5) */ 502 JNIEXPORT jstring JNICALL 503 JVM_GetClassSignature(JNIEnv *env, jclass cls); 504 505 /* Annotations support (JDK 1.5) */ 506 JNIEXPORT jbyteArray JNICALL 507 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 508 509 /* Annotations support (JDK 1.6) */ 510 511 // field is a handle to a java.lang.reflect.Field object 512 JNIEXPORT jbyteArray JNICALL 513 JVM_GetFieldAnnotations(JNIEnv *env, jobject field); 514 515 // method is a handle to a java.lang.reflect.Method object 516 JNIEXPORT jbyteArray JNICALL 517 JVM_GetMethodAnnotations(JNIEnv *env, jobject method); 518 519 // method is a handle to a java.lang.reflect.Method object 520 JNIEXPORT jbyteArray JNICALL 521 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method); 522 523 // method is a handle to a java.lang.reflect.Method object 524 JNIEXPORT jbyteArray JNICALL 525 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method); 526 527 528 /* 529 * New (JDK 1.4) reflection implementation 530 */ 531 532 JNIEXPORT jobjectArray JNICALL 533 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 534 535 JNIEXPORT jobjectArray JNICALL 536 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 537 538 JNIEXPORT jobjectArray JNICALL 539 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 540 541 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 542 This returns the access flags for the class as specified in the 543 class file rather than searching the InnerClasses attribute (if 544 present) to find the source-level access flags. Only the values of 545 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 546 valid. */ 547 JNIEXPORT jint JNICALL 548 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 549 550 /* 551 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 552 */ 553 554 JNIEXPORT jobject JNICALL 555 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 556 557 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 558 (JNIEnv *env, jobject unused, jobject jcpool); 559 560 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 561 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 562 563 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 564 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 565 566 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 567 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 568 569 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 570 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 571 572 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 573 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 574 575 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 576 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 577 578 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 579 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 580 581 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 582 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 583 584 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 585 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 586 587 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 588 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 589 590 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 591 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 592 593 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 594 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 595 596 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 597 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 598 599 /* 600 * java.security.* 601 */ 602 603 JNIEXPORT jobject JNICALL 604 JVM_DoPrivileged(JNIEnv *env, jclass cls, 605 jobject action, jobject context, jboolean wrapException); 606 607 JNIEXPORT jobject JNICALL 608 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 609 610 JNIEXPORT jobject JNICALL 611 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 612 613 /* 614 * Signal support, used to implement the shutdown sequence. Every VM must 615 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 616 * (^C) and the latter for external termination (kill, system shutdown, etc.). 617 * Other platform-dependent signal values may also be supported. 618 */ 619 620 JNIEXPORT void * JNICALL 621 JVM_RegisterSignal(jint sig, void *handler); 622 623 JNIEXPORT jboolean JNICALL 624 JVM_RaiseSignal(jint sig); 625 626 JNIEXPORT jint JNICALL 627 JVM_FindSignal(const char *name); 628 629 /* 630 * Retrieve the assertion directives for the specified class. 631 */ 632 JNIEXPORT jboolean JNICALL 633 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 634 635 /* 636 * Retrieve the assertion directives from the VM. 637 */ 638 JNIEXPORT jobject JNICALL 639 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 640 641 /* 642 * sun.misc.AtomicLong 643 */ 644 JNIEXPORT jboolean JNICALL 645 JVM_SupportsCX8(void); 646 647 JNIEXPORT jboolean JNICALL 648 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal); 649 650 /* 651 * com.sun.dtrace.jsdt support 652 */ 653 654 #define JVM_TRACING_DTRACE_VERSION 1 655 656 /* 657 * Structure to pass one probe description to JVM. 658 * 659 * The VM will overwrite the definition of the referenced method with 660 * code that will fire the probe. 661 */ 662 typedef struct { 663 jmethodID method; 664 jstring function; 665 jstring name; 666 void* reserved[4]; // for future use 667 } JVM_DTraceProbe; 668 669 /** 670 * Encapsulates the stability ratings for a DTrace provider field 671 */ 672 typedef struct { 673 jint nameStability; 674 jint dataStability; 675 jint dependencyClass; 676 } JVM_DTraceInterfaceAttributes; 677 678 /* 679 * Structure to pass one provider description to JVM 680 */ 681 typedef struct { 682 jstring name; 683 JVM_DTraceProbe* probes; 684 jint probe_count; 685 JVM_DTraceInterfaceAttributes providerAttributes; 686 JVM_DTraceInterfaceAttributes moduleAttributes; 687 JVM_DTraceInterfaceAttributes functionAttributes; 688 JVM_DTraceInterfaceAttributes nameAttributes; 689 JVM_DTraceInterfaceAttributes argsAttributes; 690 void* reserved[4]; // for future use 691 } JVM_DTraceProvider; 692 693 /* 694 * Get the version number the JVM was built with 695 */ 696 JNIEXPORT jint JNICALL 697 JVM_DTraceGetVersion(JNIEnv* env); 698 699 /* 700 * Register new probe with given signature, return global handle 701 * 702 * The version passed in is the version that the library code was 703 * built with. 704 */ 705 JNIEXPORT jlong JNICALL 706 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 707 jint providers_count, JVM_DTraceProvider* providers); 708 709 /* 710 * Check JSDT probe 711 */ 712 JNIEXPORT jboolean JNICALL 713 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 714 715 /* 716 * Destroy custom DOF 717 */ 718 JNIEXPORT void JNICALL 719 JVM_DTraceDispose(JNIEnv* env, jlong handle); 720 721 /* 722 * Check to see if DTrace is supported by OS 723 */ 724 JNIEXPORT jboolean JNICALL 725 JVM_DTraceIsSupported(JNIEnv* env); 726 727 /************************************************************************* 728 PART 2: Support for the Verifier and Class File Format Checker 729 ************************************************************************/ 730 /* 731 * Return the class name in UTF format. The result is valid 732 * until JVM_ReleaseUTf is called. 733 * 734 * The caller must treat the string as a constant and not modify it 735 * in any way. 736 */ 737 JNIEXPORT const char * JNICALL 738 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 739 740 /* 741 * Returns the constant pool types in the buffer provided by "types." 742 */ 743 JNIEXPORT void JNICALL 744 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 745 746 /* 747 * Returns the number of Constant Pool entries. 748 */ 749 JNIEXPORT jint JNICALL 750 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 751 752 /* 753 * Returns the number of *declared* fields or methods. 754 */ 755 JNIEXPORT jint JNICALL 756 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 757 758 JNIEXPORT jint JNICALL 759 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 760 761 /* 762 * Returns the CP indexes of exceptions raised by a given method. 763 * Places the result in the given buffer. 764 * 765 * The method is identified by method_index. 766 */ 767 JNIEXPORT void JNICALL 768 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 769 unsigned short *exceptions); 770 /* 771 * Returns the number of exceptions raised by a given method. 772 * The method is identified by method_index. 773 */ 774 JNIEXPORT jint JNICALL 775 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 776 777 /* 778 * Returns the byte code sequence of a given method. 779 * Places the result in the given buffer. 780 * 781 * The method is identified by method_index. 782 */ 783 JNIEXPORT void JNICALL 784 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 785 unsigned char *code); 786 787 /* 788 * Returns the length of the byte code sequence of a given method. 789 * The method is identified by method_index. 790 */ 791 JNIEXPORT jint JNICALL 792 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 793 794 /* 795 * A structure used to a capture exception table entry in a Java method. 796 */ 797 typedef struct { 798 jint start_pc; 799 jint end_pc; 800 jint handler_pc; 801 jint catchType; 802 } JVM_ExceptionTableEntryType; 803 804 /* 805 * Returns the exception table entry at entry_index of a given method. 806 * Places the result in the given buffer. 807 * 808 * The method is identified by method_index. 809 */ 810 JNIEXPORT void JNICALL 811 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 812 jint entry_index, 813 JVM_ExceptionTableEntryType *entry); 814 815 /* 816 * Returns the length of the exception table of a given method. 817 * The method is identified by method_index. 818 */ 819 JNIEXPORT jint JNICALL 820 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 821 822 /* 823 * Returns the modifiers of a given field. 824 * The field is identified by field_index. 825 */ 826 JNIEXPORT jint JNICALL 827 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 828 829 /* 830 * Returns the modifiers of a given method. 831 * The method is identified by method_index. 832 */ 833 JNIEXPORT jint JNICALL 834 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 835 836 /* 837 * Returns the number of local variables of a given method. 838 * The method is identified by method_index. 839 */ 840 JNIEXPORT jint JNICALL 841 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 842 843 /* 844 * Returns the number of arguments (including this pointer) of a given method. 845 * The method is identified by method_index. 846 */ 847 JNIEXPORT jint JNICALL 848 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 849 850 /* 851 * Returns the maximum amount of stack (in words) used by a given method. 852 * The method is identified by method_index. 853 */ 854 JNIEXPORT jint JNICALL 855 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 856 857 /* 858 * Is a given method a constructor. 859 * The method is identified by method_index. 860 */ 861 JNIEXPORT jboolean JNICALL 862 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 863 864 /* 865 * Returns the name of a given method in UTF format. 866 * The result remains valid until JVM_ReleaseUTF is called. 867 * 868 * The caller must treat the string as a constant and not modify it 869 * in any way. 870 */ 871 JNIEXPORT const char * JNICALL 872 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 873 874 /* 875 * Returns the signature of a given method in UTF format. 876 * The result remains valid until JVM_ReleaseUTF is called. 877 * 878 * The caller must treat the string as a constant and not modify it 879 * in any way. 880 */ 881 JNIEXPORT const char * JNICALL 882 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 883 884 /* 885 * Returns the name of the field refered to at a given constant pool 886 * index. 887 * 888 * The result is in UTF format and remains valid until JVM_ReleaseUTF 889 * is called. 890 * 891 * The caller must treat the string as a constant and not modify it 892 * in any way. 893 */ 894 JNIEXPORT const char * JNICALL 895 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 896 897 /* 898 * Returns the name of the method refered to at a given constant pool 899 * index. 900 * 901 * The result is in UTF format and remains valid until JVM_ReleaseUTF 902 * is called. 903 * 904 * The caller must treat the string as a constant and not modify it 905 * in any way. 906 */ 907 JNIEXPORT const char * JNICALL 908 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 909 910 /* 911 * Returns the signature of the method refered to at a given constant pool 912 * index. 913 * 914 * The result is in UTF format and remains valid until JVM_ReleaseUTF 915 * is called. 916 * 917 * The caller must treat the string as a constant and not modify it 918 * in any way. 919 */ 920 JNIEXPORT const char * JNICALL 921 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 922 923 /* 924 * Returns the signature of the field refered to at a given constant pool 925 * index. 926 * 927 * The result is in UTF format and remains valid until JVM_ReleaseUTF 928 * is called. 929 * 930 * The caller must treat the string as a constant and not modify it 931 * in any way. 932 */ 933 JNIEXPORT const char * JNICALL 934 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 935 936 /* 937 * Returns the class name refered to at a given constant pool index. 938 * 939 * The result is in UTF format and remains valid until JVM_ReleaseUTF 940 * is called. 941 * 942 * The caller must treat the string as a constant and not modify it 943 * in any way. 944 */ 945 JNIEXPORT const char * JNICALL 946 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 947 948 /* 949 * Returns the class name refered to at a given constant pool index. 950 * 951 * The constant pool entry must refer to a CONSTANT_Fieldref. 952 * 953 * The result is in UTF format and remains valid until JVM_ReleaseUTF 954 * is called. 955 * 956 * The caller must treat the string as a constant and not modify it 957 * in any way. 958 */ 959 JNIEXPORT const char * JNICALL 960 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 961 962 /* 963 * Returns the class name refered to at a given constant pool index. 964 * 965 * The constant pool entry must refer to CONSTANT_Methodref or 966 * CONSTANT_InterfaceMethodref. 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_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 976 977 /* 978 * Returns the modifiers of a field in calledClass. The field is 979 * referred to in class cb at constant pool entry index. 980 * 981 * The caller must treat the string as a constant and not modify it 982 * in any way. 983 * 984 * Returns -1 if the field does not exist in calledClass. 985 */ 986 JNIEXPORT jint JNICALL 987 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 988 989 /* 990 * Returns the modifiers of a method in calledClass. The method is 991 * referred to in class cb at constant pool entry index. 992 * 993 * Returns -1 if the method does not exist in calledClass. 994 */ 995 JNIEXPORT jint JNICALL 996 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 997 998 /* 999 * Releases the UTF string obtained from the VM. 1000 */ 1001 JNIEXPORT void JNICALL 1002 JVM_ReleaseUTF(const char *utf); 1003 1004 /* 1005 * Compare if two classes are in the same package. 1006 */ 1007 JNIEXPORT jboolean JNICALL 1008 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 1009 1010 /* Constants in class files */ 1011 1012 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */ 1013 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */ 1014 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */ 1015 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */ 1016 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */ 1017 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */ 1018 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */ 1019 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */ 1020 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */ 1021 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */ 1022 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */ 1023 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */ 1024 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */ 1025 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */ 1026 #define JVM_ACC_STRICT 0x0800 /* strict floating point */ 1027 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */ 1028 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */ 1029 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */ 1030 1031 #define JVM_ACC_PUBLIC_BIT 0 1032 #define JVM_ACC_PRIVATE_BIT 1 1033 #define JVM_ACC_PROTECTED_BIT 2 1034 #define JVM_ACC_STATIC_BIT 3 1035 #define JVM_ACC_FINAL_BIT 4 1036 #define JVM_ACC_SYNCHRONIZED_BIT 5 1037 #define JVM_ACC_SUPER_BIT 5 1038 #define JVM_ACC_VOLATILE_BIT 6 1039 #define JVM_ACC_BRIDGE_BIT 6 1040 #define JVM_ACC_TRANSIENT_BIT 7 1041 #define JVM_ACC_VARARGS_BIT 7 1042 #define JVM_ACC_NATIVE_BIT 8 1043 #define JVM_ACC_INTERFACE_BIT 9 1044 #define JVM_ACC_ABSTRACT_BIT 10 1045 #define JVM_ACC_STRICT_BIT 11 1046 #define JVM_ACC_SYNTHETIC_BIT 12 1047 #define JVM_ACC_ANNOTATION_BIT 13 1048 #define JVM_ACC_ENUM_BIT 14 1049 1050 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java 1051 enum { 1052 JVM_CONSTANT_Utf8 = 1, 1053 JVM_CONSTANT_Unicode, /* unused */ 1054 JVM_CONSTANT_Integer, 1055 JVM_CONSTANT_Float, 1056 JVM_CONSTANT_Long, 1057 JVM_CONSTANT_Double, 1058 JVM_CONSTANT_Class, 1059 JVM_CONSTANT_String, 1060 JVM_CONSTANT_Fieldref, 1061 JVM_CONSTANT_Methodref, 1062 JVM_CONSTANT_InterfaceMethodref, 1063 JVM_CONSTANT_NameAndType, 1064 JVM_CONSTANT_MethodHandle = 15, // JSR 292 1065 JVM_CONSTANT_MethodType = 16, // JSR 292 1066 JVM_CONSTANT_InvokeDynamic = 17 // JSR 292 1067 }; 1068 1069 /* JVM_CONSTANT_MethodHandle subtypes */ 1070 enum { 1071 JVM_REF_getField = 1, 1072 JVM_REF_getStatic = 2, 1073 JVM_REF_putField = 3, 1074 JVM_REF_putStatic = 4, 1075 JVM_REF_invokeVirtual = 5, 1076 JVM_REF_invokeStatic = 6, 1077 JVM_REF_invokeSpecial = 7, 1078 JVM_REF_newInvokeSpecial = 8, 1079 JVM_REF_invokeInterface = 9 1080 }; 1081 1082 /* Used in the newarray instruction. */ 1083 1084 #define JVM_T_BOOLEAN 4 1085 #define JVM_T_CHAR 5 1086 #define JVM_T_FLOAT 6 1087 #define JVM_T_DOUBLE 7 1088 #define JVM_T_BYTE 8 1089 #define JVM_T_SHORT 9 1090 #define JVM_T_INT 10 1091 #define JVM_T_LONG 11 1092 1093 /* JVM method signatures */ 1094 1095 #define JVM_SIGNATURE_ARRAY '[' 1096 #define JVM_SIGNATURE_BYTE 'B' 1097 #define JVM_SIGNATURE_CHAR 'C' 1098 #define JVM_SIGNATURE_CLASS 'L' 1099 #define JVM_SIGNATURE_ENDCLASS ';' 1100 #define JVM_SIGNATURE_ENUM 'E' 1101 #define JVM_SIGNATURE_FLOAT 'F' 1102 #define JVM_SIGNATURE_DOUBLE 'D' 1103 #define JVM_SIGNATURE_FUNC '(' 1104 #define JVM_SIGNATURE_ENDFUNC ')' 1105 #define JVM_SIGNATURE_INT 'I' 1106 #define JVM_SIGNATURE_LONG 'J' 1107 #define JVM_SIGNATURE_SHORT 'S' 1108 #define JVM_SIGNATURE_VOID 'V' 1109 #define JVM_SIGNATURE_BOOLEAN 'Z' 1110 1111 /* 1112 * A function defined by the byte-code verifier and called by the VM. 1113 * This is not a function implemented in the VM. 1114 * 1115 * Returns JNI_FALSE if verification fails. A detailed error message 1116 * will be places in msg_buf, whose length is specified by buf_len. 1117 */ 1118 typedef jboolean (*verifier_fn_t)(JNIEnv *env, 1119 jclass cb, 1120 char * msg_buf, 1121 jint buf_len); 1122 1123 1124 /* 1125 * Support for a VM-independent class format checker. 1126 */ 1127 typedef struct { 1128 unsigned long code; /* byte code */ 1129 unsigned long excs; /* exceptions */ 1130 unsigned long etab; /* catch table */ 1131 unsigned long lnum; /* line number */ 1132 unsigned long lvar; /* local vars */ 1133 } method_size_info; 1134 1135 typedef struct { 1136 unsigned int constants; /* constant pool */ 1137 unsigned int fields; 1138 unsigned int methods; 1139 unsigned int interfaces; 1140 unsigned int fields2; /* number of static 2-word fields */ 1141 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1142 1143 method_size_info clinit; /* memory used in clinit */ 1144 method_size_info main; /* used everywhere else */ 1145 } class_size_info; 1146 1147 /* 1148 * Functions defined in libjava.so to perform string conversions. 1149 * 1150 */ 1151 1152 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1153 1154 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b); 1155 1156 /* This is the function defined in libjava.so that performs class 1157 * format checks. This functions fills in size information about 1158 * the class file and returns: 1159 * 1160 * 0: good 1161 * -1: out of memory 1162 * -2: bad format 1163 * -3: unsupported version 1164 * -4: bad class name 1165 */ 1166 1167 typedef jint (*check_format_fn_t)(char *class_name, 1168 unsigned char *data, 1169 unsigned int data_size, 1170 class_size_info *class_size, 1171 char *message_buffer, 1172 jint buffer_length, 1173 jboolean measure_only, 1174 jboolean check_relaxed); 1175 1176 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1177 JVM_ACC_FINAL | \ 1178 JVM_ACC_SUPER | \ 1179 JVM_ACC_INTERFACE | \ 1180 JVM_ACC_ABSTRACT | \ 1181 JVM_ACC_ANNOTATION | \ 1182 JVM_ACC_ENUM | \ 1183 JVM_ACC_SYNTHETIC) 1184 1185 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1186 JVM_ACC_PRIVATE | \ 1187 JVM_ACC_PROTECTED | \ 1188 JVM_ACC_STATIC | \ 1189 JVM_ACC_FINAL | \ 1190 JVM_ACC_VOLATILE | \ 1191 JVM_ACC_TRANSIENT | \ 1192 JVM_ACC_ENUM | \ 1193 JVM_ACC_SYNTHETIC) 1194 1195 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1196 JVM_ACC_PRIVATE | \ 1197 JVM_ACC_PROTECTED | \ 1198 JVM_ACC_STATIC | \ 1199 JVM_ACC_FINAL | \ 1200 JVM_ACC_SYNCHRONIZED | \ 1201 JVM_ACC_BRIDGE | \ 1202 JVM_ACC_VARARGS | \ 1203 JVM_ACC_NATIVE | \ 1204 JVM_ACC_ABSTRACT | \ 1205 JVM_ACC_STRICT | \ 1206 JVM_ACC_SYNTHETIC) 1207 1208 /* 1209 * This is the function defined in libjava.so to perform path 1210 * canonicalization. VM call this function before opening jar files 1211 * to load system classes. 1212 * 1213 */ 1214 1215 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1216 1217 /************************************************************************* 1218 PART 3: I/O and Network Support 1219 ************************************************************************/ 1220 1221 /* Note that the JVM IO functions are expected to return JVM_IO_ERR 1222 * when there is any kind of error. The caller can then use the 1223 * platform specific support (e.g., errno) to get the detailed 1224 * error info. The JVM_GetLastErrorString procedure may also be used 1225 * to obtain a descriptive error string. 1226 */ 1227 #define JVM_IO_ERR (-1) 1228 1229 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO 1230 * operation has been disrupted by Thread.interrupt. There are a 1231 * number of technical difficulties related to interruptible IO that 1232 * need to be solved. For example, most existing programs do not handle 1233 * InterruptedIOExceptions specially, they simply treat those as any 1234 * IOExceptions, which typically indicate fatal errors. 1235 * 1236 * There are also two modes of operation for interruptible IO. In the 1237 * resumption mode, an interrupted IO operation is guaranteed not to 1238 * have any side-effects, and can be restarted. In the termination mode, 1239 * an interrupted IO operation corrupts the underlying IO stream, so 1240 * that the only reasonable operation on an interrupted stream is to 1241 * close that stream. The resumption mode seems to be impossible to 1242 * implement on Win32 and Solaris. Implementing the termination mode is 1243 * easier, but it's not clear that's the right semantics. 1244 * 1245 * Interruptible IO is not supported on Win32.It can be enabled/disabled 1246 * using a compile-time flag on Solaris. Third-party JVM ports do not 1247 * need to implement interruptible IO. 1248 */ 1249 #define JVM_IO_INTR (-2) 1250 1251 /* Write a string into the given buffer, in the platform's local encoding, 1252 * that describes the most recent system-level error to occur in this thread. 1253 * Return the length of the string or zero if no error occurred. 1254 */ 1255 JNIEXPORT jint JNICALL 1256 JVM_GetLastErrorString(char *buf, int len); 1257 1258 /* 1259 * Convert a pathname into native format. This function does syntactic 1260 * cleanup, such as removing redundant separator characters. It modifies 1261 * the given pathname string in place. 1262 */ 1263 JNIEXPORT char * JNICALL 1264 JVM_NativePath(char *); 1265 1266 /* 1267 * JVM I/O error codes 1268 */ 1269 #define JVM_EEXIST -100 1270 1271 /* 1272 * Open a file descriptor. This function returns a negative error code 1273 * on error, and a non-negative integer that is the file descriptor on 1274 * success. 1275 */ 1276 JNIEXPORT jint JNICALL 1277 JVM_Open(const char *fname, jint flags, jint mode); 1278 1279 /* 1280 * Close a file descriptor. This function returns -1 on error, and 0 1281 * on success. 1282 * 1283 * fd the file descriptor to close. 1284 */ 1285 JNIEXPORT jint JNICALL 1286 JVM_Close(jint fd); 1287 1288 /* 1289 * Read data from a file decriptor into a char array. 1290 * 1291 * fd the file descriptor to read from. 1292 * buf the buffer where to put the read data. 1293 * nbytes the number of bytes to read. 1294 * 1295 * This function returns -1 on error, and 0 on success. 1296 */ 1297 JNIEXPORT jint JNICALL 1298 JVM_Read(jint fd, char *buf, jint nbytes); 1299 1300 /* 1301 * Write data from a char array to a file decriptor. 1302 * 1303 * fd the file descriptor to read from. 1304 * buf the buffer from which to fetch the data. 1305 * nbytes the number of bytes to write. 1306 * 1307 * This function returns -1 on error, and 0 on success. 1308 */ 1309 JNIEXPORT jint JNICALL 1310 JVM_Write(jint fd, char *buf, jint nbytes); 1311 1312 /* 1313 * Returns the number of bytes available for reading from a given file 1314 * descriptor 1315 */ 1316 JNIEXPORT jint JNICALL 1317 JVM_Available(jint fd, jlong *pbytes); 1318 1319 /* 1320 * Move the file descriptor pointer from whence by offset. 1321 * 1322 * fd the file descriptor to move. 1323 * offset the number of bytes to move it by. 1324 * whence the start from where to move it. 1325 * 1326 * This function returns the resulting pointer location. 1327 */ 1328 JNIEXPORT jlong JNICALL 1329 JVM_Lseek(jint fd, jlong offset, jint whence); 1330 1331 /* 1332 * Set the length of the file associated with the given descriptor to the given 1333 * length. If the new length is longer than the current length then the file 1334 * is extended; the contents of the extended portion are not defined. The 1335 * value of the file pointer is undefined after this procedure returns. 1336 */ 1337 JNIEXPORT jint JNICALL 1338 JVM_SetLength(jint fd, jlong length); 1339 1340 /* 1341 * Synchronize the file descriptor's in memory state with that of the 1342 * physical device. Return of -1 is an error, 0 is OK. 1343 */ 1344 JNIEXPORT jint JNICALL 1345 JVM_Sync(jint fd); 1346 1347 /* 1348 * Networking library support 1349 */ 1350 1351 JNIEXPORT jint JNICALL 1352 JVM_InitializeSocketLibrary(void); 1353 1354 struct sockaddr; 1355 1356 JNIEXPORT jint JNICALL 1357 JVM_Socket(jint domain, jint type, jint protocol); 1358 1359 JNIEXPORT jint JNICALL 1360 JVM_SocketClose(jint fd); 1361 1362 JNIEXPORT jint JNICALL 1363 JVM_SocketShutdown(jint fd, jint howto); 1364 1365 JNIEXPORT jint JNICALL 1366 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags); 1367 1368 JNIEXPORT jint JNICALL 1369 JVM_Send(jint fd, char *buf, jint nBytes, jint flags); 1370 1371 JNIEXPORT jint JNICALL 1372 JVM_Timeout(int fd, long timeout); 1373 1374 JNIEXPORT jint JNICALL 1375 JVM_Listen(jint fd, jint count); 1376 1377 JNIEXPORT jint JNICALL 1378 JVM_Connect(jint fd, struct sockaddr *him, jint len); 1379 1380 JNIEXPORT jint JNICALL 1381 JVM_Bind(jint fd, struct sockaddr *him, jint len); 1382 1383 JNIEXPORT jint JNICALL 1384 JVM_Accept(jint fd, struct sockaddr *him, jint *len); 1385 1386 JNIEXPORT jint JNICALL 1387 JVM_RecvFrom(jint fd, char *buf, int nBytes, 1388 int flags, struct sockaddr *from, int *fromlen); 1389 1390 JNIEXPORT jint JNICALL 1391 JVM_SendTo(jint fd, char *buf, int len, 1392 int flags, struct sockaddr *to, int tolen); 1393 1394 JNIEXPORT jint JNICALL 1395 JVM_SocketAvailable(jint fd, jint *result); 1396 1397 1398 JNIEXPORT jint JNICALL 1399 JVM_GetSockName(jint fd, struct sockaddr *him, int *len); 1400 1401 JNIEXPORT jint JNICALL 1402 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen); 1403 1404 JNIEXPORT jint JNICALL 1405 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen); 1406 1407 /* 1408 * These routines are only reentrant on Windows 1409 */ 1410 1411 #ifdef _WINDOWS 1412 1413 JNIEXPORT struct protoent * JNICALL 1414 JVM_GetProtoByName(char* name); 1415 1416 JNIEXPORT struct hostent* JNICALL 1417 JVM_GetHostByAddr(const char* name, int len, int type); 1418 1419 JNIEXPORT struct hostent* JNICALL 1420 JVM_GetHostByName(char* name); 1421 1422 #endif /* _WINDOWS */ 1423 1424 JNIEXPORT int JNICALL 1425 JVM_GetHostName(char* name, int namelen); 1426 1427 /* 1428 * The standard printing functions supported by the Java VM. (Should they 1429 * be renamed to JVM_* in the future? 1430 */ 1431 1432 /* 1433 * BE CAREFUL! The following functions do not implement the 1434 * full feature set of standard C printf formats. 1435 */ 1436 int 1437 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1438 1439 int 1440 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1441 1442 int 1443 jio_fprintf(FILE *, const char *fmt, ...); 1444 1445 int 1446 jio_vfprintf(FILE *, const char *fmt, va_list args); 1447 1448 1449 JNIEXPORT void * JNICALL 1450 JVM_RawMonitorCreate(void); 1451 1452 JNIEXPORT void JNICALL 1453 JVM_RawMonitorDestroy(void *mon); 1454 1455 JNIEXPORT jint JNICALL 1456 JVM_RawMonitorEnter(void *mon); 1457 1458 JNIEXPORT void JNICALL 1459 JVM_RawMonitorExit(void *mon); 1460 1461 1462 #ifdef SUPPORT_OLD_REFLECTION 1463 1464 /* 1465 * Support for old native code-based (pre-JDK 1.4) reflection implementation. 1466 * Disabled by default in the product build. 1467 * 1468 * See reflection.hpp for information on SUPPORT_OLD_REFLECTION 1469 */ 1470 1471 /* 1472 * reflecting fields and methods. 1473 * which: 0 --- MEMBER_PUBLIC 1474 * 1 --- MEMBER_DECLARED 1475 * NOTE: absent in product build by default 1476 */ 1477 1478 JNIEXPORT jobjectArray JNICALL 1479 JVM_GetClassFields(JNIEnv *env, jclass cls, jint which); 1480 1481 JNIEXPORT jobjectArray JNICALL 1482 JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which); 1483 1484 JNIEXPORT jobjectArray JNICALL 1485 JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which); 1486 1487 JNIEXPORT jobject JNICALL 1488 JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which); 1489 1490 JNIEXPORT jobject JNICALL 1491 JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, 1492 jint which); 1493 JNIEXPORT jobject JNICALL 1494 JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, 1495 jint which); 1496 1497 /* 1498 * Implements Class.newInstance 1499 */ 1500 JNIEXPORT jobject JNICALL 1501 JVM_NewInstance(JNIEnv *env, jclass cls); 1502 1503 /* 1504 * java.lang.reflect.Field 1505 */ 1506 JNIEXPORT jobject JNICALL 1507 JVM_GetField(JNIEnv *env, jobject field, jobject obj); 1508 1509 JNIEXPORT jvalue JNICALL 1510 JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, 1511 unsigned char wCode); 1512 1513 JNIEXPORT void JNICALL 1514 JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val); 1515 1516 JNIEXPORT void JNICALL 1517 JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, 1518 unsigned char vCode); 1519 1520 /* 1521 * java.lang.reflect.Method 1522 */ 1523 JNIEXPORT jobject JNICALL 1524 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 1525 1526 /* 1527 * java.lang.reflect.Constructor 1528 */ 1529 JNIEXPORT jobject JNICALL 1530 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 1531 1532 #endif /* SUPPORT_OLD_REFLECTION */ 1533 1534 /* 1535 * java.lang.management support 1536 */ 1537 JNIEXPORT void* JNICALL 1538 JVM_GetManagement(jint version); 1539 1540 /* 1541 * com.sun.tools.attach.VirtualMachine support 1542 * 1543 * Initialize the agent properties with the properties maintained in the VM. 1544 */ 1545 JNIEXPORT jobject JNICALL 1546 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1547 1548 /* Generics reflection support. 1549 * 1550 * Returns information about the given class's EnclosingMethod 1551 * attribute, if present, or null if the class had no enclosing 1552 * method. 1553 * 1554 * If non-null, the returned array contains three elements. Element 0 1555 * is the java.lang.Class of which the enclosing method is a member, 1556 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1557 * method's name and descriptor, respectively. 1558 */ 1559 JNIEXPORT jobjectArray JNICALL 1560 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1561 1562 /* 1563 * Java thread state support 1564 */ 1565 enum { 1566 JAVA_THREAD_STATE_NEW = 0, 1567 JAVA_THREAD_STATE_RUNNABLE = 1, 1568 JAVA_THREAD_STATE_BLOCKED = 2, 1569 JAVA_THREAD_STATE_WAITING = 3, 1570 JAVA_THREAD_STATE_TIMED_WAITING = 4, 1571 JAVA_THREAD_STATE_TERMINATED = 5, 1572 JAVA_THREAD_STATE_COUNT = 6 1573 }; 1574 1575 /* 1576 * Returns an array of the threadStatus values representing the 1577 * given Java thread state. Returns NULL if the VM version is 1578 * incompatible with the JDK or doesn't support the given 1579 * Java thread state. 1580 */ 1581 JNIEXPORT jintArray JNICALL 1582 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState); 1583 1584 /* 1585 * Returns an array of the substate names representing the 1586 * given Java thread state. Returns NULL if the VM version is 1587 * incompatible with the JDK or the VM doesn't support 1588 * the given Java thread state. 1589 * values must be the jintArray returned from JVM_GetThreadStateValues 1590 * and javaThreadState. 1591 */ 1592 JNIEXPORT jobjectArray JNICALL 1593 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values); 1594 1595 /* ========================================================================= 1596 * The following defines a private JVM interface that the JDK can query 1597 * for the JVM version and capabilities. sun.misc.Version defines 1598 * the methods for getting the VM version and its capabilities. 1599 * 1600 * When a new bit is added, the following should be updated to provide 1601 * access to the new capability: 1602 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1603 * SDK: Version class 1604 * 1605 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1606 * JVM to query for the JDK version and capabilities. 1607 * 1608 * When a new bit is added, the following should be updated to provide 1609 * access to the new capability: 1610 * HS: JDK_Version class 1611 * SDK: JDK_GetVersionInfo0 1612 * 1613 * ========================================================================== 1614 */ 1615 typedef struct { 1616 /* HotSpot Express VM version string: 1617 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>] 1618 */ 1619 unsigned int jvm_version; /* Consists of major.minor.0.build */ 1620 unsigned int update_version : 8; /* 0 in HotSpot Express VM */ 1621 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */ 1622 unsigned int reserved1 : 16; 1623 unsigned int reserved2; 1624 1625 /* The following bits represents JVM supports that JDK has dependency on. 1626 * JDK can use these bits to determine which JVM version 1627 * and support it has to maintain runtime compatibility. 1628 * 1629 * When a new bit is added in a minor or update release, make sure 1630 * the new bit is also added in the main/baseline. 1631 */ 1632 unsigned int is_attachable : 1; 1633 unsigned int is_kernel_jvm : 1; 1634 unsigned int : 30; 1635 unsigned int : 32; 1636 unsigned int : 32; 1637 } jvm_version_info; 1638 1639 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1640 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1641 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp). 1642 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1643 /* Build number is available in all HotSpot Express VM builds. 1644 * It is defined in make/hotspot_version file. 1645 */ 1646 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1647 1648 JNIEXPORT void JNICALL 1649 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1650 1651 typedef struct { 1652 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx 1653 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */ 1654 /* and build number (xx) */ 1655 unsigned int update_version : 8; /* Update release version (uu) */ 1656 unsigned int special_update_version : 8; /* Special update release version (c)*/ 1657 unsigned int reserved1 : 16; 1658 unsigned int reserved2; 1659 1660 /* The following bits represents new JDK supports that VM has dependency on. 1661 * VM implementation can use these bits to determine which JDK version 1662 * and support it has to maintain runtime compatibility. 1663 * 1664 * When a new bit is added in a minor or update release, make sure 1665 * the new bit is also added in the main/baseline. 1666 */ 1667 unsigned int thread_park_blocker : 1; 1668 unsigned int : 31; 1669 unsigned int : 32; 1670 unsigned int : 32; 1671 } jdk_version_info; 1672 1673 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1674 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1675 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1676 1677 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN) 1678 * It will be zero for internal builds. 1679 */ 1680 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1681 1682 /* 1683 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1684 * that is dynamically looked up by JVM. 1685 */ 1686 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1687 1688 /* 1689 * This structure is used by the launcher to get the default thread 1690 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1691 * version of 1.1. As it is not supported otherwise, it has been removed 1692 * from jni.h 1693 */ 1694 typedef struct JDK1_1InitArgs { 1695 jint version; 1696 1697 char **properties; 1698 jint checkSource; 1699 jint nativeStackSize; 1700 jint javaStackSize; 1701 jint minHeapSize; 1702 jint maxHeapSize; 1703 jint verifyMode; 1704 char *classpath; 1705 1706 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1707 void (JNICALL *exit)(jint code); 1708 void (JNICALL *abort)(void); 1709 1710 jint enableClassGC; 1711 jint enableVerboseGC; 1712 jint disableAsyncGC; 1713 jint verbose; 1714 jboolean debugging; 1715 jint debugPort; 1716 } JDK1_1InitArgs; 1717 1718 #ifdef __cplusplus 1719 } /* extern "C" */ 1720 #endif /* __cplusplus */ 1721 1722 #endif /* !_JAVASOFT_JVM_H_ */ 1723 1724 #endif // SHARE_VM_PRIMS_JVM_H