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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #ifndef _JAVASOFT_JVM_H_ 27 #define _JAVASOFT_JVM_H_ 28 29 #include <sys/stat.h> 30 31 #include "jni.h" 32 #include "jvm_md.h" 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* 39 * This file contains additional functions exported from the VM. 40 * These functions are complementary to the standard JNI support. 41 * There are three parts to this file: 42 * 43 * First, this file contains the VM-related functions needed by native 44 * libraries in the standard Java API. For example, the java.lang.Object 45 * class needs VM-level functions that wait for and notify monitors. 46 * 47 * Second, this file contains the functions and constant definitions 48 * needed by the byte code verifier and class file format checker. 49 * These functions allow the verifier and format checker to be written 50 * in a VM-independent way. 51 * 52 * Third, this file contains various I/O and nerwork operations needed 53 * by the standard Java I/O and network APIs. 54 */ 55 56 /* 57 * Bump the version number when either of the following happens: 58 * 59 * 1. There is a change in JVM_* functions. 60 * 61 * 2. There is a change in the contract between VM and Java classes. 62 * For example, if the VM relies on a new private field in Thread 63 * class. 64 */ 65 66 #define JVM_INTERFACE_VERSION 4 67 68 JNIEXPORT jint JNICALL 69 JVM_GetInterfaceVersion(void); 70 71 /************************************************************************* 72 PART 1: Functions for Native Libraries 73 ************************************************************************/ 74 /* 75 * java.lang.Object 76 */ 77 JNIEXPORT jint JNICALL 78 JVM_IHashCode(JNIEnv *env, jobject obj); 79 80 JNIEXPORT void JNICALL 81 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms); 82 83 JNIEXPORT void JNICALL 84 JVM_MonitorNotify(JNIEnv *env, jobject obj); 85 86 JNIEXPORT void JNICALL 87 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj); 88 89 JNIEXPORT jobject JNICALL 90 JVM_Clone(JNIEnv *env, jobject obj); 91 92 /* 93 * java.lang.String 94 */ 95 JNIEXPORT jstring JNICALL 96 JVM_InternString(JNIEnv *env, jstring str); 97 98 /* 99 * java.lang.System 100 */ 101 JNIEXPORT jlong JNICALL 102 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored); 103 104 JNIEXPORT jlong JNICALL 105 JVM_NanoTime(JNIEnv *env, jclass ignored); 106 107 JNIEXPORT void JNICALL 108 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, 109 jobject dst, jint dst_pos, jint length); 110 111 JNIEXPORT jobject JNICALL 112 JVM_InitProperties(JNIEnv *env, jobject p); 113 114 /* 115 * java.io.File 116 */ 117 JNIEXPORT void JNICALL 118 JVM_OnExit(void (*func)(void)); 119 120 /* 121 * java.lang.Runtime 122 */ 123 JNIEXPORT void JNICALL 124 JVM_Exit(jint code); 125 126 JNIEXPORT void JNICALL 127 JVM_Halt(jint code); 128 129 JNIEXPORT void JNICALL 130 JVM_GC(void); 131 132 /* Returns the number of real-time milliseconds that have elapsed since the 133 * least-recently-inspected heap object was last inspected by the garbage 134 * collector. 135 * 136 * For simple stop-the-world collectors this value is just the time 137 * since the most recent collection. For generational collectors it is the 138 * time since the oldest generation was most recently collected. Other 139 * collectors are free to return a pessimistic estimate of the elapsed time, or 140 * simply the time since the last full collection was performed. 141 * 142 * Note that in the presence of reference objects, a given object that is no 143 * longer strongly reachable may have to be inspected multiple times before it 144 * can be reclaimed. 145 */ 146 JNIEXPORT jlong JNICALL 147 JVM_MaxObjectInspectionAge(void); 148 149 JNIEXPORT void JNICALL 150 JVM_TraceInstructions(jboolean on); 151 152 JNIEXPORT void JNICALL 153 JVM_TraceMethodCalls(jboolean on); 154 155 JNIEXPORT jlong JNICALL 156 JVM_TotalMemory(void); 157 158 JNIEXPORT jlong JNICALL 159 JVM_FreeMemory(void); 160 161 JNIEXPORT jlong JNICALL 162 JVM_MaxMemory(void); 163 164 JNIEXPORT jint JNICALL 165 JVM_ActiveProcessorCount(void); 166 167 JNIEXPORT void * JNICALL 168 JVM_LoadLibrary(const char *name); 169 170 JNIEXPORT void JNICALL 171 JVM_UnloadLibrary(void * handle); 172 173 JNIEXPORT void * JNICALL 174 JVM_FindLibraryEntry(void *handle, const char *name); 175 176 JNIEXPORT jboolean JNICALL 177 JVM_IsSupportedJNIVersion(jint version); 178 179 /* 180 * java.lang.Float and java.lang.Double 181 */ 182 JNIEXPORT jboolean JNICALL 183 JVM_IsNaN(jdouble d); 184 185 /* 186 * java.lang.Throwable 187 */ 188 JNIEXPORT void JNICALL 189 JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 190 191 JNIEXPORT jint JNICALL 192 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable); 193 194 JNIEXPORT jobject JNICALL 195 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index); 196 197 /* 198 * java.lang.Compiler 199 */ 200 JNIEXPORT void JNICALL 201 JVM_InitializeCompiler (JNIEnv *env, jclass compCls); 202 203 JNIEXPORT jboolean JNICALL 204 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls); 205 206 JNIEXPORT jboolean JNICALL 207 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls); 208 209 JNIEXPORT jboolean JNICALL 210 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname); 211 212 JNIEXPORT jobject JNICALL 213 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg); 214 215 JNIEXPORT void JNICALL 216 JVM_EnableCompiler(JNIEnv *env, jclass compCls); 217 218 JNIEXPORT void JNICALL 219 JVM_DisableCompiler(JNIEnv *env, jclass compCls); 220 221 /* 222 * java.lang.Thread 223 */ 224 JNIEXPORT void JNICALL 225 JVM_StartThread(JNIEnv *env, jobject thread); 226 227 JNIEXPORT void JNICALL 228 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 229 230 JNIEXPORT jboolean JNICALL 231 JVM_IsThreadAlive(JNIEnv *env, jobject thread); 232 233 JNIEXPORT void JNICALL 234 JVM_SuspendThread(JNIEnv *env, jobject thread); 235 236 JNIEXPORT void JNICALL 237 JVM_ResumeThread(JNIEnv *env, jobject thread); 238 239 JNIEXPORT void JNICALL 240 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 241 242 JNIEXPORT void JNICALL 243 JVM_Yield(JNIEnv *env, jclass threadClass); 244 245 JNIEXPORT void JNICALL 246 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 247 248 JNIEXPORT jobject JNICALL 249 JVM_CurrentThread(JNIEnv *env, jclass threadClass); 250 251 JNIEXPORT jint JNICALL 252 JVM_CountStackFrames(JNIEnv *env, jobject thread); 253 254 JNIEXPORT void JNICALL 255 JVM_Interrupt(JNIEnv *env, jobject thread); 256 257 JNIEXPORT jboolean JNICALL 258 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 259 260 JNIEXPORT jboolean JNICALL 261 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 262 263 JNIEXPORT void JNICALL 264 JVM_DumpAllStacks(JNIEnv *env, jclass unused); 265 266 JNIEXPORT jobjectArray JNICALL 267 JVM_GetAllThreads(JNIEnv *env, jclass dummy); 268 269 JNIEXPORT void JNICALL 270 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name); 271 272 /* getStackTrace() and getAllStackTraces() method */ 273 JNIEXPORT jobjectArray JNICALL 274 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 275 276 /* 277 * java.lang.SecurityManager 278 */ 279 JNIEXPORT jclass JNICALL 280 JVM_CurrentLoadedClass(JNIEnv *env); 281 282 JNIEXPORT jobject JNICALL 283 JVM_CurrentClassLoader(JNIEnv *env); 284 285 JNIEXPORT jobjectArray JNICALL 286 JVM_GetClassContext(JNIEnv *env); 287 288 JNIEXPORT jint JNICALL 289 JVM_ClassDepth(JNIEnv *env, jstring name); 290 291 JNIEXPORT jint JNICALL 292 JVM_ClassLoaderDepth(JNIEnv *env); 293 294 /* 295 * java.lang.Package 296 */ 297 JNIEXPORT jstring JNICALL 298 JVM_GetSystemPackage(JNIEnv *env, jstring name); 299 300 JNIEXPORT jobjectArray JNICALL 301 JVM_GetSystemPackages(JNIEnv *env); 302 303 /* 304 * java.io.ObjectInputStream 305 */ 306 JNIEXPORT jobject JNICALL 307 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass, 308 jclass initClass); 309 310 JNIEXPORT jobject JNICALL 311 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, 312 jint length); 313 314 JNIEXPORT jobject JNICALL 315 JVM_LatestUserDefinedLoader(JNIEnv *env); 316 317 /* 318 * This function has been deprecated and should not be considered 319 * part of the specified JVM interface. 320 */ 321 JNIEXPORT jclass JNICALL 322 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass, 323 jstring currClassName); 324 325 /* 326 * java.lang.reflect.Array 327 */ 328 JNIEXPORT jint JNICALL 329 JVM_GetArrayLength(JNIEnv *env, jobject arr); 330 331 JNIEXPORT jobject JNICALL 332 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 333 334 JNIEXPORT jvalue JNICALL 335 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 336 337 JNIEXPORT void JNICALL 338 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 339 340 JNIEXPORT void JNICALL 341 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 342 unsigned char vCode); 343 344 JNIEXPORT jobject JNICALL 345 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 346 347 JNIEXPORT jobject JNICALL 348 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 349 350 /* 351 * java.lang.Class and java.lang.ClassLoader 352 */ 353 354 #define JVM_CALLER_DEPTH -1 355 356 /* 357 * Returns the immediate caller class of the native method invoking 358 * JVM_GetCallerClass. The Method.invoke and other frames due to 359 * reflection machinery are skipped. 360 * 361 * The depth parameter must be -1 (JVM_DEPTH). The caller is expected 362 * to be marked with sun.reflect.CallerSensitive. The JVM will throw 363 * an error if it is not marked propertly. 364 */ 365 JNIEXPORT jclass JNICALL 366 JVM_GetCallerClass(JNIEnv *env, int depth); 367 368 369 /* 370 * Find primitive classes 371 * utf: class name 372 */ 373 JNIEXPORT jclass JNICALL 374 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 375 376 /* 377 * Link the class 378 */ 379 JNIEXPORT void JNICALL 380 JVM_ResolveClass(JNIEnv *env, jclass cls); 381 382 /* 383 * Find a class from a boot class loader. Returns NULL if class not found. 384 */ 385 JNIEXPORT jclass JNICALL 386 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 387 388 /* 389 * Find a class from a given class loader. Throws ClassNotFoundException. 390 * name: name of class 391 * init: whether initialization is done 392 * loader: class loader to look up the class. This may not be the same as the caller's 393 * class loader. 394 * caller: initiating class. The initiating class may be null when a security 395 * manager is not installed. 396 */ 397 JNIEXPORT jclass JNICALL 398 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init, 399 jobject loader, jclass caller); 400 401 /* 402 * Find a class from a given class loader. Throw ClassNotFoundException 403 * or NoClassDefFoundError depending on the value of the last 404 * argument. 405 */ 406 JNIEXPORT jclass JNICALL 407 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init, 408 jobject loader, jboolean throwError); 409 410 /* 411 * Find a class from a given class. 412 */ 413 JNIEXPORT jclass JNICALL 414 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 415 jclass from); 416 417 /* Find a loaded class cached by the VM */ 418 JNIEXPORT jclass JNICALL 419 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 420 421 /* Define a class */ 422 JNIEXPORT jclass JNICALL 423 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 424 jsize len, jobject pd); 425 426 /* Define a class with a source (added in JDK1.5) */ 427 JNIEXPORT jclass JNICALL 428 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 429 const jbyte *buf, jsize len, jobject pd, 430 const char *source); 431 432 /* 433 * Reflection support functions 434 */ 435 436 JNIEXPORT jstring JNICALL 437 JVM_GetClassName(JNIEnv *env, jclass cls); 438 439 JNIEXPORT jobjectArray JNICALL 440 JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 441 442 JNIEXPORT jboolean JNICALL 443 JVM_IsInterface(JNIEnv *env, jclass cls); 444 445 JNIEXPORT jobjectArray JNICALL 446 JVM_GetClassSigners(JNIEnv *env, jclass cls); 447 448 JNIEXPORT void JNICALL 449 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 450 451 JNIEXPORT jobject JNICALL 452 JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 453 454 JNIEXPORT jboolean JNICALL 455 JVM_IsArrayClass(JNIEnv *env, jclass cls); 456 457 JNIEXPORT jboolean JNICALL 458 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 459 460 JNIEXPORT jclass JNICALL 461 JVM_GetComponentType(JNIEnv *env, jclass cls); 462 463 JNIEXPORT jint JNICALL 464 JVM_GetClassModifiers(JNIEnv *env, jclass cls); 465 466 JNIEXPORT jobjectArray JNICALL 467 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 468 469 JNIEXPORT jclass JNICALL 470 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 471 472 /* Generics support (JDK 1.5) */ 473 JNIEXPORT jstring JNICALL 474 JVM_GetClassSignature(JNIEnv *env, jclass cls); 475 476 /* Annotations support (JDK 1.5) */ 477 JNIEXPORT jbyteArray JNICALL 478 JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 479 480 /* Type use annotations support (JDK 1.8) */ 481 482 JNIEXPORT jbyteArray JNICALL 483 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls); 484 485 JNIEXPORT jbyteArray JNICALL 486 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field); 487 488 JNIEXPORT jbyteArray JNICALL 489 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method); 490 491 /* 492 * New (JDK 1.4) reflection implementation 493 */ 494 495 JNIEXPORT jobjectArray JNICALL 496 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 497 498 JNIEXPORT jobjectArray JNICALL 499 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 500 501 JNIEXPORT jobjectArray JNICALL 502 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 503 504 /* Differs from JVM_GetClassModifiers in treatment of inner classes. 505 This returns the access flags for the class as specified in the 506 class file rather than searching the InnerClasses attribute (if 507 present) to find the source-level access flags. Only the values of 508 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 509 valid. */ 510 JNIEXPORT jint JNICALL 511 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 512 513 /* The following two reflection routines are still needed due to startup time issues */ 514 /* 515 * java.lang.reflect.Method 516 */ 517 JNIEXPORT jobject JNICALL 518 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 519 520 /* 521 * java.lang.reflect.Constructor 522 */ 523 JNIEXPORT jobject JNICALL 524 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 525 526 /* 527 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 528 */ 529 530 JNIEXPORT jobject JNICALL 531 JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 532 533 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 534 (JNIEnv *env, jobject unused, jobject jcpool); 535 536 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 537 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 538 539 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 540 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 541 542 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 543 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 544 545 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 546 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 547 548 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 549 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 550 551 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 552 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 553 554 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 555 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 556 557 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 558 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 559 560 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 561 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 562 563 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 564 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 565 566 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 567 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 568 569 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 570 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 571 572 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 573 (JNIEnv *env, jobject unused, jobject jcpool, jint index); 574 575 /* 576 * Parameter reflection 577 */ 578 579 JNIEXPORT jobjectArray JNICALL 580 JVM_GetMethodParameters(JNIEnv *env, jobject method); 581 582 /* 583 * java.security.* 584 */ 585 586 JNIEXPORT jobject JNICALL 587 JVM_DoPrivileged(JNIEnv *env, jclass cls, 588 jobject action, jobject context, jboolean wrapException); 589 590 JNIEXPORT jobject JNICALL 591 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 592 593 JNIEXPORT jobject JNICALL 594 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 595 596 /* 597 * Signal support, used to implement the shutdown sequence. Every VM must 598 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 599 * (^C) and the latter for external termination (kill, system shutdown, etc.). 600 * Other platform-dependent signal values may also be supported. 601 */ 602 603 JNIEXPORT void * JNICALL 604 JVM_RegisterSignal(jint sig, void *handler); 605 606 JNIEXPORT jboolean JNICALL 607 JVM_RaiseSignal(jint sig); 608 609 JNIEXPORT jint JNICALL 610 JVM_FindSignal(const char *name); 611 612 /* 613 * Retrieve the assertion directives for the specified class. 614 */ 615 JNIEXPORT jboolean JNICALL 616 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 617 618 /* 619 * Retrieve the assertion directives from the VM. 620 */ 621 JNIEXPORT jobject JNICALL 622 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 623 624 /* 625 * java.util.concurrent.atomic.AtomicLong 626 */ 627 JNIEXPORT jboolean JNICALL 628 JVM_SupportsCX8(void); 629 630 /* 631 * com.sun.dtrace.jsdt support 632 */ 633 634 #define JVM_TRACING_DTRACE_VERSION 1 635 636 /* 637 * Structure to pass one probe description to JVM 638 */ 639 typedef struct { 640 jmethodID method; 641 jstring function; 642 jstring name; 643 void* reserved[4]; // for future use 644 } JVM_DTraceProbe; 645 646 /** 647 * Encapsulates the stability ratings for a DTrace provider field 648 */ 649 typedef struct { 650 jint nameStability; 651 jint dataStability; 652 jint dependencyClass; 653 } JVM_DTraceInterfaceAttributes; 654 655 /* 656 * Structure to pass one provider description to JVM 657 */ 658 typedef struct { 659 jstring name; 660 JVM_DTraceProbe* probes; 661 jint probe_count; 662 JVM_DTraceInterfaceAttributes providerAttributes; 663 JVM_DTraceInterfaceAttributes moduleAttributes; 664 JVM_DTraceInterfaceAttributes functionAttributes; 665 JVM_DTraceInterfaceAttributes nameAttributes; 666 JVM_DTraceInterfaceAttributes argsAttributes; 667 void* reserved[4]; // for future use 668 } JVM_DTraceProvider; 669 670 /* 671 * Get the version number the JVM was built with 672 */ 673 JNIEXPORT jint JNICALL 674 JVM_DTraceGetVersion(JNIEnv* env); 675 676 /* 677 * Register new probe with given signature, return global handle 678 * 679 * The version passed in is the version that the library code was 680 * built with. 681 */ 682 JNIEXPORT jlong JNICALL 683 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 684 jint providers_count, JVM_DTraceProvider* providers); 685 686 /* 687 * Check JSDT probe 688 */ 689 JNIEXPORT jboolean JNICALL 690 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 691 692 /* 693 * Destroy custom DOF 694 */ 695 JNIEXPORT void JNICALL 696 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle); 697 698 /* 699 * Check to see if DTrace is supported by OS 700 */ 701 JNIEXPORT jboolean JNICALL 702 JVM_DTraceIsSupported(JNIEnv* env); 703 704 /************************************************************************* 705 PART 2: Support for the Verifier and Class File Format Checker 706 ************************************************************************/ 707 /* 708 * Return the class name in UTF format. The result is valid 709 * until JVM_ReleaseUTf is called. 710 * 711 * The caller must treat the string as a constant and not modify it 712 * in any way. 713 */ 714 JNIEXPORT const char * JNICALL 715 JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 716 717 /* 718 * Returns the constant pool types in the buffer provided by "types." 719 */ 720 JNIEXPORT void JNICALL 721 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 722 723 /* 724 * Returns the number of Constant Pool entries. 725 */ 726 JNIEXPORT jint JNICALL 727 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 728 729 /* 730 * Returns the number of *declared* fields or methods. 731 */ 732 JNIEXPORT jint JNICALL 733 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 734 735 JNIEXPORT jint JNICALL 736 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 737 738 /* 739 * Returns the CP indexes of exceptions raised by a given method. 740 * Places the result in the given buffer. 741 * 742 * The method is identified by method_index. 743 */ 744 JNIEXPORT void JNICALL 745 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 746 unsigned short *exceptions); 747 /* 748 * Returns the number of exceptions raised by a given method. 749 * The method is identified by method_index. 750 */ 751 JNIEXPORT jint JNICALL 752 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 753 754 /* 755 * Returns the byte code sequence of a given method. 756 * Places the result in the given buffer. 757 * 758 * The method is identified by method_index. 759 */ 760 JNIEXPORT void JNICALL 761 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 762 unsigned char *code); 763 764 /* 765 * Returns the length of the byte code sequence of a given method. 766 * The method is identified by method_index. 767 */ 768 JNIEXPORT jint JNICALL 769 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 770 771 /* 772 * A structure used to a capture exception table entry in a Java method. 773 */ 774 typedef struct { 775 jint start_pc; 776 jint end_pc; 777 jint handler_pc; 778 jint catchType; 779 } JVM_ExceptionTableEntryType; 780 781 /* 782 * Returns the exception table entry at entry_index of a given method. 783 * Places the result in the given buffer. 784 * 785 * The method is identified by method_index. 786 */ 787 JNIEXPORT void JNICALL 788 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 789 jint entry_index, 790 JVM_ExceptionTableEntryType *entry); 791 792 /* 793 * Returns the length of the exception table of a given method. 794 * The method is identified by method_index. 795 */ 796 JNIEXPORT jint JNICALL 797 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 798 799 /* 800 * Returns the modifiers of a given field. 801 * The field is identified by field_index. 802 */ 803 JNIEXPORT jint JNICALL 804 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 805 806 /* 807 * Returns the modifiers of a given method. 808 * The method is identified by method_index. 809 */ 810 JNIEXPORT jint JNICALL 811 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 812 813 /* 814 * Returns the number of local variables of a given method. 815 * The method is identified by method_index. 816 */ 817 JNIEXPORT jint JNICALL 818 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 819 820 /* 821 * Returns the number of arguments (including this pointer) of a given method. 822 * The method is identified by method_index. 823 */ 824 JNIEXPORT jint JNICALL 825 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 826 827 /* 828 * Returns the maximum amount of stack (in words) used by a given method. 829 * The method is identified by method_index. 830 */ 831 JNIEXPORT jint JNICALL 832 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 833 834 /* 835 * Is a given method a constructor. 836 * The method is identified by method_index. 837 */ 838 JNIEXPORT jboolean JNICALL 839 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 840 841 /* 842 * Is the given method generated by the VM. 843 * The method is identified by method_index. 844 */ 845 JNIEXPORT jboolean JNICALL 846 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index); 847 848 /* 849 * Returns the name of a given method in UTF format. 850 * The result remains valid until JVM_ReleaseUTF is called. 851 * 852 * The caller must treat the string as a constant and not modify it 853 * in any way. 854 */ 855 JNIEXPORT const char * JNICALL 856 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 857 858 /* 859 * Returns the signature of a given method in UTF format. 860 * The result remains valid until JVM_ReleaseUTF is called. 861 * 862 * The caller must treat the string as a constant and not modify it 863 * in any way. 864 */ 865 JNIEXPORT const char * JNICALL 866 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 867 868 /* 869 * Returns the name of the field referred to at a given constant pool 870 * index. 871 * 872 * The result is in UTF format and remains valid until JVM_ReleaseUTF 873 * is called. 874 * 875 * The caller must treat the string as a constant and not modify it 876 * in any way. 877 */ 878 JNIEXPORT const char * JNICALL 879 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 880 881 /* 882 * Returns the name of the method referred to at a given constant pool 883 * index. 884 * 885 * The result is in UTF format and remains valid until JVM_ReleaseUTF 886 * is called. 887 * 888 * The caller must treat the string as a constant and not modify it 889 * in any way. 890 */ 891 JNIEXPORT const char * JNICALL 892 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 893 894 /* 895 * Returns the signature of the method referred to at a given constant pool 896 * index. 897 * 898 * The result is in UTF format and remains valid until JVM_ReleaseUTF 899 * is called. 900 * 901 * The caller must treat the string as a constant and not modify it 902 * in any way. 903 */ 904 JNIEXPORT const char * JNICALL 905 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 906 907 /* 908 * Returns the signature of the field referred to at a given constant pool 909 * index. 910 * 911 * The result is in UTF format and remains valid until JVM_ReleaseUTF 912 * is called. 913 * 914 * The caller must treat the string as a constant and not modify it 915 * in any way. 916 */ 917 JNIEXPORT const char * JNICALL 918 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 919 920 /* 921 * Returns the class name referred to at a given constant pool index. 922 * 923 * The result is in UTF format and remains valid until JVM_ReleaseUTF 924 * is called. 925 * 926 * The caller must treat the string as a constant and not modify it 927 * in any way. 928 */ 929 JNIEXPORT const char * JNICALL 930 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 931 932 /* 933 * Returns the class name referred to at a given constant pool index. 934 * 935 * The constant pool entry must refer to a CONSTANT_Fieldref. 936 * 937 * The result is in UTF format and remains valid until JVM_ReleaseUTF 938 * is called. 939 * 940 * The caller must treat the string as a constant and not modify it 941 * in any way. 942 */ 943 JNIEXPORT const char * JNICALL 944 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 945 946 /* 947 * Returns the class name referred to at a given constant pool index. 948 * 949 * The constant pool entry must refer to CONSTANT_Methodref or 950 * CONSTANT_InterfaceMethodref. 951 * 952 * The result is in UTF format and remains valid until JVM_ReleaseUTF 953 * is called. 954 * 955 * The caller must treat the string as a constant and not modify it 956 * in any way. 957 */ 958 JNIEXPORT const char * JNICALL 959 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 960 961 /* 962 * Returns the modifiers of a field in calledClass. The field is 963 * referred to in class cb at constant pool entry index. 964 * 965 * The caller must treat the string as a constant and not modify it 966 * in any way. 967 * 968 * Returns -1 if the field does not exist in calledClass. 969 */ 970 JNIEXPORT jint JNICALL 971 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 972 973 /* 974 * Returns the modifiers of a method in calledClass. The method is 975 * referred to in class cb at constant pool entry index. 976 * 977 * Returns -1 if the method does not exist in calledClass. 978 */ 979 JNIEXPORT jint JNICALL 980 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 981 982 /* 983 * Releases the UTF string obtained from the VM. 984 */ 985 JNIEXPORT void JNICALL 986 JVM_ReleaseUTF(const char *utf); 987 988 /* 989 * Compare if two classes are in the same package. 990 */ 991 JNIEXPORT jboolean JNICALL 992 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 993 994 /* Get classfile constants */ 995 #include "classfile_constants.h" 996 997 /* 998 * A function defined by the byte-code verifier and called by the VM. 999 * This is not a function implemented in the VM. 1000 * 1001 * Returns JNI_FALSE if verification fails. A detailed error message 1002 * will be places in msg_buf, whose length is specified by buf_len. 1003 */ 1004 typedef jboolean (*verifier_fn_t)(JNIEnv *env, 1005 jclass cb, 1006 char * msg_buf, 1007 jint buf_len); 1008 1009 1010 /* 1011 * Support for a VM-independent class format checker. 1012 */ 1013 typedef struct { 1014 unsigned long code; /* byte code */ 1015 unsigned long excs; /* exceptions */ 1016 unsigned long etab; /* catch table */ 1017 unsigned long lnum; /* line number */ 1018 unsigned long lvar; /* local vars */ 1019 } method_size_info; 1020 1021 typedef struct { 1022 unsigned int constants; /* constant pool */ 1023 unsigned int fields; 1024 unsigned int methods; 1025 unsigned int interfaces; 1026 unsigned int fields2; /* number of static 2-word fields */ 1027 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1028 1029 method_size_info clinit; /* memory used in clinit */ 1030 method_size_info main; /* used everywhere else */ 1031 } class_size_info; 1032 1033 /* 1034 * Functions defined in libjava.so to perform string conversions. 1035 * 1036 */ 1037 1038 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1039 1040 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b); 1041 1042 /* This is the function defined in libjava.so that performs class 1043 * format checks. This functions fills in size information about 1044 * the class file and returns: 1045 * 1046 * 0: good 1047 * -1: out of memory 1048 * -2: bad format 1049 * -3: unsupported version 1050 * -4: bad class name 1051 */ 1052 1053 typedef jint (*check_format_fn_t)(char *class_name, 1054 unsigned char *data, 1055 unsigned int data_size, 1056 class_size_info *class_size, 1057 char *message_buffer, 1058 jint buffer_length, 1059 jboolean measure_only, 1060 jboolean check_relaxed); 1061 1062 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1063 JVM_ACC_FINAL | \ 1064 JVM_ACC_SUPER | \ 1065 JVM_ACC_INTERFACE | \ 1066 JVM_ACC_ABSTRACT | \ 1067 JVM_ACC_ANNOTATION | \ 1068 JVM_ACC_ENUM | \ 1069 JVM_ACC_SYNTHETIC) 1070 1071 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1072 JVM_ACC_PRIVATE | \ 1073 JVM_ACC_PROTECTED | \ 1074 JVM_ACC_STATIC | \ 1075 JVM_ACC_FINAL | \ 1076 JVM_ACC_VOLATILE | \ 1077 JVM_ACC_TRANSIENT | \ 1078 JVM_ACC_ENUM | \ 1079 JVM_ACC_SYNTHETIC) 1080 1081 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1082 JVM_ACC_PRIVATE | \ 1083 JVM_ACC_PROTECTED | \ 1084 JVM_ACC_STATIC | \ 1085 JVM_ACC_FINAL | \ 1086 JVM_ACC_SYNCHRONIZED | \ 1087 JVM_ACC_BRIDGE | \ 1088 JVM_ACC_VARARGS | \ 1089 JVM_ACC_NATIVE | \ 1090 JVM_ACC_ABSTRACT | \ 1091 JVM_ACC_STRICT | \ 1092 JVM_ACC_SYNTHETIC) 1093 1094 /* 1095 * This is the function defined in libjava.so to perform path 1096 * canonicalization. VM call this function before opening jar files 1097 * to load system classes. 1098 * 1099 */ 1100 1101 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1102 1103 /************************************************************************* 1104 PART 3: I/O and Network Support 1105 ************************************************************************/ 1106 1107 /* Note that the JVM IO functions are expected to return JVM_IO_ERR 1108 * when there is any kind of error. The caller can then use the 1109 * platform specific support (e.g., errno) to get the detailed 1110 * error info. The JVM_GetLastErrorString procedure may also be used 1111 * to obtain a descriptive error string. 1112 */ 1113 #define JVM_IO_ERR (-1) 1114 1115 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO 1116 * operation has been disrupted by Thread.interrupt. There are a 1117 * number of technical difficulties related to interruptible IO that 1118 * need to be solved. For example, most existing programs do not handle 1119 * InterruptedIOExceptions specially, they simply treat those as any 1120 * IOExceptions, which typically indicate fatal errors. 1121 * 1122 * There are also two modes of operation for interruptible IO. In the 1123 * resumption mode, an interrupted IO operation is guaranteed not to 1124 * have any side-effects, and can be restarted. In the termination mode, 1125 * an interrupted IO operation corrupts the underlying IO stream, so 1126 * that the only reasonable operation on an interrupted stream is to 1127 * close that stream. The resumption mode seems to be impossible to 1128 * implement on Win32 and Solaris. Implementing the termination mode is 1129 * easier, but it's not clear that's the right semantics. 1130 * 1131 * Interruptible IO is not supported on Win32.It can be enabled/disabled 1132 * using a compile-time flag on Solaris. Third-party JVM ports do not 1133 * need to implement interruptible IO. 1134 */ 1135 #define JVM_IO_INTR (-2) 1136 1137 /* Write a string into the given buffer, in the platform's local encoding, 1138 * that describes the most recent system-level error to occur in this thread. 1139 * Return the length of the string or zero if no error occurred. 1140 */ 1141 JNIEXPORT jint JNICALL 1142 JVM_GetLastErrorString(char *buf, int len); 1143 1144 /* 1145 * Convert a pathname into native format. This function does syntactic 1146 * cleanup, such as removing redundant separator characters. It modifies 1147 * the given pathname string in place. 1148 */ 1149 JNIEXPORT char * JNICALL 1150 JVM_NativePath(char *); 1151 1152 /* 1153 * JVM I/O error codes 1154 */ 1155 #define JVM_EEXIST -100 1156 1157 /* 1158 * Open a file descriptor. This function returns a negative error code 1159 * on error, and a non-negative integer that is the file descriptor on 1160 * success. 1161 */ 1162 JNIEXPORT jint JNICALL 1163 JVM_Open(const char *fname, jint flags, jint mode); 1164 1165 /* 1166 * Close a file descriptor. This function returns -1 on error, and 0 1167 * on success. 1168 * 1169 * fd the file descriptor to close. 1170 */ 1171 JNIEXPORT jint JNICALL 1172 JVM_Close(jint fd); 1173 1174 /* 1175 * Read data from a file decriptor into a char array. 1176 * 1177 * fd the file descriptor to read from. 1178 * buf the buffer where to put the read data. 1179 * nbytes the number of bytes to read. 1180 * 1181 * This function returns -1 on error, and 0 on success. 1182 */ 1183 JNIEXPORT jint JNICALL 1184 JVM_Read(jint fd, char *buf, jint nbytes); 1185 1186 /* 1187 * Write data from a char array to a file decriptor. 1188 * 1189 * fd the file descriptor to read from. 1190 * buf the buffer from which to fetch the data. 1191 * nbytes the number of bytes to write. 1192 * 1193 * This function returns -1 on error, and 0 on success. 1194 */ 1195 JNIEXPORT jint JNICALL 1196 JVM_Write(jint fd, char *buf, jint nbytes); 1197 1198 /* 1199 * Returns the number of bytes available for reading from a given file 1200 * descriptor 1201 */ 1202 JNIEXPORT jint JNICALL 1203 JVM_Available(jint fd, jlong *pbytes); 1204 1205 /* 1206 * Move the file descriptor pointer from whence by offset. 1207 * 1208 * fd the file descriptor to move. 1209 * offset the number of bytes to move it by. 1210 * whence the start from where to move it. 1211 * 1212 * This function returns the resulting pointer location. 1213 */ 1214 JNIEXPORT jlong JNICALL 1215 JVM_Lseek(jint fd, jlong offset, jint whence); 1216 1217 /* 1218 * Set the length of the file associated with the given descriptor to the given 1219 * length. If the new length is longer than the current length then the file 1220 * is extended; the contents of the extended portion are not defined. The 1221 * value of the file pointer is undefined after this procedure returns. 1222 */ 1223 JNIEXPORT jint JNICALL 1224 JVM_SetLength(jint fd, jlong length); 1225 1226 /* 1227 * Synchronize the file descriptor's in memory state with that of the 1228 * physical device. Return of -1 is an error, 0 is OK. 1229 */ 1230 JNIEXPORT jint JNICALL 1231 JVM_Sync(jint fd); 1232 1233 /* 1234 * Networking library support 1235 */ 1236 1237 JNIEXPORT jint JNICALL 1238 JVM_InitializeSocketLibrary(void); 1239 1240 struct sockaddr; 1241 1242 JNIEXPORT jint JNICALL 1243 JVM_Socket(jint domain, jint type, jint protocol); 1244 1245 JNIEXPORT jint JNICALL 1246 JVM_SocketClose(jint fd); 1247 1248 JNIEXPORT jint JNICALL 1249 JVM_SocketShutdown(jint fd, jint howto); 1250 1251 JNIEXPORT jint JNICALL 1252 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags); 1253 1254 JNIEXPORT jint JNICALL 1255 JVM_Send(jint fd, char *buf, jint nBytes, jint flags); 1256 1257 JNIEXPORT jint JNICALL 1258 JVM_Timeout(int fd, long timeout); 1259 1260 JNIEXPORT jint JNICALL 1261 JVM_Listen(jint fd, jint count); 1262 1263 JNIEXPORT jint JNICALL 1264 JVM_Connect(jint fd, struct sockaddr *him, jint len); 1265 1266 JNIEXPORT jint JNICALL 1267 JVM_Bind(jint fd, struct sockaddr *him, jint len); 1268 1269 JNIEXPORT jint JNICALL 1270 JVM_Accept(jint fd, struct sockaddr *him, jint *len); 1271 1272 JNIEXPORT jint JNICALL 1273 JVM_RecvFrom(jint fd, char *buf, int nBytes, 1274 int flags, struct sockaddr *from, int *fromlen); 1275 1276 JNIEXPORT jint JNICALL 1277 JVM_SendTo(jint fd, char *buf, int len, 1278 int flags, struct sockaddr *to, int tolen); 1279 1280 JNIEXPORT jint JNICALL 1281 JVM_SocketAvailable(jint fd, jint *result); 1282 1283 1284 JNIEXPORT jint JNICALL 1285 JVM_GetSockName(jint fd, struct sockaddr *him, int *len); 1286 1287 JNIEXPORT jint JNICALL 1288 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen); 1289 1290 JNIEXPORT jint JNICALL 1291 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen); 1292 1293 JNIEXPORT int JNICALL 1294 JVM_GetHostName(char* name, int namelen); 1295 1296 /* 1297 * The standard printing functions supported by the Java VM. (Should they 1298 * be renamed to JVM_* in the future? 1299 */ 1300 1301 /* 1302 * BE CAREFUL! The following functions do not implement the 1303 * full feature set of standard C printf formats. 1304 */ 1305 int 1306 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1307 1308 int 1309 jio_snprintf(char *str, size_t count, const char *fmt, ...); 1310 1311 int 1312 jio_fprintf(FILE *, const char *fmt, ...); 1313 1314 int 1315 jio_vfprintf(FILE *, const char *fmt, va_list args); 1316 1317 1318 JNIEXPORT void * JNICALL 1319 JVM_RawMonitorCreate(void); 1320 1321 JNIEXPORT void JNICALL 1322 JVM_RawMonitorDestroy(void *mon); 1323 1324 JNIEXPORT jint JNICALL 1325 JVM_RawMonitorEnter(void *mon); 1326 1327 JNIEXPORT void JNICALL 1328 JVM_RawMonitorExit(void *mon); 1329 1330 /* 1331 * java.lang.management support 1332 */ 1333 JNIEXPORT void* JNICALL 1334 JVM_GetManagement(jint version); 1335 1336 /* 1337 * com.sun.tools.attach.VirtualMachine support 1338 * 1339 * Initialize the agent properties with the properties maintained in the VM. 1340 */ 1341 JNIEXPORT jobject JNICALL 1342 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1343 1344 JNIEXPORT jstring JNICALL 1345 JVM_GetTemporaryDirectory(JNIEnv *env); 1346 1347 /* Generics reflection support. 1348 * 1349 * Returns information about the given class's EnclosingMethod 1350 * attribute, if present, or null if the class had no enclosing 1351 * method. 1352 * 1353 * If non-null, the returned array contains three elements. Element 0 1354 * is the java.lang.Class of which the enclosing method is a member, 1355 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1356 * method's name and descriptor, respectively. 1357 */ 1358 JNIEXPORT jobjectArray JNICALL 1359 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1360 1361 /* 1362 * Java thread state support 1363 */ 1364 enum { 1365 JAVA_THREAD_STATE_NEW = 0, 1366 JAVA_THREAD_STATE_RUNNABLE = 1, 1367 JAVA_THREAD_STATE_BLOCKED = 2, 1368 JAVA_THREAD_STATE_WAITING = 3, 1369 JAVA_THREAD_STATE_TIMED_WAITING = 4, 1370 JAVA_THREAD_STATE_TERMINATED = 5, 1371 JAVA_THREAD_STATE_COUNT = 6 1372 }; 1373 1374 /* 1375 * Returns an array of the threadStatus values representing the 1376 * given Java thread state. Returns NULL if the VM version is 1377 * incompatible with the JDK or doesn't support the given 1378 * Java thread state. 1379 */ 1380 JNIEXPORT jintArray JNICALL 1381 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState); 1382 1383 /* 1384 * Returns an array of the substate names representing the 1385 * given Java thread state. Returns NULL if the VM version is 1386 * incompatible with the JDK or the VM doesn't support 1387 * the given Java thread state. 1388 * values must be the jintArray returned from JVM_GetThreadStateValues 1389 * and javaThreadState. 1390 */ 1391 JNIEXPORT jobjectArray JNICALL 1392 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values); 1393 1394 /* 1395 * Returns true if the JVM's lookup cache indicates that this class is 1396 * known to NOT exist for the given loader. 1397 */ 1398 JNIEXPORT jboolean JNICALL 1399 JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname); 1400 1401 /* 1402 * Returns an array of all URLs that are stored in the JVM's lookup cache 1403 * for the given loader. NULL if the lookup cache is unavailable. 1404 */ 1405 JNIEXPORT jobjectArray JNICALL 1406 JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader); 1407 1408 /* 1409 * Returns an array of all URLs that *may* contain the resource_name for the 1410 * given loader. This function returns an integer array, each element 1411 * of which can be used to index into the array returned by 1412 * JVM_GetResourceLookupCacheURLs of the same loader to determine the 1413 * URLs. 1414 */ 1415 JNIEXPORT jintArray JNICALL 1416 JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name); 1417 1418 1419 /* ========================================================================= 1420 * The following defines a private JVM interface that the JDK can query 1421 * for the JVM version and capabilities. sun.misc.Version defines 1422 * the methods for getting the VM version and its capabilities. 1423 * 1424 * When a new bit is added, the following should be updated to provide 1425 * access to the new capability: 1426 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1427 * SDK: Version class 1428 * 1429 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1430 * JVM to query for the JDK version and capabilities. 1431 * 1432 * When a new bit is added, the following should be updated to provide 1433 * access to the new capability: 1434 * HS: JDK_Version class 1435 * SDK: JDK_GetVersionInfo0 1436 * 1437 * ========================================================================== 1438 */ 1439 typedef struct { 1440 /* Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx */ 1441 unsigned int jvm_version; /* Consists of major, minor, micro (n.n.n) */ 1442 /* and build number (xx) */ 1443 unsigned int update_version : 8; /* Update release version (uu) */ 1444 unsigned int special_update_version : 8; /* Special update release version (c)*/ 1445 unsigned int reserved1 : 16; 1446 unsigned int reserved2; 1447 1448 /* The following bits represents JVM supports that JDK has dependency on. 1449 * JDK can use these bits to determine which JVM version 1450 * and support it has to maintain runtime compatibility. 1451 * 1452 * When a new bit is added in a minor or update release, make sure 1453 * the new bit is also added in the main/baseline. 1454 */ 1455 unsigned int is_attach_supported : 1; 1456 unsigned int : 31; 1457 unsigned int : 32; 1458 unsigned int : 32; 1459 } jvm_version_info; 1460 1461 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1462 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1463 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1464 1465 /* Build number is available only for RE builds. 1466 * It will be zero for internal builds. 1467 */ 1468 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1469 1470 JNIEXPORT void JNICALL 1471 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1472 1473 typedef struct { 1474 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx 1475 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */ 1476 /* and build number (xx) */ 1477 unsigned int update_version : 8; /* Update release version (uu) */ 1478 unsigned int special_update_version : 8; /* Special update release version (c)*/ 1479 unsigned int reserved1 : 16; 1480 unsigned int reserved2; 1481 1482 /* The following bits represents new JDK supports that VM has dependency on. 1483 * VM implementation can use these bits to determine which JDK version 1484 * and support it has to maintain runtime compatibility. 1485 * 1486 * When a new bit is added in a minor or update release, make sure 1487 * the new bit is also added in the main/baseline. 1488 */ 1489 unsigned int thread_park_blocker : 1; 1490 unsigned int post_vm_init_hook_enabled : 1; 1491 unsigned int pending_list_uses_discovered_field : 1; 1492 unsigned int : 29; 1493 unsigned int : 32; 1494 unsigned int : 32; 1495 } jdk_version_info; 1496 1497 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1498 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1499 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1500 1501 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN) 1502 * It will be zero for internal builds. 1503 */ 1504 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1505 1506 /* 1507 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1508 * that is dynamically looked up by JVM. 1509 */ 1510 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1511 1512 /* 1513 * This structure is used by the launcher to get the default thread 1514 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1515 * version of 1.1. As it is not supported otherwise, it has been removed 1516 * from jni.h 1517 */ 1518 typedef struct JDK1_1InitArgs { 1519 jint version; 1520 1521 char **properties; 1522 jint checkSource; 1523 jint nativeStackSize; 1524 jint javaStackSize; 1525 jint minHeapSize; 1526 jint maxHeapSize; 1527 jint verifyMode; 1528 char *classpath; 1529 1530 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1531 void (JNICALL *exit)(jint code); 1532 void (JNICALL *abort)(void); 1533 1534 jint enableClassGC; 1535 jint enableVerboseGC; 1536 jint disableAsyncGC; 1537 jint verbose; 1538 jboolean debugging; 1539 jint debugPort; 1540 } JDK1_1InitArgs; 1541 1542 1543 #ifdef __cplusplus 1544 } /* extern "C" */ 1545 1546 #endif /* __cplusplus */ 1547 1548 #endif /* !_JAVASOFT_JVM_H_ */ 1549