jvm.h revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 1997, 2009, 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 _JAVASOFT_JVM_H_ 26#define _JAVASOFT_JVM_H_ 27 28// HotSpot integration note: 29// 30// This file and jvm.h used with the JDK are identical, 31// except for the three includes removed below and the 32// SUPPORT_OLD_REFLECTION sections cut out of the JDK's jvm.h. 33 34// #include <sys/stat.h> 35// #include "jni.h" 36// #include "jvm_md.h" 37 38 39#ifdef __cplusplus 40extern "C" { 41#endif 42 43/* 44 * This file contains additional functions exported from the VM. 45 * These functions are complementary to the standard JNI support. 46 * There are three parts to this file: 47 * 48 * First, this file contains the VM-related functions needed by native 49 * libraries in the standard Java API. For example, the java.lang.Object 50 * class needs VM-level functions that wait for and notify monitors. 51 * 52 * Second, this file contains the functions and constant definitions 53 * needed by the byte code verifier and class file format checker. 54 * These functions allow the verifier and format checker to be written 55 * in a VM-independent way. 56 * 57 * Third, this file contains various I/O and nerwork operations needed 58 * by the standard Java I/O and network APIs. 59 */ 60 61/* 62 * Bump the version number when either of the following happens: 63 * 64 * 1. There is a change in JVM_* functions. 65 * 66 * 2. There is a change in the contract between VM and Java classes. 67 * For example, if the VM relies on a new private field in Thread 68 * class. 69 */ 70 71#define JVM_INTERFACE_VERSION 4 72 73 74JNIEXPORT jint JNICALL 75JVM_GetInterfaceVersion(void); 76 77/************************************************************************* 78 PART 1: Functions for Native Libraries 79 ************************************************************************/ 80/* 81 * java.lang.Object 82 */ 83JNIEXPORT jint JNICALL 84JVM_IHashCode(JNIEnv *env, jobject obj); 85 86JNIEXPORT void JNICALL 87JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms); 88 89JNIEXPORT void JNICALL 90JVM_MonitorNotify(JNIEnv *env, jobject obj); 91 92JNIEXPORT void JNICALL 93JVM_MonitorNotifyAll(JNIEnv *env, jobject obj); 94 95JNIEXPORT jobject JNICALL 96JVM_Clone(JNIEnv *env, jobject obj); 97 98/* 99 * java.lang.String 100 */ 101JNIEXPORT jstring JNICALL 102JVM_InternString(JNIEnv *env, jstring str); 103 104/* 105 * java.lang.System 106 */ 107JNIEXPORT jlong JNICALL 108JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored); 109 110JNIEXPORT jlong JNICALL 111JVM_NanoTime(JNIEnv *env, jclass ignored); 112 113JNIEXPORT void JNICALL 114JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, 115 jobject dst, jint dst_pos, jint length); 116 117JNIEXPORT jobject JNICALL 118JVM_InitProperties(JNIEnv *env, jobject p); 119 120/* 121 * java.io.File 122 */ 123JNIEXPORT void JNICALL 124JVM_OnExit(void (*func)(void)); 125 126/* 127 * java.lang.Runtime 128 */ 129JNIEXPORT void JNICALL 130JVM_Exit(jint code); 131 132JNIEXPORT void JNICALL 133JVM_Halt(jint code); 134 135JNIEXPORT void JNICALL 136JVM_GC(void); 137 138/* Returns the number of real-time milliseconds that have elapsed since the 139 * least-recently-inspected heap object was last inspected by the garbage 140 * collector. 141 * 142 * For simple stop-the-world collectors this value is just the time 143 * since the most recent collection. For generational collectors it is the 144 * time since the oldest generation was most recently collected. Other 145 * collectors are free to return a pessimistic estimate of the elapsed time, or 146 * simply the time since the last full collection was performed. 147 * 148 * Note that in the presence of reference objects, a given object that is no 149 * longer strongly reachable may have to be inspected multiple times before it 150 * can be reclaimed. 151 */ 152JNIEXPORT jlong JNICALL 153JVM_MaxObjectInspectionAge(void); 154 155JNIEXPORT void JNICALL 156JVM_TraceInstructions(jboolean on); 157 158JNIEXPORT void JNICALL 159JVM_TraceMethodCalls(jboolean on); 160 161JNIEXPORT jlong JNICALL 162JVM_TotalMemory(void); 163 164JNIEXPORT jlong JNICALL 165JVM_FreeMemory(void); 166 167JNIEXPORT jlong JNICALL 168JVM_MaxMemory(void); 169 170JNIEXPORT jint JNICALL 171JVM_ActiveProcessorCount(void); 172 173JNIEXPORT void * JNICALL 174JVM_LoadLibrary(const char *name); 175 176JNIEXPORT void JNICALL 177JVM_UnloadLibrary(void * handle); 178 179JNIEXPORT void * JNICALL 180JVM_FindLibraryEntry(void *handle, const char *name); 181 182JNIEXPORT jboolean JNICALL 183JVM_IsSupportedJNIVersion(jint version); 184 185/* 186 * java.lang.Float and java.lang.Double 187 */ 188JNIEXPORT jboolean JNICALL 189JVM_IsNaN(jdouble d); 190 191/* 192 * java.lang.Throwable 193 */ 194JNIEXPORT void JNICALL 195JVM_FillInStackTrace(JNIEnv *env, jobject throwable); 196 197JNIEXPORT void JNICALL 198JVM_PrintStackTrace(JNIEnv *env, jobject throwable, jobject printable); 199 200JNIEXPORT jint JNICALL 201JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable); 202 203JNIEXPORT jobject JNICALL 204JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index); 205 206/* 207 * java.lang.Compiler 208 */ 209JNIEXPORT void JNICALL 210JVM_InitializeCompiler (JNIEnv *env, jclass compCls); 211 212JNIEXPORT jboolean JNICALL 213JVM_IsSilentCompiler(JNIEnv *env, jclass compCls); 214 215JNIEXPORT jboolean JNICALL 216JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls); 217 218JNIEXPORT jboolean JNICALL 219JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname); 220 221JNIEXPORT jobject JNICALL 222JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg); 223 224JNIEXPORT void JNICALL 225JVM_EnableCompiler(JNIEnv *env, jclass compCls); 226 227JNIEXPORT void JNICALL 228JVM_DisableCompiler(JNIEnv *env, jclass compCls); 229 230/* 231 * java.lang.Thread 232 */ 233JNIEXPORT void JNICALL 234JVM_StartThread(JNIEnv *env, jobject thread); 235 236JNIEXPORT void JNICALL 237JVM_StopThread(JNIEnv *env, jobject thread, jobject exception); 238 239JNIEXPORT jboolean JNICALL 240JVM_IsThreadAlive(JNIEnv *env, jobject thread); 241 242JNIEXPORT void JNICALL 243JVM_SuspendThread(JNIEnv *env, jobject thread); 244 245JNIEXPORT void JNICALL 246JVM_ResumeThread(JNIEnv *env, jobject thread); 247 248JNIEXPORT void JNICALL 249JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio); 250 251JNIEXPORT void JNICALL 252JVM_Yield(JNIEnv *env, jclass threadClass); 253 254JNIEXPORT void JNICALL 255JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis); 256 257JNIEXPORT jobject JNICALL 258JVM_CurrentThread(JNIEnv *env, jclass threadClass); 259 260JNIEXPORT jint JNICALL 261JVM_CountStackFrames(JNIEnv *env, jobject thread); 262 263JNIEXPORT void JNICALL 264JVM_Interrupt(JNIEnv *env, jobject thread); 265 266JNIEXPORT jboolean JNICALL 267JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted); 268 269JNIEXPORT jboolean JNICALL 270JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj); 271 272JNIEXPORT void JNICALL 273JVM_DumpAllStacks(JNIEnv *env, jclass unused); 274 275JNIEXPORT jobjectArray JNICALL 276JVM_GetAllThreads(JNIEnv *env, jclass dummy); 277 278/* getStackTrace() and getAllStackTraces() method */ 279JNIEXPORT jobjectArray JNICALL 280JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads); 281 282/* 283 * java.lang.SecurityManager 284 */ 285JNIEXPORT jclass JNICALL 286JVM_CurrentLoadedClass(JNIEnv *env); 287 288JNIEXPORT jobject JNICALL 289JVM_CurrentClassLoader(JNIEnv *env); 290 291JNIEXPORT jobjectArray JNICALL 292JVM_GetClassContext(JNIEnv *env); 293 294JNIEXPORT jint JNICALL 295JVM_ClassDepth(JNIEnv *env, jstring name); 296 297JNIEXPORT jint JNICALL 298JVM_ClassLoaderDepth(JNIEnv *env); 299 300/* 301 * java.lang.Package 302 */ 303JNIEXPORT jstring JNICALL 304JVM_GetSystemPackage(JNIEnv *env, jstring name); 305 306JNIEXPORT jobjectArray JNICALL 307JVM_GetSystemPackages(JNIEnv *env); 308 309/* 310 * java.io.ObjectInputStream 311 */ 312JNIEXPORT jobject JNICALL 313JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass, 314 jclass initClass); 315 316JNIEXPORT jobject JNICALL 317JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, 318 jint length); 319 320JNIEXPORT jobject JNICALL 321JVM_LatestUserDefinedLoader(JNIEnv *env); 322 323/* 324 * This function has been deprecated and should not be considered 325 * part of the specified JVM interface. 326 */ 327JNIEXPORT jclass JNICALL 328JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass, 329 jstring currClassName); 330 331/* 332 * java.lang.reflect.Array 333 */ 334JNIEXPORT jint JNICALL 335JVM_GetArrayLength(JNIEnv *env, jobject arr); 336 337JNIEXPORT jobject JNICALL 338JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index); 339 340JNIEXPORT jvalue JNICALL 341JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode); 342 343JNIEXPORT void JNICALL 344JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val); 345 346JNIEXPORT void JNICALL 347JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, 348 unsigned char vCode); 349 350JNIEXPORT jobject JNICALL 351JVM_NewArray(JNIEnv *env, jclass eltClass, jint length); 352 353JNIEXPORT jobject JNICALL 354JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim); 355 356/* 357 * java.lang.Class and java.lang.ClassLoader 358 */ 359/* 360 * Returns the class in which the code invoking the native method 361 * belongs. 362 * 363 * Note that in JDK 1.1, native methods did not create a frame. 364 * In 1.2, they do. Therefore native methods like Class.forName 365 * can no longer look at the current frame for the caller class. 366 */ 367JNIEXPORT jclass JNICALL 368JVM_GetCallerClass(JNIEnv *env, int n); 369 370/* 371 * Find primitive classes 372 * utf: class name 373 */ 374JNIEXPORT jclass JNICALL 375JVM_FindPrimitiveClass(JNIEnv *env, const char *utf); 376 377/* 378 * Link the class 379 */ 380JNIEXPORT void JNICALL 381JVM_ResolveClass(JNIEnv *env, jclass cls); 382 383/* 384 * Find a class from a given class loader. Throw ClassNotFoundException 385 * or NoClassDefFoundError depending on the value of the last 386 * argument. 387 */ 388JNIEXPORT jclass JNICALL 389JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init, 390 jobject loader, jboolean throwError); 391 392/* 393 * Find a class from a boot class loader. Returns NULL if class not found. 394 */ 395JNIEXPORT jclass JNICALL 396JVM_FindClassFromBootLoader(JNIEnv *env, const char *name); 397 398/* 399 * Find a class from a given class. 400 */ 401JNIEXPORT jclass JNICALL 402JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init, 403 jclass from); 404 405/* Find a loaded class cached by the VM */ 406JNIEXPORT jclass JNICALL 407JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name); 408 409/* Define a class */ 410JNIEXPORT jclass JNICALL 411JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, 412 jsize len, jobject pd); 413 414/* Define a class with a source (added in JDK1.5) */ 415JNIEXPORT jclass JNICALL 416JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, 417 const jbyte *buf, jsize len, jobject pd, 418 const char *source); 419 420/* Define a class with a source with conditional verification (added HSX 14) 421 * -Xverify:all will verify anyway, -Xverify:none will not verify, 422 * -Xverify:remote (default) will obey this conditional 423 * i.e. true = should_verify_class 424 */ 425JNIEXPORT jclass JNICALL 426JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, 427 jobject loader, const jbyte *buf, 428 jsize len, jobject pd, const char *source, 429 jboolean verify); 430 431/* Define a class with a source (MLVM) */ 432JNIEXPORT jclass JNICALL 433JVM_DefineClassWithCP(JNIEnv *env, const char *name, jobject loader, 434 const jbyte *buf, jsize len, jobject pd, 435 const char *source, 436 // same args as JVM_DefineClassWithSource to this point 437 jobjectArray constants); 438 439/* 440 * Reflection support functions 441 */ 442 443JNIEXPORT jstring JNICALL 444JVM_GetClassName(JNIEnv *env, jclass cls); 445 446JNIEXPORT jobjectArray JNICALL 447JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 448 449JNIEXPORT jobject JNICALL 450JVM_GetClassLoader(JNIEnv *env, jclass cls); 451 452JNIEXPORT jboolean JNICALL 453JVM_IsInterface(JNIEnv *env, jclass cls); 454 455JNIEXPORT jobjectArray JNICALL 456JVM_GetClassSigners(JNIEnv *env, jclass cls); 457 458JNIEXPORT void JNICALL 459JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 460 461JNIEXPORT jobject JNICALL 462JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 463 464JNIEXPORT void JNICALL 465JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain); 466 467JNIEXPORT jboolean JNICALL 468JVM_IsArrayClass(JNIEnv *env, jclass cls); 469 470JNIEXPORT jboolean JNICALL 471JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 472 473JNIEXPORT jclass JNICALL 474JVM_GetComponentType(JNIEnv *env, jclass cls); 475 476JNIEXPORT jint JNICALL 477JVM_GetClassModifiers(JNIEnv *env, jclass cls); 478 479JNIEXPORT jobjectArray JNICALL 480JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 481 482JNIEXPORT jclass JNICALL 483JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 484 485/* Generics support (JDK 1.5) */ 486JNIEXPORT jstring JNICALL 487JVM_GetClassSignature(JNIEnv *env, jclass cls); 488 489/* Annotations support (JDK 1.5) */ 490JNIEXPORT jbyteArray JNICALL 491JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 492 493/* Annotations support (JDK 1.6) */ 494 495// field is a handle to a java.lang.reflect.Field object 496JNIEXPORT jbyteArray JNICALL 497JVM_GetFieldAnnotations(JNIEnv *env, jobject field); 498 499// method is a handle to a java.lang.reflect.Method object 500JNIEXPORT jbyteArray JNICALL 501JVM_GetMethodAnnotations(JNIEnv *env, jobject method); 502 503// method is a handle to a java.lang.reflect.Method object 504JNIEXPORT jbyteArray JNICALL 505JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method); 506 507// method is a handle to a java.lang.reflect.Method object 508JNIEXPORT jbyteArray JNICALL 509JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method); 510 511 512/* 513 * New (JDK 1.4) reflection implementation 514 */ 515 516JNIEXPORT jobjectArray JNICALL 517JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 518 519JNIEXPORT jobjectArray JNICALL 520JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 521 522JNIEXPORT jobjectArray JNICALL 523JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 524 525/* Differs from JVM_GetClassModifiers in treatment of inner classes. 526 This returns the access flags for the class as specified in the 527 class file rather than searching the InnerClasses attribute (if 528 present) to find the source-level access flags. Only the values of 529 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 530 valid. */ 531JNIEXPORT jint JNICALL 532JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 533 534/* 535 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 536 */ 537 538JNIEXPORT jobject JNICALL 539JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 540 541JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 542(JNIEnv *env, jobject unused, jobject jcpool); 543 544JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 545(JNIEnv *env, jobject unused, jobject jcpool, jint index); 546 547JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 548(JNIEnv *env, jobject unused, jobject jcpool, jint index); 549 550JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 551(JNIEnv *env, jobject unused, jobject jcpool, jint index); 552 553JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 554(JNIEnv *env, jobject unused, jobject jcpool, jint index); 555 556JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 557(JNIEnv *env, jobject unused, jobject jcpool, jint index); 558 559JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 560(JNIEnv *env, jobject unused, jobject jcpool, jint index); 561 562JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 563(JNIEnv *env, jobject unused, jobject jcpool, jint index); 564 565JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 566(JNIEnv *env, jobject unused, jobject jcpool, jint index); 567 568JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 569(JNIEnv *env, jobject unused, jobject jcpool, jint index); 570 571JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 572(JNIEnv *env, jobject unused, jobject jcpool, jint index); 573 574JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 575(JNIEnv *env, jobject unused, jobject jcpool, jint index); 576 577JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 578(JNIEnv *env, jobject unused, jobject jcpool, jint index); 579 580JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 581(JNIEnv *env, jobject unused, jobject jcpool, jint index); 582 583/* 584 * java.security.* 585 */ 586 587JNIEXPORT jobject JNICALL 588JVM_DoPrivileged(JNIEnv *env, jclass cls, 589 jobject action, jobject context, jboolean wrapException); 590 591JNIEXPORT jobject JNICALL 592JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 593 594JNIEXPORT jobject JNICALL 595JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 596 597/* 598 * Signal support, used to implement the shutdown sequence. Every VM must 599 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 600 * (^C) and the latter for external termination (kill, system shutdown, etc.). 601 * Other platform-dependent signal values may also be supported. 602 */ 603 604JNIEXPORT void * JNICALL 605JVM_RegisterSignal(jint sig, void *handler); 606 607JNIEXPORT jboolean JNICALL 608JVM_RaiseSignal(jint sig); 609 610JNIEXPORT jint JNICALL 611JVM_FindSignal(const char *name); 612 613/* 614 * Retrieve the assertion directives for the specified class. 615 */ 616JNIEXPORT jboolean JNICALL 617JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 618 619/* 620 * Retrieve the assertion directives from the VM. 621 */ 622JNIEXPORT jobject JNICALL 623JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 624 625/* 626 * sun.misc.AtomicLong 627 */ 628JNIEXPORT jboolean JNICALL 629JVM_SupportsCX8(void); 630 631JNIEXPORT jboolean JNICALL 632JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal); 633 634/* 635 * com.sun.dtrace.jsdt support 636 */ 637 638#define JVM_TRACING_DTRACE_VERSION 1 639 640/* 641 * Structure to pass one probe description to JVM. 642 * 643 * The VM will overwrite the definition of the referenced method with 644 * code that will fire the probe. 645 */ 646typedef struct { 647 jmethodID method; 648 jstring function; 649 jstring name; 650 void* reserved[4]; // for future use 651} JVM_DTraceProbe; 652 653/** 654 * Encapsulates the stability ratings for a DTrace provider field 655 */ 656typedef struct { 657 jint nameStability; 658 jint dataStability; 659 jint dependencyClass; 660} JVM_DTraceInterfaceAttributes; 661 662/* 663 * Structure to pass one provider description to JVM 664 */ 665typedef struct { 666 jstring name; 667 JVM_DTraceProbe* probes; 668 jint probe_count; 669 JVM_DTraceInterfaceAttributes providerAttributes; 670 JVM_DTraceInterfaceAttributes moduleAttributes; 671 JVM_DTraceInterfaceAttributes functionAttributes; 672 JVM_DTraceInterfaceAttributes nameAttributes; 673 JVM_DTraceInterfaceAttributes argsAttributes; 674 void* reserved[4]; // for future use 675} JVM_DTraceProvider; 676 677/* 678 * Get the version number the JVM was built with 679 */ 680JNIEXPORT jint JNICALL 681JVM_DTraceGetVersion(JNIEnv* env); 682 683/* 684 * Register new probe with given signature, return global handle 685 * 686 * The version passed in is the version that the library code was 687 * built with. 688 */ 689JNIEXPORT jlong JNICALL 690JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 691 jint providers_count, JVM_DTraceProvider* providers); 692 693/* 694 * Check JSDT probe 695 */ 696JNIEXPORT jboolean JNICALL 697JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 698 699/* 700 * Destroy custom DOF 701 */ 702JNIEXPORT void JNICALL 703JVM_DTraceDispose(JNIEnv* env, jlong handle); 704 705/* 706 * Check to see if DTrace is supported by OS 707 */ 708JNIEXPORT jboolean JNICALL 709JVM_DTraceIsSupported(JNIEnv* env); 710 711/************************************************************************* 712 PART 2: Support for the Verifier and Class File Format Checker 713 ************************************************************************/ 714/* 715 * Return the class name in UTF format. The result is valid 716 * until JVM_ReleaseUTf is called. 717 * 718 * The caller must treat the string as a constant and not modify it 719 * in any way. 720 */ 721JNIEXPORT const char * JNICALL 722JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 723 724/* 725 * Returns the constant pool types in the buffer provided by "types." 726 */ 727JNIEXPORT void JNICALL 728JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 729 730/* 731 * Returns the number of Constant Pool entries. 732 */ 733JNIEXPORT jint JNICALL 734JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 735 736/* 737 * Returns the number of *declared* fields or methods. 738 */ 739JNIEXPORT jint JNICALL 740JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 741 742JNIEXPORT jint JNICALL 743JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 744 745/* 746 * Returns the CP indexes of exceptions raised by a given method. 747 * Places the result in the given buffer. 748 * 749 * The method is identified by method_index. 750 */ 751JNIEXPORT void JNICALL 752JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 753 unsigned short *exceptions); 754/* 755 * Returns the number of exceptions raised by a given method. 756 * The method is identified by method_index. 757 */ 758JNIEXPORT jint JNICALL 759JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 760 761/* 762 * Returns the byte code sequence of a given method. 763 * Places the result in the given buffer. 764 * 765 * The method is identified by method_index. 766 */ 767JNIEXPORT void JNICALL 768JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 769 unsigned char *code); 770 771/* 772 * Returns the length of the byte code sequence of a given method. 773 * The method is identified by method_index. 774 */ 775JNIEXPORT jint JNICALL 776JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 777 778/* 779 * A structure used to a capture exception table entry in a Java method. 780 */ 781typedef struct { 782 jint start_pc; 783 jint end_pc; 784 jint handler_pc; 785 jint catchType; 786} JVM_ExceptionTableEntryType; 787 788/* 789 * Returns the exception table entry at entry_index of a given method. 790 * Places the result in the given buffer. 791 * 792 * The method is identified by method_index. 793 */ 794JNIEXPORT void JNICALL 795JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 796 jint entry_index, 797 JVM_ExceptionTableEntryType *entry); 798 799/* 800 * Returns the length of the exception table of a given method. 801 * The method is identified by method_index. 802 */ 803JNIEXPORT jint JNICALL 804JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 805 806/* 807 * Returns the modifiers of a given field. 808 * The field is identified by field_index. 809 */ 810JNIEXPORT jint JNICALL 811JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 812 813/* 814 * Returns the modifiers of a given method. 815 * The method is identified by method_index. 816 */ 817JNIEXPORT jint JNICALL 818JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 819 820/* 821 * Returns the number of local variables of a given method. 822 * The method is identified by method_index. 823 */ 824JNIEXPORT jint JNICALL 825JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 826 827/* 828 * Returns the number of arguments (including this pointer) of a given method. 829 * The method is identified by method_index. 830 */ 831JNIEXPORT jint JNICALL 832JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 833 834/* 835 * Returns the maximum amount of stack (in words) used by a given method. 836 * The method is identified by method_index. 837 */ 838JNIEXPORT jint JNICALL 839JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 840 841/* 842 * Is a given method a constructor. 843 * The method is identified by method_index. 844 */ 845JNIEXPORT jboolean JNICALL 846JVM_IsConstructorIx(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 */ 855JNIEXPORT const char * JNICALL 856JVM_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 */ 865JNIEXPORT const char * JNICALL 866JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 867 868/* 869 * Returns the name of the field refered 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 */ 878JNIEXPORT const char * JNICALL 879JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 880 881/* 882 * Returns the name of the method refered 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 */ 891JNIEXPORT const char * JNICALL 892JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 893 894/* 895 * Returns the signature of the method refered 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 */ 904JNIEXPORT const char * JNICALL 905JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 906 907/* 908 * Returns the signature of the field refered 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 */ 917JNIEXPORT const char * JNICALL 918JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 919 920/* 921 * Returns the class name refered 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 */ 929JNIEXPORT const char * JNICALL 930JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 931 932/* 933 * Returns the class name refered 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 */ 943JNIEXPORT const char * JNICALL 944JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 945 946/* 947 * Returns the class name refered 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 */ 958JNIEXPORT const char * JNICALL 959JVM_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 */ 970JNIEXPORT jint JNICALL 971JVM_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 */ 979JNIEXPORT jint JNICALL 980JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 981 982/* 983 * Releases the UTF string obtained from the VM. 984 */ 985JNIEXPORT void JNICALL 986JVM_ReleaseUTF(const char *utf); 987 988/* 989 * Compare if two classes are in the same package. 990 */ 991JNIEXPORT jboolean JNICALL 992JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 993 994/* Constants in class files */ 995 996#define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */ 997#define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */ 998#define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */ 999#define JVM_ACC_STATIC 0x0008 /* instance variable is static */ 1000#define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */ 1001#define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */ 1002#define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */ 1003#define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */ 1004#define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */ 1005#define JVM_ACC_TRANSIENT 0x0080 /* not persistent */ 1006#define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */ 1007#define JVM_ACC_NATIVE 0x0100 /* implemented in C */ 1008#define JVM_ACC_INTERFACE 0x0200 /* class is an interface */ 1009#define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */ 1010#define JVM_ACC_STRICT 0x0800 /* strict floating point */ 1011#define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */ 1012#define JVM_ACC_ANNOTATION 0x2000 /* annotation type */ 1013#define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */ 1014 1015#define JVM_ACC_PUBLIC_BIT 0 1016#define JVM_ACC_PRIVATE_BIT 1 1017#define JVM_ACC_PROTECTED_BIT 2 1018#define JVM_ACC_STATIC_BIT 3 1019#define JVM_ACC_FINAL_BIT 4 1020#define JVM_ACC_SYNCHRONIZED_BIT 5 1021#define JVM_ACC_SUPER_BIT 5 1022#define JVM_ACC_VOLATILE_BIT 6 1023#define JVM_ACC_BRIDGE_BIT 6 1024#define JVM_ACC_TRANSIENT_BIT 7 1025#define JVM_ACC_VARARGS_BIT 7 1026#define JVM_ACC_NATIVE_BIT 8 1027#define JVM_ACC_INTERFACE_BIT 9 1028#define JVM_ACC_ABSTRACT_BIT 10 1029#define JVM_ACC_STRICT_BIT 11 1030#define JVM_ACC_SYNTHETIC_BIT 12 1031#define JVM_ACC_ANNOTATION_BIT 13 1032#define JVM_ACC_ENUM_BIT 14 1033 1034// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java 1035enum { 1036 JVM_CONSTANT_Utf8 = 1, 1037 JVM_CONSTANT_Unicode, /* unused */ 1038 JVM_CONSTANT_Integer, 1039 JVM_CONSTANT_Float, 1040 JVM_CONSTANT_Long, 1041 JVM_CONSTANT_Double, 1042 JVM_CONSTANT_Class, 1043 JVM_CONSTANT_String, 1044 JVM_CONSTANT_Fieldref, 1045 JVM_CONSTANT_Methodref, 1046 JVM_CONSTANT_InterfaceMethodref, 1047 JVM_CONSTANT_NameAndType 1048}; 1049 1050/* Used in the newarray instruction. */ 1051 1052#define JVM_T_BOOLEAN 4 1053#define JVM_T_CHAR 5 1054#define JVM_T_FLOAT 6 1055#define JVM_T_DOUBLE 7 1056#define JVM_T_BYTE 8 1057#define JVM_T_SHORT 9 1058#define JVM_T_INT 10 1059#define JVM_T_LONG 11 1060 1061/* JVM method signatures */ 1062 1063#define JVM_SIGNATURE_ARRAY '[' 1064#define JVM_SIGNATURE_BYTE 'B' 1065#define JVM_SIGNATURE_CHAR 'C' 1066#define JVM_SIGNATURE_CLASS 'L' 1067#define JVM_SIGNATURE_ENDCLASS ';' 1068#define JVM_SIGNATURE_ENUM 'E' 1069#define JVM_SIGNATURE_FLOAT 'F' 1070#define JVM_SIGNATURE_DOUBLE 'D' 1071#define JVM_SIGNATURE_FUNC '(' 1072#define JVM_SIGNATURE_ENDFUNC ')' 1073#define JVM_SIGNATURE_INT 'I' 1074#define JVM_SIGNATURE_LONG 'J' 1075#define JVM_SIGNATURE_SHORT 'S' 1076#define JVM_SIGNATURE_VOID 'V' 1077#define JVM_SIGNATURE_BOOLEAN 'Z' 1078 1079/* 1080 * A function defined by the byte-code verifier and called by the VM. 1081 * This is not a function implemented in the VM. 1082 * 1083 * Returns JNI_FALSE if verification fails. A detailed error message 1084 * will be places in msg_buf, whose length is specified by buf_len. 1085 */ 1086typedef jboolean (*verifier_fn_t)(JNIEnv *env, 1087 jclass cb, 1088 char * msg_buf, 1089 jint buf_len); 1090 1091 1092/* 1093 * Support for a VM-independent class format checker. 1094 */ 1095typedef struct { 1096 unsigned long code; /* byte code */ 1097 unsigned long excs; /* exceptions */ 1098 unsigned long etab; /* catch table */ 1099 unsigned long lnum; /* line number */ 1100 unsigned long lvar; /* local vars */ 1101} method_size_info; 1102 1103typedef struct { 1104 unsigned int constants; /* constant pool */ 1105 unsigned int fields; 1106 unsigned int methods; 1107 unsigned int interfaces; 1108 unsigned int fields2; /* number of static 2-word fields */ 1109 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1110 1111 method_size_info clinit; /* memory used in clinit */ 1112 method_size_info main; /* used everywhere else */ 1113} class_size_info; 1114 1115/* 1116 * Functions defined in libjava.so to perform string conversions. 1117 * 1118 */ 1119 1120typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1121 1122typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b); 1123 1124/* This is the function defined in libjava.so that performs class 1125 * format checks. This functions fills in size information about 1126 * the class file and returns: 1127 * 1128 * 0: good 1129 * -1: out of memory 1130 * -2: bad format 1131 * -3: unsupported version 1132 * -4: bad class name 1133 */ 1134 1135typedef jint (*check_format_fn_t)(char *class_name, 1136 unsigned char *data, 1137 unsigned int data_size, 1138 class_size_info *class_size, 1139 char *message_buffer, 1140 jint buffer_length, 1141 jboolean measure_only, 1142 jboolean check_relaxed); 1143 1144#define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1145 JVM_ACC_FINAL | \ 1146 JVM_ACC_SUPER | \ 1147 JVM_ACC_INTERFACE | \ 1148 JVM_ACC_ABSTRACT | \ 1149 JVM_ACC_ANNOTATION | \ 1150 JVM_ACC_ENUM | \ 1151 JVM_ACC_SYNTHETIC) 1152 1153#define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1154 JVM_ACC_PRIVATE | \ 1155 JVM_ACC_PROTECTED | \ 1156 JVM_ACC_STATIC | \ 1157 JVM_ACC_FINAL | \ 1158 JVM_ACC_VOLATILE | \ 1159 JVM_ACC_TRANSIENT | \ 1160 JVM_ACC_ENUM | \ 1161 JVM_ACC_SYNTHETIC) 1162 1163#define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1164 JVM_ACC_PRIVATE | \ 1165 JVM_ACC_PROTECTED | \ 1166 JVM_ACC_STATIC | \ 1167 JVM_ACC_FINAL | \ 1168 JVM_ACC_SYNCHRONIZED | \ 1169 JVM_ACC_BRIDGE | \ 1170 JVM_ACC_VARARGS | \ 1171 JVM_ACC_NATIVE | \ 1172 JVM_ACC_ABSTRACT | \ 1173 JVM_ACC_STRICT | \ 1174 JVM_ACC_SYNTHETIC) 1175 1176/* 1177 * This is the function defined in libjava.so to perform path 1178 * canonicalization. VM call this function before opening jar files 1179 * to load system classes. 1180 * 1181 */ 1182 1183typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1184 1185/************************************************************************* 1186 PART 3: I/O and Network Support 1187 ************************************************************************/ 1188 1189/* Note that the JVM IO functions are expected to return JVM_IO_ERR 1190 * when there is any kind of error. The caller can then use the 1191 * platform specific support (e.g., errno) to get the detailed 1192 * error info. The JVM_GetLastErrorString procedure may also be used 1193 * to obtain a descriptive error string. 1194 */ 1195#define JVM_IO_ERR (-1) 1196 1197/* For interruptible IO. Returning JVM_IO_INTR indicates that an IO 1198 * operation has been disrupted by Thread.interrupt. There are a 1199 * number of technical difficulties related to interruptible IO that 1200 * need to be solved. For example, most existing programs do not handle 1201 * InterruptedIOExceptions specially, they simply treat those as any 1202 * IOExceptions, which typically indicate fatal errors. 1203 * 1204 * There are also two modes of operation for interruptible IO. In the 1205 * resumption mode, an interrupted IO operation is guaranteed not to 1206 * have any side-effects, and can be restarted. In the termination mode, 1207 * an interrupted IO operation corrupts the underlying IO stream, so 1208 * that the only reasonable operation on an interrupted stream is to 1209 * close that stream. The resumption mode seems to be impossible to 1210 * implement on Win32 and Solaris. Implementing the termination mode is 1211 * easier, but it's not clear that's the right semantics. 1212 * 1213 * Interruptible IO is not supported on Win32.It can be enabled/disabled 1214 * using a compile-time flag on Solaris. Third-party JVM ports do not 1215 * need to implement interruptible IO. 1216 */ 1217#define JVM_IO_INTR (-2) 1218 1219/* Write a string into the given buffer, in the platform's local encoding, 1220 * that describes the most recent system-level error to occur in this thread. 1221 * Return the length of the string or zero if no error occurred. 1222 */ 1223JNIEXPORT jint JNICALL 1224JVM_GetLastErrorString(char *buf, int len); 1225 1226/* 1227 * Convert a pathname into native format. This function does syntactic 1228 * cleanup, such as removing redundant separator characters. It modifies 1229 * the given pathname string in place. 1230 */ 1231JNIEXPORT char * JNICALL 1232JVM_NativePath(char *); 1233 1234/* 1235 * JVM I/O error codes 1236 */ 1237#define JVM_EEXIST -100 1238 1239/* 1240 * Open a file descriptor. This function returns a negative error code 1241 * on error, and a non-negative integer that is the file descriptor on 1242 * success. 1243 */ 1244JNIEXPORT jint JNICALL 1245JVM_Open(const char *fname, jint flags, jint mode); 1246 1247/* 1248 * Close a file descriptor. This function returns -1 on error, and 0 1249 * on success. 1250 * 1251 * fd the file descriptor to close. 1252 */ 1253JNIEXPORT jint JNICALL 1254JVM_Close(jint fd); 1255 1256/* 1257 * Read data from a file decriptor into a char array. 1258 * 1259 * fd the file descriptor to read from. 1260 * buf the buffer where to put the read data. 1261 * nbytes the number of bytes to read. 1262 * 1263 * This function returns -1 on error, and 0 on success. 1264 */ 1265JNIEXPORT jint JNICALL 1266JVM_Read(jint fd, char *buf, jint nbytes); 1267 1268/* 1269 * Write data from a char array to a file decriptor. 1270 * 1271 * fd the file descriptor to read from. 1272 * buf the buffer from which to fetch the data. 1273 * nbytes the number of bytes to write. 1274 * 1275 * This function returns -1 on error, and 0 on success. 1276 */ 1277JNIEXPORT jint JNICALL 1278JVM_Write(jint fd, char *buf, jint nbytes); 1279 1280/* 1281 * Returns the number of bytes available for reading from a given file 1282 * descriptor 1283 */ 1284JNIEXPORT jint JNICALL 1285JVM_Available(jint fd, jlong *pbytes); 1286 1287/* 1288 * Move the file descriptor pointer from whence by offset. 1289 * 1290 * fd the file descriptor to move. 1291 * offset the number of bytes to move it by. 1292 * whence the start from where to move it. 1293 * 1294 * This function returns the resulting pointer location. 1295 */ 1296JNIEXPORT jlong JNICALL 1297JVM_Lseek(jint fd, jlong offset, jint whence); 1298 1299/* 1300 * Set the length of the file associated with the given descriptor to the given 1301 * length. If the new length is longer than the current length then the file 1302 * is extended; the contents of the extended portion are not defined. The 1303 * value of the file pointer is undefined after this procedure returns. 1304 */ 1305JNIEXPORT jint JNICALL 1306JVM_SetLength(jint fd, jlong length); 1307 1308/* 1309 * Synchronize the file descriptor's in memory state with that of the 1310 * physical device. Return of -1 is an error, 0 is OK. 1311 */ 1312JNIEXPORT jint JNICALL 1313JVM_Sync(jint fd); 1314 1315/* 1316 * Networking library support 1317 */ 1318 1319JNIEXPORT jint JNICALL 1320JVM_InitializeSocketLibrary(void); 1321 1322struct sockaddr; 1323 1324JNIEXPORT jint JNICALL 1325JVM_Socket(jint domain, jint type, jint protocol); 1326 1327JNIEXPORT jint JNICALL 1328JVM_SocketClose(jint fd); 1329 1330JNIEXPORT jint JNICALL 1331JVM_SocketShutdown(jint fd, jint howto); 1332 1333JNIEXPORT jint JNICALL 1334JVM_Recv(jint fd, char *buf, jint nBytes, jint flags); 1335 1336JNIEXPORT jint JNICALL 1337JVM_Send(jint fd, char *buf, jint nBytes, jint flags); 1338 1339JNIEXPORT jint JNICALL 1340JVM_Timeout(int fd, long timeout); 1341 1342JNIEXPORT jint JNICALL 1343JVM_Listen(jint fd, jint count); 1344 1345JNIEXPORT jint JNICALL 1346JVM_Connect(jint fd, struct sockaddr *him, jint len); 1347 1348JNIEXPORT jint JNICALL 1349JVM_Bind(jint fd, struct sockaddr *him, jint len); 1350 1351JNIEXPORT jint JNICALL 1352JVM_Accept(jint fd, struct sockaddr *him, jint *len); 1353 1354JNIEXPORT jint JNICALL 1355JVM_RecvFrom(jint fd, char *buf, int nBytes, 1356 int flags, struct sockaddr *from, int *fromlen); 1357 1358JNIEXPORT jint JNICALL 1359JVM_SendTo(jint fd, char *buf, int len, 1360 int flags, struct sockaddr *to, int tolen); 1361 1362JNIEXPORT jint JNICALL 1363JVM_SocketAvailable(jint fd, jint *result); 1364 1365 1366JNIEXPORT jint JNICALL 1367JVM_GetSockName(jint fd, struct sockaddr *him, int *len); 1368 1369JNIEXPORT jint JNICALL 1370JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen); 1371 1372JNIEXPORT jint JNICALL 1373JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen); 1374 1375/* 1376 * These routines are only reentrant on Windows 1377 */ 1378 1379#ifdef _WINDOWS 1380 1381JNIEXPORT struct protoent * JNICALL 1382JVM_GetProtoByName(char* name); 1383 1384JNIEXPORT struct hostent* JNICALL 1385JVM_GetHostByAddr(const char* name, int len, int type); 1386 1387JNIEXPORT struct hostent* JNICALL 1388JVM_GetHostByName(char* name); 1389 1390#endif /* _WINDOWS */ 1391 1392JNIEXPORT int JNICALL 1393JVM_GetHostName(char* name, int namelen); 1394 1395/* 1396 * The standard printing functions supported by the Java VM. (Should they 1397 * be renamed to JVM_* in the future? 1398 */ 1399 1400/* 1401 * BE CAREFUL! The following functions do not implement the 1402 * full feature set of standard C printf formats. 1403 */ 1404int 1405jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1406 1407int 1408jio_snprintf(char *str, size_t count, const char *fmt, ...); 1409 1410int 1411jio_fprintf(FILE *, const char *fmt, ...); 1412 1413int 1414jio_vfprintf(FILE *, const char *fmt, va_list args); 1415 1416 1417JNIEXPORT void * JNICALL 1418JVM_RawMonitorCreate(void); 1419 1420JNIEXPORT void JNICALL 1421JVM_RawMonitorDestroy(void *mon); 1422 1423JNIEXPORT jint JNICALL 1424JVM_RawMonitorEnter(void *mon); 1425 1426JNIEXPORT void JNICALL 1427JVM_RawMonitorExit(void *mon); 1428 1429 1430#ifdef SUPPORT_OLD_REFLECTION 1431 1432/* 1433 * Support for old native code-based (pre-JDK 1.4) reflection implementation. 1434 * Disabled by default in the product build. 1435 * 1436 * See reflection.hpp for information on SUPPORT_OLD_REFLECTION 1437 */ 1438 1439/* 1440 * reflecting fields and methods. 1441 * which: 0 --- MEMBER_PUBLIC 1442 * 1 --- MEMBER_DECLARED 1443 * NOTE: absent in product build by default 1444 */ 1445 1446JNIEXPORT jobjectArray JNICALL 1447JVM_GetClassFields(JNIEnv *env, jclass cls, jint which); 1448 1449JNIEXPORT jobjectArray JNICALL 1450JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which); 1451 1452JNIEXPORT jobjectArray JNICALL 1453JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which); 1454 1455JNIEXPORT jobject JNICALL 1456JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which); 1457 1458JNIEXPORT jobject JNICALL 1459JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, 1460 jint which); 1461JNIEXPORT jobject JNICALL 1462JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, 1463 jint which); 1464 1465/* 1466 * Implements Class.newInstance 1467 */ 1468JNIEXPORT jobject JNICALL 1469JVM_NewInstance(JNIEnv *env, jclass cls); 1470 1471/* 1472 * java.lang.reflect.Field 1473 */ 1474JNIEXPORT jobject JNICALL 1475JVM_GetField(JNIEnv *env, jobject field, jobject obj); 1476 1477JNIEXPORT jvalue JNICALL 1478JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, 1479 unsigned char wCode); 1480 1481JNIEXPORT void JNICALL 1482JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val); 1483 1484JNIEXPORT void JNICALL 1485JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, 1486 unsigned char vCode); 1487 1488/* 1489 * java.lang.reflect.Method 1490 */ 1491JNIEXPORT jobject JNICALL 1492JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 1493 1494/* 1495 * java.lang.reflect.Constructor 1496 */ 1497JNIEXPORT jobject JNICALL 1498JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 1499 1500#endif /* SUPPORT_OLD_REFLECTION */ 1501 1502/* 1503 * java.lang.management support 1504 */ 1505JNIEXPORT void* JNICALL 1506JVM_GetManagement(jint version); 1507 1508/* 1509 * com.sun.tools.attach.VirtualMachine support 1510 * 1511 * Initialize the agent properties with the properties maintained in the VM. 1512 */ 1513JNIEXPORT jobject JNICALL 1514JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1515 1516/* Generics reflection support. 1517 * 1518 * Returns information about the given class's EnclosingMethod 1519 * attribute, if present, or null if the class had no enclosing 1520 * method. 1521 * 1522 * If non-null, the returned array contains three elements. Element 0 1523 * is the java.lang.Class of which the enclosing method is a member, 1524 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1525 * method's name and descriptor, respectively. 1526 */ 1527JNIEXPORT jobjectArray JNICALL 1528JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1529 1530/* 1531 * Java thread state support 1532 */ 1533enum { 1534 JAVA_THREAD_STATE_NEW = 0, 1535 JAVA_THREAD_STATE_RUNNABLE = 1, 1536 JAVA_THREAD_STATE_BLOCKED = 2, 1537 JAVA_THREAD_STATE_WAITING = 3, 1538 JAVA_THREAD_STATE_TIMED_WAITING = 4, 1539 JAVA_THREAD_STATE_TERMINATED = 5, 1540 JAVA_THREAD_STATE_COUNT = 6 1541}; 1542 1543/* 1544 * Returns an array of the threadStatus values representing the 1545 * given Java thread state. Returns NULL if the VM version is 1546 * incompatible with the JDK or doesn't support the given 1547 * Java thread state. 1548 */ 1549JNIEXPORT jintArray JNICALL 1550JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState); 1551 1552/* 1553 * Returns an array of the substate names representing the 1554 * given Java thread state. Returns NULL if the VM version is 1555 * incompatible with the JDK or the VM doesn't support 1556 * the given Java thread state. 1557 * values must be the jintArray returned from JVM_GetThreadStateValues 1558 * and javaThreadState. 1559 */ 1560JNIEXPORT jobjectArray JNICALL 1561JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values); 1562 1563/* ========================================================================= 1564 * The following defines a private JVM interface that the JDK can query 1565 * for the JVM version and capabilities. sun.misc.Version defines 1566 * the methods for getting the VM version and its capabilities. 1567 * 1568 * When a new bit is added, the following should be updated to provide 1569 * access to the new capability: 1570 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1571 * SDK: Version class 1572 * 1573 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1574 * JVM to query for the JDK version and capabilities. 1575 * 1576 * When a new bit is added, the following should be updated to provide 1577 * access to the new capability: 1578 * HS: JDK_Version class 1579 * SDK: JDK_GetVersionInfo0 1580 * 1581 * ========================================================================== 1582 */ 1583typedef struct { 1584 /* HotSpot Express VM version string: 1585 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>] 1586 */ 1587 unsigned int jvm_version; /* Consists of major.minor.0.build */ 1588 unsigned int update_version : 8; /* 0 in HotSpot Express VM */ 1589 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */ 1590 unsigned int reserved1 : 16; 1591 unsigned int reserved2; 1592 1593 /* The following bits represents JVM supports that JDK has dependency on. 1594 * JDK can use these bits to determine which JVM version 1595 * and support it has to maintain runtime compatibility. 1596 * 1597 * When a new bit is added in a minor or update release, make sure 1598 * the new bit is also added in the main/baseline. 1599 */ 1600 unsigned int is_attachable : 1; 1601 unsigned int is_kernel_jvm : 1; 1602 unsigned int : 30; 1603 unsigned int : 32; 1604 unsigned int : 32; 1605} jvm_version_info; 1606 1607#define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1608#define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1609// Micro version is 0 in HotSpot Express VM (set in jvm.cpp). 1610#define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1611/* Build number is available in all HotSpot Express VM builds. 1612 * It is defined in make/hotspot_version file. 1613 */ 1614#define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1615 1616JNIEXPORT void JNICALL 1617JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1618 1619typedef struct { 1620 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx 1621 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */ 1622 /* and build number (xx) */ 1623 unsigned int update_version : 8; /* Update release version (uu) */ 1624 unsigned int special_update_version : 8; /* Special update release version (c)*/ 1625 unsigned int reserved1 : 16; 1626 unsigned int reserved2; 1627 1628 /* The following bits represents new JDK supports that VM has dependency on. 1629 * VM implementation can use these bits to determine which JDK version 1630 * and support it has to maintain runtime compatibility. 1631 * 1632 * When a new bit is added in a minor or update release, make sure 1633 * the new bit is also added in the main/baseline. 1634 */ 1635 unsigned int thread_park_blocker : 1; 1636 unsigned int : 31; 1637 unsigned int : 32; 1638 unsigned int : 32; 1639} jdk_version_info; 1640 1641#define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1642#define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1643#define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1644 1645/* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN) 1646 * It will be zero for internal builds. 1647 */ 1648#define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1649 1650/* 1651 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1652 * that is dynamically looked up by JVM. 1653 */ 1654typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1655 1656/* 1657 * This structure is used by the launcher to get the default thread 1658 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1659 * version of 1.1. As it is not supported otherwise, it has been removed 1660 * from jni.h 1661 */ 1662typedef struct JDK1_1InitArgs { 1663 jint version; 1664 1665 char **properties; 1666 jint checkSource; 1667 jint nativeStackSize; 1668 jint javaStackSize; 1669 jint minHeapSize; 1670 jint maxHeapSize; 1671 jint verifyMode; 1672 char *classpath; 1673 1674 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1675 void (JNICALL *exit)(jint code); 1676 void (JNICALL *abort)(void); 1677 1678 jint enableClassGC; 1679 jint enableVerboseGC; 1680 jint disableAsyncGC; 1681 jint verbose; 1682 jboolean debugging; 1683 jint debugPort; 1684} JDK1_1InitArgs; 1685 1686#ifdef __cplusplus 1687} /* extern "C" */ 1688#endif /* __cplusplus */ 1689 1690#endif /* !_JAVASOFT_JVM_H_ */ 1691