jvm.h revision 948:89e0543e1737
10SN/A/* 2477SN/A * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. 30SN/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 40SN/A * 50SN/A * This code is free software; you can redistribute it and/or modify it 60SN/A * under the terms of the GNU General Public License version 2 only, as 7157SN/A * published by the Free Software Foundation. 80SN/A * 9157SN/A * This code is distributed in the hope that it will be useful, but WITHOUT 100SN/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 110SN/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 120SN/A * version 2 for more details (a copy is included in the LICENSE file that 130SN/A * accompanied this code). 140SN/A * 150SN/A * You should have received a copy of the GNU General Public License version 160SN/A * 2 along with this work; if not, write to the Free Software Foundation, 170SN/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 180SN/A * 190SN/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 200SN/A * CA 95054 USA or visit www.sun.com if you need additional information or 21157SN/A * have any questions. 22157SN/A * 23157SN/A */ 240SN/A 250SN/A#ifndef _JAVASOFT_JVM_H_ 260SN/A#define _JAVASOFT_JVM_H_ 270SN/A 280SN/A// HotSpot integration note: 290SN/A// 300SN/A// This file and jvm.h used with the JDK are identical, 310SN/A// except for the three includes removed below and the 320SN/A// SUPPORT_OLD_REFLECTION sections cut out of the JDK's jvm.h. 330SN/A 340SN/A// #include <sys/stat.h> 350SN/A// #include "jni.h" 360SN/A// #include "jvm_md.h" 370SN/A 380SN/A 390SN/A#ifdef __cplusplus 400SN/Aextern "C" { 410SN/A#endif 420SN/A 430SN/A/* 440SN/A * This file contains additional functions exported from the VM. 45477SN/A * These functions are complementary to the standard JNI support. 46477SN/A * There are three parts to this file: 470SN/A * 480SN/A * First, this file contains the VM-related functions needed by native 490SN/A * libraries in the standard Java API. For example, the java.lang.Object 500SN/A * class needs VM-level functions that wait for and notify monitors. 510SN/A * 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 (MLVM) */ 421JNIEXPORT jclass JNICALL 422JVM_DefineClassWithCP(JNIEnv *env, const char *name, jobject loader, 423 const jbyte *buf, jsize len, jobject pd, 424 const char *source, 425 // same args as JVM_DefineClassWithSource to this point 426 jobjectArray constants); 427 428/* 429 * Reflection support functions 430 */ 431 432JNIEXPORT jstring JNICALL 433JVM_GetClassName(JNIEnv *env, jclass cls); 434 435JNIEXPORT jobjectArray JNICALL 436JVM_GetClassInterfaces(JNIEnv *env, jclass cls); 437 438JNIEXPORT jobject JNICALL 439JVM_GetClassLoader(JNIEnv *env, jclass cls); 440 441JNIEXPORT jboolean JNICALL 442JVM_IsInterface(JNIEnv *env, jclass cls); 443 444JNIEXPORT jobjectArray JNICALL 445JVM_GetClassSigners(JNIEnv *env, jclass cls); 446 447JNIEXPORT void JNICALL 448JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers); 449 450JNIEXPORT jobject JNICALL 451JVM_GetProtectionDomain(JNIEnv *env, jclass cls); 452 453JNIEXPORT void JNICALL 454JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain); 455 456JNIEXPORT jboolean JNICALL 457JVM_IsArrayClass(JNIEnv *env, jclass cls); 458 459JNIEXPORT jboolean JNICALL 460JVM_IsPrimitiveClass(JNIEnv *env, jclass cls); 461 462JNIEXPORT jclass JNICALL 463JVM_GetComponentType(JNIEnv *env, jclass cls); 464 465JNIEXPORT jint JNICALL 466JVM_GetClassModifiers(JNIEnv *env, jclass cls); 467 468JNIEXPORT jobjectArray JNICALL 469JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass); 470 471JNIEXPORT jclass JNICALL 472JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass); 473 474/* Generics support (JDK 1.5) */ 475JNIEXPORT jstring JNICALL 476JVM_GetClassSignature(JNIEnv *env, jclass cls); 477 478/* Annotations support (JDK 1.5) */ 479JNIEXPORT jbyteArray JNICALL 480JVM_GetClassAnnotations(JNIEnv *env, jclass cls); 481 482/* Annotations support (JDK 1.6) */ 483 484// field is a handle to a java.lang.reflect.Field object 485JNIEXPORT jbyteArray JNICALL 486JVM_GetFieldAnnotations(JNIEnv *env, jobject field); 487 488// method is a handle to a java.lang.reflect.Method object 489JNIEXPORT jbyteArray JNICALL 490JVM_GetMethodAnnotations(JNIEnv *env, jobject method); 491 492// method is a handle to a java.lang.reflect.Method object 493JNIEXPORT jbyteArray JNICALL 494JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method); 495 496// method is a handle to a java.lang.reflect.Method object 497JNIEXPORT jbyteArray JNICALL 498JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method); 499 500 501/* 502 * New (JDK 1.4) reflection implementation 503 */ 504 505JNIEXPORT jobjectArray JNICALL 506JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly); 507 508JNIEXPORT jobjectArray JNICALL 509JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly); 510 511JNIEXPORT jobjectArray JNICALL 512JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly); 513 514/* Differs from JVM_GetClassModifiers in treatment of inner classes. 515 This returns the access flags for the class as specified in the 516 class file rather than searching the InnerClasses attribute (if 517 present) to find the source-level access flags. Only the values of 518 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be 519 valid. */ 520JNIEXPORT jint JNICALL 521JVM_GetClassAccessFlags(JNIEnv *env, jclass cls); 522 523/* 524 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5) 525 */ 526 527JNIEXPORT jobject JNICALL 528JVM_GetClassConstantPool(JNIEnv *env, jclass cls); 529 530JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize 531(JNIEnv *env, jobject unused, jobject jcpool); 532 533JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt 534(JNIEnv *env, jobject unused, jobject jcpool, jint index); 535 536JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded 537(JNIEnv *env, jobject unused, jobject jcpool, jint index); 538 539JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt 540(JNIEnv *env, jobject unused, jobject jcpool, jint index); 541 542JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded 543(JNIEnv *env, jobject unused, jobject jcpool, jint index); 544 545JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt 546(JNIEnv *env, jobject unused, jobject jcpool, jint index); 547 548JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded 549(JNIEnv *env, jobject unused, jobject jcpool, jint index); 550 551JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt 552(JNIEnv *env, jobject unused, jobject jcpool, jint index); 553 554JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt 555(JNIEnv *env, jobject unused, jobject jcpool, jint index); 556 557JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt 558(JNIEnv *env, jobject unused, jobject jcpool, jint index); 559 560JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt 561(JNIEnv *env, jobject unused, jobject jcpool, jint index); 562 563JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt 564(JNIEnv *env, jobject unused, jobject jcpool, jint index); 565 566JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt 567(JNIEnv *env, jobject unused, jobject jcpool, jint index); 568 569JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At 570(JNIEnv *env, jobject unused, jobject jcpool, jint index); 571 572/* 573 * java.security.* 574 */ 575 576JNIEXPORT jobject JNICALL 577JVM_DoPrivileged(JNIEnv *env, jclass cls, 578 jobject action, jobject context, jboolean wrapException); 579 580JNIEXPORT jobject JNICALL 581JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls); 582 583JNIEXPORT jobject JNICALL 584JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls); 585 586/* 587 * Signal support, used to implement the shutdown sequence. Every VM must 588 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts 589 * (^C) and the latter for external termination (kill, system shutdown, etc.). 590 * Other platform-dependent signal values may also be supported. 591 */ 592 593JNIEXPORT void * JNICALL 594JVM_RegisterSignal(jint sig, void *handler); 595 596JNIEXPORT jboolean JNICALL 597JVM_RaiseSignal(jint sig); 598 599JNIEXPORT jint JNICALL 600JVM_FindSignal(const char *name); 601 602/* 603 * Retrieve the assertion directives for the specified class. 604 */ 605JNIEXPORT jboolean JNICALL 606JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls); 607 608/* 609 * Retrieve the assertion directives from the VM. 610 */ 611JNIEXPORT jobject JNICALL 612JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused); 613 614/* 615 * sun.misc.AtomicLong 616 */ 617JNIEXPORT jboolean JNICALL 618JVM_SupportsCX8(void); 619 620JNIEXPORT jboolean JNICALL 621JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal); 622 623/* 624 * com.sun.dtrace.jsdt support 625 */ 626 627#define JVM_TRACING_DTRACE_VERSION 1 628 629/* 630 * Structure to pass one probe description to JVM. 631 * 632 * The VM will overwrite the definition of the referenced method with 633 * code that will fire the probe. 634 */ 635typedef struct { 636 jmethodID method; 637 jstring function; 638 jstring name; 639 void* reserved[4]; // for future use 640} JVM_DTraceProbe; 641 642/** 643 * Encapsulates the stability ratings for a DTrace provider field 644 */ 645typedef struct { 646 jint nameStability; 647 jint dataStability; 648 jint dependencyClass; 649} JVM_DTraceInterfaceAttributes; 650 651/* 652 * Structure to pass one provider description to JVM 653 */ 654typedef struct { 655 jstring name; 656 JVM_DTraceProbe* probes; 657 jint probe_count; 658 JVM_DTraceInterfaceAttributes providerAttributes; 659 JVM_DTraceInterfaceAttributes moduleAttributes; 660 JVM_DTraceInterfaceAttributes functionAttributes; 661 JVM_DTraceInterfaceAttributes nameAttributes; 662 JVM_DTraceInterfaceAttributes argsAttributes; 663 void* reserved[4]; // for future use 664} JVM_DTraceProvider; 665 666/* 667 * Get the version number the JVM was built with 668 */ 669JNIEXPORT jint JNICALL 670JVM_DTraceGetVersion(JNIEnv* env); 671 672/* 673 * Register new probe with given signature, return global handle 674 * 675 * The version passed in is the version that the library code was 676 * built with. 677 */ 678JNIEXPORT jlong JNICALL 679JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name, 680 jint providers_count, JVM_DTraceProvider* providers); 681 682/* 683 * Check JSDT probe 684 */ 685JNIEXPORT jboolean JNICALL 686JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method); 687 688/* 689 * Destroy custom DOF 690 */ 691JNIEXPORT void JNICALL 692JVM_DTraceDispose(JNIEnv* env, jlong handle); 693 694/* 695 * Check to see if DTrace is supported by OS 696 */ 697JNIEXPORT jboolean JNICALL 698JVM_DTraceIsSupported(JNIEnv* env); 699 700/************************************************************************* 701 PART 2: Support for the Verifier and Class File Format Checker 702 ************************************************************************/ 703/* 704 * Return the class name in UTF format. The result is valid 705 * until JVM_ReleaseUTf is called. 706 * 707 * The caller must treat the string as a constant and not modify it 708 * in any way. 709 */ 710JNIEXPORT const char * JNICALL 711JVM_GetClassNameUTF(JNIEnv *env, jclass cb); 712 713/* 714 * Returns the constant pool types in the buffer provided by "types." 715 */ 716JNIEXPORT void JNICALL 717JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types); 718 719/* 720 * Returns the number of Constant Pool entries. 721 */ 722JNIEXPORT jint JNICALL 723JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb); 724 725/* 726 * Returns the number of *declared* fields or methods. 727 */ 728JNIEXPORT jint JNICALL 729JVM_GetClassFieldsCount(JNIEnv *env, jclass cb); 730 731JNIEXPORT jint JNICALL 732JVM_GetClassMethodsCount(JNIEnv *env, jclass cb); 733 734/* 735 * Returns the CP indexes of exceptions raised by a given method. 736 * Places the result in the given buffer. 737 * 738 * The method is identified by method_index. 739 */ 740JNIEXPORT void JNICALL 741JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index, 742 unsigned short *exceptions); 743/* 744 * Returns the number of exceptions raised by a given method. 745 * The method is identified by method_index. 746 */ 747JNIEXPORT jint JNICALL 748JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index); 749 750/* 751 * Returns the byte code sequence of a given method. 752 * Places the result in the given buffer. 753 * 754 * The method is identified by method_index. 755 */ 756JNIEXPORT void JNICALL 757JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index, 758 unsigned char *code); 759 760/* 761 * Returns the length of the byte code sequence of a given method. 762 * The method is identified by method_index. 763 */ 764JNIEXPORT jint JNICALL 765JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index); 766 767/* 768 * A structure used to a capture exception table entry in a Java method. 769 */ 770typedef struct { 771 jint start_pc; 772 jint end_pc; 773 jint handler_pc; 774 jint catchType; 775} JVM_ExceptionTableEntryType; 776 777/* 778 * Returns the exception table entry at entry_index of a given method. 779 * Places the result in the given buffer. 780 * 781 * The method is identified by method_index. 782 */ 783JNIEXPORT void JNICALL 784JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index, 785 jint entry_index, 786 JVM_ExceptionTableEntryType *entry); 787 788/* 789 * Returns the length of the exception table of a given method. 790 * The method is identified by method_index. 791 */ 792JNIEXPORT jint JNICALL 793JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index); 794 795/* 796 * Returns the modifiers of a given field. 797 * The field is identified by field_index. 798 */ 799JNIEXPORT jint JNICALL 800JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index); 801 802/* 803 * Returns the modifiers of a given method. 804 * The method is identified by method_index. 805 */ 806JNIEXPORT jint JNICALL 807JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index); 808 809/* 810 * Returns the number of local variables of a given method. 811 * The method is identified by method_index. 812 */ 813JNIEXPORT jint JNICALL 814JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index); 815 816/* 817 * Returns the number of arguments (including this pointer) of a given method. 818 * The method is identified by method_index. 819 */ 820JNIEXPORT jint JNICALL 821JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index); 822 823/* 824 * Returns the maximum amount of stack (in words) used by a given method. 825 * The method is identified by method_index. 826 */ 827JNIEXPORT jint JNICALL 828JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index); 829 830/* 831 * Is a given method a constructor. 832 * The method is identified by method_index. 833 */ 834JNIEXPORT jboolean JNICALL 835JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index); 836 837/* 838 * Returns the name of a given method in UTF format. 839 * The result remains valid until JVM_ReleaseUTF is called. 840 * 841 * The caller must treat the string as a constant and not modify it 842 * in any way. 843 */ 844JNIEXPORT const char * JNICALL 845JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index); 846 847/* 848 * Returns the signature of a given method in UTF format. 849 * The result remains valid until JVM_ReleaseUTF is called. 850 * 851 * The caller must treat the string as a constant and not modify it 852 * in any way. 853 */ 854JNIEXPORT const char * JNICALL 855JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index); 856 857/* 858 * Returns the name of the field refered to at a given constant pool 859 * index. 860 * 861 * The result is in UTF format and remains valid until JVM_ReleaseUTF 862 * is called. 863 * 864 * The caller must treat the string as a constant and not modify it 865 * in any way. 866 */ 867JNIEXPORT const char * JNICALL 868JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index); 869 870/* 871 * Returns the name of the method refered to at a given constant pool 872 * index. 873 * 874 * The result is in UTF format and remains valid until JVM_ReleaseUTF 875 * is called. 876 * 877 * The caller must treat the string as a constant and not modify it 878 * in any way. 879 */ 880JNIEXPORT const char * JNICALL 881JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index); 882 883/* 884 * Returns the signature of the method refered to at a given constant pool 885 * index. 886 * 887 * The result is in UTF format and remains valid until JVM_ReleaseUTF 888 * is called. 889 * 890 * The caller must treat the string as a constant and not modify it 891 * in any way. 892 */ 893JNIEXPORT const char * JNICALL 894JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index); 895 896/* 897 * Returns the signature of the field refered to at a given constant pool 898 * index. 899 * 900 * The result is in UTF format and remains valid until JVM_ReleaseUTF 901 * is called. 902 * 903 * The caller must treat the string as a constant and not modify it 904 * in any way. 905 */ 906JNIEXPORT const char * JNICALL 907JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index); 908 909/* 910 * Returns the class name refered to at a given constant pool index. 911 * 912 * The result is in UTF format and remains valid until JVM_ReleaseUTF 913 * is called. 914 * 915 * The caller must treat the string as a constant and not modify it 916 * in any way. 917 */ 918JNIEXPORT const char * JNICALL 919JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index); 920 921/* 922 * Returns the class name refered to at a given constant pool index. 923 * 924 * The constant pool entry must refer to a CONSTANT_Fieldref. 925 * 926 * The result is in UTF format and remains valid until JVM_ReleaseUTF 927 * is called. 928 * 929 * The caller must treat the string as a constant and not modify it 930 * in any way. 931 */ 932JNIEXPORT const char * JNICALL 933JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index); 934 935/* 936 * Returns the class name refered to at a given constant pool index. 937 * 938 * The constant pool entry must refer to CONSTANT_Methodref or 939 * CONSTANT_InterfaceMethodref. 940 * 941 * The result is in UTF format and remains valid until JVM_ReleaseUTF 942 * is called. 943 * 944 * The caller must treat the string as a constant and not modify it 945 * in any way. 946 */ 947JNIEXPORT const char * JNICALL 948JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index); 949 950/* 951 * Returns the modifiers of a field in calledClass. The field is 952 * referred to in class cb at constant pool entry index. 953 * 954 * The caller must treat the string as a constant and not modify it 955 * in any way. 956 * 957 * Returns -1 if the field does not exist in calledClass. 958 */ 959JNIEXPORT jint JNICALL 960JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 961 962/* 963 * Returns the modifiers of a method in calledClass. The method is 964 * referred to in class cb at constant pool entry index. 965 * 966 * Returns -1 if the method does not exist in calledClass. 967 */ 968JNIEXPORT jint JNICALL 969JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass); 970 971/* 972 * Releases the UTF string obtained from the VM. 973 */ 974JNIEXPORT void JNICALL 975JVM_ReleaseUTF(const char *utf); 976 977/* 978 * Compare if two classes are in the same package. 979 */ 980JNIEXPORT jboolean JNICALL 981JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2); 982 983/* Constants in class files */ 984 985#define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */ 986#define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */ 987#define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */ 988#define JVM_ACC_STATIC 0x0008 /* instance variable is static */ 989#define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */ 990#define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */ 991#define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */ 992#define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */ 993#define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */ 994#define JVM_ACC_TRANSIENT 0x0080 /* not persistent */ 995#define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */ 996#define JVM_ACC_NATIVE 0x0100 /* implemented in C */ 997#define JVM_ACC_INTERFACE 0x0200 /* class is an interface */ 998#define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */ 999#define JVM_ACC_STRICT 0x0800 /* strict floating point */ 1000#define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */ 1001#define JVM_ACC_ANNOTATION 0x2000 /* annotation type */ 1002#define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */ 1003 1004#define JVM_ACC_PUBLIC_BIT 0 1005#define JVM_ACC_PRIVATE_BIT 1 1006#define JVM_ACC_PROTECTED_BIT 2 1007#define JVM_ACC_STATIC_BIT 3 1008#define JVM_ACC_FINAL_BIT 4 1009#define JVM_ACC_SYNCHRONIZED_BIT 5 1010#define JVM_ACC_SUPER_BIT 5 1011#define JVM_ACC_VOLATILE_BIT 6 1012#define JVM_ACC_BRIDGE_BIT 6 1013#define JVM_ACC_TRANSIENT_BIT 7 1014#define JVM_ACC_VARARGS_BIT 7 1015#define JVM_ACC_NATIVE_BIT 8 1016#define JVM_ACC_INTERFACE_BIT 9 1017#define JVM_ACC_ABSTRACT_BIT 10 1018#define JVM_ACC_STRICT_BIT 11 1019#define JVM_ACC_SYNTHETIC_BIT 12 1020#define JVM_ACC_ANNOTATION_BIT 13 1021#define JVM_ACC_ENUM_BIT 14 1022 1023// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java 1024enum { 1025 JVM_CONSTANT_Utf8 = 1, 1026 JVM_CONSTANT_Unicode, /* unused */ 1027 JVM_CONSTANT_Integer, 1028 JVM_CONSTANT_Float, 1029 JVM_CONSTANT_Long, 1030 JVM_CONSTANT_Double, 1031 JVM_CONSTANT_Class, 1032 JVM_CONSTANT_String, 1033 JVM_CONSTANT_Fieldref, 1034 JVM_CONSTANT_Methodref, 1035 JVM_CONSTANT_InterfaceMethodref, 1036 JVM_CONSTANT_NameAndType 1037}; 1038 1039/* Used in the newarray instruction. */ 1040 1041#define JVM_T_BOOLEAN 4 1042#define JVM_T_CHAR 5 1043#define JVM_T_FLOAT 6 1044#define JVM_T_DOUBLE 7 1045#define JVM_T_BYTE 8 1046#define JVM_T_SHORT 9 1047#define JVM_T_INT 10 1048#define JVM_T_LONG 11 1049 1050/* JVM method signatures */ 1051 1052#define JVM_SIGNATURE_ARRAY '[' 1053#define JVM_SIGNATURE_BYTE 'B' 1054#define JVM_SIGNATURE_CHAR 'C' 1055#define JVM_SIGNATURE_CLASS 'L' 1056#define JVM_SIGNATURE_ENDCLASS ';' 1057#define JVM_SIGNATURE_ENUM 'E' 1058#define JVM_SIGNATURE_FLOAT 'F' 1059#define JVM_SIGNATURE_DOUBLE 'D' 1060#define JVM_SIGNATURE_FUNC '(' 1061#define JVM_SIGNATURE_ENDFUNC ')' 1062#define JVM_SIGNATURE_INT 'I' 1063#define JVM_SIGNATURE_LONG 'J' 1064#define JVM_SIGNATURE_SHORT 'S' 1065#define JVM_SIGNATURE_VOID 'V' 1066#define JVM_SIGNATURE_BOOLEAN 'Z' 1067 1068/* 1069 * A function defined by the byte-code verifier and called by the VM. 1070 * This is not a function implemented in the VM. 1071 * 1072 * Returns JNI_FALSE if verification fails. A detailed error message 1073 * will be places in msg_buf, whose length is specified by buf_len. 1074 */ 1075typedef jboolean (*verifier_fn_t)(JNIEnv *env, 1076 jclass cb, 1077 char * msg_buf, 1078 jint buf_len); 1079 1080 1081/* 1082 * Support for a VM-independent class format checker. 1083 */ 1084typedef struct { 1085 unsigned long code; /* byte code */ 1086 unsigned long excs; /* exceptions */ 1087 unsigned long etab; /* catch table */ 1088 unsigned long lnum; /* line number */ 1089 unsigned long lvar; /* local vars */ 1090} method_size_info; 1091 1092typedef struct { 1093 unsigned int constants; /* constant pool */ 1094 unsigned int fields; 1095 unsigned int methods; 1096 unsigned int interfaces; 1097 unsigned int fields2; /* number of static 2-word fields */ 1098 unsigned int innerclasses; /* # of records in InnerClasses attr */ 1099 1100 method_size_info clinit; /* memory used in clinit */ 1101 method_size_info main; /* used everywhere else */ 1102} class_size_info; 1103 1104/* 1105 * Functions defined in libjava.so to perform string conversions. 1106 * 1107 */ 1108 1109typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str); 1110 1111typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b); 1112 1113/* This is the function defined in libjava.so that performs class 1114 * format checks. This functions fills in size information about 1115 * the class file and returns: 1116 * 1117 * 0: good 1118 * -1: out of memory 1119 * -2: bad format 1120 * -3: unsupported version 1121 * -4: bad class name 1122 */ 1123 1124typedef jint (*check_format_fn_t)(char *class_name, 1125 unsigned char *data, 1126 unsigned int data_size, 1127 class_size_info *class_size, 1128 char *message_buffer, 1129 jint buffer_length, 1130 jboolean measure_only, 1131 jboolean check_relaxed); 1132 1133#define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \ 1134 JVM_ACC_FINAL | \ 1135 JVM_ACC_SUPER | \ 1136 JVM_ACC_INTERFACE | \ 1137 JVM_ACC_ABSTRACT | \ 1138 JVM_ACC_ANNOTATION | \ 1139 JVM_ACC_ENUM | \ 1140 JVM_ACC_SYNTHETIC) 1141 1142#define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \ 1143 JVM_ACC_PRIVATE | \ 1144 JVM_ACC_PROTECTED | \ 1145 JVM_ACC_STATIC | \ 1146 JVM_ACC_FINAL | \ 1147 JVM_ACC_VOLATILE | \ 1148 JVM_ACC_TRANSIENT | \ 1149 JVM_ACC_ENUM | \ 1150 JVM_ACC_SYNTHETIC) 1151 1152#define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \ 1153 JVM_ACC_PRIVATE | \ 1154 JVM_ACC_PROTECTED | \ 1155 JVM_ACC_STATIC | \ 1156 JVM_ACC_FINAL | \ 1157 JVM_ACC_SYNCHRONIZED | \ 1158 JVM_ACC_BRIDGE | \ 1159 JVM_ACC_VARARGS | \ 1160 JVM_ACC_NATIVE | \ 1161 JVM_ACC_ABSTRACT | \ 1162 JVM_ACC_STRICT | \ 1163 JVM_ACC_SYNTHETIC) 1164 1165/* 1166 * This is the function defined in libjava.so to perform path 1167 * canonicalization. VM call this function before opening jar files 1168 * to load system classes. 1169 * 1170 */ 1171 1172typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len); 1173 1174/************************************************************************* 1175 PART 3: I/O and Network Support 1176 ************************************************************************/ 1177 1178/* Note that the JVM IO functions are expected to return JVM_IO_ERR 1179 * when there is any kind of error. The caller can then use the 1180 * platform specific support (e.g., errno) to get the detailed 1181 * error info. The JVM_GetLastErrorString procedure may also be used 1182 * to obtain a descriptive error string. 1183 */ 1184#define JVM_IO_ERR (-1) 1185 1186/* For interruptible IO. Returning JVM_IO_INTR indicates that an IO 1187 * operation has been disrupted by Thread.interrupt. There are a 1188 * number of technical difficulties related to interruptible IO that 1189 * need to be solved. For example, most existing programs do not handle 1190 * InterruptedIOExceptions specially, they simply treat those as any 1191 * IOExceptions, which typically indicate fatal errors. 1192 * 1193 * There are also two modes of operation for interruptible IO. In the 1194 * resumption mode, an interrupted IO operation is guaranteed not to 1195 * have any side-effects, and can be restarted. In the termination mode, 1196 * an interrupted IO operation corrupts the underlying IO stream, so 1197 * that the only reasonable operation on an interrupted stream is to 1198 * close that stream. The resumption mode seems to be impossible to 1199 * implement on Win32 and Solaris. Implementing the termination mode is 1200 * easier, but it's not clear that's the right semantics. 1201 * 1202 * Interruptible IO is not supported on Win32.It can be enabled/disabled 1203 * using a compile-time flag on Solaris. Third-party JVM ports do not 1204 * need to implement interruptible IO. 1205 */ 1206#define JVM_IO_INTR (-2) 1207 1208/* Write a string into the given buffer, in the platform's local encoding, 1209 * that describes the most recent system-level error to occur in this thread. 1210 * Return the length of the string or zero if no error occurred. 1211 */ 1212JNIEXPORT jint JNICALL 1213JVM_GetLastErrorString(char *buf, int len); 1214 1215/* 1216 * Convert a pathname into native format. This function does syntactic 1217 * cleanup, such as removing redundant separator characters. It modifies 1218 * the given pathname string in place. 1219 */ 1220JNIEXPORT char * JNICALL 1221JVM_NativePath(char *); 1222 1223/* 1224 * JVM I/O error codes 1225 */ 1226#define JVM_EEXIST -100 1227 1228/* 1229 * Open a file descriptor. This function returns a negative error code 1230 * on error, and a non-negative integer that is the file descriptor on 1231 * success. 1232 */ 1233JNIEXPORT jint JNICALL 1234JVM_Open(const char *fname, jint flags, jint mode); 1235 1236/* 1237 * Close a file descriptor. This function returns -1 on error, and 0 1238 * on success. 1239 * 1240 * fd the file descriptor to close. 1241 */ 1242JNIEXPORT jint JNICALL 1243JVM_Close(jint fd); 1244 1245/* 1246 * Read data from a file decriptor into a char array. 1247 * 1248 * fd the file descriptor to read from. 1249 * buf the buffer where to put the read data. 1250 * nbytes the number of bytes to read. 1251 * 1252 * This function returns -1 on error, and 0 on success. 1253 */ 1254JNIEXPORT jint JNICALL 1255JVM_Read(jint fd, char *buf, jint nbytes); 1256 1257/* 1258 * Write data from a char array to a file decriptor. 1259 * 1260 * fd the file descriptor to read from. 1261 * buf the buffer from which to fetch the data. 1262 * nbytes the number of bytes to write. 1263 * 1264 * This function returns -1 on error, and 0 on success. 1265 */ 1266JNIEXPORT jint JNICALL 1267JVM_Write(jint fd, char *buf, jint nbytes); 1268 1269/* 1270 * Returns the number of bytes available for reading from a given file 1271 * descriptor 1272 */ 1273JNIEXPORT jint JNICALL 1274JVM_Available(jint fd, jlong *pbytes); 1275 1276/* 1277 * Move the file descriptor pointer from whence by offset. 1278 * 1279 * fd the file descriptor to move. 1280 * offset the number of bytes to move it by. 1281 * whence the start from where to move it. 1282 * 1283 * This function returns the resulting pointer location. 1284 */ 1285JNIEXPORT jlong JNICALL 1286JVM_Lseek(jint fd, jlong offset, jint whence); 1287 1288/* 1289 * Set the length of the file associated with the given descriptor to the given 1290 * length. If the new length is longer than the current length then the file 1291 * is extended; the contents of the extended portion are not defined. The 1292 * value of the file pointer is undefined after this procedure returns. 1293 */ 1294JNIEXPORT jint JNICALL 1295JVM_SetLength(jint fd, jlong length); 1296 1297/* 1298 * Synchronize the file descriptor's in memory state with that of the 1299 * physical device. Return of -1 is an error, 0 is OK. 1300 */ 1301JNIEXPORT jint JNICALL 1302JVM_Sync(jint fd); 1303 1304/* 1305 * Networking library support 1306 */ 1307 1308JNIEXPORT jint JNICALL 1309JVM_InitializeSocketLibrary(void); 1310 1311struct sockaddr; 1312 1313JNIEXPORT jint JNICALL 1314JVM_Socket(jint domain, jint type, jint protocol); 1315 1316JNIEXPORT jint JNICALL 1317JVM_SocketClose(jint fd); 1318 1319JNIEXPORT jint JNICALL 1320JVM_SocketShutdown(jint fd, jint howto); 1321 1322JNIEXPORT jint JNICALL 1323JVM_Recv(jint fd, char *buf, jint nBytes, jint flags); 1324 1325JNIEXPORT jint JNICALL 1326JVM_Send(jint fd, char *buf, jint nBytes, jint flags); 1327 1328JNIEXPORT jint JNICALL 1329JVM_Timeout(int fd, long timeout); 1330 1331JNIEXPORT jint JNICALL 1332JVM_Listen(jint fd, jint count); 1333 1334JNIEXPORT jint JNICALL 1335JVM_Connect(jint fd, struct sockaddr *him, jint len); 1336 1337JNIEXPORT jint JNICALL 1338JVM_Bind(jint fd, struct sockaddr *him, jint len); 1339 1340JNIEXPORT jint JNICALL 1341JVM_Accept(jint fd, struct sockaddr *him, jint *len); 1342 1343JNIEXPORT jint JNICALL 1344JVM_RecvFrom(jint fd, char *buf, int nBytes, 1345 int flags, struct sockaddr *from, int *fromlen); 1346 1347JNIEXPORT jint JNICALL 1348JVM_SendTo(jint fd, char *buf, int len, 1349 int flags, struct sockaddr *to, int tolen); 1350 1351JNIEXPORT jint JNICALL 1352JVM_SocketAvailable(jint fd, jint *result); 1353 1354 1355JNIEXPORT jint JNICALL 1356JVM_GetSockName(jint fd, struct sockaddr *him, int *len); 1357 1358JNIEXPORT jint JNICALL 1359JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen); 1360 1361JNIEXPORT jint JNICALL 1362JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen); 1363 1364/* 1365 * These routines are only reentrant on Windows 1366 */ 1367 1368#ifdef _WINDOWS 1369 1370JNIEXPORT struct protoent * JNICALL 1371JVM_GetProtoByName(char* name); 1372 1373JNIEXPORT struct hostent* JNICALL 1374JVM_GetHostByAddr(const char* name, int len, int type); 1375 1376JNIEXPORT struct hostent* JNICALL 1377JVM_GetHostByName(char* name); 1378 1379#endif /* _WINDOWS */ 1380 1381JNIEXPORT int JNICALL 1382JVM_GetHostName(char* name, int namelen); 1383 1384/* 1385 * The standard printing functions supported by the Java VM. (Should they 1386 * be renamed to JVM_* in the future? 1387 */ 1388 1389/* 1390 * BE CAREFUL! The following functions do not implement the 1391 * full feature set of standard C printf formats. 1392 */ 1393int 1394jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args); 1395 1396int 1397jio_snprintf(char *str, size_t count, const char *fmt, ...); 1398 1399int 1400jio_fprintf(FILE *, const char *fmt, ...); 1401 1402int 1403jio_vfprintf(FILE *, const char *fmt, va_list args); 1404 1405 1406JNIEXPORT void * JNICALL 1407JVM_RawMonitorCreate(void); 1408 1409JNIEXPORT void JNICALL 1410JVM_RawMonitorDestroy(void *mon); 1411 1412JNIEXPORT jint JNICALL 1413JVM_RawMonitorEnter(void *mon); 1414 1415JNIEXPORT void JNICALL 1416JVM_RawMonitorExit(void *mon); 1417 1418 1419#ifdef SUPPORT_OLD_REFLECTION 1420 1421/* 1422 * Support for old native code-based (pre-JDK 1.4) reflection implementation. 1423 * Disabled by default in the product build. 1424 * 1425 * See reflection.hpp for information on SUPPORT_OLD_REFLECTION 1426 */ 1427 1428/* 1429 * reflecting fields and methods. 1430 * which: 0 --- MEMBER_PUBLIC 1431 * 1 --- MEMBER_DECLARED 1432 * NOTE: absent in product build by default 1433 */ 1434 1435JNIEXPORT jobjectArray JNICALL 1436JVM_GetClassFields(JNIEnv *env, jclass cls, jint which); 1437 1438JNIEXPORT jobjectArray JNICALL 1439JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which); 1440 1441JNIEXPORT jobjectArray JNICALL 1442JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which); 1443 1444JNIEXPORT jobject JNICALL 1445JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which); 1446 1447JNIEXPORT jobject JNICALL 1448JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, 1449 jint which); 1450JNIEXPORT jobject JNICALL 1451JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, 1452 jint which); 1453 1454/* 1455 * Implements Class.newInstance 1456 */ 1457JNIEXPORT jobject JNICALL 1458JVM_NewInstance(JNIEnv *env, jclass cls); 1459 1460/* 1461 * java.lang.reflect.Field 1462 */ 1463JNIEXPORT jobject JNICALL 1464JVM_GetField(JNIEnv *env, jobject field, jobject obj); 1465 1466JNIEXPORT jvalue JNICALL 1467JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, 1468 unsigned char wCode); 1469 1470JNIEXPORT void JNICALL 1471JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val); 1472 1473JNIEXPORT void JNICALL 1474JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, 1475 unsigned char vCode); 1476 1477/* 1478 * java.lang.reflect.Method 1479 */ 1480JNIEXPORT jobject JNICALL 1481JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0); 1482 1483/* 1484 * java.lang.reflect.Constructor 1485 */ 1486JNIEXPORT jobject JNICALL 1487JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0); 1488 1489#endif /* SUPPORT_OLD_REFLECTION */ 1490 1491/* 1492 * java.lang.management support 1493 */ 1494JNIEXPORT void* JNICALL 1495JVM_GetManagement(jint version); 1496 1497/* 1498 * com.sun.tools.attach.VirtualMachine support 1499 * 1500 * Initialize the agent properties with the properties maintained in the VM. 1501 */ 1502JNIEXPORT jobject JNICALL 1503JVM_InitAgentProperties(JNIEnv *env, jobject agent_props); 1504 1505/* Generics reflection support. 1506 * 1507 * Returns information about the given class's EnclosingMethod 1508 * attribute, if present, or null if the class had no enclosing 1509 * method. 1510 * 1511 * If non-null, the returned array contains three elements. Element 0 1512 * is the java.lang.Class of which the enclosing method is a member, 1513 * and elements 1 and 2 are the java.lang.Strings for the enclosing 1514 * method's name and descriptor, respectively. 1515 */ 1516JNIEXPORT jobjectArray JNICALL 1517JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass); 1518 1519/* 1520 * Java thread state support 1521 */ 1522enum { 1523 JAVA_THREAD_STATE_NEW = 0, 1524 JAVA_THREAD_STATE_RUNNABLE = 1, 1525 JAVA_THREAD_STATE_BLOCKED = 2, 1526 JAVA_THREAD_STATE_WAITING = 3, 1527 JAVA_THREAD_STATE_TIMED_WAITING = 4, 1528 JAVA_THREAD_STATE_TERMINATED = 5, 1529 JAVA_THREAD_STATE_COUNT = 6 1530}; 1531 1532/* 1533 * Returns an array of the threadStatus values representing the 1534 * given Java thread state. Returns NULL if the VM version is 1535 * incompatible with the JDK or doesn't support the given 1536 * Java thread state. 1537 */ 1538JNIEXPORT jintArray JNICALL 1539JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState); 1540 1541/* 1542 * Returns an array of the substate names representing the 1543 * given Java thread state. Returns NULL if the VM version is 1544 * incompatible with the JDK or the VM doesn't support 1545 * the given Java thread state. 1546 * values must be the jintArray returned from JVM_GetThreadStateValues 1547 * and javaThreadState. 1548 */ 1549JNIEXPORT jobjectArray JNICALL 1550JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values); 1551 1552/* ========================================================================= 1553 * The following defines a private JVM interface that the JDK can query 1554 * for the JVM version and capabilities. sun.misc.Version defines 1555 * the methods for getting the VM version and its capabilities. 1556 * 1557 * When a new bit is added, the following should be updated to provide 1558 * access to the new capability: 1559 * HS: JVM_GetVersionInfo and Abstract_VM_Version class 1560 * SDK: Version class 1561 * 1562 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for 1563 * JVM to query for the JDK version and capabilities. 1564 * 1565 * When a new bit is added, the following should be updated to provide 1566 * access to the new capability: 1567 * HS: JDK_Version class 1568 * SDK: JDK_GetVersionInfo0 1569 * 1570 * ========================================================================== 1571 */ 1572typedef struct { 1573 /* HotSpot Express VM version string: 1574 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>] 1575 */ 1576 unsigned int jvm_version; /* Consists of major.minor.0.build */ 1577 unsigned int update_version : 8; /* 0 in HotSpot Express VM */ 1578 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */ 1579 unsigned int reserved1 : 16; 1580 unsigned int reserved2; 1581 1582 /* The following bits represents JVM supports that JDK has dependency on. 1583 * JDK can use these bits to determine which JVM version 1584 * and support it has to maintain runtime compatibility. 1585 * 1586 * When a new bit is added in a minor or update release, make sure 1587 * the new bit is also added in the main/baseline. 1588 */ 1589 unsigned int is_attachable : 1; 1590 unsigned int is_kernel_jvm : 1; 1591 unsigned int : 30; 1592 unsigned int : 32; 1593 unsigned int : 32; 1594} jvm_version_info; 1595 1596#define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1597#define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1598// Micro version is 0 in HotSpot Express VM (set in jvm.cpp). 1599#define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1600/* Build number is available in all HotSpot Express VM builds. 1601 * It is defined in make/hotspot_version file. 1602 */ 1603#define JVM_VERSION_BUILD(version) ((version & 0x000000FF)) 1604 1605JNIEXPORT void JNICALL 1606JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size); 1607 1608typedef struct { 1609 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx 1610 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */ 1611 /* and build number (xx) */ 1612 unsigned int update_version : 8; /* Update release version (uu) */ 1613 unsigned int special_update_version : 8; /* Special update release version (c)*/ 1614 unsigned int reserved1 : 16; 1615 unsigned int reserved2; 1616 1617 /* The following bits represents new JDK supports that VM has dependency on. 1618 * VM implementation can use these bits to determine which JDK version 1619 * and support it has to maintain runtime compatibility. 1620 * 1621 * When a new bit is added in a minor or update release, make sure 1622 * the new bit is also added in the main/baseline. 1623 */ 1624 unsigned int thread_park_blocker : 1; 1625 unsigned int : 31; 1626 unsigned int : 32; 1627 unsigned int : 32; 1628} jdk_version_info; 1629 1630#define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24) 1631#define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16) 1632#define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8) 1633 1634/* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN) 1635 * It will be zero for internal builds. 1636 */ 1637#define JDK_VERSION_BUILD(version) ((version & 0x000000FF)) 1638 1639/* 1640 * This is the function JDK_GetVersionInfo0 defined in libjava.so 1641 * that is dynamically looked up by JVM. 1642 */ 1643typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size); 1644 1645/* 1646 * This structure is used by the launcher to get the default thread 1647 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a 1648 * version of 1.1. As it is not supported otherwise, it has been removed 1649 * from jni.h 1650 */ 1651typedef struct JDK1_1InitArgs { 1652 jint version; 1653 1654 char **properties; 1655 jint checkSource; 1656 jint nativeStackSize; 1657 jint javaStackSize; 1658 jint minHeapSize; 1659 jint maxHeapSize; 1660 jint verifyMode; 1661 char *classpath; 1662 1663 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args); 1664 void (JNICALL *exit)(jint code); 1665 void (JNICALL *abort)(void); 1666 1667 jint enableClassGC; 1668 jint enableVerboseGC; 1669 jint disableAsyncGC; 1670 jint verbose; 1671 jboolean debugging; 1672 jint debugPort; 1673} JDK1_1InitArgs; 1674 1675#ifdef __cplusplus 1676} /* extern "C" */ 1677#endif /* __cplusplus */ 1678 1679#endif /* !_JAVASOFT_JVM_H_ */ 1680