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
40 extern "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
74 JNIEXPORT jint JNICALL
75 JVM_GetInterfaceVersion(void);
76
77 /*************************************************************************
78 PART 1: Functions for Native Libraries
79 ************************************************************************/
80 /*
81 * java.lang.Object
82 */
83 JNIEXPORT jint JNICALL
84 JVM_IHashCode(JNIEnv *env, jobject obj);
85
86 JNIEXPORT void JNICALL
87 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
88
89 JNIEXPORT void JNICALL
90 JVM_MonitorNotify(JNIEnv *env, jobject obj);
91
92 JNIEXPORT void JNICALL
93 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
94
95 JNIEXPORT jobject JNICALL
96 JVM_Clone(JNIEnv *env, jobject obj);
97
98 /*
99 * java.lang.String
100 */
101 JNIEXPORT jstring JNICALL
102 JVM_InternString(JNIEnv *env, jstring str);
103
104 /*
105 * java.lang.System
106 */
107 JNIEXPORT jlong JNICALL
108 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
109
110 JNIEXPORT jlong JNICALL
111 JVM_NanoTime(JNIEnv *env, jclass ignored);
112
113 JNIEXPORT void JNICALL
114 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
115 jobject dst, jint dst_pos, jint length);
116
117 JNIEXPORT jobject JNICALL
118 JVM_InitProperties(JNIEnv *env, jobject p);
119
120 /*
121 * java.io.File
122 */
123 JNIEXPORT void JNICALL
124 JVM_OnExit(void (*func)(void));
125
126 /*
127 * java.lang.Runtime
128 */
129 JNIEXPORT void JNICALL
130 JVM_Exit(jint code);
131
132 JNIEXPORT void JNICALL
133 JVM_Halt(jint code);
134
135 JNIEXPORT void JNICALL
136 JVM_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 */
152 JNIEXPORT jlong JNICALL
153 JVM_MaxObjectInspectionAge(void);
154
155 JNIEXPORT void JNICALL
156 JVM_TraceInstructions(jboolean on);
157
158 JNIEXPORT void JNICALL
159 JVM_TraceMethodCalls(jboolean on);
160
161 JNIEXPORT jlong JNICALL
162 JVM_TotalMemory(void);
163
164 JNIEXPORT jlong JNICALL
165 JVM_FreeMemory(void);
166
167 JNIEXPORT jlong JNICALL
168 JVM_MaxMemory(void);
169
170 JNIEXPORT jint JNICALL
171 JVM_ActiveProcessorCount(void);
172
173 JNIEXPORT void * JNICALL
174 JVM_LoadLibrary(const char *name);
175
176 JNIEXPORT void JNICALL
177 JVM_UnloadLibrary(void * handle);
178
179 JNIEXPORT void * JNICALL
180 JVM_FindLibraryEntry(void *handle, const char *name);
181
182 JNIEXPORT jboolean JNICALL
183 JVM_IsSupportedJNIVersion(jint version);
184
185 /*
186 * java.lang.Float and java.lang.Double
187 */
188 JNIEXPORT jboolean JNICALL
189 JVM_IsNaN(jdouble d);
190
191 /*
192 * java.lang.Throwable
193 */
194 JNIEXPORT void JNICALL
195 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
196
197 JNIEXPORT void JNICALL
198 JVM_PrintStackTrace(JNIEnv *env, jobject throwable, jobject printable);
199
200 JNIEXPORT jint JNICALL
201 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
202
203 JNIEXPORT jobject JNICALL
204 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
205
206 /*
207 * java.lang.Compiler
208 */
209 JNIEXPORT void JNICALL
210 JVM_InitializeCompiler (JNIEnv *env, jclass compCls);
211
212 JNIEXPORT jboolean JNICALL
213 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls);
214
215 JNIEXPORT jboolean JNICALL
216 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls);
217
218 JNIEXPORT jboolean JNICALL
219 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname);
220
221 JNIEXPORT jobject JNICALL
222 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg);
223
224 JNIEXPORT void JNICALL
225 JVM_EnableCompiler(JNIEnv *env, jclass compCls);
226
227 JNIEXPORT void JNICALL
228 JVM_DisableCompiler(JNIEnv *env, jclass compCls);
229
230 /*
231 * java.lang.Thread
232 */
233 JNIEXPORT void JNICALL
234 JVM_StartThread(JNIEnv *env, jobject thread);
235
236 JNIEXPORT void JNICALL
237 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
238
239 JNIEXPORT jboolean JNICALL
240 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
241
242 JNIEXPORT void JNICALL
243 JVM_SuspendThread(JNIEnv *env, jobject thread);
244
245 JNIEXPORT void JNICALL
246 JVM_ResumeThread(JNIEnv *env, jobject thread);
247
248 JNIEXPORT void JNICALL
249 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
250
251 JNIEXPORT void JNICALL
252 JVM_Yield(JNIEnv *env, jclass threadClass);
253
254 JNIEXPORT void JNICALL
255 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
256
257 JNIEXPORT jobject JNICALL
258 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
259
260 JNIEXPORT jint JNICALL
261 JVM_CountStackFrames(JNIEnv *env, jobject thread);
262
263 JNIEXPORT void JNICALL
264 JVM_Interrupt(JNIEnv *env, jobject thread);
265
266 JNIEXPORT jboolean JNICALL
267 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
268
269 JNIEXPORT jboolean JNICALL
270 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
271
272 JNIEXPORT void JNICALL
273 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
274
275 JNIEXPORT jobjectArray JNICALL
276 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
277
278 /* getStackTrace() and getAllStackTraces() method */
279 JNIEXPORT jobjectArray JNICALL
280 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
281
282 /*
283 * java.lang.SecurityManager
284 */
285 JNIEXPORT jclass JNICALL
286 JVM_CurrentLoadedClass(JNIEnv *env);
287
288 JNIEXPORT jobject JNICALL
289 JVM_CurrentClassLoader(JNIEnv *env);
290
291 JNIEXPORT jobjectArray JNICALL
292 JVM_GetClassContext(JNIEnv *env);
293
294 JNIEXPORT jint JNICALL
295 JVM_ClassDepth(JNIEnv *env, jstring name);
296
297 JNIEXPORT jint JNICALL
298 JVM_ClassLoaderDepth(JNIEnv *env);
299
300 /*
301 * java.lang.Package
302 */
303 JNIEXPORT jstring JNICALL
304 JVM_GetSystemPackage(JNIEnv *env, jstring name);
305
306 JNIEXPORT jobjectArray JNICALL
307 JVM_GetSystemPackages(JNIEnv *env);
308
309 /*
310 * java.io.ObjectInputStream
311 */
312 JNIEXPORT jobject JNICALL
313 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass,
314 jclass initClass);
315
316 JNIEXPORT jobject JNICALL
317 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass,
318 jint length);
319
320 JNIEXPORT jobject JNICALL
321 JVM_LatestUserDefinedLoader(JNIEnv *env);
322
323 /*
324 * This function has been deprecated and should not be considered
325 * part of the specified JVM interface.
326 */
327 JNIEXPORT jclass JNICALL
328 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass,
329 jstring currClassName);
330
331 /*
332 * java.lang.reflect.Array
333 */
334 JNIEXPORT jint JNICALL
335 JVM_GetArrayLength(JNIEnv *env, jobject arr);
336
337 JNIEXPORT jobject JNICALL
338 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
339
340 JNIEXPORT jvalue JNICALL
341 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
342
343 JNIEXPORT void JNICALL
344 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
345
346 JNIEXPORT void JNICALL
347 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
348 unsigned char vCode);
349
350 JNIEXPORT jobject JNICALL
351 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
352
353 JNIEXPORT jobject JNICALL
354 JVM_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 */
367 JNIEXPORT jclass JNICALL
368 JVM_GetCallerClass(JNIEnv *env, int n);
369
370 /*
371 * Find primitive classes
372 * utf: class name
373 */
374 JNIEXPORT jclass JNICALL
375 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
376
377 /*
378 * Link the class
379 */
380 JNIEXPORT void JNICALL
381 JVM_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 */
388 JNIEXPORT jclass JNICALL
389 JVM_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 */
395 JNIEXPORT jclass JNICALL
396 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
397
398 /*
399 * Find a class from a given class.
400 */
401 JNIEXPORT jclass JNICALL
402 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
403 jclass from);
404
405 /* Find a loaded class cached by the VM */
406 JNIEXPORT jclass JNICALL
407 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
408
409 /* Define a class */
410 JNIEXPORT jclass JNICALL
411 JVM_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) */
415 JNIEXPORT jclass JNICALL
416 JVM_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 */
425 JNIEXPORT jclass JNICALL
426 JVM_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) */
432 JNIEXPORT jclass JNICALL
433 JVM_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
443 JNIEXPORT jstring JNICALL
444 JVM_GetClassName(JNIEnv *env, jclass cls);
445
446 JNIEXPORT jobjectArray JNICALL
447 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
448
449 JNIEXPORT jobject JNICALL
450 JVM_GetClassLoader(JNIEnv *env, jclass cls);
451
452 JNIEXPORT jboolean JNICALL
453 JVM_IsInterface(JNIEnv *env, jclass cls);
454
455 JNIEXPORT jobjectArray JNICALL
456 JVM_GetClassSigners(JNIEnv *env, jclass cls);
457
458 JNIEXPORT void JNICALL
459 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
460
461 JNIEXPORT jobject JNICALL
462 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
463
464 JNIEXPORT void JNICALL
465 JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain);
466
467 JNIEXPORT jboolean JNICALL
468 JVM_IsArrayClass(JNIEnv *env, jclass cls);
469
470 JNIEXPORT jboolean JNICALL
471 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
472
473 JNIEXPORT jclass JNICALL
474 JVM_GetComponentType(JNIEnv *env, jclass cls);
475
476 JNIEXPORT jint JNICALL
477 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
478
479 JNIEXPORT jobjectArray JNICALL
480 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
481
482 JNIEXPORT jclass JNICALL
483 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
484
485 /* Generics support (JDK 1.5) */
486 JNIEXPORT jstring JNICALL
487 JVM_GetClassSignature(JNIEnv *env, jclass cls);
488
489 /* Annotations support (JDK 1.5) */
490 JNIEXPORT jbyteArray JNICALL
491 JVM_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
496 JNIEXPORT jbyteArray JNICALL
497 JVM_GetFieldAnnotations(JNIEnv *env, jobject field);
498
499 // method is a handle to a java.lang.reflect.Method object
500 JNIEXPORT jbyteArray JNICALL
501 JVM_GetMethodAnnotations(JNIEnv *env, jobject method);
502
503 // method is a handle to a java.lang.reflect.Method object
504 JNIEXPORT jbyteArray JNICALL
505 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method);
506
507 // method is a handle to a java.lang.reflect.Method object
508 JNIEXPORT jbyteArray JNICALL
509 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method);
510
511
512 /*
513 * New (JDK 1.4) reflection implementation
514 */
515
516 JNIEXPORT jobjectArray JNICALL
517 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
518
519 JNIEXPORT jobjectArray JNICALL
520 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
521
522 JNIEXPORT jobjectArray JNICALL
523 JVM_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. */
531 JNIEXPORT jint JNICALL
532 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
533
534 /*
535 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
536 */
537
538 JNIEXPORT jobject JNICALL
539 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
540
541 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
542 (JNIEnv *env, jobject unused, jobject jcpool);
543
544 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
545 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
546
547 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
548 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
549
550 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
551 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
552
553 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
554 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
555
556 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
557 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
558
559 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
560 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
561
562 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
563 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
564
565 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
566 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
567
568 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
569 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
570
571 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
572 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
573
574 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
575 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
576
577 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
578 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
579
580 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
581 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
582
583 /*
584 * java.security.*
585 */
586
587 JNIEXPORT jobject JNICALL
588 JVM_DoPrivileged(JNIEnv *env, jclass cls,
589 jobject action, jobject context, jboolean wrapException);
590
591 JNIEXPORT jobject JNICALL
592 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
593
594 JNIEXPORT jobject JNICALL
595 JVM_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
604 JNIEXPORT void * JNICALL
605 JVM_RegisterSignal(jint sig, void *handler);
606
607 JNIEXPORT jboolean JNICALL
608 JVM_RaiseSignal(jint sig);
609
610 JNIEXPORT jint JNICALL
611 JVM_FindSignal(const char *name);
612
613 /*
614 * Retrieve the assertion directives for the specified class.
615 */
616 JNIEXPORT jboolean JNICALL
617 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
618
619 /*
620 * Retrieve the assertion directives from the VM.
621 */
622 JNIEXPORT jobject JNICALL
623 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
624
625 /*
626 * sun.misc.AtomicLong
627 */
628 JNIEXPORT jboolean JNICALL
629 JVM_SupportsCX8(void);
630
631 JNIEXPORT jboolean JNICALL
632 JVM_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 */
646 typedef 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 */
656 typedef 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 */
665 typedef 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 */
680 JNIEXPORT jint JNICALL
681 JVM_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 */
689 JNIEXPORT jlong JNICALL
690 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
691 jint providers_count, JVM_DTraceProvider* providers);
692
693 /*
694 * Check JSDT probe
695 */
696 JNIEXPORT jboolean JNICALL
697 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
698
699 /*
700 * Destroy custom DOF
701 */
702 JNIEXPORT void JNICALL
703 JVM_DTraceDispose(JNIEnv* env, jlong handle);
704
705 /*
706 * Check to see if DTrace is supported by OS
707 */
708 JNIEXPORT jboolean JNICALL
709 JVM_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 */
721 JNIEXPORT const char * JNICALL
722 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
723
724 /*
725 * Returns the constant pool types in the buffer provided by "types."
726 */
727 JNIEXPORT void JNICALL
728 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
729
730 /*
731 * Returns the number of Constant Pool entries.
732 */
733 JNIEXPORT jint JNICALL
734 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
735
736 /*
737 * Returns the number of *declared* fields or methods.
738 */
739 JNIEXPORT jint JNICALL
740 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
741
742 JNIEXPORT jint JNICALL
743 JVM_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 */
751 JNIEXPORT void JNICALL
752 JVM_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 */
758 JNIEXPORT jint JNICALL
759 JVM_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 */
767 JNIEXPORT void JNICALL
768 JVM_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 */
775 JNIEXPORT jint JNICALL
776 JVM_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 */
781 typedef 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 */
794 JNIEXPORT void JNICALL
795 JVM_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 */
803 JNIEXPORT jint JNICALL
804 JVM_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 */
810 JNIEXPORT jint JNICALL
811 JVM_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 */
817 JNIEXPORT jint JNICALL
818 JVM_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 */
824 JNIEXPORT jint JNICALL
825 JVM_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 */
831 JNIEXPORT jint JNICALL
832 JVM_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 */
838 JNIEXPORT jint JNICALL
839 JVM_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 */
845 JNIEXPORT jboolean JNICALL
846 JVM_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 */
855 JNIEXPORT const char * JNICALL
856 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
857
858 /*
859 * Returns the signature of a given method in UTF format.
860 * The result remains valid until JVM_ReleaseUTF is called.
861 *
862 * The caller must treat the string as a constant and not modify it
863 * in any way.
864 */
865 JNIEXPORT const char * JNICALL
866 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
867
868 /*
869 * Returns the name of the field 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 */
878 JNIEXPORT const char * JNICALL
879 JVM_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 */
891 JNIEXPORT const char * JNICALL
892 JVM_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 */
904 JNIEXPORT const char * JNICALL
905 JVM_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 */
917 JNIEXPORT const char * JNICALL
918 JVM_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 */
929 JNIEXPORT const char * JNICALL
930 JVM_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 */
943 JNIEXPORT const char * JNICALL
944 JVM_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 */
958 JNIEXPORT const char * JNICALL
959 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
960
961 /*
962 * Returns the modifiers of a field in calledClass. The field is
963 * referred to in class cb at constant pool entry index.
964 *
965 * The caller must treat the string as a constant and not modify it
966 * in any way.
967 *
968 * Returns -1 if the field does not exist in calledClass.
969 */
970 JNIEXPORT jint JNICALL
971 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
972
973 /*
974 * Returns the modifiers of a method in calledClass. The method is
975 * referred to in class cb at constant pool entry index.
976 *
977 * Returns -1 if the method does not exist in calledClass.
978 */
979 JNIEXPORT jint JNICALL
980 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
981
982 /*
983 * Releases the UTF string obtained from the VM.
984 */
985 JNIEXPORT void JNICALL
986 JVM_ReleaseUTF(const char *utf);
987
988 /*
989 * Compare if two classes are in the same package.
990 */
991 JNIEXPORT jboolean JNICALL
992 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
993
994 /* 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
1035 enum {
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 JVM_CONSTANT_MethodHandle = 15, // JSR 292
1049 JVM_CONSTANT_MethodType = 16, // JSR 292
1050 JVM_CONSTANT_InvokeDynamic = 17 // JSR 292
1051 };
1052
1053 /* JVM_CONSTANT_MethodHandle subtypes */
1054 enum {
1055 JVM_REF_getField = 1,
1056 JVM_REF_getStatic = 2,
1057 JVM_REF_putField = 3,
1058 JVM_REF_putStatic = 4,
1059 JVM_REF_invokeVirtual = 5,
1060 JVM_REF_invokeStatic = 6,
1061 JVM_REF_invokeSpecial = 7,
1062 JVM_REF_newInvokeSpecial = 8,
1063 JVM_REF_invokeInterface = 9
1064 };
1065
1066 /* Used in the newarray instruction. */
1067
1068 #define JVM_T_BOOLEAN 4
1069 #define JVM_T_CHAR 5
1070 #define JVM_T_FLOAT 6
1071 #define JVM_T_DOUBLE 7
1072 #define JVM_T_BYTE 8
1073 #define JVM_T_SHORT 9
1074 #define JVM_T_INT 10
1075 #define JVM_T_LONG 11
1076
1077 /* JVM method signatures */
1078
1079 #define JVM_SIGNATURE_ARRAY '['
1080 #define JVM_SIGNATURE_BYTE 'B'
1081 #define JVM_SIGNATURE_CHAR 'C'
1082 #define JVM_SIGNATURE_CLASS 'L'
1083 #define JVM_SIGNATURE_ENDCLASS ';'
1084 #define JVM_SIGNATURE_ENUM 'E'
1085 #define JVM_SIGNATURE_FLOAT 'F'
1086 #define JVM_SIGNATURE_DOUBLE 'D'
1087 #define JVM_SIGNATURE_FUNC '('
1088 #define JVM_SIGNATURE_ENDFUNC ')'
1089 #define JVM_SIGNATURE_INT 'I'
1090 #define JVM_SIGNATURE_LONG 'J'
1091 #define JVM_SIGNATURE_SHORT 'S'
1092 #define JVM_SIGNATURE_VOID 'V'
1093 #define JVM_SIGNATURE_BOOLEAN 'Z'
1094
1095 /*
1096 * A function defined by the byte-code verifier and called by the VM.
1097 * This is not a function implemented in the VM.
1098 *
1099 * Returns JNI_FALSE if verification fails. A detailed error message
1100 * will be places in msg_buf, whose length is specified by buf_len.
1101 */
1102 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1103 jclass cb,
1104 char * msg_buf,
1105 jint buf_len);
1106
1107
1108 /*
1109 * Support for a VM-independent class format checker.
1110 */
1111 typedef struct {
1112 unsigned long code; /* byte code */
1113 unsigned long excs; /* exceptions */
1114 unsigned long etab; /* catch table */
1115 unsigned long lnum; /* line number */
1116 unsigned long lvar; /* local vars */
1117 } method_size_info;
1118
1119 typedef struct {
1120 unsigned int constants; /* constant pool */
1121 unsigned int fields;
1122 unsigned int methods;
1123 unsigned int interfaces;
1124 unsigned int fields2; /* number of static 2-word fields */
1125 unsigned int innerclasses; /* # of records in InnerClasses attr */
1126
1127 method_size_info clinit; /* memory used in clinit */
1128 method_size_info main; /* used everywhere else */
1129 } class_size_info;
1130
1131 /*
1132 * Functions defined in libjava.so to perform string conversions.
1133 *
1134 */
1135
1136 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1137
1138 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1139
1140 /* This is the function defined in libjava.so that performs class
1141 * format checks. This functions fills in size information about
1142 * the class file and returns:
1143 *
1144 * 0: good
1145 * -1: out of memory
1146 * -2: bad format
1147 * -3: unsupported version
1148 * -4: bad class name
1149 */
1150
1151 typedef jint (*check_format_fn_t)(char *class_name,
1152 unsigned char *data,
1153 unsigned int data_size,
1154 class_size_info *class_size,
1155 char *message_buffer,
1156 jint buffer_length,
1157 jboolean measure_only,
1158 jboolean check_relaxed);
1159
1160 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1161 JVM_ACC_FINAL | \
1162 JVM_ACC_SUPER | \
1163 JVM_ACC_INTERFACE | \
1164 JVM_ACC_ABSTRACT | \
1165 JVM_ACC_ANNOTATION | \
1166 JVM_ACC_ENUM | \
1167 JVM_ACC_SYNTHETIC)
1168
1169 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1170 JVM_ACC_PRIVATE | \
1171 JVM_ACC_PROTECTED | \
1172 JVM_ACC_STATIC | \
1173 JVM_ACC_FINAL | \
1174 JVM_ACC_VOLATILE | \
1175 JVM_ACC_TRANSIENT | \
1176 JVM_ACC_ENUM | \
1177 JVM_ACC_SYNTHETIC)
1178
1179 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1180 JVM_ACC_PRIVATE | \
1181 JVM_ACC_PROTECTED | \
1182 JVM_ACC_STATIC | \
1183 JVM_ACC_FINAL | \
1184 JVM_ACC_SYNCHRONIZED | \
1185 JVM_ACC_BRIDGE | \
1186 JVM_ACC_VARARGS | \
1187 JVM_ACC_NATIVE | \
1188 JVM_ACC_ABSTRACT | \
1189 JVM_ACC_STRICT | \
1190 JVM_ACC_SYNTHETIC)
1191
1192 /*
1193 * This is the function defined in libjava.so to perform path
1194 * canonicalization. VM call this function before opening jar files
1195 * to load system classes.
1196 *
1197 */
1198
1199 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1200
1201 /*************************************************************************
1202 PART 3: I/O and Network Support
1203 ************************************************************************/
1204
1205 /* Note that the JVM IO functions are expected to return JVM_IO_ERR
1206 * when there is any kind of error. The caller can then use the
1207 * platform specific support (e.g., errno) to get the detailed
1208 * error info. The JVM_GetLastErrorString procedure may also be used
1209 * to obtain a descriptive error string.
1210 */
1211 #define JVM_IO_ERR (-1)
1212
1213 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO
1214 * operation has been disrupted by Thread.interrupt. There are a
1215 * number of technical difficulties related to interruptible IO that
1216 * need to be solved. For example, most existing programs do not handle
1217 * InterruptedIOExceptions specially, they simply treat those as any
1218 * IOExceptions, which typically indicate fatal errors.
1219 *
1220 * There are also two modes of operation for interruptible IO. In the
1221 * resumption mode, an interrupted IO operation is guaranteed not to
1222 * have any side-effects, and can be restarted. In the termination mode,
1223 * an interrupted IO operation corrupts the underlying IO stream, so
1224 * that the only reasonable operation on an interrupted stream is to
1225 * close that stream. The resumption mode seems to be impossible to
1226 * implement on Win32 and Solaris. Implementing the termination mode is
1227 * easier, but it's not clear that's the right semantics.
1228 *
1229 * Interruptible IO is not supported on Win32.It can be enabled/disabled
1230 * using a compile-time flag on Solaris. Third-party JVM ports do not
1231 * need to implement interruptible IO.
1232 */
1233 #define JVM_IO_INTR (-2)
1234
1235 /* Write a string into the given buffer, in the platform's local encoding,
1236 * that describes the most recent system-level error to occur in this thread.
1237 * Return the length of the string or zero if no error occurred.
1238 */
1239 JNIEXPORT jint JNICALL
1240 JVM_GetLastErrorString(char *buf, int len);
1241
1242 /*
1243 * Convert a pathname into native format. This function does syntactic
1244 * cleanup, such as removing redundant separator characters. It modifies
1245 * the given pathname string in place.
1246 */
1247 JNIEXPORT char * JNICALL
1248 JVM_NativePath(char *);
1249
1250 /*
1251 * JVM I/O error codes
1252 */
1253 #define JVM_EEXIST -100
1254
1255 /*
1256 * Open a file descriptor. This function returns a negative error code
1257 * on error, and a non-negative integer that is the file descriptor on
1258 * success.
1259 */
1260 JNIEXPORT jint JNICALL
1261 JVM_Open(const char *fname, jint flags, jint mode);
1262
1263 /*
1264 * Close a file descriptor. This function returns -1 on error, and 0
1265 * on success.
1266 *
1267 * fd the file descriptor to close.
1268 */
1269 JNIEXPORT jint JNICALL
1270 JVM_Close(jint fd);
1271
1272 /*
1273 * Read data from a file decriptor into a char array.
1274 *
1275 * fd the file descriptor to read from.
1276 * buf the buffer where to put the read data.
1277 * nbytes the number of bytes to read.
1278 *
1279 * This function returns -1 on error, and 0 on success.
1280 */
1281 JNIEXPORT jint JNICALL
1282 JVM_Read(jint fd, char *buf, jint nbytes);
1283
1284 /*
1285 * Write data from a char array to a file decriptor.
1286 *
1287 * fd the file descriptor to read from.
1288 * buf the buffer from which to fetch the data.
1289 * nbytes the number of bytes to write.
1290 *
1291 * This function returns -1 on error, and 0 on success.
1292 */
1293 JNIEXPORT jint JNICALL
1294 JVM_Write(jint fd, char *buf, jint nbytes);
1295
1296 /*
1297 * Returns the number of bytes available for reading from a given file
1298 * descriptor
1299 */
1300 JNIEXPORT jint JNICALL
1301 JVM_Available(jint fd, jlong *pbytes);
1302
1303 /*
1304 * Move the file descriptor pointer from whence by offset.
1305 *
1306 * fd the file descriptor to move.
1307 * offset the number of bytes to move it by.
1308 * whence the start from where to move it.
1309 *
1310 * This function returns the resulting pointer location.
1311 */
1312 JNIEXPORT jlong JNICALL
1313 JVM_Lseek(jint fd, jlong offset, jint whence);
1314
1315 /*
1316 * Set the length of the file associated with the given descriptor to the given
1317 * length. If the new length is longer than the current length then the file
1318 * is extended; the contents of the extended portion are not defined. The
1319 * value of the file pointer is undefined after this procedure returns.
1320 */
1321 JNIEXPORT jint JNICALL
1322 JVM_SetLength(jint fd, jlong length);
1323
1324 /*
1325 * Synchronize the file descriptor's in memory state with that of the
1326 * physical device. Return of -1 is an error, 0 is OK.
1327 */
1328 JNIEXPORT jint JNICALL
1329 JVM_Sync(jint fd);
1330
1331 /*
1332 * Networking library support
1333 */
1334
1335 JNIEXPORT jint JNICALL
1336 JVM_InitializeSocketLibrary(void);
1337
1338 struct sockaddr;
1339
1340 JNIEXPORT jint JNICALL
1341 JVM_Socket(jint domain, jint type, jint protocol);
1342
1343 JNIEXPORT jint JNICALL
1344 JVM_SocketClose(jint fd);
1345
1346 JNIEXPORT jint JNICALL
1347 JVM_SocketShutdown(jint fd, jint howto);
1348
1349 JNIEXPORT jint JNICALL
1350 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags);
1351
1352 JNIEXPORT jint JNICALL
1353 JVM_Send(jint fd, char *buf, jint nBytes, jint flags);
1354
1355 JNIEXPORT jint JNICALL
1356 JVM_Timeout(int fd, long timeout);
1357
1358 JNIEXPORT jint JNICALL
1359 JVM_Listen(jint fd, jint count);
1360
1361 JNIEXPORT jint JNICALL
1362 JVM_Connect(jint fd, struct sockaddr *him, jint len);
1363
1364 JNIEXPORT jint JNICALL
1365 JVM_Bind(jint fd, struct sockaddr *him, jint len);
1366
1367 JNIEXPORT jint JNICALL
1368 JVM_Accept(jint fd, struct sockaddr *him, jint *len);
1369
1370 JNIEXPORT jint JNICALL
1371 JVM_RecvFrom(jint fd, char *buf, int nBytes,
1372 int flags, struct sockaddr *from, int *fromlen);
1373
1374 JNIEXPORT jint JNICALL
1375 JVM_SendTo(jint fd, char *buf, int len,
1376 int flags, struct sockaddr *to, int tolen);
1377
1378 JNIEXPORT jint JNICALL
1379 JVM_SocketAvailable(jint fd, jint *result);
1380
1381
1382 JNIEXPORT jint JNICALL
1383 JVM_GetSockName(jint fd, struct sockaddr *him, int *len);
1384
1385 JNIEXPORT jint JNICALL
1386 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen);
1387
1388 JNIEXPORT jint JNICALL
1389 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen);
1390
1391 /*
1392 * These routines are only reentrant on Windows
1393 */
1394
1395 #ifdef _WINDOWS
1396
1397 JNIEXPORT struct protoent * JNICALL
1398 JVM_GetProtoByName(char* name);
1399
1400 JNIEXPORT struct hostent* JNICALL
1401 JVM_GetHostByAddr(const char* name, int len, int type);
1402
1403 JNIEXPORT struct hostent* JNICALL
1404 JVM_GetHostByName(char* name);
1405
1406 #endif /* _WINDOWS */
1407
1408 JNIEXPORT int JNICALL
1409 JVM_GetHostName(char* name, int namelen);
1410
1411 /*
1412 * The standard printing functions supported by the Java VM. (Should they
1413 * be renamed to JVM_* in the future?
1414 */
1415
1416 /*
1417 * BE CAREFUL! The following functions do not implement the
1418 * full feature set of standard C printf formats.
1419 */
1420 int
1421 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1422
1423 int
1424 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1425
1426 int
1427 jio_fprintf(FILE *, const char *fmt, ...);
1428
1429 int
1430 jio_vfprintf(FILE *, const char *fmt, va_list args);
1431
1432
1433 JNIEXPORT void * JNICALL
1434 JVM_RawMonitorCreate(void);
1435
1436 JNIEXPORT void JNICALL
1437 JVM_RawMonitorDestroy(void *mon);
1438
1439 JNIEXPORT jint JNICALL
1440 JVM_RawMonitorEnter(void *mon);
1441
1442 JNIEXPORT void JNICALL
1443 JVM_RawMonitorExit(void *mon);
1444
1445
1446 #ifdef SUPPORT_OLD_REFLECTION
1447
1448 /*
1449 * Support for old native code-based (pre-JDK 1.4) reflection implementation.
1450 * Disabled by default in the product build.
1451 *
1452 * See reflection.hpp for information on SUPPORT_OLD_REFLECTION
1453 */
1454
1455 /*
1456 * reflecting fields and methods.
1457 * which: 0 --- MEMBER_PUBLIC
1458 * 1 --- MEMBER_DECLARED
1459 * NOTE: absent in product build by default
1460 */
1461
1462 JNIEXPORT jobjectArray JNICALL
1463 JVM_GetClassFields(JNIEnv *env, jclass cls, jint which);
1464
1465 JNIEXPORT jobjectArray JNICALL
1466 JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which);
1467
1468 JNIEXPORT jobjectArray JNICALL
1469 JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which);
1470
1471 JNIEXPORT jobject JNICALL
1472 JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which);
1473
1474 JNIEXPORT jobject JNICALL
1475 JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types,
1476 jint which);
1477 JNIEXPORT jobject JNICALL
1478 JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types,
1479 jint which);
1480
1481 /*
1482 * Implements Class.newInstance
1483 */
1484 JNIEXPORT jobject JNICALL
1485 JVM_NewInstance(JNIEnv *env, jclass cls);
1486
1487 /*
1488 * java.lang.reflect.Field
1489 */
1490 JNIEXPORT jobject JNICALL
1491 JVM_GetField(JNIEnv *env, jobject field, jobject obj);
1492
1493 JNIEXPORT jvalue JNICALL
1494 JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj,
1495 unsigned char wCode);
1496
1497 JNIEXPORT void JNICALL
1498 JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val);
1499
1500 JNIEXPORT void JNICALL
1501 JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v,
1502 unsigned char vCode);
1503
1504 /*
1505 * java.lang.reflect.Method
1506 */
1507 JNIEXPORT jobject JNICALL
1508 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1509
1510 /*
1511 * java.lang.reflect.Constructor
1512 */
1513 JNIEXPORT jobject JNICALL
1514 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1515
1516 #endif /* SUPPORT_OLD_REFLECTION */
1517
1518 /*
1519 * java.lang.management support
1520 */
1521 JNIEXPORT void* JNICALL
1522 JVM_GetManagement(jint version);
1523
1524 /*
1525 * com.sun.tools.attach.VirtualMachine support
1526 *
1527 * Initialize the agent properties with the properties maintained in the VM.
1528 */
1529 JNIEXPORT jobject JNICALL
1530 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1531
1532 /* Generics reflection support.
1533 *
1534 * Returns information about the given class's EnclosingMethod
1535 * attribute, if present, or null if the class had no enclosing
1536 * method.
1537 *
1538 * If non-null, the returned array contains three elements. Element 0
1539 * is the java.lang.Class of which the enclosing method is a member,
1540 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1541 * method's name and descriptor, respectively.
1542 */
1543 JNIEXPORT jobjectArray JNICALL
1544 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1545
1546 /*
1547 * Java thread state support
1548 */
1549 enum {
1550 JAVA_THREAD_STATE_NEW = 0,
1551 JAVA_THREAD_STATE_RUNNABLE = 1,
1552 JAVA_THREAD_STATE_BLOCKED = 2,
1553 JAVA_THREAD_STATE_WAITING = 3,
1554 JAVA_THREAD_STATE_TIMED_WAITING = 4,
1555 JAVA_THREAD_STATE_TERMINATED = 5,
1556 JAVA_THREAD_STATE_COUNT = 6
1557 };
1558
1559 /*
1560 * Returns an array of the threadStatus values representing the
1561 * given Java thread state. Returns NULL if the VM version is
1562 * incompatible with the JDK or doesn't support the given
1563 * Java thread state.
1564 */
1565 JNIEXPORT jintArray JNICALL
1566 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState);
1567
1568 /*
1569 * Returns an array of the substate names representing the
1570 * given Java thread state. Returns NULL if the VM version is
1571 * incompatible with the JDK or the VM doesn't support
1572 * the given Java thread state.
1573 * values must be the jintArray returned from JVM_GetThreadStateValues
1574 * and javaThreadState.
1575 */
1576 JNIEXPORT jobjectArray JNICALL
1577 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values);
1578
1579 /* =========================================================================
1580 * The following defines a private JVM interface that the JDK can query
1581 * for the JVM version and capabilities. sun.misc.Version defines
1582 * the methods for getting the VM version and its capabilities.
1583 *
1584 * When a new bit is added, the following should be updated to provide
1585 * access to the new capability:
1586 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1587 * SDK: Version class
1588 *
1589 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1590 * JVM to query for the JDK version and capabilities.
1591 *
1592 * When a new bit is added, the following should be updated to provide
1593 * access to the new capability:
1594 * HS: JDK_Version class
1595 * SDK: JDK_GetVersionInfo0
1596 *
1597 * ==========================================================================
1598 */
1599 typedef struct {
1600 /* HotSpot Express VM version string:
1601 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>]
1602 */
1603 unsigned int jvm_version; /* Consists of major.minor.0.build */
1604 unsigned int update_version : 8; /* 0 in HotSpot Express VM */
1605 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */
1606 unsigned int reserved1 : 16;
1607 unsigned int reserved2;
1608
1609 /* The following bits represents JVM supports that JDK has dependency on.
1610 * JDK can use these bits to determine which JVM version
1611 * and support it has to maintain runtime compatibility.
1612 *
1613 * When a new bit is added in a minor or update release, make sure
1614 * the new bit is also added in the main/baseline.
1615 */
1616 unsigned int is_attachable : 1;
1617 unsigned int is_kernel_jvm : 1;
1618 unsigned int : 30;
1619 unsigned int : 32;
1620 unsigned int : 32;
1621 } jvm_version_info;
1622
1623 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1624 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1625 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp).
1626 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1627 /* Build number is available in all HotSpot Express VM builds.
1628 * It is defined in make/hotspot_version file.
1629 */
1630 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1631
1632 JNIEXPORT void JNICALL
1633 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1634
1635 typedef struct {
1636 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
1637 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */
1638 /* and build number (xx) */
1639 unsigned int update_version : 8; /* Update release version (uu) */
1640 unsigned int special_update_version : 8; /* Special update release version (c)*/
1641 unsigned int reserved1 : 16;
1642 unsigned int reserved2;
1643
1644 /* The following bits represents new JDK supports that VM has dependency on.
1645 * VM implementation can use these bits to determine which JDK version
1646 * and support it has to maintain runtime compatibility.
1647 *
1648 * When a new bit is added in a minor or update release, make sure
1649 * the new bit is also added in the main/baseline.
1650 */
1651 unsigned int thread_park_blocker : 1;
1652 unsigned int : 31;
1653 unsigned int : 32;
1654 unsigned int : 32;
1655 } jdk_version_info;
1656
1657 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1658 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1659 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1660
1661 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
1662 * It will be zero for internal builds.
1663 */
1664 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1665
1666 /*
1667 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1668 * that is dynamically looked up by JVM.
1669 */
1670 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1671
1672 /*
1673 * This structure is used by the launcher to get the default thread
1674 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1675 * version of 1.1. As it is not supported otherwise, it has been removed
1676 * from jni.h
1677 */
1678 typedef struct JDK1_1InitArgs {
1679 jint version;
1680
1681 char **properties;
1682 jint checkSource;
1683 jint nativeStackSize;
1684 jint javaStackSize;
1685 jint minHeapSize;
1686 jint maxHeapSize;
1687 jint verifyMode;
1688 char *classpath;
1689
1690 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1691 void (JNICALL *exit)(jint code);
1692 void (JNICALL *abort)(void);
1693
1694 jint enableClassGC;
1695 jint enableVerboseGC;
1696 jint disableAsyncGC;
1697 jint verbose;
1698 jboolean debugging;
1699 jint debugPort;
1700 } JDK1_1InitArgs;
1701
1702 #ifdef __cplusplus
1703 } /* extern "C" */
1704 #endif /* __cplusplus */
1705
1706 #endif /* !_JAVASOFT_JVM_H_ */