1 /*
2 * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #ifndef _JAVASOFT_JVM_H_
27 #define _JAVASOFT_JVM_H_
28
29 #include <sys/stat.h>
30
31 #include "jni.h"
32 #include "jvm_md.h"
33
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37
38 /*
39 * This file contains additional functions exported from the VM.
40 * These functions are complementary to the standard JNI support.
41 * There are three parts to this file:
42 *
43 * First, this file contains the VM-related functions needed by native
44 * libraries in the standard Java API. For example, the java.lang.Object
45 * class needs VM-level functions that wait for and notify monitors.
46 *
47 * Second, this file contains the functions and constant definitions
48 * needed by the byte code verifier and class file format checker.
49 * These functions allow the verifier and format checker to be written
50 * in a VM-independent way.
51 *
52 * Third, this file contains various I/O and network operations needed
53 * by the standard Java I/O and network APIs.
54 */
55
56 /*
57 * Bump the version number when either of the following happens:
58 *
59 * 1. There is a change in JVM_* functions.
60 *
61 * 2. There is a change in the contract between VM and Java classes.
62 * For example, if the VM relies on a new private field in Thread
63 * class.
64 */
65
66 #define JVM_INTERFACE_VERSION 6
67
68 JNIEXPORT jint JNICALL
69 JVM_GetInterfaceVersion(void);
70
71 /*************************************************************************
72 PART 1: Functions for Native Libraries
73 ************************************************************************/
74 /*
75 * java.lang.Object
76 */
77 JNIEXPORT jint JNICALL
78 JVM_IHashCode(JNIEnv *env, jobject obj);
79
80 JNIEXPORT void JNICALL
81 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
82
83 JNIEXPORT void JNICALL
84 JVM_MonitorNotify(JNIEnv *env, jobject obj);
85
86 JNIEXPORT void JNICALL
87 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
88
89 JNIEXPORT jobject JNICALL
90 JVM_Clone(JNIEnv *env, jobject obj);
91
92 /*
93 * java.lang.String
94 */
95 JNIEXPORT jstring JNICALL
96 JVM_InternString(JNIEnv *env, jstring str);
97
98 /*
99 * java.lang.System
100 */
101 JNIEXPORT jlong JNICALL
102 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
103
104 JNIEXPORT jlong JNICALL
105 JVM_NanoTime(JNIEnv *env, jclass ignored);
106
107 JNIEXPORT jlong JNICALL
108 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
109
110 JNIEXPORT void JNICALL
111 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
112 jobject dst, jint dst_pos, jint length);
113
114 /*
115 * Return an array of all properties as alternating name and value pairs.
116 */
117 JNIEXPORT jobjectArray JNICALL
118 JVM_GetProperties(JNIEnv *env);
119
120 /*
121 * java.lang.Runtime
122 */
123 JNIEXPORT void JNICALL
124 JVM_BeforeHalt();
125
126 JNIEXPORT void JNICALL
127 JVM_Halt(jint code);
128
129 JNIEXPORT void JNICALL
130 JVM_GC(void);
131
132 /* Returns the number of real-time milliseconds that have elapsed since the
133 * least-recently-inspected heap object was last inspected by the garbage
134 * collector.
135 *
136 * For simple stop-the-world collectors this value is just the time
137 * since the most recent collection. For generational collectors it is the
138 * time since the oldest generation was most recently collected. Other
139 * collectors are free to return a pessimistic estimate of the elapsed time, or
140 * simply the time since the last full collection was performed.
141 *
142 * Note that in the presence of reference objects, a given object that is no
143 * longer strongly reachable may have to be inspected multiple times before it
144 * can be reclaimed.
145 */
146 JNIEXPORT jlong JNICALL
147 JVM_MaxObjectInspectionAge(void);
148
149 JNIEXPORT jlong JNICALL
150 JVM_TotalMemory(void);
151
152 JNIEXPORT jlong JNICALL
153 JVM_FreeMemory(void);
154
155 JNIEXPORT jlong JNICALL
156 JVM_MaxMemory(void);
157
158 JNIEXPORT jint JNICALL
159 JVM_ActiveProcessorCount(void);
160
161 JNIEXPORT void * JNICALL
162 JVM_LoadLibrary(const char *name);
163
164 JNIEXPORT void JNICALL
165 JVM_UnloadLibrary(void * handle);
166
167 JNIEXPORT void * JNICALL
168 JVM_FindLibraryEntry(void *handle, const char *name);
169
170 JNIEXPORT jboolean JNICALL
171 JVM_IsSupportedJNIVersion(jint version);
172
173 JNIEXPORT jobjectArray JNICALL
174 JVM_GetVmArguments(JNIEnv *env);
175
176 JNIEXPORT void JNICALL
177 JVM_InitializeFromArchive(JNIEnv* env, jclass cls);
178
179 /*
180 * java.lang.Throwable
181 */
182 JNIEXPORT void JNICALL
183 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
184
185 /*
186 * java.lang.StackTraceElement
187 */
188 JNIEXPORT void JNICALL
189 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
190
191 JNIEXPORT void JNICALL
192 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
193
194 /*
195 * java.lang.NullPointerException
196 */
197
198 JNIEXPORT jstring JNICALL
199 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
200
201 /*
202 * java.lang.StackWalker
203 */
204 enum {
205 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
206 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
207 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
208 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
209 };
210
211 JNIEXPORT jobject JNICALL
212 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
213 jint skip_frames, jint frame_count, jint start_index,
214 jobjectArray frames);
215
216 JNIEXPORT jint JNICALL
217 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
218 jint frame_count, jint start_index,
219 jobjectArray frames);
220
221 /*
222 * java.lang.Thread
223 */
224 JNIEXPORT void JNICALL
225 JVM_StartThread(JNIEnv *env, jobject thread);
226
227 JNIEXPORT void JNICALL
228 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
229
230 JNIEXPORT jboolean JNICALL
231 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
232
233 JNIEXPORT void JNICALL
234 JVM_SuspendThread(JNIEnv *env, jobject thread);
235
236 JNIEXPORT void JNICALL
237 JVM_ResumeThread(JNIEnv *env, jobject thread);
238
239 JNIEXPORT void JNICALL
240 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
241
242 JNIEXPORT void JNICALL
243 JVM_Yield(JNIEnv *env, jclass threadClass);
244
245 JNIEXPORT void JNICALL
246 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
247
248 JNIEXPORT jobject JNICALL
249 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
250
251 JNIEXPORT void JNICALL
252 JVM_Interrupt(JNIEnv *env, jobject thread);
253
254 JNIEXPORT jboolean JNICALL
255 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
256
257 JNIEXPORT void JNICALL
258 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
259
260 JNIEXPORT jobjectArray JNICALL
261 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
262
263 JNIEXPORT void JNICALL
264 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
265
266 /* getStackTrace() and getAllStackTraces() method */
267 JNIEXPORT jobjectArray JNICALL
268 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
269
270 /*
271 * java.lang.SecurityManager
272 */
273 JNIEXPORT jobjectArray JNICALL
274 JVM_GetClassContext(JNIEnv *env);
275
276 /*
277 * java.lang.Package
278 */
279 JNIEXPORT jstring JNICALL
280 JVM_GetSystemPackage(JNIEnv *env, jstring name);
281
282 JNIEXPORT jobjectArray JNICALL
283 JVM_GetSystemPackages(JNIEnv *env);
284
285 /*
286 * java.lang.ref.Reference
287 */
288 JNIEXPORT jobject JNICALL
289 JVM_GetAndClearReferencePendingList(JNIEnv *env);
290
291 JNIEXPORT jboolean JNICALL
292 JVM_HasReferencePendingList(JNIEnv *env);
293
294 JNIEXPORT void JNICALL
295 JVM_WaitForReferencePendingList(JNIEnv *env);
296
297 /*
298 * java.io.ObjectInputStream
299 */
300 JNIEXPORT jobject JNICALL
301 JVM_LatestUserDefinedLoader(JNIEnv *env);
302
303 /*
304 * java.lang.reflect.Array
305 */
306 JNIEXPORT jint JNICALL
307 JVM_GetArrayLength(JNIEnv *env, jobject arr);
308
309 JNIEXPORT jobject JNICALL
310 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
311
312 JNIEXPORT jvalue JNICALL
313 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
314
315 JNIEXPORT void JNICALL
316 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
317
318 JNIEXPORT void JNICALL
319 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
320 unsigned char vCode);
321
322 JNIEXPORT jobject JNICALL
323 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
324
325 JNIEXPORT jobject JNICALL
326 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
327
328
329 /*
330 * Returns the immediate caller class of the native method invoking
331 * JVM_GetCallerClass. The Method.invoke and other frames due to
332 * reflection machinery are skipped.
333 *
334 * The caller is expected to be marked with
335 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
336 * error if it is not marked properly.
337 */
338 JNIEXPORT jclass JNICALL
339 JVM_GetCallerClass(JNIEnv *env);
340
341
342 /*
343 * Find primitive classes
344 * utf: class name
345 */
346 JNIEXPORT jclass JNICALL
347 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
348
349
350 /*
351 * Find a class from a boot class loader. Returns NULL if class not found.
352 */
353 JNIEXPORT jclass JNICALL
354 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
355
356 /*
357 * Find a class from a given class loader. Throws ClassNotFoundException.
358 * name: name of class
359 * init: whether initialization is done
360 * loader: class loader to look up the class. This may not be the same as the caller's
361 * class loader.
362 * caller: initiating class. The initiating class may be null when a security
363 * manager is not installed.
364 */
365 JNIEXPORT jclass JNICALL
366 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
367 jobject loader, jclass caller);
368
369 /*
370 * Find a class from a given class.
371 */
372 JNIEXPORT jclass JNICALL
373 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
374 jclass from);
375
376 /* Find a loaded class cached by the VM */
377 JNIEXPORT jclass JNICALL
378 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
379
380 /* Define a class */
381 JNIEXPORT jclass JNICALL
382 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
383 jsize len, jobject pd);
384
385 /* Define a class with a source (added in JDK1.5) */
386 JNIEXPORT jclass JNICALL
387 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
388 const jbyte *buf, jsize len, jobject pd,
389 const char *source);
390
391 /*
392 * Define a class with the specified lookup class.
393 * lookup: Lookup class
394 * name: the name of the class
395 * buf: class bytes
396 * len: length of class bytes
397 * pd: protection domain
398 * init: initialize the class
399 * flags: properties of the class
400 * classData: private static pre-initialized field; may be null
401 */
402 JNIEXPORT jclass JNICALL
403 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
404 jsize len, jobject pd, jboolean init, int flags, jobject classData);
405
406 /*
407 * Module support funcions
408 */
409
410 /*
411 * Define a module with the specified packages and bind the module to the
412 * given class loader.
413 * module: module to define
414 * is_open: specifies if module is open (currently ignored)
415 * version: the module version
416 * location: the module location
417 * packages: list of packages in the module
418 * num_packages: number of packages in the module
419 */
420 JNIEXPORT void JNICALL
421 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
422 jstring location, const char* const* packages, jsize num_packages);
423
424 /*
425 * Set the boot loader's unnamed module.
426 * module: boot loader's unnamed module
427 */
428 JNIEXPORT void JNICALL
429 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
430
431 /*
432 * Do a qualified export of a package.
433 * from_module: module containing the package to export
434 * package: name of the package to export
435 * to_module: module to export the package to
436 */
437 JNIEXPORT void JNICALL
438 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
439
440 /*
441 * Do an export of a package to all unnamed modules.
442 * from_module: module containing the package to export
443 * package: name of the package to export to all unnamed modules
444 */
445 JNIEXPORT void JNICALL
446 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
447
448 /*
449 * Do an unqualified export of a package.
450 * from_module: module containing the package to export
451 * package: name of the package to export
452 */
453 JNIEXPORT void JNICALL
454 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
455
456 /*
457 * Add a module to the list of modules that a given module can read.
458 * from_module: module requesting read access
459 * source_module: module that from_module wants to read
460 */
461 JNIEXPORT void JNICALL
462 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
463
464 /*
465 * Reflection support functions
466 */
467
468 JNIEXPORT jstring JNICALL
469 JVM_InitClassName(JNIEnv *env, jclass cls);
470
471 JNIEXPORT jobjectArray JNICALL
472 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
473
474 JNIEXPORT jboolean JNICALL
475 JVM_IsInterface(JNIEnv *env, jclass cls);
476
477 JNIEXPORT jobjectArray JNICALL
478 JVM_GetClassSigners(JNIEnv *env, jclass cls);
479
480 JNIEXPORT void JNICALL
481 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
482
483 JNIEXPORT jobject JNICALL
484 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
485
486 JNIEXPORT jboolean JNICALL
487 JVM_IsArrayClass(JNIEnv *env, jclass cls);
488
489 JNIEXPORT jboolean JNICALL
490 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
491
492 JNIEXPORT jboolean JNICALL
493 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
494
495 JNIEXPORT jint JNICALL
496 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
497
498 JNIEXPORT jobjectArray JNICALL
499 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
500
501 JNIEXPORT jclass JNICALL
502 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
503
504 JNIEXPORT jstring JNICALL
505 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
506
507 /* Generics support (JDK 1.5) */
508 JNIEXPORT jstring JNICALL
509 JVM_GetClassSignature(JNIEnv *env, jclass cls);
510
511 /* Annotations support (JDK 1.5) */
512 JNIEXPORT jbyteArray JNICALL
513 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
514
515 /* Type use annotations support (JDK 1.8) */
516
517 JNIEXPORT jbyteArray JNICALL
518 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
519
520 JNIEXPORT jbyteArray JNICALL
521 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
522
523 JNIEXPORT jbyteArray JNICALL
524 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
525
526 /*
527 * New (JDK 1.4) reflection implementation
528 */
529
530 JNIEXPORT jobjectArray JNICALL
531 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
532
533 JNIEXPORT jobjectArray JNICALL
534 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
535
536 JNIEXPORT jobjectArray JNICALL
537 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
538
539
540 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
541 This returns the access flags for the class as specified in the
542 class file rather than searching the InnerClasses attribute (if
543 present) to find the source-level access flags. Only the values of
544 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
545 valid. */
546 JNIEXPORT jint JNICALL
547 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
548
549 /* Nestmates - since JDK 11 */
550
551 JNIEXPORT jboolean JNICALL
552 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
553
554 JNIEXPORT jclass JNICALL
555 JVM_GetNestHost(JNIEnv *env, jclass current);
556
557 JNIEXPORT jobjectArray JNICALL
558 JVM_GetNestMembers(JNIEnv *env, jclass current);
559
560 /* Records - since JDK 14 */
561
562 JNIEXPORT jboolean JNICALL
563 JVM_IsRecord(JNIEnv *env, jclass cls);
564
565 JNIEXPORT jobjectArray JNICALL
566 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
567
568 /* The following two reflection routines are still needed due to startup time issues */
569 /*
570 * java.lang.reflect.Method
571 */
572 JNIEXPORT jobject JNICALL
573 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
574
575 /*
576 * java.lang.reflect.Constructor
577 */
578 JNIEXPORT jobject JNICALL
579 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
580
581 /*
582 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
583 */
584
585 JNIEXPORT jobject JNICALL
586 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
587
588 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
589 (JNIEnv *env, jobject unused, jobject jcpool);
590
591 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
592 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
593
594 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
595 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
596
597 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
598 (JNIEnv *env, jobject obj, jobject unused, jint index);
599
600 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
601 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
602
603 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
604 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
605
606 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
607 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
608
609 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
610 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
611
612 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
613 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
614
615 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
616 (JNIEnv *env, jobject obj, jobject unused, jint index);
617
618 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
619 (JNIEnv *env, jobject obj, jobject unused, jint index);
620
621 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
622 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
623
624 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
625 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
626
627 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
628 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
629
630 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
631 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
632
633 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
634 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
635
636 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
637 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
638
639 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
640 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
641
642 /*
643 * Parameter reflection
644 */
645
646 JNIEXPORT jobjectArray JNICALL
647 JVM_GetMethodParameters(JNIEnv *env, jobject method);
648
649 /*
650 * java.security.*
651 */
652
653 JNIEXPORT jobject JNICALL
654 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
655
656 /*
657 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
658 * get the value will see a materialized value and not a scalar-replaced
659 * null value.
660 */
661 #define JVM_EnsureMaterializedForStackWalk(env, value) \
662 do {} while(0) // Nothing to do. The fact that the value escaped
663 // through a native method is enough.
664
665 JNIEXPORT jobject JNICALL
666 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
667
668 /*
669 * Signal support, used to implement the shutdown sequence. Every VM must
670 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
671 * (^C) and the latter for external termination (kill, system shutdown, etc.).
672 * Other platform-dependent signal values may also be supported.
673 */
674
675 JNIEXPORT void * JNICALL
676 JVM_RegisterSignal(jint sig, void *handler);
677
678 JNIEXPORT jboolean JNICALL
679 JVM_RaiseSignal(jint sig);
680
681 JNIEXPORT jint JNICALL
682 JVM_FindSignal(const char *name);
683
684 /*
685 * Retrieve the assertion directives for the specified class.
686 */
687 JNIEXPORT jboolean JNICALL
688 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
689
690 /*
691 * Retrieve the assertion directives from the VM.
692 */
693 JNIEXPORT jobject JNICALL
694 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
695
696 /*
697 * java.util.concurrent.atomic.AtomicLong
698 */
699 JNIEXPORT jboolean JNICALL
700 JVM_SupportsCX8(void);
701
702 /*
703 * com.sun.dtrace.jsdt support
704 */
705
706 #define JVM_TRACING_DTRACE_VERSION 1
707
708 /*
709 * Structure to pass one probe description to JVM
710 */
711 typedef struct {
712 jmethodID method;
713 jstring function;
714 jstring name;
715 void* reserved[4]; // for future use
716 } JVM_DTraceProbe;
717
718 /**
719 * Encapsulates the stability ratings for a DTrace provider field
720 */
721 typedef struct {
722 jint nameStability;
723 jint dataStability;
724 jint dependencyClass;
725 } JVM_DTraceInterfaceAttributes;
726
727 /*
728 * Structure to pass one provider description to JVM
729 */
730 typedef struct {
731 jstring name;
732 JVM_DTraceProbe* probes;
733 jint probe_count;
734 JVM_DTraceInterfaceAttributes providerAttributes;
735 JVM_DTraceInterfaceAttributes moduleAttributes;
736 JVM_DTraceInterfaceAttributes functionAttributes;
737 JVM_DTraceInterfaceAttributes nameAttributes;
738 JVM_DTraceInterfaceAttributes argsAttributes;
739 void* reserved[4]; // for future use
740 } JVM_DTraceProvider;
741
742 /*
743 * Get the version number the JVM was built with
744 */
745 JNIEXPORT jint JNICALL
746 JVM_DTraceGetVersion(JNIEnv* env);
747
748 /*
749 * Register new probe with given signature, return global handle
750 *
751 * The version passed in is the version that the library code was
752 * built with.
753 */
754 JNIEXPORT jlong JNICALL
755 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
756 jint providers_count, JVM_DTraceProvider* providers);
757
758 /*
759 * Check JSDT probe
760 */
761 JNIEXPORT jboolean JNICALL
762 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
763
764 /*
765 * Destroy custom DOF
766 */
767 JNIEXPORT void JNICALL
768 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
769
770 /*
771 * Check to see if DTrace is supported by OS
772 */
773 JNIEXPORT jboolean JNICALL
774 JVM_DTraceIsSupported(JNIEnv* env);
775
776 /*************************************************************************
777 PART 2: Support for the Verifier and Class File Format Checker
778 ************************************************************************/
779 /*
780 * Return the class name in UTF format. The result is valid
781 * until JVM_ReleaseUTf is called.
782 *
783 * The caller must treat the string as a constant and not modify it
784 * in any way.
785 */
786 JNIEXPORT const char * JNICALL
787 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
788
789 /*
790 * Returns the constant pool types in the buffer provided by "types."
791 */
792 JNIEXPORT void JNICALL
793 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
794
795 /*
796 * Returns the number of Constant Pool entries.
797 */
798 JNIEXPORT jint JNICALL
799 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
800
801 /*
802 * Returns the number of *declared* fields or methods.
803 */
804 JNIEXPORT jint JNICALL
805 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
806
807 JNIEXPORT jint JNICALL
808 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
809
810 /*
811 * Returns the CP indexes of exceptions raised by a given method.
812 * Places the result in the given buffer.
813 *
814 * The method is identified by method_index.
815 */
816 JNIEXPORT void JNICALL
817 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
818 unsigned short *exceptions);
819 /*
820 * Returns the number of exceptions raised by a given method.
821 * The method is identified by method_index.
822 */
823 JNIEXPORT jint JNICALL
824 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
825
826 /*
827 * Returns the byte code sequence of a given method.
828 * Places the result in the given buffer.
829 *
830 * The method is identified by method_index.
831 */
832 JNIEXPORT void JNICALL
833 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
834 unsigned char *code);
835
836 /*
837 * Returns the length of the byte code sequence of a given method.
838 * The method is identified by method_index.
839 */
840 JNIEXPORT jint JNICALL
841 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
842
843 /*
844 * A structure used to a capture exception table entry in a Java method.
845 */
846 typedef struct {
847 jint start_pc;
848 jint end_pc;
849 jint handler_pc;
850 jint catchType;
851 } JVM_ExceptionTableEntryType;
852
853 /*
854 * Returns the exception table entry at entry_index of a given method.
855 * Places the result in the given buffer.
856 *
857 * The method is identified by method_index.
858 */
859 JNIEXPORT void JNICALL
860 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
861 jint entry_index,
862 JVM_ExceptionTableEntryType *entry);
863
864 /*
865 * Returns the length of the exception table of a given method.
866 * The method is identified by method_index.
867 */
868 JNIEXPORT jint JNICALL
869 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
870
871 /*
872 * Returns the modifiers of a given field.
873 * The field is identified by field_index.
874 */
875 JNIEXPORT jint JNICALL
876 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
877
878 /*
879 * Returns the modifiers of a given method.
880 * The method is identified by method_index.
881 */
882 JNIEXPORT jint JNICALL
883 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
884
885 /*
886 * Returns the number of local variables of a given method.
887 * The method is identified by method_index.
888 */
889 JNIEXPORT jint JNICALL
890 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
891
892 /*
893 * Returns the number of arguments (including this pointer) of a given method.
894 * The method is identified by method_index.
895 */
896 JNIEXPORT jint JNICALL
897 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
898
899 /*
900 * Returns the maximum amount of stack (in words) used by a given method.
901 * The method is identified by method_index.
902 */
903 JNIEXPORT jint JNICALL
904 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
905
906 /*
907 * Is a given method a constructor.
908 * The method is identified by method_index.
909 */
910 JNIEXPORT jboolean JNICALL
911 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
912
913 /*
914 * Is the given method generated by the VM.
915 * The method is identified by method_index.
916 */
917 JNIEXPORT jboolean JNICALL
918 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
919
920 /*
921 * Returns the name of a given method in UTF format.
922 * The result remains valid until JVM_ReleaseUTF is called.
923 *
924 * The caller must treat the string as a constant and not modify it
925 * in any way.
926 */
927 JNIEXPORT const char * JNICALL
928 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
929
930 /*
931 * Returns the signature of a given method in UTF format.
932 * The result remains valid until JVM_ReleaseUTF is called.
933 *
934 * The caller must treat the string as a constant and not modify it
935 * in any way.
936 */
937 JNIEXPORT const char * JNICALL
938 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
939
940 /*
941 * Returns the name of the field referred to at a given constant pool
942 * index.
943 *
944 * The result is in UTF format and remains valid until JVM_ReleaseUTF
945 * is called.
946 *
947 * The caller must treat the string as a constant and not modify it
948 * in any way.
949 */
950 JNIEXPORT const char * JNICALL
951 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
952
953 /*
954 * Returns the name of the method referred to at a given constant pool
955 * index.
956 *
957 * The result is in UTF format and remains valid until JVM_ReleaseUTF
958 * is called.
959 *
960 * The caller must treat the string as a constant and not modify it
961 * in any way.
962 */
963 JNIEXPORT const char * JNICALL
964 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
965
966 /*
967 * Returns the signature of the method referred to at a given constant pool
968 * index.
969 *
970 * The result is in UTF format and remains valid until JVM_ReleaseUTF
971 * is called.
972 *
973 * The caller must treat the string as a constant and not modify it
974 * in any way.
975 */
976 JNIEXPORT const char * JNICALL
977 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
978
979 /*
980 * Returns the signature of the field referred to at a given constant pool
981 * index.
982 *
983 * The result is in UTF format and remains valid until JVM_ReleaseUTF
984 * is called.
985 *
986 * The caller must treat the string as a constant and not modify it
987 * in any way.
988 */
989 JNIEXPORT const char * JNICALL
990 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
991
992 /*
993 * Returns the class name referred to at a given constant pool index.
994 *
995 * The result is in UTF format and remains valid until JVM_ReleaseUTF
996 * is called.
997 *
998 * The caller must treat the string as a constant and not modify it
999 * in any way.
1000 */
1001 JNIEXPORT const char * JNICALL
1002 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1003
1004 /*
1005 * Returns the class name referred to at a given constant pool index.
1006 *
1007 * The constant pool entry must refer to a CONSTANT_Fieldref.
1008 *
1009 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1010 * is called.
1011 *
1012 * The caller must treat the string as a constant and not modify it
1013 * in any way.
1014 */
1015 JNIEXPORT const char * JNICALL
1016 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1017
1018 /*
1019 * Returns the class name referred to at a given constant pool index.
1020 *
1021 * The constant pool entry must refer to CONSTANT_Methodref or
1022 * CONSTANT_InterfaceMethodref.
1023 *
1024 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1025 * is called.
1026 *
1027 * The caller must treat the string as a constant and not modify it
1028 * in any way.
1029 */
1030 JNIEXPORT const char * JNICALL
1031 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1032
1033 /*
1034 * Returns the modifiers of a field in calledClass. The field is
1035 * referred to in class cb at constant pool entry index.
1036 *
1037 * The caller must treat the string as a constant and not modify it
1038 * in any way.
1039 *
1040 * Returns -1 if the field does not exist in calledClass.
1041 */
1042 JNIEXPORT jint JNICALL
1043 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1044
1045 /*
1046 * Returns the modifiers of a method in calledClass. The method is
1047 * referred to in class cb at constant pool entry index.
1048 *
1049 * Returns -1 if the method does not exist in calledClass.
1050 */
1051 JNIEXPORT jint JNICALL
1052 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1053
1054 /*
1055 * Releases the UTF string obtained from the VM.
1056 */
1057 JNIEXPORT void JNICALL
1058 JVM_ReleaseUTF(const char *utf);
1059
1060 /*
1061 * Compare if two classes are in the same package.
1062 */
1063 JNIEXPORT jboolean JNICALL
1064 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1065
1066 /* Get classfile constants */
1067 #include "classfile_constants.h"
1068
1069 /*
1070 * Support for a VM-independent class format checker.
1071 */
1072 typedef struct {
1073 unsigned long code; /* byte code */
1074 unsigned long excs; /* exceptions */
1075 unsigned long etab; /* catch table */
1076 unsigned long lnum; /* line number */
1077 unsigned long lvar; /* local vars */
1078 } method_size_info;
1079
1080 typedef struct {
1081 unsigned int constants; /* constant pool */
1082 unsigned int fields;
1083 unsigned int methods;
1084 unsigned int interfaces;
1085 unsigned int fields2; /* number of static 2-word fields */
1086 unsigned int innerclasses; /* # of records in InnerClasses attr */
1087
1088 method_size_info clinit; /* memory used in clinit */
1089 method_size_info main; /* used everywhere else */
1090 } class_size_info;
1091
1092 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1093 JVM_ACC_FINAL | \
1094 JVM_ACC_SUPER | \
1095 JVM_ACC_INTERFACE | \
1096 JVM_ACC_ABSTRACT | \
1097 JVM_ACC_ANNOTATION | \
1098 JVM_ACC_ENUM | \
1099 JVM_ACC_SYNTHETIC)
1100
1101 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1102 JVM_ACC_PRIVATE | \
1103 JVM_ACC_PROTECTED | \
1104 JVM_ACC_STATIC | \
1105 JVM_ACC_FINAL | \
1106 JVM_ACC_VOLATILE | \
1107 JVM_ACC_TRANSIENT | \
1108 JVM_ACC_ENUM | \
1109 JVM_ACC_SYNTHETIC)
1110
1111 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1112 JVM_ACC_PRIVATE | \
1113 JVM_ACC_PROTECTED | \
1114 JVM_ACC_STATIC | \
1115 JVM_ACC_FINAL | \
1116 JVM_ACC_SYNCHRONIZED | \
1117 JVM_ACC_BRIDGE | \
1118 JVM_ACC_VARARGS | \
1119 JVM_ACC_NATIVE | \
1120 JVM_ACC_ABSTRACT | \
1121 JVM_ACC_STRICT | \
1122 JVM_ACC_SYNTHETIC)
1123
1124
1125 /*************************************************************************
1126 PART 3: I/O and Network Support
1127 ************************************************************************/
1128
1129 /*
1130 * Convert a pathname into native format. This function does syntactic
1131 * cleanup, such as removing redundant separator characters. It modifies
1132 * the given pathname string in place.
1133 */
1134 JNIEXPORT char * JNICALL
1135 JVM_NativePath(char *);
1136
1137 /*
1138 * The standard printing functions supported by the Java VM. (Should they
1139 * be renamed to JVM_* in the future?
1140 */
1141
1142 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1143 * respectively, with the following differences:
1144 * - The string written to str is always zero-terminated, also in case of
1145 * truncation (count is too small to hold the result string), unless count
1146 * is 0. In case of truncation count-1 characters are written and '\0'
1147 * appendend.
1148 * - If count is too small to hold the whole string, -1 is returned across
1149 * all platforms. */
1150
1151 JNIEXPORT int
1152 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1153
1154 JNIEXPORT int
1155 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1156
1157 JNIEXPORT int
1158 jio_fprintf(FILE *, const char *fmt, ...);
1159
1160 JNIEXPORT int
1161 jio_vfprintf(FILE *, const char *fmt, va_list args);
1162
1163
1164 JNIEXPORT void * JNICALL
1165 JVM_RawMonitorCreate(void);
1166
1167 JNIEXPORT void JNICALL
1168 JVM_RawMonitorDestroy(void *mon);
1169
1170 JNIEXPORT jint JNICALL
1171 JVM_RawMonitorEnter(void *mon);
1172
1173 JNIEXPORT void JNICALL
1174 JVM_RawMonitorExit(void *mon);
1175
1176 /*
1177 * java.lang.management support
1178 */
1179 JNIEXPORT void* JNICALL
1180 JVM_GetManagement(jint version);
1181
1182 /*
1183 * com.sun.tools.attach.VirtualMachine support
1184 *
1185 * Initialize the agent properties with the properties maintained in the VM.
1186 */
1187 JNIEXPORT jobject JNICALL
1188 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1189
1190 JNIEXPORT jstring JNICALL
1191 JVM_GetTemporaryDirectory(JNIEnv *env);
1192
1193 /* Generics reflection support.
1194 *
1195 * Returns information about the given class's EnclosingMethod
1196 * attribute, if present, or null if the class had no enclosing
1197 * method.
1198 *
1199 * If non-null, the returned array contains three elements. Element 0
1200 * is the java.lang.Class of which the enclosing method is a member,
1201 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1202 * method's name and descriptor, respectively.
1203 */
1204 JNIEXPORT jobjectArray JNICALL
1205 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1206
1207 /*
1208 * This structure is used by the launcher to get the default thread
1209 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1210 * version of 1.1. As it is not supported otherwise, it has been removed
1211 * from jni.h
1212 */
1213 typedef struct JDK1_1InitArgs {
1214 jint version;
1215
1216 char **properties;
1217 jint checkSource;
1218 jint nativeStackSize;
1219 jint javaStackSize;
1220 jint minHeapSize;
1221 jint maxHeapSize;
1222 jint verifyMode;
1223 char *classpath;
1224
1225 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1226 void (JNICALL *exit)(jint code);
1227 void (JNICALL *abort)(void);
1228
1229 jint enableClassGC;
1230 jint enableVerboseGC;
1231 jint disableAsyncGC;
1232 jint verbose;
1233 jboolean debugging;
1234 jint debugPort;
1235 } JDK1_1InitArgs;
1236
1237
1238 #ifdef __cplusplus
1239 } /* extern "C" */
1240
1241 #endif /* __cplusplus */
1242
1243 #endif /* !_JAVASOFT_JVM_H_ */