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 JNIEXPORT jlong JNICALL
180 JVM_GetRandomSeedForCDSDump();
181
182 /*
183 * java.lang.Throwable
184 */
185 JNIEXPORT void JNICALL
186 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
187
188 /*
189 * java.lang.StackTraceElement
190 */
191 JNIEXPORT void JNICALL
192 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
193
194 JNIEXPORT void JNICALL
195 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
196
197 /*
198 * java.lang.NullPointerException
199 */
200
201 JNIEXPORT jstring JNICALL
202 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
203
204 /*
205 * java.lang.StackWalker
206 */
207 enum {
208 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
209 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
210 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
211 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
212 };
213
214 JNIEXPORT jobject JNICALL
215 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
216 jint skip_frames, jint frame_count, jint start_index,
217 jobjectArray frames);
218
219 JNIEXPORT jint JNICALL
220 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
221 jint frame_count, jint start_index,
222 jobjectArray frames);
223
224 /*
225 * java.lang.Thread
226 */
227 JNIEXPORT void JNICALL
228 JVM_StartThread(JNIEnv *env, jobject thread);
229
230 JNIEXPORT void JNICALL
231 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
232
233 JNIEXPORT jboolean JNICALL
234 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
235
236 JNIEXPORT void JNICALL
237 JVM_SuspendThread(JNIEnv *env, jobject thread);
238
239 JNIEXPORT void JNICALL
240 JVM_ResumeThread(JNIEnv *env, jobject thread);
241
242 JNIEXPORT void JNICALL
243 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
244
245 JNIEXPORT void JNICALL
246 JVM_Yield(JNIEnv *env, jclass threadClass);
247
248 JNIEXPORT void JNICALL
249 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
250
251 JNIEXPORT jobject JNICALL
252 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
253
254 JNIEXPORT void JNICALL
255 JVM_Interrupt(JNIEnv *env, jobject thread);
256
257 JNIEXPORT jboolean JNICALL
258 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
259
260 JNIEXPORT void JNICALL
261 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
262
263 JNIEXPORT jobjectArray JNICALL
264 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
265
266 JNIEXPORT void JNICALL
267 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
268
269 /* getStackTrace() and getAllStackTraces() method */
270 JNIEXPORT jobjectArray JNICALL
271 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
272
273 /*
274 * java.lang.SecurityManager
275 */
276 JNIEXPORT jobjectArray JNICALL
277 JVM_GetClassContext(JNIEnv *env);
278
279 /*
280 * java.lang.Package
281 */
282 JNIEXPORT jstring JNICALL
283 JVM_GetSystemPackage(JNIEnv *env, jstring name);
284
285 JNIEXPORT jobjectArray JNICALL
286 JVM_GetSystemPackages(JNIEnv *env);
287
288 /*
289 * java.lang.ref.Reference
290 */
291 JNIEXPORT jobject JNICALL
292 JVM_GetAndClearReferencePendingList(JNIEnv *env);
293
294 JNIEXPORT jboolean JNICALL
295 JVM_HasReferencePendingList(JNIEnv *env);
296
297 JNIEXPORT void JNICALL
298 JVM_WaitForReferencePendingList(JNIEnv *env);
299
300 /*
301 * java.io.ObjectInputStream
302 */
303 JNIEXPORT jobject JNICALL
304 JVM_LatestUserDefinedLoader(JNIEnv *env);
305
306 /*
307 * java.lang.reflect.Array
308 */
309 JNIEXPORT jint JNICALL
310 JVM_GetArrayLength(JNIEnv *env, jobject arr);
311
312 JNIEXPORT jobject JNICALL
313 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
314
315 JNIEXPORT jvalue JNICALL
316 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
317
318 JNIEXPORT void JNICALL
319 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
320
321 JNIEXPORT void JNICALL
322 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
323 unsigned char vCode);
324
325 JNIEXPORT jobject JNICALL
326 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
327
328 JNIEXPORT jobject JNICALL
329 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
330
331
332 /*
333 * Returns the immediate caller class of the native method invoking
334 * JVM_GetCallerClass. The Method.invoke and other frames due to
335 * reflection machinery are skipped.
336 *
337 * The caller is expected to be marked with
338 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
339 * error if it is not marked properly.
340 */
341 JNIEXPORT jclass JNICALL
342 JVM_GetCallerClass(JNIEnv *env);
343
344
345 /*
346 * Find primitive classes
347 * utf: class name
348 */
349 JNIEXPORT jclass JNICALL
350 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
351
352
353 /*
354 * Find a class from a boot class loader. Returns NULL if class not found.
355 */
356 JNIEXPORT jclass JNICALL
357 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
358
359 /*
360 * Find a class from a given class loader. Throws ClassNotFoundException.
361 * name: name of class
362 * init: whether initialization is done
363 * loader: class loader to look up the class. This may not be the same as the caller's
364 * class loader.
365 * caller: initiating class. The initiating class may be null when a security
366 * manager is not installed.
367 */
368 JNIEXPORT jclass JNICALL
369 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
370 jobject loader, jclass caller);
371
372 /*
373 * Find a class from a given class.
374 */
375 JNIEXPORT jclass JNICALL
376 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
377 jclass from);
378
379 /* Find a loaded class cached by the VM */
380 JNIEXPORT jclass JNICALL
381 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
382
383 /* Define a class */
384 JNIEXPORT jclass JNICALL
385 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
386 jsize len, jobject pd);
387
388 /* Define a class with a source (added in JDK1.5) */
389 JNIEXPORT jclass JNICALL
390 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
391 const jbyte *buf, jsize len, jobject pd,
392 const char *source);
393
394 /*
395 * Define a class with the specified lookup class.
396 * lookup: Lookup class
397 * name: the name of the class
398 * buf: class bytes
399 * len: length of class bytes
400 * pd: protection domain
401 * init: initialize the class
402 * flags: properties of the class
403 * classData: private static pre-initialized field; may be null
404 */
405 JNIEXPORT jclass JNICALL
406 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
407 jsize len, jobject pd, jboolean init, int flags, jobject classData);
408
409 /*
410 * Module support funcions
411 */
412
413 /*
414 * Define a module with the specified packages and bind the module to the
415 * given class loader.
416 * module: module to define
417 * is_open: specifies if module is open (currently ignored)
418 * version: the module version
419 * location: the module location
420 * packages: array of packages in the module
421 */
422 JNIEXPORT void JNICALL
423 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
424 jstring location, jobjectArray packages);
425
426 /*
427 * Set the boot loader's unnamed module.
428 * module: boot loader's unnamed module
429 */
430 JNIEXPORT void JNICALL
431 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
432
433 /*
434 * Do a qualified export of a package.
435 * from_module: module containing the package to export
436 * package: name of the package to export
437 * to_module: module to export the package to
438 */
439 JNIEXPORT void JNICALL
440 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
441
442 /*
443 * Do an export of a package to all unnamed modules.
444 * from_module: module containing the package to export
445 * package: name of the package to export to all unnamed modules
446 */
447 JNIEXPORT void JNICALL
448 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
449
450 /*
451 * Do an unqualified export of a package.
452 * from_module: module containing the package to export
453 * package: name of the package to export
454 */
455 JNIEXPORT void JNICALL
456 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
457
458 /*
459 * Add a module to the list of modules that a given module can read.
460 * from_module: module requesting read access
461 * source_module: module that from_module wants to read
462 */
463 JNIEXPORT void JNICALL
464 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
465
466 /*
467 * Reflection support functions
468 */
469
470 JNIEXPORT jstring JNICALL
471 JVM_InitClassName(JNIEnv *env, jclass cls);
472
473 JNIEXPORT jobjectArray JNICALL
474 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
475
476 JNIEXPORT jboolean JNICALL
477 JVM_IsInterface(JNIEnv *env, jclass cls);
478
479 JNIEXPORT jobjectArray JNICALL
480 JVM_GetClassSigners(JNIEnv *env, jclass cls);
481
482 JNIEXPORT void JNICALL
483 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
484
485 JNIEXPORT jobject JNICALL
486 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
487
488 JNIEXPORT jboolean JNICALL
489 JVM_IsArrayClass(JNIEnv *env, jclass cls);
490
491 JNIEXPORT jboolean JNICALL
492 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
493
494 JNIEXPORT jboolean JNICALL
495 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
496
497 JNIEXPORT jint JNICALL
498 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
499
500 JNIEXPORT jobjectArray JNICALL
501 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
502
503 JNIEXPORT jclass JNICALL
504 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
505
506 JNIEXPORT jstring JNICALL
507 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
508
509 /* Generics support (JDK 1.5) */
510 JNIEXPORT jstring JNICALL
511 JVM_GetClassSignature(JNIEnv *env, jclass cls);
512
513 /* Annotations support (JDK 1.5) */
514 JNIEXPORT jbyteArray JNICALL
515 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
516
517 /* Type use annotations support (JDK 1.8) */
518
519 JNIEXPORT jbyteArray JNICALL
520 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
521
522 JNIEXPORT jbyteArray JNICALL
523 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
524
525 JNIEXPORT jbyteArray JNICALL
526 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
527
528 /*
529 * New (JDK 1.4) reflection implementation
530 */
531
532 JNIEXPORT jobjectArray JNICALL
533 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
534
535 JNIEXPORT jobjectArray JNICALL
536 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
537
538 JNIEXPORT jobjectArray JNICALL
539 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
540
541
542 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
543 This returns the access flags for the class as specified in the
544 class file rather than searching the InnerClasses attribute (if
545 present) to find the source-level access flags. Only the values of
546 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
547 valid. */
548 JNIEXPORT jint JNICALL
549 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
550
551 /* Nestmates - since JDK 11 */
552
553 JNIEXPORT jboolean JNICALL
554 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
555
556 JNIEXPORT jclass JNICALL
557 JVM_GetNestHost(JNIEnv *env, jclass current);
558
559 JNIEXPORT jobjectArray JNICALL
560 JVM_GetNestMembers(JNIEnv *env, jclass current);
561
562 /* Records - since JDK 14 */
563
564 JNIEXPORT jboolean JNICALL
565 JVM_IsRecord(JNIEnv *env, jclass cls);
566
567 JNIEXPORT jobjectArray JNICALL
568 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
569
570 /* Sealed types - since JDK 15 */
571
572 JNIEXPORT jobjectArray JNICALL
573 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current);
574
575 /* The following two reflection routines are still needed due to startup time issues */
576 /*
577 * java.lang.reflect.Method
578 */
579 JNIEXPORT jobject JNICALL
580 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
581
582 /*
583 * java.lang.reflect.Constructor
584 */
585 JNIEXPORT jobject JNICALL
586 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
587
588 /*
589 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
590 */
591
592 JNIEXPORT jobject JNICALL
593 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
594
595 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
596 (JNIEnv *env, jobject unused, jobject jcpool);
597
598 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
599 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
600
601 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
602 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
603
604 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
605 (JNIEnv *env, jobject obj, jobject unused, jint index);
606
607 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
608 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
609
610 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
611 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
612
613 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
614 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
615
616 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
617 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
618
619 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
620 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
621
622 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
623 (JNIEnv *env, jobject obj, jobject unused, jint index);
624
625 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
626 (JNIEnv *env, jobject obj, jobject unused, jint index);
627
628 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
629 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
630
631 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
632 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
633
634 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
635 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
636
637 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
638 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
639
640 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
641 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
642
643 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
644 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
645
646 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
647 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
648
649 /*
650 * Parameter reflection
651 */
652
653 JNIEXPORT jobjectArray JNICALL
654 JVM_GetMethodParameters(JNIEnv *env, jobject method);
655
656 /*
657 * java.security.*
658 */
659
660 JNIEXPORT jobject JNICALL
661 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
662
663 /*
664 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
665 * get the value will see a materialized value and not a scalar-replaced
666 * null value.
667 */
668 #define JVM_EnsureMaterializedForStackWalk(env, value) \
669 do {} while(0) // Nothing to do. The fact that the value escaped
670 // through a native method is enough.
671
672 JNIEXPORT jobject JNICALL
673 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
674
675 /*
676 * Signal support, used to implement the shutdown sequence. Every VM must
677 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
678 * (^C) and the latter for external termination (kill, system shutdown, etc.).
679 * Other platform-dependent signal values may also be supported.
680 */
681
682 JNIEXPORT void * JNICALL
683 JVM_RegisterSignal(jint sig, void *handler);
684
685 JNIEXPORT jboolean JNICALL
686 JVM_RaiseSignal(jint sig);
687
688 JNIEXPORT jint JNICALL
689 JVM_FindSignal(const char *name);
690
691 /*
692 * Retrieve the assertion directives for the specified class.
693 */
694 JNIEXPORT jboolean JNICALL
695 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
696
697 /*
698 * Retrieve the assertion directives from the VM.
699 */
700 JNIEXPORT jobject JNICALL
701 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
702
703 /*
704 * java.util.concurrent.atomic.AtomicLong
705 */
706 JNIEXPORT jboolean JNICALL
707 JVM_SupportsCX8(void);
708
709 /*
710 * com.sun.dtrace.jsdt support
711 */
712
713 #define JVM_TRACING_DTRACE_VERSION 1
714
715 /*
716 * Structure to pass one probe description to JVM
717 */
718 typedef struct {
719 jmethodID method;
720 jstring function;
721 jstring name;
722 void* reserved[4]; // for future use
723 } JVM_DTraceProbe;
724
725 /**
726 * Encapsulates the stability ratings for a DTrace provider field
727 */
728 typedef struct {
729 jint nameStability;
730 jint dataStability;
731 jint dependencyClass;
732 } JVM_DTraceInterfaceAttributes;
733
734 /*
735 * Structure to pass one provider description to JVM
736 */
737 typedef struct {
738 jstring name;
739 JVM_DTraceProbe* probes;
740 jint probe_count;
741 JVM_DTraceInterfaceAttributes providerAttributes;
742 JVM_DTraceInterfaceAttributes moduleAttributes;
743 JVM_DTraceInterfaceAttributes functionAttributes;
744 JVM_DTraceInterfaceAttributes nameAttributes;
745 JVM_DTraceInterfaceAttributes argsAttributes;
746 void* reserved[4]; // for future use
747 } JVM_DTraceProvider;
748
749 /*
750 * Get the version number the JVM was built with
751 */
752 JNIEXPORT jint JNICALL
753 JVM_DTraceGetVersion(JNIEnv* env);
754
755 /*
756 * Register new probe with given signature, return global handle
757 *
758 * The version passed in is the version that the library code was
759 * built with.
760 */
761 JNIEXPORT jlong JNICALL
762 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
763 jint providers_count, JVM_DTraceProvider* providers);
764
765 /*
766 * Check JSDT probe
767 */
768 JNIEXPORT jboolean JNICALL
769 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
770
771 /*
772 * Destroy custom DOF
773 */
774 JNIEXPORT void JNICALL
775 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
776
777 /*
778 * Check to see if DTrace is supported by OS
779 */
780 JNIEXPORT jboolean JNICALL
781 JVM_DTraceIsSupported(JNIEnv* env);
782
783 /*************************************************************************
784 PART 2: Support for the Verifier and Class File Format Checker
785 ************************************************************************/
786 /*
787 * Return the class name in UTF format. The result is valid
788 * until JVM_ReleaseUTf is called.
789 *
790 * The caller must treat the string as a constant and not modify it
791 * in any way.
792 */
793 JNIEXPORT const char * JNICALL
794 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
795
796 /*
797 * Returns the constant pool types in the buffer provided by "types."
798 */
799 JNIEXPORT void JNICALL
800 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
801
802 /*
803 * Returns the number of Constant Pool entries.
804 */
805 JNIEXPORT jint JNICALL
806 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
807
808 /*
809 * Returns the number of *declared* fields or methods.
810 */
811 JNIEXPORT jint JNICALL
812 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
813
814 JNIEXPORT jint JNICALL
815 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
816
817 /*
818 * Returns the CP indexes of exceptions raised by a given method.
819 * Places the result in the given buffer.
820 *
821 * The method is identified by method_index.
822 */
823 JNIEXPORT void JNICALL
824 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
825 unsigned short *exceptions);
826 /*
827 * Returns the number of exceptions raised by a given method.
828 * The method is identified by method_index.
829 */
830 JNIEXPORT jint JNICALL
831 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
832
833 /*
834 * Returns the byte code sequence of a given method.
835 * Places the result in the given buffer.
836 *
837 * The method is identified by method_index.
838 */
839 JNIEXPORT void JNICALL
840 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
841 unsigned char *code);
842
843 /*
844 * Returns the length of the byte code sequence of a given method.
845 * The method is identified by method_index.
846 */
847 JNIEXPORT jint JNICALL
848 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
849
850 /*
851 * A structure used to a capture exception table entry in a Java method.
852 */
853 typedef struct {
854 jint start_pc;
855 jint end_pc;
856 jint handler_pc;
857 jint catchType;
858 } JVM_ExceptionTableEntryType;
859
860 /*
861 * Returns the exception table entry at entry_index of a given method.
862 * Places the result in the given buffer.
863 *
864 * The method is identified by method_index.
865 */
866 JNIEXPORT void JNICALL
867 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
868 jint entry_index,
869 JVM_ExceptionTableEntryType *entry);
870
871 /*
872 * Returns the length of the exception table of a given method.
873 * The method is identified by method_index.
874 */
875 JNIEXPORT jint JNICALL
876 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
877
878 /*
879 * Returns the modifiers of a given field.
880 * The field is identified by field_index.
881 */
882 JNIEXPORT jint JNICALL
883 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
884
885 /*
886 * Returns the modifiers of a given method.
887 * The method is identified by method_index.
888 */
889 JNIEXPORT jint JNICALL
890 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
891
892 /*
893 * Returns the number of local variables of a given method.
894 * The method is identified by method_index.
895 */
896 JNIEXPORT jint JNICALL
897 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
898
899 /*
900 * Returns the number of arguments (including this pointer) of a given method.
901 * The method is identified by method_index.
902 */
903 JNIEXPORT jint JNICALL
904 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
905
906 /*
907 * Returns the maximum amount of stack (in words) used by a given method.
908 * The method is identified by method_index.
909 */
910 JNIEXPORT jint JNICALL
911 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
912
913 /*
914 * Is a given method a constructor.
915 * The method is identified by method_index.
916 */
917 JNIEXPORT jboolean JNICALL
918 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
919
920 /*
921 * Is the given method generated by the VM.
922 * The method is identified by method_index.
923 */
924 JNIEXPORT jboolean JNICALL
925 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
926
927 /*
928 * Returns the name of a given method in UTF format.
929 * The result remains valid until JVM_ReleaseUTF is called.
930 *
931 * The caller must treat the string as a constant and not modify it
932 * in any way.
933 */
934 JNIEXPORT const char * JNICALL
935 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
936
937 /*
938 * Returns the signature of a given method in UTF format.
939 * The result remains valid until JVM_ReleaseUTF is called.
940 *
941 * The caller must treat the string as a constant and not modify it
942 * in any way.
943 */
944 JNIEXPORT const char * JNICALL
945 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
946
947 /*
948 * Returns the name of the field referred to at a given constant pool
949 * index.
950 *
951 * The result is in UTF format and remains valid until JVM_ReleaseUTF
952 * is called.
953 *
954 * The caller must treat the string as a constant and not modify it
955 * in any way.
956 */
957 JNIEXPORT const char * JNICALL
958 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
959
960 /*
961 * Returns the name of the method referred to at a given constant pool
962 * index.
963 *
964 * The result is in UTF format and remains valid until JVM_ReleaseUTF
965 * is called.
966 *
967 * The caller must treat the string as a constant and not modify it
968 * in any way.
969 */
970 JNIEXPORT const char * JNICALL
971 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
972
973 /*
974 * Returns the signature of the method referred to at a given constant pool
975 * index.
976 *
977 * The result is in UTF format and remains valid until JVM_ReleaseUTF
978 * is called.
979 *
980 * The caller must treat the string as a constant and not modify it
981 * in any way.
982 */
983 JNIEXPORT const char * JNICALL
984 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
985
986 /*
987 * Returns the signature of the field referred to at a given constant pool
988 * index.
989 *
990 * The result is in UTF format and remains valid until JVM_ReleaseUTF
991 * is called.
992 *
993 * The caller must treat the string as a constant and not modify it
994 * in any way.
995 */
996 JNIEXPORT const char * JNICALL
997 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
998
999 /*
1000 * Returns the class name referred to at a given constant pool index.
1001 *
1002 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1003 * is called.
1004 *
1005 * The caller must treat the string as a constant and not modify it
1006 * in any way.
1007 */
1008 JNIEXPORT const char * JNICALL
1009 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1010
1011 /*
1012 * Returns the class name referred to at a given constant pool index.
1013 *
1014 * The constant pool entry must refer to a CONSTANT_Fieldref.
1015 *
1016 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1017 * is called.
1018 *
1019 * The caller must treat the string as a constant and not modify it
1020 * in any way.
1021 */
1022 JNIEXPORT const char * JNICALL
1023 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1024
1025 /*
1026 * Returns the class name referred to at a given constant pool index.
1027 *
1028 * The constant pool entry must refer to CONSTANT_Methodref or
1029 * CONSTANT_InterfaceMethodref.
1030 *
1031 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1032 * is called.
1033 *
1034 * The caller must treat the string as a constant and not modify it
1035 * in any way.
1036 */
1037 JNIEXPORT const char * JNICALL
1038 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1039
1040 /*
1041 * Returns the modifiers of a field in calledClass. The field is
1042 * referred to in class cb at constant pool entry index.
1043 *
1044 * The caller must treat the string as a constant and not modify it
1045 * in any way.
1046 *
1047 * Returns -1 if the field does not exist in calledClass.
1048 */
1049 JNIEXPORT jint JNICALL
1050 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1051
1052 /*
1053 * Returns the modifiers of a method in calledClass. The method is
1054 * referred to in class cb at constant pool entry index.
1055 *
1056 * Returns -1 if the method does not exist in calledClass.
1057 */
1058 JNIEXPORT jint JNICALL
1059 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1060
1061 /*
1062 * Releases the UTF string obtained from the VM.
1063 */
1064 JNIEXPORT void JNICALL
1065 JVM_ReleaseUTF(const char *utf);
1066
1067 /*
1068 * Compare if two classes are in the same package.
1069 */
1070 JNIEXPORT jboolean JNICALL
1071 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1072
1073 /* Get classfile constants */
1074 #include "classfile_constants.h"
1075
1076 /*
1077 * Support for a VM-independent class format checker.
1078 */
1079 typedef struct {
1080 unsigned long code; /* byte code */
1081 unsigned long excs; /* exceptions */
1082 unsigned long etab; /* catch table */
1083 unsigned long lnum; /* line number */
1084 unsigned long lvar; /* local vars */
1085 } method_size_info;
1086
1087 typedef struct {
1088 unsigned int constants; /* constant pool */
1089 unsigned int fields;
1090 unsigned int methods;
1091 unsigned int interfaces;
1092 unsigned int fields2; /* number of static 2-word fields */
1093 unsigned int innerclasses; /* # of records in InnerClasses attr */
1094
1095 method_size_info clinit; /* memory used in clinit */
1096 method_size_info main; /* used everywhere else */
1097 } class_size_info;
1098
1099 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1100 JVM_ACC_FINAL | \
1101 JVM_ACC_SUPER | \
1102 JVM_ACC_INTERFACE | \
1103 JVM_ACC_ABSTRACT | \
1104 JVM_ACC_ANNOTATION | \
1105 JVM_ACC_ENUM | \
1106 JVM_ACC_SYNTHETIC)
1107
1108 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1109 JVM_ACC_PRIVATE | \
1110 JVM_ACC_PROTECTED | \
1111 JVM_ACC_STATIC | \
1112 JVM_ACC_FINAL | \
1113 JVM_ACC_VOLATILE | \
1114 JVM_ACC_TRANSIENT | \
1115 JVM_ACC_ENUM | \
1116 JVM_ACC_SYNTHETIC)
1117
1118 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1119 JVM_ACC_PRIVATE | \
1120 JVM_ACC_PROTECTED | \
1121 JVM_ACC_STATIC | \
1122 JVM_ACC_FINAL | \
1123 JVM_ACC_SYNCHRONIZED | \
1124 JVM_ACC_BRIDGE | \
1125 JVM_ACC_VARARGS | \
1126 JVM_ACC_NATIVE | \
1127 JVM_ACC_ABSTRACT | \
1128 JVM_ACC_STRICT | \
1129 JVM_ACC_SYNTHETIC)
1130
1131
1132 /*************************************************************************
1133 PART 3: I/O and Network Support
1134 ************************************************************************/
1135
1136 /*
1137 * Convert a pathname into native format. This function does syntactic
1138 * cleanup, such as removing redundant separator characters. It modifies
1139 * the given pathname string in place.
1140 */
1141 JNIEXPORT char * JNICALL
1142 JVM_NativePath(char *);
1143
1144 /*
1145 * The standard printing functions supported by the Java VM. (Should they
1146 * be renamed to JVM_* in the future?
1147 */
1148
1149 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1150 * respectively, with the following differences:
1151 * - The string written to str is always zero-terminated, also in case of
1152 * truncation (count is too small to hold the result string), unless count
1153 * is 0. In case of truncation count-1 characters are written and '\0'
1154 * appendend.
1155 * - If count is too small to hold the whole string, -1 is returned across
1156 * all platforms. */
1157
1158 JNIEXPORT int
1159 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1160
1161 JNIEXPORT int
1162 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1163
1164 JNIEXPORT int
1165 jio_fprintf(FILE *, const char *fmt, ...);
1166
1167 JNIEXPORT int
1168 jio_vfprintf(FILE *, const char *fmt, va_list args);
1169
1170
1171 JNIEXPORT void * JNICALL
1172 JVM_RawMonitorCreate(void);
1173
1174 JNIEXPORT void JNICALL
1175 JVM_RawMonitorDestroy(void *mon);
1176
1177 JNIEXPORT jint JNICALL
1178 JVM_RawMonitorEnter(void *mon);
1179
1180 JNIEXPORT void JNICALL
1181 JVM_RawMonitorExit(void *mon);
1182
1183 /*
1184 * java.lang.management support
1185 */
1186 JNIEXPORT void* JNICALL
1187 JVM_GetManagement(jint version);
1188
1189 /*
1190 * com.sun.tools.attach.VirtualMachine support
1191 *
1192 * Initialize the agent properties with the properties maintained in the VM.
1193 */
1194 JNIEXPORT jobject JNICALL
1195 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1196
1197 JNIEXPORT jstring JNICALL
1198 JVM_GetTemporaryDirectory(JNIEnv *env);
1199
1200 /* Generics reflection support.
1201 *
1202 * Returns information about the given class's EnclosingMethod
1203 * attribute, if present, or null if the class had no enclosing
1204 * method.
1205 *
1206 * If non-null, the returned array contains three elements. Element 0
1207 * is the java.lang.Class of which the enclosing method is a member,
1208 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1209 * method's name and descriptor, respectively.
1210 */
1211 JNIEXPORT jobjectArray JNICALL
1212 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1213
1214 /*
1215 * This structure is used by the launcher to get the default thread
1216 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1217 * version of 1.1. As it is not supported otherwise, it has been removed
1218 * from jni.h
1219 */
1220 typedef struct JDK1_1InitArgs {
1221 jint version;
1222
1223 char **properties;
1224 jint checkSource;
1225 jint nativeStackSize;
1226 jint javaStackSize;
1227 jint minHeapSize;
1228 jint maxHeapSize;
1229 jint verifyMode;
1230 char *classpath;
1231
1232 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1233 void (JNICALL *exit)(jint code);
1234 void (JNICALL *abort)(void);
1235
1236 jint enableClassGC;
1237 jint enableVerboseGC;
1238 jint disableAsyncGC;
1239 jint verbose;
1240 jboolean debugging;
1241 jint debugPort;
1242 } JDK1_1InitArgs;
1243
1244
1245 #ifdef __cplusplus
1246 } /* extern "C" */
1247
1248 #endif /* __cplusplus */
1249
1250 #endif /* !_JAVASOFT_JVM_H_ */