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