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 void JNICALL
180 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller,
181 jstring invokedName,
182 jobject invokedType,
183 jobject methodType,
184 jobject implMethodMember,
185 jobject instantiatedMethodType,
186 jclass lambdaProxyClass);
187
188 JNIEXPORT jclass JNICALL
189 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller,
190 jstring invokedName,
191 jobject invokedType,
192 jobject methodType,
193 jobject implMethodMember,
194 jobject instantiatedMethodType,
195 jboolean initialize);
196
197 JNIEXPORT jboolean JNICALL
198 JVM_IsCDSDumpingEnabled(JNIEnv* env);
199
200 JNIEXPORT jboolean JNICALL
201 JVM_IsCDSSharingEnabled(JNIEnv* env);
202
203 JNIEXPORT jlong JNICALL
204 JVM_GetRandomSeedForCDSDump();
205
206 /*
207 * java.lang.Throwable
208 */
209 JNIEXPORT void JNICALL
210 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
211
212 /*
213 * java.lang.StackTraceElement
214 */
215 JNIEXPORT void JNICALL
216 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
217
218 JNIEXPORT void JNICALL
219 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
220
221 /*
222 * java.lang.NullPointerException
223 */
224
225 JNIEXPORT jstring JNICALL
226 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
227
228 /*
229 * java.lang.StackWalker
230 */
231 enum {
232 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
233 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
234 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
235 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
236 };
237
238 JNIEXPORT jobject JNICALL
239 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
240 jint skip_frames, jint frame_count, jint start_index,
241 jobjectArray frames);
242
243 JNIEXPORT jint JNICALL
244 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
245 jint frame_count, jint start_index,
246 jobjectArray frames);
247
248 /*
249 * java.lang.Thread
250 */
251 JNIEXPORT void JNICALL
252 JVM_StartThread(JNIEnv *env, jobject thread);
253
254 JNIEXPORT void JNICALL
255 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
256
257 JNIEXPORT jboolean JNICALL
258 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
259
260 JNIEXPORT void JNICALL
261 JVM_SuspendThread(JNIEnv *env, jobject thread);
262
263 JNIEXPORT void JNICALL
264 JVM_ResumeThread(JNIEnv *env, jobject thread);
265
266 JNIEXPORT void JNICALL
267 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
268
269 JNIEXPORT void JNICALL
270 JVM_Yield(JNIEnv *env, jclass threadClass);
271
272 JNIEXPORT void JNICALL
273 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
274
275 JNIEXPORT jobject JNICALL
276 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
277
278 JNIEXPORT void JNICALL
279 JVM_Interrupt(JNIEnv *env, jobject thread);
280
281 JNIEXPORT jboolean JNICALL
282 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
283
284 JNIEXPORT void JNICALL
285 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
286
287 JNIEXPORT jobjectArray JNICALL
288 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
289
290 JNIEXPORT void JNICALL
291 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
292
293 /* getStackTrace() and getAllStackTraces() method */
294 JNIEXPORT jobjectArray JNICALL
295 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
296
297 /*
298 * java.lang.SecurityManager
299 */
300 JNIEXPORT jobjectArray JNICALL
301 JVM_GetClassContext(JNIEnv *env);
302
303 /*
304 * java.lang.Package
305 */
306 JNIEXPORT jstring JNICALL
307 JVM_GetSystemPackage(JNIEnv *env, jstring name);
308
309 JNIEXPORT jobjectArray JNICALL
310 JVM_GetSystemPackages(JNIEnv *env);
311
312 /*
313 * java.lang.ref.Reference
314 */
315 JNIEXPORT jobject JNICALL
316 JVM_GetAndClearReferencePendingList(JNIEnv *env);
317
318 JNIEXPORT jboolean JNICALL
319 JVM_HasReferencePendingList(JNIEnv *env);
320
321 JNIEXPORT void JNICALL
322 JVM_WaitForReferencePendingList(JNIEnv *env);
323
324 /*
325 * java.io.ObjectInputStream
326 */
327 JNIEXPORT jobject JNICALL
328 JVM_LatestUserDefinedLoader(JNIEnv *env);
329
330 /*
331 * java.lang.reflect.Array
332 */
333 JNIEXPORT jint JNICALL
334 JVM_GetArrayLength(JNIEnv *env, jobject arr);
335
336 JNIEXPORT jobject JNICALL
337 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
338
339 JNIEXPORT jvalue JNICALL
340 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
341
342 JNIEXPORT void JNICALL
343 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
344
345 JNIEXPORT void JNICALL
346 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
347 unsigned char vCode);
348
349 JNIEXPORT jobject JNICALL
350 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
351
352 JNIEXPORT jobject JNICALL
353 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
354
355
356 /*
357 * Returns the immediate caller class of the native method invoking
358 * JVM_GetCallerClass. The Method.invoke and other frames due to
359 * reflection machinery are skipped.
360 *
361 * The caller is expected to be marked with
362 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
363 * error if it is not marked properly.
364 */
365 JNIEXPORT jclass JNICALL
366 JVM_GetCallerClass(JNIEnv *env);
367
368
369 /*
370 * Find primitive classes
371 * utf: class name
372 */
373 JNIEXPORT jclass JNICALL
374 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
375
376
377 /*
378 * Find a class from a boot class loader. Returns NULL if class not found.
379 */
380 JNIEXPORT jclass JNICALL
381 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
382
383 /*
384 * Find a class from a given class loader. Throws ClassNotFoundException.
385 * name: name of class
386 * init: whether initialization is done
387 * loader: class loader to look up the class. This may not be the same as the caller's
388 * class loader.
389 * caller: initiating class. The initiating class may be null when a security
390 * manager is not installed.
391 */
392 JNIEXPORT jclass JNICALL
393 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
394 jobject loader, jclass caller);
395
396 /*
397 * Find a class from a given class.
398 */
399 JNIEXPORT jclass JNICALL
400 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
401 jclass from);
402
403 /* Find a loaded class cached by the VM */
404 JNIEXPORT jclass JNICALL
405 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
406
407 /* Define a class */
408 JNIEXPORT jclass JNICALL
409 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
410 jsize len, jobject pd);
411
412 /* Define a class with a source (added in JDK1.5) */
413 JNIEXPORT jclass JNICALL
414 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
415 const jbyte *buf, jsize len, jobject pd,
416 const char *source);
417
418 /*
419 * Define a class with the specified lookup class.
420 * lookup: Lookup class
421 * name: the name of the class
422 * buf: class bytes
423 * len: length of class bytes
424 * pd: protection domain
425 * init: initialize the class
426 * flags: properties of the class
427 * classData: private static pre-initialized field; may be null
428 */
429 JNIEXPORT jclass JNICALL
430 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
431 jsize len, jobject pd, jboolean init, int flags, jobject classData);
432
433 /*
434 * Module support funcions
435 */
436
437 /*
438 * Define a module with the specified packages and bind the module to the
439 * given class loader.
440 * module: module to define
441 * is_open: specifies if module is open (currently ignored)
442 * version: the module version
443 * location: the module location
444 * packages: array of packages in the module
445 */
446 JNIEXPORT void JNICALL
447 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
448 jstring location, jobjectArray packages);
449
450 /*
451 * Set the boot loader's unnamed module.
452 * module: boot loader's unnamed module
453 */
454 JNIEXPORT void JNICALL
455 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
456
457 /*
458 * Do a qualified export of a package.
459 * from_module: module containing the package to export
460 * package: name of the package to export
461 * to_module: module to export the package to
462 */
463 JNIEXPORT void JNICALL
464 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
465
466 /*
467 * Do an export of a package to all unnamed modules.
468 * from_module: module containing the package to export
469 * package: name of the package to export to all unnamed modules
470 */
471 JNIEXPORT void JNICALL
472 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
473
474 /*
475 * Do an unqualified export of a package.
476 * from_module: module containing the package to export
477 * package: name of the package to export
478 */
479 JNIEXPORT void JNICALL
480 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
481
482 /*
483 * Add a module to the list of modules that a given module can read.
484 * from_module: module requesting read access
485 * source_module: module that from_module wants to read
486 */
487 JNIEXPORT void JNICALL
488 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
489
490 /*
491 * Reflection support functions
492 */
493
494 JNIEXPORT jstring JNICALL
495 JVM_InitClassName(JNIEnv *env, jclass cls);
496
497 JNIEXPORT jobjectArray JNICALL
498 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
499
500 JNIEXPORT jboolean JNICALL
501 JVM_IsInterface(JNIEnv *env, jclass cls);
502
503 JNIEXPORT jobjectArray JNICALL
504 JVM_GetClassSigners(JNIEnv *env, jclass cls);
505
506 JNIEXPORT void JNICALL
507 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
508
509 JNIEXPORT jobject JNICALL
510 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
511
512 JNIEXPORT jboolean JNICALL
513 JVM_IsArrayClass(JNIEnv *env, jclass cls);
514
515 JNIEXPORT jboolean JNICALL
516 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
517
518 JNIEXPORT jboolean JNICALL
519 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
520
521 JNIEXPORT jint JNICALL
522 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
523
524 JNIEXPORT jobjectArray JNICALL
525 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
526
527 JNIEXPORT jclass JNICALL
528 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
529
530 JNIEXPORT jstring JNICALL
531 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
532
533 /* Generics support (JDK 1.5) */
534 JNIEXPORT jstring JNICALL
535 JVM_GetClassSignature(JNIEnv *env, jclass cls);
536
537 /* Annotations support (JDK 1.5) */
538 JNIEXPORT jbyteArray JNICALL
539 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
540
541 /* Type use annotations support (JDK 1.8) */
542
543 JNIEXPORT jbyteArray JNICALL
544 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
545
546 JNIEXPORT jbyteArray JNICALL
547 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
548
549 JNIEXPORT jbyteArray JNICALL
550 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
551
552 /*
553 * New (JDK 1.4) reflection implementation
554 */
555
556 JNIEXPORT jobjectArray JNICALL
557 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
558
559 JNIEXPORT jobjectArray JNICALL
560 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
561
562 JNIEXPORT jobjectArray JNICALL
563 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
564
565
566 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
567 This returns the access flags for the class as specified in the
568 class file rather than searching the InnerClasses attribute (if
569 present) to find the source-level access flags. Only the values of
570 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
571 valid. */
572 JNIEXPORT jint JNICALL
573 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
574
575 /* Nestmates - since JDK 11 */
576
577 JNIEXPORT jboolean JNICALL
578 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
579
580 JNIEXPORT jclass JNICALL
581 JVM_GetNestHost(JNIEnv *env, jclass current);
582
583 JNIEXPORT jobjectArray JNICALL
584 JVM_GetNestMembers(JNIEnv *env, jclass current);
585
586 /* Records - since JDK 14 */
587
588 JNIEXPORT jboolean JNICALL
589 JVM_IsRecord(JNIEnv *env, jclass cls);
590
591 JNIEXPORT jobjectArray JNICALL
592 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
593
594 /* Sealed types - since JDK 15 */
595
596 JNIEXPORT jobjectArray JNICALL
597 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current);
598
599 /* The following two reflection routines are still needed due to startup time issues */
600 /*
601 * java.lang.reflect.Method
602 */
603 JNIEXPORT jobject JNICALL
604 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
605
606 /*
607 * java.lang.reflect.Constructor
608 */
609 JNIEXPORT jobject JNICALL
610 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
611
612 /*
613 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
614 */
615
616 JNIEXPORT jobject JNICALL
617 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
618
619 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
620 (JNIEnv *env, jobject unused, jobject jcpool);
621
622 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
623 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
624
625 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
626 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
627
628 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
629 (JNIEnv *env, jobject obj, jobject unused, jint index);
630
631 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
632 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
633
634 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
635 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
636
637 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
638 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
639
640 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
641 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
642
643 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
644 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
645
646 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
647 (JNIEnv *env, jobject obj, jobject unused, jint index);
648
649 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
650 (JNIEnv *env, jobject obj, jobject unused, jint index);
651
652 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
653 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
654
655 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
656 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
657
658 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
659 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
660
661 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
662 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
663
664 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
665 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
666
667 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
668 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
669
670 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
671 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
672
673 /*
674 * Parameter reflection
675 */
676
677 JNIEXPORT jobjectArray JNICALL
678 JVM_GetMethodParameters(JNIEnv *env, jobject method);
679
680 /*
681 * java.security.*
682 */
683
684 JNIEXPORT jobject JNICALL
685 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
686
687 /*
688 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
689 * get the value will see a materialized value and not a scalar-replaced
690 * null value.
691 */
692 #define JVM_EnsureMaterializedForStackWalk(env, value) \
693 do {} while(0) // Nothing to do. The fact that the value escaped
694 // through a native method is enough.
695
696 JNIEXPORT jobject JNICALL
697 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
698
699 /*
700 * Signal support, used to implement the shutdown sequence. Every VM must
701 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
702 * (^C) and the latter for external termination (kill, system shutdown, etc.).
703 * Other platform-dependent signal values may also be supported.
704 */
705
706 JNIEXPORT void * JNICALL
707 JVM_RegisterSignal(jint sig, void *handler);
708
709 JNIEXPORT jboolean JNICALL
710 JVM_RaiseSignal(jint sig);
711
712 JNIEXPORT jint JNICALL
713 JVM_FindSignal(const char *name);
714
715 /*
716 * Retrieve the assertion directives for the specified class.
717 */
718 JNIEXPORT jboolean JNICALL
719 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
720
721 /*
722 * Retrieve the assertion directives from the VM.
723 */
724 JNIEXPORT jobject JNICALL
725 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
726
727 /*
728 * java.util.concurrent.atomic.AtomicLong
729 */
730 JNIEXPORT jboolean JNICALL
731 JVM_SupportsCX8(void);
732
733 /*
734 * com.sun.dtrace.jsdt support
735 */
736
737 #define JVM_TRACING_DTRACE_VERSION 1
738
739 /*
740 * Structure to pass one probe description to JVM
741 */
742 typedef struct {
743 jmethodID method;
744 jstring function;
745 jstring name;
746 void* reserved[4]; // for future use
747 } JVM_DTraceProbe;
748
749 /**
750 * Encapsulates the stability ratings for a DTrace provider field
751 */
752 typedef struct {
753 jint nameStability;
754 jint dataStability;
755 jint dependencyClass;
756 } JVM_DTraceInterfaceAttributes;
757
758 /*
759 * Structure to pass one provider description to JVM
760 */
761 typedef struct {
762 jstring name;
763 JVM_DTraceProbe* probes;
764 jint probe_count;
765 JVM_DTraceInterfaceAttributes providerAttributes;
766 JVM_DTraceInterfaceAttributes moduleAttributes;
767 JVM_DTraceInterfaceAttributes functionAttributes;
768 JVM_DTraceInterfaceAttributes nameAttributes;
769 JVM_DTraceInterfaceAttributes argsAttributes;
770 void* reserved[4]; // for future use
771 } JVM_DTraceProvider;
772
773 /*
774 * Get the version number the JVM was built with
775 */
776 JNIEXPORT jint JNICALL
777 JVM_DTraceGetVersion(JNIEnv* env);
778
779 /*
780 * Register new probe with given signature, return global handle
781 *
782 * The version passed in is the version that the library code was
783 * built with.
784 */
785 JNIEXPORT jlong JNICALL
786 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
787 jint providers_count, JVM_DTraceProvider* providers);
788
789 /*
790 * Check JSDT probe
791 */
792 JNIEXPORT jboolean JNICALL
793 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
794
795 /*
796 * Destroy custom DOF
797 */
798 JNIEXPORT void JNICALL
799 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
800
801 /*
802 * Check to see if DTrace is supported by OS
803 */
804 JNIEXPORT jboolean JNICALL
805 JVM_DTraceIsSupported(JNIEnv* env);
806
807 /*************************************************************************
808 PART 2: Support for the Verifier and Class File Format Checker
809 ************************************************************************/
810 /*
811 * Return the class name in UTF format. The result is valid
812 * until JVM_ReleaseUTf is called.
813 *
814 * The caller must treat the string as a constant and not modify it
815 * in any way.
816 */
817 JNIEXPORT const char * JNICALL
818 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
819
820 /*
821 * Returns the constant pool types in the buffer provided by "types."
822 */
823 JNIEXPORT void JNICALL
824 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
825
826 /*
827 * Returns the number of Constant Pool entries.
828 */
829 JNIEXPORT jint JNICALL
830 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
831
832 /*
833 * Returns the number of *declared* fields or methods.
834 */
835 JNIEXPORT jint JNICALL
836 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
837
838 JNIEXPORT jint JNICALL
839 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
840
841 /*
842 * Returns the CP indexes of exceptions raised by a given method.
843 * Places the result in the given buffer.
844 *
845 * The method is identified by method_index.
846 */
847 JNIEXPORT void JNICALL
848 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
849 unsigned short *exceptions);
850 /*
851 * Returns the number of exceptions raised by a given method.
852 * The method is identified by method_index.
853 */
854 JNIEXPORT jint JNICALL
855 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
856
857 /*
858 * Returns the byte code sequence of a given method.
859 * Places the result in the given buffer.
860 *
861 * The method is identified by method_index.
862 */
863 JNIEXPORT void JNICALL
864 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
865 unsigned char *code);
866
867 /*
868 * Returns the length of the byte code sequence of a given method.
869 * The method is identified by method_index.
870 */
871 JNIEXPORT jint JNICALL
872 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
873
874 /*
875 * A structure used to a capture exception table entry in a Java method.
876 */
877 typedef struct {
878 jint start_pc;
879 jint end_pc;
880 jint handler_pc;
881 jint catchType;
882 } JVM_ExceptionTableEntryType;
883
884 /*
885 * Returns the exception table entry at entry_index of a given method.
886 * Places the result in the given buffer.
887 *
888 * The method is identified by method_index.
889 */
890 JNIEXPORT void JNICALL
891 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
892 jint entry_index,
893 JVM_ExceptionTableEntryType *entry);
894
895 /*
896 * Returns the length of the exception table of a given method.
897 * The method is identified by method_index.
898 */
899 JNIEXPORT jint JNICALL
900 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
901
902 /*
903 * Returns the modifiers of a given field.
904 * The field is identified by field_index.
905 */
906 JNIEXPORT jint JNICALL
907 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
908
909 /*
910 * Returns the modifiers of a given method.
911 * The method is identified by method_index.
912 */
913 JNIEXPORT jint JNICALL
914 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
915
916 /*
917 * Returns the number of local variables of a given method.
918 * The method is identified by method_index.
919 */
920 JNIEXPORT jint JNICALL
921 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
922
923 /*
924 * Returns the number of arguments (including this pointer) of a given method.
925 * The method is identified by method_index.
926 */
927 JNIEXPORT jint JNICALL
928 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
929
930 /*
931 * Returns the maximum amount of stack (in words) used by a given method.
932 * The method is identified by method_index.
933 */
934 JNIEXPORT jint JNICALL
935 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
936
937 /*
938 * Is a given method a constructor.
939 * The method is identified by method_index.
940 */
941 JNIEXPORT jboolean JNICALL
942 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
943
944 /*
945 * Is the given method generated by the VM.
946 * The method is identified by method_index.
947 */
948 JNIEXPORT jboolean JNICALL
949 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
950
951 /*
952 * Returns the name of a given method in UTF format.
953 * The result remains valid until JVM_ReleaseUTF is called.
954 *
955 * The caller must treat the string as a constant and not modify it
956 * in any way.
957 */
958 JNIEXPORT const char * JNICALL
959 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
960
961 /*
962 * Returns the signature of a given method in UTF format.
963 * The result remains valid until JVM_ReleaseUTF is called.
964 *
965 * The caller must treat the string as a constant and not modify it
966 * in any way.
967 */
968 JNIEXPORT const char * JNICALL
969 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
970
971 /*
972 * Returns the name of the field referred to at a given constant pool
973 * index.
974 *
975 * The result is in UTF format and remains valid until JVM_ReleaseUTF
976 * is called.
977 *
978 * The caller must treat the string as a constant and not modify it
979 * in any way.
980 */
981 JNIEXPORT const char * JNICALL
982 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
983
984 /*
985 * Returns the name of the method referred to at a given constant pool
986 * index.
987 *
988 * The result is in UTF format and remains valid until JVM_ReleaseUTF
989 * is called.
990 *
991 * The caller must treat the string as a constant and not modify it
992 * in any way.
993 */
994 JNIEXPORT const char * JNICALL
995 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
996
997 /*
998 * Returns the signature of the method referred to at a given constant pool
999 * index.
1000 *
1001 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1002 * is called.
1003 *
1004 * The caller must treat the string as a constant and not modify it
1005 * in any way.
1006 */
1007 JNIEXPORT const char * JNICALL
1008 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
1009
1010 /*
1011 * Returns the signature of the field referred to at a given constant pool
1012 * index.
1013 *
1014 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1015 * is called.
1016 *
1017 * The caller must treat the string as a constant and not modify it
1018 * in any way.
1019 */
1020 JNIEXPORT const char * JNICALL
1021 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
1022
1023 /*
1024 * Returns the class name referred to at a given constant pool index.
1025 *
1026 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1027 * is called.
1028 *
1029 * The caller must treat the string as a constant and not modify it
1030 * in any way.
1031 */
1032 JNIEXPORT const char * JNICALL
1033 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1034
1035 /*
1036 * Returns the class name referred to at a given constant pool index.
1037 *
1038 * The constant pool entry must refer to a CONSTANT_Fieldref.
1039 *
1040 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1041 * is called.
1042 *
1043 * The caller must treat the string as a constant and not modify it
1044 * in any way.
1045 */
1046 JNIEXPORT const char * JNICALL
1047 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1048
1049 /*
1050 * Returns the class name referred to at a given constant pool index.
1051 *
1052 * The constant pool entry must refer to CONSTANT_Methodref or
1053 * CONSTANT_InterfaceMethodref.
1054 *
1055 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1056 * is called.
1057 *
1058 * The caller must treat the string as a constant and not modify it
1059 * in any way.
1060 */
1061 JNIEXPORT const char * JNICALL
1062 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1063
1064 /*
1065 * Returns the modifiers of a field in calledClass. The field is
1066 * referred to in class cb at constant pool entry index.
1067 *
1068 * The caller must treat the string as a constant and not modify it
1069 * in any way.
1070 *
1071 * Returns -1 if the field does not exist in calledClass.
1072 */
1073 JNIEXPORT jint JNICALL
1074 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1075
1076 /*
1077 * Returns the modifiers of a method in calledClass. The method is
1078 * referred to in class cb at constant pool entry index.
1079 *
1080 * Returns -1 if the method does not exist in calledClass.
1081 */
1082 JNIEXPORT jint JNICALL
1083 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1084
1085 /*
1086 * Releases the UTF string obtained from the VM.
1087 */
1088 JNIEXPORT void JNICALL
1089 JVM_ReleaseUTF(const char *utf);
1090
1091 /*
1092 * Compare if two classes are in the same package.
1093 */
1094 JNIEXPORT jboolean JNICALL
1095 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1096
1097 /* Get classfile constants */
1098 #include "classfile_constants.h"
1099
1100 /*
1101 * Support for a VM-independent class format checker.
1102 */
1103 typedef struct {
1104 unsigned long code; /* byte code */
1105 unsigned long excs; /* exceptions */
1106 unsigned long etab; /* catch table */
1107 unsigned long lnum; /* line number */
1108 unsigned long lvar; /* local vars */
1109 } method_size_info;
1110
1111 typedef struct {
1112 unsigned int constants; /* constant pool */
1113 unsigned int fields;
1114 unsigned int methods;
1115 unsigned int interfaces;
1116 unsigned int fields2; /* number of static 2-word fields */
1117 unsigned int innerclasses; /* # of records in InnerClasses attr */
1118
1119 method_size_info clinit; /* memory used in clinit */
1120 method_size_info main; /* used everywhere else */
1121 } class_size_info;
1122
1123 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1124 JVM_ACC_FINAL | \
1125 JVM_ACC_SUPER | \
1126 JVM_ACC_INTERFACE | \
1127 JVM_ACC_ABSTRACT | \
1128 JVM_ACC_ANNOTATION | \
1129 JVM_ACC_ENUM | \
1130 JVM_ACC_SYNTHETIC)
1131
1132 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1133 JVM_ACC_PRIVATE | \
1134 JVM_ACC_PROTECTED | \
1135 JVM_ACC_STATIC | \
1136 JVM_ACC_FINAL | \
1137 JVM_ACC_VOLATILE | \
1138 JVM_ACC_TRANSIENT | \
1139 JVM_ACC_ENUM | \
1140 JVM_ACC_SYNTHETIC)
1141
1142 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1143 JVM_ACC_PRIVATE | \
1144 JVM_ACC_PROTECTED | \
1145 JVM_ACC_STATIC | \
1146 JVM_ACC_FINAL | \
1147 JVM_ACC_SYNCHRONIZED | \
1148 JVM_ACC_BRIDGE | \
1149 JVM_ACC_VARARGS | \
1150 JVM_ACC_NATIVE | \
1151 JVM_ACC_ABSTRACT | \
1152 JVM_ACC_STRICT | \
1153 JVM_ACC_SYNTHETIC)
1154
1155
1156 /*************************************************************************
1157 PART 3: I/O and Network Support
1158 ************************************************************************/
1159
1160 /*
1161 * Convert a pathname into native format. This function does syntactic
1162 * cleanup, such as removing redundant separator characters. It modifies
1163 * the given pathname string in place.
1164 */
1165 JNIEXPORT char * JNICALL
1166 JVM_NativePath(char *);
1167
1168 /*
1169 * The standard printing functions supported by the Java VM. (Should they
1170 * be renamed to JVM_* in the future?
1171 */
1172
1173 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1174 * respectively, with the following differences:
1175 * - The string written to str is always zero-terminated, also in case of
1176 * truncation (count is too small to hold the result string), unless count
1177 * is 0. In case of truncation count-1 characters are written and '\0'
1178 * appendend.
1179 * - If count is too small to hold the whole string, -1 is returned across
1180 * all platforms. */
1181
1182 JNIEXPORT int
1183 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1184
1185 JNIEXPORT int
1186 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1187
1188 JNIEXPORT int
1189 jio_fprintf(FILE *, const char *fmt, ...);
1190
1191 JNIEXPORT int
1192 jio_vfprintf(FILE *, const char *fmt, va_list args);
1193
1194
1195 JNIEXPORT void * JNICALL
1196 JVM_RawMonitorCreate(void);
1197
1198 JNIEXPORT void JNICALL
1199 JVM_RawMonitorDestroy(void *mon);
1200
1201 JNIEXPORT jint JNICALL
1202 JVM_RawMonitorEnter(void *mon);
1203
1204 JNIEXPORT void JNICALL
1205 JVM_RawMonitorExit(void *mon);
1206
1207 /*
1208 * java.lang.management support
1209 */
1210 JNIEXPORT void* JNICALL
1211 JVM_GetManagement(jint version);
1212
1213 /*
1214 * com.sun.tools.attach.VirtualMachine support
1215 *
1216 * Initialize the agent properties with the properties maintained in the VM.
1217 */
1218 JNIEXPORT jobject JNICALL
1219 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1220
1221 JNIEXPORT jstring JNICALL
1222 JVM_GetTemporaryDirectory(JNIEnv *env);
1223
1224 /* Generics reflection support.
1225 *
1226 * Returns information about the given class's EnclosingMethod
1227 * attribute, if present, or null if the class had no enclosing
1228 * method.
1229 *
1230 * If non-null, the returned array contains three elements. Element 0
1231 * is the java.lang.Class of which the enclosing method is a member,
1232 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1233 * method's name and descriptor, respectively.
1234 */
1235 JNIEXPORT jobjectArray JNICALL
1236 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1237
1238 /*
1239 * This structure is used by the launcher to get the default thread
1240 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1241 * version of 1.1. As it is not supported otherwise, it has been removed
1242 * from jni.h
1243 */
1244 typedef struct JDK1_1InitArgs {
1245 jint version;
1246
1247 char **properties;
1248 jint checkSource;
1249 jint nativeStackSize;
1250 jint javaStackSize;
1251 jint minHeapSize;
1252 jint maxHeapSize;
1253 jint verifyMode;
1254 char *classpath;
1255
1256 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1257 void (JNICALL *exit)(jint code);
1258 void (JNICALL *abort)(void);
1259
1260 jint enableClassGC;
1261 jint enableVerboseGC;
1262 jint disableAsyncGC;
1263 jint verbose;
1264 jboolean debugging;
1265 jint debugPort;
1266 } JDK1_1InitArgs;
1267
1268
1269 #ifdef __cplusplus
1270 } /* extern "C" */
1271
1272 #endif /* __cplusplus */
1273
1274 #endif /* !_JAVASOFT_JVM_H_ */