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 jboolean JNICALL
162 JVM_IsUseContainerSupport(void);
163
164 JNIEXPORT void * JNICALL
165 JVM_LoadLibrary(const char *name);
166
167 JNIEXPORT void JNICALL
168 JVM_UnloadLibrary(void * handle);
169
170 JNIEXPORT void * JNICALL
171 JVM_FindLibraryEntry(void *handle, const char *name);
172
173 JNIEXPORT jboolean JNICALL
174 JVM_IsSupportedJNIVersion(jint version);
175
176 JNIEXPORT jobjectArray JNICALL
177 JVM_GetVmArguments(JNIEnv *env);
178
179 JNIEXPORT void JNICALL
180 JVM_InitializeFromArchive(JNIEnv* env, jclass cls);
181
182 JNIEXPORT void JNICALL
183 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller,
184 jstring invokedName,
185 jobject invokedType,
186 jobject methodType,
187 jobject implMethodMember,
188 jobject instantiatedMethodType,
189 jclass lambdaProxyClass);
190
191 JNIEXPORT jclass JNICALL
192 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller,
193 jstring invokedName,
194 jobject invokedType,
195 jobject methodType,
196 jobject implMethodMember,
197 jobject instantiatedMethodType,
198 jboolean initialize);
199
200 JNIEXPORT jboolean JNICALL
201 JVM_IsCDSDumpingEnabled(JNIEnv* env);
202
203 JNIEXPORT jboolean JNICALL
204 JVM_IsCDSSharingEnabled(JNIEnv* env);
205
206 JNIEXPORT jlong JNICALL
207 JVM_GetRandomSeedForCDSDump();
208
209 /*
210 * java.lang.Throwable
211 */
212 JNIEXPORT void JNICALL
213 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
214
215 /*
216 * java.lang.StackTraceElement
217 */
218 JNIEXPORT void JNICALL
219 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
220
221 JNIEXPORT void JNICALL
222 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
223
224 /*
225 * java.lang.NullPointerException
226 */
227
228 JNIEXPORT jstring JNICALL
229 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
230
231 /*
232 * java.lang.StackWalker
233 */
234 enum {
235 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
236 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
237 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
238 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
239 };
240
241 JNIEXPORT jobject JNICALL
242 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
243 jint skip_frames, jint frame_count, jint start_index,
244 jobjectArray frames);
245
246 JNIEXPORT jint JNICALL
247 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
248 jint frame_count, jint start_index,
249 jobjectArray frames);
250
251 /*
252 * java.lang.Thread
253 */
254 JNIEXPORT void JNICALL
255 JVM_StartThread(JNIEnv *env, jobject thread);
256
257 JNIEXPORT void JNICALL
258 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
259
260 JNIEXPORT jboolean JNICALL
261 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
262
263 JNIEXPORT void JNICALL
264 JVM_SuspendThread(JNIEnv *env, jobject thread);
265
266 JNIEXPORT void JNICALL
267 JVM_ResumeThread(JNIEnv *env, jobject thread);
268
269 JNIEXPORT void JNICALL
270 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
271
272 JNIEXPORT void JNICALL
273 JVM_Yield(JNIEnv *env, jclass threadClass);
274
275 JNIEXPORT void JNICALL
276 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
277
278 JNIEXPORT jobject JNICALL
279 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
280
281 JNIEXPORT void JNICALL
282 JVM_Interrupt(JNIEnv *env, jobject thread);
283
284 JNIEXPORT jboolean JNICALL
285 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
286
287 JNIEXPORT void JNICALL
288 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
289
290 JNIEXPORT jobjectArray JNICALL
291 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
292
293 JNIEXPORT void JNICALL
294 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
295
296 /* getStackTrace() and getAllStackTraces() method */
297 JNIEXPORT jobjectArray JNICALL
298 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
299
300 /*
301 * java.lang.SecurityManager
302 */
303 JNIEXPORT jobjectArray JNICALL
304 JVM_GetClassContext(JNIEnv *env);
305
306 /*
307 * java.lang.Package
308 */
309 JNIEXPORT jstring JNICALL
310 JVM_GetSystemPackage(JNIEnv *env, jstring name);
311
312 JNIEXPORT jobjectArray JNICALL
313 JVM_GetSystemPackages(JNIEnv *env);
314
315 /*
316 * java.lang.ref.Reference
317 */
318 JNIEXPORT jobject JNICALL
319 JVM_GetAndClearReferencePendingList(JNIEnv *env);
320
321 JNIEXPORT jboolean JNICALL
322 JVM_HasReferencePendingList(JNIEnv *env);
323
324 JNIEXPORT void JNICALL
325 JVM_WaitForReferencePendingList(JNIEnv *env);
326
327 /*
328 * java.io.ObjectInputStream
329 */
330 JNIEXPORT jobject JNICALL
331 JVM_LatestUserDefinedLoader(JNIEnv *env);
332
333 /*
334 * java.lang.reflect.Array
335 */
336 JNIEXPORT jint JNICALL
337 JVM_GetArrayLength(JNIEnv *env, jobject arr);
338
339 JNIEXPORT jobject JNICALL
340 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
341
342 JNIEXPORT jvalue JNICALL
343 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
344
345 JNIEXPORT void JNICALL
346 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
347
348 JNIEXPORT void JNICALL
349 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
350 unsigned char vCode);
351
352 JNIEXPORT jobject JNICALL
353 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
354
355 JNIEXPORT jobject JNICALL
356 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
357
358
359 /*
360 * Returns the immediate caller class of the native method invoking
361 * JVM_GetCallerClass. The Method.invoke and other frames due to
362 * reflection machinery are skipped.
363 *
364 * The caller is expected to be marked with
365 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
366 * error if it is not marked properly.
367 */
368 JNIEXPORT jclass JNICALL
369 JVM_GetCallerClass(JNIEnv *env);
370
371
372 /*
373 * Find primitive classes
374 * utf: class name
375 */
376 JNIEXPORT jclass JNICALL
377 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
378
379
380 /*
381 * Find a class from a boot class loader. Returns NULL if class not found.
382 */
383 JNIEXPORT jclass JNICALL
384 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
385
386 /*
387 * Find a class from a given class loader. Throws ClassNotFoundException.
388 * name: name of class
389 * init: whether initialization is done
390 * loader: class loader to look up the class. This may not be the same as the caller's
391 * class loader.
392 * caller: initiating class. The initiating class may be null when a security
393 * manager is not installed.
394 */
395 JNIEXPORT jclass JNICALL
396 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
397 jobject loader, jclass caller);
398
399 /*
400 * Find a class from a given class.
401 */
402 JNIEXPORT jclass JNICALL
403 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
404 jclass from);
405
406 /* Find a loaded class cached by the VM */
407 JNIEXPORT jclass JNICALL
408 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
409
410 /* Define a class */
411 JNIEXPORT jclass JNICALL
412 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
413 jsize len, jobject pd);
414
415 /* Define a class with a source (added in JDK1.5) */
416 JNIEXPORT jclass JNICALL
417 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
418 const jbyte *buf, jsize len, jobject pd,
419 const char *source);
420
421 /*
422 * Define a class with the specified lookup class.
423 * lookup: Lookup class
424 * name: the name of the class
425 * buf: class bytes
426 * len: length of class bytes
427 * pd: protection domain
428 * init: initialize the class
429 * flags: properties of the class
430 * classData: private static pre-initialized field; may be null
431 */
432 JNIEXPORT jclass JNICALL
433 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
434 jsize len, jobject pd, jboolean init, int flags, jobject classData);
435
436 /*
437 * Module support funcions
438 */
439
440 /*
441 * Define a module with the specified packages and bind the module to the
442 * given class loader.
443 * module: module to define
444 * is_open: specifies if module is open (currently ignored)
445 * version: the module version
446 * location: the module location
447 * packages: array of packages in the module
448 */
449 JNIEXPORT void JNICALL
450 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
451 jstring location, jobjectArray packages);
452
453 /*
454 * Set the boot loader's unnamed module.
455 * module: boot loader's unnamed module
456 */
457 JNIEXPORT void JNICALL
458 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
459
460 /*
461 * Do a qualified export of a package.
462 * from_module: module containing the package to export
463 * package: name of the package to export
464 * to_module: module to export the package to
465 */
466 JNIEXPORT void JNICALL
467 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
468
469 /*
470 * Do an export of a package to all unnamed modules.
471 * from_module: module containing the package to export
472 * package: name of the package to export to all unnamed modules
473 */
474 JNIEXPORT void JNICALL
475 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
476
477 /*
478 * Do an unqualified export of a package.
479 * from_module: module containing the package to export
480 * package: name of the package to export
481 */
482 JNIEXPORT void JNICALL
483 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
484
485 /*
486 * Add a module to the list of modules that a given module can read.
487 * from_module: module requesting read access
488 * source_module: module that from_module wants to read
489 */
490 JNIEXPORT void JNICALL
491 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
492
493 /*
494 * Reflection support functions
495 */
496
497 JNIEXPORT jstring JNICALL
498 JVM_InitClassName(JNIEnv *env, jclass cls);
499
500 JNIEXPORT jobjectArray JNICALL
501 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
502
503 JNIEXPORT jboolean JNICALL
504 JVM_IsInterface(JNIEnv *env, jclass cls);
505
506 JNIEXPORT jobjectArray JNICALL
507 JVM_GetClassSigners(JNIEnv *env, jclass cls);
508
509 JNIEXPORT void JNICALL
510 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
511
512 JNIEXPORT jobject JNICALL
513 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
514
515 JNIEXPORT jboolean JNICALL
516 JVM_IsArrayClass(JNIEnv *env, jclass cls);
517
518 JNIEXPORT jboolean JNICALL
519 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
520
521 JNIEXPORT jboolean JNICALL
522 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
523
524 JNIEXPORT jint JNICALL
525 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
526
527 JNIEXPORT jobjectArray JNICALL
528 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
529
530 JNIEXPORT jclass JNICALL
531 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
532
533 JNIEXPORT jstring JNICALL
534 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
535
536 /* Generics support (JDK 1.5) */
537 JNIEXPORT jstring JNICALL
538 JVM_GetClassSignature(JNIEnv *env, jclass cls);
539
540 /* Annotations support (JDK 1.5) */
541 JNIEXPORT jbyteArray JNICALL
542 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
543
544 /* Type use annotations support (JDK 1.8) */
545
546 JNIEXPORT jbyteArray JNICALL
547 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
548
549 JNIEXPORT jbyteArray JNICALL
550 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
551
552 JNIEXPORT jbyteArray JNICALL
553 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
554
555 /*
556 * New (JDK 1.4) reflection implementation
557 */
558
559 JNIEXPORT jobjectArray JNICALL
560 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
561
562 JNIEXPORT jobjectArray JNICALL
563 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
564
565 JNIEXPORT jobjectArray JNICALL
566 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
567
568
569 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
570 This returns the access flags for the class as specified in the
571 class file rather than searching the InnerClasses attribute (if
572 present) to find the source-level access flags. Only the values of
573 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
574 valid. */
575 JNIEXPORT jint JNICALL
576 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
577
578 /* Nestmates - since JDK 11 */
579
580 JNIEXPORT jboolean JNICALL
581 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
582
583 JNIEXPORT jclass JNICALL
584 JVM_GetNestHost(JNIEnv *env, jclass current);
585
586 JNIEXPORT jobjectArray JNICALL
587 JVM_GetNestMembers(JNIEnv *env, jclass current);
588
589 /* Records - since JDK 14 */
590
591 JNIEXPORT jboolean JNICALL
592 JVM_IsRecord(JNIEnv *env, jclass cls);
593
594 JNIEXPORT jobjectArray JNICALL
595 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
596
597 /* Sealed types - since JDK 15 */
598
599 JNIEXPORT jobjectArray JNICALL
600 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current);
601
602 /* The following two reflection routines are still needed due to startup time issues */
603 /*
604 * java.lang.reflect.Method
605 */
606 JNIEXPORT jobject JNICALL
607 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
608
609 /*
610 * java.lang.reflect.Constructor
611 */
612 JNIEXPORT jobject JNICALL
613 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
614
615 /*
616 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
617 */
618
619 JNIEXPORT jobject JNICALL
620 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
621
622 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
623 (JNIEnv *env, jobject unused, jobject jcpool);
624
625 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
626 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
627
628 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
629 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
630
631 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
632 (JNIEnv *env, jobject obj, jobject unused, jint index);
633
634 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
635 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
636
637 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
638 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
639
640 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
641 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
642
643 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
644 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
645
646 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
647 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
648
649 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
650 (JNIEnv *env, jobject obj, jobject unused, jint index);
651
652 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
653 (JNIEnv *env, jobject obj, jobject unused, jint index);
654
655 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
656 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
657
658 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
659 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
660
661 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
662 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
663
664 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
665 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
666
667 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
668 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
669
670 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
671 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
672
673 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
674 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
675
676 /*
677 * Parameter reflection
678 */
679
680 JNIEXPORT jobjectArray JNICALL
681 JVM_GetMethodParameters(JNIEnv *env, jobject method);
682
683 /*
684 * java.security.*
685 */
686
687 JNIEXPORT jobject JNICALL
688 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
689
690 /*
691 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
692 * get the value will see a materialized value and not a scalar-replaced
693 * null value.
694 */
695 #define JVM_EnsureMaterializedForStackWalk(env, value) \
696 do {} while(0) // Nothing to do. The fact that the value escaped
697 // through a native method is enough.
698
699 JNIEXPORT jobject JNICALL
700 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
701
702 /*
703 * Signal support, used to implement the shutdown sequence. Every VM must
704 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
705 * (^C) and the latter for external termination (kill, system shutdown, etc.).
706 * Other platform-dependent signal values may also be supported.
707 */
708
709 JNIEXPORT void * JNICALL
710 JVM_RegisterSignal(jint sig, void *handler);
711
712 JNIEXPORT jboolean JNICALL
713 JVM_RaiseSignal(jint sig);
714
715 JNIEXPORT jint JNICALL
716 JVM_FindSignal(const char *name);
717
718 /*
719 * Retrieve the assertion directives for the specified class.
720 */
721 JNIEXPORT jboolean JNICALL
722 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
723
724 /*
725 * Retrieve the assertion directives from the VM.
726 */
727 JNIEXPORT jobject JNICALL
728 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
729
730 /*
731 * java.util.concurrent.atomic.AtomicLong
732 */
733 JNIEXPORT jboolean JNICALL
734 JVM_SupportsCX8(void);
735
736 /*
737 * com.sun.dtrace.jsdt support
738 */
739
740 #define JVM_TRACING_DTRACE_VERSION 1
741
742 /*
743 * Structure to pass one probe description to JVM
744 */
745 typedef struct {
746 jmethodID method;
747 jstring function;
748 jstring name;
749 void* reserved[4]; // for future use
750 } JVM_DTraceProbe;
751
752 /**
753 * Encapsulates the stability ratings for a DTrace provider field
754 */
755 typedef struct {
756 jint nameStability;
757 jint dataStability;
758 jint dependencyClass;
759 } JVM_DTraceInterfaceAttributes;
760
761 /*
762 * Structure to pass one provider description to JVM
763 */
764 typedef struct {
765 jstring name;
766 JVM_DTraceProbe* probes;
767 jint probe_count;
768 JVM_DTraceInterfaceAttributes providerAttributes;
769 JVM_DTraceInterfaceAttributes moduleAttributes;
770 JVM_DTraceInterfaceAttributes functionAttributes;
771 JVM_DTraceInterfaceAttributes nameAttributes;
772 JVM_DTraceInterfaceAttributes argsAttributes;
773 void* reserved[4]; // for future use
774 } JVM_DTraceProvider;
775
776 /*
777 * Get the version number the JVM was built with
778 */
779 JNIEXPORT jint JNICALL
780 JVM_DTraceGetVersion(JNIEnv* env);
781
782 /*
783 * Register new probe with given signature, return global handle
784 *
785 * The version passed in is the version that the library code was
786 * built with.
787 */
788 JNIEXPORT jlong JNICALL
789 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
790 jint providers_count, JVM_DTraceProvider* providers);
791
792 /*
793 * Check JSDT probe
794 */
795 JNIEXPORT jboolean JNICALL
796 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
797
798 /*
799 * Destroy custom DOF
800 */
801 JNIEXPORT void JNICALL
802 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
803
804 /*
805 * Check to see if DTrace is supported by OS
806 */
807 JNIEXPORT jboolean JNICALL
808 JVM_DTraceIsSupported(JNIEnv* env);
809
810 /*************************************************************************
811 PART 2: Support for the Verifier and Class File Format Checker
812 ************************************************************************/
813 /*
814 * Return the class name in UTF format. The result is valid
815 * until JVM_ReleaseUTf is called.
816 *
817 * The caller must treat the string as a constant and not modify it
818 * in any way.
819 */
820 JNIEXPORT const char * JNICALL
821 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
822
823 /*
824 * Returns the constant pool types in the buffer provided by "types."
825 */
826 JNIEXPORT void JNICALL
827 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
828
829 /*
830 * Returns the number of Constant Pool entries.
831 */
832 JNIEXPORT jint JNICALL
833 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
834
835 /*
836 * Returns the number of *declared* fields or methods.
837 */
838 JNIEXPORT jint JNICALL
839 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
840
841 JNIEXPORT jint JNICALL
842 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
843
844 /*
845 * Returns the CP indexes of exceptions raised by a given method.
846 * Places the result in the given buffer.
847 *
848 * The method is identified by method_index.
849 */
850 JNIEXPORT void JNICALL
851 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
852 unsigned short *exceptions);
853 /*
854 * Returns the number of exceptions raised by a given method.
855 * The method is identified by method_index.
856 */
857 JNIEXPORT jint JNICALL
858 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
859
860 /*
861 * Returns the byte code sequence 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_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
868 unsigned char *code);
869
870 /*
871 * Returns the length of the byte code sequence of a given method.
872 * The method is identified by method_index.
873 */
874 JNIEXPORT jint JNICALL
875 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
876
877 /*
878 * A structure used to a capture exception table entry in a Java method.
879 */
880 typedef struct {
881 jint start_pc;
882 jint end_pc;
883 jint handler_pc;
884 jint catchType;
885 } JVM_ExceptionTableEntryType;
886
887 /*
888 * Returns the exception table entry at entry_index of a given method.
889 * Places the result in the given buffer.
890 *
891 * The method is identified by method_index.
892 */
893 JNIEXPORT void JNICALL
894 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
895 jint entry_index,
896 JVM_ExceptionTableEntryType *entry);
897
898 /*
899 * Returns the length of the exception table of a given method.
900 * The method is identified by method_index.
901 */
902 JNIEXPORT jint JNICALL
903 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
904
905 /*
906 * Returns the modifiers of a given field.
907 * The field is identified by field_index.
908 */
909 JNIEXPORT jint JNICALL
910 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
911
912 /*
913 * Returns the modifiers of a given method.
914 * The method is identified by method_index.
915 */
916 JNIEXPORT jint JNICALL
917 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
918
919 /*
920 * Returns the number of local variables of a given method.
921 * The method is identified by method_index.
922 */
923 JNIEXPORT jint JNICALL
924 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
925
926 /*
927 * Returns the number of arguments (including this pointer) of a given method.
928 * The method is identified by method_index.
929 */
930 JNIEXPORT jint JNICALL
931 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
932
933 /*
934 * Returns the maximum amount of stack (in words) used by a given method.
935 * The method is identified by method_index.
936 */
937 JNIEXPORT jint JNICALL
938 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
939
940 /*
941 * Is a given method a constructor.
942 * The method is identified by method_index.
943 */
944 JNIEXPORT jboolean JNICALL
945 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
946
947 /*
948 * Is the given method generated by the VM.
949 * The method is identified by method_index.
950 */
951 JNIEXPORT jboolean JNICALL
952 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
953
954 /*
955 * Returns the name of a given method in UTF format.
956 * The result remains valid until JVM_ReleaseUTF is called.
957 *
958 * The caller must treat the string as a constant and not modify it
959 * in any way.
960 */
961 JNIEXPORT const char * JNICALL
962 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
963
964 /*
965 * Returns the signature of a given method in UTF format.
966 * The result remains valid until JVM_ReleaseUTF is called.
967 *
968 * The caller must treat the string as a constant and not modify it
969 * in any way.
970 */
971 JNIEXPORT const char * JNICALL
972 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
973
974 /*
975 * Returns the name of the field referred to at a given constant pool
976 * index.
977 *
978 * The result is in UTF format and remains valid until JVM_ReleaseUTF
979 * is called.
980 *
981 * The caller must treat the string as a constant and not modify it
982 * in any way.
983 */
984 JNIEXPORT const char * JNICALL
985 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
986
987 /*
988 * Returns the name of the method referred to at a given constant pool
989 * index.
990 *
991 * The result is in UTF format and remains valid until JVM_ReleaseUTF
992 * is called.
993 *
994 * The caller must treat the string as a constant and not modify it
995 * in any way.
996 */
997 JNIEXPORT const char * JNICALL
998 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
999
1000 /*
1001 * Returns the signature of the method referred to at a given constant pool
1002 * index.
1003 *
1004 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1005 * is called.
1006 *
1007 * The caller must treat the string as a constant and not modify it
1008 * in any way.
1009 */
1010 JNIEXPORT const char * JNICALL
1011 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
1012
1013 /*
1014 * Returns the signature of the field referred to at a given constant pool
1015 * index.
1016 *
1017 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1018 * is called.
1019 *
1020 * The caller must treat the string as a constant and not modify it
1021 * in any way.
1022 */
1023 JNIEXPORT const char * JNICALL
1024 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
1025
1026 /*
1027 * Returns the class name referred to at a given constant pool index.
1028 *
1029 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1030 * is called.
1031 *
1032 * The caller must treat the string as a constant and not modify it
1033 * in any way.
1034 */
1035 JNIEXPORT const char * JNICALL
1036 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1037
1038 /*
1039 * Returns the class name referred to at a given constant pool index.
1040 *
1041 * The constant pool entry must refer to a CONSTANT_Fieldref.
1042 *
1043 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1044 * is called.
1045 *
1046 * The caller must treat the string as a constant and not modify it
1047 * in any way.
1048 */
1049 JNIEXPORT const char * JNICALL
1050 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1051
1052 /*
1053 * Returns the class name referred to at a given constant pool index.
1054 *
1055 * The constant pool entry must refer to CONSTANT_Methodref or
1056 * CONSTANT_InterfaceMethodref.
1057 *
1058 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1059 * is called.
1060 *
1061 * The caller must treat the string as a constant and not modify it
1062 * in any way.
1063 */
1064 JNIEXPORT const char * JNICALL
1065 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1066
1067 /*
1068 * Returns the modifiers of a field in calledClass. The field is
1069 * referred to in class cb at constant pool entry index.
1070 *
1071 * The caller must treat the string as a constant and not modify it
1072 * in any way.
1073 *
1074 * Returns -1 if the field does not exist in calledClass.
1075 */
1076 JNIEXPORT jint JNICALL
1077 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1078
1079 /*
1080 * Returns the modifiers of a method in calledClass. The method is
1081 * referred to in class cb at constant pool entry index.
1082 *
1083 * Returns -1 if the method does not exist in calledClass.
1084 */
1085 JNIEXPORT jint JNICALL
1086 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1087
1088 /*
1089 * Releases the UTF string obtained from the VM.
1090 */
1091 JNIEXPORT void JNICALL
1092 JVM_ReleaseUTF(const char *utf);
1093
1094 /*
1095 * Compare if two classes are in the same package.
1096 */
1097 JNIEXPORT jboolean JNICALL
1098 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1099
1100 /* Get classfile constants */
1101 #include "classfile_constants.h"
1102
1103 /*
1104 * Support for a VM-independent class format checker.
1105 */
1106 typedef struct {
1107 unsigned long code; /* byte code */
1108 unsigned long excs; /* exceptions */
1109 unsigned long etab; /* catch table */
1110 unsigned long lnum; /* line number */
1111 unsigned long lvar; /* local vars */
1112 } method_size_info;
1113
1114 typedef struct {
1115 unsigned int constants; /* constant pool */
1116 unsigned int fields;
1117 unsigned int methods;
1118 unsigned int interfaces;
1119 unsigned int fields2; /* number of static 2-word fields */
1120 unsigned int innerclasses; /* # of records in InnerClasses attr */
1121
1122 method_size_info clinit; /* memory used in clinit */
1123 method_size_info main; /* used everywhere else */
1124 } class_size_info;
1125
1126 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1127 JVM_ACC_FINAL | \
1128 JVM_ACC_SUPER | \
1129 JVM_ACC_INTERFACE | \
1130 JVM_ACC_ABSTRACT | \
1131 JVM_ACC_ANNOTATION | \
1132 JVM_ACC_ENUM | \
1133 JVM_ACC_SYNTHETIC)
1134
1135 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1136 JVM_ACC_PRIVATE | \
1137 JVM_ACC_PROTECTED | \
1138 JVM_ACC_STATIC | \
1139 JVM_ACC_FINAL | \
1140 JVM_ACC_VOLATILE | \
1141 JVM_ACC_TRANSIENT | \
1142 JVM_ACC_ENUM | \
1143 JVM_ACC_SYNTHETIC)
1144
1145 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1146 JVM_ACC_PRIVATE | \
1147 JVM_ACC_PROTECTED | \
1148 JVM_ACC_STATIC | \
1149 JVM_ACC_FINAL | \
1150 JVM_ACC_SYNCHRONIZED | \
1151 JVM_ACC_BRIDGE | \
1152 JVM_ACC_VARARGS | \
1153 JVM_ACC_NATIVE | \
1154 JVM_ACC_ABSTRACT | \
1155 JVM_ACC_STRICT | \
1156 JVM_ACC_SYNTHETIC)
1157
1158
1159 /*************************************************************************
1160 PART 3: I/O and Network Support
1161 ************************************************************************/
1162
1163 /*
1164 * Convert a pathname into native format. This function does syntactic
1165 * cleanup, such as removing redundant separator characters. It modifies
1166 * the given pathname string in place.
1167 */
1168 JNIEXPORT char * JNICALL
1169 JVM_NativePath(char *);
1170
1171 /*
1172 * The standard printing functions supported by the Java VM. (Should they
1173 * be renamed to JVM_* in the future?
1174 */
1175
1176 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1177 * respectively, with the following differences:
1178 * - The string written to str is always zero-terminated, also in case of
1179 * truncation (count is too small to hold the result string), unless count
1180 * is 0. In case of truncation count-1 characters are written and '\0'
1181 * appendend.
1182 * - If count is too small to hold the whole string, -1 is returned across
1183 * all platforms. */
1184
1185 JNIEXPORT int
1186 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1187
1188 JNIEXPORT int
1189 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1190
1191 JNIEXPORT int
1192 jio_fprintf(FILE *, const char *fmt, ...);
1193
1194 JNIEXPORT int
1195 jio_vfprintf(FILE *, const char *fmt, va_list args);
1196
1197
1198 JNIEXPORT void * JNICALL
1199 JVM_RawMonitorCreate(void);
1200
1201 JNIEXPORT void JNICALL
1202 JVM_RawMonitorDestroy(void *mon);
1203
1204 JNIEXPORT jint JNICALL
1205 JVM_RawMonitorEnter(void *mon);
1206
1207 JNIEXPORT void JNICALL
1208 JVM_RawMonitorExit(void *mon);
1209
1210 /*
1211 * java.lang.management support
1212 */
1213 JNIEXPORT void* JNICALL
1214 JVM_GetManagement(jint version);
1215
1216 /*
1217 * com.sun.tools.attach.VirtualMachine support
1218 *
1219 * Initialize the agent properties with the properties maintained in the VM.
1220 */
1221 JNIEXPORT jobject JNICALL
1222 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1223
1224 JNIEXPORT jstring JNICALL
1225 JVM_GetTemporaryDirectory(JNIEnv *env);
1226
1227 /* Generics reflection support.
1228 *
1229 * Returns information about the given class's EnclosingMethod
1230 * attribute, if present, or null if the class had no enclosing
1231 * method.
1232 *
1233 * If non-null, the returned array contains three elements. Element 0
1234 * is the java.lang.Class of which the enclosing method is a member,
1235 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1236 * method's name and descriptor, respectively.
1237 */
1238 JNIEXPORT jobjectArray JNICALL
1239 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1240
1241 /*
1242 * This structure is used by the launcher to get the default thread
1243 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1244 * version of 1.1. As it is not supported otherwise, it has been removed
1245 * from jni.h
1246 */
1247 typedef struct JDK1_1InitArgs {
1248 jint version;
1249
1250 char **properties;
1251 jint checkSource;
1252 jint nativeStackSize;
1253 jint javaStackSize;
1254 jint minHeapSize;
1255 jint maxHeapSize;
1256 jint verifyMode;
1257 char *classpath;
1258
1259 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1260 void (JNICALL *exit)(jint code);
1261 void (JNICALL *abort)(void);
1262
1263 jint enableClassGC;
1264 jint enableVerboseGC;
1265 jint disableAsyncGC;
1266 jint verbose;
1267 jboolean debugging;
1268 jint debugPort;
1269 } JDK1_1InitArgs;
1270
1271
1272 #ifdef __cplusplus
1273 } /* extern "C" */
1274
1275 #endif /* __cplusplus */
1276
1277 #endif /* !_JAVASOFT_JVM_H_ */