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 JNIEXPORT void JNICALL
210 JVM_CDSTraceResolve(JNIEnv* env, jclass ignore, jstring line);
211
212 /*
213 * java.lang.Throwable
214 */
215 JNIEXPORT void JNICALL
216 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
217
218 /*
219 * java.lang.StackTraceElement
220 */
221 JNIEXPORT void JNICALL
222 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
223
224 JNIEXPORT void JNICALL
225 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
226
227 /*
228 * java.lang.NullPointerException
229 */
230
231 JNIEXPORT jstring JNICALL
232 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
233
234 /*
235 * java.lang.StackWalker
236 */
237 enum {
238 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
239 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
240 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
241 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
242 };
243
244 JNIEXPORT jobject JNICALL
245 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
246 jint skip_frames, jint frame_count, jint start_index,
247 jobjectArray frames);
248
249 JNIEXPORT jint JNICALL
250 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
251 jint frame_count, jint start_index,
252 jobjectArray frames);
253
254 /*
255 * java.lang.Thread
256 */
257 JNIEXPORT void JNICALL
258 JVM_StartThread(JNIEnv *env, jobject thread);
259
260 JNIEXPORT void JNICALL
261 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
262
263 JNIEXPORT jboolean JNICALL
264 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
265
266 JNIEXPORT void JNICALL
267 JVM_SuspendThread(JNIEnv *env, jobject thread);
268
269 JNIEXPORT void JNICALL
270 JVM_ResumeThread(JNIEnv *env, jobject thread);
271
272 JNIEXPORT void JNICALL
273 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
274
275 JNIEXPORT void JNICALL
276 JVM_Yield(JNIEnv *env, jclass threadClass);
277
278 JNIEXPORT void JNICALL
279 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
280
281 JNIEXPORT jobject JNICALL
282 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
283
284 JNIEXPORT void JNICALL
285 JVM_Interrupt(JNIEnv *env, jobject thread);
286
287 JNIEXPORT jboolean JNICALL
288 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
289
290 JNIEXPORT void JNICALL
291 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
292
293 JNIEXPORT jobjectArray JNICALL
294 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
295
296 JNIEXPORT void JNICALL
297 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
298
299 /* getStackTrace() and getAllStackTraces() method */
300 JNIEXPORT jobjectArray JNICALL
301 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
302
303 /*
304 * java.lang.SecurityManager
305 */
306 JNIEXPORT jobjectArray JNICALL
307 JVM_GetClassContext(JNIEnv *env);
308
309 /*
310 * java.lang.Package
311 */
312 JNIEXPORT jstring JNICALL
313 JVM_GetSystemPackage(JNIEnv *env, jstring name);
314
315 JNIEXPORT jobjectArray JNICALL
316 JVM_GetSystemPackages(JNIEnv *env);
317
318 /*
319 * java.lang.ref.Reference
320 */
321 JNIEXPORT jobject JNICALL
322 JVM_GetAndClearReferencePendingList(JNIEnv *env);
323
324 JNIEXPORT jboolean JNICALL
325 JVM_HasReferencePendingList(JNIEnv *env);
326
327 JNIEXPORT void JNICALL
328 JVM_WaitForReferencePendingList(JNIEnv *env);
329
330 /*
331 * java.io.ObjectInputStream
332 */
333 JNIEXPORT jobject JNICALL
334 JVM_LatestUserDefinedLoader(JNIEnv *env);
335
336 /*
337 * java.lang.reflect.Array
338 */
339 JNIEXPORT jint JNICALL
340 JVM_GetArrayLength(JNIEnv *env, jobject arr);
341
342 JNIEXPORT jobject JNICALL
343 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
344
345 JNIEXPORT jvalue JNICALL
346 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
347
348 JNIEXPORT void JNICALL
349 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
350
351 JNIEXPORT void JNICALL
352 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
353 unsigned char vCode);
354
355 JNIEXPORT jobject JNICALL
356 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
357
358 JNIEXPORT jobject JNICALL
359 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
360
361
362 /*
363 * Returns the immediate caller class of the native method invoking
364 * JVM_GetCallerClass. The Method.invoke and other frames due to
365 * reflection machinery are skipped.
366 *
367 * The caller is expected to be marked with
368 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
369 * error if it is not marked properly.
370 */
371 JNIEXPORT jclass JNICALL
372 JVM_GetCallerClass(JNIEnv *env);
373
374
375 /*
376 * Find primitive classes
377 * utf: class name
378 */
379 JNIEXPORT jclass JNICALL
380 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
381
382
383 /*
384 * Find a class from a boot class loader. Returns NULL if class not found.
385 */
386 JNIEXPORT jclass JNICALL
387 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
388
389 /*
390 * Find a class from a given class loader. Throws ClassNotFoundException.
391 * name: name of class
392 * init: whether initialization is done
393 * loader: class loader to look up the class. This may not be the same as the caller's
394 * class loader.
395 * caller: initiating class. The initiating class may be null when a security
396 * manager is not installed.
397 */
398 JNIEXPORT jclass JNICALL
399 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
400 jobject loader, jclass caller);
401
402 /*
403 * Find a class from a given class.
404 */
405 JNIEXPORT jclass JNICALL
406 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
407 jclass from);
408
409 /* Find a loaded class cached by the VM */
410 JNIEXPORT jclass JNICALL
411 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
412
413 /* Define a class */
414 JNIEXPORT jclass JNICALL
415 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
416 jsize len, jobject pd);
417
418 /* Define a class with a source (added in JDK1.5) */
419 JNIEXPORT jclass JNICALL
420 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
421 const jbyte *buf, jsize len, jobject pd,
422 const char *source);
423
424 /*
425 * Define a class with the specified lookup class.
426 * lookup: Lookup class
427 * name: the name of the class
428 * buf: class bytes
429 * len: length of class bytes
430 * pd: protection domain
431 * init: initialize the class
432 * flags: properties of the class
433 * classData: private static pre-initialized field; may be null
434 */
435 JNIEXPORT jclass JNICALL
436 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
437 jsize len, jobject pd, jboolean init, int flags, jobject classData);
438
439 /*
440 * Module support funcions
441 */
442
443 /*
444 * Define a module with the specified packages and bind the module to the
445 * given class loader.
446 * module: module to define
447 * is_open: specifies if module is open (currently ignored)
448 * version: the module version
449 * location: the module location
450 * packages: array of packages in the module
451 */
452 JNIEXPORT void JNICALL
453 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
454 jstring location, jobjectArray packages);
455
456 /*
457 * Set the boot loader's unnamed module.
458 * module: boot loader's unnamed module
459 */
460 JNIEXPORT void JNICALL
461 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
462
463 /*
464 * Do a qualified export of a package.
465 * from_module: module containing the package to export
466 * package: name of the package to export
467 * to_module: module to export the package to
468 */
469 JNIEXPORT void JNICALL
470 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
471
472 /*
473 * Do an export of a package to all unnamed modules.
474 * from_module: module containing the package to export
475 * package: name of the package to export to all unnamed modules
476 */
477 JNIEXPORT void JNICALL
478 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
479
480 /*
481 * Do an unqualified export of a package.
482 * from_module: module containing the package to export
483 * package: name of the package to export
484 */
485 JNIEXPORT void JNICALL
486 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
487
488 /*
489 * Add a module to the list of modules that a given module can read.
490 * from_module: module requesting read access
491 * source_module: module that from_module wants to read
492 */
493 JNIEXPORT void JNICALL
494 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
495
496 /*
497 * Reflection support functions
498 */
499
500 JNIEXPORT jstring JNICALL
501 JVM_InitClassName(JNIEnv *env, jclass cls);
502
503 JNIEXPORT jobjectArray JNICALL
504 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
505
506 JNIEXPORT jboolean JNICALL
507 JVM_IsInterface(JNIEnv *env, jclass cls);
508
509 JNIEXPORT jobjectArray JNICALL
510 JVM_GetClassSigners(JNIEnv *env, jclass cls);
511
512 JNIEXPORT void JNICALL
513 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
514
515 JNIEXPORT jobject JNICALL
516 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
517
518 JNIEXPORT jboolean JNICALL
519 JVM_IsArrayClass(JNIEnv *env, jclass cls);
520
521 JNIEXPORT jboolean JNICALL
522 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
523
524 JNIEXPORT jboolean JNICALL
525 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
526
527 JNIEXPORT jint JNICALL
528 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
529
530 JNIEXPORT jobjectArray JNICALL
531 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
532
533 JNIEXPORT jclass JNICALL
534 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
535
536 JNIEXPORT jstring JNICALL
537 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
538
539 /* Generics support (JDK 1.5) */
540 JNIEXPORT jstring JNICALL
541 JVM_GetClassSignature(JNIEnv *env, jclass cls);
542
543 /* Annotations support (JDK 1.5) */
544 JNIEXPORT jbyteArray JNICALL
545 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
546
547 /* Type use annotations support (JDK 1.8) */
548
549 JNIEXPORT jbyteArray JNICALL
550 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
551
552 JNIEXPORT jbyteArray JNICALL
553 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
554
555 JNIEXPORT jbyteArray JNICALL
556 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
557
558 /*
559 * New (JDK 1.4) reflection implementation
560 */
561
562 JNIEXPORT jobjectArray JNICALL
563 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
564
565 JNIEXPORT jobjectArray JNICALL
566 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
567
568 JNIEXPORT jobjectArray JNICALL
569 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
570
571
572 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
573 This returns the access flags for the class as specified in the
574 class file rather than searching the InnerClasses attribute (if
575 present) to find the source-level access flags. Only the values of
576 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
577 valid. */
578 JNIEXPORT jint JNICALL
579 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
580
581 /* Nestmates - since JDK 11 */
582
583 JNIEXPORT jboolean JNICALL
584 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
585
586 JNIEXPORT jclass JNICALL
587 JVM_GetNestHost(JNIEnv *env, jclass current);
588
589 JNIEXPORT jobjectArray JNICALL
590 JVM_GetNestMembers(JNIEnv *env, jclass current);
591
592 /* Records - since JDK 14 */
593
594 JNIEXPORT jboolean JNICALL
595 JVM_IsRecord(JNIEnv *env, jclass cls);
596
597 JNIEXPORT jobjectArray JNICALL
598 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
599
600 /* Sealed types - since JDK 15 */
601
602 JNIEXPORT jobjectArray JNICALL
603 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current);
604
605 /* The following two reflection routines are still needed due to startup time issues */
606 /*
607 * java.lang.reflect.Method
608 */
609 JNIEXPORT jobject JNICALL
610 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
611
612 /*
613 * java.lang.reflect.Constructor
614 */
615 JNIEXPORT jobject JNICALL
616 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
617
618 /*
619 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
620 */
621
622 JNIEXPORT jobject JNICALL
623 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
624
625 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
626 (JNIEnv *env, jobject unused, jobject jcpool);
627
628 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
629 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
630
631 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
632 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
633
634 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
635 (JNIEnv *env, jobject obj, jobject unused, jint index);
636
637 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
638 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
639
640 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
641 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
642
643 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
644 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
645
646 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
647 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
648
649 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
650 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
651
652 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
653 (JNIEnv *env, jobject obj, jobject unused, jint index);
654
655 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
656 (JNIEnv *env, jobject obj, jobject unused, jint index);
657
658 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
659 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
660
661 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
662 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
663
664 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
665 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
666
667 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
668 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
669
670 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
671 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
672
673 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
674 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
675
676 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
677 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
678
679 /*
680 * Parameter reflection
681 */
682
683 JNIEXPORT jobjectArray JNICALL
684 JVM_GetMethodParameters(JNIEnv *env, jobject method);
685
686 /*
687 * java.security.*
688 */
689
690 JNIEXPORT jobject JNICALL
691 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
692
693 /*
694 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
695 * get the value will see a materialized value and not a scalar-replaced
696 * null value.
697 */
698 #define JVM_EnsureMaterializedForStackWalk(env, value) \
699 do {} while(0) // Nothing to do. The fact that the value escaped
700 // through a native method is enough.
701
702 JNIEXPORT jobject JNICALL
703 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
704
705 /*
706 * Signal support, used to implement the shutdown sequence. Every VM must
707 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
708 * (^C) and the latter for external termination (kill, system shutdown, etc.).
709 * Other platform-dependent signal values may also be supported.
710 */
711
712 JNIEXPORT void * JNICALL
713 JVM_RegisterSignal(jint sig, void *handler);
714
715 JNIEXPORT jboolean JNICALL
716 JVM_RaiseSignal(jint sig);
717
718 JNIEXPORT jint JNICALL
719 JVM_FindSignal(const char *name);
720
721 /*
722 * Retrieve the assertion directives for the specified class.
723 */
724 JNIEXPORT jboolean JNICALL
725 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
726
727 /*
728 * Retrieve the assertion directives from the VM.
729 */
730 JNIEXPORT jobject JNICALL
731 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
732
733 /*
734 * java.util.concurrent.atomic.AtomicLong
735 */
736 JNIEXPORT jboolean JNICALL
737 JVM_SupportsCX8(void);
738
739 /*
740 * com.sun.dtrace.jsdt support
741 */
742
743 #define JVM_TRACING_DTRACE_VERSION 1
744
745 /*
746 * Structure to pass one probe description to JVM
747 */
748 typedef struct {
749 jmethodID method;
750 jstring function;
751 jstring name;
752 void* reserved[4]; // for future use
753 } JVM_DTraceProbe;
754
755 /**
756 * Encapsulates the stability ratings for a DTrace provider field
757 */
758 typedef struct {
759 jint nameStability;
760 jint dataStability;
761 jint dependencyClass;
762 } JVM_DTraceInterfaceAttributes;
763
764 /*
765 * Structure to pass one provider description to JVM
766 */
767 typedef struct {
768 jstring name;
769 JVM_DTraceProbe* probes;
770 jint probe_count;
771 JVM_DTraceInterfaceAttributes providerAttributes;
772 JVM_DTraceInterfaceAttributes moduleAttributes;
773 JVM_DTraceInterfaceAttributes functionAttributes;
774 JVM_DTraceInterfaceAttributes nameAttributes;
775 JVM_DTraceInterfaceAttributes argsAttributes;
776 void* reserved[4]; // for future use
777 } JVM_DTraceProvider;
778
779 /*
780 * Get the version number the JVM was built with
781 */
782 JNIEXPORT jint JNICALL
783 JVM_DTraceGetVersion(JNIEnv* env);
784
785 /*
786 * Register new probe with given signature, return global handle
787 *
788 * The version passed in is the version that the library code was
789 * built with.
790 */
791 JNIEXPORT jlong JNICALL
792 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
793 jint providers_count, JVM_DTraceProvider* providers);
794
795 /*
796 * Check JSDT probe
797 */
798 JNIEXPORT jboolean JNICALL
799 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
800
801 /*
802 * Destroy custom DOF
803 */
804 JNIEXPORT void JNICALL
805 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
806
807 /*
808 * Check to see if DTrace is supported by OS
809 */
810 JNIEXPORT jboolean JNICALL
811 JVM_DTraceIsSupported(JNIEnv* env);
812
813 /*************************************************************************
814 PART 2: Support for the Verifier and Class File Format Checker
815 ************************************************************************/
816 /*
817 * Return the class name in UTF format. The result is valid
818 * until JVM_ReleaseUTf is called.
819 *
820 * The caller must treat the string as a constant and not modify it
821 * in any way.
822 */
823 JNIEXPORT const char * JNICALL
824 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
825
826 /*
827 * Returns the constant pool types in the buffer provided by "types."
828 */
829 JNIEXPORT void JNICALL
830 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
831
832 /*
833 * Returns the number of Constant Pool entries.
834 */
835 JNIEXPORT jint JNICALL
836 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
837
838 /*
839 * Returns the number of *declared* fields or methods.
840 */
841 JNIEXPORT jint JNICALL
842 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
843
844 JNIEXPORT jint JNICALL
845 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
846
847 /*
848 * Returns the CP indexes of exceptions raised by a given method.
849 * Places the result in the given buffer.
850 *
851 * The method is identified by method_index.
852 */
853 JNIEXPORT void JNICALL
854 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
855 unsigned short *exceptions);
856 /*
857 * Returns the number of exceptions raised by a given method.
858 * The method is identified by method_index.
859 */
860 JNIEXPORT jint JNICALL
861 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
862
863 /*
864 * Returns the byte code sequence of a given method.
865 * Places the result in the given buffer.
866 *
867 * The method is identified by method_index.
868 */
869 JNIEXPORT void JNICALL
870 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
871 unsigned char *code);
872
873 /*
874 * Returns the length of the byte code sequence of a given method.
875 * The method is identified by method_index.
876 */
877 JNIEXPORT jint JNICALL
878 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
879
880 /*
881 * A structure used to a capture exception table entry in a Java method.
882 */
883 typedef struct {
884 jint start_pc;
885 jint end_pc;
886 jint handler_pc;
887 jint catchType;
888 } JVM_ExceptionTableEntryType;
889
890 /*
891 * Returns the exception table entry at entry_index of a given method.
892 * Places the result in the given buffer.
893 *
894 * The method is identified by method_index.
895 */
896 JNIEXPORT void JNICALL
897 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
898 jint entry_index,
899 JVM_ExceptionTableEntryType *entry);
900
901 /*
902 * Returns the length of the exception table of a given method.
903 * The method is identified by method_index.
904 */
905 JNIEXPORT jint JNICALL
906 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
907
908 /*
909 * Returns the modifiers of a given field.
910 * The field is identified by field_index.
911 */
912 JNIEXPORT jint JNICALL
913 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
914
915 /*
916 * Returns the modifiers of a given method.
917 * The method is identified by method_index.
918 */
919 JNIEXPORT jint JNICALL
920 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
921
922 /*
923 * Returns the number of local variables of a given method.
924 * The method is identified by method_index.
925 */
926 JNIEXPORT jint JNICALL
927 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
928
929 /*
930 * Returns the number of arguments (including this pointer) of a given method.
931 * The method is identified by method_index.
932 */
933 JNIEXPORT jint JNICALL
934 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
935
936 /*
937 * Returns the maximum amount of stack (in words) used by a given method.
938 * The method is identified by method_index.
939 */
940 JNIEXPORT jint JNICALL
941 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
942
943 /*
944 * Is a given method a constructor.
945 * The method is identified by method_index.
946 */
947 JNIEXPORT jboolean JNICALL
948 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
949
950 /*
951 * Is the given method generated by the VM.
952 * The method is identified by method_index.
953 */
954 JNIEXPORT jboolean JNICALL
955 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
956
957 /*
958 * Returns the name of a given method in UTF format.
959 * The result remains valid until JVM_ReleaseUTF 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_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
966
967 /*
968 * Returns the signature of a given method in UTF format.
969 * The result remains valid until JVM_ReleaseUTF is called.
970 *
971 * The caller must treat the string as a constant and not modify it
972 * in any way.
973 */
974 JNIEXPORT const char * JNICALL
975 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
976
977 /*
978 * Returns the name of the field referred to at a given constant pool
979 * index.
980 *
981 * The result is in UTF format and remains valid until JVM_ReleaseUTF
982 * is called.
983 *
984 * The caller must treat the string as a constant and not modify it
985 * in any way.
986 */
987 JNIEXPORT const char * JNICALL
988 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
989
990 /*
991 * Returns the name of the method referred to at a given constant pool
992 * index.
993 *
994 * The result is in UTF format and remains valid until JVM_ReleaseUTF
995 * is called.
996 *
997 * The caller must treat the string as a constant and not modify it
998 * in any way.
999 */
1000 JNIEXPORT const char * JNICALL
1001 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
1002
1003 /*
1004 * Returns the signature of the method referred to at a given constant pool
1005 * index.
1006 *
1007 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1008 * is called.
1009 *
1010 * The caller must treat the string as a constant and not modify it
1011 * in any way.
1012 */
1013 JNIEXPORT const char * JNICALL
1014 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
1015
1016 /*
1017 * Returns the signature of the field referred to at a given constant pool
1018 * index.
1019 *
1020 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1021 * is called.
1022 *
1023 * The caller must treat the string as a constant and not modify it
1024 * in any way.
1025 */
1026 JNIEXPORT const char * JNICALL
1027 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
1028
1029 /*
1030 * Returns the class name referred to at a given constant pool index.
1031 *
1032 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1033 * is called.
1034 *
1035 * The caller must treat the string as a constant and not modify it
1036 * in any way.
1037 */
1038 JNIEXPORT const char * JNICALL
1039 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1040
1041 /*
1042 * Returns the class name referred to at a given constant pool index.
1043 *
1044 * The constant pool entry must refer to a CONSTANT_Fieldref.
1045 *
1046 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1047 * is called.
1048 *
1049 * The caller must treat the string as a constant and not modify it
1050 * in any way.
1051 */
1052 JNIEXPORT const char * JNICALL
1053 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1054
1055 /*
1056 * Returns the class name referred to at a given constant pool index.
1057 *
1058 * The constant pool entry must refer to CONSTANT_Methodref or
1059 * CONSTANT_InterfaceMethodref.
1060 *
1061 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1062 * is called.
1063 *
1064 * The caller must treat the string as a constant and not modify it
1065 * in any way.
1066 */
1067 JNIEXPORT const char * JNICALL
1068 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1069
1070 /*
1071 * Returns the modifiers of a field in calledClass. The field is
1072 * referred to in class cb at constant pool entry index.
1073 *
1074 * The caller must treat the string as a constant and not modify it
1075 * in any way.
1076 *
1077 * Returns -1 if the field does not exist in calledClass.
1078 */
1079 JNIEXPORT jint JNICALL
1080 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1081
1082 /*
1083 * Returns the modifiers of a method in calledClass. The method is
1084 * referred to in class cb at constant pool entry index.
1085 *
1086 * Returns -1 if the method does not exist in calledClass.
1087 */
1088 JNIEXPORT jint JNICALL
1089 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1090
1091 /*
1092 * Releases the UTF string obtained from the VM.
1093 */
1094 JNIEXPORT void JNICALL
1095 JVM_ReleaseUTF(const char *utf);
1096
1097 /*
1098 * Compare if two classes are in the same package.
1099 */
1100 JNIEXPORT jboolean JNICALL
1101 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1102
1103 /* Get classfile constants */
1104 #include "classfile_constants.h"
1105
1106 /*
1107 * Support for a VM-independent class format checker.
1108 */
1109 typedef struct {
1110 unsigned long code; /* byte code */
1111 unsigned long excs; /* exceptions */
1112 unsigned long etab; /* catch table */
1113 unsigned long lnum; /* line number */
1114 unsigned long lvar; /* local vars */
1115 } method_size_info;
1116
1117 typedef struct {
1118 unsigned int constants; /* constant pool */
1119 unsigned int fields;
1120 unsigned int methods;
1121 unsigned int interfaces;
1122 unsigned int fields2; /* number of static 2-word fields */
1123 unsigned int innerclasses; /* # of records in InnerClasses attr */
1124
1125 method_size_info clinit; /* memory used in clinit */
1126 method_size_info main; /* used everywhere else */
1127 } class_size_info;
1128
1129 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1130 JVM_ACC_FINAL | \
1131 JVM_ACC_SUPER | \
1132 JVM_ACC_INTERFACE | \
1133 JVM_ACC_ABSTRACT | \
1134 JVM_ACC_ANNOTATION | \
1135 JVM_ACC_ENUM | \
1136 JVM_ACC_SYNTHETIC)
1137
1138 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1139 JVM_ACC_PRIVATE | \
1140 JVM_ACC_PROTECTED | \
1141 JVM_ACC_STATIC | \
1142 JVM_ACC_FINAL | \
1143 JVM_ACC_VOLATILE | \
1144 JVM_ACC_TRANSIENT | \
1145 JVM_ACC_ENUM | \
1146 JVM_ACC_SYNTHETIC)
1147
1148 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1149 JVM_ACC_PRIVATE | \
1150 JVM_ACC_PROTECTED | \
1151 JVM_ACC_STATIC | \
1152 JVM_ACC_FINAL | \
1153 JVM_ACC_SYNCHRONIZED | \
1154 JVM_ACC_BRIDGE | \
1155 JVM_ACC_VARARGS | \
1156 JVM_ACC_NATIVE | \
1157 JVM_ACC_ABSTRACT | \
1158 JVM_ACC_STRICT | \
1159 JVM_ACC_SYNTHETIC)
1160
1161
1162 /*************************************************************************
1163 PART 3: I/O and Network Support
1164 ************************************************************************/
1165
1166 /*
1167 * Convert a pathname into native format. This function does syntactic
1168 * cleanup, such as removing redundant separator characters. It modifies
1169 * the given pathname string in place.
1170 */
1171 JNIEXPORT char * JNICALL
1172 JVM_NativePath(char *);
1173
1174 /*
1175 * The standard printing functions supported by the Java VM. (Should they
1176 * be renamed to JVM_* in the future?
1177 */
1178
1179 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1180 * respectively, with the following differences:
1181 * - The string written to str is always zero-terminated, also in case of
1182 * truncation (count is too small to hold the result string), unless count
1183 * is 0. In case of truncation count-1 characters are written and '\0'
1184 * appendend.
1185 * - If count is too small to hold the whole string, -1 is returned across
1186 * all platforms. */
1187
1188 JNIEXPORT int
1189 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1190
1191 JNIEXPORT int
1192 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1193
1194 JNIEXPORT int
1195 jio_fprintf(FILE *, const char *fmt, ...);
1196
1197 JNIEXPORT int
1198 jio_vfprintf(FILE *, const char *fmt, va_list args);
1199
1200
1201 JNIEXPORT void * JNICALL
1202 JVM_RawMonitorCreate(void);
1203
1204 JNIEXPORT void JNICALL
1205 JVM_RawMonitorDestroy(void *mon);
1206
1207 JNIEXPORT jint JNICALL
1208 JVM_RawMonitorEnter(void *mon);
1209
1210 JNIEXPORT void JNICALL
1211 JVM_RawMonitorExit(void *mon);
1212
1213 /*
1214 * java.lang.management support
1215 */
1216 JNIEXPORT void* JNICALL
1217 JVM_GetManagement(jint version);
1218
1219 /*
1220 * com.sun.tools.attach.VirtualMachine support
1221 *
1222 * Initialize the agent properties with the properties maintained in the VM.
1223 */
1224 JNIEXPORT jobject JNICALL
1225 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1226
1227 JNIEXPORT jstring JNICALL
1228 JVM_GetTemporaryDirectory(JNIEnv *env);
1229
1230 /* Generics reflection support.
1231 *
1232 * Returns information about the given class's EnclosingMethod
1233 * attribute, if present, or null if the class had no enclosing
1234 * method.
1235 *
1236 * If non-null, the returned array contains three elements. Element 0
1237 * is the java.lang.Class of which the enclosing method is a member,
1238 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1239 * method's name and descriptor, respectively.
1240 */
1241 JNIEXPORT jobjectArray JNICALL
1242 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1243
1244 /*
1245 * This structure is used by the launcher to get the default thread
1246 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1247 * version of 1.1. As it is not supported otherwise, it has been removed
1248 * from jni.h
1249 */
1250 typedef struct JDK1_1InitArgs {
1251 jint version;
1252
1253 char **properties;
1254 jint checkSource;
1255 jint nativeStackSize;
1256 jint javaStackSize;
1257 jint minHeapSize;
1258 jint maxHeapSize;
1259 jint verifyMode;
1260 char *classpath;
1261
1262 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1263 void (JNICALL *exit)(jint code);
1264 void (JNICALL *abort)(void);
1265
1266 jint enableClassGC;
1267 jint enableVerboseGC;
1268 jint disableAsyncGC;
1269 jint verbose;
1270 jboolean debugging;
1271 jint debugPort;
1272 } JDK1_1InitArgs;
1273
1274
1275 #ifdef __cplusplus
1276 } /* extern "C" */
1277
1278 #endif /* __cplusplus */
1279
1280 #endif /* !_JAVASOFT_JVM_H_ */