1 /*
2 * Copyright (c) 1997, 2025, 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_constants.h"
33 #include "jvm_io.h"
34 #include "jvm_md.h"
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 /*
41 * This file contains additional functions exported from the VM.
42 * These functions are complementary to the standard JNI support.
43 * There are three parts to this file:
44 *
45 * First, this file contains the VM-related functions needed by native
46 * libraries in the standard Java API. For example, the java.lang.Object
47 * class needs VM-level functions that wait for and notify monitors.
48 *
49 * Second, (included from jvm_constants.h) constant definitions
50 * needed by the byte code verifier and class file format checker.
51 * These definitions allow the verifier and format checker to be written
52 * in a VM-independent way.
53 *
54 * Third, this file contains various I/O and network operations needed
55 * by the standard Java I/O and network APIs. A part of these APIs,
56 * namely the jio_xxxprintf functions, are included from jvm_io.h.
57 */
58
59
60 /*************************************************************************
61 PART 1: Functions for Native Libraries
62 ************************************************************************/
63 /*
64 * java.lang.Object
65 */
66 JNIEXPORT jint JNICALL
67 JVM_IHashCode(JNIEnv *env, jobject obj);
68
69 JNIEXPORT void JNICALL
70 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
71
72 JNIEXPORT void JNICALL
73 JVM_MonitorNotify(JNIEnv *env, jobject obj);
74
75 JNIEXPORT void JNICALL
76 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
77
78 JNIEXPORT jobject JNICALL
79 JVM_Clone(JNIEnv *env, jobject obj);
80
81 /*
82 * java.lang.String
83 */
84 JNIEXPORT jstring JNICALL
85 JVM_InternString(JNIEnv *env, jstring str);
86
87 /*
88 * java.lang.System
89 */
90 JNIEXPORT jboolean JNICALL
91 JVM_AOTEndRecording(JNIEnv *env);
92
93 JNIEXPORT jlong JNICALL
94 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
95
96 JNIEXPORT jlong JNICALL
97 JVM_NanoTime(JNIEnv *env, jclass ignored);
98
99 JNIEXPORT jlong JNICALL
100 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
101
102 JNIEXPORT void JNICALL
103 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
104 jobject dst, jint dst_pos, jint length);
105
106 /*
107 * Return an array of all properties as alternating name and value pairs.
108 */
109 JNIEXPORT jobjectArray JNICALL
110 JVM_GetProperties(JNIEnv *env);
111
112 /*
113 * java.lang.Runtime
114 */
115 JNIEXPORT void JNICALL
116 JVM_BeforeHalt();
117
118 JNIEXPORT void JNICALL
119 JVM_Halt(jint code);
120
121 JNIEXPORT void JNICALL
122 JVM_GC(void);
123
124 /* Returns the number of real-time milliseconds that have elapsed since the
125 * least-recently-inspected heap object was last inspected by the garbage
126 * collector.
127 *
128 * For simple stop-the-world collectors this value is just the time
129 * since the most recent collection. For generational collectors it is the
130 * time since the oldest generation was most recently collected. Other
131 * collectors are free to return a pessimistic estimate of the elapsed time, or
132 * simply the time since the last full collection was performed.
133 *
134 * Note that in the presence of reference objects, a given object that is no
135 * longer strongly reachable may have to be inspected multiple times before it
136 * can be reclaimed.
137 */
138 JNIEXPORT jlong JNICALL
139 JVM_MaxObjectInspectionAge(void);
140
141 JNIEXPORT jlong JNICALL
142 JVM_TotalMemory(void);
143
144 JNIEXPORT jlong JNICALL
145 JVM_FreeMemory(void);
146
147 JNIEXPORT jlong JNICALL
148 JVM_MaxMemory(void);
149
150 JNIEXPORT jint JNICALL
151 JVM_ActiveProcessorCount(void);
152
153 JNIEXPORT jboolean JNICALL
154 JVM_IsUseContainerSupport(void);
155
156 JNIEXPORT jboolean JNICALL
157 JVM_IsContainerized(void);
158
159 JNIEXPORT void * JNICALL
160 JVM_LoadZipLibrary();
161
162 JNIEXPORT void * JNICALL
163 JVM_LoadLibrary(const char *name, jboolean throwException);
164
165 JNIEXPORT void JNICALL
166 JVM_UnloadLibrary(void * handle);
167
168 JNIEXPORT void * JNICALL
169 JVM_FindLibraryEntry(void *handle, const char *name);
170
171 JNIEXPORT jboolean JNICALL
172 JVM_IsSupportedJNIVersion(jint version);
173
174 JNIEXPORT jobjectArray JNICALL
175 JVM_GetVmArguments(JNIEnv *env);
176
177 JNIEXPORT jboolean JNICALL
178 JVM_IsPreviewEnabled(void);
179
180 JNIEXPORT jboolean JNICALL
181 JVM_IsContinuationsSupported(void);
182
183 JNIEXPORT jboolean JNICALL
184 JVM_IsForeignLinkerSupported(void);
185
186 JNIEXPORT jboolean JNICALL
187 JVM_IsStaticallyLinked(void);
188
189 JNIEXPORT void JNICALL
190 JVM_InitializeFromArchive(JNIEnv* env, jclass cls);
191
192 JNIEXPORT void JNICALL
193 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller,
194 jstring interfaceMethodName,
195 jobject factoryType,
196 jobject interfaceMethodType,
197 jobject implementationMember,
198 jobject dynamicMethodType,
199 jclass lambdaProxyClass);
200
201 JNIEXPORT jclass JNICALL
202 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller,
203 jstring interfaceMethodName,
204 jobject factoryType,
205 jobject interfaceMethodType,
206 jobject implementationMember,
207 jobject dynamicMethodType);
208
209 JNIEXPORT jint JNICALL
210 JVM_GetCDSConfigStatus();
211
212 JNIEXPORT jlong JNICALL
213 JVM_GetRandomSeedForDumping();
214
215 JNIEXPORT void JNICALL
216 JVM_LogLambdaFormInvoker(JNIEnv* env, jstring line);
217
218 JNIEXPORT void JNICALL
219 JVM_DumpClassListToFile(JNIEnv* env, jstring fileName);
220
221 JNIEXPORT void JNICALL
222 JVM_DumpDynamicArchive(JNIEnv* env, jstring archiveName);
223
224 JNIEXPORT jboolean JNICALL
225 JVM_NeedsClassInitBarrierForCDS(JNIEnv* env, jclass cls);
226
227 /*
228 * java.lang.Throwable
229 */
230 JNIEXPORT void JNICALL
231 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
232
233 /*
234 * java.lang.StackTraceElement
235 */
236 JNIEXPORT void JNICALL
237 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth);
238
239 JNIEXPORT void JNICALL
240 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
241
242 /*
243 * java.lang.NullPointerException
244 */
245
246 JNIEXPORT jstring JNICALL
247 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
248
249 /*
250 * java.lang.StackWalker
251 */
252 enum {
253 JVM_STACKWALK_CLASS_INFO_ONLY = 0x2,
254 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
255 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
256 };
257
258 JNIEXPORT void JNICALL
259 JVM_ExpandStackFrameInfo(JNIEnv *env, jobject obj);
260
261 JNIEXPORT jobject JNICALL
262 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jint mode,
263 jint skip_frames, jobject contScope, jobject cont,
264 jint buffer_size, jint start_index, jobjectArray frames);
265
266 JNIEXPORT jint JNICALL
267 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jint mode, jlong anchor,
268 jint last_batch_count, jint buffer_size, jint start_index,
269 jobjectArray frames);
270
271 JNIEXPORT void JNICALL
272 JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont);
273
274 /*
275 * java.lang.Thread
276 */
277 JNIEXPORT void JNICALL
278 JVM_StartThread(JNIEnv *env, jobject thread);
279
280 JNIEXPORT void JNICALL
281 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
282
283 JNIEXPORT void JNICALL
284 JVM_Yield(JNIEnv *env, jclass threadClass);
285
286 JNIEXPORT void JNICALL
287 JVM_SleepNanos(JNIEnv *env, jclass threadClass, jlong nanos);
288
289 JNIEXPORT jobject JNICALL
290 JVM_CurrentCarrierThread(JNIEnv *env, jclass threadClass);
291
292 JNIEXPORT jobject JNICALL
293 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
294
295 JNIEXPORT void JNICALL
296 JVM_SetCurrentThread(JNIEnv *env, jobject thisThread, jobject theThread);
297
298 JNIEXPORT void JNICALL
299 JVM_Interrupt(JNIEnv *env, jobject thread);
300
301 JNIEXPORT jboolean JNICALL
302 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
303
304 JNIEXPORT jobject JNICALL
305 JVM_GetStackTrace(JNIEnv *env, jobject thread);
306
307 JNIEXPORT jobject JNICALL
308 JVM_CreateThreadSnapshot(JNIEnv* env, jobject thread);
309
310 JNIEXPORT jobjectArray JNICALL
311 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
312
313 JNIEXPORT void JNICALL
314 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
315
316 /* getStackTrace() and getAllStackTraces() method */
317 JNIEXPORT jobjectArray JNICALL
318 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
319
320 JNIEXPORT jobject JNICALL
321 JVM_ScopedValueCache(JNIEnv *env, jclass threadClass);
322
323 JNIEXPORT void JNICALL
324 JVM_SetScopedValueCache(JNIEnv *env, jclass threadClass, jobject theCache);
325
326 JNIEXPORT jobject JNICALL
327 JVM_FindScopedValueBindings(JNIEnv *env, jclass threadClass);
328
329 JNIEXPORT jlong JNICALL
330 JVM_GetNextThreadIdOffset(JNIEnv *env, jclass threadClass);
331
332 /*
333 * jdk.internal.vm.Continuation
334 */
335 JNIEXPORT void JNICALL
336 JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls);
337
338 /*
339 * java.lang.Package
340 */
341 JNIEXPORT jstring JNICALL
342 JVM_GetSystemPackage(JNIEnv *env, jstring name);
343
344 JNIEXPORT jobjectArray JNICALL
345 JVM_GetSystemPackages(JNIEnv *env);
346
347 /*
348 * java.lang.ref.Reference
349 */
350 JNIEXPORT jobject JNICALL
351 JVM_GetAndClearReferencePendingList(JNIEnv *env);
352
353 JNIEXPORT jboolean JNICALL
354 JVM_HasReferencePendingList(JNIEnv *env);
355
356 JNIEXPORT void JNICALL
357 JVM_WaitForReferencePendingList(JNIEnv *env);
358
359 JNIEXPORT jobject JNICALL
360 JVM_ReferenceGet(JNIEnv *env, jobject ref);
361
362 JNIEXPORT jboolean JNICALL
363 JVM_ReferenceRefersTo(JNIEnv *env, jobject ref, jobject o);
364
365 JNIEXPORT void JNICALL
366 JVM_ReferenceClear(JNIEnv *env, jobject ref);
367
368 /*
369 * java.lang.ref.PhantomReference
370 */
371 JNIEXPORT jboolean JNICALL
372 JVM_PhantomReferenceRefersTo(JNIEnv *env, jobject ref, jobject o);
373
374 /*
375 * java.io.ObjectInputStream
376 */
377 JNIEXPORT jobject JNICALL
378 JVM_LatestUserDefinedLoader(JNIEnv *env);
379
380 /*
381 * java.lang.reflect.Array
382 */
383 JNIEXPORT jint JNICALL
384 JVM_GetArrayLength(JNIEnv *env, jobject arr);
385
386 JNIEXPORT jobject JNICALL
387 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
388
389 JNIEXPORT jvalue JNICALL
390 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
391
392 JNIEXPORT void JNICALL
393 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
394
395 JNIEXPORT void JNICALL
396 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
397 unsigned char vCode);
398
399 JNIEXPORT jobject JNICALL
400 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
401
402 JNIEXPORT jobject JNICALL
403 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
404
405
406 /*
407 * Returns the immediate caller class of the native method invoking
408 * JVM_GetCallerClass. The Method.invoke and other frames due to
409 * reflection machinery are skipped.
410 *
411 * The caller is expected to be marked with
412 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
413 * error if it is not marked properly.
414 */
415 JNIEXPORT jclass JNICALL
416 JVM_GetCallerClass(JNIEnv *env);
417
418
419 /*
420 * Find primitive classes
421 * utf: class name
422 */
423 JNIEXPORT jclass JNICALL
424 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
425
426
427 /*
428 * Find a class from a boot class loader. Returns null if class not found.
429 */
430 JNIEXPORT jclass JNICALL
431 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
432
433 /*
434 * Find a class from a given class loader. Throws ClassNotFoundException.
435 * name: name of class
436 * init: whether initialization is done
437 * loader: class loader to look up the class. This may not be the same as the caller's
438 * class loader.
439 */
440 JNIEXPORT jclass JNICALL
441 JVM_FindClassFromLoader(JNIEnv *env, const char *name, jboolean init,
442 jobject loader);
443
444 /*
445 * Find a class from a given class.
446 */
447 JNIEXPORT jclass JNICALL
448 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
449 jclass from);
450
451 /* Find a loaded class cached by the VM */
452 JNIEXPORT jclass JNICALL
453 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
454
455 /* Define a class */
456 JNIEXPORT jclass JNICALL
457 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
458 jsize len, jobject pd);
459
460 /* Define a class with a source (added in JDK1.5) */
461 JNIEXPORT jclass JNICALL
462 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
463 const jbyte *buf, jsize len, jobject pd,
464 const char *source);
465
466 /*
467 * Define a class with the specified lookup class.
468 * lookup: Lookup class
469 * name: the name of the class
470 * buf: class bytes
471 * len: length of class bytes
472 * pd: protection domain
473 * init: initialize the class
474 * flags: properties of the class
475 * classData: private static pre-initialized field; may be null
476 */
477 JNIEXPORT jclass JNICALL
478 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
479 jsize len, jobject pd, jboolean init, int flags, jobject classData);
480
481 /*
482 * Module support functions
483 */
484
485 /*
486 * Define a module with the specified packages and bind the module to the
487 * given class loader.
488 * module: module to define
489 * is_open: specifies if module is open (currently ignored)
490 * version: the module version
491 * location: the module location
492 * packages: array of packages in the module
493 */
494 JNIEXPORT void JNICALL
495 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
496 jstring location, jobjectArray packages);
497
498 /*
499 * Set the boot loader's unnamed module.
500 * module: boot loader's unnamed module
501 */
502 JNIEXPORT void JNICALL
503 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
504
505 /*
506 * Do a qualified export of a package.
507 * from_module: module containing the package to export
508 * package: name of the package to export
509 * to_module: module to export the package to
510 */
511 JNIEXPORT void JNICALL
512 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
513
514 /*
515 * Do an export of a package to all unnamed modules.
516 * from_module: module containing the package to export
517 * package: name of the package to export to all unnamed modules
518 */
519 JNIEXPORT void JNICALL
520 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
521
522 /*
523 * Do an unqualified export of a package.
524 * from_module: module containing the package to export
525 * package: name of the package to export
526 */
527 JNIEXPORT void JNICALL
528 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
529
530 /*
531 * Add a module to the list of modules that a given module can read.
532 * from_module: module requesting read access
533 * source_module: module that from_module wants to read
534 */
535 JNIEXPORT void JNICALL
536 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
537
538 /*
539 * Define all modules that have been stored in the CDS archived heap.
540 * platform_loader: the built-in platform class loader
541 * system_loader: the built-in system class loader
542 */
543 JNIEXPORT void JNICALL
544 JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader);
545
546 /*
547 * Reflection support functions
548 */
549
550 JNIEXPORT jstring JNICALL
551 JVM_InitClassName(JNIEnv *env, jclass cls);
552
553 JNIEXPORT jobjectArray JNICALL
554 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
555
556 JNIEXPORT jboolean JNICALL
557 JVM_IsInterface(JNIEnv *env, jclass cls);
558
559 JNIEXPORT jboolean JNICALL
560 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
561
562 JNIEXPORT jobjectArray JNICALL
563 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
564
565 JNIEXPORT jclass JNICALL
566 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
567
568 JNIEXPORT jstring JNICALL
569 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
570
571 /* Generics support (JDK 1.5) */
572 JNIEXPORT jstring JNICALL
573 JVM_GetClassSignature(JNIEnv *env, jclass cls);
574
575 /* Annotations support (JDK 1.5) */
576 JNIEXPORT jbyteArray JNICALL
577 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
578
579 /* Type use annotations support (JDK 1.8) */
580
581 JNIEXPORT jbyteArray JNICALL
582 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
583
584 JNIEXPORT jbyteArray JNICALL
585 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
586
587 JNIEXPORT jbyteArray JNICALL
588 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
589
590 /*
591 * New (JDK 1.4) reflection implementation
592 */
593
594 JNIEXPORT jobjectArray JNICALL
595 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
596
597 JNIEXPORT jobjectArray JNICALL
598 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
599
600 JNIEXPORT jobjectArray JNICALL
601 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
602
603 /* Nestmates - since JDK 11 */
604
605 JNIEXPORT jboolean JNICALL
606 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
607
608 JNIEXPORT jclass JNICALL
609 JVM_GetNestHost(JNIEnv *env, jclass current);
610
611 JNIEXPORT jobjectArray JNICALL
612 JVM_GetNestMembers(JNIEnv *env, jclass current);
613
614 /* Records - since JDK 16 */
615
616 JNIEXPORT jboolean JNICALL
617 JVM_IsRecord(JNIEnv *env, jclass cls);
618
619 JNIEXPORT jobjectArray JNICALL
620 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
621
622 /* Sealed classes - since JDK 17 */
623
624 JNIEXPORT jobjectArray JNICALL
625 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current);
626
627 /* The following two reflection routines are still needed due to startup time issues */
628 /*
629 * java.lang.reflect.Method
630 */
631 JNIEXPORT jobject JNICALL
632 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
633
634 /*
635 * java.lang.reflect.Constructor
636 */
637 JNIEXPORT jobject JNICALL
638 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
639
640 /*
641 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
642 */
643
644 JNIEXPORT jobject JNICALL
645 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
646
647 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
648 (JNIEnv *env, jobject jcpool);
649
650 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
651 (JNIEnv *env, jobject jcpool, jint index);
652
653 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
654 (JNIEnv *env, jobject jcpool, jint index);
655
656 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
657 (JNIEnv *env, jobject jcpool, jint index);
658
659 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
660 (JNIEnv *env, jobject jcpool, jint index);
661
662 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
663 (JNIEnv *env, jobject jcpool, jint index);
664
665 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
666 (JNIEnv *env, jobject jcpool, jint index);
667
668 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
669 (JNIEnv *env, jobject jcpool, jint index);
670
671 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
672 (JNIEnv *env, jobject jcpool, jint index);
673
674 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
675 (JNIEnv *env, jobject jcpool, jint index);
676
677 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
678 (JNIEnv *env, jobject jcpool, jint index);
679
680 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
681 (JNIEnv *env, jobject jcpool, jint index);
682
683 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
684 (JNIEnv *env, jobject jcpool, jint index);
685
686 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
687 (JNIEnv *env, jobject jcpool, jint index);
688
689 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
690 (JNIEnv *env, jobject jcpool, jint index);
691
692 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
693 (JNIEnv *env, jobject jcpool, jint index);
694
695 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
696 (JNIEnv *env, jobject jcpool, jint index);
697
698 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
699 (JNIEnv *env, jobject jcpool, jint index);
700
701 /*
702 * Parameter reflection
703 */
704
705 JNIEXPORT jobjectArray JNICALL
706 JVM_GetMethodParameters(JNIEnv *env, jobject method);
707
708 /*
709 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
710 * get the value will see a materialized value and not a scalar-replaced
711 * null value.
712 */
713 #define JVM_EnsureMaterializedForStackWalk(env, value) \
714 do {} while(0) // Nothing to do. The fact that the value escaped
715 // through a native method is enough.
716 JNIEXPORT void JNICALL
717 JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value);
718
719 /*
720 * Signal support, used to implement the shutdown sequence. Every VM must
721 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
722 * (^C) and the latter for external termination (kill, system shutdown, etc.).
723 * Other platform-dependent signal values may also be supported.
724 */
725
726 JNIEXPORT void * JNICALL
727 JVM_RegisterSignal(jint sig, void *handler);
728
729 JNIEXPORT jboolean JNICALL
730 JVM_RaiseSignal(jint sig);
731
732 JNIEXPORT jint JNICALL
733 JVM_FindSignal(const char *name);
734
735 /*
736 * Retrieve the assertion directives for the specified class.
737 */
738 JNIEXPORT jboolean JNICALL
739 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
740
741 /*
742 * Retrieve the assertion directives from the VM.
743 */
744 JNIEXPORT jobject JNICALL
745 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
746
747 /*
748 * java.lang.ref.Finalizer
749 */
750 JNIEXPORT void JNICALL
751 JVM_ReportFinalizationComplete(JNIEnv *env, jobject finalizee);
752
753 JNIEXPORT jboolean JNICALL
754 JVM_IsFinalizationEnabled(JNIEnv *env);
755
756 /*************************************************************************
757 PART 2: Support for the Verifier and Class File Format Checker
758 ************************************************************************/
759 /*
760 * Return the class name in UTF format. The result is valid
761 * until JVM_ReleaseUTf is called.
762 *
763 * The caller must treat the string as a constant and not modify it
764 * in any way.
765 */
766 JNIEXPORT const char * JNICALL
767 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
768
769 /*
770 * Returns the constant pool types in the buffer provided by "types."
771 */
772 JNIEXPORT void JNICALL
773 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
774
775 /*
776 * Returns the number of Constant Pool entries.
777 */
778 JNIEXPORT jint JNICALL
779 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
780
781 /*
782 * Returns the number of *declared* fields or methods.
783 */
784 JNIEXPORT jint JNICALL
785 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
786
787 JNIEXPORT jint JNICALL
788 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
789
790 /*
791 * Returns the CP indexes of exceptions raised by a given method.
792 * Places the result in the given buffer.
793 *
794 * The method is identified by method_index.
795 */
796 JNIEXPORT void JNICALL
797 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
798 unsigned short *exceptions);
799 /*
800 * Returns the number of exceptions raised by a given method.
801 * The method is identified by method_index.
802 */
803 JNIEXPORT jint JNICALL
804 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
805
806 /*
807 * Returns the byte code sequence of a given method.
808 * Places the result in the given buffer.
809 *
810 * The method is identified by method_index.
811 */
812 JNIEXPORT void JNICALL
813 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
814 unsigned char *code);
815
816 /*
817 * Returns the length of the byte code sequence of a given method.
818 * The method is identified by method_index.
819 */
820 JNIEXPORT jint JNICALL
821 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
822
823 /*
824 * A structure used to a capture exception table entry in a Java method.
825 */
826 typedef struct {
827 jint start_pc;
828 jint end_pc;
829 jint handler_pc;
830 jint catchType;
831 } JVM_ExceptionTableEntryType;
832
833 /*
834 * Returns the exception table entry at entry_index of a given method.
835 * Places the result in the given buffer.
836 *
837 * The method is identified by method_index.
838 */
839 JNIEXPORT void JNICALL
840 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
841 jint entry_index,
842 JVM_ExceptionTableEntryType *entry);
843
844 /*
845 * Returns the length of the exception table of a given method.
846 * The method is identified by method_index.
847 */
848 JNIEXPORT jint JNICALL
849 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
850
851 /*
852 * Returns the modifiers of a given field.
853 * The field is identified by field_index.
854 */
855 JNIEXPORT jint JNICALL
856 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
857
858 /*
859 * Returns the modifiers of a given method.
860 * The method is identified by method_index.
861 */
862 JNIEXPORT jint JNICALL
863 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
864
865 /*
866 * Returns the number of local variables of a given method.
867 * The method is identified by method_index.
868 */
869 JNIEXPORT jint JNICALL
870 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
871
872 /*
873 * Returns the number of arguments (including this pointer) of a given method.
874 * The method is identified by method_index.
875 */
876 JNIEXPORT jint JNICALL
877 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
878
879 /*
880 * Returns the maximum amount of stack (in words) used by a given method.
881 * The method is identified by method_index.
882 */
883 JNIEXPORT jint JNICALL
884 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
885
886 /*
887 * Is a given method a constructor.
888 * The method is identified by method_index.
889 */
890 JNIEXPORT jboolean JNICALL
891 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
892
893 /*
894 * Is the given method generated by the VM.
895 * The method is identified by method_index.
896 */
897 JNIEXPORT jboolean JNICALL
898 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
899
900 /*
901 * Returns the name of a given method in UTF format.
902 * The result remains valid until JVM_ReleaseUTF is called.
903 *
904 * The caller must treat the string as a constant and not modify it
905 * in any way.
906 */
907 JNIEXPORT const char * JNICALL
908 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
909
910 /*
911 * Returns the signature of a given method in UTF format.
912 * The result remains valid until JVM_ReleaseUTF is called.
913 *
914 * The caller must treat the string as a constant and not modify it
915 * in any way.
916 */
917 JNIEXPORT const char * JNICALL
918 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
919
920 /*
921 * Returns the name of the field referred to at a given constant pool
922 * index.
923 *
924 * The result is in UTF format and remains valid until JVM_ReleaseUTF
925 * is called.
926 *
927 * The caller must treat the string as a constant and not modify it
928 * in any way.
929 */
930 JNIEXPORT const char * JNICALL
931 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
932
933 /*
934 * Returns the name of the method referred to at a given constant pool
935 * index.
936 *
937 * The result is in UTF format and remains valid until JVM_ReleaseUTF
938 * is called.
939 *
940 * The caller must treat the string as a constant and not modify it
941 * in any way.
942 */
943 JNIEXPORT const char * JNICALL
944 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
945
946 /*
947 * Returns the signature of the method referred to at a given constant pool
948 * index.
949 *
950 * The result is in UTF format and remains valid until JVM_ReleaseUTF
951 * is called.
952 *
953 * The caller must treat the string as a constant and not modify it
954 * in any way.
955 */
956 JNIEXPORT const char * JNICALL
957 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
958
959 /*
960 * Returns the signature of the field referred to at a given constant pool
961 * index.
962 *
963 * The result is in UTF format and remains valid until JVM_ReleaseUTF
964 * is called.
965 *
966 * The caller must treat the string as a constant and not modify it
967 * in any way.
968 */
969 JNIEXPORT const char * JNICALL
970 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
971
972 /*
973 * Returns the class name referred to at a given constant pool 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_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
983
984 /*
985 * Returns the class name referred to at a given constant pool index.
986 *
987 * The constant pool entry must refer to a CONSTANT_Fieldref.
988 *
989 * The result is in UTF format and remains valid until JVM_ReleaseUTF
990 * is called.
991 *
992 * The caller must treat the string as a constant and not modify it
993 * in any way.
994 */
995 JNIEXPORT const char * JNICALL
996 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
997
998 /*
999 * Returns the class name referred to at a given constant pool index.
1000 *
1001 * The constant pool entry must refer to CONSTANT_Methodref or
1002 * CONSTANT_InterfaceMethodref.
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_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1012
1013 /*
1014 * Returns the modifiers of a field in calledClass. The field is
1015 * referred to in class cb at constant pool entry index.
1016 *
1017 * The caller must treat the string as a constant and not modify it
1018 * in any way.
1019 *
1020 * Returns -1 if the field does not exist in calledClass.
1021 */
1022 JNIEXPORT jint JNICALL
1023 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1024
1025 /*
1026 * Returns the modifiers of a method in calledClass. The method is
1027 * referred to in class cb at constant pool entry index.
1028 *
1029 * Returns -1 if the method does not exist in calledClass.
1030 */
1031 JNIEXPORT jint JNICALL
1032 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1033
1034 /*
1035 * Releases the UTF string obtained from the VM.
1036 */
1037 JNIEXPORT void JNICALL
1038 JVM_ReleaseUTF(const char *utf);
1039
1040 /*
1041 * Compare if two classes are in the same package.
1042 */
1043 JNIEXPORT jboolean JNICALL
1044 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1045
1046
1047 /*************************************************************************
1048 PART 3: I/O and Network Support
1049 ************************************************************************/
1050
1051 /*
1052 * Convert a pathname into native format. This function does syntactic
1053 * cleanup, such as removing redundant separator characters. It modifies
1054 * the given pathname string in place.
1055 */
1056 JNIEXPORT char * JNICALL
1057 JVM_NativePath(char *);
1058
1059 JNIEXPORT void * JNICALL
1060 JVM_RawMonitorCreate(void);
1061
1062 JNIEXPORT void JNICALL
1063 JVM_RawMonitorDestroy(void *mon);
1064
1065 JNIEXPORT jint JNICALL
1066 JVM_RawMonitorEnter(void *mon);
1067
1068 JNIEXPORT void JNICALL
1069 JVM_RawMonitorExit(void *mon);
1070
1071 /*
1072 * java.lang.management support
1073 */
1074 JNIEXPORT void* JNICALL
1075 JVM_GetManagement(jint version);
1076
1077 /*
1078 * com.sun.tools.attach.VirtualMachine support
1079 *
1080 * Initialize the agent properties with the properties maintained in the VM.
1081 */
1082 JNIEXPORT jobject JNICALL
1083 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1084
1085 JNIEXPORT jstring JNICALL
1086 JVM_GetTemporaryDirectory(JNIEnv *env);
1087
1088 /* Generics reflection support.
1089 *
1090 * Returns information about the given class's EnclosingMethod
1091 * attribute, if present, or null if the class had no enclosing
1092 * method.
1093 *
1094 * If non-null, the returned array contains three elements. Element 0
1095 * is the java.lang.Class of which the enclosing method is a member,
1096 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1097 * method's name and descriptor, respectively.
1098 */
1099 JNIEXPORT jobjectArray JNICALL
1100 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1101
1102 /*
1103 * Virtual thread support.
1104 */
1105 JNIEXPORT void JNICALL
1106 JVM_VirtualThreadEndFirstTransition(JNIEnv* env, jobject vthread);
1107
1108 JNIEXPORT void JNICALL
1109 JVM_VirtualThreadStartFinalTransition(JNIEnv* env, jobject vthread);
1110
1111 JNIEXPORT void JNICALL
1112 JVM_VirtualThreadStartTransition(JNIEnv* env, jobject vthread, jboolean is_mount);
1113
1114 JNIEXPORT void JNICALL
1115 JVM_VirtualThreadEndTransition(JNIEnv* env, jobject vthread, jboolean is_mount);
1116
1117 JNIEXPORT void JNICALL
1118 JVM_VirtualThreadDisableSuspend(JNIEnv* env, jclass clazz, jboolean enter);
1119
1120 JNIEXPORT void JNICALL
1121 JVM_VirtualThreadPinnedEvent(JNIEnv* env, jclass clazz, jstring op);
1122
1123 JNIEXPORT jobject JNICALL
1124 JVM_TakeVirtualThreadListToUnblock(JNIEnv* env, jclass ignored);
1125
1126 /*
1127 * Core reflection support.
1128 */
1129 JNIEXPORT jint JNICALL
1130 JVM_GetClassFileVersion(JNIEnv *env, jclass current);
1131
1132 /*
1133 * Return JNI_TRUE if warnings are printed when agents are dynamically loaded.
1134 */
1135 JNIEXPORT jboolean JNICALL
1136 JVM_PrintWarningAtDynamicAgentLoad(void);
1137
1138 /*
1139 * This structure is used by the launcher to get the default thread
1140 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1141 * version of 1.1. As it is not supported otherwise, it has been removed
1142 * from jni.h
1143 */
1144 typedef struct JDK1_1InitArgs {
1145 jint version;
1146
1147 char **properties;
1148 jint checkSource;
1149 jint nativeStackSize;
1150 jint javaStackSize;
1151 jint minHeapSize;
1152 jint maxHeapSize;
1153 jint verifyMode;
1154 char *classpath;
1155
1156 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1157 void (JNICALL *exit)(jint code);
1158 void (JNICALL *abort)(void);
1159
1160 jint enableClassGC;
1161 jint enableVerboseGC;
1162 jint disableAsyncGC;
1163 jint verbose;
1164 jboolean debugging;
1165 jint debugPort;
1166 } JDK1_1InitArgs;
1167
1168
1169 #ifdef __cplusplus
1170 } /* extern "C" */
1171
1172 #endif /* __cplusplus */
1173
1174 #endif /* !_JAVASOFT_JVM_H_ */