1 /*
2 * Copyright (c) 1997, 2024, 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 #include "jvm_constants.h"
34 #include "jvm_io.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 jlong JNICALL
91 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
92
93 JNIEXPORT jlong JNICALL
94 JVM_NanoTime(JNIEnv *env, jclass ignored);
95
96 JNIEXPORT jlong JNICALL
97 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
98
99 JNIEXPORT void JNICALL
100 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
101 jobject dst, jint dst_pos, jint length);
102
103 /*
104 * Return an array of all properties as alternating name and value pairs.
105 */
106 JNIEXPORT jobjectArray JNICALL
107 JVM_GetProperties(JNIEnv *env);
108
109 /*
110 * java.lang.Runtime
111 */
112 JNIEXPORT void JNICALL
113 JVM_BeforeHalt();
114
115 JNIEXPORT void JNICALL
116 JVM_Halt(jint code);
117
118 JNIEXPORT void JNICALL
119 JVM_GC(void);
120
121 /* Returns the number of real-time milliseconds that have elapsed since the
122 * least-recently-inspected heap object was last inspected by the garbage
123 * collector.
124 *
125 * For simple stop-the-world collectors this value is just the time
126 * since the most recent collection. For generational collectors it is the
127 * time since the oldest generation was most recently collected. Other
128 * collectors are free to return a pessimistic estimate of the elapsed time, or
129 * simply the time since the last full collection was performed.
130 *
131 * Note that in the presence of reference objects, a given object that is no
132 * longer strongly reachable may have to be inspected multiple times before it
133 * can be reclaimed.
134 */
135 JNIEXPORT jlong JNICALL
136 JVM_MaxObjectInspectionAge(void);
137
138 JNIEXPORT jlong JNICALL
139 JVM_TotalMemory(void);
140
141 JNIEXPORT jlong JNICALL
142 JVM_FreeMemory(void);
143
144 JNIEXPORT jlong JNICALL
145 JVM_MaxMemory(void);
146
147 JNIEXPORT jint JNICALL
148 JVM_ActiveProcessorCount(void);
149
150 JNIEXPORT jboolean JNICALL
151 JVM_IsUseContainerSupport(void);
152
153 JNIEXPORT jboolean JNICALL
154 JVM_IsContainerized(void);
155
156 JNIEXPORT void * JNICALL
157 JVM_LoadZipLibrary();
158
159 JNIEXPORT void * JNICALL
160 JVM_LoadLibrary(const char *name, jboolean throwException);
161
162 JNIEXPORT void JNICALL
163 JVM_UnloadLibrary(void * handle);
164
165 JNIEXPORT void * JNICALL
166 JVM_FindLibraryEntry(void *handle, const char *name);
167
168 JNIEXPORT jboolean JNICALL
169 JVM_IsSupportedJNIVersion(jint version);
170
171 JNIEXPORT jobjectArray JNICALL
172 JVM_GetVmArguments(JNIEnv *env);
173
174 JNIEXPORT jboolean JNICALL
175 JVM_IsPreviewEnabled(void);
176
177 JNIEXPORT jboolean JNICALL
178 JVM_IsContinuationsSupported(void);
179
180 JNIEXPORT jboolean JNICALL
181 JVM_IsForeignLinkerSupported(void);
182
183 JNIEXPORT jboolean JNICALL
184 JVM_IsStaticallyLinked(void);
185
186 JNIEXPORT void JNICALL
187 JVM_InitializeFromArchive(JNIEnv* env, jclass cls);
188
189 JNIEXPORT void JNICALL
190 JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env, jclass caller,
191 jstring interfaceMethodName,
192 jobject factoryType,
193 jobject interfaceMethodType,
194 jobject implementationMember,
195 jobject dynamicMethodType,
196 jclass lambdaProxyClass);
197
198 JNIEXPORT jclass JNICALL
199 JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env, jclass caller,
200 jstring interfaceMethodName,
201 jobject factoryType,
202 jobject interfaceMethodType,
203 jobject implementationMember,
204 jobject dynamicMethodType);
205
206 JNIEXPORT jint JNICALL
207 JVM_GetCDSConfigStatus();
208
209 JNIEXPORT jlong JNICALL
210 JVM_GetRandomSeedForDumping();
211
212 JNIEXPORT void JNICALL
213 JVM_LogLambdaFormInvoker(JNIEnv* env, jstring line);
214
215 JNIEXPORT void JNICALL
216 JVM_DumpClassListToFile(JNIEnv* env, jstring fileName);
217
218 JNIEXPORT void JNICALL
219 JVM_DumpDynamicArchive(JNIEnv* env, jstring archiveName);
220
221 /*
222 * java.lang.Throwable
223 */
224 JNIEXPORT void JNICALL
225 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
226
227 /*
228 * java.lang.StackTraceElement
229 */
230 JNIEXPORT void JNICALL
231 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth);
232
233 JNIEXPORT void JNICALL
234 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
235
236 /*
237 * java.lang.NullPointerException
238 */
239
240 JNIEXPORT jstring JNICALL
241 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
242
243 /*
244 * java.lang.StackWalker
245 */
246 enum {
247 JVM_STACKWALK_CLASS_INFO_ONLY = 0x2,
248 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
249 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
250 };
251
252 JNIEXPORT void JNICALL
253 JVM_ExpandStackFrameInfo(JNIEnv *env, jobject obj);
254
255 JNIEXPORT jobject JNICALL
256 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jint mode,
257 jint skip_frames, jobject contScope, jobject cont,
258 jint buffer_size, jint start_index, jobjectArray frames);
259
260 JNIEXPORT jint JNICALL
261 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jint mode, jlong anchor,
262 jint last_batch_count, jint buffer_size, jint start_index,
263 jobjectArray frames);
264
265 JNIEXPORT void JNICALL
266 JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont);
267
268 /*
269 * java.lang.Thread
270 */
271 JNIEXPORT void JNICALL
272 JVM_StartThread(JNIEnv *env, jobject thread);
273
274 JNIEXPORT void JNICALL
275 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
276
277 JNIEXPORT void JNICALL
278 JVM_Yield(JNIEnv *env, jclass threadClass);
279
280 JNIEXPORT void JNICALL
281 JVM_SleepNanos(JNIEnv *env, jclass threadClass, jlong nanos);
282
283 JNIEXPORT jobject JNICALL
284 JVM_CurrentCarrierThread(JNIEnv *env, jclass threadClass);
285
286 JNIEXPORT jobject JNICALL
287 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
288
289 JNIEXPORT void JNICALL
290 JVM_SetCurrentThread(JNIEnv *env, jobject thisThread, jobject theThread);
291
292 JNIEXPORT void JNICALL
293 JVM_Interrupt(JNIEnv *env, jobject thread);
294
295 JNIEXPORT jboolean JNICALL
296 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
297
298 JNIEXPORT jobject JNICALL
299 JVM_GetStackTrace(JNIEnv *env, jobject thread);
300
301 JNIEXPORT jobjectArray JNICALL
302 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
303
304 JNIEXPORT void JNICALL
305 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
306
307 /* getStackTrace() and getAllStackTraces() method */
308 JNIEXPORT jobjectArray JNICALL
309 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
310
311 JNIEXPORT jobject JNICALL
312 JVM_ScopedValueCache(JNIEnv *env, jclass threadClass);
313
314 JNIEXPORT void JNICALL
315 JVM_SetScopedValueCache(JNIEnv *env, jclass threadClass, jobject theCache);
316
317 JNIEXPORT jobject JNICALL
318 JVM_FindScopedValueBindings(JNIEnv *env, jclass threadClass);
319
320 JNIEXPORT jlong JNICALL
321 JVM_GetNextThreadIdOffset(JNIEnv *env, jclass threadClass);
322
323 /*
324 * jdk.internal.vm.Continuation
325 */
326 JNIEXPORT void JNICALL
327 JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls);
328
329 /*
330 * java.lang.SecurityManager
331 */
332 JNIEXPORT jobjectArray JNICALL
333 JVM_GetClassContext(JNIEnv *env);
334
335 /*
336 * java.lang.Package
337 */
338 JNIEXPORT jstring JNICALL
339 JVM_GetSystemPackage(JNIEnv *env, jstring name);
340
341 JNIEXPORT jobjectArray JNICALL
342 JVM_GetSystemPackages(JNIEnv *env);
343
344 /*
345 * java.lang.ref.Reference
346 */
347 JNIEXPORT jobject JNICALL
348 JVM_GetAndClearReferencePendingList(JNIEnv *env);
349
350 JNIEXPORT jboolean JNICALL
351 JVM_HasReferencePendingList(JNIEnv *env);
352
353 JNIEXPORT void JNICALL
354 JVM_WaitForReferencePendingList(JNIEnv *env);
355
356 JNIEXPORT jboolean JNICALL
357 JVM_ReferenceRefersTo(JNIEnv *env, jobject ref, jobject o);
358
359 JNIEXPORT void JNICALL
360 JVM_ReferenceClear(JNIEnv *env, jobject ref);
361
362 /*
363 * java.lang.ref.PhantomReference
364 */
365 JNIEXPORT jboolean JNICALL
366 JVM_PhantomReferenceRefersTo(JNIEnv *env, jobject ref, jobject o);
367
368 /*
369 * java.io.ObjectInputStream
370 */
371 JNIEXPORT jobject JNICALL
372 JVM_LatestUserDefinedLoader(JNIEnv *env);
373
374 /*
375 * java.lang.reflect.Array
376 */
377 JNIEXPORT jint JNICALL
378 JVM_GetArrayLength(JNIEnv *env, jobject arr);
379
380 JNIEXPORT jobject JNICALL
381 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
382
383 JNIEXPORT jvalue JNICALL
384 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
385
386 JNIEXPORT void JNICALL
387 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
388
389 JNIEXPORT void JNICALL
390 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
391 unsigned char vCode);
392
393 JNIEXPORT jobject JNICALL
394 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
395
396 JNIEXPORT jobject JNICALL
397 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
398
399
400 /*
401 * Returns the immediate caller class of the native method invoking
402 * JVM_GetCallerClass. The Method.invoke and other frames due to
403 * reflection machinery are skipped.
404 *
405 * The caller is expected to be marked with
406 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
407 * error if it is not marked properly.
408 */
409 JNIEXPORT jclass JNICALL
410 JVM_GetCallerClass(JNIEnv *env);
411
412
413 /*
414 * Find primitive classes
415 * utf: class name
416 */
417 JNIEXPORT jclass JNICALL
418 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
419
420
421 /*
422 * Find a class from a boot class loader. Returns null if class not found.
423 */
424 JNIEXPORT jclass JNICALL
425 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
426
427 /*
428 * Find a class from a given class loader. Throws ClassNotFoundException.
429 * name: name of class
430 * init: whether initialization is done
431 * loader: class loader to look up the class. This may not be the same as the caller's
432 * class loader.
433 * caller: initiating class. The initiating class may be null when a security
434 * manager is not installed.
435 */
436 JNIEXPORT jclass JNICALL
437 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
438 jobject loader, jclass caller);
439
440 /*
441 * Find a class from a given class.
442 */
443 JNIEXPORT jclass JNICALL
444 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
445 jclass from);
446
447 /* Find a loaded class cached by the VM */
448 JNIEXPORT jclass JNICALL
449 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
450
451 /* Define a class */
452 JNIEXPORT jclass JNICALL
453 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
454 jsize len, jobject pd);
455
456 /* Define a class with a source (added in JDK1.5) */
457 JNIEXPORT jclass JNICALL
458 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
459 const jbyte *buf, jsize len, jobject pd,
460 const char *source);
461
462 /*
463 * Define a class with the specified lookup class.
464 * lookup: Lookup class
465 * name: the name of the class
466 * buf: class bytes
467 * len: length of class bytes
468 * pd: protection domain
469 * init: initialize the class
470 * flags: properties of the class
471 * classData: private static pre-initialized field; may be null
472 */
473 JNIEXPORT jclass JNICALL
474 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
475 jsize len, jobject pd, jboolean init, int flags, jobject classData);
476
477 /*
478 * Module support functions
479 */
480
481 /*
482 * Define a module with the specified packages and bind the module to the
483 * given class loader.
484 * module: module to define
485 * is_open: specifies if module is open (currently ignored)
486 * version: the module version
487 * location: the module location
488 * packages: array of packages in the module
489 */
490 JNIEXPORT void JNICALL
491 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
492 jstring location, jobjectArray packages);
493
494 /*
495 * Set the boot loader's unnamed module.
496 * module: boot loader's unnamed module
497 */
498 JNIEXPORT void JNICALL
499 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
500
501 /*
502 * Do a qualified export of a package.
503 * from_module: module containing the package to export
504 * package: name of the package to export
505 * to_module: module to export the package to
506 */
507 JNIEXPORT void JNICALL
508 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
509
510 /*
511 * Do an export of a package to all unnamed modules.
512 * from_module: module containing the package to export
513 * package: name of the package to export to all unnamed modules
514 */
515 JNIEXPORT void JNICALL
516 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
517
518 /*
519 * Do an unqualified export of a package.
520 * from_module: module containing the package to export
521 * package: name of the package to export
522 */
523 JNIEXPORT void JNICALL
524 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
525
526 /*
527 * Add a module to the list of modules that a given module can read.
528 * from_module: module requesting read access
529 * source_module: module that from_module wants to read
530 */
531 JNIEXPORT void JNICALL
532 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
533
534 /*
535 * Define all modules that have been stored in the CDS archived heap.
536 * platform_loader: the built-in platform class loader
537 * system_loader: the built-in system class loader
538 */
539 JNIEXPORT void JNICALL
540 JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader);
541
542 /*
543 * Reflection support functions
544 */
545
546 JNIEXPORT jstring JNICALL
547 JVM_InitClassName(JNIEnv *env, jclass cls);
548
549 JNIEXPORT jobjectArray JNICALL
550 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
551
552 JNIEXPORT jboolean JNICALL
553 JVM_IsInterface(JNIEnv *env, jclass cls);
554
555 JNIEXPORT jobject JNICALL
556 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
557
558 JNIEXPORT jboolean JNICALL
559 JVM_IsArrayClass(JNIEnv *env, jclass cls);
560
561 JNIEXPORT jboolean JNICALL
562 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
563
564 JNIEXPORT jboolean JNICALL
565 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
566
567 JNIEXPORT jint JNICALL
568 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
569
570 JNIEXPORT jobjectArray JNICALL
571 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
572
573 JNIEXPORT jclass JNICALL
574 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
575
576 JNIEXPORT jstring JNICALL
577 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
578
579 /* Generics support (JDK 1.5) */
580 JNIEXPORT jstring JNICALL
581 JVM_GetClassSignature(JNIEnv *env, jclass cls);
582
583 /* Annotations support (JDK 1.5) */
584 JNIEXPORT jbyteArray JNICALL
585 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
586
587 /* Type use annotations support (JDK 1.8) */
588
589 JNIEXPORT jbyteArray JNICALL
590 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
591
592 JNIEXPORT jbyteArray JNICALL
593 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
594
595 JNIEXPORT jbyteArray JNICALL
596 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
597
598 /*
599 * New (JDK 1.4) reflection implementation
600 */
601
602 JNIEXPORT jobjectArray JNICALL
603 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
604
605 JNIEXPORT jobjectArray JNICALL
606 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
607
608 JNIEXPORT jobjectArray JNICALL
609 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
610
611
612 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
613 This returns the access flags for the class as specified in the
614 class file rather than searching the InnerClasses attribute (if
615 present) to find the source-level access flags. Only the values of
616 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
617 valid. */
618 JNIEXPORT jint JNICALL
619 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
620
621 /* Nestmates - since JDK 11 */
622
623 JNIEXPORT jboolean JNICALL
624 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
625
626 JNIEXPORT jclass JNICALL
627 JVM_GetNestHost(JNIEnv *env, jclass current);
628
629 JNIEXPORT jobjectArray JNICALL
630 JVM_GetNestMembers(JNIEnv *env, jclass current);
631
632 /* Records - since JDK 16 */
633
634 JNIEXPORT jboolean JNICALL
635 JVM_IsRecord(JNIEnv *env, jclass cls);
636
637 JNIEXPORT jobjectArray JNICALL
638 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
639
640 /* Sealed classes - since JDK 17 */
641
642 JNIEXPORT jobjectArray JNICALL
643 JVM_GetPermittedSubclasses(JNIEnv *env, jclass current);
644
645 /* The following two reflection routines are still needed due to startup time issues */
646 /*
647 * java.lang.reflect.Method
648 */
649 JNIEXPORT jobject JNICALL
650 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
651
652 /*
653 * java.lang.reflect.Constructor
654 */
655 JNIEXPORT jobject JNICALL
656 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
657
658 /*
659 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
660 */
661
662 JNIEXPORT jobject JNICALL
663 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
664
665 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
666 (JNIEnv *env, jobject unused, jobject jcpool);
667
668 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
669 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
670
671 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
672 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
673
674 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
675 (JNIEnv *env, jobject obj, jobject unused, jint index);
676
677 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
678 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
679
680 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
681 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
682
683 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
684 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
685
686 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
687 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
688
689 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
690 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
691
692 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
693 (JNIEnv *env, jobject obj, jobject unused, jint index);
694
695 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
696 (JNIEnv *env, jobject obj, jobject unused, jint index);
697
698 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
699 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
700
701 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
702 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
703
704 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
705 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
706
707 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
708 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
709
710 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
711 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
712
713 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
714 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
715
716 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
717 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
718
719 /*
720 * Parameter reflection
721 */
722
723 JNIEXPORT jobjectArray JNICALL
724 JVM_GetMethodParameters(JNIEnv *env, jobject method);
725
726 /*
727 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
728 * get the value will see a materialized value and not a scalar-replaced
729 * null value.
730 */
731 #define JVM_EnsureMaterializedForStackWalk(env, value) \
732 do {} while(0) // Nothing to do. The fact that the value escaped
733 // through a native method is enough.
734 JNIEXPORT void JNICALL
735 JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value);
736
737 /*
738 * Signal support, used to implement the shutdown sequence. Every VM must
739 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
740 * (^C) and the latter for external termination (kill, system shutdown, etc.).
741 * Other platform-dependent signal values may also be supported.
742 */
743
744 JNIEXPORT void * JNICALL
745 JVM_RegisterSignal(jint sig, void *handler);
746
747 JNIEXPORT jboolean JNICALL
748 JVM_RaiseSignal(jint sig);
749
750 JNIEXPORT jint JNICALL
751 JVM_FindSignal(const char *name);
752
753 /*
754 * Retrieve the assertion directives for the specified class.
755 */
756 JNIEXPORT jboolean JNICALL
757 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
758
759 /*
760 * Retrieve the assertion directives from the VM.
761 */
762 JNIEXPORT jobject JNICALL
763 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
764
765 /*
766 * java.lang.ref.Finalizer
767 */
768 JNIEXPORT void JNICALL
769 JVM_ReportFinalizationComplete(JNIEnv *env, jobject finalizee);
770
771 JNIEXPORT jboolean JNICALL
772 JVM_IsFinalizationEnabled(JNIEnv *env);
773
774 /*************************************************************************
775 PART 2: Support for the Verifier and Class File Format Checker
776 ************************************************************************/
777 /*
778 * Return the class name in UTF format. The result is valid
779 * until JVM_ReleaseUTf is called.
780 *
781 * The caller must treat the string as a constant and not modify it
782 * in any way.
783 */
784 JNIEXPORT const char * JNICALL
785 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
786
787 /*
788 * Returns the constant pool types in the buffer provided by "types."
789 */
790 JNIEXPORT void JNICALL
791 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
792
793 /*
794 * Returns the number of Constant Pool entries.
795 */
796 JNIEXPORT jint JNICALL
797 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
798
799 /*
800 * Returns the number of *declared* fields or methods.
801 */
802 JNIEXPORT jint JNICALL
803 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
804
805 JNIEXPORT jint JNICALL
806 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
807
808 /*
809 * Returns the CP indexes of exceptions raised by a given method.
810 * Places the result in the given buffer.
811 *
812 * The method is identified by method_index.
813 */
814 JNIEXPORT void JNICALL
815 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
816 unsigned short *exceptions);
817 /*
818 * Returns the number of exceptions raised by a given method.
819 * The method is identified by method_index.
820 */
821 JNIEXPORT jint JNICALL
822 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
823
824 /*
825 * Returns the byte code sequence of a given method.
826 * Places the result in the given buffer.
827 *
828 * The method is identified by method_index.
829 */
830 JNIEXPORT void JNICALL
831 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
832 unsigned char *code);
833
834 /*
835 * Returns the length of the byte code sequence of a given method.
836 * The method is identified by method_index.
837 */
838 JNIEXPORT jint JNICALL
839 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
840
841 /*
842 * A structure used to a capture exception table entry in a Java method.
843 */
844 typedef struct {
845 jint start_pc;
846 jint end_pc;
847 jint handler_pc;
848 jint catchType;
849 } JVM_ExceptionTableEntryType;
850
851 /*
852 * Returns the exception table entry at entry_index of a given method.
853 * Places the result in the given buffer.
854 *
855 * The method is identified by method_index.
856 */
857 JNIEXPORT void JNICALL
858 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
859 jint entry_index,
860 JVM_ExceptionTableEntryType *entry);
861
862 /*
863 * Returns the length of the exception table of a given method.
864 * The method is identified by method_index.
865 */
866 JNIEXPORT jint JNICALL
867 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
868
869 /*
870 * Returns the modifiers of a given field.
871 * The field is identified by field_index.
872 */
873 JNIEXPORT jint JNICALL
874 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
875
876 /*
877 * Returns the modifiers of a given method.
878 * The method is identified by method_index.
879 */
880 JNIEXPORT jint JNICALL
881 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
882
883 /*
884 * Returns the number of local variables of a given method.
885 * The method is identified by method_index.
886 */
887 JNIEXPORT jint JNICALL
888 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
889
890 /*
891 * Returns the number of arguments (including this pointer) of a given method.
892 * The method is identified by method_index.
893 */
894 JNIEXPORT jint JNICALL
895 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
896
897 /*
898 * Returns the maximum amount of stack (in words) used by a given method.
899 * The method is identified by method_index.
900 */
901 JNIEXPORT jint JNICALL
902 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
903
904 /*
905 * Is a given method a constructor.
906 * The method is identified by method_index.
907 */
908 JNIEXPORT jboolean JNICALL
909 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
910
911 /*
912 * Is the given method generated by the VM.
913 * The method is identified by method_index.
914 */
915 JNIEXPORT jboolean JNICALL
916 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
917
918 /*
919 * Returns the name of a given method in UTF format.
920 * The result remains valid until JVM_ReleaseUTF is called.
921 *
922 * The caller must treat the string as a constant and not modify it
923 * in any way.
924 */
925 JNIEXPORT const char * JNICALL
926 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
927
928 /*
929 * Returns the signature of a given method in UTF format.
930 * The result remains valid until JVM_ReleaseUTF is called.
931 *
932 * The caller must treat the string as a constant and not modify it
933 * in any way.
934 */
935 JNIEXPORT const char * JNICALL
936 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
937
938 /*
939 * Returns the name of the field referred to at a given constant pool
940 * index.
941 *
942 * The result is in UTF format and remains valid until JVM_ReleaseUTF
943 * is called.
944 *
945 * The caller must treat the string as a constant and not modify it
946 * in any way.
947 */
948 JNIEXPORT const char * JNICALL
949 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
950
951 /*
952 * Returns the name of the method referred to at a given constant pool
953 * index.
954 *
955 * The result is in UTF format and remains valid until JVM_ReleaseUTF
956 * 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_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
963
964 /*
965 * Returns the signature of the method referred to at a given constant pool
966 * index.
967 *
968 * The result is in UTF format and remains valid until JVM_ReleaseUTF
969 * 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_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
976
977 /*
978 * Returns the signature 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_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
989
990 /*
991 * Returns the class name referred to at a given constant pool index.
992 *
993 * The result is in UTF format and remains valid until JVM_ReleaseUTF
994 * is called.
995 *
996 * The caller must treat the string as a constant and not modify it
997 * in any way.
998 */
999 JNIEXPORT const char * JNICALL
1000 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1001
1002 /*
1003 * Returns the class name referred to at a given constant pool index.
1004 *
1005 * The constant pool entry must refer to a CONSTANT_Fieldref.
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_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1015
1016 /*
1017 * Returns the class name referred to at a given constant pool index.
1018 *
1019 * The constant pool entry must refer to CONSTANT_Methodref or
1020 * CONSTANT_InterfaceMethodref.
1021 *
1022 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1023 * is called.
1024 *
1025 * The caller must treat the string as a constant and not modify it
1026 * in any way.
1027 */
1028 JNIEXPORT const char * JNICALL
1029 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1030
1031 /*
1032 * Returns the modifiers of a field in calledClass. The field is
1033 * referred to in class cb at constant pool entry index.
1034 *
1035 * The caller must treat the string as a constant and not modify it
1036 * in any way.
1037 *
1038 * Returns -1 if the field does not exist in calledClass.
1039 */
1040 JNIEXPORT jint JNICALL
1041 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1042
1043 /*
1044 * Returns the modifiers of a method in calledClass. The method is
1045 * referred to in class cb at constant pool entry index.
1046 *
1047 * Returns -1 if the method does not exist in calledClass.
1048 */
1049 JNIEXPORT jint JNICALL
1050 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1051
1052 /*
1053 * Releases the UTF string obtained from the VM.
1054 */
1055 JNIEXPORT void JNICALL
1056 JVM_ReleaseUTF(const char *utf);
1057
1058 /*
1059 * Compare if two classes are in the same package.
1060 */
1061 JNIEXPORT jboolean JNICALL
1062 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1063
1064
1065 /*************************************************************************
1066 PART 3: I/O and Network Support
1067 ************************************************************************/
1068
1069 /*
1070 * Convert a pathname into native format. This function does syntactic
1071 * cleanup, such as removing redundant separator characters. It modifies
1072 * the given pathname string in place.
1073 */
1074 JNIEXPORT char * JNICALL
1075 JVM_NativePath(char *);
1076
1077 JNIEXPORT void * JNICALL
1078 JVM_RawMonitorCreate(void);
1079
1080 JNIEXPORT void JNICALL
1081 JVM_RawMonitorDestroy(void *mon);
1082
1083 JNIEXPORT jint JNICALL
1084 JVM_RawMonitorEnter(void *mon);
1085
1086 JNIEXPORT void JNICALL
1087 JVM_RawMonitorExit(void *mon);
1088
1089 /*
1090 * java.lang.management support
1091 */
1092 JNIEXPORT void* JNICALL
1093 JVM_GetManagement(jint version);
1094
1095 /*
1096 * com.sun.tools.attach.VirtualMachine support
1097 *
1098 * Initialize the agent properties with the properties maintained in the VM.
1099 */
1100 JNIEXPORT jobject JNICALL
1101 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1102
1103 JNIEXPORT jstring JNICALL
1104 JVM_GetTemporaryDirectory(JNIEnv *env);
1105
1106 /* Generics reflection support.
1107 *
1108 * Returns information about the given class's EnclosingMethod
1109 * attribute, if present, or null if the class had no enclosing
1110 * method.
1111 *
1112 * If non-null, the returned array contains three elements. Element 0
1113 * is the java.lang.Class of which the enclosing method is a member,
1114 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1115 * method's name and descriptor, respectively.
1116 */
1117 JNIEXPORT jobjectArray JNICALL
1118 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1119
1120 /*
1121 * Virtual thread support.
1122 */
1123 JNIEXPORT void JNICALL
1124 JVM_VirtualThreadStart(JNIEnv* env, jobject vthread);
1125
1126 JNIEXPORT void JNICALL
1127 JVM_VirtualThreadEnd(JNIEnv* env, jobject vthread);
1128
1129 JNIEXPORT void JNICALL
1130 JVM_VirtualThreadMount(JNIEnv* env, jobject vthread, jboolean hide);
1131
1132 JNIEXPORT void JNICALL
1133 JVM_VirtualThreadUnmount(JNIEnv* env, jobject vthread, jboolean hide);
1134
1135 JNIEXPORT void JNICALL
1136 JVM_VirtualThreadDisableSuspend(JNIEnv* env, jclass clazz, jboolean enter);
1137
1138 JNIEXPORT void JNICALL
1139 JVM_VirtualThreadPinnedEvent(JNIEnv* env, jclass clazz, jstring op);
1140
1141 JNIEXPORT jobject JNICALL
1142 JVM_TakeVirtualThreadListToUnblock(JNIEnv* env, jclass ignored);
1143
1144 /*
1145 * Core reflection support.
1146 */
1147 JNIEXPORT jint JNICALL
1148 JVM_GetClassFileVersion(JNIEnv *env, jclass current);
1149
1150 /*
1151 * Return JNI_TRUE if warnings are printed when agents are dynamically loaded.
1152 */
1153 JNIEXPORT jboolean JNICALL
1154 JVM_PrintWarningAtDynamicAgentLoad(void);
1155
1156 #define JNI_ONLOAD_SYMBOLS {"JNI_OnLoad"}
1157 #define JNI_ONUNLOAD_SYMBOLS {"JNI_OnUnload"}
1158 #define JVM_ONLOAD_SYMBOLS {"JVM_OnLoad"}
1159 #define AGENT_ONLOAD_SYMBOLS {"Agent_OnLoad"}
1160 #define AGENT_ONUNLOAD_SYMBOLS {"Agent_OnUnload"}
1161 #define AGENT_ONATTACH_SYMBOLS {"Agent_OnAttach"}
1162
1163 /*
1164 * This structure is used by the launcher to get the default thread
1165 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1166 * version of 1.1. As it is not supported otherwise, it has been removed
1167 * from jni.h
1168 */
1169 typedef struct JDK1_1InitArgs {
1170 jint version;
1171
1172 char **properties;
1173 jint checkSource;
1174 jint nativeStackSize;
1175 jint javaStackSize;
1176 jint minHeapSize;
1177 jint maxHeapSize;
1178 jint verifyMode;
1179 char *classpath;
1180
1181 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1182 void (JNICALL *exit)(jint code);
1183 void (JNICALL *abort)(void);
1184
1185 jint enableClassGC;
1186 jint enableVerboseGC;
1187 jint disableAsyncGC;
1188 jint verbose;
1189 jboolean debugging;
1190 jint debugPort;
1191 } JDK1_1InitArgs;
1192
1193
1194 #ifdef __cplusplus
1195 } /* extern "C" */
1196
1197 #endif /* __cplusplus */
1198
1199 #endif /* !_JAVASOFT_JVM_H_ */