1 /*
2 * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #ifndef _JAVASOFT_JVM_H_
27 #define _JAVASOFT_JVM_H_
28
29 #include <sys/stat.h>
30
31 #include "jni.h"
32 #include "jvm_md.h"
33
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37
38 /*
39 * This file contains additional functions exported from the VM.
40 * These functions are complementary to the standard JNI support.
41 * There are three parts to this file:
42 *
43 * First, this file contains the VM-related functions needed by native
44 * libraries in the standard Java API. For example, the java.lang.Object
45 * class needs VM-level functions that wait for and notify monitors.
46 *
47 * Second, this file contains the functions and constant definitions
48 * needed by the byte code verifier and class file format checker.
49 * These functions allow the verifier and format checker to be written
50 * in a VM-independent way.
51 *
52 * Third, this file contains various I/O and network operations needed
53 * by the standard Java I/O and network APIs.
54 */
55
56 /*
57 * Bump the version number when either of the following happens:
58 *
59 * 1. There is a change in JVM_* functions.
60 *
61 * 2. There is a change in the contract between VM and Java classes.
62 * For example, if the VM relies on a new private field in Thread
63 * class.
64 */
65
66 #define JVM_INTERFACE_VERSION 6
67
68 JNIEXPORT jint JNICALL
69 JVM_GetInterfaceVersion(void);
70
71 /*************************************************************************
72 PART 1: Functions for Native Libraries
73 ************************************************************************/
74 /*
75 * java.lang.Object
76 */
77 JNIEXPORT jint JNICALL
78 JVM_IHashCode(JNIEnv *env, jobject obj);
79
80 JNIEXPORT void JNICALL
81 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
82
83 JNIEXPORT void JNICALL
84 JVM_MonitorNotify(JNIEnv *env, jobject obj);
85
86 JNIEXPORT void JNICALL
87 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
88
89 JNIEXPORT jobject JNICALL
90 JVM_Clone(JNIEnv *env, jobject obj);
91
92 /*
93 * java.lang.String
94 */
95 JNIEXPORT jstring JNICALL
96 JVM_InternString(JNIEnv *env, jstring str);
97
98 /*
99 * java.lang.System
100 */
101 JNIEXPORT jlong JNICALL
102 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
103
104 JNIEXPORT jlong JNICALL
105 JVM_NanoTime(JNIEnv *env, jclass ignored);
106
107 JNIEXPORT jlong JNICALL
108 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
109
110 JNIEXPORT void JNICALL
111 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
112 jobject dst, jint dst_pos, jint length);
113
114 /*
115 * Return an array of all properties as alternating name and value pairs.
116 */
117 JNIEXPORT jobjectArray JNICALL
118 JVM_GetProperties(JNIEnv *env);
119
120 /*
121 * java.lang.Runtime
122 */
123 JNIEXPORT void JNICALL
124 JVM_BeforeHalt();
125
126 JNIEXPORT void JNICALL
127 JVM_Halt(jint code);
128
129 JNIEXPORT void JNICALL
130 JVM_GC(void);
131
132 /* Returns the number of real-time milliseconds that have elapsed since the
133 * least-recently-inspected heap object was last inspected by the garbage
134 * collector.
135 *
136 * For simple stop-the-world collectors this value is just the time
137 * since the most recent collection. For generational collectors it is the
138 * time since the oldest generation was most recently collected. Other
139 * collectors are free to return a pessimistic estimate of the elapsed time, or
140 * simply the time since the last full collection was performed.
141 *
142 * Note that in the presence of reference objects, a given object that is no
143 * longer strongly reachable may have to be inspected multiple times before it
144 * can be reclaimed.
145 */
146 JNIEXPORT jlong JNICALL
147 JVM_MaxObjectInspectionAge(void);
148
149 JNIEXPORT jlong JNICALL
150 JVM_TotalMemory(void);
151
152 JNIEXPORT jlong JNICALL
153 JVM_FreeMemory(void);
154
155 JNIEXPORT jlong JNICALL
156 JVM_MaxMemory(void);
157
158 JNIEXPORT jint JNICALL
159 JVM_ActiveProcessorCount(void);
160
161 JNIEXPORT void * JNICALL
162 JVM_LoadLibrary(const char *name);
163
164 JNIEXPORT void JNICALL
165 JVM_UnloadLibrary(void * handle);
166
167 JNIEXPORT void * JNICALL
168 JVM_FindLibraryEntry(void *handle, const char *name);
169
170 JNIEXPORT jboolean JNICALL
171 JVM_IsSupportedJNIVersion(jint version);
172
173 JNIEXPORT jobjectArray JNICALL
174 JVM_GetVmArguments(JNIEnv *env);
175
176 JNIEXPORT void JNICALL
177 JVM_InitializeFromArchive(JNIEnv* env, jclass cls);
178
179 JNIEXPORT jlong JNICALL
180 JVM_GetRandomSeedForCDSDump();
181
182 /*
183 * java.lang.Throwable
184 */
185 JNIEXPORT void JNICALL
186 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
187
188 /*
189 * java.lang.StackTraceElement
190 */
191 JNIEXPORT void JNICALL
192 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
193
194 JNIEXPORT void JNICALL
195 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
196
197 /*
198 * java.lang.NullPointerException
199 */
200
201 JNIEXPORT jstring JNICALL
202 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
203
204 /*
205 * java.lang.StackWalker
206 */
207 enum {
208 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
209 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
210 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
211 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
212 };
213
214 JNIEXPORT jobject JNICALL
215 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
216 jint skip_frames, jint frame_count, jint start_index,
217 jobjectArray frames);
218
219 JNIEXPORT jint JNICALL
220 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
221 jint frame_count, jint start_index,
222 jobjectArray frames);
223
224 /*
225 * java.lang.Thread
226 */
227 JNIEXPORT void JNICALL
228 JVM_StartThread(JNIEnv *env, jobject thread);
229
230 JNIEXPORT void JNICALL
231 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
232
233 JNIEXPORT jboolean JNICALL
234 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
235
236 JNIEXPORT void JNICALL
237 JVM_SuspendThread(JNIEnv *env, jobject thread);
238
239 JNIEXPORT void JNICALL
240 JVM_ResumeThread(JNIEnv *env, jobject thread);
241
242 JNIEXPORT void JNICALL
243 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
244
245 JNIEXPORT void JNICALL
246 JVM_Yield(JNIEnv *env, jclass threadClass);
247
248 JNIEXPORT void JNICALL
249 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
250
251 JNIEXPORT jobject JNICALL
252 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
253
254 JNIEXPORT void JNICALL
255 JVM_Interrupt(JNIEnv *env, jobject thread);
256
257 JNIEXPORT jboolean JNICALL
258 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
259
260 JNIEXPORT void JNICALL
261 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
262
263 JNIEXPORT jobjectArray JNICALL
264 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
265
266 JNIEXPORT void JNICALL
267 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
268
269 /* getStackTrace() and getAllStackTraces() method */
270 JNIEXPORT jobjectArray JNICALL
271 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
272
273 /*
274 * java.lang.SecurityManager
275 */
276 JNIEXPORT jobjectArray JNICALL
277 JVM_GetClassContext(JNIEnv *env);
278
279 /*
280 * java.lang.Package
281 */
282 JNIEXPORT jstring JNICALL
283 JVM_GetSystemPackage(JNIEnv *env, jstring name);
284
285 JNIEXPORT jobjectArray JNICALL
286 JVM_GetSystemPackages(JNIEnv *env);
287
288 /*
289 * java.lang.ref.Reference
290 */
291 JNIEXPORT jobject JNICALL
292 JVM_GetAndClearReferencePendingList(JNIEnv *env);
293
294 JNIEXPORT jboolean JNICALL
295 JVM_HasReferencePendingList(JNIEnv *env);
296
297 JNIEXPORT void JNICALL
298 JVM_WaitForReferencePendingList(JNIEnv *env);
299
300 /*
301 * java.io.ObjectInputStream
302 */
303 JNIEXPORT jobject JNICALL
304 JVM_LatestUserDefinedLoader(JNIEnv *env);
305
306 /*
307 * java.lang.reflect.Array
308 */
309 JNIEXPORT jint JNICALL
310 JVM_GetArrayLength(JNIEnv *env, jobject arr);
311
312 JNIEXPORT jobject JNICALL
313 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
314
315 JNIEXPORT jvalue JNICALL
316 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
317
318 JNIEXPORT void JNICALL
319 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
320
321 JNIEXPORT void JNICALL
322 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
323 unsigned char vCode);
324
325 JNIEXPORT jobject JNICALL
326 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
327
328 JNIEXPORT jobject JNICALL
329 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
330
331
332 /*
333 * Returns the immediate caller class of the native method invoking
334 * JVM_GetCallerClass. The Method.invoke and other frames due to
335 * reflection machinery are skipped.
336 *
337 * The caller is expected to be marked with
338 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
339 * error if it is not marked properly.
340 */
341 JNIEXPORT jclass JNICALL
342 JVM_GetCallerClass(JNIEnv *env);
343
344
345 /*
346 * Find primitive classes
347 * utf: class name
348 */
349 JNIEXPORT jclass JNICALL
350 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
351
352
353 /*
354 * Find a class from a boot class loader. Returns NULL if class not found.
355 */
356 JNIEXPORT jclass JNICALL
357 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
358
359 /*
360 * Find a class from a given class loader. Throws ClassNotFoundException.
361 * name: name of class
362 * init: whether initialization is done
363 * loader: class loader to look up the class. This may not be the same as the caller's
364 * class loader.
365 * caller: initiating class. The initiating class may be null when a security
366 * manager is not installed.
367 */
368 JNIEXPORT jclass JNICALL
369 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
370 jobject loader, jclass caller);
371
372 /*
373 * Find a class from a given class.
374 */
375 JNIEXPORT jclass JNICALL
376 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
377 jclass from);
378
379 /* Find a loaded class cached by the VM */
380 JNIEXPORT jclass JNICALL
381 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
382
383 /* Define a class */
384 JNIEXPORT jclass JNICALL
385 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
386 jsize len, jobject pd);
387
388 /* Define a class with a source (added in JDK1.5) */
389 JNIEXPORT jclass JNICALL
390 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
391 const jbyte *buf, jsize len, jobject pd,
392 const char *source);
393
394 /*
395 * Define a class with the specified lookup class.
396 * lookup: Lookup class
397 * name: the name of the class
398 * buf: class bytes
399 * len: length of class bytes
400 * pd: protection domain
401 * init: initialize the class
402 * flags: properties of the class
403 * classData: private static pre-initialized field; may be null
404 */
405 JNIEXPORT jclass JNICALL
406 JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
407 jsize len, jobject pd, jboolean init, int flags, jobject classData);
408
409 /*
410 * Module support funcions
411 */
412
413 /*
414 * Define a module with the specified packages and bind the module to the
415 * given class loader.
416 * module: module to define
417 * is_open: specifies if module is open (currently ignored)
418 * version: the module version
419 * location: the module location
420 * packages: array of packages in the module
421 */
422 JNIEXPORT void JNICALL
423 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
424 jstring location, jobjectArray packages);
425
426 /*
427 * Set the boot loader's unnamed module.
428 * module: boot loader's unnamed module
429 */
430 JNIEXPORT void JNICALL
431 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
432
433 /*
434 * Do a qualified export of a package.
435 * from_module: module containing the package to export
436 * package: name of the package to export
437 * to_module: module to export the package to
438 */
439 JNIEXPORT void JNICALL
440 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
441
442 /*
443 * Do an export of a package to all unnamed modules.
444 * from_module: module containing the package to export
445 * package: name of the package to export to all unnamed modules
446 */
447 JNIEXPORT void JNICALL
448 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
449
450 /*
451 * Do an unqualified export of a package.
452 * from_module: module containing the package to export
453 * package: name of the package to export
454 */
455 JNIEXPORT void JNICALL
456 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
457
458 /*
459 * Add a module to the list of modules that a given module can read.
460 * from_module: module requesting read access
461 * source_module: module that from_module wants to read
462 */
463 JNIEXPORT void JNICALL
464 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
465
466 /*
467 * Reflection support functions
468 */
469
470 JNIEXPORT jstring JNICALL
471 JVM_InitClassName(JNIEnv *env, jclass cls);
472
473 JNIEXPORT jobjectArray JNICALL
474 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
475
476 JNIEXPORT jboolean JNICALL
477 JVM_IsInterface(JNIEnv *env, jclass cls);
478
479 JNIEXPORT jobjectArray JNICALL
480 JVM_GetClassSigners(JNIEnv *env, jclass cls);
481
482 JNIEXPORT void JNICALL
483 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
484
485 JNIEXPORT jobject JNICALL
486 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
487
488 JNIEXPORT jboolean JNICALL
489 JVM_IsArrayClass(JNIEnv *env, jclass cls);
490
491 JNIEXPORT jboolean JNICALL
492 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
493
494 JNIEXPORT jboolean JNICALL
495 JVM_IsHiddenClass(JNIEnv *env, jclass cls);
496
497 JNIEXPORT jint JNICALL
498 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
499
500 JNIEXPORT jobjectArray JNICALL
501 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
502
503 JNIEXPORT jclass JNICALL
504 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
505
506 JNIEXPORT jstring JNICALL
507 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
508
509 /* Generics support (JDK 1.5) */
510 JNIEXPORT jstring JNICALL
511 JVM_GetClassSignature(JNIEnv *env, jclass cls);
512
513 /* Annotations support (JDK 1.5) */
514 JNIEXPORT jbyteArray JNICALL
515 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
516
517 /* Type use annotations support (JDK 1.8) */
518
519 JNIEXPORT jbyteArray JNICALL
520 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
521
522 JNIEXPORT jbyteArray JNICALL
523 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
524
525 JNIEXPORT jbyteArray JNICALL
526 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
527
528 /*
529 * New (JDK 1.4) reflection implementation
530 */
531
532 JNIEXPORT jobjectArray JNICALL
533 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
534
535 JNIEXPORT jobjectArray JNICALL
536 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
537
538 JNIEXPORT jobjectArray JNICALL
539 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
540
541
542 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
543 This returns the access flags for the class as specified in the
544 class file rather than searching the InnerClasses attribute (if
545 present) to find the source-level access flags. Only the values of
546 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
547 valid. */
548 JNIEXPORT jint JNICALL
549 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
550
551 /* Nestmates - since JDK 11 */
552
553 JNIEXPORT jboolean JNICALL
554 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
555
556 JNIEXPORT jclass JNICALL
557 JVM_GetNestHost(JNIEnv *env, jclass current);
558
559 JNIEXPORT jobjectArray JNICALL
560 JVM_GetNestMembers(JNIEnv *env, jclass current);
561
562 /* Records - since JDK 14 */
563
564 JNIEXPORT jboolean JNICALL
565 JVM_IsRecord(JNIEnv *env, jclass cls);
566
567 JNIEXPORT jobjectArray JNICALL
568 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
569
570 /* The following two reflection routines are still needed due to startup time issues */
571 /*
572 * java.lang.reflect.Method
573 */
574 JNIEXPORT jobject JNICALL
575 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
576
577 /*
578 * java.lang.reflect.Constructor
579 */
580 JNIEXPORT jobject JNICALL
581 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
582
583 /*
584 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
585 */
586
587 JNIEXPORT jobject JNICALL
588 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
589
590 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
591 (JNIEnv *env, jobject unused, jobject jcpool);
592
593 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
594 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
595
596 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
597 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
598
599 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
600 (JNIEnv *env, jobject obj, jobject unused, jint index);
601
602 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
603 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
604
605 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
606 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
607
608 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
609 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
610
611 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
612 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
613
614 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
615 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
616
617 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
618 (JNIEnv *env, jobject obj, jobject unused, jint index);
619
620 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
621 (JNIEnv *env, jobject obj, jobject unused, jint index);
622
623 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
624 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
625
626 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
627 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
628
629 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
630 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
631
632 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
633 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
634
635 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
636 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
637
638 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
639 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
640
641 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
642 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
643
644 /*
645 * Parameter reflection
646 */
647
648 JNIEXPORT jobjectArray JNICALL
649 JVM_GetMethodParameters(JNIEnv *env, jobject method);
650
651 /*
652 * java.security.*
653 */
654
655 JNIEXPORT jobject JNICALL
656 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
657
658 /*
659 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
660 * get the value will see a materialized value and not a scalar-replaced
661 * null value.
662 */
663 #define JVM_EnsureMaterializedForStackWalk(env, value) \
664 do {} while(0) // Nothing to do. The fact that the value escaped
665 // through a native method is enough.
666
667 JNIEXPORT jobject JNICALL
668 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
669
670 /*
671 * Signal support, used to implement the shutdown sequence. Every VM must
672 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
673 * (^C) and the latter for external termination (kill, system shutdown, etc.).
674 * Other platform-dependent signal values may also be supported.
675 */
676
677 JNIEXPORT void * JNICALL
678 JVM_RegisterSignal(jint sig, void *handler);
679
680 JNIEXPORT jboolean JNICALL
681 JVM_RaiseSignal(jint sig);
682
683 JNIEXPORT jint JNICALL
684 JVM_FindSignal(const char *name);
685
686 /*
687 * Retrieve the assertion directives for the specified class.
688 */
689 JNIEXPORT jboolean JNICALL
690 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
691
692 /*
693 * Retrieve the assertion directives from the VM.
694 */
695 JNIEXPORT jobject JNICALL
696 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
697
698 /*
699 * java.util.concurrent.atomic.AtomicLong
700 */
701 JNIEXPORT jboolean JNICALL
702 JVM_SupportsCX8(void);
703
704 /*
705 * com.sun.dtrace.jsdt support
706 */
707
708 #define JVM_TRACING_DTRACE_VERSION 1
709
710 /*
711 * Structure to pass one probe description to JVM
712 */
713 typedef struct {
714 jmethodID method;
715 jstring function;
716 jstring name;
717 void* reserved[4]; // for future use
718 } JVM_DTraceProbe;
719
720 /**
721 * Encapsulates the stability ratings for a DTrace provider field
722 */
723 typedef struct {
724 jint nameStability;
725 jint dataStability;
726 jint dependencyClass;
727 } JVM_DTraceInterfaceAttributes;
728
729 /*
730 * Structure to pass one provider description to JVM
731 */
732 typedef struct {
733 jstring name;
734 JVM_DTraceProbe* probes;
735 jint probe_count;
736 JVM_DTraceInterfaceAttributes providerAttributes;
737 JVM_DTraceInterfaceAttributes moduleAttributes;
738 JVM_DTraceInterfaceAttributes functionAttributes;
739 JVM_DTraceInterfaceAttributes nameAttributes;
740 JVM_DTraceInterfaceAttributes argsAttributes;
741 void* reserved[4]; // for future use
742 } JVM_DTraceProvider;
743
744 /*
745 * Get the version number the JVM was built with
746 */
747 JNIEXPORT jint JNICALL
748 JVM_DTraceGetVersion(JNIEnv* env);
749
750 /*
751 * Register new probe with given signature, return global handle
752 *
753 * The version passed in is the version that the library code was
754 * built with.
755 */
756 JNIEXPORT jlong JNICALL
757 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
758 jint providers_count, JVM_DTraceProvider* providers);
759
760 /*
761 * Check JSDT probe
762 */
763 JNIEXPORT jboolean JNICALL
764 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
765
766 /*
767 * Destroy custom DOF
768 */
769 JNIEXPORT void JNICALL
770 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
771
772 /*
773 * Check to see if DTrace is supported by OS
774 */
775 JNIEXPORT jboolean JNICALL
776 JVM_DTraceIsSupported(JNIEnv* env);
777
778 /*************************************************************************
779 PART 2: Support for the Verifier and Class File Format Checker
780 ************************************************************************/
781 /*
782 * Return the class name in UTF format. The result is valid
783 * until JVM_ReleaseUTf is called.
784 *
785 * The caller must treat the string as a constant and not modify it
786 * in any way.
787 */
788 JNIEXPORT const char * JNICALL
789 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
790
791 /*
792 * Returns the constant pool types in the buffer provided by "types."
793 */
794 JNIEXPORT void JNICALL
795 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
796
797 /*
798 * Returns the number of Constant Pool entries.
799 */
800 JNIEXPORT jint JNICALL
801 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
802
803 /*
804 * Returns the number of *declared* fields or methods.
805 */
806 JNIEXPORT jint JNICALL
807 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
808
809 JNIEXPORT jint JNICALL
810 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
811
812 /*
813 * Returns the CP indexes of exceptions raised by a given method.
814 * Places the result in the given buffer.
815 *
816 * The method is identified by method_index.
817 */
818 JNIEXPORT void JNICALL
819 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
820 unsigned short *exceptions);
821 /*
822 * Returns the number of exceptions raised by a given method.
823 * The method is identified by method_index.
824 */
825 JNIEXPORT jint JNICALL
826 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
827
828 /*
829 * Returns the byte code sequence of a given method.
830 * Places the result in the given buffer.
831 *
832 * The method is identified by method_index.
833 */
834 JNIEXPORT void JNICALL
835 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
836 unsigned char *code);
837
838 /*
839 * Returns the length of the byte code sequence of a given method.
840 * The method is identified by method_index.
841 */
842 JNIEXPORT jint JNICALL
843 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
844
845 /*
846 * A structure used to a capture exception table entry in a Java method.
847 */
848 typedef struct {
849 jint start_pc;
850 jint end_pc;
851 jint handler_pc;
852 jint catchType;
853 } JVM_ExceptionTableEntryType;
854
855 /*
856 * Returns the exception table entry at entry_index of a given method.
857 * Places the result in the given buffer.
858 *
859 * The method is identified by method_index.
860 */
861 JNIEXPORT void JNICALL
862 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
863 jint entry_index,
864 JVM_ExceptionTableEntryType *entry);
865
866 /*
867 * Returns the length of the exception table of a given method.
868 * The method is identified by method_index.
869 */
870 JNIEXPORT jint JNICALL
871 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
872
873 /*
874 * Returns the modifiers of a given field.
875 * The field is identified by field_index.
876 */
877 JNIEXPORT jint JNICALL
878 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
879
880 /*
881 * Returns the modifiers of a given method.
882 * The method is identified by method_index.
883 */
884 JNIEXPORT jint JNICALL
885 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
886
887 /*
888 * Returns the number of local variables of a given method.
889 * The method is identified by method_index.
890 */
891 JNIEXPORT jint JNICALL
892 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
893
894 /*
895 * Returns the number of arguments (including this pointer) of a given method.
896 * The method is identified by method_index.
897 */
898 JNIEXPORT jint JNICALL
899 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
900
901 /*
902 * Returns the maximum amount of stack (in words) used by a given method.
903 * The method is identified by method_index.
904 */
905 JNIEXPORT jint JNICALL
906 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
907
908 /*
909 * Is a given method a constructor.
910 * The method is identified by method_index.
911 */
912 JNIEXPORT jboolean JNICALL
913 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
914
915 /*
916 * Is the given method generated by the VM.
917 * The method is identified by method_index.
918 */
919 JNIEXPORT jboolean JNICALL
920 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
921
922 /*
923 * Returns the name of a given method in UTF format.
924 * The result remains valid until JVM_ReleaseUTF is called.
925 *
926 * The caller must treat the string as a constant and not modify it
927 * in any way.
928 */
929 JNIEXPORT const char * JNICALL
930 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
931
932 /*
933 * Returns the signature of a given method in UTF format.
934 * The result remains valid until JVM_ReleaseUTF is called.
935 *
936 * The caller must treat the string as a constant and not modify it
937 * in any way.
938 */
939 JNIEXPORT const char * JNICALL
940 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
941
942 /*
943 * Returns the name of the field referred to at a given constant pool
944 * index.
945 *
946 * The result is in UTF format and remains valid until JVM_ReleaseUTF
947 * is called.
948 *
949 * The caller must treat the string as a constant and not modify it
950 * in any way.
951 */
952 JNIEXPORT const char * JNICALL
953 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
954
955 /*
956 * Returns the name of the method referred to at a given constant pool
957 * index.
958 *
959 * The result is in UTF format and remains valid until JVM_ReleaseUTF
960 * is called.
961 *
962 * The caller must treat the string as a constant and not modify it
963 * in any way.
964 */
965 JNIEXPORT const char * JNICALL
966 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
967
968 /*
969 * Returns the signature of the method referred to at a given constant pool
970 * index.
971 *
972 * The result is in UTF format and remains valid until JVM_ReleaseUTF
973 * is called.
974 *
975 * The caller must treat the string as a constant and not modify it
976 * in any way.
977 */
978 JNIEXPORT const char * JNICALL
979 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
980
981 /*
982 * Returns the signature of the field referred to at a given constant pool
983 * index.
984 *
985 * The result is in UTF format and remains valid until JVM_ReleaseUTF
986 * is called.
987 *
988 * The caller must treat the string as a constant and not modify it
989 * in any way.
990 */
991 JNIEXPORT const char * JNICALL
992 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
993
994 /*
995 * Returns the class name referred to at a given constant pool index.
996 *
997 * The result is in UTF format and remains valid until JVM_ReleaseUTF
998 * is called.
999 *
1000 * The caller must treat the string as a constant and not modify it
1001 * in any way.
1002 */
1003 JNIEXPORT const char * JNICALL
1004 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
1005
1006 /*
1007 * Returns the class name referred to at a given constant pool index.
1008 *
1009 * The constant pool entry must refer to a CONSTANT_Fieldref.
1010 *
1011 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1012 * is called.
1013 *
1014 * The caller must treat the string as a constant and not modify it
1015 * in any way.
1016 */
1017 JNIEXPORT const char * JNICALL
1018 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1019
1020 /*
1021 * Returns the class name referred to at a given constant pool index.
1022 *
1023 * The constant pool entry must refer to CONSTANT_Methodref or
1024 * CONSTANT_InterfaceMethodref.
1025 *
1026 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1027 * is called.
1028 *
1029 * The caller must treat the string as a constant and not modify it
1030 * in any way.
1031 */
1032 JNIEXPORT const char * JNICALL
1033 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1034
1035 /*
1036 * Returns the modifiers of a field in calledClass. The field is
1037 * referred to in class cb at constant pool entry index.
1038 *
1039 * The caller must treat the string as a constant and not modify it
1040 * in any way.
1041 *
1042 * Returns -1 if the field does not exist in calledClass.
1043 */
1044 JNIEXPORT jint JNICALL
1045 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1046
1047 /*
1048 * Returns the modifiers of a method in calledClass. The method is
1049 * referred to in class cb at constant pool entry index.
1050 *
1051 * Returns -1 if the method does not exist in calledClass.
1052 */
1053 JNIEXPORT jint JNICALL
1054 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1055
1056 /*
1057 * Releases the UTF string obtained from the VM.
1058 */
1059 JNIEXPORT void JNICALL
1060 JVM_ReleaseUTF(const char *utf);
1061
1062 /*
1063 * Compare if two classes are in the same package.
1064 */
1065 JNIEXPORT jboolean JNICALL
1066 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1067
1068 /* Get classfile constants */
1069 #include "classfile_constants.h"
1070
1071 /*
1072 * Support for a VM-independent class format checker.
1073 */
1074 typedef struct {
1075 unsigned long code; /* byte code */
1076 unsigned long excs; /* exceptions */
1077 unsigned long etab; /* catch table */
1078 unsigned long lnum; /* line number */
1079 unsigned long lvar; /* local vars */
1080 } method_size_info;
1081
1082 typedef struct {
1083 unsigned int constants; /* constant pool */
1084 unsigned int fields;
1085 unsigned int methods;
1086 unsigned int interfaces;
1087 unsigned int fields2; /* number of static 2-word fields */
1088 unsigned int innerclasses; /* # of records in InnerClasses attr */
1089
1090 method_size_info clinit; /* memory used in clinit */
1091 method_size_info main; /* used everywhere else */
1092 } class_size_info;
1093
1094 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1095 JVM_ACC_FINAL | \
1096 JVM_ACC_SUPER | \
1097 JVM_ACC_INTERFACE | \
1098 JVM_ACC_ABSTRACT | \
1099 JVM_ACC_ANNOTATION | \
1100 JVM_ACC_ENUM | \
1101 JVM_ACC_SYNTHETIC)
1102
1103 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1104 JVM_ACC_PRIVATE | \
1105 JVM_ACC_PROTECTED | \
1106 JVM_ACC_STATIC | \
1107 JVM_ACC_FINAL | \
1108 JVM_ACC_VOLATILE | \
1109 JVM_ACC_TRANSIENT | \
1110 JVM_ACC_ENUM | \
1111 JVM_ACC_SYNTHETIC)
1112
1113 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1114 JVM_ACC_PRIVATE | \
1115 JVM_ACC_PROTECTED | \
1116 JVM_ACC_STATIC | \
1117 JVM_ACC_FINAL | \
1118 JVM_ACC_SYNCHRONIZED | \
1119 JVM_ACC_BRIDGE | \
1120 JVM_ACC_VARARGS | \
1121 JVM_ACC_NATIVE | \
1122 JVM_ACC_ABSTRACT | \
1123 JVM_ACC_STRICT | \
1124 JVM_ACC_SYNTHETIC)
1125
1126
1127 /*************************************************************************
1128 PART 3: I/O and Network Support
1129 ************************************************************************/
1130
1131 /*
1132 * Convert a pathname into native format. This function does syntactic
1133 * cleanup, such as removing redundant separator characters. It modifies
1134 * the given pathname string in place.
1135 */
1136 JNIEXPORT char * JNICALL
1137 JVM_NativePath(char *);
1138
1139 /*
1140 * The standard printing functions supported by the Java VM. (Should they
1141 * be renamed to JVM_* in the future?
1142 */
1143
1144 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1145 * respectively, with the following differences:
1146 * - The string written to str is always zero-terminated, also in case of
1147 * truncation (count is too small to hold the result string), unless count
1148 * is 0. In case of truncation count-1 characters are written and '\0'
1149 * appendend.
1150 * - If count is too small to hold the whole string, -1 is returned across
1151 * all platforms. */
1152
1153 JNIEXPORT int
1154 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1155
1156 JNIEXPORT int
1157 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1158
1159 JNIEXPORT int
1160 jio_fprintf(FILE *, const char *fmt, ...);
1161
1162 JNIEXPORT int
1163 jio_vfprintf(FILE *, const char *fmt, va_list args);
1164
1165
1166 JNIEXPORT void * JNICALL
1167 JVM_RawMonitorCreate(void);
1168
1169 JNIEXPORT void JNICALL
1170 JVM_RawMonitorDestroy(void *mon);
1171
1172 JNIEXPORT jint JNICALL
1173 JVM_RawMonitorEnter(void *mon);
1174
1175 JNIEXPORT void JNICALL
1176 JVM_RawMonitorExit(void *mon);
1177
1178 /*
1179 * java.lang.management support
1180 */
1181 JNIEXPORT void* JNICALL
1182 JVM_GetManagement(jint version);
1183
1184 /*
1185 * com.sun.tools.attach.VirtualMachine support
1186 *
1187 * Initialize the agent properties with the properties maintained in the VM.
1188 */
1189 JNIEXPORT jobject JNICALL
1190 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1191
1192 JNIEXPORT jstring JNICALL
1193 JVM_GetTemporaryDirectory(JNIEnv *env);
1194
1195 /* Generics reflection support.
1196 *
1197 * Returns information about the given class's EnclosingMethod
1198 * attribute, if present, or null if the class had no enclosing
1199 * method.
1200 *
1201 * If non-null, the returned array contains three elements. Element 0
1202 * is the java.lang.Class of which the enclosing method is a member,
1203 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1204 * method's name and descriptor, respectively.
1205 */
1206 JNIEXPORT jobjectArray JNICALL
1207 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1208
1209 /*
1210 * This structure is used by the launcher to get the default thread
1211 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1212 * version of 1.1. As it is not supported otherwise, it has been removed
1213 * from jni.h
1214 */
1215 typedef struct JDK1_1InitArgs {
1216 jint version;
1217
1218 char **properties;
1219 jint checkSource;
1220 jint nativeStackSize;
1221 jint javaStackSize;
1222 jint minHeapSize;
1223 jint maxHeapSize;
1224 jint verifyMode;
1225 char *classpath;
1226
1227 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1228 void (JNICALL *exit)(jint code);
1229 void (JNICALL *abort)(void);
1230
1231 jint enableClassGC;
1232 jint enableVerboseGC;
1233 jint disableAsyncGC;
1234 jint verbose;
1235 jboolean debugging;
1236 jint debugPort;
1237 } JDK1_1InitArgs;
1238
1239
1240 #ifdef __cplusplus
1241 } /* extern "C" */
1242
1243 #endif /* __cplusplus */
1244
1245 #endif /* !_JAVASOFT_JVM_H_ */