1 /*
2 * Copyright (c) 1997, 2019, 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 /*
180 * java.lang.Throwable
181 */
182 JNIEXPORT void JNICALL
183 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
184
185 /*
186 * java.lang.StackTraceElement
187 */
188 JNIEXPORT void JNICALL
189 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
190
191 JNIEXPORT void JNICALL
192 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
193
194 /*
195 * java.lang.NullPointerException
196 */
197
198 JNIEXPORT jstring JNICALL
199 JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
200
201 /*
202 * java.lang.StackWalker
203 */
204 enum {
205 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
206 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
207 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
208 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
209 };
210
211 JNIEXPORT jobject JNICALL
212 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
213 jint skip_frames, jint frame_count, jint start_index,
214 jobjectArray frames);
215
216 JNIEXPORT jint JNICALL
217 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
218 jint frame_count, jint start_index,
219 jobjectArray frames);
220
221 /*
222 * java.lang.Thread
223 */
224 JNIEXPORT void JNICALL
225 JVM_StartThread(JNIEnv *env, jobject thread);
226
227 JNIEXPORT void JNICALL
228 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
229
230 JNIEXPORT jboolean JNICALL
231 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
232
233 JNIEXPORT void JNICALL
234 JVM_SuspendThread(JNIEnv *env, jobject thread);
235
236 JNIEXPORT void JNICALL
237 JVM_ResumeThread(JNIEnv *env, jobject thread);
238
239 JNIEXPORT void JNICALL
240 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
241
242 JNIEXPORT void JNICALL
243 JVM_Yield(JNIEnv *env, jclass threadClass);
244
245 JNIEXPORT void JNICALL
246 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
247
248 JNIEXPORT jobject JNICALL
249 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
250
251 JNIEXPORT void JNICALL
252 JVM_Interrupt(JNIEnv *env, jobject thread);
253
254 JNIEXPORT jboolean JNICALL
255 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
256
257 JNIEXPORT void JNICALL
258 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
259
260 JNIEXPORT jobjectArray JNICALL
261 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
262
263 JNIEXPORT void JNICALL
264 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
265
266 /* getStackTrace() and getAllStackTraces() method */
267 JNIEXPORT jobjectArray JNICALL
268 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
269
270 /*
271 * java.lang.SecurityManager
272 */
273 JNIEXPORT jobjectArray JNICALL
274 JVM_GetClassContext(JNIEnv *env);
275
276 /*
277 * java.lang.Package
278 */
279 JNIEXPORT jstring JNICALL
280 JVM_GetSystemPackage(JNIEnv *env, jstring name);
281
282 JNIEXPORT jobjectArray JNICALL
283 JVM_GetSystemPackages(JNIEnv *env);
284
285 /*
286 * java.lang.ref.Finalizer
287 */
288 JNIEXPORT jboolean JNICALL
289 JVM_GetTsanEnabled(JNIEnv *env);
290
291 /*
292 * java.lang.ref.Reference
293 */
294 JNIEXPORT jobject JNICALL
295 JVM_GetAndClearReferencePendingList(JNIEnv *env);
296
297 JNIEXPORT jboolean JNICALL
298 JVM_HasReferencePendingList(JNIEnv *env);
299
300 JNIEXPORT void JNICALL
301 JVM_WaitForReferencePendingList(JNIEnv *env);
302
303 /*
304 * java.io.ObjectInputStream
305 */
306 JNIEXPORT jobject JNICALL
307 JVM_LatestUserDefinedLoader(JNIEnv *env);
308
309 /*
310 * java.lang.reflect.Array
311 */
312 JNIEXPORT jint JNICALL
313 JVM_GetArrayLength(JNIEnv *env, jobject arr);
314
315 JNIEXPORT jobject JNICALL
316 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
317
318 JNIEXPORT jvalue JNICALL
319 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
320
321 JNIEXPORT void JNICALL
322 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
323
324 JNIEXPORT void JNICALL
325 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
326 unsigned char vCode);
327
328 JNIEXPORT jobject JNICALL
329 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
330
331 JNIEXPORT jobject JNICALL
332 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
333
334
335 /*
336 * Returns the immediate caller class of the native method invoking
337 * JVM_GetCallerClass. The Method.invoke and other frames due to
338 * reflection machinery are skipped.
339 *
340 * The caller is expected to be marked with
341 * jdk.internal.reflect.CallerSensitive. The JVM will throw an
342 * error if it is not marked properly.
343 */
344 JNIEXPORT jclass JNICALL
345 JVM_GetCallerClass(JNIEnv *env);
346
347
348 /*
349 * Find primitive classes
350 * utf: class name
351 */
352 JNIEXPORT jclass JNICALL
353 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
354
355
356 /*
357 * Find a class from a boot class loader. Returns NULL if class not found.
358 */
359 JNIEXPORT jclass JNICALL
360 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
361
362 /*
363 * Find a class from a given class loader. Throws ClassNotFoundException.
364 * name: name of class
365 * init: whether initialization is done
366 * loader: class loader to look up the class. This may not be the same as the caller's
367 * class loader.
368 * caller: initiating class. The initiating class may be null when a security
369 * manager is not installed.
370 */
371 JNIEXPORT jclass JNICALL
372 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
373 jobject loader, jclass caller);
374
375 /*
376 * Find a class from a given class.
377 */
378 JNIEXPORT jclass JNICALL
379 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
380 jclass from);
381
382 /* Find a loaded class cached by the VM */
383 JNIEXPORT jclass JNICALL
384 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
385
386 /* Define a class */
387 JNIEXPORT jclass JNICALL
388 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
389 jsize len, jobject pd);
390
391 /* Define a class with a source (added in JDK1.5) */
392 JNIEXPORT jclass JNICALL
393 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
394 const jbyte *buf, jsize len, jobject pd,
395 const char *source);
396
397 /*
398 * Module support funcions
399 */
400
401 /*
402 * Define a module with the specified packages and bind the module to the
403 * given class loader.
404 * module: module to define
405 * is_open: specifies if module is open (currently ignored)
406 * version: the module version
407 * location: the module location
408 * packages: list of packages in the module
409 * num_packages: number of packages in the module
410 */
411 JNIEXPORT void JNICALL
412 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
413 jstring location, const char* const* packages, jsize num_packages);
414
415 /*
416 * Set the boot loader's unnamed module.
417 * module: boot loader's unnamed module
418 */
419 JNIEXPORT void JNICALL
420 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
421
422 /*
423 * Do a qualified export of a package.
424 * from_module: module containing the package to export
425 * package: name of the package to export
426 * to_module: module to export the package to
427 */
428 JNIEXPORT void JNICALL
429 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
430
431 /*
432 * Do an export of a package to all unnamed modules.
433 * from_module: module containing the package to export
434 * package: name of the package to export to all unnamed modules
435 */
436 JNIEXPORT void JNICALL
437 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
438
439 /*
440 * Do an unqualified export of a package.
441 * from_module: module containing the package to export
442 * package: name of the package to export
443 */
444 JNIEXPORT void JNICALL
445 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
446
447 /*
448 * Add a module to the list of modules that a given module can read.
449 * from_module: module requesting read access
450 * source_module: module that from_module wants to read
451 */
452 JNIEXPORT void JNICALL
453 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
454
455 /*
456 * Reflection support functions
457 */
458
459 JNIEXPORT jstring JNICALL
460 JVM_InitClassName(JNIEnv *env, jclass cls);
461
462 JNIEXPORT jobjectArray JNICALL
463 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
464
465 JNIEXPORT jboolean JNICALL
466 JVM_IsInterface(JNIEnv *env, jclass cls);
467
468 JNIEXPORT jobjectArray JNICALL
469 JVM_GetClassSigners(JNIEnv *env, jclass cls);
470
471 JNIEXPORT void JNICALL
472 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
473
474 JNIEXPORT jobject JNICALL
475 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
476
477 JNIEXPORT jboolean JNICALL
478 JVM_IsArrayClass(JNIEnv *env, jclass cls);
479
480 JNIEXPORT jboolean JNICALL
481 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
482
483 JNIEXPORT jint JNICALL
484 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
485
486 JNIEXPORT jobjectArray JNICALL
487 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
488
489 JNIEXPORT jclass JNICALL
490 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
491
492 JNIEXPORT jstring JNICALL
493 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
494
495 /* Generics support (JDK 1.5) */
496 JNIEXPORT jstring JNICALL
497 JVM_GetClassSignature(JNIEnv *env, jclass cls);
498
499 /* Annotations support (JDK 1.5) */
500 JNIEXPORT jbyteArray JNICALL
501 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
502
503 /* Type use annotations support (JDK 1.8) */
504
505 JNIEXPORT jbyteArray JNICALL
506 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
507
508 JNIEXPORT jbyteArray JNICALL
509 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
510
511 JNIEXPORT jbyteArray JNICALL
512 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
513
514 /*
515 * New (JDK 1.4) reflection implementation
516 */
517
518 JNIEXPORT jobjectArray JNICALL
519 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
520
521 JNIEXPORT jobjectArray JNICALL
522 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
523
524 JNIEXPORT jobjectArray JNICALL
525 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
526
527
528 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
529 This returns the access flags for the class as specified in the
530 class file rather than searching the InnerClasses attribute (if
531 present) to find the source-level access flags. Only the values of
532 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
533 valid. */
534 JNIEXPORT jint JNICALL
535 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
536
537 /* Nestmates - since JDK 11 */
538
539 JNIEXPORT jboolean JNICALL
540 JVM_AreNestMates(JNIEnv *env, jclass current, jclass member);
541
542 JNIEXPORT jclass JNICALL
543 JVM_GetNestHost(JNIEnv *env, jclass current);
544
545 JNIEXPORT jobjectArray JNICALL
546 JVM_GetNestMembers(JNIEnv *env, jclass current);
547
548 /* Records - since JDK 14 */
549
550 JNIEXPORT jboolean JNICALL
551 JVM_IsRecord(JNIEnv *env, jclass cls);
552
553 JNIEXPORT jobjectArray JNICALL
554 JVM_GetRecordComponents(JNIEnv *env, jclass ofClass);
555
556 /* The following two reflection routines are still needed due to startup time issues */
557 /*
558 * java.lang.reflect.Method
559 */
560 JNIEXPORT jobject JNICALL
561 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
562
563 /*
564 * java.lang.reflect.Constructor
565 */
566 JNIEXPORT jobject JNICALL
567 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
568
569 /*
570 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
571 */
572
573 JNIEXPORT jobject JNICALL
574 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
575
576 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
577 (JNIEnv *env, jobject unused, jobject jcpool);
578
579 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
580 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
581
582 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
583 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
584
585 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
586 (JNIEnv *env, jobject obj, jobject unused, jint index);
587
588 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
589 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
590
591 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
592 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
593
594 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
595 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
596
597 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
598 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
599
600 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
601 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
602
603 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
604 (JNIEnv *env, jobject obj, jobject unused, jint index);
605
606 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
607 (JNIEnv *env, jobject obj, jobject unused, jint index);
608
609 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
610 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
611
612 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
613 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
614
615 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
616 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
617
618 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
619 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
620
621 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
622 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
623
624 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
625 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
626
627 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
628 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
629
630 /*
631 * Parameter reflection
632 */
633
634 JNIEXPORT jobjectArray JNICALL
635 JVM_GetMethodParameters(JNIEnv *env, jobject method);
636
637 /*
638 * java.security.*
639 */
640
641 JNIEXPORT jobject JNICALL
642 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
643
644 /*
645 * Ensure that code doing a stackwalk and using javaVFrame::locals() to
646 * get the value will see a materialized value and not a scalar-replaced
647 * null value.
648 */
649 #define JVM_EnsureMaterializedForStackWalk(env, value) \
650 do {} while(0) // Nothing to do. The fact that the value escaped
651 // through a native method is enough.
652
653 JNIEXPORT jobject JNICALL
654 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
655
656 /*
657 * Signal support, used to implement the shutdown sequence. Every VM must
658 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
659 * (^C) and the latter for external termination (kill, system shutdown, etc.).
660 * Other platform-dependent signal values may also be supported.
661 */
662
663 JNIEXPORT void * JNICALL
664 JVM_RegisterSignal(jint sig, void *handler);
665
666 JNIEXPORT jboolean JNICALL
667 JVM_RaiseSignal(jint sig);
668
669 JNIEXPORT jint JNICALL
670 JVM_FindSignal(const char *name);
671
672 /*
673 * Retrieve the assertion directives for the specified class.
674 */
675 JNIEXPORT jboolean JNICALL
676 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
677
678 /*
679 * Retrieve the assertion directives from the VM.
680 */
681 JNIEXPORT jobject JNICALL
682 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
683
684 /*
685 * java.util.concurrent.atomic.AtomicLong
686 */
687 JNIEXPORT jboolean JNICALL
688 JVM_SupportsCX8(void);
689
690 /*
691 * com.sun.dtrace.jsdt support
692 */
693
694 #define JVM_TRACING_DTRACE_VERSION 1
695
696 /*
697 * Structure to pass one probe description to JVM
698 */
699 typedef struct {
700 jmethodID method;
701 jstring function;
702 jstring name;
703 void* reserved[4]; // for future use
704 } JVM_DTraceProbe;
705
706 /**
707 * Encapsulates the stability ratings for a DTrace provider field
708 */
709 typedef struct {
710 jint nameStability;
711 jint dataStability;
712 jint dependencyClass;
713 } JVM_DTraceInterfaceAttributes;
714
715 /*
716 * Structure to pass one provider description to JVM
717 */
718 typedef struct {
719 jstring name;
720 JVM_DTraceProbe* probes;
721 jint probe_count;
722 JVM_DTraceInterfaceAttributes providerAttributes;
723 JVM_DTraceInterfaceAttributes moduleAttributes;
724 JVM_DTraceInterfaceAttributes functionAttributes;
725 JVM_DTraceInterfaceAttributes nameAttributes;
726 JVM_DTraceInterfaceAttributes argsAttributes;
727 void* reserved[4]; // for future use
728 } JVM_DTraceProvider;
729
730 /*
731 * Get the version number the JVM was built with
732 */
733 JNIEXPORT jint JNICALL
734 JVM_DTraceGetVersion(JNIEnv* env);
735
736 /*
737 * Register new probe with given signature, return global handle
738 *
739 * The version passed in is the version that the library code was
740 * built with.
741 */
742 JNIEXPORT jlong JNICALL
743 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
744 jint providers_count, JVM_DTraceProvider* providers);
745
746 /*
747 * Check JSDT probe
748 */
749 JNIEXPORT jboolean JNICALL
750 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
751
752 /*
753 * Destroy custom DOF
754 */
755 JNIEXPORT void JNICALL
756 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
757
758 /*
759 * Check to see if DTrace is supported by OS
760 */
761 JNIEXPORT jboolean JNICALL
762 JVM_DTraceIsSupported(JNIEnv* env);
763
764 /*************************************************************************
765 PART 2: Support for the Verifier and Class File Format Checker
766 ************************************************************************/
767 /*
768 * Return the class name in UTF format. The result is valid
769 * until JVM_ReleaseUTf is called.
770 *
771 * The caller must treat the string as a constant and not modify it
772 * in any way.
773 */
774 JNIEXPORT const char * JNICALL
775 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
776
777 /*
778 * Returns the constant pool types in the buffer provided by "types."
779 */
780 JNIEXPORT void JNICALL
781 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
782
783 /*
784 * Returns the number of Constant Pool entries.
785 */
786 JNIEXPORT jint JNICALL
787 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
788
789 /*
790 * Returns the number of *declared* fields or methods.
791 */
792 JNIEXPORT jint JNICALL
793 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
794
795 JNIEXPORT jint JNICALL
796 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
797
798 /*
799 * Returns the CP indexes of exceptions raised by a given method.
800 * Places the result in the given buffer.
801 *
802 * The method is identified by method_index.
803 */
804 JNIEXPORT void JNICALL
805 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
806 unsigned short *exceptions);
807 /*
808 * Returns the number of exceptions raised by a given method.
809 * The method is identified by method_index.
810 */
811 JNIEXPORT jint JNICALL
812 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
813
814 /*
815 * Returns the byte code sequence of a given method.
816 * Places the result in the given buffer.
817 *
818 * The method is identified by method_index.
819 */
820 JNIEXPORT void JNICALL
821 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
822 unsigned char *code);
823
824 /*
825 * Returns the length of the byte code sequence of a given method.
826 * The method is identified by method_index.
827 */
828 JNIEXPORT jint JNICALL
829 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
830
831 /*
832 * A structure used to a capture exception table entry in a Java method.
833 */
834 typedef struct {
835 jint start_pc;
836 jint end_pc;
837 jint handler_pc;
838 jint catchType;
839 } JVM_ExceptionTableEntryType;
840
841 /*
842 * Returns the exception table entry at entry_index of a given method.
843 * Places the result in the given buffer.
844 *
845 * The method is identified by method_index.
846 */
847 JNIEXPORT void JNICALL
848 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
849 jint entry_index,
850 JVM_ExceptionTableEntryType *entry);
851
852 /*
853 * Returns the length of the exception table of a given method.
854 * The method is identified by method_index.
855 */
856 JNIEXPORT jint JNICALL
857 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
858
859 /*
860 * Returns the modifiers of a given field.
861 * The field is identified by field_index.
862 */
863 JNIEXPORT jint JNICALL
864 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
865
866 /*
867 * Returns the modifiers of a given method.
868 * The method is identified by method_index.
869 */
870 JNIEXPORT jint JNICALL
871 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
872
873 /*
874 * Returns the number of local variables of a given method.
875 * The method is identified by method_index.
876 */
877 JNIEXPORT jint JNICALL
878 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
879
880 /*
881 * Returns the number of arguments (including this pointer) of a given method.
882 * The method is identified by method_index.
883 */
884 JNIEXPORT jint JNICALL
885 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
886
887 /*
888 * Returns the maximum amount of stack (in words) used by a given method.
889 * The method is identified by method_index.
890 */
891 JNIEXPORT jint JNICALL
892 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
893
894 /*
895 * Is a given method a constructor.
896 * The method is identified by method_index.
897 */
898 JNIEXPORT jboolean JNICALL
899 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
900
901 /*
902 * Is the given method generated by the VM.
903 * The method is identified by method_index.
904 */
905 JNIEXPORT jboolean JNICALL
906 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
907
908 /*
909 * Returns the name of a given method in UTF format.
910 * The result remains valid until JVM_ReleaseUTF is called.
911 *
912 * The caller must treat the string as a constant and not modify it
913 * in any way.
914 */
915 JNIEXPORT const char * JNICALL
916 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
917
918 /*
919 * Returns the signature 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_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
927
928 /*
929 * Returns the name of the field referred to at a given constant pool
930 * index.
931 *
932 * The result is in UTF format and remains valid until JVM_ReleaseUTF
933 * is called.
934 *
935 * The caller must treat the string as a constant and not modify it
936 * in any way.
937 */
938 JNIEXPORT const char * JNICALL
939 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
940
941 /*
942 * Returns the name of the method referred to at a given constant pool
943 * index.
944 *
945 * The result is in UTF format and remains valid until JVM_ReleaseUTF
946 * is called.
947 *
948 * The caller must treat the string as a constant and not modify it
949 * in any way.
950 */
951 JNIEXPORT const char * JNICALL
952 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
953
954 /*
955 * Returns the signature of the method referred to at a given constant pool
956 * index.
957 *
958 * The result is in UTF format and remains valid until JVM_ReleaseUTF
959 * is called.
960 *
961 * The caller must treat the string as a constant and not modify it
962 * in any way.
963 */
964 JNIEXPORT const char * JNICALL
965 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
966
967 /*
968 * Returns the signature of the field referred to at a given constant pool
969 * index.
970 *
971 * The result is in UTF format and remains valid until JVM_ReleaseUTF
972 * is called.
973 *
974 * The caller must treat the string as a constant and not modify it
975 * in any way.
976 */
977 JNIEXPORT const char * JNICALL
978 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
979
980 /*
981 * Returns the class name referred to at a given constant pool index.
982 *
983 * The result is in UTF format and remains valid until JVM_ReleaseUTF
984 * is called.
985 *
986 * The caller must treat the string as a constant and not modify it
987 * in any way.
988 */
989 JNIEXPORT const char * JNICALL
990 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
991
992 /*
993 * Returns the class name referred to at a given constant pool index.
994 *
995 * The constant pool entry must refer to a CONSTANT_Fieldref.
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_GetCPFieldClassNameUTF(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 CONSTANT_Methodref or
1010 * CONSTANT_InterfaceMethodref.
1011 *
1012 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1013 * is called.
1014 *
1015 * The caller must treat the string as a constant and not modify it
1016 * in any way.
1017 */
1018 JNIEXPORT const char * JNICALL
1019 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1020
1021 /*
1022 * Returns the modifiers of a field in calledClass. The field is
1023 * referred to in class cb at constant pool entry index.
1024 *
1025 * The caller must treat the string as a constant and not modify it
1026 * in any way.
1027 *
1028 * Returns -1 if the field does not exist in calledClass.
1029 */
1030 JNIEXPORT jint JNICALL
1031 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1032
1033 /*
1034 * Returns the modifiers of a method in calledClass. The method is
1035 * referred to in class cb at constant pool entry index.
1036 *
1037 * Returns -1 if the method does not exist in calledClass.
1038 */
1039 JNIEXPORT jint JNICALL
1040 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1041
1042 /*
1043 * Releases the UTF string obtained from the VM.
1044 */
1045 JNIEXPORT void JNICALL
1046 JVM_ReleaseUTF(const char *utf);
1047
1048 /*
1049 * Compare if two classes are in the same package.
1050 */
1051 JNIEXPORT jboolean JNICALL
1052 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1053
1054 /* Get classfile constants */
1055 #include "classfile_constants.h"
1056
1057 /*
1058 * Support for a VM-independent class format checker.
1059 */
1060 typedef struct {
1061 unsigned long code; /* byte code */
1062 unsigned long excs; /* exceptions */
1063 unsigned long etab; /* catch table */
1064 unsigned long lnum; /* line number */
1065 unsigned long lvar; /* local vars */
1066 } method_size_info;
1067
1068 typedef struct {
1069 unsigned int constants; /* constant pool */
1070 unsigned int fields;
1071 unsigned int methods;
1072 unsigned int interfaces;
1073 unsigned int fields2; /* number of static 2-word fields */
1074 unsigned int innerclasses; /* # of records in InnerClasses attr */
1075
1076 method_size_info clinit; /* memory used in clinit */
1077 method_size_info main; /* used everywhere else */
1078 } class_size_info;
1079
1080 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1081 JVM_ACC_FINAL | \
1082 JVM_ACC_SUPER | \
1083 JVM_ACC_INTERFACE | \
1084 JVM_ACC_ABSTRACT | \
1085 JVM_ACC_ANNOTATION | \
1086 JVM_ACC_ENUM | \
1087 JVM_ACC_SYNTHETIC)
1088
1089 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1090 JVM_ACC_PRIVATE | \
1091 JVM_ACC_PROTECTED | \
1092 JVM_ACC_STATIC | \
1093 JVM_ACC_FINAL | \
1094 JVM_ACC_VOLATILE | \
1095 JVM_ACC_TRANSIENT | \
1096 JVM_ACC_ENUM | \
1097 JVM_ACC_SYNTHETIC)
1098
1099 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1100 JVM_ACC_PRIVATE | \
1101 JVM_ACC_PROTECTED | \
1102 JVM_ACC_STATIC | \
1103 JVM_ACC_FINAL | \
1104 JVM_ACC_SYNCHRONIZED | \
1105 JVM_ACC_BRIDGE | \
1106 JVM_ACC_VARARGS | \
1107 JVM_ACC_NATIVE | \
1108 JVM_ACC_ABSTRACT | \
1109 JVM_ACC_STRICT | \
1110 JVM_ACC_SYNTHETIC)
1111
1112
1113 /*************************************************************************
1114 PART 3: I/O and Network Support
1115 ************************************************************************/
1116
1117 /*
1118 * Convert a pathname into native format. This function does syntactic
1119 * cleanup, such as removing redundant separator characters. It modifies
1120 * the given pathname string in place.
1121 */
1122 JNIEXPORT char * JNICALL
1123 JVM_NativePath(char *);
1124
1125 /*
1126 * The standard printing functions supported by the Java VM. (Should they
1127 * be renamed to JVM_* in the future?
1128 */
1129
1130 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1131 * respectively, with the following differences:
1132 * - The string written to str is always zero-terminated, also in case of
1133 * truncation (count is too small to hold the result string), unless count
1134 * is 0. In case of truncation count-1 characters are written and '\0'
1135 * appendend.
1136 * - If count is too small to hold the whole string, -1 is returned across
1137 * all platforms. */
1138
1139 JNIEXPORT int
1140 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1141
1142 JNIEXPORT int
1143 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1144
1145 JNIEXPORT int
1146 jio_fprintf(FILE *, const char *fmt, ...);
1147
1148 JNIEXPORT int
1149 jio_vfprintf(FILE *, const char *fmt, va_list args);
1150
1151
1152 JNIEXPORT void * JNICALL
1153 JVM_RawMonitorCreate(void);
1154
1155 JNIEXPORT void JNICALL
1156 JVM_RawMonitorDestroy(void *mon);
1157
1158 JNIEXPORT jint JNICALL
1159 JVM_RawMonitorEnter(void *mon);
1160
1161 JNIEXPORT void JNICALL
1162 JVM_RawMonitorExit(void *mon);
1163
1164 /*
1165 * java.lang.management support
1166 */
1167 JNIEXPORT void* JNICALL
1168 JVM_GetManagement(jint version);
1169
1170 /*
1171 * com.sun.tools.attach.VirtualMachine support
1172 *
1173 * Initialize the agent properties with the properties maintained in the VM.
1174 */
1175 JNIEXPORT jobject JNICALL
1176 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1177
1178 JNIEXPORT jstring JNICALL
1179 JVM_GetTemporaryDirectory(JNIEnv *env);
1180
1181 /* Generics reflection support.
1182 *
1183 * Returns information about the given class's EnclosingMethod
1184 * attribute, if present, or null if the class had no enclosing
1185 * method.
1186 *
1187 * If non-null, the returned array contains three elements. Element 0
1188 * is the java.lang.Class of which the enclosing method is a member,
1189 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1190 * method's name and descriptor, respectively.
1191 */
1192 JNIEXPORT jobjectArray JNICALL
1193 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1194
1195 /*
1196 * This structure is used by the launcher to get the default thread
1197 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1198 * version of 1.1. As it is not supported otherwise, it has been removed
1199 * from jni.h
1200 */
1201 typedef struct JDK1_1InitArgs {
1202 jint version;
1203
1204 char **properties;
1205 jint checkSource;
1206 jint nativeStackSize;
1207 jint javaStackSize;
1208 jint minHeapSize;
1209 jint maxHeapSize;
1210 jint verifyMode;
1211 char *classpath;
1212
1213 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1214 void (JNICALL *exit)(jint code);
1215 void (JNICALL *abort)(void);
1216
1217 jint enableClassGC;
1218 jint enableVerboseGC;
1219 jint disableAsyncGC;
1220 jint verbose;
1221 jboolean debugging;
1222 jint debugPort;
1223 } JDK1_1InitArgs;
1224
1225
1226 #ifdef __cplusplus
1227 } /* extern "C" */
1228
1229 #endif /* __cplusplus */
1230
1231 #endif /* !_JAVASOFT_JVM_H_ */