1 /*
2 * Copyright (c) 1997, 2016, 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 5
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 JNIEXPORT jobject JNICALL
115 JVM_InitProperties(JNIEnv *env, jobject p);
116
117
118 /*
119 * java.lang.Runtime
120 */
121 JNIEXPORT void JNICALL
122 JVM_Halt(jint code);
123
124 JNIEXPORT void JNICALL
125 JVM_GC(void);
126
127 /* Returns the number of real-time milliseconds that have elapsed since the
128 * least-recently-inspected heap object was last inspected by the garbage
129 * collector.
130 *
131 * For simple stop-the-world collectors this value is just the time
132 * since the most recent collection. For generational collectors it is the
133 * time since the oldest generation was most recently collected. Other
134 * collectors are free to return a pessimistic estimate of the elapsed time, or
135 * simply the time since the last full collection was performed.
136 *
137 * Note that in the presence of reference objects, a given object that is no
138 * longer strongly reachable may have to be inspected multiple times before it
139 * can be reclaimed.
140 */
141 JNIEXPORT jlong JNICALL
142 JVM_MaxObjectInspectionAge(void);
143
144 JNIEXPORT jlong JNICALL
145 JVM_TotalMemory(void);
146
147 JNIEXPORT jlong JNICALL
148 JVM_FreeMemory(void);
149
150 JNIEXPORT jlong JNICALL
151 JVM_MaxMemory(void);
152
153 JNIEXPORT jint JNICALL
154 JVM_ActiveProcessorCount(void);
155
156 JNIEXPORT void * JNICALL
157 JVM_LoadLibrary(const char *name);
158
159 JNIEXPORT void JNICALL
160 JVM_UnloadLibrary(void * handle);
161
162 JNIEXPORT void * JNICALL
163 JVM_FindLibraryEntry(void *handle, const char *name);
164
165 JNIEXPORT jboolean JNICALL
166 JVM_IsSupportedJNIVersion(jint version);
167
168 /*
169 * java.lang.Throwable
170 */
171 JNIEXPORT void JNICALL
172 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
173
174 JNIEXPORT void JNICALL
175 JVM_GetStackTraceElements(JNIEnv *env, jobject throwable, jobjectArray elements);
176
177 /*
178 * java.lang.StackWalker
179 */
180 enum {
181 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
182 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
183 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
184 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
185 };
186
187 JNIEXPORT jobject JNICALL
188 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
189 jint skip_frames, jint frame_count, jint start_index,
190 jobjectArray frames);
191
192 JNIEXPORT jint JNICALL
193 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
194 jint frame_count, jint start_index,
195 jobjectArray frames);
196
197 JNIEXPORT void JNICALL
198 JVM_ToStackTraceElement(JNIEnv* env, jobject frame, jobject stackElement);
199
200 JNIEXPORT jobjectArray JNICALL
201 JVM_GetVmArguments(JNIEnv *env);
202
203 /*
204 * java.lang.Thread
205 */
206 JNIEXPORT void JNICALL
207 JVM_StartThread(JNIEnv *env, jobject thread);
208
209 JNIEXPORT void JNICALL
210 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
211
212 JNIEXPORT jboolean JNICALL
213 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
214
215 JNIEXPORT void JNICALL
216 JVM_SuspendThread(JNIEnv *env, jobject thread);
217
218 JNIEXPORT void JNICALL
219 JVM_ResumeThread(JNIEnv *env, jobject thread);
220
221 JNIEXPORT void JNICALL
222 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
223
224 JNIEXPORT void JNICALL
225 JVM_Yield(JNIEnv *env, jclass threadClass);
226
227 JNIEXPORT void JNICALL
228 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
229
230 JNIEXPORT jobject JNICALL
231 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
232
233 JNIEXPORT jint JNICALL
234 JVM_CountStackFrames(JNIEnv *env, jobject thread);
235
236 JNIEXPORT void JNICALL
237 JVM_Interrupt(JNIEnv *env, jobject thread);
238
239 JNIEXPORT jboolean JNICALL
240 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
241
242 JNIEXPORT jboolean JNICALL
243 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
244
245 JNIEXPORT void JNICALL
246 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
247
248 JNIEXPORT jobjectArray JNICALL
249 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
250
251 JNIEXPORT void JNICALL
252 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
253
254 /* getStackTrace() and getAllStackTraces() method */
255 JNIEXPORT jobjectArray JNICALL
256 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
257
258 /*
259 * java.lang.SecurityManager
260 */
261 JNIEXPORT jclass JNICALL
262 JVM_CurrentLoadedClass(JNIEnv *env);
263
264 JNIEXPORT jobject JNICALL
265 JVM_CurrentClassLoader(JNIEnv *env);
266
267 JNIEXPORT jobjectArray JNICALL
268 JVM_GetClassContext(JNIEnv *env);
269
270 JNIEXPORT jint JNICALL
271 JVM_ClassDepth(JNIEnv *env, jstring name);
272
273 JNIEXPORT jint JNICALL
274 JVM_ClassLoaderDepth(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.Reference
287 */
288 JNIEXPORT jobject JNICALL
289 JVM_GetAndClearReferencePendingList(JNIEnv *env);
290
291 JNIEXPORT jboolean JNICALL
292 JVM_HasReferencePendingList(JNIEnv *env);
293
294 JNIEXPORT void JNICALL
295 JVM_WaitForReferencePendingList(JNIEnv *env);
296
297 /*
298 * java.io.ObjectInputStream
299 */
300 JNIEXPORT jobject JNICALL
301 JVM_LatestUserDefinedLoader(JNIEnv *env);
302
303 /*
304 * java.lang.reflect.Array
305 */
306 JNIEXPORT jint JNICALL
307 JVM_GetArrayLength(JNIEnv *env, jobject arr);
308
309 JNIEXPORT jobject JNICALL
310 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
311
312 JNIEXPORT jvalue JNICALL
313 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
314
315 JNIEXPORT void JNICALL
316 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
317
318 JNIEXPORT void JNICALL
319 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
320 unsigned char vCode);
321
322 JNIEXPORT jobject JNICALL
323 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
324
325 JNIEXPORT jobject JNICALL
326 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
327
328 /*
329 * java.lang.Class and java.lang.ClassLoader
330 */
331
332 #define JVM_CALLER_DEPTH -1
333
334 /*
335 * Returns the immediate caller class of the native method invoking
336 * JVM_GetCallerClass. The Method.invoke and other frames due to
337 * reflection machinery are skipped.
338 *
339 * The depth parameter must be -1 (JVM_DEPTH). The caller is expected
340 * to be marked with sun.reflect.CallerSensitive. The JVM will throw
341 * an error if it is not marked propertly.
342 */
343 JNIEXPORT jclass JNICALL
344 JVM_GetCallerClass(JNIEnv *env, int depth);
345
346
347 /*
348 * Find primitive classes
349 * utf: class name
350 */
351 JNIEXPORT jclass JNICALL
352 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
353
354
355 /*
356 * Find a class from a boot class loader. Returns NULL if class not found.
357 */
358 JNIEXPORT jclass JNICALL
359 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
360
361 /*
362 * Find a class from a given class loader. Throws ClassNotFoundException.
363 * name: name of class
364 * init: whether initialization is done
365 * loader: class loader to look up the class. This may not be the same as the caller's
366 * class loader.
367 * caller: initiating class. The initiating class may be null when a security
368 * manager is not installed.
369 */
370 JNIEXPORT jclass JNICALL
371 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
372 jobject loader, jclass caller);
373
374 /*
375 * Find a class from a given class.
376 */
377 JNIEXPORT jclass JNICALL
378 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
379 jclass from);
380
381 /* Find a loaded class cached by the VM */
382 JNIEXPORT jclass JNICALL
383 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
384
385 /* Define a class */
386 JNIEXPORT jclass JNICALL
387 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
388 jsize len, jobject pd);
389
390 /* Define a class with a source (added in JDK1.5) */
391 JNIEXPORT jclass JNICALL
392 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
393 const jbyte *buf, jsize len, jobject pd,
394 const char *source);
395
396 /*
397 * Module support funcions
398 */
399
400 JNIEXPORT void JNICALL
401 JVM_DefineModule(JNIEnv *env, jobject module, jstring version, jstring location,
402 jobjectArray packages);
403
404 JNIEXPORT void JNICALL
405 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
406
407 JNIEXPORT void JNICALL
408 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject to_module);
409
410 JNIEXPORT jboolean JNICALL
411 JVM_CanReadModule(JNIEnv *env, jobject asking_module, jobject source_module);
412
413 JNIEXPORT void JNICALL
414 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
415
416 JNIEXPORT void JNICALL
417 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
418
419 JNIEXPORT void JNICALL
420 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
421
422 JNIEXPORT jboolean JNICALL
423 JVM_IsExportedToModule(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
424
425 JNIEXPORT void JNICALL
426 JVM_AddModulePackage(JNIEnv* env, jobject module, jstring package);
427
428 JNIEXPORT jobject JNICALL
429 JVM_GetModuleByPackageName(JNIEnv *env, jobject cl, jstring pkg);
430
431 /*
432 * Reflection support functions
433 */
434
435 JNIEXPORT jstring JNICALL
436 JVM_GetClassName(JNIEnv *env, jclass cls);
437
438 JNIEXPORT jobjectArray JNICALL
439 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
440
441 JNIEXPORT jboolean JNICALL
442 JVM_IsInterface(JNIEnv *env, jclass cls);
443
444 JNIEXPORT jobjectArray JNICALL
445 JVM_GetClassSigners(JNIEnv *env, jclass cls);
446
447 JNIEXPORT void JNICALL
448 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
449
450 JNIEXPORT jobject JNICALL
451 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
452
453 JNIEXPORT jboolean JNICALL
454 JVM_IsArrayClass(JNIEnv *env, jclass cls);
455
456 JNIEXPORT jboolean JNICALL
457 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
458
459 JNIEXPORT jint JNICALL
460 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
461
462 JNIEXPORT jobjectArray JNICALL
463 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
464
465 JNIEXPORT jclass JNICALL
466 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
467
468 JNIEXPORT jstring JNICALL
469 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
470
471 /* Generics support (JDK 1.5) */
472 JNIEXPORT jstring JNICALL
473 JVM_GetClassSignature(JNIEnv *env, jclass cls);
474
475 /* Annotations support (JDK 1.5) */
476 JNIEXPORT jbyteArray JNICALL
477 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
478
479 /* Type use annotations support (JDK 1.8) */
480
481 JNIEXPORT jbyteArray JNICALL
482 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
483
484 JNIEXPORT jbyteArray JNICALL
485 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
486
487 JNIEXPORT jbyteArray JNICALL
488 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
489
490 /*
491 * New (JDK 1.4) reflection implementation
492 */
493
494 JNIEXPORT jobjectArray JNICALL
495 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
496
497 JNIEXPORT jobjectArray JNICALL
498 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
499
500 JNIEXPORT jobjectArray JNICALL
501 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
502
503 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
504 This returns the access flags for the class as specified in the
505 class file rather than searching the InnerClasses attribute (if
506 present) to find the source-level access flags. Only the values of
507 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
508 valid. */
509 JNIEXPORT jint JNICALL
510 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
511
512 /* The following two reflection routines are still needed due to startup time issues */
513 /*
514 * java.lang.reflect.Method
515 */
516 JNIEXPORT jobject JNICALL
517 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
518
519 /*
520 * java.lang.reflect.Constructor
521 */
522 JNIEXPORT jobject JNICALL
523 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
524
525 /*
526 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
527 */
528
529 JNIEXPORT jobject JNICALL
530 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
531
532 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
533 (JNIEnv *env, jobject unused, jobject jcpool);
534
535 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
536 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
537
538 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
539 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
540
541 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
542 (JNIEnv *env, jobject obj, jobject unused, jint index);
543
544 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
545 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
546
547 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
548 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
549
550 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
551 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
552
553 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
554 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
555
556 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
557 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
558
559 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
560 (JNIEnv *env, jobject obj, jobject unused, jint index);
561
562 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
563 (JNIEnv *env, jobject obj, jobject unused, jint index);
564
565 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
566 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
567
568 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
569 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
570
571 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
572 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
573
574 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
575 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
576
577 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
578 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
579
580 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
581 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
582
583 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
584 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
585
586 /*
587 * Parameter reflection
588 */
589
590 JNIEXPORT jobjectArray JNICALL
591 JVM_GetMethodParameters(JNIEnv *env, jobject method);
592
593 /*
594 * java.security.*
595 */
596
597 JNIEXPORT jobject JNICALL
598 JVM_DoPrivileged(JNIEnv *env, jclass cls,
599 jobject action, jobject context, jboolean wrapException);
600
601 JNIEXPORT jobject JNICALL
602 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
603
604 JNIEXPORT jobject JNICALL
605 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
606
607 /*
608 * Signal support, used to implement the shutdown sequence. Every VM must
609 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
610 * (^C) and the latter for external termination (kill, system shutdown, etc.).
611 * Other platform-dependent signal values may also be supported.
612 */
613
614 JNIEXPORT void * JNICALL
615 JVM_RegisterSignal(jint sig, void *handler);
616
617 JNIEXPORT jboolean JNICALL
618 JVM_RaiseSignal(jint sig);
619
620 JNIEXPORT jint JNICALL
621 JVM_FindSignal(const char *name);
622
623 /*
624 * Retrieve the assertion directives for the specified class.
625 */
626 JNIEXPORT jboolean JNICALL
627 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
628
629 /*
630 * Retrieve the assertion directives from the VM.
631 */
632 JNIEXPORT jobject JNICALL
633 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
634
635 /*
636 * java.util.concurrent.atomic.AtomicLong
637 */
638 JNIEXPORT jboolean JNICALL
639 JVM_SupportsCX8(void);
640
641 /*
642 * com.sun.dtrace.jsdt support
643 */
644
645 #define JVM_TRACING_DTRACE_VERSION 1
646
647 /*
648 * Structure to pass one probe description to JVM
649 */
650 typedef struct {
651 jmethodID method;
652 jstring function;
653 jstring name;
654 void* reserved[4]; // for future use
655 } JVM_DTraceProbe;
656
657 /**
658 * Encapsulates the stability ratings for a DTrace provider field
659 */
660 typedef struct {
661 jint nameStability;
662 jint dataStability;
663 jint dependencyClass;
664 } JVM_DTraceInterfaceAttributes;
665
666 /*
667 * Structure to pass one provider description to JVM
668 */
669 typedef struct {
670 jstring name;
671 JVM_DTraceProbe* probes;
672 jint probe_count;
673 JVM_DTraceInterfaceAttributes providerAttributes;
674 JVM_DTraceInterfaceAttributes moduleAttributes;
675 JVM_DTraceInterfaceAttributes functionAttributes;
676 JVM_DTraceInterfaceAttributes nameAttributes;
677 JVM_DTraceInterfaceAttributes argsAttributes;
678 void* reserved[4]; // for future use
679 } JVM_DTraceProvider;
680
681 /*
682 * Get the version number the JVM was built with
683 */
684 JNIEXPORT jint JNICALL
685 JVM_DTraceGetVersion(JNIEnv* env);
686
687 /*
688 * Register new probe with given signature, return global handle
689 *
690 * The version passed in is the version that the library code was
691 * built with.
692 */
693 JNIEXPORT jlong JNICALL
694 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
695 jint providers_count, JVM_DTraceProvider* providers);
696
697 /*
698 * Check JSDT probe
699 */
700 JNIEXPORT jboolean JNICALL
701 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
702
703 /*
704 * Destroy custom DOF
705 */
706 JNIEXPORT void JNICALL
707 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
708
709 /*
710 * Check to see if DTrace is supported by OS
711 */
712 JNIEXPORT jboolean JNICALL
713 JVM_DTraceIsSupported(JNIEnv* env);
714
715 /*************************************************************************
716 PART 2: Support for the Verifier and Class File Format Checker
717 ************************************************************************/
718 /*
719 * Return the class name in UTF format. The result is valid
720 * until JVM_ReleaseUTf is called.
721 *
722 * The caller must treat the string as a constant and not modify it
723 * in any way.
724 */
725 JNIEXPORT const char * JNICALL
726 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
727
728 /*
729 * Returns the constant pool types in the buffer provided by "types."
730 */
731 JNIEXPORT void JNICALL
732 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
733
734 /*
735 * Returns the number of Constant Pool entries.
736 */
737 JNIEXPORT jint JNICALL
738 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
739
740 /*
741 * Returns the number of *declared* fields or methods.
742 */
743 JNIEXPORT jint JNICALL
744 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
745
746 JNIEXPORT jint JNICALL
747 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
748
749 /*
750 * Returns the CP indexes of exceptions raised by a given method.
751 * Places the result in the given buffer.
752 *
753 * The method is identified by method_index.
754 */
755 JNIEXPORT void JNICALL
756 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
757 unsigned short *exceptions);
758 /*
759 * Returns the number of exceptions raised by a given method.
760 * The method is identified by method_index.
761 */
762 JNIEXPORT jint JNICALL
763 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
764
765 /*
766 * Returns the byte code sequence of a given method.
767 * Places the result in the given buffer.
768 *
769 * The method is identified by method_index.
770 */
771 JNIEXPORT void JNICALL
772 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
773 unsigned char *code);
774
775 /*
776 * Returns the length of the byte code sequence of a given method.
777 * The method is identified by method_index.
778 */
779 JNIEXPORT jint JNICALL
780 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
781
782 /*
783 * A structure used to a capture exception table entry in a Java method.
784 */
785 typedef struct {
786 jint start_pc;
787 jint end_pc;
788 jint handler_pc;
789 jint catchType;
790 } JVM_ExceptionTableEntryType;
791
792 /*
793 * Returns the exception table entry at entry_index of a given method.
794 * Places the result in the given buffer.
795 *
796 * The method is identified by method_index.
797 */
798 JNIEXPORT void JNICALL
799 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
800 jint entry_index,
801 JVM_ExceptionTableEntryType *entry);
802
803 /*
804 * Returns the length of the exception table of a given method.
805 * The method is identified by method_index.
806 */
807 JNIEXPORT jint JNICALL
808 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
809
810 /*
811 * Returns the modifiers of a given field.
812 * The field is identified by field_index.
813 */
814 JNIEXPORT jint JNICALL
815 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
816
817 /*
818 * Returns the modifiers of a given method.
819 * The method is identified by method_index.
820 */
821 JNIEXPORT jint JNICALL
822 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
823
824 /*
825 * Returns the number of local variables of a given method.
826 * The method is identified by method_index.
827 */
828 JNIEXPORT jint JNICALL
829 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
830
831 /*
832 * Returns the number of arguments (including this pointer) of a given method.
833 * The method is identified by method_index.
834 */
835 JNIEXPORT jint JNICALL
836 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
837
838 /*
839 * Returns the maximum amount of stack (in words) used by a given method.
840 * The method is identified by method_index.
841 */
842 JNIEXPORT jint JNICALL
843 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
844
845 /*
846 * Is a given method a constructor.
847 * The method is identified by method_index.
848 */
849 JNIEXPORT jboolean JNICALL
850 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
851
852 /*
853 * Is the given method generated by the VM.
854 * The method is identified by method_index.
855 */
856 JNIEXPORT jboolean JNICALL
857 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
858
859 /*
860 * Returns the name of a given method in UTF format.
861 * The result remains valid until JVM_ReleaseUTF is called.
862 *
863 * The caller must treat the string as a constant and not modify it
864 * in any way.
865 */
866 JNIEXPORT const char * JNICALL
867 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
868
869 /*
870 * Returns the signature of a given method in UTF format.
871 * The result remains valid until JVM_ReleaseUTF is called.
872 *
873 * The caller must treat the string as a constant and not modify it
874 * in any way.
875 */
876 JNIEXPORT const char * JNICALL
877 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
878
879 /*
880 * Returns the name of the field referred to at a given constant pool
881 * index.
882 *
883 * The result is in UTF format and remains valid until JVM_ReleaseUTF
884 * is called.
885 *
886 * The caller must treat the string as a constant and not modify it
887 * in any way.
888 */
889 JNIEXPORT const char * JNICALL
890 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
891
892 /*
893 * Returns the name of the method referred to at a given constant pool
894 * index.
895 *
896 * The result is in UTF format and remains valid until JVM_ReleaseUTF
897 * is called.
898 *
899 * The caller must treat the string as a constant and not modify it
900 * in any way.
901 */
902 JNIEXPORT const char * JNICALL
903 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
904
905 /*
906 * Returns the signature of the method referred to at a given constant pool
907 * index.
908 *
909 * The result is in UTF format and remains valid until JVM_ReleaseUTF
910 * 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_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
917
918 /*
919 * Returns the signature of the field referred to at a given constant pool
920 * index.
921 *
922 * The result is in UTF format and remains valid until JVM_ReleaseUTF
923 * is called.
924 *
925 * The caller must treat the string as a constant and not modify it
926 * in any way.
927 */
928 JNIEXPORT const char * JNICALL
929 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
930
931 /*
932 * Returns the class name referred to at a given constant pool index.
933 *
934 * The result is in UTF format and remains valid until JVM_ReleaseUTF
935 * is called.
936 *
937 * The caller must treat the string as a constant and not modify it
938 * in any way.
939 */
940 JNIEXPORT const char * JNICALL
941 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
942
943 /*
944 * Returns the class name referred to at a given constant pool index.
945 *
946 * The constant pool entry must refer to a CONSTANT_Fieldref.
947 *
948 * The result is in UTF format and remains valid until JVM_ReleaseUTF
949 * is called.
950 *
951 * The caller must treat the string as a constant and not modify it
952 * in any way.
953 */
954 JNIEXPORT const char * JNICALL
955 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
956
957 /*
958 * Returns the class name referred to at a given constant pool index.
959 *
960 * The constant pool entry must refer to CONSTANT_Methodref or
961 * CONSTANT_InterfaceMethodref.
962 *
963 * The result is in UTF format and remains valid until JVM_ReleaseUTF
964 * is called.
965 *
966 * The caller must treat the string as a constant and not modify it
967 * in any way.
968 */
969 JNIEXPORT const char * JNICALL
970 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
971
972 /*
973 * Returns the modifiers of a field in calledClass. The field is
974 * referred to in class cb at constant pool entry index.
975 *
976 * The caller must treat the string as a constant and not modify it
977 * in any way.
978 *
979 * Returns -1 if the field does not exist in calledClass.
980 */
981 JNIEXPORT jint JNICALL
982 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
983
984 /*
985 * Returns the modifiers of a method in calledClass. The method is
986 * referred to in class cb at constant pool entry index.
987 *
988 * Returns -1 if the method does not exist in calledClass.
989 */
990 JNIEXPORT jint JNICALL
991 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
992
993 /*
994 * Releases the UTF string obtained from the VM.
995 */
996 JNIEXPORT void JNICALL
997 JVM_ReleaseUTF(const char *utf);
998
999 /*
1000 * Compare if two classes are in the same package.
1001 */
1002 JNIEXPORT jboolean JNICALL
1003 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1004
1005 /* Get classfile constants */
1006 #include "classfile_constants.h"
1007
1008 /*
1009 * A function defined by the byte-code verifier and called by the VM.
1010 * This is not a function implemented in the VM.
1011 *
1012 * Returns JNI_FALSE if verification fails. A detailed error message
1013 * will be places in msg_buf, whose length is specified by buf_len.
1014 */
1015 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1016 jclass cb,
1017 char * msg_buf,
1018 jint buf_len);
1019
1020
1021 /*
1022 * Support for a VM-independent class format checker.
1023 */
1024 typedef struct {
1025 unsigned long code; /* byte code */
1026 unsigned long excs; /* exceptions */
1027 unsigned long etab; /* catch table */
1028 unsigned long lnum; /* line number */
1029 unsigned long lvar; /* local vars */
1030 } method_size_info;
1031
1032 typedef struct {
1033 unsigned int constants; /* constant pool */
1034 unsigned int fields;
1035 unsigned int methods;
1036 unsigned int interfaces;
1037 unsigned int fields2; /* number of static 2-word fields */
1038 unsigned int innerclasses; /* # of records in InnerClasses attr */
1039
1040 method_size_info clinit; /* memory used in clinit */
1041 method_size_info main; /* used everywhere else */
1042 } class_size_info;
1043
1044 /*
1045 * Functions defined in libjava.so to perform string conversions.
1046 *
1047 */
1048
1049 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1050
1051 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1052
1053 /* This is the function defined in libjava.so that performs class
1054 * format checks. This functions fills in size information about
1055 * the class file and returns:
1056 *
1057 * 0: good
1058 * -1: out of memory
1059 * -2: bad format
1060 * -3: unsupported version
1061 * -4: bad class name
1062 */
1063
1064 typedef jint (*check_format_fn_t)(char *class_name,
1065 unsigned char *data,
1066 unsigned int data_size,
1067 class_size_info *class_size,
1068 char *message_buffer,
1069 jint buffer_length,
1070 jboolean measure_only,
1071 jboolean check_relaxed);
1072
1073 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1074 JVM_ACC_FINAL | \
1075 JVM_ACC_SUPER | \
1076 JVM_ACC_INTERFACE | \
1077 JVM_ACC_ABSTRACT | \
1078 JVM_ACC_ANNOTATION | \
1079 JVM_ACC_ENUM | \
1080 JVM_ACC_SYNTHETIC)
1081
1082 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1083 JVM_ACC_PRIVATE | \
1084 JVM_ACC_PROTECTED | \
1085 JVM_ACC_STATIC | \
1086 JVM_ACC_FINAL | \
1087 JVM_ACC_VOLATILE | \
1088 JVM_ACC_TRANSIENT | \
1089 JVM_ACC_ENUM | \
1090 JVM_ACC_SYNTHETIC)
1091
1092 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1093 JVM_ACC_PRIVATE | \
1094 JVM_ACC_PROTECTED | \
1095 JVM_ACC_STATIC | \
1096 JVM_ACC_FINAL | \
1097 JVM_ACC_SYNCHRONIZED | \
1098 JVM_ACC_BRIDGE | \
1099 JVM_ACC_VARARGS | \
1100 JVM_ACC_NATIVE | \
1101 JVM_ACC_ABSTRACT | \
1102 JVM_ACC_STRICT | \
1103 JVM_ACC_SYNTHETIC)
1104
1105 /*
1106 * This is the function defined in libjava.so to perform path
1107 * canonicalization. VM call this function before opening jar files
1108 * to load system classes.
1109 *
1110 */
1111
1112 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1113
1114 /*************************************************************************
1115 PART 3: I/O and Network Support
1116 ************************************************************************/
1117
1118 /*
1119 * Convert a pathname into native format. This function does syntactic
1120 * cleanup, such as removing redundant separator characters. It modifies
1121 * the given pathname string in place.
1122 */
1123 JNIEXPORT char * JNICALL
1124 JVM_NativePath(char *);
1125
1126 /*
1127 * The standard printing functions supported by the Java VM. (Should they
1128 * be renamed to JVM_* in the future?
1129 */
1130
1131 /*
1132 * BE CAREFUL! The following functions do not implement the
1133 * full feature set of standard C printf formats.
1134 */
1135 int
1136 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1137
1138 int
1139 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1140
1141 int
1142 jio_fprintf(FILE *, const char *fmt, ...);
1143
1144 int
1145 jio_vfprintf(FILE *, const char *fmt, va_list args);
1146
1147
1148 JNIEXPORT void * JNICALL
1149 JVM_RawMonitorCreate(void);
1150
1151 JNIEXPORT void JNICALL
1152 JVM_RawMonitorDestroy(void *mon);
1153
1154 JNIEXPORT jint JNICALL
1155 JVM_RawMonitorEnter(void *mon);
1156
1157 JNIEXPORT void JNICALL
1158 JVM_RawMonitorExit(void *mon);
1159
1160 /*
1161 * java.lang.management support
1162 */
1163 JNIEXPORT void* JNICALL
1164 JVM_GetManagement(jint version);
1165
1166 /*
1167 * com.sun.tools.attach.VirtualMachine support
1168 *
1169 * Initialize the agent properties with the properties maintained in the VM.
1170 */
1171 JNIEXPORT jobject JNICALL
1172 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1173
1174 JNIEXPORT jstring JNICALL
1175 JVM_GetTemporaryDirectory(JNIEnv *env);
1176
1177 /* Generics reflection support.
1178 *
1179 * Returns information about the given class's EnclosingMethod
1180 * attribute, if present, or null if the class had no enclosing
1181 * method.
1182 *
1183 * If non-null, the returned array contains three elements. Element 0
1184 * is the java.lang.Class of which the enclosing method is a member,
1185 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1186 * method's name and descriptor, respectively.
1187 */
1188 JNIEXPORT jobjectArray JNICALL
1189 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1190
1191 /* =========================================================================
1192 * The following defines a private JVM interface that the JDK can query
1193 * for the JVM version and capabilities. sun.misc.Version defines
1194 * the methods for getting the VM version and its capabilities.
1195 *
1196 * When a new bit is added, the following should be updated to provide
1197 * access to the new capability:
1198 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1199 * SDK: Version class
1200 *
1201 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1202 * JVM to query for the JDK version and capabilities.
1203 *
1204 * When a new bit is added, the following should be updated to provide
1205 * access to the new capability:
1206 * HS: JDK_Version class
1207 * SDK: JDK_GetVersionInfo0
1208 *
1209 * ==========================================================================
1210 */
1211 typedef struct {
1212 unsigned int jvm_version; /* Encoded $VNUM as specified by JEP-223 */
1213 unsigned int patch_version : 8; /* JEP-223 patch version */
1214 unsigned int reserved3 : 8;
1215 unsigned int reserved1 : 16;
1216 unsigned int reserved2;
1217
1218 /* The following bits represents JVM supports that JDK has dependency on.
1219 * JDK can use these bits to determine which JVM version
1220 * and support it has to maintain runtime compatibility.
1221 *
1222 * When a new bit is added in a minor or update release, make sure
1223 * the new bit is also added in the main/baseline.
1224 */
1225 unsigned int is_attach_supported : 1;
1226 unsigned int : 31;
1227 unsigned int : 32;
1228 unsigned int : 32;
1229 } jvm_version_info;
1230
1231 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1232 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1233 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1234 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1235
1236 JNIEXPORT void JNICALL
1237 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1238
1239 typedef struct {
1240 unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1241 unsigned int patch_version : 8; /* JEP-223 patch version */
1242 unsigned int reserved3 : 8;
1243 unsigned int reserved1 : 16;
1244 unsigned int reserved2;
1245
1246 /* The following bits represents new JDK supports that VM has dependency on.
1247 * VM implementation can use these bits to determine which JDK version
1248 * and support it has to maintain runtime compatibility.
1249 *
1250 * When a new bit is added in a minor or update release, make sure
1251 * the new bit is also added in the main/baseline.
1252 */
1253 unsigned int thread_park_blocker : 1;
1254 unsigned int post_vm_init_hook_enabled : 1;
1255 unsigned int pending_list_uses_discovered_field : 1;
1256 unsigned int : 29;
1257 unsigned int : 32;
1258 unsigned int : 32;
1259 } jdk_version_info;
1260
1261 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1262 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1263 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1264 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1265
1266 /*
1267 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1268 * that is dynamically looked up by JVM.
1269 */
1270 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1271
1272 /*
1273 * This structure is used by the launcher to get the default thread
1274 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1275 * version of 1.1. As it is not supported otherwise, it has been removed
1276 * from jni.h
1277 */
1278 typedef struct JDK1_1InitArgs {
1279 jint version;
1280
1281 char **properties;
1282 jint checkSource;
1283 jint nativeStackSize;
1284 jint javaStackSize;
1285 jint minHeapSize;
1286 jint maxHeapSize;
1287 jint verifyMode;
1288 char *classpath;
1289
1290 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1291 void (JNICALL *exit)(jint code);
1292 void (JNICALL *abort)(void);
1293
1294 jint enableClassGC;
1295 jint enableVerboseGC;
1296 jint disableAsyncGC;
1297 jint verbose;
1298 jboolean debugging;
1299 jint debugPort;
1300 } JDK1_1InitArgs;
1301
1302
1303 #ifdef __cplusplus
1304 } /* extern "C" */
1305
1306 #endif /* __cplusplus */
1307
1308 #endif /* !_JAVASOFT_JVM_H_ */