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_SHOW_HIDDEN_FRAMES = 0x20,
183 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
184 };
185
186 JNIEXPORT jobject JNICALL
187 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
188 jint skip_frames, jint frame_count, jint start_index,
189 jobjectArray frames);
190
191 JNIEXPORT jint JNICALL
192 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
193 jint frame_count, jint start_index,
194 jobjectArray frames);
195
196 JNIEXPORT void JNICALL
197 JVM_ToStackTraceElement(JNIEnv* env, jobject frame, jobject stackElement);
198
199 JNIEXPORT jobjectArray JNICALL
200 JVM_GetVmArguments(JNIEnv *env);
201
202 /*
203 * java.lang.Thread
204 */
205 JNIEXPORT void JNICALL
206 JVM_StartThread(JNIEnv *env, jobject thread);
207
208 JNIEXPORT void JNICALL
209 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
210
211 JNIEXPORT jboolean JNICALL
212 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
213
214 JNIEXPORT void JNICALL
215 JVM_SuspendThread(JNIEnv *env, jobject thread);
216
217 JNIEXPORT void JNICALL
218 JVM_ResumeThread(JNIEnv *env, jobject thread);
219
220 JNIEXPORT void JNICALL
221 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
222
223 JNIEXPORT void JNICALL
224 JVM_Yield(JNIEnv *env, jclass threadClass);
225
226 JNIEXPORT void JNICALL
227 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
228
229 JNIEXPORT jobject JNICALL
230 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
231
232 JNIEXPORT jint JNICALL
233 JVM_CountStackFrames(JNIEnv *env, jobject thread);
234
235 JNIEXPORT void JNICALL
236 JVM_Interrupt(JNIEnv *env, jobject thread);
237
238 JNIEXPORT jboolean JNICALL
239 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
240
241 JNIEXPORT jboolean JNICALL
242 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
243
244 JNIEXPORT void JNICALL
245 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
246
247 JNIEXPORT jobjectArray JNICALL
248 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
249
250 JNIEXPORT void JNICALL
251 JVM_SetNativeThreadName0(const char *name);
252
253 JNIEXPORT void JNICALL
254 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
255
256 /* getStackTrace() and getAllStackTraces() method */
257 JNIEXPORT jobjectArray JNICALL
258 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
259
260 /*
261 * java.lang.SecurityManager
262 */
263 JNIEXPORT jclass JNICALL
264 JVM_CurrentLoadedClass(JNIEnv *env);
265
266 JNIEXPORT jobject JNICALL
267 JVM_CurrentClassLoader(JNIEnv *env);
268
269 JNIEXPORT jobjectArray JNICALL
270 JVM_GetClassContext(JNIEnv *env);
271
272 JNIEXPORT jint JNICALL
273 JVM_ClassDepth(JNIEnv *env, jstring name);
274
275 JNIEXPORT jint JNICALL
276 JVM_ClassLoaderDepth(JNIEnv *env);
277
278 /*
279 * java.lang.Package
280 */
281 JNIEXPORT jstring JNICALL
282 JVM_GetSystemPackage(JNIEnv *env, jstring name);
283
284 JNIEXPORT jobjectArray JNICALL
285 JVM_GetSystemPackages(JNIEnv *env);
286
287 /*
288 * java.io.ObjectInputStream
289 */
290 JNIEXPORT jobject JNICALL
291 JVM_LatestUserDefinedLoader(JNIEnv *env);
292
293 /*
294 * java.lang.reflect.Array
295 */
296 JNIEXPORT jint JNICALL
297 JVM_GetArrayLength(JNIEnv *env, jobject arr);
298
299 JNIEXPORT jobject JNICALL
300 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
301
302 JNIEXPORT jvalue JNICALL
303 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
304
305 JNIEXPORT void JNICALL
306 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
307
308 JNIEXPORT void JNICALL
309 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
310 unsigned char vCode);
311
312 JNIEXPORT jobject JNICALL
313 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
314
315 JNIEXPORT jobject JNICALL
316 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
317
318 /*
319 * java.lang.Class and java.lang.ClassLoader
320 */
321
322 #define JVM_CALLER_DEPTH -1
323
324 /*
325 * Returns the immediate caller class of the native method invoking
326 * JVM_GetCallerClass. The Method.invoke and other frames due to
327 * reflection machinery are skipped.
328 *
329 * The depth parameter must be -1 (JVM_DEPTH). The caller is expected
330 * to be marked with sun.reflect.CallerSensitive. The JVM will throw
331 * an error if it is not marked propertly.
332 */
333 JNIEXPORT jclass JNICALL
334 JVM_GetCallerClass(JNIEnv *env, int depth);
335
336
337 /*
338 * Find primitive classes
339 * utf: class name
340 */
341 JNIEXPORT jclass JNICALL
342 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
343
344
345 /*
346 * Find a class from a boot class loader. Returns NULL if class not found.
347 */
348 JNIEXPORT jclass JNICALL
349 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
350
351 /*
352 * Find a class from a given class loader. Throws ClassNotFoundException.
353 * name: name of class
354 * init: whether initialization is done
355 * loader: class loader to look up the class. This may not be the same as the caller's
356 * class loader.
357 * caller: initiating class. The initiating class may be null when a security
358 * manager is not installed.
359 */
360 JNIEXPORT jclass JNICALL
361 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
362 jobject loader, jclass caller);
363
364 /*
365 * Find a class from a given class.
366 */
367 JNIEXPORT jclass JNICALL
368 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
369 jclass from);
370
371 /* Find a loaded class cached by the VM */
372 JNIEXPORT jclass JNICALL
373 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
374
375 /* Define a class */
376 JNIEXPORT jclass JNICALL
377 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
378 jsize len, jobject pd);
379
380 /* Define a class with a source (added in JDK1.5) */
381 JNIEXPORT jclass JNICALL
382 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
383 const jbyte *buf, jsize len, jobject pd,
384 const char *source);
385
386 /*
387 * Module support funcions
388 */
389
390 JNIEXPORT void JNICALL
391 JVM_DefineModule(JNIEnv *env, jobject module, jstring version, jstring location,
392 jobjectArray packages);
393
394 JNIEXPORT void JNICALL
395 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
396
397 JNIEXPORT void JNICALL
398 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject to_module);
399
400 JNIEXPORT jboolean JNICALL
401 JVM_CanReadModule(JNIEnv *env, jobject asking_module, jobject source_module);
402
403 JNIEXPORT void JNICALL
404 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
405
406 JNIEXPORT void JNICALL
407 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
408
409 JNIEXPORT void JNICALL
410 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
411
412 JNIEXPORT jboolean JNICALL
413 JVM_IsExportedToModule(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
414
415 JNIEXPORT void JNICALL
416 JVM_AddModulePackage(JNIEnv* env, jobject module, jstring package);
417
418 JNIEXPORT jobject JNICALL
419 JVM_GetModuleByPackageName(JNIEnv *env, jobject cl, jstring pkg);
420
421 /*
422 * Reflection support functions
423 */
424
425 JNIEXPORT jstring JNICALL
426 JVM_GetClassName(JNIEnv *env, jclass cls);
427
428 JNIEXPORT jobjectArray JNICALL
429 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
430
431 JNIEXPORT jboolean JNICALL
432 JVM_IsInterface(JNIEnv *env, jclass cls);
433
434 JNIEXPORT jobjectArray JNICALL
435 JVM_GetClassSigners(JNIEnv *env, jclass cls);
436
437 JNIEXPORT void JNICALL
438 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
439
440 JNIEXPORT jobject JNICALL
441 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
442
443 JNIEXPORT jboolean JNICALL
444 JVM_IsArrayClass(JNIEnv *env, jclass cls);
445
446 JNIEXPORT jboolean JNICALL
447 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
448
449 JNIEXPORT jint JNICALL
450 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
451
452 JNIEXPORT jobjectArray JNICALL
453 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
454
455 JNIEXPORT jclass JNICALL
456 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
457
458 JNIEXPORT jstring JNICALL
459 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
460
461 /* Generics support (JDK 1.5) */
462 JNIEXPORT jstring JNICALL
463 JVM_GetClassSignature(JNIEnv *env, jclass cls);
464
465 /* Annotations support (JDK 1.5) */
466 JNIEXPORT jbyteArray JNICALL
467 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
468
469 /* Type use annotations support (JDK 1.8) */
470
471 JNIEXPORT jbyteArray JNICALL
472 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
473
474 JNIEXPORT jbyteArray JNICALL
475 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
476
477 JNIEXPORT jbyteArray JNICALL
478 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
479
480 /*
481 * New (JDK 1.4) reflection implementation
482 */
483
484 JNIEXPORT jobjectArray JNICALL
485 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
486
487 JNIEXPORT jobjectArray JNICALL
488 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
489
490 JNIEXPORT jobjectArray JNICALL
491 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
492
493 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
494 This returns the access flags for the class as specified in the
495 class file rather than searching the InnerClasses attribute (if
496 present) to find the source-level access flags. Only the values of
497 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
498 valid. */
499 JNIEXPORT jint JNICALL
500 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
501
502 /* The following two reflection routines are still needed due to startup time issues */
503 /*
504 * java.lang.reflect.Method
505 */
506 JNIEXPORT jobject JNICALL
507 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
508
509 /*
510 * java.lang.reflect.Constructor
511 */
512 JNIEXPORT jobject JNICALL
513 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
514
515 /*
516 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
517 */
518
519 JNIEXPORT jobject JNICALL
520 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
521
522 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
523 (JNIEnv *env, jobject unused, jobject jcpool);
524
525 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
526 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
527
528 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
529 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
530
531 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
532 (JNIEnv *env, jobject obj, jobject unused, jint index);
533
534 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
535 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
536
537 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
538 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
539
540 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
541 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
542
543 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
544 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
545
546 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
547 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
548
549 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
550 (JNIEnv *env, jobject obj, jobject unused, jint index);
551
552 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
553 (JNIEnv *env, jobject obj, jobject unused, jint index);
554
555 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
556 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
557
558 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
559 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
560
561 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
562 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
563
564 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
565 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
566
567 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
568 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
569
570 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
571 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
572
573 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
574 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
575
576 /*
577 * Parameter reflection
578 */
579
580 JNIEXPORT jobjectArray JNICALL
581 JVM_GetMethodParameters(JNIEnv *env, jobject method);
582
583 /*
584 * java.security.*
585 */
586
587 JNIEXPORT jobject JNICALL
588 JVM_DoPrivileged(JNIEnv *env, jclass cls,
589 jobject action, jobject context, jboolean wrapException);
590
591 JNIEXPORT jobject JNICALL
592 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
593
594 JNIEXPORT jobject JNICALL
595 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
596
597 /*
598 * Signal support, used to implement the shutdown sequence. Every VM must
599 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
600 * (^C) and the latter for external termination (kill, system shutdown, etc.).
601 * Other platform-dependent signal values may also be supported.
602 */
603
604 JNIEXPORT void * JNICALL
605 JVM_RegisterSignal(jint sig, void *handler);
606
607 JNIEXPORT jboolean JNICALL
608 JVM_RaiseSignal(jint sig);
609
610 JNIEXPORT jint JNICALL
611 JVM_FindSignal(const char *name);
612
613 /*
614 * Retrieve the assertion directives for the specified class.
615 */
616 JNIEXPORT jboolean JNICALL
617 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
618
619 /*
620 * Retrieve the assertion directives from the VM.
621 */
622 JNIEXPORT jobject JNICALL
623 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
624
625 /*
626 * java.util.concurrent.atomic.AtomicLong
627 */
628 JNIEXPORT jboolean JNICALL
629 JVM_SupportsCX8(void);
630
631 /*
632 * com.sun.dtrace.jsdt support
633 */
634
635 #define JVM_TRACING_DTRACE_VERSION 1
636
637 /*
638 * Structure to pass one probe description to JVM
639 */
640 typedef struct {
641 jmethodID method;
642 jstring function;
643 jstring name;
644 void* reserved[4]; // for future use
645 } JVM_DTraceProbe;
646
647 /**
648 * Encapsulates the stability ratings for a DTrace provider field
649 */
650 typedef struct {
651 jint nameStability;
652 jint dataStability;
653 jint dependencyClass;
654 } JVM_DTraceInterfaceAttributes;
655
656 /*
657 * Structure to pass one provider description to JVM
658 */
659 typedef struct {
660 jstring name;
661 JVM_DTraceProbe* probes;
662 jint probe_count;
663 JVM_DTraceInterfaceAttributes providerAttributes;
664 JVM_DTraceInterfaceAttributes moduleAttributes;
665 JVM_DTraceInterfaceAttributes functionAttributes;
666 JVM_DTraceInterfaceAttributes nameAttributes;
667 JVM_DTraceInterfaceAttributes argsAttributes;
668 void* reserved[4]; // for future use
669 } JVM_DTraceProvider;
670
671 /*
672 * Get the version number the JVM was built with
673 */
674 JNIEXPORT jint JNICALL
675 JVM_DTraceGetVersion(JNIEnv* env);
676
677 /*
678 * Register new probe with given signature, return global handle
679 *
680 * The version passed in is the version that the library code was
681 * built with.
682 */
683 JNIEXPORT jlong JNICALL
684 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
685 jint providers_count, JVM_DTraceProvider* providers);
686
687 /*
688 * Check JSDT probe
689 */
690 JNIEXPORT jboolean JNICALL
691 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
692
693 /*
694 * Destroy custom DOF
695 */
696 JNIEXPORT void JNICALL
697 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
698
699 /*
700 * Check to see if DTrace is supported by OS
701 */
702 JNIEXPORT jboolean JNICALL
703 JVM_DTraceIsSupported(JNIEnv* env);
704
705 /*************************************************************************
706 PART 2: Support for the Verifier and Class File Format Checker
707 ************************************************************************/
708 /*
709 * Return the class name in UTF format. The result is valid
710 * until JVM_ReleaseUTf is called.
711 *
712 * The caller must treat the string as a constant and not modify it
713 * in any way.
714 */
715 JNIEXPORT const char * JNICALL
716 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
717
718 /*
719 * Returns the constant pool types in the buffer provided by "types."
720 */
721 JNIEXPORT void JNICALL
722 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
723
724 /*
725 * Returns the number of Constant Pool entries.
726 */
727 JNIEXPORT jint JNICALL
728 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
729
730 /*
731 * Returns the number of *declared* fields or methods.
732 */
733 JNIEXPORT jint JNICALL
734 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
735
736 JNIEXPORT jint JNICALL
737 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
738
739 /*
740 * Returns the CP indexes of exceptions raised by a given method.
741 * Places the result in the given buffer.
742 *
743 * The method is identified by method_index.
744 */
745 JNIEXPORT void JNICALL
746 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
747 unsigned short *exceptions);
748 /*
749 * Returns the number of exceptions raised by a given method.
750 * The method is identified by method_index.
751 */
752 JNIEXPORT jint JNICALL
753 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
754
755 /*
756 * Returns the byte code sequence of a given method.
757 * Places the result in the given buffer.
758 *
759 * The method is identified by method_index.
760 */
761 JNIEXPORT void JNICALL
762 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
763 unsigned char *code);
764
765 /*
766 * Returns the length of the byte code sequence of a given method.
767 * The method is identified by method_index.
768 */
769 JNIEXPORT jint JNICALL
770 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
771
772 /*
773 * A structure used to a capture exception table entry in a Java method.
774 */
775 typedef struct {
776 jint start_pc;
777 jint end_pc;
778 jint handler_pc;
779 jint catchType;
780 } JVM_ExceptionTableEntryType;
781
782 /*
783 * Returns the exception table entry at entry_index of a given method.
784 * Places the result in the given buffer.
785 *
786 * The method is identified by method_index.
787 */
788 JNIEXPORT void JNICALL
789 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
790 jint entry_index,
791 JVM_ExceptionTableEntryType *entry);
792
793 /*
794 * Returns the length of the exception table of a given method.
795 * The method is identified by method_index.
796 */
797 JNIEXPORT jint JNICALL
798 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
799
800 /*
801 * Returns the modifiers of a given field.
802 * The field is identified by field_index.
803 */
804 JNIEXPORT jint JNICALL
805 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
806
807 /*
808 * Returns the modifiers of a given method.
809 * The method is identified by method_index.
810 */
811 JNIEXPORT jint JNICALL
812 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
813
814 /*
815 * Returns the number of local variables of a given method.
816 * The method is identified by method_index.
817 */
818 JNIEXPORT jint JNICALL
819 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
820
821 /*
822 * Returns the number of arguments (including this pointer) of a given method.
823 * The method is identified by method_index.
824 */
825 JNIEXPORT jint JNICALL
826 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
827
828 /*
829 * Returns the maximum amount of stack (in words) used by a given method.
830 * The method is identified by method_index.
831 */
832 JNIEXPORT jint JNICALL
833 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
834
835 /*
836 * Is a given method a constructor.
837 * The method is identified by method_index.
838 */
839 JNIEXPORT jboolean JNICALL
840 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
841
842 /*
843 * Is the given method generated by the VM.
844 * The method is identified by method_index.
845 */
846 JNIEXPORT jboolean JNICALL
847 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
848
849 /*
850 * Returns the name of a given method in UTF format.
851 * The result remains valid until JVM_ReleaseUTF is called.
852 *
853 * The caller must treat the string as a constant and not modify it
854 * in any way.
855 */
856 JNIEXPORT const char * JNICALL
857 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
858
859 /*
860 * Returns the signature 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_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
868
869 /*
870 * Returns the name of the field referred to at a given constant pool
871 * index.
872 *
873 * The result is in UTF format and remains valid until JVM_ReleaseUTF
874 * is called.
875 *
876 * The caller must treat the string as a constant and not modify it
877 * in any way.
878 */
879 JNIEXPORT const char * JNICALL
880 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
881
882 /*
883 * Returns the name of the method referred to at a given constant pool
884 * index.
885 *
886 * The result is in UTF format and remains valid until JVM_ReleaseUTF
887 * is called.
888 *
889 * The caller must treat the string as a constant and not modify it
890 * in any way.
891 */
892 JNIEXPORT const char * JNICALL
893 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
894
895 /*
896 * Returns the signature of the method referred to at a given constant pool
897 * index.
898 *
899 * The result is in UTF format and remains valid until JVM_ReleaseUTF
900 * is called.
901 *
902 * The caller must treat the string as a constant and not modify it
903 * in any way.
904 */
905 JNIEXPORT const char * JNICALL
906 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
907
908 /*
909 * Returns the signature of the field referred to at a given constant pool
910 * index.
911 *
912 * The result is in UTF format and remains valid until JVM_ReleaseUTF
913 * is called.
914 *
915 * The caller must treat the string as a constant and not modify it
916 * in any way.
917 */
918 JNIEXPORT const char * JNICALL
919 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
920
921 /*
922 * Returns the class name referred to at a given constant pool index.
923 *
924 * The result is in UTF format and remains valid until JVM_ReleaseUTF
925 * is called.
926 *
927 * The caller must treat the string as a constant and not modify it
928 * in any way.
929 */
930 JNIEXPORT const char * JNICALL
931 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
932
933 /*
934 * Returns the class name referred to at a given constant pool index.
935 *
936 * The constant pool entry must refer to a CONSTANT_Fieldref.
937 *
938 * The result is in UTF format and remains valid until JVM_ReleaseUTF
939 * is called.
940 *
941 * The caller must treat the string as a constant and not modify it
942 * in any way.
943 */
944 JNIEXPORT const char * JNICALL
945 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
946
947 /*
948 * Returns the class name referred to at a given constant pool index.
949 *
950 * The constant pool entry must refer to CONSTANT_Methodref or
951 * CONSTANT_InterfaceMethodref.
952 *
953 * The result is in UTF format and remains valid until JVM_ReleaseUTF
954 * is called.
955 *
956 * The caller must treat the string as a constant and not modify it
957 * in any way.
958 */
959 JNIEXPORT const char * JNICALL
960 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
961
962 /*
963 * Returns the modifiers of a field in calledClass. The field is
964 * referred to in class cb at constant pool entry index.
965 *
966 * The caller must treat the string as a constant and not modify it
967 * in any way.
968 *
969 * Returns -1 if the field does not exist in calledClass.
970 */
971 JNIEXPORT jint JNICALL
972 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
973
974 /*
975 * Returns the modifiers of a method in calledClass. The method is
976 * referred to in class cb at constant pool entry index.
977 *
978 * Returns -1 if the method does not exist in calledClass.
979 */
980 JNIEXPORT jint JNICALL
981 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
982
983 /*
984 * Releases the UTF string obtained from the VM.
985 */
986 JNIEXPORT void JNICALL
987 JVM_ReleaseUTF(const char *utf);
988
989 /*
990 * Compare if two classes are in the same package.
991 */
992 JNIEXPORT jboolean JNICALL
993 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
994
995 /* Get classfile constants */
996 #include "classfile_constants.h"
997
998 /*
999 * A function defined by the byte-code verifier and called by the VM.
1000 * This is not a function implemented in the VM.
1001 *
1002 * Returns JNI_FALSE if verification fails. A detailed error message
1003 * will be places in msg_buf, whose length is specified by buf_len.
1004 */
1005 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1006 jclass cb,
1007 char * msg_buf,
1008 jint buf_len);
1009
1010
1011 /*
1012 * Support for a VM-independent class format checker.
1013 */
1014 typedef struct {
1015 unsigned long code; /* byte code */
1016 unsigned long excs; /* exceptions */
1017 unsigned long etab; /* catch table */
1018 unsigned long lnum; /* line number */
1019 unsigned long lvar; /* local vars */
1020 } method_size_info;
1021
1022 typedef struct {
1023 unsigned int constants; /* constant pool */
1024 unsigned int fields;
1025 unsigned int methods;
1026 unsigned int interfaces;
1027 unsigned int fields2; /* number of static 2-word fields */
1028 unsigned int innerclasses; /* # of records in InnerClasses attr */
1029
1030 method_size_info clinit; /* memory used in clinit */
1031 method_size_info main; /* used everywhere else */
1032 } class_size_info;
1033
1034 /*
1035 * Functions defined in libjava.so to perform string conversions.
1036 *
1037 */
1038
1039 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1040
1041 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1042
1043 /* This is the function defined in libjava.so that performs class
1044 * format checks. This functions fills in size information about
1045 * the class file and returns:
1046 *
1047 * 0: good
1048 * -1: out of memory
1049 * -2: bad format
1050 * -3: unsupported version
1051 * -4: bad class name
1052 */
1053
1054 typedef jint (*check_format_fn_t)(char *class_name,
1055 unsigned char *data,
1056 unsigned int data_size,
1057 class_size_info *class_size,
1058 char *message_buffer,
1059 jint buffer_length,
1060 jboolean measure_only,
1061 jboolean check_relaxed);
1062
1063 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1064 JVM_ACC_FINAL | \
1065 JVM_ACC_SUPER | \
1066 JVM_ACC_INTERFACE | \
1067 JVM_ACC_ABSTRACT | \
1068 JVM_ACC_ANNOTATION | \
1069 JVM_ACC_ENUM | \
1070 JVM_ACC_SYNTHETIC)
1071
1072 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1073 JVM_ACC_PRIVATE | \
1074 JVM_ACC_PROTECTED | \
1075 JVM_ACC_STATIC | \
1076 JVM_ACC_FINAL | \
1077 JVM_ACC_VOLATILE | \
1078 JVM_ACC_TRANSIENT | \
1079 JVM_ACC_ENUM | \
1080 JVM_ACC_SYNTHETIC)
1081
1082 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1083 JVM_ACC_PRIVATE | \
1084 JVM_ACC_PROTECTED | \
1085 JVM_ACC_STATIC | \
1086 JVM_ACC_FINAL | \
1087 JVM_ACC_SYNCHRONIZED | \
1088 JVM_ACC_BRIDGE | \
1089 JVM_ACC_VARARGS | \
1090 JVM_ACC_NATIVE | \
1091 JVM_ACC_ABSTRACT | \
1092 JVM_ACC_STRICT | \
1093 JVM_ACC_SYNTHETIC)
1094
1095 /*
1096 * This is the function defined in libjava.so to perform path
1097 * canonicalization. VM call this function before opening jar files
1098 * to load system classes.
1099 *
1100 */
1101
1102 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1103
1104 /*************************************************************************
1105 PART 3: I/O and Network Support
1106 ************************************************************************/
1107
1108 /*
1109 * Convert a pathname into native format. This function does syntactic
1110 * cleanup, such as removing redundant separator characters. It modifies
1111 * the given pathname string in place.
1112 */
1113 JNIEXPORT char * JNICALL
1114 JVM_NativePath(char *);
1115
1116 /*
1117 * The standard printing functions supported by the Java VM. (Should they
1118 * be renamed to JVM_* in the future?
1119 */
1120
1121 /*
1122 * BE CAREFUL! The following functions do not implement the
1123 * full feature set of standard C printf formats.
1124 */
1125 int
1126 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1127
1128 int
1129 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1130
1131 int
1132 jio_fprintf(FILE *, const char *fmt, ...);
1133
1134 int
1135 jio_vfprintf(FILE *, const char *fmt, va_list args);
1136
1137
1138 JNIEXPORT void * JNICALL
1139 JVM_RawMonitorCreate(void);
1140
1141 JNIEXPORT void JNICALL
1142 JVM_RawMonitorDestroy(void *mon);
1143
1144 JNIEXPORT jint JNICALL
1145 JVM_RawMonitorEnter(void *mon);
1146
1147 JNIEXPORT void JNICALL
1148 JVM_RawMonitorExit(void *mon);
1149
1150 /*
1151 * java.lang.management support
1152 */
1153 JNIEXPORT void* JNICALL
1154 JVM_GetManagement(jint version);
1155
1156 /*
1157 * com.sun.tools.attach.VirtualMachine support
1158 *
1159 * Initialize the agent properties with the properties maintained in the VM.
1160 */
1161 JNIEXPORT jobject JNICALL
1162 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1163
1164 JNIEXPORT jstring JNICALL
1165 JVM_GetTemporaryDirectory(JNIEnv *env);
1166
1167 /* Generics reflection support.
1168 *
1169 * Returns information about the given class's EnclosingMethod
1170 * attribute, if present, or null if the class had no enclosing
1171 * method.
1172 *
1173 * If non-null, the returned array contains three elements. Element 0
1174 * is the java.lang.Class of which the enclosing method is a member,
1175 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1176 * method's name and descriptor, respectively.
1177 */
1178 JNIEXPORT jobjectArray JNICALL
1179 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1180
1181 /* =========================================================================
1182 * The following defines a private JVM interface that the JDK can query
1183 * for the JVM version and capabilities. sun.misc.Version defines
1184 * the methods for getting the VM version and its capabilities.
1185 *
1186 * When a new bit is added, the following should be updated to provide
1187 * access to the new capability:
1188 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1189 * SDK: Version class
1190 *
1191 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1192 * JVM to query for the JDK version and capabilities.
1193 *
1194 * When a new bit is added, the following should be updated to provide
1195 * access to the new capability:
1196 * HS: JDK_Version class
1197 * SDK: JDK_GetVersionInfo0
1198 *
1199 * ==========================================================================
1200 */
1201 typedef struct {
1202 unsigned int jvm_version; /* Encoded $VNUM as specified by JEP-223 */
1203 unsigned int patch_version : 8; /* JEP-223 patch version */
1204 unsigned int reserved3 : 8;
1205 unsigned int reserved1 : 16;
1206 unsigned int reserved2;
1207
1208 /* The following bits represents JVM supports that JDK has dependency on.
1209 * JDK can use these bits to determine which JVM version
1210 * and support it has to maintain runtime compatibility.
1211 *
1212 * When a new bit is added in a minor or update release, make sure
1213 * the new bit is also added in the main/baseline.
1214 */
1215 unsigned int is_attach_supported : 1;
1216 unsigned int : 31;
1217 unsigned int : 32;
1218 unsigned int : 32;
1219 } jvm_version_info;
1220
1221 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1222 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1223 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1224 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1225
1226 JNIEXPORT void JNICALL
1227 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1228
1229 typedef struct {
1230 unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1231 unsigned int patch_version : 8; /* JEP-223 patch version */
1232 unsigned int reserved3 : 8;
1233 unsigned int reserved1 : 16;
1234 unsigned int reserved2;
1235
1236 /* The following bits represents new JDK supports that VM has dependency on.
1237 * VM implementation can use these bits to determine which JDK version
1238 * and support it has to maintain runtime compatibility.
1239 *
1240 * When a new bit is added in a minor or update release, make sure
1241 * the new bit is also added in the main/baseline.
1242 */
1243 unsigned int thread_park_blocker : 1;
1244 unsigned int post_vm_init_hook_enabled : 1;
1245 unsigned int pending_list_uses_discovered_field : 1;
1246 unsigned int : 29;
1247 unsigned int : 32;
1248 unsigned int : 32;
1249 } jdk_version_info;
1250
1251 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1252 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1253 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1254 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1255
1256 /*
1257 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1258 * that is dynamically looked up by JVM.
1259 */
1260 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1261
1262 /*
1263 * This structure is used by the launcher to get the default thread
1264 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1265 * version of 1.1. As it is not supported otherwise, it has been removed
1266 * from jni.h
1267 */
1268 typedef struct JDK1_1InitArgs {
1269 jint version;
1270
1271 char **properties;
1272 jint checkSource;
1273 jint nativeStackSize;
1274 jint javaStackSize;
1275 jint minHeapSize;
1276 jint maxHeapSize;
1277 jint verifyMode;
1278 char *classpath;
1279
1280 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1281 void (JNICALL *exit)(jint code);
1282 void (JNICALL *abort)(void);
1283
1284 jint enableClassGC;
1285 jint enableVerboseGC;
1286 jint disableAsyncGC;
1287 jint verbose;
1288 jboolean debugging;
1289 jint debugPort;
1290 } JDK1_1InitArgs;
1291
1292
1293 #ifdef __cplusplus
1294 } /* extern "C" */
1295
1296 #endif /* __cplusplus */
1297
1298 #endif /* !_JAVASOFT_JVM_H_ */