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_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
252
253 /* getStackTrace() and getAllStackTraces() method */
254 JNIEXPORT jobjectArray JNICALL
255 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
256
257 /*
258 * java.lang.SecurityManager
259 */
260 JNIEXPORT jclass JNICALL
261 JVM_CurrentLoadedClass(JNIEnv *env);
262
263 JNIEXPORT jobject JNICALL
264 JVM_CurrentClassLoader(JNIEnv *env);
265
266 JNIEXPORT jobjectArray JNICALL
267 JVM_GetClassContext(JNIEnv *env);
268
269 JNIEXPORT jint JNICALL
270 JVM_ClassDepth(JNIEnv *env, jstring name);
271
272 JNIEXPORT jint JNICALL
273 JVM_ClassLoaderDepth(JNIEnv *env);
274
275 /*
276 * java.lang.Package
277 */
278 JNIEXPORT jstring JNICALL
279 JVM_GetSystemPackage(JNIEnv *env, jstring name);
280
281 JNIEXPORT jobjectArray JNICALL
282 JVM_GetSystemPackages(JNIEnv *env);
283
284 /*
285 * java.lang.ref.Reference
286 */
287 JNIEXPORT jobject JNICALL
288 JVM_GetAndClearReferencePendingList(JNIEnv *env);
289
290 JNIEXPORT jboolean JNICALL
291 JVM_HasReferencePendingList(JNIEnv *env);
292
293 JNIEXPORT void JNICALL
294 JVM_WaitForReferencePendingList(JNIEnv *env);
295
296 /*
297 * java.io.ObjectInputStream
298 */
299 JNIEXPORT jobject JNICALL
300 JVM_LatestUserDefinedLoader(JNIEnv *env);
301
302 /*
303 * java.lang.reflect.Array
304 */
305 JNIEXPORT jint JNICALL
306 JVM_GetArrayLength(JNIEnv *env, jobject arr);
307
308 JNIEXPORT jobject JNICALL
309 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
310
311 JNIEXPORT jvalue JNICALL
312 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
313
314 JNIEXPORT void JNICALL
315 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
316
317 JNIEXPORT void JNICALL
318 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
319 unsigned char vCode);
320
321 JNIEXPORT jobject JNICALL
322 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
323
324 JNIEXPORT jobject JNICALL
325 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
326
327 /*
328 * java.lang.Class and java.lang.ClassLoader
329 */
330
331 #define JVM_CALLER_DEPTH -1
332
333 /*
334 * Returns the immediate caller class of the native method invoking
335 * JVM_GetCallerClass. The Method.invoke and other frames due to
336 * reflection machinery are skipped.
337 *
338 * The depth parameter must be -1 (JVM_DEPTH). The caller is expected
339 * to be marked with sun.reflect.CallerSensitive. The JVM will throw
340 * an error if it is not marked propertly.
341 */
342 JNIEXPORT jclass JNICALL
343 JVM_GetCallerClass(JNIEnv *env, int depth);
344
345
346 /*
347 * Find primitive classes
348 * utf: class name
349 */
350 JNIEXPORT jclass JNICALL
351 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
352
353
354 /*
355 * Find a class from a boot class loader. Returns NULL if class not found.
356 */
357 JNIEXPORT jclass JNICALL
358 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
359
360 /*
361 * Find a class from a given class loader. Throws ClassNotFoundException.
362 * name: name of class
363 * init: whether initialization is done
364 * loader: class loader to look up the class. This may not be the same as the caller's
365 * class loader.
366 * caller: initiating class. The initiating class may be null when a security
367 * manager is not installed.
368 */
369 JNIEXPORT jclass JNICALL
370 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
371 jobject loader, jclass caller);
372
373 /*
374 * Find a class from a given class.
375 */
376 JNIEXPORT jclass JNICALL
377 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
378 jclass from);
379
380 /* Find a loaded class cached by the VM */
381 JNIEXPORT jclass JNICALL
382 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
383
384 /* Define a class */
385 JNIEXPORT jclass JNICALL
386 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
387 jsize len, jobject pd);
388
389 /* Define a class with a source (added in JDK1.5) */
390 JNIEXPORT jclass JNICALL
391 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
392 const jbyte *buf, jsize len, jobject pd,
393 const char *source);
394
395 /*
396 * Module support funcions
397 */
398
399 JNIEXPORT void JNICALL
400 JVM_DefineModule(JNIEnv *env, jobject module, jstring version, jstring location,
401 jobjectArray packages);
402
403 JNIEXPORT void JNICALL
404 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
405
406 JNIEXPORT void JNICALL
407 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject to_module);
408
409 JNIEXPORT jboolean JNICALL
410 JVM_CanReadModule(JNIEnv *env, jobject asking_module, jobject source_module);
411
412 JNIEXPORT void JNICALL
413 JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
414
415 JNIEXPORT void JNICALL
416 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
417
418 JNIEXPORT void JNICALL
419 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
420
421 JNIEXPORT jboolean JNICALL
422 JVM_IsExportedToModule(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
423
424 JNIEXPORT void JNICALL
425 JVM_AddModulePackage(JNIEnv* env, jobject module, jstring package);
426
427 JNIEXPORT jobject JNICALL
428 JVM_GetModuleByPackageName(JNIEnv *env, jobject cl, jstring pkg);
429
430 /*
431 * Reflection support functions
432 */
433
434 JNIEXPORT jstring JNICALL
435 JVM_GetClassName(JNIEnv *env, jclass cls);
436
437 JNIEXPORT jobjectArray JNICALL
438 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
439
440 JNIEXPORT jboolean JNICALL
441 JVM_IsInterface(JNIEnv *env, jclass cls);
442
443 JNIEXPORT jobjectArray JNICALL
444 JVM_GetClassSigners(JNIEnv *env, jclass cls);
445
446 JNIEXPORT void JNICALL
447 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
448
449 JNIEXPORT jobject JNICALL
450 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
451
452 JNIEXPORT jboolean JNICALL
453 JVM_IsArrayClass(JNIEnv *env, jclass cls);
454
455 JNIEXPORT jboolean JNICALL
456 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
457
458 JNIEXPORT jint JNICALL
459 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
460
461 JNIEXPORT jobjectArray JNICALL
462 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
463
464 JNIEXPORT jclass JNICALL
465 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
466
467 JNIEXPORT jstring JNICALL
468 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
469
470 /* Generics support (JDK 1.5) */
471 JNIEXPORT jstring JNICALL
472 JVM_GetClassSignature(JNIEnv *env, jclass cls);
473
474 /* Annotations support (JDK 1.5) */
475 JNIEXPORT jbyteArray JNICALL
476 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
477
478 /* Type use annotations support (JDK 1.8) */
479
480 JNIEXPORT jbyteArray JNICALL
481 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
482
483 JNIEXPORT jbyteArray JNICALL
484 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
485
486 JNIEXPORT jbyteArray JNICALL
487 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
488
489 /*
490 * New (JDK 1.4) reflection implementation
491 */
492
493 JNIEXPORT jobjectArray JNICALL
494 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
495
496 JNIEXPORT jobjectArray JNICALL
497 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
498
499 JNIEXPORT jobjectArray JNICALL
500 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
501
502 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
503 This returns the access flags for the class as specified in the
504 class file rather than searching the InnerClasses attribute (if
505 present) to find the source-level access flags. Only the values of
506 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
507 valid. */
508 JNIEXPORT jint JNICALL
509 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
510
511 /* The following two reflection routines are still needed due to startup time issues */
512 /*
513 * java.lang.reflect.Method
514 */
515 JNIEXPORT jobject JNICALL
516 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
517
518 /*
519 * java.lang.reflect.Constructor
520 */
521 JNIEXPORT jobject JNICALL
522 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
523
524 /*
525 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
526 */
527
528 JNIEXPORT jobject JNICALL
529 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
530
531 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
532 (JNIEnv *env, jobject unused, jobject jcpool);
533
534 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
535 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
536
537 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
538 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
539
540 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
541 (JNIEnv *env, jobject obj, jobject unused, jint index);
542
543 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
544 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
545
546 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
547 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
548
549 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
550 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
551
552 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
553 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
554
555 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
556 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
557
558 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
559 (JNIEnv *env, jobject obj, jobject unused, jint index);
560
561 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
562 (JNIEnv *env, jobject obj, jobject unused, jint index);
563
564 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
565 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
566
567 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
568 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
569
570 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
571 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
572
573 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
574 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
575
576 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
577 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
578
579 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
580 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
581
582 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
583 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
584
585 /*
586 * Parameter reflection
587 */
588
589 JNIEXPORT jobjectArray JNICALL
590 JVM_GetMethodParameters(JNIEnv *env, jobject method);
591
592 /*
593 * java.security.*
594 */
595
596 JNIEXPORT jobject JNICALL
597 JVM_DoPrivileged(JNIEnv *env, jclass cls,
598 jobject action, jobject context, jboolean wrapException);
599
600 JNIEXPORT jobject JNICALL
601 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
602
603 JNIEXPORT jobject JNICALL
604 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
605
606 /*
607 * Signal support, used to implement the shutdown sequence. Every VM must
608 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
609 * (^C) and the latter for external termination (kill, system shutdown, etc.).
610 * Other platform-dependent signal values may also be supported.
611 */
612
613 JNIEXPORT void * JNICALL
614 JVM_RegisterSignal(jint sig, void *handler);
615
616 JNIEXPORT jboolean JNICALL
617 JVM_RaiseSignal(jint sig);
618
619 JNIEXPORT jint JNICALL
620 JVM_FindSignal(const char *name);
621
622 /*
623 * Retrieve the assertion directives for the specified class.
624 */
625 JNIEXPORT jboolean JNICALL
626 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
627
628 /*
629 * Retrieve the assertion directives from the VM.
630 */
631 JNIEXPORT jobject JNICALL
632 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
633
634 /*
635 * java.util.concurrent.atomic.AtomicLong
636 */
637 JNIEXPORT jboolean JNICALL
638 JVM_SupportsCX8(void);
639
640 /*
641 * com.sun.dtrace.jsdt support
642 */
643
644 #define JVM_TRACING_DTRACE_VERSION 1
645
646 /*
647 * Structure to pass one probe description to JVM
648 */
649 typedef struct {
650 jmethodID method;
651 jstring function;
652 jstring name;
653 void* reserved[4]; // for future use
654 } JVM_DTraceProbe;
655
656 /**
657 * Encapsulates the stability ratings for a DTrace provider field
658 */
659 typedef struct {
660 jint nameStability;
661 jint dataStability;
662 jint dependencyClass;
663 } JVM_DTraceInterfaceAttributes;
664
665 /*
666 * Structure to pass one provider description to JVM
667 */
668 typedef struct {
669 jstring name;
670 JVM_DTraceProbe* probes;
671 jint probe_count;
672 JVM_DTraceInterfaceAttributes providerAttributes;
673 JVM_DTraceInterfaceAttributes moduleAttributes;
674 JVM_DTraceInterfaceAttributes functionAttributes;
675 JVM_DTraceInterfaceAttributes nameAttributes;
676 JVM_DTraceInterfaceAttributes argsAttributes;
677 void* reserved[4]; // for future use
678 } JVM_DTraceProvider;
679
680 /*
681 * Get the version number the JVM was built with
682 */
683 JNIEXPORT jint JNICALL
684 JVM_DTraceGetVersion(JNIEnv* env);
685
686 /*
687 * Register new probe with given signature, return global handle
688 *
689 * The version passed in is the version that the library code was
690 * built with.
691 */
692 JNIEXPORT jlong JNICALL
693 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
694 jint providers_count, JVM_DTraceProvider* providers);
695
696 /*
697 * Check JSDT probe
698 */
699 JNIEXPORT jboolean JNICALL
700 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
701
702 /*
703 * Destroy custom DOF
704 */
705 JNIEXPORT void JNICALL
706 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
707
708 /*
709 * Check to see if DTrace is supported by OS
710 */
711 JNIEXPORT jboolean JNICALL
712 JVM_DTraceIsSupported(JNIEnv* env);
713
714 /*************************************************************************
715 PART 2: Support for the Verifier and Class File Format Checker
716 ************************************************************************/
717 /*
718 * Return the class name in UTF format. The result is valid
719 * until JVM_ReleaseUTf is called.
720 *
721 * The caller must treat the string as a constant and not modify it
722 * in any way.
723 */
724 JNIEXPORT const char * JNICALL
725 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
726
727 /*
728 * Returns the constant pool types in the buffer provided by "types."
729 */
730 JNIEXPORT void JNICALL
731 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
732
733 /*
734 * Returns the number of Constant Pool entries.
735 */
736 JNIEXPORT jint JNICALL
737 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
738
739 /*
740 * Returns the number of *declared* fields or methods.
741 */
742 JNIEXPORT jint JNICALL
743 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
744
745 JNIEXPORT jint JNICALL
746 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
747
748 /*
749 * Returns the CP indexes of exceptions raised by a given method.
750 * Places the result in the given buffer.
751 *
752 * The method is identified by method_index.
753 */
754 JNIEXPORT void JNICALL
755 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
756 unsigned short *exceptions);
757 /*
758 * Returns the number of exceptions raised by a given method.
759 * The method is identified by method_index.
760 */
761 JNIEXPORT jint JNICALL
762 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
763
764 /*
765 * Returns the byte code sequence of a given method.
766 * Places the result in the given buffer.
767 *
768 * The method is identified by method_index.
769 */
770 JNIEXPORT void JNICALL
771 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
772 unsigned char *code);
773
774 /*
775 * Returns the length of the byte code sequence of a given method.
776 * The method is identified by method_index.
777 */
778 JNIEXPORT jint JNICALL
779 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
780
781 /*
782 * A structure used to a capture exception table entry in a Java method.
783 */
784 typedef struct {
785 jint start_pc;
786 jint end_pc;
787 jint handler_pc;
788 jint catchType;
789 } JVM_ExceptionTableEntryType;
790
791 /*
792 * Returns the exception table entry at entry_index of a given method.
793 * Places the result in the given buffer.
794 *
795 * The method is identified by method_index.
796 */
797 JNIEXPORT void JNICALL
798 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
799 jint entry_index,
800 JVM_ExceptionTableEntryType *entry);
801
802 /*
803 * Returns the length of the exception table of a given method.
804 * The method is identified by method_index.
805 */
806 JNIEXPORT jint JNICALL
807 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
808
809 /*
810 * Returns the modifiers of a given field.
811 * The field is identified by field_index.
812 */
813 JNIEXPORT jint JNICALL
814 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
815
816 /*
817 * Returns the modifiers of a given method.
818 * The method is identified by method_index.
819 */
820 JNIEXPORT jint JNICALL
821 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
822
823 /*
824 * Returns the number of local variables of a given method.
825 * The method is identified by method_index.
826 */
827 JNIEXPORT jint JNICALL
828 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
829
830 /*
831 * Returns the number of arguments (including this pointer) of a given method.
832 * The method is identified by method_index.
833 */
834 JNIEXPORT jint JNICALL
835 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
836
837 /*
838 * Returns the maximum amount of stack (in words) used by a given method.
839 * The method is identified by method_index.
840 */
841 JNIEXPORT jint JNICALL
842 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
843
844 /*
845 * Is a given method a constructor.
846 * The method is identified by method_index.
847 */
848 JNIEXPORT jboolean JNICALL
849 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
850
851 /*
852 * Is the given method generated by the VM.
853 * The method is identified by method_index.
854 */
855 JNIEXPORT jboolean JNICALL
856 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
857
858 /*
859 * Returns the name of a given method in UTF format.
860 * The result remains valid until JVM_ReleaseUTF is called.
861 *
862 * The caller must treat the string as a constant and not modify it
863 * in any way.
864 */
865 JNIEXPORT const char * JNICALL
866 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
867
868 /*
869 * Returns the signature of a given method in UTF format.
870 * The result remains valid until JVM_ReleaseUTF is called.
871 *
872 * The caller must treat the string as a constant and not modify it
873 * in any way.
874 */
875 JNIEXPORT const char * JNICALL
876 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
877
878 /*
879 * Returns the name of the field referred to at a given constant pool
880 * index.
881 *
882 * The result is in UTF format and remains valid until JVM_ReleaseUTF
883 * is called.
884 *
885 * The caller must treat the string as a constant and not modify it
886 * in any way.
887 */
888 JNIEXPORT const char * JNICALL
889 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
890
891 /*
892 * Returns the name of the method referred to at a given constant pool
893 * index.
894 *
895 * The result is in UTF format and remains valid until JVM_ReleaseUTF
896 * is called.
897 *
898 * The caller must treat the string as a constant and not modify it
899 * in any way.
900 */
901 JNIEXPORT const char * JNICALL
902 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
903
904 /*
905 * Returns the signature of the method referred to at a given constant pool
906 * index.
907 *
908 * The result is in UTF format and remains valid until JVM_ReleaseUTF
909 * is called.
910 *
911 * The caller must treat the string as a constant and not modify it
912 * in any way.
913 */
914 JNIEXPORT const char * JNICALL
915 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
916
917 /*
918 * Returns the signature of the field referred to at a given constant pool
919 * index.
920 *
921 * The result is in UTF format and remains valid until JVM_ReleaseUTF
922 * is called.
923 *
924 * The caller must treat the string as a constant and not modify it
925 * in any way.
926 */
927 JNIEXPORT const char * JNICALL
928 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
929
930 /*
931 * Returns the class name referred to at a given constant pool index.
932 *
933 * The result is in UTF format and remains valid until JVM_ReleaseUTF
934 * is called.
935 *
936 * The caller must treat the string as a constant and not modify it
937 * in any way.
938 */
939 JNIEXPORT const char * JNICALL
940 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
941
942 /*
943 * Returns the class name referred to at a given constant pool index.
944 *
945 * The constant pool entry must refer to a CONSTANT_Fieldref.
946 *
947 * The result is in UTF format and remains valid until JVM_ReleaseUTF
948 * is called.
949 *
950 * The caller must treat the string as a constant and not modify it
951 * in any way.
952 */
953 JNIEXPORT const char * JNICALL
954 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
955
956 /*
957 * Returns the class name referred to at a given constant pool index.
958 *
959 * The constant pool entry must refer to CONSTANT_Methodref or
960 * CONSTANT_InterfaceMethodref.
961 *
962 * The result is in UTF format and remains valid until JVM_ReleaseUTF
963 * is called.
964 *
965 * The caller must treat the string as a constant and not modify it
966 * in any way.
967 */
968 JNIEXPORT const char * JNICALL
969 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
970
971 /*
972 * Returns the modifiers of a field in calledClass. The field is
973 * referred to in class cb at constant pool entry index.
974 *
975 * The caller must treat the string as a constant and not modify it
976 * in any way.
977 *
978 * Returns -1 if the field does not exist in calledClass.
979 */
980 JNIEXPORT jint JNICALL
981 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
982
983 /*
984 * Returns the modifiers of a method in calledClass. The method is
985 * referred to in class cb at constant pool entry index.
986 *
987 * Returns -1 if the method does not exist in calledClass.
988 */
989 JNIEXPORT jint JNICALL
990 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
991
992 /*
993 * Releases the UTF string obtained from the VM.
994 */
995 JNIEXPORT void JNICALL
996 JVM_ReleaseUTF(const char *utf);
997
998 /*
999 * Compare if two classes are in the same package.
1000 */
1001 JNIEXPORT jboolean JNICALL
1002 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1003
1004 /* Get classfile constants */
1005 #include "classfile_constants.h"
1006
1007 /*
1008 * A function defined by the byte-code verifier and called by the VM.
1009 * This is not a function implemented in the VM.
1010 *
1011 * Returns JNI_FALSE if verification fails. A detailed error message
1012 * will be places in msg_buf, whose length is specified by buf_len.
1013 */
1014 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1015 jclass cb,
1016 char * msg_buf,
1017 jint buf_len);
1018
1019
1020 /*
1021 * Support for a VM-independent class format checker.
1022 */
1023 typedef struct {
1024 unsigned long code; /* byte code */
1025 unsigned long excs; /* exceptions */
1026 unsigned long etab; /* catch table */
1027 unsigned long lnum; /* line number */
1028 unsigned long lvar; /* local vars */
1029 } method_size_info;
1030
1031 typedef struct {
1032 unsigned int constants; /* constant pool */
1033 unsigned int fields;
1034 unsigned int methods;
1035 unsigned int interfaces;
1036 unsigned int fields2; /* number of static 2-word fields */
1037 unsigned int innerclasses; /* # of records in InnerClasses attr */
1038
1039 method_size_info clinit; /* memory used in clinit */
1040 method_size_info main; /* used everywhere else */
1041 } class_size_info;
1042
1043 /*
1044 * Functions defined in libjava.so to perform string conversions.
1045 *
1046 */
1047
1048 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1049
1050 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1051
1052 /* This is the function defined in libjava.so that performs class
1053 * format checks. This functions fills in size information about
1054 * the class file and returns:
1055 *
1056 * 0: good
1057 * -1: out of memory
1058 * -2: bad format
1059 * -3: unsupported version
1060 * -4: bad class name
1061 */
1062
1063 typedef jint (*check_format_fn_t)(char *class_name,
1064 unsigned char *data,
1065 unsigned int data_size,
1066 class_size_info *class_size,
1067 char *message_buffer,
1068 jint buffer_length,
1069 jboolean measure_only,
1070 jboolean check_relaxed);
1071
1072 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1073 JVM_ACC_FINAL | \
1074 JVM_ACC_SUPER | \
1075 JVM_ACC_INTERFACE | \
1076 JVM_ACC_ABSTRACT | \
1077 JVM_ACC_ANNOTATION | \
1078 JVM_ACC_ENUM | \
1079 JVM_ACC_SYNTHETIC)
1080
1081 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1082 JVM_ACC_PRIVATE | \
1083 JVM_ACC_PROTECTED | \
1084 JVM_ACC_STATIC | \
1085 JVM_ACC_FINAL | \
1086 JVM_ACC_VOLATILE | \
1087 JVM_ACC_TRANSIENT | \
1088 JVM_ACC_ENUM | \
1089 JVM_ACC_SYNTHETIC)
1090
1091 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1092 JVM_ACC_PRIVATE | \
1093 JVM_ACC_PROTECTED | \
1094 JVM_ACC_STATIC | \
1095 JVM_ACC_FINAL | \
1096 JVM_ACC_SYNCHRONIZED | \
1097 JVM_ACC_BRIDGE | \
1098 JVM_ACC_VARARGS | \
1099 JVM_ACC_NATIVE | \
1100 JVM_ACC_ABSTRACT | \
1101 JVM_ACC_STRICT | \
1102 JVM_ACC_SYNTHETIC)
1103
1104 /*
1105 * This is the function defined in libjava.so to perform path
1106 * canonicalization. VM call this function before opening jar files
1107 * to load system classes.
1108 *
1109 */
1110
1111 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
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 /*
1131 * BE CAREFUL! The following functions do not implement the
1132 * full feature set of standard C printf formats.
1133 */
1134 int
1135 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1136
1137 int
1138 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1139
1140 int
1141 jio_fprintf(FILE *, const char *fmt, ...);
1142
1143 int
1144 jio_vfprintf(FILE *, const char *fmt, va_list args);
1145
1146
1147 JNIEXPORT void * JNICALL
1148 JVM_RawMonitorCreate(void);
1149
1150 JNIEXPORT void JNICALL
1151 JVM_RawMonitorDestroy(void *mon);
1152
1153 JNIEXPORT jint JNICALL
1154 JVM_RawMonitorEnter(void *mon);
1155
1156 JNIEXPORT void JNICALL
1157 JVM_RawMonitorExit(void *mon);
1158
1159 /*
1160 * java.lang.management support
1161 */
1162 JNIEXPORT void* JNICALL
1163 JVM_GetManagement(jint version);
1164
1165 /*
1166 * com.sun.tools.attach.VirtualMachine support
1167 *
1168 * Initialize the agent properties with the properties maintained in the VM.
1169 */
1170 JNIEXPORT jobject JNICALL
1171 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1172
1173 JNIEXPORT jstring JNICALL
1174 JVM_GetTemporaryDirectory(JNIEnv *env);
1175
1176 /* Generics reflection support.
1177 *
1178 * Returns information about the given class's EnclosingMethod
1179 * attribute, if present, or null if the class had no enclosing
1180 * method.
1181 *
1182 * If non-null, the returned array contains three elements. Element 0
1183 * is the java.lang.Class of which the enclosing method is a member,
1184 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1185 * method's name and descriptor, respectively.
1186 */
1187 JNIEXPORT jobjectArray JNICALL
1188 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1189
1190 /* =========================================================================
1191 * The following defines a private JVM interface that the JDK can query
1192 * for the JVM version and capabilities. sun.misc.Version defines
1193 * the methods for getting the VM version and its capabilities.
1194 *
1195 * When a new bit is added, the following should be updated to provide
1196 * access to the new capability:
1197 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1198 * SDK: Version class
1199 *
1200 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1201 * JVM to query for the JDK version and capabilities.
1202 *
1203 * When a new bit is added, the following should be updated to provide
1204 * access to the new capability:
1205 * HS: JDK_Version class
1206 * SDK: JDK_GetVersionInfo0
1207 *
1208 * ==========================================================================
1209 */
1210 typedef struct {
1211 unsigned int jvm_version; /* Encoded $VNUM as specified by JEP-223 */
1212 unsigned int patch_version : 8; /* JEP-223 patch version */
1213 unsigned int reserved3 : 8;
1214 unsigned int reserved1 : 16;
1215 unsigned int reserved2;
1216
1217 /* The following bits represents JVM supports that JDK has dependency on.
1218 * JDK can use these bits to determine which JVM version
1219 * and support it has to maintain runtime compatibility.
1220 *
1221 * When a new bit is added in a minor or update release, make sure
1222 * the new bit is also added in the main/baseline.
1223 */
1224 unsigned int is_attach_supported : 1;
1225 unsigned int : 31;
1226 unsigned int : 32;
1227 unsigned int : 32;
1228 } jvm_version_info;
1229
1230 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1231 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1232 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1233 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1234
1235 JNIEXPORT void JNICALL
1236 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1237
1238 typedef struct {
1239 unsigned int jdk_version; /* Encoded $VNUM as specified by JEP-223 */
1240 unsigned int patch_version : 8; /* JEP-223 patch version */
1241 unsigned int reserved3 : 8;
1242 unsigned int reserved1 : 16;
1243 unsigned int reserved2;
1244
1245 /* The following bits represents new JDK supports that VM has dependency on.
1246 * VM implementation can use these bits to determine which JDK version
1247 * and support it has to maintain runtime compatibility.
1248 *
1249 * When a new bit is added in a minor or update release, make sure
1250 * the new bit is also added in the main/baseline.
1251 */
1252 unsigned int thread_park_blocker : 1;
1253 unsigned int post_vm_init_hook_enabled : 1;
1254 unsigned int pending_list_uses_discovered_field : 1;
1255 unsigned int : 29;
1256 unsigned int : 32;
1257 unsigned int : 32;
1258 } jdk_version_info;
1259
1260 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1261 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1262 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1263 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1264
1265 /*
1266 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1267 * that is dynamically looked up by JVM.
1268 */
1269 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1270
1271 /*
1272 * This structure is used by the launcher to get the default thread
1273 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1274 * version of 1.1. As it is not supported otherwise, it has been removed
1275 * from jni.h
1276 */
1277 typedef struct JDK1_1InitArgs {
1278 jint version;
1279
1280 char **properties;
1281 jint checkSource;
1282 jint nativeStackSize;
1283 jint javaStackSize;
1284 jint minHeapSize;
1285 jint maxHeapSize;
1286 jint verifyMode;
1287 char *classpath;
1288
1289 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1290 void (JNICALL *exit)(jint code);
1291 void (JNICALL *abort)(void);
1292
1293 jint enableClassGC;
1294 jint enableVerboseGC;
1295 jint disableAsyncGC;
1296 jint verbose;
1297 jboolean debugging;
1298 jint debugPort;
1299 } JDK1_1InitArgs;
1300
1301
1302 #ifdef __cplusplus
1303 } /* extern "C" */
1304
1305 #endif /* __cplusplus */
1306
1307 #endif /* !_JAVASOFT_JVM_H_ */