1 /*
2 * Copyright (c) 1997, 2014, 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 nerwork 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 4
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 void JNICALL
108 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
109 jobject dst, jint dst_pos, jint length);
110
111 JNIEXPORT jobject JNICALL
112 JVM_InitProperties(JNIEnv *env, jobject p);
113
114
115 /*
116 * java.lang.Runtime
117 */
118 JNIEXPORT void JNICALL
119 JVM_Halt(jint code);
120
121 JNIEXPORT void JNICALL
122 JVM_GC(void);
123
124 /* Returns the number of real-time milliseconds that have elapsed since the
125 * least-recently-inspected heap object was last inspected by the garbage
126 * collector.
127 *
128 * For simple stop-the-world collectors this value is just the time
129 * since the most recent collection. For generational collectors it is the
130 * time since the oldest generation was most recently collected. Other
131 * collectors are free to return a pessimistic estimate of the elapsed time, or
132 * simply the time since the last full collection was performed.
133 *
134 * Note that in the presence of reference objects, a given object that is no
135 * longer strongly reachable may have to be inspected multiple times before it
136 * can be reclaimed.
137 */
138 JNIEXPORT jlong JNICALL
139 JVM_MaxObjectInspectionAge(void);
140
141 JNIEXPORT jlong JNICALL
142 JVM_TotalMemory(void);
143
144 JNIEXPORT jlong JNICALL
145 JVM_FreeMemory(void);
146
147 JNIEXPORT jlong JNICALL
148 JVM_MaxMemory(void);
149
150 JNIEXPORT jint JNICALL
151 JVM_ActiveProcessorCount(void);
152
153 JNIEXPORT void * JNICALL
154 JVM_LoadLibrary(const char *name);
155
156 JNIEXPORT void JNICALL
157 JVM_UnloadLibrary(void * handle);
158
159 JNIEXPORT void * JNICALL
160 JVM_FindLibraryEntry(void *handle, const char *name);
161
162 JNIEXPORT jboolean JNICALL
163 JVM_IsSupportedJNIVersion(jint version);
164
165 /*
166 * java.lang.Throwable
167 */
168 JNIEXPORT void JNICALL
169 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
170
171 JNIEXPORT jint JNICALL
172 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
173
174 JNIEXPORT jobject JNICALL
175 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
176
177 /*
178 * java.lang.Thread
179 */
180 JNIEXPORT void JNICALL
181 JVM_StartThread(JNIEnv *env, jobject thread);
182
183 JNIEXPORT void JNICALL
184 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
185
186 JNIEXPORT jboolean JNICALL
187 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
188
189 JNIEXPORT void JNICALL
190 JVM_SuspendThread(JNIEnv *env, jobject thread);
191
192 JNIEXPORT void JNICALL
193 JVM_ResumeThread(JNIEnv *env, jobject thread);
194
195 JNIEXPORT void JNICALL
196 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
197
198 JNIEXPORT void JNICALL
199 JVM_Yield(JNIEnv *env, jclass threadClass);
200
201 JNIEXPORT void JNICALL
202 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
203
204 JNIEXPORT jobject JNICALL
205 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
206
207 JNIEXPORT jint JNICALL
208 JVM_CountStackFrames(JNIEnv *env, jobject thread);
209
210 JNIEXPORT void JNICALL
211 JVM_Interrupt(JNIEnv *env, jobject thread);
212
213 JNIEXPORT jboolean JNICALL
214 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
215
216 JNIEXPORT jboolean JNICALL
217 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
218
219 JNIEXPORT void JNICALL
220 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
221
222 JNIEXPORT jobjectArray JNICALL
223 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
224
225 JNIEXPORT void JNICALL
226 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
227
228 /* getStackTrace() and getAllStackTraces() method */
229 JNIEXPORT jobjectArray JNICALL
230 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
231
232 /*
233 * java.lang.SecurityManager
234 */
235 JNIEXPORT jclass JNICALL
236 JVM_CurrentLoadedClass(JNIEnv *env);
237
238 JNIEXPORT jobject JNICALL
239 JVM_CurrentClassLoader(JNIEnv *env);
240
241 JNIEXPORT jobjectArray JNICALL
242 JVM_GetClassContext(JNIEnv *env);
243
244 JNIEXPORT jint JNICALL
245 JVM_ClassDepth(JNIEnv *env, jstring name);
246
247 JNIEXPORT jint JNICALL
248 JVM_ClassLoaderDepth(JNIEnv *env);
249
250 /*
251 * java.lang.Package
252 */
253 JNIEXPORT jstring JNICALL
254 JVM_GetSystemPackage(JNIEnv *env, jstring name);
255
256 JNIEXPORT jobjectArray JNICALL
257 JVM_GetSystemPackages(JNIEnv *env);
258
259 /*
260 * java.io.ObjectInputStream
261 */
262 JNIEXPORT jobject JNICALL
263 JVM_LatestUserDefinedLoader(JNIEnv *env);
264
265 /*
266 * java.lang.reflect.Array
267 */
268 JNIEXPORT jint JNICALL
269 JVM_GetArrayLength(JNIEnv *env, jobject arr);
270
271 JNIEXPORT jobject JNICALL
272 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
273
274 JNIEXPORT jvalue JNICALL
275 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
276
277 JNIEXPORT void JNICALL
278 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
279
280 JNIEXPORT void JNICALL
281 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
282 unsigned char vCode);
283
284 JNIEXPORT jobject JNICALL
285 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
286
287 JNIEXPORT jobject JNICALL
288 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
289
290 /*
291 * java.lang.Class and java.lang.ClassLoader
292 */
293
294 #define JVM_CALLER_DEPTH -1
295
296 /*
297 * Returns the immediate caller class of the native method invoking
298 * JVM_GetCallerClass. The Method.invoke and other frames due to
299 * reflection machinery are skipped.
300 *
301 * The depth parameter must be -1 (JVM_DEPTH). The caller is expected
302 * to be marked with sun.reflect.CallerSensitive. The JVM will throw
303 * an error if it is not marked propertly.
304 */
305 JNIEXPORT jclass JNICALL
306 JVM_GetCallerClass(JNIEnv *env, int depth);
307
308
309 /*
310 * Find primitive classes
311 * utf: class name
312 */
313 JNIEXPORT jclass JNICALL
314 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
315
316
317 /*
318 * Find a class from a boot class loader. Returns NULL if class not found.
319 */
320 JNIEXPORT jclass JNICALL
321 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
322
323 /*
324 * Find a class from a given class loader. Throws ClassNotFoundException.
325 * name: name of class
326 * init: whether initialization is done
327 * loader: class loader to look up the class. This may not be the same as the caller's
328 * class loader.
329 * caller: initiating class. The initiating class may be null when a security
330 * manager is not installed.
331 */
332 JNIEXPORT jclass JNICALL
333 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
334 jobject loader, jclass caller);
335
336 /*
337 * Find a class from a given class.
338 */
339 JNIEXPORT jclass JNICALL
340 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
341 jclass from);
342
343 /* Find a loaded class cached by the VM */
344 JNIEXPORT jclass JNICALL
345 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
346
347 /* Define a class */
348 JNIEXPORT jclass JNICALL
349 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
350 jsize len, jobject pd);
351
352 /* Define a class with a source (added in JDK1.5) */
353 JNIEXPORT jclass JNICALL
354 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
355 const jbyte *buf, jsize len, jobject pd,
356 const char *source);
357
358 /*
359 * Reflection support functions
360 */
361
362 JNIEXPORT jstring JNICALL
363 JVM_GetClassName(JNIEnv *env, jclass cls);
364
365 JNIEXPORT jobjectArray JNICALL
366 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
367
368 JNIEXPORT jboolean JNICALL
369 JVM_IsInterface(JNIEnv *env, jclass cls);
370
371 JNIEXPORT jobjectArray JNICALL
372 JVM_GetClassSigners(JNIEnv *env, jclass cls);
373
374 JNIEXPORT void JNICALL
375 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
376
377 JNIEXPORT jobject JNICALL
378 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
379
380 JNIEXPORT jboolean JNICALL
381 JVM_IsArrayClass(JNIEnv *env, jclass cls);
382
383 JNIEXPORT jboolean JNICALL
384 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
385
386 JNIEXPORT jint JNICALL
387 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
388
389 JNIEXPORT jobjectArray JNICALL
390 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
391
392 JNIEXPORT jclass JNICALL
393 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
394
395 /* Generics support (JDK 1.5) */
396 JNIEXPORT jstring JNICALL
397 JVM_GetClassSignature(JNIEnv *env, jclass cls);
398
399 /* Annotations support (JDK 1.5) */
400 JNIEXPORT jbyteArray JNICALL
401 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
402
403 /* Type use annotations support (JDK 1.8) */
404
405 JNIEXPORT jbyteArray JNICALL
406 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
407
408 JNIEXPORT jbyteArray JNICALL
409 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
410
411 JNIEXPORT jbyteArray JNICALL
412 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
413
414 /*
415 * New (JDK 1.4) reflection implementation
416 */
417
418 JNIEXPORT jobjectArray JNICALL
419 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
420
421 JNIEXPORT jobjectArray JNICALL
422 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
423
424 JNIEXPORT jobjectArray JNICALL
425 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
426
427 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
428 This returns the access flags for the class as specified in the
429 class file rather than searching the InnerClasses attribute (if
430 present) to find the source-level access flags. Only the values of
431 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
432 valid. */
433 JNIEXPORT jint JNICALL
434 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
435
436 /* The following two reflection routines are still needed due to startup time issues */
437 /*
438 * java.lang.reflect.Method
439 */
440 JNIEXPORT jobject JNICALL
441 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
442
443 /*
444 * java.lang.reflect.Constructor
445 */
446 JNIEXPORT jobject JNICALL
447 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
448
449 /*
450 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
451 */
452
453 JNIEXPORT jobject JNICALL
454 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
455
456 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
457 (JNIEnv *env, jobject unused, jobject jcpool);
458
459 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
460 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
461
462 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
463 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
464
465 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
466 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
467
468 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
469 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
470
471 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
472 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
473
474 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
475 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
476
477 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
478 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
479
480 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
481 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
482
483 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
484 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
485
486 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
487 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
488
489 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
490 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
491
492 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
493 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
494
495 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
496 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
497
498 /*
499 * Parameter reflection
500 */
501
502 JNIEXPORT jobjectArray JNICALL
503 JVM_GetMethodParameters(JNIEnv *env, jobject method);
504
505 /*
506 * java.security.*
507 */
508
509 JNIEXPORT jobject JNICALL
510 JVM_DoPrivileged(JNIEnv *env, jclass cls,
511 jobject action, jobject context, jboolean wrapException);
512
513 JNIEXPORT jobject JNICALL
514 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
515
516 JNIEXPORT jobject JNICALL
517 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
518
519 /*
520 * Signal support, used to implement the shutdown sequence. Every VM must
521 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
522 * (^C) and the latter for external termination (kill, system shutdown, etc.).
523 * Other platform-dependent signal values may also be supported.
524 */
525
526 JNIEXPORT void * JNICALL
527 JVM_RegisterSignal(jint sig, void *handler);
528
529 JNIEXPORT jboolean JNICALL
530 JVM_RaiseSignal(jint sig);
531
532 JNIEXPORT jint JNICALL
533 JVM_FindSignal(const char *name);
534
535 /*
536 * Retrieve the assertion directives for the specified class.
537 */
538 JNIEXPORT jboolean JNICALL
539 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
540
541 /*
542 * Retrieve the assertion directives from the VM.
543 */
544 JNIEXPORT jobject JNICALL
545 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
546
547 /*
548 * java.util.concurrent.atomic.AtomicLong
549 */
550 JNIEXPORT jboolean JNICALL
551 JVM_SupportsCX8(void);
552
553 /*
554 * com.sun.dtrace.jsdt support
555 */
556
557 #define JVM_TRACING_DTRACE_VERSION 1
558
559 /*
560 * Structure to pass one probe description to JVM
561 */
562 typedef struct {
563 jmethodID method;
564 jstring function;
565 jstring name;
566 void* reserved[4]; // for future use
567 } JVM_DTraceProbe;
568
569 /**
570 * Encapsulates the stability ratings for a DTrace provider field
571 */
572 typedef struct {
573 jint nameStability;
574 jint dataStability;
575 jint dependencyClass;
576 } JVM_DTraceInterfaceAttributes;
577
578 /*
579 * Structure to pass one provider description to JVM
580 */
581 typedef struct {
582 jstring name;
583 JVM_DTraceProbe* probes;
584 jint probe_count;
585 JVM_DTraceInterfaceAttributes providerAttributes;
586 JVM_DTraceInterfaceAttributes moduleAttributes;
587 JVM_DTraceInterfaceAttributes functionAttributes;
588 JVM_DTraceInterfaceAttributes nameAttributes;
589 JVM_DTraceInterfaceAttributes argsAttributes;
590 void* reserved[4]; // for future use
591 } JVM_DTraceProvider;
592
593 /*
594 * Get the version number the JVM was built with
595 */
596 JNIEXPORT jint JNICALL
597 JVM_DTraceGetVersion(JNIEnv* env);
598
599 /*
600 * Register new probe with given signature, return global handle
601 *
602 * The version passed in is the version that the library code was
603 * built with.
604 */
605 JNIEXPORT jlong JNICALL
606 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
607 jint providers_count, JVM_DTraceProvider* providers);
608
609 /*
610 * Check JSDT probe
611 */
612 JNIEXPORT jboolean JNICALL
613 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
614
615 /*
616 * Destroy custom DOF
617 */
618 JNIEXPORT void JNICALL
619 JVM_DTraceDispose(JNIEnv* env, jlong activation_handle);
620
621 /*
622 * Check to see if DTrace is supported by OS
623 */
624 JNIEXPORT jboolean JNICALL
625 JVM_DTraceIsSupported(JNIEnv* env);
626
627 /*************************************************************************
628 PART 2: Support for the Verifier and Class File Format Checker
629 ************************************************************************/
630 /*
631 * Return the class name in UTF format. The result is valid
632 * until JVM_ReleaseUTf is called.
633 *
634 * The caller must treat the string as a constant and not modify it
635 * in any way.
636 */
637 JNIEXPORT const char * JNICALL
638 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
639
640 /*
641 * Returns the constant pool types in the buffer provided by "types."
642 */
643 JNIEXPORT void JNICALL
644 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
645
646 /*
647 * Returns the number of Constant Pool entries.
648 */
649 JNIEXPORT jint JNICALL
650 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
651
652 /*
653 * Returns the number of *declared* fields or methods.
654 */
655 JNIEXPORT jint JNICALL
656 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
657
658 JNIEXPORT jint JNICALL
659 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
660
661 /*
662 * Returns the CP indexes of exceptions raised by a given method.
663 * Places the result in the given buffer.
664 *
665 * The method is identified by method_index.
666 */
667 JNIEXPORT void JNICALL
668 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
669 unsigned short *exceptions);
670 /*
671 * Returns the number of exceptions raised by a given method.
672 * The method is identified by method_index.
673 */
674 JNIEXPORT jint JNICALL
675 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
676
677 /*
678 * Returns the byte code sequence of a given method.
679 * Places the result in the given buffer.
680 *
681 * The method is identified by method_index.
682 */
683 JNIEXPORT void JNICALL
684 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
685 unsigned char *code);
686
687 /*
688 * Returns the length of the byte code sequence of a given method.
689 * The method is identified by method_index.
690 */
691 JNIEXPORT jint JNICALL
692 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
693
694 /*
695 * A structure used to a capture exception table entry in a Java method.
696 */
697 typedef struct {
698 jint start_pc;
699 jint end_pc;
700 jint handler_pc;
701 jint catchType;
702 } JVM_ExceptionTableEntryType;
703
704 /*
705 * Returns the exception table entry at entry_index of a given method.
706 * Places the result in the given buffer.
707 *
708 * The method is identified by method_index.
709 */
710 JNIEXPORT void JNICALL
711 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
712 jint entry_index,
713 JVM_ExceptionTableEntryType *entry);
714
715 /*
716 * Returns the length of the exception table of a given method.
717 * The method is identified by method_index.
718 */
719 JNIEXPORT jint JNICALL
720 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
721
722 /*
723 * Returns the modifiers of a given field.
724 * The field is identified by field_index.
725 */
726 JNIEXPORT jint JNICALL
727 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
728
729 /*
730 * Returns the modifiers of a given method.
731 * The method is identified by method_index.
732 */
733 JNIEXPORT jint JNICALL
734 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
735
736 /*
737 * Returns the number of local variables of a given method.
738 * The method is identified by method_index.
739 */
740 JNIEXPORT jint JNICALL
741 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
742
743 /*
744 * Returns the number of arguments (including this pointer) of a given method.
745 * The method is identified by method_index.
746 */
747 JNIEXPORT jint JNICALL
748 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
749
750 /*
751 * Returns the maximum amount of stack (in words) used by a given method.
752 * The method is identified by method_index.
753 */
754 JNIEXPORT jint JNICALL
755 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
756
757 /*
758 * Is a given method a constructor.
759 * The method is identified by method_index.
760 */
761 JNIEXPORT jboolean JNICALL
762 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
763
764 /*
765 * Is the given method generated by the VM.
766 * The method is identified by method_index.
767 */
768 JNIEXPORT jboolean JNICALL
769 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
770
771 /*
772 * Returns the name of a given method in UTF format.
773 * The result remains valid until JVM_ReleaseUTF is called.
774 *
775 * The caller must treat the string as a constant and not modify it
776 * in any way.
777 */
778 JNIEXPORT const char * JNICALL
779 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
780
781 /*
782 * Returns the signature of a given method in UTF format.
783 * The result remains valid until JVM_ReleaseUTF is called.
784 *
785 * The caller must treat the string as a constant and not modify it
786 * in any way.
787 */
788 JNIEXPORT const char * JNICALL
789 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
790
791 /*
792 * Returns the name of the field referred to at a given constant pool
793 * index.
794 *
795 * The result is in UTF format and remains valid until JVM_ReleaseUTF
796 * is called.
797 *
798 * The caller must treat the string as a constant and not modify it
799 * in any way.
800 */
801 JNIEXPORT const char * JNICALL
802 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
803
804 /*
805 * Returns the name of the method referred to at a given constant pool
806 * index.
807 *
808 * The result is in UTF format and remains valid until JVM_ReleaseUTF
809 * is called.
810 *
811 * The caller must treat the string as a constant and not modify it
812 * in any way.
813 */
814 JNIEXPORT const char * JNICALL
815 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
816
817 /*
818 * Returns the signature of the method referred to at a given constant pool
819 * index.
820 *
821 * The result is in UTF format and remains valid until JVM_ReleaseUTF
822 * is called.
823 *
824 * The caller must treat the string as a constant and not modify it
825 * in any way.
826 */
827 JNIEXPORT const char * JNICALL
828 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
829
830 /*
831 * Returns the signature of the field referred to at a given constant pool
832 * index.
833 *
834 * The result is in UTF format and remains valid until JVM_ReleaseUTF
835 * is called.
836 *
837 * The caller must treat the string as a constant and not modify it
838 * in any way.
839 */
840 JNIEXPORT const char * JNICALL
841 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
842
843 /*
844 * Returns the class name referred to at a given constant pool index.
845 *
846 * The result is in UTF format and remains valid until JVM_ReleaseUTF
847 * is called.
848 *
849 * The caller must treat the string as a constant and not modify it
850 * in any way.
851 */
852 JNIEXPORT const char * JNICALL
853 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
854
855 /*
856 * Returns the class name referred to at a given constant pool index.
857 *
858 * The constant pool entry must refer to a CONSTANT_Fieldref.
859 *
860 * The result is in UTF format and remains valid until JVM_ReleaseUTF
861 * 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_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
868
869 /*
870 * Returns the class name referred to at a given constant pool index.
871 *
872 * The constant pool entry must refer to CONSTANT_Methodref or
873 * CONSTANT_InterfaceMethodref.
874 *
875 * The result is in UTF format and remains valid until JVM_ReleaseUTF
876 * is called.
877 *
878 * The caller must treat the string as a constant and not modify it
879 * in any way.
880 */
881 JNIEXPORT const char * JNICALL
882 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
883
884 /*
885 * Returns the modifiers of a field in calledClass. The field is
886 * referred to in class cb at constant pool entry index.
887 *
888 * The caller must treat the string as a constant and not modify it
889 * in any way.
890 *
891 * Returns -1 if the field does not exist in calledClass.
892 */
893 JNIEXPORT jint JNICALL
894 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
895
896 /*
897 * Returns the modifiers of a method in calledClass. The method is
898 * referred to in class cb at constant pool entry index.
899 *
900 * Returns -1 if the method does not exist in calledClass.
901 */
902 JNIEXPORT jint JNICALL
903 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
904
905 /*
906 * Releases the UTF string obtained from the VM.
907 */
908 JNIEXPORT void JNICALL
909 JVM_ReleaseUTF(const char *utf);
910
911 /*
912 * Compare if two classes are in the same package.
913 */
914 JNIEXPORT jboolean JNICALL
915 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
916
917 /* Get classfile constants */
918 #include "classfile_constants.h"
919
920 /*
921 * A function defined by the byte-code verifier and called by the VM.
922 * This is not a function implemented in the VM.
923 *
924 * Returns JNI_FALSE if verification fails. A detailed error message
925 * will be places in msg_buf, whose length is specified by buf_len.
926 */
927 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
928 jclass cb,
929 char * msg_buf,
930 jint buf_len);
931
932
933 /*
934 * Support for a VM-independent class format checker.
935 */
936 typedef struct {
937 unsigned long code; /* byte code */
938 unsigned long excs; /* exceptions */
939 unsigned long etab; /* catch table */
940 unsigned long lnum; /* line number */
941 unsigned long lvar; /* local vars */
942 } method_size_info;
943
944 typedef struct {
945 unsigned int constants; /* constant pool */
946 unsigned int fields;
947 unsigned int methods;
948 unsigned int interfaces;
949 unsigned int fields2; /* number of static 2-word fields */
950 unsigned int innerclasses; /* # of records in InnerClasses attr */
951
952 method_size_info clinit; /* memory used in clinit */
953 method_size_info main; /* used everywhere else */
954 } class_size_info;
955
956 /*
957 * Functions defined in libjava.so to perform string conversions.
958 *
959 */
960
961 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
962
963 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
964
965 /* This is the function defined in libjava.so that performs class
966 * format checks. This functions fills in size information about
967 * the class file and returns:
968 *
969 * 0: good
970 * -1: out of memory
971 * -2: bad format
972 * -3: unsupported version
973 * -4: bad class name
974 */
975
976 typedef jint (*check_format_fn_t)(char *class_name,
977 unsigned char *data,
978 unsigned int data_size,
979 class_size_info *class_size,
980 char *message_buffer,
981 jint buffer_length,
982 jboolean measure_only,
983 jboolean check_relaxed);
984
985 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
986 JVM_ACC_FINAL | \
987 JVM_ACC_SUPER | \
988 JVM_ACC_INTERFACE | \
989 JVM_ACC_ABSTRACT | \
990 JVM_ACC_ANNOTATION | \
991 JVM_ACC_ENUM | \
992 JVM_ACC_SYNTHETIC)
993
994 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
995 JVM_ACC_PRIVATE | \
996 JVM_ACC_PROTECTED | \
997 JVM_ACC_STATIC | \
998 JVM_ACC_FINAL | \
999 JVM_ACC_VOLATILE | \
1000 JVM_ACC_TRANSIENT | \
1001 JVM_ACC_ENUM | \
1002 JVM_ACC_SYNTHETIC)
1003
1004 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1005 JVM_ACC_PRIVATE | \
1006 JVM_ACC_PROTECTED | \
1007 JVM_ACC_STATIC | \
1008 JVM_ACC_FINAL | \
1009 JVM_ACC_SYNCHRONIZED | \
1010 JVM_ACC_BRIDGE | \
1011 JVM_ACC_VARARGS | \
1012 JVM_ACC_NATIVE | \
1013 JVM_ACC_ABSTRACT | \
1014 JVM_ACC_STRICT | \
1015 JVM_ACC_SYNTHETIC)
1016
1017 /*
1018 * This is the function defined in libjava.so to perform path
1019 * canonicalization. VM call this function before opening jar files
1020 * to load system classes.
1021 *
1022 */
1023
1024 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1025
1026 /*************************************************************************
1027 PART 3: I/O and Network Support
1028 ************************************************************************/
1029
1030 /*
1031 * Convert a pathname into native format. This function does syntactic
1032 * cleanup, such as removing redundant separator characters. It modifies
1033 * the given pathname string in place.
1034 */
1035 JNIEXPORT char * JNICALL
1036 JVM_NativePath(char *);
1037
1038 /*
1039 * The standard printing functions supported by the Java VM. (Should they
1040 * be renamed to JVM_* in the future?
1041 */
1042
1043 /*
1044 * BE CAREFUL! The following functions do not implement the
1045 * full feature set of standard C printf formats.
1046 */
1047 int
1048 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1049
1050 int
1051 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1052
1053 int
1054 jio_fprintf(FILE *, const char *fmt, ...);
1055
1056 int
1057 jio_vfprintf(FILE *, const char *fmt, va_list args);
1058
1059
1060 JNIEXPORT void * JNICALL
1061 JVM_RawMonitorCreate(void);
1062
1063 JNIEXPORT void JNICALL
1064 JVM_RawMonitorDestroy(void *mon);
1065
1066 JNIEXPORT jint JNICALL
1067 JVM_RawMonitorEnter(void *mon);
1068
1069 JNIEXPORT void JNICALL
1070 JVM_RawMonitorExit(void *mon);
1071
1072 /*
1073 * java.lang.management support
1074 */
1075 JNIEXPORT void* JNICALL
1076 JVM_GetManagement(jint version);
1077
1078 /*
1079 * com.sun.tools.attach.VirtualMachine support
1080 *
1081 * Initialize the agent properties with the properties maintained in the VM.
1082 */
1083 JNIEXPORT jobject JNICALL
1084 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1085
1086 JNIEXPORT jstring JNICALL
1087 JVM_GetTemporaryDirectory(JNIEnv *env);
1088
1089 /* Generics reflection support.
1090 *
1091 * Returns information about the given class's EnclosingMethod
1092 * attribute, if present, or null if the class had no enclosing
1093 * method.
1094 *
1095 * If non-null, the returned array contains three elements. Element 0
1096 * is the java.lang.Class of which the enclosing method is a member,
1097 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1098 * method's name and descriptor, respectively.
1099 */
1100 JNIEXPORT jobjectArray JNICALL
1101 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1102
1103 /* =========================================================================
1104 * The following defines a private JVM interface that the JDK can query
1105 * for the JVM version and capabilities. sun.misc.Version defines
1106 * the methods for getting the VM version and its capabilities.
1107 *
1108 * When a new bit is added, the following should be updated to provide
1109 * access to the new capability:
1110 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1111 * SDK: Version class
1112 *
1113 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1114 * JVM to query for the JDK version and capabilities.
1115 *
1116 * When a new bit is added, the following should be updated to provide
1117 * access to the new capability:
1118 * HS: JDK_Version class
1119 * SDK: JDK_GetVersionInfo0
1120 *
1121 * ==========================================================================
1122 */
1123 typedef struct {
1124 /* Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx */
1125 unsigned int jvm_version; /* Consists of major, minor, micro (n.n.n) */
1126 /* and build number (xx) */
1127 unsigned int update_version : 8; /* Update release version (uu) */
1128 unsigned int special_update_version : 8; /* Special update release version (c)*/
1129 unsigned int reserved1 : 16;
1130 unsigned int reserved2;
1131
1132 /* The following bits represents JVM supports that JDK has dependency on.
1133 * JDK can use these bits to determine which JVM version
1134 * and support it has to maintain runtime compatibility.
1135 *
1136 * When a new bit is added in a minor or update release, make sure
1137 * the new bit is also added in the main/baseline.
1138 */
1139 unsigned int is_attach_supported : 1;
1140 unsigned int : 31;
1141 unsigned int : 32;
1142 unsigned int : 32;
1143 } jvm_version_info;
1144
1145 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1146 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1147 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1148
1149 /* Build number is available only for RE builds.
1150 * It will be zero for internal builds.
1151 */
1152 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1153
1154 JNIEXPORT void JNICALL
1155 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1156
1157 typedef struct {
1158 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
1159 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */
1160 /* and build number (xx) */
1161 unsigned int update_version : 8; /* Update release version (uu) */
1162 unsigned int special_update_version : 8; /* Special update release version (c)*/
1163 unsigned int reserved1 : 16;
1164 unsigned int reserved2;
1165
1166 /* The following bits represents new JDK supports that VM has dependency on.
1167 * VM implementation can use these bits to determine which JDK version
1168 * and support it has to maintain runtime compatibility.
1169 *
1170 * When a new bit is added in a minor or update release, make sure
1171 * the new bit is also added in the main/baseline.
1172 */
1173 unsigned int thread_park_blocker : 1;
1174 unsigned int post_vm_init_hook_enabled : 1;
1175 unsigned int pending_list_uses_discovered_field : 1;
1176 unsigned int : 29;
1177 unsigned int : 32;
1178 unsigned int : 32;
1179 } jdk_version_info;
1180
1181 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1182 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1183 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1184
1185 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
1186 * It will be zero for internal builds.
1187 */
1188 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1189
1190 /*
1191 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1192 * that is dynamically looked up by JVM.
1193 */
1194 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1195
1196 /*
1197 * This structure is used by the launcher to get the default thread
1198 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1199 * version of 1.1. As it is not supported otherwise, it has been removed
1200 * from jni.h
1201 */
1202 typedef struct JDK1_1InitArgs {
1203 jint version;
1204
1205 char **properties;
1206 jint checkSource;
1207 jint nativeStackSize;
1208 jint javaStackSize;
1209 jint minHeapSize;
1210 jint maxHeapSize;
1211 jint verifyMode;
1212 char *classpath;
1213
1214 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1215 void (JNICALL *exit)(jint code);
1216 void (JNICALL *abort)(void);
1217
1218 jint enableClassGC;
1219 jint enableVerboseGC;
1220 jint disableAsyncGC;
1221 jint verbose;
1222 jboolean debugging;
1223 jint debugPort;
1224 } JDK1_1InitArgs;
1225
1226
1227 #ifdef __cplusplus
1228 } /* extern "C" */
1229
1230 #endif /* __cplusplus */
1231
1232 #endif /* !_JAVASOFT_JVM_H_ */