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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_PRIMS_JVM_H
26 #define SHARE_VM_PRIMS_JVM_H
27
28 #include "prims/jni.h"
29 #include "utilities/macros.hpp"
30
31 #include OS_HEADER_H(jvm)
32
33 #ifndef _JAVASOFT_JVM_H_
34 #define _JAVASOFT_JVM_H_
35
36 // HotSpot integration note:
37 //
38 // This file and jvm.h used with the JDK are identical,
39 // except for the three includes removed below
40
41 // #include <sys/stat.h>
42 // #include "jni.h"
43 // #include "jvm_md.h"
44
45
46 #ifdef __cplusplus
47 extern "C" {
48 #endif
49
50 /*
51 * This file contains additional functions exported from the VM.
52 * These functions are complementary to the standard JNI support.
53 * There are three parts to this file:
54 *
55 * First, this file contains the VM-related functions needed by native
56 * libraries in the standard Java API. For example, the java.lang.Object
57 * class needs VM-level functions that wait for and notify monitors.
58 *
59 * Second, this file contains the functions and constant definitions
60 * needed by the byte code verifier and class file format checker.
61 * These functions allow the verifier and format checker to be written
62 * in a VM-independent way.
63 *
64 * Third, this file contains various I/O and nerwork operations needed
65 * by the standard Java I/O and network APIs.
66 */
67
68 /*
69 * Bump the version number when either of the following happens:
70 *
71 * 1. There is a change in JVM_* functions.
72 *
73 * 2. There is a change in the contract between VM and Java classes.
74 * For example, if the VM relies on a new private field in Thread
75 * class.
76 */
77
78 #define JVM_INTERFACE_VERSION 5
79
80 JNIEXPORT jobjectArray JNICALL
81 JVM_GetMethodParameters(JNIEnv *env, jobject method);
82
83 JNIEXPORT jint JNICALL
84 JVM_GetInterfaceVersion(void);
85
86 /*************************************************************************
87 PART 1: Functions for Native Libraries
88 ************************************************************************/
89 /*
90 * java.lang.Object
91 */
92 JNIEXPORT jint JNICALL
93 JVM_IHashCode(JNIEnv *env, jobject obj);
94
95 JNIEXPORT void JNICALL
96 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
97
98 JNIEXPORT void JNICALL
99 JVM_MonitorNotify(JNIEnv *env, jobject obj);
100
101 JNIEXPORT void JNICALL
102 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
103
104 JNIEXPORT jobject JNICALL
105 JVM_Clone(JNIEnv *env, jobject obj);
106
107 /*
108 * java.lang.String
109 */
110 JNIEXPORT jstring JNICALL
111 JVM_InternString(JNIEnv *env, jstring str);
112
113 /*
114 * java.lang.System
115 */
116 JNIEXPORT jlong JNICALL
117 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
118
119 JNIEXPORT jlong JNICALL
120 JVM_NanoTime(JNIEnv *env, jclass ignored);
121
122 JNIEXPORT jlong JNICALL
123 JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs);
124
125 JNIEXPORT void JNICALL
126 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
127 jobject dst, jint dst_pos, jint length);
128
129 JNIEXPORT jobject JNICALL
130 JVM_InitProperties(JNIEnv *env, jobject p);
131
132 /*
133 * java.lang.Runtime
134 */
135
136 JNIEXPORT void JNICALL
137 JVM_Halt(jint code);
138
139 JNIEXPORT void JNICALL
140 JVM_GC(void);
141
142 /* Returns the number of real-time milliseconds that have elapsed since the
143 * least-recently-inspected heap object was last inspected by the garbage
144 * collector.
145 *
146 * For simple stop-the-world collectors this value is just the time
147 * since the most recent collection. For generational collectors it is the
148 * time since the oldest generation was most recently collected. Other
149 * collectors are free to return a pessimistic estimate of the elapsed time, or
150 * simply the time since the last full collection was performed.
151 *
152 * Note that in the presence of reference objects, a given object that is no
153 * longer strongly reachable may have to be inspected multiple times before it
154 * can be reclaimed.
155 */
156 JNIEXPORT jlong JNICALL
157 JVM_MaxObjectInspectionAge(void);
158
159 JNIEXPORT jlong JNICALL
160 JVM_TotalMemory(void);
161
162 JNIEXPORT jlong JNICALL
163 JVM_FreeMemory(void);
164
165 JNIEXPORT jlong JNICALL
166 JVM_MaxMemory(void);
167
168 JNIEXPORT jint JNICALL
169 JVM_ActiveProcessorCount(void);
170
171 JNIEXPORT void * JNICALL
172 JVM_LoadLibrary(const char *name);
173
174 JNIEXPORT void JNICALL
175 JVM_UnloadLibrary(void * handle);
176
177 JNIEXPORT void * JNICALL
178 JVM_FindLibraryEntry(void *handle, const char *name);
179
180 JNIEXPORT jboolean JNICALL
181 JVM_IsSupportedJNIVersion(jint version);
182
183 JNIEXPORT jobjectArray JNICALL
184 JVM_GetVmArguments(JNIEnv *env);
185
186 /*
187 * java.lang.Throwable
188 */
189 JNIEXPORT void JNICALL
190 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
191
192 JNIEXPORT void JNICALL
193 JVM_GetStackTraceElements(JNIEnv *env, jobject throwable, jobjectArray elements);
194
195 /*
196 * java.lang.StackWalker
197 */
198 enum {
199 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x2,
200 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
201 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
202 };
203
204 JNIEXPORT jobject JNICALL
205 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
206 jint skip_frames, jint frame_count, jint start_index,
207 jobjectArray frames);
208
209 JNIEXPORT jint JNICALL
210 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
211 jint frame_count, jint start_index,
212 jobjectArray frames);
213
214 JNIEXPORT void JNICALL
215 JVM_ToStackTraceElement(JNIEnv* env, jobject frame, jobject stackElement);
216
217 /*
218 * java.lang.Thread
219 */
220 JNIEXPORT void JNICALL
221 JVM_StartThread(JNIEnv *env, jobject thread);
222
223 JNIEXPORT void JNICALL
224 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
225
226 JNIEXPORT jboolean JNICALL
227 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
228
229 JNIEXPORT void JNICALL
230 JVM_SuspendThread(JNIEnv *env, jobject thread);
231
232 JNIEXPORT void JNICALL
233 JVM_ResumeThread(JNIEnv *env, jobject thread);
234
235 JNIEXPORT void JNICALL
236 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
237
238 JNIEXPORT void JNICALL
239 JVM_Yield(JNIEnv *env, jclass threadClass);
240
241 JNIEXPORT void JNICALL
242 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
243
244 JNIEXPORT jobject JNICALL
245 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
246
247 JNIEXPORT jint JNICALL
248 JVM_CountStackFrames(JNIEnv *env, jobject thread);
249
250 JNIEXPORT void JNICALL
251 JVM_Interrupt(JNIEnv *env, jobject thread);
252
253 JNIEXPORT jboolean JNICALL
254 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
255
256 JNIEXPORT jboolean JNICALL
257 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
258
259 JNIEXPORT void JNICALL
260 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
261
262 JNIEXPORT jobjectArray JNICALL
263 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
264
265 JNIEXPORT void JNICALL
266 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
267
268 /* getStackTrace() and getAllStackTraces() method */
269 JNIEXPORT jobjectArray JNICALL
270 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
271
272 /*
273 * java.lang.SecurityManager
274 */
275 JNIEXPORT jclass JNICALL
276 JVM_CurrentLoadedClass(JNIEnv *env);
277
278 JNIEXPORT jobject JNICALL
279 JVM_CurrentClassLoader(JNIEnv *env);
280
281 JNIEXPORT jobjectArray JNICALL
282 JVM_GetClassContext(JNIEnv *env);
283
284 JNIEXPORT jint JNICALL
285 JVM_ClassDepth(JNIEnv *env, jstring name);
286
287 JNIEXPORT jint JNICALL
288 JVM_ClassLoaderDepth(JNIEnv *env);
289
290 /*
291 * java.lang.Package
292 */
293 JNIEXPORT jstring JNICALL
294 JVM_GetSystemPackage(JNIEnv *env, jstring name);
295
296 JNIEXPORT jobjectArray JNICALL
297 JVM_GetSystemPackages(JNIEnv *env);
298
299 /*
300 * java.io.ObjectInputStream
301 */
302 JNIEXPORT jobject JNICALL
303 JVM_LatestUserDefinedLoader(JNIEnv *env);
304
305 /*
306 * java.lang.reflect.Array
307 */
308 JNIEXPORT jint JNICALL
309 JVM_GetArrayLength(JNIEnv *env, jobject arr);
310
311 JNIEXPORT jobject JNICALL
312 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
313
314 JNIEXPORT jvalue JNICALL
315 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
316
317 JNIEXPORT void JNICALL
318 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
319
320 JNIEXPORT void JNICALL
321 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
322 unsigned char vCode);
323
324 JNIEXPORT jobject JNICALL
325 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
326
327 JNIEXPORT jobject JNICALL
328 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
329
330 /*
331 * java.lang.Class and java.lang.ClassLoader
332 */
333
334 #define JVM_CALLER_DEPTH -1
335
336 /*
337 * Returns the class in which the code invoking the native method
338 * belongs.
339 *
340 * Note that in JDK 1.1, native methods did not create a frame.
341 * In 1.2, they do. Therefore native methods like Class.forName
342 * can no longer look at the current frame for the caller class.
343 */
344 JNIEXPORT jclass JNICALL
345 JVM_GetCallerClass(JNIEnv *env, int n);
346
347 /*
348 * Find primitive classes
349 * utf: class name
350 */
351 JNIEXPORT jclass JNICALL
352 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
353
354 /*
355 * 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_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module);
408
409 JNIEXPORT void JNICALL
410 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package);
411
412 JNIEXPORT void JNICALL
413 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package);
414
415 JNIEXPORT void JNICALL
416 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
417
418 JNIEXPORT jboolean JNICALL
419 JVM_CanReadModule(JNIEnv *env, jobject asking_module, jobject source_module);
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 loader, jstring package);
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 /* Annotations support (JDK 1.6) */
479
480 /* Type use annotations support (JDK 1.8) */
481
482 JNIEXPORT jbyteArray JNICALL
483 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
484
485 // field is a handle to a java.lang.reflect.Field object
486 JNIEXPORT jbyteArray JNICALL
487 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
488
489 // method is a handle to a java.lang.reflect.Method object
490 JNIEXPORT jbyteArray JNICALL
491 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
492
493 /*
494 * New (JDK 1.4) reflection implementation
495 */
496
497 JNIEXPORT jobjectArray JNICALL
498 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
499
500 JNIEXPORT jobjectArray JNICALL
501 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
502
503 JNIEXPORT jobjectArray JNICALL
504 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
505
506 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
507 This returns the access flags for the class as specified in the
508 class file rather than searching the InnerClasses attribute (if
509 present) to find the source-level access flags. Only the values of
510 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
511 valid. */
512 JNIEXPORT jint JNICALL
513 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
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 obj, jobject unused);
524
525 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
526 (JNIEnv *env, jobject obj, jobject unused, jint index);
527
528 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
529 (JNIEnv *env, jobject obj, jobject unused, jint index);
530
531 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
532 (JNIEnv *env, jobject obj, jobject unused, jint index);
533
534 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
535 (JNIEnv *env, jobject obj, jobject unused, jint index);
536
537 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
538 (JNIEnv *env, jobject obj, jobject unused, jint index);
539
540 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
541 (JNIEnv *env, jobject obj, jobject unused, jint index);
542
543 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
544 (JNIEnv *env, jobject obj, jobject unused, jint index);
545
546 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
547 (JNIEnv *env, jobject obj, jobject unused, jint index);
548
549 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
550 (JNIEnv *env, jobject obj, jobject unused, jint index);
551
552 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
553 (JNIEnv *env, jobject obj, jobject unused, jint index);
554
555 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
556 (JNIEnv *env, jobject obj, jobject unused, jint index);
557
558 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
559 (JNIEnv *env, jobject obj, jobject unused, jint index);
560
561 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
562 (JNIEnv *env, jobject obj, jobject unused, jint index);
563
564 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
565 (JNIEnv *env, jobject obj, jobject unused, jint index);
566
567 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
568 (JNIEnv *env, jobject obj, jobject unused, jint index);
569
570 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
571 (JNIEnv *env, jobject obj, jobject unused, jint index);
572
573 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
574 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
575
576 /*
577 * java.security.*
578 */
579
580 JNIEXPORT jobject JNICALL
581 JVM_DoPrivileged(JNIEnv *env, jclass cls,
582 jobject action, jobject context, jboolean wrapException);
583
584 JNIEXPORT jobject JNICALL
585 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
586
587 JNIEXPORT jobject JNICALL
588 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
589
590 /*
591 * Signal support, used to implement the shutdown sequence. Every VM must
592 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
593 * (^C) and the latter for external termination (kill, system shutdown, etc.).
594 * Other platform-dependent signal values may also be supported.
595 */
596
597 JNIEXPORT void * JNICALL
598 JVM_RegisterSignal(jint sig, void *handler);
599
600 JNIEXPORT jboolean JNICALL
601 JVM_RaiseSignal(jint sig);
602
603 JNIEXPORT jint JNICALL
604 JVM_FindSignal(const char *name);
605
606 /*
607 * Retrieve the assertion directives for the specified class.
608 */
609 JNIEXPORT jboolean JNICALL
610 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
611
612 /*
613 * Retrieve the assertion directives from the VM.
614 */
615 JNIEXPORT jobject JNICALL
616 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
617
618 /*
619 * java.util.concurrent.atomic.AtomicLong
620 */
621 JNIEXPORT jboolean JNICALL
622 JVM_SupportsCX8(void);
623
624 /*************************************************************************
625 PART 2: Support for the Verifier and Class File Format Checker
626 ************************************************************************/
627 /*
628 * Return the class name in UTF format. The result is valid
629 * until JVM_ReleaseUTf is called.
630 *
631 * The caller must treat the string as a constant and not modify it
632 * in any way.
633 */
634 JNIEXPORT const char * JNICALL
635 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
636
637 /*
638 * Returns the constant pool types in the buffer provided by "types."
639 */
640 JNIEXPORT void JNICALL
641 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
642
643 /*
644 * Returns the number of Constant Pool entries.
645 */
646 JNIEXPORT jint JNICALL
647 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
648
649 /*
650 * Returns the number of *declared* fields or methods.
651 */
652 JNIEXPORT jint JNICALL
653 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
654
655 JNIEXPORT jint JNICALL
656 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
657
658 /*
659 * Returns the CP indexes of exceptions raised by a given method.
660 * Places the result in the given buffer.
661 *
662 * The method is identified by method_index.
663 */
664 JNIEXPORT void JNICALL
665 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
666 unsigned short *exceptions);
667 /*
668 * Returns the number of exceptions raised by a given method.
669 * The method is identified by method_index.
670 */
671 JNIEXPORT jint JNICALL
672 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
673
674 /*
675 * Returns the byte code sequence of a given method.
676 * Places the result in the given buffer.
677 *
678 * The method is identified by method_index.
679 */
680 JNIEXPORT void JNICALL
681 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
682 unsigned char *code);
683
684 /*
685 * Returns the length of the byte code sequence of a given method.
686 * The method is identified by method_index.
687 */
688 JNIEXPORT jint JNICALL
689 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
690
691 /*
692 * A structure used to a capture exception table entry in a Java method.
693 */
694 typedef struct {
695 jint start_pc;
696 jint end_pc;
697 jint handler_pc;
698 jint catchType;
699 } JVM_ExceptionTableEntryType;
700
701 /*
702 * Returns the exception table entry at entry_index of a given method.
703 * Places the result in the given buffer.
704 *
705 * The method is identified by method_index.
706 */
707 JNIEXPORT void JNICALL
708 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
709 jint entry_index,
710 JVM_ExceptionTableEntryType *entry);
711
712 /*
713 * Returns the length of the exception table of a given method.
714 * The method is identified by method_index.
715 */
716 JNIEXPORT jint JNICALL
717 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
718
719 /*
720 * Returns the modifiers of a given field.
721 * The field is identified by field_index.
722 */
723 JNIEXPORT jint JNICALL
724 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
725
726 /*
727 * Returns the modifiers of a given method.
728 * The method is identified by method_index.
729 */
730 JNIEXPORT jint JNICALL
731 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
732
733 /*
734 * Returns the number of local variables of a given method.
735 * The method is identified by method_index.
736 */
737 JNIEXPORT jint JNICALL
738 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
739
740 /*
741 * Returns the number of arguments (including this pointer) of a given method.
742 * The method is identified by method_index.
743 */
744 JNIEXPORT jint JNICALL
745 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
746
747 /*
748 * Returns the maximum amount of stack (in words) used by a given method.
749 * The method is identified by method_index.
750 */
751 JNIEXPORT jint JNICALL
752 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
753
754 /*
755 * Is a given method a constructor.
756 * The method is identified by method_index.
757 */
758 JNIEXPORT jboolean JNICALL
759 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
760
761 /*
762 * Is the given method generated by the VM.
763 * The method is identified by method_index.
764 */
765 JNIEXPORT jboolean JNICALL
766 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
767
768 /*
769 * Returns the name of a given method in UTF format.
770 * The result remains valid until JVM_ReleaseUTF is called.
771 *
772 * The caller must treat the string as a constant and not modify it
773 * in any way.
774 */
775 JNIEXPORT const char * JNICALL
776 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
777
778 /*
779 * Returns the signature of a given method in UTF format.
780 * The result remains valid until JVM_ReleaseUTF is called.
781 *
782 * The caller must treat the string as a constant and not modify it
783 * in any way.
784 */
785 JNIEXPORT const char * JNICALL
786 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
787
788 /*
789 * Returns the name of the field refered to at a given constant pool
790 * index.
791 *
792 * The result is in UTF format and remains valid until JVM_ReleaseUTF
793 * is called.
794 *
795 * The caller must treat the string as a constant and not modify it
796 * in any way.
797 */
798 JNIEXPORT const char * JNICALL
799 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
800
801 /*
802 * Returns the name of the method refered to at a given constant pool
803 * index.
804 *
805 * The result is in UTF format and remains valid until JVM_ReleaseUTF
806 * is called.
807 *
808 * The caller must treat the string as a constant and not modify it
809 * in any way.
810 */
811 JNIEXPORT const char * JNICALL
812 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
813
814 /*
815 * Returns the signature of the method refered to at a given constant pool
816 * index.
817 *
818 * The result is in UTF format and remains valid until JVM_ReleaseUTF
819 * is called.
820 *
821 * The caller must treat the string as a constant and not modify it
822 * in any way.
823 */
824 JNIEXPORT const char * JNICALL
825 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
826
827 /*
828 * Returns the signature of the field refered to at a given constant pool
829 * index.
830 *
831 * The result is in UTF format and remains valid until JVM_ReleaseUTF
832 * is called.
833 *
834 * The caller must treat the string as a constant and not modify it
835 * in any way.
836 */
837 JNIEXPORT const char * JNICALL
838 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
839
840 /*
841 * Returns the class name refered to at a given constant pool index.
842 *
843 * The result is in UTF format and remains valid until JVM_ReleaseUTF
844 * is called.
845 *
846 * The caller must treat the string as a constant and not modify it
847 * in any way.
848 */
849 JNIEXPORT const char * JNICALL
850 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
851
852 /*
853 * Returns the class name refered to at a given constant pool index.
854 *
855 * The constant pool entry must refer to a CONSTANT_Fieldref.
856 *
857 * The result is in UTF format and remains valid until JVM_ReleaseUTF
858 * is called.
859 *
860 * The caller must treat the string as a constant and not modify it
861 * in any way.
862 */
863 JNIEXPORT const char * JNICALL
864 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
865
866 /*
867 * Returns the class name refered to at a given constant pool index.
868 *
869 * The constant pool entry must refer to CONSTANT_Methodref or
870 * CONSTANT_InterfaceMethodref.
871 *
872 * The result is in UTF format and remains valid until JVM_ReleaseUTF
873 * is called.
874 *
875 * The caller must treat the string as a constant and not modify it
876 * in any way.
877 */
878 JNIEXPORT const char * JNICALL
879 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
880
881 /*
882 * Returns the modifiers of a field in calledClass. The field is
883 * referred to in class cb at constant pool entry index.
884 *
885 * The caller must treat the string as a constant and not modify it
886 * in any way.
887 *
888 * Returns -1 if the field does not exist in calledClass.
889 */
890 JNIEXPORT jint JNICALL
891 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
892
893 /*
894 * Returns the modifiers of a method in calledClass. The method is
895 * referred to in class cb at constant pool entry index.
896 *
897 * Returns -1 if the method does not exist in calledClass.
898 */
899 JNIEXPORT jint JNICALL
900 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
901
902 /*
903 * Releases the UTF string obtained from the VM.
904 */
905 JNIEXPORT void JNICALL
906 JVM_ReleaseUTF(const char *utf);
907
908 /*
909 * Compare if two classes are in the same package.
910 */
911 JNIEXPORT jboolean JNICALL
912 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
913
914 /* Constants in class files */
915
916 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */
917 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */
918 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */
919 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */
920 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */
921 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */
922 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */
923 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */
924 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */
925 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */
926 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */
927 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */
928 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */
929 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */
930 #define JVM_ACC_STRICT 0x0800 /* strict floating point */
931 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */
932 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */
933 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */
934 #define JVM_ACC_MODULE 0x8000 /* module-info class file */
935
936 #define JVM_ACC_PUBLIC_BIT 0
937 #define JVM_ACC_PRIVATE_BIT 1
938 #define JVM_ACC_PROTECTED_BIT 2
939 #define JVM_ACC_STATIC_BIT 3
940 #define JVM_ACC_FINAL_BIT 4
941 #define JVM_ACC_SYNCHRONIZED_BIT 5
942 #define JVM_ACC_SUPER_BIT 5
943 #define JVM_ACC_VOLATILE_BIT 6
944 #define JVM_ACC_BRIDGE_BIT 6
945 #define JVM_ACC_TRANSIENT_BIT 7
946 #define JVM_ACC_VARARGS_BIT 7
947 #define JVM_ACC_NATIVE_BIT 8
948 #define JVM_ACC_INTERFACE_BIT 9
949 #define JVM_ACC_ABSTRACT_BIT 10
950 #define JVM_ACC_STRICT_BIT 11
951 #define JVM_ACC_SYNTHETIC_BIT 12
952 #define JVM_ACC_ANNOTATION_BIT 13
953 #define JVM_ACC_ENUM_BIT 14
954
955 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
956 enum {
957 JVM_CONSTANT_Utf8 = 1,
958 JVM_CONSTANT_Unicode, /* unused */
959 JVM_CONSTANT_Integer,
960 JVM_CONSTANT_Float,
961 JVM_CONSTANT_Long,
962 JVM_CONSTANT_Double,
963 JVM_CONSTANT_Class,
964 JVM_CONSTANT_String,
965 JVM_CONSTANT_Fieldref,
966 JVM_CONSTANT_Methodref,
967 JVM_CONSTANT_InterfaceMethodref,
968 JVM_CONSTANT_NameAndType,
969 JVM_CONSTANT_MethodHandle = 15, // JSR 292
970 JVM_CONSTANT_MethodType = 16, // JSR 292
971 //JVM_CONSTANT_(unused) = 17, // JSR 292 early drafts only
972 JVM_CONSTANT_InvokeDynamic = 18, // JSR 292
973 JVM_CONSTANT_ExternalMax = 18 // Last tag found in classfiles
974 };
975
976 /* JVM_CONSTANT_MethodHandle subtypes */
977 enum {
978 JVM_REF_getField = 1,
979 JVM_REF_getStatic = 2,
980 JVM_REF_putField = 3,
981 JVM_REF_putStatic = 4,
982 JVM_REF_invokeVirtual = 5,
983 JVM_REF_invokeStatic = 6,
984 JVM_REF_invokeSpecial = 7,
985 JVM_REF_newInvokeSpecial = 8,
986 JVM_REF_invokeInterface = 9
987 };
988
989 /* Used in the newarray instruction. */
990
991 #define JVM_T_BOOLEAN 4
992 #define JVM_T_CHAR 5
993 #define JVM_T_FLOAT 6
994 #define JVM_T_DOUBLE 7
995 #define JVM_T_BYTE 8
996 #define JVM_T_SHORT 9
997 #define JVM_T_INT 10
998 #define JVM_T_LONG 11
999
1000 /* JVM method signatures */
1001
1002 #define JVM_SIGNATURE_ARRAY '['
1003 #define JVM_SIGNATURE_BYTE 'B'
1004 #define JVM_SIGNATURE_CHAR 'C'
1005 #define JVM_SIGNATURE_CLASS 'L'
1006 #define JVM_SIGNATURE_ENDCLASS ';'
1007 #define JVM_SIGNATURE_ENUM 'E'
1008 #define JVM_SIGNATURE_FLOAT 'F'
1009 #define JVM_SIGNATURE_DOUBLE 'D'
1010 #define JVM_SIGNATURE_FUNC '('
1011 #define JVM_SIGNATURE_ENDFUNC ')'
1012 #define JVM_SIGNATURE_INT 'I'
1013 #define JVM_SIGNATURE_LONG 'J'
1014 #define JVM_SIGNATURE_SHORT 'S'
1015 #define JVM_SIGNATURE_VOID 'V'
1016 #define JVM_SIGNATURE_BOOLEAN 'Z'
1017
1018 /*
1019 * A function defined by the byte-code verifier and called by the VM.
1020 * This is not a function implemented in the VM.
1021 *
1022 * Returns JNI_FALSE if verification fails. A detailed error message
1023 * will be places in msg_buf, whose length is specified by buf_len.
1024 */
1025 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1026 jclass cb,
1027 char * msg_buf,
1028 jint buf_len);
1029
1030
1031 /*
1032 * Support for a VM-independent class format checker.
1033 */
1034 typedef struct {
1035 unsigned long code; /* byte code */
1036 unsigned long excs; /* exceptions */
1037 unsigned long etab; /* catch table */
1038 unsigned long lnum; /* line number */
1039 unsigned long lvar; /* local vars */
1040 } method_size_info;
1041
1042 typedef struct {
1043 unsigned int constants; /* constant pool */
1044 unsigned int fields;
1045 unsigned int methods;
1046 unsigned int interfaces;
1047 unsigned int fields2; /* number of static 2-word fields */
1048 unsigned int innerclasses; /* # of records in InnerClasses attr */
1049
1050 method_size_info clinit; /* memory used in clinit */
1051 method_size_info main; /* used everywhere else */
1052 } class_size_info;
1053
1054 /*
1055 * Functions defined in libjava.so to perform string conversions.
1056 *
1057 */
1058
1059 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1060
1061 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1062
1063 /* This is the function defined in libjava.so that performs class
1064 * format checks. This functions fills in size information about
1065 * the class file and returns:
1066 *
1067 * 0: good
1068 * -1: out of memory
1069 * -2: bad format
1070 * -3: unsupported version
1071 * -4: bad class name
1072 */
1073
1074 typedef jint (*check_format_fn_t)(char *class_name,
1075 unsigned char *data,
1076 unsigned int data_size,
1077 class_size_info *class_size,
1078 char *message_buffer,
1079 jint buffer_length,
1080 jboolean measure_only,
1081 jboolean check_relaxed);
1082
1083 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1084 JVM_ACC_FINAL | \
1085 JVM_ACC_SUPER | \
1086 JVM_ACC_INTERFACE | \
1087 JVM_ACC_ABSTRACT | \
1088 JVM_ACC_ANNOTATION | \
1089 JVM_ACC_ENUM | \
1090 JVM_ACC_SYNTHETIC)
1091
1092 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1093 JVM_ACC_PRIVATE | \
1094 JVM_ACC_PROTECTED | \
1095 JVM_ACC_STATIC | \
1096 JVM_ACC_FINAL | \
1097 JVM_ACC_VOLATILE | \
1098 JVM_ACC_TRANSIENT | \
1099 JVM_ACC_ENUM | \
1100 JVM_ACC_SYNTHETIC)
1101
1102 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1103 JVM_ACC_PRIVATE | \
1104 JVM_ACC_PROTECTED | \
1105 JVM_ACC_STATIC | \
1106 JVM_ACC_FINAL | \
1107 JVM_ACC_SYNCHRONIZED | \
1108 JVM_ACC_BRIDGE | \
1109 JVM_ACC_VARARGS | \
1110 JVM_ACC_NATIVE | \
1111 JVM_ACC_ABSTRACT | \
1112 JVM_ACC_STRICT | \
1113 JVM_ACC_SYNTHETIC)
1114
1115 /*
1116 * This is the function defined in libjava.so to perform path
1117 * canonicalization. VM call this function before opening jar files
1118 * to load system classes.
1119 *
1120 */
1121
1122 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1123
1124 /*************************************************************************
1125 PART 3: I/O and Network Support
1126 ************************************************************************/
1127
1128 /*
1129 * Convert a pathname into native format. This function does syntactic
1130 * cleanup, such as removing redundant separator characters. It modifies
1131 * the given pathname string in place.
1132 */
1133 JNIEXPORT char * JNICALL
1134 JVM_NativePath(char *);
1135
1136 /*
1137 * The standard printing functions supported by the Java VM. (Should they
1138 * be renamed to JVM_* in the future?
1139 */
1140
1141 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1142 * respectively, with the following differences:
1143 * - The string written to str is always zero-terminated, also in case of
1144 * truncation (count is too small to hold the result string), unless count
1145 * is 0. In case of truncation count-1 characters are written and '\0'
1146 * appendend.
1147 * - If count is too small to hold the whole string, -1 is returned across
1148 * all platforms. */
1149 JNIEXPORT int
1150 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1151
1152 JNIEXPORT int
1153 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1154
1155 JNIEXPORT int
1156 jio_fprintf(FILE *, const char *fmt, ...);
1157
1158 JNIEXPORT int
1159 jio_vfprintf(FILE *, const char *fmt, va_list args);
1160
1161
1162 JNIEXPORT void * JNICALL
1163 JVM_RawMonitorCreate(void);
1164
1165 JNIEXPORT void JNICALL
1166 JVM_RawMonitorDestroy(void *mon);
1167
1168 JNIEXPORT jint JNICALL
1169 JVM_RawMonitorEnter(void *mon);
1170
1171 JNIEXPORT void JNICALL
1172 JVM_RawMonitorExit(void *mon);
1173
1174 /*
1175 * java.lang.reflect.Method
1176 */
1177 JNIEXPORT jobject JNICALL
1178 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1179
1180 /*
1181 * java.lang.reflect.Constructor
1182 */
1183 JNIEXPORT jobject JNICALL
1184 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1185
1186 /*
1187 * java.lang.management support
1188 */
1189 JNIEXPORT void* JNICALL
1190 JVM_GetManagement(jint version);
1191
1192 /*
1193 * com.sun.tools.attach.VirtualMachine support
1194 *
1195 * Initialize the agent properties with the properties maintained in the VM.
1196 */
1197 JNIEXPORT jobject JNICALL
1198 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1199
1200 JNIEXPORT jstring JNICALL
1201 JVM_GetTemporaryDirectory(JNIEnv *env);
1202
1203 /* Generics reflection support.
1204 *
1205 * Returns information about the given class's EnclosingMethod
1206 * attribute, if present, or null if the class had no enclosing
1207 * method.
1208 *
1209 * If non-null, the returned array contains three elements. Element 0
1210 * is the java.lang.Class of which the enclosing method is a member,
1211 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1212 * method's name and descriptor, respectively.
1213 */
1214 JNIEXPORT jobjectArray JNICALL
1215 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1216
1217 /* =========================================================================
1218 * The following defines a private JVM interface that the JDK can query
1219 * for the JVM version and capabilities. sun.misc.Version defines
1220 * the methods for getting the VM version and its capabilities.
1221 *
1222 * When a new bit is added, the following should be updated to provide
1223 * access to the new capability:
1224 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1225 * SDK: Version class
1226 *
1227 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1228 * JVM to query for the JDK version and capabilities.
1229 *
1230 * When a new bit is added, the following should be updated to provide
1231 * access to the new capability:
1232 * HS: JDK_Version class
1233 * SDK: JDK_GetVersionInfo0
1234 *
1235 * ==========================================================================
1236 */
1237 typedef struct {
1238 unsigned int jvm_version; /* Encoded $VNUM as defined by JEP-223 */
1239 unsigned int patch_version : 8; /* JEP-223 patch version */
1240 unsigned int reserved3 : 8;
1241 unsigned int reserved1 : 16;
1242 unsigned int reserved2;
1243
1244 /* The following bits represents JVM supports that JDK has dependency on.
1245 * JDK can use these bits to determine which JVM version
1246 * and support it has to maintain runtime compatibility.
1247 *
1248 * When a new bit is added in a minor or update release, make sure
1249 * the new bit is also added in the main/baseline.
1250 */
1251 unsigned int is_attachable : 1;
1252 unsigned int : 31;
1253 unsigned int : 32;
1254 unsigned int : 32;
1255 } jvm_version_info;
1256
1257 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1258 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1259 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1260 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1261
1262 JNIEXPORT void JNICALL
1263 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1264
1265 typedef struct {
1266 unsigned int jdk_version; /* Encoded $VNUM as defined by JEP-223 */
1267 unsigned int patch_version : 8; /* JEP-223 patch version */
1268 unsigned int reserved3 : 8;
1269 unsigned int reserved1 : 16;
1270 unsigned int reserved2;
1271
1272 /* The following bits represents new JDK supports that VM has dependency on.
1273 * VM implementation can use these bits to determine which JDK version
1274 * and support it has to maintain runtime compatibility.
1275 *
1276 * When a new bit is added in a minor or update release, make sure
1277 * the new bit is also added in the main/baseline.
1278 */
1279 unsigned int thread_park_blocker : 1;
1280 unsigned int post_vm_init_hook_enabled : 1;
1281 unsigned int pending_list_uses_discovered_field : 1;
1282 unsigned int : 29;
1283 unsigned int : 32;
1284 unsigned int : 32;
1285 } jdk_version_info;
1286
1287 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1288 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1289 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1290 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1291
1292 /*
1293 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1294 * that is dynamically looked up by JVM.
1295 */
1296 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1297
1298 /*
1299 * This structure is used by the launcher to get the default thread
1300 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1301 * version of 1.1. As it is not supported otherwise, it has been removed
1302 * from jni.h
1303 */
1304 typedef struct JDK1_1InitArgs {
1305 jint version;
1306
1307 char **properties;
1308 jint checkSource;
1309 jint nativeStackSize;
1310 jint javaStackSize;
1311 jint minHeapSize;
1312 jint maxHeapSize;
1313 jint verifyMode;
1314 char *classpath;
1315
1316 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1317 void (JNICALL *exit)(jint code);
1318 void (JNICALL *abort)(void);
1319
1320 jint enableClassGC;
1321 jint enableVerboseGC;
1322 jint disableAsyncGC;
1323 jint verbose;
1324 jboolean debugging;
1325 jint debugPort;
1326 } JDK1_1InitArgs;
1327
1328 #ifdef __cplusplus
1329 } /* extern "C" */
1330 #endif /* __cplusplus */
1331
1332 #endif /* !_JAVASOFT_JVM_H_ */
1333
1334 #endif // SHARE_VM_PRIMS_JVM_H