1 /*
2 * Copyright (c) 1997, 2017, 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 /*
193 * java.lang.StackTraceElement
194 */
195 JNIEXPORT void JNICALL
196 JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable);
197
198 JNIEXPORT void JNICALL
199 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
200
201 /*
202 * java.lang.StackWalker
203 */
204 enum {
205 JVM_STACKWALK_FILL_CLASS_REFS_ONLY = 0x02,
206 JVM_STACKWALK_GET_CALLER_CLASS = 0x04,
207 JVM_STACKWALK_SHOW_HIDDEN_FRAMES = 0x20,
208 JVM_STACKWALK_FILL_LIVE_STACK_FRAMES = 0x100
209 };
210
211 JNIEXPORT jobject JNICALL
212 JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
213 jint skip_frames, jint frame_count, jint start_index,
214 jobjectArray frames);
215
216 JNIEXPORT jint JNICALL
217 JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
218 jint frame_count, jint start_index,
219 jobjectArray frames);
220
221 /*
222 * java.lang.Thread
223 */
224 JNIEXPORT void JNICALL
225 JVM_StartThread(JNIEnv *env, jobject thread);
226
227 JNIEXPORT void JNICALL
228 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
229
230 JNIEXPORT jboolean JNICALL
231 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
232
233 JNIEXPORT void JNICALL
234 JVM_SuspendThread(JNIEnv *env, jobject thread);
235
236 JNIEXPORT void JNICALL
237 JVM_ResumeThread(JNIEnv *env, jobject thread);
238
239 JNIEXPORT void JNICALL
240 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
241
242 JNIEXPORT void JNICALL
243 JVM_Yield(JNIEnv *env, jclass threadClass);
244
245 JNIEXPORT void JNICALL
246 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
247
248 JNIEXPORT jobject JNICALL
249 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
250
251 JNIEXPORT jint JNICALL
252 JVM_CountStackFrames(JNIEnv *env, jobject thread);
253
254 JNIEXPORT void JNICALL
255 JVM_Interrupt(JNIEnv *env, jobject thread);
256
257 JNIEXPORT jboolean JNICALL
258 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
259
260 JNIEXPORT jboolean JNICALL
261 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
262
263 JNIEXPORT void JNICALL
264 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
265
266 JNIEXPORT jobjectArray JNICALL
267 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
268
269 JNIEXPORT void JNICALL
270 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
271
272 /* getStackTrace() and getAllStackTraces() method */
273 JNIEXPORT jobjectArray JNICALL
274 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
275
276 /*
277 * java.lang.Continuation
278 */
279 JNIEXPORT void JNICALL
280 JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls);
281
282 /*
283 * java.lang.SecurityManager
284 */
285 JNIEXPORT jclass JNICALL
286 JVM_CurrentLoadedClass(JNIEnv *env);
287
288 JNIEXPORT jobject JNICALL
289 JVM_CurrentClassLoader(JNIEnv *env);
290
291 JNIEXPORT jobjectArray JNICALL
292 JVM_GetClassContext(JNIEnv *env);
293
294 JNIEXPORT jint JNICALL
295 JVM_ClassDepth(JNIEnv *env, jstring name);
296
297 JNIEXPORT jint JNICALL
298 JVM_ClassLoaderDepth(JNIEnv *env);
299
300 /*
301 * java.lang.Package
302 */
303 JNIEXPORT jstring JNICALL
304 JVM_GetSystemPackage(JNIEnv *env, jstring name);
305
306 JNIEXPORT jobjectArray JNICALL
307 JVM_GetSystemPackages(JNIEnv *env);
308
309 /*
310 * java.lang.ref.Reference
311 */
312 JNIEXPORT jobject JNICALL
313 JVM_GetAndClearReferencePendingList(JNIEnv *env);
314
315 JNIEXPORT jboolean JNICALL
316 JVM_HasReferencePendingList(JNIEnv *env);
317
318 JNIEXPORT void JNICALL
319 JVM_WaitForReferencePendingList(JNIEnv *env);
320
321 /*
322 * java.io.ObjectInputStream
323 */
324 JNIEXPORT jobject JNICALL
325 JVM_LatestUserDefinedLoader(JNIEnv *env);
326
327 /*
328 * java.lang.reflect.Array
329 */
330 JNIEXPORT jint JNICALL
331 JVM_GetArrayLength(JNIEnv *env, jobject arr);
332
333 JNIEXPORT jobject JNICALL
334 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
335
336 JNIEXPORT jvalue JNICALL
337 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
338
339 JNIEXPORT void JNICALL
340 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
341
342 JNIEXPORT void JNICALL
343 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
344 unsigned char vCode);
345
346 JNIEXPORT jobject JNICALL
347 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
348
349 JNIEXPORT jobject JNICALL
350 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
351
352 /*
353 * java.lang.Class and java.lang.ClassLoader
354 */
355
356 #define JVM_CALLER_DEPTH -1
357
358 /*
359 * Returns the class in which the code invoking the native method
360 * belongs.
361 *
362 * Note that in JDK 1.1, native methods did not create a frame.
363 * In 1.2, they do. Therefore native methods like Class.forName
364 * can no longer look at the current frame for the caller class.
365 */
366 JNIEXPORT jclass JNICALL
367 JVM_GetCallerClass(JNIEnv *env, int n);
368
369 /*
370 * Find primitive classes
371 * utf: class name
372 */
373 JNIEXPORT jclass JNICALL
374 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
375
376 /*
377 * Find a class from a boot class loader. Returns NULL if class not found.
378 */
379 JNIEXPORT jclass JNICALL
380 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
381
382 /*
383 * Find a class from a given class loader. Throws ClassNotFoundException.
384 * name: name of class
385 * init: whether initialization is done
386 * loader: class loader to look up the class. This may not be the same as the caller's
387 * class loader.
388 * caller: initiating class. The initiating class may be null when a security
389 * manager is not installed.
390 */
391 JNIEXPORT jclass JNICALL
392 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
393 jobject loader, jclass caller);
394
395 /*
396 * Find a class from a given class.
397 */
398 JNIEXPORT jclass JNICALL
399 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
400 jclass from);
401
402 /* Find a loaded class cached by the VM */
403 JNIEXPORT jclass JNICALL
404 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
405
406 /* Define a class */
407 JNIEXPORT jclass JNICALL
408 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
409 jsize len, jobject pd);
410
411 /* Define a class with a source (added in JDK1.5) */
412 JNIEXPORT jclass JNICALL
413 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
414 const jbyte *buf, jsize len, jobject pd,
415 const char *source);
416
417 /*
418 * Module support funcions
419 */
420
421 /*
422 * Define a module with the specified packages and bind the module to the
423 * given class loader.
424 * module: module to define
425 * is_open: specifies if module is open (currently ignored)
426 * version: the module version
427 * location: the module location
428 * packages: list of packages in the module
429 * num_packages: number of packages in the module
430 */
431 JNIEXPORT void JNICALL
432 JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
433 jstring location, const char* const* packages, jsize num_packages);
434
435 /*
436 * Set the boot loader's unnamed module.
437 * module: boot loader's unnamed module
438 */
439 JNIEXPORT void JNICALL
440 JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module);
441
442 /*
443 * Do a qualified export of a package.
444 * from_module: module containing the package to export
445 * package: name of the package to export
446 * to_module: module to export the package to
447 */
448 JNIEXPORT void JNICALL
449 JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module);
450
451 /*
452 * Do an export of a package to all unnamed modules.
453 * from_module: module containing the package to export
454 * package: name of the package to export to all unnamed modules
455 */
456 JNIEXPORT void JNICALL
457 JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package);
458
459 /*
460 * Do an unqualified export of a package.
461 * from_module: module containing the package to export
462 * package: name of the package to export
463 */
464 JNIEXPORT void JNICALL
465 JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package);
466
467 /*
468 * Add a module to the list of modules that a given module can read.
469 * from_module: module requesting read access
470 * source_module: module that from_module wants to read
471 */
472 JNIEXPORT void JNICALL
473 JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module);
474
475 /*
476 * Reflection support functions
477 */
478
479 JNIEXPORT jstring JNICALL
480 JVM_GetClassName(JNIEnv *env, jclass cls);
481
482 JNIEXPORT jobjectArray JNICALL
483 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
484
485 JNIEXPORT jboolean JNICALL
486 JVM_IsInterface(JNIEnv *env, jclass cls);
487
488 JNIEXPORT jobjectArray JNICALL
489 JVM_GetClassSigners(JNIEnv *env, jclass cls);
490
491 JNIEXPORT void JNICALL
492 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
493
494 JNIEXPORT jobject JNICALL
495 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
496
497 JNIEXPORT jboolean JNICALL
498 JVM_IsArrayClass(JNIEnv *env, jclass cls);
499
500 JNIEXPORT jboolean JNICALL
501 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
502
503 JNIEXPORT jint JNICALL
504 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
505
506 JNIEXPORT jobjectArray JNICALL
507 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
508
509 JNIEXPORT jclass JNICALL
510 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
511
512 JNIEXPORT jstring JNICALL
513 JVM_GetSimpleBinaryName(JNIEnv *env, jclass ofClass);
514
515 /* Generics support (JDK 1.5) */
516 JNIEXPORT jstring JNICALL
517 JVM_GetClassSignature(JNIEnv *env, jclass cls);
518
519 /* Annotations support (JDK 1.5) */
520 JNIEXPORT jbyteArray JNICALL
521 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
522
523 /* Annotations support (JDK 1.6) */
524
525 /* Type use annotations support (JDK 1.8) */
526
527 JNIEXPORT jbyteArray JNICALL
528 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
529
530 // field is a handle to a java.lang.reflect.Field object
531 JNIEXPORT jbyteArray JNICALL
532 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
533
534 // method is a handle to a java.lang.reflect.Method object
535 JNIEXPORT jbyteArray JNICALL
536 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
537
538 /*
539 * New (JDK 1.4) reflection implementation
540 */
541
542 JNIEXPORT jobjectArray JNICALL
543 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
544
545 JNIEXPORT jobjectArray JNICALL
546 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
547
548 JNIEXPORT jobjectArray JNICALL
549 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
550
551 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
552 This returns the access flags for the class as specified in the
553 class file rather than searching the InnerClasses attribute (if
554 present) to find the source-level access flags. Only the values of
555 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
556 valid. */
557 JNIEXPORT jint JNICALL
558 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
559
560 /*
561 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
562 */
563
564 JNIEXPORT jobject JNICALL
565 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
566
567 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
568 (JNIEnv *env, jobject obj, jobject unused);
569
570 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
571 (JNIEnv *env, jobject obj, jobject unused, jint index);
572
573 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
574 (JNIEnv *env, jobject obj, jobject unused, jint index);
575
576 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
577 (JNIEnv *env, jobject obj, jobject unused, jint index);
578
579 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
580 (JNIEnv *env, jobject obj, jobject unused, jint index);
581
582 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
583 (JNIEnv *env, jobject obj, jobject unused, jint index);
584
585 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
586 (JNIEnv *env, jobject obj, jobject unused, jint index);
587
588 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
589 (JNIEnv *env, jobject obj, jobject unused, jint index);
590
591 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetNameAndTypeRefInfoAt
592 (JNIEnv *env, jobject obj, jobject unused, jint index);
593
594 JNIEXPORT jint JNICALL JVM_ConstantPoolGetNameAndTypeRefIndexAt
595 (JNIEnv *env, jobject obj, jobject unused, jint index);
596
597 JNIEXPORT jint JNICALL JVM_ConstantPoolGetClassRefIndexAt
598 (JNIEnv *env, jobject obj, jobject unused, jint index);
599
600 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
601 (JNIEnv *env, jobject obj, jobject unused, jint index);
602
603 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
604 (JNIEnv *env, jobject obj, jobject unused, jint index);
605
606 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
607 (JNIEnv *env, jobject obj, jobject unused, jint index);
608
609 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
610 (JNIEnv *env, jobject obj, jobject unused, jint index);
611
612 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
613 (JNIEnv *env, jobject obj, jobject unused, jint index);
614
615 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
616 (JNIEnv *env, jobject obj, jobject unused, jint index);
617
618 JNIEXPORT jbyte JNICALL JVM_ConstantPoolGetTagAt
619 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
620
621 /*
622 * java.security.*
623 */
624
625 JNIEXPORT jobject JNICALL
626 JVM_DoPrivileged(JNIEnv *env, jclass cls,
627 jobject action, jobject context, jboolean wrapException);
628
629 JNIEXPORT jobject JNICALL
630 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
631
632 JNIEXPORT jobject JNICALL
633 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
634
635 /*
636 * Signal support, used to implement the shutdown sequence. Every VM must
637 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
638 * (^C) and the latter for external termination (kill, system shutdown, etc.).
639 * Other platform-dependent signal values may also be supported.
640 */
641
642 JNIEXPORT void * JNICALL
643 JVM_RegisterSignal(jint sig, void *handler);
644
645 JNIEXPORT jboolean JNICALL
646 JVM_RaiseSignal(jint sig);
647
648 JNIEXPORT jint JNICALL
649 JVM_FindSignal(const char *name);
650
651 /*
652 * Retrieve the assertion directives for the specified class.
653 */
654 JNIEXPORT jboolean JNICALL
655 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
656
657 /*
658 * Retrieve the assertion directives from the VM.
659 */
660 JNIEXPORT jobject JNICALL
661 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
662
663 /*
664 * java.util.concurrent.atomic.AtomicLong
665 */
666 JNIEXPORT jboolean JNICALL
667 JVM_SupportsCX8(void);
668
669 /*************************************************************************
670 PART 2: Support for the Verifier and Class File Format Checker
671 ************************************************************************/
672 /*
673 * Return the class name in UTF format. The result is valid
674 * until JVM_ReleaseUTf is called.
675 *
676 * The caller must treat the string as a constant and not modify it
677 * in any way.
678 */
679 JNIEXPORT const char * JNICALL
680 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
681
682 /*
683 * Returns the constant pool types in the buffer provided by "types."
684 */
685 JNIEXPORT void JNICALL
686 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
687
688 /*
689 * Returns the number of Constant Pool entries.
690 */
691 JNIEXPORT jint JNICALL
692 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
693
694 /*
695 * Returns the number of *declared* fields or methods.
696 */
697 JNIEXPORT jint JNICALL
698 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
699
700 JNIEXPORT jint JNICALL
701 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
702
703 /*
704 * Returns the CP indexes of exceptions raised by a given method.
705 * Places the result in the given buffer.
706 *
707 * The method is identified by method_index.
708 */
709 JNIEXPORT void JNICALL
710 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
711 unsigned short *exceptions);
712 /*
713 * Returns the number of exceptions raised by a given method.
714 * The method is identified by method_index.
715 */
716 JNIEXPORT jint JNICALL
717 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
718
719 /*
720 * Returns the byte code sequence of a given method.
721 * Places the result in the given buffer.
722 *
723 * The method is identified by method_index.
724 */
725 JNIEXPORT void JNICALL
726 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
727 unsigned char *code);
728
729 /*
730 * Returns the length of the byte code sequence of a given method.
731 * The method is identified by method_index.
732 */
733 JNIEXPORT jint JNICALL
734 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
735
736 /*
737 * A structure used to a capture exception table entry in a Java method.
738 */
739 typedef struct {
740 jint start_pc;
741 jint end_pc;
742 jint handler_pc;
743 jint catchType;
744 } JVM_ExceptionTableEntryType;
745
746 /*
747 * Returns the exception table entry at entry_index of a given method.
748 * Places the result in the given buffer.
749 *
750 * The method is identified by method_index.
751 */
752 JNIEXPORT void JNICALL
753 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
754 jint entry_index,
755 JVM_ExceptionTableEntryType *entry);
756
757 /*
758 * Returns the length of the exception table of a given method.
759 * The method is identified by method_index.
760 */
761 JNIEXPORT jint JNICALL
762 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
763
764 /*
765 * Returns the modifiers of a given field.
766 * The field is identified by field_index.
767 */
768 JNIEXPORT jint JNICALL
769 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
770
771 /*
772 * Returns the modifiers of a given method.
773 * The method is identified by method_index.
774 */
775 JNIEXPORT jint JNICALL
776 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
777
778 /*
779 * Returns the number of local variables of a given method.
780 * The method is identified by method_index.
781 */
782 JNIEXPORT jint JNICALL
783 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
784
785 /*
786 * Returns the number of arguments (including this pointer) of a given method.
787 * The method is identified by method_index.
788 */
789 JNIEXPORT jint JNICALL
790 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
791
792 /*
793 * Returns the maximum amount of stack (in words) used by a given method.
794 * The method is identified by method_index.
795 */
796 JNIEXPORT jint JNICALL
797 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
798
799 /*
800 * Is a given method a constructor.
801 * The method is identified by method_index.
802 */
803 JNIEXPORT jboolean JNICALL
804 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
805
806 /*
807 * Is the given method generated by the VM.
808 * The method is identified by method_index.
809 */
810 JNIEXPORT jboolean JNICALL
811 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
812
813 /*
814 * Returns the name of a given method in UTF format.
815 * The result remains valid until JVM_ReleaseUTF is called.
816 *
817 * The caller must treat the string as a constant and not modify it
818 * in any way.
819 */
820 JNIEXPORT const char * JNICALL
821 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
822
823 /*
824 * Returns the signature of a given method in UTF format.
825 * The result remains valid until JVM_ReleaseUTF is called.
826 *
827 * The caller must treat the string as a constant and not modify it
828 * in any way.
829 */
830 JNIEXPORT const char * JNICALL
831 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
832
833 /*
834 * Returns the name of the field refered to at a given constant pool
835 * index.
836 *
837 * The result is in UTF format and remains valid until JVM_ReleaseUTF
838 * is called.
839 *
840 * The caller must treat the string as a constant and not modify it
841 * in any way.
842 */
843 JNIEXPORT const char * JNICALL
844 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
845
846 /*
847 * Returns the name of the method refered to at a given constant pool
848 * index.
849 *
850 * The result is in UTF format and remains valid until JVM_ReleaseUTF
851 * is called.
852 *
853 * The caller must treat the string as a constant and not modify it
854 * in any way.
855 */
856 JNIEXPORT const char * JNICALL
857 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
858
859 /*
860 * Returns the signature of the method refered to at a given constant pool
861 * index.
862 *
863 * The result is in UTF format and remains valid until JVM_ReleaseUTF
864 * is called.
865 *
866 * The caller must treat the string as a constant and not modify it
867 * in any way.
868 */
869 JNIEXPORT const char * JNICALL
870 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
871
872 /*
873 * Returns the signature of the field refered to at a given constant pool
874 * index.
875 *
876 * The result is in UTF format and remains valid until JVM_ReleaseUTF
877 * is called.
878 *
879 * The caller must treat the string as a constant and not modify it
880 * in any way.
881 */
882 JNIEXPORT const char * JNICALL
883 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
884
885 /*
886 * Returns the class name refered to at a given constant pool index.
887 *
888 * The result is in UTF format and remains valid until JVM_ReleaseUTF
889 * is called.
890 *
891 * The caller must treat the string as a constant and not modify it
892 * in any way.
893 */
894 JNIEXPORT const char * JNICALL
895 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
896
897 /*
898 * Returns the class name refered to at a given constant pool index.
899 *
900 * The constant pool entry must refer to a CONSTANT_Fieldref.
901 *
902 * The result is in UTF format and remains valid until JVM_ReleaseUTF
903 * is called.
904 *
905 * The caller must treat the string as a constant and not modify it
906 * in any way.
907 */
908 JNIEXPORT const char * JNICALL
909 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
910
911 /*
912 * Returns the class name refered to at a given constant pool index.
913 *
914 * The constant pool entry must refer to CONSTANT_Methodref or
915 * CONSTANT_InterfaceMethodref.
916 *
917 * The result is in UTF format and remains valid until JVM_ReleaseUTF
918 * is called.
919 *
920 * The caller must treat the string as a constant and not modify it
921 * in any way.
922 */
923 JNIEXPORT const char * JNICALL
924 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
925
926 /*
927 * Returns the modifiers of a field in calledClass. The field is
928 * referred to in class cb at constant pool entry index.
929 *
930 * The caller must treat the string as a constant and not modify it
931 * in any way.
932 *
933 * Returns -1 if the field does not exist in calledClass.
934 */
935 JNIEXPORT jint JNICALL
936 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
937
938 /*
939 * Returns the modifiers of a method in calledClass. The method is
940 * referred to in class cb at constant pool entry index.
941 *
942 * Returns -1 if the method does not exist in calledClass.
943 */
944 JNIEXPORT jint JNICALL
945 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
946
947 /*
948 * Releases the UTF string obtained from the VM.
949 */
950 JNIEXPORT void JNICALL
951 JVM_ReleaseUTF(const char *utf);
952
953 /*
954 * Compare if two classes are in the same package.
955 */
956 JNIEXPORT jboolean JNICALL
957 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
958
959 /* Constants in class files */
960
961 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */
962 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */
963 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */
964 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */
965 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */
966 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */
967 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */
968 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */
969 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */
970 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */
971 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */
972 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */
973 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */
974 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */
975 #define JVM_ACC_STRICT 0x0800 /* strict floating point */
976 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */
977 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */
978 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */
979 #define JVM_ACC_MODULE 0x8000 /* module-info class file */
980
981 #define JVM_ACC_PUBLIC_BIT 0
982 #define JVM_ACC_PRIVATE_BIT 1
983 #define JVM_ACC_PROTECTED_BIT 2
984 #define JVM_ACC_STATIC_BIT 3
985 #define JVM_ACC_FINAL_BIT 4
986 #define JVM_ACC_SYNCHRONIZED_BIT 5
987 #define JVM_ACC_SUPER_BIT 5
988 #define JVM_ACC_VOLATILE_BIT 6
989 #define JVM_ACC_BRIDGE_BIT 6
990 #define JVM_ACC_TRANSIENT_BIT 7
991 #define JVM_ACC_VARARGS_BIT 7
992 #define JVM_ACC_NATIVE_BIT 8
993 #define JVM_ACC_INTERFACE_BIT 9
994 #define JVM_ACC_ABSTRACT_BIT 10
995 #define JVM_ACC_STRICT_BIT 11
996 #define JVM_ACC_SYNTHETIC_BIT 12
997 #define JVM_ACC_ANNOTATION_BIT 13
998 #define JVM_ACC_ENUM_BIT 14
999
1000 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
1001 enum {
1002 JVM_CONSTANT_Utf8 = 1,
1003 JVM_CONSTANT_Unicode, /* unused */
1004 JVM_CONSTANT_Integer,
1005 JVM_CONSTANT_Float,
1006 JVM_CONSTANT_Long,
1007 JVM_CONSTANT_Double,
1008 JVM_CONSTANT_Class,
1009 JVM_CONSTANT_String,
1010 JVM_CONSTANT_Fieldref,
1011 JVM_CONSTANT_Methodref,
1012 JVM_CONSTANT_InterfaceMethodref,
1013 JVM_CONSTANT_NameAndType,
1014 JVM_CONSTANT_MethodHandle = 15, // JSR 292
1015 JVM_CONSTANT_MethodType = 16, // JSR 292
1016 //JVM_CONSTANT_(unused) = 17, // JSR 292 early drafts only
1017 JVM_CONSTANT_InvokeDynamic = 18, // JSR 292
1018 JVM_CONSTANT_ExternalMax = 18 // Last tag found in classfiles
1019 };
1020
1021 /* JVM_CONSTANT_MethodHandle subtypes */
1022 enum {
1023 JVM_REF_getField = 1,
1024 JVM_REF_getStatic = 2,
1025 JVM_REF_putField = 3,
1026 JVM_REF_putStatic = 4,
1027 JVM_REF_invokeVirtual = 5,
1028 JVM_REF_invokeStatic = 6,
1029 JVM_REF_invokeSpecial = 7,
1030 JVM_REF_newInvokeSpecial = 8,
1031 JVM_REF_invokeInterface = 9
1032 };
1033
1034 /* Used in the newarray instruction. */
1035
1036 #define JVM_T_BOOLEAN 4
1037 #define JVM_T_CHAR 5
1038 #define JVM_T_FLOAT 6
1039 #define JVM_T_DOUBLE 7
1040 #define JVM_T_BYTE 8
1041 #define JVM_T_SHORT 9
1042 #define JVM_T_INT 10
1043 #define JVM_T_LONG 11
1044
1045 /* JVM method signatures */
1046
1047 #define JVM_SIGNATURE_ARRAY '['
1048 #define JVM_SIGNATURE_BYTE 'B'
1049 #define JVM_SIGNATURE_CHAR 'C'
1050 #define JVM_SIGNATURE_CLASS 'L'
1051 #define JVM_SIGNATURE_ENDCLASS ';'
1052 #define JVM_SIGNATURE_ENUM 'E'
1053 #define JVM_SIGNATURE_FLOAT 'F'
1054 #define JVM_SIGNATURE_DOUBLE 'D'
1055 #define JVM_SIGNATURE_FUNC '('
1056 #define JVM_SIGNATURE_ENDFUNC ')'
1057 #define JVM_SIGNATURE_INT 'I'
1058 #define JVM_SIGNATURE_LONG 'J'
1059 #define JVM_SIGNATURE_SHORT 'S'
1060 #define JVM_SIGNATURE_VOID 'V'
1061 #define JVM_SIGNATURE_BOOLEAN 'Z'
1062
1063 /*
1064 * A function defined by the byte-code verifier and called by the VM.
1065 * This is not a function implemented in the VM.
1066 *
1067 * Returns JNI_FALSE if verification fails. A detailed error message
1068 * will be places in msg_buf, whose length is specified by buf_len.
1069 */
1070 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1071 jclass cb,
1072 char * msg_buf,
1073 jint buf_len);
1074
1075
1076 /*
1077 * Support for a VM-independent class format checker.
1078 */
1079 typedef struct {
1080 unsigned long code; /* byte code */
1081 unsigned long excs; /* exceptions */
1082 unsigned long etab; /* catch table */
1083 unsigned long lnum; /* line number */
1084 unsigned long lvar; /* local vars */
1085 } method_size_info;
1086
1087 typedef struct {
1088 unsigned int constants; /* constant pool */
1089 unsigned int fields;
1090 unsigned int methods;
1091 unsigned int interfaces;
1092 unsigned int fields2; /* number of static 2-word fields */
1093 unsigned int innerclasses; /* # of records in InnerClasses attr */
1094
1095 method_size_info clinit; /* memory used in clinit */
1096 method_size_info main; /* used everywhere else */
1097 } class_size_info;
1098
1099 /*
1100 * Functions defined in libjava.so to perform string conversions.
1101 *
1102 */
1103
1104 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1105
1106 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1107
1108 /* This is the function defined in libjava.so that performs class
1109 * format checks. This functions fills in size information about
1110 * the class file and returns:
1111 *
1112 * 0: good
1113 * -1: out of memory
1114 * -2: bad format
1115 * -3: unsupported version
1116 * -4: bad class name
1117 */
1118
1119 typedef jint (*check_format_fn_t)(char *class_name,
1120 unsigned char *data,
1121 unsigned int data_size,
1122 class_size_info *class_size,
1123 char *message_buffer,
1124 jint buffer_length,
1125 jboolean measure_only,
1126 jboolean check_relaxed);
1127
1128 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1129 JVM_ACC_FINAL | \
1130 JVM_ACC_SUPER | \
1131 JVM_ACC_INTERFACE | \
1132 JVM_ACC_ABSTRACT | \
1133 JVM_ACC_ANNOTATION | \
1134 JVM_ACC_ENUM | \
1135 JVM_ACC_SYNTHETIC)
1136
1137 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1138 JVM_ACC_PRIVATE | \
1139 JVM_ACC_PROTECTED | \
1140 JVM_ACC_STATIC | \
1141 JVM_ACC_FINAL | \
1142 JVM_ACC_VOLATILE | \
1143 JVM_ACC_TRANSIENT | \
1144 JVM_ACC_ENUM | \
1145 JVM_ACC_SYNTHETIC)
1146
1147 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1148 JVM_ACC_PRIVATE | \
1149 JVM_ACC_PROTECTED | \
1150 JVM_ACC_STATIC | \
1151 JVM_ACC_FINAL | \
1152 JVM_ACC_SYNCHRONIZED | \
1153 JVM_ACC_BRIDGE | \
1154 JVM_ACC_VARARGS | \
1155 JVM_ACC_NATIVE | \
1156 JVM_ACC_ABSTRACT | \
1157 JVM_ACC_STRICT | \
1158 JVM_ACC_SYNTHETIC)
1159
1160 /*
1161 * This is the function defined in libjava.so to perform path
1162 * canonicalization. VM call this function before opening jar files
1163 * to load system classes.
1164 *
1165 */
1166
1167 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1168
1169 /*************************************************************************
1170 PART 3: I/O and Network Support
1171 ************************************************************************/
1172
1173 /*
1174 * Convert a pathname into native format. This function does syntactic
1175 * cleanup, such as removing redundant separator characters. It modifies
1176 * the given pathname string in place.
1177 */
1178 JNIEXPORT char * JNICALL
1179 JVM_NativePath(char *);
1180
1181 /*
1182 * The standard printing functions supported by the Java VM. (Should they
1183 * be renamed to JVM_* in the future?
1184 */
1185
1186 /* jio_snprintf() and jio_vsnprintf() behave like snprintf(3) and vsnprintf(3),
1187 * respectively, with the following differences:
1188 * - The string written to str is always zero-terminated, also in case of
1189 * truncation (count is too small to hold the result string), unless count
1190 * is 0. In case of truncation count-1 characters are written and '\0'
1191 * appendend.
1192 * - If count is too small to hold the whole string, -1 is returned across
1193 * all platforms. */
1194 JNIEXPORT int
1195 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1196
1197 JNIEXPORT int
1198 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1199
1200 JNIEXPORT int
1201 jio_fprintf(FILE *, const char *fmt, ...);
1202
1203 JNIEXPORT int
1204 jio_vfprintf(FILE *, const char *fmt, va_list args);
1205
1206
1207 JNIEXPORT void * JNICALL
1208 JVM_RawMonitorCreate(void);
1209
1210 JNIEXPORT void JNICALL
1211 JVM_RawMonitorDestroy(void *mon);
1212
1213 JNIEXPORT jint JNICALL
1214 JVM_RawMonitorEnter(void *mon);
1215
1216 JNIEXPORT void JNICALL
1217 JVM_RawMonitorExit(void *mon);
1218
1219 /*
1220 * java.lang.reflect.Method
1221 */
1222 JNIEXPORT jobject JNICALL
1223 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1224
1225 /*
1226 * java.lang.reflect.Constructor
1227 */
1228 JNIEXPORT jobject JNICALL
1229 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1230
1231 /*
1232 * java.lang.management support
1233 */
1234 JNIEXPORT void* JNICALL
1235 JVM_GetManagement(jint version);
1236
1237 /*
1238 * com.sun.tools.attach.VirtualMachine support
1239 *
1240 * Initialize the agent properties with the properties maintained in the VM.
1241 */
1242 JNIEXPORT jobject JNICALL
1243 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1244
1245 JNIEXPORT jstring JNICALL
1246 JVM_GetTemporaryDirectory(JNIEnv *env);
1247
1248 /* Generics reflection support.
1249 *
1250 * Returns information about the given class's EnclosingMethod
1251 * attribute, if present, or null if the class had no enclosing
1252 * method.
1253 *
1254 * If non-null, the returned array contains three elements. Element 0
1255 * is the java.lang.Class of which the enclosing method is a member,
1256 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1257 * method's name and descriptor, respectively.
1258 */
1259 JNIEXPORT jobjectArray JNICALL
1260 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1261
1262 /* =========================================================================
1263 * The following defines a private JVM interface that the JDK can query
1264 * for the JVM version and capabilities. sun.misc.Version defines
1265 * the methods for getting the VM version and its capabilities.
1266 *
1267 * When a new bit is added, the following should be updated to provide
1268 * access to the new capability:
1269 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1270 * SDK: Version class
1271 *
1272 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1273 * JVM to query for the JDK version and capabilities.
1274 *
1275 * When a new bit is added, the following should be updated to provide
1276 * access to the new capability:
1277 * HS: JDK_Version class
1278 * SDK: JDK_GetVersionInfo0
1279 *
1280 * ==========================================================================
1281 */
1282 typedef struct {
1283 unsigned int jvm_version; /* Encoded $VNUM as defined by JEP-223 */
1284 unsigned int patch_version : 8; /* JEP-223 patch version */
1285 unsigned int reserved3 : 8;
1286 unsigned int reserved1 : 16;
1287 unsigned int reserved2;
1288
1289 /* The following bits represents JVM supports that JDK has dependency on.
1290 * JDK can use these bits to determine which JVM version
1291 * and support it has to maintain runtime compatibility.
1292 *
1293 * When a new bit is added in a minor or update release, make sure
1294 * the new bit is also added in the main/baseline.
1295 */
1296 unsigned int is_attachable : 1;
1297 unsigned int : 31;
1298 unsigned int : 32;
1299 unsigned int : 32;
1300 } jvm_version_info;
1301
1302 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1303 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1304 #define JVM_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1305 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1306
1307 JNIEXPORT void JNICALL
1308 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1309
1310 typedef struct {
1311 unsigned int jdk_version; /* Encoded $VNUM as defined by JEP-223 */
1312 unsigned int patch_version : 8; /* JEP-223 patch version */
1313 unsigned int reserved3 : 8;
1314 unsigned int reserved1 : 16;
1315 unsigned int reserved2;
1316
1317 /* The following bits represents new JDK supports that VM has dependency on.
1318 * VM implementation can use these bits to determine which JDK version
1319 * and support it has to maintain runtime compatibility.
1320 *
1321 * When a new bit is added in a minor or update release, make sure
1322 * the new bit is also added in the main/baseline.
1323 */
1324 unsigned int thread_park_blocker : 1;
1325 unsigned int post_vm_init_hook_enabled : 1;
1326 unsigned int pending_list_uses_discovered_field : 1;
1327 unsigned int : 29;
1328 unsigned int : 32;
1329 unsigned int : 32;
1330 } jdk_version_info;
1331
1332 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1333 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1334 #define JDK_VERSION_SECURITY(version) ((version & 0x0000FF00) >> 8)
1335 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1336
1337 /*
1338 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1339 * that is dynamically looked up by JVM.
1340 */
1341 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1342
1343 /*
1344 * This structure is used by the launcher to get the default thread
1345 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1346 * version of 1.1. As it is not supported otherwise, it has been removed
1347 * from jni.h
1348 */
1349 typedef struct JDK1_1InitArgs {
1350 jint version;
1351
1352 char **properties;
1353 jint checkSource;
1354 jint nativeStackSize;
1355 jint javaStackSize;
1356 jint minHeapSize;
1357 jint maxHeapSize;
1358 jint verifyMode;
1359 char *classpath;
1360
1361 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1362 void (JNICALL *exit)(jint code);
1363 void (JNICALL *abort)(void);
1364
1365 jint enableClassGC;
1366 jint enableVerboseGC;
1367 jint disableAsyncGC;
1368 jint verbose;
1369 jboolean debugging;
1370 jint debugPort;
1371 } JDK1_1InitArgs;
1372
1373 #ifdef __cplusplus
1374 } /* extern "C" */
1375 #endif /* __cplusplus */
1376
1377 #endif /* !_JAVASOFT_JVM_H_ */
1378
1379 #endif // SHARE_VM_PRIMS_JVM_H