1 /*
2 * Copyright (c) 1997, 2010, 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 "runtime/reflectionCompat.hpp"
30 #include "utilities/globalDefinitions.hpp"
31 #ifdef TARGET_OS_FAMILY_linux
32 # include "jvm_linux.h"
33 #endif
34 #ifdef TARGET_OS_FAMILY_solaris
35 # include "jvm_solaris.h"
36 #endif
37 #ifdef TARGET_OS_FAMILY_windows
38 # include "jvm_windows.h"
39 #endif
40
41 #ifndef _JAVASOFT_JVM_H_
42 #define _JAVASOFT_JVM_H_
43
44 // HotSpot integration note:
45 //
46 // This file and jvm.h used with the JDK are identical,
47 // except for the three includes removed below and the
48 // SUPPORT_OLD_REFLECTION sections cut out of the JDK's jvm.h.
49
50 // #include <sys/stat.h>
51 // #include "jni.h"
52 // #include "jvm_md.h"
53
54
55 #ifdef __cplusplus
56 extern "C" {
57 #endif
58
59 /*
60 * This file contains additional functions exported from the VM.
61 * These functions are complementary to the standard JNI support.
62 * There are three parts to this file:
63 *
64 * First, this file contains the VM-related functions needed by native
65 * libraries in the standard Java API. For example, the java.lang.Object
66 * class needs VM-level functions that wait for and notify monitors.
67 *
68 * Second, this file contains the functions and constant definitions
69 * needed by the byte code verifier and class file format checker.
70 * These functions allow the verifier and format checker to be written
71 * in a VM-independent way.
72 *
73 * Third, this file contains various I/O and nerwork operations needed
74 * by the standard Java I/O and network APIs.
75 */
76
77 /*
78 * Bump the version number when either of the following happens:
79 *
80 * 1. There is a change in JVM_* functions.
81 *
82 * 2. There is a change in the contract between VM and Java classes.
83 * For example, if the VM relies on a new private field in Thread
84 * class.
85 */
86
87 #define JVM_INTERFACE_VERSION 4
88
89
90 JNIEXPORT jint JNICALL
91 JVM_GetInterfaceVersion(void);
92
93 /*************************************************************************
94 PART 1: Functions for Native Libraries
95 ************************************************************************/
96 /*
97 * java.lang.Object
98 */
99 JNIEXPORT jint JNICALL
100 JVM_IHashCode(JNIEnv *env, jobject obj);
101
102 JNIEXPORT void JNICALL
103 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
104
105 JNIEXPORT void JNICALL
106 JVM_MonitorNotify(JNIEnv *env, jobject obj);
107
108 JNIEXPORT void JNICALL
109 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
110
111 JNIEXPORT jobject JNICALL
112 JVM_Clone(JNIEnv *env, jobject obj);
113
114 /*
115 * java.lang.String
116 */
117 JNIEXPORT jstring JNICALL
118 JVM_InternString(JNIEnv *env, jstring str);
119
120 /*
121 * java.lang.System
122 */
123 JNIEXPORT jlong JNICALL
124 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
125
126 JNIEXPORT jlong JNICALL
127 JVM_NanoTime(JNIEnv *env, jclass ignored);
128
129 JNIEXPORT void JNICALL
130 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
131 jobject dst, jint dst_pos, jint length);
132
133 JNIEXPORT jobject JNICALL
134 JVM_InitProperties(JNIEnv *env, jobject p);
135
136 /*
137 * java.io.File
138 */
139 JNIEXPORT void JNICALL
140 JVM_OnExit(void (*func)(void));
141
142 /*
143 * java.lang.Runtime
144 */
145 JNIEXPORT void JNICALL
146 JVM_Exit(jint code);
147
148 JNIEXPORT void JNICALL
149 JVM_Halt(jint code);
150
151 JNIEXPORT void JNICALL
152 JVM_GC(void);
153
154 /* Returns the number of real-time milliseconds that have elapsed since the
155 * least-recently-inspected heap object was last inspected by the garbage
156 * collector.
157 *
158 * For simple stop-the-world collectors this value is just the time
159 * since the most recent collection. For generational collectors it is the
160 * time since the oldest generation was most recently collected. Other
161 * collectors are free to return a pessimistic estimate of the elapsed time, or
162 * simply the time since the last full collection was performed.
163 *
164 * Note that in the presence of reference objects, a given object that is no
165 * longer strongly reachable may have to be inspected multiple times before it
166 * can be reclaimed.
167 */
168 JNIEXPORT jlong JNICALL
169 JVM_MaxObjectInspectionAge(void);
170
171 JNIEXPORT void JNICALL
172 JVM_TraceInstructions(jboolean on);
173
174 JNIEXPORT void JNICALL
175 JVM_TraceMethodCalls(jboolean on);
176
177 JNIEXPORT jlong JNICALL
178 JVM_TotalMemory(void);
179
180 JNIEXPORT jlong JNICALL
181 JVM_FreeMemory(void);
182
183 JNIEXPORT jlong JNICALL
184 JVM_MaxMemory(void);
185
186 JNIEXPORT jint JNICALL
187 JVM_ActiveProcessorCount(void);
188
189 JNIEXPORT void * JNICALL
190 JVM_LoadLibrary(const char *name);
191
192 JNIEXPORT void JNICALL
193 JVM_UnloadLibrary(void * handle);
194
195 JNIEXPORT void * JNICALL
196 JVM_FindLibraryEntry(void *handle, const char *name);
197
198 JNIEXPORT jboolean JNICALL
199 JVM_IsSupportedJNIVersion(jint version);
200
201 /*
202 * java.lang.Float and java.lang.Double
203 */
204 JNIEXPORT jboolean JNICALL
205 JVM_IsNaN(jdouble d);
206
207 /*
208 * java.lang.Throwable
209 */
210 JNIEXPORT void JNICALL
211 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
212
213 JNIEXPORT void JNICALL
214 JVM_PrintStackTrace(JNIEnv *env, jobject throwable, jobject printable);
215
216 JNIEXPORT jint JNICALL
217 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
218
219 JNIEXPORT jobject JNICALL
220 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
221
222 /*
223 * java.lang.Compiler
224 */
225 JNIEXPORT void JNICALL
226 JVM_InitializeCompiler (JNIEnv *env, jclass compCls);
227
228 JNIEXPORT jboolean JNICALL
229 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls);
230
231 JNIEXPORT jboolean JNICALL
232 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls);
233
234 JNIEXPORT jboolean JNICALL
235 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname);
236
237 JNIEXPORT jobject JNICALL
238 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg);
239
240 JNIEXPORT void JNICALL
241 JVM_EnableCompiler(JNIEnv *env, jclass compCls);
242
243 JNIEXPORT void JNICALL
244 JVM_DisableCompiler(JNIEnv *env, jclass compCls);
245
246 /*
247 * java.lang.Thread
248 */
249 JNIEXPORT void JNICALL
250 JVM_StartThread(JNIEnv *env, jobject thread);
251
252 JNIEXPORT void JNICALL
253 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
254
255 JNIEXPORT jboolean JNICALL
256 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
257
258 JNIEXPORT void JNICALL
259 JVM_SuspendThread(JNIEnv *env, jobject thread);
260
261 JNIEXPORT void JNICALL
262 JVM_ResumeThread(JNIEnv *env, jobject thread);
263
264 JNIEXPORT void JNICALL
265 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
266
267 JNIEXPORT void JNICALL
268 JVM_Yield(JNIEnv *env, jclass threadClass);
269
270 JNIEXPORT void JNICALL
271 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
272
273 JNIEXPORT jobject JNICALL
274 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
275
276 JNIEXPORT jint JNICALL
277 JVM_CountStackFrames(JNIEnv *env, jobject thread);
278
279 JNIEXPORT void JNICALL
280 JVM_Interrupt(JNIEnv *env, jobject thread);
281
282 JNIEXPORT jboolean JNICALL
283 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
284
285 JNIEXPORT jboolean JNICALL
286 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
287
288 JNIEXPORT void JNICALL
289 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
290
291 JNIEXPORT jobjectArray JNICALL
292 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
293
294 /* getStackTrace() and getAllStackTraces() method */
295 JNIEXPORT jobjectArray JNICALL
296 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
297
298 /*
299 * java.lang.SecurityManager
300 */
301 JNIEXPORT jclass JNICALL
302 JVM_CurrentLoadedClass(JNIEnv *env);
303
304 JNIEXPORT jobject JNICALL
305 JVM_CurrentClassLoader(JNIEnv *env);
306
307 JNIEXPORT jobjectArray JNICALL
308 JVM_GetClassContext(JNIEnv *env);
309
310 JNIEXPORT jint JNICALL
311 JVM_ClassDepth(JNIEnv *env, jstring name);
312
313 JNIEXPORT jint JNICALL
314 JVM_ClassLoaderDepth(JNIEnv *env);
315
316 /*
317 * java.lang.Package
318 */
319 JNIEXPORT jstring JNICALL
320 JVM_GetSystemPackage(JNIEnv *env, jstring name);
321
322 JNIEXPORT jobjectArray JNICALL
323 JVM_GetSystemPackages(JNIEnv *env);
324
325 /*
326 * java.io.ObjectInputStream
327 */
328 JNIEXPORT jobject JNICALL
329 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass,
330 jclass initClass);
331
332 JNIEXPORT jobject JNICALL
333 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass,
334 jint length);
335
336 JNIEXPORT jobject JNICALL
337 JVM_LatestUserDefinedLoader(JNIEnv *env);
338
339 /*
340 * This function has been deprecated and should not be considered
341 * part of the specified JVM interface.
342 */
343 JNIEXPORT jclass JNICALL
344 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass,
345 jstring currClassName);
346
347 /*
348 * java.lang.reflect.Array
349 */
350 JNIEXPORT jint JNICALL
351 JVM_GetArrayLength(JNIEnv *env, jobject arr);
352
353 JNIEXPORT jobject JNICALL
354 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
355
356 JNIEXPORT jvalue JNICALL
357 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
358
359 JNIEXPORT void JNICALL
360 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
361
362 JNIEXPORT void JNICALL
363 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
364 unsigned char vCode);
365
366 JNIEXPORT jobject JNICALL
367 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
368
369 JNIEXPORT jobject JNICALL
370 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
371
372 /*
373 * java.lang.Class and java.lang.ClassLoader
374 */
375 /*
376 * Returns the class in which the code invoking the native method
377 * belongs.
378 *
379 * Note that in JDK 1.1, native methods did not create a frame.
380 * In 1.2, they do. Therefore native methods like Class.forName
381 * can no longer look at the current frame for the caller class.
382 */
383 JNIEXPORT jclass JNICALL
384 JVM_GetCallerClass(JNIEnv *env, int n);
385
386 /*
387 * Find primitive classes
388 * utf: class name
389 */
390 JNIEXPORT jclass JNICALL
391 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
392
393 /*
394 * Link the class
395 */
396 JNIEXPORT void JNICALL
397 JVM_ResolveClass(JNIEnv *env, jclass cls);
398
399 /*
400 * Find a class from a given class loader. Throw ClassNotFoundException
401 * or NoClassDefFoundError depending on the value of the last
402 * argument.
403 */
404 JNIEXPORT jclass JNICALL
405 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init,
406 jobject loader, jboolean throwError);
407
408 /*
409 * Find a class from a boot class loader. Returns NULL if class not found.
410 */
411 JNIEXPORT jclass JNICALL
412 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
413
414 /*
415 * Find a class from a given class.
416 */
417 JNIEXPORT jclass JNICALL
418 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
419 jclass from);
420
421 /* Find a loaded class cached by the VM */
422 JNIEXPORT jclass JNICALL
423 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
424
425 /* Define a class */
426 JNIEXPORT jclass JNICALL
427 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
428 jsize len, jobject pd);
429
430 /* Define a class with a source (added in JDK1.5) */
431 JNIEXPORT jclass JNICALL
432 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
433 const jbyte *buf, jsize len, jobject pd,
434 const char *source);
435
436 /* Define a class with a source with conditional verification (added HSX 14)
437 * -Xverify:all will verify anyway, -Xverify:none will not verify,
438 * -Xverify:remote (default) will obey this conditional
439 * i.e. true = should_verify_class
440 */
441 JNIEXPORT jclass JNICALL
442 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name,
443 jobject loader, const jbyte *buf,
444 jsize len, jobject pd, const char *source,
445 jboolean verify);
446
447 /* Define a class with a source (MLVM) */
448 JNIEXPORT jclass JNICALL
449 JVM_DefineClassWithCP(JNIEnv *env, const char *name, jobject loader,
450 const jbyte *buf, jsize len, jobject pd,
451 const char *source,
452 // same args as JVM_DefineClassWithSource to this point
453 jobjectArray constants);
454
455 /*
456 * Reflection support functions
457 */
458
459 JNIEXPORT jstring JNICALL
460 JVM_GetClassName(JNIEnv *env, jclass cls);
461
462 JNIEXPORT jobjectArray JNICALL
463 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
464
465 JNIEXPORT jobject JNICALL
466 JVM_GetClassLoader(JNIEnv *env, jclass cls);
467
468 JNIEXPORT jboolean JNICALL
469 JVM_IsInterface(JNIEnv *env, jclass cls);
470
471 JNIEXPORT jobjectArray JNICALL
472 JVM_GetClassSigners(JNIEnv *env, jclass cls);
473
474 JNIEXPORT void JNICALL
475 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
476
477 JNIEXPORT jobject JNICALL
478 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
479
480 JNIEXPORT void JNICALL
481 JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain);
482
483 JNIEXPORT jboolean JNICALL
484 JVM_IsArrayClass(JNIEnv *env, jclass cls);
485
486 JNIEXPORT jboolean JNICALL
487 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
488
489 JNIEXPORT jclass JNICALL
490 JVM_GetComponentType(JNIEnv *env, jclass cls);
491
492 JNIEXPORT jint JNICALL
493 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
494
495 JNIEXPORT jobjectArray JNICALL
496 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
497
498 JNIEXPORT jclass JNICALL
499 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
500
501 /* Generics support (JDK 1.5) */
502 JNIEXPORT jstring JNICALL
503 JVM_GetClassSignature(JNIEnv *env, jclass cls);
504
505 /* Annotations support (JDK 1.5) */
506 JNIEXPORT jbyteArray JNICALL
507 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
508
509 /* Annotations support (JDK 1.6) */
510
511 // field is a handle to a java.lang.reflect.Field object
512 JNIEXPORT jbyteArray JNICALL
513 JVM_GetFieldAnnotations(JNIEnv *env, jobject field);
514
515 // method is a handle to a java.lang.reflect.Method object
516 JNIEXPORT jbyteArray JNICALL
517 JVM_GetMethodAnnotations(JNIEnv *env, jobject method);
518
519 // method is a handle to a java.lang.reflect.Method object
520 JNIEXPORT jbyteArray JNICALL
521 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method);
522
523 // method is a handle to a java.lang.reflect.Method object
524 JNIEXPORT jbyteArray JNICALL
525 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method);
526
527
528 /*
529 * New (JDK 1.4) reflection implementation
530 */
531
532 JNIEXPORT jobjectArray JNICALL
533 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
534
535 JNIEXPORT jobjectArray JNICALL
536 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
537
538 JNIEXPORT jobjectArray JNICALL
539 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
540
541 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
542 This returns the access flags for the class as specified in the
543 class file rather than searching the InnerClasses attribute (if
544 present) to find the source-level access flags. Only the values of
545 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
546 valid. */
547 JNIEXPORT jint JNICALL
548 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
549
550 /*
551 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
552 */
553
554 JNIEXPORT jobject JNICALL
555 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
556
557 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
558 (JNIEnv *env, jobject unused, jobject jcpool);
559
560 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
561 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
562
563 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
564 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
565
566 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
567 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
568
569 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
570 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
571
572 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
573 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
574
575 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
576 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
577
578 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
579 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
580
581 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
582 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
583
584 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
585 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
586
587 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
588 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
589
590 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
591 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
592
593 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
594 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
595
596 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
597 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
598
599 /*
600 * java.security.*
601 */
602
603 JNIEXPORT jobject JNICALL
604 JVM_DoPrivileged(JNIEnv *env, jclass cls,
605 jobject action, jobject context, jboolean wrapException);
606
607 JNIEXPORT jobject JNICALL
608 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
609
610 JNIEXPORT jobject JNICALL
611 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
612
613 /*
614 * Signal support, used to implement the shutdown sequence. Every VM must
615 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
616 * (^C) and the latter for external termination (kill, system shutdown, etc.).
617 * Other platform-dependent signal values may also be supported.
618 */
619
620 JNIEXPORT void * JNICALL
621 JVM_RegisterSignal(jint sig, void *handler);
622
623 JNIEXPORT jboolean JNICALL
624 JVM_RaiseSignal(jint sig);
625
626 JNIEXPORT jint JNICALL
627 JVM_FindSignal(const char *name);
628
629 /*
630 * Retrieve the assertion directives for the specified class.
631 */
632 JNIEXPORT jboolean JNICALL
633 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
634
635 /*
636 * Retrieve the assertion directives from the VM.
637 */
638 JNIEXPORT jobject JNICALL
639 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
640
641 /*
642 * sun.misc.AtomicLong
643 */
644 JNIEXPORT jboolean JNICALL
645 JVM_SupportsCX8(void);
646
647 JNIEXPORT jboolean JNICALL
648 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal);
649
650 /*
651 * com.sun.dtrace.jsdt support
652 */
653
654 #define JVM_TRACING_DTRACE_VERSION 1
655
656 /*
657 * Structure to pass one probe description to JVM.
658 *
659 * The VM will overwrite the definition of the referenced method with
660 * code that will fire the probe.
661 */
662 typedef struct {
663 jmethodID method;
664 jstring function;
665 jstring name;
666 void* reserved[4]; // for future use
667 } JVM_DTraceProbe;
668
669 /**
670 * Encapsulates the stability ratings for a DTrace provider field
671 */
672 typedef struct {
673 jint nameStability;
674 jint dataStability;
675 jint dependencyClass;
676 } JVM_DTraceInterfaceAttributes;
677
678 /*
679 * Structure to pass one provider description to JVM
680 */
681 typedef struct {
682 jstring name;
683 JVM_DTraceProbe* probes;
684 jint probe_count;
685 JVM_DTraceInterfaceAttributes providerAttributes;
686 JVM_DTraceInterfaceAttributes moduleAttributes;
687 JVM_DTraceInterfaceAttributes functionAttributes;
688 JVM_DTraceInterfaceAttributes nameAttributes;
689 JVM_DTraceInterfaceAttributes argsAttributes;
690 void* reserved[4]; // for future use
691 } JVM_DTraceProvider;
692
693 /*
694 * Get the version number the JVM was built with
695 */
696 JNIEXPORT jint JNICALL
697 JVM_DTraceGetVersion(JNIEnv* env);
698
699 /*
700 * Register new probe with given signature, return global handle
701 *
702 * The version passed in is the version that the library code was
703 * built with.
704 */
705 JNIEXPORT jlong JNICALL
706 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
707 jint providers_count, JVM_DTraceProvider* providers);
708
709 /*
710 * Check JSDT probe
711 */
712 JNIEXPORT jboolean JNICALL
713 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
714
715 /*
716 * Destroy custom DOF
717 */
718 JNIEXPORT void JNICALL
719 JVM_DTraceDispose(JNIEnv* env, jlong handle);
720
721 /*
722 * Check to see if DTrace is supported by OS
723 */
724 JNIEXPORT jboolean JNICALL
725 JVM_DTraceIsSupported(JNIEnv* env);
726
727 /*************************************************************************
728 PART 2: Support for the Verifier and Class File Format Checker
729 ************************************************************************/
730 /*
731 * Return the class name in UTF format. The result is valid
732 * until JVM_ReleaseUTf is called.
733 *
734 * The caller must treat the string as a constant and not modify it
735 * in any way.
736 */
737 JNIEXPORT const char * JNICALL
738 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
739
740 /*
741 * Returns the constant pool types in the buffer provided by "types."
742 */
743 JNIEXPORT void JNICALL
744 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
745
746 /*
747 * Returns the number of Constant Pool entries.
748 */
749 JNIEXPORT jint JNICALL
750 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
751
752 /*
753 * Returns the number of *declared* fields or methods.
754 */
755 JNIEXPORT jint JNICALL
756 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
757
758 JNIEXPORT jint JNICALL
759 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
760
761 /*
762 * Returns the CP indexes of exceptions raised by a given method.
763 * Places the result in the given buffer.
764 *
765 * The method is identified by method_index.
766 */
767 JNIEXPORT void JNICALL
768 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
769 unsigned short *exceptions);
770 /*
771 * Returns the number of exceptions raised by a given method.
772 * The method is identified by method_index.
773 */
774 JNIEXPORT jint JNICALL
775 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
776
777 /*
778 * Returns the byte code sequence of a given method.
779 * Places the result in the given buffer.
780 *
781 * The method is identified by method_index.
782 */
783 JNIEXPORT void JNICALL
784 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
785 unsigned char *code);
786
787 /*
788 * Returns the length of the byte code sequence of a given method.
789 * The method is identified by method_index.
790 */
791 JNIEXPORT jint JNICALL
792 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
793
794 /*
795 * A structure used to a capture exception table entry in a Java method.
796 */
797 typedef struct {
798 jint start_pc;
799 jint end_pc;
800 jint handler_pc;
801 jint catchType;
802 } JVM_ExceptionTableEntryType;
803
804 /*
805 * Returns the exception table entry at entry_index of a given method.
806 * Places the result in the given buffer.
807 *
808 * The method is identified by method_index.
809 */
810 JNIEXPORT void JNICALL
811 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
812 jint entry_index,
813 JVM_ExceptionTableEntryType *entry);
814
815 /*
816 * Returns the length of the exception table of a given method.
817 * The method is identified by method_index.
818 */
819 JNIEXPORT jint JNICALL
820 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
821
822 /*
823 * Returns the modifiers of a given field.
824 * The field is identified by field_index.
825 */
826 JNIEXPORT jint JNICALL
827 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
828
829 /*
830 * Returns the modifiers of a given method.
831 * The method is identified by method_index.
832 */
833 JNIEXPORT jint JNICALL
834 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
835
836 /*
837 * Returns the number of local variables of a given method.
838 * The method is identified by method_index.
839 */
840 JNIEXPORT jint JNICALL
841 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
842
843 /*
844 * Returns the number of arguments (including this pointer) of a given method.
845 * The method is identified by method_index.
846 */
847 JNIEXPORT jint JNICALL
848 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
849
850 /*
851 * Returns the maximum amount of stack (in words) used by a given method.
852 * The method is identified by method_index.
853 */
854 JNIEXPORT jint JNICALL
855 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
856
857 /*
858 * Is a given method a constructor.
859 * The method is identified by method_index.
860 */
861 JNIEXPORT jboolean JNICALL
862 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
863
864 /*
865 * Returns the name of a given method in UTF format.
866 * The result remains valid until JVM_ReleaseUTF is called.
867 *
868 * The caller must treat the string as a constant and not modify it
869 * in any way.
870 */
871 JNIEXPORT const char * JNICALL
872 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
873
874 /*
875 * Returns the signature of a given method in UTF format.
876 * The result remains valid until JVM_ReleaseUTF 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_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
883
884 /*
885 * Returns the name of the field refered to at a given constant pool
886 * 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_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
896
897 /*
898 * Returns the name of the method refered to at a given constant pool
899 * index.
900 *
901 * The result is in UTF format and remains valid until JVM_ReleaseUTF
902 * is called.
903 *
904 * The caller must treat the string as a constant and not modify it
905 * in any way.
906 */
907 JNIEXPORT const char * JNICALL
908 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
909
910 /*
911 * Returns the signature of the method refered to at a given constant pool
912 * index.
913 *
914 * The result is in UTF format and remains valid until JVM_ReleaseUTF
915 * is called.
916 *
917 * The caller must treat the string as a constant and not modify it
918 * in any way.
919 */
920 JNIEXPORT const char * JNICALL
921 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
922
923 /*
924 * Returns the signature of the field refered to at a given constant pool
925 * index.
926 *
927 * The result is in UTF format and remains valid until JVM_ReleaseUTF
928 * is called.
929 *
930 * The caller must treat the string as a constant and not modify it
931 * in any way.
932 */
933 JNIEXPORT const char * JNICALL
934 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
935
936 /*
937 * Returns the class name refered to at a given constant pool index.
938 *
939 * The result is in UTF format and remains valid until JVM_ReleaseUTF
940 * is called.
941 *
942 * The caller must treat the string as a constant and not modify it
943 * in any way.
944 */
945 JNIEXPORT const char * JNICALL
946 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
947
948 /*
949 * Returns the class name refered to at a given constant pool index.
950 *
951 * The constant pool entry must refer to a CONSTANT_Fieldref.
952 *
953 * The result is in UTF format and remains valid until JVM_ReleaseUTF
954 * is called.
955 *
956 * The caller must treat the string as a constant and not modify it
957 * in any way.
958 */
959 JNIEXPORT const char * JNICALL
960 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
961
962 /*
963 * Returns the class name refered to at a given constant pool index.
964 *
965 * The constant pool entry must refer to CONSTANT_Methodref or
966 * CONSTANT_InterfaceMethodref.
967 *
968 * The result is in UTF format and remains valid until JVM_ReleaseUTF
969 * is called.
970 *
971 * The caller must treat the string as a constant and not modify it
972 * in any way.
973 */
974 JNIEXPORT const char * JNICALL
975 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
976
977 /*
978 * Returns the modifiers of a field in calledClass. The field is
979 * referred to in class cb at constant pool entry index.
980 *
981 * The caller must treat the string as a constant and not modify it
982 * in any way.
983 *
984 * Returns -1 if the field does not exist in calledClass.
985 */
986 JNIEXPORT jint JNICALL
987 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
988
989 /*
990 * Returns the modifiers of a method in calledClass. The method is
991 * referred to in class cb at constant pool entry index.
992 *
993 * Returns -1 if the method does not exist in calledClass.
994 */
995 JNIEXPORT jint JNICALL
996 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
997
998 /*
999 * Releases the UTF string obtained from the VM.
1000 */
1001 JNIEXPORT void JNICALL
1002 JVM_ReleaseUTF(const char *utf);
1003
1004 /*
1005 * Compare if two classes are in the same package.
1006 */
1007 JNIEXPORT jboolean JNICALL
1008 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1009
1010 /* Constants in class files */
1011
1012 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */
1013 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */
1014 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */
1015 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */
1016 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */
1017 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */
1018 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */
1019 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */
1020 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */
1021 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */
1022 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */
1023 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */
1024 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */
1025 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */
1026 #define JVM_ACC_STRICT 0x0800 /* strict floating point */
1027 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */
1028 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */
1029 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */
1030
1031 #define JVM_ACC_PUBLIC_BIT 0
1032 #define JVM_ACC_PRIVATE_BIT 1
1033 #define JVM_ACC_PROTECTED_BIT 2
1034 #define JVM_ACC_STATIC_BIT 3
1035 #define JVM_ACC_FINAL_BIT 4
1036 #define JVM_ACC_SYNCHRONIZED_BIT 5
1037 #define JVM_ACC_SUPER_BIT 5
1038 #define JVM_ACC_VOLATILE_BIT 6
1039 #define JVM_ACC_BRIDGE_BIT 6
1040 #define JVM_ACC_TRANSIENT_BIT 7
1041 #define JVM_ACC_VARARGS_BIT 7
1042 #define JVM_ACC_NATIVE_BIT 8
1043 #define JVM_ACC_INTERFACE_BIT 9
1044 #define JVM_ACC_ABSTRACT_BIT 10
1045 #define JVM_ACC_STRICT_BIT 11
1046 #define JVM_ACC_SYNTHETIC_BIT 12
1047 #define JVM_ACC_ANNOTATION_BIT 13
1048 #define JVM_ACC_ENUM_BIT 14
1049
1050 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
1051 enum {
1052 JVM_CONSTANT_Utf8 = 1,
1053 JVM_CONSTANT_Unicode, /* unused */
1054 JVM_CONSTANT_Integer,
1055 JVM_CONSTANT_Float,
1056 JVM_CONSTANT_Long,
1057 JVM_CONSTANT_Double,
1058 JVM_CONSTANT_Class,
1059 JVM_CONSTANT_String,
1060 JVM_CONSTANT_Fieldref,
1061 JVM_CONSTANT_Methodref,
1062 JVM_CONSTANT_InterfaceMethodref,
1063 JVM_CONSTANT_NameAndType,
1064 JVM_CONSTANT_MethodHandle = 15, // JSR 292
1065 JVM_CONSTANT_MethodType = 16, // JSR 292
1066 JVM_CONSTANT_InvokeDynamic = 17 // JSR 292
1067 };
1068
1069 /* JVM_CONSTANT_MethodHandle subtypes */
1070 enum {
1071 JVM_REF_getField = 1,
1072 JVM_REF_getStatic = 2,
1073 JVM_REF_putField = 3,
1074 JVM_REF_putStatic = 4,
1075 JVM_REF_invokeVirtual = 5,
1076 JVM_REF_invokeStatic = 6,
1077 JVM_REF_invokeSpecial = 7,
1078 JVM_REF_newInvokeSpecial = 8,
1079 JVM_REF_invokeInterface = 9
1080 };
1081
1082 /* Used in the newarray instruction. */
1083
1084 #define JVM_T_BOOLEAN 4
1085 #define JVM_T_CHAR 5
1086 #define JVM_T_FLOAT 6
1087 #define JVM_T_DOUBLE 7
1088 #define JVM_T_BYTE 8
1089 #define JVM_T_SHORT 9
1090 #define JVM_T_INT 10
1091 #define JVM_T_LONG 11
1092
1093 /* JVM method signatures */
1094
1095 #define JVM_SIGNATURE_ARRAY '['
1096 #define JVM_SIGNATURE_BYTE 'B'
1097 #define JVM_SIGNATURE_CHAR 'C'
1098 #define JVM_SIGNATURE_CLASS 'L'
1099 #define JVM_SIGNATURE_ENDCLASS ';'
1100 #define JVM_SIGNATURE_ENUM 'E'
1101 #define JVM_SIGNATURE_FLOAT 'F'
1102 #define JVM_SIGNATURE_DOUBLE 'D'
1103 #define JVM_SIGNATURE_FUNC '('
1104 #define JVM_SIGNATURE_ENDFUNC ')'
1105 #define JVM_SIGNATURE_INT 'I'
1106 #define JVM_SIGNATURE_LONG 'J'
1107 #define JVM_SIGNATURE_SHORT 'S'
1108 #define JVM_SIGNATURE_VOID 'V'
1109 #define JVM_SIGNATURE_BOOLEAN 'Z'
1110
1111 /*
1112 * A function defined by the byte-code verifier and called by the VM.
1113 * This is not a function implemented in the VM.
1114 *
1115 * Returns JNI_FALSE if verification fails. A detailed error message
1116 * will be places in msg_buf, whose length is specified by buf_len.
1117 */
1118 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1119 jclass cb,
1120 char * msg_buf,
1121 jint buf_len);
1122
1123
1124 /*
1125 * Support for a VM-independent class format checker.
1126 */
1127 typedef struct {
1128 unsigned long code; /* byte code */
1129 unsigned long excs; /* exceptions */
1130 unsigned long etab; /* catch table */
1131 unsigned long lnum; /* line number */
1132 unsigned long lvar; /* local vars */
1133 } method_size_info;
1134
1135 typedef struct {
1136 unsigned int constants; /* constant pool */
1137 unsigned int fields;
1138 unsigned int methods;
1139 unsigned int interfaces;
1140 unsigned int fields2; /* number of static 2-word fields */
1141 unsigned int innerclasses; /* # of records in InnerClasses attr */
1142
1143 method_size_info clinit; /* memory used in clinit */
1144 method_size_info main; /* used everywhere else */
1145 } class_size_info;
1146
1147 /*
1148 * Functions defined in libjava.so to perform string conversions.
1149 *
1150 */
1151
1152 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1153
1154 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1155
1156 /* This is the function defined in libjava.so that performs class
1157 * format checks. This functions fills in size information about
1158 * the class file and returns:
1159 *
1160 * 0: good
1161 * -1: out of memory
1162 * -2: bad format
1163 * -3: unsupported version
1164 * -4: bad class name
1165 */
1166
1167 typedef jint (*check_format_fn_t)(char *class_name,
1168 unsigned char *data,
1169 unsigned int data_size,
1170 class_size_info *class_size,
1171 char *message_buffer,
1172 jint buffer_length,
1173 jboolean measure_only,
1174 jboolean check_relaxed);
1175
1176 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1177 JVM_ACC_FINAL | \
1178 JVM_ACC_SUPER | \
1179 JVM_ACC_INTERFACE | \
1180 JVM_ACC_ABSTRACT | \
1181 JVM_ACC_ANNOTATION | \
1182 JVM_ACC_ENUM | \
1183 JVM_ACC_SYNTHETIC)
1184
1185 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1186 JVM_ACC_PRIVATE | \
1187 JVM_ACC_PROTECTED | \
1188 JVM_ACC_STATIC | \
1189 JVM_ACC_FINAL | \
1190 JVM_ACC_VOLATILE | \
1191 JVM_ACC_TRANSIENT | \
1192 JVM_ACC_ENUM | \
1193 JVM_ACC_SYNTHETIC)
1194
1195 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1196 JVM_ACC_PRIVATE | \
1197 JVM_ACC_PROTECTED | \
1198 JVM_ACC_STATIC | \
1199 JVM_ACC_FINAL | \
1200 JVM_ACC_SYNCHRONIZED | \
1201 JVM_ACC_BRIDGE | \
1202 JVM_ACC_VARARGS | \
1203 JVM_ACC_NATIVE | \
1204 JVM_ACC_ABSTRACT | \
1205 JVM_ACC_STRICT | \
1206 JVM_ACC_SYNTHETIC)
1207
1208 /*
1209 * This is the function defined in libjava.so to perform path
1210 * canonicalization. VM call this function before opening jar files
1211 * to load system classes.
1212 *
1213 */
1214
1215 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1216
1217 /*************************************************************************
1218 PART 3: I/O and Network Support
1219 ************************************************************************/
1220
1221 /* Note that the JVM IO functions are expected to return JVM_IO_ERR
1222 * when there is any kind of error. The caller can then use the
1223 * platform specific support (e.g., errno) to get the detailed
1224 * error info. The JVM_GetLastErrorString procedure may also be used
1225 * to obtain a descriptive error string.
1226 */
1227 #define JVM_IO_ERR (-1)
1228
1229 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO
1230 * operation has been disrupted by Thread.interrupt. There are a
1231 * number of technical difficulties related to interruptible IO that
1232 * need to be solved. For example, most existing programs do not handle
1233 * InterruptedIOExceptions specially, they simply treat those as any
1234 * IOExceptions, which typically indicate fatal errors.
1235 *
1236 * There are also two modes of operation for interruptible IO. In the
1237 * resumption mode, an interrupted IO operation is guaranteed not to
1238 * have any side-effects, and can be restarted. In the termination mode,
1239 * an interrupted IO operation corrupts the underlying IO stream, so
1240 * that the only reasonable operation on an interrupted stream is to
1241 * close that stream. The resumption mode seems to be impossible to
1242 * implement on Win32 and Solaris. Implementing the termination mode is
1243 * easier, but it's not clear that's the right semantics.
1244 *
1245 * Interruptible IO is not supported on Win32.It can be enabled/disabled
1246 * using a compile-time flag on Solaris. Third-party JVM ports do not
1247 * need to implement interruptible IO.
1248 */
1249 #define JVM_IO_INTR (-2)
1250
1251 /* Write a string into the given buffer, in the platform's local encoding,
1252 * that describes the most recent system-level error to occur in this thread.
1253 * Return the length of the string or zero if no error occurred.
1254 */
1255 JNIEXPORT jint JNICALL
1256 JVM_GetLastErrorString(char *buf, int len);
1257
1258 /*
1259 * Convert a pathname into native format. This function does syntactic
1260 * cleanup, such as removing redundant separator characters. It modifies
1261 * the given pathname string in place.
1262 */
1263 JNIEXPORT char * JNICALL
1264 JVM_NativePath(char *);
1265
1266 /*
1267 * JVM I/O error codes
1268 */
1269 #define JVM_EEXIST -100
1270
1271 /*
1272 * Open a file descriptor. This function returns a negative error code
1273 * on error, and a non-negative integer that is the file descriptor on
1274 * success.
1275 */
1276 JNIEXPORT jint JNICALL
1277 JVM_Open(const char *fname, jint flags, jint mode);
1278
1279 /*
1280 * Close a file descriptor. This function returns -1 on error, and 0
1281 * on success.
1282 *
1283 * fd the file descriptor to close.
1284 */
1285 JNIEXPORT jint JNICALL
1286 JVM_Close(jint fd);
1287
1288 /*
1289 * Read data from a file decriptor into a char array.
1290 *
1291 * fd the file descriptor to read from.
1292 * buf the buffer where to put the read data.
1293 * nbytes the number of bytes to read.
1294 *
1295 * This function returns -1 on error, and 0 on success.
1296 */
1297 JNIEXPORT jint JNICALL
1298 JVM_Read(jint fd, char *buf, jint nbytes);
1299
1300 /*
1301 * Write data from a char array to a file decriptor.
1302 *
1303 * fd the file descriptor to read from.
1304 * buf the buffer from which to fetch the data.
1305 * nbytes the number of bytes to write.
1306 *
1307 * This function returns -1 on error, and 0 on success.
1308 */
1309 JNIEXPORT jint JNICALL
1310 JVM_Write(jint fd, char *buf, jint nbytes);
1311
1312 /*
1313 * Returns the number of bytes available for reading from a given file
1314 * descriptor
1315 */
1316 JNIEXPORT jint JNICALL
1317 JVM_Available(jint fd, jlong *pbytes);
1318
1319 /*
1320 * Move the file descriptor pointer from whence by offset.
1321 *
1322 * fd the file descriptor to move.
1323 * offset the number of bytes to move it by.
1324 * whence the start from where to move it.
1325 *
1326 * This function returns the resulting pointer location.
1327 */
1328 JNIEXPORT jlong JNICALL
1329 JVM_Lseek(jint fd, jlong offset, jint whence);
1330
1331 /*
1332 * Set the length of the file associated with the given descriptor to the given
1333 * length. If the new length is longer than the current length then the file
1334 * is extended; the contents of the extended portion are not defined. The
1335 * value of the file pointer is undefined after this procedure returns.
1336 */
1337 JNIEXPORT jint JNICALL
1338 JVM_SetLength(jint fd, jlong length);
1339
1340 /*
1341 * Synchronize the file descriptor's in memory state with that of the
1342 * physical device. Return of -1 is an error, 0 is OK.
1343 */
1344 JNIEXPORT jint JNICALL
1345 JVM_Sync(jint fd);
1346
1347 /*
1348 * Networking library support
1349 */
1350
1351 JNIEXPORT jint JNICALL
1352 JVM_InitializeSocketLibrary(void);
1353
1354 struct sockaddr;
1355
1356 JNIEXPORT jint JNICALL
1357 JVM_Socket(jint domain, jint type, jint protocol);
1358
1359 JNIEXPORT jint JNICALL
1360 JVM_SocketClose(jint fd);
1361
1362 JNIEXPORT jint JNICALL
1363 JVM_SocketShutdown(jint fd, jint howto);
1364
1365 JNIEXPORT jint JNICALL
1366 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags);
1367
1368 JNIEXPORT jint JNICALL
1369 JVM_Send(jint fd, char *buf, jint nBytes, jint flags);
1370
1371 JNIEXPORT jint JNICALL
1372 JVM_Timeout(int fd, long timeout);
1373
1374 JNIEXPORT jint JNICALL
1375 JVM_Listen(jint fd, jint count);
1376
1377 JNIEXPORT jint JNICALL
1378 JVM_Connect(jint fd, struct sockaddr *him, jint len);
1379
1380 JNIEXPORT jint JNICALL
1381 JVM_Bind(jint fd, struct sockaddr *him, jint len);
1382
1383 JNIEXPORT jint JNICALL
1384 JVM_Accept(jint fd, struct sockaddr *him, jint *len);
1385
1386 JNIEXPORT jint JNICALL
1387 JVM_RecvFrom(jint fd, char *buf, int nBytes,
1388 int flags, struct sockaddr *from, int *fromlen);
1389
1390 JNIEXPORT jint JNICALL
1391 JVM_SendTo(jint fd, char *buf, int len,
1392 int flags, struct sockaddr *to, int tolen);
1393
1394 JNIEXPORT jint JNICALL
1395 JVM_SocketAvailable(jint fd, jint *result);
1396
1397
1398 JNIEXPORT jint JNICALL
1399 JVM_GetSockName(jint fd, struct sockaddr *him, int *len);
1400
1401 JNIEXPORT jint JNICALL
1402 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen);
1403
1404 JNIEXPORT jint JNICALL
1405 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen);
1406
1407 /*
1408 * These routines are only reentrant on Windows
1409 */
1410
1411 #ifdef _WINDOWS
1412
1413 JNIEXPORT struct protoent * JNICALL
1414 JVM_GetProtoByName(char* name);
1415
1416 JNIEXPORT struct hostent* JNICALL
1417 JVM_GetHostByAddr(const char* name, int len, int type);
1418
1419 JNIEXPORT struct hostent* JNICALL
1420 JVM_GetHostByName(char* name);
1421
1422 #endif /* _WINDOWS */
1423
1424 JNIEXPORT int JNICALL
1425 JVM_GetHostName(char* name, int namelen);
1426
1427 /*
1428 * The standard printing functions supported by the Java VM. (Should they
1429 * be renamed to JVM_* in the future?
1430 */
1431
1432 /*
1433 * BE CAREFUL! The following functions do not implement the
1434 * full feature set of standard C printf formats.
1435 */
1436 int
1437 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1438
1439 int
1440 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1441
1442 int
1443 jio_fprintf(FILE *, const char *fmt, ...);
1444
1445 int
1446 jio_vfprintf(FILE *, const char *fmt, va_list args);
1447
1448
1449 JNIEXPORT void * JNICALL
1450 JVM_RawMonitorCreate(void);
1451
1452 JNIEXPORT void JNICALL
1453 JVM_RawMonitorDestroy(void *mon);
1454
1455 JNIEXPORT jint JNICALL
1456 JVM_RawMonitorEnter(void *mon);
1457
1458 JNIEXPORT void JNICALL
1459 JVM_RawMonitorExit(void *mon);
1460
1461
1462 #ifdef SUPPORT_OLD_REFLECTION
1463
1464 /*
1465 * Support for old native code-based (pre-JDK 1.4) reflection implementation.
1466 * Disabled by default in the product build.
1467 *
1468 * See reflection.hpp for information on SUPPORT_OLD_REFLECTION
1469 */
1470
1471 /*
1472 * reflecting fields and methods.
1473 * which: 0 --- MEMBER_PUBLIC
1474 * 1 --- MEMBER_DECLARED
1475 * NOTE: absent in product build by default
1476 */
1477
1478 JNIEXPORT jobjectArray JNICALL
1479 JVM_GetClassFields(JNIEnv *env, jclass cls, jint which);
1480
1481 JNIEXPORT jobjectArray JNICALL
1482 JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which);
1483
1484 JNIEXPORT jobjectArray JNICALL
1485 JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which);
1486
1487 JNIEXPORT jobject JNICALL
1488 JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which);
1489
1490 JNIEXPORT jobject JNICALL
1491 JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types,
1492 jint which);
1493 JNIEXPORT jobject JNICALL
1494 JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types,
1495 jint which);
1496
1497 /*
1498 * Implements Class.newInstance
1499 */
1500 JNIEXPORT jobject JNICALL
1501 JVM_NewInstance(JNIEnv *env, jclass cls);
1502
1503 /*
1504 * java.lang.reflect.Field
1505 */
1506 JNIEXPORT jobject JNICALL
1507 JVM_GetField(JNIEnv *env, jobject field, jobject obj);
1508
1509 JNIEXPORT jvalue JNICALL
1510 JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj,
1511 unsigned char wCode);
1512
1513 JNIEXPORT void JNICALL
1514 JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val);
1515
1516 JNIEXPORT void JNICALL
1517 JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v,
1518 unsigned char vCode);
1519
1520 /*
1521 * java.lang.reflect.Method
1522 */
1523 JNIEXPORT jobject JNICALL
1524 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1525
1526 /*
1527 * java.lang.reflect.Constructor
1528 */
1529 JNIEXPORT jobject JNICALL
1530 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1531
1532 #endif /* SUPPORT_OLD_REFLECTION */
1533
1534 /*
1535 * java.lang.management support
1536 */
1537 JNIEXPORT void* JNICALL
1538 JVM_GetManagement(jint version);
1539
1540 /*
1541 * com.sun.tools.attach.VirtualMachine support
1542 *
1543 * Initialize the agent properties with the properties maintained in the VM.
1544 */
1545 JNIEXPORT jobject JNICALL
1546 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1547
1548 /* Generics reflection support.
1549 *
1550 * Returns information about the given class's EnclosingMethod
1551 * attribute, if present, or null if the class had no enclosing
1552 * method.
1553 *
1554 * If non-null, the returned array contains three elements. Element 0
1555 * is the java.lang.Class of which the enclosing method is a member,
1556 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1557 * method's name and descriptor, respectively.
1558 */
1559 JNIEXPORT jobjectArray JNICALL
1560 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1561
1562 /*
1563 * Java thread state support
1564 */
1565 enum {
1566 JAVA_THREAD_STATE_NEW = 0,
1567 JAVA_THREAD_STATE_RUNNABLE = 1,
1568 JAVA_THREAD_STATE_BLOCKED = 2,
1569 JAVA_THREAD_STATE_WAITING = 3,
1570 JAVA_THREAD_STATE_TIMED_WAITING = 4,
1571 JAVA_THREAD_STATE_TERMINATED = 5,
1572 JAVA_THREAD_STATE_COUNT = 6
1573 };
1574
1575 /*
1576 * Returns an array of the threadStatus values representing the
1577 * given Java thread state. Returns NULL if the VM version is
1578 * incompatible with the JDK or doesn't support the given
1579 * Java thread state.
1580 */
1581 JNIEXPORT jintArray JNICALL
1582 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState);
1583
1584 /*
1585 * Returns an array of the substate names representing the
1586 * given Java thread state. Returns NULL if the VM version is
1587 * incompatible with the JDK or the VM doesn't support
1588 * the given Java thread state.
1589 * values must be the jintArray returned from JVM_GetThreadStateValues
1590 * and javaThreadState.
1591 */
1592 JNIEXPORT jobjectArray JNICALL
1593 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values);
1594
1595 /* =========================================================================
1596 * The following defines a private JVM interface that the JDK can query
1597 * for the JVM version and capabilities. sun.misc.Version defines
1598 * the methods for getting the VM version and its capabilities.
1599 *
1600 * When a new bit is added, the following should be updated to provide
1601 * access to the new capability:
1602 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1603 * SDK: Version class
1604 *
1605 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1606 * JVM to query for the JDK version and capabilities.
1607 *
1608 * When a new bit is added, the following should be updated to provide
1609 * access to the new capability:
1610 * HS: JDK_Version class
1611 * SDK: JDK_GetVersionInfo0
1612 *
1613 * ==========================================================================
1614 */
1615 typedef struct {
1616 /* HotSpot Express VM version string:
1617 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>]
1618 */
1619 unsigned int jvm_version; /* Consists of major.minor.0.build */
1620 unsigned int update_version : 8; /* 0 in HotSpot Express VM */
1621 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */
1622 unsigned int reserved1 : 16;
1623 unsigned int reserved2;
1624
1625 /* The following bits represents JVM supports that JDK has dependency on.
1626 * JDK can use these bits to determine which JVM version
1627 * and support it has to maintain runtime compatibility.
1628 *
1629 * When a new bit is added in a minor or update release, make sure
1630 * the new bit is also added in the main/baseline.
1631 */
1632 unsigned int is_attachable : 1;
1633 unsigned int is_kernel_jvm : 1;
1634 unsigned int : 30;
1635 unsigned int : 32;
1636 unsigned int : 32;
1637 } jvm_version_info;
1638
1639 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1640 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1641 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp).
1642 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1643 /* Build number is available in all HotSpot Express VM builds.
1644 * It is defined in make/hotspot_version file.
1645 */
1646 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1647
1648 JNIEXPORT void JNICALL
1649 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1650
1651 typedef struct {
1652 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
1653 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */
1654 /* and build number (xx) */
1655 unsigned int update_version : 8; /* Update release version (uu) */
1656 unsigned int special_update_version : 8; /* Special update release version (c)*/
1657 unsigned int reserved1 : 16;
1658 unsigned int reserved2;
1659
1660 /* The following bits represents new JDK supports that VM has dependency on.
1661 * VM implementation can use these bits to determine which JDK version
1662 * and support it has to maintain runtime compatibility.
1663 *
1664 * When a new bit is added in a minor or update release, make sure
1665 * the new bit is also added in the main/baseline.
1666 */
1667 unsigned int thread_park_blocker : 1;
1668 unsigned int : 31;
1669 unsigned int : 32;
1670 unsigned int : 32;
1671 } jdk_version_info;
1672
1673 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1674 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1675 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1676
1677 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
1678 * It will be zero for internal builds.
1679 */
1680 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1681
1682 /*
1683 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1684 * that is dynamically looked up by JVM.
1685 */
1686 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1687
1688 /*
1689 * This structure is used by the launcher to get the default thread
1690 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1691 * version of 1.1. As it is not supported otherwise, it has been removed
1692 * from jni.h
1693 */
1694 typedef struct JDK1_1InitArgs {
1695 jint version;
1696
1697 char **properties;
1698 jint checkSource;
1699 jint nativeStackSize;
1700 jint javaStackSize;
1701 jint minHeapSize;
1702 jint maxHeapSize;
1703 jint verifyMode;
1704 char *classpath;
1705
1706 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1707 void (JNICALL *exit)(jint code);
1708 void (JNICALL *abort)(void);
1709
1710 jint enableClassGC;
1711 jint enableVerboseGC;
1712 jint disableAsyncGC;
1713 jint verbose;
1714 jboolean debugging;
1715 jint debugPort;
1716 } JDK1_1InitArgs;
1717
1718 #ifdef __cplusplus
1719 } /* extern "C" */
1720 #endif /* __cplusplus */
1721
1722 #endif /* !_JAVASOFT_JVM_H_ */
1723
1724 #endif // SHARE_VM_PRIMS_JVM_H