1 /*
2 * Copyright (c) 1997, 2011, 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 #ifdef TARGET_OS_FAMILY_linux
31 # include "jvm_linux.h"
32 #endif
33 #ifdef TARGET_OS_FAMILY_solaris
34 # include "jvm_solaris.h"
35 #endif
36 #ifdef TARGET_OS_FAMILY_windows
37 # include "jvm_windows.h"
38 #endif
39
40 #ifndef _JAVASOFT_JVM_H_
41 #define _JAVASOFT_JVM_H_
42
43 // HotSpot integration note:
44 //
45 // This file and jvm.h used with the JDK are identical,
46 // except for the three includes removed below and the
47 // SUPPORT_OLD_REFLECTION sections cut out of the JDK's jvm.h.
48
49 // #include <sys/stat.h>
50 // #include "jni.h"
51 // #include "jvm_md.h"
52
53
54 #ifdef __cplusplus
55 extern "C" {
56 #endif
57
58 /*
59 * This file contains additional functions exported from the VM.
60 * These functions are complementary to the standard JNI support.
61 * There are three parts to this file:
62 *
63 * First, this file contains the VM-related functions needed by native
64 * libraries in the standard Java API. For example, the java.lang.Object
65 * class needs VM-level functions that wait for and notify monitors.
66 *
67 * Second, this file contains the functions and constant definitions
68 * needed by the byte code verifier and class file format checker.
69 * These functions allow the verifier and format checker to be written
70 * in a VM-independent way.
71 *
72 * Third, this file contains various I/O and nerwork operations needed
73 * by the standard Java I/O and network APIs.
74 */
75
76 /*
77 * Bump the version number when either of the following happens:
78 *
79 * 1. There is a change in JVM_* functions.
80 *
81 * 2. There is a change in the contract between VM and Java classes.
82 * For example, if the VM relies on a new private field in Thread
83 * class.
84 */
85
86 #define JVM_INTERFACE_VERSION 4
87
88
89 JNIEXPORT jint JNICALL
90 JVM_GetInterfaceVersion(void);
91
92 /*************************************************************************
93 PART 1: Functions for Native Libraries
94 ************************************************************************/
95 /*
96 * java.lang.Object
97 */
98 JNIEXPORT jint JNICALL
99 JVM_IHashCode(JNIEnv *env, jobject obj);
100
101 JNIEXPORT void JNICALL
102 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
103
104 JNIEXPORT void JNICALL
105 JVM_MonitorNotify(JNIEnv *env, jobject obj);
106
107 JNIEXPORT void JNICALL
108 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
109
110 JNIEXPORT jobject JNICALL
111 JVM_Clone(JNIEnv *env, jobject obj);
112
113 /*
114 * java.lang.String
115 */
116 JNIEXPORT jstring JNICALL
117 JVM_InternString(JNIEnv *env, jstring str);
118
119 /*
120 * java.lang.System
121 */
122 JNIEXPORT jlong JNICALL
123 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
124
125 JNIEXPORT jlong JNICALL
126 JVM_NanoTime(JNIEnv *env, jclass ignored);
127
128 JNIEXPORT void JNICALL
129 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
130 jobject dst, jint dst_pos, jint length);
131
132 JNIEXPORT jobject JNICALL
133 JVM_InitProperties(JNIEnv *env, jobject p);
134
135 /*
136 * java.io.File
137 */
138 JNIEXPORT void JNICALL
139 JVM_OnExit(void (*func)(void));
140
141 /*
142 * java.lang.Runtime
143 */
144 JNIEXPORT void JNICALL
145 JVM_Exit(jint code);
146
147 JNIEXPORT void JNICALL
148 JVM_Halt(jint code);
149
150 JNIEXPORT void JNICALL
151 JVM_GC(void);
152
153 /* Returns the number of real-time milliseconds that have elapsed since the
154 * least-recently-inspected heap object was last inspected by the garbage
155 * collector.
156 *
157 * For simple stop-the-world collectors this value is just the time
158 * since the most recent collection. For generational collectors it is the
159 * time since the oldest generation was most recently collected. Other
160 * collectors are free to return a pessimistic estimate of the elapsed time, or
161 * simply the time since the last full collection was performed.
162 *
163 * Note that in the presence of reference objects, a given object that is no
164 * longer strongly reachable may have to be inspected multiple times before it
165 * can be reclaimed.
166 */
167 JNIEXPORT jlong JNICALL
168 JVM_MaxObjectInspectionAge(void);
169
170 JNIEXPORT void JNICALL
171 JVM_TraceInstructions(jboolean on);
172
173 JNIEXPORT void JNICALL
174 JVM_TraceMethodCalls(jboolean on);
175
176 JNIEXPORT jlong JNICALL
177 JVM_TotalMemory(void);
178
179 JNIEXPORT jlong JNICALL
180 JVM_FreeMemory(void);
181
182 JNIEXPORT jlong JNICALL
183 JVM_MaxMemory(void);
184
185 JNIEXPORT jint JNICALL
186 JVM_ActiveProcessorCount(void);
187
188 JNIEXPORT void * JNICALL
189 JVM_LoadLibrary(const char *name);
190
191 JNIEXPORT void JNICALL
192 JVM_UnloadLibrary(void * handle);
193
194 JNIEXPORT void * JNICALL
195 JVM_FindLibraryEntry(void *handle, const char *name);
196
197 JNIEXPORT jboolean JNICALL
198 JVM_IsSupportedJNIVersion(jint version);
199
200 /*
201 * java.lang.Float and java.lang.Double
202 */
203 JNIEXPORT jboolean JNICALL
204 JVM_IsNaN(jdouble d);
205
206 /*
207 * java.lang.Throwable
208 */
209 JNIEXPORT void JNICALL
210 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
211
212 JNIEXPORT void JNICALL
213 JVM_PrintStackTrace(JNIEnv *env, jobject throwable, jobject printable);
214
215 JNIEXPORT jint JNICALL
216 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
217
218 JNIEXPORT jobject JNICALL
219 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
220
221 /*
222 * java.lang.Compiler
223 */
224 JNIEXPORT void JNICALL
225 JVM_InitializeCompiler (JNIEnv *env, jclass compCls);
226
227 JNIEXPORT jboolean JNICALL
228 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls);
229
230 JNIEXPORT jboolean JNICALL
231 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls);
232
233 JNIEXPORT jboolean JNICALL
234 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname);
235
236 JNIEXPORT jobject JNICALL
237 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg);
238
239 JNIEXPORT void JNICALL
240 JVM_EnableCompiler(JNIEnv *env, jclass compCls);
241
242 JNIEXPORT void JNICALL
243 JVM_DisableCompiler(JNIEnv *env, jclass compCls);
244
245 /*
246 * java.lang.Thread
247 */
248 JNIEXPORT void JNICALL
249 JVM_StartThread(JNIEnv *env, jobject thread);
250
251 JNIEXPORT void JNICALL
252 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
253
254 JNIEXPORT jboolean JNICALL
255 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
256
257 JNIEXPORT void JNICALL
258 JVM_SuspendThread(JNIEnv *env, jobject thread);
259
260 JNIEXPORT void JNICALL
261 JVM_ResumeThread(JNIEnv *env, jobject thread);
262
263 JNIEXPORT void JNICALL
264 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
265
266 JNIEXPORT void JNICALL
267 JVM_Yield(JNIEnv *env, jclass threadClass);
268
269 JNIEXPORT void JNICALL
270 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
271
272 JNIEXPORT jobject JNICALL
273 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
274
275 JNIEXPORT jint JNICALL
276 JVM_CountStackFrames(JNIEnv *env, jobject thread);
277
278 JNIEXPORT void JNICALL
279 JVM_Interrupt(JNIEnv *env, jobject thread);
280
281 JNIEXPORT jboolean JNICALL
282 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
283
284 JNIEXPORT jboolean JNICALL
285 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
286
287 JNIEXPORT void JNICALL
288 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
289
290 JNIEXPORT jobjectArray JNICALL
291 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
292
293 /* getStackTrace() and getAllStackTraces() method */
294 JNIEXPORT jobjectArray JNICALL
295 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
296
297 /*
298 * java.lang.SecurityManager
299 */
300 JNIEXPORT jclass JNICALL
301 JVM_CurrentLoadedClass(JNIEnv *env);
302
303 JNIEXPORT jobject JNICALL
304 JVM_CurrentClassLoader(JNIEnv *env);
305
306 JNIEXPORT jobjectArray JNICALL
307 JVM_GetClassContext(JNIEnv *env);
308
309 JNIEXPORT jint JNICALL
310 JVM_ClassDepth(JNIEnv *env, jstring name);
311
312 JNIEXPORT jint JNICALL
313 JVM_ClassLoaderDepth(JNIEnv *env);
314
315 /*
316 * java.lang.Package
317 */
318 JNIEXPORT jstring JNICALL
319 JVM_GetSystemPackage(JNIEnv *env, jstring name);
320
321 JNIEXPORT jobjectArray JNICALL
322 JVM_GetSystemPackages(JNIEnv *env);
323
324 /*
325 * java.io.ObjectInputStream
326 */
327 JNIEXPORT jobject JNICALL
328 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass,
329 jclass initClass);
330
331 JNIEXPORT jobject JNICALL
332 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass,
333 jint length);
334
335 JNIEXPORT jobject JNICALL
336 JVM_LatestUserDefinedLoader(JNIEnv *env);
337
338 /*
339 * This function has been deprecated and should not be considered
340 * part of the specified JVM interface.
341 */
342 JNIEXPORT jclass JNICALL
343 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass,
344 jstring currClassName);
345
346 /*
347 * java.lang.reflect.Array
348 */
349 JNIEXPORT jint JNICALL
350 JVM_GetArrayLength(JNIEnv *env, jobject arr);
351
352 JNIEXPORT jobject JNICALL
353 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
354
355 JNIEXPORT jvalue JNICALL
356 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
357
358 JNIEXPORT void JNICALL
359 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
360
361 JNIEXPORT void JNICALL
362 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
363 unsigned char vCode);
364
365 JNIEXPORT jobject JNICALL
366 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
367
368 JNIEXPORT jobject JNICALL
369 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
370
371 /*
372 * java.lang.Class and java.lang.ClassLoader
373 */
374 /*
375 * Returns the class in which the code invoking the native method
376 * belongs.
377 *
378 * Note that in JDK 1.1, native methods did not create a frame.
379 * In 1.2, they do. Therefore native methods like Class.forName
380 * can no longer look at the current frame for the caller class.
381 */
382 JNIEXPORT jclass JNICALL
383 JVM_GetCallerClass(JNIEnv *env, int n);
384
385 /*
386 * Find primitive classes
387 * utf: class name
388 */
389 JNIEXPORT jclass JNICALL
390 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
391
392 /*
393 * Link the class
394 */
395 JNIEXPORT void JNICALL
396 JVM_ResolveClass(JNIEnv *env, jclass cls);
397
398 /*
399 * Find a class from a given class loader. Throw ClassNotFoundException
400 * or NoClassDefFoundError depending on the value of the last
401 * argument.
402 */
403 JNIEXPORT jclass JNICALL
404 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init,
405 jobject loader, jboolean throwError);
406
407 /*
408 * Find a class from a boot class loader. Returns NULL if class not found.
409 */
410 JNIEXPORT jclass JNICALL
411 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
412
413 /*
414 * Find a class from a given class.
415 */
416 JNIEXPORT jclass JNICALL
417 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
418 jclass from);
419
420 /* Find a loaded class cached by the VM */
421 JNIEXPORT jclass JNICALL
422 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
423
424 /* Define a class */
425 JNIEXPORT jclass JNICALL
426 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
427 jsize len, jobject pd);
428
429 /* Define a class with a source (added in JDK1.5) */
430 JNIEXPORT jclass JNICALL
431 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
432 const jbyte *buf, jsize len, jobject pd,
433 const char *source);
434
435 /* Define a class with a source with conditional verification (added HSX 14)
436 * -Xverify:all will verify anyway, -Xverify:none will not verify,
437 * -Xverify:remote (default) will obey this conditional
438 * i.e. true = should_verify_class
439 */
440 JNIEXPORT jclass JNICALL
441 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name,
442 jobject loader, const jbyte *buf,
443 jsize len, jobject pd, const char *source,
444 jboolean verify);
445
446 /* Define a class with a source (MLVM) */
447 JNIEXPORT jclass JNICALL
448 JVM_DefineClassWithCP(JNIEnv *env, const char *name, jobject loader,
449 const jbyte *buf, jsize len, jobject pd,
450 const char *source,
451 // same args as JVM_DefineClassWithSource to this point
452 jobjectArray constants);
453
454 /*
455 * Reflection support functions
456 */
457
458 JNIEXPORT jstring JNICALL
459 JVM_GetClassName(JNIEnv *env, jclass cls);
460
461 JNIEXPORT jobjectArray JNICALL
462 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
463
464 JNIEXPORT jobject JNICALL
465 JVM_GetClassLoader(JNIEnv *env, jclass cls);
466
467 JNIEXPORT jboolean JNICALL
468 JVM_IsInterface(JNIEnv *env, jclass cls);
469
470 JNIEXPORT jobjectArray JNICALL
471 JVM_GetClassSigners(JNIEnv *env, jclass cls);
472
473 JNIEXPORT void JNICALL
474 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
475
476 JNIEXPORT jobject JNICALL
477 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
478
479 JNIEXPORT void JNICALL
480 JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain);
481
482 JNIEXPORT jboolean JNICALL
483 JVM_IsArrayClass(JNIEnv *env, jclass cls);
484
485 JNIEXPORT jboolean JNICALL
486 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
487
488 JNIEXPORT jclass JNICALL
489 JVM_GetComponentType(JNIEnv *env, jclass cls);
490
491 JNIEXPORT jint JNICALL
492 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
493
494 JNIEXPORT jobjectArray JNICALL
495 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
496
497 JNIEXPORT jclass JNICALL
498 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
499
500 /* Generics support (JDK 1.5) */
501 JNIEXPORT jstring JNICALL
502 JVM_GetClassSignature(JNIEnv *env, jclass cls);
503
504 /* Annotations support (JDK 1.5) */
505 JNIEXPORT jbyteArray JNICALL
506 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
507
508 /* Annotations support (JDK 1.6) */
509
510 // field is a handle to a java.lang.reflect.Field object
511 JNIEXPORT jbyteArray JNICALL
512 JVM_GetFieldAnnotations(JNIEnv *env, jobject field);
513
514 // method is a handle to a java.lang.reflect.Method object
515 JNIEXPORT jbyteArray JNICALL
516 JVM_GetMethodAnnotations(JNIEnv *env, jobject method);
517
518 // method is a handle to a java.lang.reflect.Method object
519 JNIEXPORT jbyteArray JNICALL
520 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method);
521
522 // method is a handle to a java.lang.reflect.Method object
523 JNIEXPORT jbyteArray JNICALL
524 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method);
525
526
527 /*
528 * New (JDK 1.4) reflection implementation
529 */
530
531 JNIEXPORT jobjectArray JNICALL
532 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
533
534 JNIEXPORT jobjectArray JNICALL
535 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
536
537 JNIEXPORT jobjectArray JNICALL
538 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
539
540 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
541 This returns the access flags for the class as specified in the
542 class file rather than searching the InnerClasses attribute (if
543 present) to find the source-level access flags. Only the values of
544 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
545 valid. */
546 JNIEXPORT jint JNICALL
547 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
548
549 /*
550 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
551 */
552
553 JNIEXPORT jobject JNICALL
554 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
555
556 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
557 (JNIEnv *env, jobject unused, jobject jcpool);
558
559 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
560 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
561
562 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
563 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
564
565 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
566 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
567
568 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
569 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
570
571 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
572 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
573
574 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
575 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
576
577 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
578 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
579
580 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
581 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
582
583 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
584 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
585
586 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
587 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
588
589 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
590 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
591
592 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
593 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
594
595 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
596 (JNIEnv *env, jobject unused, jobject jcpool, jint index);
597
598 /*
599 * java.security.*
600 */
601
602 JNIEXPORT jobject JNICALL
603 JVM_DoPrivileged(JNIEnv *env, jclass cls,
604 jobject action, jobject context, jboolean wrapException);
605
606 JNIEXPORT jobject JNICALL
607 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
608
609 JNIEXPORT jobject JNICALL
610 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
611
612 /*
613 * Signal support, used to implement the shutdown sequence. Every VM must
614 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
615 * (^C) and the latter for external termination (kill, system shutdown, etc.).
616 * Other platform-dependent signal values may also be supported.
617 */
618
619 JNIEXPORT void * JNICALL
620 JVM_RegisterSignal(jint sig, void *handler);
621
622 JNIEXPORT jboolean JNICALL
623 JVM_RaiseSignal(jint sig);
624
625 JNIEXPORT jint JNICALL
626 JVM_FindSignal(const char *name);
627
628 /*
629 * Retrieve the assertion directives for the specified class.
630 */
631 JNIEXPORT jboolean JNICALL
632 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
633
634 /*
635 * Retrieve the assertion directives from the VM.
636 */
637 JNIEXPORT jobject JNICALL
638 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
639
640 /*
641 * sun.misc.AtomicLong
642 */
643 JNIEXPORT jboolean JNICALL
644 JVM_SupportsCX8(void);
645
646 JNIEXPORT jboolean JNICALL
647 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal);
648
649 /*
650 * com.sun.dtrace.jsdt support
651 */
652
653 #define JVM_TRACING_DTRACE_VERSION 1
654
655 /*
656 * Structure to pass one probe description to JVM.
657 *
658 * The VM will overwrite the definition of the referenced method with
659 * code that will fire the probe.
660 */
661 typedef struct {
662 jmethodID method;
663 jstring function;
664 jstring name;
665 void* reserved[4]; // for future use
666 } JVM_DTraceProbe;
667
668 /**
669 * Encapsulates the stability ratings for a DTrace provider field
670 */
671 typedef struct {
672 jint nameStability;
673 jint dataStability;
674 jint dependencyClass;
675 } JVM_DTraceInterfaceAttributes;
676
677 /*
678 * Structure to pass one provider description to JVM
679 */
680 typedef struct {
681 jstring name;
682 JVM_DTraceProbe* probes;
683 jint probe_count;
684 JVM_DTraceInterfaceAttributes providerAttributes;
685 JVM_DTraceInterfaceAttributes moduleAttributes;
686 JVM_DTraceInterfaceAttributes functionAttributes;
687 JVM_DTraceInterfaceAttributes nameAttributes;
688 JVM_DTraceInterfaceAttributes argsAttributes;
689 void* reserved[4]; // for future use
690 } JVM_DTraceProvider;
691
692 /*
693 * Get the version number the JVM was built with
694 */
695 JNIEXPORT jint JNICALL
696 JVM_DTraceGetVersion(JNIEnv* env);
697
698 /*
699 * Register new probe with given signature, return global handle
700 *
701 * The version passed in is the version that the library code was
702 * built with.
703 */
704 JNIEXPORT jlong JNICALL
705 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
706 jint providers_count, JVM_DTraceProvider* providers);
707
708 /*
709 * Check JSDT probe
710 */
711 JNIEXPORT jboolean JNICALL
712 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
713
714 /*
715 * Destroy custom DOF
716 */
717 JNIEXPORT void JNICALL
718 JVM_DTraceDispose(JNIEnv* env, jlong handle);
719
720 /*
721 * Check to see if DTrace is supported by OS
722 */
723 JNIEXPORT jboolean JNICALL
724 JVM_DTraceIsSupported(JNIEnv* env);
725
726 /*************************************************************************
727 PART 2: Support for the Verifier and Class File Format Checker
728 ************************************************************************/
729 /*
730 * Return the class name in UTF format. The result is valid
731 * until JVM_ReleaseUTf is called.
732 *
733 * The caller must treat the string as a constant and not modify it
734 * in any way.
735 */
736 JNIEXPORT const char * JNICALL
737 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
738
739 /*
740 * Returns the constant pool types in the buffer provided by "types."
741 */
742 JNIEXPORT void JNICALL
743 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
744
745 /*
746 * Returns the number of Constant Pool entries.
747 */
748 JNIEXPORT jint JNICALL
749 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
750
751 /*
752 * Returns the number of *declared* fields or methods.
753 */
754 JNIEXPORT jint JNICALL
755 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
756
757 JNIEXPORT jint JNICALL
758 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
759
760 /*
761 * Returns the CP indexes of exceptions raised by a given method.
762 * Places the result in the given buffer.
763 *
764 * The method is identified by method_index.
765 */
766 JNIEXPORT void JNICALL
767 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
768 unsigned short *exceptions);
769 /*
770 * Returns the number of exceptions raised by a given method.
771 * The method is identified by method_index.
772 */
773 JNIEXPORT jint JNICALL
774 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
775
776 /*
777 * Returns the byte code sequence of a given method.
778 * Places the result in the given buffer.
779 *
780 * The method is identified by method_index.
781 */
782 JNIEXPORT void JNICALL
783 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
784 unsigned char *code);
785
786 /*
787 * Returns the length of the byte code sequence of a given method.
788 * The method is identified by method_index.
789 */
790 JNIEXPORT jint JNICALL
791 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
792
793 /*
794 * A structure used to a capture exception table entry in a Java method.
795 */
796 typedef struct {
797 jint start_pc;
798 jint end_pc;
799 jint handler_pc;
800 jint catchType;
801 } JVM_ExceptionTableEntryType;
802
803 /*
804 * Returns the exception table entry at entry_index of a given method.
805 * Places the result in the given buffer.
806 *
807 * The method is identified by method_index.
808 */
809 JNIEXPORT void JNICALL
810 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
811 jint entry_index,
812 JVM_ExceptionTableEntryType *entry);
813
814 /*
815 * Returns the length of the exception table of a given method.
816 * The method is identified by method_index.
817 */
818 JNIEXPORT jint JNICALL
819 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
820
821 /*
822 * Returns the modifiers of a given field.
823 * The field is identified by field_index.
824 */
825 JNIEXPORT jint JNICALL
826 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
827
828 /*
829 * Returns the modifiers of a given method.
830 * The method is identified by method_index.
831 */
832 JNIEXPORT jint JNICALL
833 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
834
835 /*
836 * Returns the number of local variables of a given method.
837 * The method is identified by method_index.
838 */
839 JNIEXPORT jint JNICALL
840 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
841
842 /*
843 * Returns the number of arguments (including this pointer) of a given method.
844 * The method is identified by method_index.
845 */
846 JNIEXPORT jint JNICALL
847 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
848
849 /*
850 * Returns the maximum amount of stack (in words) used by a given method.
851 * The method is identified by method_index.
852 */
853 JNIEXPORT jint JNICALL
854 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
855
856 /*
857 * Is a given method a constructor.
858 * The method is identified by method_index.
859 */
860 JNIEXPORT jboolean JNICALL
861 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
862
863 /*
864 * Returns the name of a given method in UTF format.
865 * The result remains valid until JVM_ReleaseUTF is called.
866 *
867 * The caller must treat the string as a constant and not modify it
868 * in any way.
869 */
870 JNIEXPORT const char * JNICALL
871 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
872
873 /*
874 * Returns the signature of a given method in UTF format.
875 * The result remains valid until JVM_ReleaseUTF is called.
876 *
877 * The caller must treat the string as a constant and not modify it
878 * in any way.
879 */
880 JNIEXPORT const char * JNICALL
881 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
882
883 /*
884 * Returns the name of the field refered to at a given constant pool
885 * index.
886 *
887 * The result is in UTF format and remains valid until JVM_ReleaseUTF
888 * is called.
889 *
890 * The caller must treat the string as a constant and not modify it
891 * in any way.
892 */
893 JNIEXPORT const char * JNICALL
894 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
895
896 /*
897 * Returns the name of the method refered to at a given constant pool
898 * index.
899 *
900 * The result is in UTF format and remains valid until JVM_ReleaseUTF
901 * is called.
902 *
903 * The caller must treat the string as a constant and not modify it
904 * in any way.
905 */
906 JNIEXPORT const char * JNICALL
907 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
908
909 /*
910 * Returns the signature of the method refered to at a given constant pool
911 * index.
912 *
913 * The result is in UTF format and remains valid until JVM_ReleaseUTF
914 * is called.
915 *
916 * The caller must treat the string as a constant and not modify it
917 * in any way.
918 */
919 JNIEXPORT const char * JNICALL
920 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
921
922 /*
923 * Returns the signature of the field refered to at a given constant pool
924 * index.
925 *
926 * The result is in UTF format and remains valid until JVM_ReleaseUTF
927 * is called.
928 *
929 * The caller must treat the string as a constant and not modify it
930 * in any way.
931 */
932 JNIEXPORT const char * JNICALL
933 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
934
935 /*
936 * Returns the class name refered to at a given constant pool index.
937 *
938 * The result is in UTF format and remains valid until JVM_ReleaseUTF
939 * is called.
940 *
941 * The caller must treat the string as a constant and not modify it
942 * in any way.
943 */
944 JNIEXPORT const char * JNICALL
945 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
946
947 /*
948 * Returns the class name refered to at a given constant pool index.
949 *
950 * The constant pool entry must refer to a CONSTANT_Fieldref.
951 *
952 * The result is in UTF format and remains valid until JVM_ReleaseUTF
953 * is called.
954 *
955 * The caller must treat the string as a constant and not modify it
956 * in any way.
957 */
958 JNIEXPORT const char * JNICALL
959 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
960
961 /*
962 * Returns the class name refered to at a given constant pool index.
963 *
964 * The constant pool entry must refer to CONSTANT_Methodref or
965 * CONSTANT_InterfaceMethodref.
966 *
967 * The result is in UTF format and remains valid until JVM_ReleaseUTF
968 * is called.
969 *
970 * The caller must treat the string as a constant and not modify it
971 * in any way.
972 */
973 JNIEXPORT const char * JNICALL
974 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
975
976 /*
977 * Returns the modifiers of a field in calledClass. The field is
978 * referred to in class cb at constant pool entry index.
979 *
980 * The caller must treat the string as a constant and not modify it
981 * in any way.
982 *
983 * Returns -1 if the field does not exist in calledClass.
984 */
985 JNIEXPORT jint JNICALL
986 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
987
988 /*
989 * Returns the modifiers of a method in calledClass. The method is
990 * referred to in class cb at constant pool entry index.
991 *
992 * Returns -1 if the method does not exist in calledClass.
993 */
994 JNIEXPORT jint JNICALL
995 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
996
997 /*
998 * Releases the UTF string obtained from the VM.
999 */
1000 JNIEXPORT void JNICALL
1001 JVM_ReleaseUTF(const char *utf);
1002
1003 /*
1004 * Compare if two classes are in the same package.
1005 */
1006 JNIEXPORT jboolean JNICALL
1007 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1008
1009 /* Constants in class files */
1010
1011 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */
1012 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */
1013 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */
1014 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */
1015 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */
1016 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */
1017 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */
1018 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */
1019 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */
1020 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */
1021 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */
1022 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */
1023 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */
1024 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */
1025 #define JVM_ACC_STRICT 0x0800 /* strict floating point */
1026 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */
1027 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */
1028 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */
1029
1030 #define JVM_ACC_PUBLIC_BIT 0
1031 #define JVM_ACC_PRIVATE_BIT 1
1032 #define JVM_ACC_PROTECTED_BIT 2
1033 #define JVM_ACC_STATIC_BIT 3
1034 #define JVM_ACC_FINAL_BIT 4
1035 #define JVM_ACC_SYNCHRONIZED_BIT 5
1036 #define JVM_ACC_SUPER_BIT 5
1037 #define JVM_ACC_VOLATILE_BIT 6
1038 #define JVM_ACC_BRIDGE_BIT 6
1039 #define JVM_ACC_TRANSIENT_BIT 7
1040 #define JVM_ACC_VARARGS_BIT 7
1041 #define JVM_ACC_NATIVE_BIT 8
1042 #define JVM_ACC_INTERFACE_BIT 9
1043 #define JVM_ACC_ABSTRACT_BIT 10
1044 #define JVM_ACC_STRICT_BIT 11
1045 #define JVM_ACC_SYNTHETIC_BIT 12
1046 #define JVM_ACC_ANNOTATION_BIT 13
1047 #define JVM_ACC_ENUM_BIT 14
1048
1049 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
1050 enum {
1051 JVM_CONSTANT_Utf8 = 1,
1052 JVM_CONSTANT_Unicode, /* unused */
1053 JVM_CONSTANT_Integer,
1054 JVM_CONSTANT_Float,
1055 JVM_CONSTANT_Long,
1056 JVM_CONSTANT_Double,
1057 JVM_CONSTANT_Class,
1058 JVM_CONSTANT_String,
1059 JVM_CONSTANT_Fieldref,
1060 JVM_CONSTANT_Methodref,
1061 JVM_CONSTANT_InterfaceMethodref,
1062 JVM_CONSTANT_NameAndType,
1063 JVM_CONSTANT_MethodHandle = 15, // JSR 292
1064 JVM_CONSTANT_MethodType = 16, // JSR 292
1065 //JVM_CONSTANT_(unused) = 17, // JSR 292 early drafts only
1066 JVM_CONSTANT_InvokeDynamic = 18, // JSR 292
1067 JVM_CONSTANT_ExternalMax = 18 // Last tag found in classfiles
1068 };
1069
1070 /* JVM_CONSTANT_MethodHandle subtypes */
1071 enum {
1072 JVM_REF_getField = 1,
1073 JVM_REF_getStatic = 2,
1074 JVM_REF_putField = 3,
1075 JVM_REF_putStatic = 4,
1076 JVM_REF_invokeVirtual = 5,
1077 JVM_REF_invokeStatic = 6,
1078 JVM_REF_invokeSpecial = 7,
1079 JVM_REF_newInvokeSpecial = 8,
1080 JVM_REF_invokeInterface = 9
1081 };
1082
1083 /* Used in the newarray instruction. */
1084
1085 #define JVM_T_BOOLEAN 4
1086 #define JVM_T_CHAR 5
1087 #define JVM_T_FLOAT 6
1088 #define JVM_T_DOUBLE 7
1089 #define JVM_T_BYTE 8
1090 #define JVM_T_SHORT 9
1091 #define JVM_T_INT 10
1092 #define JVM_T_LONG 11
1093
1094 /* JVM method signatures */
1095
1096 #define JVM_SIGNATURE_ARRAY '['
1097 #define JVM_SIGNATURE_BYTE 'B'
1098 #define JVM_SIGNATURE_CHAR 'C'
1099 #define JVM_SIGNATURE_CLASS 'L'
1100 #define JVM_SIGNATURE_ENDCLASS ';'
1101 #define JVM_SIGNATURE_ENUM 'E'
1102 #define JVM_SIGNATURE_FLOAT 'F'
1103 #define JVM_SIGNATURE_DOUBLE 'D'
1104 #define JVM_SIGNATURE_FUNC '('
1105 #define JVM_SIGNATURE_ENDFUNC ')'
1106 #define JVM_SIGNATURE_INT 'I'
1107 #define JVM_SIGNATURE_LONG 'J'
1108 #define JVM_SIGNATURE_SHORT 'S'
1109 #define JVM_SIGNATURE_VOID 'V'
1110 #define JVM_SIGNATURE_BOOLEAN 'Z'
1111
1112 /*
1113 * A function defined by the byte-code verifier and called by the VM.
1114 * This is not a function implemented in the VM.
1115 *
1116 * Returns JNI_FALSE if verification fails. A detailed error message
1117 * will be places in msg_buf, whose length is specified by buf_len.
1118 */
1119 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1120 jclass cb,
1121 char * msg_buf,
1122 jint buf_len);
1123
1124
1125 /*
1126 * Support for a VM-independent class format checker.
1127 */
1128 typedef struct {
1129 unsigned long code; /* byte code */
1130 unsigned long excs; /* exceptions */
1131 unsigned long etab; /* catch table */
1132 unsigned long lnum; /* line number */
1133 unsigned long lvar; /* local vars */
1134 } method_size_info;
1135
1136 typedef struct {
1137 unsigned int constants; /* constant pool */
1138 unsigned int fields;
1139 unsigned int methods;
1140 unsigned int interfaces;
1141 unsigned int fields2; /* number of static 2-word fields */
1142 unsigned int innerclasses; /* # of records in InnerClasses attr */
1143
1144 method_size_info clinit; /* memory used in clinit */
1145 method_size_info main; /* used everywhere else */
1146 } class_size_info;
1147
1148 /*
1149 * Functions defined in libjava.so to perform string conversions.
1150 *
1151 */
1152
1153 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1154
1155 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1156
1157 /* This is the function defined in libjava.so that performs class
1158 * format checks. This functions fills in size information about
1159 * the class file and returns:
1160 *
1161 * 0: good
1162 * -1: out of memory
1163 * -2: bad format
1164 * -3: unsupported version
1165 * -4: bad class name
1166 */
1167
1168 typedef jint (*check_format_fn_t)(char *class_name,
1169 unsigned char *data,
1170 unsigned int data_size,
1171 class_size_info *class_size,
1172 char *message_buffer,
1173 jint buffer_length,
1174 jboolean measure_only,
1175 jboolean check_relaxed);
1176
1177 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1178 JVM_ACC_FINAL | \
1179 JVM_ACC_SUPER | \
1180 JVM_ACC_INTERFACE | \
1181 JVM_ACC_ABSTRACT | \
1182 JVM_ACC_ANNOTATION | \
1183 JVM_ACC_ENUM | \
1184 JVM_ACC_SYNTHETIC)
1185
1186 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1187 JVM_ACC_PRIVATE | \
1188 JVM_ACC_PROTECTED | \
1189 JVM_ACC_STATIC | \
1190 JVM_ACC_FINAL | \
1191 JVM_ACC_VOLATILE | \
1192 JVM_ACC_TRANSIENT | \
1193 JVM_ACC_ENUM | \
1194 JVM_ACC_SYNTHETIC)
1195
1196 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1197 JVM_ACC_PRIVATE | \
1198 JVM_ACC_PROTECTED | \
1199 JVM_ACC_STATIC | \
1200 JVM_ACC_FINAL | \
1201 JVM_ACC_SYNCHRONIZED | \
1202 JVM_ACC_BRIDGE | \
1203 JVM_ACC_VARARGS | \
1204 JVM_ACC_NATIVE | \
1205 JVM_ACC_ABSTRACT | \
1206 JVM_ACC_STRICT | \
1207 JVM_ACC_SYNTHETIC)
1208
1209 /*
1210 * This is the function defined in libjava.so to perform path
1211 * canonicalization. VM call this function before opening jar files
1212 * to load system classes.
1213 *
1214 */
1215
1216 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1217
1218 /*************************************************************************
1219 PART 3: I/O and Network Support
1220 ************************************************************************/
1221
1222 /* Note that the JVM IO functions are expected to return JVM_IO_ERR
1223 * when there is any kind of error. The caller can then use the
1224 * platform specific support (e.g., errno) to get the detailed
1225 * error info. The JVM_GetLastErrorString procedure may also be used
1226 * to obtain a descriptive error string.
1227 */
1228 #define JVM_IO_ERR (-1)
1229
1230 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO
1231 * operation has been disrupted by Thread.interrupt. There are a
1232 * number of technical difficulties related to interruptible IO that
1233 * need to be solved. For example, most existing programs do not handle
1234 * InterruptedIOExceptions specially, they simply treat those as any
1235 * IOExceptions, which typically indicate fatal errors.
1236 *
1237 * There are also two modes of operation for interruptible IO. In the
1238 * resumption mode, an interrupted IO operation is guaranteed not to
1239 * have any side-effects, and can be restarted. In the termination mode,
1240 * an interrupted IO operation corrupts the underlying IO stream, so
1241 * that the only reasonable operation on an interrupted stream is to
1242 * close that stream. The resumption mode seems to be impossible to
1243 * implement on Win32 and Solaris. Implementing the termination mode is
1244 * easier, but it's not clear that's the right semantics.
1245 *
1246 * Interruptible IO is not supported on Win32.It can be enabled/disabled
1247 * using a compile-time flag on Solaris. Third-party JVM ports do not
1248 * need to implement interruptible IO.
1249 */
1250 #define JVM_IO_INTR (-2)
1251
1252 /* Write a string into the given buffer, in the platform's local encoding,
1253 * that describes the most recent system-level error to occur in this thread.
1254 * Return the length of the string or zero if no error occurred.
1255 */
1256 JNIEXPORT jint JNICALL
1257 JVM_GetLastErrorString(char *buf, int len);
1258
1259 /*
1260 * Convert a pathname into native format. This function does syntactic
1261 * cleanup, such as removing redundant separator characters. It modifies
1262 * the given pathname string in place.
1263 */
1264 JNIEXPORT char * JNICALL
1265 JVM_NativePath(char *);
1266
1267 /*
1268 * JVM I/O error codes
1269 */
1270 #define JVM_EEXIST -100
1271
1272 /*
1273 * Open a file descriptor. This function returns a negative error code
1274 * on error, and a non-negative integer that is the file descriptor on
1275 * success.
1276 */
1277 JNIEXPORT jint JNICALL
1278 JVM_Open(const char *fname, jint flags, jint mode);
1279
1280 /*
1281 * Close a file descriptor. This function returns -1 on error, and 0
1282 * on success.
1283 *
1284 * fd the file descriptor to close.
1285 */
1286 JNIEXPORT jint JNICALL
1287 JVM_Close(jint fd);
1288
1289 /*
1290 * Read data from a file decriptor into a char array.
1291 *
1292 * fd the file descriptor to read from.
1293 * buf the buffer where to put the read data.
1294 * nbytes the number of bytes to read.
1295 *
1296 * This function returns -1 on error, and 0 on success.
1297 */
1298 JNIEXPORT jint JNICALL
1299 JVM_Read(jint fd, char *buf, jint nbytes);
1300
1301 /*
1302 * Write data from a char array to a file decriptor.
1303 *
1304 * fd the file descriptor to read from.
1305 * buf the buffer from which to fetch the data.
1306 * nbytes the number of bytes to write.
1307 *
1308 * This function returns -1 on error, and 0 on success.
1309 */
1310 JNIEXPORT jint JNICALL
1311 JVM_Write(jint fd, char *buf, jint nbytes);
1312
1313 /*
1314 * Returns the number of bytes available for reading from a given file
1315 * descriptor
1316 */
1317 JNIEXPORT jint JNICALL
1318 JVM_Available(jint fd, jlong *pbytes);
1319
1320 /*
1321 * Move the file descriptor pointer from whence by offset.
1322 *
1323 * fd the file descriptor to move.
1324 * offset the number of bytes to move it by.
1325 * whence the start from where to move it.
1326 *
1327 * This function returns the resulting pointer location.
1328 */
1329 JNIEXPORT jlong JNICALL
1330 JVM_Lseek(jint fd, jlong offset, jint whence);
1331
1332 /*
1333 * Set the length of the file associated with the given descriptor to the given
1334 * length. If the new length is longer than the current length then the file
1335 * is extended; the contents of the extended portion are not defined. The
1336 * value of the file pointer is undefined after this procedure returns.
1337 */
1338 JNIEXPORT jint JNICALL
1339 JVM_SetLength(jint fd, jlong length);
1340
1341 /*
1342 * Synchronize the file descriptor's in memory state with that of the
1343 * physical device. Return of -1 is an error, 0 is OK.
1344 */
1345 JNIEXPORT jint JNICALL
1346 JVM_Sync(jint fd);
1347
1348 /*
1349 * Networking library support
1350 */
1351
1352 JNIEXPORT jint JNICALL
1353 JVM_InitializeSocketLibrary(void);
1354
1355 struct sockaddr;
1356
1357 JNIEXPORT jint JNICALL
1358 JVM_Socket(jint domain, jint type, jint protocol);
1359
1360 JNIEXPORT jint JNICALL
1361 JVM_SocketClose(jint fd);
1362
1363 JNIEXPORT jint JNICALL
1364 JVM_SocketShutdown(jint fd, jint howto);
1365
1366 JNIEXPORT jint JNICALL
1367 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags);
1368
1369 JNIEXPORT jint JNICALL
1370 JVM_Send(jint fd, char *buf, jint nBytes, jint flags);
1371
1372 JNIEXPORT jint JNICALL
1373 JVM_Timeout(int fd, long timeout);
1374
1375 JNIEXPORT jint JNICALL
1376 JVM_Listen(jint fd, jint count);
1377
1378 JNIEXPORT jint JNICALL
1379 JVM_Connect(jint fd, struct sockaddr *him, jint len);
1380
1381 JNIEXPORT jint JNICALL
1382 JVM_Bind(jint fd, struct sockaddr *him, jint len);
1383
1384 JNIEXPORT jint JNICALL
1385 JVM_Accept(jint fd, struct sockaddr *him, jint *len);
1386
1387 JNIEXPORT jint JNICALL
1388 JVM_RecvFrom(jint fd, char *buf, int nBytes,
1389 int flags, struct sockaddr *from, int *fromlen);
1390
1391 JNIEXPORT jint JNICALL
1392 JVM_SendTo(jint fd, char *buf, int len,
1393 int flags, struct sockaddr *to, int tolen);
1394
1395 JNIEXPORT jint JNICALL
1396 JVM_SocketAvailable(jint fd, jint *result);
1397
1398
1399 JNIEXPORT jint JNICALL
1400 JVM_GetSockName(jint fd, struct sockaddr *him, int *len);
1401
1402 JNIEXPORT jint JNICALL
1403 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen);
1404
1405 JNIEXPORT jint JNICALL
1406 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen);
1407
1408 JNIEXPORT int JNICALL
1409 JVM_GetHostName(char* name, int namelen);
1410
1411 /*
1412 * The standard printing functions supported by the Java VM. (Should they
1413 * be renamed to JVM_* in the future?
1414 */
1415
1416 /*
1417 * BE CAREFUL! The following functions do not implement the
1418 * full feature set of standard C printf formats.
1419 */
1420 JNIEXPORT int
1421 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1422
1423 JNIEXPORT int
1424 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1425
1426 JNIEXPORT int
1427 jio_fprintf(FILE *, const char *fmt, ...);
1428
1429 JNIEXPORT int
1430 jio_vfprintf(FILE *, const char *fmt, va_list args);
1431
1432
1433 JNIEXPORT void * JNICALL
1434 JVM_RawMonitorCreate(void);
1435
1436 JNIEXPORT void JNICALL
1437 JVM_RawMonitorDestroy(void *mon);
1438
1439 JNIEXPORT jint JNICALL
1440 JVM_RawMonitorEnter(void *mon);
1441
1442 JNIEXPORT void JNICALL
1443 JVM_RawMonitorExit(void *mon);
1444
1445
1446 #ifdef SUPPORT_OLD_REFLECTION
1447
1448 /*
1449 * Support for old native code-based (pre-JDK 1.4) reflection implementation.
1450 * Disabled by default in the product build.
1451 *
1452 * See reflection.hpp for information on SUPPORT_OLD_REFLECTION
1453 */
1454
1455 /*
1456 * reflecting fields and methods.
1457 * which: 0 --- MEMBER_PUBLIC
1458 * 1 --- MEMBER_DECLARED
1459 * NOTE: absent in product build by default
1460 */
1461
1462 JNIEXPORT jobjectArray JNICALL
1463 JVM_GetClassFields(JNIEnv *env, jclass cls, jint which);
1464
1465 JNIEXPORT jobjectArray JNICALL
1466 JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which);
1467
1468 JNIEXPORT jobjectArray JNICALL
1469 JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which);
1470
1471 JNIEXPORT jobject JNICALL
1472 JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which);
1473
1474 JNIEXPORT jobject JNICALL
1475 JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types,
1476 jint which);
1477 JNIEXPORT jobject JNICALL
1478 JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types,
1479 jint which);
1480
1481 /*
1482 * Implements Class.newInstance
1483 */
1484 JNIEXPORT jobject JNICALL
1485 JVM_NewInstance(JNIEnv *env, jclass cls);
1486
1487 /*
1488 * java.lang.reflect.Field
1489 */
1490 JNIEXPORT jobject JNICALL
1491 JVM_GetField(JNIEnv *env, jobject field, jobject obj);
1492
1493 JNIEXPORT jvalue JNICALL
1494 JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj,
1495 unsigned char wCode);
1496
1497 JNIEXPORT void JNICALL
1498 JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val);
1499
1500 JNIEXPORT void JNICALL
1501 JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v,
1502 unsigned char vCode);
1503
1504 /*
1505 * java.lang.reflect.Method
1506 */
1507 JNIEXPORT jobject JNICALL
1508 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1509
1510 /*
1511 * java.lang.reflect.Constructor
1512 */
1513 JNIEXPORT jobject JNICALL
1514 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1515
1516 #endif /* SUPPORT_OLD_REFLECTION */
1517
1518 /*
1519 * java.lang.management support
1520 */
1521 JNIEXPORT void* JNICALL
1522 JVM_GetManagement(jint version);
1523
1524 /*
1525 * com.sun.tools.attach.VirtualMachine support
1526 *
1527 * Initialize the agent properties with the properties maintained in the VM.
1528 */
1529 JNIEXPORT jobject JNICALL
1530 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1531
1532 /* Generics reflection support.
1533 *
1534 * Returns information about the given class's EnclosingMethod
1535 * attribute, if present, or null if the class had no enclosing
1536 * method.
1537 *
1538 * If non-null, the returned array contains three elements. Element 0
1539 * is the java.lang.Class of which the enclosing method is a member,
1540 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1541 * method's name and descriptor, respectively.
1542 */
1543 JNIEXPORT jobjectArray JNICALL
1544 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1545
1546 /*
1547 * Java thread state support
1548 */
1549 enum {
1550 JAVA_THREAD_STATE_NEW = 0,
1551 JAVA_THREAD_STATE_RUNNABLE = 1,
1552 JAVA_THREAD_STATE_BLOCKED = 2,
1553 JAVA_THREAD_STATE_WAITING = 3,
1554 JAVA_THREAD_STATE_TIMED_WAITING = 4,
1555 JAVA_THREAD_STATE_TERMINATED = 5,
1556 JAVA_THREAD_STATE_COUNT = 6
1557 };
1558
1559 /*
1560 * Returns an array of the threadStatus values representing the
1561 * given Java thread state. Returns NULL if the VM version is
1562 * incompatible with the JDK or doesn't support the given
1563 * Java thread state.
1564 */
1565 JNIEXPORT jintArray JNICALL
1566 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState);
1567
1568 /*
1569 * Returns an array of the substate names representing the
1570 * given Java thread state. Returns NULL if the VM version is
1571 * incompatible with the JDK or the VM doesn't support
1572 * the given Java thread state.
1573 * values must be the jintArray returned from JVM_GetThreadStateValues
1574 * and javaThreadState.
1575 */
1576 JNIEXPORT jobjectArray JNICALL
1577 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values);
1578
1579 /* =========================================================================
1580 * The following defines a private JVM interface that the JDK can query
1581 * for the JVM version and capabilities. sun.misc.Version defines
1582 * the methods for getting the VM version and its capabilities.
1583 *
1584 * When a new bit is added, the following should be updated to provide
1585 * access to the new capability:
1586 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1587 * SDK: Version class
1588 *
1589 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1590 * JVM to query for the JDK version and capabilities.
1591 *
1592 * When a new bit is added, the following should be updated to provide
1593 * access to the new capability:
1594 * HS: JDK_Version class
1595 * SDK: JDK_GetVersionInfo0
1596 *
1597 * ==========================================================================
1598 */
1599 typedef struct {
1600 /* HotSpot Express VM version string:
1601 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>]
1602 */
1603 unsigned int jvm_version; /* Consists of major.minor.0.build */
1604 unsigned int update_version : 8; /* 0 in HotSpot Express VM */
1605 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */
1606 unsigned int reserved1 : 16;
1607 unsigned int reserved2;
1608
1609 /* The following bits represents JVM supports that JDK has dependency on.
1610 * JDK can use these bits to determine which JVM version
1611 * and support it has to maintain runtime compatibility.
1612 *
1613 * When a new bit is added in a minor or update release, make sure
1614 * the new bit is also added in the main/baseline.
1615 */
1616 unsigned int is_attachable : 1;
1617 unsigned int is_kernel_jvm : 1;
1618 unsigned int : 30;
1619 unsigned int : 32;
1620 unsigned int : 32;
1621 } jvm_version_info;
1622
1623 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1624 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1625 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp).
1626 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1627 /* Build number is available in all HotSpot Express VM builds.
1628 * It is defined in make/hotspot_version file.
1629 */
1630 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1631
1632 JNIEXPORT void JNICALL
1633 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1634
1635 typedef struct {
1636 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
1637 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */
1638 /* and build number (xx) */
1639 unsigned int update_version : 8; /* Update release version (uu) */
1640 unsigned int special_update_version : 8; /* Special update release version (c)*/
1641 unsigned int reserved1 : 16;
1642 unsigned int reserved2;
1643
1644 /* The following bits represents new JDK supports that VM has dependency on.
1645 * VM implementation can use these bits to determine which JDK version
1646 * and support it has to maintain runtime compatibility.
1647 *
1648 * When a new bit is added in a minor or update release, make sure
1649 * the new bit is also added in the main/baseline.
1650 */
1651 unsigned int thread_park_blocker : 1;
1652 unsigned int post_vm_init_hook_enabled : 1;
1653 unsigned int pending_list_uses_discovered_field : 1;
1654 unsigned int : 29;
1655 unsigned int : 32;
1656 unsigned int : 32;
1657 } jdk_version_info;
1658
1659 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1660 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1661 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1662
1663 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
1664 * It will be zero for internal builds.
1665 */
1666 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1667
1668 /*
1669 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1670 * that is dynamically looked up by JVM.
1671 */
1672 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1673
1674 /*
1675 * This structure is used by the launcher to get the default thread
1676 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1677 * version of 1.1. As it is not supported otherwise, it has been removed
1678 * from jni.h
1679 */
1680 typedef struct JDK1_1InitArgs {
1681 jint version;
1682
1683 char **properties;
1684 jint checkSource;
1685 jint nativeStackSize;
1686 jint javaStackSize;
1687 jint minHeapSize;
1688 jint maxHeapSize;
1689 jint verifyMode;
1690 char *classpath;
1691
1692 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1693 void (JNICALL *exit)(jint code);
1694 void (JNICALL *abort)(void);
1695
1696 jint enableClassGC;
1697 jint enableVerboseGC;
1698 jint disableAsyncGC;
1699 jint verbose;
1700 jboolean debugging;
1701 jint debugPort;
1702 } JDK1_1InitArgs;
1703
1704 #ifdef __cplusplus
1705 } /* extern "C" */
1706 #endif /* __cplusplus */
1707
1708 #endif /* !_JAVASOFT_JVM_H_ */
1709
1710 #endif // SHARE_VM_PRIMS_JVM_H