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src/share/vm/prims/jvm.h@eef07cd490d4
src/share/vm/prims/jvm.h
Wed, 03 Jul 2019 20:42:37 +0800
- author
- aoqi
- date
- Wed, 03 Jul 2019 20:42:37 +0800
- changeset 9637
- eef07cd490d4
- parent 9572
- 624a0741915c
- child 9931
- fd44df5e3bc3
- permissions
- -rw-r--r--
Merge
1 /*
2 * Copyright (c) 1997, 2018, 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 */
25 #ifndef SHARE_VM_PRIMS_JVM_H
26 #define SHARE_VM_PRIMS_JVM_H
28 #include "prims/jni.h"
29 #ifdef TARGET_OS_FAMILY_linux
30 # include "jvm_linux.h"
31 #endif
32 #ifdef TARGET_OS_FAMILY_solaris
33 # include "jvm_solaris.h"
34 #endif
35 #ifdef TARGET_OS_FAMILY_windows
36 # include "jvm_windows.h"
37 #endif
38 #ifdef TARGET_OS_FAMILY_aix
39 # include "jvm_aix.h"
40 #endif
41 #ifdef TARGET_OS_FAMILY_bsd
42 # include "jvm_bsd.h"
43 #endif
45 #ifndef _JAVASOFT_JVM_H_
46 #define _JAVASOFT_JVM_H_
48 // HotSpot integration note:
49 //
50 // This file and jvm.h used with the JDK are identical,
51 // except for the three includes removed below
53 // #include <sys/stat.h>
54 // #include "jni.h"
55 // #include "jvm_md.h"
58 #ifdef __cplusplus
59 extern "C" {
60 #endif
62 /*
63 * This file contains additional functions exported from the VM.
64 * These functions are complementary to the standard JNI support.
65 * There are three parts to this file:
66 *
67 * First, this file contains the VM-related functions needed by native
68 * libraries in the standard Java API. For example, the java.lang.Object
69 * class needs VM-level functions that wait for and notify monitors.
70 *
71 * Second, this file contains the functions and constant definitions
72 * needed by the byte code verifier and class file format checker.
73 * These functions allow the verifier and format checker to be written
74 * in a VM-independent way.
75 *
76 * Third, this file contains various I/O and nerwork operations needed
77 * by the standard Java I/O and network APIs.
78 */
80 /*
81 * Bump the version number when either of the following happens:
82 *
83 * 1. There is a change in JVM_* functions.
84 *
85 * 2. There is a change in the contract between VM and Java classes.
86 * For example, if the VM relies on a new private field in Thread
87 * class.
88 */
90 #define JVM_INTERFACE_VERSION 4
92 JNIEXPORT jobjectArray JNICALL
93 JVM_GetMethodParameters(JNIEnv *env, jobject method);
95 JNIEXPORT jint JNICALL
96 JVM_GetInterfaceVersion(void);
98 /*************************************************************************
99 PART 1: Functions for Native Libraries
100 ************************************************************************/
101 /*
102 * java.lang.Object
103 */
104 JNIEXPORT jint JNICALL
105 JVM_IHashCode(JNIEnv *env, jobject obj);
107 JNIEXPORT void JNICALL
108 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
110 JNIEXPORT void JNICALL
111 JVM_MonitorNotify(JNIEnv *env, jobject obj);
113 JNIEXPORT void JNICALL
114 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
116 JNIEXPORT jobject JNICALL
117 JVM_Clone(JNIEnv *env, jobject obj);
119 /*
120 * java.lang.String
121 */
122 JNIEXPORT jstring JNICALL
123 JVM_InternString(JNIEnv *env, jstring str);
125 /*
126 * java.lang.System
127 */
128 JNIEXPORT jlong JNICALL
129 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
131 JNIEXPORT jlong JNICALL
132 JVM_NanoTime(JNIEnv *env, jclass ignored);
134 JNIEXPORT void JNICALL
135 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
136 jobject dst, jint dst_pos, jint length);
138 JNIEXPORT jobject JNICALL
139 JVM_InitProperties(JNIEnv *env, jobject p);
141 /*
142 * java.io.File
143 */
144 JNIEXPORT void JNICALL
145 JVM_OnExit(void (*func)(void));
147 /*
148 * java.nio.Bits
149 */
150 JNIEXPORT void JNICALL
151 JVM_CopySwapMemory(JNIEnv *env, jobject srcObj, jlong srcOffset,
152 jobject dstObj, jlong dstOffset, jlong size,
153 jlong elemSize);
155 /*
156 * java.lang.Runtime
157 */
158 JNIEXPORT void JNICALL
159 JVM_Exit(jint code);
161 JNIEXPORT void JNICALL
162 JVM_Halt(jint code);
164 JNIEXPORT void JNICALL
165 JVM_GC(void);
167 /* Returns the number of real-time milliseconds that have elapsed since the
168 * least-recently-inspected heap object was last inspected by the garbage
169 * collector.
170 *
171 * For simple stop-the-world collectors this value is just the time
172 * since the most recent collection. For generational collectors it is the
173 * time since the oldest generation was most recently collected. Other
174 * collectors are free to return a pessimistic estimate of the elapsed time, or
175 * simply the time since the last full collection was performed.
176 *
177 * Note that in the presence of reference objects, a given object that is no
178 * longer strongly reachable may have to be inspected multiple times before it
179 * can be reclaimed.
180 */
181 JNIEXPORT jlong JNICALL
182 JVM_MaxObjectInspectionAge(void);
184 JNIEXPORT void JNICALL
185 JVM_TraceInstructions(jboolean on);
187 JNIEXPORT void JNICALL
188 JVM_TraceMethodCalls(jboolean on);
190 JNIEXPORT jlong JNICALL
191 JVM_TotalMemory(void);
193 JNIEXPORT jlong JNICALL
194 JVM_FreeMemory(void);
196 JNIEXPORT jlong JNICALL
197 JVM_MaxMemory(void);
199 JNIEXPORT jint JNICALL
200 JVM_ActiveProcessorCount(void);
202 JNIEXPORT void * JNICALL
203 JVM_LoadLibrary(const char *name);
205 JNIEXPORT void JNICALL
206 JVM_UnloadLibrary(void * handle);
208 JNIEXPORT void * JNICALL
209 JVM_FindLibraryEntry(void *handle, const char *name);
211 JNIEXPORT jboolean JNICALL
212 JVM_IsSupportedJNIVersion(jint version);
214 /*
215 * java.lang.Float and java.lang.Double
216 */
217 JNIEXPORT jboolean JNICALL
218 JVM_IsNaN(jdouble d);
220 /*
221 * java.lang.Throwable
222 */
223 JNIEXPORT void JNICALL
224 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
226 JNIEXPORT jint JNICALL
227 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
229 JNIEXPORT jobject JNICALL
230 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
232 /*
233 * java.lang.Compiler
234 */
235 JNIEXPORT void JNICALL
236 JVM_InitializeCompiler (JNIEnv *env, jclass compCls);
238 JNIEXPORT jboolean JNICALL
239 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls);
241 JNIEXPORT jboolean JNICALL
242 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls);
244 JNIEXPORT jboolean JNICALL
245 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname);
247 JNIEXPORT jobject JNICALL
248 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg);
250 JNIEXPORT void JNICALL
251 JVM_EnableCompiler(JNIEnv *env, jclass compCls);
253 JNIEXPORT void JNICALL
254 JVM_DisableCompiler(JNIEnv *env, jclass compCls);
256 /*
257 * java.lang.Thread
258 */
259 JNIEXPORT void JNICALL
260 JVM_StartThread(JNIEnv *env, jobject thread);
262 JNIEXPORT void JNICALL
263 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
265 JNIEXPORT jboolean JNICALL
266 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
268 JNIEXPORT void JNICALL
269 JVM_SuspendThread(JNIEnv *env, jobject thread);
271 JNIEXPORT void JNICALL
272 JVM_ResumeThread(JNIEnv *env, jobject thread);
274 JNIEXPORT void JNICALL
275 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
277 JNIEXPORT void JNICALL
278 JVM_Yield(JNIEnv *env, jclass threadClass);
280 JNIEXPORT void JNICALL
281 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
283 JNIEXPORT jobject JNICALL
284 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
286 JNIEXPORT jint JNICALL
287 JVM_CountStackFrames(JNIEnv *env, jobject thread);
289 JNIEXPORT void JNICALL
290 JVM_Interrupt(JNIEnv *env, jobject thread);
292 JNIEXPORT jboolean JNICALL
293 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
295 JNIEXPORT jboolean JNICALL
296 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
298 JNIEXPORT void JNICALL
299 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
301 JNIEXPORT jobjectArray JNICALL
302 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
304 JNIEXPORT void JNICALL
305 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
307 /* getStackTrace() and getAllStackTraces() method */
308 JNIEXPORT jobjectArray JNICALL
309 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
311 /*
312 * java.lang.SecurityManager
313 */
314 JNIEXPORT jclass JNICALL
315 JVM_CurrentLoadedClass(JNIEnv *env);
317 JNIEXPORT jobject JNICALL
318 JVM_CurrentClassLoader(JNIEnv *env);
320 JNIEXPORT jobjectArray JNICALL
321 JVM_GetClassContext(JNIEnv *env);
323 JNIEXPORT jint JNICALL
324 JVM_ClassDepth(JNIEnv *env, jstring name);
326 JNIEXPORT jint JNICALL
327 JVM_ClassLoaderDepth(JNIEnv *env);
329 /*
330 * java.lang.Package
331 */
332 JNIEXPORT jstring JNICALL
333 JVM_GetSystemPackage(JNIEnv *env, jstring name);
335 JNIEXPORT jobjectArray JNICALL
336 JVM_GetSystemPackages(JNIEnv *env);
338 /*
339 * java.io.ObjectInputStream
340 */
341 JNIEXPORT jobject JNICALL
342 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass,
343 jclass initClass);
345 JNIEXPORT jobject JNICALL
346 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass,
347 jint length);
349 JNIEXPORT jobject JNICALL
350 JVM_LatestUserDefinedLoader(JNIEnv *env);
352 /*
353 * This function has been deprecated and should not be considered
354 * part of the specified JVM interface.
355 */
356 JNIEXPORT jclass JNICALL
357 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass,
358 jstring currClassName);
360 /*
361 * java.lang.reflect.Array
362 */
363 JNIEXPORT jint JNICALL
364 JVM_GetArrayLength(JNIEnv *env, jobject arr);
366 JNIEXPORT jobject JNICALL
367 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
369 JNIEXPORT jvalue JNICALL
370 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
372 JNIEXPORT void JNICALL
373 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
375 JNIEXPORT void JNICALL
376 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
377 unsigned char vCode);
379 JNIEXPORT jobject JNICALL
380 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
382 JNIEXPORT jobject JNICALL
383 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
385 /*
386 * java.lang.Class and java.lang.ClassLoader
387 */
389 #define JVM_CALLER_DEPTH -1
391 /*
392 * Returns the class in which the code invoking the native method
393 * belongs.
394 *
395 * Note that in JDK 1.1, native methods did not create a frame.
396 * In 1.2, they do. Therefore native methods like Class.forName
397 * can no longer look at the current frame for the caller class.
398 */
399 JNIEXPORT jclass JNICALL
400 JVM_GetCallerClass(JNIEnv *env, int n);
402 /*
403 * Find primitive classes
404 * utf: class name
405 */
406 JNIEXPORT jclass JNICALL
407 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
409 /*
410 * Link the class
411 */
412 JNIEXPORT void JNICALL
413 JVM_ResolveClass(JNIEnv *env, jclass cls);
415 /*
416 * Find a class from a given class loader. Throw ClassNotFoundException
417 * or NoClassDefFoundError depending on the value of the last
418 * argument.
419 */
420 JNIEXPORT jclass JNICALL
421 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init,
422 jobject loader, jboolean throwError);
424 /*
425 * Find a class from a boot class loader. Returns NULL if class not found.
426 */
427 JNIEXPORT jclass JNICALL
428 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
430 /*
431 * Find a class from a given class loader. Throws ClassNotFoundException.
432 * name: name of class
433 * init: whether initialization is done
434 * loader: class loader to look up the class. This may not be the same as the caller's
435 * class loader.
436 * caller: initiating class. The initiating class may be null when a security
437 * manager is not installed.
438 */
439 JNIEXPORT jclass JNICALL
440 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
441 jobject loader, jclass caller);
443 /*
444 * Find a class from a given class.
445 */
446 JNIEXPORT jclass JNICALL
447 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
448 jclass from);
450 /* Find a loaded class cached by the VM */
451 JNIEXPORT jclass JNICALL
452 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
454 /* Define a class */
455 JNIEXPORT jclass JNICALL
456 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
457 jsize len, jobject pd);
459 /* Define a class with a source (added in JDK1.5) */
460 JNIEXPORT jclass JNICALL
461 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
462 const jbyte *buf, jsize len, jobject pd,
463 const char *source);
465 /* Define a class with a source with conditional verification (added HSX 14)
466 * -Xverify:all will verify anyway, -Xverify:none will not verify,
467 * -Xverify:remote (default) will obey this conditional
468 * i.e. true = should_verify_class
469 */
470 JNIEXPORT jclass JNICALL
471 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name,
472 jobject loader, const jbyte *buf,
473 jsize len, jobject pd, const char *source,
474 jboolean verify);
476 /*
477 * Reflection support functions
478 */
480 JNIEXPORT jstring JNICALL
481 JVM_GetClassName(JNIEnv *env, jclass cls);
483 JNIEXPORT jobjectArray JNICALL
484 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
486 JNIEXPORT jobject JNICALL
487 JVM_GetClassLoader(JNIEnv *env, jclass cls);
489 JNIEXPORT jboolean JNICALL
490 JVM_IsInterface(JNIEnv *env, jclass cls);
492 JNIEXPORT jobjectArray JNICALL
493 JVM_GetClassSigners(JNIEnv *env, jclass cls);
495 JNIEXPORT void JNICALL
496 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
498 JNIEXPORT jobject JNICALL
499 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
501 JNIEXPORT jboolean JNICALL
502 JVM_IsArrayClass(JNIEnv *env, jclass cls);
504 JNIEXPORT jboolean JNICALL
505 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
507 JNIEXPORT jclass JNICALL
508 JVM_GetComponentType(JNIEnv *env, jclass cls);
510 JNIEXPORT jint JNICALL
511 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
513 JNIEXPORT jobjectArray JNICALL
514 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
516 JNIEXPORT jclass JNICALL
517 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
519 /* Generics support (JDK 1.5) */
520 JNIEXPORT jstring JNICALL
521 JVM_GetClassSignature(JNIEnv *env, jclass cls);
523 /* Annotations support (JDK 1.5) */
524 JNIEXPORT jbyteArray JNICALL
525 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
527 /* Annotations support (JDK 1.6) */
529 // field is a handle to a java.lang.reflect.Field object
530 JNIEXPORT jbyteArray JNICALL
531 JVM_GetFieldAnnotations(JNIEnv *env, jobject field);
533 // method is a handle to a java.lang.reflect.Method object
534 JNIEXPORT jbyteArray JNICALL
535 JVM_GetMethodAnnotations(JNIEnv *env, jobject method);
537 // method is a handle to a java.lang.reflect.Method object
538 JNIEXPORT jbyteArray JNICALL
539 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method);
541 // method is a handle to a java.lang.reflect.Method object
542 JNIEXPORT jbyteArray JNICALL
543 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method);
545 /* Type use annotations support (JDK 1.8) */
547 JNIEXPORT jbyteArray JNICALL
548 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
550 // field is a handle to a java.lang.reflect.Field object
551 JNIEXPORT jbyteArray JNICALL
552 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
554 // method is a handle to a java.lang.reflect.Method object
555 JNIEXPORT jbyteArray JNICALL
556 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
558 /*
559 * New (JDK 1.4) reflection implementation
560 */
562 JNIEXPORT jobjectArray JNICALL
563 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
565 JNIEXPORT jobjectArray JNICALL
566 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
568 JNIEXPORT jobjectArray JNICALL
569 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
571 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
572 This returns the access flags for the class as specified in the
573 class file rather than searching the InnerClasses attribute (if
574 present) to find the source-level access flags. Only the values of
575 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
576 valid. */
577 JNIEXPORT jint JNICALL
578 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
580 /*
581 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
582 */
584 JNIEXPORT jobject JNICALL
585 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
587 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
588 (JNIEnv *env, jobject obj, jobject unused);
590 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
591 (JNIEnv *env, jobject obj, jobject unused, jint index);
593 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
594 (JNIEnv *env, jobject obj, jobject unused, jint index);
596 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
597 (JNIEnv *env, jobject obj, jobject unused, jint index);
599 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
600 (JNIEnv *env, jobject obj, jobject unused, jint index);
602 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
603 (JNIEnv *env, jobject obj, jobject unused, jint index);
605 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
606 (JNIEnv *env, jobject obj, jobject unused, jint index);
608 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
609 (JNIEnv *env, jobject obj, jobject unused, jint index);
611 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
612 (JNIEnv *env, jobject obj, jobject unused, jint index);
614 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
615 (JNIEnv *env, jobject obj, jobject unused, jint index);
617 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
618 (JNIEnv *env, jobject obj, jobject unused, jint index);
620 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
621 (JNIEnv *env, jobject obj, jobject unused, jint index);
623 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
624 (JNIEnv *env, jobject obj, jobject unused, jint index);
626 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
627 (JNIEnv *env, jobject obj, jobject unused, jint index);
629 /*
630 * java.security.*
631 */
633 JNIEXPORT jobject JNICALL
634 JVM_DoPrivileged(JNIEnv *env, jclass cls,
635 jobject action, jobject context, jboolean wrapException);
637 JNIEXPORT jobject JNICALL
638 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
640 JNIEXPORT jobject JNICALL
641 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
643 /*
644 * Signal support, used to implement the shutdown sequence. Every VM must
645 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
646 * (^C) and the latter for external termination (kill, system shutdown, etc.).
647 * Other platform-dependent signal values may also be supported.
648 */
650 JNIEXPORT void * JNICALL
651 JVM_RegisterSignal(jint sig, void *handler);
653 JNIEXPORT jboolean JNICALL
654 JVM_RaiseSignal(jint sig);
656 JNIEXPORT jint JNICALL
657 JVM_FindSignal(const char *name);
659 /*
660 * Retrieve the assertion directives for the specified class.
661 */
662 JNIEXPORT jboolean JNICALL
663 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
665 /*
666 * Retrieve the assertion directives from the VM.
667 */
668 JNIEXPORT jobject JNICALL
669 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
671 /*
672 * java.util.concurrent.atomic.AtomicLong
673 */
674 JNIEXPORT jboolean JNICALL
675 JVM_SupportsCX8(void);
677 JNIEXPORT jboolean JNICALL
678 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal);
680 /*
681 * com.sun.dtrace.jsdt support
682 */
684 #define JVM_TRACING_DTRACE_VERSION 1
686 /*
687 * Structure to pass one probe description to JVM.
688 *
689 * The VM will overwrite the definition of the referenced method with
690 * code that will fire the probe.
691 */
692 typedef struct {
693 jmethodID method;
694 jstring function;
695 jstring name;
696 void* reserved[4]; // for future use
697 } JVM_DTraceProbe;
699 /**
700 * Encapsulates the stability ratings for a DTrace provider field
701 */
702 typedef struct {
703 jint nameStability;
704 jint dataStability;
705 jint dependencyClass;
706 } JVM_DTraceInterfaceAttributes;
708 /*
709 * Structure to pass one provider description to JVM
710 */
711 typedef struct {
712 jstring name;
713 JVM_DTraceProbe* probes;
714 jint probe_count;
715 JVM_DTraceInterfaceAttributes providerAttributes;
716 JVM_DTraceInterfaceAttributes moduleAttributes;
717 JVM_DTraceInterfaceAttributes functionAttributes;
718 JVM_DTraceInterfaceAttributes nameAttributes;
719 JVM_DTraceInterfaceAttributes argsAttributes;
720 void* reserved[4]; // for future use
721 } JVM_DTraceProvider;
723 /*
724 * Get the version number the JVM was built with
725 */
726 JNIEXPORT jint JNICALL
727 JVM_DTraceGetVersion(JNIEnv* env);
729 /*
730 * Register new probe with given signature, return global handle
731 *
732 * The version passed in is the version that the library code was
733 * built with.
734 */
735 JNIEXPORT jlong JNICALL
736 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
737 jint providers_count, JVM_DTraceProvider* providers);
739 /*
740 * Check JSDT probe
741 */
742 JNIEXPORT jboolean JNICALL
743 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
745 /*
746 * Destroy custom DOF
747 */
748 JNIEXPORT void JNICALL
749 JVM_DTraceDispose(JNIEnv* env, jlong handle);
751 /*
752 * Check to see if DTrace is supported by OS
753 */
754 JNIEXPORT jboolean JNICALL
755 JVM_DTraceIsSupported(JNIEnv* env);
757 /*************************************************************************
758 PART 2: Support for the Verifier and Class File Format Checker
759 ************************************************************************/
760 /*
761 * Return the class name in UTF format. The result is valid
762 * until JVM_ReleaseUTf is called.
763 *
764 * The caller must treat the string as a constant and not modify it
765 * in any way.
766 */
767 JNIEXPORT const char * JNICALL
768 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
770 /*
771 * Returns the constant pool types in the buffer provided by "types."
772 */
773 JNIEXPORT void JNICALL
774 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
776 /*
777 * Returns the number of Constant Pool entries.
778 */
779 JNIEXPORT jint JNICALL
780 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
782 /*
783 * Returns the number of *declared* fields or methods.
784 */
785 JNIEXPORT jint JNICALL
786 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
788 JNIEXPORT jint JNICALL
789 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
791 /*
792 * Returns the CP indexes of exceptions raised by a given method.
793 * Places the result in the given buffer.
794 *
795 * The method is identified by method_index.
796 */
797 JNIEXPORT void JNICALL
798 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
799 unsigned short *exceptions);
800 /*
801 * Returns the number of exceptions raised by a given method.
802 * The method is identified by method_index.
803 */
804 JNIEXPORT jint JNICALL
805 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
807 /*
808 * Returns the byte code sequence of a given method.
809 * Places the result in the given buffer.
810 *
811 * The method is identified by method_index.
812 */
813 JNIEXPORT void JNICALL
814 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
815 unsigned char *code);
817 /*
818 * Returns the length of the byte code sequence of a given method.
819 * The method is identified by method_index.
820 */
821 JNIEXPORT jint JNICALL
822 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
824 /*
825 * A structure used to a capture exception table entry in a Java method.
826 */
827 typedef struct {
828 jint start_pc;
829 jint end_pc;
830 jint handler_pc;
831 jint catchType;
832 } JVM_ExceptionTableEntryType;
834 /*
835 * Returns the exception table entry at entry_index of a given method.
836 * Places the result in the given buffer.
837 *
838 * The method is identified by method_index.
839 */
840 JNIEXPORT void JNICALL
841 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
842 jint entry_index,
843 JVM_ExceptionTableEntryType *entry);
845 /*
846 * Returns the length of the exception table of a given method.
847 * The method is identified by method_index.
848 */
849 JNIEXPORT jint JNICALL
850 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
852 /*
853 * Returns the modifiers of a given field.
854 * The field is identified by field_index.
855 */
856 JNIEXPORT jint JNICALL
857 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
859 /*
860 * Returns the modifiers of a given method.
861 * The method is identified by method_index.
862 */
863 JNIEXPORT jint JNICALL
864 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
866 /*
867 * Returns the number of local variables of a given method.
868 * The method is identified by method_index.
869 */
870 JNIEXPORT jint JNICALL
871 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
873 /*
874 * Returns the number of arguments (including this pointer) of a given method.
875 * The method is identified by method_index.
876 */
877 JNIEXPORT jint JNICALL
878 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
880 /*
881 * Returns the maximum amount of stack (in words) used by a given method.
882 * The method is identified by method_index.
883 */
884 JNIEXPORT jint JNICALL
885 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
887 /*
888 * Is a given method a constructor.
889 * The method is identified by method_index.
890 */
891 JNIEXPORT jboolean JNICALL
892 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
894 /*
895 * Is the given method generated by the VM.
896 * The method is identified by method_index.
897 */
898 JNIEXPORT jboolean JNICALL
899 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
901 /*
902 * Returns the name of a given method in UTF format.
903 * The result remains valid until JVM_ReleaseUTF is called.
904 *
905 * The caller must treat the string as a constant and not modify it
906 * in any way.
907 */
908 JNIEXPORT const char * JNICALL
909 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
911 /*
912 * Returns the signature of a given method in UTF format.
913 * The result remains valid until JVM_ReleaseUTF is called.
914 *
915 * The caller must treat the string as a constant and not modify it
916 * in any way.
917 */
918 JNIEXPORT const char * JNICALL
919 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
921 /*
922 * Returns the name of the field refered to at a given constant pool
923 * index.
924 *
925 * The result is in UTF format and remains valid until JVM_ReleaseUTF
926 * is called.
927 *
928 * The caller must treat the string as a constant and not modify it
929 * in any way.
930 */
931 JNIEXPORT const char * JNICALL
932 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
934 /*
935 * Returns the name of the method refered to at a given constant pool
936 * 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_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
947 /*
948 * Returns the signature of the method refered to at a given constant pool
949 * index.
950 *
951 * The result is in UTF format and remains valid until JVM_ReleaseUTF
952 * is called.
953 *
954 * The caller must treat the string as a constant and not modify it
955 * in any way.
956 */
957 JNIEXPORT const char * JNICALL
958 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
960 /*
961 * Returns the signature of the field refered to at a given constant pool
962 * index.
963 *
964 * The result is in UTF format and remains valid until JVM_ReleaseUTF
965 * is called.
966 *
967 * The caller must treat the string as a constant and not modify it
968 * in any way.
969 */
970 JNIEXPORT const char * JNICALL
971 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
973 /*
974 * Returns the class name refered to at a given constant pool index.
975 *
976 * The result is in UTF format and remains valid until JVM_ReleaseUTF
977 * is called.
978 *
979 * The caller must treat the string as a constant and not modify it
980 * in any way.
981 */
982 JNIEXPORT const char * JNICALL
983 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
985 /*
986 * Returns the class name refered to at a given constant pool index.
987 *
988 * The constant pool entry must refer to a CONSTANT_Fieldref.
989 *
990 * The result is in UTF format and remains valid until JVM_ReleaseUTF
991 * is called.
992 *
993 * The caller must treat the string as a constant and not modify it
994 * in any way.
995 */
996 JNIEXPORT const char * JNICALL
997 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
999 /*
1000 * Returns the class name refered to at a given constant pool index.
1001 *
1002 * The constant pool entry must refer to CONSTANT_Methodref or
1003 * CONSTANT_InterfaceMethodref.
1004 *
1005 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1006 * is called.
1007 *
1008 * The caller must treat the string as a constant and not modify it
1009 * in any way.
1010 */
1011 JNIEXPORT const char * JNICALL
1012 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1014 /*
1015 * Returns the modifiers of a field in calledClass. The field is
1016 * referred to in class cb at constant pool entry index.
1017 *
1018 * The caller must treat the string as a constant and not modify it
1019 * in any way.
1020 *
1021 * Returns -1 if the field does not exist in calledClass.
1022 */
1023 JNIEXPORT jint JNICALL
1024 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1026 /*
1027 * Returns the modifiers of a method in calledClass. The method is
1028 * referred to in class cb at constant pool entry index.
1029 *
1030 * Returns -1 if the method does not exist in calledClass.
1031 */
1032 JNIEXPORT jint JNICALL
1033 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1035 /*
1036 * Releases the UTF string obtained from the VM.
1037 */
1038 JNIEXPORT void JNICALL
1039 JVM_ReleaseUTF(const char *utf);
1041 /*
1042 * Compare if two classes are in the same package.
1043 */
1044 JNIEXPORT jboolean JNICALL
1045 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1047 /* Constants in class files */
1049 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */
1050 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */
1051 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */
1052 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */
1053 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */
1054 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */
1055 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */
1056 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */
1057 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */
1058 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */
1059 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */
1060 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */
1061 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */
1062 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */
1063 #define JVM_ACC_STRICT 0x0800 /* strict floating point */
1064 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */
1065 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */
1066 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */
1068 #define JVM_ACC_PUBLIC_BIT 0
1069 #define JVM_ACC_PRIVATE_BIT 1
1070 #define JVM_ACC_PROTECTED_BIT 2
1071 #define JVM_ACC_STATIC_BIT 3
1072 #define JVM_ACC_FINAL_BIT 4
1073 #define JVM_ACC_SYNCHRONIZED_BIT 5
1074 #define JVM_ACC_SUPER_BIT 5
1075 #define JVM_ACC_VOLATILE_BIT 6
1076 #define JVM_ACC_BRIDGE_BIT 6
1077 #define JVM_ACC_TRANSIENT_BIT 7
1078 #define JVM_ACC_VARARGS_BIT 7
1079 #define JVM_ACC_NATIVE_BIT 8
1080 #define JVM_ACC_INTERFACE_BIT 9
1081 #define JVM_ACC_ABSTRACT_BIT 10
1082 #define JVM_ACC_STRICT_BIT 11
1083 #define JVM_ACC_SYNTHETIC_BIT 12
1084 #define JVM_ACC_ANNOTATION_BIT 13
1085 #define JVM_ACC_ENUM_BIT 14
1087 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
1088 enum {
1089 JVM_CONSTANT_Utf8 = 1,
1090 JVM_CONSTANT_Unicode, /* unused */
1091 JVM_CONSTANT_Integer,
1092 JVM_CONSTANT_Float,
1093 JVM_CONSTANT_Long,
1094 JVM_CONSTANT_Double,
1095 JVM_CONSTANT_Class,
1096 JVM_CONSTANT_String,
1097 JVM_CONSTANT_Fieldref,
1098 JVM_CONSTANT_Methodref,
1099 JVM_CONSTANT_InterfaceMethodref,
1100 JVM_CONSTANT_NameAndType,
1101 JVM_CONSTANT_MethodHandle = 15, // JSR 292
1102 JVM_CONSTANT_MethodType = 16, // JSR 292
1103 //JVM_CONSTANT_(unused) = 17, // JSR 292 early drafts only
1104 JVM_CONSTANT_InvokeDynamic = 18, // JSR 292
1105 JVM_CONSTANT_ExternalMax = 18 // Last tag found in classfiles
1106 };
1108 /* JVM_CONSTANT_MethodHandle subtypes */
1109 enum {
1110 JVM_REF_getField = 1,
1111 JVM_REF_getStatic = 2,
1112 JVM_REF_putField = 3,
1113 JVM_REF_putStatic = 4,
1114 JVM_REF_invokeVirtual = 5,
1115 JVM_REF_invokeStatic = 6,
1116 JVM_REF_invokeSpecial = 7,
1117 JVM_REF_newInvokeSpecial = 8,
1118 JVM_REF_invokeInterface = 9
1119 };
1121 /* Used in the newarray instruction. */
1123 #define JVM_T_BOOLEAN 4
1124 #define JVM_T_CHAR 5
1125 #define JVM_T_FLOAT 6
1126 #define JVM_T_DOUBLE 7
1127 #define JVM_T_BYTE 8
1128 #define JVM_T_SHORT 9
1129 #define JVM_T_INT 10
1130 #define JVM_T_LONG 11
1132 /* JVM method signatures */
1134 #define JVM_SIGNATURE_ARRAY '['
1135 #define JVM_SIGNATURE_BYTE 'B'
1136 #define JVM_SIGNATURE_CHAR 'C'
1137 #define JVM_SIGNATURE_CLASS 'L'
1138 #define JVM_SIGNATURE_ENDCLASS ';'
1139 #define JVM_SIGNATURE_ENUM 'E'
1140 #define JVM_SIGNATURE_FLOAT 'F'
1141 #define JVM_SIGNATURE_DOUBLE 'D'
1142 #define JVM_SIGNATURE_FUNC '('
1143 #define JVM_SIGNATURE_ENDFUNC ')'
1144 #define JVM_SIGNATURE_INT 'I'
1145 #define JVM_SIGNATURE_LONG 'J'
1146 #define JVM_SIGNATURE_SHORT 'S'
1147 #define JVM_SIGNATURE_VOID 'V'
1148 #define JVM_SIGNATURE_BOOLEAN 'Z'
1150 /*
1151 * A function defined by the byte-code verifier and called by the VM.
1152 * This is not a function implemented in the VM.
1153 *
1154 * Returns JNI_FALSE if verification fails. A detailed error message
1155 * will be places in msg_buf, whose length is specified by buf_len.
1156 */
1157 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1158 jclass cb,
1159 char * msg_buf,
1160 jint buf_len);
1163 /*
1164 * Support for a VM-independent class format checker.
1165 */
1166 typedef struct {
1167 unsigned long code; /* byte code */
1168 unsigned long excs; /* exceptions */
1169 unsigned long etab; /* catch table */
1170 unsigned long lnum; /* line number */
1171 unsigned long lvar; /* local vars */
1172 } method_size_info;
1174 typedef struct {
1175 unsigned int constants; /* constant pool */
1176 unsigned int fields;
1177 unsigned int methods;
1178 unsigned int interfaces;
1179 unsigned int fields2; /* number of static 2-word fields */
1180 unsigned int innerclasses; /* # of records in InnerClasses attr */
1182 method_size_info clinit; /* memory used in clinit */
1183 method_size_info main; /* used everywhere else */
1184 } class_size_info;
1186 /*
1187 * Functions defined in libjava.so to perform string conversions.
1188 *
1189 */
1191 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1193 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1195 /* This is the function defined in libjava.so that performs class
1196 * format checks. This functions fills in size information about
1197 * the class file and returns:
1198 *
1199 * 0: good
1200 * -1: out of memory
1201 * -2: bad format
1202 * -3: unsupported version
1203 * -4: bad class name
1204 */
1206 typedef jint (*check_format_fn_t)(char *class_name,
1207 unsigned char *data,
1208 unsigned int data_size,
1209 class_size_info *class_size,
1210 char *message_buffer,
1211 jint buffer_length,
1212 jboolean measure_only,
1213 jboolean check_relaxed);
1215 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1216 JVM_ACC_FINAL | \
1217 JVM_ACC_SUPER | \
1218 JVM_ACC_INTERFACE | \
1219 JVM_ACC_ABSTRACT | \
1220 JVM_ACC_ANNOTATION | \
1221 JVM_ACC_ENUM | \
1222 JVM_ACC_SYNTHETIC)
1224 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1225 JVM_ACC_PRIVATE | \
1226 JVM_ACC_PROTECTED | \
1227 JVM_ACC_STATIC | \
1228 JVM_ACC_FINAL | \
1229 JVM_ACC_VOLATILE | \
1230 JVM_ACC_TRANSIENT | \
1231 JVM_ACC_ENUM | \
1232 JVM_ACC_SYNTHETIC)
1234 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1235 JVM_ACC_PRIVATE | \
1236 JVM_ACC_PROTECTED | \
1237 JVM_ACC_STATIC | \
1238 JVM_ACC_FINAL | \
1239 JVM_ACC_SYNCHRONIZED | \
1240 JVM_ACC_BRIDGE | \
1241 JVM_ACC_VARARGS | \
1242 JVM_ACC_NATIVE | \
1243 JVM_ACC_ABSTRACT | \
1244 JVM_ACC_STRICT | \
1245 JVM_ACC_SYNTHETIC)
1247 /*
1248 * This is the function defined in libjava.so to perform path
1249 * canonicalization. VM call this function before opening jar files
1250 * to load system classes.
1251 *
1252 */
1254 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1256 /*************************************************************************
1257 PART 3: I/O and Network Support
1258 ************************************************************************/
1260 /* Note that the JVM IO functions are expected to return JVM_IO_ERR
1261 * when there is any kind of error. The caller can then use the
1262 * platform specific support (e.g., errno) to get the detailed
1263 * error info. The JVM_GetLastErrorString procedure may also be used
1264 * to obtain a descriptive error string.
1265 */
1266 #define JVM_IO_ERR (-1)
1268 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO
1269 * operation has been disrupted by Thread.interrupt. There are a
1270 * number of technical difficulties related to interruptible IO that
1271 * need to be solved. For example, most existing programs do not handle
1272 * InterruptedIOExceptions specially, they simply treat those as any
1273 * IOExceptions, which typically indicate fatal errors.
1274 *
1275 * There are also two modes of operation for interruptible IO. In the
1276 * resumption mode, an interrupted IO operation is guaranteed not to
1277 * have any side-effects, and can be restarted. In the termination mode,
1278 * an interrupted IO operation corrupts the underlying IO stream, so
1279 * that the only reasonable operation on an interrupted stream is to
1280 * close that stream. The resumption mode seems to be impossible to
1281 * implement on Win32 and Solaris. Implementing the termination mode is
1282 * easier, but it's not clear that's the right semantics.
1283 *
1284 * Interruptible IO is not supported on Win32.It can be enabled/disabled
1285 * using a compile-time flag on Solaris. Third-party JVM ports do not
1286 * need to implement interruptible IO.
1287 */
1288 #define JVM_IO_INTR (-2)
1290 /* Write a string into the given buffer, in the platform's local encoding,
1291 * that describes the most recent system-level error to occur in this thread.
1292 * Return the length of the string or zero if no error occurred.
1293 */
1294 JNIEXPORT jint JNICALL
1295 JVM_GetLastErrorString(char *buf, int len);
1297 /*
1298 * Convert a pathname into native format. This function does syntactic
1299 * cleanup, such as removing redundant separator characters. It modifies
1300 * the given pathname string in place.
1301 */
1302 JNIEXPORT char * JNICALL
1303 JVM_NativePath(char *);
1305 /*
1306 * JVM I/O error codes
1307 */
1308 #define JVM_EEXIST -100
1310 /*
1311 * Open a file descriptor. This function returns a negative error code
1312 * on error, and a non-negative integer that is the file descriptor on
1313 * success.
1314 */
1315 JNIEXPORT jint JNICALL
1316 JVM_Open(const char *fname, jint flags, jint mode);
1318 /*
1319 * Close a file descriptor. This function returns -1 on error, and 0
1320 * on success.
1321 *
1322 * fd the file descriptor to close.
1323 */
1324 JNIEXPORT jint JNICALL
1325 JVM_Close(jint fd);
1327 /*
1328 * Read data from a file decriptor into a char array.
1329 *
1330 * fd the file descriptor to read from.
1331 * buf the buffer where to put the read data.
1332 * nbytes the number of bytes to read.
1333 *
1334 * This function returns -1 on error, and 0 on success.
1335 */
1336 JNIEXPORT jint JNICALL
1337 JVM_Read(jint fd, char *buf, jint nbytes);
1339 /*
1340 * Write data from a char array to a file decriptor.
1341 *
1342 * fd the file descriptor to read from.
1343 * buf the buffer from which to fetch the data.
1344 * nbytes the number of bytes to write.
1345 *
1346 * This function returns -1 on error, and 0 on success.
1347 */
1348 JNIEXPORT jint JNICALL
1349 JVM_Write(jint fd, char *buf, jint nbytes);
1351 /*
1352 * Returns the number of bytes available for reading from a given file
1353 * descriptor
1354 */
1355 JNIEXPORT jint JNICALL
1356 JVM_Available(jint fd, jlong *pbytes);
1358 /*
1359 * Move the file descriptor pointer from whence by offset.
1360 *
1361 * fd the file descriptor to move.
1362 * offset the number of bytes to move it by.
1363 * whence the start from where to move it.
1364 *
1365 * This function returns the resulting pointer location.
1366 */
1367 JNIEXPORT jlong JNICALL
1368 JVM_Lseek(jint fd, jlong offset, jint whence);
1370 /*
1371 * Set the length of the file associated with the given descriptor to the given
1372 * length. If the new length is longer than the current length then the file
1373 * is extended; the contents of the extended portion are not defined. The
1374 * value of the file pointer is undefined after this procedure returns.
1375 */
1376 JNIEXPORT jint JNICALL
1377 JVM_SetLength(jint fd, jlong length);
1379 /*
1380 * Synchronize the file descriptor's in memory state with that of the
1381 * physical device. Return of -1 is an error, 0 is OK.
1382 */
1383 JNIEXPORT jint JNICALL
1384 JVM_Sync(jint fd);
1386 /*
1387 * Networking library support
1388 */
1390 JNIEXPORT jint JNICALL
1391 JVM_InitializeSocketLibrary(void);
1393 struct sockaddr;
1395 JNIEXPORT jint JNICALL
1396 JVM_Socket(jint domain, jint type, jint protocol);
1398 JNIEXPORT jint JNICALL
1399 JVM_SocketClose(jint fd);
1401 JNIEXPORT jint JNICALL
1402 JVM_SocketShutdown(jint fd, jint howto);
1404 JNIEXPORT jint JNICALL
1405 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags);
1407 JNIEXPORT jint JNICALL
1408 JVM_Send(jint fd, char *buf, jint nBytes, jint flags);
1410 JNIEXPORT jint JNICALL
1411 JVM_Timeout(int fd, long timeout);
1413 JNIEXPORT jint JNICALL
1414 JVM_Listen(jint fd, jint count);
1416 JNIEXPORT jint JNICALL
1417 JVM_Connect(jint fd, struct sockaddr *him, jint len);
1419 JNIEXPORT jint JNICALL
1420 JVM_Bind(jint fd, struct sockaddr *him, jint len);
1422 JNIEXPORT jint JNICALL
1423 JVM_Accept(jint fd, struct sockaddr *him, jint *len);
1425 JNIEXPORT jint JNICALL
1426 JVM_RecvFrom(jint fd, char *buf, int nBytes,
1427 int flags, struct sockaddr *from, int *fromlen);
1429 JNIEXPORT jint JNICALL
1430 JVM_SendTo(jint fd, char *buf, int len,
1431 int flags, struct sockaddr *to, int tolen);
1433 JNIEXPORT jint JNICALL
1434 JVM_SocketAvailable(jint fd, jint *result);
1437 JNIEXPORT jint JNICALL
1438 JVM_GetSockName(jint fd, struct sockaddr *him, int *len);
1440 JNIEXPORT jint JNICALL
1441 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen);
1443 JNIEXPORT jint JNICALL
1444 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen);
1446 JNIEXPORT int JNICALL
1447 JVM_GetHostName(char* name, int namelen);
1449 /*
1450 * The standard printing functions supported by the Java VM. (Should they
1451 * be renamed to JVM_* in the future?
1452 */
1454 /*
1455 * BE CAREFUL! The following functions do not implement the
1456 * full feature set of standard C printf formats.
1457 */
1458 JNIEXPORT int
1459 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1461 JNIEXPORT int
1462 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1464 JNIEXPORT int
1465 jio_fprintf(FILE *, const char *fmt, ...);
1467 JNIEXPORT int
1468 jio_vfprintf(FILE *, const char *fmt, va_list args);
1471 JNIEXPORT void * JNICALL
1472 JVM_RawMonitorCreate(void);
1474 JNIEXPORT void JNICALL
1475 JVM_RawMonitorDestroy(void *mon);
1477 JNIEXPORT jint JNICALL
1478 JVM_RawMonitorEnter(void *mon);
1480 JNIEXPORT void JNICALL
1481 JVM_RawMonitorExit(void *mon);
1483 /*
1484 * java.lang.reflect.Method
1485 */
1486 JNIEXPORT jobject JNICALL
1487 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1489 /*
1490 * java.lang.reflect.Constructor
1491 */
1492 JNIEXPORT jobject JNICALL
1493 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1495 /*
1496 * java.lang.management support
1497 */
1498 JNIEXPORT void* JNICALL
1499 JVM_GetManagement(jint version);
1501 /*
1502 * com.sun.tools.attach.VirtualMachine support
1503 *
1504 * Initialize the agent properties with the properties maintained in the VM.
1505 */
1506 JNIEXPORT jobject JNICALL
1507 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1509 JNIEXPORT jstring JNICALL
1510 JVM_GetTemporaryDirectory(JNIEnv *env);
1512 /* Generics reflection support.
1513 *
1514 * Returns information about the given class's EnclosingMethod
1515 * attribute, if present, or null if the class had no enclosing
1516 * method.
1517 *
1518 * If non-null, the returned array contains three elements. Element 0
1519 * is the java.lang.Class of which the enclosing method is a member,
1520 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1521 * method's name and descriptor, respectively.
1522 */
1523 JNIEXPORT jobjectArray JNICALL
1524 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1526 /*
1527 * Java thread state support
1528 */
1529 enum {
1530 JAVA_THREAD_STATE_NEW = 0,
1531 JAVA_THREAD_STATE_RUNNABLE = 1,
1532 JAVA_THREAD_STATE_BLOCKED = 2,
1533 JAVA_THREAD_STATE_WAITING = 3,
1534 JAVA_THREAD_STATE_TIMED_WAITING = 4,
1535 JAVA_THREAD_STATE_TERMINATED = 5,
1536 JAVA_THREAD_STATE_COUNT = 6
1537 };
1539 /*
1540 * Returns an array of the threadStatus values representing the
1541 * given Java thread state. Returns NULL if the VM version is
1542 * incompatible with the JDK or doesn't support the given
1543 * Java thread state.
1544 */
1545 JNIEXPORT jintArray JNICALL
1546 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState);
1548 /*
1549 * Returns an array of the substate names representing the
1550 * given Java thread state. Returns NULL if the VM version is
1551 * incompatible with the JDK or the VM doesn't support
1552 * the given Java thread state.
1553 * values must be the jintArray returned from JVM_GetThreadStateValues
1554 * and javaThreadState.
1555 */
1556 JNIEXPORT jobjectArray JNICALL
1557 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values);
1559 /*
1560 * Returns true if the JVM's lookup cache indicates that this class is
1561 * known to NOT exist for the given loader.
1562 */
1563 JNIEXPORT jboolean JNICALL
1564 JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname);
1566 /*
1567 * Returns an array of all URLs that are stored in the JVM's lookup cache
1568 * for the given loader. NULL if the lookup cache is unavailable.
1569 */
1570 JNIEXPORT jobjectArray JNICALL
1571 JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader);
1573 /*
1574 * Returns an array of all URLs that *may* contain the resource_name for the
1575 * given loader. This function returns an integer array, each element
1576 * of which can be used to index into the array returned by
1577 * JVM_GetResourceLookupCacheURLs of the same loader to determine the
1578 * URLs.
1579 */
1580 JNIEXPORT jintArray JNICALL
1581 JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name);
1584 /* =========================================================================
1585 * The following defines a private JVM interface that the JDK can query
1586 * for the JVM version and capabilities. sun.misc.Version defines
1587 * the methods for getting the VM version and its capabilities.
1588 *
1589 * When a new bit is added, the following should be updated to provide
1590 * access to the new capability:
1591 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1592 * SDK: Version class
1593 *
1594 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1595 * JVM to query for the JDK version and capabilities.
1596 *
1597 * When a new bit is added, the following should be updated to provide
1598 * access to the new capability:
1599 * HS: JDK_Version class
1600 * SDK: JDK_GetVersionInfo0
1601 *
1602 * ==========================================================================
1603 */
1604 typedef struct {
1605 /* HotSpot Express VM version string:
1606 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>]
1607 */
1608 unsigned int jvm_version; /* Consists of major.minor.0.build */
1609 unsigned int update_version : 8; /* 0 in HotSpot Express VM */
1610 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */
1611 unsigned int reserved1 : 16;
1612 unsigned int reserved2;
1614 /* The following bits represents JVM supports that JDK has dependency on.
1615 * JDK can use these bits to determine which JVM version
1616 * and support it has to maintain runtime compatibility.
1617 *
1618 * When a new bit is added in a minor or update release, make sure
1619 * the new bit is also added in the main/baseline.
1620 */
1621 unsigned int is_attachable : 1;
1622 unsigned int : 31;
1623 unsigned int : 32;
1624 unsigned int : 32;
1625 } jvm_version_info;
1627 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1628 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1629 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp).
1630 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1631 /* Build number is available in all HotSpot Express VM builds.
1632 * It is defined in make/hotspot_version file.
1633 */
1634 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1636 JNIEXPORT void JNICALL
1637 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1639 typedef struct {
1640 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
1641 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */
1642 /* and build number (xx) */
1643 unsigned int update_version : 8; /* Update release version (uu) */
1644 unsigned int special_update_version : 8; /* Special update release version (c)*/
1645 unsigned int reserved1 : 16;
1646 unsigned int reserved2;
1648 /* The following bits represents new JDK supports that VM has dependency on.
1649 * VM implementation can use these bits to determine which JDK version
1650 * and support it has to maintain runtime compatibility.
1651 *
1652 * When a new bit is added in a minor or update release, make sure
1653 * the new bit is also added in the main/baseline.
1654 */
1655 unsigned int thread_park_blocker : 1;
1656 unsigned int post_vm_init_hook_enabled : 1;
1657 unsigned int pending_list_uses_discovered_field : 1;
1658 unsigned int : 29;
1659 unsigned int : 32;
1660 unsigned int : 32;
1661 } jdk_version_info;
1663 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1664 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1665 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1667 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
1668 * It will be zero for internal builds.
1669 */
1670 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1672 /*
1673 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1674 * that is dynamically looked up by JVM.
1675 */
1676 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1678 /*
1679 * This structure is used by the launcher to get the default thread
1680 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1681 * version of 1.1. As it is not supported otherwise, it has been removed
1682 * from jni.h
1683 */
1684 typedef struct JDK1_1InitArgs {
1685 jint version;
1687 char **properties;
1688 jint checkSource;
1689 jint nativeStackSize;
1690 jint javaStackSize;
1691 jint minHeapSize;
1692 jint maxHeapSize;
1693 jint verifyMode;
1694 char *classpath;
1696 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1697 void (JNICALL *exit)(jint code);
1698 void (JNICALL *abort)(void);
1700 jint enableClassGC;
1701 jint enableVerboseGC;
1702 jint disableAsyncGC;
1703 jint verbose;
1704 jboolean debugging;
1705 jint debugPort;
1706 } JDK1_1InitArgs;
1708 #ifdef __cplusplus
1709 } /* extern "C" */
1710 #endif /* __cplusplus */
1712 #endif /* !_JAVASOFT_JVM_H_ */
1714 #endif // SHARE_VM_PRIMS_JVM_H
