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src/share/vm/prims/jvm.h@eb7ce841ccec
src/share/vm/prims/jvm.h
Sat, 24 Oct 2020 16:43:47 +0800
- author
- aoqi
- date
- Sat, 24 Oct 2020 16:43:47 +0800
- changeset 10015
- eb7ce841ccec
- parent 9931
- fd44df5e3bc3
- parent 9987
- a025f6d9e6e8
- 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_BeforeHalt();
164 JNIEXPORT void JNICALL
165 JVM_Halt(jint code);
167 JNIEXPORT void JNICALL
168 JVM_GC(void);
170 /* Returns the number of real-time milliseconds that have elapsed since the
171 * least-recently-inspected heap object was last inspected by the garbage
172 * collector.
173 *
174 * For simple stop-the-world collectors this value is just the time
175 * since the most recent collection. For generational collectors it is the
176 * time since the oldest generation was most recently collected. Other
177 * collectors are free to return a pessimistic estimate of the elapsed time, or
178 * simply the time since the last full collection was performed.
179 *
180 * Note that in the presence of reference objects, a given object that is no
181 * longer strongly reachable may have to be inspected multiple times before it
182 * can be reclaimed.
183 */
184 JNIEXPORT jlong JNICALL
185 JVM_MaxObjectInspectionAge(void);
187 JNIEXPORT void JNICALL
188 JVM_TraceInstructions(jboolean on);
190 JNIEXPORT void JNICALL
191 JVM_TraceMethodCalls(jboolean on);
193 JNIEXPORT jlong JNICALL
194 JVM_TotalMemory(void);
196 JNIEXPORT jlong JNICALL
197 JVM_FreeMemory(void);
199 JNIEXPORT jlong JNICALL
200 JVM_MaxMemory(void);
202 JNIEXPORT jint JNICALL
203 JVM_ActiveProcessorCount(void);
205 JNIEXPORT jboolean JNICALL
206 JVM_IsUseContainerSupport(void);
208 JNIEXPORT void * JNICALL
209 JVM_LoadLibrary(const char *name);
211 JNIEXPORT void JNICALL
212 JVM_UnloadLibrary(void * handle);
214 JNIEXPORT void * JNICALL
215 JVM_FindLibraryEntry(void *handle, const char *name);
217 JNIEXPORT jboolean JNICALL
218 JVM_IsSupportedJNIVersion(jint version);
220 /*
221 * java.lang.Float and java.lang.Double
222 */
223 JNIEXPORT jboolean JNICALL
224 JVM_IsNaN(jdouble d);
226 /*
227 * java.lang.Throwable
228 */
229 JNIEXPORT void JNICALL
230 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
232 JNIEXPORT jint JNICALL
233 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
235 JNIEXPORT jobject JNICALL
236 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
238 /*
239 * java.lang.Compiler
240 */
241 JNIEXPORT void JNICALL
242 JVM_InitializeCompiler (JNIEnv *env, jclass compCls);
244 JNIEXPORT jboolean JNICALL
245 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls);
247 JNIEXPORT jboolean JNICALL
248 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls);
250 JNIEXPORT jboolean JNICALL
251 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname);
253 JNIEXPORT jobject JNICALL
254 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg);
256 JNIEXPORT void JNICALL
257 JVM_EnableCompiler(JNIEnv *env, jclass compCls);
259 JNIEXPORT void JNICALL
260 JVM_DisableCompiler(JNIEnv *env, jclass compCls);
262 /*
263 * java.lang.Thread
264 */
265 JNIEXPORT void JNICALL
266 JVM_StartThread(JNIEnv *env, jobject thread);
268 JNIEXPORT void JNICALL
269 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
271 JNIEXPORT jboolean JNICALL
272 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
274 JNIEXPORT void JNICALL
275 JVM_SuspendThread(JNIEnv *env, jobject thread);
277 JNIEXPORT void JNICALL
278 JVM_ResumeThread(JNIEnv *env, jobject thread);
280 JNIEXPORT void JNICALL
281 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
283 JNIEXPORT void JNICALL
284 JVM_Yield(JNIEnv *env, jclass threadClass);
286 JNIEXPORT void JNICALL
287 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
289 JNIEXPORT jobject JNICALL
290 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
292 JNIEXPORT jint JNICALL
293 JVM_CountStackFrames(JNIEnv *env, jobject thread);
295 JNIEXPORT void JNICALL
296 JVM_Interrupt(JNIEnv *env, jobject thread);
298 JNIEXPORT jboolean JNICALL
299 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
301 JNIEXPORT jboolean JNICALL
302 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
304 JNIEXPORT void JNICALL
305 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
307 JNIEXPORT jobjectArray JNICALL
308 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
310 JNIEXPORT void JNICALL
311 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
313 /* getStackTrace() and getAllStackTraces() method */
314 JNIEXPORT jobjectArray JNICALL
315 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
317 /*
318 * java.lang.SecurityManager
319 */
320 JNIEXPORT jclass JNICALL
321 JVM_CurrentLoadedClass(JNIEnv *env);
323 JNIEXPORT jobject JNICALL
324 JVM_CurrentClassLoader(JNIEnv *env);
326 JNIEXPORT jobjectArray JNICALL
327 JVM_GetClassContext(JNIEnv *env);
329 JNIEXPORT jint JNICALL
330 JVM_ClassDepth(JNIEnv *env, jstring name);
332 JNIEXPORT jint JNICALL
333 JVM_ClassLoaderDepth(JNIEnv *env);
335 /*
336 * java.lang.Package
337 */
338 JNIEXPORT jstring JNICALL
339 JVM_GetSystemPackage(JNIEnv *env, jstring name);
341 JNIEXPORT jobjectArray JNICALL
342 JVM_GetSystemPackages(JNIEnv *env);
344 /*
345 * java.io.ObjectInputStream
346 */
347 JNIEXPORT jobject JNICALL
348 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass,
349 jclass initClass);
351 JNIEXPORT jobject JNICALL
352 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass,
353 jint length);
355 JNIEXPORT jobject JNICALL
356 JVM_LatestUserDefinedLoader(JNIEnv *env);
358 /*
359 * This function has been deprecated and should not be considered
360 * part of the specified JVM interface.
361 */
362 JNIEXPORT jclass JNICALL
363 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass,
364 jstring currClassName);
366 /*
367 * java.lang.reflect.Array
368 */
369 JNIEXPORT jint JNICALL
370 JVM_GetArrayLength(JNIEnv *env, jobject arr);
372 JNIEXPORT jobject JNICALL
373 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
375 JNIEXPORT jvalue JNICALL
376 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
378 JNIEXPORT void JNICALL
379 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
381 JNIEXPORT void JNICALL
382 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
383 unsigned char vCode);
385 JNIEXPORT jobject JNICALL
386 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
388 JNIEXPORT jobject JNICALL
389 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
391 /*
392 * java.lang.Class and java.lang.ClassLoader
393 */
395 #define JVM_CALLER_DEPTH -1
397 /*
398 * Returns the class in which the code invoking the native method
399 * belongs.
400 *
401 * Note that in JDK 1.1, native methods did not create a frame.
402 * In 1.2, they do. Therefore native methods like Class.forName
403 * can no longer look at the current frame for the caller class.
404 */
405 JNIEXPORT jclass JNICALL
406 JVM_GetCallerClass(JNIEnv *env, int n);
408 /*
409 * Find primitive classes
410 * utf: class name
411 */
412 JNIEXPORT jclass JNICALL
413 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
415 /*
416 * Link the class
417 */
418 JNIEXPORT void JNICALL
419 JVM_ResolveClass(JNIEnv *env, jclass cls);
421 /*
422 * Find a class from a given class loader. Throw ClassNotFoundException
423 * or NoClassDefFoundError depending on the value of the last
424 * argument.
425 */
426 JNIEXPORT jclass JNICALL
427 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init,
428 jobject loader, jboolean throwError);
430 /*
431 * Find a class from a boot class loader. Returns NULL if class not found.
432 */
433 JNIEXPORT jclass JNICALL
434 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
436 /*
437 * Find a class from a given class loader. Throws ClassNotFoundException.
438 * name: name of class
439 * init: whether initialization is done
440 * loader: class loader to look up the class. This may not be the same as the caller's
441 * class loader.
442 * caller: initiating class. The initiating class may be null when a security
443 * manager is not installed.
444 */
445 JNIEXPORT jclass JNICALL
446 JVM_FindClassFromCaller(JNIEnv *env, const char *name, jboolean init,
447 jobject loader, jclass caller);
449 /*
450 * Find a class from a given class.
451 */
452 JNIEXPORT jclass JNICALL
453 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
454 jclass from);
456 /* Find a loaded class cached by the VM */
457 JNIEXPORT jclass JNICALL
458 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
460 /* Define a class */
461 JNIEXPORT jclass JNICALL
462 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
463 jsize len, jobject pd);
465 /* Define a class with a source (added in JDK1.5) */
466 JNIEXPORT jclass JNICALL
467 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
468 const jbyte *buf, jsize len, jobject pd,
469 const char *source);
471 /* Define a class with a source with conditional verification (added HSX 14)
472 * -Xverify:all will verify anyway, -Xverify:none will not verify,
473 * -Xverify:remote (default) will obey this conditional
474 * i.e. true = should_verify_class
475 */
476 JNIEXPORT jclass JNICALL
477 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name,
478 jobject loader, const jbyte *buf,
479 jsize len, jobject pd, const char *source,
480 jboolean verify);
482 /*
483 * Reflection support functions
484 */
486 JNIEXPORT jstring JNICALL
487 JVM_GetClassName(JNIEnv *env, jclass cls);
489 JNIEXPORT jobjectArray JNICALL
490 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
492 JNIEXPORT jobject JNICALL
493 JVM_GetClassLoader(JNIEnv *env, jclass cls);
495 JNIEXPORT jboolean JNICALL
496 JVM_IsInterface(JNIEnv *env, jclass cls);
498 JNIEXPORT jobjectArray JNICALL
499 JVM_GetClassSigners(JNIEnv *env, jclass cls);
501 JNIEXPORT void JNICALL
502 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
504 JNIEXPORT jobject JNICALL
505 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
507 JNIEXPORT jboolean JNICALL
508 JVM_IsArrayClass(JNIEnv *env, jclass cls);
510 JNIEXPORT jboolean JNICALL
511 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
513 JNIEXPORT jclass JNICALL
514 JVM_GetComponentType(JNIEnv *env, jclass cls);
516 JNIEXPORT jint JNICALL
517 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
519 JNIEXPORT jobjectArray JNICALL
520 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
522 JNIEXPORT jclass JNICALL
523 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
525 /* Generics support (JDK 1.5) */
526 JNIEXPORT jstring JNICALL
527 JVM_GetClassSignature(JNIEnv *env, jclass cls);
529 /* Annotations support (JDK 1.5) */
530 JNIEXPORT jbyteArray JNICALL
531 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
533 /* Annotations support (JDK 1.6) */
535 // field is a handle to a java.lang.reflect.Field object
536 JNIEXPORT jbyteArray JNICALL
537 JVM_GetFieldAnnotations(JNIEnv *env, jobject field);
539 // method is a handle to a java.lang.reflect.Method object
540 JNIEXPORT jbyteArray JNICALL
541 JVM_GetMethodAnnotations(JNIEnv *env, jobject method);
543 // method is a handle to a java.lang.reflect.Method object
544 JNIEXPORT jbyteArray JNICALL
545 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method);
547 // method is a handle to a java.lang.reflect.Method object
548 JNIEXPORT jbyteArray JNICALL
549 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method);
551 /* Type use annotations support (JDK 1.8) */
553 JNIEXPORT jbyteArray JNICALL
554 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
556 // field is a handle to a java.lang.reflect.Field object
557 JNIEXPORT jbyteArray JNICALL
558 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
560 // method is a handle to a java.lang.reflect.Method object
561 JNIEXPORT jbyteArray JNICALL
562 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
564 /*
565 * New (JDK 1.4) reflection implementation
566 */
568 JNIEXPORT jobjectArray JNICALL
569 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
571 JNIEXPORT jobjectArray JNICALL
572 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
574 JNIEXPORT jobjectArray JNICALL
575 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
577 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
578 This returns the access flags for the class as specified in the
579 class file rather than searching the InnerClasses attribute (if
580 present) to find the source-level access flags. Only the values of
581 the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
582 valid. */
583 JNIEXPORT jint JNICALL
584 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
586 /*
587 * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
588 */
590 JNIEXPORT jobject JNICALL
591 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
593 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
594 (JNIEnv *env, jobject obj, jobject unused);
596 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
597 (JNIEnv *env, jobject obj, jobject unused, jint index);
599 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
600 (JNIEnv *env, jobject obj, jobject unused, jint index);
602 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
603 (JNIEnv *env, jobject obj, jobject unused, jint index);
605 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
606 (JNIEnv *env, jobject obj, jobject unused, jint index);
608 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
609 (JNIEnv *env, jobject obj, jobject unused, jint index);
611 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
612 (JNIEnv *env, jobject obj, jobject unused, jint index);
614 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
615 (JNIEnv *env, jobject obj, jobject unused, jint index);
617 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
618 (JNIEnv *env, jobject obj, jobject unused, jint index);
620 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
621 (JNIEnv *env, jobject obj, jobject unused, jint index);
623 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
624 (JNIEnv *env, jobject obj, jobject unused, jint index);
626 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
627 (JNIEnv *env, jobject obj, jobject unused, jint index);
629 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
630 (JNIEnv *env, jobject obj, jobject unused, jint index);
632 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
633 (JNIEnv *env, jobject obj, jobject unused, jint index);
635 /*
636 * java.security.*
637 */
639 JNIEXPORT jobject JNICALL
640 JVM_DoPrivileged(JNIEnv *env, jclass cls,
641 jobject action, jobject context, jboolean wrapException);
643 JNIEXPORT jobject JNICALL
644 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
646 JNIEXPORT jobject JNICALL
647 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
649 /*
650 * Signal support, used to implement the shutdown sequence. Every VM must
651 * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
652 * (^C) and the latter for external termination (kill, system shutdown, etc.).
653 * Other platform-dependent signal values may also be supported.
654 */
656 JNIEXPORT void * JNICALL
657 JVM_RegisterSignal(jint sig, void *handler);
659 JNIEXPORT jboolean JNICALL
660 JVM_RaiseSignal(jint sig);
662 JNIEXPORT jint JNICALL
663 JVM_FindSignal(const char *name);
665 /*
666 * Retrieve the assertion directives for the specified class.
667 */
668 JNIEXPORT jboolean JNICALL
669 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
671 /*
672 * Retrieve the assertion directives from the VM.
673 */
674 JNIEXPORT jobject JNICALL
675 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
677 /*
678 * java.util.concurrent.atomic.AtomicLong
679 */
680 JNIEXPORT jboolean JNICALL
681 JVM_SupportsCX8(void);
683 JNIEXPORT jboolean JNICALL
684 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal);
686 /*
687 * com.sun.dtrace.jsdt support
688 */
690 #define JVM_TRACING_DTRACE_VERSION 1
692 /*
693 * Structure to pass one probe description to JVM.
694 *
695 * The VM will overwrite the definition of the referenced method with
696 * code that will fire the probe.
697 */
698 typedef struct {
699 jmethodID method;
700 jstring function;
701 jstring name;
702 void* reserved[4]; // for future use
703 } JVM_DTraceProbe;
705 /**
706 * Encapsulates the stability ratings for a DTrace provider field
707 */
708 typedef struct {
709 jint nameStability;
710 jint dataStability;
711 jint dependencyClass;
712 } JVM_DTraceInterfaceAttributes;
714 /*
715 * Structure to pass one provider description to JVM
716 */
717 typedef struct {
718 jstring name;
719 JVM_DTraceProbe* probes;
720 jint probe_count;
721 JVM_DTraceInterfaceAttributes providerAttributes;
722 JVM_DTraceInterfaceAttributes moduleAttributes;
723 JVM_DTraceInterfaceAttributes functionAttributes;
724 JVM_DTraceInterfaceAttributes nameAttributes;
725 JVM_DTraceInterfaceAttributes argsAttributes;
726 void* reserved[4]; // for future use
727 } JVM_DTraceProvider;
729 /*
730 * Get the version number the JVM was built with
731 */
732 JNIEXPORT jint JNICALL
733 JVM_DTraceGetVersion(JNIEnv* env);
735 /*
736 * Register new probe with given signature, return global handle
737 *
738 * The version passed in is the version that the library code was
739 * built with.
740 */
741 JNIEXPORT jlong JNICALL
742 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
743 jint providers_count, JVM_DTraceProvider* providers);
745 /*
746 * Check JSDT probe
747 */
748 JNIEXPORT jboolean JNICALL
749 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
751 /*
752 * Destroy custom DOF
753 */
754 JNIEXPORT void JNICALL
755 JVM_DTraceDispose(JNIEnv* env, jlong handle);
757 /*
758 * Check to see if DTrace is supported by OS
759 */
760 JNIEXPORT jboolean JNICALL
761 JVM_DTraceIsSupported(JNIEnv* env);
763 /*************************************************************************
764 PART 2: Support for the Verifier and Class File Format Checker
765 ************************************************************************/
766 /*
767 * Return the class name in UTF format. The result is valid
768 * until JVM_ReleaseUTf is called.
769 *
770 * The caller must treat the string as a constant and not modify it
771 * in any way.
772 */
773 JNIEXPORT const char * JNICALL
774 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
776 /*
777 * Returns the constant pool types in the buffer provided by "types."
778 */
779 JNIEXPORT void JNICALL
780 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
782 /*
783 * Returns the number of Constant Pool entries.
784 */
785 JNIEXPORT jint JNICALL
786 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
788 /*
789 * Returns the number of *declared* fields or methods.
790 */
791 JNIEXPORT jint JNICALL
792 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
794 JNIEXPORT jint JNICALL
795 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
797 /*
798 * Returns the CP indexes of exceptions raised by a given method.
799 * Places the result in the given buffer.
800 *
801 * The method is identified by method_index.
802 */
803 JNIEXPORT void JNICALL
804 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
805 unsigned short *exceptions);
806 /*
807 * Returns the number of exceptions raised by a given method.
808 * The method is identified by method_index.
809 */
810 JNIEXPORT jint JNICALL
811 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
813 /*
814 * Returns the byte code sequence of a given method.
815 * Places the result in the given buffer.
816 *
817 * The method is identified by method_index.
818 */
819 JNIEXPORT void JNICALL
820 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
821 unsigned char *code);
823 /*
824 * Returns the length of the byte code sequence of a given method.
825 * The method is identified by method_index.
826 */
827 JNIEXPORT jint JNICALL
828 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
830 /*
831 * A structure used to a capture exception table entry in a Java method.
832 */
833 typedef struct {
834 jint start_pc;
835 jint end_pc;
836 jint handler_pc;
837 jint catchType;
838 } JVM_ExceptionTableEntryType;
840 /*
841 * Returns the exception table entry at entry_index of a given method.
842 * Places the result in the given buffer.
843 *
844 * The method is identified by method_index.
845 */
846 JNIEXPORT void JNICALL
847 JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
848 jint entry_index,
849 JVM_ExceptionTableEntryType *entry);
851 /*
852 * Returns the length of the exception table of a given method.
853 * The method is identified by method_index.
854 */
855 JNIEXPORT jint JNICALL
856 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
858 /*
859 * Returns the modifiers of a given field.
860 * The field is identified by field_index.
861 */
862 JNIEXPORT jint JNICALL
863 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
865 /*
866 * Returns the modifiers of a given method.
867 * The method is identified by method_index.
868 */
869 JNIEXPORT jint JNICALL
870 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
872 /*
873 * Returns the number of local variables of a given method.
874 * The method is identified by method_index.
875 */
876 JNIEXPORT jint JNICALL
877 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
879 /*
880 * Returns the number of arguments (including this pointer) of a given method.
881 * The method is identified by method_index.
882 */
883 JNIEXPORT jint JNICALL
884 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
886 /*
887 * Returns the maximum amount of stack (in words) used by a given method.
888 * The method is identified by method_index.
889 */
890 JNIEXPORT jint JNICALL
891 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
893 /*
894 * Is a given method a constructor.
895 * The method is identified by method_index.
896 */
897 JNIEXPORT jboolean JNICALL
898 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
900 /*
901 * Is the given method generated by the VM.
902 * The method is identified by method_index.
903 */
904 JNIEXPORT jboolean JNICALL
905 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
907 /*
908 * Returns the name of a given method in UTF format.
909 * The result remains valid until JVM_ReleaseUTF is called.
910 *
911 * The caller must treat the string as a constant and not modify it
912 * in any way.
913 */
914 JNIEXPORT const char * JNICALL
915 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
917 /*
918 * Returns the signature of a given method in UTF format.
919 * The result remains valid until JVM_ReleaseUTF is called.
920 *
921 * The caller must treat the string as a constant and not modify it
922 * in any way.
923 */
924 JNIEXPORT const char * JNICALL
925 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
927 /*
928 * Returns the name of the field refered to at a given constant pool
929 * index.
930 *
931 * The result is in UTF format and remains valid until JVM_ReleaseUTF
932 * is called.
933 *
934 * The caller must treat the string as a constant and not modify it
935 * in any way.
936 */
937 JNIEXPORT const char * JNICALL
938 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
940 /*
941 * Returns the name of the method refered to at a given constant pool
942 * index.
943 *
944 * The result is in UTF format and remains valid until JVM_ReleaseUTF
945 * is called.
946 *
947 * The caller must treat the string as a constant and not modify it
948 * in any way.
949 */
950 JNIEXPORT const char * JNICALL
951 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
953 /*
954 * Returns the signature of the method refered to at a given constant pool
955 * index.
956 *
957 * The result is in UTF format and remains valid until JVM_ReleaseUTF
958 * is called.
959 *
960 * The caller must treat the string as a constant and not modify it
961 * in any way.
962 */
963 JNIEXPORT const char * JNICALL
964 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
966 /*
967 * Returns the signature of the field refered to at a given constant pool
968 * index.
969 *
970 * The result is in UTF format and remains valid until JVM_ReleaseUTF
971 * is called.
972 *
973 * The caller must treat the string as a constant and not modify it
974 * in any way.
975 */
976 JNIEXPORT const char * JNICALL
977 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
979 /*
980 * Returns the class name refered to at a given constant pool index.
981 *
982 * The result is in UTF format and remains valid until JVM_ReleaseUTF
983 * is called.
984 *
985 * The caller must treat the string as a constant and not modify it
986 * in any way.
987 */
988 JNIEXPORT const char * JNICALL
989 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
991 /*
992 * Returns the class name refered to at a given constant pool index.
993 *
994 * The constant pool entry must refer to a CONSTANT_Fieldref.
995 *
996 * The result is in UTF format and remains valid until JVM_ReleaseUTF
997 * is called.
998 *
999 * The caller must treat the string as a constant and not modify it
1000 * in any way.
1001 */
1002 JNIEXPORT const char * JNICALL
1003 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
1005 /*
1006 * Returns the class name refered to at a given constant pool index.
1007 *
1008 * The constant pool entry must refer to CONSTANT_Methodref or
1009 * CONSTANT_InterfaceMethodref.
1010 *
1011 * The result is in UTF format and remains valid until JVM_ReleaseUTF
1012 * is called.
1013 *
1014 * The caller must treat the string as a constant and not modify it
1015 * in any way.
1016 */
1017 JNIEXPORT const char * JNICALL
1018 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
1020 /*
1021 * Returns the modifiers of a field in calledClass. The field is
1022 * referred to in class cb at constant pool entry index.
1023 *
1024 * The caller must treat the string as a constant and not modify it
1025 * in any way.
1026 *
1027 * Returns -1 if the field does not exist in calledClass.
1028 */
1029 JNIEXPORT jint JNICALL
1030 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1032 /*
1033 * Returns the modifiers of a method in calledClass. The method is
1034 * referred to in class cb at constant pool entry index.
1035 *
1036 * Returns -1 if the method does not exist in calledClass.
1037 */
1038 JNIEXPORT jint JNICALL
1039 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
1041 /*
1042 * Releases the UTF string obtained from the VM.
1043 */
1044 JNIEXPORT void JNICALL
1045 JVM_ReleaseUTF(const char *utf);
1047 /*
1048 * Compare if two classes are in the same package.
1049 */
1050 JNIEXPORT jboolean JNICALL
1051 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
1053 /* Constants in class files */
1055 #define JVM_ACC_PUBLIC 0x0001 /* visible to everyone */
1056 #define JVM_ACC_PRIVATE 0x0002 /* visible only to the defining class */
1057 #define JVM_ACC_PROTECTED 0x0004 /* visible to subclasses */
1058 #define JVM_ACC_STATIC 0x0008 /* instance variable is static */
1059 #define JVM_ACC_FINAL 0x0010 /* no further subclassing, overriding */
1060 #define JVM_ACC_SYNCHRONIZED 0x0020 /* wrap method call in monitor lock */
1061 #define JVM_ACC_SUPER 0x0020 /* funky handling of invokespecial */
1062 #define JVM_ACC_VOLATILE 0x0040 /* can not cache in registers */
1063 #define JVM_ACC_BRIDGE 0x0040 /* bridge method generated by compiler */
1064 #define JVM_ACC_TRANSIENT 0x0080 /* not persistent */
1065 #define JVM_ACC_VARARGS 0x0080 /* method declared with variable number of args */
1066 #define JVM_ACC_NATIVE 0x0100 /* implemented in C */
1067 #define JVM_ACC_INTERFACE 0x0200 /* class is an interface */
1068 #define JVM_ACC_ABSTRACT 0x0400 /* no definition provided */
1069 #define JVM_ACC_STRICT 0x0800 /* strict floating point */
1070 #define JVM_ACC_SYNTHETIC 0x1000 /* compiler-generated class, method or field */
1071 #define JVM_ACC_ANNOTATION 0x2000 /* annotation type */
1072 #define JVM_ACC_ENUM 0x4000 /* field is declared as element of enum */
1074 #define JVM_ACC_PUBLIC_BIT 0
1075 #define JVM_ACC_PRIVATE_BIT 1
1076 #define JVM_ACC_PROTECTED_BIT 2
1077 #define JVM_ACC_STATIC_BIT 3
1078 #define JVM_ACC_FINAL_BIT 4
1079 #define JVM_ACC_SYNCHRONIZED_BIT 5
1080 #define JVM_ACC_SUPER_BIT 5
1081 #define JVM_ACC_VOLATILE_BIT 6
1082 #define JVM_ACC_BRIDGE_BIT 6
1083 #define JVM_ACC_TRANSIENT_BIT 7
1084 #define JVM_ACC_VARARGS_BIT 7
1085 #define JVM_ACC_NATIVE_BIT 8
1086 #define JVM_ACC_INTERFACE_BIT 9
1087 #define JVM_ACC_ABSTRACT_BIT 10
1088 #define JVM_ACC_STRICT_BIT 11
1089 #define JVM_ACC_SYNTHETIC_BIT 12
1090 #define JVM_ACC_ANNOTATION_BIT 13
1091 #define JVM_ACC_ENUM_BIT 14
1093 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
1094 enum {
1095 JVM_CONSTANT_Utf8 = 1,
1096 JVM_CONSTANT_Unicode, /* unused */
1097 JVM_CONSTANT_Integer,
1098 JVM_CONSTANT_Float,
1099 JVM_CONSTANT_Long,
1100 JVM_CONSTANT_Double,
1101 JVM_CONSTANT_Class,
1102 JVM_CONSTANT_String,
1103 JVM_CONSTANT_Fieldref,
1104 JVM_CONSTANT_Methodref,
1105 JVM_CONSTANT_InterfaceMethodref,
1106 JVM_CONSTANT_NameAndType,
1107 JVM_CONSTANT_MethodHandle = 15, // JSR 292
1108 JVM_CONSTANT_MethodType = 16, // JSR 292
1109 //JVM_CONSTANT_(unused) = 17, // JSR 292 early drafts only
1110 JVM_CONSTANT_InvokeDynamic = 18, // JSR 292
1111 JVM_CONSTANT_ExternalMax = 18 // Last tag found in classfiles
1112 };
1114 /* JVM_CONSTANT_MethodHandle subtypes */
1115 enum {
1116 JVM_REF_getField = 1,
1117 JVM_REF_getStatic = 2,
1118 JVM_REF_putField = 3,
1119 JVM_REF_putStatic = 4,
1120 JVM_REF_invokeVirtual = 5,
1121 JVM_REF_invokeStatic = 6,
1122 JVM_REF_invokeSpecial = 7,
1123 JVM_REF_newInvokeSpecial = 8,
1124 JVM_REF_invokeInterface = 9
1125 };
1127 /* Used in the newarray instruction. */
1129 #define JVM_T_BOOLEAN 4
1130 #define JVM_T_CHAR 5
1131 #define JVM_T_FLOAT 6
1132 #define JVM_T_DOUBLE 7
1133 #define JVM_T_BYTE 8
1134 #define JVM_T_SHORT 9
1135 #define JVM_T_INT 10
1136 #define JVM_T_LONG 11
1138 /* JVM method signatures */
1140 #define JVM_SIGNATURE_ARRAY '['
1141 #define JVM_SIGNATURE_BYTE 'B'
1142 #define JVM_SIGNATURE_CHAR 'C'
1143 #define JVM_SIGNATURE_CLASS 'L'
1144 #define JVM_SIGNATURE_ENDCLASS ';'
1145 #define JVM_SIGNATURE_ENUM 'E'
1146 #define JVM_SIGNATURE_FLOAT 'F'
1147 #define JVM_SIGNATURE_DOUBLE 'D'
1148 #define JVM_SIGNATURE_FUNC '('
1149 #define JVM_SIGNATURE_ENDFUNC ')'
1150 #define JVM_SIGNATURE_INT 'I'
1151 #define JVM_SIGNATURE_LONG 'J'
1152 #define JVM_SIGNATURE_SHORT 'S'
1153 #define JVM_SIGNATURE_VOID 'V'
1154 #define JVM_SIGNATURE_BOOLEAN 'Z'
1156 /*
1157 * A function defined by the byte-code verifier and called by the VM.
1158 * This is not a function implemented in the VM.
1159 *
1160 * Returns JNI_FALSE if verification fails. A detailed error message
1161 * will be places in msg_buf, whose length is specified by buf_len.
1162 */
1163 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
1164 jclass cb,
1165 char * msg_buf,
1166 jint buf_len);
1169 /*
1170 * Support for a VM-independent class format checker.
1171 */
1172 typedef struct {
1173 unsigned long code; /* byte code */
1174 unsigned long excs; /* exceptions */
1175 unsigned long etab; /* catch table */
1176 unsigned long lnum; /* line number */
1177 unsigned long lvar; /* local vars */
1178 } method_size_info;
1180 typedef struct {
1181 unsigned int constants; /* constant pool */
1182 unsigned int fields;
1183 unsigned int methods;
1184 unsigned int interfaces;
1185 unsigned int fields2; /* number of static 2-word fields */
1186 unsigned int innerclasses; /* # of records in InnerClasses attr */
1188 method_size_info clinit; /* memory used in clinit */
1189 method_size_info main; /* used everywhere else */
1190 } class_size_info;
1192 /*
1193 * Functions defined in libjava.so to perform string conversions.
1194 *
1195 */
1197 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
1199 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
1201 /* This is the function defined in libjava.so that performs class
1202 * format checks. This functions fills in size information about
1203 * the class file and returns:
1204 *
1205 * 0: good
1206 * -1: out of memory
1207 * -2: bad format
1208 * -3: unsupported version
1209 * -4: bad class name
1210 */
1212 typedef jint (*check_format_fn_t)(char *class_name,
1213 unsigned char *data,
1214 unsigned int data_size,
1215 class_size_info *class_size,
1216 char *message_buffer,
1217 jint buffer_length,
1218 jboolean measure_only,
1219 jboolean check_relaxed);
1221 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
1222 JVM_ACC_FINAL | \
1223 JVM_ACC_SUPER | \
1224 JVM_ACC_INTERFACE | \
1225 JVM_ACC_ABSTRACT | \
1226 JVM_ACC_ANNOTATION | \
1227 JVM_ACC_ENUM | \
1228 JVM_ACC_SYNTHETIC)
1230 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
1231 JVM_ACC_PRIVATE | \
1232 JVM_ACC_PROTECTED | \
1233 JVM_ACC_STATIC | \
1234 JVM_ACC_FINAL | \
1235 JVM_ACC_VOLATILE | \
1236 JVM_ACC_TRANSIENT | \
1237 JVM_ACC_ENUM | \
1238 JVM_ACC_SYNTHETIC)
1240 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
1241 JVM_ACC_PRIVATE | \
1242 JVM_ACC_PROTECTED | \
1243 JVM_ACC_STATIC | \
1244 JVM_ACC_FINAL | \
1245 JVM_ACC_SYNCHRONIZED | \
1246 JVM_ACC_BRIDGE | \
1247 JVM_ACC_VARARGS | \
1248 JVM_ACC_NATIVE | \
1249 JVM_ACC_ABSTRACT | \
1250 JVM_ACC_STRICT | \
1251 JVM_ACC_SYNTHETIC)
1253 /*
1254 * This is the function defined in libjava.so to perform path
1255 * canonicalization. VM call this function before opening jar files
1256 * to load system classes.
1257 *
1258 */
1260 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
1262 /*************************************************************************
1263 PART 3: I/O and Network Support
1264 ************************************************************************/
1266 /* Note that the JVM IO functions are expected to return JVM_IO_ERR
1267 * when there is any kind of error. The caller can then use the
1268 * platform specific support (e.g., errno) to get the detailed
1269 * error info. The JVM_GetLastErrorString procedure may also be used
1270 * to obtain a descriptive error string.
1271 */
1272 #define JVM_IO_ERR (-1)
1274 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO
1275 * operation has been disrupted by Thread.interrupt. There are a
1276 * number of technical difficulties related to interruptible IO that
1277 * need to be solved. For example, most existing programs do not handle
1278 * InterruptedIOExceptions specially, they simply treat those as any
1279 * IOExceptions, which typically indicate fatal errors.
1280 *
1281 * There are also two modes of operation for interruptible IO. In the
1282 * resumption mode, an interrupted IO operation is guaranteed not to
1283 * have any side-effects, and can be restarted. In the termination mode,
1284 * an interrupted IO operation corrupts the underlying IO stream, so
1285 * that the only reasonable operation on an interrupted stream is to
1286 * close that stream. The resumption mode seems to be impossible to
1287 * implement on Win32 and Solaris. Implementing the termination mode is
1288 * easier, but it's not clear that's the right semantics.
1289 *
1290 * Interruptible IO is not supported on Win32.It can be enabled/disabled
1291 * using a compile-time flag on Solaris. Third-party JVM ports do not
1292 * need to implement interruptible IO.
1293 */
1294 #define JVM_IO_INTR (-2)
1296 /* Write a string into the given buffer, in the platform's local encoding,
1297 * that describes the most recent system-level error to occur in this thread.
1298 * Return the length of the string or zero if no error occurred.
1299 */
1300 JNIEXPORT jint JNICALL
1301 JVM_GetLastErrorString(char *buf, int len);
1303 /*
1304 * Convert a pathname into native format. This function does syntactic
1305 * cleanup, such as removing redundant separator characters. It modifies
1306 * the given pathname string in place.
1307 */
1308 JNIEXPORT char * JNICALL
1309 JVM_NativePath(char *);
1311 /*
1312 * JVM I/O error codes
1313 */
1314 #define JVM_EEXIST -100
1316 /*
1317 * Open a file descriptor. This function returns a negative error code
1318 * on error, and a non-negative integer that is the file descriptor on
1319 * success.
1320 */
1321 JNIEXPORT jint JNICALL
1322 JVM_Open(const char *fname, jint flags, jint mode);
1324 /*
1325 * Close a file descriptor. This function returns -1 on error, and 0
1326 * on success.
1327 *
1328 * fd the file descriptor to close.
1329 */
1330 JNIEXPORT jint JNICALL
1331 JVM_Close(jint fd);
1333 /*
1334 * Read data from a file decriptor into a char array.
1335 *
1336 * fd the file descriptor to read from.
1337 * buf the buffer where to put the read data.
1338 * nbytes the number of bytes to read.
1339 *
1340 * This function returns -1 on error, and 0 on success.
1341 */
1342 JNIEXPORT jint JNICALL
1343 JVM_Read(jint fd, char *buf, jint nbytes);
1345 /*
1346 * Write data from a char array to a file decriptor.
1347 *
1348 * fd the file descriptor to read from.
1349 * buf the buffer from which to fetch the data.
1350 * nbytes the number of bytes to write.
1351 *
1352 * This function returns -1 on error, and 0 on success.
1353 */
1354 JNIEXPORT jint JNICALL
1355 JVM_Write(jint fd, char *buf, jint nbytes);
1357 /*
1358 * Returns the number of bytes available for reading from a given file
1359 * descriptor
1360 */
1361 JNIEXPORT jint JNICALL
1362 JVM_Available(jint fd, jlong *pbytes);
1364 /*
1365 * Move the file descriptor pointer from whence by offset.
1366 *
1367 * fd the file descriptor to move.
1368 * offset the number of bytes to move it by.
1369 * whence the start from where to move it.
1370 *
1371 * This function returns the resulting pointer location.
1372 */
1373 JNIEXPORT jlong JNICALL
1374 JVM_Lseek(jint fd, jlong offset, jint whence);
1376 /*
1377 * Set the length of the file associated with the given descriptor to the given
1378 * length. If the new length is longer than the current length then the file
1379 * is extended; the contents of the extended portion are not defined. The
1380 * value of the file pointer is undefined after this procedure returns.
1381 */
1382 JNIEXPORT jint JNICALL
1383 JVM_SetLength(jint fd, jlong length);
1385 /*
1386 * Synchronize the file descriptor's in memory state with that of the
1387 * physical device. Return of -1 is an error, 0 is OK.
1388 */
1389 JNIEXPORT jint JNICALL
1390 JVM_Sync(jint fd);
1392 /*
1393 * Networking library support
1394 */
1396 JNIEXPORT jint JNICALL
1397 JVM_InitializeSocketLibrary(void);
1399 struct sockaddr;
1401 JNIEXPORT jint JNICALL
1402 JVM_Socket(jint domain, jint type, jint protocol);
1404 JNIEXPORT jint JNICALL
1405 JVM_SocketClose(jint fd);
1407 JNIEXPORT jint JNICALL
1408 JVM_SocketShutdown(jint fd, jint howto);
1410 JNIEXPORT jint JNICALL
1411 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags);
1413 JNIEXPORT jint JNICALL
1414 JVM_Send(jint fd, char *buf, jint nBytes, jint flags);
1416 JNIEXPORT jint JNICALL
1417 JVM_Timeout(int fd, long timeout);
1419 JNIEXPORT jint JNICALL
1420 JVM_Listen(jint fd, jint count);
1422 JNIEXPORT jint JNICALL
1423 JVM_Connect(jint fd, struct sockaddr *him, jint len);
1425 JNIEXPORT jint JNICALL
1426 JVM_Bind(jint fd, struct sockaddr *him, jint len);
1428 JNIEXPORT jint JNICALL
1429 JVM_Accept(jint fd, struct sockaddr *him, jint *len);
1431 JNIEXPORT jint JNICALL
1432 JVM_RecvFrom(jint fd, char *buf, int nBytes,
1433 int flags, struct sockaddr *from, int *fromlen);
1435 JNIEXPORT jint JNICALL
1436 JVM_SendTo(jint fd, char *buf, int len,
1437 int flags, struct sockaddr *to, int tolen);
1439 JNIEXPORT jint JNICALL
1440 JVM_SocketAvailable(jint fd, jint *result);
1443 JNIEXPORT jint JNICALL
1444 JVM_GetSockName(jint fd, struct sockaddr *him, int *len);
1446 JNIEXPORT jint JNICALL
1447 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen);
1449 JNIEXPORT jint JNICALL
1450 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen);
1452 JNIEXPORT int JNICALL
1453 JVM_GetHostName(char* name, int namelen);
1455 /*
1456 * The standard printing functions supported by the Java VM. (Should they
1457 * be renamed to JVM_* in the future?
1458 */
1460 /*
1461 * BE CAREFUL! The following functions do not implement the
1462 * full feature set of standard C printf formats.
1463 */
1464 JNIEXPORT int
1465 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1467 JNIEXPORT int
1468 jio_snprintf(char *str, size_t count, const char *fmt, ...);
1470 JNIEXPORT int
1471 jio_fprintf(FILE *, const char *fmt, ...);
1473 JNIEXPORT int
1474 jio_vfprintf(FILE *, const char *fmt, va_list args);
1477 JNIEXPORT void * JNICALL
1478 JVM_RawMonitorCreate(void);
1480 JNIEXPORT void JNICALL
1481 JVM_RawMonitorDestroy(void *mon);
1483 JNIEXPORT jint JNICALL
1484 JVM_RawMonitorEnter(void *mon);
1486 JNIEXPORT void JNICALL
1487 JVM_RawMonitorExit(void *mon);
1489 /*
1490 * java.lang.reflect.Method
1491 */
1492 JNIEXPORT jobject JNICALL
1493 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
1495 /*
1496 * java.lang.reflect.Constructor
1497 */
1498 JNIEXPORT jobject JNICALL
1499 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
1501 /*
1502 * java.lang.management support
1503 */
1504 JNIEXPORT void* JNICALL
1505 JVM_GetManagement(jint version);
1507 /*
1508 * com.sun.tools.attach.VirtualMachine support
1509 *
1510 * Initialize the agent properties with the properties maintained in the VM.
1511 */
1512 JNIEXPORT jobject JNICALL
1513 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
1515 JNIEXPORT jstring JNICALL
1516 JVM_GetTemporaryDirectory(JNIEnv *env);
1518 /* Generics reflection support.
1519 *
1520 * Returns information about the given class's EnclosingMethod
1521 * attribute, if present, or null if the class had no enclosing
1522 * method.
1523 *
1524 * If non-null, the returned array contains three elements. Element 0
1525 * is the java.lang.Class of which the enclosing method is a member,
1526 * and elements 1 and 2 are the java.lang.Strings for the enclosing
1527 * method's name and descriptor, respectively.
1528 */
1529 JNIEXPORT jobjectArray JNICALL
1530 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
1532 /*
1533 * Java thread state support
1534 */
1535 enum {
1536 JAVA_THREAD_STATE_NEW = 0,
1537 JAVA_THREAD_STATE_RUNNABLE = 1,
1538 JAVA_THREAD_STATE_BLOCKED = 2,
1539 JAVA_THREAD_STATE_WAITING = 3,
1540 JAVA_THREAD_STATE_TIMED_WAITING = 4,
1541 JAVA_THREAD_STATE_TERMINATED = 5,
1542 JAVA_THREAD_STATE_COUNT = 6
1543 };
1545 /*
1546 * Returns an array of the threadStatus values representing the
1547 * given Java thread state. Returns NULL if the VM version is
1548 * incompatible with the JDK or doesn't support the given
1549 * Java thread state.
1550 */
1551 JNIEXPORT jintArray JNICALL
1552 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState);
1554 /*
1555 * Returns an array of the substate names representing the
1556 * given Java thread state. Returns NULL if the VM version is
1557 * incompatible with the JDK or the VM doesn't support
1558 * the given Java thread state.
1559 * values must be the jintArray returned from JVM_GetThreadStateValues
1560 * and javaThreadState.
1561 */
1562 JNIEXPORT jobjectArray JNICALL
1563 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values);
1565 /*
1566 * Returns true if the JVM's lookup cache indicates that this class is
1567 * known to NOT exist for the given loader.
1568 */
1569 JNIEXPORT jboolean JNICALL
1570 JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname);
1572 /*
1573 * Returns an array of all URLs that are stored in the JVM's lookup cache
1574 * for the given loader. NULL if the lookup cache is unavailable.
1575 */
1576 JNIEXPORT jobjectArray JNICALL
1577 JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader);
1579 /*
1580 * Returns an array of all URLs that *may* contain the resource_name for the
1581 * given loader. This function returns an integer array, each element
1582 * of which can be used to index into the array returned by
1583 * JVM_GetResourceLookupCacheURLs of the same loader to determine the
1584 * URLs.
1585 */
1586 JNIEXPORT jintArray JNICALL
1587 JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name);
1590 /* =========================================================================
1591 * The following defines a private JVM interface that the JDK can query
1592 * for the JVM version and capabilities. sun.misc.Version defines
1593 * the methods for getting the VM version and its capabilities.
1594 *
1595 * When a new bit is added, the following should be updated to provide
1596 * access to the new capability:
1597 * HS: JVM_GetVersionInfo and Abstract_VM_Version class
1598 * SDK: Version class
1599 *
1600 * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
1601 * JVM to query for the JDK version and capabilities.
1602 *
1603 * When a new bit is added, the following should be updated to provide
1604 * access to the new capability:
1605 * HS: JDK_Version class
1606 * SDK: JDK_GetVersionInfo0
1607 *
1608 * ==========================================================================
1609 */
1610 typedef struct {
1611 /* HotSpot Express VM version string:
1612 * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>]
1613 */
1614 unsigned int jvm_version; /* Consists of major.minor.0.build */
1615 unsigned int update_version : 8; /* 0 in HotSpot Express VM */
1616 unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */
1617 unsigned int reserved1 : 16;
1618 unsigned int reserved2;
1620 /* The following bits represents JVM supports that JDK has dependency on.
1621 * JDK can use these bits to determine which JVM version
1622 * and support it has to maintain runtime compatibility.
1623 *
1624 * When a new bit is added in a minor or update release, make sure
1625 * the new bit is also added in the main/baseline.
1626 */
1627 unsigned int is_attachable : 1;
1628 unsigned int : 31;
1629 unsigned int : 32;
1630 unsigned int : 32;
1631 } jvm_version_info;
1633 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1634 #define JVM_VERSION_MINOR(version) ((version & 0x00FFFF00) >> 8)
1635 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp).
1636 #define JVM_VERSION_MICRO(version) 0
1637 /* Build number is available in all HotSpot Express VM builds.
1638 * It is defined in make/hotspot_version file.
1639 */
1640 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
1642 JNIEXPORT void JNICALL
1643 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
1645 typedef struct {
1646 // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
1647 unsigned int jdk_version; /* Consists of major, minor, micro (n.n.n) */
1648 /* and build number (xx) */
1649 unsigned int update_version : 16; /* Update release version (uu) */
1650 unsigned int special_update_version : 8; /* Special update release version (c)*/
1651 unsigned int reserved1 : 8;
1652 unsigned int reserved2;
1654 /* The following bits represents new JDK supports that VM has dependency on.
1655 * VM implementation can use these bits to determine which JDK version
1656 * and support it has to maintain runtime compatibility.
1657 *
1658 * When a new bit is added in a minor or update release, make sure
1659 * the new bit is also added in the main/baseline.
1660 */
1661 unsigned int thread_park_blocker : 1;
1662 unsigned int post_vm_init_hook_enabled : 1;
1663 unsigned int pending_list_uses_discovered_field : 1;
1664 unsigned int : 29;
1665 unsigned int : 32;
1666 unsigned int : 32;
1667 } jdk_version_info;
1669 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
1670 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
1671 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
1673 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
1674 * It will be zero for internal builds.
1675 */
1676 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
1678 /*
1679 * This is the function JDK_GetVersionInfo0 defined in libjava.so
1680 * that is dynamically looked up by JVM.
1681 */
1682 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
1684 /*
1685 * This structure is used by the launcher to get the default thread
1686 * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
1687 * version of 1.1. As it is not supported otherwise, it has been removed
1688 * from jni.h
1689 */
1690 typedef struct JDK1_1InitArgs {
1691 jint version;
1693 char **properties;
1694 jint checkSource;
1695 jint nativeStackSize;
1696 jint javaStackSize;
1697 jint minHeapSize;
1698 jint maxHeapSize;
1699 jint verifyMode;
1700 char *classpath;
1702 jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
1703 void (JNICALL *exit)(jint code);
1704 void (JNICALL *abort)(void);
1706 jint enableClassGC;
1707 jint enableVerboseGC;
1708 jint disableAsyncGC;
1709 jint verbose;
1710 jboolean debugging;
1711 jint debugPort;
1712 } JDK1_1InitArgs;
1714 #ifdef __cplusplus
1715 } /* extern "C" */
1716 #endif /* __cplusplus */
1718 #endif /* !_JAVASOFT_JVM_H_ */
1720 #endif // SHARE_VM_PRIMS_JVM_H
