src/share/vm/prims/jvm.h

Fri, 16 Aug 2013 13:22:32 +0200

author
stefank
date
Fri, 16 Aug 2013 13:22:32 +0200
changeset 5578
4c84d351cca9
parent 5372
ba9dacff9c9d
child 5849
615d83933195
child 6461
bdd155477289
permissions
-rw-r--r--

8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

     1 /*
     2  * Copyright (c) 1997, 2013, 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_bsd
    39 # include "jvm_bsd.h"
    40 #endif
    42 #ifndef _JAVASOFT_JVM_H_
    43 #define _JAVASOFT_JVM_H_
    45 // HotSpot integration note:
    46 //
    47 // This file and jvm.h used with the JDK are identical,
    48 // except for the three includes removed below
    50 // #include <sys/stat.h>
    51 // #include "jni.h"
    52 // #include "jvm_md.h"
    55 #ifdef __cplusplus
    56 extern "C" {
    57 #endif
    59 /*
    60  * This file contains additional functions exported from the VM.
    61  * These functions are complementary to the standard JNI support.
    62  * There are three parts to this file:
    63  *
    64  * First, this file contains the VM-related functions needed by native
    65  * libraries in the standard Java API. For example, the java.lang.Object
    66  * class needs VM-level functions that wait for and notify monitors.
    67  *
    68  * Second, this file contains the functions and constant definitions
    69  * needed by the byte code verifier and class file format checker.
    70  * These functions allow the verifier and format checker to be written
    71  * in a VM-independent way.
    72  *
    73  * Third, this file contains various I/O and nerwork operations needed
    74  * by the standard Java I/O and network APIs.
    75  */
    77 /*
    78  * Bump the version number when either of the following happens:
    79  *
    80  * 1. There is a change in JVM_* functions.
    81  *
    82  * 2. There is a change in the contract between VM and Java classes.
    83  *    For example, if the VM relies on a new private field in Thread
    84  *    class.
    85  */
    87 #define JVM_INTERFACE_VERSION 4
    89 JNIEXPORT jobjectArray JNICALL
    90 JVM_GetMethodParameters(JNIEnv *env, jobject method);
    92 JNIEXPORT jint JNICALL
    93 JVM_GetInterfaceVersion(void);
    95 /*************************************************************************
    96  PART 1: Functions for Native Libraries
    97  ************************************************************************/
    98 /*
    99  * java.lang.Object
   100  */
   101 JNIEXPORT jint JNICALL
   102 JVM_IHashCode(JNIEnv *env, jobject obj);
   104 JNIEXPORT void JNICALL
   105 JVM_MonitorWait(JNIEnv *env, jobject obj, jlong ms);
   107 JNIEXPORT void JNICALL
   108 JVM_MonitorNotify(JNIEnv *env, jobject obj);
   110 JNIEXPORT void JNICALL
   111 JVM_MonitorNotifyAll(JNIEnv *env, jobject obj);
   113 JNIEXPORT jobject JNICALL
   114 JVM_Clone(JNIEnv *env, jobject obj);
   116 /*
   117  * java.lang.String
   118  */
   119 JNIEXPORT jstring JNICALL
   120 JVM_InternString(JNIEnv *env, jstring str);
   122 /*
   123  * java.lang.System
   124  */
   125 JNIEXPORT jlong JNICALL
   126 JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored);
   128 JNIEXPORT jlong JNICALL
   129 JVM_NanoTime(JNIEnv *env, jclass ignored);
   131 JNIEXPORT void JNICALL
   132 JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
   133               jobject dst, jint dst_pos, jint length);
   135 JNIEXPORT jobject JNICALL
   136 JVM_InitProperties(JNIEnv *env, jobject p);
   138 /*
   139  * java.io.File
   140  */
   141 JNIEXPORT void JNICALL
   142 JVM_OnExit(void (*func)(void));
   144 /*
   145  * java.lang.Runtime
   146  */
   147 JNIEXPORT void JNICALL
   148 JVM_Exit(jint code);
   150 JNIEXPORT void JNICALL
   151 JVM_Halt(jint code);
   153 JNIEXPORT void JNICALL
   154 JVM_GC(void);
   156 /* Returns the number of real-time milliseconds that have elapsed since the
   157  * least-recently-inspected heap object was last inspected by the garbage
   158  * collector.
   159  *
   160  * For simple stop-the-world collectors this value is just the time
   161  * since the most recent collection.  For generational collectors it is the
   162  * time since the oldest generation was most recently collected.  Other
   163  * collectors are free to return a pessimistic estimate of the elapsed time, or
   164  * simply the time since the last full collection was performed.
   165  *
   166  * Note that in the presence of reference objects, a given object that is no
   167  * longer strongly reachable may have to be inspected multiple times before it
   168  * can be reclaimed.
   169  */
   170 JNIEXPORT jlong JNICALL
   171 JVM_MaxObjectInspectionAge(void);
   173 JNIEXPORT void JNICALL
   174 JVM_TraceInstructions(jboolean on);
   176 JNIEXPORT void JNICALL
   177 JVM_TraceMethodCalls(jboolean on);
   179 JNIEXPORT jlong JNICALL
   180 JVM_TotalMemory(void);
   182 JNIEXPORT jlong JNICALL
   183 JVM_FreeMemory(void);
   185 JNIEXPORT jlong JNICALL
   186 JVM_MaxMemory(void);
   188 JNIEXPORT jint JNICALL
   189 JVM_ActiveProcessorCount(void);
   191 JNIEXPORT void * JNICALL
   192 JVM_LoadLibrary(const char *name);
   194 JNIEXPORT void JNICALL
   195 JVM_UnloadLibrary(void * handle);
   197 JNIEXPORT void * JNICALL
   198 JVM_FindLibraryEntry(void *handle, const char *name);
   200 JNIEXPORT jboolean JNICALL
   201 JVM_IsSupportedJNIVersion(jint version);
   203 /*
   204  * java.lang.Float and java.lang.Double
   205  */
   206 JNIEXPORT jboolean JNICALL
   207 JVM_IsNaN(jdouble d);
   209 /*
   210  * java.lang.Throwable
   211  */
   212 JNIEXPORT void JNICALL
   213 JVM_FillInStackTrace(JNIEnv *env, jobject throwable);
   215 JNIEXPORT jint JNICALL
   216 JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable);
   218 JNIEXPORT jobject JNICALL
   219 JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index);
   221 /*
   222  * java.lang.Compiler
   223  */
   224 JNIEXPORT void JNICALL
   225 JVM_InitializeCompiler (JNIEnv *env, jclass compCls);
   227 JNIEXPORT jboolean JNICALL
   228 JVM_IsSilentCompiler(JNIEnv *env, jclass compCls);
   230 JNIEXPORT jboolean JNICALL
   231 JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls);
   233 JNIEXPORT jboolean JNICALL
   234 JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname);
   236 JNIEXPORT jobject JNICALL
   237 JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg);
   239 JNIEXPORT void JNICALL
   240 JVM_EnableCompiler(JNIEnv *env, jclass compCls);
   242 JNIEXPORT void JNICALL
   243 JVM_DisableCompiler(JNIEnv *env, jclass compCls);
   245 /*
   246  * java.lang.Thread
   247  */
   248 JNIEXPORT void JNICALL
   249 JVM_StartThread(JNIEnv *env, jobject thread);
   251 JNIEXPORT void JNICALL
   252 JVM_StopThread(JNIEnv *env, jobject thread, jobject exception);
   254 JNIEXPORT jboolean JNICALL
   255 JVM_IsThreadAlive(JNIEnv *env, jobject thread);
   257 JNIEXPORT void JNICALL
   258 JVM_SuspendThread(JNIEnv *env, jobject thread);
   260 JNIEXPORT void JNICALL
   261 JVM_ResumeThread(JNIEnv *env, jobject thread);
   263 JNIEXPORT void JNICALL
   264 JVM_SetThreadPriority(JNIEnv *env, jobject thread, jint prio);
   266 JNIEXPORT void JNICALL
   267 JVM_Yield(JNIEnv *env, jclass threadClass);
   269 JNIEXPORT void JNICALL
   270 JVM_Sleep(JNIEnv *env, jclass threadClass, jlong millis);
   272 JNIEXPORT jobject JNICALL
   273 JVM_CurrentThread(JNIEnv *env, jclass threadClass);
   275 JNIEXPORT jint JNICALL
   276 JVM_CountStackFrames(JNIEnv *env, jobject thread);
   278 JNIEXPORT void JNICALL
   279 JVM_Interrupt(JNIEnv *env, jobject thread);
   281 JNIEXPORT jboolean JNICALL
   282 JVM_IsInterrupted(JNIEnv *env, jobject thread, jboolean clearInterrupted);
   284 JNIEXPORT jboolean JNICALL
   285 JVM_HoldsLock(JNIEnv *env, jclass threadClass, jobject obj);
   287 JNIEXPORT void JNICALL
   288 JVM_DumpAllStacks(JNIEnv *env, jclass unused);
   290 JNIEXPORT jobjectArray JNICALL
   291 JVM_GetAllThreads(JNIEnv *env, jclass dummy);
   293 JNIEXPORT void JNICALL
   294 JVM_SetNativeThreadName(JNIEnv *env, jobject jthread, jstring name);
   296 /* getStackTrace() and getAllStackTraces() method */
   297 JNIEXPORT jobjectArray JNICALL
   298 JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads);
   300 /*
   301  * java.lang.SecurityManager
   302  */
   303 JNIEXPORT jclass JNICALL
   304 JVM_CurrentLoadedClass(JNIEnv *env);
   306 JNIEXPORT jobject JNICALL
   307 JVM_CurrentClassLoader(JNIEnv *env);
   309 JNIEXPORT jobjectArray JNICALL
   310 JVM_GetClassContext(JNIEnv *env);
   312 JNIEXPORT jint JNICALL
   313 JVM_ClassDepth(JNIEnv *env, jstring name);
   315 JNIEXPORT jint JNICALL
   316 JVM_ClassLoaderDepth(JNIEnv *env);
   318 /*
   319  * java.lang.Package
   320  */
   321 JNIEXPORT jstring JNICALL
   322 JVM_GetSystemPackage(JNIEnv *env, jstring name);
   324 JNIEXPORT jobjectArray JNICALL
   325 JVM_GetSystemPackages(JNIEnv *env);
   327 /*
   328  * java.io.ObjectInputStream
   329  */
   330 JNIEXPORT jobject JNICALL
   331 JVM_AllocateNewObject(JNIEnv *env, jobject obj, jclass currClass,
   332                       jclass initClass);
   334 JNIEXPORT jobject JNICALL
   335 JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass,
   336                      jint length);
   338 JNIEXPORT jobject JNICALL
   339 JVM_LatestUserDefinedLoader(JNIEnv *env);
   341 /*
   342  * This function has been deprecated and should not be considered
   343  * part of the specified JVM interface.
   344  */
   345 JNIEXPORT jclass JNICALL
   346 JVM_LoadClass0(JNIEnv *env, jobject obj, jclass currClass,
   347                jstring currClassName);
   349 /*
   350  * java.lang.reflect.Array
   351  */
   352 JNIEXPORT jint JNICALL
   353 JVM_GetArrayLength(JNIEnv *env, jobject arr);
   355 JNIEXPORT jobject JNICALL
   356 JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index);
   358 JNIEXPORT jvalue JNICALL
   359 JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode);
   361 JNIEXPORT void JNICALL
   362 JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val);
   364 JNIEXPORT void JNICALL
   365 JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v,
   366                              unsigned char vCode);
   368 JNIEXPORT jobject JNICALL
   369 JVM_NewArray(JNIEnv *env, jclass eltClass, jint length);
   371 JNIEXPORT jobject JNICALL
   372 JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
   374 /*
   375  * java.lang.Class and java.lang.ClassLoader
   376  */
   377 /*
   378  * Returns the class in which the code invoking the native method
   379  * belongs.
   380  *
   381  * Note that in JDK 1.1, native methods did not create a frame.
   382  * In 1.2, they do. Therefore native methods like Class.forName
   383  * can no longer look at the current frame for the caller class.
   384  */
   385 JNIEXPORT jclass JNICALL
   386 JVM_GetCallerClass(JNIEnv *env, int n);
   388 /*
   389  * Find primitive classes
   390  * utf: class name
   391  */
   392 JNIEXPORT jclass JNICALL
   393 JVM_FindPrimitiveClass(JNIEnv *env, const char *utf);
   395 /*
   396  * Link the class
   397  */
   398 JNIEXPORT void JNICALL
   399 JVM_ResolveClass(JNIEnv *env, jclass cls);
   401 /*
   402  * Find a class from a given class loader. Throw ClassNotFoundException
   403  * or NoClassDefFoundError depending on the value of the last
   404  * argument.
   405  */
   406 JNIEXPORT jclass JNICALL
   407 JVM_FindClassFromClassLoader(JNIEnv *env, const char *name, jboolean init,
   408                              jobject loader, jboolean throwError);
   410 /*
   411  * Find a class from a boot class loader. Returns NULL if class not found.
   412  */
   413 JNIEXPORT jclass JNICALL
   414 JVM_FindClassFromBootLoader(JNIEnv *env, const char *name);
   416 /*
   417  * Find a class from a given class.
   418  */
   419 JNIEXPORT jclass JNICALL
   420 JVM_FindClassFromClass(JNIEnv *env, const char *name, jboolean init,
   421                              jclass from);
   423 /* Find a loaded class cached by the VM */
   424 JNIEXPORT jclass JNICALL
   425 JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name);
   427 /* Define a class */
   428 JNIEXPORT jclass JNICALL
   429 JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf,
   430                 jsize len, jobject pd);
   432 /* Define a class with a source (added in JDK1.5) */
   433 JNIEXPORT jclass JNICALL
   434 JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader,
   435                           const jbyte *buf, jsize len, jobject pd,
   436                           const char *source);
   438 /* Define a class with a source with conditional verification (added HSX 14)
   439  * -Xverify:all will verify anyway, -Xverify:none will not verify,
   440  * -Xverify:remote (default) will obey this conditional
   441  * i.e. true = should_verify_class
   442  */
   443 JNIEXPORT jclass JNICALL
   444 JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name,
   445                               jobject loader, const jbyte *buf,
   446                               jsize len, jobject pd, const char *source,
   447                               jboolean verify);
   449 /*
   450  * Reflection support functions
   451  */
   453 JNIEXPORT jstring JNICALL
   454 JVM_GetClassName(JNIEnv *env, jclass cls);
   456 JNIEXPORT jobjectArray JNICALL
   457 JVM_GetClassInterfaces(JNIEnv *env, jclass cls);
   459 JNIEXPORT jobject JNICALL
   460 JVM_GetClassLoader(JNIEnv *env, jclass cls);
   462 JNIEXPORT jboolean JNICALL
   463 JVM_IsInterface(JNIEnv *env, jclass cls);
   465 JNIEXPORT jobjectArray JNICALL
   466 JVM_GetClassSigners(JNIEnv *env, jclass cls);
   468 JNIEXPORT void JNICALL
   469 JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers);
   471 JNIEXPORT jobject JNICALL
   472 JVM_GetProtectionDomain(JNIEnv *env, jclass cls);
   474 JNIEXPORT jboolean JNICALL
   475 JVM_IsArrayClass(JNIEnv *env, jclass cls);
   477 JNIEXPORT jboolean JNICALL
   478 JVM_IsPrimitiveClass(JNIEnv *env, jclass cls);
   480 JNIEXPORT jclass JNICALL
   481 JVM_GetComponentType(JNIEnv *env, jclass cls);
   483 JNIEXPORT jint JNICALL
   484 JVM_GetClassModifiers(JNIEnv *env, jclass cls);
   486 JNIEXPORT jobjectArray JNICALL
   487 JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass);
   489 JNIEXPORT jclass JNICALL
   490 JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass);
   492 /* Generics support (JDK 1.5) */
   493 JNIEXPORT jstring JNICALL
   494 JVM_GetClassSignature(JNIEnv *env, jclass cls);
   496 /* Annotations support (JDK 1.5) */
   497 JNIEXPORT jbyteArray JNICALL
   498 JVM_GetClassAnnotations(JNIEnv *env, jclass cls);
   500 /* Annotations support (JDK 1.6) */
   502 // field is a handle to a java.lang.reflect.Field object
   503 JNIEXPORT jbyteArray JNICALL
   504 JVM_GetFieldAnnotations(JNIEnv *env, jobject field);
   506 // method is a handle to a java.lang.reflect.Method object
   507 JNIEXPORT jbyteArray JNICALL
   508 JVM_GetMethodAnnotations(JNIEnv *env, jobject method);
   510 // method is a handle to a java.lang.reflect.Method object
   511 JNIEXPORT jbyteArray JNICALL
   512 JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method);
   514 // method is a handle to a java.lang.reflect.Method object
   515 JNIEXPORT jbyteArray JNICALL
   516 JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method);
   518 /* Type use annotations support (JDK 1.8) */
   520 JNIEXPORT jbyteArray JNICALL
   521 JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls);
   523 // field is a handle to a java.lang.reflect.Field object
   524 JNIEXPORT jbyteArray JNICALL
   525 JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field);
   527 // method is a handle to a java.lang.reflect.Method object
   528 JNIEXPORT jbyteArray JNICALL
   529 JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method);
   531 /*
   532  * New (JDK 1.4) reflection implementation
   533  */
   535 JNIEXPORT jobjectArray JNICALL
   536 JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly);
   538 JNIEXPORT jobjectArray JNICALL
   539 JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly);
   541 JNIEXPORT jobjectArray JNICALL
   542 JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly);
   544 /* Differs from JVM_GetClassModifiers in treatment of inner classes.
   545    This returns the access flags for the class as specified in the
   546    class file rather than searching the InnerClasses attribute (if
   547    present) to find the source-level access flags. Only the values of
   548    the low 13 bits (i.e., a mask of 0x1FFF) are guaranteed to be
   549    valid. */
   550 JNIEXPORT jint JNICALL
   551 JVM_GetClassAccessFlags(JNIEnv *env, jclass cls);
   553 /*
   554  * Constant pool access; currently used to implement reflective access to annotations (JDK 1.5)
   555  */
   557 JNIEXPORT jobject JNICALL
   558 JVM_GetClassConstantPool(JNIEnv *env, jclass cls);
   560 JNIEXPORT jint JNICALL JVM_ConstantPoolGetSize
   561 (JNIEnv *env, jobject obj, jobject unused);
   563 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAt
   564 (JNIEnv *env, jobject obj, jobject unused, jint index);
   566 JNIEXPORT jclass JNICALL JVM_ConstantPoolGetClassAtIfLoaded
   567 (JNIEnv *env, jobject obj, jobject unused, jint index);
   569 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAt
   570 (JNIEnv *env, jobject obj, jobject unused, jint index);
   572 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetMethodAtIfLoaded
   573 (JNIEnv *env, jobject obj, jobject unused, jint index);
   575 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAt
   576 (JNIEnv *env, jobject obj, jobject unused, jint index);
   578 JNIEXPORT jobject JNICALL JVM_ConstantPoolGetFieldAtIfLoaded
   579 (JNIEnv *env, jobject obj, jobject unused, jint index);
   581 JNIEXPORT jobjectArray JNICALL JVM_ConstantPoolGetMemberRefInfoAt
   582 (JNIEnv *env, jobject obj, jobject unused, jint index);
   584 JNIEXPORT jint JNICALL JVM_ConstantPoolGetIntAt
   585 (JNIEnv *env, jobject obj, jobject unused, jint index);
   587 JNIEXPORT jlong JNICALL JVM_ConstantPoolGetLongAt
   588 (JNIEnv *env, jobject obj, jobject unused, jint index);
   590 JNIEXPORT jfloat JNICALL JVM_ConstantPoolGetFloatAt
   591 (JNIEnv *env, jobject obj, jobject unused, jint index);
   593 JNIEXPORT jdouble JNICALL JVM_ConstantPoolGetDoubleAt
   594 (JNIEnv *env, jobject obj, jobject unused, jint index);
   596 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetStringAt
   597 (JNIEnv *env, jobject obj, jobject unused, jint index);
   599 JNIEXPORT jstring JNICALL JVM_ConstantPoolGetUTF8At
   600 (JNIEnv *env, jobject obj, jobject unused, jint index);
   602 /*
   603  * java.security.*
   604  */
   606 JNIEXPORT jobject JNICALL
   607 JVM_DoPrivileged(JNIEnv *env, jclass cls,
   608                  jobject action, jobject context, jboolean wrapException);
   610 JNIEXPORT jobject JNICALL
   611 JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls);
   613 JNIEXPORT jobject JNICALL
   614 JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls);
   616 /*
   617  * Signal support, used to implement the shutdown sequence.  Every VM must
   618  * support JVM_SIGINT and JVM_SIGTERM, raising the former for user interrupts
   619  * (^C) and the latter for external termination (kill, system shutdown, etc.).
   620  * Other platform-dependent signal values may also be supported.
   621  */
   623 JNIEXPORT void * JNICALL
   624 JVM_RegisterSignal(jint sig, void *handler);
   626 JNIEXPORT jboolean JNICALL
   627 JVM_RaiseSignal(jint sig);
   629 JNIEXPORT jint JNICALL
   630 JVM_FindSignal(const char *name);
   632 /*
   633  * Retrieve the assertion directives for the specified class.
   634  */
   635 JNIEXPORT jboolean JNICALL
   636 JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls);
   638 /*
   639  * Retrieve the assertion directives from the VM.
   640  */
   641 JNIEXPORT jobject JNICALL
   642 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
   644 /*
   645  * java.util.concurrent.atomic.AtomicLong
   646  */
   647 JNIEXPORT jboolean JNICALL
   648 JVM_SupportsCX8(void);
   650 JNIEXPORT jboolean JNICALL
   651 JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal);
   653 /*
   654  * com.sun.dtrace.jsdt support
   655  */
   657 #define JVM_TRACING_DTRACE_VERSION 1
   659 /*
   660  * Structure to pass one probe description to JVM.
   661  *
   662  * The VM will overwrite the definition of the referenced method with
   663  * code that will fire the probe.
   664  */
   665 typedef struct {
   666     jmethodID method;
   667     jstring   function;
   668     jstring   name;
   669     void*     reserved[4];     // for future use
   670 } JVM_DTraceProbe;
   672 /**
   673  * Encapsulates the stability ratings for a DTrace provider field
   674  */
   675 typedef struct {
   676     jint nameStability;
   677     jint dataStability;
   678     jint dependencyClass;
   679 } JVM_DTraceInterfaceAttributes;
   681 /*
   682  * Structure to pass one provider description to JVM
   683  */
   684 typedef struct {
   685     jstring                       name;
   686     JVM_DTraceProbe*              probes;
   687     jint                          probe_count;
   688     JVM_DTraceInterfaceAttributes providerAttributes;
   689     JVM_DTraceInterfaceAttributes moduleAttributes;
   690     JVM_DTraceInterfaceAttributes functionAttributes;
   691     JVM_DTraceInterfaceAttributes nameAttributes;
   692     JVM_DTraceInterfaceAttributes argsAttributes;
   693     void*                         reserved[4]; // for future use
   694 } JVM_DTraceProvider;
   696 /*
   697  * Get the version number the JVM was built with
   698  */
   699 JNIEXPORT jint JNICALL
   700 JVM_DTraceGetVersion(JNIEnv* env);
   702 /*
   703  * Register new probe with given signature, return global handle
   704  *
   705  * The version passed in is the version that the library code was
   706  * built with.
   707  */
   708 JNIEXPORT jlong JNICALL
   709 JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
   710   jint providers_count, JVM_DTraceProvider* providers);
   712 /*
   713  * Check JSDT probe
   714  */
   715 JNIEXPORT jboolean JNICALL
   716 JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
   718 /*
   719  * Destroy custom DOF
   720  */
   721 JNIEXPORT void JNICALL
   722 JVM_DTraceDispose(JNIEnv* env, jlong handle);
   724 /*
   725  * Check to see if DTrace is supported by OS
   726  */
   727 JNIEXPORT jboolean JNICALL
   728 JVM_DTraceIsSupported(JNIEnv* env);
   730 /*************************************************************************
   731  PART 2: Support for the Verifier and Class File Format Checker
   732  ************************************************************************/
   733 /*
   734  * Return the class name in UTF format. The result is valid
   735  * until JVM_ReleaseUTf is called.
   736  *
   737  * The caller must treat the string as a constant and not modify it
   738  * in any way.
   739  */
   740 JNIEXPORT const char * JNICALL
   741 JVM_GetClassNameUTF(JNIEnv *env, jclass cb);
   743 /*
   744  * Returns the constant pool types in the buffer provided by "types."
   745  */
   746 JNIEXPORT void JNICALL
   747 JVM_GetClassCPTypes(JNIEnv *env, jclass cb, unsigned char *types);
   749 /*
   750  * Returns the number of Constant Pool entries.
   751  */
   752 JNIEXPORT jint JNICALL
   753 JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cb);
   755 /*
   756  * Returns the number of *declared* fields or methods.
   757  */
   758 JNIEXPORT jint JNICALL
   759 JVM_GetClassFieldsCount(JNIEnv *env, jclass cb);
   761 JNIEXPORT jint JNICALL
   762 JVM_GetClassMethodsCount(JNIEnv *env, jclass cb);
   764 /*
   765  * Returns the CP indexes of exceptions raised by a given method.
   766  * Places the result in the given buffer.
   767  *
   768  * The method is identified by method_index.
   769  */
   770 JNIEXPORT void JNICALL
   771 JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cb, jint method_index,
   772                                 unsigned short *exceptions);
   773 /*
   774  * Returns the number of exceptions raised by a given method.
   775  * The method is identified by method_index.
   776  */
   777 JNIEXPORT jint JNICALL
   778 JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cb, jint method_index);
   780 /*
   781  * Returns the byte code sequence of a given method.
   782  * Places the result in the given buffer.
   783  *
   784  * The method is identified by method_index.
   785  */
   786 JNIEXPORT void JNICALL
   787 JVM_GetMethodIxByteCode(JNIEnv *env, jclass cb, jint method_index,
   788                         unsigned char *code);
   790 /*
   791  * Returns the length of the byte code sequence of a given method.
   792  * The method is identified by method_index.
   793  */
   794 JNIEXPORT jint JNICALL
   795 JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cb, jint method_index);
   797 /*
   798  * A structure used to a capture exception table entry in a Java method.
   799  */
   800 typedef struct {
   801     jint start_pc;
   802     jint end_pc;
   803     jint handler_pc;
   804     jint catchType;
   805 } JVM_ExceptionTableEntryType;
   807 /*
   808  * Returns the exception table entry at entry_index 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_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cb, jint method_index,
   815                                    jint entry_index,
   816                                    JVM_ExceptionTableEntryType *entry);
   818 /*
   819  * Returns the length of the exception table of a given method.
   820  * The method is identified by method_index.
   821  */
   822 JNIEXPORT jint JNICALL
   823 JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cb, int index);
   825 /*
   826  * Returns the modifiers of a given field.
   827  * The field is identified by field_index.
   828  */
   829 JNIEXPORT jint JNICALL
   830 JVM_GetFieldIxModifiers(JNIEnv *env, jclass cb, int index);
   832 /*
   833  * Returns the modifiers of a given method.
   834  * The method is identified by method_index.
   835  */
   836 JNIEXPORT jint JNICALL
   837 JVM_GetMethodIxModifiers(JNIEnv *env, jclass cb, int index);
   839 /*
   840  * Returns the number of local variables of a given method.
   841  * The method is identified by method_index.
   842  */
   843 JNIEXPORT jint JNICALL
   844 JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cb, int index);
   846 /*
   847  * Returns the number of arguments (including this pointer) of a given method.
   848  * The method is identified by method_index.
   849  */
   850 JNIEXPORT jint JNICALL
   851 JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cb, int index);
   853 /*
   854  * Returns the maximum amount of stack (in words) used by a given method.
   855  * The method is identified by method_index.
   856  */
   857 JNIEXPORT jint JNICALL
   858 JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cb, int index);
   860 /*
   861  * Is a given method a constructor.
   862  * The method is identified by method_index.
   863  */
   864 JNIEXPORT jboolean JNICALL
   865 JVM_IsConstructorIx(JNIEnv *env, jclass cb, int index);
   867 /*
   868  * Is the given method generated by the VM.
   869  * The method is identified by method_index.
   870  */
   871 JNIEXPORT jboolean JNICALL
   872 JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cb, int index);
   874 /*
   875  * Returns the name of a given method in UTF format.
   876  * The result remains valid until JVM_ReleaseUTF is called.
   877  *
   878  * The caller must treat the string as a constant and not modify it
   879  * in any way.
   880  */
   881 JNIEXPORT const char * JNICALL
   882 JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cb, jint index);
   884 /*
   885  * Returns the signature of a given method in UTF format.
   886  * The result remains valid until JVM_ReleaseUTF is called.
   887  *
   888  * The caller must treat the string as a constant and not modify it
   889  * in any way.
   890  */
   891 JNIEXPORT const char * JNICALL
   892 JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cb, jint index);
   894 /*
   895  * Returns the name of the field refered to at a given constant pool
   896  * index.
   897  *
   898  * The result is in UTF format and remains valid until JVM_ReleaseUTF
   899  * is called.
   900  *
   901  * The caller must treat the string as a constant and not modify it
   902  * in any way.
   903  */
   904 JNIEXPORT const char * JNICALL
   905 JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cb, jint index);
   907 /*
   908  * Returns the name of the method refered to at a given constant pool
   909  * index.
   910  *
   911  * The result is in UTF format and remains valid until JVM_ReleaseUTF
   912  * is called.
   913  *
   914  * The caller must treat the string as a constant and not modify it
   915  * in any way.
   916  */
   917 JNIEXPORT const char * JNICALL
   918 JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cb, jint index);
   920 /*
   921  * Returns the signature of the method refered to at a given constant pool
   922  * index.
   923  *
   924  * The result is in UTF format and remains valid until JVM_ReleaseUTF
   925  * is called.
   926  *
   927  * The caller must treat the string as a constant and not modify it
   928  * in any way.
   929  */
   930 JNIEXPORT const char * JNICALL
   931 JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cb, jint index);
   933 /*
   934  * Returns the signature of the field refered to at a given constant pool
   935  * index.
   936  *
   937  * The result is in UTF format and remains valid until JVM_ReleaseUTF
   938  * is called.
   939  *
   940  * The caller must treat the string as a constant and not modify it
   941  * in any way.
   942  */
   943 JNIEXPORT const char * JNICALL
   944 JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cb, jint index);
   946 /*
   947  * Returns the class name refered to at a given constant pool index.
   948  *
   949  * The result is in UTF format and remains valid until JVM_ReleaseUTF
   950  * is called.
   951  *
   952  * The caller must treat the string as a constant and not modify it
   953  * in any way.
   954  */
   955 JNIEXPORT const char * JNICALL
   956 JVM_GetCPClassNameUTF(JNIEnv *env, jclass cb, jint index);
   958 /*
   959  * Returns the class name refered to at a given constant pool index.
   960  *
   961  * The constant pool entry must refer to a CONSTANT_Fieldref.
   962  *
   963  * The result is in UTF format and remains valid until JVM_ReleaseUTF
   964  * is called.
   965  *
   966  * The caller must treat the string as a constant and not modify it
   967  * in any way.
   968  */
   969 JNIEXPORT const char * JNICALL
   970 JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cb, jint index);
   972 /*
   973  * Returns the class name refered to at a given constant pool index.
   974  *
   975  * The constant pool entry must refer to CONSTANT_Methodref or
   976  * CONSTANT_InterfaceMethodref.
   977  *
   978  * The result is in UTF format and remains valid until JVM_ReleaseUTF
   979  * is called.
   980  *
   981  * The caller must treat the string as a constant and not modify it
   982  * in any way.
   983  */
   984 JNIEXPORT const char * JNICALL
   985 JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cb, jint index);
   987 /*
   988  * Returns the modifiers of a field in calledClass. The field is
   989  * referred to in class cb at constant pool entry index.
   990  *
   991  * The caller must treat the string as a constant and not modify it
   992  * in any way.
   993  *
   994  * Returns -1 if the field does not exist in calledClass.
   995  */
   996 JNIEXPORT jint JNICALL
   997 JVM_GetCPFieldModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
   999 /*
  1000  * Returns the modifiers of a method in calledClass. The method is
  1001  * referred to in class cb at constant pool entry index.
  1003  * Returns -1 if the method does not exist in calledClass.
  1004  */
  1005 JNIEXPORT jint JNICALL
  1006 JVM_GetCPMethodModifiers(JNIEnv *env, jclass cb, int index, jclass calledClass);
  1008 /*
  1009  * Releases the UTF string obtained from the VM.
  1010  */
  1011 JNIEXPORT void JNICALL
  1012 JVM_ReleaseUTF(const char *utf);
  1014 /*
  1015  * Compare if two classes are in the same package.
  1016  */
  1017 JNIEXPORT jboolean JNICALL
  1018 JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2);
  1020 /* Constants in class files */
  1022 #define JVM_ACC_PUBLIC        0x0001  /* visible to everyone */
  1023 #define JVM_ACC_PRIVATE       0x0002  /* visible only to the defining class */
  1024 #define JVM_ACC_PROTECTED     0x0004  /* visible to subclasses */
  1025 #define JVM_ACC_STATIC        0x0008  /* instance variable is static */
  1026 #define JVM_ACC_FINAL         0x0010  /* no further subclassing, overriding */
  1027 #define JVM_ACC_SYNCHRONIZED  0x0020  /* wrap method call in monitor lock */
  1028 #define JVM_ACC_SUPER         0x0020  /* funky handling of invokespecial */
  1029 #define JVM_ACC_VOLATILE      0x0040  /* can not cache in registers */
  1030 #define JVM_ACC_BRIDGE        0x0040  /* bridge method generated by compiler */
  1031 #define JVM_ACC_TRANSIENT     0x0080  /* not persistent */
  1032 #define JVM_ACC_VARARGS       0x0080  /* method declared with variable number of args */
  1033 #define JVM_ACC_NATIVE        0x0100  /* implemented in C */
  1034 #define JVM_ACC_INTERFACE     0x0200  /* class is an interface */
  1035 #define JVM_ACC_ABSTRACT      0x0400  /* no definition provided */
  1036 #define JVM_ACC_STRICT        0x0800  /* strict floating point */
  1037 #define JVM_ACC_SYNTHETIC     0x1000  /* compiler-generated class, method or field */
  1038 #define JVM_ACC_ANNOTATION    0x2000  /* annotation type */
  1039 #define JVM_ACC_ENUM          0x4000  /* field is declared as element of enum */
  1041 #define JVM_ACC_PUBLIC_BIT        0
  1042 #define JVM_ACC_PRIVATE_BIT       1
  1043 #define JVM_ACC_PROTECTED_BIT     2
  1044 #define JVM_ACC_STATIC_BIT        3
  1045 #define JVM_ACC_FINAL_BIT         4
  1046 #define JVM_ACC_SYNCHRONIZED_BIT  5
  1047 #define JVM_ACC_SUPER_BIT         5
  1048 #define JVM_ACC_VOLATILE_BIT      6
  1049 #define JVM_ACC_BRIDGE_BIT        6
  1050 #define JVM_ACC_TRANSIENT_BIT     7
  1051 #define JVM_ACC_VARARGS_BIT       7
  1052 #define JVM_ACC_NATIVE_BIT        8
  1053 #define JVM_ACC_INTERFACE_BIT     9
  1054 #define JVM_ACC_ABSTRACT_BIT      10
  1055 #define JVM_ACC_STRICT_BIT        11
  1056 #define JVM_ACC_SYNTHETIC_BIT     12
  1057 #define JVM_ACC_ANNOTATION_BIT    13
  1058 #define JVM_ACC_ENUM_BIT          14
  1060 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
  1061 enum {
  1062     JVM_CONSTANT_Utf8 = 1,
  1063     JVM_CONSTANT_Unicode,               /* unused */
  1064     JVM_CONSTANT_Integer,
  1065     JVM_CONSTANT_Float,
  1066     JVM_CONSTANT_Long,
  1067     JVM_CONSTANT_Double,
  1068     JVM_CONSTANT_Class,
  1069     JVM_CONSTANT_String,
  1070     JVM_CONSTANT_Fieldref,
  1071     JVM_CONSTANT_Methodref,
  1072     JVM_CONSTANT_InterfaceMethodref,
  1073     JVM_CONSTANT_NameAndType,
  1074     JVM_CONSTANT_MethodHandle           = 15,  // JSR 292
  1075     JVM_CONSTANT_MethodType             = 16,  // JSR 292
  1076     //JVM_CONSTANT_(unused)             = 17,  // JSR 292 early drafts only
  1077     JVM_CONSTANT_InvokeDynamic          = 18,  // JSR 292
  1078     JVM_CONSTANT_ExternalMax            = 18   // Last tag found in classfiles
  1079 };
  1081 /* JVM_CONSTANT_MethodHandle subtypes */
  1082 enum {
  1083     JVM_REF_getField                = 1,
  1084     JVM_REF_getStatic               = 2,
  1085     JVM_REF_putField                = 3,
  1086     JVM_REF_putStatic               = 4,
  1087     JVM_REF_invokeVirtual           = 5,
  1088     JVM_REF_invokeStatic            = 6,
  1089     JVM_REF_invokeSpecial           = 7,
  1090     JVM_REF_newInvokeSpecial        = 8,
  1091     JVM_REF_invokeInterface         = 9
  1092 };
  1094 /* Used in the newarray instruction. */
  1096 #define JVM_T_BOOLEAN 4
  1097 #define JVM_T_CHAR    5
  1098 #define JVM_T_FLOAT   6
  1099 #define JVM_T_DOUBLE  7
  1100 #define JVM_T_BYTE    8
  1101 #define JVM_T_SHORT   9
  1102 #define JVM_T_INT    10
  1103 #define JVM_T_LONG   11
  1105 /* JVM method signatures */
  1107 #define JVM_SIGNATURE_ARRAY             '['
  1108 #define JVM_SIGNATURE_BYTE              'B'
  1109 #define JVM_SIGNATURE_CHAR              'C'
  1110 #define JVM_SIGNATURE_CLASS             'L'
  1111 #define JVM_SIGNATURE_ENDCLASS          ';'
  1112 #define JVM_SIGNATURE_ENUM              'E'
  1113 #define JVM_SIGNATURE_FLOAT             'F'
  1114 #define JVM_SIGNATURE_DOUBLE            'D'
  1115 #define JVM_SIGNATURE_FUNC              '('
  1116 #define JVM_SIGNATURE_ENDFUNC           ')'
  1117 #define JVM_SIGNATURE_INT               'I'
  1118 #define JVM_SIGNATURE_LONG              'J'
  1119 #define JVM_SIGNATURE_SHORT             'S'
  1120 #define JVM_SIGNATURE_VOID              'V'
  1121 #define JVM_SIGNATURE_BOOLEAN           'Z'
  1123 /*
  1124  * A function defined by the byte-code verifier and called by the VM.
  1125  * This is not a function implemented in the VM.
  1127  * Returns JNI_FALSE if verification fails. A detailed error message
  1128  * will be places in msg_buf, whose length is specified by buf_len.
  1129  */
  1130 typedef jboolean (*verifier_fn_t)(JNIEnv *env,
  1131                                   jclass cb,
  1132                                   char * msg_buf,
  1133                                   jint buf_len);
  1136 /*
  1137  * Support for a VM-independent class format checker.
  1138  */
  1139 typedef struct {
  1140     unsigned long code;    /* byte code */
  1141     unsigned long excs;    /* exceptions */
  1142     unsigned long etab;    /* catch table */
  1143     unsigned long lnum;    /* line number */
  1144     unsigned long lvar;    /* local vars */
  1145 } method_size_info;
  1147 typedef struct {
  1148     unsigned int constants;    /* constant pool */
  1149     unsigned int fields;
  1150     unsigned int methods;
  1151     unsigned int interfaces;
  1152     unsigned int fields2;      /* number of static 2-word fields */
  1153     unsigned int innerclasses; /* # of records in InnerClasses attr */
  1155     method_size_info clinit;   /* memory used in clinit */
  1156     method_size_info main;     /* used everywhere else */
  1157 } class_size_info;
  1159 /*
  1160  * Functions defined in libjava.so to perform string conversions.
  1162  */
  1164 typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
  1166 typedef char *(*to_c_string_fn_t)(JNIEnv *env, jstring s, jboolean *b);
  1168 /* This is the function defined in libjava.so that performs class
  1169  * format checks. This functions fills in size information about
  1170  * the class file and returns:
  1172  *   0: good
  1173  *  -1: out of memory
  1174  *  -2: bad format
  1175  *  -3: unsupported version
  1176  *  -4: bad class name
  1177  */
  1179 typedef jint (*check_format_fn_t)(char *class_name,
  1180                                   unsigned char *data,
  1181                                   unsigned int data_size,
  1182                                   class_size_info *class_size,
  1183                                   char *message_buffer,
  1184                                   jint buffer_length,
  1185                                   jboolean measure_only,
  1186                                   jboolean check_relaxed);
  1188 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
  1189                                         JVM_ACC_FINAL | \
  1190                                         JVM_ACC_SUPER | \
  1191                                         JVM_ACC_INTERFACE | \
  1192                                         JVM_ACC_ABSTRACT | \
  1193                                         JVM_ACC_ANNOTATION | \
  1194                                         JVM_ACC_ENUM | \
  1195                                         JVM_ACC_SYNTHETIC)
  1197 #define JVM_RECOGNIZED_FIELD_MODIFIERS (JVM_ACC_PUBLIC | \
  1198                                         JVM_ACC_PRIVATE | \
  1199                                         JVM_ACC_PROTECTED | \
  1200                                         JVM_ACC_STATIC | \
  1201                                         JVM_ACC_FINAL | \
  1202                                         JVM_ACC_VOLATILE | \
  1203                                         JVM_ACC_TRANSIENT | \
  1204                                         JVM_ACC_ENUM | \
  1205                                         JVM_ACC_SYNTHETIC)
  1207 #define JVM_RECOGNIZED_METHOD_MODIFIERS (JVM_ACC_PUBLIC | \
  1208                                          JVM_ACC_PRIVATE | \
  1209                                          JVM_ACC_PROTECTED | \
  1210                                          JVM_ACC_STATIC | \
  1211                                          JVM_ACC_FINAL | \
  1212                                          JVM_ACC_SYNCHRONIZED | \
  1213                                          JVM_ACC_BRIDGE | \
  1214                                          JVM_ACC_VARARGS | \
  1215                                          JVM_ACC_NATIVE | \
  1216                                          JVM_ACC_ABSTRACT | \
  1217                                          JVM_ACC_STRICT | \
  1218                                          JVM_ACC_SYNTHETIC)
  1220 /*
  1221  * This is the function defined in libjava.so to perform path
  1222  * canonicalization. VM call this function before opening jar files
  1223  * to load system classes.
  1225  */
  1227 typedef int (*canonicalize_fn_t)(JNIEnv *env, char *orig, char *out, int len);
  1229 /*************************************************************************
  1230  PART 3: I/O and Network Support
  1231  ************************************************************************/
  1233 /* Note that the JVM IO functions are expected to return JVM_IO_ERR
  1234  * when there is any kind of error. The caller can then use the
  1235  * platform specific support (e.g., errno) to get the detailed
  1236  * error info.  The JVM_GetLastErrorString procedure may also be used
  1237  * to obtain a descriptive error string.
  1238  */
  1239 #define JVM_IO_ERR  (-1)
  1241 /* For interruptible IO. Returning JVM_IO_INTR indicates that an IO
  1242  * operation has been disrupted by Thread.interrupt. There are a
  1243  * number of technical difficulties related to interruptible IO that
  1244  * need to be solved. For example, most existing programs do not handle
  1245  * InterruptedIOExceptions specially, they simply treat those as any
  1246  * IOExceptions, which typically indicate fatal errors.
  1248  * There are also two modes of operation for interruptible IO. In the
  1249  * resumption mode, an interrupted IO operation is guaranteed not to
  1250  * have any side-effects, and can be restarted. In the termination mode,
  1251  * an interrupted IO operation corrupts the underlying IO stream, so
  1252  * that the only reasonable operation on an interrupted stream is to
  1253  * close that stream. The resumption mode seems to be impossible to
  1254  * implement on Win32 and Solaris. Implementing the termination mode is
  1255  * easier, but it's not clear that's the right semantics.
  1257  * Interruptible IO is not supported on Win32.It can be enabled/disabled
  1258  * using a compile-time flag on Solaris. Third-party JVM ports do not
  1259  * need to implement interruptible IO.
  1260  */
  1261 #define JVM_IO_INTR (-2)
  1263 /* Write a string into the given buffer, in the platform's local encoding,
  1264  * that describes the most recent system-level error to occur in this thread.
  1265  * Return the length of the string or zero if no error occurred.
  1266  */
  1267 JNIEXPORT jint JNICALL
  1268 JVM_GetLastErrorString(char *buf, int len);
  1270 /*
  1271  * Convert a pathname into native format.  This function does syntactic
  1272  * cleanup, such as removing redundant separator characters.  It modifies
  1273  * the given pathname string in place.
  1274  */
  1275 JNIEXPORT char * JNICALL
  1276 JVM_NativePath(char *);
  1278 /*
  1279  * JVM I/O error codes
  1280  */
  1281 #define JVM_EEXIST       -100
  1283 /*
  1284  * Open a file descriptor. This function returns a negative error code
  1285  * on error, and a non-negative integer that is the file descriptor on
  1286  * success.
  1287  */
  1288 JNIEXPORT jint JNICALL
  1289 JVM_Open(const char *fname, jint flags, jint mode);
  1291 /*
  1292  * Close a file descriptor. This function returns -1 on error, and 0
  1293  * on success.
  1295  * fd        the file descriptor to close.
  1296  */
  1297 JNIEXPORT jint JNICALL
  1298 JVM_Close(jint fd);
  1300 /*
  1301  * Read data from a file decriptor into a char array.
  1303  * fd        the file descriptor to read from.
  1304  * buf       the buffer where to put the read data.
  1305  * nbytes    the number of bytes to read.
  1307  * This function returns -1 on error, and 0 on success.
  1308  */
  1309 JNIEXPORT jint JNICALL
  1310 JVM_Read(jint fd, char *buf, jint nbytes);
  1312 /*
  1313  * Write data from a char array to a file decriptor.
  1315  * fd        the file descriptor to read from.
  1316  * buf       the buffer from which to fetch the data.
  1317  * nbytes    the number of bytes to write.
  1319  * This function returns -1 on error, and 0 on success.
  1320  */
  1321 JNIEXPORT jint JNICALL
  1322 JVM_Write(jint fd, char *buf, jint nbytes);
  1324 /*
  1325  * Returns the number of bytes available for reading from a given file
  1326  * descriptor
  1327  */
  1328 JNIEXPORT jint JNICALL
  1329 JVM_Available(jint fd, jlong *pbytes);
  1331 /*
  1332  * Move the file descriptor pointer from whence by offset.
  1334  * fd        the file descriptor to move.
  1335  * offset    the number of bytes to move it by.
  1336  * whence    the start from where to move it.
  1338  * This function returns the resulting pointer location.
  1339  */
  1340 JNIEXPORT jlong JNICALL
  1341 JVM_Lseek(jint fd, jlong offset, jint whence);
  1343 /*
  1344  * Set the length of the file associated with the given descriptor to the given
  1345  * length.  If the new length is longer than the current length then the file
  1346  * is extended; the contents of the extended portion are not defined.  The
  1347  * value of the file pointer is undefined after this procedure returns.
  1348  */
  1349 JNIEXPORT jint JNICALL
  1350 JVM_SetLength(jint fd, jlong length);
  1352 /*
  1353  * Synchronize the file descriptor's in memory state with that of the
  1354  * physical device.  Return of -1 is an error, 0 is OK.
  1355  */
  1356 JNIEXPORT jint JNICALL
  1357 JVM_Sync(jint fd);
  1359 /*
  1360  * Networking library support
  1361  */
  1363 JNIEXPORT jint JNICALL
  1364 JVM_InitializeSocketLibrary(void);
  1366 struct sockaddr;
  1368 JNIEXPORT jint JNICALL
  1369 JVM_Socket(jint domain, jint type, jint protocol);
  1371 JNIEXPORT jint JNICALL
  1372 JVM_SocketClose(jint fd);
  1374 JNIEXPORT jint JNICALL
  1375 JVM_SocketShutdown(jint fd, jint howto);
  1377 JNIEXPORT jint JNICALL
  1378 JVM_Recv(jint fd, char *buf, jint nBytes, jint flags);
  1380 JNIEXPORT jint JNICALL
  1381 JVM_Send(jint fd, char *buf, jint nBytes, jint flags);
  1383 JNIEXPORT jint JNICALL
  1384 JVM_Timeout(int fd, long timeout);
  1386 JNIEXPORT jint JNICALL
  1387 JVM_Listen(jint fd, jint count);
  1389 JNIEXPORT jint JNICALL
  1390 JVM_Connect(jint fd, struct sockaddr *him, jint len);
  1392 JNIEXPORT jint JNICALL
  1393 JVM_Bind(jint fd, struct sockaddr *him, jint len);
  1395 JNIEXPORT jint JNICALL
  1396 JVM_Accept(jint fd, struct sockaddr *him, jint *len);
  1398 JNIEXPORT jint JNICALL
  1399 JVM_RecvFrom(jint fd, char *buf, int nBytes,
  1400                   int flags, struct sockaddr *from, int *fromlen);
  1402 JNIEXPORT jint JNICALL
  1403 JVM_SendTo(jint fd, char *buf, int len,
  1404                 int flags, struct sockaddr *to, int tolen);
  1406 JNIEXPORT jint JNICALL
  1407 JVM_SocketAvailable(jint fd, jint *result);
  1410 JNIEXPORT jint JNICALL
  1411 JVM_GetSockName(jint fd, struct sockaddr *him, int *len);
  1413 JNIEXPORT jint JNICALL
  1414 JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen);
  1416 JNIEXPORT jint JNICALL
  1417 JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen);
  1419 JNIEXPORT int JNICALL
  1420 JVM_GetHostName(char* name, int namelen);
  1422 /*
  1423  * The standard printing functions supported by the Java VM. (Should they
  1424  * be renamed to JVM_* in the future?
  1425  */
  1427 /*
  1428  * BE CAREFUL! The following functions do not implement the
  1429  * full feature set of standard C printf formats.
  1430  */
  1431 JNIEXPORT int
  1432 jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
  1434 JNIEXPORT int
  1435 jio_snprintf(char *str, size_t count, const char *fmt, ...);
  1437 JNIEXPORT int
  1438 jio_fprintf(FILE *, const char *fmt, ...);
  1440 JNIEXPORT int
  1441 jio_vfprintf(FILE *, const char *fmt, va_list args);
  1444 JNIEXPORT void * JNICALL
  1445 JVM_RawMonitorCreate(void);
  1447 JNIEXPORT void JNICALL
  1448 JVM_RawMonitorDestroy(void *mon);
  1450 JNIEXPORT jint JNICALL
  1451 JVM_RawMonitorEnter(void *mon);
  1453 JNIEXPORT void JNICALL
  1454 JVM_RawMonitorExit(void *mon);
  1456 /*
  1457  * java.lang.reflect.Method
  1458  */
  1459 JNIEXPORT jobject JNICALL
  1460 JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0);
  1462 /*
  1463  * java.lang.reflect.Constructor
  1464  */
  1465 JNIEXPORT jobject JNICALL
  1466 JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0);
  1468 /*
  1469  * java.lang.management support
  1470  */
  1471 JNIEXPORT void* JNICALL
  1472 JVM_GetManagement(jint version);
  1474 /*
  1475  * com.sun.tools.attach.VirtualMachine support
  1477  * Initialize the agent properties with the properties maintained in the VM.
  1478  */
  1479 JNIEXPORT jobject JNICALL
  1480 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
  1482 /* Generics reflection support.
  1484  * Returns information about the given class's EnclosingMethod
  1485  * attribute, if present, or null if the class had no enclosing
  1486  * method.
  1488  * If non-null, the returned array contains three elements. Element 0
  1489  * is the java.lang.Class of which the enclosing method is a member,
  1490  * and elements 1 and 2 are the java.lang.Strings for the enclosing
  1491  * method's name and descriptor, respectively.
  1492  */
  1493 JNIEXPORT jobjectArray JNICALL
  1494 JVM_GetEnclosingMethodInfo(JNIEnv* env, jclass ofClass);
  1496 /*
  1497  * Java thread state support
  1498  */
  1499 enum {
  1500     JAVA_THREAD_STATE_NEW           = 0,
  1501     JAVA_THREAD_STATE_RUNNABLE      = 1,
  1502     JAVA_THREAD_STATE_BLOCKED       = 2,
  1503     JAVA_THREAD_STATE_WAITING       = 3,
  1504     JAVA_THREAD_STATE_TIMED_WAITING = 4,
  1505     JAVA_THREAD_STATE_TERMINATED    = 5,
  1506     JAVA_THREAD_STATE_COUNT         = 6
  1507 };
  1509 /*
  1510  * Returns an array of the threadStatus values representing the
  1511  * given Java thread state.  Returns NULL if the VM version is
  1512  * incompatible with the JDK or doesn't support the given
  1513  * Java thread state.
  1514  */
  1515 JNIEXPORT jintArray JNICALL
  1516 JVM_GetThreadStateValues(JNIEnv* env, jint javaThreadState);
  1518 /*
  1519  * Returns an array of the substate names representing the
  1520  * given Java thread state.  Returns NULL if the VM version is
  1521  * incompatible with the JDK or the VM doesn't support
  1522  * the given Java thread state.
  1523  * values must be the jintArray returned from JVM_GetThreadStateValues
  1524  * and javaThreadState.
  1525  */
  1526 JNIEXPORT jobjectArray JNICALL
  1527 JVM_GetThreadStateNames(JNIEnv* env, jint javaThreadState, jintArray values);
  1529 /* =========================================================================
  1530  * The following defines a private JVM interface that the JDK can query
  1531  * for the JVM version and capabilities.  sun.misc.Version defines
  1532  * the methods for getting the VM version and its capabilities.
  1534  * When a new bit is added, the following should be updated to provide
  1535  * access to the new capability:
  1536  *    HS:   JVM_GetVersionInfo and Abstract_VM_Version class
  1537  *    SDK:  Version class
  1539  * Similary, a private JDK interface JDK_GetVersionInfo0 is defined for
  1540  * JVM to query for the JDK version and capabilities.
  1542  * When a new bit is added, the following should be updated to provide
  1543  * access to the new capability:
  1544  *    HS:   JDK_Version class
  1545  *    SDK:  JDK_GetVersionInfo0
  1547  * ==========================================================================
  1548  */
  1549 typedef struct {
  1550     /* HotSpot Express VM version string:
  1551      * <major>.<minor>-bxx[-<identifier>][-<debug_flavor>]
  1552      */
  1553     unsigned int jvm_version; /* Consists of major.minor.0.build */
  1554     unsigned int update_version : 8;         /* 0 in HotSpot Express VM */
  1555     unsigned int special_update_version : 8; /* 0 in HotSpot Express VM */
  1556     unsigned int reserved1 : 16;
  1557     unsigned int reserved2;
  1559     /* The following bits represents JVM supports that JDK has dependency on.
  1560      * JDK can use these bits to determine which JVM version
  1561      * and support it has to maintain runtime compatibility.
  1563      * When a new bit is added in a minor or update release, make sure
  1564      * the new bit is also added in the main/baseline.
  1565      */
  1566     unsigned int is_attachable : 1;
  1567     unsigned int : 31;
  1568     unsigned int : 32;
  1569     unsigned int : 32;
  1570 } jvm_version_info;
  1572 #define JVM_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
  1573 #define JVM_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
  1574 // Micro version is 0 in HotSpot Express VM (set in jvm.cpp).
  1575 #define JVM_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
  1576 /* Build number is available in all HotSpot Express VM builds.
  1577  * It is defined in make/hotspot_version file.
  1578  */
  1579 #define JVM_VERSION_BUILD(version) ((version & 0x000000FF))
  1581 JNIEXPORT void JNICALL
  1582 JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size);
  1584 typedef struct {
  1585     // Naming convention of RE build version string: n.n.n[_uu[c]][-<identifier>]-bxx
  1586     unsigned int jdk_version;   /* Consists of major, minor, micro (n.n.n) */
  1587                                 /* and build number (xx) */
  1588     unsigned int update_version : 8;         /* Update release version (uu) */
  1589     unsigned int special_update_version : 8; /* Special update release version (c)*/
  1590     unsigned int reserved1 : 16;
  1591     unsigned int reserved2;
  1593     /* The following bits represents new JDK supports that VM has dependency on.
  1594      * VM implementation can use these bits to determine which JDK version
  1595      * and support it has to maintain runtime compatibility.
  1597      * When a new bit is added in a minor or update release, make sure
  1598      * the new bit is also added in the main/baseline.
  1599      */
  1600     unsigned int thread_park_blocker : 1;
  1601     unsigned int post_vm_init_hook_enabled : 1;
  1602     unsigned int pending_list_uses_discovered_field : 1;
  1603     unsigned int : 29;
  1604     unsigned int : 32;
  1605     unsigned int : 32;
  1606 } jdk_version_info;
  1608 #define JDK_VERSION_MAJOR(version) ((version & 0xFF000000) >> 24)
  1609 #define JDK_VERSION_MINOR(version) ((version & 0x00FF0000) >> 16)
  1610 #define JDK_VERSION_MICRO(version) ((version & 0x0000FF00) >> 8)
  1612 /* Build number is available only for RE build (i.e. JDK_BUILD_NUMBER is set to bNN)
  1613  * It will be zero for internal builds.
  1614  */
  1615 #define JDK_VERSION_BUILD(version) ((version & 0x000000FF))
  1617 /*
  1618  * This is the function JDK_GetVersionInfo0 defined in libjava.so
  1619  * that is dynamically looked up by JVM.
  1620  */
  1621 typedef void (*jdk_version_info_fn_t)(jdk_version_info* info, size_t info_size);
  1623 /*
  1624  * This structure is used by the launcher to get the default thread
  1625  * stack size from the VM using JNI_GetDefaultJavaVMInitArgs() with a
  1626  * version of 1.1.  As it is not supported otherwise, it has been removed
  1627  * from jni.h
  1628  */
  1629 typedef struct JDK1_1InitArgs {
  1630     jint version;
  1632     char **properties;
  1633     jint checkSource;
  1634     jint nativeStackSize;
  1635     jint javaStackSize;
  1636     jint minHeapSize;
  1637     jint maxHeapSize;
  1638     jint verifyMode;
  1639     char *classpath;
  1641     jint (JNICALL *vfprintf)(FILE *fp, const char *format, va_list args);
  1642     void (JNICALL *exit)(jint code);
  1643     void (JNICALL *abort)(void);
  1645     jint enableClassGC;
  1646     jint enableVerboseGC;
  1647     jint disableAsyncGC;
  1648     jint verbose;
  1649     jboolean debugging;
  1650     jint debugPort;
  1651 } JDK1_1InitArgs;
  1653 #ifdef __cplusplus
  1654 } /* extern "C" */
  1655 #endif /* __cplusplus */
  1657 #endif /* !_JAVASOFT_JVM_H_ */
  1659 #endif // SHARE_VM_PRIMS_JVM_H

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