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      1 /*
      2  * Copyright (C) 2006 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 /*
     18  * JNI specification, as defined by Sun:
     19  * http://java.sun.com/javase/6/docs/technotes/guides/jni/spec/jniTOC.html
     20  *
     21  * Everything here is expected to be VM-neutral.
     22  */
     23 
     24 #ifndef JNI_H_
     25 #define JNI_H_
     26 
     27 #include <stdarg.h>
     28 #include <stdint.h>
     29 
     30 /* Primitive types that match up with Java equivalents. */
     31 typedef uint8_t  jboolean; /* unsigned 8 bits */
     32 typedef int8_t   jbyte;    /* signed 8 bits */
     33 typedef uint16_t jchar;    /* unsigned 16 bits */
     34 typedef int16_t  jshort;   /* signed 16 bits */
     35 typedef int32_t  jint;     /* signed 32 bits */
     36 typedef int64_t  jlong;    /* signed 64 bits */
     37 typedef float    jfloat;   /* 32-bit IEEE 754 */
     38 typedef double   jdouble;  /* 64-bit IEEE 754 */
     39 
     40 /* "cardinal indices and sizes" */
     41 typedef jint     jsize;
     42 
     43 #ifdef __cplusplus
     44 /*
     45  * Reference types, in C++
     46  */
     47 class _jobject {};
     48 class _jclass : public _jobject {};
     49 class _jstring : public _jobject {};
     50 class _jarray : public _jobject {};
     51 class _jobjectArray : public _jarray {};
     52 class _jbooleanArray : public _jarray {};
     53 class _jbyteArray : public _jarray {};
     54 class _jcharArray : public _jarray {};
     55 class _jshortArray : public _jarray {};
     56 class _jintArray : public _jarray {};
     57 class _jlongArray : public _jarray {};
     58 class _jfloatArray : public _jarray {};
     59 class _jdoubleArray : public _jarray {};
     60 class _jthrowable : public _jobject {};
     61 
     62 typedef _jobject*       jobject;
     63 typedef _jclass*        jclass;
     64 typedef _jstring*       jstring;
     65 typedef _jarray*        jarray;
     66 typedef _jobjectArray*  jobjectArray;
     67 typedef _jbooleanArray* jbooleanArray;
     68 typedef _jbyteArray*    jbyteArray;
     69 typedef _jcharArray*    jcharArray;
     70 typedef _jshortArray*   jshortArray;
     71 typedef _jintArray*     jintArray;
     72 typedef _jlongArray*    jlongArray;
     73 typedef _jfloatArray*   jfloatArray;
     74 typedef _jdoubleArray*  jdoubleArray;
     75 typedef _jthrowable*    jthrowable;
     76 typedef _jobject*       jweak;
     77 
     78 
     79 #else /* not __cplusplus */
     80 
     81 /*
     82  * Reference types, in C.
     83  */
     84 typedef void*           jobject;
     85 typedef jobject         jclass;
     86 typedef jobject         jstring;
     87 typedef jobject         jarray;
     88 typedef jarray          jobjectArray;
     89 typedef jarray          jbooleanArray;
     90 typedef jarray          jbyteArray;
     91 typedef jarray          jcharArray;
     92 typedef jarray          jshortArray;
     93 typedef jarray          jintArray;
     94 typedef jarray          jlongArray;
     95 typedef jarray          jfloatArray;
     96 typedef jarray          jdoubleArray;
     97 typedef jobject         jthrowable;
     98 typedef jobject         jweak;
     99 
    100 #endif /* not __cplusplus */
    101 
    102 struct _jfieldID;                       /* opaque structure */
    103 typedef struct _jfieldID* jfieldID;     /* field IDs */
    104 
    105 struct _jmethodID;                      /* opaque structure */
    106 typedef struct _jmethodID* jmethodID;   /* method IDs */
    107 
    108 struct JNIInvokeInterface;
    109 
    110 typedef union jvalue {
    111     jboolean    z;
    112     jbyte       b;
    113     jchar       c;
    114     jshort      s;
    115     jint        i;
    116     jlong       j;
    117     jfloat      f;
    118     jdouble     d;
    119     jobject     l;
    120 } jvalue;
    121 
    122 typedef enum jobjectRefType {
    123     JNIInvalidRefType = 0,
    124     JNILocalRefType = 1,
    125     JNIGlobalRefType = 2,
    126     JNIWeakGlobalRefType = 3
    127 } jobjectRefType;
    128 
    129 typedef struct {
    130     const char* name;
    131     const char* signature;
    132     void*       fnPtr;
    133 } JNINativeMethod;
    134 
    135 struct _JNIEnv;
    136 struct _JavaVM;
    137 typedef const struct JNINativeInterface* C_JNIEnv;
    138 
    139 #if defined(__cplusplus)
    140 typedef _JNIEnv JNIEnv;
    141 typedef _JavaVM JavaVM;
    142 #else
    143 typedef const struct JNINativeInterface* JNIEnv;
    144 typedef const struct JNIInvokeInterface* JavaVM;
    145 #endif
    146 
    147 /*
    148  * Table of interface function pointers.
    149  */
    150 struct JNINativeInterface {
    151     void*       reserved0;
    152     void*       reserved1;
    153     void*       reserved2;
    154     void*       reserved3;
    155 
    156     jint        (*GetVersion)(JNIEnv *);
    157 
    158     jclass      (*DefineClass)(JNIEnv*, const char*, jobject, const jbyte*,
    159                         jsize);
    160     jclass      (*FindClass)(JNIEnv*, const char*);
    161 
    162     jmethodID   (*FromReflectedMethod)(JNIEnv*, jobject);
    163     jfieldID    (*FromReflectedField)(JNIEnv*, jobject);
    164     /* spec doesn't show jboolean parameter */
    165     jobject     (*ToReflectedMethod)(JNIEnv*, jclass, jmethodID, jboolean);
    166 
    167     jclass      (*GetSuperclass)(JNIEnv*, jclass);
    168     jboolean    (*IsAssignableFrom)(JNIEnv*, jclass, jclass);
    169 
    170     /* spec doesn't show jboolean parameter */
    171     jobject     (*ToReflectedField)(JNIEnv*, jclass, jfieldID, jboolean);
    172 
    173     jint        (*Throw)(JNIEnv*, jthrowable);
    174     jint        (*ThrowNew)(JNIEnv *, jclass, const char *);
    175     jthrowable  (*ExceptionOccurred)(JNIEnv*);
    176     void        (*ExceptionDescribe)(JNIEnv*);
    177     void        (*ExceptionClear)(JNIEnv*);
    178     void        (*FatalError)(JNIEnv*, const char*);
    179 
    180     jint        (*PushLocalFrame)(JNIEnv*, jint);
    181     jobject     (*PopLocalFrame)(JNIEnv*, jobject);
    182 
    183     jobject     (*NewGlobalRef)(JNIEnv*, jobject);
    184     void        (*DeleteGlobalRef)(JNIEnv*, jobject);
    185     void        (*DeleteLocalRef)(JNIEnv*, jobject);
    186     jboolean    (*IsSameObject)(JNIEnv*, jobject, jobject);
    187 
    188     jobject     (*NewLocalRef)(JNIEnv*, jobject);
    189     jint        (*EnsureLocalCapacity)(JNIEnv*, jint);
    190 
    191     jobject     (*AllocObject)(JNIEnv*, jclass);
    192     jobject     (*NewObject)(JNIEnv*, jclass, jmethodID, ...);
    193     jobject     (*NewObjectV)(JNIEnv*, jclass, jmethodID, va_list);
    194     jobject     (*NewObjectA)(JNIEnv*, jclass, jmethodID, jvalue*);
    195 
    196     jclass      (*GetObjectClass)(JNIEnv*, jobject);
    197     jboolean    (*IsInstanceOf)(JNIEnv*, jobject, jclass);
    198     jmethodID   (*GetMethodID)(JNIEnv*, jclass, const char*, const char*);
    199 
    200     jobject     (*CallObjectMethod)(JNIEnv*, jobject, jmethodID, ...);
    201     jobject     (*CallObjectMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    202     jobject     (*CallObjectMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    203     jboolean    (*CallBooleanMethod)(JNIEnv*, jobject, jmethodID, ...);
    204     jboolean    (*CallBooleanMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    205     jboolean    (*CallBooleanMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    206     jbyte       (*CallByteMethod)(JNIEnv*, jobject, jmethodID, ...);
    207     jbyte       (*CallByteMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    208     jbyte       (*CallByteMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    209     jchar       (*CallCharMethod)(JNIEnv*, jobject, jmethodID, ...);
    210     jchar       (*CallCharMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    211     jchar       (*CallCharMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    212     jshort      (*CallShortMethod)(JNIEnv*, jobject, jmethodID, ...);
    213     jshort      (*CallShortMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    214     jshort      (*CallShortMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    215     jint        (*CallIntMethod)(JNIEnv*, jobject, jmethodID, ...);
    216     jint        (*CallIntMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    217     jint        (*CallIntMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    218     jlong       (*CallLongMethod)(JNIEnv*, jobject, jmethodID, ...);
    219     jlong       (*CallLongMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    220     jlong       (*CallLongMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    221     jfloat      (*CallFloatMethod)(JNIEnv*, jobject, jmethodID, ...);
    222     jfloat      (*CallFloatMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    223     jfloat      (*CallFloatMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    224     jdouble     (*CallDoubleMethod)(JNIEnv*, jobject, jmethodID, ...);
    225     jdouble     (*CallDoubleMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    226     jdouble     (*CallDoubleMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    227     void        (*CallVoidMethod)(JNIEnv*, jobject, jmethodID, ...);
    228     void        (*CallVoidMethodV)(JNIEnv*, jobject, jmethodID, va_list);
    229     void        (*CallVoidMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
    230 
    231     jobject     (*CallNonvirtualObjectMethod)(JNIEnv*, jobject, jclass,
    232                         jmethodID, ...);
    233     jobject     (*CallNonvirtualObjectMethodV)(JNIEnv*, jobject, jclass,
    234                         jmethodID, va_list);
    235     jobject     (*CallNonvirtualObjectMethodA)(JNIEnv*, jobject, jclass,
    236                         jmethodID, jvalue*);
    237     jboolean    (*CallNonvirtualBooleanMethod)(JNIEnv*, jobject, jclass,
    238                         jmethodID, ...);
    239     jboolean    (*CallNonvirtualBooleanMethodV)(JNIEnv*, jobject, jclass,
    240                          jmethodID, va_list);
    241     jboolean    (*CallNonvirtualBooleanMethodA)(JNIEnv*, jobject, jclass,
    242                          jmethodID, jvalue*);
    243     jbyte       (*CallNonvirtualByteMethod)(JNIEnv*, jobject, jclass,
    244                         jmethodID, ...);
    245     jbyte       (*CallNonvirtualByteMethodV)(JNIEnv*, jobject, jclass,
    246                         jmethodID, va_list);
    247     jbyte       (*CallNonvirtualByteMethodA)(JNIEnv*, jobject, jclass,
    248                         jmethodID, jvalue*);
    249     jchar       (*CallNonvirtualCharMethod)(JNIEnv*, jobject, jclass,
    250                         jmethodID, ...);
    251     jchar       (*CallNonvirtualCharMethodV)(JNIEnv*, jobject, jclass,
    252                         jmethodID, va_list);
    253     jchar       (*CallNonvirtualCharMethodA)(JNIEnv*, jobject, jclass,
    254                         jmethodID, jvalue*);
    255     jshort      (*CallNonvirtualShortMethod)(JNIEnv*, jobject, jclass,
    256                         jmethodID, ...);
    257     jshort      (*CallNonvirtualShortMethodV)(JNIEnv*, jobject, jclass,
    258                         jmethodID, va_list);
    259     jshort      (*CallNonvirtualShortMethodA)(JNIEnv*, jobject, jclass,
    260                         jmethodID, jvalue*);
    261     jint        (*CallNonvirtualIntMethod)(JNIEnv*, jobject, jclass,
    262                         jmethodID, ...);
    263     jint        (*CallNonvirtualIntMethodV)(JNIEnv*, jobject, jclass,
    264                         jmethodID, va_list);
    265     jint        (*CallNonvirtualIntMethodA)(JNIEnv*, jobject, jclass,
    266                         jmethodID, jvalue*);
    267     jlong       (*CallNonvirtualLongMethod)(JNIEnv*, jobject, jclass,
    268                         jmethodID, ...);
    269     jlong       (*CallNonvirtualLongMethodV)(JNIEnv*, jobject, jclass,
    270                         jmethodID, va_list);
    271     jlong       (*CallNonvirtualLongMethodA)(JNIEnv*, jobject, jclass,
    272                         jmethodID, jvalue*);
    273     jfloat      (*CallNonvirtualFloatMethod)(JNIEnv*, jobject, jclass,
    274                         jmethodID, ...);
    275     jfloat      (*CallNonvirtualFloatMethodV)(JNIEnv*, jobject, jclass,
    276                         jmethodID, va_list);
    277     jfloat      (*CallNonvirtualFloatMethodA)(JNIEnv*, jobject, jclass,
    278                         jmethodID, jvalue*);
    279     jdouble     (*CallNonvirtualDoubleMethod)(JNIEnv*, jobject, jclass,
    280                         jmethodID, ...);
    281     jdouble     (*CallNonvirtualDoubleMethodV)(JNIEnv*, jobject, jclass,
    282                         jmethodID, va_list);
    283     jdouble     (*CallNonvirtualDoubleMethodA)(JNIEnv*, jobject, jclass,
    284                         jmethodID, jvalue*);
    285     void        (*CallNonvirtualVoidMethod)(JNIEnv*, jobject, jclass,
    286                         jmethodID, ...);
    287     void        (*CallNonvirtualVoidMethodV)(JNIEnv*, jobject, jclass,
    288                         jmethodID, va_list);
    289     void        (*CallNonvirtualVoidMethodA)(JNIEnv*, jobject, jclass,
    290                         jmethodID, jvalue*);
    291 
    292     jfieldID    (*GetFieldID)(JNIEnv*, jclass, const char*, const char*);
    293 
    294     jobject     (*GetObjectField)(JNIEnv*, jobject, jfieldID);
    295     jboolean    (*GetBooleanField)(JNIEnv*, jobject, jfieldID);
    296     jbyte       (*GetByteField)(JNIEnv*, jobject, jfieldID);
    297     jchar       (*GetCharField)(JNIEnv*, jobject, jfieldID);
    298     jshort      (*GetShortField)(JNIEnv*, jobject, jfieldID);
    299     jint        (*GetIntField)(JNIEnv*, jobject, jfieldID);
    300     jlong       (*GetLongField)(JNIEnv*, jobject, jfieldID);
    301     jfloat      (*GetFloatField)(JNIEnv*, jobject, jfieldID);
    302     jdouble     (*GetDoubleField)(JNIEnv*, jobject, jfieldID);
    303 
    304     void        (*SetObjectField)(JNIEnv*, jobject, jfieldID, jobject);
    305     void        (*SetBooleanField)(JNIEnv*, jobject, jfieldID, jboolean);
    306     void        (*SetByteField)(JNIEnv*, jobject, jfieldID, jbyte);
    307     void        (*SetCharField)(JNIEnv*, jobject, jfieldID, jchar);
    308     void        (*SetShortField)(JNIEnv*, jobject, jfieldID, jshort);
    309     void        (*SetIntField)(JNIEnv*, jobject, jfieldID, jint);
    310     void        (*SetLongField)(JNIEnv*, jobject, jfieldID, jlong);
    311     void        (*SetFloatField)(JNIEnv*, jobject, jfieldID, jfloat);
    312     void        (*SetDoubleField)(JNIEnv*, jobject, jfieldID, jdouble);
    313 
    314     jmethodID   (*GetStaticMethodID)(JNIEnv*, jclass, const char*, const char*);
    315 
    316     jobject     (*CallStaticObjectMethod)(JNIEnv*, jclass, jmethodID, ...);
    317     jobject     (*CallStaticObjectMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    318     jobject     (*CallStaticObjectMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    319     jboolean    (*CallStaticBooleanMethod)(JNIEnv*, jclass, jmethodID, ...);
    320     jboolean    (*CallStaticBooleanMethodV)(JNIEnv*, jclass, jmethodID,
    321                         va_list);
    322     jboolean    (*CallStaticBooleanMethodA)(JNIEnv*, jclass, jmethodID,
    323                         jvalue*);
    324     jbyte       (*CallStaticByteMethod)(JNIEnv*, jclass, jmethodID, ...);
    325     jbyte       (*CallStaticByteMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    326     jbyte       (*CallStaticByteMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    327     jchar       (*CallStaticCharMethod)(JNIEnv*, jclass, jmethodID, ...);
    328     jchar       (*CallStaticCharMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    329     jchar       (*CallStaticCharMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    330     jshort      (*CallStaticShortMethod)(JNIEnv*, jclass, jmethodID, ...);
    331     jshort      (*CallStaticShortMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    332     jshort      (*CallStaticShortMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    333     jint        (*CallStaticIntMethod)(JNIEnv*, jclass, jmethodID, ...);
    334     jint        (*CallStaticIntMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    335     jint        (*CallStaticIntMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    336     jlong       (*CallStaticLongMethod)(JNIEnv*, jclass, jmethodID, ...);
    337     jlong       (*CallStaticLongMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    338     jlong       (*CallStaticLongMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    339     jfloat      (*CallStaticFloatMethod)(JNIEnv*, jclass, jmethodID, ...);
    340     jfloat      (*CallStaticFloatMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    341     jfloat      (*CallStaticFloatMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    342     jdouble     (*CallStaticDoubleMethod)(JNIEnv*, jclass, jmethodID, ...);
    343     jdouble     (*CallStaticDoubleMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    344     jdouble     (*CallStaticDoubleMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    345     void        (*CallStaticVoidMethod)(JNIEnv*, jclass, jmethodID, ...);
    346     void        (*CallStaticVoidMethodV)(JNIEnv*, jclass, jmethodID, va_list);
    347     void        (*CallStaticVoidMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
    348 
    349     jfieldID    (*GetStaticFieldID)(JNIEnv*, jclass, const char*,
    350                         const char*);
    351 
    352     jobject     (*GetStaticObjectField)(JNIEnv*, jclass, jfieldID);
    353     jboolean    (*GetStaticBooleanField)(JNIEnv*, jclass, jfieldID);
    354     jbyte       (*GetStaticByteField)(JNIEnv*, jclass, jfieldID);
    355     jchar       (*GetStaticCharField)(JNIEnv*, jclass, jfieldID);
    356     jshort      (*GetStaticShortField)(JNIEnv*, jclass, jfieldID);
    357     jint        (*GetStaticIntField)(JNIEnv*, jclass, jfieldID);
    358     jlong       (*GetStaticLongField)(JNIEnv*, jclass, jfieldID);
    359     jfloat      (*GetStaticFloatField)(JNIEnv*, jclass, jfieldID);
    360     jdouble     (*GetStaticDoubleField)(JNIEnv*, jclass, jfieldID);
    361 
    362     void        (*SetStaticObjectField)(JNIEnv*, jclass, jfieldID, jobject);
    363     void        (*SetStaticBooleanField)(JNIEnv*, jclass, jfieldID, jboolean);
    364     void        (*SetStaticByteField)(JNIEnv*, jclass, jfieldID, jbyte);
    365     void        (*SetStaticCharField)(JNIEnv*, jclass, jfieldID, jchar);
    366     void        (*SetStaticShortField)(JNIEnv*, jclass, jfieldID, jshort);
    367     void        (*SetStaticIntField)(JNIEnv*, jclass, jfieldID, jint);
    368     void        (*SetStaticLongField)(JNIEnv*, jclass, jfieldID, jlong);
    369     void        (*SetStaticFloatField)(JNIEnv*, jclass, jfieldID, jfloat);
    370     void        (*SetStaticDoubleField)(JNIEnv*, jclass, jfieldID, jdouble);
    371 
    372     jstring     (*NewString)(JNIEnv*, const jchar*, jsize);
    373     jsize       (*GetStringLength)(JNIEnv*, jstring);
    374     const jchar* (*GetStringChars)(JNIEnv*, jstring, jboolean*);
    375     void        (*ReleaseStringChars)(JNIEnv*, jstring, const jchar*);
    376     jstring     (*NewStringUTF)(JNIEnv*, const char*);
    377     jsize       (*GetStringUTFLength)(JNIEnv*, jstring);
    378     /* JNI spec says this returns const jbyte*, but that's inconsistent */
    379     const char* (*GetStringUTFChars)(JNIEnv*, jstring, jboolean*);
    380     void        (*ReleaseStringUTFChars)(JNIEnv*, jstring, const char*);
    381     jsize       (*GetArrayLength)(JNIEnv*, jarray);
    382     jobjectArray (*NewObjectArray)(JNIEnv*, jsize, jclass, jobject);
    383     jobject     (*GetObjectArrayElement)(JNIEnv*, jobjectArray, jsize);
    384     void        (*SetObjectArrayElement)(JNIEnv*, jobjectArray, jsize, jobject);
    385 
    386     jbooleanArray (*NewBooleanArray)(JNIEnv*, jsize);
    387     jbyteArray    (*NewByteArray)(JNIEnv*, jsize);
    388     jcharArray    (*NewCharArray)(JNIEnv*, jsize);
    389     jshortArray   (*NewShortArray)(JNIEnv*, jsize);
    390     jintArray     (*NewIntArray)(JNIEnv*, jsize);
    391     jlongArray    (*NewLongArray)(JNIEnv*, jsize);
    392     jfloatArray   (*NewFloatArray)(JNIEnv*, jsize);
    393     jdoubleArray  (*NewDoubleArray)(JNIEnv*, jsize);
    394 
    395     jboolean*   (*GetBooleanArrayElements)(JNIEnv*, jbooleanArray, jboolean*);
    396     jbyte*      (*GetByteArrayElements)(JNIEnv*, jbyteArray, jboolean*);
    397     jchar*      (*GetCharArrayElements)(JNIEnv*, jcharArray, jboolean*);
    398     jshort*     (*GetShortArrayElements)(JNIEnv*, jshortArray, jboolean*);
    399     jint*       (*GetIntArrayElements)(JNIEnv*, jintArray, jboolean*);
    400     jlong*      (*GetLongArrayElements)(JNIEnv*, jlongArray, jboolean*);
    401     jfloat*     (*GetFloatArrayElements)(JNIEnv*, jfloatArray, jboolean*);
    402     jdouble*    (*GetDoubleArrayElements)(JNIEnv*, jdoubleArray, jboolean*);
    403 
    404     void        (*ReleaseBooleanArrayElements)(JNIEnv*, jbooleanArray,
    405                         jboolean*, jint);
    406     void        (*ReleaseByteArrayElements)(JNIEnv*, jbyteArray,
    407                         jbyte*, jint);
    408     void        (*ReleaseCharArrayElements)(JNIEnv*, jcharArray,
    409                         jchar*, jint);
    410     void        (*ReleaseShortArrayElements)(JNIEnv*, jshortArray,
    411                         jshort*, jint);
    412     void        (*ReleaseIntArrayElements)(JNIEnv*, jintArray,
    413                         jint*, jint);
    414     void        (*ReleaseLongArrayElements)(JNIEnv*, jlongArray,
    415                         jlong*, jint);
    416     void        (*ReleaseFloatArrayElements)(JNIEnv*, jfloatArray,
    417                         jfloat*, jint);
    418     void        (*ReleaseDoubleArrayElements)(JNIEnv*, jdoubleArray,
    419                         jdouble*, jint);
    420 
    421     void        (*GetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
    422                         jsize, jsize, jboolean*);
    423     void        (*GetByteArrayRegion)(JNIEnv*, jbyteArray,
    424                         jsize, jsize, jbyte*);
    425     void        (*GetCharArrayRegion)(JNIEnv*, jcharArray,
    426                         jsize, jsize, jchar*);
    427     void        (*GetShortArrayRegion)(JNIEnv*, jshortArray,
    428                         jsize, jsize, jshort*);
    429     void        (*GetIntArrayRegion)(JNIEnv*, jintArray,
    430                         jsize, jsize, jint*);
    431     void        (*GetLongArrayRegion)(JNIEnv*, jlongArray,
    432                         jsize, jsize, jlong*);
    433     void        (*GetFloatArrayRegion)(JNIEnv*, jfloatArray,
    434                         jsize, jsize, jfloat*);
    435     void        (*GetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
    436                         jsize, jsize, jdouble*);
    437 
    438     /* spec shows these without const; some jni.h do, some don't */
    439     void        (*SetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
    440                         jsize, jsize, const jboolean*);
    441     void        (*SetByteArrayRegion)(JNIEnv*, jbyteArray,
    442                         jsize, jsize, const jbyte*);
    443     void        (*SetCharArrayRegion)(JNIEnv*, jcharArray,
    444                         jsize, jsize, const jchar*);
    445     void        (*SetShortArrayRegion)(JNIEnv*, jshortArray,
    446                         jsize, jsize, const jshort*);
    447     void        (*SetIntArrayRegion)(JNIEnv*, jintArray,
    448                         jsize, jsize, const jint*);
    449     void        (*SetLongArrayRegion)(JNIEnv*, jlongArray,
    450                         jsize, jsize, const jlong*);
    451     void        (*SetFloatArrayRegion)(JNIEnv*, jfloatArray,
    452                         jsize, jsize, const jfloat*);
    453     void        (*SetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
    454                         jsize, jsize, const jdouble*);
    455 
    456     jint        (*RegisterNatives)(JNIEnv*, jclass, const JNINativeMethod*,
    457                         jint);
    458     jint        (*UnregisterNatives)(JNIEnv*, jclass);
    459     jint        (*MonitorEnter)(JNIEnv*, jobject);
    460     jint        (*MonitorExit)(JNIEnv*, jobject);
    461     jint        (*GetJavaVM)(JNIEnv*, JavaVM**);
    462 
    463     void        (*GetStringRegion)(JNIEnv*, jstring, jsize, jsize, jchar*);
    464     void        (*GetStringUTFRegion)(JNIEnv*, jstring, jsize, jsize, char*);
    465 
    466     void*       (*GetPrimitiveArrayCritical)(JNIEnv*, jarray, jboolean*);
    467     void        (*ReleasePrimitiveArrayCritical)(JNIEnv*, jarray, void*, jint);
    468 
    469     const jchar* (*GetStringCritical)(JNIEnv*, jstring, jboolean*);
    470     void        (*ReleaseStringCritical)(JNIEnv*, jstring, const jchar*);
    471 
    472     jweak       (*NewWeakGlobalRef)(JNIEnv*, jobject);
    473     void        (*DeleteWeakGlobalRef)(JNIEnv*, jweak);
    474 
    475     jboolean    (*ExceptionCheck)(JNIEnv*);
    476 
    477     jobject     (*NewDirectByteBuffer)(JNIEnv*, void*, jlong);
    478     void*       (*GetDirectBufferAddress)(JNIEnv*, jobject);
    479     jlong       (*GetDirectBufferCapacity)(JNIEnv*, jobject);
    480 
    481     /* added in JNI 1.6 */
    482     jobjectRefType (*GetObjectRefType)(JNIEnv*, jobject);
    483 };
    484 
    485 /*
    486  * C++ object wrapper.
    487  *
    488  * This is usually overlaid on a C struct whose first element is a
    489  * JNINativeInterface*.  We rely somewhat on compiler behavior.
    490  */
    491 struct _JNIEnv {
    492     /* do not rename this; it does not seem to be entirely opaque */
    493     const struct JNINativeInterface* functions;
    494 
    495 #if defined(__cplusplus)
    496 
    497     jint GetVersion()
    498     { return functions->GetVersion(this); }
    499 
    500     jclass DefineClass(const char *name, jobject loader, const jbyte* buf,
    501         jsize bufLen)
    502     { return functions->DefineClass(this, name, loader, buf, bufLen); }
    503 
    504     jclass FindClass(const char* name)
    505     { return functions->FindClass(this, name); }
    506 
    507     jmethodID FromReflectedMethod(jobject method)
    508     { return functions->FromReflectedMethod(this, method); }
    509 
    510     jfieldID FromReflectedField(jobject field)
    511     { return functions->FromReflectedField(this, field); }
    512 
    513     jobject ToReflectedMethod(jclass cls, jmethodID methodID, jboolean isStatic)
    514     { return functions->ToReflectedMethod(this, cls, methodID, isStatic); }
    515 
    516     jclass GetSuperclass(jclass clazz)
    517     { return functions->GetSuperclass(this, clazz); }
    518 
    519     jboolean IsAssignableFrom(jclass clazz1, jclass clazz2)
    520     { return functions->IsAssignableFrom(this, clazz1, clazz2); }
    521 
    522     jobject ToReflectedField(jclass cls, jfieldID fieldID, jboolean isStatic)
    523     { return functions->ToReflectedField(this, cls, fieldID, isStatic); }
    524 
    525     jint Throw(jthrowable obj)
    526     { return functions->Throw(this, obj); }
    527 
    528     jint ThrowNew(jclass clazz, const char* message)
    529     { return functions->ThrowNew(this, clazz, message); }
    530 
    531     jthrowable ExceptionOccurred()
    532     { return functions->ExceptionOccurred(this); }
    533 
    534     void ExceptionDescribe()
    535     { functions->ExceptionDescribe(this); }
    536 
    537     void ExceptionClear()
    538     { functions->ExceptionClear(this); }
    539 
    540     void FatalError(const char* msg)
    541     { functions->FatalError(this, msg); }
    542 
    543     jint PushLocalFrame(jint capacity)
    544     { return functions->PushLocalFrame(this, capacity); }
    545 
    546     jobject PopLocalFrame(jobject result)
    547     { return functions->PopLocalFrame(this, result); }
    548 
    549     jobject NewGlobalRef(jobject obj)
    550     { return functions->NewGlobalRef(this, obj); }
    551 
    552     void DeleteGlobalRef(jobject globalRef)
    553     { functions->DeleteGlobalRef(this, globalRef); }
    554 
    555     void DeleteLocalRef(jobject localRef)
    556     { functions->DeleteLocalRef(this, localRef); }
    557 
    558     jboolean IsSameObject(jobject ref1, jobject ref2)
    559     { return functions->IsSameObject(this, ref1, ref2); }
    560 
    561     jobject NewLocalRef(jobject ref)
    562     { return functions->NewLocalRef(this, ref); }
    563 
    564     jint EnsureLocalCapacity(jint capacity)
    565     { return functions->EnsureLocalCapacity(this, capacity); }
    566 
    567     jobject AllocObject(jclass clazz)
    568     { return functions->AllocObject(this, clazz); }
    569 
    570     jobject NewObject(jclass clazz, jmethodID methodID, ...)
    571     {
    572         va_list args;
    573         va_start(args, methodID);
    574         jobject result = functions->NewObjectV(this, clazz, methodID, args);
    575         va_end(args);
    576         return result;
    577     }
    578 
    579     jobject NewObjectV(jclass clazz, jmethodID methodID, va_list args)
    580     { return functions->NewObjectV(this, clazz, methodID, args); }
    581 
    582     jobject NewObjectA(jclass clazz, jmethodID methodID, jvalue* args)
    583     { return functions->NewObjectA(this, clazz, methodID, args); }
    584 
    585     jclass GetObjectClass(jobject obj)
    586     { return functions->GetObjectClass(this, obj); }
    587 
    588     jboolean IsInstanceOf(jobject obj, jclass clazz)
    589     { return functions->IsInstanceOf(this, obj, clazz); }
    590 
    591     jmethodID GetMethodID(jclass clazz, const char* name, const char* sig)
    592     { return functions->GetMethodID(this, clazz, name, sig); }
    593 
    594 #define CALL_TYPE_METHOD(_jtype, _jname)                                    \
    595     _jtype Call##_jname##Method(jobject obj, jmethodID methodID, ...)       \
    596     {                                                                       \
    597         _jtype result;                                                      \
    598         va_list args;                                                       \
    599         va_start(args, methodID);                                           \
    600         result = functions->Call##_jname##MethodV(this, obj, methodID,      \
    601                     args);                                                  \
    602         va_end(args);                                                       \
    603         return result;                                                      \
    604     }
    605 #define CALL_TYPE_METHODV(_jtype, _jname)                                   \
    606     _jtype Call##_jname##MethodV(jobject obj, jmethodID methodID,           \
    607         va_list args)                                                       \
    608     { return functions->Call##_jname##MethodV(this, obj, methodID, args); }
    609 #define CALL_TYPE_METHODA(_jtype, _jname)                                   \
    610     _jtype Call##_jname##MethodA(jobject obj, jmethodID methodID,           \
    611         jvalue* args)                                                       \
    612     { return functions->Call##_jname##MethodA(this, obj, methodID, args); }
    613 
    614 #define CALL_TYPE(_jtype, _jname)                                           \
    615     CALL_TYPE_METHOD(_jtype, _jname)                                        \
    616     CALL_TYPE_METHODV(_jtype, _jname)                                       \
    617     CALL_TYPE_METHODA(_jtype, _jname)
    618 
    619     CALL_TYPE(jobject, Object)
    620     CALL_TYPE(jboolean, Boolean)
    621     CALL_TYPE(jbyte, Byte)
    622     CALL_TYPE(jchar, Char)
    623     CALL_TYPE(jshort, Short)
    624     CALL_TYPE(jint, Int)
    625     CALL_TYPE(jlong, Long)
    626     CALL_TYPE(jfloat, Float)
    627     CALL_TYPE(jdouble, Double)
    628 
    629     void CallVoidMethod(jobject obj, jmethodID methodID, ...)
    630     {
    631         va_list args;
    632         va_start(args, methodID);
    633         functions->CallVoidMethodV(this, obj, methodID, args);
    634         va_end(args);
    635     }
    636     void CallVoidMethodV(jobject obj, jmethodID methodID, va_list args)
    637     { functions->CallVoidMethodV(this, obj, methodID, args); }
    638     void CallVoidMethodA(jobject obj, jmethodID methodID, jvalue* args)
    639     { functions->CallVoidMethodA(this, obj, methodID, args); }
    640 
    641 #define CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                            \
    642     _jtype CallNonvirtual##_jname##Method(jobject obj, jclass clazz,        \
    643         jmethodID methodID, ...)                                            \
    644     {                                                                       \
    645         _jtype result;                                                      \
    646         va_list args;                                                       \
    647         va_start(args, methodID);                                           \
    648         result = functions->CallNonvirtual##_jname##MethodV(this, obj,      \
    649                     clazz, methodID, args);                                 \
    650         va_end(args);                                                       \
    651         return result;                                                      \
    652     }
    653 #define CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                           \
    654     _jtype CallNonvirtual##_jname##MethodV(jobject obj, jclass clazz,       \
    655         jmethodID methodID, va_list args)                                   \
    656     { return functions->CallNonvirtual##_jname##MethodV(this, obj, clazz,   \
    657         methodID, args); }
    658 #define CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)                           \
    659     _jtype CallNonvirtual##_jname##MethodA(jobject obj, jclass clazz,       \
    660         jmethodID methodID, jvalue* args)                                   \
    661     { return functions->CallNonvirtual##_jname##MethodA(this, obj, clazz,   \
    662         methodID, args); }
    663 
    664 #define CALL_NONVIRT_TYPE(_jtype, _jname)                                   \
    665     CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                                \
    666     CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                               \
    667     CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)
    668 
    669     CALL_NONVIRT_TYPE(jobject, Object)
    670     CALL_NONVIRT_TYPE(jboolean, Boolean)
    671     CALL_NONVIRT_TYPE(jbyte, Byte)
    672     CALL_NONVIRT_TYPE(jchar, Char)
    673     CALL_NONVIRT_TYPE(jshort, Short)
    674     CALL_NONVIRT_TYPE(jint, Int)
    675     CALL_NONVIRT_TYPE(jlong, Long)
    676     CALL_NONVIRT_TYPE(jfloat, Float)
    677     CALL_NONVIRT_TYPE(jdouble, Double)
    678 
    679     void CallNonvirtualVoidMethod(jobject obj, jclass clazz,
    680         jmethodID methodID, ...)
    681     {
    682         va_list args;
    683         va_start(args, methodID);
    684         functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args);
    685         va_end(args);
    686     }
    687     void CallNonvirtualVoidMethodV(jobject obj, jclass clazz,
    688         jmethodID methodID, va_list args)
    689     { functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args); }
    690     void CallNonvirtualVoidMethodA(jobject obj, jclass clazz,
    691         jmethodID methodID, jvalue* args)
    692     { functions->CallNonvirtualVoidMethodA(this, obj, clazz, methodID, args); }
    693 
    694     jfieldID GetFieldID(jclass clazz, const char* name, const char* sig)
    695     { return functions->GetFieldID(this, clazz, name, sig); }
    696 
    697     jobject GetObjectField(jobject obj, jfieldID fieldID)
    698     { return functions->GetObjectField(this, obj, fieldID); }
    699     jboolean GetBooleanField(jobject obj, jfieldID fieldID)
    700     { return functions->GetBooleanField(this, obj, fieldID); }
    701     jbyte GetByteField(jobject obj, jfieldID fieldID)
    702     { return functions->GetByteField(this, obj, fieldID); }
    703     jchar GetCharField(jobject obj, jfieldID fieldID)
    704     { return functions->GetCharField(this, obj, fieldID); }
    705     jshort GetShortField(jobject obj, jfieldID fieldID)
    706     { return functions->GetShortField(this, obj, fieldID); }
    707     jint GetIntField(jobject obj, jfieldID fieldID)
    708     { return functions->GetIntField(this, obj, fieldID); }
    709     jlong GetLongField(jobject obj, jfieldID fieldID)
    710     { return functions->GetLongField(this, obj, fieldID); }
    711     jfloat GetFloatField(jobject obj, jfieldID fieldID)
    712     { return functions->GetFloatField(this, obj, fieldID); }
    713     jdouble GetDoubleField(jobject obj, jfieldID fieldID)
    714     { return functions->GetDoubleField(this, obj, fieldID); }
    715 
    716     void SetObjectField(jobject obj, jfieldID fieldID, jobject value)
    717     { functions->SetObjectField(this, obj, fieldID, value); }
    718     void SetBooleanField(jobject obj, jfieldID fieldID, jboolean value)
    719     { functions->SetBooleanField(this, obj, fieldID, value); }
    720     void SetByteField(jobject obj, jfieldID fieldID, jbyte value)
    721     { functions->SetByteField(this, obj, fieldID, value); }
    722     void SetCharField(jobject obj, jfieldID fieldID, jchar value)
    723     { functions->SetCharField(this, obj, fieldID, value); }
    724     void SetShortField(jobject obj, jfieldID fieldID, jshort value)
    725     { functions->SetShortField(this, obj, fieldID, value); }
    726     void SetIntField(jobject obj, jfieldID fieldID, jint value)
    727     { functions->SetIntField(this, obj, fieldID, value); }
    728     void SetLongField(jobject obj, jfieldID fieldID, jlong value)
    729     { functions->SetLongField(this, obj, fieldID, value); }
    730     void SetFloatField(jobject obj, jfieldID fieldID, jfloat value)
    731     { functions->SetFloatField(this, obj, fieldID, value); }
    732     void SetDoubleField(jobject obj, jfieldID fieldID, jdouble value)
    733     { functions->SetDoubleField(this, obj, fieldID, value); }
    734 
    735     jmethodID GetStaticMethodID(jclass clazz, const char* name, const char* sig)
    736     { return functions->GetStaticMethodID(this, clazz, name, sig); }
    737 
    738 #define CALL_STATIC_TYPE_METHOD(_jtype, _jname)                             \
    739     _jtype CallStatic##_jname##Method(jclass clazz, jmethodID methodID,     \
    740         ...)                                                                \
    741     {                                                                       \
    742         _jtype result;                                                      \
    743         va_list args;                                                       \
    744         va_start(args, methodID);                                           \
    745         result = functions->CallStatic##_jname##MethodV(this, clazz,        \
    746                     methodID, args);                                        \
    747         va_end(args);                                                       \
    748         return result;                                                      \
    749     }
    750 #define CALL_STATIC_TYPE_METHODV(_jtype, _jname)                            \
    751     _jtype CallStatic##_jname##MethodV(jclass clazz, jmethodID methodID,    \
    752         va_list args)                                                       \
    753     { return functions->CallStatic##_jname##MethodV(this, clazz, methodID,  \
    754         args); }
    755 #define CALL_STATIC_TYPE_METHODA(_jtype, _jname)                            \
    756     _jtype CallStatic##_jname##MethodA(jclass clazz, jmethodID methodID,    \
    757         jvalue* args)                                                       \
    758     { return functions->CallStatic##_jname##MethodA(this, clazz, methodID,  \
    759         args); }
    760 
    761 #define CALL_STATIC_TYPE(_jtype, _jname)                                    \
    762     CALL_STATIC_TYPE_METHOD(_jtype, _jname)                                 \
    763     CALL_STATIC_TYPE_METHODV(_jtype, _jname)                                \
    764     CALL_STATIC_TYPE_METHODA(_jtype, _jname)
    765 
    766     CALL_STATIC_TYPE(jobject, Object)
    767     CALL_STATIC_TYPE(jboolean, Boolean)
    768     CALL_STATIC_TYPE(jbyte, Byte)
    769     CALL_STATIC_TYPE(jchar, Char)
    770     CALL_STATIC_TYPE(jshort, Short)
    771     CALL_STATIC_TYPE(jint, Int)
    772     CALL_STATIC_TYPE(jlong, Long)
    773     CALL_STATIC_TYPE(jfloat, Float)
    774     CALL_STATIC_TYPE(jdouble, Double)
    775 
    776     void CallStaticVoidMethod(jclass clazz, jmethodID methodID, ...)
    777     {
    778         va_list args;
    779         va_start(args, methodID);
    780         functions->CallStaticVoidMethodV(this, clazz, methodID, args);
    781         va_end(args);
    782     }
    783     void CallStaticVoidMethodV(jclass clazz, jmethodID methodID, va_list args)
    784     { functions->CallStaticVoidMethodV(this, clazz, methodID, args); }
    785     void CallStaticVoidMethodA(jclass clazz, jmethodID methodID, jvalue* args)
    786     { functions->CallStaticVoidMethodA(this, clazz, methodID, args); }
    787 
    788     jfieldID GetStaticFieldID(jclass clazz, const char* name, const char* sig)
    789     { return functions->GetStaticFieldID(this, clazz, name, sig); }
    790 
    791     jobject GetStaticObjectField(jclass clazz, jfieldID fieldID)
    792     { return functions->GetStaticObjectField(this, clazz, fieldID); }
    793     jboolean GetStaticBooleanField(jclass clazz, jfieldID fieldID)
    794     { return functions->GetStaticBooleanField(this, clazz, fieldID); }
    795     jbyte GetStaticByteField(jclass clazz, jfieldID fieldID)
    796     { return functions->GetStaticByteField(this, clazz, fieldID); }
    797     jchar GetStaticCharField(jclass clazz, jfieldID fieldID)
    798     { return functions->GetStaticCharField(this, clazz, fieldID); }
    799     jshort GetStaticShortField(jclass clazz, jfieldID fieldID)
    800     { return functions->GetStaticShortField(this, clazz, fieldID); }
    801     jint GetStaticIntField(jclass clazz, jfieldID fieldID)
    802     { return functions->GetStaticIntField(this, clazz, fieldID); }
    803     jlong GetStaticLongField(jclass clazz, jfieldID fieldID)
    804     { return functions->GetStaticLongField(this, clazz, fieldID); }
    805     jfloat GetStaticFloatField(jclass clazz, jfieldID fieldID)
    806     { return functions->GetStaticFloatField(this, clazz, fieldID); }
    807     jdouble GetStaticDoubleField(jclass clazz, jfieldID fieldID)
    808     { return functions->GetStaticDoubleField(this, clazz, fieldID); }
    809 
    810     void SetStaticObjectField(jclass clazz, jfieldID fieldID, jobject value)
    811     { functions->SetStaticObjectField(this, clazz, fieldID, value); }
    812     void SetStaticBooleanField(jclass clazz, jfieldID fieldID, jboolean value)
    813     { functions->SetStaticBooleanField(this, clazz, fieldID, value); }
    814     void SetStaticByteField(jclass clazz, jfieldID fieldID, jbyte value)
    815     { functions->SetStaticByteField(this, clazz, fieldID, value); }
    816     void SetStaticCharField(jclass clazz, jfieldID fieldID, jchar value)
    817     { functions->SetStaticCharField(this, clazz, fieldID, value); }
    818     void SetStaticShortField(jclass clazz, jfieldID fieldID, jshort value)
    819     { functions->SetStaticShortField(this, clazz, fieldID, value); }
    820     void SetStaticIntField(jclass clazz, jfieldID fieldID, jint value)
    821     { functions->SetStaticIntField(this, clazz, fieldID, value); }
    822     void SetStaticLongField(jclass clazz, jfieldID fieldID, jlong value)
    823     { functions->SetStaticLongField(this, clazz, fieldID, value); }
    824     void SetStaticFloatField(jclass clazz, jfieldID fieldID, jfloat value)
    825     { functions->SetStaticFloatField(this, clazz, fieldID, value); }
    826     void SetStaticDoubleField(jclass clazz, jfieldID fieldID, jdouble value)
    827     { functions->SetStaticDoubleField(this, clazz, fieldID, value); }
    828 
    829     jstring NewString(const jchar* unicodeChars, jsize len)
    830     { return functions->NewString(this, unicodeChars, len); }
    831 
    832     jsize GetStringLength(jstring string)
    833     { return functions->GetStringLength(this, string); }
    834 
    835     const jchar* GetStringChars(jstring string, jboolean* isCopy)
    836     { return functions->GetStringChars(this, string, isCopy); }
    837 
    838     void ReleaseStringChars(jstring string, const jchar* chars)
    839     { functions->ReleaseStringChars(this, string, chars); }
    840 
    841     jstring NewStringUTF(const char* bytes)
    842     { return functions->NewStringUTF(this, bytes); }
    843 
    844     jsize GetStringUTFLength(jstring string)
    845     { return functions->GetStringUTFLength(this, string); }
    846 
    847     const char* GetStringUTFChars(jstring string, jboolean* isCopy)
    848     { return functions->GetStringUTFChars(this, string, isCopy); }
    849 
    850     void ReleaseStringUTFChars(jstring string, const char* utf)
    851     { functions->ReleaseStringUTFChars(this, string, utf); }
    852 
    853     jsize GetArrayLength(jarray array)
    854     { return functions->GetArrayLength(this, array); }
    855 
    856     jobjectArray NewObjectArray(jsize length, jclass elementClass,
    857         jobject initialElement)
    858     { return functions->NewObjectArray(this, length, elementClass,
    859         initialElement); }
    860 
    861     jobject GetObjectArrayElement(jobjectArray array, jsize index)
    862     { return functions->GetObjectArrayElement(this, array, index); }
    863 
    864     void SetObjectArrayElement(jobjectArray array, jsize index, jobject value)
    865     { functions->SetObjectArrayElement(this, array, index, value); }
    866 
    867     jbooleanArray NewBooleanArray(jsize length)
    868     { return functions->NewBooleanArray(this, length); }
    869     jbyteArray NewByteArray(jsize length)
    870     { return functions->NewByteArray(this, length); }
    871     jcharArray NewCharArray(jsize length)
    872     { return functions->NewCharArray(this, length); }
    873     jshortArray NewShortArray(jsize length)
    874     { return functions->NewShortArray(this, length); }
    875     jintArray NewIntArray(jsize length)
    876     { return functions->NewIntArray(this, length); }
    877     jlongArray NewLongArray(jsize length)
    878     { return functions->NewLongArray(this, length); }
    879     jfloatArray NewFloatArray(jsize length)
    880     { return functions->NewFloatArray(this, length); }
    881     jdoubleArray NewDoubleArray(jsize length)
    882     { return functions->NewDoubleArray(this, length); }
    883 
    884     jboolean* GetBooleanArrayElements(jbooleanArray array, jboolean* isCopy)
    885     { return functions->GetBooleanArrayElements(this, array, isCopy); }
    886     jbyte* GetByteArrayElements(jbyteArray array, jboolean* isCopy)
    887     { return functions->GetByteArrayElements(this, array, isCopy); }
    888     jchar* GetCharArrayElements(jcharArray array, jboolean* isCopy)
    889     { return functions->GetCharArrayElements(this, array, isCopy); }
    890     jshort* GetShortArrayElements(jshortArray array, jboolean* isCopy)
    891     { return functions->GetShortArrayElements(this, array, isCopy); }
    892     jint* GetIntArrayElements(jintArray array, jboolean* isCopy)
    893     { return functions->GetIntArrayElements(this, array, isCopy); }
    894     jlong* GetLongArrayElements(jlongArray array, jboolean* isCopy)
    895     { return functions->GetLongArrayElements(this, array, isCopy); }
    896     jfloat* GetFloatArrayElements(jfloatArray array, jboolean* isCopy)
    897     { return functions->GetFloatArrayElements(this, array, isCopy); }
    898     jdouble* GetDoubleArrayElements(jdoubleArray array, jboolean* isCopy)
    899     { return functions->GetDoubleArrayElements(this, array, isCopy); }
    900 
    901     void ReleaseBooleanArrayElements(jbooleanArray array, jboolean* elems,
    902         jint mode)
    903     { functions->ReleaseBooleanArrayElements(this, array, elems, mode); }
    904     void ReleaseByteArrayElements(jbyteArray array, jbyte* elems,
    905         jint mode)
    906     { functions->ReleaseByteArrayElements(this, array, elems, mode); }
    907     void ReleaseCharArrayElements(jcharArray array, jchar* elems,
    908         jint mode)
    909     { functions->ReleaseCharArrayElements(this, array, elems, mode); }
    910     void ReleaseShortArrayElements(jshortArray array, jshort* elems,
    911         jint mode)
    912     { functions->ReleaseShortArrayElements(this, array, elems, mode); }
    913     void ReleaseIntArrayElements(jintArray array, jint* elems,
    914         jint mode)
    915     { functions->ReleaseIntArrayElements(this, array, elems, mode); }
    916     void ReleaseLongArrayElements(jlongArray array, jlong* elems,
    917         jint mode)
    918     { functions->ReleaseLongArrayElements(this, array, elems, mode); }
    919     void ReleaseFloatArrayElements(jfloatArray array, jfloat* elems,
    920         jint mode)
    921     { functions->ReleaseFloatArrayElements(this, array, elems, mode); }
    922     void ReleaseDoubleArrayElements(jdoubleArray array, jdouble* elems,
    923         jint mode)
    924     { functions->ReleaseDoubleArrayElements(this, array, elems, mode); }
    925 
    926     void GetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
    927         jboolean* buf)
    928     { functions->GetBooleanArrayRegion(this, array, start, len, buf); }
    929     void GetByteArrayRegion(jbyteArray array, jsize start, jsize len,
    930         jbyte* buf)
    931     { functions->GetByteArrayRegion(this, array, start, len, buf); }
    932     void GetCharArrayRegion(jcharArray array, jsize start, jsize len,
    933         jchar* buf)
    934     { functions->GetCharArrayRegion(this, array, start, len, buf); }
    935     void GetShortArrayRegion(jshortArray array, jsize start, jsize len,
    936         jshort* buf)
    937     { functions->GetShortArrayRegion(this, array, start, len, buf); }
    938     void GetIntArrayRegion(jintArray array, jsize start, jsize len,
    939         jint* buf)
    940     { functions->GetIntArrayRegion(this, array, start, len, buf); }
    941     void GetLongArrayRegion(jlongArray array, jsize start, jsize len,
    942         jlong* buf)
    943     { functions->GetLongArrayRegion(this, array, start, len, buf); }
    944     void GetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
    945         jfloat* buf)
    946     { functions->GetFloatArrayRegion(this, array, start, len, buf); }
    947     void GetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
    948         jdouble* buf)
    949     { functions->GetDoubleArrayRegion(this, array, start, len, buf); }
    950 
    951     void SetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
    952         const jboolean* buf)
    953     { functions->SetBooleanArrayRegion(this, array, start, len, buf); }
    954     void SetByteArrayRegion(jbyteArray array, jsize start, jsize len,
    955         const jbyte* buf)
    956     { functions->SetByteArrayRegion(this, array, start, len, buf); }
    957     void SetCharArrayRegion(jcharArray array, jsize start, jsize len,
    958         const jchar* buf)
    959     { functions->SetCharArrayRegion(this, array, start, len, buf); }
    960     void SetShortArrayRegion(jshortArray array, jsize start, jsize len,
    961         const jshort* buf)
    962     { functions->SetShortArrayRegion(this, array, start, len, buf); }
    963     void SetIntArrayRegion(jintArray array, jsize start, jsize len,
    964         const jint* buf)
    965     { functions->SetIntArrayRegion(this, array, start, len, buf); }
    966     void SetLongArrayRegion(jlongArray array, jsize start, jsize len,
    967         const jlong* buf)
    968     { functions->SetLongArrayRegion(this, array, start, len, buf); }
    969     void SetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
    970         const jfloat* buf)
    971     { functions->SetFloatArrayRegion(this, array, start, len, buf); }
    972     void SetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
    973         const jdouble* buf)
    974     { functions->SetDoubleArrayRegion(this, array, start, len, buf); }
    975 
    976     jint RegisterNatives(jclass clazz, const JNINativeMethod* methods,
    977         jint nMethods)
    978     { return functions->RegisterNatives(this, clazz, methods, nMethods); }
    979 
    980     jint UnregisterNatives(jclass clazz)
    981     { return functions->UnregisterNatives(this, clazz); }
    982 
    983     jint MonitorEnter(jobject obj)
    984     { return functions->MonitorEnter(this, obj); }
    985 
    986     jint MonitorExit(jobject obj)
    987     { return functions->MonitorExit(this, obj); }
    988 
    989     jint GetJavaVM(JavaVM** vm)
    990     { return functions->GetJavaVM(this, vm); }
    991 
    992     void GetStringRegion(jstring str, jsize start, jsize len, jchar* buf)
    993     { functions->GetStringRegion(this, str, start, len, buf); }
    994 
    995     void GetStringUTFRegion(jstring str, jsize start, jsize len, char* buf)
    996     { return functions->GetStringUTFRegion(this, str, start, len, buf); }
    997 
    998     void* GetPrimitiveArrayCritical(jarray array, jboolean* isCopy)
    999     { return functions->GetPrimitiveArrayCritical(this, array, isCopy); }
   1000 
   1001     void ReleasePrimitiveArrayCritical(jarray array, void* carray, jint mode)
   1002     { functions->ReleasePrimitiveArrayCritical(this, array, carray, mode); }
   1003 
   1004     const jchar* GetStringCritical(jstring string, jboolean* isCopy)
   1005     { return functions->GetStringCritical(this, string, isCopy); }
   1006 
   1007     void ReleaseStringCritical(jstring string, const jchar* carray)
   1008     { functions->ReleaseStringCritical(this, string, carray); }
   1009 
   1010     jweak NewWeakGlobalRef(jobject obj)
   1011     { return functions->NewWeakGlobalRef(this, obj); }
   1012 
   1013     void DeleteWeakGlobalRef(jweak obj)
   1014     { functions->DeleteWeakGlobalRef(this, obj); }
   1015 
   1016     jboolean ExceptionCheck()
   1017     { return functions->ExceptionCheck(this); }
   1018 
   1019     jobject NewDirectByteBuffer(void* address, jlong capacity)
   1020     { return functions->NewDirectByteBuffer(this, address, capacity); }
   1021 
   1022     void* GetDirectBufferAddress(jobject buf)
   1023     { return functions->GetDirectBufferAddress(this, buf); }
   1024 
   1025     jlong GetDirectBufferCapacity(jobject buf)
   1026     { return functions->GetDirectBufferCapacity(this, buf); }
   1027 
   1028     /* added in JNI 1.6 */
   1029     jobjectRefType GetObjectRefType(jobject obj)
   1030     { return functions->GetObjectRefType(this, obj); }
   1031 #endif /*__cplusplus*/
   1032 };
   1033 
   1034 
   1035 /*
   1036  * JNI invocation interface.
   1037  */
   1038 struct JNIInvokeInterface {
   1039     void*       reserved0;
   1040     void*       reserved1;
   1041     void*       reserved2;
   1042 
   1043     jint        (*DestroyJavaVM)(JavaVM*);
   1044     jint        (*AttachCurrentThread)(JavaVM*, JNIEnv**, void*);
   1045     jint        (*DetachCurrentThread)(JavaVM*);
   1046     jint        (*GetEnv)(JavaVM*, void**, jint);
   1047     jint        (*AttachCurrentThreadAsDaemon)(JavaVM*, JNIEnv**, void*);
   1048 };
   1049 
   1050 /*
   1051  * C++ version.
   1052  */
   1053 struct _JavaVM {
   1054     const struct JNIInvokeInterface* functions;
   1055 
   1056 #if defined(__cplusplus)
   1057     jint DestroyJavaVM()
   1058     { return functions->DestroyJavaVM(this); }
   1059     jint AttachCurrentThread(JNIEnv** p_env, void* thr_args)
   1060     { return functions->AttachCurrentThread(this, p_env, thr_args); }
   1061     jint DetachCurrentThread()
   1062     { return functions->DetachCurrentThread(this); }
   1063     jint GetEnv(void** env, jint version)
   1064     { return functions->GetEnv(this, env, version); }
   1065     jint AttachCurrentThreadAsDaemon(JNIEnv** p_env, void* thr_args)
   1066     { return functions->AttachCurrentThreadAsDaemon(this, p_env, thr_args); }
   1067 #endif /*__cplusplus*/
   1068 };
   1069 
   1070 struct JavaVMAttachArgs {
   1071     jint        version;    /* must be >= JNI_VERSION_1_2 */
   1072     const char* name;       /* NULL or name of thread as modified UTF-8 str */
   1073     jobject     group;      /* global ref of a ThreadGroup object, or NULL */
   1074 };
   1075 typedef struct JavaVMAttachArgs JavaVMAttachArgs;
   1076 
   1077 /*
   1078  * JNI 1.2+ initialization.  (As of 1.6, the pre-1.2 structures are no
   1079  * longer supported.)
   1080  */
   1081 typedef struct JavaVMOption {
   1082     const char* optionString;
   1083     void*       extraInfo;
   1084 } JavaVMOption;
   1085 
   1086 typedef struct JavaVMInitArgs {
   1087     jint        version;    /* use JNI_VERSION_1_2 or later */
   1088 
   1089     jint        nOptions;
   1090     JavaVMOption* options;
   1091     jboolean    ignoreUnrecognized;
   1092 } JavaVMInitArgs;
   1093 
   1094 #ifdef __cplusplus
   1095 extern "C" {
   1096 #endif
   1097 /*
   1098  * VM initialization functions.
   1099  *
   1100  * Note these are the only symbols exported for JNI by the VM.
   1101  */
   1102 jint JNI_GetDefaultJavaVMInitArgs(void*);
   1103 jint JNI_CreateJavaVM(JavaVM**, JNIEnv**, void*);
   1104 jint JNI_GetCreatedJavaVMs(JavaVM**, jsize, jsize*);
   1105 
   1106 #define JNIIMPORT
   1107 #define JNIEXPORT  __attribute__ ((visibility ("default")))
   1108 #define JNICALL
   1109 
   1110 /*
   1111  * Prototypes for functions exported by loadable shared libs.  These are
   1112  * called by JNI, not provided by JNI.
   1113  */
   1114 JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved);
   1115 JNIEXPORT void JNI_OnUnload(JavaVM* vm, void* reserved);
   1116 
   1117 #ifdef __cplusplus
   1118 }
   1119 #endif
   1120 
   1121 
   1122 /*
   1123  * Manifest constants.
   1124  */
   1125 #define JNI_FALSE   0
   1126 #define JNI_TRUE    1
   1127 
   1128 #define JNI_VERSION_1_1 0x00010001
   1129 #define JNI_VERSION_1_2 0x00010002
   1130 #define JNI_VERSION_1_4 0x00010004
   1131 #define JNI_VERSION_1_6 0x00010006
   1132 
   1133 #define JNI_OK          (0)         /* no error */
   1134 #define JNI_ERR         (-1)        /* generic error */
   1135 #define JNI_EDETACHED   (-2)        /* thread detached from the VM */
   1136 #define JNI_EVERSION    (-3)        /* JNI version error */
   1137 
   1138 #define JNI_COMMIT      1           /* copy content, do not free buffer */
   1139 #define JNI_ABORT       2           /* free buffer w/o copying back */
   1140 
   1141 #endif  /* JNI_H_ */
   1142