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<jni.h> 全面剖析

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<jni.h> 全面剖析

文章链接:JNI 函数(一)版本信息、类操作、异常 

文章链接:JNI 函数(二)全局及局部引用

文章链接:JNI 函数(三)对象操作

文章链接:JNI 函数(四)字符串操作

文章链接:JNI 函数(五)数组操作

文章链接:JNI 函数(六)系统级别的操作

文章链接:JNI 函数(七)NIO 操作

文章链接:JNI 函数(八)反射支持、获取虚拟机

JNI的类型和数据结构

基本类型

  基本类型和本地等效类型表:

Java类型 本地类型 说明
boolean jboolean 无符号,8位
byte jbyte 无符号,8位
char jchar 无符号,16位
short jshort 有符号,16位
int jint 有符号,32位
long jlong 有符号,64位
float jfloat 32位
double jdouble 64位
void jobject N/A

 

  为了使用方便,特提供以下定义:

 1 /*
 2  * Manifest constants.
 3  */
 4 #define JNI_FALSE   0
 5 #define JNI_TRUE    1
 6 
 7 #define JNI_VERSION_1_1 0x00010001
 8 #define JNI_VERSION_1_2 0x00010002
 9 #define JNI_VERSION_1_4 0x00010004
10 #define JNI_VERSION_1_6 0x00010006
11 
12 #define JNI_OK          (0)         /* no error */
13 #define JNI_ERR         (-1)        /* generic error */
14 #define JNI_EDETACHED   (-2)        /* thread detached from the VM */
15 #define JNI_EVERSION    (-3)        /* JNI version error */
16 #define JNI_ENOMEM      (-4)        /* Out of memory */
17 #define JNI_EEXIST      (-5)        /* VM already created */
18 #define JNI_EINVAL      (-6)        /* Invalid argument */
19 
20 #define JNI_COMMIT      1           /* copy content, do not free buffer */
21 #define JNI_ABORT       2           /* free buffer w/o copying back */
22 
23 #endif  // LIBNATIVEHELPER_INCLUDE_JNI_JNI_H_

 

  jsize 整数类型用于描述主要指数和大小:

1 /* "cardinal indices and sizes" */
2 typedef jint     jsize;

 

引用类型

  JNI 包含了很多对应于不同 Java 对象的引用类型。JNI 引用类型的组织层次如图所示:

 

 1 #ifdef __cplusplus
 2 /*
 3  * Reference types, in C++
 4  */
 5 class _jobject {};
 6 class _jclass : public _jobject {};
 7 class _jstring : public _jobject {};
 8 class _jarray : public _jobject {};
 9 class _jobjectArray : public _jarray {};
10 class _jbooleanArray : public _jarray {};
11 class _jbyteArray : public _jarray {};
12 class _jcharArray : public _jarray {};
13 class _jshortArray : public _jarray {};
14 class _jintArray : public _jarray {};
15 class _jlongArray : public _jarray {};
16 class _jfloatArray : public _jarray {};
17 class _jdoubleArray : public _jarray {};
18 class _jthrowable : public _jobject {};
19 
20 typedef _jobject*       jobject;
21 typedef _jclass*        jclass;
22 typedef _jstring*       jstring;
23 typedef _jarray*        jarray;
24 typedef _jobjectArray*  jobjectArray;
25 typedef _jbooleanArray* jbooleanArray;
26 typedef _jbyteArray*    jbyteArray;
27 typedef _jcharArray*    jcharArray;
28 typedef _jshortArray*   jshortArray;
29 typedef _jintArray*     jintArray;
30 typedef _jlongArray*    jlongArray;
31 typedef _jfloatArray*   jfloatArray;
32 typedef _jdoubleArray*  jdoubleArray;
33 typedef _jthrowable*    jthrowable;
34 typedef _jobject*       jweak;
35 
36 
37 #else /* not __cplusplus */
38 
39 /*
40  * Reference types, in C.
41  */
42 typedef void*           jobject;
43 typedef jobject         jclass;
44 typedef jobject         jstring;
45 typedef jobject         jarray;
46 typedef jarray          jobjectArray;
47 typedef jarray          jbooleanArray;
48 typedef jarray          jbyteArray;
49 typedef jarray          jcharArray;
50 typedef jarray          jshortArray;
51 typedef jarray          jintArray;
52 typedef jarray          jlongArray;
53 typedef jarray          jfloatArray;
54 typedef jarray          jdoubleArray;
55 typedef jobject         jthrowable;
56 typedef jobject         jweak;
57 
58 #endif /* not __cplusplus */

 

  在 C 中,所有其它 JNI 引用类型都被定义为与 jobject 一样。例如:

1 typedef jobject jclass;

 

  在 C++ 中,JNI 引入了虚构类以加强子类关系。例如:

1 class _jobject {};
2 class _jclass : public _jobject {};
3 ...
4 typedef _jobject *jobject;
5 typedef _jclass *jclass;

 

域ID和方法ID

  方法 ID 和域 ID 是常规的 C 指针类型:

1 struct _jfieldID;                       /* opaque structure */
2 typedef struct _jfieldID* jfieldID;     /* field IDs */
3 
4 struct _jmethodID;                      /* opaque structure */
5 typedef struct _jmethodID* jmethodID;   /* method IDs */

 

值类型

  jvalue 联合类型在参数数组中用作单元类型。其声明方式如下:

 1 typedef union jvalue {
 2     jboolean    z;
 3     jbyte       b;
 4     jchar       c;
 5     jshort      s;
 6     jint        i;
 7     jlong       j;
 8     jfloat      f;
 9     jdouble     d;
10     jobject     l;
11 } jvalue;

 

类型签名

类型签名 Java 类型
Z boolean
B byte
C char
S short
I int
L/J long
F float
D double
L fully-qualified-class ; 全限定的类
[type type[]
( arg-types ) ret-type 方法类型

 

  例如,Java 方法:

1 long f (int n, String s, int[] arr);

 

  具有以下类型签名:

1 (ILjava/lang/String;[I)J
2 //网上我也有见人写
3 (ILjava/lang/String;[I)L
4 //对于 long 类型写 J/L 的大家在实际项目上可以根据报错不报错来使用,具体的差异我也没有去详细了解

 

UTF-8字符串

  JNI 用 UTF-8 字符串来表示各种字符串类型。UTF-8 字符串和 Java 虚拟机所使用的一样。UTF-8 字符串的编码方式使得仅包含非空 ASCII 字符的字符序列能够按每字符一个字节表示,但是最多只能表示 16 位的字符。所有在 \u0001 到 \u007F 范围内的字符都用单字节表示,如下所示:

1 |0|0-6位|

 

  字节中的七位数据确定了所表示字符的值。空字符 ( \u000 )和 \u0080 到 \u07FF 范围内的字符用一对字节表示, 即 x 和 y,如下所示:

1 x:|1|1|0|6-10位|             
2 y:|1|0|0-5位|

 

  值为 ((x & 0x1f)<<6) + (y & 0x3f)的字符需用两个字节表示。\u0800 到 \uFFFF 范围内的字符用三个字节表示,即 x,y 和 z:

1 x:|1|1|1|0|12-15位|
2 y:|1|0|6-11位|
3 z:|1|0|0-5位|

 

  值为((x & 0xf) << 12) + (y & 0x3f) << 6) + (z & 0x3f) 的字符需用三个字节表示。

  此格式与“标准” UTF-8 格式之间有两个区别。第一,空字节 (byte) 0 使用双字节格式进行编码,而不是单字节格式。这意味着 Java 虚拟机的 UTF-8 字符串不可能有嵌入的空值。第二,只使用单字节、双字节和三字节格式。Java 虚拟机不能识别更长的 UTF-8 格式。

JNI 函数

  本篇为 JNI 函数提供参考信息。其中列出了全部 JNI 函数,同时也给出了 JNI 函数表的准确布局。注意:“必须”一词用于约束 JNI 编程人员。例如,当说明某个 JNI 函数必须接收非空对象时,就应确保不要向该 JNI 函数传递 NULL。这时,JNI 实现将无需在该 JNI 函数中执行 NULL 指针检查。本章的部分资料改编自 Netscape 的 JRI 文档。该参考资料按用法对函数进行组织。

接口函数表

  每个函数均可通过 JNIEnv 参数以固定偏移量进行访问。JNIEnv 的类型是一个指针,指向存储全部 JNI 函数指针的结构。注意:前三项留作将来与 COM 兼容。此外,我们在函数表开头部分也留出来多个 NULL 项,从而可将将来与类有关的 JNI 操作添加到 FindClass 后面,而非函数表的末尾。注意,函数表可在所有 JNI 接口指针间共享。

  C 语言:

  1 /*
  2  * Table of interface function pointers.
  3  */
  4 struct JNINativeInterface {
  5     void*       reserved0;
  6     void*       reserved1;
  7     void*       reserved2;
  8     void*       reserved3;
  9 
 10     jint        (*GetVersion)(JNIEnv *);
 11 
 12     jclass      (*DefineClass)(JNIEnv*, const char*, jobject, const jbyte*,
 13                         jsize);
 14     jclass      (*FindClass)(JNIEnv*, const char*);
 15 
 16     jmethodID   (*FromReflectedMethod)(JNIEnv*, jobject);
 17     jfieldID    (*FromReflectedField)(JNIEnv*, jobject);
 18     /* spec doesn't show jboolean parameter */
 19     jobject     (*ToReflectedMethod)(JNIEnv*, jclass, jmethodID, jboolean);
 20 
 21     jclass      (*GetSuperclass)(JNIEnv*, jclass);
 22     jboolean    (*IsAssignableFrom)(JNIEnv*, jclass, jclass);
 23 
 24     /* spec doesn't show jboolean parameter */
 25     jobject     (*ToReflectedField)(JNIEnv*, jclass, jfieldID, jboolean);
 26 
 27     jint        (*Throw)(JNIEnv*, jthrowable);
 28     jint        (*ThrowNew)(JNIEnv *, jclass, const char *);
 29     jthrowable  (*ExceptionOccurred)(JNIEnv*);
 30     void        (*ExceptionDescribe)(JNIEnv*);
 31     void        (*ExceptionClear)(JNIEnv*);
 32     void        (*FatalError)(JNIEnv*, const char*);
 33 
 34     jint        (*PushLocalFrame)(JNIEnv*, jint);
 35     jobject     (*PopLocalFrame)(JNIEnv*, jobject);
 36 
 37     jobject     (*NewGlobalRef)(JNIEnv*, jobject);
 38     void        (*DeleteGlobalRef)(JNIEnv*, jobject);
 39     void        (*DeleteLocalRef)(JNIEnv*, jobject);
 40     jboolean    (*IsSameObject)(JNIEnv*, jobject, jobject);
 41 
 42     jobject     (*NewLocalRef)(JNIEnv*, jobject);
 43     jint        (*EnsureLocalCapacity)(JNIEnv*, jint);
 44 
 45     jobject     (*AllocObject)(JNIEnv*, jclass);
 46     jobject     (*NewObject)(JNIEnv*, jclass, jmethodID, ...);
 47     jobject     (*NewObjectV)(JNIEnv*, jclass, jmethodID, va_list);
 48     jobject     (*NewObjectA)(JNIEnv*, jclass, jmethodID, const jvalue*);
 49 
 50     jclass      (*GetObjectClass)(JNIEnv*, jobject);
 51     jboolean    (*IsInstanceOf)(JNIEnv*, jobject, jclass);
 52     jmethodID   (*GetMethodID)(JNIEnv*, jclass, const char*, const char*);
 53 
 54     jobject     (*CallObjectMethod)(JNIEnv*, jobject, jmethodID, ...);
 55     jobject     (*CallObjectMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 56     jobject     (*CallObjectMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 57     jboolean    (*CallBooleanMethod)(JNIEnv*, jobject, jmethodID, ...);
 58     jboolean    (*CallBooleanMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 59     jboolean    (*CallBooleanMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 60     jbyte       (*CallByteMethod)(JNIEnv*, jobject, jmethodID, ...);
 61     jbyte       (*CallByteMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 62     jbyte       (*CallByteMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 63     jchar       (*CallCharMethod)(JNIEnv*, jobject, jmethodID, ...);
 64     jchar       (*CallCharMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 65     jchar       (*CallCharMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 66     jshort      (*CallShortMethod)(JNIEnv*, jobject, jmethodID, ...);
 67     jshort      (*CallShortMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 68     jshort      (*CallShortMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 69     jint        (*CallIntMethod)(JNIEnv*, jobject, jmethodID, ...);
 70     jint        (*CallIntMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 71     jint        (*CallIntMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 72     jlong       (*CallLongMethod)(JNIEnv*, jobject, jmethodID, ...);
 73     jlong       (*CallLongMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 74     jlong       (*CallLongMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 75     jfloat      (*CallFloatMethod)(JNIEnv*, jobject, jmethodID, ...);
 76     jfloat      (*CallFloatMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 77     jfloat      (*CallFloatMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 78     jdouble     (*CallDoubleMethod)(JNIEnv*, jobject, jmethodID, ...);
 79     jdouble     (*CallDoubleMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 80     jdouble     (*CallDoubleMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 81     void        (*CallVoidMethod)(JNIEnv*, jobject, jmethodID, ...);
 82     void        (*CallVoidMethodV)(JNIEnv*, jobject, jmethodID, va_list);
 83     void        (*CallVoidMethodA)(JNIEnv*, jobject, jmethodID, const jvalue*);
 84 
 85     jobject     (*CallNonvirtualObjectMethod)(JNIEnv*, jobject, jclass,
 86                         jmethodID, ...);
 87     jobject     (*CallNonvirtualObjectMethodV)(JNIEnv*, jobject, jclass,
 88                         jmethodID, va_list);
 89     jobject     (*CallNonvirtualObjectMethodA)(JNIEnv*, jobject, jclass,
 90                         jmethodID, const jvalue*);
 91     jboolean    (*CallNonvirtualBooleanMethod)(JNIEnv*, jobject, jclass,
 92                         jmethodID, ...);
 93     jboolean    (*CallNonvirtualBooleanMethodV)(JNIEnv*, jobject, jclass,
 94                          jmethodID, va_list);
 95     jboolean    (*CallNonvirtualBooleanMethodA)(JNIEnv*, jobject, jclass,
 96                          jmethodID, const jvalue*);
 97     jbyte       (*CallNonvirtualByteMethod)(JNIEnv*, jobject, jclass,
 98                         jmethodID, ...);
 99     jbyte       (*CallNonvirtualByteMethodV)(JNIEnv*, jobject, jclass,
100                         jmethodID, va_list);
101     jbyte       (*CallNonvirtualByteMethodA)(JNIEnv*, jobject, jclass,
102                         jmethodID, const jvalue*);
103     jchar       (*CallNonvirtualCharMethod)(JNIEnv*, jobject, jclass,
104                         jmethodID, ...);
105     jchar       (*CallNonvirtualCharMethodV)(JNIEnv*, jobject, jclass,
106                         jmethodID, va_list);
107     jchar       (*CallNonvirtualCharMethodA)(JNIEnv*, jobject, jclass,
108                         jmethodID, const jvalue*);
109     jshort      (*CallNonvirtualShortMethod)(JNIEnv*, jobject, jclass,
110                         jmethodID, ...);
111     jshort      (*CallNonvirtualShortMethodV)(JNIEnv*, jobject, jclass,
112                         jmethodID, va_list);
113     jshort      (*CallNonvirtualShortMethodA)(JNIEnv*, jobject, jclass,
114                         jmethodID, const jvalue*);
115     jint        (*CallNonvirtualIntMethod)(JNIEnv*, jobject, jclass,
116                         jmethodID, ...);
117     jint        (*CallNonvirtualIntMethodV)(JNIEnv*, jobject, jclass,
118                         jmethodID, va_list);
119     jint        (*CallNonvirtualIntMethodA)(JNIEnv*, jobject, jclass,
120                         jmethodID, const jvalue*);
121     jlong       (*CallNonvirtualLongMethod)(JNIEnv*, jobject, jclass,
122                         jmethodID, ...);
123     jlong       (*CallNonvirtualLongMethodV)(JNIEnv*, jobject, jclass,
124                         jmethodID, va_list);
125     jlong       (*CallNonvirtualLongMethodA)(JNIEnv*, jobject, jclass,
126                         jmethodID, const jvalue*);
127     jfloat      (*CallNonvirtualFloatMethod)(JNIEnv*, jobject, jclass,
128                         jmethodID, ...);
129     jfloat      (*CallNonvirtualFloatMethodV)(JNIEnv*, jobject, jclass,
130                         jmethodID, va_list);
131     jfloat      (*CallNonvirtualFloatMethodA)(JNIEnv*, jobject, jclass,
132                         jmethodID, const jvalue*);
133     jdouble     (*CallNonvirtualDoubleMethod)(JNIEnv*, jobject, jclass,
134                         jmethodID, ...);
135     jdouble     (*CallNonvirtualDoubleMethodV)(JNIEnv*, jobject, jclass,
136                         jmethodID, va_list);
137     jdouble     (*CallNonvirtualDoubleMethodA)(JNIEnv*, jobject, jclass,
138                         jmethodID, const jvalue*);
139     void        (*CallNonvirtualVoidMethod)(JNIEnv*, jobject, jclass,
140                         jmethodID, ...);
141     void        (*CallNonvirtualVoidMethodV)(JNIEnv*, jobject, jclass,
142                         jmethodID, va_list);
143     void        (*CallNonvirtualVoidMethodA)(JNIEnv*, jobject, jclass,
144                         jmethodID, const jvalue*);
145 
146     jfieldID    (*GetFieldID)(JNIEnv*, jclass, const char*, const char*);
147 
148     jobject     (*GetObjectField)(JNIEnv*, jobject, jfieldID);
149     jboolean    (*GetBooleanField)(JNIEnv*, jobject, jfieldID);
150     jbyte       (*GetByteField)(JNIEnv*, jobject, jfieldID);
151     jchar       (*GetCharField)(JNIEnv*, jobject, jfieldID);
152     jshort      (*GetShortField)(JNIEnv*, jobject, jfieldID);
153     jint        (*GetIntField)(JNIEnv*, jobject, jfieldID);
154     jlong       (*GetLongField)(JNIEnv*, jobject, jfieldID);
155     jfloat      (*GetFloatField)(JNIEnv*, jobject, jfieldID);
156     jdouble     (*GetDoubleField)(JNIEnv*, jobject, jfieldID);
157 
158     void        (*SetObjectField)(JNIEnv*, jobject, jfieldID, jobject);
159     void        (*SetBooleanField)(JNIEnv*, jobject, jfieldID, jboolean);
160     void        (*SetByteField)(JNIEnv*, jobject, jfieldID, jbyte);
161     void        (*SetCharField)(JNIEnv*, jobject, jfieldID, jchar);
162     void        (*SetShortField)(JNIEnv*, jobject, jfieldID, jshort);
163     void        (*SetIntField)(JNIEnv*, jobject, jfieldID, jint);
164     void        (*SetLongField)(JNIEnv*, jobject, jfieldID, jlong);
165     void        (*SetFloatField)(JNIEnv*, jobject, jfieldID, jfloat);
166     void        (*SetDoubleField)(JNIEnv*, jobject, jfieldID, jdouble);
167 
168     jmethodID   (*GetStaticMethodID)(JNIEnv*, jclass, const char*, const char*);
169 
170     jobject     (*CallStaticObjectMethod)(JNIEnv*, jclass, jmethodID, ...);
171     jobject     (*CallStaticObjectMethodV)(JNIEnv*, jclass, jmethodID, va_list);
172     jobject     (*CallStaticObjectMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
173     jboolean    (*CallStaticBooleanMethod)(JNIEnv*, jclass, jmethodID, ...);
174     jboolean    (*CallStaticBooleanMethodV)(JNIEnv*, jclass, jmethodID,
175                         va_list);
176     jboolean    (*CallStaticBooleanMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
177     jbyte       (*CallStaticByteMethod)(JNIEnv*, jclass, jmethodID, ...);
178     jbyte       (*CallStaticByteMethodV)(JNIEnv*, jclass, jmethodID, va_list);
179     jbyte       (*CallStaticByteMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
180     jchar       (*CallStaticCharMethod)(JNIEnv*, jclass, jmethodID, ...);
181     jchar       (*CallStaticCharMethodV)(JNIEnv*, jclass, jmethodID, va_list);
182     jchar       (*CallStaticCharMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
183     jshort      (*CallStaticShortMethod)(JNIEnv*, jclass, jmethodID, ...);
184     jshort      (*CallStaticShortMethodV)(JNIEnv*, jclass, jmethodID, va_list);
185     jshort      (*CallStaticShortMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
186     jint        (*CallStaticIntMethod)(JNIEnv*, jclass, jmethodID, ...);
187     jint        (*CallStaticIntMethodV)(JNIEnv*, jclass, jmethodID, va_list);
188     jint        (*CallStaticIntMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
189     jlong       (*CallStaticLongMethod)(JNIEnv*, jclass, jmethodID, ...);
190     jlong       (*CallStaticLongMethodV)(JNIEnv*, jclass, jmethodID, va_list);
191     jlong       (*CallStaticLongMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
192     jfloat      (*CallStaticFloatMethod)(JNIEnv*, jclass, jmethodID, ...);
193     jfloat      (*CallStaticFloatMethodV)(JNIEnv*, jclass, jmethodID, va_list);
194     jfloat      (*CallStaticFloatMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
195     jdouble     (*CallStaticDoubleMethod)(JNIEnv*, jclass, jmethodID, ...);
196     jdouble     (*CallStaticDoubleMethodV)(JNIEnv*, jclass, jmethodID, va_list);
197     jdouble     (*CallStaticDoubleMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
198     void        (*CallStaticVoidMethod)(JNIEnv*, jclass, jmethodID, ...);
199     void        (*CallStaticVoidMethodV)(JNIEnv*, jclass, jmethodID, va_list);
200     void        (*CallStaticVoidMethodA)(JNIEnv*, jclass, jmethodID, const jvalue*);
201 
202     jfieldID    (*GetStaticFieldID)(JNIEnv*, jclass, const char*,
203                         const char*);
204 
205     jobject     (*GetStaticObjectField)(JNIEnv*, jclass, jfieldID);
206     jboolean    (*GetStaticBooleanField)(JNIEnv*, jclass, jfieldID);
207     jbyte       (*GetStaticByteField)(JNIEnv*, jclass, jfieldID);
208     jchar       (*GetStaticCharField)(JNIEnv*, jclass, jfieldID);
209     jshort      (*GetStaticShortField)(JNIEnv*, jclass, jfieldID);
210     jint        (*GetStaticIntField)(JNIEnv*, jclass, jfieldID);
211     jlong       (*GetStaticLongField)(JNIEnv*, jclass, jfieldID);
212     jfloat      (*GetStaticFloatField)(JNIEnv*, jclass, jfieldID);
213     jdouble     (*GetStaticDoubleField)(JNIEnv*, jclass, jfieldID);
214 
215     void        (*SetStaticObjectField)(JNIEnv*, jclass, jfieldID, jobject);
216     void        (*SetStaticBooleanField)(JNIEnv*, jclass, jfieldID, jboolean);
217     void        (*SetStaticByteField)(JNIEnv*, jclass, jfieldID, jbyte);
218     void        (*SetStaticCharField)(JNIEnv*, jclass, jfieldID, jchar);
219     void        (*SetStaticShortField)(JNIEnv*, jclass, jfieldID, jshort);
220     void        (*SetStaticIntField)(JNIEnv*, jclass, jfieldID, jint);
221     void        (*SetStaticLongField)(JNIEnv*, jclass, jfieldID, jlong);
222     void        (*SetStaticFloatField)(JNIEnv*, jclass, jfieldID, jfloat);
223     void        (*SetStaticDoubleField)(JNIEnv*, jclass, jfieldID, jdouble);
224 
225     jstring     (*NewString)(JNIEnv*, const jchar*, jsize);
226     jsize       (*GetStringLength)(JNIEnv*, jstring);
227     const jchar* (*GetStringChars)(JNIEnv*, jstring, jboolean*);
228     void        (*ReleaseStringChars)(JNIEnv*, jstring, const jchar*);
229     jstring     (*NewStringUTF)(JNIEnv*, const char*);
230     jsize       (*GetStringUTFLength)(JNIEnv*, jstring);
231     /* JNI spec says this returns const jbyte*, but that's inconsistent */
232     const char* (*GetStringUTFChars)(JNIEnv*, jstring, jboolean*);
233     void        (*ReleaseStringUTFChars)(JNIEnv*, jstring, const char*);
234     jsize       (*GetArrayLength)(JNIEnv*, jarray);
235     jobjectArray (*NewObjectArray)(JNIEnv*, jsize, jclass, jobject);
236     jobject     (*GetObjectArrayElement)(JNIEnv*, jobjectArray, jsize);
237     void        (*SetObjectArrayElement)(JNIEnv*, jobjectArray, jsize, jobject);
238 
239     jbooleanArray (*NewBooleanArray)(JNIEnv*, jsize);
240     jbyteArray    (*NewByteArray)(JNIEnv*, jsize);
241     jcharArray    (*NewCharArray)(JNIEnv*, jsize);
242     jshortArray   (*NewShortArray)(JNIEnv*, jsize);
243     jintArray     (*NewIntArray)(JNIEnv*, jsize);
244     jlongArray    (*NewLongArray)(JNIEnv*, jsize);
245     jfloatArray   (*NewFloatArray)(JNIEnv*, jsize);
246     jdoubleArray  (*NewDoubleArray)(JNIEnv*, jsize);
247 
248     jboolean*   (*GetBooleanArrayElements)(JNIEnv*, jbooleanArray, jboolean*);
249     jbyte*      (*GetByteArrayElements)(JNIEnv*, jbyteArray, jboolean*);
250     jchar*      (*GetCharArrayElements)(JNIEnv*, jcharArray, jboolean*);
251     jshort*     (*GetShortArrayElements)(JNIEnv*, jshortArray, jboolean*);
252     jint*       (*GetIntArrayElements)(JNIEnv*, jintArray, jboolean*);
253     jlong*      (*GetLongArrayElements)(JNIEnv*, jlongArray, jboolean*);
254     jfloat*     (*GetFloatArrayElements)(JNIEnv*, jfloatArray, jboolean*);
255     jdouble*    (*GetDoubleArrayElements)(JNIEnv*, jdoubleArray, jboolean*);
256 
257     void        (*ReleaseBooleanArrayElements)(JNIEnv*, jbooleanArray,
258                         jboolean*, jint);
259     void        (*ReleaseByteArrayElements)(JNIEnv*, jbyteArray,
260                         jbyte*, jint);
261     void        (*ReleaseCharArrayElements)(JNIEnv*, jcharArray,
262                         jchar*, jint);
263     void        (*ReleaseShortArrayElements)(JNIEnv*, jshortArray,
264                         jshort*, jint);
265     void        (*ReleaseIntArrayElements)(JNIEnv*, jintArray,
266                         jint*, jint);
267     void        (*ReleaseLongArrayElements)(JNIEnv*, jlongArray,
268                         jlong*, jint);
269     void        (*ReleaseFloatArrayElements)(JNIEnv*, jfloatArray,
270                         jfloat*, jint);
271     void        (*ReleaseDoubleArrayElements)(JNIEnv*, jdoubleArray,
272                         jdouble*, jint);
273 
274     void        (*GetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
275                         jsize, jsize, jboolean*);
276     void        (*GetByteArrayRegion)(JNIEnv*, jbyteArray,
277                         jsize, jsize, jbyte*);
278     void        (*GetCharArrayRegion)(JNIEnv*, jcharArray,
279                         jsize, jsize, jchar*);
280     void        (*GetShortArrayRegion)(JNIEnv*, jshortArray,
281                         jsize, jsize, jshort*);
282     void        (*GetIntArrayRegion)(JNIEnv*, jintArray,
283                         jsize, jsize, jint*);
284     void        (*GetLongArrayRegion)(JNIEnv*, jlongArray,
285                         jsize, jsize, jlong*);
286     void        (*GetFloatArrayRegion)(JNIEnv*, jfloatArray,
287                         jsize, jsize, jfloat*);
288     void        (*GetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
289                         jsize, jsize, jdouble*);
290 
291     /* spec shows these without const; some jni.h do, some don't */
292     void        (*SetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
293                         jsize, jsize, const jboolean*);
294     void        (*SetByteArrayRegion)(JNIEnv*, jbyteArray,
295                         jsize, jsize, const jbyte*);
296     void        (*SetCharArrayRegion)(JNIEnv*, jcharArray,
297                         jsize, jsize, const jchar*);
298     void        (*SetShortArrayRegion)(JNIEnv*, jshortArray,
299                         jsize, jsize, const jshort*);
300     void        (*SetIntArrayRegion)(JNIEnv*, jintArray,
301                         jsize, jsize, const jint*);
302     void        (*SetLongArrayRegion)(JNIEnv*, jlongArray,
303                         jsize, jsize, const jlong*);
304     void        (*SetFloatArrayRegion)(JNIEnv*, jfloatArray,
305                         jsize, jsize, const jfloat*);
306     void        (*SetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
307                         jsize, jsize, const jdouble*);
308 
309     jint        (*RegisterNatives)(JNIEnv*, jclass, const JNINativeMethod*,
310                         jint);
311     jint        (*UnregisterNatives)(JNIEnv*, jclass);
312     jint        (*MonitorEnter)(JNIEnv*, jobject);
313     jint        (*MonitorExit)(JNIEnv*, jobject);
314     jint        (*GetJavaVM)(JNIEnv*, JavaVM**);
315 
316     void        (*GetStringRegion)(JNIEnv*, jstring, jsize, jsize, jchar*);
317     void        (*GetStringUTFRegion)(JNIEnv*, jstring, jsize, jsize, char*);
318 
319     void*       (*GetPrimitiveArrayCritical)(JNIEnv*, jarray, jboolean*);
320     void        (*ReleasePrimitiveArrayCritical)(JNIEnv*, jarray, void*, jint);
321 
322     const jchar* (*GetStringCritical)(JNIEnv*, jstring, jboolean*);
323     void        (*ReleaseStringCritical)(JNIEnv*, jstring, const jchar*);
324 
325     jweak       (*NewWeakGlobalRef)(JNIEnv*, jobject);
326     void        (*DeleteWeakGlobalRef)(JNIEnv*, jweak);
327 
328     jboolean    (*ExceptionCheck)(JNIEnv*);
329 
330     jobject     (*NewDirectByteBuffer)(JNIEnv*, void*, jlong);
331     void*       (*GetDirectBufferAddress)(JNIEnv*, jobject);
332     jlong       (*GetDirectBufferCapacity)(JNIEnv*, jobject);
333 
334     /* added in JNI 1.6 */
335     jobjectRefType (*GetObjectRefType)(JNIEnv*, jobject);
336 };

 

  C ++ 对象封装器:

  1 /*
  2  * C++ object wrapper.
  3  *
  4  * This is usually overlaid on a C struct whose first element is a
  5  * JNINativeInterface*.  We rely somewhat on compiler behavior.
  6  */
  7 struct _JNIEnv {
  8     /* do not rename this; it does not seem to be entirely opaque */
  9     const struct JNINativeInterface* functions;
 10 
 11 #if defined(__cplusplus)
 12 
 13     jint GetVersion()
 14     { return functions->GetVersion(this); }
 15 
 16     jclass DefineClass(const char *name, jobject loader, const jbyte* buf,
 17         jsize bufLen)
 18     { return functions->DefineClass(this, name, loader, buf, bufLen); }
 19 
 20     jclass FindClass(const char* name)
 21     { return functions->FindClass(this, name); }
 22 
 23     jmethodID FromReflectedMethod(jobject method)
 24     { return functions->FromReflectedMethod(this, method); }
 25 
 26     jfieldID FromReflectedField(jobject field)
 27     { return functions->FromReflectedField(this, field); }
 28 
 29     jobject ToReflectedMethod(jclass cls, jmethodID methodID, jboolean isStatic)
 30     { return functions->ToReflectedMethod(this, cls, methodID, isStatic); }
 31 
 32     jclass GetSuperclass(jclass clazz)
 33     { return functions->GetSuperclass(this, clazz); }
 34 
 35     jboolean IsAssignableFrom(jclass clazz1, jclass clazz2)
 36     { return functions->IsAssignableFrom(this, clazz1, clazz2); }
 37 
 38     jobject ToReflectedField(jclass cls, jfieldID fieldID, jboolean isStatic)
 39     { return functions->ToReflectedField(this, cls, fieldID, isStatic); }
 40 
 41     jint Throw(jthrowable obj)
 42     { return functions->Throw(this, obj); }
 43 
 44     jint ThrowNew(jclass clazz, const char* message)
 45     { return functions->ThrowNew(this, clazz, message); }
 46 
 47     jthrowable ExceptionOccurred()
 48     { return functions->ExceptionOccurred(this); }
 49 
 50     void ExceptionDescribe()
 51     { functions->ExceptionDescribe(this); }
 52 
 53     void ExceptionClear()
 54     { functions->ExceptionClear(this); }
 55 
 56     void FatalError(const char* msg)
 57     { functions->FatalError(this, msg); }
 58 
 59     jint PushLocalFrame(jint capacity)
 60     { return functions->PushLocalFrame(this, capacity); }
 61 
 62     jobject PopLocalFrame(jobject result)
 63     { return functions->PopLocalFrame(this, result); }
 64 
 65     jobject NewGlobalRef(jobject obj)
 66     { return functions->NewGlobalRef(this, obj); }
 67 
 68     void DeleteGlobalRef(jobject globalRef)
 69     { functions->DeleteGlobalRef(this, globalRef); }
 70 
 71     void DeleteLocalRef(jobject localRef)
 72     { functions->DeleteLocalRef(this, localRef); }
 73 
 74     jboolean IsSameObject(jobject ref1, jobject ref2)
 75     { return functions->IsSameObject(this, ref1, ref2); }
 76 
 77     jobject NewLocalRef(jobject ref)
 78     { return functions->NewLocalRef(this, ref); }
 79 
 80     jint EnsureLocalCapacity(jint capacity)
 81     { return functions->EnsureLocalCapacity(this, capacity); }
 82 
 83     jobject AllocObject(jclass clazz)
 84     { return functions->AllocObject(this, clazz); }
 85 
 86     jobject NewObject(jclass clazz, jmethodID methodID, ...)
 87     {
 88         va_list args;
 89         va_start(args, methodID);
 90         jobject result = functions->NewObjectV(this, clazz, methodID, args);
 91         va_end(args);
 92         return result;
 93     }
 94 
 95     jobject NewObjectV(jclass clazz, jmethodID methodID, va_list args)
 96     { return functions->NewObjectV(this, clazz, methodID, args); }
 97 
 98     jobject NewObjectA(jclass clazz, jmethodID methodID, const jvalue* args)
 99     { return functions->NewObjectA(this, clazz, methodID, args); }
100 
101     jclass GetObjectClass(jobject obj)
102     { return functions->GetObjectClass(this, obj); }
103 
104     jboolean IsInstanceOf(jobject obj, jclass clazz)
105     { return functions->IsInstanceOf(this, obj, clazz); }
106 
107     jmethodID GetMethodID(jclass clazz, const char* name, const char* sig)
108     { return functions->GetMethodID(this, clazz, name, sig); }
109 
110 #define CALL_TYPE_METHOD(_jtype, _jname)                                    \
111     _jtype Call##_jname##Method(jobject obj, jmethodID methodID, ...)       \
112     {                                                                       \
113         _jtype result;                                                      \
114         va_list args;                                                       \
115         va_start(args, methodID);                                           \
116         result = functions->Call##_jname##MethodV(this, obj, methodID,      \
117                     args);                                                  \
118         va_end(args);                                                       \
119         return result;                                                      \
120     }
121 #define CALL_TYPE_METHODV(_jtype, _jname)                                   \
122     _jtype Call##_jname##MethodV(jobject obj, jmethodID methodID,           \
123         va_list args)                                                       \
124     { return functions->Call##_jname##MethodV(this, obj, methodID, args); }
125 #define CALL_TYPE_METHODA(_jtype, _jname)                                   \
126     _jtype Call##_jname##MethodA(jobject obj, jmethodID methodID,           \
127                                  const jvalue* args)                        \
128     { return functions->Call##_jname##MethodA(this, obj, methodID, args); }
129 
130 #define CALL_TYPE(_jtype, _jname)                                           \
131     CALL_TYPE_METHOD(_jtype, _jname)                                        \
132     CALL_TYPE_METHODV(_jtype, _jname)                                       \
133     CALL_TYPE_METHODA(_jtype, _jname)
134 
135     CALL_TYPE(jobject, Object)
136     CALL_TYPE(jboolean, Boolean)
137     CALL_TYPE(jbyte, Byte)
138     CALL_TYPE(jchar, Char)
139     CALL_TYPE(jshort, Short)
140     CALL_TYPE(jint, Int)
141     CALL_TYPE(jlong, Long)
142     CALL_TYPE(jfloat, Float)
143     CALL_TYPE(jdouble, Double)
144 
145     void CallVoidMethod(jobject obj, jmethodID methodID, ...)
146     {
147         va_list args;
148         va_start(args, methodID);
149         functions->CallVoidMethodV(this, obj, methodID, args);
150         va_end(args);
151     }
152     void CallVoidMethodV(jobject obj, jmethodID methodID, va_list args)
153     { functions->CallVoidMethodV(this, obj, methodID, args); }
154     void CallVoidMethodA(jobject obj, jmethodID methodID, const jvalue* args)
155     { functions->CallVoidMethodA(this, obj, methodID, args); }
156 
157 #define CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                            \
158     _jtype CallNonvirtual##_jname##Method(jobject obj, jclass clazz,        \
159         jmethodID methodID, ...)                                            \
160     {                                                                       \
161         _jtype result;                                                      \
162         va_list args;                                                       \
163         va_start(args, methodID);                                           \
164         result = functions->CallNonvirtual##_jname##MethodV(this, obj,      \
165                     clazz, methodID, args);                                 \
166         va_end(args);                                                       \
167         return result;                                                      \
168     }
169 #define CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                           \
170     _jtype CallNonvirtual##_jname##MethodV(jobject obj, jclass clazz,       \
171         jmethodID methodID, va_list args)                                   \
172     { return functions->CallNonvirtual##_jname##MethodV(this, obj, clazz,   \
173         methodID, args); }
174 #define CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)                           \
175     _jtype CallNonvirtual##_jname##MethodA(jobject obj, jclass clazz,       \
176         jmethodID methodID, const jvalue* args)                             \
177     { return functions->CallNonvirtual##_jname##MethodA(this, obj, clazz,   \
178         methodID, args); }
179 
180 #define CALL_NONVIRT_TYPE(_jtype, _jname)                                   \
181     CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                                \
182     CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                               \
183     CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)
184 
185     CALL_NONVIRT_TYPE(jobject, Object)
186     CALL_NONVIRT_TYPE(jboolean, Boolean)
187     CALL_NONVIRT_TYPE(jbyte, Byte)
188     CALL_NONVIRT_TYPE(jchar, Char)
189     CALL_NONVIRT_TYPE(jshort, Short)
190     CALL_NONVIRT_TYPE(jint, Int)
191     CALL_NONVIRT_TYPE(jlong, Long)
192     CALL_NONVIRT_TYPE(jfloat, Float)
193     CALL_NONVIRT_TYPE(jdouble, Double)
194 
195     void CallNonvirtualVoidMethod(jobject obj, jclass clazz,
196         jmethodID methodID, ...)
197     {
198         va_list args;
199         va_start(args, methodID);
200         functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args);
201         va_end(args);
202     }
203     void CallNonvirtualVoidMethodV(jobject obj, jclass clazz,
204         jmethodID methodID, va_list args)
205     { functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args); }
206     void CallNonvirtualVoidMethodA(jobject obj, jclass clazz,
207         jmethodID methodID, const jvalue* args)
208     { functions->CallNonvirtualVoidMethodA(this, obj, clazz, methodID, args); }
209 
210     jfieldID GetFieldID(jclass clazz, const char* name, const char* sig)
211     { return functions->GetFieldID(this, clazz, name, sig); }
212 
213     jobject GetObjectField(jobject obj, jfieldID fieldID)
214     { return functions->GetObjectField(this, obj, fieldID); }
215     jboolean GetBooleanField(jobject obj, jfieldID fieldID)
216     { return functions->GetBooleanField(this, obj, fieldID); }
217     jbyte GetByteField(jobject obj, jfieldID fieldID)
218     { return functions->GetByteField(this, obj, fieldID); }
219     jchar GetCharField(jobject obj, jfieldID fieldID)
220     { return functions->GetCharField(this, obj, fieldID); }
221     jshort GetShortField(jobject obj, jfieldID fieldID)
222     { return functions->GetShortField(this, obj, fieldID); }
223     jint GetIntField(jobject obj, jfieldID fieldID)
224     { return functions->GetIntField(this, obj, fieldID); }
225     jlong GetLongField(jobject obj, jfieldID fieldID)
226     { return functions->GetLongField(this, obj, fieldID); }
227     jfloat GetFloatField(jobject obj, jfieldID fieldID)
228     { return functions->GetFloatField(this, obj, fieldID); }
229     jdouble GetDoubleField(jobject obj, jfieldID fieldID)
230     { return functions->GetDoubleField(this, obj, fieldID); }
231 
232     void SetObjectField(jobject obj, jfieldID fieldID, jobject value)
233     { functions->SetObjectField(this, obj, fieldID, value); }
234     void SetBooleanField(jobject obj, jfieldID fieldID, jboolean value)
235     { functions->SetBooleanField(this, obj, fieldID, value); }
236     void SetByteField(jobject obj, jfieldID fieldID, jbyte value)
237     { functions->SetByteField(this, obj, fieldID, value); }
238     void SetCharField(jobject obj, jfieldID fieldID, jchar value)
239     { functions->SetCharField(this, obj, fieldID, value); }
240     void SetShortField(jobject obj, jfieldID fieldID, jshort value)
241     { functions->SetShortField(this, obj, fieldID, value); }
242     void SetIntField(jobject obj, jfieldID fieldID, jint value)
243     { functions->SetIntField(this, obj, fieldID, value); }
244     void SetLongField(jobject obj, jfieldID fieldID, jlong value)
245     { functions->SetLongField(this, obj, fieldID, value); }
246     void SetFloatField(jobject obj, jfieldID fieldID, jfloat value)
247     { functions->SetFloatField(this, obj, fieldID, value); }
248     void SetDoubleField(jobject obj, jfieldID fieldID, jdouble value)
249     { functions->SetDoubleField(this, obj, fieldID, value); }
250 
251     jmethodID GetStaticMethodID(jclass clazz, const char* name, const char* sig)
252     { return functions->GetStaticMethodID(this, clazz, name, sig); }
253 
254 #define CALL_STATIC_TYPE_METHOD(_jtype, _jname)                             \
255     _jtype CallStatic##_jname##Method(jclass clazz, jmethodID methodID,     \
256         ...)                                                                \
257     {                                                                       \
258         _jtype result;                                                      \
259         va_list args;                                                       \
260         va_start(args, methodID);                                           \
261         result = functions->CallStatic##_jname##MethodV(this, clazz,        \
262                     methodID, args);                                        \
263         va_end(args);                                                       \
264         return result;                                                      \
265     }
266 #define CALL_STATIC_TYPE_METHODV(_jtype, _jname)                            \
267     _jtype CallStatic##_jname##MethodV(jclass clazz, jmethodID methodID,    \
268         va_list args)                                                       \
269     { return functions->CallStatic##_jname##MethodV(this, clazz, methodID,  \
270         args); }
271 #define CALL_STATIC_TYPE_METHODA(_jtype, _jname)                            \
272     _jtype CallStatic##_jname##MethodA(jclass clazz, jmethodID methodID,    \
273                                        const jvalue* args)                  \
274     { return functions->CallStatic##_jname##MethodA(this, clazz, methodID,  \
275         args); }
276 
277 #define CALL_STATIC_TYPE(_jtype, _jname)                                    \
278     CALL_STATIC_TYPE_METHOD(_jtype, _jname)                                 \
279     CALL_STATIC_TYPE_METHODV(_jtype, _jname)                                \
280     CALL_STATIC_TYPE_METHODA(_jtype, _jname)
281 
282     CALL_STATIC_TYPE(jobject, Object)
283     CALL_STATIC_TYPE(jboolean, Boolean)
284     CALL_STATIC_TYPE(jbyte, Byte)
285     CALL_STATIC_TYPE(jchar, Char)
286     CALL_STATIC_TYPE(jshort, Short)
287     CALL_STATIC_TYPE(jint, Int)
288     CALL_STATIC_TYPE(jlong, Long)
289     CALL_STATIC_TYPE(jfloat, Float)
290     CALL_STATIC_TYPE(jdouble, Double)
291 
292     void CallStaticVoidMethod(jclass clazz, jmethodID methodID, ...)
293     {
294         va_list args;
295         va_start(args, methodID);
296         functions->CallStaticVoidMethodV(this, clazz, methodID, args);
297         va_end(args);
298     }
299     void CallStaticVoidMethodV(jclass clazz, jmethodID methodID, va_list args)
300     { functions->CallStaticVoidMethodV(this, clazz, methodID, args); }
301     void CallStaticVoidMethodA(jclass clazz, jmethodID methodID, const jvalue* args)
302     { functions->CallStaticVoidMethodA(this, clazz, methodID, args); }
303 
304     jfieldID GetStaticFieldID(jclass clazz, const char* name, const char* sig)
305     { return functions->GetStaticFieldID(this, clazz, name, sig); }
306 
307     jobject GetStaticObjectField(jclass clazz, jfieldID fieldID)
308     { return functions->GetStaticObjectField(this, clazz, fieldID); }
309     jboolean GetStaticBooleanField(jclass clazz, jfieldID fieldID)
310     { return functions->GetStaticBooleanField(this, clazz, fieldID); }
311     jbyte GetStaticByteField(jclass clazz, jfieldID fieldID)
312     { return functions->GetStaticByteField(this, clazz, fieldID); }
313     jchar GetStaticCharField(jclass clazz, jfieldID fieldID)
314     { return functions->GetStaticCharField(this, clazz, fieldID); }
315     jshort GetStaticShortField(jclass clazz, jfieldID fieldID)
316     { return functions->GetStaticShortField(this, clazz, fieldID); }
317     jint GetStaticIntField(jclass clazz, jfieldID fieldID)
318     { return functions->GetStaticIntField(this, clazz, fieldID); }
319     jlong GetStaticLongField(jclass clazz, jfieldID fieldID)
320     { return functions->GetStaticLongField(this, clazz, fieldID); }
321     jfloat GetStaticFloatField(jclass clazz, jfieldID fieldID)
322     { return functions->GetStaticFloatField(this, clazz, fieldID); }
323     jdouble GetStaticDoubleField(jclass clazz, jfieldID fieldID)
324     { return functions->GetStaticDoubleField(this, clazz, fieldID); }
325 
326     void SetStaticObjectField(jclass clazz, jfieldID fieldID, jobject value)
327     { functions->SetStaticObjectField(this, clazz, fieldID, value); }
328     void SetStaticBooleanField(jclass clazz, jfieldID fieldID, jboolean value)
329     { functions->SetStaticBooleanField(this, clazz, fieldID, value); }
330     void SetStaticByteField(jclass clazz, jfieldID fieldID, jbyte value)
331     { functions->SetStaticByteField(this, clazz, fieldID, value); }
332     void SetStaticCharField(jclass clazz, jfieldID fieldID, jchar value)
333     { functions->SetStaticCharField(this, clazz, fieldID, value); }
334     void SetStaticShortField(jclass clazz, jfieldID fieldID, jshort value)
335     { functions->SetStaticShortField(this, clazz, fieldID, value); }
336     void SetStaticIntField(jclass clazz, jfieldID fieldID, jint value)
337     { functions->SetStaticIntField(this, clazz, fieldID, value); }
338     void SetStaticLongField(jclass clazz, jfieldID fieldID, jlong value)
339     { functions->SetStaticLongField(this, clazz, fieldID, value); }
340     void SetStaticFloatField(jclass clazz, jfieldID fieldID, jfloat value)
341     { functions->SetStaticFloatField(this, clazz, fieldID, value); }
342     void SetStaticDoubleField(jclass clazz, jfieldID fieldID, jdouble value)
343     { functions->SetStaticDoubleField(this, clazz, fieldID, value); }
344 
345     jstring NewString(const jchar* unicodeChars, jsize len)
346     { return functions->NewString(this, unicodeChars, len); }
347 
348     jsize GetStringLength(jstring string)
349     { return functions->GetStringLength(this, string); }
350 
351     const jchar* GetStringChars(jstring string, jboolean* isCopy)
352     { return functions->GetStringChars(this, string, isCopy); }
353 
354     void ReleaseStringChars(jstring string, const jchar* chars)
355     { functions->ReleaseStringChars(this, string, chars); }
356 
357     jstring NewStringUTF(const char* bytes)
358     { return functions->NewStringUTF(this, bytes); }
359 
360     jsize GetStringUTFLength(jstring string)
361     { return functions->GetStringUTFLength(this, string); }
362 
363     const char* GetStringUTFChars(jstring string, jboolean* isCopy)
364     { return functions->GetStringUTFChars(this, string, isCopy); }
365 
366     void ReleaseStringUTFChars(jstring string, const char* utf)
367     { functions->ReleaseStringUTFChars(this, string, utf); }
368 
369     jsize GetArrayLength(jarray array)
370     { return functions->GetArrayLength(this, array); }
371 
372     jobjectArray NewObjectArray(jsize length, jclass elementClass,
373         jobject initialElement)
374     { return functions->NewObjectArray(this, length, elementClass,
375         initialElement); }
376 
377     jobject GetObjectArrayElement(jobjectArray array, jsize index)
378     { return functions->GetObjectArrayElement(this, array, index); }
379 
380     void SetObjectArrayElement(jobjectArray array, jsize index, jobject value)
381     { functions->SetObjectArrayElement(this, array, index, value); }
382 
383     jbooleanArray NewBooleanArray(jsize length)
384     { return functions->NewBooleanArray(this, length); }
385     jbyteArray NewByteArray(jsize length)
386     { return functions->NewByteArray(this, length); }
387     jcharArray NewCharArray(jsize length)
388     { return functions->NewCharArray(this, length); }
389     jshortArray NewShortArray(jsize length)
390     { return functions->NewShortArray(this, length); }
391     jintArray NewIntArray(jsize length)
392     { return functions->NewIntArray(this, length); }
393     jlongArray NewLongArray(jsize length)
394     { return functions->NewLongArray(this, length); }
395     jfloatArray NewFloatArray(jsize length)
396     { return functions->NewFloatArray(this, length); }
397     jdoubleArray NewDoubleArray(jsize length)
398     { return functions->NewDoubleArray(this, length); }
399 
400     jboolean* GetBooleanArrayElements(jbooleanArray array, jboolean* isCopy)
401     { return functions->GetBooleanArrayElements(this, array, isCopy); }
402     jbyte* GetByteArrayElements(jbyteArray array, jboolean* isCopy)
403     { return functions->GetByteArrayElements(this, array, isCopy); }
404     jchar* GetCharArrayElements(jcharArray array, jboolean* isCopy)
405     { return functions->GetCharArrayElements(this, array, isCopy); }
406     jshort* GetShortArrayElements(jshortArray array, jboolean* isCopy)
407     { return functions->GetShortArrayElements(this, array, isCopy); }
408     jint* GetIntArrayElements(jintArray array, jboolean* isCopy)
409     { return functions->GetIntArrayElements(this, array, isCopy); }
410     jlong* GetLongArrayElements(jlongArray array, jboolean* isCopy)
411     { return functions->GetLongArrayElements(this, array, isCopy); }
412     jfloat* GetFloatArrayElements(jfloatArray array, jboolean* isCopy)
413     { return functions->GetFloatArrayElements(this, array, isCopy); }
414     jdouble* GetDoubleArrayElements(jdoubleArray array, jboolean* isCopy)
415     { return functions->GetDoubleArrayElements(this, array, isCopy); }
416 
417     void ReleaseBooleanArrayElements(jbooleanArray array, jboolean* elems,
418         jint mode)
419     { functions->ReleaseBooleanArrayElements(this, array, elems, mode); }
420     void ReleaseByteArrayElements(jbyteArray array, jbyte* elems,
421         jint mode)
422     { functions->ReleaseByteArrayElements(this, array, elems, mode); }
423     void ReleaseCharArrayElements(jcharArray array, jchar* elems,
424         jint mode)
425     { functions->ReleaseCharArrayElements(this, array, elems, mode); }
426     void ReleaseShortArrayElements(jshortArray array, jshort* elems,
427         jint mode)
428     { functions->ReleaseShortArrayElements(this, array, elems, mode); }
429     void ReleaseIntArrayElements(jintArray array, jint* elems,
430         jint mode)
431     { functions->ReleaseIntArrayElements(this, array, elems, mode); }
432     void ReleaseLongArrayElements(jlongArray array, jlong* elems,
433         jint mode)
434     { functions->ReleaseLongArrayElements(this, array, elems, mode); }
435     void ReleaseFloatArrayElements(jfloatArray array, jfloat* elems,
436         jint mode)
437     { functions->ReleaseFloatArrayElements(this, array, elems, mode); }
438     void ReleaseDoubleArrayElements(jdoubleArray array, jdouble* elems,
439         jint mode)
440     { functions->ReleaseDoubleArrayElements(this, array, elems, mode); }
441 
442     void GetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
443         jboolean* buf)
444     { functions->GetBooleanArrayRegion(this, array, start, len, buf); }
445     void GetByteArrayRegion(jbyteArray array, jsize start, jsize len,
446         jbyte* buf)
447     { functions->GetByteArrayRegion(this, array, start, len, buf); }
448     void GetCharArrayRegion(jcharArray array, jsize start, jsize len,
449         jchar* buf)
450     { functions->GetCharArrayRegion(this, array, start, len, buf); }
451     void GetShortArrayRegion(jshortArray array, jsize start, jsize len,
452         jshort* buf)
453     { functions->GetShortArrayRegion(this, array, start, len, buf); }
454     void GetIntArrayRegion(jintArray array, jsize start, jsize len,
455         jint* buf)
456     { functions->GetIntArrayRegion(this, array, start, len, buf); }
457     void GetLongArrayRegion(jlongArray array, jsize start, jsize len,
458         jlong* buf)
459     { functions->GetLongArrayRegion(this, array, start, len, buf); }
460     void GetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
461         jfloat* buf)
462     { functions->GetFloatArrayRegion(this, array, start, len, buf); }
463     void GetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
464         jdouble* buf)
465     { functions->GetDoubleArrayRegion(this, array, start, len, buf); }
466 
467     void SetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
468         const jboolean* buf)
469     { functions->SetBooleanArrayRegion(this, array, start, len, buf); }
470     void SetByteArrayRegion(jbyteArray array, jsize start, jsize len,
471         const jbyte* buf)
472     { functions->SetByteArrayRegion(this, array, start, len, buf); }
473     void SetCharArrayRegion(jcharArray array, jsize start, jsize len,
474         const jchar* buf)
475     { functions->SetCharArrayRegion(this, array, start, len, buf); }
476     void SetShortArrayRegion(jshortArray array, jsize start, jsize len,
477         const jshort* buf)
478     { functions->SetShortArrayRegion(this, array, start, len, buf); }
479     void SetIntArrayRegion(jintArray array, jsize start, jsize len,
480         const jint* buf)
481     { functions->SetIntArrayRegion(this, array, start, len, buf); }
482     void SetLongArrayRegion(jlongArray array, jsize start, jsize len,
483         const jlong* buf)
484     { functions->SetLongArrayRegion(this, array, start, len, buf); }
485     void SetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
486         const jfloat* buf)
487     { functions->SetFloatArrayRegion(this, array, start, len, buf); }
488     void SetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
489         const jdouble* buf)
490     { functions->SetDoubleArrayRegion(this, array, start, len, buf); }
491 
492     jint RegisterNatives(jclass clazz, const JNINativeMethod* methods,
493         jint nMethods)
494     { return functions->RegisterNatives(this, clazz, methods, nMethods); }
495 
496     jint UnregisterNatives(jclass clazz)
497     { return functions->UnregisterNatives(this, clazz); }
498 
499     jint MonitorEnter(jobject obj)
500     { return functions->MonitorEnter(this, obj); }
501 
502     jint MonitorExit(jobject obj)
503     { return functions->MonitorExit(this, obj); }
504 
505     jint GetJavaVM(JavaVM** vm)
506     { return functions->GetJavaVM(this, vm); }
507 
508     void GetStringRegion(jstring str, jsize start, jsize len, jchar* buf)
509     { functions->GetStringRegion(this, str, start, len, buf); }
510 
511     void GetStringUTFRegion(jstring str, jsize start, jsize len, char* buf)
512     { return functions->GetStringUTFRegion(this, str, start, len, buf); }
513 
514     void* GetPrimitiveArrayCritical(jarray array, jboolean* isCopy)
515     { return functions->GetPrimitiveArrayCritical(this, array, isCopy); }
516 
517     void ReleasePrimitiveArrayCritical(jarray array, void* carray, jint mode)
518     { functions->ReleasePrimitiveArrayCritical(this, array, carray, mode); }
519 
520     const jchar* GetStringCritical(jstring string, jboolean* isCopy)
521     { return functions->GetStringCritical(this, string, isCopy); }
522 
523     void ReleaseStringCritical(jstring string, const jchar* carray)
524     { functions->ReleaseStringCritical(this, string, carray); }
525 
526     jweak NewWeakGlobalRef(jobject obj)
527     { return functions->NewWeakGlobalRef(this, obj); }
528 
529     void DeleteWeakGlobalRef(jweak obj)
530     { functions->DeleteWeakGlobalRef(this, obj); }
531 
532     jboolean ExceptionCheck()
533     { return functions->ExceptionCheck(this); }
534 
535     jobject NewDirectByteBuffer(void* address, jlong capacity)
536     { return functions->NewDirectByteBuffer(this, address, capacity); }
537 
538     void* GetDirectBufferAddress(jobject buf)
539     { return functions->GetDirectBufferAddress(this, buf); }
540 
541     jlong GetDirectBufferCapacity(jobject buf)
542     { return functions->GetDirectBufferCapacity(this, buf); }
543 
544     /* added in JNI 1.6 */
545     jobjectRefType GetObjectRefType(jobject obj)
546     { return functions->GetObjectRefType(this, obj); }
547 #endif /*__cplusplus*/
548 };

 

标签:functions,jobject,jclass,void,剖析,jmethodID,全面,JNIEnv
来源: https://www.cnblogs.com/Reverse-xiaoyu/p/14129211.html