1 /*
2  * Copyright (C) 2010 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 #ifndef JNI_CONSTANTS_H_included
18 #define JNI_CONSTANTS_H_included
19 
20 #include <jni.h>
21 
22 /**
23  * A cache to avoid calling FindClass at runtime.
24  */
25 struct JniConstants {
26     // Initialized cached heap objects. This should be called in JNI_OnLoad.
27     static void Initialize(JNIEnv* env);
28 
29     // Invalidate cached heap objects. This should be called in JNI_OnUnload.
30     static void Invalidate();
31 
32     static jclass GetBooleanClass(JNIEnv* env);
33     static jclass GetByteBufferClass(JNIEnv* env);
34     static jclass GetDoubleClass(JNIEnv* env);
35     static jclass GetErrnoExceptionClass(JNIEnv* env);
36     static jclass GetFileDescriptorClass(JNIEnv* env);
37     static jclass GetGaiExceptionClass(JNIEnv* env);
38     static jclass GetInet6AddressClass(JNIEnv* env);
39     static jclass GetInet6AddressHolderClass(JNIEnv* env);
40     static jclass GetInetAddressClass(JNIEnv* env);
41     static jclass GetInetAddressHolderClass(JNIEnv* env);
42     static jclass GetInetSocketAddressClass(JNIEnv* env);
43     static jclass GetInetSocketAddressHolderClass(JNIEnv* env);
44     static jclass GetIntegerClass(JNIEnv* env);
45     static jclass GetLocaleDataClass(JNIEnv* env);
46     static jclass GetLongClass(JNIEnv* env);
47     static jclass GetNetlinkSocketAddressClass(JNIEnv* env);
48     static jclass GetPacketSocketAddressClass(JNIEnv* env);
49     static jclass GetVmSocketAddressClass(JNIEnv* env);
50     static jclass GetPrimitiveByteArrayClass(JNIEnv* env);
51     static jclass GetStringClass(JNIEnv* env);
52     static jclass GetStructAddrinfoClass(JNIEnv* env);
53     static jclass GetStructCmsghdrClass(JNIEnv* env);
54     static jclass GetStructFlockClass(JNIEnv* env);
55     static jclass GetStructGroupReqClass(JNIEnv* env);
56     static jclass GetStructIfaddrsClass(JNIEnv* env);
57     static jclass GetStructLingerClass(JNIEnv* env);
58     static jclass GetStructMsghdrClass(JNIEnv* env);
59     static jclass GetStructPasswdClass(JNIEnv* env);
60     static jclass GetStructPollfdClass(JNIEnv* env);
61     static jclass GetStructStatClass(JNIEnv* env);
62     static jclass GetStructStatVfsClass(JNIEnv* env);
63     static jclass GetStructTimespecClass(JNIEnv* env);
64     static jclass GetStructTimevalClass(JNIEnv* env);
65     static jclass GetStructUcredClass(JNIEnv* env);
66     static jclass GetStructUtsnameClass(JNIEnv* env);
67     static jclass GetUnixSocketAddressClass(JNIEnv* env);
68 };
69 
70 #endif  // JNI_CONSTANTS_H_included
71