1 /*
2 * Copyright (c) 1997, 2002, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "net_util.h"
27 #include "JNIHelp.h"
28
29 #define NATIVE_METHOD(className, functionName, signature) \
30 { #functionName, signature, (void*)(className ## _ ## functionName) }
31
32 /************************************************************************
33 * DatagramPacket
34 */
35
36 jfieldID dp_addressID;
37 jfieldID dp_portID;
38 jfieldID dp_bufID;
39 jfieldID dp_offsetID;
40 jfieldID dp_lengthID;
41 jfieldID dp_bufLengthID;
42
43 /*
44 * Class: java_net_DatagramPacket
45 * Method: init
46 * Signature: ()V
47 */
48 JNIEXPORT void JNICALL
DatagramPacket_init(JNIEnv * env,jclass cls)49 DatagramPacket_init (JNIEnv *env, jclass cls) {
50 dp_addressID = (*env)->GetFieldID(env, cls, "address",
51 "Ljava/net/InetAddress;");
52 CHECK_NULL(dp_addressID);
53 dp_portID = (*env)->GetFieldID(env, cls, "port", "I");
54 CHECK_NULL(dp_portID);
55 dp_bufID = (*env)->GetFieldID(env, cls, "buf", "[B");
56 CHECK_NULL(dp_bufID);
57 dp_offsetID = (*env)->GetFieldID(env, cls, "offset", "I");
58 CHECK_NULL(dp_offsetID);
59 dp_lengthID = (*env)->GetFieldID(env, cls, "length", "I");
60 CHECK_NULL(dp_lengthID);
61 dp_bufLengthID = (*env)->GetFieldID(env, cls, "bufLength", "I");
62 CHECK_NULL(dp_bufLengthID);
63 }
64
65 static JNINativeMethod gMethods[] = {
66 NATIVE_METHOD(DatagramPacket, init, "()V"),
67 };
68
register_java_net_DatagramPacket(JNIEnv * env)69 void register_java_net_DatagramPacket(JNIEnv* env) {
70 jniRegisterNativeMethods(env, "java/net/DatagramPacket", gMethods, NELEM(gMethods));
71 }
72