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 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 69 void register_java_net_DatagramPacket(JNIEnv* env) { 70 jniRegisterNativeMethods(env, "java/net/DatagramPacket", gMethods, NELEM(gMethods)); 71 } 72
