1 /* 2 * Copyright (c) 2011, 2012, 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 package com.apple.jobjc; 26 27 import javax.tools.annotation.GenerateNativeHeader; 28 29 /* No native methods here, but the constants are needed in the supporting JNI code */ 30 @GenerateNativeHeader 31 public class Function { 32 private static native long getFxnPtrForFunctionName(final String functionName); 33 private static native long getFxnPtrForFunctionNameAndLib(final long libPtr, final String functionName); 34 35 final long fxnPtr; 36 37 Function(final long fxnPtr) { 38 this.fxnPtr = fxnPtr; 39 } 40 41 public Function(final String name) { 42 this(getFxnPtr(name)); 43 } 44 45 public Function(final MacOSXFramework framework, final String name) { 46 this(getFxnPtr(name, framework)); 47 } 48 49 static long getFxnPtr(final String name){ 50 long fxnPtr = getFxnPtrForFunctionName(name); 51 if(fxnPtr == 0) throw new RuntimeException("Function pointer for " + name + " not found in runtime."); 52 return fxnPtr; 53 } 54 55 static long getFxnPtr(final String name, final MacOSXFramework framework){ 56 long fxnPtr = 0; 57 for(int i = 0; fxnPtr == 0 && i < framework.nativeLibPtrs.length; i++){ 58 fxnPtr = getFxnPtrForFunctionNameAndLib(framework.nativeLibPtrs[i], name); 59 if(fxnPtr != 0) return fxnPtr; 60 } 61 throw new RuntimeException("Function pointer for " + name + " not found in framework " + framework + "."); 62 } 63 }