1 /* 2 * Copyright (c) 2011, 2013, 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 28 public class Pointer <T> implements Comparable<Pointer<T>>{ 29 long ptr; 30 31 protected Pointer(final long ptr) { 32 this.ptr = ptr; 33 getNativeObjectLifecycleManager().begin(ptr); 34 } 35 36 @Override protected final synchronized void finalize() throws Throwable { 37 long pptr = ptr; 38 ptr = 0; 39 if (pptr != 0) getNativeObjectLifecycleManager().end(pptr); 40 } 41 42 protected NativeObjectLifecycleManager getNativeObjectLifecycleManager() { 43 return NativeObjectLifecycleManager.Nothing.INST; 44 } 45 46 @Override public boolean equals(Object o) { 47 return o instanceof Pointer && ptr == ((Pointer) o).ptr; 48 } 49 50 @Override public int hashCode() { return (int)(ptr^(ptr>>>32)); } 51 52 public int compareTo(Pointer<T> o) { 53 if(this==o || ptr==o.ptr) return 0; 54 if(ptr < o.ptr) return -1; 55 return 1; 56 } 57 }