1 /* 2 * Copyright (c) 2002, 2023, 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 package sun.nio.ch; 27 28 public class NativeThread { 29 private final Thread thread; 30 31 private NativeThread(Thread thread) { 32 this.thread = thread; 33 } 34 35 Thread thread() { 36 return thread; 37 } 38 39 static NativeThread current() { 40 Thread t = Thread.currentThread(); 41 if (t.isVirtual()) { 42 return new NativeThread(t); 43 } else { 44 return null; 45 } 46 } 47 48 static NativeThread currentNativeThread() { 49 return null; 50 } 51 52 void signal() { 53 throw new UnsupportedOperationException(); 54 } 55 56 static boolean isVirtualThread(NativeThread nt) { 57 return nt != null; 58 } 59 60 static boolean isNativeThread(NativeThread nt) { 61 return false; 62 } 63 }