1 /* 2 * Copyright (c) 2004, 2018, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package nsk.jvmti.scenarios.allocation.AP03; 25 26 import java.io.*; 27 import java.lang.reflect.*; 28 29 import nsk.share.*; 30 import nsk.share.jvmti.*; 31 32 public class ap03t001 extends DebugeeClass { 33 /* number of interations to provoke garbage collecting */ 34 final static int GC_TRIES = 1; 35 main(String[] argv)36 public static void main(String[] argv) { 37 argv = nsk.share.jvmti.JVMTITest.commonInit(argv); 38 39 // produce JCK-like exit status 40 System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE); 41 } 42 run(String argv[], PrintStream out)43 public static int run(String argv[], PrintStream out) { 44 return new ap03t001().runThis(argv, out); 45 } 46 47 private static ap03t001 catcher = null; 48 private static Wicket wicket = new Wicket(); 49 setTag(long tag)50 private native void setTag(long tag); 51 52 /* scaffold objects */ 53 static ArgumentHandler argHandler = null; 54 static Log log = null; 55 long timeout = 0; 56 int status = Consts.TEST_PASSED; 57 runThis(String argv[], PrintStream out)58 private int runThis(String argv[], PrintStream out) { 59 argHandler = new ArgumentHandler(argv); 60 log = new Log(out, argHandler); 61 timeout = argHandler.getWaitTime() * 60 * 1000; // milliseconds 62 63 ap03t001 holder = new ap03t001(); 64 log.display("Set tag for tested object"); 65 holder.setTag(1L); 66 // make an object collectable 67 holder = null; 68 69 // provoke GC and finalization 70 for (int i= 0; i < GC_TRIES; i++) { 71 System.gc(); 72 Runtime.getRuntime().runFinalization(); 73 } 74 75 wicket.waitFor(timeout); 76 log.display("Sync point: GC and Finalization have been called"); 77 78 if (catcher == null) { 79 log.complain("Tested object has not been catched during finalization"); 80 } 81 82 status = checkStatus(status); 83 return status; 84 } 85 finalize()86 protected void finalize() throws Throwable { 87 log.display("finalize() has been invoked"); 88 // restore strong reference to finalized object 89 catcher = this; 90 wicket.unlock(); 91 } 92 } 93