| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| import sun.hotspot.WhiteBox; |
| |
| // All strings in archived classes are shared |
| public class GCStressApp { |
| static WhiteBox wb = WhiteBox.getWhiteBox(); |
| static int[] arr; |
| |
| static String get_shared_string() { |
| String shared_str = "GCStressApp_shared_string"; |
| return shared_str; |
| } |
| |
| static String get_shared_string1() { |
| String shared_str1 = "GCStressApp_shared_string1"; |
| return shared_str1; |
| } |
| |
| static void allocAlot() { |
| try { |
| Random random = new Random(); |
| for (int i = 0; i < 1024 * 1024; i++) { |
| int len = random.nextInt(10000); |
| arr = new int[len]; |
| } |
| } catch (java.lang.OutOfMemoryError e) { } |
| } |
| |
| static void runGC() { |
| wb.fullGC(); |
| } |
| |
| public static void main(String args[]) throws Exception { |
| if (!wb.isSharedClass(GCStressApp.class)) { |
| System.out.println("GCStressApp is not shared. Possibly there was a mapping failure."); |
| return; |
| } |
| |
| if (wb.areSharedStringsIgnored()) { |
| System.out.println("Shared strings are ignored."); |
| return; |
| } |
| |
| Object refs = wb.getResolvedReferences(GCStressApp.class); |
| if (wb.isShared(refs)) { |
| String shared_str = get_shared_string(); |
| String shared_str1 = get_shared_string1(); |
| |
| if (!wb.isShared(shared_str)) { |
| throw new RuntimeException("FAILED. GCStressApp_shared_string is not shared"); |
| } |
| |
| if (!wb.isShared(shared_str1)) { |
| throw new RuntimeException("FAILED. GCStressApp_shared_string1 is not shared"); |
| } |
| |
| allocAlot(); |
| runGC(); |
| runGC(); |
| runGC(); |
| |
| System.out.println("Passed"); |
| } else { |
| System.out.println( |
| "No cached resolved references. Open archive heap data is not used."); |
| } |
| } |
| } |