1 /* 2 * Copyright (c) 2017, 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 25 /* 26 * @test 27 * @summary Write a lots of shared strings. 28 * @requires vm.cds.archived.java.heap 29 * @library /test/hotspot/jtreg/runtime/appcds /test/lib 30 * @modules jdk.jartool/sun.tools.jar 31 * @build HelloString 32 * @run driver SharedStringsStress 33 * @run main/othervm -XX:+UseStringDeduplication SharedStringsStress 34 * @run main/othervm -XX:-CompactStrings SharedStringsStress 35 */ 36 import java.io.File; 37 import java.io.FileOutputStream; 38 import java.io.OutputStreamWriter; 39 import java.io.PrintWriter; 40 import jdk.test.lib.process.OutputAnalyzer; 41 import jdk.test.lib.process.ProcessTools; 42 43 public class SharedStringsStress { 44 public static void main(String[] args) throws Exception { 45 String appJar = JarBuilder.build("SharedStringsStress", "HelloString"); 46 47 String sharedArchiveConfigFile = System.getProperty("user.dir") + File.separator + "SharedStringsStress_gen.txt"; 48 try (FileOutputStream fos = new FileOutputStream(sharedArchiveConfigFile)) { 49 PrintWriter out = new PrintWriter(new OutputStreamWriter(fos)); 50 out.println("VERSION: 1.0"); 51 out.println("@SECTION: String"); 52 out.println("31: shared_test_string_unique_14325"); 53 for (int i=0; i<100000; i++) { 54 String s = "generated_string " + i; 55 out.println(s.length() + ": " + s); 56 } 57 out.close(); 58 } 59 60 OutputAnalyzer dumpOutput = TestCommon.dump(appJar, TestCommon.list("HelloString"), 61 "-XX:SharedArchiveConfigFile=" + sharedArchiveConfigFile); 62 TestCommon.checkDump(dumpOutput); 63 OutputAnalyzer execOutput = TestCommon.exec(appJar, "HelloString"); 64 TestCommon.checkExec(execOutput); 65 } 66 }