TestStringSymbolTableStats.java revision 9727:f944761a3ce3 
1/*
2 * Copyright (c) 2013, 2015, 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 * @test TestStringSymbolTableStats.java
26 * @bug 8027476 8027455
27 * @summary Ensure that the G1TraceStringSymbolTableScrubbing prints the expected message.
28 * @key gc
29 * @library /testlibrary
30 * @modules java.base/sun.misc
31 *          java.management
32 */
33
34import jdk.test.lib.ProcessTools;
35import jdk.test.lib.OutputAnalyzer;
36
37public class TestStringSymbolTableStats {
38  public static void main(String[] args) throws Exception {
39
40    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
41                                                              "-XX:+UnlockExperimentalVMOptions",
42                                                              "-Xlog:gc+stringdedup=trace",
43                                                              SystemGCTest.class.getName());
44
45    OutputAnalyzer output = new OutputAnalyzer(pb.start());
46
47    System.out.println("Output:\n" + output.getOutput());
48
49    output.shouldContain("Cleaned string and symbol table");
50    output.shouldHaveExitValue(0);
51  }
52
53  static class SystemGCTest {
54    public static void main(String [] args) {
55      System.out.println("Calling System.gc()");
56      System.gc();
57    }
58  }
59}
60