1 /*
   2  * Copyright (c) 2014, 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 TestGCLogRotationViaJcmd.java
  26  * @bug 7090324
  27  * @summary test for gc log rotation via jcmd
  28  * @library /testlibrary
  29  * @modules java.base/sun.misc
  30  *          java.management
  31  * @run main/othervm -Xloggc:test.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=3 TestGCLogRotationViaJcmd
  32  *
  33  */
  34 import jdk.test.lib.*;
  35 import java.io.File;
  36 import java.io.FilenameFilter;
  37 
  38 public class TestGCLogRotationViaJcmd {
  39 
  40     static final File currentDirectory = new File(".");
  41     static final String LOG_FILE_NAME = "test.log";
  42     static final int NUM_LOGS = 3;
  43 
  44     static FilenameFilter logFilter = new FilenameFilter() {
  45         @Override
  46         public boolean accept(File dir, String name) {
  47             return name.startsWith(LOG_FILE_NAME);
  48         }
  49     };
  50 
  51     public static void main(String[] args) throws Exception {
  52         // Grab the pid from the current java process
  53         String pid = Integer.toString(ProcessTools.getProcessId());
  54 
  55         // Create a JDKToolLauncher
  56         JDKToolLauncher jcmd = JDKToolLauncher.create("jcmd")
  57                                               .addToolArg(pid)
  58                                               .addToolArg("GC.rotate_log");
  59 
  60         for (int times = 1; times < NUM_LOGS; times++) {
  61             // Run jcmd <pid> GC.rotate_log
  62             ProcessBuilder pb = new ProcessBuilder(jcmd.getCommand());
  63 
  64             // Make sure we didn't crash
  65             OutputAnalyzer output = new OutputAnalyzer(pb.start());
  66             output.shouldHaveExitValue(0);
  67         }
  68 
  69         // GC log check
  70         File[] logs = currentDirectory.listFiles(logFilter);
  71         if (logs.length != NUM_LOGS) {
  72             throw new Error("There are only " + logs.length
  73                                               + " logs instead " + NUM_LOGS);
  74         }
  75 
  76     }
  77 
  78 }
  79