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