1 /*

     2  * Copyright (c) 2014, 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  * @run main/othervm -Xloggc:test.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=3 TestGCLogRotationViaJcmd

    30  *

    31  */

    32 import com.oracle.java.testlibrary.*;

    33 import java.io.File;

    34 import java.io.FilenameFilter;

    35 

    36 public class TestGCLogRotationViaJcmd {

    37 

    38     static final File currentDirectory = new File(".");

    39     static final String LOG_FILE_NAME = "test.log";

    40     static final int NUM_LOGS = 3;

    41 

    42     static FilenameFilter logFilter = new FilenameFilter() {

    43         @Override

    44         public boolean accept(File dir, String name) {

    45             return name.startsWith(LOG_FILE_NAME);

    46         }

    47     };

    48 

    49     public static void main(String[] args) throws Exception {

    50         // Grab the pid from the current java process

    51         String pid = Integer.toString(ProcessTools.getProcessId());

    52 

    53         // Create a JDKToolLauncher

    54         JDKToolLauncher jcmd = JDKToolLauncher.create("jcmd")

    55                                               .addToolArg(pid)

    56                                               .addToolArg("GC.rotate_log");

    57 

    58         for (int times = 1; times < NUM_LOGS; times++) {

    59             // Run jcmd <pid> GC.rotate_log

    60             ProcessBuilder pb = new ProcessBuilder(jcmd.getCommand());

    61 

    62             // Make sure we didn't crash

    63             OutputAnalyzer output = new OutputAnalyzer(pb.start());

    64             output.shouldHaveExitValue(0);

    65         }

    66 

    67         // GC log check

    68         File[] logs = currentDirectory.listFiles(logFilter);

    69         if (logs.length != NUM_LOGS) {

    70             throw new Error("There are only " + logs.length

    71                                               + " logs instead " + NUM_LOGS);

    72         }

    73 

    74     }

    75 

    76 }

    77