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test/java/lang/management/ThreadMXBean/ResetPeakThreadCount.java

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rev 11832 : 8078896: Add @modules as needed to the jdk_svc tests
Reviewed-by: alanb, mchung
   1 /*
   2  * Copyright (c) 2003, 2013, 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
  26  * @bug     4892507 8020875 8021335
  27  * @summary Basic Test for the following reset methods:
  28  *          - ThreadMXBean.resetPeakThreadCount()
  29  * @author  Mandy Chung
  30  * @author  Jaroslav Bachorik
  31  *

  32  * @build ResetPeakThreadCount
  33  * @build ThreadDump
  34  * @run main/othervm ResetPeakThreadCount
  35  */
  36 
  37 import java.lang.management.*;
  38 
  39 public class ResetPeakThreadCount {
  40     // initial number of new threads started
  41     private static final int DAEMON_THREADS_1 = 8;
  42     private static final int EXPECTED_PEAK_DELTA_1 = 8;
  43 
  44     // Terminate half of the threads started
  45     private static final int TERMINATE_1 = 4;
  46 
  47     // start new threads but expected the peak unchanged
  48     private static final int DAEMON_THREADS_2 = 2;
  49     private static final int EXPECTED_PEAK_DELTA_2 = 0;
  50 
  51     // peak thread count reset before starting new threads


   1 /*
   2  * Copyright (c) 2003, 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
  26  * @bug     4892507 8020875 8021335
  27  * @summary Basic Test for the following reset methods:
  28  *          - ThreadMXBean.resetPeakThreadCount()
  29  * @author  Mandy Chung
  30  * @author  Jaroslav Bachorik
  31  *
  32  * @modules java.management
  33  * @build ResetPeakThreadCount
  34  * @build ThreadDump
  35  * @run main/othervm ResetPeakThreadCount
  36  */
  37 
  38 import java.lang.management.*;
  39 
  40 public class ResetPeakThreadCount {
  41     // initial number of new threads started
  42     private static final int DAEMON_THREADS_1 = 8;
  43     private static final int EXPECTED_PEAK_DELTA_1 = 8;
  44 
  45     // Terminate half of the threads started
  46     private static final int TERMINATE_1 = 4;
  47 
  48     // start new threads but expected the peak unchanged
  49     private static final int DAEMON_THREADS_2 = 2;
  50     private static final int EXPECTED_PEAK_DELTA_2 = 0;
  51 
  52     // peak thread count reset before starting new threads


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