| /* |
| * Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * - Neither the name of Oracle nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* |
| * This source code is provided to illustrate the usage of a given feature |
| * or technique and has been deliberately simplified. Additional steps |
| * required for a production-quality application, such as security checks, |
| * input validation and proper error handling, might not be present in |
| * this sample code. |
| */ |
| |
| |
| /* |
| * This script demonstrates "getMBeanAttribute" |
| * and "setMBeanAttribute" functions. Instead of using |
| * MXBean proxy or script wrapper object returned by |
| * 'mbean' function, this file uses direct get/set MBean |
| * attribute functions. |
| * |
| * To use this particular script, load this script file in |
| * script console prompt and call verboseGC or verboseClass |
| * functions. These functions based on events such as |
| * heap threshold crossing a given limit. i.e., A timer thread |
| * can keep checking for threshold event and then turn on |
| * verbose:gc or verbose:class based on expected event. |
| |
| */ |
| |
| /** |
| * Get or set verbose GC flag. |
| * |
| * @param flag verbose mode flag [optional] |
| * |
| * If flag is not passed verboseGC returns current |
| * flag value. |
| */ |
| function verboseGC(flag) { |
| if (flag == undefined) { |
| // no argument passed. interpret this as 'get' |
| return getMBeanAttribute("java.lang:type=Memory", "Verbose"); |
| } else { |
| return setMBeanAttribute("java.lang:type=Memory", "Verbose", flag); |
| } |
| } |
| |
| /** |
| * Get or set verbose class flag. |
| * |
| * @param flag verbose mode flag [optional] |
| * |
| * If flag is not passed verboseClass returns current |
| * flag value. |
| */ |
| function verboseClass(flag) { |
| if (flag == undefined) { |
| // no argument passed. interpret this as 'get' |
| return getMBeanAttribute("java.lang:type=ClassLoading", "Verbose"); |
| } else { |
| return setMBeanAttribute("java.lang:type=ClassLoading", "Verbose", flag); |
| } |
| } |