| /* |
| * 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); |
| } |
| } |