Main.java 文件源码

private static void installGCMonitoring() {
    List<GarbageCollectorMXBean> gcbeans = java.lang.management.ManagementFactory.getGarbageCollectorMXBeans();
    for (GarbageCollectorMXBean gcbean : gcbeans) {
        NotificationEmitter emitter = (NotificationEmitter) gcbean;
        System.out.println(gcbean.getName());

        NotificationListener listener = (notification, handback) -> {
            if (notification.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
                GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) notification.getUserData());

                long duration = info.getGcInfo().getDuration();
                String gctype = info.getGcAction();

                System.out.println(gctype + ": - "
                        + info.getGcInfo().getId() + ", "
                        + info.getGcName()
                        + " (from " + info.getGcCause() + ") " + duration + " milliseconds");

            }
        };

        emitter.addNotificationListener(listener, null, null);
    }
}