MemoryUtil.java 文件源码

@Override
public void handleNotification(Notification notification, Object handback) {
    if (notification.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
        System.out.println("0XDEADBEAF");
        GarbageCollectionNotificationInfo notifInfo = GarbageCollectionNotificationInfo.from((CompositeData) notification.getUserData());

        GcInfo gcInfo = notifInfo.getGcInfo();
        System.out.printf("Action: %s, %s, %s\n", notifInfo.getGcAction(), notifInfo.getGcCause(), notifInfo.getGcName());
        System.out.printf("Time: %d, %d, %d\n", gcInfo.getStartTime(), gcInfo.getEndTime(), gcInfo.getDuration());
        System.out.printf("Memory: %s, %s\n", gcInfo.getMemoryUsageBeforeGc().toString(), gcInfo.getMemoryUsageAfterGc().toString());



        Map<String, MemoryUsage> memBefore = notifInfo.getGcInfo().getMemoryUsageBeforeGc();
        Map<String, MemoryUsage> memAfter = notifInfo.getGcInfo().getMemoryUsageAfterGc();
        StringBuilder sb = new StringBuilder();
        sb.append("[").append(notifInfo.getGcAction()).append(" / ").append(notifInfo.getGcCause())
                .append(" / ").append(notifInfo.getGcName()).append(" / (");
        appendMemUsage(sb, memBefore);
        sb.append(") -> (");
        appendMemUsage(sb, memAfter);
        sb.append("), ").append(notifInfo.getGcInfo().getDuration()).append(" ms]");
        System.out.println(sb.toString());
    }
}