Examples with MemoryNotificationInfo java.lang.management.MemoryNotificationInfo used on opensource projects

Example 16 with MemoryNotificationInfo

use of java.lang.management.MemoryNotificationInfo in project btrace by btraceio.

the class BTraceRuntime method initMemoryListener.

private void initMemoryListener() {
    initThreadPool();
    memoryListener = new NotificationListener() {

        @Override
        @SuppressWarnings("FutureReturnValueIgnored")
        public void handleNotification(Notification notif, Object handback) {
            boolean entered = BTraceRuntime.enter(BTraceRuntime.this);
            try {
                String notifType = notif.getType();
                if (notifType.equals(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED)) {
                    CompositeData cd = (CompositeData) notif.getUserData();
                    final MemoryNotificationInfo info = MemoryNotificationInfo.from(cd);
                    String name = info.getPoolName();
                    final LowMemoryHandler handler = lowMemoryHandlerMap.get(name);
                    if (handler != null) {
                        threadPool.submit(new Runnable() {

                            @Override
                            public void run() {
                                boolean entered = BTraceRuntime.enter(BTraceRuntime.this);
                                try {
                                    if (handler.trackUsage) {
                                        handler.invoke(clazz, null, info.getUsage());
                                    } else {
                                        handler.invoke(clazz, null, (Object[]) null);
                                    }
                                } catch (Throwable th) {
                                } finally {
                                    if (entered) {
                                        BTraceRuntime.leave();
                                    }
                                }
                            }
                        });
                    }
                }
            } finally {
                if (entered) {
                    BTraceRuntime.leave();
                }
            }
        }
    };
}