Examples of com.hazelcast.core.OutOfMemoryHandler

com.hazelcast.core.OutOfMemoryHandler

Handler for OutOfMemoryError

When an OutOfMemoryError is caught by Hazelcast threads, OutOfMemoryHandler is called for ALL HazelcastInstances knows by current JVM (actually ClassLoader).

Warning: OutOfMemoryHandler may not be called although JVM throws OutOfMemoryError. Because error may be thrown from an external (user thread) thread and Hazelcast may not be informed about OutOfMemoryError.

@see OutOfMemoryError @see Hazelcast#setOutOfMemoryHandler(OutOfMemoryHandler)

        HazelcastInstance[] instances = removeRegisteredInstances();
        if (instances.length == 0) {
            return;
        }


        OutOfMemoryHandler h = clientHandler;
        if (h != null) {
            try {
                h.onOutOfMemory(outOfMemoryError, instances);
            } catch (Throwable ignored) {
            }
        }


        h = handler;
        if (h != null) {
            try {
                h.onOutOfMemory(outOfMemoryError, instances);
            } catch (Throwable ignored) {
            }
        }
    }

        OutOfMemoryErrorDispatcher.clear();
    }


    @Test
    public void onOutOfMemoryOutOfMemory(){
        OutOfMemoryHandler handler = mock(OutOfMemoryHandler.class);
        OutOfMemoryError oome = new OutOfMemoryError();
        HazelcastInstance hz1 = mock(HazelcastInstance.class);


        OutOfMemoryErrorDispatcher.register(hz1);
        OutOfMemoryErrorDispatcher.setHandler(handler);

        HazelcastInstance[] instances = removeRegisteredInstances();
        if (instances.length == 0) {
            return;
        }


        OutOfMemoryHandler h = clientHandler;
        if (h != null) {
            try {
                h.onOutOfMemory(outOfMemoryError, instances);
            } catch (Throwable ignored) {
            }
        }


        h = handler;
        if (h != null) {
            try {
                h.onOutOfMemory(outOfMemoryError, instances);
            } catch (Throwable ignored) {
            }
        }
    }

Related Classes of com.hazelcast.core.OutOfMemoryHandler

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