Examples with Reference java.lang.ref.Reference used on opensource projects

Example 66 with Reference

use of java.lang.ref.Reference in project freemarker by apache.

the class TransformBlock method getSortedNamedArgs.

/**
 * Returns the named args by source-code order; it's not meant to be used during template execution, too slow for
 * that!
 */
private List getSortedNamedArgs() {
    Reference ref = sortedNamedArgsCache;
    if (ref != null) {
        List res = (List) ref.get();
        if (res != null)
            return res;
    }
    List res = MiscUtil.sortMapOfExpressions(namedArgs);
    sortedNamedArgsCache = new SoftReference(res);
    return res;
}

Example 67 with Reference

use of java.lang.ref.Reference in project freemarker by apache.

the class ClassIntrospectorBuilder method build.

/**
 * Returns an instance that is possibly shared (singleton). Note that this comes with its own "shared lock",
 * since everyone who uses this object will have to lock with that common object.
 */
ClassIntrospector build() {
    if ((methodAppearanceFineTuner == null || methodAppearanceFineTuner instanceof SingletonCustomizer) && (methodSorter == null || methodSorter instanceof SingletonCustomizer)) {
        // Instance can be cached.
        ClassIntrospector instance;
        synchronized (INSTANCE_CACHE) {
            Reference instanceRef = (Reference) INSTANCE_CACHE.get(this);
            instance = instanceRef != null ? (ClassIntrospector) instanceRef.get() : null;
            if (instance == null) {
                // prevent any aliasing issues
                ClassIntrospectorBuilder thisClone = (ClassIntrospectorBuilder) clone();
                instance = new ClassIntrospector(thisClone, new Object(), true, true);
                INSTANCE_CACHE.put(thisClone, new WeakReference(instance, INSTANCE_CACHE_REF_QUEUE));
            }
        }
        removeClearedReferencesFromInstanceCache();
        return instance;
    } else {
        // BeansWrapper.
        return new ClassIntrospector(this, new Object(), true, false);
    }
}

Example 68 with Reference

use of java.lang.ref.Reference in project ovirt-engine by oVirt.

the class ReapedMapTest method setUpGCExpectations.

@SuppressWarnings({ "unchecked", "rawtypes" })
private void setUpGCExpectations(final int gcAfter) {
    ReferenceQueue<Integer> queue = mock(ReferenceQueue.class);
    map = new ReapedMap<>(10000, false, queue);
    final IdAwareReference ref = mock(IdAwareReference.class);
    when(ref.getKey()).thenReturn("three").thenReturn(null);
    // the gcAfter queue poll simulates a GC event and triggers deletion
    // on the reapable map
    when(queue.poll()).thenAnswer(new Answer<Reference<Integer>>() {

        private int times = 0;

        @Override
        public Reference<Integer> answer(InvocationOnMock invocation) throws Throwable {
            return times++ == gcAfter ? ref : null;
        }
    });
}

Example 69 with Reference

use of java.lang.ref.Reference in project openj9 by eclipse.

the class Test_Reference method test_enqueue.

/**
 * @tests java.lang.ref.Reference#enqueue()
 */
@Test
public void test_enqueue() {
    ReferenceQueue rq = new ReferenceQueue();
    obj = new Object();
    Reference ref = new SoftReference(obj, rq);
    AssertJUnit.assertTrue("Enqueue failed.", (!ref.isEnqueued()) && ((ref.enqueue()) && (ref.isEnqueued())));
    if (isJava8 || disableClearBeforeEnqueue) {
        AssertJUnit.assertTrue("Not properly enqueued.", rq.poll().get() == obj);
    } else {
        AssertJUnit.assertTrue("Not properly enqueued.", rq.poll().get() == null);
    }
    // This fails.
    AssertJUnit.assertTrue("Should remain enqueued.", !ref.isEnqueued());
    AssertJUnit.assertTrue("Can not enqueue twice.", (!ref.enqueue()) && (rq.poll() == null));
    rq = new ReferenceQueue();
    obj = new Object();
    ref = new WeakReference(obj, rq);
    AssertJUnit.assertTrue("Enqueue failed2.", (!ref.isEnqueued()) && ((ref.enqueue()) && (ref.isEnqueued())));
    if (isJava8 || disableClearBeforeEnqueue) {
        AssertJUnit.assertTrue("Not properly enqueued2.", rq.poll().get() == obj);
    } else {
        AssertJUnit.assertTrue("Not properly enqueued2.", rq.poll().get() == null);
    }
    // This fails.
    AssertJUnit.assertTrue("Should remain enqueued2.", !ref.isEnqueued());
    AssertJUnit.assertTrue("Can not enqueue twice2.", (!ref.enqueue()) && (rq.poll() == null));
}

Example 70 with Reference

use of java.lang.ref.Reference in project openj9 by eclipse.

the class Test_Reference method test_get.

/**
 * @tests java.lang.ref.Reference#get()
 */
@Test
public void test_get() {
    // SM.
    obj = new Object();
    Reference ref = new WeakReference(obj, new ReferenceQueue());
    AssertJUnit.assertTrue("Get succeeded.", ref.get() == obj);
}