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

Example 41 with SoftReference

use of java.lang.ref.SoftReference in project intellij-community by JetBrains.

the class SmartPsiElementPointersTest method testSmartPointersSurvivePsiFileUnload.

public void testSmartPointersSurvivePsiFileUnload() throws IOException {
    final VirtualFile vfile = createChildData(myRoot, "X.txt");
    String xxx = "xxx";
    String text = xxx + " " + xxx + " " + xxx;
    setFileText(vfile, text);
    PsiFile psiFile = PsiManager.getInstance(getProject()).findFile(vfile);
    assertTrue(String.valueOf(psiFile), psiFile instanceof PsiPlainTextFile);
    SmartPointerManagerImpl manager = getPointerManager();
    TextRange range1 = TextRange.from(text.indexOf(xxx), xxx.length());
    SmartPsiFileRange pointer1 = manager.createSmartPsiFileRangePointer(psiFile, range1);
    TextRange range2 = TextRange.from(text.lastIndexOf(xxx), xxx.length());
    SmartPsiFileRange pointer2 = manager.createSmartPsiFileRangePointer(psiFile, range2);
    assertNotNull(FileDocumentManager.getInstance().getCachedDocument(vfile));
    SoftReference<PsiFile> ref = new SoftReference<>(psiFile);
    psiFile = null;
    while (ref.get() != null) {
        PlatformTestUtil.tryGcSoftlyReachableObjects();
    }
    assertNull(FileDocumentManager.getInstance().getCachedDocument(vfile));
    assertEquals(pointer1.getRange(), range1);
    WriteCommandAction.runWriteCommandAction(getProject(), () -> insertString(FileDocumentManager.getInstance().getDocument(vfile), 0, " "));
    assertEquals(range1.shiftRight(1), pointer1.getRange());
    assertEquals(range2.shiftRight(1), pointer2.getRange());
}

Example 42 with SoftReference

use of java.lang.ref.SoftReference in project wildfly by wildfly.

the class WorkCacheManager method lookupDone.

/**
     * Lookup an analysis in the fully done map.
     */
private ContainerAnalysis lookupDone(Class cls) {
    SoftReference ref = (SoftReference) workDone.get(cls);
    if (ref == null)
        return null;
    ContainerAnalysis ret = (ContainerAnalysis) ref.get();
    if (ret == null)
        // clear map entry if soft ref. was cleared.
        workDone.remove(cls);
    return ret;
}

Example 43 with SoftReference

use of java.lang.ref.SoftReference in project joda-time by JodaOrg.

the class ZoneInfoProvider method getZone.

//-----------------------------------------------------------------------
/**
     * If an error is thrown while loading zone data, the exception is logged
     * to system error and null is returned for this and all future requests.
     * 
     * @param id  the id to load
     * @return the loaded zone
     */
public DateTimeZone getZone(String id) {
    if (id == null) {
        return null;
    }
    Object obj = iZoneInfoMap.get(id);
    if (obj == null) {
        return null;
    }
    if (obj instanceof SoftReference<?>) {
        @SuppressWarnings("unchecked") SoftReference<DateTimeZone> ref = (SoftReference<DateTimeZone>) obj;
        DateTimeZone tz = ref.get();
        if (tz != null) {
            return tz;
        }
        // Reference cleared; load data again.
        return loadZoneData(id);
    } else if (id.equals(obj)) {
        // Load zone data for the first time.
        return loadZoneData(id);
    }
    // If this point is reached, mapping must link to another.
    return getZone((String) obj);
}

Example 44 with SoftReference

use of java.lang.ref.SoftReference in project robovm by robovm.

the class ReferenceQueueTest method test_remove.

/**
     * java.lang.ref.ReferenceQueue#remove()
     */
public void test_remove() {
    // store in a static so it won't be gc'ed because the jit
    // optimized it out
    b = new Boolean(true);
    SoftReference sr = new SoftReference(b, rq);
    sr.enqueue();
    try {
        assertTrue("Remove failed.", ((Boolean) rq.remove().get()).booleanValue());
    } catch (Exception e) {
        fail("Exception during the test : " + e.getMessage());
    }
    assertNull(rq.poll());
    sr.enqueue();
    class RemoveThread extends Thread {

        public void run() {
            try {
                rq.remove();
            } catch (InterruptedException ie) {
                isThrown = true;
            }
        }
    }
    RemoveThread rt = new RemoveThread();
    rt.start();
    try {
        Thread.sleep(100);
    } catch (InterruptedException ie) {
    }
    rt.interrupt();
    try {
        Thread.sleep(100);
    } catch (InterruptedException ie) {
    }
    assertTrue(isThrown);
    assertNull(rq.poll());
}

Example 45 with SoftReference

use of java.lang.ref.SoftReference in project robovm by robovm.

the class ReferenceQueueTest method test_removeJ.

/**
     * java.lang.ref.ReferenceQueue#remove(long)
     */
public void test_removeJ() {
    try {
        assertNull("Queue should be empty. (poll)", rq.poll());
        assertNull("Queue should be empty. (remove(1))", rq.remove((long) 1));
        Thread ct = new Thread(new ChildThread());
        ct.start();
        Reference ret = rq.remove(0L);
        assertNotNull("Delayed remove failed.", ret);
    } catch (InterruptedException e) {
        fail("InterruptedExeException during test : " + e.getMessage());
    } catch (Exception e) {
        fail("Exception during test : " + e.getMessage());
    }
    Object obj = new Object();
    WeakReference wr = new WeakReference(obj, rq);
    Boolean b = new Boolean(true);
    SoftReference sr = new SoftReference(b, rq);
    String str = "Test";
    PhantomReference pr = new PhantomReference(str, rq);
    pr.enqueue();
    wr.enqueue();
    sr.enqueue();
    try {
        Reference result = rq.remove(1L);
        assertTrue((Boolean) result.get());
        result = rq.remove(1L);
        assertEquals(obj, result.get());
        result = rq.remove(1L);
        assertNull(result.get());
    } catch (IllegalArgumentException e1) {
        fail("IllegalArgumentException was thrown.");
    } catch (InterruptedException e1) {
        fail("InterruptedException was thrown.");
    }
    rq = new ReferenceQueue();
    isThrown = false;
    assertNull(rq.poll());
    class RemoveThread extends Thread {

        public void run() {
            try {
                rq.remove(1000L);
            } catch (InterruptedException ie) {
                isThrown = true;
            }
        }
    }
    RemoveThread rt = new RemoveThread();
    rt.start();
    try {
        Thread.sleep(10);
    } catch (InterruptedException ie) {
    }
    rt.interrupt();
    try {
        Thread.sleep(10);
    } catch (InterruptedException ie) {
    }
    assertTrue(isThrown);
    assertNull(rq.poll());
    try {
        rq.remove(-1);
        fail("IllegalArgumentException expected.");
    } catch (IllegalArgumentException iae) {
    //expected
    } catch (InterruptedException e) {
        fail("Unexpected InterruptedException.");
    }
}