Omaha #3132 - removing duplicated com.raytheon.uf.viz.core
Former-commit-id:f51ceee718[formerlyaedf89c00b] [formerlyf51ceee718[formerlyaedf89c00b] [formerlyc49eabbb45[formerly 94468f09bd626bd2ff26e7312ceede154f427664]]] Former-commit-id:c49eabbb45Former-commit-id:113bcace66[formerlyd24b29f7b2] Former-commit-id:aed5540042
This commit is contained in:
Steve Harris
parent
ecf26b3ac5
commit
a7e18342d9
2 changed files with 0 additions and 179 deletions
|
|
@ -1,83 +0,0 @@
|
|||
/**
|
||||
* This software was developed and / or modified by Raytheon Company,
|
||||
* pursuant to Contract DG133W-05-CQ-1067 with the US Government.
|
||||
*
|
||||
* U.S. EXPORT CONTROLLED TECHNICAL DATA
|
||||
* This software product contains export-restricted data whose
|
||||
* export/transfer/disclosure is restricted by U.S. law. Dissemination
|
||||
* to non-U.S. persons whether in the United States or abroad requires
|
||||
* an export license or other authorization.
|
||||
*
|
||||
* Contractor Name: Raytheon Company
|
||||
* Contractor Address: 6825 Pine Street, Suite 340
|
||||
* Mail Stop B8
|
||||
* Omaha, NE 68106
|
||||
* 402.291.0100
|
||||
*
|
||||
* See the AWIPS II Master Rights File ("Master Rights File.pdf") for
|
||||
* further licensing information.
|
||||
**/
|
||||
package com.raytheon.uf.viz.core.reflect;
|
||||
|
||||
import org.eclipse.osgi.framework.internal.core.AbstractBundle;
|
||||
import org.eclipse.osgi.framework.internal.core.BundleHost;
|
||||
import org.eclipse.osgi.internal.loader.BundleLoader;
|
||||
import org.eclipse.osgi.internal.loader.BundleLoaderProxy;
|
||||
import org.eclipse.osgi.service.resolver.BundleDescription;
|
||||
import org.osgi.framework.Bundle;
|
||||
import org.osgi.framework.BundleReference;
|
||||
|
||||
/**
|
||||
* Utility class to get the BundleLoader object associated with a Bundle, to
|
||||
* potentially synchronize against that object.
|
||||
*
|
||||
* <pre>
|
||||
*
|
||||
* SOFTWARE HISTORY
|
||||
*
|
||||
* Date Ticket# Engineer Description
|
||||
* ------------ ---------- ----------- --------------------------
|
||||
* Aug 13, 2014 3500 bclement Initial creation
|
||||
*
|
||||
* </pre>
|
||||
*
|
||||
* @author bclement
|
||||
* @version 1.0
|
||||
* @see BundleSynchronizer
|
||||
*/
|
||||
public class BundleLoaderGetter {
|
||||
|
||||
private BundleLoaderGetter() {
|
||||
}
|
||||
|
||||
/**
|
||||
* Attempts to retrieve the BundleLoader associated with the bundle. Returns
|
||||
* the BundleLoader or null if it could not be retrieved.
|
||||
*
|
||||
* @param bundle
|
||||
* the bundle to retrieve the associated BundleLoader for
|
||||
* @return the BundleLoader or null
|
||||
*/
|
||||
@SuppressWarnings("restriction")
|
||||
protected static BundleLoader getBundleLoader(Bundle bundle) {
|
||||
BundleLoader rval = null;
|
||||
if (bundle instanceof AbstractBundle) {
|
||||
BundleDescription bundleDesc = ((AbstractBundle) bundle)
|
||||
.getBundleDescription();
|
||||
if (bundleDesc != null) {
|
||||
Object o = bundleDesc.getUserObject();
|
||||
if (!(o instanceof BundleLoaderProxy)) {
|
||||
if (o instanceof BundleReference)
|
||||
o = ((BundleReference) o).getBundle();
|
||||
if (o instanceof BundleHost)
|
||||
o = ((BundleHost) o).getLoaderProxy();
|
||||
}
|
||||
if (o instanceof BundleLoaderProxy) {
|
||||
rval = ((BundleLoaderProxy) o).getBundleLoader();
|
||||
}
|
||||
}
|
||||
}
|
||||
return rval;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,96 +0,0 @@
|
|||
/**
|
||||
* This software was developed and / or modified by Raytheon Company,
|
||||
* pursuant to Contract DG133W-05-CQ-1067 with the US Government.
|
||||
*
|
||||
* U.S. EXPORT CONTROLLED TECHNICAL DATA
|
||||
* This software product contains export-restricted data whose
|
||||
* export/transfer/disclosure is restricted by U.S. law. Dissemination
|
||||
* to non-U.S. persons whether in the United States or abroad requires
|
||||
* an export license or other authorization.
|
||||
*
|
||||
* Contractor Name: Raytheon Company
|
||||
* Contractor Address: 6825 Pine Street, Suite 340
|
||||
* Mail Stop B8
|
||||
* Omaha, NE 68106
|
||||
* 402.291.0100
|
||||
*
|
||||
* See the AWIPS II Master Rights File ("Master Rights File.pdf") for
|
||||
* further licensing information.
|
||||
**/
|
||||
package com.raytheon.uf.viz.core.reflect;
|
||||
|
||||
import org.eclipse.osgi.framework.internal.core.BundleRepository;
|
||||
import org.eclipse.osgi.internal.loader.BundleLoader;
|
||||
import org.osgi.framework.Bundle;
|
||||
|
||||
/**
|
||||
* If a call to BundleWiring.getClassLoader() is invoked on a thread other than
|
||||
* main/UI thread, then there is a possible deadlock if the application shuts
|
||||
* down while the BundleWiring.getClassLoader() call is still going. The
|
||||
* BundleLoader and BundleRepository of the Framework are the primary resources
|
||||
* that are in contention in this deadlock scenario, due to the BundleRepository
|
||||
* being used as a synchronization lock both deep in
|
||||
* bundleWiring.getClassloader() and in Framework shutdown code. The other
|
||||
* resource used as a synchronization lock and causing the deadlock is the
|
||||
* BundleLoader associated with the bundle. When BundleLoader.findClass() is
|
||||
* called, it results in a lock on the BundleLoader and then a lock on the
|
||||
* BundleRepository. This happens when the DefaultClassLoader loads a class.
|
||||
*
|
||||
* Therefore to avoid this deadlock, if you are going to call
|
||||
* BundleWiring.getClassLoader() you should attempt synchronize against the
|
||||
* BundleLoader and the BundleRepository. This will ensure the call to
|
||||
* getClassLoader() can finish and then release synchronization locks of both
|
||||
* the BundleRepository and BundleLoader.
|
||||
*
|
||||
* If we fail to get the BundleLoader or BundleRepository, then you should
|
||||
* proceed onwards anyway because the odds of the application shutting down at
|
||||
* the same time as the call to BundleWiring.getClassLoader() is still running
|
||||
* is low. Even if that occurs, the odds are further reduced that the two
|
||||
* threads will synchronize against the BundleLoader and the BundleRepository at
|
||||
* the same time and deadlock.
|
||||
*
|
||||
* <pre>
|
||||
*
|
||||
* SOFTWARE HISTORY
|
||||
*
|
||||
* Date Ticket# Engineer Description
|
||||
* ------------ ---------- ----------- --------------------------
|
||||
* Aug 13, 2014 3500 bclement Initial creation
|
||||
*
|
||||
* </pre>
|
||||
*
|
||||
* @author bclement
|
||||
* @version 1.0
|
||||
*/
|
||||
public class BundleSynchronizer {
|
||||
|
||||
private BundleSynchronizer() {
|
||||
}
|
||||
|
||||
/**
|
||||
* Attempts to synchronize with the bundle's BundleLoader and
|
||||
* BundleRepository objects before running the runner. If either the
|
||||
* BundleLoader or the BundleRepository are unable to be retrieved from the
|
||||
* bundle, the runner is ran anyway since the likelihood of a deadlock is
|
||||
* relatively small.
|
||||
*
|
||||
* @param runner
|
||||
* @param bundle
|
||||
* @see BundleLoaderGetter#getBundleLoader(Bundle)
|
||||
* @see BundleRepositoryGetter#getFrameworkBundleRepository(Bundle)
|
||||
*/
|
||||
protected static void runSynchedWithBundle(Runnable runner, Bundle bundle) {
|
||||
BundleRepository repo = BundleRepositoryGetter
|
||||
.getFrameworkBundleRepository(bundle);
|
||||
BundleLoader loader = BundleLoaderGetter.getBundleLoader(bundle);
|
||||
if (repo != null && loader != null) {
|
||||
synchronized (loader) {
|
||||
synchronized (repo) {
|
||||
runner.run();
|
||||
}
|
||||
}
|
||||
} else {
|
||||
runner.run();
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue