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Try to avoid deadlock caused by 'ProjectSorter'

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See: https://www.pivotaltracker.com/story/show/166943765
This commit is contained in:
Kris De Volder
2019-06-26 16:17:09 -07:00
parent 246c1e4081
commit b445c56b69
1 changed files with 24 additions and 7 deletions
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31
headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/classpath/ClasspathListenerManager.java
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@@ -10,13 +10,13 @@
*******************************************************************************/
package org.springframework.tooling.jdt.ls.commons.classpath;
import java.util.Arrays;
import java.util.Comparator;
import java.util.function.Supplier;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jdt.core.ElementChangedEvent;
import org.eclipse.jdt.core.IElementChangedListener;
import org.eclipse.jdt.core.IJavaElement;
@@ -34,6 +34,22 @@ import org.springframework.tooling.jdt.ls.commons.Logger;
*/
public class ClasspathListenerManager {
Queue<Runnable> workQueue = new ConcurrentLinkedQueue<>();
Job worker = new Job("Processing JDT Change Events") {
{
setSystem(true);
}
@Override
protected IStatus run(IProgressMonitor monitor) {
while (!workQueue.isEmpty()) {
workQueue.remove().run();
}
return Status.OK_STATUS;
}
};
public interface ClasspathListener {
public abstract void classpathChanged(IJavaProject jp);
}
@@ -42,7 +58,8 @@ public class ClasspathListenerManager {
@Override
public void elementChanged(ElementChangedEvent event) {
visit(event.getDelta());
workQueue.add(() -> visit(event.getDelta()));
worker.schedule();
}
private void visit(IJavaElementDelta delta) {