Examples with OperationCanceledException org.eclipse.core.runtime.OperationCanceledException used on opensource projects

Example 51 with OperationCanceledException

use of org.eclipse.core.runtime.OperationCanceledException in project eclipse.platform.text by eclipse.

the class FileBufferOperationAction method doRun.

protected final void doRun(final IFile[] files, final IPath location, final IFileBufferOperation fileBufferOperation) {
    Job job = new Job(fileBufferOperation.getOperationName()) {

        @Override
        protected IStatus run(IProgressMonitor monitor) {
            IStatus status;
            try {
                int ticks = 100;
                SubMonitor subMonitor = SubMonitor.convert(monitor, fFileBufferOperation.getOperationName(), ticks);
                IPath[] locations;
                if (files != null) {
                    ticks -= 30;
                    locations = generateLocations(files, subMonitor.split(30));
                } else
                    locations = new IPath[] { location };
                if (locations != null && locations.length > 0) {
                    FileBufferOperationRunner runner = new FileBufferOperationRunner(FileBuffers.getTextFileBufferManager(), getShell());
                    runner.execute(locations, fileBufferOperation, subMonitor.split(ticks));
                }
                status = Status.OK_STATUS;
            } catch (OperationCanceledException e) {
                // $NON-NLS-1$
                status = new Status(IStatus.CANCEL, EditorsUI.PLUGIN_ID, IStatus.OK, "", null);
            } catch (CoreException e) {
                // $NON-NLS-1$
                status = new Status(IStatus.ERROR, EditorsUI.PLUGIN_ID, IStatus.OK, "", e);
            }
            return status;
        }
    };
    job.setUser(true);
    job.schedule();
}

Example 52 with OperationCanceledException

use of org.eclipse.core.runtime.OperationCanceledException in project eclipse.platform.text by eclipse.

the class FindInWorkingSetActionDelegate method createQuery.

@Override
protected ISearchQuery createQuery(TextSearchQueryProvider provider, String searchForString) throws CoreException {
    IWorkbenchPage page = getWorkbenchPage();
    if (page != null) {
        IWorkingSetManager manager = PlatformUI.getWorkbench().getWorkingSetManager();
        IWorkingSetSelectionDialog dialog = manager.createWorkingSetSelectionDialog(page.getWorkbenchWindow().getShell(), true);
        if (dialog.open() == Window.OK) {
            IWorkingSet[] workingSets = dialog.getSelection();
            if (workingSets != null) {
                return provider.createQuery(searchForString, workingSets);
            }
        }
    }
    throw new OperationCanceledException();
}

Example 53 with OperationCanceledException

use of org.eclipse.core.runtime.OperationCanceledException in project eclipse.platform.text by eclipse.

the class RetrieverAction method run.

@Override
public void run() {
    IWorkbenchPage page = getWorkbenchPage();
    if (page == null) {
        return;
    }
    TextSearchQueryProvider provider = TextSearchQueryProvider.getPreferred();
    String searchForString = getSearchForString(page);
    if (searchForString.length() == 0) {
        MessageDialog.openInformation(getShell(), SearchMessages.RetrieverAction_dialog_title, SearchMessages.RetrieverAction_empty_selection);
        return;
    }
    try {
        ISearchQuery query = createQuery(provider, searchForString);
        if (query != null) {
            NewSearchUI.runQueryInBackground(query);
        }
    } catch (OperationCanceledException ex) {
    // action cancelled
    } catch (CoreException e) {
        ErrorDialog.openError(getShell(), SearchMessages.RetrieverAction_error_title, SearchMessages.RetrieverAction_error_message, e.getStatus());
    }
}

Example 54 with OperationCanceledException

use of org.eclipse.core.runtime.OperationCanceledException in project eclipse.platform.text by eclipse.

the class TextSearchVisitor method search.

public IStatus search(IFile[] files, IProgressMonitor monitor) {
    if (files.length == 0) {
        return fStatus;
    }
    fProgressMonitor = monitor == null ? new NullProgressMonitor() : monitor;
    fNumberOfScannedFiles = 0;
    fNumberOfFilesToScan = files.length;
    fCurrentFile = null;
    int maxThreads = fCollector.canRunInParallel() ? NUMBER_OF_LOGICAL_THREADS : 1;
    int jobCount = 1;
    if (maxThreads > 1) {
        jobCount = (files.length + FILES_PER_JOB - 1) / FILES_PER_JOB;
    }
    // $NON-NLS-1$
    final JobGroup jobGroup = new TextSearchJobGroup("Text Search", maxThreads, jobCount);
    long startTime = TRACING ? System.currentTimeMillis() : 0;
    Job monitorUpdateJob = new Job(SearchMessages.TextSearchVisitor_progress_updating_job) {

        private int fLastNumberOfScannedFiles = 0;

        @Override
        public IStatus run(IProgressMonitor inner) {
            while (!inner.isCanceled()) {
                // Propagate user cancellation to the JobGroup.
                if (fProgressMonitor.isCanceled()) {
                    jobGroup.cancel();
                    break;
                }
                IFile file;
                int numberOfScannedFiles;
                synchronized (fLock) {
                    file = fCurrentFile;
                    numberOfScannedFiles = fNumberOfScannedFiles;
                }
                if (file != null) {
                    String fileName = file.getName();
                    Object[] args = { fileName, Integer.valueOf(numberOfScannedFiles), Integer.valueOf(fNumberOfFilesToScan) };
                    fProgressMonitor.subTask(Messages.format(SearchMessages.TextSearchVisitor_scanning, args));
                    int steps = numberOfScannedFiles - fLastNumberOfScannedFiles;
                    fProgressMonitor.worked(steps);
                    fLastNumberOfScannedFiles += steps;
                }
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    return Status.OK_STATUS;
                }
            }
            return Status.OK_STATUS;
        }
    };
    try {
        String taskName = fSearchPattern.pattern().length() == 0 ? SearchMessages.TextSearchVisitor_filesearch_task_label : Messages.format(SearchMessages.TextSearchVisitor_textsearch_task_label, fSearchPattern.pattern());
        fProgressMonitor.beginTask(taskName, fNumberOfFilesToScan);
        monitorUpdateJob.setSystem(true);
        monitorUpdateJob.schedule();
        try {
            fCollector.beginReporting();
            Map<IFile, IDocument> documentsInEditors = PlatformUI.isWorkbenchRunning() ? evalNonFileBufferDocuments() : Collections.emptyMap();
            int filesPerJob = (files.length + jobCount - 1) / jobCount;
            IFile[] filesByLocation = new IFile[files.length];
            System.arraycopy(files, 0, filesByLocation, 0, files.length);
            // Sorting files to search by location allows to more easily reuse
            // search results from one file to the other when they have same location
            Arrays.sort(filesByLocation, (o1, o2) -> {
                if (o1 == o2) {
                    return 0;
                }
                if (o1.getLocation() == o2.getLocation()) {
                    return 0;
                }
                if (o1.getLocation() == null) {
                    return +1;
                }
                if (o2.getLocation() == null) {
                    return -1;
                }
                return o1.getLocation().toString().compareTo(o2.getLocation().toString());
            });
            for (int first = 0; first < filesByLocation.length; first += filesPerJob) {
                int end = Math.min(filesByLocation.length, first + filesPerJob);
                Job job = new TextSearchJob(filesByLocation, first, end, documentsInEditors);
                job.setJobGroup(jobGroup);
                job.schedule();
            }
            // The monitorUpdateJob is managing progress and cancellation,
            // so it is ok to pass a null monitor into the job group.
            jobGroup.join(0, null);
            if (fProgressMonitor.isCanceled())
                throw new OperationCanceledException(SearchMessages.TextSearchVisitor_canceled);
            fStatus.addAll(jobGroup.getResult());
            return fStatus;
        } catch (InterruptedException e) {
            throw new OperationCanceledException(SearchMessages.TextSearchVisitor_canceled);
        } finally {
            monitorUpdateJob.cancel();
        }
    } finally {
        fProgressMonitor.done();
        fCollector.endReporting();
        if (TRACING) {
            Object[] args = { Integer.valueOf(fNumberOfScannedFiles), Integer.valueOf(jobCount), Integer.valueOf(NUMBER_OF_LOGICAL_THREADS), Long.valueOf(System.currentTimeMillis() - startTime) };
            System.out.println(Messages.format("[TextSearch] Search duration for {0} files in {1} jobs using {2} threads: {3}ms", // $NON-NLS-1$
            args));
        }
    }
}

Example 55 with OperationCanceledException

use of org.eclipse.core.runtime.OperationCanceledException in project eclipse.platform.text by eclipse.

the class DocumentLineDiffer method initialize.

/**
 * (Re-)initializes the differ using the current reference and <code>DiffInitializer</code>.
 *
 * @since 3.2 protected for testing reasons, package visible before
 */
protected synchronized void initialize() {
    // make new incoming changes go into the queue of stored events, plus signal we can't restore.
    fState = INITIALIZING;
    if (fRightDocument == null)
        return;
    // there is no point in receiving updates before the job we get a new copy of the document for diffing
    fIgnoreDocumentEvents = true;
    if (fLeftDocument != null) {
        fLeftDocument.removeDocumentListener(this);
        fLeftDocument = null;
        fLeftEquivalent = null;
    }
    // if there already is a job:
    // return if it has not started yet, cancel it if already running
    final Job oldJob = fInitializationJob;
    if (oldJob != null) {
        // don't chain up jobs if there is one waiting already.
        if (oldJob.getState() == Job.WAITING) {
            oldJob.wakeUp(INITIALIZE_DELAY);
            return;
        }
        oldJob.cancel();
    }
    fInitializationJob = new Job(QuickDiffMessages.quickdiff_initialize) {

        /*
			 * This is run in a different thread. As the documents might be synchronized, never ever
			 * access the documents in a synchronized section or expect deadlocks. See
			 * https://bugs.eclipse.org/bugs/show_bug.cgi?id=44692
			 */
        @Override
        public IStatus run(IProgressMonitor monitor) {
            // It will return relatively quickly as RangeDifferencer supports canceling
            if (oldJob != null)
                try {
                    oldJob.join();
                } catch (InterruptedException e) {
                    // will not happen as no one interrupts our thread
                    Assert.isTrue(false);
                }
            // 2:	get the reference document
            IQuickDiffReferenceProvider provider = fReferenceProvider;
            final IDocument left;
            try {
                left = provider == null ? null : provider.getReference(monitor);
            } catch (CoreException e) {
                synchronized (DocumentLineDiffer.this) {
                    if (isCanceled(monitor))
                        return Status.CANCEL_STATUS;
                    clearModel();
                    fireModelChanged();
                    return e.getStatus();
                }
            } catch (OperationCanceledException e) {
                return Status.CANCEL_STATUS;
            }
            // Getting our own copies of the documents for offline diffing.
            // 
            // We need to make sure that we do get all document modifications after
            // copying the documents as we want to re-inject them later on to become consistent.
            // fRightDocument, but not subject to change
            IDocument right = fRightDocument;
            // the copy of the actual (right) document
            IDocument actual = null;
            // the copy of the reference (left) document
            IDocument reference = null;
            synchronized (DocumentLineDiffer.this) {
                // 4: take an early exit if the documents are not valid
                if (left == null || right == null) {
                    if (isCanceled(monitor))
                        return Status.CANCEL_STATUS;
                    clearModel();
                    fireModelChanged();
                    return Status.OK_STATUS;
                }
                // set the reference document
                fLeftDocument = left;
                // start listening to document events.
                fIgnoreDocumentEvents = false;
            }
            // accessing the reference document from a different thread - reference providers need
            // to be able to deal with this.
            left.addDocumentListener(DocumentLineDiffer.this);
            // create the reference copy - note that any changes on the
            // reference will trigger re-initialization anyway
            reference = createCopy(left);
            if (reference == null)
                return Status.CANCEL_STATUS;
            // create the actual copy
            Object lock = null;
            if (right instanceof ISynchronizable)
                lock = ((ISynchronizable) right).getLockObject();
            if (lock != null) {
                // the document
                synchronized (lock) {
                    synchronized (DocumentLineDiffer.this) {
                        if (isCanceled(monitor))
                            return Status.CANCEL_STATUS;
                        fStoredEvents.clear();
                        actual = createUnprotectedCopy(right);
                    }
                }
            } else {
                // b) cannot lock the document
                // Now this is fun. The reference documents may be PartiallySynchronizedDocuments
                // which will result in a deadlock if they get changed externally before we get
                // our exclusive copies.
                // Here's what we do: we try over and over (without synchronization) to get copies
                // without interleaving modification. If there is a document change, we just repeat.
                int i = 0;
                do {
                    // this is an arbitrary emergency exit in case a referenced document goes nuts
                    if (i++ == 100)
                        return new Status(IStatus.ERROR, TextEditorPlugin.PLUGIN_ID, IStatus.OK, NLSUtility.format(QuickDiffMessages.quickdiff_error_getting_document_content, new Object[] { left.getClass(), right.getClass() }), null);
                    synchronized (DocumentLineDiffer.this) {
                        if (isCanceled(monitor))
                            return Status.CANCEL_STATUS;
                        fStoredEvents.clear();
                    }
                    // access documents non synchronized:
                    // get an exclusive copy of the actual document
                    actual = createCopy(right);
                    synchronized (DocumentLineDiffer.this) {
                        if (isCanceled(monitor))
                            return Status.CANCEL_STATUS;
                        if (fStoredEvents.size() == 0 && actual != null)
                            break;
                    }
                } while (true);
            }
            IHashFunction hash = new DJBHashFunction();
            DocumentEquivalenceClass leftEquivalent = new DocumentEquivalenceClass(reference, hash);
            fLeftEquivalent = leftEquivalent;
            IRangeComparator ref = new DocEquivalenceComparator(leftEquivalent, null);
            DocumentEquivalenceClass rightEquivalent = new DocumentEquivalenceClass(actual, hash);
            fRightEquivalent = rightEquivalent;
            IRangeComparator act = new DocEquivalenceComparator(rightEquivalent, null);
            ArrayList<QuickDiffRangeDifference> diffs = asQuickDiffRangeDifference(RangeDifferencer.findRanges(fRangeDiffFactory, monitor, ref, act));
            // re-inject stored events to get up to date.
            synchronized (DocumentLineDiffer.this) {
                if (isCanceled(monitor))
                    return Status.CANCEL_STATUS;
                // set the new differences so we can operate on them
                fDifferences = diffs;
            }
            // re-inject events accumulated in the meantime.
            try {
                do {
                    DocumentEvent event;
                    synchronized (DocumentLineDiffer.this) {
                        if (isCanceled(monitor))
                            return Status.CANCEL_STATUS;
                        if (fStoredEvents.isEmpty()) {
                            // we are back in sync with the life documents
                            fInitializationJob = null;
                            fState = SYNCHRONIZED;
                            fLastDifference = null;
                            // replace the private documents with the actual
                            leftEquivalent.setDocument(left);
                            rightEquivalent.setDocument(right);
                            break;
                        }
                        event = fStoredEvents.remove(0);
                    }
                    // access documents non synchronized:
                    IDocument copy = null;
                    if (event.fDocument == right)
                        copy = actual;
                    else if (event.fDocument == left)
                        copy = reference;
                    else
                        Assert.isTrue(false);
                    // copy the event to inject it into our diff copies
                    // don't modify the original event! See https://bugs.eclipse.org/bugs/show_bug.cgi?id=134227
                    event = new DocumentEvent(copy, event.fOffset, event.fLength, event.fText);
                    handleAboutToBeChanged(event);
                    // inject the event into our private copy
                    actual.replace(event.fOffset, event.fLength, event.fText);
                    handleChanged(event);
                } while (true);
            } catch (BadLocationException e) {
                left.removeDocumentListener(DocumentLineDiffer.this);
                clearModel();
                initialize();
                return Status.CANCEL_STATUS;
            }
            fireModelChanged();
            return Status.OK_STATUS;
        }

        private boolean isCanceled(IProgressMonitor monitor) {
            return fInitializationJob != this || monitor != null && monitor.isCanceled();
        }

        private void clearModel() {
            synchronized (DocumentLineDiffer.this) {
                fLeftDocument = null;
                fLeftEquivalent = null;
                fInitializationJob = null;
                fStoredEvents.clear();
                fLastDifference = null;
                fDifferences.clear();
            }
        }

        /**
         * Creates a copy of <code>document</code> and catches any
         * exceptions that may occur if the document is modified concurrently.
         * Only call this method in a synchronized block if the document is
         * an ISynchronizable and has been locked, as document.get() is called
         * and may result in a deadlock otherwise.
         *
         * @param document the document to create a copy of
         * @return a copy of the document, or <code>null</code> if an exception was thrown
         */
        private IDocument createCopy(IDocument document) {
            Assert.isNotNull(document);
            // this fixes https://bugs.eclipse.org/bugs/show_bug.cgi?id=56091
            try {
                return createUnprotectedCopy(document);
            } catch (NullPointerException e) {
            } catch (ArrayStoreException e) {
            } catch (IndexOutOfBoundsException e) {
            } catch (ConcurrentModificationException e) {
            } catch (NegativeArraySizeException e) {
            }
            return null;
        }

        private IDocument createUnprotectedCopy(IDocument document) {
            return new Document(document.get());
        }
    };
    fInitializationJob.setSystem(true);
    fInitializationJob.setPriority(Job.DECORATE);
    fInitializationJob.setProperty(IProgressConstants.NO_IMMEDIATE_ERROR_PROMPT_PROPERTY, Boolean.TRUE);
    fInitializationJob.schedule(INITIALIZE_DELAY);
}