Examples of org.eclipse.core.runtime.jobs.Job.cancel()

org.eclipse.core.runtime.jobs.Job.cancel()
Stops the job. If the job is currently waiting, it will be removed from the queue. If the job is sleeping, it will be discarded without having a chance to resume and its sleeping state will be cleared. If the job is currently executing, it will be asked to stop but there is no guarantee that it will do so. @return false if the job is currently running (and thus may notrespond to cancelation), and true in all other cases.

        // in case processing thread is handling a job
        thread.join();
      }
      Job job = this.progressJob;
      if (job != null) {
        job.cancel();
        job.join();
      }
    } catch (InterruptedException e) {
      // ignore
    }

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    void executeAnalysis() {
        outOfDate = false;
        synchronized (this) {
            Job oldJob = analysisJob;
            if (oldJob != null && oldJob.getState() != Job.NONE)
                oldJob.cancel();


            if (selectedFiles != null) {
                final AnalyseBundleResolutionJob tmp = new AnalyseBundleResolutionJob("importExportAnalysis", selectedFiles);
                tmp.setSystem(true);

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      // 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) {


      /*

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   * Uninstalls all components and dereferences any objects.
   */
  private void uninstall() {
    Job job= fInitializationJob;
    if (job != null)
      job.cancel();


    synchronized (this) {
      fState= SUSPENDED;
      fIgnoreDocumentEvents= true;
      fInitializationJob= null;

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   * @see org.eclipse.ui.internal.texteditor.quickdiff.ILineDifferExtension#suspend()
   */
  public void suspend() {
    Job job= fInitializationJob;
    if (job != null)
      job.cancel();
    
    synchronized (this) {
      fInitializationJob= null;
      if (fRightDocument != null)
        fRightDocument.removeDocumentListener(this);

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                        break;
                    }
                }
                return status;
            } finally {
                monitorUpdateJob.cancel();
            }
        } finally {
            progressMonitor.done();
        }
    }

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      // 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) {


      /*

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   * Uninstalls all components and dereferences any objects.
   */
  private void uninstall() {
    Job job= fInitializationJob;
    if (job != null)
      job.cancel();


    synchronized (this) {
      fState= SUSPENDED;
      fIgnoreDocumentEvents= true;
      fInitializationJob= null;

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   * @see org.eclipse.ui.internal.texteditor.quickdiff.ILineDifferExtension#suspend()
   */
  public void suspend() {
    Job job= fInitializationJob;
    if (job != null)
      job.cancel();


    synchronized (this) {
      fInitializationJob= null;
      if (fRightDocument != null)
        fRightDocument.removeDocumentListener(this);

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        // in case processing thread is handling a job
        thread.join();
      }
      Job job = this.progressJob;
      if (job != null) {
        job.cancel();
        job.join();
      }
    } catch (InterruptedException e) {
      // ignore
    }

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