Пример #1
0
  /**
   * Run all jobs in the work list (and any children they have) to completion. This method returns
   * <code>true</code> if all jobs were successfully completed. If all jobs were successfully
   * completed, then the worklist will be empty.
   *
   * <p>The scheduling of <code>Job</code>s uses two methods to maintain scheduling invariants:
   * <code>selectJobFromWorklist</code> selects a <code>SourceJob</code> from <code>worklist</code>
   * (a list of jobs that still need to be processed); <code>enforceInvariants</code> is called
   * before a pass is performed on a <code>SourceJob</code> and is responsible for ensuring all
   * dependencies are satisfied before the pass proceeds, i.e. enforcing any scheduling invariants.
   */
  public boolean runToCompletion() {
    boolean okay = true;

    while (okay && !worklist.isEmpty()) {
      SourceJob job = selectJobFromWorklist();

      if (Report.should_report(Report.frontend, 1)) {
        Report.report(1, "Running job " + job);
      }

      okay &= runAllPasses(job);

      if (job.completed()) {
        // the job has finished. Let's remove it from the map so it
        // can be garbage collected, and free up the AST.
        jobs.put(job.source(), COMPLETED_JOB);

        if (Report.should_report(Report.frontend, 1)) {
          Report.report(1, "Completed job " + job);
        }
      } else {
        // the job is not yet completed (although, it really
        // should be...)
        if (Report.should_report(Report.frontend, 1)) {
          Report.report(1, "Failed to complete job " + job);
        }
        worklist.add(job);
      }
    }

    if (Report.should_report(Report.frontend, 1))
      Report.report(1, "Finished all passes -- " + (okay ? "okay" : "failed"));

    return okay;
  }
Пример #2
0
  /**
   * Add a new <code>SourceJob</code> for the <code>Source source</code>, with AST <code>ast</code>.
   * A new job will be created if needed. If the <code>Source source</code> has already been
   * processed, and its job discarded to release resources, then <code>null</code> will be returned.
   */
  public SourceJob addJob(Source source, Node ast) {
    Object o = jobs.get(source);
    SourceJob job = null;
    if (o == COMPLETED_JOB) {
      // the job has already been completed.
      // We don't need to add a job
      return null;
    } else if (o == null) {
      // No appropriate job yet exists, we will create one.

      job = this.createSourceJob(source, ast);

      // record the job in the map and the worklist.
      jobs.put(source, job);
      worklist.addLast(job);

      if (Report.should_report(Report.frontend, 3)) {
        Report.report(3, "Adding job for " + source + " at the " + "request of job " + currentJob);
      }
    } else {
      job = (SourceJob) o;
    }

    // if the current source job caused this job to load, record the
    // dependency.
    if (currentJob instanceof SourceJob) {
      ((SourceJob) currentJob).addDependency(source);
    }

    return job;
  }