Method execute_

src/chunk.js:399–439

* Run a task. * Schedule the next round if there are more tasks. * @param {?IdleDeadline} idleDeadline * @return {boolean} Whether anything was executed. * @private

(idleDeadline)

   * @private
   */
  execute_(idleDeadline) {
    const t = this.nextTask_(/* opt_dequeue */ true);
    if (!t) {
      this.scheduledImmediateInvocation_ = false;
      this.durationOfLastExecution_ = 0;
      return false;
    }
    let before;
    try {
      before = Date.now();
      t.runTask_(idleDeadline);
    } finally {
      // We want to capture the time of the entire task duration including
      // scheduled immediate (from resolved promises) micro tasks.
      // Lacking a better way to do this we just scheduled 10 nested
      // micro tasks.
      resolved
        .then()
        .then()
        .then()
        .then()
        .then()
        .then()
        .then()
        .then()
        .then(() => {
          this.scheduledImmediateInvocation_ = false;
          this.durationOfLastExecution_ += Date.now() - before;
          dev().fine(
            TAG,
            t.getName_(),
            'Chunk duration',
            Date.now() - before,
            this.durationOfLastExecution_
          );

          this.schedule_();
        });
    }
    return true;
  }

  /**
   * Calls `execute_()` asynchronously.