title: What are the consequences of doing a blocking call in `tExcTask`?
body: <p>Let say I add a job <code>excJobAdd(myFunc, ...)</code> which will get scheduled in the <code>excTask</code>. In the function I do a blocking call:</p>
  
  <pre><code>int myFunc(...) {
    ...
    semTake(...)
    ...
  }
  </code></pre>
  
  <p>Assuming I never come out of the blocking call. What are the consequences?</p>
  
  <p>One thing I can think of is:</p>
  
  <ul>
  <li>All subsequent jobs to <code>excTask</code> will be blocked</li>
  </ul>