>match_results</span></code></a> instances onto a queue,
        while another thread pops them off the other end), otherwise use a separate
        instance of <a class="link" href="../ref/match_results.html" title="match_results"><code class="computeroutput"><span class="identifier">match_results</span></code></a>
        per thread.
      </p>
<p>
        The <a class="link" href="../ref/posix.html" title="POSIX Compatible C API's">POSIX API functions</a> are
        all re-entrant and thread safe, regul