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<title>The Protothreads Library 1.4: pt-sem.h File Reference</title>
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<h1>pt-sem.h File Reference</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
Couting semaphores implemented on protothreads. 
<p>
<dl compact><dt><b>Author:</b></dt><dd>Adam Dunkels &lt;<a href="mailto:adam@sics.se">adam@sics.se</a>&gt; </dd></dl>

<p>
Definition in file <a class="el" href="a00021.html">pt-sem.h</a>.
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<code>#include &quot;<a class="el" href="a00022.html">pt.h</a>&quot;</code><br>

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<a href="a00021.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Data Structures</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00006.html">pt_sem</a></td></tr>

<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00016.html#gd7089c5dc86f12019f0361d82a75b04b">PT_SEM_INIT</a>(s, c)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Initialize a semaphore.  <a href="a00016.html#gd7089c5dc86f12019f0361d82a75b04b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00016.html#g386ff87a52a840512906f2940e229e2e">PT_SEM_WAIT</a>(<a class="el" href="a00005.html">pt</a>, s)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Wait for a semaphore.  <a href="a00016.html#g386ff87a52a840512906f2940e229e2e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00016.html#g1eaaf4d9d75e24582acc6440d7085f19">PT_SEM_SIGNAL</a>(<a class="el" href="a00005.html">pt</a>, s)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Signal a semaphore.  <a href="a00016.html#g1eaaf4d9d75e24582acc6440d7085f19"></a><br></td></tr>
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