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<div class="title">Mutexes<div class="ingroups"><a class="el" href="../../db/d82/group__sys__layer.html">Porting (system abstraction layer)</a> » <a class="el" href="../../de/d7c/group__sys__os.html">OS abstraction layer</a></div></div> </div>
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Collaboration diagram for Mutexes:</div>
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Functions</h2></td></tr>
<tr class="memitem:ga16336ce68b741e98204102ca4bc84dd9"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d3b/group__sys__mutex.html#ga16336ce68b741e98204102ca4bc84dd9">sys_mutex_free</a> (<a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> *<a class="el" href="../../d5/d9a/ubthread_8c.html#a18b6be9ca0cec4b0643171232d6f10de">mutex</a>)</td></tr>
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<tr class="memitem:ga4d4eb9afe5965fa2661dd54ff55d616a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d3b/group__sys__mutex.html#ga4d4eb9afe5965fa2661dd54ff55d616a">sys_mutex_lock</a> (<a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> *<a class="el" href="../../d5/d9a/ubthread_8c.html#a18b6be9ca0cec4b0643171232d6f10de">mutex</a>)</td></tr>
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<tr class="memitem:ga38e7dae1fd88b338eb1cd97f110f3897"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d3b/group__sys__mutex.html#ga38e7dae1fd88b338eb1cd97f110f3897">sys_mutex_new</a> (<a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> *<a class="el" href="../../d5/d9a/ubthread_8c.html#a18b6be9ca0cec4b0643171232d6f10de">mutex</a>)</td></tr>
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<tr class="memitem:ga3f392725971dc837aa56dd7e45fa7ca8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d3b/group__sys__mutex.html#ga3f392725971dc837aa56dd7e45fa7ca8">sys_mutex_set_invalid</a> (<a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> *<a class="el" href="../../d5/d9a/ubthread_8c.html#a18b6be9ca0cec4b0643171232d6f10de">mutex</a>)</td></tr>
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<tr class="memitem:ga5568f68898fe9d5735f9ce2f665624fb"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d3b/group__sys__mutex.html#ga5568f68898fe9d5735f9ce2f665624fb">sys_mutex_unlock</a> (<a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> *<a class="el" href="../../d5/d9a/ubthread_8c.html#a18b6be9ca0cec4b0643171232d6f10de">mutex</a>)</td></tr>
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<tr class="memitem:gaebe83ba90a6d9c23cdb3eb5d49562c4a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d3b/group__sys__mutex.html#gaebe83ba90a6d9c23cdb3eb5d49562c4a">sys_mutex_valid</a> (<a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> *<a class="el" href="../../d5/d9a/ubthread_8c.html#a18b6be9ca0cec4b0643171232d6f10de">mutex</a>)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Mutexes are recommended to correctly handle priority inversion, especially if you use LWIP_CORE_LOCKING . </p>
<h2 class="groupheader">Function Documentation</h2>
<a id="ga16336ce68b741e98204102ca4bc84dd9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga16336ce68b741e98204102ca4bc84dd9">◆ </a></span>sys_mutex_free()</h2>
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<td class="memname">void sys_mutex_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> * </td>
<td class="paramname"><em>mutex</em></td><td>)</td>
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<p>Delete a semaphore </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">mutex</td><td>the mutex to delete </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d56/sys__arch_8c_source.html#l00148">148</a> of file <a class="el" href="../../d9/d56/sys__arch_8c_source.html">sys_arch.c</a>.</p>
<p class="reference">References <a class="el" href="../../d5/d9a/ubthread_8c_source.html#l00043">mutex</a>, <a class="el" href="../../dd/d1b/ubthread_8h_source.html#l00070">ubthread_mutex_list::mutex</a>, and <a class="el" href="../../d5/d9a/ubthread_8c_source.html#l00077">ubthread_mutex_destroy()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga4d4eb9afe5965fa2661dd54ff55d616a">◆ </a></span>sys_mutex_lock()</h2>
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<td class="memname">void sys_mutex_lock </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> * </td>
<td class="paramname"><em>mutex</em></td><td>)</td>
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<p>Lock a mutex </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">mutex</td><td>the mutex to lock </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d56/sys__arch_8c_source.html#l00152">152</a> of file <a class="el" href="../../d9/d56/sys__arch_8c_source.html">sys_arch.c</a>.</p>
<p class="reference">References <a class="el" href="../../d5/d9a/ubthread_8c_source.html#l00043">mutex</a>, <a class="el" href="../../dd/d1b/ubthread_8h_source.html#l00070">ubthread_mutex_list::mutex</a>, and <a class="el" href="../../d5/d9a/ubthread_8c_source.html#l00088">ubthread_mutex_lock()</a>.</p>
<p class="reference">Referenced by <a class="el" href="../../d3/d8f/mem_8c_source.html#l00603">mem_malloc()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga38e7dae1fd88b338eb1cd97f110f3897">◆ </a></span>sys_mutex_new()</h2>
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<td class="memname"><a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> sys_mutex_new </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> * </td>
<td class="paramname"><em>mutex</em></td><td>)</td>
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<p>Create a new mutex. Note that mutexes are expected to not be taken recursively by the lwIP code, so both implementation types (recursive or non-recursive) should work. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">mutex</td><td>pointer to the mutex to create </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>ERR_OK if successful, another err_t otherwise </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d56/sys__arch_8c_source.html#l00143">143</a> of file <a class="el" href="../../d9/d56/sys__arch_8c_source.html">sys_arch.c</a>.</p>
<p class="reference">References <a class="el" href="../../d6/d40/err_8h_source.html#l00063">ERR_OK</a>, <a class="el" href="../../d5/d9a/ubthread_8c_source.html#l00043">mutex</a>, <a class="el" href="../../dd/d1b/ubthread_8h_source.html#l00070">ubthread_mutex_list::mutex</a>, <a class="el" href="../../d6/d8a/fat__string_8h_source.html#l00017">NULL</a>, and <a class="el" href="../../dd/d1b/ubthread_8h.html#ab6bfc2169b55532821582f24b68dc855">ubthread_mutex_init()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga3f392725971dc837aa56dd7e45fa7ca8">◆ </a></span>sys_mutex_set_invalid()</h2>
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<td class="memname">void sys_mutex_set_invalid </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> * </td>
<td class="paramname"><em>mutex</em></td><td>)</td>
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<p>Set a mutex invalid so that sys_mutex_valid returns 0 </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5568f68898fe9d5735f9ce2f665624fb">◆ </a></span>sys_mutex_unlock()</h2>
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<td class="memname">void sys_mutex_unlock </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> * </td>
<td class="paramname"><em>mutex</em></td><td>)</td>
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<p>Unlock a mutex </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">mutex</td><td>the mutex to unlock </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d56/sys__arch_8c_source.html#l00156">156</a> of file <a class="el" href="../../d9/d56/sys__arch_8c_source.html">sys_arch.c</a>.</p>
<p class="reference">References <a class="el" href="../../d5/d9a/ubthread_8c_source.html#l00043">mutex</a>, <a class="el" href="../../dd/d1b/ubthread_8h_source.html#l00070">ubthread_mutex_list::mutex</a>, and <a class="el" href="../../d5/d9a/ubthread_8c_source.html#l00109">ubthread_mutex_unlock()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#gaebe83ba90a6d9c23cdb3eb5d49562c4a">◆ </a></span>sys_mutex_valid()</h2>
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<td class="memname">int sys_mutex_valid </td>
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<td class="paramtype"><a class="el" href="../../df/dc7/sys__arch_8h.html#a222e7d52225fc3453d7a2240b9209849">sys_mutex_t</a> * </td>
<td class="paramname"><em>mutex</em></td><td>)</td>
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<p>Check if a mutex is valid/allocated: return 1 for valid, 0 for invalid </p>
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