group__apr__thread__mutex.html

apr函数库使用手册

 </pre> </td></tr>
    <tr><td></td><td valign=top><em>pool</em>&nbsp;</td><td>the pool from which to allocate the mutex. </td></tr>
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<dl compact><dt><b>Warning:</b></dt><dd>Be cautious in using APR_THREAD_MUTEX_DEFAULT. While this is the most optimial mutex based on a given platform's performance charateristics, it will behave as either a nested or an unnested lock. </dd></dl>
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<a class="anchor" name="ga5" doxytag="apr_thread_mutex.h::apr_thread_mutex_destroy" ></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="group__apr__errno.html#ga0">apr_status_t</a> apr_thread_mutex_destroy           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__thread__mutex.html#ga0">apr_thread_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </td>
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<p>
Destroy the mutex and free the memory associated with the lock. <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td></td><td valign=top><em>mutex</em>&nbsp;</td><td>the mutex to destroy. </td></tr>
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<a class="anchor" name="ga2" doxytag="apr_thread_mutex.h::apr_thread_mutex_lock" ></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="group__apr__errno.html#ga0">apr_status_t</a> apr_thread_mutex_lock           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__thread__mutex.html#ga0">apr_thread_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Acquire the lock for the given mutex. If the mutex is already locked, the current thread will be put to sleep until the lock becomes available. <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td></td><td valign=top><em>mutex</em>&nbsp;</td><td>the mutex on which to acquire the lock. </td></tr>
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<a class="anchor" name="ga6" doxytag="apr_thread_mutex.h::apr_thread_mutex_pool_get" ></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="group__apr__pools.html#ga0">apr_pool_t</a>* apr_thread_mutex_pool_get           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="group__apr__thread__mutex.html#ga0">apr_thread_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>thethread_mutex</em>          </td>
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<p>
Get the pool used by this thread_mutex. <dl compact><dt><b>Returns:</b></dt><dd>apr_pool_t the pool </dd></dl>
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<a class="anchor" name="ga3" doxytag="apr_thread_mutex.h::apr_thread_mutex_trylock" ></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="group__apr__errno.html#ga0">apr_status_t</a> apr_thread_mutex_trylock           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__thread__mutex.html#ga0">apr_thread_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </td>
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<p>
Attempt to acquire the lock for the given mutex. If the mutex has already been acquired, the call returns immediately with APR_EBUSY. Note: it is important that the <a class="el" href="group___a_p_r___s_t_a_t_u_s___i_s.html#ga44">APR_STATUS_IS_EBUSY(s)</a> macro be used to determine if the return value was APR_EBUSY, for portability reasons. <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td></td><td valign=top><em>mutex</em>&nbsp;</td><td>the mutex on which to attempt the lock acquiring. </td></tr>
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<a class="anchor" name="ga4" doxytag="apr_thread_mutex.h::apr_thread_mutex_unlock" ></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="group__apr__errno.html#ga0">apr_status_t</a> apr_thread_mutex_unlock           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__thread__mutex.html#ga0">apr_thread_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Release the lock for the given mutex. <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>mutex</em>&nbsp;</td><td>the mutex from which to release the lock. </td></tr>
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