group__apr__proc__mutex.html

apr函数库使用手册

<dl compact><dt><b>Warning:</b></dt><dd>Check APR_HAS_foo_SERIALIZE defines to see if the platform supports APR_LOCK_foo. Only APR_LOCK_DEFAULT is portable. </dd></dl>
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<a class="anchor" name="ga10" doxytag="apr_proc_mutex.h::apr_proc_mutex_defname" ></a><p>
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          <td class="md" nowrap valign="top"> const char* apr_proc_mutex_defname           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
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Display the name of the default mutex: APR_LOCK_DEFAULT     </td>
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<a class="anchor" name="ga6" doxytag="apr_proc_mutex.h::apr_proc_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_proc_mutex_destroy           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__proc__mutex.html#ga0">apr_proc_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </td>
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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="ga3" doxytag="apr_proc_mutex.h::apr_proc_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_proc_mutex_lock           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__proc__mutex.html#ga0">apr_proc_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </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="ga8" doxytag="apr_proc_mutex.h::apr_proc_mutex_lockfile" ></a><p>
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          <td class="md" nowrap valign="top"> const char* apr_proc_mutex_lockfile           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__proc__mutex.html#ga0">apr_proc_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </td>
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Return the name of the lockfile for the mutex, or NULL if the mutex doesn't use a lock file     </td>
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<a class="anchor" name="ga9" doxytag="apr_proc_mutex.h::apr_proc_mutex_name" ></a><p>
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          <td class="md" nowrap valign="top"> const char* apr_proc_mutex_name           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__proc__mutex.html#ga0">apr_proc_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mutex</em>          </td>
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<p>
Display the name of the mutex, as it relates to the actual method used. This matches the valid options for Apache's AcceptMutex directive <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 name of the mutex </td></tr>
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<a class="anchor" name="ga11" doxytag="apr_proc_mutex.h::apr_proc_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_proc_mutex_pool_get           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="group__apr__proc__mutex.html#ga0">apr_proc_mutex_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>theproc_mutex</em>          </td>
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Get the pool used by this proc_mutex. <dl compact><dt><b>Returns:</b></dt><dd>apr_pool_t the pool </dd></dl>
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<a class="anchor" name="ga4" doxytag="apr_proc_mutex.h::apr_proc_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_proc_mutex_trylock           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__proc__mutex.html#ga0">apr_proc_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="ga5" doxytag="apr_proc_mutex.h::apr_proc_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_proc_mutex_unlock           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__proc__mutex.html#ga0">apr_proc_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>
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    <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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