group__apr__atomic.html

apr函数库使用手册

      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
atomically increment an apr_uint32_t by 1 <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>mem</em>&nbsp;</td><td>pointer to the object </td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>old value pointed to by mem </dd></dl>
    </td>
  </tr>
</table>
<a class="anchor" name="ga0" doxytag="apr_atomic.h::apr_atomic_init" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> <a class="el" href="group__apr__errno.html#ga0">apr_status_t</a> apr_atomic_init           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__apr__pools.html#ga0">apr_pool_t</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>p</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
this function is required on some platforms to initialize the atomic operation's internal structures <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>p</em>&nbsp;</td><td>pool </td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>APR_SUCCESS on successful completion </dd></dl>
    </td>
  </tr>
</table>
<a class="anchor" name="ga1" doxytag="apr_atomic.h::apr_atomic_read32" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> apr_uint32_t apr_atomic_read32           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">volatile apr_uint32_t *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>mem</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
atomically read an apr_uint32_t from memory <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>mem</em>&nbsp;</td><td>the pointer </td></tr>
  </table>
</dl>
    </td>
  </tr>
</table>
<a class="anchor" name="ga2" doxytag="apr_atomic.h::apr_atomic_set32" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> void apr_atomic_set32           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">volatile apr_uint32_t *&nbsp;</td>
          <td class="mdname" nowrap> <em>mem</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td></td>
          <td class="md" nowrap>apr_uint32_t&nbsp;</td>
          <td class="mdname" nowrap> <em>val</em></td>
        </tr>
        <tr>
          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
atomically set an apr_uint32_t in memory <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>mem</em>&nbsp;</td><td>pointer to the object </td></tr>
    <tr><td></td><td valign=top><em>val</em>&nbsp;</td><td>value that the object will assume </td></tr>
  </table>
</dl>
    </td>
  </tr>
</table>
<a class="anchor" name="ga4" doxytag="apr_atomic.h::apr_atomic_sub32" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> void apr_atomic_sub32           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">volatile apr_uint32_t *&nbsp;</td>
          <td class="mdname" nowrap> <em>mem</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td></td>
          <td class="md" nowrap>apr_uint32_t&nbsp;</td>
          <td class="mdname" nowrap> <em>val</em></td>
        </tr>
        <tr>
          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
atomically subtract 'val' from an apr_uint32_t <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>mem</em>&nbsp;</td><td>pointer to the object </td></tr>
    <tr><td></td><td valign=top><em>val</em>&nbsp;</td><td>amount to subtract </td></tr>
  </table>
</dl>
    </td>
  </tr>
</table>
<a class="anchor" name="ga8" doxytag="apr_atomic.h::apr_atomic_xchg32" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> apr_uint32_t apr_atomic_xchg32           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">volatile apr_uint32_t *&nbsp;</td>
          <td class="mdname" nowrap> <em>mem</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td></td>
          <td class="md" nowrap>apr_uint32_t&nbsp;</td>
          <td class="mdname" nowrap> <em>val</em></td>
        </tr>
        <tr>
          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
exchange an apr_uint32_t's value with 'val'. <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>mem</em>&nbsp;</td><td>pointer to the value </td></tr>
    <tr><td></td><td valign=top><em>val</em>&nbsp;</td><td>what to swap it with </td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>the old value of *mem </dd></dl>
    </td>
  </tr>
</table>
<hr size="1"><address style="align: right;"><small>Generated on Mon Feb 7 13:18:25 2005 for Apache Portable Runtime by
<a href="../../../www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.7 </small></address>
</body>
</html>