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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=11"/> <meta name="generator" content="Doxygen 1.9.3"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>Apache Portable Runtime: Atomic Operations</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr id="projectrow"> <td id="projectalign"> <div id="projectname">Apache Portable Runtime </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.9.3 --> <script type="text/javascript" src="menudata.js"></script> <script type="text/javascript" src="menu.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt MIT */ $(function() { initMenu('',false,false,'search.php','Search'); }); /* @license-end */ </script> <div id="main-nav"></div> </div><!-- top --> <div class="header"> <div class="summary"> <a href="#func-members">Functions</a> </div> <div class="headertitle"><div class="title">Atomic Operations</div></div> </div><!--header--> <div class="contents"> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a> Functions</h2></td></tr> <tr class="memitem:gaa89b4022de39ca4d1c2ae6715e888e97"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gaa89b4022de39ca4d1c2ae6715e888e97">apr_atomic_init</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p)</td></tr> <tr class="separator:gaa89b4022de39ca4d1c2ae6715e888e97"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gafba4de90e113d26536cff48418689771"><td class="memItemLeft" align="right" valign="top">apr_uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gafba4de90e113d26536cff48418689771">apr_atomic_read32</a> (volatile apr_uint32_t *mem)</td></tr> <tr class="separator:gafba4de90e113d26536cff48418689771"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gac689de9df18c093f66959227359328bb"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gac689de9df18c093f66959227359328bb">apr_atomic_set32</a> (volatile apr_uint32_t *mem, apr_uint32_t val)</td></tr> <tr class="separator:gac689de9df18c093f66959227359328bb"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga3ef16e13b679710fafd5196713e17433"><td class="memItemLeft" align="right" valign="top">apr_uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga3ef16e13b679710fafd5196713e17433">apr_atomic_add32</a> (volatile apr_uint32_t *mem, apr_uint32_t val)</td></tr> <tr class="separator:ga3ef16e13b679710fafd5196713e17433"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4603396650e844bd987f01358ccb4df1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga4603396650e844bd987f01358ccb4df1">apr_atomic_sub32</a> (volatile apr_uint32_t *mem, apr_uint32_t val)</td></tr> <tr class="separator:ga4603396650e844bd987f01358ccb4df1"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4af33da5aa6493ec321af14bedfc47a9"><td class="memItemLeft" align="right" valign="top">apr_uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga4af33da5aa6493ec321af14bedfc47a9">apr_atomic_inc32</a> (volatile apr_uint32_t *mem)</td></tr> <tr class="separator:ga4af33da5aa6493ec321af14bedfc47a9"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga7a8d16335fdcd27f2baca90df35ad300"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga7a8d16335fdcd27f2baca90df35ad300">apr_atomic_dec32</a> (volatile apr_uint32_t *mem)</td></tr> <tr class="separator:ga7a8d16335fdcd27f2baca90df35ad300"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae45c529f14f8489102382bd3fd4cce22"><td class="memItemLeft" align="right" valign="top">apr_uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gae45c529f14f8489102382bd3fd4cce22">apr_atomic_cas32</a> (volatile apr_uint32_t *mem, apr_uint32_t with, apr_uint32_t cmp)</td></tr> <tr class="separator:gae45c529f14f8489102382bd3fd4cce22"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga50850e462d65e0409d5a93a6b4ec26c6"><td class="memItemLeft" align="right" valign="top">apr_uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga50850e462d65e0409d5a93a6b4ec26c6">apr_atomic_xchg32</a> (volatile apr_uint32_t *mem, apr_uint32_t val)</td></tr> <tr class="separator:ga50850e462d65e0409d5a93a6b4ec26c6"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaabf8e658bc5c4c93c84520e7e021422e"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gaabf8e658bc5c4c93c84520e7e021422e">apr_atomic_read64</a> (volatile apr_uint64_t *mem)</td></tr> <tr class="separator:gaabf8e658bc5c4c93c84520e7e021422e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaca335823ac1ec13f60df3a848b393938"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gaca335823ac1ec13f60df3a848b393938">apr_atomic_set64</a> (volatile apr_uint64_t *mem, apr_uint64_t val)</td></tr> <tr class="separator:gaca335823ac1ec13f60df3a848b393938"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gafb476ad399f33ed4858601bbaa8f4073"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gafb476ad399f33ed4858601bbaa8f4073">apr_atomic_add64</a> (volatile apr_uint64_t *mem, apr_uint64_t val)</td></tr> <tr class="separator:gafb476ad399f33ed4858601bbaa8f4073"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gab9587444053ce84342c4d4b3fe3864a1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gab9587444053ce84342c4d4b3fe3864a1">apr_atomic_sub64</a> (volatile apr_uint64_t *mem, apr_uint64_t val)</td></tr> <tr class="separator:gab9587444053ce84342c4d4b3fe3864a1"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga2d091caea5fe759a89c1ff8f9231060b"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga2d091caea5fe759a89c1ff8f9231060b">apr_atomic_inc64</a> (volatile apr_uint64_t *mem)</td></tr> <tr class="separator:ga2d091caea5fe759a89c1ff8f9231060b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga2a813357a6b24c352a13ebbb666444f4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga2a813357a6b24c352a13ebbb666444f4">apr_atomic_dec64</a> (volatile apr_uint64_t *mem)</td></tr> <tr class="separator:ga2a813357a6b24c352a13ebbb666444f4"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga0ee75db52d67c0035082162a78342448"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga0ee75db52d67c0035082162a78342448">apr_atomic_cas64</a> (volatile apr_uint64_t *mem, apr_uint64_t with, apr_uint64_t cmp)</td></tr> <tr class="separator:ga0ee75db52d67c0035082162a78342448"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4077bb0c735f1d72fd050163c6c39419"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga4077bb0c735f1d72fd050163c6c39419">apr_atomic_xchg64</a> (volatile apr_uint64_t *mem, apr_uint64_t val)</td></tr> <tr class="separator:ga4077bb0c735f1d72fd050163c6c39419"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaf756715eff35bd8b6665bc3f2a27fbd2"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#gaf756715eff35bd8b6665bc3f2a27fbd2">apr_atomic_casptr</a> (volatile void **mem, void *with, const void *cmp)</td></tr> <tr class="separator:gaf756715eff35bd8b6665bc3f2a27fbd2"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga952e9a57b5df8d79ed2295b6fdc2c43c"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__atomic.html#ga952e9a57b5df8d79ed2295b6fdc2c43c">apr_atomic_xchgptr</a> (volatile void **mem, void *with)</td></tr> <tr class="separator:ga952e9a57b5df8d79ed2295b6fdc2c43c"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <h2 class="groupheader">Function Documentation</h2> <a id="ga3ef16e13b679710fafd5196713e17433" name="ga3ef16e13b679710fafd5196713e17433"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga3ef16e13b679710fafd5196713e17433">◆ </a></span>apr_atomic_add32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint32_t apr_atomic_add32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >atomically add 'val' to an apr_uint32_t </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> <tr><td class="paramname">val</td><td>amount to add </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>old value pointed to by mem </dd></dl> </div> </div> <a id="gafb476ad399f33ed4858601bbaa8f4073" name="gafb476ad399f33ed4858601bbaa8f4073"></a> <h2 class="memtitle"><span class="permalink"><a href="#gafb476ad399f33ed4858601bbaa8f4073">◆ </a></span>apr_atomic_add64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_atomic_add64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint64_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >atomically add 'val' to an apr_uint64_t </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> <tr><td class="paramname">val</td><td>amount to add </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>old value pointed to by mem </dd></dl> </div> </div> <a id="gae45c529f14f8489102382bd3fd4cce22" name="gae45c529f14f8489102382bd3fd4cce22"></a> <h2 class="memtitle"><span class="permalink"><a href="#gae45c529f14f8489102382bd3fd4cce22">◆ </a></span>apr_atomic_cas32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint32_t apr_atomic_cas32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>with</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>cmp</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >compare an apr_uint32_t's value with 'cmp'. If they are the same swap the value with 'with' </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the value </td></tr> <tr><td class="paramname">with</td><td>what to swap it with </td></tr> <tr><td class="paramname">cmp</td><td>the value to compare it to </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>the old value of *mem </dd></dl> </div> </div> <a id="ga0ee75db52d67c0035082162a78342448" name="ga0ee75db52d67c0035082162a78342448"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga0ee75db52d67c0035082162a78342448">◆ </a></span>apr_atomic_cas64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_atomic_cas64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint64_t </td> <td class="paramname"><em>with</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint64_t </td> <td class="paramname"><em>cmp</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >compare an apr_uint64_t's value with 'cmp'. If they are the same swap the value with 'with' </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the value </td></tr> <tr><td class="paramname">with</td><td>what to swap it with </td></tr> <tr><td class="paramname">cmp</td><td>the value to compare it to </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>the old value of *mem </dd></dl> </div> </div> <a id="gaf756715eff35bd8b6665bc3f2a27fbd2" name="gaf756715eff35bd8b6665bc3f2a27fbd2"></a> <h2 class="memtitle"><span class="permalink"><a href="#gaf756715eff35bd8b6665bc3f2a27fbd2">◆ </a></span>apr_atomic_casptr()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void * apr_atomic_casptr </td> <td>(</td> <td class="paramtype">volatile void ** </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void * </td> <td class="paramname"><em>with</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const void * </td> <td class="paramname"><em>cmp</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >compare the pointer's value with cmp. If they are the same swap the value with 'with' </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the pointer </td></tr> <tr><td class="paramname">with</td><td>what to swap it with </td></tr> <tr><td class="paramname">cmp</td><td>the value to compare it to </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>the old value of the pointer </dd></dl> </div> </div> <a id="ga7a8d16335fdcd27f2baca90df35ad300" name="ga7a8d16335fdcd27f2baca90df35ad300"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga7a8d16335fdcd27f2baca90df35ad300">◆ </a></span>apr_atomic_dec32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int apr_atomic_dec32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p >atomically decrement an apr_uint32_t by 1 </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the atomic value </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero if the value becomes zero on decrement, otherwise non-zero </dd></dl> </div> </div> <a id="ga2a813357a6b24c352a13ebbb666444f4" name="ga2a813357a6b24c352a13ebbb666444f4"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga2a813357a6b24c352a13ebbb666444f4">◆ </a></span>apr_atomic_dec64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int apr_atomic_dec64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p >atomically decrement an apr_uint64_t by 1 </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the atomic value </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero if the value becomes zero on decrement, otherwise non-zero </dd></dl> </div> </div> <a id="ga4af33da5aa6493ec321af14bedfc47a9" name="ga4af33da5aa6493ec321af14bedfc47a9"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga4af33da5aa6493ec321af14bedfc47a9">◆ </a></span>apr_atomic_inc32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint32_t apr_atomic_inc32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p >atomically increment an apr_uint32_t by 1 </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>old value pointed to by mem </dd></dl> </div> </div> <a id="ga2d091caea5fe759a89c1ff8f9231060b" name="ga2d091caea5fe759a89c1ff8f9231060b"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga2d091caea5fe759a89c1ff8f9231060b">◆ </a></span>apr_atomic_inc64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_atomic_inc64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p >atomically increment an apr_uint64_t by 1 </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>old value pointed to by mem </dd></dl> </div> </div> <a id="gaa89b4022de39ca4d1c2ae6715e888e97" name="gaa89b4022de39ca4d1c2ae6715e888e97"></a> <h2 class="memtitle"><span class="permalink"><a href="#gaa89b4022de39ca4d1c2ae6715e888e97">◆ </a></span>apr_atomic_init()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_atomic_init </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td> <td class="paramname"><em>p</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p >this function is required on some platforms to initialize the atomic operation's internal structures </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">p</td><td>pool </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>APR_SUCCESS on successful completion </dd></dl> <dl class="section remark"><dt>Remarks</dt><dd>Programs do NOT need to call this directly. APR will call this automatically from <a class="el" href="group__apr__library.html#ga4a91a6b9ff457ead13e670950127761a">apr_initialize()</a>. </dd></dl> </div> </div> <a id="gafba4de90e113d26536cff48418689771" name="gafba4de90e113d26536cff48418689771"></a> <h2 class="memtitle"><span class="permalink"><a href="#gafba4de90e113d26536cff48418689771">◆ </a></span>apr_atomic_read32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint32_t apr_atomic_read32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p >atomically read an apr_uint32_t from memory </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>the pointer </td></tr> </table> </dd> </dl> </div> </div> <a id="gaabf8e658bc5c4c93c84520e7e021422e" name="gaabf8e658bc5c4c93c84520e7e021422e"></a> <h2 class="memtitle"><span class="permalink"><a href="#gaabf8e658bc5c4c93c84520e7e021422e">◆ </a></span>apr_atomic_read64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_atomic_read64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p >atomically read an apr_uint64_t from memory </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>the pointer </td></tr> </table> </dd> </dl> </div> </div> <a id="gac689de9df18c093f66959227359328bb" name="gac689de9df18c093f66959227359328bb"></a> <h2 class="memtitle"><span class="permalink"><a href="#gac689de9df18c093f66959227359328bb">◆ </a></span>apr_atomic_set32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void apr_atomic_set32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >atomically set an apr_uint32_t in memory </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> <tr><td class="paramname">val</td><td>value that the object will assume </td></tr> </table> </dd> </dl> </div> </div> <a id="gaca335823ac1ec13f60df3a848b393938" name="gaca335823ac1ec13f60df3a848b393938"></a> <h2 class="memtitle"><span class="permalink"><a href="#gaca335823ac1ec13f60df3a848b393938">◆ </a></span>apr_atomic_set64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void apr_atomic_set64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint64_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >atomically set an apr_uint64_t in memory </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> <tr><td class="paramname">val</td><td>value that the object will assume </td></tr> </table> </dd> </dl> </div> </div> <a id="ga4603396650e844bd987f01358ccb4df1" name="ga4603396650e844bd987f01358ccb4df1"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga4603396650e844bd987f01358ccb4df1">◆ </a></span>apr_atomic_sub32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void apr_atomic_sub32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >atomically subtract 'val' from an apr_uint32_t </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> <tr><td class="paramname">val</td><td>amount to subtract </td></tr> </table> </dd> </dl> </div> </div> <a id="gab9587444053ce84342c4d4b3fe3864a1" name="gab9587444053ce84342c4d4b3fe3864a1"></a> <h2 class="memtitle"><span class="permalink"><a href="#gab9587444053ce84342c4d4b3fe3864a1">◆ </a></span>apr_atomic_sub64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void apr_atomic_sub64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint64_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >atomically subtract 'val' from an apr_uint64_t </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the object </td></tr> <tr><td class="paramname">val</td><td>amount to subtract </td></tr> </table> </dd> </dl> </div> </div> <a id="ga50850e462d65e0409d5a93a6b4ec26c6" name="ga50850e462d65e0409d5a93a6b4ec26c6"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga50850e462d65e0409d5a93a6b4ec26c6">◆ </a></span>apr_atomic_xchg32()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint32_t apr_atomic_xchg32 </td> <td>(</td> <td class="paramtype">volatile apr_uint32_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >exchange an apr_uint32_t's value with 'val'. </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the value </td></tr> <tr><td class="paramname">val</td><td>what to swap it with </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>the old value of *mem </dd></dl> </div> </div> <a id="ga4077bb0c735f1d72fd050163c6c39419" name="ga4077bb0c735f1d72fd050163c6c39419"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga4077bb0c735f1d72fd050163c6c39419">◆ </a></span>apr_atomic_xchg64()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_atomic_xchg64 </td> <td>(</td> <td class="paramtype">volatile apr_uint64_t * </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint64_t </td> <td class="paramname"><em>val</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >exchange an apr_uint64_t's value with 'val'. </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the value </td></tr> <tr><td class="paramname">val</td><td>what to swap it with </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>the old value of *mem </dd></dl> </div> </div> <a id="ga952e9a57b5df8d79ed2295b6fdc2c43c" name="ga952e9a57b5df8d79ed2295b6fdc2c43c"></a> <h2 class="memtitle"><span class="permalink"><a href="#ga952e9a57b5df8d79ed2295b6fdc2c43c">◆ </a></span>apr_atomic_xchgptr()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void * apr_atomic_xchgptr </td> <td>(</td> <td class="paramtype">volatile void ** </td> <td class="paramname"><em>mem</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void * </td> <td class="paramname"><em>with</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p >exchange a pair of pointer values </p><dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">mem</td><td>pointer to the pointer </td></tr> <tr><td class="paramname">with</td><td>what to swap it with </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>the old value of the pointer </dd></dl> </div> </div> </div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.3 </small></address> </body> </html>