D7net Mini Sh3LL v1
| Current File : //libx32/../share/fwupd/../doc/dmidecode/../libice6/../libapr1-dev/html/group___pool_debug.html |
<!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=9"/>
<meta name="generator" content="Doxygen 1.8.17"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Apache Portable Runtime: Pool Debugging functions.</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="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.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 style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Apache Portable Runtime
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.17 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
<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:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
</div><!-- top -->
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<div class="summary">
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">Pool Debugging functions.<div class="ingroups"><a class="el" href="group___a_p_r.html">Apache Portability Runtime library</a> » <a class="el" href="group__apr__pools.html">Memory Pool Functions</a></div></div> </div>
</div><!--header-->
<div class="contents">
<p>pools have nested lifetimes – sub_pools are destroyed when the parent pool is cleared. We allow certain liberties with operations on things such as tables (and on other structures in a more general sense) where we allow the caller to insert values into a table which were not allocated from the table's pool. The table's data will remain valid as long as all the pools from which its values are allocated remain valid.
<a href="#details">More...</a></p>
<div class="dynheader">
Collaboration diagram for Pool Debugging functions.:</div>
<div class="dyncontent">
<div class="center"><img src="group___pool_debug.png" border="0" usemap="#group______pool__debug" alt=""/></div>
<!-- MAP 0 -->
</div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gaecd956092f81c70117507ad8cbca8ea7"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___pool_debug.html#gaecd956092f81c70117507ad8cbca8ea7">apr_pool_join</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, <a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *sub)</td></tr>
<tr class="separator:gaecd956092f81c70117507ad8cbca8ea7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0bc40d9069709020e3643492dae2ccb0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___pool_debug.html#ga0bc40d9069709020e3643492dae2ccb0">apr_pool_find</a> (const void *mem)</td></tr>
<tr class="separator:ga0bc40d9069709020e3643492dae2ccb0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga22462da23d70dfde389a370b131cd351"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___pool_debug.html#ga22462da23d70dfde389a370b131cd351">apr_pool_num_bytes</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, int recurse)</td></tr>
<tr class="separator:ga22462da23d70dfde389a370b131cd351"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga24f8f0287478fa71f77d0ce4ec035e4a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___pool_debug.html#ga24f8f0287478fa71f77d0ce4ec035e4a">apr_pool_lock</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *pool, int flag)</td></tr>
<tr class="separator:ga24f8f0287478fa71f77d0ce4ec035e4a"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>pools have nested lifetimes – sub_pools are destroyed when the parent pool is cleared. We allow certain liberties with operations on things such as tables (and on other structures in a more general sense) where we allow the caller to insert values into a table which were not allocated from the table's pool. The table's data will remain valid as long as all the pools from which its values are allocated remain valid. </p>
<p>For example, if B is a sub pool of A, and you build a table T in pool B, then it's safe to insert data allocated in A or B into T (because B lives at most as long as A does, and T is destroyed when B is cleared/destroyed). On the other hand, if S is a table in pool A, it is safe to insert data allocated in A into S, but it is <em>not safe</em> to insert data allocated from B into S... because B can be cleared/destroyed before A is (which would leave dangling pointers in T's data structures).</p>
<p>In general we say that it is safe to insert data into a table T if the data is allocated in any ancestor of T's pool. This is the basis on which the APR_POOL_DEBUG code works – it tests these ancestor relationships for all data inserted into tables. APR_POOL_DEBUG also provides tools (apr_pool_find, and apr_pool_is_ancestor) for other folks to implement similar restrictions for their own data structures.</p>
<p>However, sometimes this ancestor requirement is inconvenient – sometimes it's necessary to create a sub pool where the sub pool is guaranteed to have the same lifetime as the parent pool. This is a guarantee implemented by the <em>caller</em>, not by the pool code. That is, the caller guarantees they won't destroy the sub pool individually prior to destroying the parent pool.</p>
<p>In this case the caller must call <a class="el" href="group___pool_debug.html#gaecd956092f81c70117507ad8cbca8ea7">apr_pool_join()</a> to indicate this guarantee to the APR_POOL_DEBUG code.</p>
<p>These functions are only implemented when #APR_POOL_DEBUG is set. </p>
<h2 class="groupheader">Function Documentation</h2>
<a id="ga0bc40d9069709020e3643492dae2ccb0"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga0bc40d9069709020e3643492dae2ccb0">◆ </a></span>apr_pool_find()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a>* apr_pool_find </td>
<td>(</td>
<td class="paramtype">const void * </td>
<td class="paramname"><em>mem</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Find a pool from something allocated in it. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">mem</td><td>The thing allocated in the pool </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The pool it is allocated in </dd></dl>
</div>
</div>
<a id="gaecd956092f81c70117507ad8cbca8ea7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaecd956092f81c70117507ad8cbca8ea7">◆ </a></span>apr_pool_join()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void apr_pool_join </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>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>sub</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Guarantee that a subpool has the same lifetime as the parent. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>The parent pool </td></tr>
<tr><td class="paramname">sub</td><td>The subpool </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ga24f8f0287478fa71f77d0ce4ec035e4a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga24f8f0287478fa71f77d0ce4ec035e4a">◆ </a></span>apr_pool_lock()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void apr_pool_lock </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>pool</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>flag</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Lock a pool </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pool</td><td>The pool to lock </td></tr>
<tr><td class="paramname">flag</td><td>The flag </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ga22462da23d70dfde389a370b131cd351"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga22462da23d70dfde389a370b131cd351">◆ </a></span>apr_pool_num_bytes()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">apr_size_t apr_pool_num_bytes </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>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>recurse</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Report the number of bytes currently in the pool </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>The pool to inspect </td></tr>
<tr><td class="paramname">recurse</td><td>Recurse/include the subpools' sizes </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The number of bytes </dd></dl>
</div>
</div>
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.17
</small></address>
</body>
</html>
AnonSec - 2021 | Recode By D7net