3party/mimalloc
0
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2024-12-27 13:33:18 +08:00
Code Issues Projects Releases Wiki Activity
mimalloc/docs/group__analysis.html
daan bb6afb7efd update documentation
2020-04-20 12:00:39 -07:00

386 lines
20 KiB
HTML
Raw Blame History

<!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 1.8.15"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>mi-malloc: Heap Introspection</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="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(initResizable);
/* @license-end */</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>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function() { init_search(); });
/* @license-end */
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="mimalloc-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="projectlogo"><img alt="Logo" src="mimalloc-logo.svg"/></td>
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">mi-malloc
&#160;<span id="projectnumber">1.6</span>
</div>
</td>
<td> <div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.15 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('group__analysis.html','');});
/* @license-end */
</script>
<div id="doc-content">
<!-- 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="#nested-classes">Data Structures</a> &#124;
<a href="#typedef-members">Typedefs</a> &#124;
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">Heap Introspection</div> </div>
</div><!--header-->
<div class="contents">
<p>Inspect the heap at runtime.
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:structmi__heap__area__t"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__analysis.html#structmi__heap__area__t">mi_heap_area_t</a></td></tr>
<tr class="memdesc:structmi__heap__area__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">An area of heap space contains blocks of a single size. <a href="group__analysis.html#structmi__heap__area__t">More...</a><br /></td></tr>
<tr class="separator:structmi__heap__area__t"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr class="memitem:gadfa01e2900f0e5d515ad5506b26f6d65"><td class="memItemLeft" align="right" valign="top">typedef bool()&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__analysis.html#gadfa01e2900f0e5d515ad5506b26f6d65">mi_block_visit_fun</a>(const <a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *heap, const <a class="el" href="group__analysis.html#structmi__heap__area__t">mi_heap_area_t</a> *area, void *block, size_t block_size, void *arg)</td></tr>
<tr class="memdesc:gadfa01e2900f0e5d515ad5506b26f6d65"><td class="mdescLeft">&#160;</td><td class="mdescRight">Visitor function passed to <a class="el" href="group__analysis.html#ga70c46687dc6e9dc98b232b02646f8bed" title="Visit all areas and blocks in a heap.">mi_heap_visit_blocks()</a> <a href="#gadfa01e2900f0e5d515ad5506b26f6d65">More...</a><br /></td></tr>
<tr class="separator:gadfa01e2900f0e5d515ad5506b26f6d65"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gaa862aa8ed8d57d84cae41fc1022d71af"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__analysis.html#gaa862aa8ed8d57d84cae41fc1022d71af">mi_heap_contains_block</a> (<a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *heap, const void *p)</td></tr>
<tr class="memdesc:gaa862aa8ed8d57d84cae41fc1022d71af"><td class="mdescLeft">&#160;</td><td class="mdescRight">Does a heap contain a pointer to a previously allocated block? <a href="#gaa862aa8ed8d57d84cae41fc1022d71af">More...</a><br /></td></tr>
<tr class="separator:gaa862aa8ed8d57d84cae41fc1022d71af"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga0d67c1789faaa15ff366c024fcaf6377"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__analysis.html#ga0d67c1789faaa15ff366c024fcaf6377">mi_heap_check_owned</a> (<a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *heap, const void *p)</td></tr>
<tr class="memdesc:ga0d67c1789faaa15ff366c024fcaf6377"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check safely if any pointer is part of a heap. <a href="#ga0d67c1789faaa15ff366c024fcaf6377">More...</a><br /></td></tr>
<tr class="separator:ga0d67c1789faaa15ff366c024fcaf6377"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga628c237489c2679af84a4d0d143b3dd5"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__analysis.html#ga628c237489c2679af84a4d0d143b3dd5">mi_check_owned</a> (const void *p)</td></tr>
<tr class="memdesc:ga628c237489c2679af84a4d0d143b3dd5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check safely if any pointer is part of the default heap of this thread. <a href="#ga628c237489c2679af84a4d0d143b3dd5">More...</a><br /></td></tr>
<tr class="separator:ga628c237489c2679af84a4d0d143b3dd5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga70c46687dc6e9dc98b232b02646f8bed"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__analysis.html#ga70c46687dc6e9dc98b232b02646f8bed">mi_heap_visit_blocks</a> (const <a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *heap, bool visit_all_blocks, <a class="el" href="group__analysis.html#gadfa01e2900f0e5d515ad5506b26f6d65">mi_block_visit_fun</a> *visitor, void *arg)</td></tr>
<tr class="memdesc:ga70c46687dc6e9dc98b232b02646f8bed"><td class="mdescLeft">&#160;</td><td class="mdescRight">Visit all areas and blocks in a heap. <a href="#ga70c46687dc6e9dc98b232b02646f8bed">More...</a><br /></td></tr>
<tr class="separator:ga70c46687dc6e9dc98b232b02646f8bed"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Inspect the heap at runtime. </p>
<hr/><h2 class="groupheader">Data Structure Documentation</h2>
<a name="structmi__heap__area__t" id="structmi__heap__area__t"></a>
<h2 class="memtitle"><span class="permalink"><a href="#structmi__heap__area__t">&#9670;&nbsp;</a></span>mi_heap_area_t</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">struct mi_heap_area_t</td>
</tr>
</table>
</div><div class="memdoc">
<div class="textblock"><p>An area of heap space contains blocks of a single size. </p>
<p>The bytes in freed blocks are <code>committed - used</code>. </p>
</div><table class="fieldtable">
<tr><th colspan="3">Data Fields</th></tr>
<tr><td class="fieldtype">
<a id="a332a6c14d736a99699d5453a1cb04b41"></a>size_t</td>
<td class="fieldname">
block_size</td>
<td class="fielddoc">
size in bytes of one block </td></tr>
<tr><td class="fieldtype">
<a id="ae0085e6e1cf059a4eb7767e30e9991b8"></a>void *</td>
<td class="fieldname">
blocks</td>
<td class="fielddoc">
start of the area containing heap blocks </td></tr>
<tr><td class="fieldtype">
<a id="ab47526df656d8837ec3e97f11b83f835"></a>size_t</td>
<td class="fieldname">
committed</td>
<td class="fielddoc">
current committed bytes of this area </td></tr>
<tr><td class="fieldtype">
<a id="ae848a3e6840414891035423948ca0383"></a>size_t</td>
<td class="fieldname">
reserved</td>
<td class="fielddoc">
bytes reserved for this area </td></tr>
<tr><td class="fieldtype">
<a id="ab820302c5cd0df133eb8e51650a008b4"></a>size_t</td>
<td class="fieldname">
used</td>
<td class="fielddoc">
bytes in use by allocated blocks </td></tr>
</table>
</div>
</div>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="gadfa01e2900f0e5d515ad5506b26f6d65"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gadfa01e2900f0e5d515ad5506b26f6d65">&#9670;&nbsp;</a></span>mi_block_visit_fun</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">typedef bool() mi_block_visit_fun(const <a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *heap, const <a class="el" href="group__analysis.html#structmi__heap__area__t">mi_heap_area_t</a> *area, void *block, size_t block_size, void *arg)</td>
</tr>
</table>
</div><div class="memdoc">
<p>Visitor function passed to <a class="el" href="group__analysis.html#ga70c46687dc6e9dc98b232b02646f8bed" title="Visit all areas and blocks in a heap.">mi_heap_visit_blocks()</a> </p>
<dl class="section return"><dt>Returns</dt><dd><em>true</em> if ok, <em>false</em> to stop visiting (i.e. break)</dd></dl>
<p>This function is always first called for every <em>area</em> with <em>block</em> as a <em>NULL</em> pointer. If <em>visit_all_blocks</em> was <em>true</em>, the function is then called for every allocated block in that area. </p>
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="ga628c237489c2679af84a4d0d143b3dd5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga628c237489c2679af84a4d0d143b3dd5">&#9670;&nbsp;</a></span>mi_check_owned()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool mi_check_owned </td>
<td>(</td>
<td class="paramtype">const void *&#160;</td>
<td class="paramname"><em>p</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Check safely if any pointer is part of the default heap of this thread. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>Any pointer &ndash; not required to be previously allocated by us. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><em>true</em> if <em>p</em> points to a block in default heap of this thread.</dd></dl>
<p>Note: expensive function, linear in the pages in the heap. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="group__analysis.html#gaa862aa8ed8d57d84cae41fc1022d71af" title="Does a heap contain a pointer to a previously allocated block?">mi_heap_contains_block()</a> </dd>
<dd>
<a class="el" href="group__heap.html#ga8db4cbb87314a989a9a187464d6b5e05" title="Get the default heap that is used for mi_malloc() et al.">mi_heap_get_default()</a> </dd></dl>
</div>
</div>
<a id="ga0d67c1789faaa15ff366c024fcaf6377"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga0d67c1789faaa15ff366c024fcaf6377">&#9670;&nbsp;</a></span>mi_heap_check_owned()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool mi_heap_check_owned </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *&#160;</td>
<td class="paramname"><em>heap</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void *&#160;</td>
<td class="paramname"><em>p</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Check safely if any pointer is part of a heap. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">heap</td><td>The heap. </td></tr>
<tr><td class="paramname">p</td><td>Any pointer &ndash; not required to be previously allocated by us. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><em>true</em> if <em>p</em> points to a block in <em>heap</em>.</dd></dl>
<p>Note: expensive function, linear in the pages in the heap. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="group__analysis.html#gaa862aa8ed8d57d84cae41fc1022d71af" title="Does a heap contain a pointer to a previously allocated block?">mi_heap_contains_block()</a> </dd>
<dd>
<a class="el" href="group__heap.html#ga8db4cbb87314a989a9a187464d6b5e05" title="Get the default heap that is used for mi_malloc() et al.">mi_heap_get_default()</a> </dd></dl>
</div>
</div>
<a id="gaa862aa8ed8d57d84cae41fc1022d71af"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa862aa8ed8d57d84cae41fc1022d71af">&#9670;&nbsp;</a></span>mi_heap_contains_block()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool mi_heap_contains_block </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *&#160;</td>
<td class="paramname"><em>heap</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void *&#160;</td>
<td class="paramname"><em>p</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Does a heap contain a pointer to a previously allocated block? </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">heap</td><td>The heap. </td></tr>
<tr><td class="paramname">p</td><td>Pointer to a previously allocated block (in any heap)&ndash; cannot be some random pointer! </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><em>true</em> if the block pointed to by <em>p</em> is in the <em>heap</em>. </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="group__analysis.html#ga0d67c1789faaa15ff366c024fcaf6377" title="Check safely if any pointer is part of a heap.">mi_heap_check_owned()</a> </dd></dl>
</div>
</div>
<a id="ga70c46687dc6e9dc98b232b02646f8bed"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga70c46687dc6e9dc98b232b02646f8bed">&#9670;&nbsp;</a></span>mi_heap_visit_blocks()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool mi_heap_visit_blocks </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__heap.html#ga34a47cde5a5b38c29f1aa3c5e76943c2">mi_heap_t</a> *&#160;</td>
<td class="paramname"><em>heap</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool&#160;</td>
<td class="paramname"><em>visit_all_blocks</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__analysis.html#gadfa01e2900f0e5d515ad5506b26f6d65">mi_block_visit_fun</a> *&#160;</td>
<td class="paramname"><em>visitor</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void *&#160;</td>
<td class="paramname"><em>arg</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Visit all areas and blocks in a heap. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">heap</td><td>The heap to visit. </td></tr>
<tr><td class="paramname">visit_all_blocks</td><td>If <em>true</em> visits all allocated blocks, otherwise <em>visitor</em> is only called for every heap area. </td></tr>
<tr><td class="paramname">visitor</td><td>This function is called for every area in the heap (with <em>block</em> as <em>NULL</em>). If <em>visit_all_blocks</em> is <em>true</em>, <em>visitor</em> is also called for every allocated block in every area (with <code>block!=NULL</code>). return <em>false</em> from this function to stop visiting early. </td></tr>
<tr><td class="paramname">arg</td><td>Extra argument passed to <em>visitor</em>. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><em>true</em> if all areas and blocks were visited. </dd></dl>
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="footer">Generated by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.15 </li>
</ul>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink