Files
moslab-code/doc/source/html/classL4_1_1Cap.html
2025-09-12 15:55:45 +02:00

550 lines
42 KiB
HTML

<!-- HTML header for doxygen 1.9.1-->
<!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 1.15.0"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>L4Re Operating System Framework: L4::Cap&lt; T &gt; Class Template Reference</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="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript" src="cookie.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" />
<link href="doxygen-awesome.css" rel="stylesheet" type="text/css"/>
<link href="l4re-awesome.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="L4Re_rgb_logo_quer_hg_h55.png"/></td>
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">L4Re Operating System Framework
</div>
<div id="projectbrief">Interface and Usage Documentation</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.15.0 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search/",'.html');
</script>
<script type="text/javascript">
$(function() { codefold.init(); });
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
$(function() {
initMenu('',true,false,'search.php','Search',true);
$(function() { init_search(); });
});
</script>
<div id="main-nav"></div>
</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">
$(function(){initNavTree('classL4_1_1Cap.html','',''); });
</script>
<div id="container">
<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">
<div id="MSearchResults">
<div class="SRPage">
<div id="SRIndex">
<div id="SRResults"></div>
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
</div>
</div>
</div>
</div>
<div class="header">
<div class="headertitle"><div class="title">L4::Cap&lt; T &gt; Class Template Reference</div></div>
</div><!--header-->
<div class="contents">
<p>C++ interface for capabilities.
<a href="#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="capability_8h_source.html">capability.h</a>&gt;</code></p>
<div id="dynsection-0" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Inheritance diagram for L4::Cap&lt; T &gt;:</div>
<div id="dynsection-0-summary" class="dynsummary" style="display:block;">
</div>
<div id="dynsection-0-content" class="dyncontent" style="display:none;">
<div class="center"><iframe scrolling="no" loading="lazy" frameborder="0" src="classL4_1_1Cap__inherit__graph.svg" width="2634" height="987"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
</div>
<div id="dynsection-1" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Collaboration diagram for L4::Cap&lt; T &gt;:</div>
<div id="dynsection-1-summary" class="dynsummary" style="display:block;">
</div>
<div id="dynsection-1-content" class="dyncontent" style="display:none;">
<div class="center"><iframe scrolling="no" loading="lazy" frameborder="0" src="classL4_1_1Cap__coll__graph.svg" width="206" height="670"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
</div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-pub-methods" class="groupheader"><a id="pub-methods" name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ad1e95bcebda8bb53959bb2c7bf4e159e" id="r_ad1e95bcebda8bb53959bb2c7bf4e159e"><td class="memTemplParams" colspan="2">template&lt;typename O&gt; </td></tr>
<tr class="memitem:ad1e95bcebda8bb53959bb2c7bf4e159e template"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ad1e95bcebda8bb53959bb2c7bf4e159e">Cap</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; O &gt; const &amp;o) noexcept</td></tr>
<tr class="memdesc:ad1e95bcebda8bb53959bb2c7bf4e159e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a copy from <span class="tt">o</span>, supporting implicit type casting. <br /></td></tr>
<tr class="memitem:a9a75de08c028f58767f0d39a08ac7b73" id="r_a9a75de08c028f58767f0d39a08ac7b73"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a9a75de08c028f58767f0d39a08ac7b73">Cap</a> (<a class="el" href="classL4_1_1Cap__base.html#ac74dbedb04347341ba30ece923c12fe7">Cap_type</a> <a class="el" href="classL4_1_1Cap__base.html#a90ff089ca2442b128c2b2b0e1c22c6d7">cap</a>) noexcept</td></tr>
<tr class="memdesc:a9a75de08c028f58767f0d39a08ac7b73"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor to create an invalid capability selector. <br /></td></tr>
<tr class="memitem:ad0691c8f768b711f43e8053dae124ab7" id="r_ad0691c8f768b711f43e8053dae124ab7"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ad0691c8f768b711f43e8053dae124ab7">Cap</a> (<a class="el" href="group__l4__cap__api.html#gaa7801b63edba351bad9ea8026432b5c4">l4_default_caps_t</a> <a class="el" href="classL4_1_1Cap__base.html#a90ff089ca2442b128c2b2b0e1c22c6d7">cap</a>) noexcept</td></tr>
<tr class="memdesc:ad0691c8f768b711f43e8053dae124ab7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialize capability with one of the default capability selectors. <br /></td></tr>
<tr class="memitem:a46adf956084b8d2f00252c17bfdc422c" id="r_a46adf956084b8d2f00252c17bfdc422c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a46adf956084b8d2f00252c17bfdc422c">Cap</a> (<a class="el" href="group__l4__cap__api.html#ga1445e923ce73029130d569d6e69a4dd8">l4_cap_idx_t</a> idx=<a class="el" href="group__l4__cap__api.html#ggafee0421c2fe0e5cfc59f17f16ea10879aff9320ed307e76cebfca6c2871136102">L4_INVALID_CAP</a>) noexcept</td></tr>
<tr class="memdesc:a46adf956084b8d2f00252c17bfdc422c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialize capability, defaults to the invalid capability selector. <br /></td></tr>
<tr class="memitem:a815595ef89433fe4f9df8515790b3494" id="r_a815595ef89433fe4f9df8515790b3494"><td class="memItemLeft" align="right" valign="top"><a id="a815595ef89433fe4f9df8515790b3494" name="a815595ef89433fe4f9df8515790b3494"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>Cap</b> (<a class="el" href="classL4_1_1Cap__base.html#ad37dbcac6ae8bb071b62abc38327065d">No_init_type</a>) noexcept</td></tr>
<tr class="memdesc:a815595ef89433fe4f9df8515790b3494"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create an uninitialized cap selector. <br /></td></tr>
<tr class="memitem:ae097fe17d218b76dc368a5383372168f" id="r_ae097fe17d218b76dc368a5383372168f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classL4_1_1Cap.html">Cap</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ae097fe17d218b76dc368a5383372168f">move</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a> const &amp;src) const</td></tr>
<tr class="memdesc:ae097fe17d218b76dc368a5383372168f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Move a capability to this cap slot. <br /></td></tr>
<tr class="memitem:a03750491e2cb888d26e2fbdfcc0b7dbc" id="r_a03750491e2cb888d26e2fbdfcc0b7dbc"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classL4_1_1Cap.html">Cap</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a03750491e2cb888d26e2fbdfcc0b7dbc">copy</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a> const &amp;src) const</td></tr>
<tr class="memdesc:a03750491e2cb888d26e2fbdfcc0b7dbc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy a capability to this cap slot. <br /></td></tr>
<tr class="memitem:a759c3901eb85ab9beda2082b45d98566" id="r_a759c3901eb85ab9beda2082b45d98566"><td class="memItemLeft" align="right" valign="top"><a id="a759c3901eb85ab9beda2082b45d98566" name="a759c3901eb85ab9beda2082b45d98566"></a>
T *&#160;</td><td class="memItemRight" valign="bottom"><b>operator-&gt;</b> () const noexcept</td></tr>
<tr class="memdesc:a759c3901eb85ab9beda2082b45d98566"><td class="mdescLeft">&#160;</td><td class="mdescRight">Member access of a <span class="tt">T</span>. <br /></td></tr>
<tr class="inherit_header pub_methods_classL4_1_1Cap__base"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pub_methods_classL4_1_1Cap__base')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Public Member Functions inherited from <a class="el" href="classL4_1_1Cap__base.html">L4::Cap_base</a></td></tr>
<tr class="memitem:a90ff089ca2442b128c2b2b0e1c22c6d7 inherit pub_methods_classL4_1_1Cap__base" id="r_a90ff089ca2442b128c2b2b0e1c22c6d7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__l4__cap__api.html#ga1445e923ce73029130d569d6e69a4dd8">l4_cap_idx_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#a90ff089ca2442b128c2b2b0e1c22c6d7">cap</a> () const noexcept</td></tr>
<tr class="memdesc:a90ff089ca2442b128c2b2b0e1c22c6d7 inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return capability selector. <br /></td></tr>
<tr class="memitem:ab4937bb12579c752564f7250760d0bda inherit pub_methods_classL4_1_1Cap__base" id="r_ab4937bb12579c752564f7250760d0bda"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#ab4937bb12579c752564f7250760d0bda">is_valid</a> () const noexcept</td></tr>
<tr class="memdesc:ab4937bb12579c752564f7250760d0bda inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test whether the capability is a valid capability index (i.e., not L4_INVALID_CAP). <br /></td></tr>
<tr class="memitem:ad26ec2034582191b74ac1b819e1948da inherit pub_methods_classL4_1_1Cap__base" id="r_ad26ec2034582191b74ac1b819e1948da"><td class="memItemLeft" align="right" valign="top">
int&#160;</td><td class="memItemRight" valign="bottom"><b>invalid_cap_error</b> () const noexcept</td></tr>
<tr class="memdesc:ad26ec2034582191b74ac1b819e1948da inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the transported error code in an invalid capability index. <br /></td></tr>
<tr class="memitem:a60a4c249059576429246b5b74bd3174e inherit pub_methods_classL4_1_1Cap__base" id="r_a60a4c249059576429246b5b74bd3174e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="unionl4__fpage__t.html">l4_fpage_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#a60a4c249059576429246b5b74bd3174e">fpage</a> (unsigned rights=<a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39abf42b05aa006bc62a22f1be1aa760020">L4_CAP_FPAGE_RWS</a>) const noexcept</td></tr>
<tr class="memdesc:a60a4c249059576429246b5b74bd3174e inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return flexpage for the capability. <br /></td></tr>
<tr class="memitem:af270c8a40ac7f715776c155fa91c7342 inherit pub_methods_classL4_1_1Cap__base" id="r_af270c8a40ac7f715776c155fa91c7342"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#af270c8a40ac7f715776c155fa91c7342">snd_base</a> (unsigned grant=<a class="el" href="group__l4__msgitem__api.html#gga94ecfe2908867c4ed0c13a7a97337f6aaca6431510837e32c27f628147ba3c12a">L4_MAP_ITEM_MAP</a>, <a class="el" href="group__l4__cap__api.html#ga1445e923ce73029130d569d6e69a4dd8">l4_cap_idx_t</a> base=<a class="el" href="group__l4__cap__api.html#ggafee0421c2fe0e5cfc59f17f16ea10879aff9320ed307e76cebfca6c2871136102">L4_INVALID_CAP</a>) const noexcept</td></tr>
<tr class="memdesc:af270c8a40ac7f715776c155fa91c7342 inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return send base. <br /></td></tr>
<tr class="memitem:aaacc5520eb3de110f1365d849af3c1a2 inherit pub_methods_classL4_1_1Cap__base" id="r_aaacc5520eb3de110f1365d849af3c1a2"><td class="memItemLeft" align="right" valign="top">
bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator==</b> (<a class="el" href="classL4_1_1Cap__base.html">Cap_base</a> const &amp;o) const noexcept</td></tr>
<tr class="memdesc:aaacc5520eb3de110f1365d849af3c1a2 inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test if two capabilities are equal. <br /></td></tr>
<tr class="memitem:a67660c0a25460daa0cdde8352f367e49 inherit pub_methods_classL4_1_1Cap__base" id="r_a67660c0a25460daa0cdde8352f367e49"><td class="memItemLeft" align="right" valign="top">
bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator!=</b> (<a class="el" href="classL4_1_1Cap__base.html">Cap_base</a> const &amp;o) const noexcept</td></tr>
<tr class="memdesc:a67660c0a25460daa0cdde8352f367e49 inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test if two capabilities are not equal. <br /></td></tr>
<tr class="memitem:ad664436a61346e2c0c473b3f94212523 inherit pub_methods_classL4_1_1Cap__base" id="r_ad664436a61346e2c0c473b3f94212523"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#ad664436a61346e2c0c473b3f94212523">validate</a> (<a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *u=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) const noexcept</td></tr>
<tr class="memdesc:ad664436a61346e2c0c473b3f94212523 inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check whether a capability is present (refers to an object). <br /></td></tr>
<tr class="memitem:a71cf0212f0ee9671914a04347736d4de inherit pub_methods_classL4_1_1Cap__base" id="r_a71cf0212f0ee9671914a04347736d4de"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#a71cf0212f0ee9671914a04347736d4de">validate</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; <a class="el" href="classL4_1_1Task.html">Task</a> &gt; task, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *u=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) const noexcept</td></tr>
<tr class="memdesc:a71cf0212f0ee9671914a04347736d4de inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check whether a capability is present (refers to an object). <br /></td></tr>
<tr class="memitem:a44d8ff917b4024af596a5c2e9497faae inherit pub_methods_classL4_1_1Cap__base" id="r_a44d8ff917b4024af596a5c2e9497faae"><td class="memItemLeft" align="right" valign="top">
void&#160;</td><td class="memItemRight" valign="bottom"><b>invalidate</b> () noexcept</td></tr>
<tr class="memdesc:a44d8ff917b4024af596a5c2e9497faae inherit pub_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set this capability to invalid (L4_INVALID_CAP). <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-pub-static-methods" class="groupheader"><a id="pub-static-methods" name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:af6d917bed9c7455862b14086dd3f4efa" id="r_af6d917bed9c7455862b14086dd3f4efa"><td class="memTemplParams" colspan="2">template&lt;typename From&gt; </td></tr>
<tr class="memitem:af6d917bed9c7455862b14086dd3f4efa template"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#af6d917bed9c7455862b14086dd3f4efa">check_convertible_from</a> () noexcept</td></tr>
<tr class="memdesc:af6d917bed9c7455862b14086dd3f4efa"><td class="mdescLeft">&#160;</td><td class="mdescRight">Perform the type conversion that needs to compile in order for a capability of type From to be convertible to one of type T. <br /></td></tr>
<tr class="memitem:aa7df6af25ea6423cd8b0f9410b4e0df8" id="r_aa7df6af25ea6423cd8b0f9410b4e0df8"><td class="memTemplParams" colspan="2">template&lt;typename From&gt; </td></tr>
<tr class="memitem:aa7df6af25ea6423cd8b0f9410b4e0df8 template"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aa7df6af25ea6423cd8b0f9410b4e0df8">check_castable_from</a> () noexcept</td></tr>
<tr class="memdesc:aa7df6af25ea6423cd8b0f9410b4e0df8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Perform the type conversion that needs to compile in order for a capability of type From te be castable (via the correct cap_cast) to one of type T. <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-friends" class="groupheader"><a id="friends" name="friends"></a>
Friends</h2></td></tr>
<tr class="memitem:ace5dfb21f724faa65b7e922448bccf70" id="r_ace5dfb21f724faa65b7e922448bccf70"><td class="memItemLeft" align="right" valign="top"><a id="ace5dfb21f724faa65b7e922448bccf70" name="ace5dfb21f724faa65b7e922448bccf70"></a>
class&#160;</td><td class="memItemRight" valign="bottom"><b>L4::Kobject</b></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-inherited" class="groupheader"><a id="inherited" name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pub_types_classL4_1_1Cap__base"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pub_types_classL4_1_1Cap__base')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Public Types inherited from <a class="el" href="classL4_1_1Cap__base.html">L4::Cap_base</a></td></tr>
<tr class="memitem:ad37dbcac6ae8bb071b62abc38327065d inherit pub_types_classL4_1_1Cap__base" id="r_ad37dbcac6ae8bb071b62abc38327065d"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#ad37dbcac6ae8bb071b62abc38327065d">No_init_type</a> { <a class="el" href="classL4_1_1Cap__base.html#ad37dbcac6ae8bb071b62abc38327065da2bb30abe3785b586e7458771a248c889">No_init</a>
}</td></tr>
<tr class="memdesc:ad37dbcac6ae8bb071b62abc38327065d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Special value for uninitialized capability objects. <a href="classL4_1_1Cap__base.html#ad37dbcac6ae8bb071b62abc38327065d">More...</a><br /></td></tr>
<tr class="memitem:ac74dbedb04347341ba30ece923c12fe7 inherit pub_types_classL4_1_1Cap__base" id="r_ac74dbedb04347341ba30ece923c12fe7"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#ac74dbedb04347341ba30ece923c12fe7">Cap_type</a> { <a class="el" href="classL4_1_1Cap__base.html#ac74dbedb04347341ba30ece923c12fe7af425c8e16afcd760ecb1f30bd6c1437a">Invalid</a> = L4_INVALID_CAP
}</td></tr>
<tr class="memdesc:ac74dbedb04347341ba30ece923c12fe7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Invalid capability type. <a href="classL4_1_1Cap__base.html#ac74dbedb04347341ba30ece923c12fe7">More...</a><br /></td></tr>
<tr class="inherit_header pro_methods_classL4_1_1Cap__base"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_methods_classL4_1_1Cap__base')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Member Functions inherited from <a class="el" href="classL4_1_1Cap__base.html">L4::Cap_base</a></td></tr>
<tr class="memitem:ad51e36743fd47c161ffb23f4e8c4f706 inherit pro_methods_classL4_1_1Cap__base" id="r_ad51e36743fd47c161ffb23f4e8c4f706"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#ad51e36743fd47c161ffb23f4e8c4f706">Cap_base</a> (<a class="el" href="group__l4__cap__api.html#ga1445e923ce73029130d569d6e69a4dd8">l4_cap_idx_t</a> c) noexcept</td></tr>
<tr class="memdesc:ad51e36743fd47c161ffb23f4e8c4f706 inherit pro_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Generate a capability from its C representation. <br /></td></tr>
<tr class="memitem:a59e200d5c069848675fbf47bb048833c inherit pro_methods_classL4_1_1Cap__base" id="r_a59e200d5c069848675fbf47bb048833c"><td class="memItemLeft" align="right" valign="top">
&#160;</td><td class="memItemRight" valign="bottom"><b>Cap_base</b> (<a class="el" href="classL4_1_1Cap__base.html#ac74dbedb04347341ba30ece923c12fe7">Cap_type</a> <a class="el" href="classL4_1_1Cap__base.html#a90ff089ca2442b128c2b2b0e1c22c6d7">cap</a>) noexcept</td></tr>
<tr class="memdesc:a59e200d5c069848675fbf47bb048833c inherit pro_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor to create an invalid capability. <br /></td></tr>
<tr class="memitem:a2b95e5fade07d490b90a91e86ceb89f0 inherit pro_methods_classL4_1_1Cap__base" id="r_a2b95e5fade07d490b90a91e86ceb89f0"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#a2b95e5fade07d490b90a91e86ceb89f0">Cap_base</a> (<a class="el" href="group__l4__cap__api.html#gaa7801b63edba351bad9ea8026432b5c4">l4_default_caps_t</a> <a class="el" href="classL4_1_1Cap__base.html#a90ff089ca2442b128c2b2b0e1c22c6d7">cap</a>) noexcept</td></tr>
<tr class="memdesc:a2b95e5fade07d490b90a91e86ceb89f0 inherit pro_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialize capability with one of the default capabilities. <br /></td></tr>
<tr class="memitem:aea13cf4ec224211dc780a56d6ffa1c53 inherit pro_methods_classL4_1_1Cap__base" id="r_aea13cf4ec224211dc780a56d6ffa1c53"><td class="memItemLeft" align="right" valign="top">
&#160;</td><td class="memItemRight" valign="bottom"><b>Cap_base</b> () noexcept</td></tr>
<tr class="memdesc:aea13cf4ec224211dc780a56d6ffa1c53 inherit pro_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create an uninitialized instance. <br /></td></tr>
<tr class="memitem:ab6cd8e73ebbdb5dfa45355b7c1fde1c2 inherit pro_methods_classL4_1_1Cap__base" id="r_ab6cd8e73ebbdb5dfa45355b7c1fde1c2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#ab6cd8e73ebbdb5dfa45355b7c1fde1c2">move</a> (<a class="el" href="classL4_1_1Cap__base.html">Cap_base</a> const &amp;src) const</td></tr>
<tr class="memdesc:ab6cd8e73ebbdb5dfa45355b7c1fde1c2 inherit pro_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Replace this capability with the contents of <span class="tt">src</span>. <br /></td></tr>
<tr class="memitem:a1501f9852fda4c01a1591a7c53585d5f inherit pro_methods_classL4_1_1Cap__base" id="r_a1501f9852fda4c01a1591a7c53585d5f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Cap__base.html#a1501f9852fda4c01a1591a7c53585d5f">copy</a> (<a class="el" href="classL4_1_1Cap__base.html">Cap_base</a> const &amp;src) const</td></tr>
<tr class="memdesc:a1501f9852fda4c01a1591a7c53585d5f inherit pro_methods_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy a capability. <br /></td></tr>
<tr class="inherit_header pro_attribs_classL4_1_1Cap__base"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_attribs_classL4_1_1Cap__base')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Attributes inherited from <a class="el" href="classL4_1_1Cap__base.html">L4::Cap_base</a></td></tr>
<tr class="memitem:a78113f1ec15a18c099e8f010667c0437 inherit pro_attribs_classL4_1_1Cap__base" id="r_a78113f1ec15a18c099e8f010667c0437"><td class="memItemLeft" align="right" valign="top">
<a class="el" href="group__l4__cap__api.html#ga1445e923ce73029130d569d6e69a4dd8">l4_cap_idx_t</a>&#160;</td><td class="memItemRight" valign="bottom"><b>_c</b></td></tr>
<tr class="memdesc:a78113f1ec15a18c099e8f010667c0437 inherit pro_attribs_classL4_1_1Cap__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">The C representation of a capability selector. <br /></td></tr>
</table>
<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
<div class="textblock"><div class="compoundTemplParams">template&lt;typename T&gt;<br />
class L4::Cap&lt; T &gt;</div><p>C++ interface for capabilities. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">T</td><td>Type of the object the capability points to.</td></tr>
</table>
</dd>
</dl>
<p>The C++ version of a capability is comparable to a pointer, in fact it is a kind of smart pointer for our kernel objects and the objects derived from the kernel objects (<a class="el" href="classL4_1_1Kobject.html" title="Base class for all kinds of kernel objects and remote objects, referenced by capabilities.">L4::Kobject</a>).</p>
<p>Add </p><pre class="fragment">#include &lt;l4/sys/capability&gt;
</pre><p>to your code to use the capability interface. </p>
<dl class="section examples"><dt>Examples</dt><dd><a class="el" href="examples_2clntsrv_2src_2client_8cc-example.html#_a0">examples/clntsrv/src/client.cc</a>, <a class="el" href="examples_2libs_2l4re_2c_09_09_2mem_alloc_2ma_09rm_8cc-example.html#_a0">examples/libs/l4re/c++/mem_alloc/ma+rm.cc</a>, <a class="el" href="examples_2libs_2l4re_2c_09_09_2shared_ds_2ds_clnt_8cc-example.html#_a0">examples/libs/l4re/c++/shared_ds/ds_clnt.cc</a>, <a class="el" href="examples_2libs_2l4re_2c_09_09_2shared_ds_2ds_srv_8cc-example.html#_a1">examples/libs/l4re/c++/shared_ds/ds_srv.cc</a>, <a class="el" href="examples_2libs_2l4re_2streammap_2client_8cc-example.html#_a0">examples/libs/l4re/streammap/client.cc</a>, and <a class="el" href="examples_2sys_2migrate_2thread_migrate_8cc-example.html#_a0">examples/sys/migrate/thread_migrate.cc</a>.</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00223">223</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div><a name="doc-constructors" id="doc-constructors"></a><h2 id="header-doc-constructors" class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="ad1e95bcebda8bb53959bb2c7bf4e159e" name="ad1e95bcebda8bb53959bb2c7bf4e159e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad1e95bcebda8bb53959bb2c7bf4e159e">&#9670;&#160;</a></span>Cap() <span class="overload">[1/4]</span></h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<div class="memtemplate">
template&lt;typename O&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::Cap </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; O &gt; const &amp;</td> <td class="paramname"><span class="paramname"><em>o</em></span></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span><span class="mlabel noexcept">noexcept</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Create a copy from <span class="tt">o</span>, supporting implicit type casting. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">o</td><td>The source selector that shall be copied (and casted). </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00275">275</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<a id="a9a75de08c028f58767f0d39a08ac7b73" name="a9a75de08c028f58767f0d39a08ac7b73"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9a75de08c028f58767f0d39a08ac7b73">&#9670;&#160;</a></span>Cap() <span class="overload">[2/4]</span></h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::Cap </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classL4_1_1Cap__base.html#ac74dbedb04347341ba30ece923c12fe7">Cap_type</a></td> <td class="paramname"><span class="paramname"><em>cap</em></span></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span><span class="mlabel noexcept">noexcept</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Constructor to create an invalid capability selector. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">cap</td><td>Capability selector. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00282">282</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<a id="ad0691c8f768b711f43e8053dae124ab7" name="ad0691c8f768b711f43e8053dae124ab7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad0691c8f768b711f43e8053dae124ab7">&#9670;&#160;</a></span>Cap() <span class="overload">[3/4]</span></h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::Cap </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__l4__cap__api.html#gaa7801b63edba351bad9ea8026432b5c4">l4_default_caps_t</a></td> <td class="paramname"><span class="paramname"><em>cap</em></span></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span><span class="mlabel noexcept">noexcept</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize capability with one of the default capability selectors. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">cap</td><td>Capability selector. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00288">288</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<a id="a46adf956084b8d2f00252c17bfdc422c" name="a46adf956084b8d2f00252c17bfdc422c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a46adf956084b8d2f00252c17bfdc422c">&#9670;&#160;</a></span>Cap() <span class="overload">[4/4]</span></h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::Cap </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__l4__cap__api.html#ga1445e923ce73029130d569d6e69a4dd8">l4_cap_idx_t</a></td> <td class="paramname"><span class="paramname"><em>idx</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__cap__api.html#ggafee0421c2fe0e5cfc59f17f16ea10879aff9320ed307e76cebfca6c2871136102">L4_INVALID_CAP</a></span></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span><span class="mlabel explicit">explicit</span><span class="mlabel noexcept">noexcept</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize capability, defaults to the invalid capability selector. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">idx</td><td>Capability selector. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00294">294</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Member Function Documentation</h2>
<a id="aa7df6af25ea6423cd8b0f9410b4e0df8" name="aa7df6af25ea6423cd8b0f9410b4e0df8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa7df6af25ea6423cd8b0f9410b4e0df8">&#9670;&#160;</a></span>check_castable_from()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<div class="memtemplate">
template&lt;typename From&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::check_castable_from </td>
<td>(</td>
<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span><span class="mlabel static">static</span><span class="mlabel noexcept">noexcept</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Perform the type conversion that needs to compile in order for a capability of type From te be castable (via the correct cap_cast) to one of type T. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">From</td><td>Type to convert from </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00264">264</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<a id="af6d917bed9c7455862b14086dd3f4efa" name="af6d917bed9c7455862b14086dd3f4efa"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af6d917bed9c7455862b14086dd3f4efa">&#9670;&#160;</a></span>check_convertible_from()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<div class="memtemplate">
template&lt;typename From&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::check_convertible_from </td>
<td>(</td>
<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span><span class="mlabel static">static</span><span class="mlabel noexcept">noexcept</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Perform the type conversion that needs to compile in order for a capability of type From to be convertible to one of type T. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">From</td><td>Type to convert from </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00251">251</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<a id="a03750491e2cb888d26e2fbdfcc0b7dbc" name="a03750491e2cb888d26e2fbdfcc0b7dbc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a03750491e2cb888d26e2fbdfcc0b7dbc">&#9670;&#160;</a></span>copy()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classL4_1_1Cap.html">Cap</a> <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::copy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; T &gt; const &amp;</td> <td class="paramname"><span class="paramname"><em>src</em></span></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Copy a capability to this cap slot. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">src</td><td>the source capability slot. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00317">317</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<a id="ae097fe17d218b76dc368a5383372168f" name="ae097fe17d218b76dc368a5383372168f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae097fe17d218b76dc368a5383372168f">&#9670;&#160;</a></span>move()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classL4_1_1Cap.html">Cap</a> <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; T &gt;::move </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; T &gt; const &amp;</td> <td class="paramname"><span class="paramname"><em>src</em></span></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel inline">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Move a capability to this cap slot. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">src</td><td>the source capability slot.</td></tr>
</table>
</dd>
</dl>
<p>After this operation the source slot is no longer valid. </p>
<p class="definition">Definition at line <a class="el" href="capability_8h_source.html#l00307">307</a> of file <a class="el" href="capability_8h_source.html">capability.h</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>l4/sys/cxx/<a class="el" href="capability_8h_source.html">capability.h</a></li>
</ul>
</div><!-- contents -->
</div><!-- doc-content -->
<div id="page-nav" class="page-nav-panel">
<div id="page-nav-resize-handle"></div>
<div id="page-nav-tree">
<div id="page-nav-contents">
</div><!-- page-nav-contents -->
</div><!-- page-nav-tree -->
</div><!-- page-nav -->
</div><!-- container -->
<!-- HTML footer for doxygen 1.9.1-->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a href="namespaceL4.html">L4</a></li><li class="navelem"><a href="classL4_1_1Cap.html">Cap</a></li>
<li class="footer">Generated on <span class="timestamp"></span> for L4Re Operating System Framework by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.15.0 </li>
</ul>
</div>
</body>
</html>