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<div class="headertitle"><div class="title">Kumem utiltities <div class="ingroups"><a class="el" href="group__api__l4re.html">L4Re C++ Interface</a> » <a class="el" href="group__api__l4re__util.html">L4Re Util C++ Interface</a></div></div></div>
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<div id="dynsection-0" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Collaboration diagram for Kumem utiltities:</div>
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<div class="center"><iframe scrolling="no" loading="lazy" frameborder="0" src="group__l4re__util__kumem.svg" width="368" height="36"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga72ecf40d83b29caefa7ace4842ece68f" id="r_ga72ecf40d83b29caefa7ace4842ece68f"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga72ecf40d83b29caefa7ace4842ece68f">L4Re::Util::kumem_alloc</a> (<a class="el" href="group__l4__basic__types.html#ga4087b991c40c0d2fcde9ca331049a4d4">l4_addr_t</a> *mem, unsigned pages_order, <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>< <a class="el" href="classL4_1_1Task.html">L4::Task</a> > task=<a class="el" href="classL4Re_1_1Env.html#a2706ca11e70845b0a29a5646c9fd54bc">L4Re::Env::env</a>() ->task(), <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>< <a class="el" href="classL4Re_1_1Rm.html">L4Re::Rm</a> > rm=<a class="el" href="classL4Re_1_1Env.html#a2706ca11e70845b0a29a5646c9fd54bc">L4Re::Env::env</a>() ->rm()) noexcept</td></tr>
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<tr class="memdesc:ga72ecf40d83b29caefa7ace4842ece68f"><td class="mdescLeft"> </td><td class="mdescRight">Allocate state area. <br /></td></tr>
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<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
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<a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
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<a id="ga72ecf40d83b29caefa7ace4842ece68f" name="ga72ecf40d83b29caefa7ace4842ece68f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga72ecf40d83b29caefa7ace4842ece68f">◆ </a></span>kumem_alloc()</h2>
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<table class="memname">
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<td class="memname">int L4Re::Util::kumem_alloc </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="group__l4__basic__types.html#ga4087b991c40c0d2fcde9ca331049a4d4">l4_addr_t</a> *</td> <td class="paramname"><span class="paramname"><em>mem</em></span>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">unsigned</td> <td class="paramname"><span class="paramname"><em>pages_order</em></span>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>< <a class="el" href="classL4_1_1Task.html">L4::Task</a> ></td> <td class="paramname"><span class="paramname"><em>task</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="classL4Re_1_1Env.html#a2706ca11e70845b0a29a5646c9fd54bc">L4Re::Env::env</a>() ->task()</span>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>< <a class="el" href="classL4Re_1_1Rm.html">L4Re::Rm</a> ></td> <td class="paramname"><span class="paramname"><em>rm</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="classL4Re_1_1Env.html#a2706ca11e70845b0a29a5646c9fd54bc">L4Re::Env::env</a>() ->rm()</span> )</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel noexcept">noexcept</span></span> </td>
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</div><div class="memdoc">
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<p>Allocate state area. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[out]</td><td class="paramname">mem</td><td>Pointer to memory that has been allocated. </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">pages_order</td><td>Size to allocate, in log2 pages. </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">task</td><td>Task to use for allocation. </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">rm</td><td>Region manager to use for allocation.</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<tr><td class="paramname">0</td><td>for success </td></tr>
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<tr><td class="paramname"><0</td><td>error code on failure</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section note"><dt>Note</dt><dd>The amount of kernel-user memory that can be allocated at once is limited by the used kernel implementation. The minimum allocatable amount is one page. A portable implementation should not depend on allocations greater than 16KiB to succeed. </dd></dl>
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<p class="reference">References <a class="el" href="env_source.html#l00096">L4Re::Env::env()</a>.</p>
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<div id="dynsection-1" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Here is the call graph for this function:</div>
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<div class="center"><iframe scrolling="no" loading="lazy" frameborder="0" src="group__l4re__util__kumem_ga72ecf40d83b29caefa7ace4842ece68f_cgraph.svg" width="356" height="36"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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