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<p>C++ Factory interface, see <a class="el" href="group__l4__factory__api.html">Factory</a> for the C interface.
<a href="#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="factory_source.html">factory</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::Factory:</div>
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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>Collaboration diagram for L4::Factory:</div>
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<table class="memberdecls">
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Data Structures</h2></td></tr>
<tr class="memitem:Nil" id="r_Nil"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structL4_1_1Factory_1_1Nil.html">Nil</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Special type to add a void argument into the factory create stream. <a href="structL4_1_1Factory_1_1Nil.html#details">More...</a><br /></td></tr>
<tr class="memitem:Lstr" id="r_Lstr"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structL4_1_1Factory_1_1Lstr.html">Lstr</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Special type to add a pascal string into the factory create stream. <a href="structL4_1_1Factory_1_1Lstr.html#details">More...</a><br /></td></tr>
<tr class="memitem:S" id="r_S"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Factory_1_1S.html">S</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Stream class for the <a class="el" href="#ab52604d4abed4d6009ce51a59492edd7" title="Generic create call to the factory.">create()</a> argument stream. <a href="classL4_1_1Factory_1_1S.html#details">More...</a><br /></td></tr>
</table><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>
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<tr class="memdesc:ab52604d4abed4d6009ce51a59492edd7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Generic create call to the factory. <br /></td></tr>
<tr class="memitem:add39d432a64a16aec33abeefcb3ba1cd" id="r_add39d432a64a16aec33abeefcb3ba1cd"><td class="memTemplParams" colspan="2">template&lt;typename OBJ&gt; </td></tr>
<tr class="memitem:add39d432a64a16aec33abeefcb3ba1cd template"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classL4_1_1Factory_1_1S.html">S</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#add39d432a64a16aec33abeefcb3ba1cd">create</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; OBJ &gt; target, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:add39d432a64a16aec33abeefcb3ba1cd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create call for typed capabilities. <br /></td></tr>
<tr class="memitem:a491c8f5113bb68cd402db1eb59ac76ea" id="r_a491c8f5113bb68cd402db1eb59ac76ea"><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="#a491c8f5113bb68cd402db1eb59ac76ea">create_task</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; <a class="el" href="classL4_1_1Task.html">Task</a> &gt; const &amp;target_cap, <a class="el" href="unionl4__fpage__t.html">l4_fpage_t</a> *utcb_area, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:a491c8f5113bb68cd402db1eb59ac76ea"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a new task. <br /></td></tr>
<tr class="memitem:a014721aec27ad4877555d5f4b7204896" id="r_a014721aec27ad4877555d5f4b7204896"><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="#a014721aec27ad4877555d5f4b7204896">create_factory</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; <a class="el" href="classL4_1_1Factory.html">Factory</a> &gt; const &amp;target_cap, unsigned long limit, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:a014721aec27ad4877555d5f4b7204896"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a new factory. <br /></td></tr>
<tr class="memitem:a79b67bcf639db7fd92b399d44ab272a8" id="r_a79b67bcf639db7fd92b399d44ab272a8"><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="#a79b67bcf639db7fd92b399d44ab272a8">create_gate</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; void &gt; const &amp;target_cap, <a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; Snd_destination &gt; const &amp;snd_dst_cap, <a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> label, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:a79b67bcf639db7fd92b399d44ab272a8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a new IPC gate, optionally bound to a send destination (a thread or thread group). <br /></td></tr>
<tr class="memitem:a6b0504bc01000ccbeaf137b20e7284c5" id="r_a6b0504bc01000ccbeaf137b20e7284c5"><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="#a6b0504bc01000ccbeaf137b20e7284c5">create_thread_group</a> (<a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; <a class="el" href="classL4_1_1Thread__group.html">Thread_group</a> &gt; const &amp;target_cap, unsigned policy, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:a6b0504bc01000ccbeaf137b20e7284c5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a new thread group. <br /></td></tr>
<tr class="inherit_header pub_methods_classL4_1_1Kobject"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pub_methods_classL4_1_1Kobject')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Public Member Functions inherited from <a class="el" href="classL4_1_1Kobject.html">L4::Kobject</a></td></tr>
<tr class="memitem:a9fe009599de49f1af438ff49998faec0 inherit pub_methods_classL4_1_1Kobject" id="r_a9fe009599de49f1af438ff49998faec0"><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_1Kobject.html#a9fe009599de49f1af438ff49998faec0">dec_refcnt</a> (<a class="el" href="group__l4__basic__types.html#ga51d9492e7700d70ed35838154ca9b279">l4_mword_t</a> diff, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>())</td></tr>
<tr class="memdesc:a9fe009599de49f1af438ff49998faec0 inherit pub_methods_classL4_1_1Kobject"><td class="mdescLeft">&#160;</td><td class="mdescRight">Decrement the in kernel reference counter for the object. <br /></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 pro_types_classL4_1_1Kobject__t"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_types_classL4_1_1Kobject__t')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Types inherited from <a class="el" href="classL4_1_1Kobject__t.html">L4::Kobject_t&lt; Factory, Kobject, L4_PROTO_FACTORY &gt;</a></td></tr>
<tr class="memitem:af7df35ba5bf68ef5993e605a6b62328a inherit pro_types_classL4_1_1Kobject__t" id="r_af7df35ba5bf68ef5993e605a6b62328a"><td class="memItemLeft" align="right" valign="top">
typedef <a class="el" href="classL4_1_1Factory.html">Factory</a>&#160;</td><td class="memItemRight" valign="bottom"><b>Class</b></td></tr>
<tr class="memdesc:af7df35ba5bf68ef5993e605a6b62328a inherit pro_types_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">The target interface type (inheriting from <a class="el" href="classL4_1_1Kobject__t.html" title="Helper class to create an L4Re interface class that is derived from a single base class.">Kobject_t</a>). <br /></td></tr>
<tr class="memitem:a0d83157994565e9c01f10006bdda2efa inherit pro_types_classL4_1_1Kobject__t" id="r_a0d83157994565e9c01f10006bdda2efa"><td class="memItemLeft" align="right" valign="top">
typedef Typeid::Iface&lt; PROTO, <a class="el" href="classL4_1_1Factory.html">Factory</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>__Iface</b></td></tr>
<tr class="memdesc:a0d83157994565e9c01f10006bdda2efa inherit pro_types_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">The interface description for the derived class. <br /></td></tr>
<tr class="memitem:afc2feec2f4a15e85286aabfa15c53e06 inherit pro_types_classL4_1_1Kobject__t" id="r_afc2feec2f4a15e85286aabfa15c53e06"><td class="memItemLeft" align="right" valign="top">
typedef Typeid::Merge_list&lt; Typeid::Iface_list&lt; <a class="el" href="classL4_1_1Kobject__t.html#a0d83157994565e9c01f10006bdda2efa">__Iface</a> &gt;, typename Kobject::__Iface_list &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>__Iface_list</b></td></tr>
<tr class="memdesc:afc2feec2f4a15e85286aabfa15c53e06 inherit pro_types_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">The list of all RPC interfaces provided directly or through inheritance. <br /></td></tr>
<tr class="inherit_header pro_methods_classL4_1_1Kobject__t"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_methods_classL4_1_1Kobject__t')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Member Functions inherited from <a class="el" href="classL4_1_1Kobject__t.html">L4::Kobject_t&lt; Factory, Kobject, L4_PROTO_FACTORY &gt;</a></td></tr>
<tr class="memitem:a3d80fec7e057d575ec4b393437f05f8a inherit pro_methods_classL4_1_1Kobject__t" id="r_a3d80fec7e057d575ec4b393437f05f8a"><td class="memItemLeft" align="right" valign="top">
<a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; <a class="el" href="classL4_1_1Kobject__t.html#af7df35ba5bf68ef5993e605a6b62328a">Class</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>c</b> () const noexcept</td></tr>
<tr class="memdesc:a3d80fec7e057d575ec4b393437f05f8a inherit pro_methods_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the capability to ourselves. <br /></td></tr>
<tr class="inherit_header pro_methods_classL4_1_1Kobject"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_methods_classL4_1_1Kobject')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Member Functions inherited from <a class="el" href="classL4_1_1Kobject.html">L4::Kobject</a></td></tr>
<tr class="memitem:a4f2117ae76762f4084e6a1adb915863c inherit pro_methods_classL4_1_1Kobject" id="r_a4f2117ae76762f4084e6a1adb915863c"><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_1Kobject.html#a4f2117ae76762f4084e6a1adb915863c">cap</a> () const noexcept</td></tr>
<tr class="memdesc:a4f2117ae76762f4084e6a1adb915863c inherit pro_methods_classL4_1_1Kobject"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return capability selector. <br /></td></tr>
<tr class="inherit_header pro_static_methods_classL4_1_1Kobject__t"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_static_methods_classL4_1_1Kobject__t')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Static Protected Member Functions inherited from <a class="el" href="classL4_1_1Kobject__t.html">L4::Kobject_t&lt; Factory, Kobject, L4_PROTO_FACTORY &gt;</a></td></tr>
<tr class="memitem:a7433b8eed587278821dd496864f75363 inherit pro_static_methods_classL4_1_1Kobject__t" id="r_a7433b8eed587278821dd496864f75363"><td class="memItemLeft" align="right" valign="top">
static void&#160;</td><td class="memItemRight" valign="bottom"><b>__check_protocols__</b> () noexcept</td></tr>
<tr class="memdesc:a7433b8eed587278821dd496864f75363 inherit pro_static_methods_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">Helper to check for protocol conflicts. <br /></td></tr>
</table>
<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
<div class="textblock"><p>C++ Factory interface, see <a class="el" href="group__l4__factory__api.html">Factory</a> for the C interface. </p>
<p>Factories provide an interface to create objects which are accessed via capabilities.</p>
<p>For additional information about which objects can be created via this interface, see server-specific information in <a class="el" href="l4re_concepts_kernel_factory.html">Kernel Factory</a> and <a class="el" href="l4re_servers.html">L4Re Servers</a>.</p>
<dl class="section user"><dt>Include File</dt><dd><div class="fragment"><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="factory.html">l4/sys/factory</a>&gt;</span> </div>
<div class="ttc" id="afactory_html"><div class="ttname"><a href="factory.html">factory</a></div><div class="ttdoc">Common factory related definitions.</div></div>
</div><!-- fragment --></dd></dl>
<p>For the C interface refer to <a class="el" href="group__l4__factory__api.html">Factory</a>. </p>
<p class="definition">Definition at line <a class="el" href="factory_source.html#l00038">38</a> of file <a class="el" href="factory_source.html">factory</a>.</p>
</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="add39d432a64a16aec33abeefcb3ba1cd" name="add39d432a64a16aec33abeefcb3ba1cd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#add39d432a64a16aec33abeefcb3ba1cd">&#9670;&#160;</a></span>create() <span class="overload">[1/2]</span></h2>
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<td class="memname"><a class="el" href="classL4_1_1Factory_1_1S.html">S</a> L4::Factory::create </td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; OBJ &gt;</td> <td class="paramname"><span class="paramname"><em>target</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Create call for typed capabilities. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
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<tr><td class="paramname">OBJ</td><td>Capability type of the object to be created. </td></tr>
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<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">target</td><td>Capability of type OBJ. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. Defaults to <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>A create stream that allows additional arguments to be passed to the <span class="tt">create()</span> call via the left-shift (&lt;&lt;) operator (see #S::operator &lt;&lt;).</dd></dl>
<p>This method does not directly invoke the factory. The factory is invoked when the create stream returned by this method is converted to an <a class="el" href="structl4__msgtag__t.html" title="Message tag data structure.">l4_msgtag_t</a> (see <a class="el" href="classL4_1_1Factory_1_1S.html#af01d7ba40ace8862c0b670e1fb705810" title="Explicitly commits the operation and returns the result.">S::operator l4_msgtag_t()</a>), or otherwise when the stream goes out of scope (not rcommended; see #S::~S()).</p>
<dl class="section pre"><dt>Precondition</dt><dd>The invoked <a class="el" href="classL4_1_1Factory.html" title="C++ Factory interface, see Factory for the C interface.">Factory</a> capability must have the permission <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a>, otherwise the later factory IPC will fail with <a class="el" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9ae679aa95cfccf769e6d8e7ddb746fdc8" title="No permission.">L4_EPERM</a> (see <a class="el" href="classL4_1_1Factory_1_1S.html#af01d7ba40ace8862c0b670e1fb705810" title="Explicitly commits the operation and returns the result.">S::operator l4_msgtag_t()</a>).</dd></dl>
<dl class="section note"><dt>Note</dt><dd>The create stream uses the UTCB to store parameters for the service call. During the lifetime of a create stream or, until it is converted to an <a class="el" href="structl4__msgtag__t.html" title="Message tag data structure.">l4_msgtag_t</a>, other UTCB-using operations must not be used.</dd></dl>
<p>Usage: </p><div class="fragment"><div class="line"><a class="code hl_class" href="classL4_1_1Cap.html">L4::Cap&lt;L4Re::Dataspace&gt;</a> ds = <a class="code hl_variable" href="group__l4re__cap__api.html#ga29e3dbeb3c8ed0609519c9df212c9c52">L4Re::Util::cap_alloc</a>.alloc&lt;<a class="code hl_class" href="classL4Re_1_1Dataspace.html">L4Re::Dataspace</a>&gt;();</div>
<div class="line">factory-&gt;create(ds) &lt;&lt; <a class="code hl_typedef" href="group__l4__basic__types.html#ga51d9492e7700d70ed35838154ca9b279">l4_mword_t</a>(size_in_bytes);</div>
<div class="ttc" id="aclassL4Re_1_1Dataspace_html"><div class="ttname"><a href="classL4Re_1_1Dataspace.html">L4Re::Dataspace</a></div><div class="ttdoc">Interface for memory-like objects.</div><div class="ttdef"><b>Definition</b> <a href="dataspace_source.html#l00050">dataspace:53</a></div></div>
<div class="ttc" id="aclassL4_1_1Cap_html"><div class="ttname"><a href="classL4_1_1Cap.html">L4::Cap</a></div><div class="ttdoc">C++ interface for capabilities.</div><div class="ttdef"><b>Definition</b> <a href="capability_8h_source.html#l00223">capability.h:224</a></div></div>
<div class="ttc" id="agroup__l4__basic__types_html_ga51d9492e7700d70ed35838154ca9b279"><div class="ttname"><a href="group__l4__basic__types.html#ga51d9492e7700d70ed35838154ca9b279">l4_mword_t</a></div><div class="ttdeci">signed long l4_mword_t</div><div class="ttdoc">Signed machine word.</div><div class="ttdef"><b>Definition</b> <a href="l4_2sys_2l4int_8h_source.html#l00037">l4int.h:37</a></div></div>
<div class="ttc" id="agroup__l4re__cap__api_html_ga29e3dbeb3c8ed0609519c9df212c9c52"><div class="ttname"><a href="group__l4re__cap__api.html#ga29e3dbeb3c8ed0609519c9df212c9c52">L4Re::Util::cap_alloc</a></div><div class="ttdeci">_Cap_alloc &amp; cap_alloc</div><div class="ttdoc">Capability allocator.</div></div>
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<p class="definition">Definition at line <a class="el" href="factory_source.html#l00329">329</a> of file <a class="el" href="factory_source.html">factory</a>.</p>
<p class="reference">References <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab52604d4abed4d6009ce51a59492edd7">&#9670;&#160;</a></span>create() <span class="overload">[2/2]</span></h2>
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<td class="memname"><a class="el" href="classL4_1_1Factory_1_1S.html">S</a> L4::Factory::create </td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; void &gt;</td> <td class="paramname"><span class="paramname"><em>target</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Generic create call to the factory. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">target</td><td>Capability selector for the new object. The caller must allocate the capability slot. The kernel stores the new objects's capability into this slot. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">obj</td><td>The protocol ID that specifies which kind of object shall be created. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. Defaults to <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>A create stream that allows additional arguments to be passed to the <span class="tt">create()</span> call via the left-shift (&lt;&lt;) operator (see #S::operator &lt;&lt;).</dd></dl>
<p>This method does not directly invoke the factory. The factory is invoked when the create stream returned by this method is converted to an <a class="el" href="structl4__msgtag__t.html" title="Message tag data structure.">l4_msgtag_t</a> (see <a class="el" href="classL4_1_1Factory_1_1S.html#af01d7ba40ace8862c0b670e1fb705810" title="Explicitly commits the operation and returns the result.">S::operator l4_msgtag_t()</a>), or otherwise when the stream goes out of scope (not recommended; see #S::~S()).</p>
<dl class="section pre"><dt>Precondition</dt><dd>The invoked <a class="el" href="classL4_1_1Factory.html" title="C++ Factory interface, see Factory for the C interface.">Factory</a> capability must have the permission <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a>, otherwise the later factory IPC will fail with <a class="el" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9ae679aa95cfccf769e6d8e7ddb746fdc8" title="No permission.">L4_EPERM</a> (see <a class="el" href="classL4_1_1Factory_1_1S.html#af01d7ba40ace8862c0b670e1fb705810" title="Explicitly commits the operation and returns the result.">S::operator l4_msgtag_t()</a>).</dd></dl>
<dl class="section note"><dt>Note</dt><dd>The create stream uses the UTCB to store parameters for the service call. During the lifetime of a create stream or, until it is converted to an <a class="el" href="structl4__msgtag__t.html" title="Message tag data structure.">l4_msgtag_t</a>, other UTCB-using operations must not be used.</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="#add39d432a64a16aec33abeefcb3ba1cd" title="Create call for typed capabilities.">create(Cap&lt;OBJ&gt;, l4_utcb_t *)</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="factory_source.html#l00292">292</a> of file <a class="el" href="factory_source.html">factory</a>.</p>
<p class="reference">References <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a014721aec27ad4877555d5f4b7204896">&#9670;&#160;</a></span>create_factory()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Factory::create_factory </td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; <a class="el" href="classL4_1_1Factory.html">Factory</a> &gt; const &amp;</td> <td class="paramname"><span class="paramname"><em>target_cap</em></span>, </td>
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<p>Create a new factory. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">target_cap</td><td>The kernel stores the new factory's capability into this slot. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">limit</td><td>Limit for the new factory in bytes. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. Defaults to <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag</dd></dl>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">L4_EOK</td><td>No error occurred. </td></tr>
<tr><td class="paramname">-L4_EPERM</td><td>Insufficient permissions; see precondition. </td></tr>
<tr><td class="paramname">&lt;0</td><td>Error code.</td></tr>
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<dl class="section pre"><dt>Precondition</dt><dd>The invoked <a class="el" href="classL4_1_1Factory.html" title="C++ Factory interface, see Factory for the C interface.">Factory</a> capability must have the permission <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a>.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>In addition to memory needed for internal data structures, the <span class="tt">limit</span> (quota) of the new factory is counted towards the quota of the creating factory. The <span class="tt">limit</span> must be within <span class="tt">1 ≤ limit ≤ 2^(8 * sizeof(l4_umword_t) − 1) − 2</span> otherwise the behavior is undefined.</dd>
<dd>
This method is only guaranteed to work with the <a class="el" href="l4re_concepts_kernel_factory.html">Kernel Factory</a>. For other services, use the generic <a class="el" href="#ab52604d4abed4d6009ce51a59492edd7" title="Generic create call to the factory.">create()</a> method and consult the service documentation for information on the arguments that need to be passed to the create stream. </dd></dl>
<p class="definition">Definition at line <a class="el" href="factory_source.html#l00404">404</a> of file <a class="el" href="factory_source.html">factory</a>.</p>
<p class="reference">References <a class="el" href="capability_8h_source.html#l00049">L4::Cap_base::cap()</a>, and <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a79b67bcf639db7fd92b399d44ab272a8">&#9670;&#160;</a></span>create_gate()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Factory::create_gate </td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; void &gt; const &amp;</td> <td class="paramname"><span class="paramname"><em>target_cap</em></span>, </td>
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<p>Create a new IPC gate, optionally bound to a send destination (a thread or thread group). </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[out]</td><td class="paramname">target_cap</td><td>The kernel stores the new IPC gate's capability into this slot. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">snd_dst_cap</td><td>Optional capability selector of a thread or thread group to bind the gate to. Use <a class="el" href="group__l4__cap__api.html#ggafee0421c2fe0e5cfc59f17f16ea10879aff9320ed307e76cebfca6c2871136102" title="Invalid capability selector.">L4_INVALID_CAP</a> to create an unbound IPC gate. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">label</td><td>Optional label of the gate (precisely used if <span class="tt">snd_dst_cap</span> is valid). If <span class="tt">snd_dst_cap</span> is valid, <span class="tt">label</span> must be present. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. Defaults to <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag containing one of the following return codes.</dd></dl>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">L4_EOK</td><td>No error occurred. </td></tr>
<tr><td class="paramname">-L4_ENOMEM</td><td>Out-of-memory during allocation of the <a class="el" href="classL4_1_1Ipc__gate.html" title="The C++ IPC gate interface, see IPC-Gate API for the C interface.">Ipc_gate</a> object. </td></tr>
<tr><td class="paramname">-L4_EINVAL</td><td><span class="tt">snd_dst_cap</span> is void or points to something that is not a thread or thread group. </td></tr>
<tr><td class="paramname">-L4_EPERM</td><td>Insufficient permissions; see precondition.</td></tr>
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</dd>
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<dl class="section pre"><dt>Precondition</dt><dd>The invoked <a class="el" href="classL4_1_1Factory.html" title="C++ Factory interface, see Factory for the C interface.">Factory</a> capability must have the permission <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a>. Also <span class="tt">snd_dst_cap</span> (if <a class="el" href="classL4_1_1Cap__base.html#ab4937bb12579c752564f7250760d0bda">valid</a>) must have the permission <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a>.</dd></dl>
<p>An unbound IPC gate can be bound to a thread or thread group using <a class="el" href="classL4_1_1Rcv__endpoint.html#a44d288dd670226f6845b5bd8c973b15e" title="Bind the IPC receive endpoint to a thread.">L4::Ipc_gate::bind_thread()</a> or bind_snd_destination().</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classL4_1_1Ipc__gate.html" title="The C++ IPC gate interface, see IPC-Gate API for the C interface.">L4::Ipc_gate</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="factory_source.html#l00440">440</a> of file <a class="el" href="factory_source.html">factory</a>.</p>
<p class="reference">References <a class="el" href="capability_8h_source.html#l00049">L4::Cap_base::cap()</a>, and <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a491c8f5113bb68cd402db1eb59ac76ea">&#9670;&#160;</a></span>create_task()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Factory::create_task </td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; <a class="el" href="classL4_1_1Task.html">Task</a> &gt; const &amp;</td> <td class="paramname"><span class="paramname"><em>target_cap</em></span>, </td>
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<td class="paramtype"><a class="el" href="unionl4__fpage__t.html">l4_fpage_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb_area</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Create a new task. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">target_cap</td><td>The kernel stores the new task's capability into this slot. </td></tr>
<tr><td class="paramdir">[in,out]</td><td class="paramname">utcb_area</td><td>Flexpage that describes an area in the address space of the new task, where the kernel should map the kernel-allocated kernel-user memory to. The kernel uses the kernel-user memory to store UTCBs and vCPU state-save-areas of the new task.</td></tr>
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<p>On systems without MMU, the flexpage is adjusted to reflect the acually allocated physical address. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. Defaults to <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag</dd></dl>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">L4_EOK</td><td>No error occurred. </td></tr>
<tr><td class="paramname">-L4_EPERM</td><td>Insufficient permissions; see precondition. </td></tr>
<tr><td class="paramname">&lt;0</td><td>Error code.</td></tr>
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</dd>
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<dl class="section pre"><dt>Precondition</dt><dd>The invoked <a class="el" href="classL4_1_1Factory.html" title="C++ Factory interface, see Factory for the C interface.">Factory</a> capability must have the permission <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a>.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>The size of the UTCB area specifies indirectly the number of UTCBs available for this task. Refer to <a class="el" href="classL4_1_1Task.html#a9e741ff1d27ca776c65abaff1de2f139" title="Add kernel-user memory.">L4::Task::add_ku_mem</a> for adding more of this type of memory.</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classL4_1_1Task.html" title="C++ interface of the Task kernel object, see Task for the C interface.">L4::Task</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="factory_source.html#l00370">370</a> of file <a class="el" href="factory_source.html">factory</a>.</p>
<p class="reference">References <a class="el" href="capability_8h_source.html#l00049">L4::Cap_base::cap()</a>, and <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6b0504bc01000ccbeaf137b20e7284c5">&#9670;&#160;</a></span>create_thread_group()</h2>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">Cap</a>&lt; <a class="el" href="classL4_1_1Thread__group.html">Thread_group</a> &gt; const &amp;</td> <td class="paramname"><span class="paramname"><em>target_cap</em></span>, </td>
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<td class="paramtype">unsigned</td> <td class="paramname"><span class="paramname"><em>policy</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Create a new thread group. </p>
<p>An IPC endpoint can be bound to a thread group. When a message arrives at the IPC endpoint, a specific thread of the thread group is selected to actually receive the message. A thread group is a send destination for an IPC endpoint.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">target_cap</td><td>The kernel stores the new thread group's capability into this slot. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">policy</td><td>Policy parameter for the thread group. See L4_thread_group_policy for a list of supported values.</td></tr>
<tr><td class="paramdir"></td><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. Defaults to <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag containing one of the following return codes.</dd></dl>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">L4_EOK</td><td>No error occurred. </td></tr>
<tr><td class="paramname">-L4_ENOMEM</td><td>Out-of-memory during allocation of the <a class="el" href="classL4_1_1Thread__group.html" title="C++ L4 kernel thread group interface, see Thread groups for the C interface.">Thread_group</a> object. </td></tr>
<tr><td class="paramname">-L4_EINVAL</td><td>Invalid policy parameter. </td></tr>
<tr><td class="paramname">-L4_EPERM</td><td>The factory instance requires <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a> rights on the invoked capability and <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39acb2b2e95f6be245f64937ac48a068066" title="Interface specific &#39;S&#39; right for capability flexpages.">L4_CAP_FPAGE_S</a> is not present. </td></tr>
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<p class="definition">Definition at line <a class="el" href="factory_source.html#l00475">475</a> of file <a class="el" href="factory_source.html">factory</a>.</p>
<p class="reference">References <a class="el" href="capability_8h_source.html#l00049">L4::Cap_base::cap()</a>, and <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>.</p>
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