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 <span id="projectnumber">3.6.0</span>
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<li class="navelem"><a class="el" href="namespaceentt.html">entt</a></li><li class="navelem"><a class="el" href="classentt_1_1process.html">process</a></li> </ul>
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<a href="#pub-types">Public Types</a> |
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<a href="#pro-methods">Protected Member Functions</a> |
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<a href="classentt_1_1process-members.html">List of all members</a> </div>
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<div class="headertitle">
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<div class="title">entt::process< Derived, Delta > Class Template Reference</div> </div>
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<div class="contents">
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<p>Base class for processes.
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<a href="classentt_1_1process.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="process_8hpp_source.html">process.hpp</a>></code></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
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Public Types</h2></td></tr>
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<tr class="memitem:a625b574ea6d83e3a4933acc3d0279295"><td class="memItemLeft" align="right" valign="top"><a id="a625b574ea6d83e3a4933acc3d0279295"></a>
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using </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#a625b574ea6d83e3a4933acc3d0279295">delta_type</a> = Delta</td></tr>
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<tr class="memdesc:a625b574ea6d83e3a4933acc3d0279295"><td class="mdescLeft"> </td><td class="mdescRight">Type used to provide elapsed time. <br /></td></tr>
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<tr class="separator:a625b574ea6d83e3a4933acc3d0279295"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a2baf1b6aef37c1420a77cd3f8eadcf79"><td class="memItemLeft" align="right" valign="top"><a id="a2baf1b6aef37c1420a77cd3f8eadcf79"></a>
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virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#a2baf1b6aef37c1420a77cd3f8eadcf79">~process</a> ()</td></tr>
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<tr class="memdesc:a2baf1b6aef37c1420a77cd3f8eadcf79"><td class="mdescLeft"> </td><td class="mdescRight">Default destructor. <br /></td></tr>
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<tr class="separator:a2baf1b6aef37c1420a77cd3f8eadcf79"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af27d28af408f1dfb260b8fe976e66ea3"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#af27d28af408f1dfb260b8fe976e66ea3">abort</a> (const bool immediately=false)</td></tr>
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<tr class="memdesc:af27d28af408f1dfb260b8fe976e66ea3"><td class="mdescLeft"> </td><td class="mdescRight">Aborts a process if it's still alive. <a href="classentt_1_1process.html#af27d28af408f1dfb260b8fe976e66ea3">More...</a><br /></td></tr>
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<tr class="separator:af27d28af408f1dfb260b8fe976e66ea3"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aacb0108ddb7ee68eac145c092b4e4163"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#aacb0108ddb7ee68eac145c092b4e4163">alive</a> () const noexcept</td></tr>
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<tr class="memdesc:aacb0108ddb7ee68eac145c092b4e4163"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if a process is either running or paused. <a href="classentt_1_1process.html#aacb0108ddb7ee68eac145c092b4e4163">More...</a><br /></td></tr>
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<tr class="separator:aacb0108ddb7ee68eac145c092b4e4163"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac889b66e80ecaac22816927a120a416a"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#ac889b66e80ecaac22816927a120a416a">dead</a> () const noexcept</td></tr>
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<tr class="memdesc:ac889b66e80ecaac22816927a120a416a"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if a process is already terminated. <a href="classentt_1_1process.html#ac889b66e80ecaac22816927a120a416a">More...</a><br /></td></tr>
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<tr class="separator:ac889b66e80ecaac22816927a120a416a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac7738f4e908293a072a89981a004669a"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#ac7738f4e908293a072a89981a004669a">paused</a> () const noexcept</td></tr>
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<tr class="memdesc:ac7738f4e908293a072a89981a004669a"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if a process is currently paused. <a href="classentt_1_1process.html#ac7738f4e908293a072a89981a004669a">More...</a><br /></td></tr>
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<tr class="separator:ac7738f4e908293a072a89981a004669a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6c716b08baea91192512aeb14f26328b"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#a6c716b08baea91192512aeb14f26328b">rejected</a> () const noexcept</td></tr>
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<tr class="memdesc:a6c716b08baea91192512aeb14f26328b"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if a process terminated with errors. <a href="classentt_1_1process.html#a6c716b08baea91192512aeb14f26328b">More...</a><br /></td></tr>
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<tr class="separator:a6c716b08baea91192512aeb14f26328b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aacc7fe0ef3265113079c70ff8cd9478d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#aacc7fe0ef3265113079c70ff8cd9478d">tick</a> (const Delta delta, void *data=nullptr)</td></tr>
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<tr class="memdesc:aacc7fe0ef3265113079c70ff8cd9478d"><td class="mdescLeft"> </td><td class="mdescRight">Updates a process and its internal state if required. <a href="classentt_1_1process.html#aacc7fe0ef3265113079c70ff8cd9478d">More...</a><br /></td></tr>
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<tr class="separator:aacc7fe0ef3265113079c70ff8cd9478d"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
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Protected Member Functions</h2></td></tr>
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<tr class="memitem:a4380dab12dc4c7559ada2182468aa1db"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#a4380dab12dc4c7559ada2182468aa1db">succeed</a> () noexcept</td></tr>
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<tr class="memdesc:a4380dab12dc4c7559ada2182468aa1db"><td class="mdescLeft"> </td><td class="mdescRight">Terminates a process with success if it's still alive. <a href="classentt_1_1process.html#a4380dab12dc4c7559ada2182468aa1db">More...</a><br /></td></tr>
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<tr class="separator:a4380dab12dc4c7559ada2182468aa1db"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aac7438533f769e1d24836ca04f86ec7c"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#aac7438533f769e1d24836ca04f86ec7c">fail</a> () noexcept</td></tr>
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<tr class="memdesc:aac7438533f769e1d24836ca04f86ec7c"><td class="mdescLeft"> </td><td class="mdescRight">Terminates a process with errors if it's still alive. <a href="classentt_1_1process.html#aac7438533f769e1d24836ca04f86ec7c">More...</a><br /></td></tr>
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<tr class="separator:aac7438533f769e1d24836ca04f86ec7c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a2bcdfd9f2ec24b591ba1fbf38f563023"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#a2bcdfd9f2ec24b591ba1fbf38f563023">pause</a> () noexcept</td></tr>
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<tr class="memdesc:a2bcdfd9f2ec24b591ba1fbf38f563023"><td class="mdescLeft"> </td><td class="mdescRight">Stops a process if it's in a running state. <a href="classentt_1_1process.html#a2bcdfd9f2ec24b591ba1fbf38f563023">More...</a><br /></td></tr>
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<tr class="separator:a2bcdfd9f2ec24b591ba1fbf38f563023"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5b024d8b110a8ab631132acc6abfb9e1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1process.html#a5b024d8b110a8ab631132acc6abfb9e1">unpause</a> () noexcept</td></tr>
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<tr class="memdesc:a5b024d8b110a8ab631132acc6abfb9e1"><td class="mdescLeft"> </td><td class="mdescRight">Restarts a process if it's paused. <a href="classentt_1_1process.html#a5b024d8b110a8ab631132acc6abfb9e1">More...</a><br /></td></tr>
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<tr class="separator:a5b024d8b110a8ab631132acc6abfb9e1"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><h3>template<typename Derived, typename Delta><br />
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class entt::process< Derived, Delta ></h3>
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<p>Base class for processes. </p>
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<p>This class stays true to the CRTP idiom. Derived classes must specify what's the intended type for elapsed times.<br />
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A process should expose publicly the following member functions whether required:</p>
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<ul>
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<li><div class="fragment"><div class="line"><span class="keywordtype">void</span> update(Delta, <span class="keywordtype">void</span> *);</div>
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</div><!-- fragment --><p class="startli">It's invoked once per tick until a process is explicitly aborted or it terminates either with or without errors. Even though it's not mandatory to declare this member function, as a rule of thumb each process should at least define it to work properly. The <code>void *</code> parameter is an opaque pointer to user data (if any) forwarded directly to the process during an update.</p>
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</li>
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<li><div class="fragment"><div class="line"><span class="keywordtype">void</span> init();</div>
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</div><!-- fragment --><p class="startli">It's invoked when the process joins the running queue of a scheduler. This happens as soon as it's attached to the scheduler if the process is a top level one, otherwise when it replaces its parent if the process is a continuation.</p>
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</li>
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<li><div class="fragment"><div class="line"><span class="keywordtype">void</span> succeeded();</div>
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</div><!-- fragment --><p class="startli">It's invoked in case of success, immediately after an update and during the same tick.</p>
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</li>
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<li><div class="fragment"><div class="line"><span class="keywordtype">void</span> failed();</div>
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</div><!-- fragment --><p class="startli">It's invoked in case of errors, immediately after an update and during the same tick.</p>
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</li>
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<li><div class="fragment"><div class="line"><span class="keywordtype">void</span> aborted();</div>
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</div><!-- fragment --><p class="startli">It's invoked only if a process is explicitly aborted. There is no guarantee that it executes in the same tick, this depends solely on whether the process is aborted immediately or not.</p>
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</li>
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</ul>
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<p>Derived classes can change the internal state of a process by invoking the <code>succeed</code> and <code>fail</code> protected member functions and even pause or unpause the process itself.</p>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="classentt_1_1scheduler.html" title="Cooperative scheduler for processes.">scheduler</a></dd></dl>
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<dl class="tparams"><dt>Template Parameters</dt><dd>
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<table class="tparams">
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<tr><td class="paramname">Derived</td><td>Actual type of process that extends the class template. </td></tr>
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<tr><td class="paramname">Delta</td><td>Type to use to provide elapsed time. </td></tr>
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</table>
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</dd>
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</dl>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00073">73</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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</div><h2 class="groupheader">Member Function Documentation</h2>
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<a id="af27d28af408f1dfb260b8fe976e66ea3"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#af27d28af408f1dfb260b8fe976e66ea3">◆ </a></span>abort()</h2>
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template<typename Derived , typename Delta > </div>
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<td class="memname">void <a class="el" href="classentt_1_1process.html">entt::process</a>< Derived, Delta >::abort </td>
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<td>(</td>
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<td class="paramtype">const bool </td>
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<td class="paramname"><em>immediately</em> = <code>false</code></td><td>)</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>Aborts a process if it's still alive. </p>
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<p>The function is idempotent and it does nothing if the process isn't alive.</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="paramname">immediately</td><td>Requests an immediate operation. </td></tr>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00182">182</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<a id="aacb0108ddb7ee68eac145c092b4e4163"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aacb0108ddb7ee68eac145c092b4e4163">◆ </a></span>alive()</h2>
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template<typename Derived , typename Delta > </div>
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<td class="memname">bool <a class="el" href="classentt_1_1process.html">entt::process</a>< Derived, Delta >::alive </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">noexcept</span></span> </td>
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<p>Returns true if a process is either running or paused. </p>
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<dl class="section return"><dt>Returns</dt><dd>True if the process is still alive, false otherwise. </dd></dl>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00196">196</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<a id="ac889b66e80ecaac22816927a120a416a"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ac889b66e80ecaac22816927a120a416a">◆ </a></span>dead()</h2>
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template<typename Derived , typename Delta > </div>
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<td class="memname">bool <a class="el" href="classentt_1_1process.html">entt::process</a>< Derived, Delta >::dead </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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<p>Returns true if a process is already terminated. </p>
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<dl class="section return"><dt>Returns</dt><dd>True if the process is terminated, false otherwise. </dd></dl>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00204">204</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aac7438533f769e1d24836ca04f86ec7c">◆ </a></span>fail()</h2>
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template<typename Derived , typename Delta > </div>
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<td class="memname">void <a class="el" href="classentt_1_1process.html">entt::process</a>< Derived, Delta >::fail </td>
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<p>Terminates a process with errors if it's still alive. </p>
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<p>The function is idempotent and it does nothing if the process isn't alive. </p>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00135">135</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2bcdfd9f2ec24b591ba1fbf38f563023">◆ </a></span>pause()</h2>
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template<typename Derived , typename Delta > </div>
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<td class="memname">void <a class="el" href="classentt_1_1process.html">entt::process</a>< Derived, Delta >::pause </td>
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<p>Stops a process if it's in a running state. </p>
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<p>The function is idempotent and it does nothing if the process isn't running. </p>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00147">147</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac7738f4e908293a072a89981a004669a">◆ </a></span>paused()</h2>
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<p>Returns true if a process is currently paused. </p>
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<dl class="section return"><dt>Returns</dt><dd>True if the process is paused, false otherwise. </dd></dl>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00212">212</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6c716b08baea91192512aeb14f26328b">◆ </a></span>rejected()</h2>
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<p>Returns true if a process terminated with errors. </p>
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<dl class="section return"><dt>Returns</dt><dd>True if the process terminated with errors, false otherwise. </dd></dl>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00220">220</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a4380dab12dc4c7559ada2182468aa1db">◆ </a></span>succeed()</h2>
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<p>Terminates a process with success if it's still alive. </p>
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<p>The function is idempotent and it does nothing if the process isn't alive. </p>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00123">123</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aacc7fe0ef3265113079c70ff8cd9478d">◆ </a></span>tick()</h2>
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<p>Updates a process and its internal state if required. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00229">229</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a5b024d8b110a8ab631132acc6abfb9e1">◆ </a></span>unpause()</h2>
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<p>Restarts a process if it's paused. </p>
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<p>The function is idempotent and it does nothing if the process isn't paused. </p>
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<p class="definition">Definition at line <a class="el" href="process_8hpp_source.html#l00159">159</a> of file <a class="el" href="process_8hpp_source.html">process.hpp</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li>src/entt/process/<a class="el" href="process_8hpp_source.html">process.hpp</a></li>
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